Rolling

We have always made chips.
Then we decided to add other things.

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[node:author] david
[node:author:account-name] david
[node:author:created] Thu, 06/27/2019 - 16:47
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[node:author:created:html_week] 2019-W26
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[node:body]

La tecnologia della filettatura rullata ( processo di deformazione a freddo dell'acciaio ) è stata introdotta dal fondatore Paolo Montesi all'alba degli anni '80, rappresentando all'epoca un processo "particolare e poco conosciuto" seppur sviluppato dall'industria tedesca già nei primi anni del novecento.

Le prime rullatrici tedesche rappresentarono un apripista nell'approfondimento dei vantaggi del processo legati alla produttività ed economicità della filettatura rullata.

La crescita aziendale è stata accompagnata anche dalla diffusione sul mercato nazionale ed europeo dei prodotti rullati Montesi, tanto da riconoscere il brand associandolo al prodotto.

Negli ultimi decenni l'esperienza sulla rullatura si è estesa anche ai processi di formatura per ottenere viti senza fine e splines, attribuendo a Montesi il riconoscimento di azienda di riferimento a livello italiano ed europeo nelle forniture di prodotti rullati di elevata qualità.

Ad oggi possiamo vantare collaborazioni con importanti multinazionali europee per forniture e prototipazioni di componenti meccanici sui quali la rullatura assume importanza strategica.

[node:field_categorie]
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[node:content-type:description] Use <em>basic pages</em> for your static content, such as an 'About us' page.
[node:content-type:edit-url] https://www.montesi.it/en/admin/structure/types/manage/page
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[node:changed:html_datetime] 2020-12-23T10:24:57+0100
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[node:changed:html_time] 10:24:57
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[node:changed:html_year] 2020
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[node:created] Fri, 06/28/2019 - 09:49
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We have always made chips.
Then we decided to add other things.

[node:field_highlight:value] <p>We have always made chips.<br /> Then we decided to add other things.</p>
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[node:field_sections]
THE ROLLING PROCESS AND ITS ADVANTAGES

Rolling is a mechanical process without chip removal that provides for the creation of threads, forming, and surface superfinishing by passing the piece between rolling tools in continuous rotation, which deform and refinish the outer surface of the raw material until the desired shape and sizes are reached.

Rolling is preferred to turning and grinding since plastic deformation on the piece involves the hardening of the material, increasing its hardness and preserving its mechanical properties. Also, since cracks cannot be detected, the rolled product has a better fatigue strength.

This is a process appreciated in fields such as aerospace (e.g., screws without cracks), automotive (splines on the engine shaft), and the railway, oil & gas, wind turbine, and off-road fields (earthmoving and farming machines), also thanks to the reduction in costs of the product.

The advantages of the rolling process can be summed up as follows:

  • In threading, an increase in resistance of the thread tooth is obtained, with subsequent greater resistance to wear.
  • In general, excellent roughness is obtained on the thread side and on the base radius, also improving the values that can be obtained by grinding.
  • No interruption in the progress of the fibre of the raw material, unlike removed or milled threading.
  • Reduced sensitivity to notching.
  • Increased productivity and resulting efficiency and cost-effectiveness of the process.
APPLICATIONS FOR THREADING

BAR THREADING TO OBTAIN MANOEUVRING SCREWS, MOVEMENT SCREWS, AND BALL RECIRCULATION SCREWS

The so-called “in passing” roll threading process typically starts from the processing of steel bars, which are completely threaded.

From this, screws in the length desired are obtained, which are processed at the ends for support and motion transmission.

Screws threaded by rolling, paired with sliding nuts, constitute a translation system used in a wide range of applications, both for manoeuvring heavy loads (rolled trapezoidal screws) and for moving lighter equipment with the need for greater speed (movement screws).

Roll threading also allows the creation of profiles for pairing with ball circulation nuts. Rolled screws for ball circulation nuts are one of the excellent potentials of roll threading, where precision is reached with advanced technology and processes with CNC numeric control.

ROLL THREADING OF SEMI-FINISHED PRODUCTS

The so called “dive” roll threading starts with the processing of previously turned components.

The excellence of the end result is also related to the quality of the preparatory turning phase, a synergy with which we have vast experience and expertise.

Roll threading on mechanical components (M, Tr, WhitWorth, UNC, UNF, UNEF threads) is a choice bound for special used (avionics) and ensures excellent resistance and finish.

Their synergy with our departments in the REMOVAL division allows a wide range of components with removed threading.

APPLICATIONS FOR FORMING

ROLLED WORMS

With rolling, plastic shaping of steel can be obtained to create precision worms, which are typically paired with crown gears in angular motion transmission or reduction applications.

These are processes where the movement of the material is very high and therefore, millesimal control of the large compression power involved is fundamental.

The most suitable generation of rolling machines is the numerically controlled one, which can manage the PSF (precision screw forming) process.

Rolling on tailstocks is the most advanced technical solution to create worms with an appreciable degree of precision, even in applications where worms obtained by notch forming are usually used.

ROLLED SPLINES (PARALLEL SPLINING)

Forced seating is a type of shaft-hub connection.

The shaft spline can be obtained by rolling using a rack or rollers.

Rack splining offers process stability and high productivity.

Splining with rollers offers size flexibility and extreme precision on the involutes.

APPLICATIONS FOR SURFACE SUPERFINISHING

Rolled superfinishing, also known as lapping, may be considered to be an excellent solution for obtaining surface finishes on cylindrical parts with low roughness.

The roughness values that can be obtained with this process are better than grinding and can be performed in a highly efficient and economical manner.

The synergy and continuous feedback between turning and the subsequent rolled superfinishing are indispensable for obtaining excellent results.

Shafts, rods, and drive screws in the valve sector are just a few of the typical applications of this process.

THE MONTESI ADVANTAGES IN PRODUCTS WITH ROLL THREADING

SCREWS

  • Availability of a vast warehouse of rolling tools for different types of thread geometry.
  • Wide range of diameters obtainable, left-right versions, single and multi start.
  • Screws in carbon steel, ETG, special high-resistance steels, stainless steel, and aluminium. • Standard product range available in the warehouse and on the industrial distribution market.

NUTS

  • Specialisation in high quality turning threading for obtain nuts that ensure excellent pairing on rolled screws of every thread type.
  •  Control and customization of the screw coupling runouts.
  • Highly productive and flexible turning department for the production of nuts with conventional or non-standard shapes.
  • Processing of metal and plastic materials.
  • Innovative solutions for dual material modular nuts.

MADE-TO-ORDER AND SPECIAL PRODUCTS

  • Rolled screws with end processing made-to-order according to the support and motion transmission requirements identified by the designer.
  • Nuts in special materials and with processing of the shapes according to the requirements identified by the designer.
  • Setup of special thread profiles in collaboration with our rolling tools supplier partners.
  • Possibility of laboratory tests to empirically measure the performance of the nut-screw system.
  • Collaboration with primary treatment companies to provide special protective surface coatings or those that improve the friction coefficient.

More details in the Products to design page

,

EQUIPMENT

Rolling machines:

  • 1 high-precision CNC rolling machine for rolling on tailstocks
  • 1 CNC rolling machine for bar threading
  • 4 rolling machines for bar threading
  • 1 rolling machine for special plunge threading

Rack forming rolling machine:

  • • 1 unit for rolled splines with automation
  • 1 manned unit for rolled splines

Rolling tools:

  • Extensive roller warehouse
,

ROLL THREADING TECHNOLOGY

Trapezoidal profile manoeuvring screw threading

Drive/multi-start screw threading

Recirculation screw threading

Automated straightening

Learn more

,

ROLL FORMING TECHNOLOGY

Worm forming

Spline forming

Learn more

,
Text

WHY CHOOSE MONTESI

  • Technological leader in Italy in rolling processes.
  • Standard products and products made to design to cover the needs of different market segments.
  • Rolling studies and tests on special products being prototyped to optimize their performance.
  • Experience in diverse industries, from construction to motor sports (Formula 1).
  • Partnerships with outstanding suppliers throughout the world in the production of rolling machinery and tools.
[node:field_sections:0]
THE ROLLING PROCESS AND ITS ADVANTAGES

Rolling is a mechanical process without chip removal that provides for the creation of threads, forming, and surface superfinishing by passing the piece between rolling tools in continuous rotation, which deform and refinish the outer surface of the raw material until the desired shape and sizes are reached.

Rolling is preferred to turning and grinding since plastic deformation on the piece involves the hardening of the material, increasing its hardness and preserving its mechanical properties. Also, since cracks cannot be detected, the rolled product has a better fatigue strength.

This is a process appreciated in fields such as aerospace (e.g., screws without cracks), automotive (splines on the engine shaft), and the railway, oil & gas, wind turbine, and off-road fields (earthmoving and farming machines), also thanks to the reduction in costs of the product.

The advantages of the rolling process can be summed up as follows:

  • In threading, an increase in resistance of the thread tooth is obtained, with subsequent greater resistance to wear.
  • In general, excellent roughness is obtained on the thread side and on the base radius, also improving the values that can be obtained by grinding.
  • No interruption in the progress of the fibre of the raw material, unlike removed or milled threading.
  • Reduced sensitivity to notching.
  • Increased productivity and resulting efficiency and cost-effectiveness of the process.
APPLICATIONS FOR THREADING

BAR THREADING TO OBTAIN MANOEUVRING SCREWS, MOVEMENT SCREWS, AND BALL RECIRCULATION SCREWS

The so-called “in passing” roll threading process typically starts from the processing of steel bars, which are completely threaded.

From this, screws in the length desired are obtained, which are processed at the ends for support and motion transmission.

Screws threaded by rolling, paired with sliding nuts, constitute a translation system used in a wide range of applications, both for manoeuvring heavy loads (rolled trapezoidal screws) and for moving lighter equipment with the need for greater speed (movement screws).

Roll threading also allows the creation of profiles for pairing with ball circulation nuts. Rolled screws for ball circulation nuts are one of the excellent potentials of roll threading, where precision is reached with advanced technology and processes with CNC numeric control.

ROLL THREADING OF SEMI-FINISHED PRODUCTS

The so called “dive” roll threading starts with the processing of previously turned components.

The excellence of the end result is also related to the quality of the preparatory turning phase, a synergy with which we have vast experience and expertise.

Roll threading on mechanical components (M, Tr, WhitWorth, UNC, UNF, UNEF threads) is a choice bound for special used (avionics) and ensures excellent resistance and finish.

Their synergy with our departments in the REMOVAL division allows a wide range of components with removed threading.

APPLICATIONS FOR FORMING

ROLLED WORMS

With rolling, plastic shaping of steel can be obtained to create precision worms, which are typically paired with crown gears in angular motion transmission or reduction applications.

These are processes where the movement of the material is very high and therefore, millesimal control of the large compression power involved is fundamental.

The most suitable generation of rolling machines is the numerically controlled one, which can manage the PSF (precision screw forming) process.

Rolling on tailstocks is the most advanced technical solution to create worms with an appreciable degree of precision, even in applications where worms obtained by notch forming are usually used.

ROLLED SPLINES (PARALLEL SPLINING)

Forced seating is a type of shaft-hub connection.

The shaft spline can be obtained by rolling using a rack or rollers.

Rack splining offers process stability and high productivity.

Splining with rollers offers size flexibility and extreme precision on the involutes.

APPLICATIONS FOR SURFACE SUPERFINISHING

Rolled superfinishing, also known as lapping, may be considered to be an excellent solution for obtaining surface finishes on cylindrical parts with low roughness.

The roughness values that can be obtained with this process are better than grinding and can be performed in a highly efficient and economical manner.

The synergy and continuous feedback between turning and the subsequent rolled superfinishing are indispensable for obtaining excellent results.

Shafts, rods, and drive screws in the valve sector are just a few of the typical applications of this process.

THE MONTESI ADVANTAGES IN PRODUCTS WITH ROLL THREADING

SCREWS

  • Availability of a vast warehouse of rolling tools for different types of thread geometry.
  • Wide range of diameters obtainable, left-right versions, single and multi start.
  • Screws in carbon steel, ETG, special high-resistance steels, stainless steel, and aluminium. • Standard product range available in the warehouse and on the industrial distribution market.

NUTS

  • Specialisation in high quality turning threading for obtain nuts that ensure excellent pairing on rolled screws of every thread type.
  •  Control and customization of the screw coupling runouts.
  • Highly productive and flexible turning department for the production of nuts with conventional or non-standard shapes.
  • Processing of metal and plastic materials.
  • Innovative solutions for dual material modular nuts.

MADE-TO-ORDER AND SPECIAL PRODUCTS

  • Rolled screws with end processing made-to-order according to the support and motion transmission requirements identified by the designer.
  • Nuts in special materials and with processing of the shapes according to the requirements identified by the designer.
  • Setup of special thread profiles in collaboration with our rolling tools supplier partners.
  • Possibility of laboratory tests to empirically measure the performance of the nut-screw system.
  • Collaboration with primary treatment companies to provide special protective surface coatings or those that improve the friction coefficient.

More details in the Products to design page

[node:field_sections:0:entity] Rolling > Sections
[node:field_sections:0:entity:field_accordion]
THE ROLLING PROCESS AND ITS ADVANTAGES

Rolling is a mechanical process without chip removal that provides for the creation of threads, forming, and surface superfinishing by passing the piece between rolling tools in continuous rotation, which deform and refinish the outer surface of the raw material until the desired shape and sizes are reached.

Rolling is preferred to turning and grinding since plastic deformation on the piece involves the hardening of the material, increasing its hardness and preserving its mechanical properties. Also, since cracks cannot be detected, the rolled product has a better fatigue strength.

This is a process appreciated in fields such as aerospace (e.g., screws without cracks), automotive (splines on the engine shaft), and the railway, oil & gas, wind turbine, and off-road fields (earthmoving and farming machines), also thanks to the reduction in costs of the product.

The advantages of the rolling process can be summed up as follows:

  • In threading, an increase in resistance of the thread tooth is obtained, with subsequent greater resistance to wear.
  • In general, excellent roughness is obtained on the thread side and on the base radius, also improving the values that can be obtained by grinding.
  • No interruption in the progress of the fibre of the raw material, unlike removed or milled threading.
  • Reduced sensitivity to notching.
  • Increased productivity and resulting efficiency and cost-effectiveness of the process.
,
APPLICATIONS FOR THREADING

BAR THREADING TO OBTAIN MANOEUVRING SCREWS, MOVEMENT SCREWS, AND BALL RECIRCULATION SCREWS

The so-called “in passing” roll threading process typically starts from the processing of steel bars, which are completely threaded.

From this, screws in the length desired are obtained, which are processed at the ends for support and motion transmission.

Screws threaded by rolling, paired with sliding nuts, constitute a translation system used in a wide range of applications, both for manoeuvring heavy loads (rolled trapezoidal screws) and for moving lighter equipment with the need for greater speed (movement screws).

Roll threading also allows the creation of profiles for pairing with ball circulation nuts. Rolled screws for ball circulation nuts are one of the excellent potentials of roll threading, where precision is reached with advanced technology and processes with CNC numeric control.

ROLL THREADING OF SEMI-FINISHED PRODUCTS

The so called “dive” roll threading starts with the processing of previously turned components.

The excellence of the end result is also related to the quality of the preparatory turning phase, a synergy with which we have vast experience and expertise.

Roll threading on mechanical components (M, Tr, WhitWorth, UNC, UNF, UNEF threads) is a choice bound for special used (avionics) and ensures excellent resistance and finish.

Their synergy with our departments in the REMOVAL division allows a wide range of components with removed threading.

,
APPLICATIONS FOR FORMING

ROLLED WORMS

With rolling, plastic shaping of steel can be obtained to create precision worms, which are typically paired with crown gears in angular motion transmission or reduction applications.

These are processes where the movement of the material is very high and therefore, millesimal control of the large compression power involved is fundamental.

The most suitable generation of rolling machines is the numerically controlled one, which can manage the PSF (precision screw forming) process.

Rolling on tailstocks is the most advanced technical solution to create worms with an appreciable degree of precision, even in applications where worms obtained by notch forming are usually used.

ROLLED SPLINES (PARALLEL SPLINING)

Forced seating is a type of shaft-hub connection.

The shaft spline can be obtained by rolling using a rack or rollers.

Rack splining offers process stability and high productivity.

Splining with rollers offers size flexibility and extreme precision on the involutes.

,
APPLICATIONS FOR SURFACE SUPERFINISHING

Rolled superfinishing, also known as lapping, may be considered to be an excellent solution for obtaining surface finishes on cylindrical parts with low roughness.

The roughness values that can be obtained with this process are better than grinding and can be performed in a highly efficient and economical manner.

The synergy and continuous feedback between turning and the subsequent rolled superfinishing are indispensable for obtaining excellent results.

Shafts, rods, and drive screws in the valve sector are just a few of the typical applications of this process.

,
THE MONTESI ADVANTAGES IN PRODUCTS WITH ROLL THREADING

SCREWS

  • Availability of a vast warehouse of rolling tools for different types of thread geometry.
  • Wide range of diameters obtainable, left-right versions, single and multi start.
  • Screws in carbon steel, ETG, special high-resistance steels, stainless steel, and aluminium. • Standard product range available in the warehouse and on the industrial distribution market.

NUTS

  • Specialisation in high quality turning threading for obtain nuts that ensure excellent pairing on rolled screws of every thread type.
  •  Control and customization of the screw coupling runouts.
  • Highly productive and flexible turning department for the production of nuts with conventional or non-standard shapes.
  • Processing of metal and plastic materials.
  • Innovative solutions for dual material modular nuts.

MADE-TO-ORDER AND SPECIAL PRODUCTS

  • Rolled screws with end processing made-to-order according to the support and motion transmission requirements identified by the designer.
  • Nuts in special materials and with processing of the shapes according to the requirements identified by the designer.
  • Setup of special thread profiles in collaboration with our rolling tools supplier partners.
  • Possibility of laboratory tests to empirically measure the performance of the nut-screw system.
  • Collaboration with primary treatment companies to provide special protective surface coatings or those that improve the friction coefficient.

More details in the Products to design page

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[node:field_sections:1]

EQUIPMENT

Rolling machines:

  • 1 high-precision CNC rolling machine for rolling on tailstocks
  • 1 CNC rolling machine for bar threading
  • 4 rolling machines for bar threading
  • 1 rolling machine for special plunge threading

Rack forming rolling machine:

  • • 1 unit for rolled splines with automation
  • 1 manned unit for rolled splines

Rolling tools:

  • Extensive roller warehouse
[node:field_sections:1:entity] Rolling > Sections
[node:field_sections:1:entity:field_image]
[node:field_sections:1:entity:behavior_settings] a:0:{}
[node:field_sections:1:entity:created] Tue, 07/02/2019 - 11:35
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[node:field_sections:1:entity:langcode] English
[node:field_sections:1:entity:type] Testo ed immagine a lato
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[node:field_sections:1:entity:parent_id] 28
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[node:field_sections:1:entity:revision_id] 4979
[node:field_sections:1:entity:field_sfondo_verde] Spento
[node:field_sections:1:entity:field_testo]

EQUIPMENT

Rolling machines:

  • 1 high-precision CNC rolling machine for rolling on tailstocks
  • 1 CNC rolling machine for bar threading
  • 4 rolling machines for bar threading
  • 1 rolling machine for special plunge threading

Rack forming rolling machine:

  • • 1 unit for rolled splines with automation
  • 1 manned unit for rolled splines

Rolling tools:

  • Extensive roller warehouse
[node:field_sections:1:entity:content_translation_outdated] Off
[node:field_sections:1:entity:content_translation_source] Not specified
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[node:field_sections:1:target_id] 532
[node:field_sections:1:target_revision_id] 4979
[node:field_sections:2]

ROLL THREADING TECHNOLOGY

Trapezoidal profile manoeuvring screw threading

Drive/multi-start screw threading

Recirculation screw threading

Automated straightening

Learn more

[node:field_sections:2:entity] Rolling > Sections
[node:field_sections:2:entity:field_image]
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[node:field_sections:2:entity:created] Tue, 07/02/2019 - 11:36
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[node:field_sections:2:entity:type] Testo ed immagine a lato
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[node:field_sections:2:entity:revision_id] 4980
[node:field_sections:2:entity:field_sfondo_verde] Acceso
[node:field_sections:2:entity:field_testo]

ROLL THREADING TECHNOLOGY

Trapezoidal profile manoeuvring screw threading

Drive/multi-start screw threading

Recirculation screw threading

Automated straightening

Learn more

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[node:summary] <p>La tecnologia della filettatura rullata ( processo di deformazione a freddo dell'acciaio ) è stata introdotta dal fondatore Paolo Montesi all'alba degli anni '80, rappresentando all'epoca un processo "particolare e poco conosciuto" seppur sviluppato dall'industria tedesca già nei primi anni del novecento.</p> <p>Le prime rullatrici tedesche rappresentarono un apripista nell'approfondimento dei vantaggi del processo legati alla produttività ed economicità della filettatura rullata.</p>
[node:field_tags]
[node:field_read_more_text]
[node:field_tipologia]
[node:title] Rolling
[node:source]
[node:source:author] david
[node:source:author:account-name] david
[node:source:author:created] Thu, 06/27/2019 - 16:47
[node:source:author:created:fallback] Thu, 06/27/2019 - 16:47
[node:source:author:created:html_date] 2019-06-27
[node:source:author:created:html_datetime] 2019-06-27T16:47:42+0200
[node:source:author:created:html_month] 2019-06
[node:source:author:created:html_time] 16:47:42
[node:source:author:created:html_week] 2019-W26
[node:source:author:created:html_year] 2019
[node:source:author:created:html_yearless_date] 06-27
[node:source:author:created:long] Thursday, June 27, 2019 - 16:47
[node:source:author:created:medium] Thu, 06/27/2019 - 16:47
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[node:source:author:created:short] 06/27/2019 - 16:47
[node:source:author:created:since] 3 years 8 months
[node:source:author:name] david
[node:source:author:display-name] david
[node:source:author:edit-url] https://www.montesi.it/it/user/15/edit
[node:source:author:mail] david@weevo.it
[node:source:author:last-login] Fri, 11/25/2022 - 08:17
[node:source:author:last-login:fallback] Fri, 11/25/2022 - 08:17
[node:source:author:last-login:html_date] 2022-11-25
[node:source:author:last-login:html_datetime] 2022-11-25T08:17:23+0100
[node:source:author:last-login:html_month] 2022-11
[node:source:author:last-login:html_time] 08:17:23
[node:source:author:last-login:html_week] 2022-W47
[node:source:author:last-login:html_year] 2022
[node:source:author:last-login:html_yearless_date] 11-25
[node:source:author:last-login:long] Friday, November 25, 2022 - 08:17
[node:source:author:last-login:medium] Fri, 11/25/2022 - 08:17
[node:source:author:last-login:raw] 1669360643
[node:source:author:last-login:short] 11/25/2022 - 08:17
[node:source:author:last-login:since] 3 months 2 weeks
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La tecnologia della filettatura rullata ( processo di deformazione a freddo dell'acciaio ) è stata introdotta dal fondatore Paolo Montesi all'alba degli anni '80, rappresentando all'epoca un processo "particolare e poco conosciuto" seppur sviluppato dall'industria tedesca già nei primi anni del novecento.

Le prime rullatrici tedesche rappresentarono un apripista nell'approfondimento dei vantaggi del processo legati alla produttività ed economicità della filettatura rullata.

La crescita aziendale è stata accompagnata anche dalla diffusione sul mercato nazionale ed europeo dei prodotti rullati Montesi, tanto da riconoscere il brand associandolo al prodotto.

Negli ultimi decenni l'esperienza sulla rullatura si è estesa anche ai processi di formatura per ottenere viti senza fine e splines, attribuendo a Montesi il riconoscimento di azienda di riferimento a livello italiano ed europeo nelle forniture di prodotti rullati di elevata qualità.

Ad oggi possiamo vantare collaborazioni con importanti multinazionali europee per forniture e prototipazioni di componenti meccanici sui quali la rullatura assume importanza strategica.

[node:source:nid] 28
[node:source:content-type] Basic page
[node:source:content-type:description] Use <em>basic pages</em> for your static content, such as an 'About us' page.
[node:source:content-type:edit-url] https://www.montesi.it/en/admin/structure/types/manage/page
[node:source:content-type:machine-name] page
[node:source:content-type:name] Basic page
[node:source:content-type:node-count] 1
[node:source:changed] Wed, 12/23/2020 - 10:24
[node:source:changed:fallback] Wed, 12/23/2020 - 10:24
[node:source:changed:html_date] 2020-12-23
[node:source:changed:html_datetime] 2020-12-23T10:24:57+0100
[node:source:changed:html_month] 2020-12
[node:source:changed:html_time] 10:24:57
[node:source:changed:html_week] 2020-W52
[node:source:changed:html_year] 2020
[node:source:changed:html_yearless_date] 12-23
[node:source:changed:long] Wednesday, December 23, 2020 - 10:24
[node:source:changed:medium] Wed, 12/23/2020 - 10:24
[node:source:changed:raw] 1608715497
[node:source:changed:short] 12/23/2020 - 10:24
[node:source:changed:since] 2 years 2 months
[node:source:created] Fri, 06/28/2019 - 09:49
[node:source:created:fallback] Fri, 06/28/2019 - 09:49
[node:source:created:html_date] 2019-06-28
[node:source:created:html_datetime] 2019-06-28T09:49:50+0200
[node:source:created:html_month] 2019-06
[node:source:created:html_time] 09:49:50
[node:source:created:html_week] 2019-W26
[node:source:created:html_year] 2019
[node:source:created:html_yearless_date] 06-28
[node:source:created:long] Friday, June 28, 2019 - 09:49
[node:source:created:medium] Fri, 06/28/2019 - 09:49
[node:source:created:raw] 1561708190
[node:source:created:short] 06/28/2019 - 09:49
[node:source:created:since] 3 years 8 months
[node:source:edit-url] https://www.montesi.it/it/node/28/edit
[node:source:field_fullwidth_text] Spento
[node:source:field_highlight]

Il truciolo lo facciamo da sempre.
Poi abbiamo deciso di fare anche altro.

[node:source:field_highlight:value] <p>Il truciolo lo facciamo da sempre.<br /> Poi abbiamo deciso di fare anche altro.</p>
[node:source:field_highlight:format] basic_html
[node:source:langcode] it
[node:source:field_metatags:value] a:2:{s:5:"title";s:60:"Rullatura meccanica di filetti, viti e splines | [site:name]";s:11:"description";s:155:"La Torneria Montesi è leader tecnologico su scala nazionale nelle lavorazioni di deformazione a freddo mediante rullatura. Scopri di più sul nostro sito!";}
[node:source:vid] 1405
[node:source:field_sections]
Il processo di rullatura e i suoi vantaggi

La rullatura è un processo di lavorazione meccanica senza asportazione di truciolo che prevede la realizzazione di filetti, formature e superfiniture superficiali attraverso il passaggio del pezzo tra utensili rullatori in rotazione continua, i quali deformano e rifiniscono la superficie esterna della materia prima fino al raggiungimento delle geometrie e dimensioni volute.

La rullatura viene preferita alla tornitura ed alla molatura in quanto la deformazione plastica cui è sottoposto il pezzo comporta l’incrudimento del materiale, aumentandone la durezza e la conservazione delle sue proprietà meccaniche; inoltre, non essendo rilevabile la presenza di cricche, il prodotto rullato presenta una migliore resistenza alla fatica.

Si tratta di lavorazione apprezzata in ambito aerospace (ad es. viti prive di cricche), automotive (spline su albero motore) così come nei settori del ferroviario , oil & gas, eolico e offroad (macchine per il movimento terra e agricole), anche grazie alla riduzione dei costi del prodotto.

I vantaggi del processo di rullatura possono essere così riepilogati:

  • Nella filettatura si ottiene un aumento della resistenza del dente filetto con conseguente maggior resistenza all'usura.
  • In generale si ottengono eccellenti valori di rugosità sul fianco filetto e sul raggio di base, migliorativi anche dei valori ottenibili per rettifica.
  • Mancanza di interruzione dell’andamento delle fibre della materia prima a differenza della filettatura asportata o fresata.
  • Ridotta sensibilità all'intaglio.
  • Elevata produttività e conseguente efficienza ed economicità del processo.
Le applicazioni per la filettatura

FILETTATURA DI BARRE PER OTTENIMENTO DI VITI DI MANOVRA, MOVIMENTAZIONE, VITI A RICIRCOLO DI SFERE

Il processo di filettatura rullata cosiddetta "in passata" parte tipicamente dalla lavorazione di barre di acciaio le quali vengono interamente filettate.

Da queste si ottengono viti delle lunghezza desiderata e lavorate nei terminali per il supporto e la trasmissione del moto.

Le viti filettate con rullatura, accoppiate con madreviti a strisciamento, costituiscono un sistema di traslazione impiegato in un vasto ambito di applicazioni, sia per la manovra di carichi pesanti (viti rullate trapezoidali), sia per la movimentazione di apparati più leggeri con esigenza di maggiore velocità (viti di movimentazione).

La filettatura rullata permette anche di ottenere profili per l'accoppiamento con madreviti a ricircolo di sfere. Le viti rullate per madreviti a ricircolo di sfere rappresentano una delle eccellenze delle potenzialità della filettatura rullata, laddove la precisione è raggiunta con tecnologie e processi avanzati a controllo numerico CNC.

FILETTATURE RULLATE DI SEMILAVORATI

Il processo di filettatura rullata cosiddetta "a tuffo" parte dalla lavorazione di componenti precedentemente torniti.

L'eccellenza del risultato finale è funzione anche della qualità della fase preparatoria di tornitura, sinergia nella quale vantiamo vasto know how ed esperienza.

La filettatura rullata su componenti meccanici (filetti M, Tr, WhitWorth, UNC, UNF, UNEF,) rappresenta una scelta vincolata per destinazioni speciali ( avionica) e comunque garantisce eccellenti caratteristiche di resistenza e finitura.

La sinergia con i nostri reparti della divisione ASPORTAZIONE permette di ottenere una vasta tipologia di componenti con filettatura asportata.

Le applicazioni per la formatura

VITI SENZA FINE RULLATE (WORMS)

Con la rullatura si possono ottenere formature plastiche dell'acciaio per creare viti senza fine di precisione, le quali sono tipicamente accoppiate con corone dentate in applicazioni di trasmissione angolare del moto o di riduzione dello stesso.

Si tratta di processi ove lo spostamento del materiale è molto elevato e pertanto è fondamentale il controllo millesimale delle grandi potenze di compressione che sono coinvolte.

La generazione di rullatrici più indicata è quella a controllo numerico, in grado di gestire il cosidetto processo PSF ( precision scew forming ).

La rullatura su contropunte rappresenta la soluzione tecnica più avanzata per ottenere worms con grado di precisione apprezzabile anche in applicazioni ove solitamente vengono impiegate viti senza fine ottenute per intaglio.

SPLINES RULLATI ( SCANALATURA PARALLELA )

Il calettamento forzato è una forma di collegamento albero-mozzo.

La scanalatura dell'albero (spline) può essere ottenuta per rullatura mediante tecnologia a cremagliera od a rulli.

La scanalatura a cremagliera offre vantaggi di stabilità di processo ed altissima produttività.

La scanalatura con rulli offre flessibilità dimensionale ed estrema precisione sugli evolventi.

Le applicazioni per la superfinitura superficiale

La superfinitura rullata, nota anche come lappatura, può essere considerata un'ottima soluzione per ottenere finiture superficiali di parti cilindriche a bassissima rugosità.

I valori di rugosità ottenibili con questo processo sono migliorativi di quelli di rettifica ed eseguibili in maniera fortemente efficiente ed economica.

La sinergia ed il feedback continuo fra tornitura e successiva superfinitura rullata sono indispensabili per ottenere risultati eccellenti.

Alberi, steli, viti di comando nel settore valvole sono alcune delle applicazioni tipiche di tale lavorazione.

I plus Montesi nei prodotti con filettatura rullata

VITI

  • Disponibilità vastissimo magazzino utensili rullatori per differenti tipologie di geometria filetto.
  • Estesa gamma diametri ottenibili, versioni destre-sinistre, mono e pluri principio.
  • Viti in acciaio al carbonio, ETG, acciai speciali ad alta resistenza, acciaio inox, alluminio.
  • Gamma prodotti standard disponibile a magazzino e reperibile sul mercato della distribuzione industriale.

MADREVITI

  • Specializzazione nella filettatura asportata di elevata qualità per ottenere madreviti che garantiscano accoppiamenti eccellenti con viti rullate di ogni tipologia filetto.
  • Controllo e personalizzazione dei runout di accoppiamento.
  • Reparti tornitura altamente produttivi e flessibili per la produzione di madreviti con forme convenzionali o fuori standard.
  • Lavorazione di materiali metallici e plastici.
  • Soluzioni innovative per madreviti modulari a doppio materiale.

PRODOTTI A DISEGNO E SPECIALI

  • Viti rullate con lavorazione terminali a disegno secondo le esigenze di supporto e trasmissione moto identificate dai progettisti.
  • Madreviti in materiali speciali e con lavorazione delle forme secondo le esigenze identificate dai progettisti.
  • Messa a punto di profili filetto speciali in collaborazione con i nostri partner fornitori di utensili rullatori.
  • Possibilità di test di laboratorio per misurare empiricamente il rendimento del sistema vite-madrevite.
  • Collaborazione con primarie aziende trattamentiste per fornire trattamenti superficiali protettivi o migliorativi del coefficiente di attrito.

Maggiori dettagli nella sezione Produzioni a disegno

,

Attrezzatura

Rullatrici:

  • 1 rullatrice CNC ad alta precisione per rullature su contropunte
  • 1 rullatrice CNC per filettatura a barre
  • 4 rullatrici per filettatura barre
  • 1 rullatrice per filettature speciali a tuffo

Rack forming rolling machine:

  • 1 unità per splines rullati con automazione
  • 1 unità per splines rullati presidiata

Utensili rullatori

  • Magazzino rulli vastissimo
,

TECNOLOGIE FILETTATURA RULLATA

Filettatura viti di manovra a profilo trapezoidale

Filettatura viti di comando/multiprincipio

Filettatura viti ricircolo

Raddrizzatura automatizzata

Leggi di più

,

TECNOLOGIE ROLL FORMING

Formatura viti senza fine (worms)

Formatura splines

Leggi di più

 

,
Text

Perché Montesi

  • Leader tecnologico a livello nazionale nelle lavorazioni di rullatura.
  • Prodotti standard e prodotti a disegno a copertura delle esigenze di segmenti di mercato differenti.
  • Studi e prove di rullatura su prodotti speciali in corso di prototipazione per ottimizzarne le performance.
  • Esperienza maturata in settori diversificati, dall'edilizia al motor sport (Formula 1).
  • Partnership con fornitori di eccellenza mondiale nella produzione di macchinari ed utensili rullatori.
[node:source:field_sections:0]
Il processo di rullatura e i suoi vantaggi

La rullatura è un processo di lavorazione meccanica senza asportazione di truciolo che prevede la realizzazione di filetti, formature e superfiniture superficiali attraverso il passaggio del pezzo tra utensili rullatori in rotazione continua, i quali deformano e rifiniscono la superficie esterna della materia prima fino al raggiungimento delle geometrie e dimensioni volute.

La rullatura viene preferita alla tornitura ed alla molatura in quanto la deformazione plastica cui è sottoposto il pezzo comporta l’incrudimento del materiale, aumentandone la durezza e la conservazione delle sue proprietà meccaniche; inoltre, non essendo rilevabile la presenza di cricche, il prodotto rullato presenta una migliore resistenza alla fatica.

Si tratta di lavorazione apprezzata in ambito aerospace (ad es. viti prive di cricche), automotive (spline su albero motore) così come nei settori del ferroviario , oil & gas, eolico e offroad (macchine per il movimento terra e agricole), anche grazie alla riduzione dei costi del prodotto.

I vantaggi del processo di rullatura possono essere così riepilogati:

  • Nella filettatura si ottiene un aumento della resistenza del dente filetto con conseguente maggior resistenza all'usura.
  • In generale si ottengono eccellenti valori di rugosità sul fianco filetto e sul raggio di base, migliorativi anche dei valori ottenibili per rettifica.
  • Mancanza di interruzione dell’andamento delle fibre della materia prima a differenza della filettatura asportata o fresata.
  • Ridotta sensibilità all'intaglio.
  • Elevata produttività e conseguente efficienza ed economicità del processo.
Le applicazioni per la filettatura

FILETTATURA DI BARRE PER OTTENIMENTO DI VITI DI MANOVRA, MOVIMENTAZIONE, VITI A RICIRCOLO DI SFERE

Il processo di filettatura rullata cosiddetta "in passata" parte tipicamente dalla lavorazione di barre di acciaio le quali vengono interamente filettate.

Da queste si ottengono viti delle lunghezza desiderata e lavorate nei terminali per il supporto e la trasmissione del moto.

Le viti filettate con rullatura, accoppiate con madreviti a strisciamento, costituiscono un sistema di traslazione impiegato in un vasto ambito di applicazioni, sia per la manovra di carichi pesanti (viti rullate trapezoidali), sia per la movimentazione di apparati più leggeri con esigenza di maggiore velocità (viti di movimentazione).

La filettatura rullata permette anche di ottenere profili per l'accoppiamento con madreviti a ricircolo di sfere. Le viti rullate per madreviti a ricircolo di sfere rappresentano una delle eccellenze delle potenzialità della filettatura rullata, laddove la precisione è raggiunta con tecnologie e processi avanzati a controllo numerico CNC.

FILETTATURE RULLATE DI SEMILAVORATI

Il processo di filettatura rullata cosiddetta "a tuffo" parte dalla lavorazione di componenti precedentemente torniti.

L'eccellenza del risultato finale è funzione anche della qualità della fase preparatoria di tornitura, sinergia nella quale vantiamo vasto know how ed esperienza.

La filettatura rullata su componenti meccanici (filetti M, Tr, WhitWorth, UNC, UNF, UNEF,) rappresenta una scelta vincolata per destinazioni speciali ( avionica) e comunque garantisce eccellenti caratteristiche di resistenza e finitura.

La sinergia con i nostri reparti della divisione ASPORTAZIONE permette di ottenere una vasta tipologia di componenti con filettatura asportata.

Le applicazioni per la formatura

VITI SENZA FINE RULLATE (WORMS)

Con la rullatura si possono ottenere formature plastiche dell'acciaio per creare viti senza fine di precisione, le quali sono tipicamente accoppiate con corone dentate in applicazioni di trasmissione angolare del moto o di riduzione dello stesso.

Si tratta di processi ove lo spostamento del materiale è molto elevato e pertanto è fondamentale il controllo millesimale delle grandi potenze di compressione che sono coinvolte.

La generazione di rullatrici più indicata è quella a controllo numerico, in grado di gestire il cosidetto processo PSF ( precision scew forming ).

La rullatura su contropunte rappresenta la soluzione tecnica più avanzata per ottenere worms con grado di precisione apprezzabile anche in applicazioni ove solitamente vengono impiegate viti senza fine ottenute per intaglio.

SPLINES RULLATI ( SCANALATURA PARALLELA )

Il calettamento forzato è una forma di collegamento albero-mozzo.

La scanalatura dell'albero (spline) può essere ottenuta per rullatura mediante tecnologia a cremagliera od a rulli.

La scanalatura a cremagliera offre vantaggi di stabilità di processo ed altissima produttività.

La scanalatura con rulli offre flessibilità dimensionale ed estrema precisione sugli evolventi.

Le applicazioni per la superfinitura superficiale

La superfinitura rullata, nota anche come lappatura, può essere considerata un'ottima soluzione per ottenere finiture superficiali di parti cilindriche a bassissima rugosità.

I valori di rugosità ottenibili con questo processo sono migliorativi di quelli di rettifica ed eseguibili in maniera fortemente efficiente ed economica.

La sinergia ed il feedback continuo fra tornitura e successiva superfinitura rullata sono indispensabili per ottenere risultati eccellenti.

Alberi, steli, viti di comando nel settore valvole sono alcune delle applicazioni tipiche di tale lavorazione.

I plus Montesi nei prodotti con filettatura rullata

VITI

  • Disponibilità vastissimo magazzino utensili rullatori per differenti tipologie di geometria filetto.
  • Estesa gamma diametri ottenibili, versioni destre-sinistre, mono e pluri principio.
  • Viti in acciaio al carbonio, ETG, acciai speciali ad alta resistenza, acciaio inox, alluminio.
  • Gamma prodotti standard disponibile a magazzino e reperibile sul mercato della distribuzione industriale.

MADREVITI

  • Specializzazione nella filettatura asportata di elevata qualità per ottenere madreviti che garantiscano accoppiamenti eccellenti con viti rullate di ogni tipologia filetto.
  • Controllo e personalizzazione dei runout di accoppiamento.
  • Reparti tornitura altamente produttivi e flessibili per la produzione di madreviti con forme convenzionali o fuori standard.
  • Lavorazione di materiali metallici e plastici.
  • Soluzioni innovative per madreviti modulari a doppio materiale.

PRODOTTI A DISEGNO E SPECIALI

  • Viti rullate con lavorazione terminali a disegno secondo le esigenze di supporto e trasmissione moto identificate dai progettisti.
  • Madreviti in materiali speciali e con lavorazione delle forme secondo le esigenze identificate dai progettisti.
  • Messa a punto di profili filetto speciali in collaborazione con i nostri partner fornitori di utensili rullatori.
  • Possibilità di test di laboratorio per misurare empiricamente il rendimento del sistema vite-madrevite.
  • Collaborazione con primarie aziende trattamentiste per fornire trattamenti superficiali protettivi o migliorativi del coefficiente di attrito.

Maggiori dettagli nella sezione Produzioni a disegno

[node:source:field_sections:0:entity] Rullatura > Sections
[node:source:field_sections:0:target_id] 129
[node:source:field_sections:0:target_revision_id] 5163
[node:source:field_sections:1]

Attrezzatura

Rullatrici:

  • 1 rullatrice CNC ad alta precisione per rullature su contropunte
  • 1 rullatrice CNC per filettatura a barre
  • 4 rullatrici per filettatura barre
  • 1 rullatrice per filettature speciali a tuffo

Rack forming rolling machine:

  • 1 unità per splines rullati con automazione
  • 1 unità per splines rullati presidiata

Utensili rullatori

  • Magazzino rulli vastissimo
[node:source:field_sections:1:entity] Rullatura > Sections
[node:source:field_sections:1:target_id] 126
[node:source:field_sections:1:target_revision_id] 5164
[node:source:field_sections:2]

TECNOLOGIE FILETTATURA RULLATA

Filettatura viti di manovra a profilo trapezoidale

Filettatura viti di comando/multiprincipio

Filettatura viti ricircolo

Raddrizzatura automatizzata

Leggi di più

[node:source:field_sections:2:entity] Rullatura > Sections
[node:source:field_sections:2:target_id] 127
[node:source:field_sections:2:target_revision_id] 5165
[node:source:summary] <p>La tecnologia della filettatura rullata ( processo di deformazione a freddo dell'acciaio ) è stata introdotta dal fondatore Paolo Montesi all'alba degli anni '80, rappresentando all'epoca un processo "particolare e poco conosciuto" seppur sviluppato dall'industria tedesca già nei primi anni del novecento.</p> <p>Le prime rullatrici tedesche rappresentarono un apripista nell'approfondimento dei vantaggi del processo legati alla produttività ed economicità della filettatura rullata.</p>
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