Hard alloy milling cutter for counter bore processing
A cemented carbide and milling cutter technology, which is applied in the direction of milling cutters, metal processing equipment, manufacturing tools, etc., can solve the problems of poor chip removal, short service life, poor stability, etc., and achieve smooth chip removal, long service life, The effect of strong stability
Inactive Publication Date: 2013-05-01
奥斯机(上海)精密工具有限公司
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Problems solved by technology
[0003] The present invention provides a high-speed machining and high-efficiency cemented carbide milling cutter for counterbore machining, which solves the above-mentioned problems of short service life, poor chip removal, poor stability, etc.
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Embodiment 1
[0015] In this embodiment, the arc radius of the arc-shaped slot 6 is R=5mm, the area of the front edge 41 of the spiral bottom edge 4 is 1.5 times the area of the back edge 42, and the diameter of the blade 1 is Ф≤12mm, and the bottom Flatness F≤0.02mm.
Embodiment 2
[0017] In the present invention, the arc radius of the arc-shaped slot 6 is R=6mm, the area of the front edge 41 of the spiral bottom edge 4 is twice the area of the rear edge 42, the blade diameter Ф>12mm, and the bottom surface is flat F≤0.03mm.
[0018] It can be seen from the above embodiments and drawings that the present invention has fast processing speed and high efficiency, the left and right torque is reduced by 45% compared with the existing milling cutter, and the service life is long; the chip removal is smooth, and the bottom surface of the processed part has better flatness. It can process flat counterbore and inclined counterbore at the same time. The processing range is wide and the accuracy is high. After the feed rate is greater than 0.12mm / rev, the processing diameter is small and the stability is strong.
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The invention belongs to the technical field of counter bore processing cutters, and relates to a milling cutter for base counter bore processing, in particular to a hard alloy milling cutter for counter bore processing. The hard alloy milling cutter comprises a cutter blade consisting of two spiral blades and two chip discharge grooves, and a cutter handle connected with the cutter blade, and is characterized in that the cutter handle is in a T-shaped structure; an oil feed slotted hole for stably feeding oil to the milling cutter is formed at the top of the cutter handle; areas of bottom blades of the spiral blades of the cutter blade are slightly greater than bottom plane areas of the chip discharge grooves; arc notches of the chip discharge grooves are formed at a connection part between the bottom blades of the two spiral blades; and the arc radius of each arc notch, namely R, is equal to 5-6mm. The hard alloy milling cutter is high in processing speed and high in efficiency; a left-right torque is reduced by 45% compared with that of the existing milling cutter; the service life is long; chip discharge is smooth; the flatness of the bottom surface of a processed component is better; the hard alloy milling cutter can process a plane counter bore and an inclined counter bore simultaneously, and is wide in processing scope, higher in precision, and high in stability; and the extensive magnitude of the diameter of the processed bore is small.
Description
Technical field [0001] The invention relates to the technical field of counterbore processing tools, in particular to a base counterbore processing milling cutter, in particular to a cemented carbide milling cutter for counterbore processing. Background technique [0002] This kind of processing is often encountered in component processing: because bolts are used, counterbores in the base are required. Existing tools are often slow in processing countersinks with low efficiency and large left and right torques, which greatly shortens the tool life; at the same time, it is often encountered that the chip evacuation is not smooth and the flatness of the bottom surface of the processed parts cannot meet the requirements. And other problems, and it is impossible to process flat and inclined counterbores with one tool at the same time, the tool must be changed on the way, and the accuracy is not high, and once the feed rate is greater than 0.12mm / rev, the aperture of the general milli...
Claims
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IPC IPC(8): B23C5/10
Inventor 袁衡李钦
Owner 奥斯机(上海)精密工具有限公司