Device for manufacturing delta type hard alloy micro milling cutter

Abstract

The invention provides a device for manufacturing a delta type hard alloy micro milling cutter by the combination of ultrasonic auxiliary micro electrolysis. The device for manufacturing the delta type hard alloy micro milling cutter is characterized by comprising an electrolyte tank (1), a tool (an electrode wire) (2), a delta type hard alloy micro milling cutter (3), a cutter clamp (4), a motor (5), a valve (6), a liquid inlet tube (7) of the electrolyte tank (1), a force pump (8), a filter (9), an electrolyte storage box (10), a liquid discharge tube (11) of the electrolyte tank (1), a workbench (12) and an ultrasonic auxiliary device (13). Through discharging and exhausting of electrolysate and hydrogen in clearances of ultrasonic acceleration micro electrolytic machining, and by utilization of good dissolving locality and excellent surface quality controllability of the micro electrolysis, the forming of a cutting edge and cutting faces of the hard alloy micro milling cutter is achieved, and the delta type hard alloy micro milling cutter can be manufactured with high precision, high efficiency and low cost.

Description

technical field [0001] The invention belongs to a milling cutter preparation device, in particular to a device for preparing a Δ-type cemented carbide micro milling cutter. Background technique [0002] At present, there are a variety of processing devices that can produce micro-milling cutters, but there are still many serious problems in many aspects. The existing process devices for preparing micro-milling cutters include: (1) EDM wire electrode grinding device; (2) laser processing device; (3) precision micro-grinding device; (4) focused ion beam sputtering device; ( 5) Electrolytic EDM composite micromachining device. When using the electric discharge wire electrode grinding device to prepare, electric erosion pits will be formed on the cutting edge and cutting surface of the milling cutter tool, thereby forming a surface deterioration layer, microscopic cracks and residual tensile stress; The defect of the electrode grinding device is that the heat conduction during ...

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Problems solved by technology

When using the electric discharge wire electrode grinding device to prepare, electric erosion pits will be formed on the cutting edge and cutting surface of the milling cutter tool, thereby forming a surface deterioration layer, microscopic cracks and residual tensile stress; The defect of the electrode grinding device is that the heat conduction during the laser machining of the micro milling cutter will form a heat affected zone, and there are also microscopic cracks and thermal stress in this area; the use of the precision micro grinding device can meet the requirements of the micro milling cutter preparation to a certain extent. However, due to the influence of the grinding force, the minimum diameter of the tool that can be stably obtained is limited; when the focused ion beam sputtering device is used to prepare the micro milling cutter, the processing efficiency is too low and the cost is too high while ensuring high precision. High disadvantages, it is impossible to realize large-scale preparation of micro-milling cutters; electrolytic EDM has the defects of serious material overcutting and difficult to guarantee machining accuracy

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