CN205342026U - Fluted drill in processing hole - Google Patents

Fluted drill in processing hole Download PDF

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Publication number
CN205342026U
CN205342026U CN201521029666.6U CN201521029666U CN205342026U CN 205342026 U CN205342026 U CN 205342026U CN 201521029666 U CN201521029666 U CN 201521029666U CN 205342026 U CN205342026 U CN 205342026U
Authority
CN
China
Prior art keywords
sword
fluted drill
cutting edge
edge
angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201521029666.6U
Other languages
Chinese (zh)
Inventor
刘文平
周澄宇
李玉兰
张丽
张强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Polytechnic
Original Assignee
Beijing Polytechnic
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Polytechnic filed Critical Beijing Polytechnic
Priority to CN201521029666.6U priority Critical patent/CN205342026U/en
Application granted granted Critical
Publication of CN205342026U publication Critical patent/CN205342026U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a fluted drill in processing hole, includes the cutter body, the cutter body has a twice spirochaeta, and the twice spirochaeta crosses in cutter body front end axle center department to form a chisel edge, each way in the intersection an operator sword has on the spirochaeta, a cutting edge and a middle part sword before the operator sword includes one, preceding cutting edge with the chisel edge is connected, and preceding cutting edge on the twice spirochaeta has 72~76 contained angle each other, just the length of chisel edge is 2.3~2.6mm. The utility model discloses has better wearability.

Description

A kind of fluted drill processing hole
Technical field
This utility model relates to a kind of cutting tool, specifically, relates to a kind of fluted drill processing hole.
Background technology
In prior art, the hole machined of parts generally to arrange operator to adopt special equipment and cutter to carry out, cutter of the prior art has structure as shown in Figure 1, including cutter head 1, cutter head 1 has front cutting edge 11, there is between this front cutting edge 11 angle of 125 °~150 °.Angle between the cutter front cutting edge 11 of this kind of structure is 125 °~150 °, and cutter has a bigger axial force, but in use, weares and teares relatively big, and produce sharp-pointed grating between cutter and workpiece, and workpiece easily deforms, recessed;After using a period of time, front cutting edge serious wear, in spherical, it is impossible to continues cutting.
Utility model content
Technical problem to be solved in the utility model is to provide the fluted drill in the high processing hole of a kind of wearability, can reduce the phenomenon of front cutting edge serious wear.
To achieve these goals, the fluted drill in processing hole of the present utility model, including cutter hub, described cutter hub has twice spirillum, and twice spirillum crosses at axle center place, cutter hub front end, and form a chisel edge in intersection, having a major cutting edge on every described spirillum together, described major cutting edge includes sword in the middle part of a front cutting edge and, and described front cutting edge is connected with described chisel edge, front cutting edge on twice spirillum has the angle of 72 °~76 ° each other, and the length of described chisel edge is 2.3~2.6mm.
Above-mentioned fluted drill, wherein, at least one described spirochetal outer rim is provided with an attached cutting sword, and described attached cutting sword is relative to the spirochetal hand of spiral horizontally set at its place.
Above-mentioned fluted drill, wherein, described attached cutting cutlery has the drift angle of 50 °~55 °.
Above-mentioned fluted drill, wherein, described middle part sword includes multistage sword body, and described multistage sword body head and the tail connect so that described middle part cutlery has broken line profile.
Above-mentioned fluted drill, wherein, described middle part sword includes:
First sword body, is connected with one end away from described chisel edge of described front cutting edge;
Second sword body, is connected with one end away from described front cutting edge of described first sword body;And
3rd sword body, is connected with one end away from described first sword body of described second sword body.
Above-mentioned fluted drill, wherein, the length of described first sword body is L1, and the length of described second sword body is L2, and the length of described 3rd sword body is L3, L1: L2: L3=3: 2: 1.
Above-mentioned fluted drill, wherein, has an axis, sets a cross section being perpendicular to described axis, and the relatively described cross section of described front cutting edge has the angle of 35 °~38 °.
Above-mentioned fluted drill, wherein, the described first relatively described cross section of sword body has the angle of 22 °~26 °.
Above-mentioned fluted drill, wherein, the described second relatively described cross section of sword body has the angle of 12 °~18 °.
Above-mentioned fluted drill, wherein, the described 3rd relatively described cross section of sword body has the angle of 10 °~14 °.
Beneficial functional of the present utility model is in that: when processing thin pieces (such as sheet metal or hardboard), first chisel edge drills through workpiece, then the front cutting edge on both sides is scraped and is cut out macropore, have the angle of 72 °~76 ° and the design that length is 2.3~2.6mm of chisel edge each other based on front cutting edge, the drill bit tip of fluted drill has better wearability.
More, based on the middle part sword design of attached cutting sword and broken line profile, reaming can be completed further and make hole wall have good surface roughness.
Below in conjunction with the drawings and specific embodiments, this utility model is described in detail, but not as to restriction of the present utility model.
Accompanying drawing explanation
Fig. 1 is the structure chart of a cutter of prior art;
Fig. 2 is the structure chart of fluted drill of the present utility model;
Fig. 3 is the top view of fluted drill in Fig. 2;
Fig. 4 is the A portion enlarged drawing in Fig. 2;
Fig. 5 is the B portion enlarged drawing in Fig. 2;
Fig. 6 is the C portion enlarged drawing in Fig. 2.
Wherein, accompanying drawing labelling
1-cutter head
11-front cutting edge
2-cutter hub
21,22-spirillum
23-chisel edge
24-major cutting edge
241-front cutting edge
Blade in 242-
2421-the first sword body
2422-the second sword body
2423-the 3rd sword body
25-attached cutting sword
A1-axis
M-cross section
The length of L-chisel edge
The length of L1-the first sword body
The length of L2-the second sword body
The length of L3-the 3rd sword body
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical solutions of the utility model are described in detail, to be further understood that the purpose of this utility model, scheme and effect, but are not intended as the restriction of this utility model claims protection domain.
Consult Fig. 2 to Fig. 4, as shown in the figure, the fluted drill in processing hole of the present utility model, including cutter hub 2, cutter hub 2 has twice spirillum 21,22, twice spirillum 21,22 crosses at axle center place, cutter hub front end, and form a chisel edge 23 in intersection, every one spirillum 21,22 has a major cutting edge 24, major cutting edge 24 includes sword 242 in the middle part of a front cutting edge 241 and, front cutting edge 241 is connected with chisel edge 23, and the front cutting edge on twice spirillum has the angle α of 72 °~76 ° each other, and the length L of chisel edge 23 is 2.3~2.6mm.
In conjunction with consulting Fig. 5, the outer rim of spirillum 22 is provided with an attached cutting sword 25, the hand of spiral horizontally set of the spirillum 22 at attached cutting sword 25 its place relative.Certainly, attached cutting sword can also be provided in the outer rim of spirillum 21;It is equally possible that all arrange attached cutting sword in the outer rim of spirillum 21 and in the outer rim of spirillum 22.It is preferred that attached cutting sword 25 has the apex angle ss of 50 °~55 °.
In conjunction with consulting Fig. 6, middle part sword 242 includes multistage sword body, and multistage sword body head and the tail connect so that middle part cutlery has broken line profile.Specifically, middle part sword 242 includes the first sword body the 2421, second sword body 2422 and the 3rd sword body 2423.First sword body 2421 is connected with one end away from chisel edge 23 of front cutting edge 241.Second sword body 2422 is connected with one end away from front cutting edge 241 of the first sword body 2421.3rd sword body 2423 is connected with one end away from the first sword body 2421 of the second sword body 2422.The length of the first sword body 2421 is L1, and the length of the second sword body 2422 is L2, and the length of the 3rd sword body 2423 is L3, L1: L2: L3=3: 2: 1.More, it is preferred that, fluted drill has an axis A1, sets a cross section M being perpendicular to axis A1, and the relative cross section M of front cutting edge 241 has the angle of 35 °~38 °.The first relative cross section M of sword body 2421 has the angle of 22 °~26 °.The second relative cross section M of sword body 2422 has the angle of 12 °~18 °.The 3rd relative cross section M of sword body 2423 has the angle of 10 °~14 °.
Fluted drill of the present utility model is mainly used in processing hole in thin pieces (such as sheet metal or hardboard), arrange based on said structure, this utility model is in use, first chisel edge 23 drills through workpiece, then the front cutting edge 241 on both sides is scraped and is cut out macropore, then is completed reaming further by attached cutting sword 25.There is each other the angle of 72 °~76 ° and the design that length is 2.3~2.6mm of chisel edge based on front cutting edge, fluted drill of the present utility model there is better wearability.And, based on the middle part sword design of broken line profile, this utility model can make hole wall have good surface roughness.
Certainly; this utility model also can have other various embodiments; when without departing substantially from this utility model spirit and essence thereof; those of ordinary skill in the art are when can make various corresponding change and deformation according to this utility model, but these change accordingly and deformation all should belong to the scope of the claims appended by this utility model.

Claims (10)

1. the fluted drill processing hole, including cutter hub, it is characterized in that, described cutter hub has twice spirillum, and twice spirillum crosses at axle center place, cutter hub front end, and form a chisel edge in intersection, having a major cutting edge on every described spirillum together, described major cutting edge includes sword in the middle part of a front cutting edge and, and described front cutting edge is connected with described chisel edge, front cutting edge on twice spirillum has the angle of 72 °~76 ° each other, and the length of described chisel edge is 2.3~2.6mm.
2. fluted drill according to claim 1, it is characterised in that be provided with an attached cutting sword at least one described spirochetal outer rim, described attached cutting sword is relative to the spirochetal hand of spiral horizontally set at its place.
3. fluted drill according to claim 2, it is characterised in that described attached cutting cutlery has the drift angle of 50 °~55 °.
4. fluted drill according to claim 1, it is characterised in that described middle part sword includes multistage sword body, described multistage sword body head and the tail connect so that described middle part cutlery has broken line profile.
5. fluted drill according to claim 4, it is characterised in that described middle part sword includes:
First sword body, is connected with one end away from described chisel edge of described front cutting edge;
Second sword body, is connected with one end away from described front cutting edge of described first sword body;And
3rd sword body, is connected with one end away from described first sword body of described second sword body.
6. fluted drill according to claim 5, it is characterised in that the length of described first sword body is L1, the length of described second sword body is L2, and the length of described 3rd sword body is L3, L1: L2: L3=3: 2: 1.
7. fluted drill according to claim 6, it is characterised in that have an axis, sets a cross section being perpendicular to described axis, and the relatively described cross section of described front cutting edge has the angle of 35 °~38 °.
8. fluted drill according to claim 7, it is characterised in that the described first relatively described cross section of sword body has the angle of 22 °~26 °.
9. fluted drill according to claim 7, it is characterised in that the described second relatively described cross section of sword body has the angle of 12 °~18 °.
10. fluted drill according to claim 7, it is characterised in that the described 3rd relatively described cross section of sword body has the angle of 10 °~14 °.
CN201521029666.6U 2015-12-14 2015-12-14 Fluted drill in processing hole Expired - Fee Related CN205342026U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521029666.6U CN205342026U (en) 2015-12-14 2015-12-14 Fluted drill in processing hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521029666.6U CN205342026U (en) 2015-12-14 2015-12-14 Fluted drill in processing hole

Publications (1)

Publication Number Publication Date
CN205342026U true CN205342026U (en) 2016-06-29

Family

ID=56153206

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201521029666.6U Expired - Fee Related CN205342026U (en) 2015-12-14 2015-12-14 Fluted drill in processing hole

Country Status (1)

Country Link
CN (1) CN205342026U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107262785A (en) * 2017-06-14 2017-10-20 东莞艾瑞克精密工具有限公司 A kind of apex point and the aperture knife tool with apex point

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107262785A (en) * 2017-06-14 2017-10-20 东莞艾瑞克精密工具有限公司 A kind of apex point and the aperture knife tool with apex point
CN107262785B (en) * 2017-06-14 2019-05-17 东莞艾瑞克精密工具有限公司 A kind of apex point and the aperture knife tool with apex point

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160629

Termination date: 20161214