CN104551105A - Dual-bit center drill - Google Patents
Dual-bit center drill Download PDFInfo
- Publication number
- CN104551105A CN104551105A CN201310488769.8A CN201310488769A CN104551105A CN 104551105 A CN104551105 A CN 104551105A CN 201310488769 A CN201310488769 A CN 201310488769A CN 104551105 A CN104551105 A CN 104551105A
- Authority
- CN
- China
- Prior art keywords
- cutting portion
- centre drill
- drill
- conical surface
- dual
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/0063—Centerdrills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/14—Configuration of the cutting part, i.e. the main cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/24—Overall form of drilling tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/40—Flutes, i.e. chip conveying grooves
- B23B2251/406—Flutes, i.e. chip conveying grooves of special form not otherwise provided for
Abstract
The invention belongs to the field of cutting tools and particularly relates to a dual-bit center drill integrally made. The dual-bit center drill comprises a tool body; the dual-bit center drill is characterized in that two ends of the tool body are provided with center drilling portions, respectively; a shank is provided between the center drilling portions; each center drilling portion comprises a conical centering cutting portion and a cylindrical cutting portion; each center drilling portion comprises a V-shaped chip groove extending to the shank. The dual-bit center drill is available for double use, application cost of the drill is effectively decreased, rigidity o the drill made by integral forming is effectively improved, and service life of the drill is prolonged.
Description
Technical field
The invention belongs to cutting tool field, the double end centre drill that particularly a kind of overall processing is shaping.
Background technology
Centre drill is used for machining center locating hole, not high to the required precision of cutter, but existing centre drill only has one end to have cutting edge, and just need to carry out tool changing after the cutting edge wearing and tearing of one end, the use cost causing centre drill is like this too high.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, the present invention devises a kind of double end centre drill, can carry out twice use, effectively reduce the use cost of cutter, and the present invention simultaneously adopts one-shot forming, effectively improves cutter rigidity, extends cutting-tool's used life.
The present invention is achieved through the following technical solutions:
Double end centre drill, it comprises the cutter body rotated around axis, it is characterized in that: the two ends of described cutter body are provided with centre drill cutting portion, shank section is provided with between centre drill cutting portion, described centre drill cutting portion comprises conical surface centering cutting portion and cylindric cutting portion, V-type chip area on described centre drill cutting portion, chip area is extended in shank section.
Further, the conical surface angle of described conical surface centering cutting portion is 120 °.
Further, be provided with the transition conical surface between described centre drill cutting portion and shank section, the conical surface angle of the described transition conical surface is 60 °.
Further, the length of described cylindric cutting portion is 3mm.
In sum, the present invention has beneficial effect:
The two ends of cutter body of the present invention are provided with centre drill cutting portion, improve the utilization rate of cutter body, reduce the manufacturing cost of cutter, and the present invention simultaneously adopts one machine-shaping, effectively improves the rigidity of cutter, extends cutting-tool's used life.
Accompanying drawing explanation
By the detailed description below in conjunction with accompanying drawing, aforesaid and other object, the feature and advantage of the present invention will become apparent.Wherein:
Figure 1 shows that structural representation of the present invention;
In figure, 1 is conical surface centering cutting portion, and 2 is cylindric cutting portion, and 3 is the transition conical surface, and 4 is chip area, and 5 is shank section, and 6 is cutter body.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
Double end centre drill as shown in Figure 1, it comprises the cutter body 6 rotated around axis, it is characterized in that: the two ends of described cutter body 6 are provided with centre drill cutting portion, shank section 5 is provided with between centre drill cutting portion, described centre drill cutting portion comprises conical surface centering cutting portion 1 and cylindric cutting portion 2, V-type chip area 4 on described centre drill cutting portion, chip area 4 is extended in shank section.
Further, the conical surface angle of described conical surface centering cutting portion 1 is 120 °.
Further, be provided with the transition conical surface 3 between described centre drill cutting portion and shank section, the conical surface angle of the described transition conical surface 3 is 60 °.
Further, the length of described cylindric cutting portion 2 is 3mm.
In sum, the present invention has beneficial effect:
The two ends of cutter body of the present invention are provided with centre drill cutting portion, improve the utilization rate of cutter body, reduce the manufacturing cost of cutter, and the present invention simultaneously adopts one machine-shaping, effectively improves the rigidity of cutter, extends cutting-tool's used life.
The present invention is not limited to described embodiment, and those skilled in the art, not departing from spirit of the present invention namely openly in scope, still can do some and revise or change, therefore the scope that the scope of the present invention limits with claims is as the criterion.
Claims (4)
1. double end centre drill, it comprises the cutter body rotated around axis, it is characterized in that: the two ends of described cutter body are provided with centre drill cutting portion, shank section is provided with between centre drill cutting portion, described centre drill cutting portion comprises conical surface centering cutting portion and cylindric cutting portion, V-type chip area on described centre drill cutting portion, chip area is extended in shank section.
2. double end centre drill according to claim 1, is characterized in that: the conical surface angle of described conical surface centering cutting portion is 120 °.
3. double end centre drill according to claim 1, is characterized in that: be provided with the transition conical surface between described centre drill cutting portion and shank section, and the conical surface angle of the described transition conical surface is 60 °.
4. double end centre drill according to claim 1, is characterized in that: the length of described cylindric cutting portion is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310488769.8A CN104551105A (en) | 2013-10-17 | 2013-10-17 | Dual-bit center drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310488769.8A CN104551105A (en) | 2013-10-17 | 2013-10-17 | Dual-bit center drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104551105A true CN104551105A (en) | 2015-04-29 |
Family
ID=53068760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310488769.8A Pending CN104551105A (en) | 2013-10-17 | 2013-10-17 | Dual-bit center drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104551105A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105728777A (en) * | 2016-03-31 | 2016-07-06 | 安徽奇峰机械装备有限公司 | Control system of continuous drilling device |
| CN107225269A (en) * | 2017-06-12 | 2017-10-03 | 杭州希恩希拓斯精密机械有限公司 | With the top cutter of evagination |
| WO2019047251A1 (en) * | 2017-09-07 | 2019-03-14 | 深圳市鑫国钰精密工具有限公司 | Drill bit |
-
2013
- 2013-10-17 CN CN201310488769.8A patent/CN104551105A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105728777A (en) * | 2016-03-31 | 2016-07-06 | 安徽奇峰机械装备有限公司 | Control system of continuous drilling device |
| CN105728777B (en) * | 2016-03-31 | 2017-11-17 | 安徽奇峰机械装备有限公司 | It is a kind of to continue rig control system |
| CN107225269A (en) * | 2017-06-12 | 2017-10-03 | 杭州希恩希拓斯精密机械有限公司 | With the top cutter of evagination |
| WO2019047251A1 (en) * | 2017-09-07 | 2019-03-14 | 深圳市鑫国钰精密工具有限公司 | Drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |
|
| WD01 | Invention patent application deemed withdrawn after publication |