Grinding wheel in the grinder with a cutting tool to the workpiece as the cutting method. The method is characterized by:
(1) As the abrasive grinding wheel itself has a high hardness and heat resistance, high hardness of the grinding process can materials such as hardened steel, carbide, etc.
(2) determine the characteristics of the grinding wheel and grinding grinding system for uniform micro-cutting, general ap = 0.001 ~ 0.005mm; grinding speed is high, generally up to v = 30 ~ 50m / s; grinding stiffness; use hydraulic transmission, so can the economy grinding to obtain a high precision (IT6 ~ IT5) and small surface roughness (Ra = 0.8 ~ 0.2¦Ìm). Grinding is one of the main method of finishing parts.
(3) The intense friction, high temperature leaving the grinding zone. This will cause stress and deformation of the workpiece, causing the surface burns. So a lot of grinding coolant must be injected to reduce the grinding temperature. Coolant and lubrication can also play the role of Chip.
(4) grinding a large radial force. This will cause the machine - grinding wheel - workpiece system flexibility concessions, the actual depth of cut is less than the nominal depth of cut. Therefore, the grinding will be done, should not feed the light grinding to remove the error.
(5) after blunt abrasive grinding, grinding force also increased, resulting in abrasive or broken off, re-exposing a sharp edge, this feature is called "self-sharpening." Self-sharpening grinding in a certain period of time so that can be normal, but beyond a certain working time, should be carried out manually trimmed to avoid the grinding force increases caused by vibration, noise and damage to the workpiece surface quality.
The structure and surface grinder grinding motion
Many different types of grinding machines, the main surface grinder, cylindrical grinder, internal grinder, universal cylindrical grinding machine (which can also grind the hole), gear grinding, thread grinding, rail grinding, centerless grinding machine (grinding cylindrical) and tool grinder (grinding tool), etc. Here surface grinding machine and its movement.
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