CN204953985U - Twist drill - Google Patents

Twist drill Download PDF

Info

Publication number
CN204953985U
CN204953985U CN201520649673.XU CN201520649673U CN204953985U CN 204953985 U CN204953985 U CN 204953985U CN 201520649673 U CN201520649673 U CN 201520649673U CN 204953985 U CN204953985 U CN 204953985U
Authority
CN
China
Prior art keywords
thin groove
chisel edge
repaiied
edge
cutter body
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
CN201520649673.XU
Other languages
Chinese (zh)
Inventor
朱冬伟
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.)
ZHEJIANG XINXING TOOL CO Ltd
Original Assignee
ZHEJIANG XINXING 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 ZHEJIANG XINXING TOOL CO Ltd filed Critical ZHEJIANG XINXING TOOL CO Ltd
Priority to CN201520649673.XU priority Critical patent/CN204953985U/en
Application granted granted Critical
Publication of CN204953985U publication Critical patent/CN204953985U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a twist drill is applicable to the spot facing work in the machining trade. It is reasonable inadequately that thin groove structural design is repaiied to twist drill's chisel edge in the existing market, and the life during continuity of operation is poor, and the cutting resistance is big, the chip removal not smooth. The utility model discloses a cutter body of handle and fried dough twist form, the external diameter of handle and the external diameter of cutter body equal, the one end and the handle of cutter body are fixed, and the other end of this cutter body is provided with main cutting blade and back knife face, and the outer wall of this cutter body is provided with the chip pocket, and its characteristics lie in: the other end of cutter body still is provided with to be arranged in sending the piece guide to the chisel edge of chip pocket repaiies thin groove, the chisel edge is repaiied and is provided with the chisel edge on the thin groove and repaiies thin groove rake face, the common built -up edge that is used for improving the blade sharpness that forms of thin groove rake face and main cutting blade and back knife face is repaiied to the chisel edge. The utility model has the advantages of reasonable structure design, the cutting resistance is little, is favorable to the chip removal, is favorable to improving central blade abrasion resistance.

Description

Fluted drill
Technical field
The utility model relates to a kind of five metals machining tool, especially relates to a kind of fluted drill, is applicable to the hole machined in mechanical processing industry.
Background technology
The chisel edge of fluted drill repaiies thin groove structural design not rationally in the market, and service life when working continuously is poor, and cutting resistance is large, chip removal is not smooth, the rotating speed particularly close to center low (center rotating speed zero), and cutting edge is easy to wear, overall performance is poor, brings inconvenience to use.
Utility model content
The purpose of this utility model is to overcome above shortcomings in prior art, and provides a kind of reasonable in design, and cutting resistance is little, is conducive to chip removal, is conducive to the fluted drill of raising center tool edge wear-proof damage property.
The technical scheme in the invention for solving the above technical problem is: this fluted drill comprises the cutter hub of handle and twisted shape, the external diameter of described handle is equal with the external diameter of cutter hub, one end and the handle of described cutter hub are fixed, the other end of this cutter hub is provided with major cutting edge and rear knife face, the outer wall of this cutter hub is provided with chip pocket, its design feature is: the other end of described cutter hub is also provided with repaiies thin groove for being guided by chip to cause to the chisel edge in chip pocket, described chisel edge is repaiied and thin groove is provided with chisel edge is repaiied thin groove rake face, described chisel edge is repaiied thin groove rake face and major cutting edge and rear knife face and is jointly formed built-up edge for improving cutting edge sharpness.
As preferably, chisel edge described in the utility model repaiies the R angle thin groove is provided with for changing chip shapes.And the grooved that R angle is formed is arranged to similar taper shape, chisel edge place circular arc is less than and chip pocket junction circular arc.
As preferably, chisel edge described in the utility model is repaiied thin groove and is exceeded opposite chisel edge at the intersection of rear knife face and repair the intersection of thin groove at rear knife face.
As preferably, the chisel edge described in the utility model angle repaiied between thin groove and the axis of fluted drill is 32 ~ 37 degree.
As preferably, chisel edge described in the utility model repaiies the size R=0.2* outside diameter d ~ 0.3* outside diameter d at the R angle of thin groove.
The utility model compared with prior art, has the following advantages and effect: reasonable in design, is beneficial to chip removal, improves center tool edge wear-proof damage property, reduces cutting resistance.When drilling rail, major cutting edge and afterwards knife face and chisel edge repair thin groove rake face place, the built-up edge produced can improve the sharpness of cutting edge, and the R angle that the iron filings boring the generation of core place repair thin groove by chisel edge changes shape, repair thin groove and axis angle by chisel edge again, guide and cause in chip pocket, be more conducive to the eliminating of iron filings, and chisel edge to repair thin groove for glitch-free working angles be the decisive region affecting the life-span, extend service life.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of fluted drill in the utility model embodiment.
Fig. 2 is the structural representation after the cutter hub front portion of fluted drill in the utility model embodiment is amplified.
Fig. 3 be Fig. 1 overlook structure for amplifying schematic diagram, and mark has chisel edge to repair thin groove exceedes opposite chisel edge at the intersection of rear knife face and repair the intersection of thin groove at rear knife face.
In Fig. 4 the utility model embodiment, chisel edge repaiies the structural representation of the R angle square cun of thin groove.
In Fig. 5 the utility model embodiment, chisel edge repaiies the structural representation of thin groove and axis angle.
Detailed description of the invention
Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that the utility model is not limited to following examples to explanation of the present utility model.
Embodiment.
See Fig. 1 to Fig. 5, the fluted drill of the present embodiment comprises the cutter hub 1 of handle 2 and twisted shape, the external diameter of handle 2 is equal with the external diameter of cutter hub 1, one end and the handle 2 of cutter hub 1 are fixed, the other end of this cutter hub 1 is provided with major cutting edge and rear knife face, the outer wall of this cutter hub 1 is provided with chip pocket, the other end of cutter hub 1 is also provided with repaiies thin groove 5 for being guided by chip to cause to the chisel edge in chip pocket, chisel edge is repaiied and thin groove 5 is provided with chisel edge is repaiied thin groove rake face 4, and chisel edge is repaiied thin groove rake face 4 and major cutting edge and rear knife face and jointly formed built-up edge for improving cutting edge sharpness.
Chisel edge in the present embodiment is repaiied the chisel edge be provided with for changing chip shapes on thin groove 5 and is repaiied the R angle of thin groove 5, and the size that chisel edge repaiies the R angle of thin groove 5 is generally R=0.2* outside diameter d ~ 0.3* outside diameter d, and wherein outside diameter d refers to fried dough twist drill lip circle external diameter.
Chisel edge in the present embodiment angle repaiied between thin groove 5 and the axis 3 of fluted drill is 32 ~ 37 degree.Fluted drill in the present embodiment adopts the chisel edge of orthodrome to repair thin groove 5 usually.
In addition, it should be noted that, the specific embodiment described in this description, the shape, institute's title of being named etc. of its parts and components can be different, and the above content described in this description is only to the explanation of the utility model structure example.The equivalence change that structure, feature and principle described in all foundation the utility model inventional idea are done or simple change, be included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.

Claims (5)

1. a fluted drill, comprise the cutter hub of handle and twisted shape, the external diameter of described handle is equal with the external diameter of cutter hub, one end and the handle of described cutter hub are fixed, the other end of this cutter hub is provided with major cutting edge and rear knife face, the outer wall of this cutter hub is provided with chip pocket, it is characterized in that: the other end of described cutter hub is also provided with repaiies thin groove for being guided by chip to cause to the chisel edge in chip pocket, described chisel edge is repaiied and thin groove is provided with chisel edge is repaiied thin groove rake face, and described chisel edge is repaiied thin groove rake face and major cutting edge and rear knife face and jointly formed built-up edge for improving cutting edge sharpness.
2. fluted drill according to claim 1, is characterized in that: described chisel edge repaiies the R angle thin groove is provided with for changing chip shapes.
3. fluted drill according to claim 1, is characterized in that: described chisel edge is repaiied thin groove and exceeded opposite chisel edge at the intersection of rear knife face and repair the intersection of thin groove at rear knife face.
4. fluted drill according to claim 1, is characterized in that: the described chisel edge angle repaiied between thin groove and the axis of fluted drill is 32 ~ 37 degree.
5. fluted drill according to claim 2, is characterized in that: described chisel edge repaiies the size R=0.2* outside diameter d ~ 0.3* outside diameter d at the R angle of thin groove.
CN201520649673.XU 2015-08-26 2015-08-26 Twist drill Expired - Fee Related CN204953985U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520649673.XU CN204953985U (en) 2015-08-26 2015-08-26 Twist drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520649673.XU CN204953985U (en) 2015-08-26 2015-08-26 Twist drill

Publications (1)

Publication Number Publication Date
CN204953985U true CN204953985U (en) 2016-01-13

Family

ID=55049082

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520649673.XU Expired - Fee Related CN204953985U (en) 2015-08-26 2015-08-26 Twist drill

Country Status (1)

Country Link
CN (1) CN204953985U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017136966A1 (en) * 2016-02-14 2017-08-17 上海钰工机电有限公司 High efficiency step-structured twist drill
US11007583B2 (en) 2016-02-14 2021-05-18 Hongjia Wang Twist drill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017136966A1 (en) * 2016-02-14 2017-08-17 上海钰工机电有限公司 High efficiency step-structured twist drill
US11007583B2 (en) 2016-02-14 2021-05-18 Hongjia Wang Twist drill

Similar Documents

Publication Publication Date Title
CN204953985U (en) Twist drill
CN203109260U (en) Turning tool for groove machining on automobile engine
CN205551557U (en) High -efficient fluted drill of layering drilling
CN201079853Y (en) Hard alloy countersink drill
CN202639436U (en) Chamfering twist drill
CN201030447Y (en) Highly effective auger-drill head
CN203437718U (en) Vibration-resistant high-speed indexable milling cutter
CN204430444U (en) Single-blade chip breaking extended type reamer
CN204953986U (en) Solid rail bores
CN210080747U (en) Strong cutting-off tool
CN204277007U (en) A kind of drill bit of machining titanium alloy
CN203460287U (en) Novel wood flat bit set
CN202506878U (en) Pointed end positioning twist drill
CN204248042U (en) Carburizing steel spiral bit
CN201889453U (en) Turning tool for processing PVC pipe
CN205764069U (en) A kind of high accuracy Double-margin twist drill
CN201632672U (en) Slot cutter for processing compressor
CN205342026U (en) Fluted drill in processing hole
CN205437180U (en) A boring cutter that is used for processing oil pump fuel tap valve opening
CN204867564U (en) A fluted drill for processing difficult chip breaking material
CN203304711U (en) High-efficiency high-precision pre-grinding hob
CN202910406U (en) Ultra-thin alloy steel-cutting saw blade for machine tool
CN209453925U (en) A kind of staight shank glass drill
CN214684407U (en) X-shaped drill point edge drill bit
CN203679434U (en) Reamer

Legal Events

Date Code Title Description
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: 20160113

Termination date: 20190826