Device and method for testing properties of polished cutter

Abstract

The invention discloses a device and a method for testing properties of a polished cutter and belongs to the technical field of cutters. The device comprises a vertical column, a lifting platform, a lifting motor, a carrying block, a working table, a pressing head, a connecting rod, a force measuring sensor, a load adjusting button, a magnetic gauge stand and a dial indicator, wherein the workingtable is mounted on the vertical column; the lifting platform is mounted on the working table and is connected with the lifting motor; the lifting motor is mounted inside the vertical column; the carrying block is positioned on the lifting platform; the force measuring sensor is positioned inside the lifting platform; the dial indicator is connected with the magnetic gauge stand through the connecting rod; the magnetic gauge stand is mounted on the vertical column; the pressing head is mounted on the vertical column through the load adjusting button; the load adjusting button is capable of adjusting the pressure of the pressing head to a cutter; the pressing head is a rectangular pyramid pressing head. By adopting the device and the method, pressure testing is carried out upon a polished cutter and a primary cutter, and by comparing the pressing depth of the polished cutter pressed by the pressing head with the pressing depth of the primary cutter, the property change ratio of the polished cutter self is obtained.

Description

technical field [0001] The invention relates to the technical field of cutting tools, in particular to a performance testing device and method for a sharpened cutting tool. Background technique [0002] In order to gain an advantage in the international competition in the field of aviation and aerospace, materials such as high-strength and high-corrosion-resistant titanium alloys and high-temperature alloys are widely used in aero-engines, and the use of titanium alloys and high-temperature alloys in new aero-engines is increasing. bigger. Titanium alloys and superalloys have excellent performance, but also have extremely high processing difficulty. In particular, with the increasing requirements for machining accuracy, machining efficiency, and surface quality of parts for new aircraft, new challenges are posed to advanced manufacturing technologies. New aerospace materials such as titanium alloys and high-temperature alloys are typical difficult-to-machine materials, whi...

AI Technical Summary

Problems solved by technology

[0005] Through the method of tool grinding, the tool can be used again, and can be repaired multiple times, so the cost of purchasing a new tool is greatly reduced. The inventor found that during the use of the tool after grinding, the performance of the tool is the same as that of the tool. The strength, surface microstructure, hardness, and surface toughness are quite different from the original tool before grinding. Among them, the tool manufacturer usually gives the scope of application of the initial tool, but the performance of the tool after grinding is unknown. Yes, the performance of the tool after grinding will be affected by the grinding process. Different tool grinding companies adopt different grinding processes, that is, the machine tool, grinding wheel, grinding parameters, grinding removal amount, Many parameters such as coolant are different, so the performance of the tool after grinding is also significantly different. The greater the difference between the performance of the tool and the performance of the initial tool, the worse the performance of the tool after grinding. Applicable cutting data will also differ significantly from those of the initial tool

[0006] At present, only manual experience is used to judge the change in the performance of the tool after grinding, and the accuracy of the judgment is low. In the process of using the tool after grinding, the phenomenon of tool breakage, workpiece damage, and machine tool damage often occurs, resulting in unforeseen Therefore, how to quickly and accurately test the service performance of the tool after grinding is a technical problem that needs to be solved urgently

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