Drilling tool effectively avoiding damage of cutting edge

A technology for drilling tools and cutting edges, which is applied in drilling tool accessories, manufacturing tools, drill repairing, etc. It can solve problems that affect the smooth production, easy chipping, scrapped blades, etc., so as to avoid easy chipping and improve the service life of the blades. , to avoid the effect of extrusion

Active Publication Date: 2017-09-15
CENTRIX EG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During processing, the centering point is the first to touch the workpiece, and its linear speed is close to zero, which is equivalent to extruding the workpiece, so it is easy to break, resulting in the scrapping of the blade and affecting the smooth production

Method used

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  • Drilling tool effectively avoiding damage of cutting edge
  • Drilling tool effectively avoiding damage of cutting edge
  • Drilling tool effectively avoiding damage of cutting edge

Examples

Experimental program
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Effect test

Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] In order to provide a drilling tool that effectively avoids edge damage, such as Figure 1 to Figure 3 As shown: the drilling tool includes a drill body 1, an inner blade blade 2 and an outer blade blade 3, the inner blade blade 2 and the outer blade blade 3 are all connected to the drill body 1, the inner blade blade 2 is provided with an inner blade 4, and the outer blade blade 2 The outer edge 5 is arranged on the edge blade 3; the surface perpendicular to the axis of the drill body 1 is the drill cutting surface 6; the inner edge 4 includes a first inner edge segment 4-1, a second inner core segment 4-3 and a third inner edge Segment 4-4; the frontmost part of the first inner blade segment 4-1 is the centering point 4-2, and the first inner blade segment 4-1 extends outward and rearward from the centering point 4-2; the third inner b...

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PUM

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Abstract

The invention discloses a drilling tool effectively avoiding damage of a cutting edge, relates to the field of machining cutters, and provides the drilling tool capable of effectively avoiding damage of the cutting edge. The drilling tool comprises a drill bit body, an inner edge blade and an outer edge blade, wherein the inner edge blade and the outer edge blade are connected with the drill bit body. The inner edge blade is provided with an inner edge, and the outer edge blade is provided with an outer edge. The inner edge comprises a first inner edge section, a second inner edge section and a third inner edge section. The part, located at the foremost position, of the first inner edge section is a centering point, and the first inner edge section extends outwards to the rear portion from the centering point. The third inner edge section extends outwards to the front portion from the center of the drill bit body. The second inner edge section is located between the first inner edge section and the third inner edge section. The second inner edge section extends outwards to the front portion from the third inner edge section. The outer end of the second inner edge section is located behind the outer end of the first inner edge section. The second inner edge section is in smooth transition with the first inner edge section and the third inner edge section. According to the drilling tool, the situation that the inner edge cutting edge is prone to breakage can be effectively avoided.

Description

technical field [0001] The invention relates to the field of machining tools, in particular to a drilling tool which can effectively avoid cutting edge damage. Background technique [0002] A common drilling tool includes a drill body, an inner blade and an outer blade, the inner blade and the outer blade are connected to the drill body, the inner blade is provided with an inner blade, and the outer blade is provided with an outer blade. The end of the drilling tool is specified as Figure 4 As shown, the inner edge extends from the center of the drill bit to the rear and outward, and the front end of the inner edge is the centering point, which is located at the center of the drill bit. During processing, the centering point is the first to touch the workpiece, and its linear velocity is close to zero, which is equivalent to squeezing the workpiece, so it is easy to break, resulting in the scrapping of the blade and affecting the smooth progress of production. Contents of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/00
CPCB23B51/00Y02P70/10
Inventor 胡翱
Owner CENTRIX EG
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