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Combination drill for countersink of frame

A combined drilling and countersinking technology, used in drilling/drilling equipment, repair drilling, drilling tool accessories, etc., can solve the problems of difficult processing of the connecting part of the face teeth and reduced tool strength.

Inactive Publication Date: 2015-03-25
CHANGZHOU GREAT CAR LIGHT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For the processing of counterbore holes for various bolts and screws, the general manufacturer first drills the bottom hole and then uses the reaming tool to complete the counterbore processing. Some large-scale enterprises use the overall imported tool for processing. Cut out the relief groove and process the back angle of the end tooth, so that the tool strength is greatly reduced

Method used

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  • Combination drill for countersink of frame
  • Combination drill for countersink of frame

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Embodiment Construction

[0012] Depend on figure 1 and figure 2 It can be seen that the rack counterbore combination drill of the present invention comprises a drill bit 1, a cutter body 2 and a drill adjusting threaded shaft 3 arranged in the cutter body 2, the drill bit 1 is loaded into the cutter body 2, and the left end of the cutter body 2 is provided with a knurl Cover 4, the knurled cover 4 is provided with a blade 5 and a clamping screw 6 that tightens the blade 5, a gasket 7 is arranged between the clamping screw 6 and the blade 5, and the drill bit adjusts the threaded shaft 3 and the cutter body 2 threaded connections.

[0013] After adopting the above structure, the present invention has simple and reasonable structure, low cost and high processing efficiency.

[0014] The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made b...

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Abstract

The invention relates to a combination drill for a countersink of a frame. The combination drill comprises a drill, a cutter body and a drill adjusting threaded shaft which is arranged in the cutter body, wherein the drill is mounted in the cutter body, a knurled outer sleeve is arranged at the left end of the cutter body, a blade and a leaning screw for leaning the blade are arranged on the knurled outer sleeve, the drill adjusting threaded shaft is in threaded connection with the cutter body, and a gasket is arranged between the leaning screw and the blade. By adoption of the structure, the combination drill provided by the invention is simple and reasonable in structure, low in cost and high in processing efficiency.

Description

technical field [0001] The invention relates to a drill bit, in particular to a rack counterbore combined drill. Background technique [0002] For the processing of counterbore holes for various bolts and screws, the general manufacturer first drills the bottom hole and then uses the reaming tool to complete the counterbore processing. Some large-scale enterprises use the overall imported tool for processing. The back angle of the end teeth is processed after cutting out the undercut, which greatly reduces the strength of the tool. Contents of the invention [0003] The object of the present invention is to provide a rack counterbore combination drill which is convenient for processing end tooth relief angles, low in cost, good in cutting performance and high in processing efficiency. [0004] The technical scheme that realizes the object of the present invention is as follows: [0005] The rack counterbore combination drill includes a drill bit, a cutter body and a dril...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/08
CPCB23B51/108
Inventor 孙红艳
Owner CHANGZHOU GREAT CAR LIGHT