CN104551121A - Corn twist drill - Google Patents

Corn twist drill Download PDF

Info

Publication number
CN104551121A
CN104551121A CN201410839528.8A CN201410839528A CN104551121A CN 104551121 A CN104551121 A CN 104551121A CN 201410839528 A CN201410839528 A CN 201410839528A CN 104551121 A CN104551121 A CN 104551121A
Authority
CN
China
Prior art keywords
drill
corn
fluted drill
cutting edge
chip
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
CN201410839528.8A
Other languages
Chinese (zh)
Inventor
祁长岭
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 YONGPU CARBIDE TOOL Co Ltd
Original Assignee
SUZHOU YONGPU CARBIDE TOOL 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 YONGPU CARBIDE TOOL Co Ltd filed Critical SUZHOU YONGPU CARBIDE TOOL Co Ltd
Priority to CN201410839528.8A priority Critical patent/CN104551121A/en
Publication of CN104551121A publication Critical patent/CN104551121A/en
Pending legal-status Critical Current

Links

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
    • B23B51/00Tools for drilling machines
    • B23B51/06Drills with lubricating or cooling equipment
    • 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 corn twist drill. The corn twist drill comprises a drill bit (1), a neck (2) and a drill handle (3). The corn twist drill is characterized in that the drill bit (1) comprises a drill tip (4) at the top end of the drill bit, side cutting edges (5) connected with the drill tip, and chip discharging grooves (6) positioned among the side cutting edges (5); chip splitting grooves (9) are formed in the side cutting edges (5) and are arranged on the side cutting edges (5) in a clockwise spiral mode; the drill bit (1) internally comprises a spiral hole (8) taking the central line (7) as the rotation axis, and a coolant injection hole (10) connected with the spiral hole (8) is formed at the central line (7) of the drill handle (3). The corn twist drill has the advantages that forming, curling and discharging conditions of chips of the twist drill are improved greatly, vibration is not caused easily, service life of the twist drill is prolonged, and hole processing efficiency is improved.

Description

A kind of corn fluted drill
Technical field
The present invention relates to a kind of corn fluted drill, belong to Cutting Tool Technology Used on NC field.
Background technology
Drilling processing is one of modal processing method of Current mechanical manufacture field, is also machining maximum operation consuming time, occupies very high ratio, apparently higher than Milling Process in metal cutting process operation.On some flexible production line and machining center, drilling process occupies higher ratio.Drilling processing relies on its efficient, economic advantage, plays key effect at production fields such as machinery, electronics.Due to the relative complexity of fluted drill structure and drilling process, wearing and tearing, the damaged form of fluted drill have very large randomness and diversity, and its life dispersivity is very large, are all the basic problems of drilling research all the time.
The Fast Wearing of cutting edge is the key factor of restriction drilling quality and bit life, and chip removal is major influence factors wherein, and studies in the past and carried out at apex point place for the improvement of chip removal effect is many in implementing.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of corn fluted drill, offside cutting blade structure has improved fluted drill chip removal problem.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
A kind of corn fluted drill, comprise drill bit, neck, drillstock, it is characterized in that, the apex point that described drill bit comprises drill end, the side cutting edge be connected with apex point, chip area between the cutting edge of side, described side cutting edge arranges chip dividing groove, and described chip dividing groove is clock wise spirals arrangement on the cutting edge of side; It is the threaded hole of rotating shaft that described drill bit internal comprises with center line, and described drillstock centerline arranges the cooling fluid hand-hole be connected with described threaded hole.
Aforesaid a kind of corn fluted drill, is characterized in that, described fluted drill entirety is carbide alloy.
Aforesaid a kind of corn fluted drill, is characterized in that, described drillstock is staight shank.
Aforesaid a kind of corn fluted drill, is characterized in that, described threaded hole is double helical bore.
Aforesaid a kind of corn fluted drill, is characterized in that, described apex point place apex angle ss is 130 °.
Aforesaid a kind of corn fluted drill, is characterized in that, described side cutting edge pitch angle alpha will is 30 °, is the arrangement of counter-clockwise helical direction.
Aforesaid a kind of corn fluted drill, is characterized in that, described chip dividing groove is invert shape.
The beneficial effect that the present invention reaches: a kind of corn fluted drill of the present invention, adopts carbide alloy material, substantially prolongs cutter life; Adopt inner double helical bore inner-cooled to dispel the heat, can ensure that tool temperature can not be too high, cause bit wear, can chip removal be accelerated simultaneously, prevent the generation of built-up edge, all have beneficial effect to cutter life and workpiece to be machined surface roughness.Side cutting edge is provided with chip dividing groove, makes the chip of cutting become narrow strip; Because side cutting edge has sizable helical angle, chip becomes spiral wound, namely discharges gradually from chip area in working angles; Because the chip of cutting becomes narrow strip, vibration not easily produces.The present invention improves the formation of fluted drill chip, curling and eliminating situation greatly, and not easily produces vibration, extends the life-span of fluted drill, improves hole machined efficiency.
Accompanying drawing explanation
Fig. 1 is a kind of corn fluted drill structural representation;
The implication of Reference numeral in figure: 1-drill bit, 2-neck, 3-drillstock, 4-apex point, 5-side cutting edge, 6-chip area, 7-center line, 8-threaded hole, 10-chip dividing groove, 11-cooling fluid hand-hole, α-side cutting edge helical angle, β-apex point place drift angle, ε-chip dividing groove angle.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
As shown in Figure 1, a kind of corn fluted drill, comprise drill bit 1, neck 2, drillstock 3, it is characterized in that, the apex point 4 that described drill bit 1 comprises drill end, the side cutting edge 5 be connected with apex point, chip area 6 between side cutting edge 5, described side cutting edge 5 arranges chip dividing groove 9, and described chip dividing groove 11 is clock wise spirals arrangement on side cutting edge 5; The threaded hole 8 that it is rotating shaft that described drill bit 1 inside comprises with center line 7, described drillstock 3 center line 7 place arranges the cooling fluid hand-hole 10 be connected with described threaded hole 8.
Described fluted drill entirety is carbide alloy.
Described drillstock 3 is staight shank.
Described threaded hole 8 is double helical bore.
Described apex point 4 place apex angle ss is 130 °.
Described side cutting edge 5 pitch angle alpha will is 30 °, is the arrangement of counter-clockwise helical direction.
Described chip dividing groove 9 is in invert shape, and chip dividing groove angle ε is 90 °, and the angle that namely minimum point of chip dividing groove 11 cross section and two end points of openend form is 90 °.
A kind of corn fluted drill of the present invention, adopts carbide alloy material, substantially prolongs cutter life; Adopt inner double helical bore inner-cooled to dispel the heat, can ensure that tool temperature can not be too high, cause bit wear, can chip removal be accelerated simultaneously, prevent the generation of built-up edge, all have beneficial effect to cutter life and workpiece to be machined surface roughness.Side cutting edge is provided with chip dividing groove, makes the chip of cutting become narrow strip; Because side cutting edge has sizable helical angle, chip becomes spiral wound, namely discharges gradually from chip area in working angles; Because the chip of cutting becomes narrow strip, vibration not easily produces.The present invention improves the formation of fluted drill chip, curling and eliminating situation greatly, and not easily produces vibration, extends the life-span of fluted drill, improves hole machined efficiency.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.

Claims (7)

1. a corn fluted drill, comprise drill bit (1), neck (2), drillstock (3), it is characterized in that, the apex point (4) that described drill bit (1) comprises drill end, the side cutting edge (5) be connected with apex point, be positioned at chip area (6) between side cutting edge (5), described side cutting edge (5) is arranged chip dividing groove (9), described chip dividing groove (11) is in the upper clock wise spirals arrangement of side cutting edge (5); The threaded hole (8) that it is rotating shaft that described drill bit (1) inside comprises with center line (7), described drillstock (3) center line (7) place arranges the cooling fluid hand-hole (10) be connected with described threaded hole (8).
2. a kind of corn fluted drill according to claim 1, is characterized in that, described fluted drill entirety is carbide alloy.
3. a kind of corn fluted drill according to claim 1, is characterized in that, described drillstock (3) is staight shank.
4. a kind of corn fluted drill according to claim 1, is characterized in that, described threaded hole (8) is double helical bore.
5. a kind of corn fluted drill according to claim 1, is characterized in that, described apex point (4) place apex angle ss is 130 °.
6. a kind of corn fluted drill according to claim 1, is characterized in that, described side cutting edge (5) pitch angle alpha will is 30 °, is the arrangement of counter-clockwise helical direction.
7. a kind of corn fluted drill according to claim 1, is characterized in that, described chip dividing groove (9) is in invert shape.
CN201410839528.8A 2014-12-30 2014-12-30 Corn twist drill Pending CN104551121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410839528.8A CN104551121A (en) 2014-12-30 2014-12-30 Corn twist drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410839528.8A CN104551121A (en) 2014-12-30 2014-12-30 Corn twist drill

Publications (1)

Publication Number Publication Date
CN104551121A true CN104551121A (en) 2015-04-29

Family

ID=53068774

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410839528.8A Pending CN104551121A (en) 2014-12-30 2014-12-30 Corn twist drill

Country Status (1)

Country Link
CN (1) CN104551121A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107008951A (en) * 2017-04-21 2017-08-04 株洲钻石切削刀具股份有限公司 A kind of drill reamer

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1221386A (en) * 1969-08-22 1971-02-03 Aackersberg Mortensen Improvements in and relating to twist drills
US7575401B1 (en) * 2004-11-18 2009-08-18 Precorp, Inc. PCD drill for composite materials
CN101716691A (en) * 2010-01-03 2010-06-02 阿诺(苏州)刀具有限公司 Active-type chip-breaking drill bit
CN202278228U (en) * 2011-10-26 2012-06-20 株洲钻石切削刀具股份有限公司 Integral twist drill for processing titanium alloy
CN203459719U (en) * 2013-08-28 2014-03-05 天工爱和特钢有限公司 Chip separating drill bit
CN204018808U (en) * 2014-08-14 2014-12-17 武汉泰尔斯刀具有限公司 A kind of drill bit for deep hole processing
CN204396997U (en) * 2014-12-30 2015-06-17 苏州用朴合金工具有限公司 A kind of corn fluted drill

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1221386A (en) * 1969-08-22 1971-02-03 Aackersberg Mortensen Improvements in and relating to twist drills
US7575401B1 (en) * 2004-11-18 2009-08-18 Precorp, Inc. PCD drill for composite materials
CN101716691A (en) * 2010-01-03 2010-06-02 阿诺(苏州)刀具有限公司 Active-type chip-breaking drill bit
CN202278228U (en) * 2011-10-26 2012-06-20 株洲钻石切削刀具股份有限公司 Integral twist drill for processing titanium alloy
CN203459719U (en) * 2013-08-28 2014-03-05 天工爱和特钢有限公司 Chip separating drill bit
CN204018808U (en) * 2014-08-14 2014-12-17 武汉泰尔斯刀具有限公司 A kind of drill bit for deep hole processing
CN204396997U (en) * 2014-12-30 2015-06-17 苏州用朴合金工具有限公司 A kind of corn fluted drill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107008951A (en) * 2017-04-21 2017-08-04 株洲钻石切削刀具股份有限公司 A kind of drill reamer
CN107008951B (en) * 2017-04-21 2019-10-29 株洲钻石切削刀具股份有限公司 A kind of drill reamer

Similar Documents

Publication Publication Date Title
US10118232B2 (en) High-speed precision interrupted ultrasonic vibration cutting method
US4721421A (en) Cutting tool with chip breakers
CN1695851B (en) Turning insert
KR101818807B1 (en) Spirally-fed drilling and milling cutter
US7367758B2 (en) Ceramic bit for high speed drilling
JPWO2005102572A1 (en) Ball end mill
JP5958277B2 (en) End mill with coolant hole
JP5194637B2 (en) End mill
KR20140138759A (en) Drill
EP3037199B1 (en) Drilling and milling cutter with disposable blade
JP2011514263A (en) Spiral insertion byte
JP2006198767A (en) Milling cutter tool
TW201641190A (en) Connection screw thread structure of cutting tool
CN108472745B (en) Drill bit with chip breaker and method for laser cutting chip breaker in drill bit
US3093850A (en) Thread chasers having the last tooth free of flank contact rearwardly of the thread crest cut thereby
US20080152438A1 (en) Ballnose end mill
CN101716691B (en) Active-type chip-breaking drill bit
CN105364153B (en) A kind of square end mill
JP2009056559A (en) Ball end mill
EP3037197A1 (en) Drill
KR20100103359A (en) Drill
US1499584A (en) Tool for drilling or boring metals
CN108098255A (en) A kind of TA15 titanium alloys frame class parts machining process
US20110033251A1 (en) Rotary cutting tool with reverse chipbreaker pattern
WO2012141194A1 (en) Drill

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20150429