CN203711942U - Circular hole chamfering tool - Google Patents
Circular hole chamfering tool Download PDFInfo
- Publication number
- CN203711942U CN203711942U CN201420024623.8U CN201420024623U CN203711942U CN 203711942 U CN203711942 U CN 203711942U CN 201420024623 U CN201420024623 U CN 201420024623U CN 203711942 U CN203711942 U CN 203711942U
- Authority
- CN
- China
- Prior art keywords
- circular hole
- frustum portion
- cutter
- chamfering
- 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
Links
Abstract
The utility model discloses a circular hole chamfering tool. The circular hole chamfering tool comprises a handle portion and a frustum portion, wherein the large end face of the frustum portion is coaxially connected with the handle portion, a downward cone angle alpha 1 is 900 to 1200 degrees, and 3 to 5 cutter slots are evenly clockwise formed in the circumference of the frustum portion. An angle alpha 2 formed by inner planes of the cutter slots and an axis of the handle portion is smaller than the alpha 1 by 100 to 200 degrees, and a rake angle gamma of a blade portion of each cutter slot is 800 to 850 degrees. The rake angle of the blade portion is an obtuse angle, so that the blade portion lacks sharpness; only such a micro cutting tool is particularly applicable to orifice chamfering, a plurality of tool blades are used for spot facing simultaneously, and workpieces are evenly stressed without shaking, so that the workpieces need not be fixedly connected, subsidiary time can be greatly saved, and production efficiency is obviously improved.
Description
Technical field
The utility model relates to a kind of drilling cutters, and specifically, the utility model relates to a kind of cutter for circular hole chamfering.
Background technology
Steel flange is a kind of General Mechanical Parts, is widely used in the connection of various pipelines.The architectural feature of steel flange be end face by the uniform connecting through hole of specification, under conventional working condition, the connecting through hole on steel flange all adopts drilling to shape.The through hole entrance point band of drilling processing is jagged, and the port of export is with overlap, and according to general technical specifications requirement, chamfered all must be made in these apertures.The industry generally, after connecting through hole drilling, is used major diameter fluted drill instead and is connected through hole oral area chamfering.This kind of way is easy, and major diameter spiral bit used is easily purchased, and chamfering is convenient.In fact, because spiral bit blade anterior angle is less, cutting edge is sharp, and cutting speed is fast, is not suitable for being directly used in very much through hole chamfering, just can accomplish that chamfering is smooth after only having workpiece fixing, otherwise chamfering place is wavy.Workpiece is no doubt safety of chamfering under rigid condition, and chamfer quality is high, but production efficiency is low, the chamfer machining of uncomfortable cooperation batch production steel flange connecting through hole.
Utility model content
The utility model is mainly for the deficiency of existing spiral bit chamfering, propose a kind of simple in structure, make easily, the quick and measured circular hole chamfering tool of matter of chamfering, this cutter during for chamfering workpiece do not need to fix as position, greatly save unproductive time, enhance productivity.
The utility model is achieved through the following technical solutions technical goal.
Circular hole chamfering tool, it consists of jointly shank and frustum portion.Its improvements are: described frustum portion large end face is coaxially connected with shank, cone angle alpha down
1=90
0～120
0, clockwise uniform 3～5 cutter grooves on frustum portion circumference.The axis angle α of the inner plane of described cutter groove and shank
2compare α
1little by 10
0～20
0, blade anterior angle γ=80 of cutter groove
0～85
0.
In said structure, integrated shank and frustum portion material are high-speed tool steel.
The utility model compared with prior art, has following good effect:
1, simple, the highly versatile of the cutter structure of sizing chamfering;
2, the blade anterior angle of circular hole chamfering tool is obtuse angle, owes sharp blade and is particularly suitable for doing orifice chamfer processing;
3, many blade while spot-facings, workpiece is stressed evenly can not shaken, therefore workpiece does not need the connection that fixes, can greatly save unproductive time thus, significantly improves production efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model structural front view.
Fig. 2 is the top view of Fig. 1.
The specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in further detail.
Circular hole chamfering tool high-speed tool steel making shown in Fig. 1, it consists of jointly shank 1 and frustum portion 2.Described frustum portion 2 large end faces are coaxially connected with shank 1, and shank 1 is for clamping, and frustum portion 2 outer walls are provided with 3～5 blades.Frustum portion 2 cone angle alpha down
1equal connecting through hole oral area chamfer dimesion to be processed, the present embodiment connecting through hole to be processed is Φ 17mm, and oral area is 1 * 120
0chamfering, because of aperture to be processed little, therefore frustum portion 2 cone angle alpha down
1take 120
0, on frustum portion 2 circumference, clockwise uniform 3 cutter grooves 2.1, are just enough to meet high-quality chamfer machining.Because of frustum portion 2 cone angle down in the present embodiment
1=120
0, the inner plane of cutter groove 2.1 and shank 1 axis angle α
2compare α
1little by 10
0, the blade anterior angle γ value of cutter groove 2.1 is 85
0.This kind of blade anterior angle is obtuse angle, makes blade owe sharp, and the cutter that only in this way micro cutting is used is just particularly suitable for doing orifice chamfer processing.Add 3 blades spot-facing simultaneously, workpiece is stressed evenly can not shaken, therefore workpiece does not need the connection that fixes, can greatly save unproductive time thus, significantly improves production efficiency.
The utility model is forming tool, and blade is distributed on frustum portion 2 outer walls, same can be for chamfer machining within the scope of certain size cutter.The cone angle of frustum portion 2
1main Basis workpiece demand, 45
0chamfering selects 90
0, 60
0chamfering selects 120
0although, α
1value is different, but result of use is identical.
Claims (2)
1. a circular hole chamfering tool, it consists of jointly shank (1) and frustum portion (2); It is characterized in that: described frustum portion (2) large end face is coaxially connected with shank (1), cone angle alpha down
1=90
0～120
0, clockwise uniform 3～5 cutter grooves (2.1) on frustum portion (2) circumference; The axis angle α of the inner plane of described cutter groove (2.1) and shank (1)
2compare α
1little by 10
0～20
0, blade anterior angle γ=80 of cutter groove (2.1)
0～85
0.
2. circular hole chamfering tool according to claim 1, is characterized in that: integrated shank (1) and frustum portion (2) material are high-speed tool steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420024623.8U CN203711942U (en) | 2014-01-16 | 2014-01-16 | Circular hole chamfering tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420024623.8U CN203711942U (en) | 2014-01-16 | 2014-01-16 | Circular hole chamfering tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203711942U true CN203711942U (en) | 2014-07-16 |
Family
ID=51151141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420024623.8U Expired - Fee Related CN203711942U (en) | 2014-01-16 | 2014-01-16 | Circular hole chamfering tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203711942U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499666A (en) * | 2014-10-16 | 2016-04-20 | 张新添 | Disposable chamfering blade |
-
2014
- 2014-01-16 CN CN201420024623.8U patent/CN203711942U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499666A (en) * | 2014-10-16 | 2016-04-20 | 张新添 | Disposable chamfering blade |
| CN105499666B (en) * | 2014-10-16 | 2019-10-11 | 张新添 | Disposable chamfering blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BOTH-WELL (TAIZHOU) STEEL FITTINGS CO., LTD. Free format text: FORMER OWNER: SHINSEI (TAIZHOU) STEEL FLANGES CO., LTD. Effective date: 20150127 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150127 Address after: 225500 Yangzhou Road, Jiangyan Economic Development Zone, Jiangyan District, Jiangsu, Taizhou Patentee after: Cypress (Taizhou) Iron Works Co., Ltd. Address before: 225500 No. 688 West Tianmu Road, Jiangyan Economic Development Zone, Taizhou, Jiangsu Patentee before: SHINSEI (TAIZHOU) STEEL FLANGES CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20200116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |