A tic-based steel-bonded cemented carbide fine-tooth external thread milling device

Abstract

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, which includes a box with an opening on the upper end, and the box is filled with cooling liquid. A fixing seat is installed in the bottom surface of the box body, and a spring chuck is installed on the upper end of the fixing seat. The spring chuck is used to fix the parts to be milled. When the parts are fixed, the height of the upper end of the parts is lower than that of the box body. The height of the side wall, a milling cutter is hung on the side of the part, the milling cutter is coated with polycrystalline diamond, the main cutting edge of the milling cutter is in the form of two edges, and the two edges are coplanar.

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. 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 high toughness 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 process of TiC-based steel-bonded carbide mate...

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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

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