CN203679790U - Self-locking worm loose-preventing clamp - Google Patents
Self-locking worm loose-preventing clamp Download PDFInfo
- Publication number
- CN203679790U CN203679790U CN201320816935.8U CN201320816935U CN203679790U CN 203679790 U CN203679790 U CN 203679790U CN 201320816935 U CN201320816935 U CN 201320816935U CN 203679790 U CN203679790 U CN 203679790U
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- Prior art keywords
- clamp
- worm
- self
- screw
- worm gear
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Abstract
The utility model discloses a self-locking worm loose-preventing clamp, and belongs to the field of clamps. The self-locking worm loose-preventing clamp comprises a clamp base, a screw, a moving block and clamping blocks, wherein the upper end of the clamp base is pressed on a concave edge at the lower end of the moving block; the lower ends of the clamping blocks are pressed on a concave edge at the upper end of the moving block; the screw is meshed with the moving block; the self-locking worm loose-preventing clamp further comprises a worm gear and a worm; the worm gear is assembled on the screw through a key; and the worm is assembled on the clamp base through a rolling bearing and is meshed with the worm gear. The self-locking worm loose-preventing clamp solves the problems that the conventional clamp cannot clamp reliably 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 self-locking fixture for preventing that piece-holder is loosening.
Background technology
In machine industry, lathe is widely used in processing all kinds of parts, in the time of processing parts, relates to its clamping and positioning problem.Workpiece is adding man-hour, by the clamping of fixture, can be adapted to various machining.But due to the vibration of lathe in process and the effect of cutting force, cause fixture to occur loosening, and then because piece-holder power causes the loosening of workpiece not, reduced machining accuracy, when serious, will cause workpiece to be thrown out of the generation of accident.
Summary of the invention
The clamping that causes for existing fixture is unreliable, easy loosening problem, the invention provides a kind of worm screw self-locking fixture.
For addressing the above problem, the present invention adopts following technical scheme.
A kind of worm screw self-locking fixture, comprise clamping fixture seat, screw rod, movable block, clamp, the upper end of clamping fixture seat is pressed on the recessed edge in movable block lower end, clamp lower end is pressed on the recessed edge in movable block upper end, screw rod is meshed with movable block, also comprises worm gear, worm screw, and described worm gear is assemblied on screw rod by key, 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 worm geared self-locking performance to realize the locking of fixture, locking reliable and compact conformation.
(2) 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.
(3) 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.
In figure: 1-clamping fixture seat, 2-screw rod, 3-movable block, 4-clamp, 5-worm gear, 6-worm screw.
The specific embodiment
Describe the present invention below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, worm screw self-locking fixture comprises clamping fixture seat 1, screw rod 2, movable block 3, clamp 4, the upper end of clamping fixture seat 1 is pressed on the movable block 3 recessed edge in lower end, clamp 4 lower ends are pressed on the movable block 3 recessed edge in upper end, screw rod 2 is meshed with movable block 3, also comprises worm gear 5, worm screw 6, and described worm gear 5 is assemblied on screw rod 2 by key, described worm screw 6 is assemblied in clamping fixture seat 1 by rolling bearing, and is meshed with worm gear 5.
The angle of spiral of described worm screw 6 is less than the equivalent friction angle of the field of conjugate action of itself and worm gear 5.
embodiment 1
As shown in Figure 1 and Figure 2, worm screw self-locking fixture comprises clamping fixture seat 1, screw rod 2, movable block 3, clamp 4, the upper end of clamping fixture seat 1 is pressed on the movable block 3 recessed edge in lower end, clamp 4 lower ends are pressed on the movable block 3 recessed edge in upper end, screw rod 2 is meshed with movable block 3, also comprises worm gear 5, worm screw 6, and described worm gear 5 is assemblied on screw rod 2 by key, described worm screw 6 is assemblied in clamping fixture seat 1 by rolling bearing, and is meshed with worm gear 5.
The angle of spiral of described worm screw 6 is less than the equivalent friction angle of the field of conjugate action of itself and worm gear 5.Described worm screw 6 is single start worm, and its section flank profil is spiral of Archimedes.
As shown in Figure 1 and Figure 2, worm screw self-locking fixture comprises clamping fixture seat 1, screw rod 2, movable block 3, clamp 4, the upper end of clamping fixture seat 1 is pressed on the movable block 3 recessed edge in lower end, clamp 4 lower ends are pressed on the movable block 3 recessed edge in upper end, screw rod 2 is meshed with movable block 3, also comprises worm gear 5, worm screw 6, and described worm gear 5 is assemblied on screw rod 2 by key, described worm screw 6 is assemblied in clamping fixture seat 1 by rolling bearing, and is meshed with worm gear 5.
The angle of spiral of described worm screw 6 is less than the equivalent friction angle of the field of conjugate action of itself and worm gear 5.Described worm screw 6 is double-thread worm, and its section flank profil is concave arc.
Claims (2)
1. a worm screw self-locking fixture, comprise clamping fixture seat (1), screw rod (2), movable block (3), clamp (4), the upper end of clamping fixture seat (1) is pressed on the recessed edge in movable block (3) lower end, clamp (4) lower end is pressed on the recessed edge in movable block (3) upper end, screw rod (2) is meshed with movable block (3), it is characterized in that, also comprise worm gear (5), worm screw (6), described worm gear (5) is assemblied on screw rod (2) by key, described worm screw (6) is assemblied in clamping fixture seat (1) by rolling bearing, and is meshed with worm gear (5).
2. worm screw self-locking fixture according to claim 1, is characterized in that, the angle of spiral of described worm screw (6) is less than the equivalent friction angle of the field of conjugate action of itself and worm gear (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320816935.8U CN203679790U (en) | 2013-12-13 | 2013-12-13 | Self-locking worm loose-preventing clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320816935.8U CN203679790U (en) | 2013-12-13 | 2013-12-13 | Self-locking worm loose-preventing clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203679790U true CN203679790U (en) | 2014-07-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320816935.8U Expired - Fee Related CN203679790U (en) | 2013-12-13 | 2013-12-13 | Self-locking worm loose-preventing clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203679790U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722397A (en) * | 2013-12-13 | 2014-04-16 | 芜湖市天雄新材料科技有限公司 | Anti-disengagement clamp with self-locking type worm |
-
2013
- 2013-12-13 CN CN201320816935.8U patent/CN203679790U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722397A (en) * | 2013-12-13 | 2014-04-16 | 芜湖市天雄新材料科技有限公司 | Anti-disengagement clamp with self-locking type worm |
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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: 20151213 |
|
| EXPY | Termination of patent right or utility model |