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Molding grinding wheel for grinding small-hole threads of hard and brittle materials

A technology for forming grinding wheels and hard and brittle materials, used in thread cutting tools, metal processing equipment, tangent devices, etc., can solve problems such as large principle errors and inability to apply, and achieve long grinding wheel life, good processing quality, and efficient precision machining Effect

Active Publication Date: 2013-02-27
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using a standard thread truncated grinding wheel for milling of small hole threads will theoretically have a large principle error, so that this process method cannot be applied

Method used

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  • Molding grinding wheel for grinding small-hole threads of hard and brittle materials
  • Molding grinding wheel for grinding small-hole threads of hard and brittle materials
  • Molding grinding wheel for grinding small-hole threads of hard and brittle materials

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Embodiment

[0022] Such as Figure 1 ~ Figure 2 As shown, a threaded grinding wheel for forming and grinding ordinary standard thread M2 small holes includes a disc-shaped forming grinding wheel 1 and a grinding wheel rod 2 . The diameter of grinding wheel rod 2 is less than the bottom hole diameter, gets φ 1mm, and the effective length of grinding wheel rod 2 gets 4mm, and the diameter of knife handle 3 is φ 3mm. The disc shaped grinding wheel 1 is prepared by electroplating diamond abrasives, the disc shaped grinding wheel 1, the grinding wheel rod 2 and the knife handle 3 adopt an integral structure, and the material is hard alloy.

[0023] 1) The diameter of the disc forming grinding wheel 1 is φ1.5mm, which is slightly smaller than the diameter of the bottom hole of the M2 thread φ1.6mm.

[0024] 2) if figure 2 As shown, the included angle of the axial section of the disc-shaped forming grinding wheel 1 is 56°, that is, the amount of modification α=4°.

[0025] 3) The disc-shape...

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Abstract

The invention discloses a molding grinding wheel for grinding small-hole threads of hard and brittle materials and belongs to the technical field of machinery manufacturing. The molding grinding wheel is characterized in that the axial section included angle alpha of the disc-shaped molding grinding wheel is determined by the formula alpha=alpha0 Dalpha, wherein the alpha0 is the thread standard thread angle, the Dalpha is the grinding wheel axial section profiling quantity Dalpha corresponding to the minimum thread profile error deltamin; the diameter DS of the disc-shaped molding grinding wheel is determined by the formula DS=d0+zetah0, wherein the h0 is the height of the thread profile, the d0 is the diameter of a cutter bar, and the zeta is a correction factor; and the diameter of the cutter bar d0 is determined by the formula d0=lambdah0, wherein the lambda is a proportionality coefficient. A composite plating process is adopted to enable diamond or cubic boron nitride (CBN) micro powder grains to be solidified on the surface of a base body of the disc-shaped molding grinding wheel. The molding grinding wheel has the advantages that the problems of severe abrasion, breakage, low efficiency and failure of drying process of screw tap tools for processing the small-hole threads of hard and brittle materials are solved, chips discharge is smooth, coolants are not needed to add, and precise and efficient process of the small-hole threads of the hard and brittle materials is achieved.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and relates to a tool for mechanical manufacturing, in particular to a superhard abrasive forming grinding wheel suitable for processing small hole threads of hard and brittle materials on a machine tool by means of spiral forming grinding. Background technique [0002] With the development of production and technology, the progress of microelectronics, optoelectronics, sensor technology and material technology, high volume fraction aluminum matrix composites, ceramics, quartz and other hard and brittle materials, due to their excellent properties such as strong wear resistance and high hardness, are widely used in electronics. , optics, instrumentation, aerospace, national defense and civil industry and many other fields have more and more extensive roles and occupy an increasingly important position. [0003] When processing small hole threads in the traditional process, taps a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23G5/00
Inventor 高航郭东明杨安强鲍永杰曹波黄均亮
Owner DALIAN UNIV OF TECH
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