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Special-shaped screwer

A thread cutter and special-shaped technology, which is applied in the direction of thread cutting tools, metal processing equipment, tangent devices, etc., can solve the problems of lower production efficiency, more processing space, and reduced chip removal space, so as to improve processing efficiency, simplify processing flow, good overall strength

Inactive Publication Date: 2014-02-05
WUXI YUTIAN PRECISION TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When machining internal thread, the milling cutter needs to go deep into the inner hole for cutting, so the cutter shaft of the milling cutter is longer. In order to ensure the strength of the milling cutter, the cutter rod often takes up more processing space, resulting in the reduction of chip removal space, which is easy to cause tool damage. wear and tear
However, poor chip removal will cause burrs and scratches on the machined inner hole and port, and it is necessary to change the tool again to remove the burr and chamfer, which reduces the production efficiency

Method used

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Such as figure 1 , figure 2 As shown, a special-shaped thread cutter according to the present invention includes a knife handle 1 and a knife bar 2 which are integrally arranged, and a knife head 3 arranged on the inner side of the front end of the knife bar 2, and the knife handle 1 is provided with a machining plane. The parallel locking screw surface 11, when the handle 1 is set on the machine tool holder, the handle 1 is fixedly connected with the tool holder by tightening the screw on the locking screw surface 11; the cutter bar 2 is an eccentric cylindrical structure, which increases the 2 strength to avoid damage to the tool head 3 due to vibration during cutting; the upper part of the tool bar 2 is provided with a chip removal surface 22 parallel to the processing plane, and the chip removal surface 22 is provided with an arc transition to the adjacent...

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Abstract

The invention relates to the technical field of hardware tools, in particular to a special-shaped screwer. The special-shaped screwer disclosed by the invention comprises a tool holder and a tool bar which are integrally arranged, and a tool bit arranged on the inner side of the front end of the tool bar, wherein the tool bit comprises a first cutting edge, a second cutting edge and a third cutting edge which are connected in sequence into a threaded tooth form; a plus 5-degree included angle is formed between the first cutting edge and a planar Y axis; a front finishing edge and a back finishing edge are symmetrically formed on both sides of the tool bit; minus 3-degree included angles are formed between the front finishing edge and a planar X axis as well as between the back finishing edge and the planar X axis; the front end of the front finishing edge on the tool bit is provided with a chamfer edge; a plus 30-degree included angle is formed between the chamfer edge and the planar Y axis. The special-shaped screwer is reasonable in structure, the overall strength of a tool is enhanced, the internal thread machining efficiency can be effectively increased, special-shaped screw threads can be molded at one time by cutting, the machining flow is simplified, and the processes of thread turning, burr removing and chamfering are realized.

Description

technical field [0001] The invention relates to the technical field of hardware cutting tools, in particular to a special-shaped thread cutter. Background technique [0002] At present, the common internal thread processing generally adopts cemented carbide milling cutter and frame forming milling cutter. The internal thread milling cutter includes a handle, arbor and cutter head. The workpiece and milling cutter are driven by the CNC machine tool for rotation and axial cutting. processing. When machining internal thread, the milling cutter needs to go deep into the inner hole for cutting, so the cutter shaft of the milling cutter is longer. In order to ensure the strength of the milling cutter, the cutter rod often takes up more processing space, resulting in the reduction of chip removal space, which is easy to cause tool damage. Wear and tear. However, poor chip removal will produce burrs and scratches at the processed inner hole and port, requiring a new tool change to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23G5/20
Inventor 朱胜雷
Owner WUXI YUTIAN PRECISION TOOL