Grinding wheel grinding machine as a cutting tool with the workpiece cutting method. The method features:
(1) The abrasive grinding wheel itself has a very high heat resistance, hardness, so grinding very hard materials can be processed, such as hardened steel, carbide and so on.
(2) the grinding wheel grinding characteristics of the decision process for the uniform system to trace cutting, the general ap = 0.001 ~ 0.005mm; grinding speed is high, generally up to v = 30 ~ 50m / s; grinding stiffness; with hydraulic drive Therefore, grinding energy and affordable access to high precision (IT6 ~ IT5) small surface roughness (Ra = 0.8 ~ 0.2μm). One of the main parts finishing grinding.
(3) The violent clashes, leaving the grinding marble temperature is very high. This will cause stress and deformation of workpiece, and even cause surface burns. So a lot of grinding coolant must be injected to reduce the grinding temperature. Chip cooling fluid lubrication can also be played.
(4) grinding a large radial force. This will result in machine tools - grinding wheel - workpiece system flexibility concessions, the actual depth of cut less than the nominal depth of cut. Therefore, the grinding will be complete, should not feed the light grinding to remove the error.
(5) after blunt abrasive grinding, grinding force also increased, resulting in grain breakage or loss, re-exposing a sharp edge, this feature is called "self-sharpening." Self-sharpening the grinding of a certain period of time to be normal, but after more than a certain work should be carried out manually trimmed so as not to cause the grinding force increases vibration, noise and damage the workpiece surface quality.
Grinding wheel
Cutting tool grinding wheel, which consists of many small, hard grains bonded porous objects stick together. Abrasive cutting directly responsible for the work, must be sharp and have high hardness, heat resistance, a certain toughness. Commonly used abrasives are aluminum oxide (also known as corundum) silicon carbide two. Class alumina abrasive, high hardness, good toughness, suitable for grinding steel material. Silicon carbide type abrasive hardness higher and more sharp, thermal conductivity, but more brittle for grinding cast iron carbide.
The same grinding wheel, due to their different size, the surface roughness of workpiece processing efficiency is not the same as for the coarse grain coarse, fine abrasive for grinding, abrasive thicker, the smaller the size number.
Bond from the bonding abrasive effect. Common bond, followed by resin bond. Bond different materials, the impact of wheel corrosion resistance, strength, heat resistance, toughness. Electrode wear
The more firmly bonded abrasive, the more difficult to fall off from the grinding wheel to wheel hardness, said that the abrasive surface of grinding wheel hardness refers to the degree of difficulty falling under external force. Easy to fall off as soft, otherwise known as hard. Hardness, hardness and abrasive wheel of two different concepts. Grinding surface is relatively soft, abrasive edge (edges) is not easy to wear, so that time can be longer abrasive used, the optional bonding firm also said that some wheel (hardness grinding wheel). Conversely, low hardness grinding wheel for grinding the workpiece hardness.
Work under conditions of grinding wheel speed, in order to ensure safety, should be checked before installation, should not have cracks and other defects; wheel work to make a smooth, dynamic balance test should be carried out before use.
Wheel of work after a certain time, the surface is countertop plugging the gap, abrasive acute angle will be blunt, the original geometric shape distortion. Must therefore be trimmed in order to restore the correct geometry of the cutting ability. Required grinding wheel dressing diamond pen.
(1) The abrasive grinding wheel itself has a very high heat resistance, hardness, so grinding very hard materials can be processed, such as hardened steel, carbide and so on.
(2) the grinding wheel grinding characteristics of the decision process for the uniform system to trace cutting, the general ap = 0.001 ~ 0.005mm; grinding speed is high, generally up to v = 30 ~ 50m / s; grinding stiffness; with hydraulic drive Therefore, grinding energy and affordable access to high precision (IT6 ~ IT5) small surface roughness (Ra = 0.8 ~ 0.2μm). One of the main parts finishing grinding.
(3) The violent clashes, leaving the grinding marble temperature is very high. This will cause stress and deformation of workpiece, and even cause surface burns. So a lot of grinding coolant must be injected to reduce the grinding temperature. Chip cooling fluid lubrication can also be played.
(4) grinding a large radial force. This will result in machine tools - grinding wheel - workpiece system flexibility concessions, the actual depth of cut less than the nominal depth of cut. Therefore, the grinding will be complete, should not feed the light grinding to remove the error.
(5) after blunt abrasive grinding, grinding force also increased, resulting in grain breakage or loss, re-exposing a sharp edge, this feature is called "self-sharpening." Self-sharpening the grinding of a certain period of time to be normal, but after more than a certain work should be carried out manually trimmed so as not to cause the grinding force increases vibration, noise and damage the workpiece surface quality.
Grinding wheel
Cutting tool grinding wheel, which consists of many small, hard grains bonded porous objects stick together. Abrasive cutting directly responsible for the work, must be sharp and have high hardness, heat resistance, a certain toughness. Commonly used abrasives are aluminum oxide (also known as corundum) silicon carbide two. Class alumina abrasive, high hardness, good toughness, suitable for grinding steel material. Silicon carbide type abrasive hardness higher and more sharp, thermal conductivity, but more brittle for grinding cast iron carbide.
The same grinding wheel, due to their different size, the surface roughness of workpiece processing efficiency is not the same as for the coarse grain coarse, fine abrasive for grinding, abrasive thicker, the smaller the size number.
Bond from the bonding abrasive effect. Common bond, followed by resin bond. Bond different materials, the impact of wheel corrosion resistance, strength, heat resistance, toughness. Electrode wear
The more firmly bonded abrasive, the more difficult to fall off from the grinding wheel to wheel hardness, said that the abrasive surface of grinding wheel hardness refers to the degree of difficulty falling under external force. Easy to fall off as soft, otherwise known as hard. Hardness, hardness and abrasive wheel of two different concepts. Grinding surface is relatively soft, abrasive edge (edges) is not easy to wear, so that time can be longer abrasive used, the optional bonding firm also said that some wheel (hardness grinding wheel). Conversely, low hardness grinding wheel for grinding the workpiece hardness.
Work under conditions of grinding wheel speed, in order to ensure safety, should be checked before installation, should not have cracks and other defects; wheel work to make a smooth, dynamic balance test should be carried out before use.
Wheel of work after a certain time, the surface is countertop plugging the gap, abrasive acute angle will be blunt, the original geometric shape distortion. Must therefore be trimmed in order to restore the correct geometry of the cutting ability. Required grinding wheel dressing diamond pen.