CN204135358U - lathe three-claw - Google Patents
lathe three-claw Download PDFInfo
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- CN204135358U CN204135358U CN201420477967.4U CN201420477967U CN204135358U CN 204135358 U CN204135358 U CN 204135358U CN 201420477967 U CN201420477967 U CN 201420477967U CN 204135358 U CN204135358 U CN 204135358U
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- claw
- standby cap
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Abstract
The utility model provides lathe three-claw, belongs to field of mechanical technique.It solve the problem that existing lathe three-claw easily ruptures.This lathe three-claw, comprise all in tubular and be respectively used to fixing with lathe spindle and trombone slide before standby cap and standby cap, front standby cap and standby cap are coaxially arranged, this three-jaw also comprises three claws, front standby cap is all stretched out in the outer end of claw, the inner of claw has projection one, standby cap has the groove with projection one mating shapes, the projection one of claw is positioned at groove, claw the inner also has the projection two stretched out to claw sidepiece, and when claw with projection one for spot wobble time, before standby cap also promoting before described projection two can be resisted against, standby cap moves toward the direction away from standby cap.In this lathe three-claw, because claw is directly swung with coordinating of annular groove on standby cap by projection one, avoid processing through hole on claw so that claw in use ruptures, therefore improve the stability of lathe three-claw structure.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of lathe three-claw.
Background technology
Lathe have a hollow main shaft and be positioned at inner trombone slide, trombone slide can move around in main shaft.The effect of lathe three-claw on lathe drives trombone slide to move exactly, to clamp the chuck being positioned at trombone slide end.
Such as, Chinese utility model patent (application number: 201220512671.2, Authorization Notice No.: CN 202894381 U) disclose a kind of instrument three jaws, in this three-jaw, front standby cap is installed on an end face of standby cap, front standby cap and standby cap are coaxially set, the other end of standby cap be installed with lock nut or one-body moldedly have lock nut, lock nut and front standby cap, standby cap is coaxially set, on standby cap and front standby cap, all circumference is arranged at intervals with three grooves, groove one_to_one corresponding on groove on standby cap and front standby cap, one end of claw is articulated and connected in the groove of standby cap, the other end is arranged on outside front standby cap through the groove of front standby cap, front standby cap, standby cap and lock nut be provided with coaxial line, mutually through endoporus.
When using three-jaw, front standby cap is fixed on main shaft, standby cap is fixed trombone slide upper.After other parts on lathe strut three claws, front standby cap and standby cap are separated, and trombone slide is extracted out to strain chuck by standby cap, realizes clamping function.
In this three-jaw, claw offers through hole to realize claw wobbling action.In actual production, the lead to the hole site that each claw processes is different.Therefore, when three claws with the use of time, may there are three claws simultaneously will the situation of clamping, and when main shaft High Rotation Speed, the shake that three-jaw produces is comparatively serious, and lathe sends larger noise.In addition, due to perforate on claw, in use also there is the phenomenon of easily fracture in claw, and its structure is comparatively unstable.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes the lathe three-claw that a kind of structure is comparatively stable.
The purpose of this utility model realizes by following technical proposal:
A kind of lathe three-claw, comprise all in tubular and be respectively used to fixing with lathe spindle and trombone slide before standby cap and standby cap, described front standby cap and standby cap are coaxially arranged, this three-jaw also comprises three claws, front standby cap is all stretched out in the outer end of described claw, it is characterized in that, the inner of described claw has projection one, described standby cap has the groove with projection one mating shapes, the projection one of described claw is positioned at groove, described claw the inner also has the projection two stretched out to claw sidepiece, described projection two is front standby between cap and standby cap, and when described claw with projection one for spot wobble time, for on the inner of cap before described projection two can be resisted against, described projection one can be resisted against on the inner of standby cap.
In this lathe three-claw, claw is directly resisted against the groove in standby cap by projection one, and due to projection one and the mating shapes of groove, claw can rotate around the contact position between projection one and front standby cap.Such structure avoids processes through hole on claw, improves the stability of claw structure, makes lathe three-claw in use, not easy fracture, thus makes the structural stability of this lathe three-claw higher.
During use, promote the clutch tapered sleeve on lathe, strut three claws, claw rotates around the contact position between projection one and front standby cap, and in the process, before the projection two on claw is resisted against, standby cap drives standby cap away from front for cap.Because general main shaft is all axial restraint, now, standby hatband moves trombone slide and moves, thus clamping collet.
Owing to this lathe three-claw avoiding processing through hole, therefore, the symmetry of three claws is better, three claws and other part fits of lathe also comparatively closely, make lathe when running up, noise is less.
Certainly, as a kind of replacement scheme easily expected, can arrange groove on claw, and on standby cap, be arranged at the projection that claw upper groove matches, such structure also can realize the swing of claw.
In above-mentioned lathe three-claw, this lathe three-claw also comprises reset assembly and standby cap has the trend near front standby cap under the effect of reset assembly.When unclamping the clutch tapered sleeve on lathe, under the effect of reset assembly, standby cap moves toward the direction near front standby cap, and the hatband of standby simultaneously moves trombone slide and moves, and unclamps chuck, easy to use.
In above-mentioned lathe three-claw, described reset assembly comprises bolt and spring, described bolt is through standby cap, bolt comprises head and the threaded threaded shank of tool, before described threaded shank is fixed on standby cap, described spring housing is located on bolt and the two ends of spring and is resisted against on bolt head and standby cap respectively, and the equal and corresponding cooperation of the quantity of described bolt and spring, the quantity of described bolt is at least three and uniform ring is located on standby cap.Arrange at least three bolts to coordinate with spring, before making, standby relative movement between cap and standby cap is comparatively steady, improves the structural stability during work of this lathe three-claw.
As the another kind of scheme of reset assembly, in above-mentioned lathe three-claw, described reset assembly comprises the stage clip be fixed on standby cap, and the axis being parallel of stage clip is in the axis of standby cap.In use, utilize other parts on lathe to promote stage clip, make standby cap near front standby cap, thus unclamp lathe dog.
In above-mentioned lathe three-claw, described front standby cap comprises body and is positioned at body and back-up ring in the form of a ring, described body has the internal thread for connecting main shaft, described back-up ring is positioned at body, and when described claw with projection one for spot wobble time, described projection two can be resisted against on back-up ring, and drives back-up ring to be resisted against on body, and the internal diameter of described back-up ring is less than the internal diameter of front standby cap body.Stretch into the length of body part by adjustment main shaft, main shaft can be made to be resisted against on back-up ring and make back-up ring promote the projection two of claw, thus the amount of tightening that adjustment claw is initial, easy to use.
In above-mentioned lathe three-claw, described standby cap has tubular guide part one, described front standby cap has tubular guide part two, described guide part one and the coaxial and sidewall of guide part one of guide part two recline mutually with the sidewall of guide part two.Arrange guide part one and guide part two, in the process of front standby cap and the relative movement of standby cap, guide part one reclines with guide part always mutually, and before making, standby relative movement between cap and standby cap is comparatively stable, thus improves the stability of this lathe three-claw structure.
Compared with prior art, in this lathe three-claw, because claw is directly swung with coordinating of standby cap upper groove by projection one, avoid processing through hole on claw so that claw in use ruptures, therefore improve the stability of lathe three-claw structure.
Accompanying drawing explanation
Fig. 1 is this lathe three-claw stereogram;
Fig. 2 is the sectional view of this lathe three-claw;
Fig. 3 is the stereogram of standby cap;
Fig. 4 is the stereogram of claw;
Fig. 5 is the sectional view of reset assembly part;
Fig. 6 is the sectional view of standby cap and front standby cap.
In figure, 1, front standby cap; 1a, guide part two; 2, standby cap; 2a, groove; 2b, guide part one; 3, claw; 3a, projection one; 3b, projection two; 4, bolt; 4a, head; 4b, threaded shank; 5, spring; 6, back-up ring.
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As depicted in figs. 1 and 2, this lathe three-claw, comprise all in tubular and be respectively used to fixing with main shaft and trombone slide before standby cap 1 and standby cap 2, front standby cap 1 and standby cap 2 are coaxially arranged, the outer end of three claws 3 stretch out before standby cap 1.
Wherein, front standby cap 1 comprises body and is positioned at intrinsic back-up ring 6, and the internal diameter of back-up ring is less than the internal diameter of front standby cap 1 body.Body has the internal thread for connecting main shaft, back-up ring 6 is positioned at body, and when claw 3 with projection one 3a for spot wobble time, projection two 3b to be resisted against on back-up ring 6 and to drive back-up ring against 6 on body.Stretch into the length of body part by adjustment main shaft, main shaft can be made to be resisted against on back-up ring 6 and make back-up ring 6 promote projection two 3b of claw 3, thus the amount of tightening that adjustment claw 3 is initial, easy to use.
In order to front standby relative movement between cap 1 and standby cap 2 is comparatively stable, thus improve the stability of this lathe three-claw structure, as shown in Figure 6, standby cap 2 has tubular guide part one 2b near an end of front standby cap 1, before standby cap 1 has tubular guide part two 1a near an end of standby cap 2, the coaxial and madial wall of guide part one 2b of guide part one 2b and guide part two 1a reclines mutually with the lateral wall of guide part two 1a.
As shown in Figure 4, the inner of claw 3 has projection one 3a, and the downside of projection one 3a is curved.As Fig. 3 standby cap 2 having the groove 2a with projection one 3a mating shapes, projection one 3a of claw 3 is positioned at the groove 2a in annular, and the shape at the groove 2a place on standby cap 2 is the cambered surface matched with projection one 3a surface.Claw 3 the inner also has projection two 3b stretched out to claw 3 sidepiece, and when claw 3 with projection one 3a for spot wobble time, before projection two 3b can be resisted against, standby cap 1 moves toward the direction away from standby cap 2 on standby cap 1 and before promoting.Certainly, as a kind of replacement scheme easily expected, can arrange groove on claw 3, and on standby cap 2, be arranged at the projection that claw 3 upper groove matches, such structure also can realize the swing of claw 3.
This three-jaw also comprise be provided for standby cap 2 have always near front standby cap 1 trend reset assembly.Shown in Fig. 5, the spring 5 that reset assembly comprises bolt 4 and is set on bolt 4.Bolt 4 comprises head 4a and the threaded threaded shank 4b of tool.Wherein, before bolt 4 is fixed on through standby cap 2, threaded shank 4b screw thread on standby cap 1, spring 5 is set on the bolt 4 and two ends of spring 5 and is resisted against respectively on bolt 4 head 4a and standby cap 2.In this lathe three-claw, have three pairs of bolts 4 and spring 5, before making, standby relative movement between cap 1 and standby cap 2 is comparatively steady, improves the structural stability during work of this lathe three-claw.According to different needs, bolt 4 and spring 5 can be set to six to or more.As the another kind of scheme of reset assembly, reset assembly comprises the stage clip be fixed on standby cap 2, and the axis being parallel of stage clip is arranged in the axis of standby cap 2.In use, utilize other parts on lathe to promote stage clip, standby cap 2 is moved near the direction of front standby cap 1, thus unclamps lathe dog.
In this lathe three-claw, the groove 2a place before claw 3 is directly resisted against by projection one 3a in standby cap 1, due to the mating shapes of projection one 3a and groove 2a, claw 3 can rotate around the contact surface between projection one 3a and front standby cap 1.Such structure avoids processes through hole on claw 3, improves the stability of claw 3 structure, makes lathe three-claw in use, claw 3 not easy fracture, thus makes the structural stability of this lathe three-claw higher.
Now the use procedure of this lathe three-claw is described below:
During use, promote the clutch tapered sleeve on lathe, strut three claws 3, claw 3 rotates around the contact surface between projection one 3a and front standby cap 1, and in the process, before standby cap 1 also promoting before projection two 3b on claw 3 is resisted against, standby cap 1 moves toward the direction away from standby cap 2 relative to standby cap 2, because general main shaft is all axial restraint, now, standby cap 2 drives trombone slide to move, thus clamping collet.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although the term such as standby cap 1, guide part two 1a, standby cap 2, groove 2a, guide part one 2b, claw 3, projection one 3a, projection two 3b, bolt 4, head 4a, threaded shank 4b, spring 5, back-up ring 6, does not get rid of the possibility using other term before more employing herein.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (6)
1. a lathe three-claw, comprise all in tubular and be respectively used to fixing with lathe spindle and trombone slide before standby cap (1) and standby cap (2), described front standby cap (1) and standby cap (2) are coaxially arranged, this three-jaw also comprises three claws (3), front standby cap (1) is all stretched out in the outer end of described claw (3), it is characterized in that, the inner of described claw (3) has projection one (3a), described standby cap (2) has the groove (2a) with projection one (3a) mating shapes, the projection one (3a) of described claw (3) is positioned at groove (2a), described claw (3) the inner also has the projection two (3b) stretched out to claw (3) sidepiece, it is standby between cap (1) and standby cap (2) before described projection two (3b) is positioned at, and when described claw (3) with projection one (3a) for spot wobble time, for on the inner of cap (1) before described projection two (3b) can be resisted against, described projection one (3a) can be resisted against on the inner of standby cap (2).
2. lathe three-claw according to claim 1, is characterized in that, this lathe three-claw also comprises reset assembly and standby cap (2) has the trend near front standby cap (1) under the effect of reset assembly.
3. lathe three-claw according to claim 2, it is characterized in that, described reset assembly comprises bolt (4) and spring one (5), described bolt (4) is through standby cap (2), bolt (4) comprises head (4a) and the threaded threaded shank of tool (4b), before described threaded shank (4b) is fixed on standby cap (1), described spring one (5) is set in that bolt (4) is upper and the two ends of spring one (5) are resisted against on bolt (4) head (4a) and standby cap (2) respectively, equal and the corresponding cooperation of the quantity of described bolt (4) and spring one (5), the quantity of described bolt (4) is at least three and uniform ring is located on standby cap (2).
4. lathe three-claw according to claim 2, is characterized in that, described reset assembly comprises one end and is fixed on stage clip on standby cap (2), and the axis being parallel of stage clip is in the axis of standby cap (2).
5. the lathe three-claw according to claim 1 or 2 or 3, it is characterized in that, described front standby cap (1) comprises body and is positioned at body and back-up ring (6) in the form of a ring, described body has the internal thread for connecting main shaft, described back-up ring (6) is positioned at body, and when described claw (3) with projection one (3a) for spot wobble time, described projection two (3b) can be resisted against back-up ring (6) and goes up and drive back-up ring (6) to be resisted against on body, and the internal diameter of described back-up ring (6) is less than the internal diameter of front standby cap (1) body.
6. the lathe three-claw according to claim 1 or 2 or 3, it is characterized in that, described standby cap (2) has tubular guide part one (2b), described front standby cap (1) has tubular guide part two (1a), described guide part one (2b) and guide part two (1a) coaxially and the sidewall of guide part one (2b) recline mutually with the sidewall of guide part two (1a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420477967.4U CN204135358U (en) | 2014-08-23 | 2014-08-23 | lathe three-claw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420477967.4U CN204135358U (en) | 2014-08-23 | 2014-08-23 | lathe three-claw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204135358U true CN204135358U (en) | 2015-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420477967.4U Active CN204135358U (en) | 2014-08-23 | 2014-08-23 | lathe three-claw |
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| Country | Link |
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| CN (1) | CN204135358U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077769A (en) * | 2016-08-03 | 2016-11-09 | 苏州市吴中区木渎晓云模具加工厂 | First three-jaw adapter of valve upper cover processing line |
-
2014
- 2014-08-23 CN CN201420477967.4U patent/CN204135358U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077769A (en) * | 2016-08-03 | 2016-11-09 | 苏州市吴中区木渎晓云模具加工厂 | First three-jaw adapter of valve upper cover processing line |
| CN106077769B (en) * | 2016-08-03 | 2018-03-16 | 陈斌 | First three-jaw connector of valve upper cover processing line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220517 Address after: 317600 Yucheng street, Yuhuan City, Taizhou City, Zhejiang Province Patentee after: Yuliang Yuhuan Machinery Co.,Ltd. Address before: 317600 Taizhou Zhengchuan Machine Tool Fittings Co., Ltd., qiantangyang Industrial Zone, Yuhuan County, Taizhou City, Zhejiang Province Patentee before: Li Cunliang |
|
| TR01 | Transfer of patent right |