CN207288978U

CN207288978U - Lineback calendering drill bit

Info

Publication number: CN207288978U
Application number: CN201720854244.5U
Authority: CN
Inventors: 刘铭煜
Original assignee: Kunshan OSK Precision Tools Co Ltd
Current assignee: Kunshan OSK Precision Tools Co Ltd
Priority date: 2017-07-14
Filing date: 2017-07-14
Publication date: 2018-05-01
Anticipated expiration: 2027-07-14

Abstract

A kind of lineback calendering drill bit；Including drillstock, and the drill body being connected with drillstock；The drill body is equipped with that lineback is spiral, cutting edge and corresponding chip space, the spiral difference the 1st of the lineback, 4 linebacks are spiral, the 2nd, 5 linebacks are spiral and the 3rd, 6 linebacks are spiral；The cutting edge is three, and the cutting edge described in this three articles is respectively end face main cutting edge, the 1st, 3 front cutting edges, the 2nd, 4 front cutting edges；The chip space is main chip space, the 1st, 3 secondary chip spaces, the 2nd, 4 secondary chip spaces respectively.The processing of the utility model routine such as thread Pilot hole, bolt hole universal hole in for auto parts machinery, improves machining accuracy；For location hole, matching hole equally accurate hole, realizes multiple operation Compound Machining, greatly improves production efficiency.Realize a knife multi-purpose function, greatly reduce client's cost of charp tool；G6 lineback calendering drill bits improve product quality well, improve production efficiency, reduce the target of the cost of charp tool.

Description

Lineback calendering drill bit

Technical field

The utility model belongs to tooling cost field, is related to a kind of lineback calendering drill bit, which uses In being processed in auto-parts, the general processing to thread Pilot hole, bolt hole etc., and location hole, matching hole, drill and ream or bore Boring Compound Machining.

Background technology

Drill bit is drilling machine, the cutter on drilling machine, for causing hole on workpiece or rock, drill bit in drilling, by Smaller in bit tip angle, drill bit part easily occurs tipping, is turned, it is necessary to which frequent tool changing, adds production cost；In deep hole plus In man-hour, it is it is difficult to ensure that workpiece hole not have the trickle control of auxiliary positioning and back taper size in deep hole processing on curved surface especially Straightness（Precision）And processing efficiency, and drill bit, in drilling, since drill bit pierces, workpiece is deeper, and chip space is flourish considers space to be worth doing It is limited, in processing, chip space is easily blocked, causes Driller Exothermic to wear and fracture.

Hyundai Motor is the highly integrated product of a kind of machine-building and electrical control.According to incompletely statistics, an automobile It is direct or indirect in more than 90% part production process to be related to mechanical processing, metal cutting, Drilling operation are particularly, therefore Cutter, drill bit etc. also just become a kind of tool of production in automobile making extremely.Currently used cutter, drill bit；Processing Thread Pilot hole in auto parts machinery, for bolt hole when conventional universal hole, machining accuracy is not high；For essences such as location hole, matching holes Hole is spent, it is necessary to multiple working procedure Compound Machining, low production efficiency.

Therefore, how to solve the above problems, be the content to be studied of those skilled in the art.

The content of the invention

To overcome above-mentioned deficiency of the prior art, the utility model aim is to provide a kind of lineback calendering drill bit.

In order to achieve the above objects and other related objects, the utility model provides a kind of lineback calendering drill bit；Including drillstock, And the drill body being connected with drillstock；The drill body is equipped with spiral lineback, cutting edge and corresponding chip space, described The spiral difference the 1st of lineback and the 4th lineback it is spiral, the 2nd and the 5th lineback it is spiral and the 3rd and the 6th lineback is spiral；The cutting edge is Three, the cutting edge described in this three articles is respectively the front cutting edge of the front cutting edge of end face main cutting edge, the 1st and the 3rd, the 2nd and the 4th； The chip space is the secondary chip space in the secondary chip space in main chip space, the 1st and the 3rd, the 2nd and the 4th respectively；The main chip space is located at institute State the spiral upper end of the 1st, 4 linebacks；It is spiral and the 2nd and the 5th that 1st and the 3rd secondary chip space is located at the 1st and the 4th lineback Between lineback is spiral；2nd and the 4th secondary chip space is located at that the 2nd and the 5th lineback is spiral and described 3rd, 6 linebacks are spiral Between.

In above-mentioned technical proposal, related content is explained as follows：

1st, in such scheme, the lineback spiral radially equidistant 6 points of distributions, distribution angle on the drill body For 60 °, axial equidistantly point distribution, spacing 1.5D；The spiral line style radius of curvature of lineback is 3.212D；Lineback width is 0.08D, wherein D are the maximum gauge of longitudinal stress drill body.

2nd, in such scheme, the end face main cutting edge is SE type cutting edges, and it is spiral that its sword terminates the 1st and the 4th lineback； The the 1st and the 3rd front cutting edge is opened at the groove end of described 1st and the 3rd secondary chip space, and the 1st and the 3rd front cutting edge is F2 type cutting edges, It is spiral that its sword terminates the 2nd and the 5th lineback；The the 2nd and the 4th front cutting edge is opened at the groove end of described 2nd, 4 secondary chip spaces, and described the It is spiral that the sword of 2 and the 4th front cutting edge terminates the 3rd and the 6th lineback.

3rd, in such scheme, the drillstock and the drill body are hard alloy bar, and the hardness of the bar is HRA93.6, bending strength 3900N/mm2, red hardness are 1200 DEG C, and tungsten carbide particle degree is 0.4 μm, and amount containing cobalt is 8.3%.

4th, in such scheme, the outer rim of the drillstock and the drill body is equipped with coating, the main component of the coating Include TiAlN, complex element C, Cr, Ni, Si；The coating layer thickness is 0.1-0.3 μm, and the surface roughness of the coating is Ra0.2。

Since above-mentioned technical proposal is used, the utility model this have the advantage that compared with prior art：

The lineback calendering drill bit of the utility model contrasts existing conventional knife, better than original during initial manufacture 1-200 part workpiece Cutter；Single-piece work man-hour significantly shortens 88.9%.Single-piece cutter expense reduces by 29.5%.The utility model is for auto parts machinery The processing of the routine universal hole such as middle thread Pilot hole, bolt hole, improves machining accuracy；For location hole, matching hole equally accurate hole, Realize multiple operation Compound Machining, greatly improve production efficiency.Realize a knife multi-purpose function, greatly reduce client's cutter Cost；G6 lineback calendering drill bits improve product quality well, improve production efficiency, reduce the target of the cost of charp tool.

Brief description of the drawings

Fig. 1 is the utility model structure diagram；

Fig. 2 is the schematic cross-section of the utility model bit head.

Embodiment

Illustrate the embodiment of the utility model by particular specific embodiment below, those skilled in the art can be by this Content disclosed by specification understands other advantages and effect of the utility model easily.

Please refer to Fig.1 to Fig. 2.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to Coordinate the revealed content of specification, so that those skilled in the art understands and reads, be not limited to the utility model Enforceable qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size Adjustment, in the case where not influencing the effect of the utility model can be generated and the purpose that can reach, should all still fall in the utility model Revealed technology contents are obtained in the range of covering.Meanwhile in this specification it is cited as " on ", " under ", " left side ", The term on " right side ", " centre " and " one " etc., is merely convenient to understanding for narration, and it is enforceable to be not used to restriction the utility model Scope, its relativeness are altered or modified, enforceable when being also considered as the utility model in the case where changing technology contents without essence Category.

As shown in Figure 1 to Figure 2, a kind of lineback calendering drill bit；Including drillstock 1, and the drill body 2 being connected with drillstock 1；Institute Drill body 2 is stated equipped with lineback is spiral, cutting edge and corresponding chip space, the spiral difference the 1st of the lineback and the 4th lineback The lineback spiral 4 of spiral 3, the 2nd and the 5th and the 3rd and the 6th lineback spiral 5；The cutting edge is three, the cutting described in this three Sword is respectively end face main cutting edge the 6, the 1st and the 3rd front cutting edge the 7, the 2nd and the 4th front cutting edge 8；Based on the chip space difference The secondary chip space 11 of the secondary chip space the 10, the 2nd and the 4th of chip space the 9, the 1st and the 3rd；The main chip space 9 is positioned at the described 1st and the 4th back of the body The upper end of line spiral 3；Described 1st and the 3rd secondary chip space 10 is located at the 1st and the 4th lineback spiral 3 and the 2nd and the 5th lineback spiral shell Between rotation 4；Described 2nd and the 4th secondary chip space 11 is located at the 2nd and the 5th lineback spiral 4 and the 3rd and the 6th lineback is spiral Between 5.

The spiral radially equidistant 6 points of distributions on the drill body 2 of the lineback, distribution angle is 60 °, axial etc. Spacing point is distributed, spacing 1.5D；The spiral line style radius of curvature of lineback is 3.212D；Lineback width is 0.08D, and wherein D is vertical To the maximum gauge of stress drill body.

The end face main cutting edge 6 is SE type cutting edges, and it is spiral that its sword terminates the Isosorbide-5-Nitrae lineback；Described 1st, 3 secondary chip removals The 1st, 3 front cutting edges are opened at the groove end of groove 10, the described 1st, 3 front cutting edges 7 be F2 type cutting edges, its sword terminates the 2nd, 5 lineback Spiral 4；The 2nd, 4 front cutting edges 8 are opened at the groove end of described 2nd, 4 secondary chip spaces 11, and the described 2nd, the sword termination institute of 4 front cutting edges 8 State the 3rd, 6 lineback spiral 5.

The drillstock 1 and the drill body 2 are hard alloy bar, and the hardness of the bar is HRA93.6, bending strength For 3900N/mm2, red hardness is 1200 DEG C, and tungsten carbide particle degree is 0.4 μm, and amount containing cobalt is 8.3%.

The outer rim of the drillstock 1 and the drill body 2 is equipped with coating（Not shown in figure）, the main component of the coating Include TiAlN, complex element C, Cr, Ni, Si；The coating layer thickness is 0.1-0.3 μm, and the surface roughness of the coating is Ra0.2。

The above embodiments are only illustrative of the principle and efficacy of the utility model, new not for this practicality is limited Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model God and all equivalent modifications completed under technological thought or change, should be covered by the claim of the utility model.

Claims

A kind of 1. lineback calendering drill bit；Including drillstock, and the drill body being connected with drillstock；It is characterized in that：The drill bit sheet Body is equipped with that lineback is spiral, cutting edge and corresponding chip space, the spiral difference the 1st of the lineback and the 4th lineback it is spiral, the 2nd It is spiral and the 3rd and the 6th lineback is spiral with the 5th lineback；The cutting edge is three, and the cutting edge described in this three is respectively end face The front cutting edge of the front cutting edge of main cutting edge, the 1st and the 3rd, the 2nd and the 4th；The chip space is main chip space, the 1st and the 3rd respectively The pair chip space of secondary chip space, the 2nd and the 4th；The main chip space is positioned at the spiral upper end of the described 1st, 4 linebacks；Described 1st and 3 secondary chip spaces be located at that the 1st and the 4th lineback is spiral and the 2nd and the 5th lineback it is spiral between；Described 2nd and the 4th secondary chip space Between the 2nd and the 5th lineback is spiral and described 3rd, 6 linebacks are spiral.
2. lineback calendering drill bit according to claim 1, it is characterised in that：The lineback is spiral in the drill body The upper equidistant 6 points of distributions of radial direction, distribution angle is 60 °, axial equidistantly point distribution, spacing 1.5D；The spiral line style of lineback Radius of curvature is 3.212D；Lineback width is 0.08D, and wherein D is the maximum gauge of longitudinal stress drill body.
3. lineback calendering drill bit according to claim 1, it is characterised in that：The drillstock and the drill body are hard Alloy bar material, the hardness of the bar is HRA93.6, and bending strength 3900N/mm2, red hardness is 1200 DEG C, tungsten carbide particle Spend for 0.4 μm, amount containing cobalt is 8.3%.
4. lineback calendering drill bit according to claim 1, it is characterised in that：The outer rim of the drillstock and the drill body Equipped with coating, the coating layer thickness is 0.1-0.3 μm, and the surface roughness of the coating is Ra0.2.