CN204108414U - Synergy fluted drill structure - Google Patents

Synergy fluted drill structure Download PDF

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Publication number
CN204108414U
CN204108414U CN201420482259.XU CN201420482259U CN204108414U CN 204108414 U CN204108414 U CN 204108414U CN 201420482259 U CN201420482259 U CN 201420482259U CN 204108414 U CN204108414 U CN 204108414U
Authority
CN
China
Prior art keywords
groove
fluted drill
fixing hole
projection
spiral bit
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
CN201420482259.XU
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Chinese (zh)
Inventor
于胜平
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.)
HARBIN DONG'AN LIFENG CUTTER CO Ltd
Original Assignee
HARBIN DONG'AN LIFENG CUTTER 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 HARBIN DONG'AN LIFENG CUTTER CO Ltd filed Critical HARBIN DONG'AN LIFENG CUTTER CO Ltd
Priority to CN201420482259.XU priority Critical patent/CN204108414U/en
Application granted granted Critical
Publication of CN204108414U publication Critical patent/CN204108414U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses synergy fluted drill structure, relate to fluted drill structure, be specifically related to a kind of fluted drill in order to machining titanium alloy.Comprise spiral bit and handle of a knife, one end of spiral bit is chip head, and the shape of chip head is conical; The other end of spiral bit is provided with the projection of triangular prism shape, is arc transition between fluted drill end and projection; One end of handle of a knife is provided with the groove of triangular prism; Projection and groove are all evenly distributed with three fixing holes; Projection is inserted in groove, and the fixing hole position on protruding and groove coincides, and be provided with pin in the fixing hole of projection and groove, the fixing hole place of groove is fixed with screw by screw thread, and lock fixes in fixing hole by screw.The utility model solves the problems such as the fluted drill working (machining) efficiency existed in prior art is low, quick abrasion, easy waste material.

Description

Synergy fluted drill structure
Technical field
The utility model relates to fluted drill structure, is specifically related to a kind of fluted drill in order to machining titanium alloy.
Background technology
Fluted drill is with the instrument of the circular hole of drilling workpiece by the rotary cutting of its relative fixed axis.Be similar to fried dough twist because of its chip pocket curl and gain the name.Helicla flute has 2 grooves, 3 grooves or more groove, but the most common with 2 grooves.Fluted drill can be clamped on manual, electronic Handheld drill instrument or drilling machine, milling machine, lathe and even machining center and use.Drill bit material is generally high-speed tool steel or carbide alloy.
Along with the extensive use of titanium alloy, titanium alloy has heat conduction, temperature diffusivity is little, and chip temperature is high, and chip deformation coefficient is little, and the cutting force in unit are is large.Due to shortcomings such as above characteristic cause in process, and tool sharpening efficiency is low, and tool wear is fast.
Meanwhile, drill bit and the handle of a knife of fluted drill of the prior art are structure as a whole, and during bit damage, one-piece parts is all cancelled, and wastes material.
Summary of the invention
The utility model provides synergy fluted drill structure, solves the problems such as the fluted drill working (machining) efficiency existed in prior art is low, quick abrasion, easy waste material.
For solving the problem, the utility model adopts following technical scheme: synergy fluted drill structure, comprises spiral bit 2 and handle of a knife 3, fluted drill) one end of head is chip 1, the shape of chip 1 is conical; The other end that fluted drill is 2 is provided with the projection 4 of triangular prism shape, is arc transition between fluted drill 2 end and protruding 4; One end of handle of a knife 3 is provided with the groove 5 of triangular prism; Projection 4 and groove 5 are all evenly distributed with three fixing holes; Protruding 4 are inserted in groove 5, protruding 4 and groove 5 on fixing hole position coincide, protruding 4 and groove 5 fixing hole in be provided with pin 7, the fixing hole place of groove 5 is fixed with screw 6 by screw thread, and pin 7 is locked in fixing hole by screw 6.
The helical angle size of spiral bit 2 is 20-24 degree; The conical cone angle of chip 1 is 138-142 degree; Preferably, the helical angle size of spiral bit 2 is 21-23 degree; The conical cone angle of chip 1 is 139-141 degree.
Between the edge, junction of spiral bit 2 and handle of a knife 3 and the central shaft of spiral bit 2, angle is 28-32 degree; Preferably, between the edge, junction of spiral bit 2 and handle of a knife 3 and the central shaft of spiral bit 2, angle is 29-31 degree.
The outermost diameter of spiral bit 2 is 1.6-1.7 millimeter; Preferably, the outermost diameter of spiral bit 2 is 1.62-1.68 millimeter.
Advantage of the present utility model: the utility model selects the best angle of fluted drill by lot of experimental data, solves the difficult processing problems of titanium alloy small diameter drill bit, adds the working (machining) efficiency of fluted drill; The utility model utilizes numerical control tool grinder and special type emery wheel to process the drill bit of applicable machining titanium alloy, decreases the wearing and tearing to fluted drill; Drill bit of the present utility model and handle of a knife adopt Split type structure, and when drill bit is damaged, more bit change, prevents the phenomenon of waste.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is chip head left view in Fig. 1;
Fig. 3 is drill bit of the present utility model and handle of a knife constitutional diagram;
Fig. 4 is A-A sectional view in Fig. 3.
Symbol description in figure: 1 be handle of a knife for chip head, 2 be spiral bit, 3,4 for protruding, 5 be groove, 6 be screw, 7 be pin.
Detailed description of the invention
By best embodiment, the utility model is described in detail below .
As Figure 1-4, synergy fluted drill structure, comprises spiral bit 2 and handle of a knife 3, fluted drill) one end of head is chip 1, the shape of chip 1 is conical; The other end that fluted drill is 2 is provided with the projection 4 of triangular prism shape, is arc transition between fluted drill 2 end and protruding 4; One end of handle of a knife 3 is provided with the groove 5 of triangular prism; Projection 4 and groove 5 are all evenly distributed with three fixing holes; Protruding 4 are inserted in groove 5, protruding 4 and groove 5 on fixing hole position coincide, protruding 4 and groove 5 fixing hole in be provided with pin 7, the fixing hole place of groove 5 is fixed with screw 6 by screw thread, and pin 7 is locked in fixing hole by screw 6.
Drill bit of the present utility model and handle of a knife adopt split-type structural, are inserted in the groove of handle of a knife by the projection of drill bit, insert pin in order to fixed lobe and groove in the fixing hole in projection and groove, and pin outer end is screwed pin and prevents it from sliding.When drill bit is damaged, only more bit change, has saved material, has prevented the generation of wasting phenomenon.
Fluted drill of the present utility model adopts high-speed steel to be material, and high-speed steel is a kind of tool steel with high rigidity, high-wearing feature and high-fire resistance, also known as high-speed tool steel or high-speed steel, is commonly called as Bai Gang.The processing performance of high-speed steel is good, and intensity and toughness are worked good, and is therefore mainly used to manufacture complicated thin sword and impact-resistant metal cutting tool, also can manufacture high-temperature bearing and cold extrusion die etc.Except the high-speed steel produced with method of smelting, there is again PM HSS in the sixties in 20th century later, and its advantage is that of avoiding smelting process and produces the carbide segregation that causes and cause mechanical performance to reduce and heat treatment deformation.Adopt carbide alloy effectively to prevent fluted drill to be damaged, and improve its service life.
The utility model is transformed existing fluted drill, through being experimental implementation in a large number, draws following parameter:
The helical angle size of spiral bit 2 is 20-24 degree; The conical cone angle of chip 1 is 138-142 degree; The scheme that optimum is chosen is, the helical angle size of spiral bit 2 is 22 degree; The conical cone angle of chip 1 is 140 degree.
Between the edge, junction of spiral bit 2 and handle of a knife 3 and the central shaft of spiral bit 2, angle is 28-32 degree; The scheme that optimum is chosen is, between the edge, junction of spiral bit 2 and handle of a knife 3 and the central shaft of spiral bit 2, angle is 30 degree.
The outermost diameter of spiral bit 2 is 1.6-1.7 millimeter; The scheme that optimum is chosen is, the outermost diameter of spiral bit 2 is 1.65 millimeters.
Titanium alloy has heat conduction, temperature diffusivity is little, and chip temperature is high, and chip deformation coefficient is little, and the cutting force in unit are is large, is unfavorable for cutting.Adopt the fluted drill that above-mentioned geometric parameter improves, effectively add cutting ability, increase work efficiency, solve high-speed steel tool in the short-life problem of machining titanium alloy material, and by optimizing chip performance during cutter parameters raising carbide drill machining titanium alloy material.
Last it is noted that obviously, above-described embodiment is only for the utility model example is clearly described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among protection domain of the present utility model.

Claims (4)

1. synergy fluted drill structure, is characterized in that, comprises spiral bit (2) and handle of a knife (3), and one end of fluted drill (2) head is chip head (1), and the shape of chip head (1) is conical; The other end of fluted drill (2) head is provided with the projection (4) of triangular prism shape, is arc transition between fluted drill (2) end and projection (4); One end of handle of a knife (3) is provided with the groove (5) of triangular prism; Protruding (4) and groove (5) are all evenly distributed with three fixing holes; Protruding (4) are inserted in groove (5), fixing hole position on protruding (4) and groove (5) coincides, pin (7) is provided with in the fixing hole of protruding (4) and groove (5), the fixing hole place of groove (5) is fixed with screw (6) by screw thread, and pin (7) is locked in fixing hole by screw (6).
2. synergy fluted drill structure as claimed in claim 1, it is characterized in that, the helical angle size of spiral bit (2) is 20-24 degree; The conical cone angle of chip head (1) is 138-142 degree.
3. synergy fluted drill structure as claimed in claim 1, it is characterized in that, between the edge, junction of spiral bit (2) and handle of a knife (3) and the central shaft of spiral bit (2), angle is 28-32 degree.
4. synergy fluted drill structure as claimed in claim 1, it is characterized in that, the outermost diameter of spiral bit (2) is 1.6-1.7 millimeter.
CN201420482259.XU 2014-08-26 2014-08-26 Synergy fluted drill structure Expired - Fee Related CN204108414U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420482259.XU CN204108414U (en) 2014-08-26 2014-08-26 Synergy fluted drill structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420482259.XU CN204108414U (en) 2014-08-26 2014-08-26 Synergy fluted drill structure

Publications (1)

Publication Number Publication Date
CN204108414U true CN204108414U (en) 2015-01-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420482259.XU Expired - Fee Related CN204108414U (en) 2014-08-26 2014-08-26 Synergy fluted drill structure

Country Status (1)

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CN (1) CN204108414U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105965292A (en) * 2016-06-27 2016-09-28 北京航天控制仪器研究所 Quick locking anti-pull expanding tire of workpiece being positioned by using inner hole and end face

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105965292A (en) * 2016-06-27 2016-09-28 北京航天控制仪器研究所 Quick locking anti-pull expanding tire of workpiece being positioned by using inner hole and end face

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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: 20150121

Termination date: 20170826