CN212239233U - Bidirectional chuck for irregular drill bit - Google Patents
Bidirectional chuck for irregular drill bit Download PDFInfo
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- CN212239233U CN212239233U CN201922468749.XU CN201922468749U CN212239233U CN 212239233 U CN212239233 U CN 212239233U CN 201922468749 U CN201922468749 U CN 201922468749U CN 212239233 U CN212239233 U CN 212239233U
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- chuck
- shaft hole
- drill bit
- slits
- irregular
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Abstract
The utility model relates to an irregular drill bit is with its characterized in that of two-way chuck, including first chuck, second chuck and connecting portion, first chuck and second chuck are located respectively the both ends of connecting portion run through between the center of first chuck and second chuck and are equipped with the shaft hole, and the shaft hole diameter in the first chuck is greater than shaft hole diameter in the second chuck, all set up a plurality of slits that run through with the shaft hole on the lateral wall on first chuck and the second chuck, a plurality of slits all set up along shaft hole direction align to grid, slit on the first chuck and the slit on the second chuck all extend to the lateral wall of connecting portion on, and be the dislocation distribution between the slit on the first chuck and the slit on the second chuck for all form a plurality of evenly distributed's clamping jaw on first chuck and the second chuck. The drill bit cutting edge is clamped by the two clamping heads, so that the contact area with the drill bit cutting edge can be effectively increased, the clamping effect of the spring clamping heads on the drill bit is effectively improved, and the stability of the drill bit during drilling is guaranteed.
Description
Technical Field
The utility model belongs to the technical field of the assembly of lathe cutter, concretely relates to irregular drill bit is with two-way chuck.
Background
The spring collet is a key part for connecting the tool and the machine tool, the spring collet is mainly used for assisting clamping when clamping a tool shank of the tool, when the tool shank is fixed, a taper cavity matched with a jacket at the rear end of the spring collet is arranged on a shank body of the tool shank, after the tool is clamped by a through hole in the middle of the spring collet, the spring collet is located in the taper cavity of the shank body, and the tool is tightened and positioned by matching a taper surface of the collet with a taper surface of the jacket. However, the existing tool such as a twist drill is generally provided with two cutting edges on the tool body, and when the traditional spring collet chuck is used for clamping the twist drill, the traditional spring collet chuck can only contact with the inner wall of the spring collet chuck through the cutting edges on the tool body of the twist drill; and its structure of current drill bit is irregular, and the diameter size at drill bit both ends is inconsistent, is the big little structure in rear end of front end, and when the centre gripping, can only press from both sides tightly its drill bit front end, and when drilling, the drill bit rear end can rock in the chuck, and current collet chuck can't effectually carry out the centre gripping, consequently needs one kind can carry out the chuck of centre gripping to irregular drill bit both ends.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to the above-mentioned problem, a two-way chuck is used to irregular drill bit is disclosed for it is little with the collet chuck contact surface to solve among the prior art drill bit, the problem that the drill bit rear end rocked in the collet chuck.
The specific technical scheme is as follows:
a bidirectional chuck for an irregular drill bit comprises a first chuck, a second chuck and a connecting part, wherein the first chuck and the second chuck are respectively positioned at two ends of the connecting part, a shaft hole is arranged between the centers of the first chuck and the second chuck in a penetrating way, the diameter of the shaft hole in the first chuck is larger than that of the shaft hole in the second chuck, a plurality of slits which are penetrated through the shaft hole are arranged on the side walls of the first chuck and the second chuck, the slits are uniformly arranged along the shaft hole direction, the slits on the first chuck and the slits on the second chuck extend to the side wall of the connecting part, and the slits on the first chuck and the slits on the second chuck are distributed in a staggered way, so that a plurality of clamping jaws which are uniformly distributed are formed on the first chuck and the second chuck, the contained angle is 90 degrees between connecting portion both ends and first chuck and the second chuck, and the diameter in the shaft hole in the connecting portion is greater than the shaft hole diameter in first chuck and the second chuck.
Further, the length of the first chuck, the length of the second chuck and the length of the connecting part are all consistent.
Furthermore, the inner wall of the shaft hole in the first chuck and the inner wall of the shaft hole of the second chuck are both provided with internal threads.
Furthermore, the first chuck and the second chuck are both in a conical structure.
Further, the width of the slit is 1.5 mm.
Furthermore, both ends of the shaft hole in the connecting part and the connection part of the shaft hole in the first chuck and the second chuck are obliquely arranged.
The utility model has the advantages that:
(1) the utility model discloses a two chucks can carry out the centre gripping to the both ends of drill bit respectively, when this collet chuck cooperation handle of a knife carries out the centre gripping to the drill bit, through two chucks to drill bit zone of cutting edge department centre gripping, can effectively increase with the area of contact of drill bit zone to effectively improve the effect of collet chuck to the centre gripping of drill bit, guaranteed the stability of drill bit when drilling.
(2) The utility model discloses well shaft hole diameter in the first chuck is greater than second chuck middle shaft hole diameter for first chuck advances the centre gripping to the drill bit front end fixed, and the second chuck can carry out the centre gripping to the rear end of drill bit, thereby guarantees the steadiness when the centre gripping to irregular drill bit, has avoided the drill bit rear end to rock in the collet chuck, and has improved the concentricity between drill bit and the collet chuck.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a side view of the present invention.
Fig. 3 is a cross-sectional view of the present invention.
Description of the reference numerals
The clamping device comprises a first clamping head 1, a second clamping head 2, a shaft hole 3, an internal thread 31, a slit 4, clamping jaws 5 and a connecting part 6.
Detailed Description
For making the technical scheme of the utility model clear more clearly and definitely, it is right to combine the drawing below the utility model discloses further describe, any is right the utility model discloses technical scheme's technical characteristic carries out the scheme that equivalent replacement and conventional reasoning reachs and all falls into the utility model discloses protection scope. The utility model discloses in the fixed connection who mentions, fixed setting is the general connected mode among the mechanical field, and welding, bolt and nut are connected and the screw connection is all can.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
A bidirectional chuck for an irregular drill bit comprises a first chuck, a second chuck and a connecting part, wherein the first chuck and the second chuck are respectively positioned at two ends of the connecting part and respectively clamp the front end and the rear end of the drill bit, a shaft hole is arranged between the centers of the first chuck and the second chuck in a penetrating manner, the diameter of the shaft hole in the first chuck is larger than that of the shaft hole in the second chuck, 3 slits penetrating through the shaft hole are respectively formed in the side walls of the first chuck and the second chuck, the 3 slits are uniformly arranged along the shaft hole direction, the slits in the first chuck and the slits in the second chuck extend to the side wall of the connecting part, and the slits in the first chuck and the slits in the second chuck are distributed in a staggered manner, so that 3 clamping jaws which are uniformly distributed are respectively formed on the first chuck and the second chuck; the diameter of connecting portion is 28mm, and the contained angle is 90 degrees between connecting portion both ends and first chuck and the second chuck, and the diameter in the shaft hole in the connecting portion is 22mm, is greater than the shaft hole diameter in first chuck and the second chuck.
Further, the length of the first chuck, the length of the second chuck and the length of the connecting part are all 25 mm.
Furthermore, all be equipped with the internal thread on the shaft hole inner wall in the first chuck and on the shaft hole inner wall of second chuck to can increase the frictional force of shaft hole inner wall and drill bit.
Furthermore, the first chuck and the second chuck are both in a conical structure.
Further, the width of the slit is 1.5 mm.
Furthermore, both ends of the shaft hole in the connecting part and the connection part of the shaft hole in the first chuck and the second chuck are obliquely arranged.
The utility model has the advantages that:
(1) the utility model discloses a two chucks can carry out the centre gripping to the both ends of drill bit respectively, when this collet chuck cooperation handle of a knife carries out the centre gripping to the drill bit, through two chucks to drill bit zone of cutting edge department centre gripping, can effectively increase with the area of contact of drill bit zone to effectively improve the effect of collet chuck to the centre gripping of drill bit, guaranteed the stability of drill bit when drilling.
(2) The utility model discloses well shaft hole diameter in the first chuck is greater than second chuck middle shaft hole diameter for first chuck advances the centre gripping to the drill bit front end fixed, and the second chuck can carry out the centre gripping to the rear end of drill bit, thereby guarantees the steadiness when the centre gripping to irregular drill bit, has avoided the drill bit rear end to rock in the collet chuck, and has improved the concentricity between drill bit and the collet chuck.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A bidirectional chuck for an irregular drill bit is characterized by comprising a first chuck, a second chuck and a connecting part, wherein the first chuck and the second chuck are respectively positioned at two ends of the connecting part, a shaft hole penetrates through the centers of the first chuck and the second chuck, the diameter of the shaft hole in the first chuck is larger than that of the shaft hole in the second chuck, a plurality of slits penetrating through the shaft hole are formed in the side walls of the first chuck and the second chuck and are uniformly arranged along the shaft hole direction, the slits in the first chuck and the slits in the second chuck extend to the side wall of the connecting part, the slits in the first chuck and the slits in the second chuck are distributed in a staggered manner, so that a plurality of clamping jaws which are uniformly distributed are formed on the first chuck and the second chuck, and included angles between two ends of the connecting part and the first chuck and the second chuck are 90 degrees, and the diameter of the shaft hole in the connecting portion is larger than the diameter of the shaft holes in the first and second chucks.
2. The bi-directional chuck for irregular drilling bits as claimed in claim 1, wherein the length of the first chuck, the length of the second chuck and the length of the connecting portion are all the same.
3. The bi-directional chuck for an irregular drill according to claim 1, wherein the inner wall of the axial bore of the first chuck and the inner wall of the axial bore of the second chuck are internally threaded.
4. The bi-directional chuck for irregular drill bits as set forth in claim 1, wherein the first and second chucks are each of a tapered configuration.
5. The bi-directional chuck for irregular drill bits as set forth in claim 1, wherein the width of the slit is 1.5 mm.
6. The bi-directional chuck for an irregular drill according to claim 1, wherein both ends of the axial hole in the connecting portion are inclined to the connection portions of the axial holes in the first chuck and the second chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468749.XU CN212239233U (en) | 2019-12-31 | 2019-12-31 | Bidirectional chuck for irregular drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468749.XU CN212239233U (en) | 2019-12-31 | 2019-12-31 | Bidirectional chuck for irregular drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212239233U true CN212239233U (en) | 2020-12-29 |
Family
ID=73973039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922468749.XU Active CN212239233U (en) | 2019-12-31 | 2019-12-31 | Bidirectional chuck for irregular drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212239233U (en) |
-
2019
- 2019-12-31 CN CN201922468749.XU patent/CN212239233U/en active Active
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| GR01 | Patent grant | ||
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