Drilling tool for forming R type center hole by one step

A technology for drilling tools and center holes, which is applied in the direction of center drills, drilling tool accessories, drilling/drilling equipment, etc., which can solve the difficulty in achieving the consistency of machining accuracy and roughness R-shaped center holes, which restricts the development of enterprises and users Technical requirements and other issues, to achieve the effect of promoting enterprise development, improving work efficiency, roughness and smoothness

Inactive Publication Date: 2014-04-02
安庆市振发汽车锻件有限责任公司
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Problems solved by technology

At present, when manufacturing enterprises process B6 output and input gear shafts, most of the processing methods adopt step-by-step processing on a lathe, which has the disadvantages of long processing time, labor and time, and low work efficiency, and the processing accuracy and roughness and the R-shaped center hole The consistency is difficult to meet the technical requirements of users, which seriously restricts the development of enterprises

Method used

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  • Drilling tool for forming R type center hole by one step
  • Drilling tool for forming R type center hole by one step

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Embodiment Construction

[0014] The drilling tool for one-time forming R-shaped central hole of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0015] Depend on figure 1 , figure 2 It can be seen that the drilling tool for one-time forming R-shaped central hole of the present invention includes a tool body 1, an R-shaped chip cutting edge 2 and a chip removal groove 3 are arranged in the middle of one end of the tool body 1, and the top of one end of the tool body 1 is arranged Chipping edges with top corners4.

[0016] The technology of this embodiment is mainly solved by the following technical solutions: by setting an R-shaped chip cutting edge 2 and a chip discharge groove 3 in the middle of one end of the tool body 1, the purpose of fast chip cutting, high machining dimensional accuracy, and one-time molding is realized. Thereby improving the performance of the product.

[0017] In this embodiment, the tool body 1 is made of...

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Abstract

The invention discloses a drilling tool for forming an R type center hole by one step. The drilling tool comprises a tool main body, wherein an R type chip cutting edge and a chip groove are arranged on the middle part at one end of the tool main body; a vertex angle is formed on the top of one end of the tool main body; and the chip groove is set into spiral type. The drilling tool disclosed by the invention has characteristics of being quick in chip cutting, smooth in chip removal, high in machining dimension precision and capable of forming by one step, can be widely applied to machining a center hole of a gearbox input and output gear shaft of a high-grade car gearbox with high precision requirements, and the product quality is greatly improved.

Description

technical field [0001] The invention belongs to a tool for processing input and output gear shafts of high-grade car gearboxes, in particular to a drilling tool for one-time forming R-shaped central holes. Background technique [0002] The high-end car gearbox (B6 input and output gear shaft) requires high precision, and the main part to ensure the accuracy is the center hole. Both ends of the B6 output gear shaft are non-standard large R-shaped center holes, and the misalignment requirement is 0.02mm. The inner surface roughness of the R-type center hole is required to reach Ra1.6. At present, when manufacturing enterprises process B6 output and input gear shafts, most of the processing methods adopt step-by-step processing on the lathe, which has the disadvantages of long processing time, labor and time, and low work efficiency, and the processing accuracy and roughness and the R-shaped center hole Consistency is difficult to meet the technical requirements of users, seri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/00
CPCB23B51/0063
Inventor 刘友刚孙爱生王砚
Owner 安庆市振发汽车锻件有限责任公司
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