The cutting tool is a grinding wheel , which consists of many small and hard abrasive particles and adhesive bonding agent made of the porous body. Abrasive cutting work directly responsible, must be sharp and have high hardness, patience and a certain toughness. Commonly known as corundum alumina abrasive) and silicon carbide two kinds. Alumina-based abrasive, high hardness, good toughness, suitable for grinding steel material. Silicon carbide abrasive hardness is higher and more sharp, good thermal conductivity, but more brittle, suitable for grinding cast iron and carbide. The same abrasive wheel, due to their different thickness, the surface roughness after the workpiece and the machining efficiency is not the same, for the coarse grains coarse, abrasive for grinding small, the more coarse abrasives, the smaller the grain size number. From the bonded abrasive binders role. Commonly used ceramic binder, followed by resin binding agent. Binding agents are selected from different materials, the impact grinding corrosion resistance, strength, heat resistance and toughness.
Centerless grinder grinding principle: centerless grinding method by the grinding wheel, regulating wheel and the workpiece holder three parts, which bear the grinding wheel grinding wheel to adjust and control the rotation speed of the workpiece feed, the workpiece holder is in grinding support the workpiece, although there are several kinds of these three parts with the method, but the basic principle unchanged. MG1020 centerless grinder because of high precision, high efficiency, high stability, the machine is a very money machine, but due to high prices and few people ask after, a new 1020 to more than 130,000 yuan but probably just an old 5-60000 yuan, if you are smart enough, here I will teach you to an old machine like new, the same accuracy as the Stability: First, connect the various components of the scale at the good, and then open a machine subsystems Dresser wheel system 2 system 3 guide wheel system 4 guide wheel trim system 5 hydraulic system 6 lubrication systems, components accessories and bolts classification placed so as not to get confused or lost. Second, check the wheel shaft diameter is 75MM, if little more than five wire, recommended for shaft, making a positive 10 75MM silk with research bush pig iron grinding rod until all contact, do one assembly bore 75 is 2 wire. OD 110 minus 2 wire concentric sets of concentric sleeve to adjust the spindle housing concentric with the machine, but also to ensure the spindle horizontal clearance shall not exceed 0.01MM, can be easily rotated by hand wheel spindle. Third, check the dresser and cylinder disengaged by pulling the trimmer back and forth freely, without severity; hand side to side may not have a gap, not with scraping. Fourth, the same processing and inspection guide pulley wheel shaft and bearing, and then adjust the machine with concentric sets of guide shaft to ensure lateral axis within the gap in 0.002MM may not have axial drive. After driving may not have abnormal noise Fifth, because MG1020 is a hydraulic self-lubricating rails, so the hydraulic system must be completely washable re-regulator "Pressure Size Please refer to the instructions." Lubrication system is to protect the wheel axis, like the human heart is as important as protecting the brain. Six, the lubrication system is to protect the wheel shaft protects the brain like the human heart as especially important. First, the system is installed after washable, second, to connect the machine to see whether the wheel cut off the oil in the protection. Seven, commissioning guide wheel dresser, debugging method with the wheel.