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Lengthening bar

A technology of extension rods and shafts, applied in the field of extension rods, can solve problems such as inability to process threaded holes, and achieve the effects of compact structure, convenient use, and accurate processing accuracy

Inactive Publication Date: 2013-10-23
KUNSHAN ETEK METAL IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The general extended M4 tap is 100mm long, and the shank diameter is D25, so this threaded hole cannot be processed

Method used

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Embodiment Construction

[0013] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0014] Such as figure 1 and figure 2 As shown, a kind of extension bar, described extension bar, comprises shaft 1, tap hole 2, bolt 3, and described shaft 1 is rectangular, and described shaft 1 length is 180mm, and described tap hole 2 is connected on the bar Body 1 right end position, described bolt 3 is installed on tap hole 2 above.

[0015] The above is only one of the specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto, and any person familiar with the art can think of it without creative work within the technical scope disclosed in the present invention. Changes or ...

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Abstract

The invention provides a lengthening bar, which comprises a bar body (1), a screw tap hole (2) and a screw bolt (3), wherein the bar body (1) is in a rectangular shape, and the length of the bar body (1) is 180mm. The lengthening bar has the advantages that the structure is compact, the processing precision is accurate, the use is convenient, and the like.

Description

technical field [0001] The invention relates to the technical field of threaded hole processing, in particular to an extension rod. Background technique [0002] Due to the interference of the holes on some special positions of the workpiece during the processing, the distance to the surface of the M4 threaded hole on the general workpiece is 190mm, and the distance to the side is 8mm. The general extended M4 tap is 100mm long, and the shank diameter is D25, so this threaded hole cannot be machined. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an extension rod with the advantages of compact structure, accurate processing precision and convenient use. [0004] In order to solve the above technical problems, the present invention provides an extension rod. The extension rod includes a shaft, a tap hole, and a bolt. The shaft is rectangular, and the length of the shaft is 180 mm. [0005] Further, the tap hole ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23G1/44B23G1/16
Inventor 廖大维
Owner KUNSHAN ETEK METAL IND
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