Contract Machining – Rough Turning

What is rough turning?

Rough turning is a process characterized by heavy machining, high material removal rates, and extensive stock removal. It is used to roughly shape workpieces such as shafts, axles, and rolls before they undergo further finishing operations. This stage focuses less on exact dimensional accuracy or fine surface quality and more on quickly achieving an approximate workpiece shape with a high rate of material removal.

During rough turning, robust roughing tools are used that are capable of efficiently removing large volumes of material, even from hard materials. These tools must withstand extreme loads, as machining is often carried out under high cutting forces.

The machines used for rough turning are therefore designed for high performance and stability in order to deliver the required material removal rates while still ensuring basic dimensional accuracy.

As part of a sampling procedure, approved measures are monitored annually. Any changes to approved measures must be reported to and approved by the competent authority. If necessary, the measures must be reapproved. Reportable changes include, among others, modifications to the title, duration, or content of a measure, conceptual changes, and adjusted cost rates.

Rough Turning is a process characterized by heavy machining, high material removal rates, and extensive stock removal. It is used to roughly shape workpieces such as shafts, axles, and rolls before they undergo further finishing operations. This stage focuses less on exact dimensional accuracy or fine surface quality and more on quickly achieving an approximate workpiece shape with a high rate of material removal.

During rough turning, robust roughing tools are used, capable of efficiently removing large volumes of material even from hard materials. These tools must withstand extreme loads, as the machining process often occurs under high cutting forces.

Rough turning is thus a powerful and indispensable process in metalworking, forming the foundation for precision work in subsequent manufacturing stages. By combining robust machines, experienced personnel, high-performance tools, and technical expertise, we are able to achieve excellent results even under these demanding conditions.

This process highlights our commitment to meeting our customers’ requirements from raw material to precisely machined final product.

 

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Special Features

Material Removal Volume

Does your component need to have several tons of material removed? Get in touch with us.

High Strength

Is your material difficult to machine? We have the machines and tools to handle it.

Rough Cast

We master the challenges posed by a cast skin, reducing tool wear to achieve the desired contour.

Rough Forged

The challenges posed by forged parts are part of our daily routine.

Impressions


Rough Turning Machine 05

 

The M05, a CNC roll-turning machine of the type Herkules HDK 450, is primarily used for rough turning at hhpm by Breitenbach. This machine can handle workpieces with a diameter of up to 1,040 mm over the bed and 800 mm over the support, with a length of up to 8,500 mm and a maximum weight of 25 tons. The CNC control of the M05 enables effective and targeted rough turning while optimizing material removal.


Rough Turning Machine 07

 

The M07, a manually operated roll-turning machine of the type Herkules WD 850, is distinguished at hhpm by Breitenbach by its particular suitability for extensive rough turning operations. This machine can handle workpieces with a maximum turning diameter of 1,550 mm over the bed and up to 1,300 mm over the support.

Its machining capacity extends to workpieces with a length of up to 7,500 mm and a weight of up to 38 tons, making it ideal for machining heavy cast and forged parts.


Rough Turning Machine 04

 

The introduction of the CNC machine M04 at hhpm by Breitenbach in late summer 2024 is intended to enhance capacities in the area of rough turning.

Designed for workpieces with a diameter of up to 500 mm, a length of up to 5,000 mm, and a maximum weight of 35 tons, the M04 enables efficient machining of cast and forged components.

We support you with our manufacturing capabilities for large, cylindrical components.

Our Range of Services

As a roller manufacturer, we have over 150 years of experience in machining large rotationally symmetrical components from a wide range of materials, such as cast iron, hard cast, forged steel, and high-chromium steel, as well as meeting requirements such as surface roughness, roundness accuracy, and cylindricity.

 

All Services

FAQ

What is rough turning?

Rough turning is a machining process in which large amounts of material are removed from workpieces such as shafts, axles, and rolls to roughly shape them. Robust roughing tools and high-performance machines are used to achieve basic dimensional accuracy before finishing operations.

Why is rough turning important?

Rough turning is important because it enables the initial shaping of workpieces, laying the foundation for subsequent finishing operations. It allows for rapid material removal and prepares the workpieces optimally for precise final machining. The rough turning process primarily aims to remove the cast or forged skin from the workpieces before further processing steps.

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