A Calculation Method of Cutting Parameter Range of Grinding Tool

Abstract

The invention relates to a calculation method for the cutting parameter range of a grinding tool, which belongs to the technical field of cutting tools. The method includes: step 1, selecting an initial tool, using the same pressure to use the same pressure to carry out an indentation test on the tool after grinding and the initial tool as the tool to be tested; step 2, measuring the diagonal length of the indentation area of ​​the tool after grinding a1, the crack length b1 generated on the extension of the diagonal line, and the diagonal length a2 of the initial tool indentation area measured, and the crack length b2 generated on the extension line of the diagonal line; step 3, calculate the length of the diagonal line Change ratio V1, V1=a1 / a2, calculate the crack length change ratio V2, V2=b1 / b2, obtain the processing performance change ratio V of the tool after grinding, V=max{V1, V2}; step 4, according to the grinding The change ratio V of the machining performance of the tool after grinding, and the range M of the cutting parameters of the tool after calculation 后 ,M 后 = M 初 ×V / n, M 初 is the range of cutting parameters of the initial tool, and n is the safety factor of the initial tool breaking.

Description

technical field [0001] The invention relates to the technical field of cutting tools, in particular to a calculation method for the range of cutting parameters of a grinding tool. Background technique [0002] The materials of aerospace engine components are mostly difficult-to-machine materials such as titanium alloys and high-temperature alloys, which have very high requirements for cutting tools, which require excellent processing performance, high stable machinability and long service life. [0003] The materials and machining accuracy of the cutting tools used to process aerospace components are significantly higher than ordinary cutting tools. Therefore, the cost of cutting tools is also much higher than that of ordinary cutting tools. In order to improve the utilization rate of cutting tools and reduce costs, the worn cutting tools are usually Regrinding is performed, resulting in a new cutting edge, allowing the tool to be reused. [0004] When the tool leaves the f...

AI Technical Summary

Problems solved by technology

[0004] When the tool leaves the factory, the manufacturer will give the scope of application of the tool, that is, the cutting parameter range of the tool, but for the tool after grinding, its processing performance will often be different from that of the initial tool, because in the grinding process Among them, the grinding processes adopted by different tool grinding enterprises, such as machine tools, grinding wheels, grinding parameters, removal amount, coolant used in the grinding process, etc., will be different, and the different grinding processes will make the The processing performance of the tool is different, so that the range of cutting parameters applicable to the tool after grinding is different

[0005] However, for the tool after grinding, it is often impossible to know the change of the processing performance of the tool after grinding from the appearance. The phenomenon of excessive cutting force and torque occurs, resulting in tool breakage, workpiece damage, machine tool damage, etc., which will cause serious economic damage. Therefore, how to quickly and accurately calculate the cutting parameter range of the tool after grinding is very important

Images