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Grinding machines 
123 List Grid
123Grinding machines
| Name of a product | Inventory number | Producer | YOM | Parameters | ||
|---|---|---|---|---|---|---|
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BRH 40/1500 |
241327 | Považské Strojárne | 1997 | Max. length of grinding: 1500 mm Max. width of grinding: 470 mm Max. workpiece height: 500 mm Spindle bearing grinders: Horizontální Work surface: 400x1500 mm Machine dimensions l x w x h: 5650x2300x2000 mm |
|
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BKO 50/1700 |
241346 | TOS Hostivař | Max. diameter of grinding: 500 mm Max. length of grinding: 1700 mm Max. weight of workpiece: 120 kg Main motor power: 7,5 kW Machine dimensions l x w x h: 4830x2550 mm Machine weight: 7800 kg |
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540L |
241369 | Jones & Shipman | Max. length of grinding: 480 mm Max. width of grinding: 170 mm Max. workpiece height: mm Spindle bearing grinders: Horizontální Table dimensions: 450x150 mm Main motor power: 1,5 kW |
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AWH 600 CNC |
241426 | PMT MACHINES | 2007 | Control system Siemens: Sinumerik 840 D Max. diameter of grinding: 350 mm Max. length of grinding: 600 mm Max. weight of workpiece: 80 kg Device for internal grinding: NO Travel X-axis: 400 mm |
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SA 6U |
241442 | WMW | Max. length of grinding: 1500 mm Max. width of grinding: 300 mm Max. workpiece height: mm Spindle bearing grinders: |
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RHU 750 |
241448 | Fritz Studer AG | Max. diameter of grinding: 250 mm Max. length of grinding: 750 mm Max. weight of workpiece: kg Device for internal grinding: NO Main motor power: 3 kW Machine dimensions l x w x h: 2400 x 1300 x 1500 mm |
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BUA 16 A |
241482 | TOS Hostivař | 1978 | Max. diameter of grinding: 160 mm Max. length of grinding: 250 mm Max. weight of workpiece: 10 kg Device for internal grinding: YES Machine dimensions l x w x h: 1900x1100x1500 mm Machine weight: 1400 kg |
Grinding is a technology of precision chip machining. Nowadays, it is possible to reach precision in order of tenths of micrometers and surface roughness of up to 0,2 micrometer. Grinders are thus indispensable in the machinery industry and form an important part of the production process. In general, grinding is a technology that works on the principle of the material removal from the surface layer of the workpiece with fine grains of abrasive material, which are most often bonded to the grinding wheel.
Grinders with centers and without centers:
Among the cylindrical grinders we differentiate grinders with centers and without centers. These machines are used for grinding internal and external rotating surfaces.
In case of center grinders the workpiece is usually clamped between centers and rotation is realized using a driver, which is fixed to the surface of the workpiece and tied to headstock. In most cases the workpiece rotates against the direction of rotation of the grinding wheel. Most common models from producer TOS we can mention:
- BHU,
- BUB,
- BUC,
- BUT,
- BUA,
- UB….and many others.
Grinding is realized using the rotation of the grinding wheel, which grinds the surface of the workpiece as it rotates. Most popular producers of such grinders are: FERMAT, TOS, STUDER, DANOBAT, KELLENBERGER, ERWIN JUNKER, SCHAUDT.
Centerless grinders are also intended for grinding rotary surfaces. The clamping of the workpiece on the machine is different. It is supported with support ruler and the workpiece is placed between two discs – abrasive and drifting. The grinding wheel usually spins faster and does the grinding itself. The drive disc is most often made of flexible material (for example rubber) and ensures sufficient pressure.
A special category of grinders are grinders used for grinding of internal rotating surfaces. They works similarly to center grinders. However, the workpiece is just clamped on one side in the chuck or collet so that the hole can be ground from the other side.
