CN212945623U

CN212945623U - Polishing drill bit

Info

Publication number: CN212945623U
Application number: CN202021567294.3U
Authority: CN
Inventors: 璧靛己; 赵强
Original assignee: Dongguan Liheng Coating Technology Co ltd
Current assignee: Dongguan Liheng Coating Technology Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-04-13
Anticipated expiration: 2030-07-31

Abstract

The utility model belongs to the technical field of the drill bit and specifically relates to a polishing drill bit is related to, the cutting tool comprises a cutter body, the handle of a knife, the cutter body is connected with the handle of a knife, the cutter body includes the helical blade, the chip groove sets up around the center of cutter body respectively, be provided with the abrasive stick on the cutter body, the abrasive stick is located the helical blade, the front end center department of cutter body still is provided with the centering drill, through be provided with the abrasive stick on the cutter body, the abrasive stick is located the helical blade, make polishing drill bit polish the burr accessible abrasive stick that produces when adding man-hour to the work piece, improve the smooth finish of the cutting face of work piece and then improve the quality of work piece processing, through being provided with the centering drill in the front end center department of cutter body, make polishing drill bit can directly center to the hole location when drilling, needn't.

Description

Polishing drill bit

Technical Field

The utility model belongs to the technical field of the drill bit and specifically relates to a polishing drill bit is related to.

Background

The drill is a tool for drilling through holes or blind holes in solid materials and reaming existing holes. Commonly used drill bits mainly include twist drills, flat drills, center drills, deep hole drills, and trepanning drills. In the prior art, a twist drill generally has no centering function during drilling, and needs to be positioned by the centering drill and then drill by the twist drill to a certain depth.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.

The utility model provides a burnishing drill, includes cutter body, handle of a knife, and the cutter body is connected with the handle of a knife, and the cutter body includes helical blade, chip groove, and helical blade, chip groove set up around the center of cutter body respectively, are provided with the abrasive stick on the cutter body, and the abrasive stick is located the helical blade, and the front end center department of cutter body still is provided with the centering and bores.

Furthermore, the grinding bars are arranged in a plurality of numbers and are uniformly distributed on the surface of the spiral cutting edge.

Furthermore, a chisel edge is arranged on the cutter body and is positioned at the center of the front end of the centering drill.

Further, the angle of the centering drill is set to be 85-95 degrees.

Further, the tail of the cutter handle is provided with a chamfer angle of 45 degrees.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a burnishing drill, through be provided with the abrasive stick on the cutter body, the abrasive stick is located the helical blade, makes the burnishing drill polish the burr accessible abrasive stick that produces when adding man-hour to the work piece, improves the smooth finish of the cutting face of work piece and then improves the quality of work piece processing, through being provided with the pilot drill in the front end center department of cutter body, makes the burnishing drill can be to the hole location direct centering when drilling, needn't use other drill centering, reduces the processing step for the processing rhythm, improves work efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the abrasive strip of the present invention;

fig. 3 is a side view of the knife body of the present invention.

In the figure: the cutter body 1, the handle of a knife 2, the helical cutting edge 3, the chip groove 4, the abrasive strip 5, the pilot drill 6, the chisel edge 7, chamfer 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-2, in the embodiment of the present invention, a polishing drill bit, including cutter body 1, handle of a knife 2, cutter body 1 is connected with handle of a knife 2, and cutter body 1 includes helical blade 3, chip groove 4, and helical blade 3, chip groove 4 set up around the center of cutter body 1 respectively, are provided with abrasive strip 5 on the cutter body 1, and abrasive strip 5 is located helical blade 3, and the front end center department of cutter body 1 still is provided with centering drill 6.

The utility model provides a burnishing drill, through be provided with the abrasive stick 5 on cutter body 1, abrasive stick 5 is located helical blade 3, make burnishing drill polish the burr accessible abrasive stick 5 that the work piece adds the production man-hour, improve the smooth finish of the cutting face of work piece and then improve the quality of work piece processing, through being provided with centering drill 6 in the front end center department of cutter body 1, make burnishing drill can be to the hole location direct centering when drilling, needn't use other drill centering, reduce the processing step, accelerate the processing rhythm, and the work efficiency is improved.

Furthermore, a plurality of grinding bars 5 are arranged, and the plurality of grinding bars 5 are uniformly distributed on the surface 3 of the spiral cutting edge; through setting up a plurality of abrasive bars 5, improve the polishing effect of burnishing bit to the burr of processing work piece.

As shown in fig. 3, further, the cutter body 1 is provided with a chisel edge 7, and the chisel edge 7 is located at the center of the front end of the pilot drill 6; through the setting of chisel edge 7, reduce the sharpness of centering drill 6 and make the core of centering drill 6 thicker and then improve the hardness of centering drill 6, make the polishing drill bit difficult impaired when adding the core of centering drill 6 to the work piece that toughness is stronger.

Further, the angle of the centering drill 6 is set to be 85-95 degrees; the angle of the centering drill 6 is set to 85-95 degrees, so that the sharpness of the centering drill 6 is improved, and the working efficiency of the polishing drill is improved.

Further, a chamfer 8 with an angle of 45 degrees is arranged at the tail part of the cutter handle 2; through the setting of chamfer 8, avoid burnishing drill's closed angle fish tail user or other parts, and chamfer 8 has the guide effect, makes things convenient for burnishing drill to install on the machine that uses.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The polishing drill bit is characterized by comprising a cutter body and a cutter handle, wherein the cutter body is connected with the cutter handle and comprises a spiral cutting edge and a chip removal groove, the spiral cutting edge and the chip removal groove are arranged around the center of the cutter body respectively, a grinding strip is arranged on the cutter body and is positioned on the spiral cutting edge, and a centering drill is further arranged at the center of the front end of the cutter body.

2. A burnishing drill according to claim 1, wherein the plurality of bars is provided evenly across the surface of the helical cutting edge.

3. A burnishing drill as claimed in claim 1, wherein the cutter body is provided with a chisel edge, the chisel edge being located centrally of the nose of the pilot drill.

4. A burnishing drill as claimed in claim 1, wherein the angle of the pilot bit is set to between 85 and 95 degrees.

5. The burnishing drill of claim 1, wherein the junction of the cutter body and the shank is disposed at an acute angle.

6. A burnishing drill as claimed in claim 1, wherein the shank is provided with a chamfer at 45 ° at its tail.