Mechanical two-way reverse scraping cutter capable of being opened and closed automatically

Abstract

The invention relates to the technical field of machining, in particular to a mechanical automatic opening and closing bidirectional reverse scraping cutter which comprises a main cutter rod, a cutter head part, a supporting bearing, a cutter transmission limiting part, a protection device part and a cutter handle limiting transmission part. The tool bit part comprises a tool holder, a blade, a rotary transmission pin, a blade locking screw, a tool holder fixing screw and a blade limiting screw, the rotary transmission pin is installed in a transmission pin hole in the upper portion of the interior of the main tool bar, the tool holder is connected with the rotary transmission pin through the tool holder fixing screw, and the blade is connected with the tool holder through the blade locking screw; according to the tool bit, the tedious work of mounting and dismounting the tool bit during machining of front and back bidirectional reverse countersinking surfaces or reverse countersinks is solved, a large amount of auxiliary time is saved, the machining efficiency is greatly improved, automation of a reverse countersinking tool is achieved, the operation risk caused by tool replacement is reduced, meanwhile, machining faults are avoided through a protection device, and the machining cost is reduced. The workpiece, the cutter and the machine tool are protected, and the machining stability is improved.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a mechanical automatic switch bidirectional reverse scraping tool. Background technique [0002] At present, for the two-way machining that requires the reverse side facing or the reverse side counterbore, most of them are processed by two or more eccentric T-shaped milling cutters, or the one-way reverse side facing or reverse side countersinking is processed by a traditional reverse scraper. After that, a station is added to process the remaining countersinking or countersinking of the workpiece for secondary clamping. [0003] The existing two-way reverse scraper has the following defects in use: [0004] 1. The processing efficiency is low, the tool must be clamped and disassembled every time a hole is processed, and the auxiliary work time is too long; [0005] 2. The process is cumbersome, increase the station, turn the workpiece, and increase the fixture fo...

AI Technical Summary

Problems solved by technology

[0004] 1. The processing efficiency is low, and the tool needs to be clamped and disassembled once for each hole processed, and the auxiliary working time is too long;

[0005] 2. The process is cumbersome, adding stations, turning over the workpiece, and adding fixtures for secondary clamping processing;

[0006] 3. Dangerous operation, some workpieces are relatively high, and the clamping and dismounting of the cutter head needs to be operated by tower crane or driving, which has the risk of high-altitude operation; some processing locations are in a relatively small space, and it is not easy to replace the tool

[0007] 4. The processing failure rate is high. The traditional anti-scraper uses inertial centrifugal force or internal cooling water pressure to open and close the anti-scraper. The structure is unreliable and the opening and closing are unstable. It is easy to cause damage to the workpiece or tool during processing, and may damage the spindle of the machine tool in severe cases.

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