when the matrix deformation is large, the thickness is not consistent, and the tolerance of the inner hole is large, there is grinding error in the above matrix defects. The two lateral deformation of the base angle deviation matrix of large diameter hole, jump deviation matrix; inconsistent thickness of angle and rake angle deviation, such as the existence of the cumulative margin is too large, the blade quality and precision is seriously affected.2. effect of grinding machine for grinding tooth structure, carbide circular saw blade grinding machine structure and assembly quality lies in the market at present, about two kinds of models: one is the German Fuermo type, this machine adopts vertical grinding, using all the advantages of the hydraulic stepless motor, all feeding system adopts V type guide rail and ball screw. The feed grinding head or arm gently retracting backward, clamping cylinder adjustment center, a piece of flexible and reliable, accurate positioning of the tooth, saw positioning center firmly automatic centering, arbitrary angle adjustment, cooling and washing is reasonable, human machine interface, high grinding precision, reasonable design of pure two kinds of the horizontal grinder; such as Taiwan, Japan model, mechanical transmission gear and mechanical clearance dovetail slide precision, stable performance and low clip, support center adjustment difficult, a tooth pulling mechanism or reliability Poor, the two sides of the plane and the left and right rear angles are not in a center grinding, which produces large deviation, difficult angle control and difficult to ensure the mechanical wear.

3.The factors of the welding, welding alloy of moderate deviation, affecting the precision grinding, grinding pressure caused by side, side compression, angle also produces the factors mentioned above, the welding angle difference, human factors are inevitable, unavoidable influence on factors such as grinding wheel.

4.the influence of the quality and width of the grinding wheel. When selecting the grinding wheel, the attention should be paid to the size of the grinding wheel and the grinding wheel trace. The diameter of the grinding wheel and the width of the grinding wheel are determined by the length, width, width, or the shape of the alloy, and the condition of the alloy. It is not a rear wheel or a front wheel. The grinding wheel can be arbitrarily grinded with different gear shapes. It is necessary to select the suitable grinding wheel for specific purposes.

5. grinding head feed speed, hard alloy grinding is completely decided on grinding feed rate, feed rate of general CARBIDECIRCULAR saw 6 mm / s not speeding this value, namely every minute should be in 20 teeth, 20 teeth per minute than feed rate is too large, will cause serious knife or burning alloy wheel produced convex tumor the impact of concave tooth grinding precision, waste grinding wheel.

6. The grinding head feed rate and the size of the grinding wheel are very important for the feed quantity. The recommended grinding wheel is 180# to 240#, and the maximum value is 240# to 280#. The 280# to 320# is not selected, otherwise the feed speed should be adjusted.

7. grinding center, all cemented carbide saw blades are grinded with the matrix as the center instead of the center of the knife edge, and the surface grinding center can not be taken out. The sawing center can't be sharpened by the machining center at the back corner and the front corner. The center of the saw blade can not be ignored in the three processes. When grinding the side angle, the thickness of the alloy will be carefully observed, and the grinding center will also change. No matter the thickness of the alloy, when grinding the side, the centerline of the grinding wheel should be kept in a straight line with the welding position, otherwise the angle difference will affect the cutting.

8. hard alloy saw tooth mechanism can not be ignored, no matter how any grinding machine structure and tooth coordinate accuracy, system design involves grinding quality, tooth needle pressure on the tooth surface reasonable position in the unit, but also do not move and key, back teeth, tooth claw should be flexible and reliable.

9. The clamping mechanism: the clamping mechanism is stable and reliable, which is the main part of the sharpening quality. Any gripping mechanism can not be loosened at any time, and the deviation of the side grinding gear is seriously out of control.

10. grinding stroke, regardless of any part of the grinding saw, grinding head travel is very important. Generally speaking, it is suitable for grinding wheels to exceed 1 millimeters or 1 millimeters, otherwise it will affect other teeth.

11. program selection: sharpening the general equipment has coarse, fine and lapping three different procedures, depending on the requirements of the product selection, and finally use the finishing grinding process when milling the front corner.

12.the grinding fluid of cooling fluid depends on the grinding fluid. When grinding, a large amount of tungsten cobalt and diamond powder are produced. The surface of the tool is not washed in time and the pores of the grinding wheel are cleaned, resulting in the surface grinding tools can not be polished, and the alloy will be burned if there is not enough cooling.