Several factors that need to be paid attention to when grinding gold circular 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 the alloy circular saw blade depends on the model structure and assembly. At present, there are about two types of models in the market: the first type is the German floater type. This type adopts vertical grinding pin, all advantages adopt hydraulic stepless motion, all feed system adopts V-shaped guide rail and ball screw work, grinding head or boom adopts slow advance, retreat and fast retreat, and the clamping oil cylinder is adjusted. Flexible and reliable support, accurate positioning of tooth extraction, firm and automatic centering of saw blade positioning, arbitrary angle adjustment, reasonable cooling and washing, realization of man-machine interface, high precision of grinding, reasonable design of pure grinding machine; the second type is the current horizontal type , Such as Taiwan and Japan models, the mechanical transmission has gears and mechanical clearances. The sliding precision of the dovetail is poor, the clamping piece has low stability, the adjustment of the support piece center is difficult, the gear extraction mechanism or the reliability is poor, and the two sides of the plane and the left and right rear angles are not in the same center. Cutting, resulting in large deviations, difficult to control the angle, and large mechanical wear to ensure accuracy.

3. Welding factors. The large deviation of alloy alignment during welding affects the grinding accuracy, resulting in a large pressure on the grinding head and a small pressure on the other. The back angle also produces the above factors. The poor welding angle and human unavoidable factors all affect the grinding wheel during grinding. Have an unavoidable impact.

4. Influence of grinding wheel quality and grain size width. When choosing a grinding wheel to grind alloy sheets, pay attention to the particle size of the grinding wheel. If the particle size is too coarse, the grinding wheel will produce traces. The diameter of the grinding wheel and the width and thickness of the grinding wheel are determined according to the length of the alloy or the different tooth profile and the various surface conditions of the alloy. It is not the same as the specification of a back angle or a front angle. The grinding wheel can arbitrarily grind different tooth shapes. Specification grinding wheel.

5. The feed speed of the grinding head. The grinding quality of alloy saw blades is completely determined by the feed speed of the grinding head. Generally, the feed speed of alloy saw blades should not exceed this value at 0.5 to 6 mm/sec. That is, each minute should be within 20 teeth per minute, which is more than per minute. If the 20-tooth feed speed is too high, it will cause serious edge or burnt alloys, and the convex and concave surfaces of the grinding wheel will affect the accuracy of the grinding and waste the grinding wheel.

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

7. Grinding the heart. The grinding of all saw blades should be centered on the base body, not the edge of the knife. The plane grinding center cannot be taken out, and the rear and front corners cannot be ground with a machining center. A saw blade can be ground for three processes. Can not be ignored. When grinding the side angle, observe the alloy thickness carefully. The grinding core changes with different thicknesses. Regardless of the thickness of the alloy, the center line of the grinding wheel should be kept in a straight line with the welding position when grinding the surface, otherwise the angle difference will affect the cutting.

8. The tooth extraction mechanism cannot be ignored. Regardless of the structure of any gear grinding machine, the accuracy of the 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 quality of the sharpening. The clamping mechanism must not be loose at all during sharpening, 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 in the final grinding of the rake angle.

12. Large deformation of the substrate, inconsistent thickness and large tolerance of the inner hole. When there is a problem with the above-mentioned congenital defects of the substrate, no matter what type of equipment is used, there will be grinding errors. The large deformation of the substrate will cause deviations on the two side angles; the inconsistent thickness of the substrate will cause deviations on both the relief angle and the rake angle. If the accumulated tolerance is too large, the quality and accuracy of the saw blade will be seriously affected.