CN203509211U - Inner-cooling type reaming and extruding tool - Google Patents
Inner-cooling type reaming and extruding tool Download PDFInfo
- Publication number
- CN203509211U CN203509211U CN201320604855.6U CN201320604855U CN203509211U CN 203509211 U CN203509211 U CN 203509211U CN 201320604855 U CN201320604855 U CN 201320604855U CN 203509211 U CN203509211 U CN 203509211U
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- hole
- section
- tool
- cutter
- carbide bit
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- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
An inner-cooling type reaming and extruding tool comprises a tool handle part, a tool body part and a tool head part, wherein a cooling medium supply inlet is formed in the centers of the tool handle part, the tool body part and the tool head part; a carbide bit is inlaid on the tool head part; the turning diameter of the carbide bit comprises three sections, the turning diameter D1 of the cylinder section A at the forefront end is in transition with the turning diameter D2 of the cylinder section C at the rear portion through the middle conical surface B, and D1 is smaller than D2. When a hole of a work piece is machined, the hole is reamed firstly through the section A at the forefront end, due to the feeding action and the diameter of the section C at the rear portion is larger, the inner surface of the hole can be extruded by the section C, and the degree of finish of the hole and the intensity and rigidity of the surface are improved, namely the hole is not reamed through the section C; as the cutting edge of the part, on the section C, of the carbide bit is smooth, only the inner surface of the hole of the work piece is extruded. The smooth degree of the inner surface of the hole machined through the inner-cooling type reaming and extruding tool is improved obviously, and the intensity and rigidity of the inner surface are strengthened.
Description
Technical field
The utility model relates to a kind of reamer, and particularly a kind of inner-cooled ream-extrude cutter, belongs to a sharp machine tool, for the hole on ream workpiece.
Background technology
Existing reamer comprises that the handle of a knife portion of back is, middle cutter hub portion and cutter head in front portion, center in handle of a knife portion, cutter hub portion, cutter head portion is provided with cooling medium feeding hole, in cutter head portion, be inlaid with carbide bit, the tactical diameter of carbide bit is consistent, blade is only logical carries out ream to the hole on workpiece, the inner surface in hole is not produced to extruding force, and the fineness of internal surface of hole is limited, and case hardness is not strengthened.
Summary of the invention
The purpose of this utility model be to provide a kind of simple in structure, not only can carry out ream to the hole of workpiece, also can the internal surface of hole after ream be pushed, improve the inner-cooled ream-extrude cutter of its surface smoothness, surface strength and rigidity, overcome the deficiencies in the prior art.
Inner-cooled ream-extrude cutter of the present utility model, comprise handle of a knife portion, cutter hub portion and cutter head portion, center in handle of a knife portion, cutter hub portion, cutter head portion is provided with cooling medium feeding hole, in cutter head portion, be inlaid with carbide bit, the tactical diameter of described carbide bit comprises three sections, wherein between the cylindrical tactical diameter D1 of A section foremost and the cylindrical tactical diameter D2 of C section at rear portion by middle cone B transition, D1 is less than D2.
Described D2-D1=(0.0042-0.0046) h, wherein h is the axial length of middle cone B.
Inner-cooled ream-extrude cutter of the present utility model, the hole of workpiece is added and first by A section above, carries out ream man-hour, owing to there being the action of feed, C section diameter is below slightly large, by C section, can push the inner surface in hole, improve its fineness and surperficial strength and stiffness, C section is not carried out ream to hole, the cutting edge of the alloy cutter head in C section is round and smooth shape, only pushes workpiece hole inner surface.Utilize the internal surface of hole smooth degree of this tool sharpening obviously to improve, and strengthened the strength and stiffness of inner surface.
Accompanying drawing explanation
Fig. 1 is the structural representation of tool present embodiment of the present utility model;
Fig. 2 is the partial enlarged drawing of the cutter head portion shown in Fig. 1.
The specific embodiment
As shown in Figure 1, 2: this cutter comprises handle of a knife portion 3, cutter hub portion 2 and cutter head portion 1, in the center of handle of a knife portion 3, cutter hub portion 2, cutter head portion 1, be provided with cooling medium feeding hole 4.In cutter head portion 1, be inlaid with carbide bit.The tactical diameter of carbide bit comprises three sections, wherein between the cylindrical tactical diameter D1 of A section foremost and the cylindrical tactical diameter D2 of C section at rear portion by middle cone B transition, D1 is less than D2.D2-D1=(0.0042-0.0046) h, the best is 0.0044h, wherein h is the axial length of middle cone B.The axial length of A section and C section is definite according to the designing requirement in hole, as long as A section can complete ream machining, C section can improve to the internal surface of hole after ream the processing of fineness and intensity and rigidity.In C section back, can there is one section of rear cone 5.
Inner-cooled ream-extrude cutter of the present utility model, the hole of workpiece is added and first by A section above, carries out ream man-hour, owing to there being the action of feed, C section diameter is below slightly large, by C section, can push the inner surface in hole, improve its fineness and surperficial strength and stiffness, C section is not carried out ream to hole, utilize the internal surface of hole smooth degree of this tool sharpening obviously to improve, and strengthened the strength and stiffness of inner surface.
Claims (2)
1. an inner-cooled ream-extrude cutter, comprise handle of a knife portion (3), cutter hub portion (2) and cutter head portion (1), center in handle of a knife portion (3), cutter hub portion (2), cutter head portion (1) is provided with cooling medium feeding hole (4), in cutter head portion (1), be inlaid with carbide bit, it is characterized in that: the tactical diameter of described carbide bit comprises three sections, wherein between the cylindrical tactical diameter D1 of A section foremost and the cylindrical tactical diameter D2 of C section at rear portion by middle cone B transition, D1 is less than D2.
2. inner-cooled ream-extrude cutter according to claim 1, is characterized in that: described D2-D1=(0.0042-0.0046) h, wherein h is the axial length of middle cone B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604855.6U CN203509211U (en) | 2013-09-29 | 2013-09-29 | Inner-cooling type reaming and extruding tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604855.6U CN203509211U (en) | 2013-09-29 | 2013-09-29 | Inner-cooling type reaming and extruding tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203509211U true CN203509211U (en) | 2014-04-02 |
Family
ID=50368193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320604855.6U Expired - Fee Related CN203509211U (en) | 2013-09-29 | 2013-09-29 | Inner-cooling type reaming and extruding tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203509211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495774A (en) * | 2013-09-29 | 2014-01-08 | 大连机床(数控)股份有限公司 | Inner-cooling type reaming and squeezing cutter |
-
2013
- 2013-09-29 CN CN201320604855.6U patent/CN203509211U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495774A (en) * | 2013-09-29 | 2014-01-08 | 大连机床(数控)股份有限公司 | Inner-cooling type reaming and squeezing cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20150929 |
|
| EXPY | Termination of patent right or utility model |