Oil groove milling cutter of hard alloy cold-working mould pressing blank

A cemented carbide and molding technology, which is used in the field of machining tools, can solve the problems of inability to guarantee the quality of the machined surface, and achieve the effects of low cost, easy tool production and reduced cutting resistance.

Inactive Publication Date: 2010-02-03
FUJIAN JINXIN TUNGSTEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of cemented carbide cold-work molded blank oil groove milling cutter, when using this milling cutter to process the cemented carbide cold-work molded blank oil groove, the integrity of the edge of the oil groove and the roughness of the processed surface can be kept ≤ Ra0.8, In order to solve the problem that the existing milling cutter can not guarantee the surface quality of the cemented carbide blank

Method used

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  • Oil groove milling cutter of hard alloy cold-working mould pressing blank
  • Oil groove milling cutter of hard alloy cold-working mould pressing blank
  • Oil groove milling cutter of hard alloy cold-working mould pressing blank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Figure 1 to Figure 5 The cemented carbide cold-work molded billet oil groove milling cutter shown in the present invention includes a steel matrix 2 with 8 serrations and 8 PCD blades 1, the back of the steel matrix serrations is designed as an inclined flat bottom, and the PCD blades 1 are welded on the steel matrix serrations; The dimensional parameters of steel substrate 2 and PCD blade 1 are as follows: main parameters b: Φ40mm, f: Φ30.2mm, h: 37°, i: Φ42.2mm, j: 5.6mm, k: 12°, r : 89°, y: 2°; other parameters a: 18mm~30mm, c: 2mm~10mm, d: 2mm~10mm, e: 6mm, g: Φ8mm~30mm, m: 3mm~20mm, n: 0.5mm~ 10mm, p: (0.2~4)X(15°~60°), s: 3mm.

[0044] Install the milling cutter on the universal tool grinder, set the cutter speed to 3600r / min; clamp the hard alloy cold pier mold blank on the indexing chuck, and use the indexing head to index the position of the oil groove, and process YG15 and YG20 respectively Cold pier molded blank oil grooves in two carbide grades.

[0045]...

Embodiment 2

[0048] Change the geometric angle of the PCD blade 1 to h: 35°, k: 10°, r: 85°, y: 3°, and the other conditions are the same as in the first embodiment.

[0049] Install the milling cutter on the universal tool grinder, set the cutter speed to 3600r / min; clamp the cold pier molded blank on the indexing chuck, and use the indexing head to index the position of the oil groove. Process YG15 and YG20 cold pier molded blank oil grooves.

[0050]During processing, the workpiece is pushed steadily at a slow speed by manual operation. The processing size (width×depth) is 3.2mm×2.5mm four oil grooves, and each oil groove is processed once.

[0051] During the processing, it was found that the milling cutter vibrated slightly. After the processing was completed, the edge of the oil groove had a very slight chipping. The surface roughness was rougher than that of Example 1, but it still met the processing requirements of the oil groove of the cold pier molded blank.

Embodiment 3

[0053] Change the radial dimension of the steel matrix 2 to b: Φ44.0mm, f: Φ34.0mm, i: Φ46.0mm, and other conditions are the same as in the first embodiment.

[0054] Install the milling cutter on the universal tool grinder, set the cutter speed to 3600r / min; clamp the cold pier mold blank on the indexing chuck, and use the indexing head to index the position of the oil groove, and process two grades of YG15 and YG20 respectively Cold pier molded blank oil tank.

[0055] During processing, the workpiece is pushed steadily by manual operation, and pushed at a slow speed at a constant speed. The processing size (width × depth) is 3.2mm×2.5mm four oil grooves, and each oil groove is processed at one time.

[0056] Inspection after processing shows that the processed surface has slight knife jumping phenomenon, slightly rough (surface roughness is Ra1.6), and the edge of the oil groove is slightly chipped, which still meets the processing requirements of the cold pier molded blank...

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Abstract

The invention discloses an oil groove milling cutter of a hard alloy cold-working mould pressing blank, which comprises a steel basal body (2) and a PCD blade (1), wherein the steel basal body (2) isprovided with 6-12 saw teeth, the number of PCD blade (1) is the same with the number of saw teeth, the back of the saw teeth of the steel basal body (2) is designed into an inclined flat bottom shape, and the PCD blade (1) is welded on the saw teeth of the steel basal body (2). Aiming at the difficult problems of low integrated intensity, hard grains and easy machined surface collapse in the processing process of a hard alloy pressing blank, the invention concretely limits multiple items of geometric parameters of the milling cutter, particularly a geometric angle. When the milling cutter isused for processing an oil groove of the hard alloy cold-working mould pressing blank, the edge of the oil groove can be kept integrated, and the machined surface roughness is kept to be not more thanRa 0.8, solving the difficult problem that the quality of the machined surface can not be ensured when the existing milling cutter is used for processing the hard alloy pressing blank.

Description

1. Technical field [0001] The invention relates to a machining cutter, in particular to a milling cutter for processing a cemented carbide cold working die, especially a cold pier die pressing blank oil groove. 2. Background technology [0002] The tungsten carbide cold pier mold compact is made of cemented carbide composite powder pressed by a mold. The overall strength of the blank is low and the particles are hard. During the processing of the compact oil tank, the processing surface is prone to collapse, and the hard powder is easy to cause The wear of the tool, the control of the cutting force of the cutting tool is extremely strict. If the cutting force is too small, the purpose of processing cannot be achieved, and if the cutting force is too large, the processing surface will be seriously damaged and the processing will fail. Therefore, very strict requirements are put forward for the cutting tool. Not only is the material good, but it also puts forward specific requ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/28B23C5/02
Inventor 肖九生丁华堂
Owner FUJIAN JINXIN TUNGSTEN
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