TiC-based steel bonded hard alloy fine external thread milling device and numerical control milling method thereof

Abstract

The invention relates to the technical field of precise machining of a TiC -based steel bonded hard alloy, and in particular relates to a TiC-based steel bonded hard alloy fine external thread millingdevice and a numerical control milling method thereof. The milling device comprises a box body with an opening at the upper end, the box body is filled with cooling liquid, a fixing base is arrangedin the bottom surface of the box body, a spring chuck is arranged at the upper end of the fixing base, and the spring chuck is used for fixing a part to be milled; Under the fixed state of the part, the height of the upper end part of the part is lower than the height of the side wall of the box body, the side of the part is suspended with a milling cutter, the milling cutter adopts a polycrystalline diamond coating, the main cutting edge part of the milling cutter adopts a two-edge mode, and the two edges are arranged in a coplanar manner.

Description

technical field [0001] The invention relates to the technical field of TiC-based steel-bonded hard alloy precision machining, in particular to a TiC-based steel-bonded hard alloy fine-tooth external thread milling device and a numerically controlled milling method thereof. Background technique [0002] TiC-based steel-bonded cemented carbide has the high toughness, high wear resistance and high compressive strength of cemented carbide. After softening treatment (annealing), it has the machinability, forgeability and weldability of steel, which makes up for the hardness of cemented carbide. It is difficult to deform and process, so it is widely used in the fields of cutting tools, abrasive tools and aerospace. However, the material also has its own defects. After strengthening treatment (quenching and tempering), the Brinell hardness (HRC) of the material reaches above 67, which is very hard and difficult to cut. [0003] At present, the research on the conventional cutting ...

AI Technical Summary

Problems solved by technology

[0004] The main reason for this bottleneck problem is that the external thread structure cannot be processed by the conventional process route for rough and fine processing, and can only be survived by the finishing process after intensive treatment. The existing process is single-wire grinding wheel profile grinding, but Due to the high hardness of the TiC-based steel-bonded cemented carbide material at this time, the abrasive wear of the grinding wheel is serious, causing the contour distortion of the grinding wheel, and the surface quality declines rapidly. Fine dressing, and the dressing time accounts for about half of the entire grinding processing time, and the processing efficiency is very low

[0005] Through the patent search, there is no relevant patent for the thread milling method of TiC-based steel-bonded carbide material parts after strengthening treatment

Images