CN104384577A - Multi-operating-condition twist drill bit - Google Patents

Multi-operating-condition twist drill bit Download PDF

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Publication number
CN104384577A
CN104384577A CN201410627489.5A CN201410627489A CN104384577A CN 104384577 A CN104384577 A CN 104384577A CN 201410627489 A CN201410627489 A CN 201410627489A CN 104384577 A CN104384577 A CN 104384577A
Authority
CN
China
Prior art keywords
point
head
bit
knife
cutting
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.)
Pending
Application number
CN201410627489.5A
Other languages
Chinese (zh)
Inventor
刘伟
张红芹
蒋长青
金章斌
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.)
SUZHOU AHNO CUTTING TOOL TECHNOLOGY Co Ltd
Original Assignee
SUZHOU AHNO CUTTING TOOL TECHNOLOGY Co Ltd
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 SUZHOU AHNO CUTTING TOOL TECHNOLOGY Co Ltd filed Critical SUZHOU AHNO CUTTING TOOL TECHNOLOGY Co Ltd
Priority to CN201410627489.5A priority Critical patent/CN104384577A/en
Publication of CN104384577A publication Critical patent/CN104384577A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B51/00Tools for drilling machines
    • B23B51/02Twist drills
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2251/00Details of tools for drilling machines
    • B23B2251/12Cross sectional views of the cutting edges
    • B23B2251/127Sharp cutting edges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2251/00Details of tools for drilling machines
    • B23B2251/24Overall form of drilling tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2251/00Details of tools for drilling machines
    • B23B2251/40Flutes, i.e. chip conveying grooves
    • B23B2251/408Spiral grooves

Abstract

The invention discloses a multi-operating-condition twist drill bit, which comprises a head part, a handle part and a neck part, wherein the neck part is positioned between the head part and the handle part, a spiral chip discharge groove is formed in the neck part, the head part and the chip discharging groove form a main cutting edge at a public boundary part of the end surfaces, the outer side of the head part is provided with two spiral edges, the chip discharge groove is formed in a gap formed between the two edges, a cutter point is formed in the crossing point part of the main cutting edge and the edges, a cutter point platform is arranged on the cutter point, and the platform height of the cutter point platform does not exceed a quarter of the diameter of the drill bit. The cutter point platform is arranged, so the cutting front angle of the cutter point and the nearby cutting edge is equivalently reduced. The chip cutting plastic deformation at the cutter point part is improved, and the chip is easy to break. Therefore, the embodiment is particularly applicable to the condition of a narrow cut chip under the hole enlarging condition, and meanwhile, the solid drilling and cutting can also be realized. In addition, when the cutting speed, the cutting and the material hardness are proper, higher surface quality and dimension precision can be obtained, and the function of enlarging instead of reaming is realized.

Description

A kind of multi-state spiral bit
Technical field
The present invention relates to the technical field of high-speed and high-efficiency cutting metal cutting tool, be specifically related to a kind of multi-state spiral bit for reaming and solid drilling, be especially applicable to little surplus reaming and avoid the formation of the occasion that chip is wound around.
Background technology
In solid carbide drill processing, except solid drilling, also often can run into the situation of reaming.First, because solid carbide drill cutting speed is very high, the reaming not contacting workpiece at chisel edge adds man-hour, very easily vibrations occurs and causes drill bit tipping or fracture.Secondly, because the radial slack of reaming is different, when chip is thinner, chip breaking is very difficult, and often twining bits is not suitable for continuous seepage.In addition, rotating speed is high, and to represent cutting speed high, cuts heat large.And drill bit is processed usually under semi-closed state, heat in metal cutting is difficult to shed.Under these conditions, chip is by temperatures involved and soften, and plasticity enhancing, is more difficult to chip breaking, has a strong impact on normally carrying out of product quality and boring.
Therefore, the present inventor needs a kind of new technology of design badly to improve its problem.
Summary of the invention
The present invention aims to provide a kind of applicable reaming occasion, can also take into account the multi-state spiral bit of solid drilling simultaneously.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of multi-state spiral bit, comprise head, shank and the neck between head and shank, described head, neck and shank are the coaxial clyinders centered by same central axis, described head and described neck are provided with spiral helicine chip area, described head and described chip area form a main cutting edge at end face common boundary place, the outside of described head is provided with two spiral seamed edges, gap between two described seamed edges forms described chip area, the point of intersection of described seamed edge and described main cutting edge is formed with a point of a knife, described point of a knife arranges a point of a knife platform, the podium level of described point of a knife platform is no more than 1/4th of bit diameter.
Preferably, the width of described point of a knife platform is 3-5 drill bit feed of every rotation doubly.
Preferably, the inclination angle of described point of a knife platform is set to 10 °-20 °.
Preferably, the inclination angle of described point of a knife platform is set to 15 °.
Preferably, the angle of described point of a knife platform is set to 20 °-30 °.
Preferably, the intersection place of described head two end faces is formed with a chisel edge.
Preferably, described shank is cylindrical structure, and outside handle of a knife is clamped in outside described shank to drive drill bit rotational.
Preferably, described main cutting edge forms an inner edge near bit central place, and described inner edge is provided with anterior angle.
Adopt technique scheme, the present invention at least comprises following beneficial effect:
Multi-state spiral bit of the present invention, owing to having point of a knife platform, is equivalent to the cutting anterior angle decreasing point of a knife and neighbouring cutting edge.The chip plastic deformation at point of a knife place increases, and chip breaking is comparatively easy.Therefore the present embodiment is particularly suitable for the very narrow situation of chip under reaming condition, can also take into account solid drilling simultaneously.And when cutting speed, feeding and material hardness are suitable, higher surface quality and dimensional accuracy can be obtained, realize the function expanding generation hinge.
Accompanying drawing explanation
Fig. 1 is the front view of multi-state spiral bit of the present invention;
Fig. 2 is the left view of the multi-state spiral bit shown in Fig. 1;
Fig. 3 is the head schematic diagram of multi-state spiral bit of the present invention;
Fig. 4 is the head schematic diagram of multi-state spiral bit of the present invention;
Fig. 5 is the sectional view of head along A-A line of the spiral bit of multi-state shown in Fig. 4.
Wherein: 1. head, 2. neck, 3. shank, 4. chip area, 5. main cutting edge, 6. inner edge, 7. chisel edge, 8. seamed edge, 9. point of a knife, 10. point of a knife platform.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figures 1 to 5, for a kind of multi-state spiral bit according to the invention, comprise head 1, shank 3 and the neck between head 1 and shank 32, described head 1, neck 2 and shank 3 are the coaxial clyinders centered by same central axis, described head 1 and described neck 2 are provided with spiral helicine chip area 4, described head 1 and described chip area 4 form a main cutting edge 5 at end face common boundary place, and described main cutting edge 5, for boring, is the main function structure of drill bit.The outside of described head 1 is provided with two spiral seamed edges 8, gap between two described seamed edges 8 forms described chip area 4, described seamed edge 8 is formed with a point of a knife 9 with the point of intersection of described main cutting edge 5, described point of a knife 9 arranges a point of a knife platform 10, and the podium level of described point of a knife platform 10 is no more than 1/4th of bit diameter.In accompanying drawing 4, K is the width of described point of a knife platform 10.
Preferably, the width of described point of a knife platform 10 is 3-5 drill bit feed of every rotation doubly.The width of described point of a knife platform 10 can adjust accordingly according to the cutting ability of machined material and change, and the present embodiment is not construed as limiting this, and in accompanying drawing 5, T is the width of described point of a knife platform 10, and those skilled in the art should know.
Preferably, the inclination angle of described point of a knife platform 10 is set to 10 °-20 °.More preferably, the inclination angle of described point of a knife platform 10 is set to 15 °.The inclination angle of described point of a knife platform 10 can adjust accordingly according to drill bit seamed edge 8 width, preferably adopts the inclination angle of 15 ° in the present embodiment.Now, seamed edge 8 width at point of a knife 9 place is not less than 1/3 of former width in principle.In accompanying drawing 4, b is the inclination angle of described point of a knife platform 10.
Preferably, the angle of described point of a knife platform 10 is set to 20 °-30 °.The width of described point of a knife platform 10 and angle can adjust accordingly according to the cutting ability of machined material and cutting parameter and change, the present embodiment is not construed as limiting this, those skilled in the art should know, and in accompanying drawing 5, a is the angle of described point of a knife platform 10.
Preferably, the intersection place of described head 1 two end faces is formed with a chisel edge 7, and described chisel edge 7 is mainly used in head 1 intensity improving drill bit.
Preferably, described shank 3 is cylindrical structure, and outside handle of a knife is clamped in outside described shank 3 to drive drill bit rotational.Shank 3 described in the present embodiment is one section of cylinder that circle precision is higher, clamps described shank 3 to transmit machine power during use by handle of a knife, makes cutter rotate and possess cutting power.
Preferably, described main cutting edge 5 forms an inner edge 6 near bit central place, and described inner edge 6 is provided with anterior angle, and its Main Function possesses cutting power and reduces drilling resistance.
Multi-state spiral bit described in the present embodiment, owing to having point of a knife platform 10, is equivalent to the cutting anterior angle decreasing point of a knife 9 and neighbouring cutting edge.The chip plastic deformation at point of a knife 9 place increases, and chip breaking is comparatively easy.Therefore the present embodiment is particularly suitable for the very narrow situation of chip under reaming condition, can also take into account solid drilling simultaneously.And when cutting speed, feeding and material hardness are suitable, higher surface quality and dimensional accuracy can be obtained, realize the function expanding generation hinge.
Above one embodiment of the present of invention have been described in detail, but described content being only the preferred embodiment of the invention, can not being considered to for limiting practical range of the present invention.All any equivalent variations done according to the present patent application scope, all should still be within patent covering scope of the present invention.

Claims (8)

1. a multi-state spiral bit, it is characterized in that: comprise head, shank and the neck between head and shank, described head, neck and shank are the coaxial clyinders centered by same central axis, described head and described neck are provided with spiral helicine chip area, described head and described chip area form a main cutting edge at end face common boundary place, the outside of described head is provided with two spiral seamed edges, gap between two described seamed edges forms described chip area, the point of intersection of described seamed edge and described main cutting edge is formed with a point of a knife, described point of a knife arranges a point of a knife platform, the podium level of described point of a knife platform is no more than 1/4th of bit diameter.
2. multi-state spiral bit as claimed in claim 1, is characterized in that: the width of described point of a knife platform is 3-5 drill bit feed of every rotation doubly.
3. multi-state spiral bit as claimed in claim 2, is characterized in that: the inclination angle of described point of a knife platform is set to 10 °-20 °.
4. multi-state spiral bit as claimed in claim 3, is characterized in that: the inclination angle of described point of a knife platform is set to 15 °.
5. the multi-state spiral bit as described in as arbitrary in claim 1-4, is characterized in that: the angle of described point of a knife platform is set to 20 °-30 °.
6. the multi-state spiral bit as described in as arbitrary in claim 1-5, is characterized in that: the intersection place of described head two end faces is formed with a chisel edge.
7. the multi-state spiral bit as described in as arbitrary in claim 1-6, it is characterized in that: described shank is cylindrical structure, outside handle of a knife is clamped in outside described shank to drive drill bit rotational.
8. the multi-state spiral bit as described in as arbitrary in claim 1-7, it is characterized in that: described main cutting edge forms an inner edge near bit central place, described inner edge is provided with anterior angle.
CN201410627489.5A 2014-11-10 2014-11-10 Multi-operating-condition twist drill bit Pending CN104384577A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410627489.5A CN104384577A (en) 2014-11-10 2014-11-10 Multi-operating-condition twist drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410627489.5A CN104384577A (en) 2014-11-10 2014-11-10 Multi-operating-condition twist drill bit

Publications (1)

Publication Number Publication Date
CN104384577A true CN104384577A (en) 2015-03-04

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Country Status (1)

Country Link
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101716691A (en) * 2010-01-03 2010-06-02 阿诺(苏州)刀具有限公司 Active-type chip-breaking drill bit
CN202239818U (en) * 2011-07-11 2012-05-30 深圳市航天精密刀具有限公司 Hard alloy drill bit
DE102011001824A1 (en) * 2011-04-05 2012-10-11 Gühring Ohg Drilling tool for stage tool, has main cutting edge for machining workpiece, guide chamfer for guiding drilling tool during machining of workpiece, chip flute for discharging chipping-cooling-or lubricating medium
CN202655694U (en) * 2012-07-30 2013-01-09 乐清市南方硬质合金有限公司 E2-type twist drill and straight fluted drill with cutting angle
KR20130032671A (en) * 2011-09-23 2013-04-02 대구텍 유한회사 Drilling tool for composite material
CN103128346A (en) * 2013-03-19 2013-06-05 大连远东企业集团有限公司 Twist drill with spiral cutting back tool
CN203316795U (en) * 2013-07-01 2013-12-04 胡建峰 Multi-cutting-edge high-feeding drill bit made of hard alloy
WO2014136575A1 (en) * 2013-03-08 2014-09-12 福井県 Drill for composite material, and machining method and machining device using same
CN204194895U (en) * 2014-11-10 2015-03-11 苏州阿诺精密切削技术股份有限公司 A kind of multi-state spiral bit

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101716691A (en) * 2010-01-03 2010-06-02 阿诺(苏州)刀具有限公司 Active-type chip-breaking drill bit
DE102011001824A1 (en) * 2011-04-05 2012-10-11 Gühring Ohg Drilling tool for stage tool, has main cutting edge for machining workpiece, guide chamfer for guiding drilling tool during machining of workpiece, chip flute for discharging chipping-cooling-or lubricating medium
CN202239818U (en) * 2011-07-11 2012-05-30 深圳市航天精密刀具有限公司 Hard alloy drill bit
KR20130032671A (en) * 2011-09-23 2013-04-02 대구텍 유한회사 Drilling tool for composite material
CN202655694U (en) * 2012-07-30 2013-01-09 乐清市南方硬质合金有限公司 E2-type twist drill and straight fluted drill with cutting angle
WO2014136575A1 (en) * 2013-03-08 2014-09-12 福井県 Drill for composite material, and machining method and machining device using same
CN103128346A (en) * 2013-03-19 2013-06-05 大连远东企业集团有限公司 Twist drill with spiral cutting back tool
CN203316795U (en) * 2013-07-01 2013-12-04 胡建峰 Multi-cutting-edge high-feeding drill bit made of hard alloy
CN204194895U (en) * 2014-11-10 2015-03-11 苏州阿诺精密切削技术股份有限公司 A kind of multi-state spiral bit

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Address after: Suzhou City, Jiangsu province 215122 Industrial Park Kuatang subarea Baoda Road No. 8

Applicant after: Suzhou Ahno Precision Cutting Technology Co., Ltd.

Address before: Po Road Industrial Park in Suzhou city of Jiangsu Province, No. 8 215122

Applicant before: Suzhou Ahno Cutting Tool Technology Co., Ltd.

RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20150304