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Tap

A flat and tooth technology, applied in the field of wire tapping, can solve the problems of increasing the probability of wire tapping and reducing the structural strength of the tooth 3, and achieve the effect of reducing the probability of wire tapping and reducing the resistance.

Active Publication Date: 2018-10-02
许灵生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In other existing taps, an oil groove will be recessed in the axial direction of the tooth part 3 to increase the injection amount of cutting oil, but once the tooth part 3 is recessed with an oil groove, the oil groove of the tooth part 3 will be reduced. Structural strength also faces the problem of increased probability of wire tap breakage

Method used

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Embodiment Construction

[0044] In order to facilitate the description of the central idea of ​​the present invention shown in the column of the above-mentioned summary of the invention, specific examples are used to express it. The various objects in the embodiments are drawn according to the proportions suitable for enumerating and explaining, rather than according to the actual elements.

[0045] See Figure 3 to Figure 6 As shown, the wire tap 100 of the present invention is an extrusion wire tap, which is used to rotate and compress a drill hole 200 to form a thread. The thread tap 100 has a rod 10 at one end and a square columnar tooth 20 at the other end. The rod 10 is clamped and fixed by a tapping device.

[0046] The tooth portion 20 has a threaded section 21 circumferentially arranged on the outer edge along the axial direction. The threaded section 21 has several cutting edges 22. The periphery of each cutting edge 22 has four cutting points 23, and is cut on every two adjacent cutting edges. ...

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PUM

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Abstract

The invention provides a screw tap. One end of the screw tap is equipped with a rod part; the other end of the screw tap is equipped with a tetragonal prism shaped tooth part; the outer edge of the tooth part is equipped with a threaded section in a surrounding mode in the axial direction; the threaded section is equipped with a plurality of cutting edges; the peripheral edge of each cutting edge is equipped with four cutting points; two cutting arc surfaces which are symmetrically arranged and a retracting plane which is positioned between the two cutting arc surfaces and is connected with the two cutting arc surfaces are arranged between every two adjacent cutting points; and the two cutting arc surfaces are formed in the same radius. Therefore, the screw cap can reduce cutting resistance of the screw cap, and reduces the breakage probability.

Description

Technical field [0001] The present invention relates to a wire tap, in particular to a wire tap that can reduce cutting resistance and is not easy to break during processing. Background technique [0002] Such as figure 1 and figure 2 Shown is an existing extrusion tap 1 with a rod 2 at one end and a tooth 3 at the other end. The rod 2 is used for clamping by an instrument, and the outer edge of the tooth 3 is along the A plurality of cutting edges 4 are arranged around in the axial direction, and the periphery of each cutting edge 4 has four cutting points 5, and a convex cutting arc surface 6 is formed between two adjacent cutting points 5. Among them, the extrusion wire tap 1 is a wire tap that forms a thread in a drill hole 7 by means of rotational compression molding, which is more suitable for use in materials with ductility and plastic processing, such as aluminum alloy. [0003] However, the radius of curvature of the cutting arc surface 6 determines the area of ​​the bor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23G5/06
Inventor 许灵生
Owner 许灵生