Name of a product | Inventory number | Producer | YOM | Parameters | ||
---|---|---|---|---|---|---|
T-1254N-4S |
231067 | TOYO | 2009 | Max. diameter of workpiece: 430 mm Max. diameter of grinded hole: 250 mm Max. depth of grinding: mm Travel Z-axis: 730 mm Travel X-axis: 100 mm Main motor power: 5,5 kW |
||
BUA 25/630 |
201372 | TOS Hostivař | 1988 | Max. diameter of grinding: 280 mm Max. length of grinding: 630 mm Max. weight of workpiece: 60 kg Device for internal grinding: Machine weight: 3000 kg |
||
Kellenberger 1500 R |
192096 | Kellenberger | Max. diameter of grinding: 250 mm Max. length of grinding: 1500 mm Max. weight of workpiece: kg Device for internal grinding: NO Max. height of grinding: 125 mm Table dimensions: 2060 x 140 mm |
|||
BPH 320 A |
241105 | TOS Hostivař | Max. length of grinding: 1000 mm Max. width of grinding: 320 mm Max. workpiece height: 350 mm Spindle bearing grinders: Horizontální Main motor power: 4 kW Total input: 6,8 kVA |
|||
GU 32x60S |
241212 | PALMARY | 2016 | Max. diameter of grinding: 300 mm Max. length of grinding: 600 mm Max. weight of workpiece: 150 kg Device for internal grinding: YES Grinding spindle speed: 10 - 300 /min Main motor power: 3,7 kW |
||
BUB 32/1500 |
231892 | TOS Hostivař | 1987 | Max. diameter of grinding: 320 mm Max. length of grinding: 1500 mm Max. weight of workpiece: 350 kg Device for internal grinding: NO Total input: 16 kVA Machine dimensions l x w x h: 4190 x 1976 x 1668 mm |
||
EG - 24 CNC |
211186 | EQUIPTOP HITECH CORP. | 2011 | Control system Fanuc: 0i - TC Max. diameter of grinding: 190 mm Max. length of grinding: 400 mm Max. weight of workpiece: 80 kg Device for internal grinding: YES Machine dimensions l x w x h: 2500 x 1900 x 1800 mm |
||
BUB E 50/2000 CNC |
201953 | Fermat | 2022 | Control system Siemens: Sinumerik 840D Sl Max. diameter of grinding: 500 mm Max. length of grinding: 2000 mm Max. weight of workpiece: 500 kg Device for internal grinding: YES Main motor power: 11 kW |
||
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 |
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.
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:
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.