CN203726195U - Overload protection clamp with looseness-preventing pawls - Google Patents
Overload protection clamp with looseness-preventing pawls Download PDFInfo
- Publication number
- CN203726195U CN203726195U CN201320814016.7U CN201320814016U CN203726195U CN 203726195 U CN203726195 U CN 203726195U CN 201320814016 U CN201320814016 U CN 201320814016U CN 203726195 U CN203726195 U CN 203726195U
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- CN
- China
- Prior art keywords
- fixed block
- clamp
- outer ring
- ratchet
- screw
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- Expired - Fee Related
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Abstract
The utility model discloses an overload protection clamp with looseness-preventing pawls and belongs to the field of clamps. The overload protection clamp comprises a clamp base, a left fixed block, a left screw stem, a left clamping block, a right clamping block, a right screw stem 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 safety engaging and engaging mechanism, a fixing base, an adjusting rod, an outer ring, bolts, springs, steel balls, a square shank and looseness preventing pawl devices. The adjusting rod and the left screw stem are provided with the looseness preventing pawl devices. The adjusting rod is mounted in a threaded hole of the fixing base. The square shank is connected with the adjusting rod. The bolts are mounted in threaded holes of the outer ring. The steel balls are pressed to the surface of the square shank. The springs are arranged between the bolts and the steel balls. The overload protection clamp solves the problems that the clamping force of the conventional clamp is difficult to control and the clamp gets loose easily, and has the advantages of simple structure, reasonable design and easy manufacture.
Description
Technical field
The invention belongs to fixture field, more particularly, relate to a kind of ratchet anti-loosing type overload prevention fixture for preventing that piece-holder is excessive.
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.When current existing fixture work, clamping frequently and loosen in process, conventionally act on workpiece and judge the degree of tightness situation of piece-holder by hand, expend time in more, increased labour intensity, reduced operating efficiency.Because clamping force is wayward, too pine does not have positioning action, too tightly damages surface of the work, even compression failure workpiece simultaneously.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 clamping force that causes for existing fixture is wayward, easy loosening problem, the invention provides a kind of ratchet anti-loosing type overload prevention fixture.
For addressing the above problem, the present invention adopts following technical scheme.
A kind of ratchet anti-loosing type overload prevention fixture, comprises clamping fixture seat, left fixed block, left screw rod, left clamp, right clamp, right screw 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, on left fixed block and right fixed block, be equipped with screwed hole, left clamp and right clamp are all assemblied in the dovetail groove on clamping fixture seat, and left screw rod one end and left clamp are connected, the threaded engagement of the other end and left fixed block, right screw rod one end and right clamp are connected, and the other end is assemblied in the screwed hole of right fixed block, also comprises insurance clutch, holder, adjusting rod, outer ring, screw, spring, steel ball, Fang Bing, ratchet locking device, is equipped with ratchet locking device on described adjusting rod and left screw rod, and described holder is fixed on clamping fixture seat, and is provided with screwed hole, and described adjusting rod is assemblied in the screwed hole of holder, and described insurance clutch is by outer ring, screw, spring, steel ball, side's handle composition, described outer ring is connected with guide rod, and described square handle is connected with adjusting rod, and described screw is assemblied in the screwed hole of outer ring, and described handle surface, the steel ball side of being pressed on, is provided with spring between described screw and steel ball.
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.
Than prior art, beneficial effect of the present invention is:
(1) the present invention utilizes insurance clutch to prevent that piece-holder is excessive, according to different conditions of work, the spring of different-stiffness is set, in the time of work, only need rotary regulating lever, until square handle skids in insurance clutch, both ensured that piece-holder was reliable, prevented again that piece-holder was excessive.
(2) the present invention utilizes gear and ratchet to realize the locking effect to left screw rod and adjusting 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;
Fig. 4 is the cutaway view along C-C 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-right screw rod, 7-right fixed block, 8-insurance clutch, 9-holder, 10-adjusting rod, 11-outer ring, 12-screw, 13-spring, 14-steel ball, 15-square handle, 16-ratchet locking device, 17-gear, 18-outer ring, 19-spring, 20-ratchet, 21-screw.
Detailed description of the invention
Describe the present invention below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4, ratchet anti-loosing type overload prevention fixture comprises clamping fixture seat 1, left fixed block 2, left screw rod 3, left clamp 4, right clamp 5, right screw 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, on left fixed block 2 and right fixed block 7, be equipped with screwed hole, left clamp 4 and right clamp 5 are all assemblied in the dovetail groove on clamping fixture seat 1, and left screw rod 3 one end and left clamp 4 are connected, the threaded engagement of the other end and left fixed block 2, right screw rod 6 one end and right clamp 5 are connected, and the other end is assemblied in the screwed hole of right fixed block 7, also comprise insurance clutch 8, holder 9, adjusting rod 10, outer ring 11, screw 12, spring 13, steel ball 14, side's handle 15, ratchet locking device 16, on described adjusting rod 10 and left screw rod 3, be equipped with ratchet locking device 15, described holder 9 is fixed on clamping fixture seat 1, and is provided with screwed hole, described adjusting rod 10 is assemblied in the screwed hole of holder 9, and described insurance clutch 8 is by outer ring 11, screw 12, spring 13, steel ball 14, side's handle 15 forms, described outer ring 11 is connected with guide rod 6, and described square handle 15 is connected with adjusting rod 10, and described screw 12 is assemblied in the screwed hole of outer ring 11, described steel ball 14 side's of being pressed on handle 15 surfaces, are provided with spring 13 between described screw 12 and steel ball 14.
Described ratchet locking device 16 is made up of gear 17, outer ring 18, spring 19, ratchet 20, screw 21, described gear 17 is assemblied on left screw rod 3 by key, described outer ring 18 is fixed on clamping fixture seat 1, and be provided with screwed hole and spring 19, one end of described ratchet 20 is hinged on outer ring 18, other end linking springs 19, described screw 21 is assemblied in the screwed hole of outer ring 18, and is pressed on ratchet 20.
embodiment 1
As Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4, ratchet anti-loosing type overload prevention fixture comprises clamping fixture seat 1, left fixed block 2, left screw rod 3, left clamp 4, right clamp 5, right screw 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, on left fixed block 2 and right fixed block 7, be equipped with screwed hole, left clamp 4 and right clamp 5 are all assemblied in the dovetail groove on clamping fixture seat 1, and left screw rod 3 one end and left clamp 4 are connected, the threaded engagement of the other end and left fixed block 2, right screw rod 6 one end and right clamp 5 are connected, and the other end is assemblied in the screwed hole of right fixed block 7, also comprise insurance clutch 8, holder 9, adjusting rod 10, outer ring 11, screw 12, spring 13, steel ball 14, side's handle 15, ratchet locking device 16, on described adjusting rod 10 and left screw rod 3, be equipped with ratchet locking device 15, described holder 9 is fixed on clamping fixture seat 1, and is provided with screwed hole, described adjusting rod 10 is assemblied in the screwed hole of holder 9, and described insurance clutch 8 is by outer ring 11, screw 12, spring 13, steel ball 14, side's handle 15 forms, described outer ring 11 is connected with guide rod 6, and described square handle 15 is connected with adjusting rod 10, and described screw 12 is assemblied in the screwed hole of outer ring 11, described steel ball 14 side's of being pressed on handle 15 surfaces, are provided with spring 13 between described screw 12 and steel ball 14.
Described ratchet locking device 16 is made up of gear 17, outer ring 18, spring 19, ratchet 20, screw 21, described gear 17 is assemblied on left screw rod 3 by key, described outer ring 18 is fixed on clamping fixture seat 1, and be provided with screwed hole and spring 19, one end of described ratchet 20 is hinged on outer ring 18, other end linking springs 19, described screw 21 is assemblied in the screwed hole of outer ring 18, and is pressed on ratchet 20.
Described spring (13) is Compress Spring, and described spring (19) is extension spring.
Claims (2)
1. a ratchet anti-loosing type overload prevention fixture, comprises clamping fixture seat (1), left fixed block (2), left screw rod (3), left clamp (4), right clamp (5), right screw 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, on left fixed block (2) and right fixed block (7), be equipped with screwed 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), right screw rod (6) one end and right clamp (5) are connected, the other end is assemblied in the screwed hole of right fixed block (7), it is characterized in that, also comprise insurance clutch (8), holder (9), adjusting rod (10), outer ring (11), screw (12), spring (13), steel ball (14), side's handle (15), ratchet locking device (16), on described adjusting rod (10) and left screw rod (3), be equipped with ratchet locking device (15), described holder (9) is fixed on clamping fixture seat (1), and be provided with screwed hole, described adjusting rod (10) is assemblied in the screwed hole of holder (9), and described insurance clutch (8) is by outer ring (11), screw (12), spring (13), steel ball (14), side's handle (15) composition, described outer ring (11) is connected with guide rod (6), described square handle (15) is connected with adjusting rod (10), described screw (12) is assemblied in the screwed hole of outer ring (11), described steel ball (14) side's of being pressed on handle (15) surface, is provided with spring (13) between described screw (12) and steel ball (14).
2. ratchet anti-loosing type overload prevention fixture according to claim 1, it is characterized in that, described ratchet locking device (16) is by gear (17), outer ring (18), spring (19), ratchet (20), screw (21) composition, described gear (17) is assemblied on left screw rod (3) by key, described outer ring (18) is fixed on clamping fixture seat (1), and be provided with screwed hole and spring (19), one end of described ratchet (20) is hinged on outer ring (18), other end linking springs (19), described screw (21) is assemblied in the screwed hole of outer ring (18), and be pressed on ratchet (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320814016.7U CN203726195U (en) | 2013-12-12 | 2013-12-12 | Overload protection clamp with looseness-preventing pawls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320814016.7U CN203726195U (en) | 2013-12-12 | 2013-12-12 | Overload protection clamp with looseness-preventing pawls |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203726195U true CN203726195U (en) | 2014-07-23 |
Family
ID=51196303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320814016.7U Expired - Fee Related CN203726195U (en) | 2013-12-12 | 2013-12-12 | Overload protection clamp with looseness-preventing pawls |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203726195U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769915A (en) * | 2013-12-12 | 2014-05-07 | 芜湖市天雄新材料科技有限公司 | Pawl anti-loosening type overload protection clamp |
| CN109128917A (en) * | 2018-10-24 | 2019-01-04 | 郑州亨睿精密机械科技有限公司 | It is a kind of can automatic adjusument aluminum products fixture for processing |
| CN109352377A (en) * | 2018-11-30 | 2019-02-19 | 郑州亨睿精密机械科技有限公司 | A kind of fixture for processing that clamping force is controllable |
-
2013
- 2013-12-12 CN CN201320814016.7U patent/CN203726195U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769915A (en) * | 2013-12-12 | 2014-05-07 | 芜湖市天雄新材料科技有限公司 | Pawl anti-loosening type overload protection clamp |
| CN109128917A (en) * | 2018-10-24 | 2019-01-04 | 郑州亨睿精密机械科技有限公司 | It is a kind of can automatic adjusument aluminum products fixture for processing |
| CN109352377A (en) * | 2018-11-30 | 2019-02-19 | 郑州亨睿精密机械科技有限公司 | A kind of fixture for processing that clamping force is controllable |
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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: 20140723 Termination date: 20141212 |
|
| EXPY | Termination of patent right or utility model |