CN2460245Y - Precision hole dill - Google Patents
Precision hole dill Download PDFInfo
- Publication number
- CN2460245Y CN2460245Y CN 01214098 CN01214098U CN2460245Y CN 2460245 Y CN2460245 Y CN 2460245Y CN 01214098 CN01214098 CN 01214098 CN 01214098 U CN01214098 U CN 01214098U CN 2460245 Y CN2460245 Y CN 2460245Y
- Authority
- CN
- China
- Prior art keywords
- circular arc
- sizing
- dill
- utility
- precision hole
- 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
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- Drilling Tools (AREA)
Abstract
The utility model discloses a precision hole drill. The utility model comprises a working part and a handle part connected with the working part, wherein, the working part comprises cutting edges and sleeking blades positioned on the circumference of the cylindrical surface of the working part, a chip groove, an excessive surface, and a circular arc-shaped surface, wherein, the cutting edges are positioned on the end surface of one end far away from the handle part and are respectively distributed along the axis in the central symmetry; the circumference of the cylindrical surface of the working part is also provided with at least two sizing compressive strips, the cross section is a circular arc, and the circular arc of the cross section of each sizing compressive strip and the circular arc of the cross section of the circular arc-shaped surface are concentric circular arcs. The utility model has the advantages of high hole diameter working precision and smooth and clean hole wall.
Description
The utility model relates to a kind of drilling process tool, especially a kind of aperture precision height, Precision hole dill that hole wall is bright and clean processed.
How fluted drill in the existing drilling process tool, reamer are made of operate portions and continuous shank thereof, operate portions has the helical flute of two, three or four different curves, and apex point portion has two, three or four to be symmetrical cutting edge with respect to drift angle.Because its chip area cross section semicircular in shape, and groove structure in the shape of a spiral longitudinally, therefore intensity is not high, in working angles, can not stably feel relieved, lead and overcome and radially change power, the problem that exists institute's reaming off-centre, aperture to enlarge, in addition, these hole drills can not carry out rolling and processing to hole wall adding man-hour, and therefore processing back hole wall is coarse.
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of aperture precision height, Precision hole dill that hole wall is bright and clean processed is provided.
The utility model comprises operate portions and the shank that links to each other with operate portions.Operate portions includes: jointly along axis present at least two cutting edges on that the center is symmetrically distributed, the operate portions end face, be positioned at around the operate portions cylinder at least two wiper edges, at least two chip areas, two transition faces and two arc surfaces of being centrosymmetric and distributing along axis, it is characterized in that: also have at least two sizing compressive zones on around the operate portions cylinder, its cross section is a circular arc, and the circular arc of sizing compressive zone cross section and the circular arc of arc surface cross section are isocentric circular arc.The excessive face of the utility model be a plane or between arc surface and sizing compressive zone to the curved surface of axis indent.The projection of chip area on horizontal end face is L-shaped, and its bottom surface is the plane, and wherein the width on the plane of close arc surface is less than the width that squeezes the plane of band near sizing.The utility model chip area is the straight trough parallel with axis, or with axis skewed slot at an angle.In working angles, the cutting swarf under the cutting is bent downwardly distortion, flows to green surface and guarantees the machined surface any surface finish, and cutting swarf is discharged by chip area, by the sizing compressive zone hole wall is carried out rolling and processing simultaneously, and the roughness of hole wall is reduced.
Advantage of the present utility model is: one, flute profile simply is easy to make, and is easy to improve precision; Two, mechanical property is good, hole drilling and reaming precision height; Three, the utility model is when finishing cutwork, and the sizing compressive zone pushes hole wall again, Jia Gong hole dimensional accuracy height not only like this, and also hole wall is bright and clean, and surface strength, hardness all are improved, thereby have improved the durability of product; Four, the smear metal under the face cutting edge cutting is forced downwardly row, makes hole wall avoid cutting and squeezes and hinder; Five, operate portions good rigidly, its length can also can be done deep hole machining with adding long handle greater than the length dimension of the fluted drill operate portions of same size; Six, the utility model adds man-hour radially change power and is effectively controlled, and the cutting speed height, the degree of depth is big, the amount of feeding is big, high efficiency.
Provide accompanying drawing of the present utility model below.
Fig. 1 is that the parallel shank core drill that the utility model is used for reaming is faced the planar structure schematic diagram
Fig. 2 is the left view plane structural representation of the utility model reamer
Fig. 3 is that the hole drill that the utility model is used to hole is faced the planar structure schematic diagram
Fig. 4 is the left view plane structural representation of the utility model hole drill
Fig. 5 is that the excessive face of the utility model operate portions is the cross section structure schematic diagram on plane
Fig. 6 is that the excessive face of the utility model operate portions is the cross section structure schematic diagram of curved surface
Below in conjunction with drawings and Examples the utility model is done further and to be elaborated.
The utility model comprises operate portions 1 and the shank 2 that links to each other with operate portions 1, operate portions 1 comprise respectively along axis be centrosymmetric being positioned at of distributing away from the cutting edge 3 on the end face of an end of shank 2, be positioned at the wiper edges 5 around the cylinder of operate portions 1, and chip area 6, excessive face 7 and arc surface 8, it is characterized in that: also have at least two sizing compressive zones 9 on around operate portions 1 cylinder, its cross section is a circular arc, and the circular arc of the circular arc of sizing compressive zone 9 cross sections and arc surface 8 cross sections is an isocentric circular arc.The utility model sizing compressive zone 9 is along the axis distribution that is centrosymmetric.The excessive face 7 of the utility model is that a plane is between arc surface 8 and sizing compressive zone 9 or to the curved surface of axis indent, the projection of the utility model chip area 6 on horizontal end face is L-shaped, its bottom surface is the plane, wherein near the width on the plane of arc surface 8 less than the width that squeezes near sizing with 9 plane.The utility model chip area 6 is straight troughs parallel with axis, or with axis skewed slot at an angle.The utility model is processed the aperture precision height, hole wall is bright and clean.
Claims (7)
1, a kind of Precision hole dill, comprise operate portions (1) and the shank (2) that links to each other with operate portions (1), operate portions (1) comprises respectively along axis and is centrosymmetric being positioned at of distributing away from the cutting edge (3) on the end face of an end of shank (2), be positioned at the cylinder wiper edges (5) all around of operate portions (1), and chip area (6), excessive face (7) and arc surface (8), it is characterized in that: around operate portions (1) cylinder, go up at least two sizing compressive zones (9) in addition, its cross section is a circular arc, and the circular arc of the circular arc of sizing compressive zone (9) cross section and arc surface (8) cross section is an isocentric circular arc.
2, Precision hole dill according to claim 1 is characterized in that: sizing compressive zone (9) is along the axis distribution that is centrosymmetric.
3, Precision hole dill according to claim 1 is characterized in that: transition face (7) is a plane.
4, Precision hole dill according to claim 1 is characterized in that: transition face (7) is positioned between arc surface (8) and the sizing compressive zone (9) for the curved surface to the axis indent.
5, Precision hole dill according to claim 1 is characterized in that: the projection of chip area (6) on horizontal end face is L-shaped, and its bottom surface is the plane.
6, Precision hole dill according to claim 1 is characterized in that: chip area (6) is the straight trough parallel with axis.
7, Precision hole dill according to claim 1 is characterized in that: chip area (6) is and axis skewed slot at an angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01214098 CN2460245Y (en) | 2001-02-09 | 2001-02-09 | Precision hole dill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01214098 CN2460245Y (en) | 2001-02-09 | 2001-02-09 | Precision hole dill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2460245Y true CN2460245Y (en) | 2001-11-21 |
Family
ID=33632927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01214098 Expired - Fee Related CN2460245Y (en) | 2001-02-09 | 2001-02-09 | Precision hole dill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2460245Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722217A (en) * | 2013-12-23 | 2014-04-16 | 无锡雨田精密工具有限公司 | Arc forming drill |
| CN102056693B (en) * | 2008-06-12 | 2014-05-14 | 钴碳化钨硬质合金公司 | Drill |
| CN110560753A (en) * | 2019-09-09 | 2019-12-13 | 常州机电职业技术学院 | Drilling and rolling combined forming cutter |
-
2001
- 2001-02-09 CN CN 01214098 patent/CN2460245Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056693B (en) * | 2008-06-12 | 2014-05-14 | 钴碳化钨硬质合金公司 | Drill |
| CN103722217A (en) * | 2013-12-23 | 2014-04-16 | 无锡雨田精密工具有限公司 | Arc forming drill |
| CN110560753A (en) * | 2019-09-09 | 2019-12-13 | 常州机电职业技术学院 | Drilling and rolling combined forming cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |