CN203779137U - Limiting looseness-preventing type overload protection clamp - Google Patents
Limiting looseness-preventing type overload protection clamp Download PDFInfo
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- CN203779137U CN203779137U CN201320814104.7U CN201320814104U CN203779137U CN 203779137 U CN203779137 U CN 203779137U CN 201320814104 U CN201320814104 U CN 201320814104U CN 203779137 U CN203779137 U CN 203779137U
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- clamp
- fixed block
- screw rod
- lever
- spring
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Abstract
The utility model discloses a limiting looseness-preventing type overload protection clamp, and belongs to the field of clamps. The limiting looseness-preventing type overload protection clamp comprises a clamp base, a left fixing block, a left threaded rod, a left clamping block, a right clamping block, a right threaded rod and a right fixing block. A dovetail groove is formed in the clamp base, and the left fixing block and the right fixing block are arranged at the two ends of the dovetail groove. The limiting looseness-preventing type overload protection clamp further comprises a safety clutch mechanism, a fixing base, an adjustment rod, an outer ring, screws, springs, steel balls, a square handle and limiting looseness-preventing devices. The limiting looseness-preventing devices are arranged on the adjustment rod and the left threaded rod respectively. The adjustment rod is assembled in a threaded hole of the fixing base. The square handle is connected with the adjustment rod. The screws are assembled in threaded holes of the outer ring, the steel balls are pressed on the surfaces of the square handle, and the springs are arranged between the screws and the steel balls. The limiting looseness-preventing type overload protection clamp solves the problems that clamping force of an existing clamp can not be easily controlled, and the existing clamp is prone to loosening, and has the advantages of being simple in structure, reasonable in design and easy to manufacture.
Description
Technical field
The invention belongs to fixture field, more particularly, relate to a kind of restriction 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.During current existing fixture work, clamping frequently and loosening in process, conventionally by hand, acting on the degree of tightness situation that workpiece judges piece-holder, expending time in more, increasing labour intensity, reducing 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 restriction anti-loosing type overload prevention fixture.
For addressing the above problem, the present invention adopts following technical scheme.
A restriction 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 at dovetail groove two ends, be provided with left fixed block and right fixed block, 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 A, steel ball, side's handle, restriction locking device, is equipped with restriction 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 A, steel ball, side's handle forms, and described outer ring is connected with right screw 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 A between described screw and steel ball.
Described restriction locking device is comprised of ratchet, roller, lever, spring B, bolt, described ratchet is assemblied on left screw rod by key, the quantity of described lever is 2, divide and be located at ratchet both sides, and be all hinged on clamping fixture seat, and away from one end of clamping fixture seat, unthreaded hole be set at lever, described roller is connected through the hinge on lever, the two ends of described spring B are connected on the lever of ratchet both sides, and described bolt is through the reserved unthreaded hole of lever.
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, when work, only need rotary regulating lever, until square handle skids in insurance clutch, both guaranteed that piece-holder was reliable, prevented again that piece-holder was excessive.
(2) the present invention utilizes ratchet and roller 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 ratchet and roller, has played the locking of left screw rod and adjusting rod, and then makes fixture can not occur becoming flexible because of the effect of vibration and cutting force.
(3) the present invention adopts two symmetrical rollers, has eliminated radial load screw rod being caused because of locking effect, has improved the service life of fixture.
(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;
Fig. 4 is that C along Fig. 1 is to view.
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 A, 14-steel ball, 15-square handle, 16-restriction locking device, 17-ratchet, 18-roller, 19-lever, 20-spring B, 21-bolt.
The specific embodiment
Below in conjunction with accompanying drawing, describe the present invention.
As Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4, restriction 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 at dovetail groove two ends, be provided with left fixed block 2 and right fixed block 7, 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 A13, steel ball 14, side's handle 15, restriction locking device 16, on described adjusting rod 10 and left screw rod 3, be equipped with restriction locking device 16, 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 A13, steel ball 14, side's handle 15 forms, described outer ring 11 is connected with right screw 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 A13 between described screw 12 and steel ball 14.
Described restriction locking device 16 is comprised of ratchet 17, roller 18, lever 19, spring B 20, bolt 21, described ratchet 17 is assemblied on left screw rod 3 by key, the quantity of described lever 19 is 2, divide and be located at ratchet 17 both sides, and be all hinged on clamping fixture seat 1, and away from one end of clamping fixture seat 1, unthreaded hole is set at lever 19, described roller 18 is connected through the hinge on lever 19, the two ends of described spring B 20 are connected on the lever 19 of ratchet 17 both sides, and described bolt 21 is through the reserved unthreaded hole of lever 19.
embodiment 1
As Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4, restriction 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 at dovetail groove two ends, be provided with left fixed block 2 and right fixed block 7, 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 A13, steel ball 14, side's handle 15, restriction locking device 16, on described adjusting rod 10 and left screw rod 3, be equipped with restriction locking device 16, 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 A13, steel ball 14, side's handle 15 forms, described outer ring 11 is connected with right screw 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 A13 between described screw 12 and steel ball 14.
Described restriction locking device 16 is comprised of ratchet 17, roller 18, lever 19, spring B 20, bolt 21, described ratchet 17 is assemblied on left screw rod 3 by key, the quantity of described lever 19 is 2, divide and be located at ratchet 17 both sides, and be all hinged on clamping fixture seat 1, and away from one end of clamping fixture seat 1, unthreaded hole is set at lever 19, described roller 18 is connected through the hinge on lever 19, the two ends of described spring B 20 are connected on the lever 19 of ratchet 17 both sides, and described bolt 21 is through the reserved unthreaded hole of lever 19.
Described spring A13 is Compress Spring, and described spring B 20 is extension spring.
Claims (2)
1. a restriction 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 at dovetail groove two ends, be provided with left fixed block (2) and right fixed block (7), 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 A(13), steel ball (14), side's handle (15), restriction locking device (16), on described adjusting rod (10) and left screw rod (3), be equipped with restriction locking device (16), 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 A(13), steel ball (14), side's handle (15) forms, described outer ring (11) is connected with right screw 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 A(13 between described screw (12) and steel ball (14)).
2. restriction anti-loosing type overload prevention fixture according to claim 1, it is characterized in that, described restriction locking device (16) is by ratchet (17), roller (18), lever (19), spring B (20), bolt (21) forms, described ratchet (17) is assemblied on left screw rod (3) by key, the quantity of described lever (19) is 2, divide and be located at ratchet (17) both sides, and be all hinged on clamping fixture seat (1), and away from one end of clamping fixture seat (1), unthreaded hole is set at lever (19), described roller (18) is connected through the hinge on lever (19), the two ends of described spring B (20) are connected on the lever (19) of ratchet (17) both sides, described bolt (21) is through the reserved unthreaded hole of lever (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320814104.7U CN203779137U (en) | 2013-12-12 | 2013-12-12 | Limiting looseness-preventing type overload protection clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320814104.7U CN203779137U (en) | 2013-12-12 | 2013-12-12 | Limiting looseness-preventing type overload protection clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203779137U true CN203779137U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320814104.7U Expired - Fee Related CN203779137U (en) | 2013-12-12 | 2013-12-12 | Limiting looseness-preventing type overload protection clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203779137U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769883A (en) * | 2013-12-12 | 2014-05-07 | 芜湖市天雄新材料科技有限公司 | Limiting and looseness-preventing type overload protective clamp |
| CN109663837A (en) * | 2019-01-21 | 2019-04-23 | 福州大学 | A kind of T-type profile corrector and its school type method |
-
2013
- 2013-12-12 CN CN201320814104.7U patent/CN203779137U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769883A (en) * | 2013-12-12 | 2014-05-07 | 芜湖市天雄新材料科技有限公司 | Limiting and looseness-preventing type overload protective clamp |
| CN109663837A (en) * | 2019-01-21 | 2019-04-23 | 福州大学 | A kind of T-type profile corrector and its school type method |
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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: 20140820 Termination date: 20141212 |
|
| EXPY | Termination of patent right or utility model |