CN203044923U - Arc rake angle countersink blade - Google Patents

Arc rake angle countersink blade Download PDF

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Publication number
CN203044923U
CN203044923U CN 201220693514 CN201220693514U CN203044923U CN 203044923 U CN203044923 U CN 203044923U CN 201220693514 CN201220693514 CN 201220693514 CN 201220693514 U CN201220693514 U CN 201220693514U CN 203044923 U CN203044923 U CN 203044923U
Authority
CN
China
Prior art keywords
blade
countersink
rake
face
rake 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
CN 201220693514
Other languages
Chinese (zh)
Inventor
廖强
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.)
Qijiang Gear Transmission Co Ltd
Original Assignee
Qijiang Gear Transmission 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 Qijiang Gear Transmission Co Ltd filed Critical Qijiang Gear Transmission Co Ltd
Priority to CN 201220693514 priority Critical patent/CN203044923U/en
Application granted granted Critical
Publication of CN203044923U publication Critical patent/CN203044923U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an arc rake angle countersink blade. A flank surface of the arc rake angle countersink blade and a machining surface form a 10-degree included angle, the rake surface is concaved inward, and the rake surface and the flank surface form a 70-degree included angle at the cutting edge portion. The concave of the rake surface is formed to be a cylindrical surface. The arc rake angle countersink blade has the advantages of reducing downward pressure, relieving labor intensity, improving working efficiency, reducing tool resistance, and being slow in passivation of the blade, and capable of greatly increasing the quantity of machined products when the tool is sharpened at a time. Moreover, the grinding of the rake angle of the blade is simple and convenient, and the manufacturing cost of the arc rake angle countersink blade is low.

Description

Circular arc anterior angle countersink sheet
Technical field
The utility model relates to a kind of counterbit cutter, particularly a kind of end face counterbit cutter.
Background technology
Counterbit is that the end face to the hole carries out plane, cylinder, the conical surface and the processing of other profiles.The end face counterbit can guarantee the perpendicularity of end face and the centerline hole in hole.In the existing processing, the product working (finishing) area is big, and cutting edge is long, and existing counterbit cutter rake face is vertical with machined surface, and it is big to add the man-hour cutting resistance, and required downward pressure is big, the following many problems of meeting appearance in the process.1. the blade passivation is fast, and multipotency is processed 20 groups of end faces, and durability is poor; 2. in the blade passivating process, machined surface easily is corrugated, and roughness is poor; 3. the blade resistance is big, and downward pressure is big, and operation labour intensity is big.
Summary of the invention
At shortcoming of the prior art, the utility model provide a kind of durable, crudy is high, processing labour intensity is low, make circular arc anterior angle countersink sheet easily.
The technical solution of the utility model is: a kind of circular arc anterior angle countersink sheet, and knife face and machined surface form 10 degree angles behind the described circular arc anterior angle countersink sheet, and rake face is to the blade sunken inside, and rake face forms angle less than 80 degree with the back knife face at the blade place.
Described rake face is the face of cylinder.
Described rake face forms angle with the back knife face at the blade place be 70 degree.
Owing to adopted such scheme, the utility model that following advantage is arranged:
1. reduced and added blade resistance and downward pressure in man-hour, reduced labour intensity.
2. the blade passivation improves, and has improved the blade durability, has increased product processing quantity.
3. cutting resistance reduces, and processes briskly, and product machined surface roughness is effectively improved.
4. it is simple and convenient to improve the grinding of blade anterior angle, low cost of manufacture.
Description of drawings
Fig. 1 is circular arc anterior angle countersink chip architecture schematic diagram;
Fig. 2 is circular arc anterior angle countersink sheet work schematic diagram;
Fig. 3 is circular arc anterior angle countersink sheet rake face processing schematic diagram;
Fig. 4 is that countersink sheet 5 degree anterior angles are improved schematic diagram.
In the accompanying drawing, 1 is the back knife face, and 2 is rake face, and 3 is machined surface, and 4 is anterior angle, and 5 is relief angle, and 6 is circular arc anterior angle countersink sheet, and 7 are the processing ripple, and 8 is emery wheel.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Referring to Fig. 1 to Fig. 4, a kind of circular arc anterior angle countersink sheet 6, knife face 1 forms the relief angle 5 that size is 10 degree with machined surface 3 behind the described circular arc anterior angle countersink sheet, and rake face 2 becomes the face of cylinder to the blade sunken inside, and 2 on preceding cutter forms angle with back knife face 1 at the blade place be 70 degree.
Because circular arc anterior angle countersink sheet has 10 degree anterior angles 4, the suffered resistance of blade reduces in the processing end face process, blade abrasion alleviates, the blade of no anterior angle is that passivation needs sharpening again after processing 20 set products, but 100 groups of sharpening converted products of the utility model, the blade abrasion resistance improves five times, reduces the sharpening number of times of blade, reduces the sharpening cost.After the suffered resistance of blade reduced, the required downward pressure of blade also reduced, and reduced staff's labour intensity.After blade processing wearing and tearing alleviated, product was difficult for because the blade passivation produces ripple 7 at machined surface, and the machined surface roughness is easier to reach requirement, again owing to reduced labour intensity, can improve 3 times of the working (machining) efficiencies of product in the unit interval through test statistics.
Circular arc anterior angle countersink sheet rake face adopts face of cylinder depression that many advantages are arranged.At first make things convenient for the processing of rake face, can directly directly carry out grinding as shown in Figure 3 with emery wheel 8 and get final product, convenient and swift, cost is inefficient high.Secondly, the face of cylinder can make the littler anterior angle that can make of blade depression reach prescribed level, improves the intensity of blade.The staff once adopted the described processing mode of Fig. 4 to improve the countersink sheet, by two anterior angles of grinding be 5 the degree rake faces improve the countersink sheet, though described improvement blade performance promotes to some extent, but effect can not show a candle to the utility model, the product machined surface roughness is also effectively improved, simultaneously, two rake face processing grinding difficulties of described countersink sheet, processing cost height.As two rake face anterior angles being worked into 10 degree, then rake face is too much to the blade sunken inside, has reduced the intensity of blade blade, the thickness attenuation of cutting edge simultaneously, and the intensity of reduction blade also further strengthens grinding difficulty and cost.Because it is the same substantially with the depression size that the described improved procedure 5 degree anterior angle tool setting figures of Fig. 4 become that the size restrictions of countersink sheet, cylindrical so rake face form 10 degree anterior angles, so the utility model obviously is better than the described improvement of Fig. 4.Certainly in the practice, because the different needs in the difference processing must adopt improved procedure shown in Figure 4 to process, also be completely contained within the protection domain of the present utility model.

Claims (3)

1. circular arc anterior angle countersink sheet is characterized in that: knife face and machined surface form 10 degree angles behind the described circular arc anterior angle countersink sheet, and rake face is to the blade sunken inside, and rake face forms angle less than 80 degree with the back knife face at the blade place.
2. circular arc anterior angle countersink sheet according to claim 1, it is characterized in that: described rake face is the face of cylinder.
3. circular arc anterior angle countersink sheet according to claim 2 is characterized in that: described rake face forms angle with the back knife face at the blade place be 70 degree.
CN 201220693514 2012-12-16 2012-12-16 Arc rake angle countersink blade Expired - Fee Related CN203044923U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220693514 CN203044923U (en) 2012-12-16 2012-12-16 Arc rake angle countersink blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220693514 CN203044923U (en) 2012-12-16 2012-12-16 Arc rake angle countersink blade

Publications (1)

Publication Number Publication Date
CN203044923U true CN203044923U (en) 2013-07-10

Family

ID=48727920

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220693514 Expired - Fee Related CN203044923U (en) 2012-12-16 2012-12-16 Arc rake angle countersink blade

Country Status (1)

Country Link
CN (1) CN203044923U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112439913A (en) * 2020-11-03 2021-03-05 西安法士特汽车传动有限公司 Cutting blade for processing inner inverted bevel gear of synchronizer gear sleeve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112439913A (en) * 2020-11-03 2021-03-05 西安法士特汽车传动有限公司 Cutting blade for processing inner inverted bevel gear of synchronizer gear sleeve

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130710

Termination date: 20131216