CN101780554A - drilling reamer - Google Patents
drilling reamer Download PDFInfo
- Publication number
- CN101780554A CN101780554A CN200910186666A CN200910186666A CN101780554A CN 101780554 A CN101780554 A CN 101780554A CN 200910186666 A CN200910186666 A CN 200910186666A CN 200910186666 A CN200910186666 A CN 200910186666A CN 101780554 A CN101780554 A CN 101780554A
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- China
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- cutting portion
- cutting
- forms
- rake face
- main
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Abstract
The invention relates to a drilling reamer, which comprises a cylindrical tool body. The rear end part of the body forms a tool shank, the front end part of the body forms a cutting part, the front end of the cutting part is provided with a conical drilling tip, the peripheral surface of the cutting part is provided with at least two discharging grooves along the axial line of the body, one side face of the discharging grooves facing the tool rotating direction forms a main front tool face, a main cutting blade is formed in the connection position of the main front tool face and the peripheral surface of the body; and an auxiliary cutting blade is formed in the connection position of the main front tool face and the peripheral surface of the drilling tip, the main front tool face is provided with a discontinuous chipping groove along the side close to the drilling tip, the discontinuous chipping groove extends along the direction of the auxiliary cutting blade, the surface of the discontinuous chipping groove forms an auxiliary front tool face, and the cutting rake angle formed by the auxiliary front tool face is a positive angle. The invention has the advantages that the chippings generated in cutting can be easily rolled and broken, thereby preventing the influence on the normal processing. In addition, the invention can significantly improve the processing efficiency and the degree of finish of the processed surface.
Description
Technical field
The present invention relates to a kind of metal cutting tool that is used for machining hole on the Digit Control Machine Tool, the particularly a kind of drilling reamer that not only can hole but also can ream.
Background technology
In field of machining, usually, for the processing of the higher endoporus of requirement on machining accuracy, all finish by drilling and reaming or two steps of bore hole, working (machining) efficiency is lower, and needs to change cutter, again might cause error to increase in the process of clamping cutter, influence the precision in hole.
Summary of the invention
The purpose of this invention is to provide a kind of drilling reamer that can realize drilling and reaming processing simultaneously.
The technical solution adopted in the present invention is: a kind of drilling reamer, has columniform cutter body, the rearward end of described body forms handle of a knife, leading section forms cutting portion, the front end of described cutting portion has the taper apex point, the axis direction of the described body in external peripheral surface upper edge of described cutting portion offers at least two discharge grooves, a side towards the cutter direction of rotation of described discharge groove forms main rake face, and the junction between the external peripheral surface of described main rake face and described body forms main cutting edge; The junction of the outer surface of described main rake face and described apex point forms front cutting edge, offer the chip-breaker that extends along described front cutting edge direction in a side on the described main rake face near described apex point, the surface of described chip-breaker forms secondary rake face, and the formed cutting anterior angle of this pair rake face is a positive angle.
Preferably, the sharp angle α of described drilling reamer is 120 degree.
Preferably, described cutting portion comprises first cutting portion and second cutting portion that axial line coincides, the external diameter of described second cutting portion is greater than described first cutting portion, and have the transition conical surface that extends along the hand of spiral between described first cutting portion and second cutting portion, and the angle β between the axial line described transition conical surface and described body is 160 degree.
Advantage compared with prior art of the present invention is: the present invention is combined as a whole drill bit and reamer, only need a clamping, just can disposablely finish drilling and reaming, simultaneously, the front cutting edge place offers chip-breaker, guarantee that secondary cutting anterior angle is a positive angle, and make cutting swarf batch, fracture easily, can not influence normal process; Advantage of the present invention is embodied in the processing of high sial especially, can significantly promote the fineness of working (machining) efficiency and surface to be machined.
Description of drawings
Accompanying drawing 1 is the front view of drilling reamer of the present invention.
Accompanying drawing 2 is the left view of drilling reamer of the present invention.
Accompanying drawing 3 is along the cutaway view of A-A in the accompanying drawing 1.
Wherein: 1, handle of a knife; 2, cutting portion; 3, apex point; 4, discharge groove; 5, main cutting edge; 6, front cutting edge; 7, main rake face; 8, secondary rake face; 9, chip-breaker; 10, first cutting portion; 11, second cutting portion.
The specific embodiment
Shown in accompanying drawing 1 and accompanying drawing 3, the invention discloses a kind of drilling reamer, have columniform cutter body, the rearward end of described body forms handle of a knife 1, leading section forms cutting portion 2, the front end of described cutting portion has taper apex point 3, and the sharp angle α of described drilling reamer is 120
+ 0 -2Degree.
The axis direction of the described body in external peripheral surface upper edge of described cutting portion 2 offers at least two discharge grooves 4, a side towards the cutter direction of rotation of described discharge groove 4 forms main rake face 7, and the junction between the external peripheral surface of described main rake face 7 and described body forms main cutting edge 5; Described main rake face 7 forms front cutting edge 6 with the junction of the outer surface of described apex point 3, offer the chip-breaker 9 that extends along described front cutting edge 6 directions in a side on the described main rake face 7 near described apex point 3, the surface of described chip-breaker 9 forms secondary rake face 8, and these pair rake face 8 formed cutting anterior angles are positive angle.This chip-breaker 9 can promote batching of cutting swarf, and it is fractureed rapidly, thereby avoids cutting swarf long, influences normal process.
For further improving working (machining) efficiency, when different two the concentric shoulder holes of processing diameter, described cutting portion 2 can be arranged to first cutting portion 10 and second cutting portion 11 that comprise that axial line coincides, and the external diameter of described second cutting portion 11 is greater than described first cutting portion 10.
Further, when the stepped hole of needs processing need form chamfering, has the transition conical surface that extends along the hand of spiral between described first cutting portion 10 and second cutting portion 11, and the angle β between the axial line of the described transition conical surface and described body is 160 degree, just can finish the processing of boring, fraising, stepped hole and chamfering like this through time processing, efficient is very high.
The foregoing description only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the personage that is familiar with this technology can understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences that spirit essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (4)
1. drilling reamer, has columniform cutter body, the rearward end of described body forms handle of a knife, leading section forms cutting portion, it is characterized in that: the front end of described cutting portion has the taper apex point, the axis direction of the described body in external peripheral surface upper edge of described cutting portion offers at least two discharge grooves, a side towards the cutter direction of rotation of described discharge groove forms main rake face, and the junction between the external peripheral surface of described main rake face and described body forms main cutting edge; The junction of the outer surface of described main rake face and described apex point forms front cutting edge, offer the chip-breaker that extends along described front cutting edge direction in a side on the described main rake face near described apex point, the surface of described chip-breaker forms secondary rake face, and the formed cutting anterior angle of this pair rake face is a positive angle.
2. drilling reamer according to claim 1 is characterized in that: the sharp angle α of described drilling reamer is 120 degree.
3. drilling reamer according to claim 1 is characterized in that: described cutting portion comprises first cutting portion and second cutting portion that axial line coincides, and the external diameter of described second cutting portion is greater than described first cutting portion.
4. drilling reamer according to claim 3, it is characterized in that: have the transition conical surface that extends along the hand of spiral between described first cutting portion and second cutting portion, and the angle β between the axial line described transition conical surface and described body is 160 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910186666A CN101780554A (en) | 2009-12-08 | 2009-12-08 | drilling reamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910186666A CN101780554A (en) | 2009-12-08 | 2009-12-08 | drilling reamer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101780554A true CN101780554A (en) | 2010-07-21 |
Family
ID=42520764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910186666A Pending CN101780554A (en) | 2009-12-08 | 2009-12-08 | drilling reamer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101780554A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922008A (en) * | 2012-10-31 | 2013-02-13 | 中国北车集团大连机车车辆有限公司 | Drilling tool |
| CN103157835A (en) * | 2013-03-28 | 2013-06-19 | 苏州阿诺精密切削技术股份有限公司 | Taper reamer driller used for processing of plate parts |
| CN112262009A (en) * | 2018-06-13 | 2021-01-22 | 博泰克精密钻孔技术有限公司 | Deep hole drill and drilling tool with one or more depressions in cutting surface |
-
2009
- 2009-12-08 CN CN200910186666A patent/CN101780554A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922008A (en) * | 2012-10-31 | 2013-02-13 | 中国北车集团大连机车车辆有限公司 | Drilling tool |
| CN103157835A (en) * | 2013-03-28 | 2013-06-19 | 苏州阿诺精密切削技术股份有限公司 | Taper reamer driller used for processing of plate parts |
| CN103157835B (en) * | 2013-03-28 | 2016-02-10 | 苏州阿诺精密切削技术股份有限公司 | For the taper hole drilling reamer of plate parts processing |
| CN112262009A (en) * | 2018-06-13 | 2021-01-22 | 博泰克精密钻孔技术有限公司 | Deep hole drill and drilling tool with one or more depressions in cutting surface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100721 |