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Forming method of hard alloy threaded hole

A technology of cemented carbide and forming method, applied in metal processing equipment, tangent devices, manufacturing tools, etc., can solve the problems of high processing difficulty, high cost and high hardness, and achieve the effect of avoiding processing difficulty

Inactive Publication Date: 2018-02-16
九江金鹭硬质合金有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various structural parts and wear-resistant parts produced with cemented carbide are also more and more threaded. However, cemented carbide has the characteristics of high hardness and difficult processing. EDM, grinding and other processing methods are used for threads. Difficult to process and high cost

Method used

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  • Forming method of hard alloy threaded hole
  • Forming method of hard alloy threaded hole
  • Forming method of hard alloy threaded hole

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Embodiment Construction

[0021] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present invention, and any similar structures and similar changes of the present invention should be included in the protection scope of the present invention.

[0022] Such as figure 1 Shown, threaded hole processing of the present invention works and implements like this, it is characterized in that method steps are as follows:

[0023] 1. Drilling: Use a small-diameter drill to drill the bottom hole. Since the surface of the hole processed by the drill is relatively rough, the diameter of the bottom hole drilled by the drill is required to be smaller than the small diameter of the thread design.

[0024] 2. Reaming: Use a straight shank milling cutter to expand the inner hole processed by the drill bit. The surface of the inner hole is required to be smooth and flat, and the size is...

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Abstract

The invention discloses a forming method of a hard alloy threaded hole. The forming method of the hard alloy threaded hole is characterized by comprising the following steps of preparing materials, wherein PEG is used as a forming agent, raw materials are ground with ethyl alcohol, and after spray drying is conducted, a mixture is generated; conducting mold pressing, wherein compression molding isconducted on the mixture; conduct semi-machining, wherein through a numerical control milling machine or a lathe or a machining center, a dedicated cutter of a special material is used, accurate thread dimension calculation is conducted, and then a threaded hole of a fixed parameter is machined on the pressed blank; and conducting sintering, wherein the needed threaded hole is obtained through sintering formation finally. The forming method of the hard alloy threaded hole has the beneficial effects that through accurate pressed blank shrinkage coefficient control, inner threads are machined on the pressed blank, the machining difficulty existing when the alloy threaded hole is machined after sintering is avoided, and a scheme is provided for machining of the hard alloy threaded hole.

Description

technical field [0001] The invention relates to the field of thread processing and manufacturing, in particular to a method for forming cemented carbide threaded holes. Background technique [0002] With the development requirements of modern industry, threads are widely used in connection, sealing, transmission, fastening and other aspects. Various structural parts and wear-resistant parts produced with cemented carbide are also more and more threaded. However, cemented carbide has the characteristics of high hardness and difficult processing. EDM, grinding and other processing methods are used for threads. The processing is difficult and the cost is high. With the development of semi-processing forming technology, it is possible to turn and mill the compact, realize semi-processing forming of non-precision threads, and semi-processing prefabrication of precision threads, which greatly improves the processing efficiency of cemented carbide threads and reduces Processing c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23G1/00
CPCB23P15/00B23G1/00
Inventor 孙东平郝超魏贤森刘诗彪刘迎平
Owner 九江金鹭硬质合金有限公司
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