CN203679785U - Self-locking worm loose-preventing high-precision fine adjustment clamp - Google Patents
Self-locking worm loose-preventing high-precision fine adjustment clamp Download PDFInfo
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- CN203679785U CN203679785U CN201320814105.1U CN201320814105U CN203679785U CN 203679785 U CN203679785 U CN 203679785U CN 201320814105 U CN201320814105 U CN 201320814105U CN 203679785 U CN203679785 U CN 203679785U
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- fixed block
- clamping fixture
- fixture seat
- connecting rod
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Abstract
The utility model discloses a self-locking worm loose-preventing high-precision fine adjustment clamp, and belongs to the field of clamps. The self-locking worm loose-preventing high-precision fine adjustment clamp comprises a clamp base, a left fixing block, a left screw, a left clamping block, a right clamping block, a guide rod and a right fixing block, wherein a dovetail groove is formed in the clamp base; the left fixing block and the right fixing block are arranged at the two ends of the dovetail groove; the self-locking worm loose-preventing high-precision fine adjustment clamp further comprises a driven connecting rod, a left spring, a driving connecting rod, a right spring, a transmission rod, a right screw, a handle and limitative loose-preventing devices; one limitative loose-preventing device is arranged on each of the right screw and the left screw; one end of the driven connecting rod is hinged to the clamp base; the other end of the driven connecting rod is connected with the driving connecting rod through the transmission rod; and one end of the driven connecting rod, near a hinge, is connected with the guide rod. The self-locking worm loose-preventing high-precision fine adjustment clamp solves the problems that the conventional clamp has difficulty in fine adjustment and poor positioning precision and easily loosens, and has the advantages of simple structure, reasonable design and simplicity in manufacture.
Description
Technical field
The invention belongs to fixture field, more particularly, relate to a kind of worm screw automatic locking anti-loosing high precision fine tuning fixture for piece-holder.
Background technology
In machine industry, utilize lathe to process all kinds of workpiece, utilize clamping device that workpiece is fixed adding man-hour requirement, thereby realize cylindrical, end face, screw thread and the axial machining such as cut-out.For the not high part of machining accuracy, generally can directly on platen face, adjust and realize positioning and clamping, the position of part is determined in the setting that by machining coordinate is then.And for the higher workpiece of requirement on machining accuracy, must repeatedly proofread the relative position of workpiece and lathe tool, therefore must increase positioning precision.Plain clamp can not be finely tuned simultaneously, causes the control of clamping force to be difficult for, and too pine does not have positioning action, too tightly damages surface of the work, even compression failure workpiece.The vibration of lathe and the effect of cutting force in process simultaneously, causes fixture to occur loosening, and then because piece-holder power causes the loosening of workpiece not, has reduced machining accuracy, when serious, will cause workpiece to be thrown out of the generation of accident.
Summary of the invention
The fine setting that causes for existing fixture is difficult for, positioning precision is not high, easy loosening problem, the invention provides a kind of worm screw automatic locking anti-loosing high precision fine tuning fixture.
For addressing the above problem, the present invention adopts following technical scheme.
A kind of worm screw automatic locking anti-loosing high precision fine tuning fixture, comprise clamping fixture seat, left fixed block, left screw rod, left clamp, right clamp, guide rod, right fixed block, on clamping fixture seat, be provided with dovetail groove, and be provided with left fixed block and right fixed block at dovetail groove two ends, left fixed block is provided with screwed hole, right fixed block is provided with unthreaded hole, left clamp and right clamp are all assemblied in the dovetail groove on clamping fixture seat, left screw rod one end and left clamp are connected, the threaded engagement of the other end and left fixed block, guide rod one end and right clamp are connected, the other end is assemblied in the unthreaded hole of right fixed block, also comprise follower link, left spring, drive connecting rod, right spring, transmission lever, right screw rod, worm screw self-locking anti-loosing device, on described right screw rod and left screw rod, be equipped with worm screw self-locking anti-loosing device, one end of described follower link is articulated with on clamping fixture seat, the other end is connected with drive connecting rod by transmission lever, its one end near hinge is connected with guide rod, described drive connecting rod one end is articulated with on clamping fixture seat, the other end is connected with right screw rod, described right screw rod is assemblied in the screwed hole of clamping fixture seat, and in its one end, handle is set, described left spring one end is connected with follower link upper end, the other end is connected with clamping fixture seat, described right spring one end is connected with drive connecting rod lower end, the other end is connected with clamping fixture seat.
Described worm screw self-locking anti-loosing device is made up of worm gear and worm screw, and described worm gear is assemblied on left screw rod by key, and described worm screw is assemblied in clamping fixture seat by rolling bearing, and is meshed with worm gear.
The angle of spiral of described worm screw is less than the equivalent friction angle of the field of conjugate action of itself and worm gear.
Than prior art, beneficial effect of the present invention is:
(1) the present invention utilizes lever principle, and larger input is converted into minimum displacement, and the convenient trace of realizing regulates, and makes positioning precision be improved simultaneously.
(2) the present invention utilizes worm geared self-locking performance to realize the locking of fixture, locking reliable and compact conformation.
(3) when the present invention adopts worm-drive locking, because worm geared gearratio is large, can produce minimum output with the input compared with large, therefore be conducive to the clamping fine setting of fixture, thereby make positioning precision higher.
(4) the present invention is simple in structure, reasonable in design, is easy to manufacture.
Accompanying drawing explanation
Fig. 1 is front view of the present invention;
Fig. 2 is the cutaway view along A-A line in Fig. 1;
Fig. 3 is the cutaway view along B-B line in Fig. 1.
In figure: 1-clamping fixture seat, 2-left fixed block, 3-left screw rod, 4-left clamp, 5-right clamp, 6-guide rod, 7-right fixed block, 8-follower link, 9-left spring, 10-drive connecting rod, 11-right spring, 12-transmission lever, 13-right screw rod, 14-worm screw self-locking anti-loosing device, 15-worm gear, 16-worm screw.
The specific embodiment
Describe the present invention below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2, shown in Fig. 3, worm screw automatic locking anti-loosing high precision fine tuning fixture comprises clamping fixture seat 1, left fixed block 2, left screw rod 3, left clamp 4, right clamp 5, guide rod 6, right fixed block 7, on clamping fixture seat 1, be provided with dovetail groove, and be provided with left fixed block 2 and right fixed block 7 at dovetail groove two ends, left fixed block 2 is provided with screwed hole, right fixed block 7 is provided with unthreaded hole, left clamp 4 and right clamp 5 are all assemblied in the dovetail groove on clamping fixture seat 1, left screw rod 3 one end and left clamp 4 are connected, the threaded engagement of the other end and left fixed block 2, guide rod 6 one end and right clamp 5 are connected, the other end is assemblied in the unthreaded hole of right fixed block 7, also comprise follower link 8, left spring 9, drive connecting rod 10, right spring 11, transmission lever 12, right screw rod 13, worm screw self-locking anti-loosing device 14, on described right screw rod 13 and left screw rod 3, be equipped with worm screw self-locking anti-loosing device 14, one end of described follower link 8 is articulated with on clamping fixture seat 1, the other end is connected with drive connecting rod 10 by transmission lever 12, its one end near hinge is connected with guide rod 6, described drive connecting rod 10 one end are articulated with on clamping fixture seat 1, the other end is connected with right screw rod 13, described right screw rod 13 is assemblied in the screwed hole of clamping fixture seat 1, and in its one end, handle 14 is set, described left spring 9 one end are connected with follower link 8 upper ends, the other end is connected with clamping fixture seat 1, described right spring 11 one end are connected with drive connecting rod 10 lower ends, the other end is connected with clamping fixture seat 1.
Described worm screw self-locking anti-loosing device 14 is made up of worm gear 15 and worm screw 16, and described worm gear 15 is assemblied on left screw rod 3 by key, and described worm screw 16 is assemblied in clamping fixture seat 1 by rolling bearing, and is meshed with worm gear 15.
The angle of spiral of described worm screw 16 is less than the equivalent friction angle of the field of conjugate action of itself and worm gear 15.
As Fig. 1, Fig. 2, shown in Fig. 3, worm screw automatic locking anti-loosing high precision fine tuning fixture comprises clamping fixture seat 1, left fixed block 2, left screw rod 3, left clamp 4, right clamp 5, guide rod 6, right fixed block 7, on clamping fixture seat 1, be provided with dovetail groove, and be provided with left fixed block 2 and right fixed block 7 at dovetail groove two ends, left fixed block 2 is provided with screwed hole, right fixed block 7 is provided with unthreaded hole, left clamp 4 and right clamp 5 are all assemblied in the dovetail groove on clamping fixture seat 1, left screw rod 3 one end and left clamp 4 are connected, the threaded engagement of the other end and left fixed block 2, guide rod 6 one end and right clamp 5 are connected, the other end is assemblied in the unthreaded hole of right fixed block 7, also comprise follower link 8, left spring 9, drive connecting rod 10, right spring 11, transmission lever 12, right screw rod 13, worm screw self-locking anti-loosing device 14, on described right screw rod 13 and left screw rod 3, be equipped with worm screw self-locking anti-loosing device 14, one end of described follower link 8 is articulated with on clamping fixture seat 1, the other end is connected with drive connecting rod 10 by transmission lever 12, its one end near hinge is connected with guide rod 6, described drive connecting rod 10 one end are articulated with on clamping fixture seat 1, the other end is connected with right screw rod 13, described right screw rod 13 is assemblied in the screwed hole of clamping fixture seat 1, and in its one end, handle 14 is set, described left spring 9 one end are connected with follower link 8 upper ends, the other end is connected with clamping fixture seat 1, described right spring 11 one end are connected with drive connecting rod 10 lower ends, the other end is connected with clamping fixture seat 1.
Described worm screw self-locking anti-loosing device 14 is made up of worm gear 15 and worm screw 16, and described worm gear 15 is assemblied on left screw rod 3 by key, and described worm screw 16 is assemblied in clamping fixture seat 1 by rolling bearing, and is meshed with worm gear 15.
The angle of spiral of described worm screw 16 is 12 °, and the equivalent friction angle of the field of conjugate action of itself and worm gear 15 is 15 °.
As Fig. 1, Fig. 2, shown in Fig. 3, worm screw automatic locking anti-loosing high precision fine tuning fixture comprises clamping fixture seat 1, left fixed block 2, left screw rod 3, left clamp 4, right clamp 5, guide rod 6, right fixed block 7, on clamping fixture seat 1, be provided with dovetail groove, and be provided with left fixed block 2 and right fixed block 7 at dovetail groove two ends, left fixed block 2 is provided with screwed hole, right fixed block 7 is provided with unthreaded hole, left clamp 4 and right clamp 5 are all assemblied in the dovetail groove on clamping fixture seat 1, left screw rod 3 one end and left clamp 4 are connected, the threaded engagement of the other end and left fixed block 2, guide rod 6 one end and right clamp 5 are connected, the other end is assemblied in the unthreaded hole of right fixed block 7, also comprise follower link 8, left spring 9, drive connecting rod 10, right spring 11, transmission lever 12, right screw rod 13, worm screw self-locking anti-loosing device 14, on described right screw rod 13 and left screw rod 3, be equipped with worm screw self-locking anti-loosing device 14, one end of described follower link 8 is articulated with on clamping fixture seat 1, the other end is connected with drive connecting rod 10 by transmission lever 12, its one end near hinge is connected with guide rod 6, described drive connecting rod 10 one end are articulated with on clamping fixture seat 1, the other end is connected with right screw rod 13, described right screw rod 13 is assemblied in the screwed hole of clamping fixture seat 1, and in its one end, handle 14 is set, described left spring 9 one end are connected with follower link 8 upper ends, the other end is connected with clamping fixture seat 1, described right spring 11 one end are connected with drive connecting rod 10 lower ends, the other end is connected with clamping fixture seat 1.
Described worm screw self-locking anti-loosing device 14 is made up of worm gear 15 and worm screw 16, and described worm gear 15 is assemblied on left screw rod 3 by key, and described worm screw 16 is assemblied in clamping fixture seat 1 by rolling bearing, and is meshed with worm gear 15.
The angle of spiral of described worm screw 16 is 11 °, and the equivalent friction angle of the field of conjugate action of itself and worm gear 15 is 13 °.
Claims (3)
1. a worm screw automatic locking anti-loosing high precision fine tuning fixture, comprise clamping fixture seat (1), left fixed block (2), left screw rod (3), left clamp (4), right clamp (5), guide rod (6), right fixed block (7), clamping fixture seat is provided with dovetail groove on (1), and be provided with left fixed block (2) and right fixed block (7) at dovetail groove two ends, left fixed block (2) is provided with screwed hole, right fixed block (7) is provided with unthreaded hole, left clamp (4) and right clamp (5) are all assemblied in the dovetail groove on clamping fixture seat (1), left screw rod (3) one end and left clamp (4) are connected, the threaded engagement of the other end and left fixed block (2), guide rod (6) one end and right clamp (5) are connected, the other end is assemblied in the unthreaded hole of right fixed block (7), it is characterized in that, also comprise follower link (8), left spring (9), drive connecting rod (10), right spring (11), transmission lever (12), right screw rod (13), worm screw self-locking anti-loosing device (14), on described right screw rod (13) and left screw rod (3), be equipped with worm screw self-locking anti-loosing device (14), one end of described follower link (8) is articulated with on clamping fixture seat (1), the other end is connected with drive connecting rod (10) by transmission lever (12), its one end near hinge is connected with guide rod (6), described drive connecting rod (10) one end is articulated with on clamping fixture seat (1), the other end is connected with right screw rod (13), described right screw rod (13) is assemblied in the screwed hole of clamping fixture seat (1), and handle (14) is set in its one end, described left spring (9) one end is connected with follower link (8) upper end, the other end is connected with clamping fixture seat (1), described right spring (11) one end is connected with drive connecting rod (10) lower end, the other end is connected with clamping fixture seat (1).
2. worm screw automatic locking anti-loosing high precision fine tuning fixture according to claim 1, it is characterized in that, described worm screw self-locking anti-loosing device (14) is made up of worm gear (15) and worm screw (16), described worm gear (15) is assemblied on left screw rod (3) by key, described worm screw (16) is assemblied in clamping fixture seat (1) by rolling bearing, and is meshed with worm gear (15).
3. worm screw automatic locking anti-loosing high precision fine tuning fixture according to claim 2, is characterized in that, the angle of spiral of described worm screw (16) is less than the equivalent friction angle of the field of conjugate action of itself and worm gear (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320814105.1U CN203679785U (en) | 2013-12-12 | 2013-12-12 | Self-locking worm loose-preventing high-precision fine adjustment clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320814105.1U CN203679785U (en) | 2013-12-12 | 2013-12-12 | Self-locking worm loose-preventing high-precision fine adjustment clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203679785U true CN203679785U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320814105.1U Expired - Fee Related CN203679785U (en) | 2013-12-12 | 2013-12-12 | Self-locking worm loose-preventing high-precision fine adjustment clamp |
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| CN (1) | CN203679785U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753254A (en) * | 2013-12-12 | 2014-04-30 | 芜湖市天雄新材料科技有限公司 | Worm self-locking anti-loose type high-precision fine adjusting clamp |
-
2013
- 2013-12-12 CN CN201320814105.1U patent/CN203679785U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753254A (en) * | 2013-12-12 | 2014-04-30 | 芜湖市天雄新材料科技有限公司 | Worm self-locking anti-loose type high-precision fine adjusting clamp |
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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: 20140702 Termination date: 20141212 |
|
| EXPY | Termination of patent right or utility model |