All machines from the category Internal cylindrical grinding machine

How a CNC internal cylindrical grinding machine works

The internal cylindrical grinding machine is a high-precision machine tool for machining the internal surfaces of cylindrical or conical workpieces. Its main purpose is to grind internal bores to tight dimensional tolerances and with excellent surface quality. The machining process is carried out using a rotating grinding wheel that machines the inner surface of the workpiece at high Speed and with minimal material removal.

The workpiece is usually mounted on a clamping device in the workpiece spindle or supported on a tailstock. The grinding wheel is mounted on a separate spindle, which either rotates into the workpiece or is fed linearly in precise movements. Depending on the machine type and application, the grinding processes can be controlled manually, semi-automatically or fully automatically (CNC).

Structure of a CNC internal cylindrical grinding machine

A CNC internal cylindrical grinding machine consists of the following components: the machine bed as a stable base, a workpiece spindle or tailstock for holding and rotating the workpiece, the grinding spindle with mounted grinding wheel for the machining process, as well as precise traversing units for infeed in the longitudinal and transverse directions. Other important elements are the CNC control unit, coolant supply, protective panelling and often an integrated measuring system for quality assurance. High-quality bearings and low-vibration drives ensure precise machining.

Other types of cylindrical grinding machines

At maschinenauswahl.de, we differentiate between the following types of cylindrical grinding machines:

• External cylindrical grinding machine
• Internal cylindrical grinding machine
• Universal cylindrical grinding machine
• Centreless grinding machine

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Production with the CNC internal cylindrical grinding machine

Internal cylindrical grinding is particularly demanding, as accessibility is limited and high demands are placed on the rigidity and thermal stability of the machine. In order to achieve perfect roundness and cylindrical shape, the use of high-quality grinding wheels made of CBN or corundum is common. Modern machines often have automatic measuring systems and Controls that enable continuous process monitoring and readjustment.

Application in industrial metalworking

CNC internal cylindrical grinding machines are used in numerous branches of industry, especially where maximum precision is required in internal bores. Typical sectors include the automotive industry, mechanical engineering, aerospace, hydraulic and pneumatic engineering, medical technology and the bearing industry.

Examples of workpieces that are manufactured using CNC internal cylindrical grinding machines include

• cylinder liners
• bearing housings
• Hydraulic cylinders
• injection nozzles
• engine shafts
• Gear wheels with internal bore
• Spindle sleeves
• Precision bushes
• Gearbox housings
• Piston guides

The machine tools guarantee compliance with tight tolerances and excellent surface quality, which is crucial for safety-relevant components.

Tools for a CNC internal cylindrical grinding machine

CNC internal cylindrical grinding machines mainly use the following tools:

• CBN grinding wheels
• Aluminium oxide grinding wheels
• Diamond grinding discs
• mounted points
• cup wheels
• Internal cylindrical grinding discs with shank
• Vitrified bonded grinding discs
• Resin-bonded grinding discs
• flexible grinding wheels
• Dressing tools for grinding wheels

These tools differ in terms of material, bond and geometry depending on the application and desired processing quality.

Accessories and equipment for a CNC internal cylindrical grinding machine

Various accessories and equipment are required to operate a CNC internal cylindrical grinding machine. These include clamping devices or three-jaw chucks for the workpiece holder interface, coolant systems for temperature control and flushing, as well as extraction devices for grinding dust. Equally important are dressing devices for shaping and cleaning the grinding wheels, as well as measuring systems for in-process control. High-quality coolant and abrasives make a decisive contribution to machining quality.

Leading manufacturers of CNC internal cylindrical grinding machines

In our manufacturers directory, you will find machine tool manufacturers that produce internal cylindrical grinding machines for metalworking.

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Selecting the right internal cylindrical grinding machine

If you want to buy a internal cylindrical grinding machine, there are several important features and specifications to consider.

• The maximum workpiece length and diameter determine the possible applications.
• The grinding spindle speed and its stability are also important - especially for high-precision applications.
• Control with freely programmable cycles enables flexible production.
• The positioning accuracy, infeed precision and repeatability of the axes directly influence the dimensional accuracy of the workpieces.
• Other relevant specifications include the power of the grinding spindle, the rigidity of the machine and the availability of automation solutions such as workpiece changers or measuring systems.
• Last but not least, the quality of the manufacturer's service offering also plays an important role.

Search now on maschinenauswahl.de for the CNC internal cylindrical grinding machine that suits your production requirements.