CN203900899U - Self-centering clamping tool - Google Patents
Self-centering clamping tool Download PDFInfo
- Publication number
- CN203900899U CN203900899U CN201420248147.8U CN201420248147U CN203900899U CN 203900899 U CN203900899 U CN 203900899U CN 201420248147 U CN201420248147 U CN 201420248147U CN 203900899 U CN203900899 U CN 203900899U
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- China
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- base plate
- workpiece
- self
- cavity
- centering clamping
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Abstract
The utility model provides a self-centering clamping tool. When thin-walled parts which deform easily are machined, the self-centering clamping tool can be used for a blank surface required to be positioned while castings deform or castings with required sizes cannot be manufactured, the machining quality can be improved, and unnecessary waste loss is reduced. The self-centering clamping tool comprises a bottom plate, wherein a workpiece to be positioned is arranged on the bottom plate; and a cavity is formed in the center of the workpiece to be positioned. The self-centering clamping tool is characterized in that wedge-shaped pushing blocks which are distributed symmetrically are arranged on the bottom plate and correspond to the center of the cavity; a spring is arranged between opposite end surfaces of the wedge-shaped pushing blocks; wedge-shaped surface structures which are symmetric are respectively arranged on end surfaces, which are far away from each other, of the wedge-shaped pushing blocks, and are two inclined plane structures distributed symmetrically; the inclined plane structure of each wedge-shaped pushing block is correspondingly adhered to an inclined plane on the inner side of a centering block; the outer side surface of the centering block which is in a clamping state clings to the inner wall of the workpiece to be positioned; and a transmission pin is arranged on the lower end surface of each wedge-shaped pushing block in a projected manner.
Description
Technical field
The utility model relates to the technical field of structures of workpiece location, is specially a kind of self-centering clamping frock.
Background technology
Existing location clamps, inadequate to thin-walled, dimension control yielding and symmetrical component, easily cause that processing dimension is overproof, machining area is asymmetric, locally produce distortion, or relative displacement of working position etc., finally cause part to be scrapped, this Novel tooling can effectively address the above problem, and in Improving The Quality of Products, increases substantially working (machining) efficiency.
Summary of the invention
For existing above-mentioned defect, the utility model provides a kind of self-centering clamping frock, in the time of thin, the Flexible Deforming Parts of processing wall, for the black skin of needs location, in the time that casting deformation maybe cannot reach size, use the type self-centering frock, can improve crudy, reduce unnecessary loss due to spoiled work.
A kind of self-centering clamping frock, its technical scheme is such: it comprises base plate, on described base plate, be provided with workpiece to be positioned, the center of described workpiece to be positioned has cavity, it is characterized in that: described base plate is provided with the wedge shape pushing block being arranged symmetrically with corresponding to the center of cavity, between the opposing end surface of described wedge shape pushing block, be provided with spring, the mutual of described wedge shape pushing block is furnished with respectively symmetrical lozenges structure away from end face, described lozenges structure is two ramp structures that are arranged symmetrically with, the ramp structure of each described wedge shape pushing block is the inclined-plane, inner side of the center bridge of corresponding laminating correspondence position respectively, the lateral surface of the described center bridge under clamped condition is close to the inwall of described workpiece to be positioned, the lower surface evagination of described wedge shape pushing block has trundle, it is lower protruding in guiding base plate after the straight-line groove of the base plate that leads that described trundle runs through, described guiding base plate is anchored on the upper surface of described base plate, between the lower surface of described guiding base plate and described base plate, be provided with slurcam, the middle part of described slurcam is provided with the guiding cavity that two ends are symmetrical inclined-plane, the inclined surface of described guiding cavity is close to the described trundle of corresponding end, one side of described slurcam is fastenedly connected with driving handle structure.
It is further characterized in that:
Four jiaos of described workpiece to be positioned are supported on respectively abutment sleeve, described abutment sleeve is anchored on the upper surface of described base plate, pressing plate press-fits the upper surface in described workpiece to be positioned, and screw runs through pressing plate rear thread and connects and be positioned in the corresponding locating hole of described base plate;
The bottom protrusion correspondence of every described center bridge clamps the straight line tongue of the correspondence position of described guiding base plate;
Described base plate is provided with riser corresponding to a side of described driving handle structure, the double-screw bolt of described driving handle is threaded and is fastenedly connected a side of described slurcam behind the straight-line guidance hole of described riser, and described guiding cavity is the self-driven handle arrangement one side direction opposite side structure of enlarging gradually;
The two ends of described guiding base plate are fastened with respectively locating piece corresponding to the two ends of the cavity of described workpiece to be positioned, and the two ends inwall of the cavity of described workpiece to be positioned is close to respectively in the outer face of two locating pieces; One end of described base plate is fastened with end location riser, and the guide pillar of end position fixing handle runs through after the riser of location, described end the end face towards described workpiece to be positioned.
Adopt after structure of the present utility model, utilize the stretching, extension of spring, two wedge shape pushing blocks can be from the translation of trend two ends, drive respectively the center bridge of both sides separately to move laterally simultaneously, be close to the inwall of workpiece to be positioned, thereby the upper and lower symmetrical location of the black skin that reaches workpiece to be positioned, in the time that needs unload workpiece, turn driving handle structure, make slurcam motion, and inwardly shrink two trundles by slurcam make the to lead inclined-plane of cavity, two trundles shrink along straight-line groove centering, make outside and the workpiece of center bridge produce gap, thereby taking-up workpiece, thin at processing wall, when Flexible Deforming Parts, for the black skin of needs location, in the time that casting deformation maybe cannot reach size, use the type self-centering frock, can improve crudy, reduce unnecessary loss due to spoiled work.
Brief description of the drawings
Fig. 1 is front view schematic diagram of the present utility model;
Fig. 2 is stereogram structural representation of the present utility model;
Fig. 3 is the mounting structure schematic diagram of guiding base plate of the present utility model, trundle, slurcam;
Fig. 4 is that the A-A of Fig. 3 cuts open structural representation.
Detailed description of the invention
A kind of self-centering clamping frock, see Fig. 1～Fig. 4: it comprises base plate 1, on base plate 1, be provided with workpiece 2 to be positioned, the center of workpiece 2 to be positioned has cavity, base plate 1 is provided with the wedge shape pushing block 3 being arranged symmetrically with corresponding to the center of cavity, between the opposing end surface of wedge shape pushing block 3, be provided with spring 4, the mutual of wedge shape pushing block 3 is furnished with respectively symmetrical lozenges structure away from end face, lozenges structure is two ramp structures that are arranged symmetrically with, the ramp structure of each wedge shape pushing block 3 is the inclined-plane, inner side of the center bridge 5 of corresponding laminating correspondence position respectively, the lateral surface of the center bridge 5 under clamped condition is close to the inwall of workpiece 2 to be positioned, the lower surface evagination of wedge shape pushing block 3 has trundle 6, it is rear lower protruding in guiding base plate 7 that trundle 6 runs through the straight-line groove 8 of the base plate 7 that leads, the two ends of guiding base plate 7 are anchored on the upper surface of base plate 1, between the lower surface, center of guiding base plate 7 and base plate 1, be provided with slurcam 9, the middle part of slurcam 9 is provided with the guiding cavity 10 that two ends are symmetrical inclined-plane, the inclined surface of guiding cavity 10 is close to the trundle 6 of corresponding end, one side of slurcam 9 is fastenedly connected with driving handle 11.
Four jiaos of workpiece 2 to be positioned are supported on respectively abutment sleeve 12, and abutment sleeve 12 is anchored on the upper surface of base plate 1, and pressing plate 13 press-fits in the upper surface of workpiece 2 to be positioned, and screw 14 runs through pressing plate 13 rear threads and connects and be positioned in the corresponding locating hole of base plate 1; Bottom protrusion 15 correspondences of every center bridge 5 clamp the straight-line groove 16 of the correspondence position of guiding base plate 7; Base plate 1 is provided with riser 17 corresponding to a side of driving handle 11, the double-screw bolt 18 of driving handle 11 is threaded and is fastenedly connected a side of slurcam 9 behind the straight-line guidance hole of riser 17, and guiding cavity 10 is the self-driven handle 11 1 side direction opposite sides structures of enlarging gradually; The two ends of guiding base plate 7 are fastened with respectively locating piece 19 corresponding to the two ends of the cavity of workpiece 2 to be positioned, the two ends inwall of the cavity of workpiece 2 to be positioned is close to respectively in the outer face of two locating pieces 19, one end of base plate 1 is fastened with end location riser 20, and the guide pillar 22 of end position fixing handle 21 runs through after the riser 20 of location, end the end face towards workpiece 2 to be positioned.
Its operation principle is as follows:
Clamping workpiece to be positioned: utilize the stretching, extension of spring 4, two wedge shape pushing blocks can be from the translation of trend two ends, drive respectively four center bridges 5 that amount to of both sides to move laterally simultaneously, thereby reach the upper and lower symmetrical location of blank, rotate again end position fixing handle 21 and withstand workpiece to be positioned, make the inwall of workpiece to be positioned near the outer face of the locating piece 19 of one end, wherein two locating pieces 19 are fixed on base plate 1, can not produce motion, two locating pieces 19 each other spacing are farthest in blank, to open the minimum dimension of crotch; Tighten afterwards screw 14, make pressing plate 13 compress workpiece to be positioned, make workpiece 2 to be positioned fixing.In frock and workpiece to be positioned 2, open crotch straight flange close contact, from inside to outside strut clamping, reduce blank local deformation, thereby ensure the processing dimension of part.
Dismantle workpiece to be positioned: rotary screw 14, unclamps pressing plate 13; Rotarily actuate handle 11, drive slurcam 9 to move forward, trundle 6 is shunk to centre along the straight-line groove 8 on guiding base plate 7, thereby the power that makes wedge shape pushing block 3 overcome spring 4 is shunk to centre, make to produce gap between wedge shape pushing block 3 and center bridge 5, now center bridge 5, by no longer producing the inner support thrust for the treatment of positioning workpieces 2, finally rocks gently workpiece 2 to be positioned and just can take out.
Claims (5)
1. a self-centering clamping frock, it comprises base plate, on described base plate, be provided with workpiece to be positioned, the center of described workpiece to be positioned has cavity, it is characterized in that: described base plate is provided with the wedge shape pushing block being arranged symmetrically with corresponding to the center of cavity, between the opposing end surface of described wedge shape pushing block, be provided with spring, the mutual of described wedge shape pushing block is furnished with respectively symmetrical lozenges structure away from end face, described lozenges structure is two ramp structures that are arranged symmetrically with, the ramp structure of each described wedge shape pushing block is the inclined-plane, inner side of the center bridge of corresponding laminating correspondence position respectively, the lateral surface of the described center bridge under clamped condition is close to the inwall of described workpiece to be positioned, the lower surface evagination of described wedge shape pushing block has trundle, it is lower protruding in guiding base plate after the straight-line groove of the base plate that leads that described trundle runs through, described guiding base plate is anchored on the upper surface of described base plate, between the lower surface of described guiding base plate and described base plate, be provided with slurcam, the middle part of described slurcam is provided with the guiding cavity that two ends are symmetrical inclined-plane, the inclined surface of described guiding cavity is close to the described trundle of corresponding end, one side of described slurcam is fastenedly connected with driving handle structure.
2. a kind of self-centering clamping frock according to claim 1, it is characterized in that: four jiaos of described workpiece to be positioned are supported on respectively abutment sleeve, described abutment sleeve is anchored on the upper surface of described base plate, pressing plate press-fits the upper surface in described workpiece to be positioned, and screw runs through pressing plate rear thread and connects and be positioned in the corresponding locating hole of described base plate.
3. a kind of self-centering clamping frock according to claim 1, is characterized in that: the bottom protrusion correspondence of every described center bridge clamps the straight line tongue of the correspondence position of described guiding base plate.
4. a kind of self-centering clamping frock according to claim 1, it is characterized in that: described base plate is provided with riser corresponding to a side of described driving handle structure, the double-screw bolt of described driving handle is threaded and is fastenedly connected a side of described slurcam behind the straight-line guidance hole of described riser, and described guiding cavity is the self-driven handle arrangement one side direction opposite side structure of enlarging gradually.
5. a kind of self-centering clamping frock according to claim 1, it is characterized in that: the two ends of described guiding base plate are fastened with respectively locating piece corresponding to the two ends of the cavity of described workpiece to be positioned, the two ends inwall of the cavity of described workpiece to be positioned is close to respectively in the outer face of two locating pieces; One end of described base plate is fastened with end location riser, and the guide pillar of end position fixing handle runs through after the riser of location, described end the end face towards described workpiece to be positioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420248147.8U CN203900899U (en) | 2014-05-15 | 2014-05-15 | Self-centering clamping tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420248147.8U CN203900899U (en) | 2014-05-15 | 2014-05-15 | Self-centering clamping tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203900899U true CN203900899U (en) | 2014-10-29 |
Family
ID=51775191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420248147.8U Withdrawn - After Issue CN203900899U (en) | 2014-05-15 | 2014-05-15 | Self-centering clamping tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203900899U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103990980A (en) * | 2014-05-15 | 2014-08-20 | 鹰普（中国）有限公司 | Self-centering clamping tool |
| CN107263139A (en) * | 2017-06-27 | 2017-10-20 | 鹰普（中国）有限公司 | A kind of self-centering auxiliary clamping device |
| CN109605246A (en) * | 2018-12-31 | 2019-04-12 | 保定向阳航空精密机械有限公司 | A kind of Double Oblique Wedge makes concentric mechanism by oneself |
-
2014
- 2014-05-15 CN CN201420248147.8U patent/CN203900899U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103990980A (en) * | 2014-05-15 | 2014-08-20 | 鹰普（中国）有限公司 | Self-centering clamping tool |
| CN103990980B (en) * | 2014-05-15 | 2016-04-13 | 鹰普（中国）有限公司 | A kind of self-centering clamping frock |
| CN107263139A (en) * | 2017-06-27 | 2017-10-20 | 鹰普（中国）有限公司 | A kind of self-centering auxiliary clamping device |
| CN107263139B (en) * | 2017-06-27 | 2019-10-22 | 鹰普（中国）有限公司 | A kind of self-centering auxiliary clamping device |
| CN109605246A (en) * | 2018-12-31 | 2019-04-12 | 保定向阳航空精密机械有限公司 | A kind of Double Oblique Wedge makes concentric mechanism by oneself |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141029 Effective date of abandoning: 20160413 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |