CN203726196U - High precision fine tuning clamp employing pawls for preventing looseness - Google Patents

High precision fine tuning clamp employing pawls for preventing looseness Download PDF

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Publication number
CN203726196U
CN203726196U CN201320814207.3U CN201320814207U CN203726196U CN 203726196 U CN203726196 U CN 203726196U CN 201320814207 U CN201320814207 U CN 201320814207U CN 203726196 U CN203726196 U CN 203726196U
Authority
CN
China
Prior art keywords
fixed block
spring
clamp
ratchet
screw rod
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
Application number
CN201320814207.3U
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Chinese (zh)
Inventor
黄雄关
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUHU TIANXIONG PLASTIC SCIENCE & TECHNOLOGY Co Ltd
Original Assignee
WUHU TIANXIONG PLASTIC SCIENCE & TECHNOLOGY Co Ltd
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Application filed by WUHU TIANXIONG PLASTIC SCIENCE & TECHNOLOGY Co Ltd filed Critical WUHU TIANXIONG PLASTIC SCIENCE & TECHNOLOGY Co Ltd
Priority to CN201320814207.3U priority Critical patent/CN203726196U/en
Application granted granted Critical
Publication of CN203726196U publication Critical patent/CN203726196U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a high precision fine tuning clamp employing pawls for preventing looseness and belongs to the field of clamps. The high precision fine tuning clamp comprises a clamp base, a left fixed block, a left screw stem, a left clamping block, a right clamping block, a guide rod and a right fixed block. The clamp base is provided with a dovetail groove. The left fixed block and the right fixed block are arranged at the two ends of the dovetail groove. The clamp also comprises a driven connecting rod, a left spring, a driving connecting rod, a right spring, a transmission rod, a right screw stem, a handle, and looseness preventing pawl devices. The right screw stem and the left screw stem are provided with the looseness preventing pawl devices. One end of the driven connecting rod is hinged to the clamp base and the other end is connected with the driving connecting rod through the transmission rod. The end, which is close to a hinge, of the driven connecting rod is connected with the guide rod. The high precision fine tuning clamp solves the problems of difficulty in fine tuning, low locating precision and frequent looseness of the conventional clamp and has the advantages of simple structure, reasonable design and easy manufacture.

Description

Ratchet anti-loosing type high precision fine tuning fixture
Technical field
The invention belongs to fixture field, more particularly, relate to a kind of ratchet anti-loosing type 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 ratchet anti-loosing type high precision fine tuning fixture.
For addressing the above problem, the present invention adopts following technical scheme.
A kind of ratchet anti-loosing type 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, handle, ratchet locking device, on described right screw rod and left screw rod, be equipped with ratchet locking 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 ratchet locking device is made up of gear, outer ring, spring, ratchet, screw, described gear is assemblied on left screw rod by key, described outer ring is fixed on clamping fixture seat, and be provided with screwed hole and spring, one end of described ratchet is hinged on outer ring, other end linking springs, described screw is assemblied in the screwed hole of outer ring, and is pressed on ratchet.
Described left spring, right spring, spring are extension spring.
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 gear and ratchet to realize the locking effect to left screw rod and right screw rod, in the course of the work, the locking to screw rod due to gear and ratchet, has played the locking of screw rod, and then makes fixture can not occur becoming flexible because of the effect of vibration and cutting force.
(3) the present invention is simple in structure, reasonable in design, is easy to manufacture.
Brief description of the drawings
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-handle, 15-ratchet locking device, 16-gear, 17-outer ring, 18-spring, 19-ratchet, 20-screw.
Detailed description of the invention
Describe the present invention below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2, shown in Fig. 3, ratchet anti-loosing type 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, and left fixed block 2 is provided with screwed hole, and 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, and 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 comprises follower link 8, left spring 9, drive connecting rod 10, right spring 11, transmission lever 12, right screw rod 13, handle 14, ratchet locking device 15, on described right screw rod 13 and left screw rod 3, be equipped with ratchet locking device 15, 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, and described left spring 9 one end are connected with follower link 8 upper ends, and 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, and the other end is connected with clamping fixture seat 1.
Described ratchet locking device 15 is made up of gear 16, outer ring 17, spring 18, ratchet 19, screw 20, described gear 16 is assemblied on left screw rod 3 by key, described outer ring 17 is fixed on clamping fixture seat 1, and be provided with screwed hole and spring 18, one end of described ratchet 19 is hinged on outer ring 17, other end linking springs 18, described screw 20 is assemblied in the screwed hole of outer ring 17, and is pressed on ratchet 19.
Described left spring 9, right spring 11, spring 18 are extension spring.
embodiment 1
As Fig. 1, Fig. 2, shown in Fig. 3, ratchet anti-loosing type 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, and left fixed block 2 is provided with screwed hole, and 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, and 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 comprises follower link 8, left spring 9, drive connecting rod 10, right spring 11, transmission lever 12, right screw rod 13, handle 14, ratchet locking device 15, on described right screw rod 13 and left screw rod 3, be equipped with ratchet locking device 15, 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, and described left spring 9 one end are connected with follower link 8 upper ends, and 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, and the other end is connected with clamping fixture seat 1.
Described ratchet locking device 15 is made up of gear 16, outer ring 17, spring 18, ratchet 19, screw 20, described gear 16 is assemblied on left screw rod 3 by key, described outer ring 17 is fixed on clamping fixture seat 1, and be provided with screwed hole and spring 18, one end of described ratchet 19 is hinged on outer ring 17, other end linking springs 18, described screw 20 is assemblied in the screwed hole of outer ring 17, and is pressed on ratchet 19.
Described left spring 9, right spring 11, spring 18 are extension spring, and three's pitch is identical, and cross section is circle.Described follower link 8 is same with the bar appearance of drive connecting rod 10.

Claims (3)

1. a ratchet anti-loosing type 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), handle (14), ratchet locking device (15), on described right screw rod (13) and left screw rod (3), be equipped with ratchet locking device (15), 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. ratchet anti-loosing type high precision fine tuning fixture according to claim 1, it is characterized in that, described ratchet locking device (15) is by gear (16), outer ring (17), spring (18), ratchet (19), screw (20) composition, described gear (16) is assemblied on left screw rod (3) by key, described outer ring (17) is fixed on clamping fixture seat (1), and be provided with screwed hole and spring (18), one end of described ratchet (19) is hinged on outer ring (17), other end linking springs (18), described screw (20) is assemblied in the screwed hole of outer ring (17), and be pressed on ratchet (19).
3. ratchet anti-loosing type high precision fine tuning fixture according to claim 1 and 2, is characterized in that, described left spring (9), right spring (11), spring (18) are extension spring.
CN201320814207.3U 2013-12-12 2013-12-12 High precision fine tuning clamp employing pawls for preventing looseness Expired - Fee Related CN203726196U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320814207.3U CN203726196U (en) 2013-12-12 2013-12-12 High precision fine tuning clamp employing pawls for preventing looseness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320814207.3U CN203726196U (en) 2013-12-12 2013-12-12 High precision fine tuning clamp employing pawls for preventing looseness

Publications (1)

Publication Number Publication Date
CN203726196U true CN203726196U (en) 2014-07-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103737386A (en) * 2013-12-12 2014-04-23 芜湖市天雄新材料科技有限公司 Rachet looseness prevention high-precision fine adjusting clamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103737386A (en) * 2013-12-12 2014-04-23 芜湖市天雄新材料科技有限公司 Rachet looseness prevention high-precision fine adjusting clamp

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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: 20140723

Termination date: 20141212

EXPY Termination of patent right or utility model