Surface grinder grinding technology of these points we need to master!
The surface grinder has reasonable structure, good rigidity, beautiful appearance and convenient operation. The transverse movement of the worktable can realize the mechanical transmission and manual transmission, and the longitudinal movement can realize the mechanical transmission and manual transmission. Steel ball guide is used for transmission and synchronous belt is used for grinding.
On the basis of surface grinding machine, the manual operation is changed into electric control, which can significantly improve the work efficiency and reduce the labor intensity. Especially when grinding large quantities of workpieces, it can significantly improve the surface finish of parts than manual grinding mode. Permanent magnetic chuck or electromagnetic suction disc can be equipped according to the needs of users.
What are the characteristics of the pin grinding method of the surface grinder?
1. Due to the high hardness and heat resistance of grinding wheel grains, grinding can process materials with high hardness, such as hardened steel and cemented carbide.
2. The characteristics of grinding wheel and grinder determine that the grinding process system can make uniform micro cutting, generally AP = 0.001-0.005mm; the grinding speed is very high, generally up to v = 30-50m / S; the grinder has good rigidity; hydraulic transmission is adopted, so grinding can obtain high machining accuracy it6-it5 and small surface roughness Ra = 0.8-0.2 μ M. Grinding is one of the main methods of finishing parts.
3. The temperature in the grinding zone is very high due to severe friction. This will cause stress and deformation of the workpiece, and even burn the surface of the workpiece. Therefore, a large amount of coolant must be injected into the grinding process to reduce the grinding temperature. The coolant can also play the role of chip removal and lubrication.
4. The radial force during grinding is very large. This will cause the elastic yielding of the machine tool grinding wheel workpiece system, making the actual cutting depth less than the nominal cutting depth. Therefore, when the grinding is about to be finished, the grinding should be carried out without feed to eliminate the error.
5. When the abrasive grains are blunt, the grinding force will also increase, causing the abrasive grains to break or fall off and re expose the sharp edge, which is called "self sharpening". Self sharpening makes grinding work normally in a certain period of time. However, after a certain working time is exceeded, manual trimming should be carried out to avoid vibration, noise and surface quality damage caused by grinding force increase.
On 2018-08-08 11:45:46
