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Mechanical clamping type inner thread turning cutter

A thread turning and clamping technology, which is applied in thread cutting tools, manufacturing tools, metal processing equipment, etc., can solve the problems of difficult thread processing, low cost, large diameter, etc., and achieves good results, low thread surface roughness, The effect of improving processing efficiency

Inactive Publication Date: 2014-01-22
SHAANXI SHENGMAI PETROLEUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A key part positioning screw sleeve on a construction machinery such as figure 1 As shown, the material is 40Cr, and there is a section of M94×1 large nominal diameter ordinary fine tooth internal thread on the workpiece. In order to prevent heat treatment deformation from affecting the thread accuracy, the thread needs to be processed after heat treatment, and heat treatment The hardness of the final workpiece is 52-57 HRC. Due to the high hardness of the workpiece, coupled with the large nominal diameter and small pitch of the thread, it is very difficult to process this thread with conventional tools, and the tool is resistant to
[0003] Very low usage, prone to "rotten teeth" phenomenon

Method used

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  • Mechanical clamping type inner thread turning cutter
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Experimental program
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Embodiment Construction

[0010] As shown in the figure, the clamp-type internal thread turning tool of the present invention includes a cylindrical cutter bar 3, one end of the cutter bar 3 is provided with a cutter head 1, and a blade 4 is fixedly provided on the cutter head 1. It is fixed on the cutter head 1 by a compression screw 2. The tip of the blade 4 is 0.3-0.5mm higher than the spindle center of the tool bar 3.

[0011] The specific installation method before the tool is used is to first make the blade 4 side flat on the positioning surface of the tool bar 3, tighten the fastening screw 2, so that the positioning surface on the side of the cutter head 1 presses the blade 4, so that the blade 4 is tightened. It is fixed in the clamping and positioning surface between the cutter head 1 and the cutter bar 3. When the blade needs to be replaced, just loosen the fastening screw 2 and remove the blade 4. In order to improve production efficiency, the tool structure adopts a symmetrical design. Two ...

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PUM

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Abstract

The invention relates to a cutter, in particular to a mechanical clamping type inner thread turning cutter. The cutter comprises a cylindrical cutter rod, wherein one end of the cutter rod is provided with a cutter head, the cutter head is fixedly provided with a blade, and the cutter point of the blade is 0.3-0.5mm higher than the center of a main shaft of the cutter rod. When the mechanical clamping type inner thread turning cutter is used for cutting a high-hardness inner thread with a large nominal diameter, the surface roughness of the thread is low, the accuracy class can reach more than 2 levels, machining efficiency can be improved by about 4 times than that of a common cutter, and the effect is good.

Description

Technical field [0001] The invention relates to a tool. Background technique [0002] A key part of a construction machinery positioning screw sleeve such as figure 1 As shown, the material is 40Cr, and there is a section of M94×1 ordinary fine-tooth internal thread on the workpiece. In order to prevent heat treatment deformation from affecting the thread accuracy, the thread needs to be processed after heat treatment. The hardness of the rear workpiece is 52~57 HRC. Due to the higher hardness of the workpiece, plus the larger nominal diameter of the thread and the smaller pitch, it is very difficult to process this thread with a conventional tool, and the tool is resistant [0003] The cost is extremely low, and the phenomenon of "teeth rotten" is prone to occur. Summary of the invention [0004] The invention aims to provide a machine-clamped internal thread turning tool suitable for processing high-hardness and large-nominal diameter internal threads. [0005] The machine-clampin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23G5/00B23G5/02
Inventor 王耀斌
Owner SHAANXI SHENGMAI PETROLEUM
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