CN218015983U - Guide pillar type drill bit for machining holes of gearbox support - Google Patents

Abstract

The utility model discloses a guide pillar type drill bit for processing a bracket hole of a gearbox, which comprises a drill bit body, wherein the drill bit body is provided with two cutting edges and two cutting edges, and the width of each cutting edge is 2mm; an R-angle is provided on the cutting edge. The utility model discloses hole on the guide pillar type drill bit processing gearbox support, process time shortens to 2 minutes 40 seconds, and the aperture is stable, and the steady quality only needs to do the first final piece of tool changing, effectual promotion processing procedure ability, processing procedure efficiency.

Description

Guide pillar type drill bit for machining holes of gearbox support

The technical field is as follows:

the utility model relates to a guide pillar type drill bit for processing gearbox support hole.

Background art:

export gearbox support, the material is grey iron, aperture diameter: phi 25; the processing size requirement is as follows: phi 25 +/-0.05, and the requirement of hole wall roughness: ra0.6 or less.

The current processing mode is as follows: the method comprises the following steps of pre-drilling a first phi 23.5 drill bit, pre-drilling a second phi 24.8 milling cutter, pre-drilling a third drill bit: the roll finishing cutter has the processing time of 6 minutes and 58 seconds, has more processing steps, low efficiency and often has poor aperture.

The invention content is as follows:

the utility model relates to a solve the problem that above-mentioned prior art exists and provide a guide pillar type drill bit for processing of gearbox support hole.

The utility model discloses the technical scheme who adopts has:

the utility model provides a guide pillar type drill bit for gearbox support spot facing work which characterized in that: the drill bit comprises a drill bit body, wherein two cutting edges and two cutting margins are arranged on the drill bit body, and the width of each cutting margin is 2mm; an R-angle is provided on the cutting edge.

Further, the R angle is R0.2mm.

The utility model discloses following beneficial effect has:

the utility model discloses hole on the guide pillar type drill bit processing gearbox support, process time shortens to 2 minutes 40 seconds, and the aperture is stable, and the steady quality only needs to do the first final piece of tool changing, effectual promotion processing procedure ability, processing procedure efficiency.

Description of the drawings:

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

fig. 2 is a side view of the present invention.

Wherein:

1. a drill bit body; 3. a land; 4: a cutting edge.

The specific implementation mode is as follows:

the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 and 2, the utility model relates to a guide pillar type drill for processing a bracket hole of a gearbox, which comprises a drill body 1, wherein the drill body 1 is provided with two cutting edges 4 and two lands 3, and the width of the lands 3 is 2mm; the cutting edge 4 is provided with an angle r0.2mm.

The utility model discloses the sword area width of guide post type drill bit is 2mm, according to the center of drill point, bores down and goes, and in addition sword area width, it is fine to bore out smooth finish, plays fine additional action in the course of working, has stopped producing because of beating that other factors caused badly, and CPK1.66 is above, only does the first last piece detection of tool changing, has practiced thrift greatly because of anxious bad time of picking up entirely that produces in the production process.

The cutting edges are arranged to be 2, the cutting edges 4 are provided with R0.2mm angles, the R angles and the cutting edges play an auxiliary purpose after the drill point contacts with a workpiece, vibration cannot be generated in the machining process, the service life of the cutter is prolonged by 10 times, the aperture position degree is increased, and the smoothness is improved.

Export gearbox support, material-grey iron (FD 550), aperture diameter: processing size requirement of 25: 25 +/-0.05, the requirement of hole wall roughness: ra0.6 below, the current processing mode is as follows: the first 23.5 drill bit is pre-drilled, the second $24.8 milling cutter, the third: the machining time of the roller burnishing cutter is 6 minutes 58 seconds, the machining steps are multiple, poor hole diameter often occurs, a guide column type drill bit is used, the machining time is shortened to 2 minutes 40 seconds, the hole diameter is stable, the quality is stable, and only the first and the last parts of the cutter are required to be changed. The manufacturing capability and efficiency are effectively improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims (2)

1. The utility model provides a guide pillar type drill bit for gearbox support spot facing work which characterized in that: the drill bit comprises a drill bit body (1), wherein two cutting edges (4) and two cutting margins (3) are arranged on the drill bit body (1), and the width of each cutting margin (3) is 2mm; an R angle is provided on the cutting edge (4).

2. The guide post type drill bit for drilling a bracket of a gearbox according to claim 1, wherein: the R angle is R0.2mm.

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