Carbide saw blades should be ground like this

Grinding knowledge of alloy saw blades

1. The quality of gear grinding with coolant depends on the grinding fluid. A large amount of tungsten and emery wheel powder are produced during grinding. If the surface of the tool is not washed and the pores of the grinding wheel are not washed in time, the surface grinding tool will not be able to grind the smoothness, and the alloy will burn if there is not enough cooling.

2. The influence of gear grinding mechanism on gear grinding. The quality of the gear grinding of alloy circular saw blades lies in the model structure and assembly. At present, there are about two models on the market: one is the German float ink type. This type adopts vertical grinding pin. The advantages are all hydraulic stepless motion. All feed systems use v-shaped guide rails and ball screws to work. Grinding heads and arms adopt slow feed in, retreat and fast retreat, and chuck cylinder adjustment. Flexible and reliable center, accurate positioning of tooth extraction, firm positioning center of saw head, automatic positioning center, arbitrary angle adjustment, reasonable cooling and washing, realization of man-machine interface, high grinding precision, reasonable design of pure grinding machine, two types are the current horizontal type, such as Taiwan Japanese model, mechanical transmission, mechanical transmission has teeth and mechanical positioning, saw tooth positioning center is firm and automatic positioning center, arbitrary angle adjustment, cooling and washing is reasonable, realizing high grinding precision of human mechanism, low grinding precision, and grinding precision

3. Welding factors. The large deviation of the alloy alignment during welding affects the grinding accuracy, resulting in high pressure on the grinding head and low back angle pressure, which also produces the above factors. Poor welding angles and unavoidable factors will have an unavoidable impact on the grinding wheel and other factors in the grinding process.

4. The influence of the quality of the grinding wheel and the width of the grain size. When choosing a grinding wheel to run in gold foil, pay attention to the particle size of the grinding wheel. Coarse-grained grinding will produce grinding wheel marks. The grinding wheel is of fine grain size, which is easy to block, less grinding and easy to burn. The diameter, width and thickness of the grinding wheel are determined according to the alloy length, width or different tooth profile and alloy surface. Different tooth profiles can be grinded at will. This is different from the specifications of the back angle or front angle grinding wheel. It is necessary to select the appropriate specifications of the grinding wheel in a targeted manner.

5. The feed speed of the grinding head. The grinding quality of alloy saw blades depends entirely on the feed speed of the grinding head. The feed speed of the alloy circular saw blade should generally be within 20 teeth per minute. If the feed speed exceeds 20 teeth per minute, it will cause severe knife edge or alloy burns. The convex and concave surfaces of the grinding wheel will affect the grinding accuracy and waste the grinding wheel.

6. The feed rate of the grinding head and the selection of the size of the grinding wheel are extremely important for the feed rate. Generally, it is recommended to choose 180# to 240# for grinding wheel, and 240# to 280# for the most quantity, not 280# to 320#, otherwise, the feed speed should be adjusted.

7. Grinding the heart. All saw blades use the bottom grinding core, without the cutter head, the plane grinding core can not be taken out, the back angle and the front angle processing core can not grind the saw blade, and the saw blade core cannot be ignored in the three processes of grinding.

8. The tooth extraction mechanism cannot be ignored. Regardless of the structure of any gear grinding machine, the accuracy of the gear extraction coordinates is designed to the quality of the knife. When the machine is adjusted, the extraction needle is pressed at a reasonable position on the tooth surface. Flexible and reliable.

9. Clipping mechanism: The clamping mechanism is firm, stable and reliable. It is the main part of the sharpening quality. During any sharpening, the clamping mechanism should not be loose at all, otherwise the grinding deviation will be seriously out of control.

10. Grinding stroke. Regardless of any part of the saw blade, the grinding stroke of the grinding head is very important. Generally, the grinding wheel is required to exceed the workpiece by 1 mm or exit by 1 mm, otherwise the tooth surface will produce a two-sided blade.

11. Program selection: Generally, there are three different program options for grinding knife, coarse, fine, and grinding, depending on the product requirements, it is recommended to use the fine grinding program when grinding the rake angle at the end.

e matrix has large deformation, inconsistent thickness, and large inner hole tolerance. When there is a problem with the above-mentioned congenital defects of the substrate, no matter what kind of molding equipment is used, there will be grinding errors. The large deformation of the matrix causes the deviation of the two side angles; the inconsistency of the thickness of the substrate will cause the deviation of the rear angle and the front angle of the blade. If the accumulated tolerance is too large, it will seriously affect the quality and accuracy of the saw blade.