CN111805447A - Thin-wall flexible part clamp - Google Patents
Thin-wall flexible part clamp Download PDFInfo
- Publication number
- CN111805447A CN111805447A CN202010618229.7A CN202010618229A CN111805447A CN 111805447 A CN111805447 A CN 111805447A CN 202010618229 A CN202010618229 A CN 202010618229A CN 111805447 A CN111805447 A CN 111805447A
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- clamping
- thin
- flexible part
- clamping jaws
- internal
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- 238000003825 pressing Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a thin-wall flexible part clamp which comprises an outer clamping device and an inner expansion clamping device, wherein the inner expansion clamping device is arranged in the space in the middle of the outer clamping device; the outer clamping device comprises a base, a chuck, an outer guide rail and a plurality of outer clamping jaws, the chuck is arranged on the base and comprises a plurality of clamping jaws, and each outer clamping jaw is fixedly connected with the clamping jaw on the chuck; the plurality of outer clamping jaws clamp the circumferential outer surface of the thin-wall flexible part together; the internal expansion clamping device comprises an internal base plate, a plurality of internal guide rails and a plurality of internal clamping jaws, wherein the plurality of internal guide rails are fixedly arranged on the internal base plate, and each internal guide rail is provided with one internal clamping jaw; the inner clamping jaws clamp the circumferential inner surface of the thin-wall flexible part together; the inner bottom plate is arranged in a middle area defined by the outer clamping jaws. The thin-wall flexible part clamp designed by the scheme has the characteristics of compact structure, strong practicability and high precision.
Description
Technical Field
The invention relates to a tool clamp, in particular to a thin-wall flexible part clamp.
Background
In the field of machining and manufacturing, clamps are commonly used for clamping, positioning, guiding and the like of workpieces, and with the progress of times, higher requirements are put forward on the precision, stability, universality and economy of the clamps.
The high-precision clamping and positioning of the thin-wall (flexible) workpiece is a big difficulty in the prior industry, the thin-wall (flexible) workpiece is very easy to deform in the clamping, processing and assembling processes because of poor rigidity and low strength, and the positioning precision is poor because the clamping force cannot be too high, so that the production efficiency and the processing quality are influenced, the clamping direction of the thin-wall (flexible) workpiece in the prior industry is mostly concentrated on the clamping of a standard circular workpiece, the method only tries on single internal expansion (or internal support point addition) or single external clamping point addition according to the principle, and the precision is poor in the universality; part high accuracy anchor clamps increase the centre gripping precision of anchor clamps with single thinking of eliminating the clearance, but clamping-force, clamping jaw open stroke, commonality have very big limitation, and this type of anchor clamps are mostly imported product, and the expensive while maintaining loaded down with trivial details.
The product on the market can only solve one or two of positioning accuracy, clamping force, clamping jaw opening stroke, universality and economy, and the invention can take various requirements into consideration.
Therefore, the technical personnel in the field are dedicated to develop a thin-wall flexible part clamp which can take positioning precision, clamping force, clamping jaw opening stroke, universality and economy into consideration.
Disclosure of Invention
In view of the above defects in the prior art, the technical problem to be solved by the present invention is to provide a thin-walled flexible part clamp, which is used for clamping a thin-walled flexible part, and has the advantages of high positioning accuracy, large clamping force, large jaw opening stroke, strong versatility and good economical efficiency.
In order to achieve the purpose, the invention provides a thin-wall flexible part clamp which comprises an outer clamping device and an inner expansion clamping device, wherein the inner expansion clamping device is arranged in the space in the middle of the outer clamping device; the outer clamping device comprises a base, a chuck and a plurality of outer clamping jaws, the chuck is arranged on the base and comprises a plurality of clamping jaws, and the outer clamping jaws are fixedly connected with the clamping jaws on the chuck respectively; the plurality of outer clamping jaws clamp the circumferential outer surface of the thin-wall flexible part together; the internal expansion clamping device comprises an internal base plate, a plurality of internal guide rails and a plurality of internal clamping jaws, wherein the plurality of internal guide rails are fixedly arranged on the internal base plate, and each internal guide rail is provided with one internal clamping jaw; the inner clamping jaws clamp the circumferential inner surface of the thin-wall flexible part together; the inner bottom plate is arranged in a middle area defined by the outer clamping jaws.
Further, the outer clamping jaw comprises an outer connecting plate and an outer clamping plate, one end of the outer connecting plate is fixedly connected with the clamping jaw of the chuck, and the other end of the outer connecting plate is fixedly connected with the outer clamping plate.
Further, an outer guide rail is arranged below each outer connecting plate, the outer connecting plates are connected with the outer guide rails in a sliding mode, and the lower plate surfaces of the outer connecting plates are arranged on the outer guide rails and are connected with the outer guide rails in a sliding mode.
Furthermore, the bottom surface of interior bottom plate is supported to the last face of a plurality of outer connecting plates.
Furthermore, a plurality of convex blocks are arranged on the clamping surface of the outer clamping plate.
Further, when the outer clamping jaws are in a closed clamping state, the upper panels of the outer connecting plates jointly form a plane for placing the inner bottom panel.
Furthermore, the inner guide rails are uniformly distributed on the inner bottom plate at the geometric center of the inner bottom plate, an inner shaft is arranged at the geometric center of the inner bottom plate, a pressing surface of an inverted cone is arranged on the inner shaft, the inner side ends of the inner clamping jaws are abutted against the pressing surface of the inner shaft, and each inner clamping jaw is provided with a return spring.
Furthermore, a plurality of bulges are arranged on the clamping surface of the inner clamping jaw.
Furthermore, the number of the outer clamping jaws is the same as that of the inner clamping jaws, and the outer clamping jaws and the inner clamping jaws are arranged in a one-to-one correspondence mode.
Furthermore, a groove is formed in the top of the middle of the clamping surface of the inner clamping jaw.
The invention has the beneficial effects that: the outer clamping is formed by the outer clamping, the outer wall of the thin-wall flexible part clamp is pressed from outside to inside, the inner expanding clamping is formed by the inner clamping jaws, the inner wall of the thin-wall flexible part clamp is pressed from inside to outside, the thin-wall flexible part is clamped inside and outside together, the chuck only provides driving force for the guide rail sliding block, and accuracy guarantee is not provided, so that enough clamping force can be provided, and the accuracy of the clamp cannot be influenced. And the travel of the inner and outer jaws can be increased simultaneously.
Utilize the thinking principle of conformal anchor clamps, divide into a plurality of outer clamping jaws and a plurality of interior clamping jaw with outer clamping device and the interior clamping device that expands, can correspond the quantity that sets up outer clamping jaw and interior clamping jaw according to the concrete shape of thin wall flexible part like this, regard the interior bottom plate as the template, outer anchor clamps as conformal anchor clamps, transmit the high accuracy of interior bottom plate for outer anchor clamps, regard outer anchor clamps as the template again, interior bulging anchor clamps are as conformal anchor clamps, transmit interior anchor clamps with high accuracy, reach super high positioning accuracy ground, and the commonality is strong.
The clamp has a compact design structure, and the floating self-centering function of the internal expansion clamp in a certain range; the guide rail, the outer clamping jaw, the inner bottom plate, the inner guide rail, the inner clamping jaw and the inner shaft are in mutual mechanical contact over-positioning, so that the specified precision requirement can be met when a workpiece is clamped, the service life is long, the maintenance period is long, and the economic advantage is obvious.
Drawings
FIG. 1 is a perspective view of the thin wall flexible part clamp of the present invention;
FIG. 2 is a top view of the thin-walled flexible part holder of the present invention;
FIG. 3 is a schematic view of the structure A-A of FIG. 2;
FIG. 4 is a side view of the thin-walled flexible part holder of the present invention;
FIG. 5 is a cross-sectional view B-B of FIG. 4;
FIG. 6 is a schematic view of the outer clamping assembly of the present invention;
FIG. 7 is a schematic view of the present invention showing the internal expansion clamp;
FIG. 8 is a top view of the inflatable gripping apparatus of the present invention;
fig. 9 is a cross-sectional view a-a of fig. 8.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, wherein the terms "upper", "lower", "left", "right", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular manner, and thus should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 9, the present invention provides a thin-walled flexible part clamp, which comprises an outer clamping device 100 and an inner expanding clamping device 200 installed in the outer clamping device 100.
The outer clamping device 100 comprises a base 101, a chuck 102 and a plurality of outer clamping jaws 103, wherein the chuck 102 is fixedly arranged at the central position of the base 101, in the embodiment, the chuck 102 is a standard chuck, and more specifically, the chuck 102 is a standard four-jaw chuck according to the specific shape of the thin-wall flexible part. After a standard four-jaw chuck is selected, the number of the corresponding outer clamping jaws is 4.
The outer clamping jaw 103 comprises an outer connecting plate 103a and an outer clamping plate 103b, the inner end of the outer connecting plate 103a is fixedly connected with the clamping jaw of the chuck 102, and the outer end of the outer connecting plate 103a is fixedly connected with the outer clamping plate 103 b. The outer clamping plate 103b is vertically installed at the outer end of the outer connection plate 103 a. The clamping surfaces of the 4 outer clamping plates 103b are all facing the center of the chuck 102. A plurality of convex blocks 103c are fixedly arranged on the clamping surface of the outer clamping plate 103b, the convex blocks 103c are uniformly distributed at equal intervals, and the convex blocks 103c form multi-section clamping, so that the clamping effect of the multi-section clamping on the thin-wall flexible part is better than that of single long plane clamping.
An outer guide rail 104 is arranged below each outer connecting plate 103a, the outer connecting plates 103a are fixedly arranged on the base 101, the lower plate surfaces of the outer connecting plates 103a are arranged on the outer guide rails 104 and are in sliding connection with the sliders on the outer guide rails 104, and the outer guide rails 104 are arranged on the base (101) through fixing seats.
The inflatable gripping apparatus 200 includes an interior base plate 201, a plurality of interior rails 202, and a plurality of interior jaws 203. Because the number of the outer clamping jaws 103 and the number of the inner clamping jaws 203 are the same, and the outer clamping jaws 103 and the inner clamping jaws 203 are arranged in one-to-one correspondence. The number of inner holding jaws 203 is 4, and the corresponding number of inner guide rails 202 is also 4.
The inner guide rail 202 is fixedly arranged on the inner bottom plate 201, the inner guide rails 202 are uniformly distributed on the inner bottom plate 201 with the geometric center of the inner bottom plate 201, the inner clamping jaws 203 are arranged on the inner guide rails 202, the inner clamping jaws 203 are connected with the inner guide rail 202 in a sliding mode, the inner clamping jaws 203 are integrated with return springs, namely bosses 203c are machined at the inner end portions of the inner clamping jaws 203, and the return springs are arranged between the bosses 203c and the end faces of the inner guide rail 202.
An inner shaft 204 is arranged at the geometric center of the inner bottom plate 201, one end of the inner shaft 204 is in threaded connection with the inner bottom plate 201, an inverted conical pressing surface 204a is arranged on the shaft body of the inner shaft 204, the inner ends of 4 inner clamping jaws 203 are all abutted against the pressing surface 204a of the inner shaft 204, a tool or a motor is used for driving the inner shaft 204 to enable the inner shaft 204 to move downwards, the inverted conical pressing surface 204a presses the inner ends of the inner clamping jaws 203 downwards, and the 4 inner clamping jaws 203 expand and push outwards; when the inner shaft 204 is rotated in the reverse direction to move upward, the inner end portion of the inner jaw 203 is released from the pressing force of the reverse conical pressing surface 204a, and the return spring moves the inner jaw 203 to return to the center. An inclined surface for facilitating sliding is formed on the inner clamping jaw 203 on the end surface of the contact end of the inner clamping jaw 203 and the inverted conical pressing surface 204 a.
A plurality of projections 203a are formed on the clamping surface of the outer end of the inner jaw 203. The protrusion 203a is in a rib shape arranged in the vertical direction, and large-area clamping is replaced by multi-section clamping, so that the effect is better. The top in the middle of the clamping surface of the inner clamping jaw 203 is provided with a groove 203b, and the stress of the part is released under the action of the groove, so that the stability of the part is better.
The upper plate surface of the outer connecting plate 103a in the outer clamping device 100 supports the bottom surface of the inner bottom plate 201, i.e., the inner bottom plate 201 is placed on the plane formed by the upper plate surfaces of the plurality of outer connecting plates 103 a. In this embodiment, the inner bottom plate 201 is square, and a quarter square regular triangle plane is machined on the upper plate surface of each corresponding outer connecting plate 103 a. The inner bottom plate 201 is placed on the outer connection plate 103a in a floating manner.
When the clamping device is used, the inner clamping jaws clamp the circumferential inner surface of the thin-wall flexible part 300 together, and the outer clamping jaws clamp the circumferential outer surface of the thin-wall flexible part together. The shape of the inner bottom plate, the clamped outer clamping jaw and the clamped inner clamping jaw correspond to the shape of the standard thin-wall flexible part one by one, and the sizes of the standard thin-wall flexible part correspond to the sizes of the standard thin-wall flexible part one by one.
Moreover, the inner clamping jaw is fixed, and the outer clamping jaw acts to clamp hollow round, polygonal and other hollow special-shaped workpieces;
the inner clamping jaw is cancelled, the outer clamping jaw acts, and circular, polygonal and other special-shaped workpieces can be clamped; the outer clamping jaw does not act and is fixed or locked, or the outer clamping jaw is cancelled, only the inner clamping jaw is acted, and hollow round, polygonal and other special-shaped workpieces can be clamped;
the outer clamping jaw and the inner clamping jaw act simultaneously, and can clamp hollow round, polygonal and other special-shaped workpieces.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a thin wall flexible part anchor clamps which characterized by: the clamping device comprises an outer clamping device (100) and an inner expansion clamping device (200), wherein the inner expansion clamping device (200) is arranged in a space in the middle of the outer clamping device (100);
the outer clamping device (100) comprises a base (101), a chuck (102) and a plurality of outer clamping jaws (103), wherein the chuck (102) is arranged on the base (101), the chuck (102) comprises a plurality of clamping jaws, and the outer clamping jaws (103) are respectively and fixedly connected with the clamping jaws on the chuck (102); the outer clamping jaws (103) clamp the circumferential outer surface of the thin-wall flexible part together;
the internal expansion clamping device (200) comprises an internal base plate (201), a plurality of internal guide rails (202) and a plurality of internal clamping jaws (203), wherein the plurality of internal guide rails (202) are fixedly arranged on the internal base plate (201), and each internal guide rail (202) is provided with one internal clamping jaw (203); the plurality of inner clamping jaws (203) clamp the circumferential inner surface of the thin-wall flexible part together;
the inner bottom plate (201) is arranged in a middle area enclosed by the plurality of outer clamping jaws (103).
2. The thin-walled flexible part holder of claim 1 wherein: the outer clamping jaw (103) comprises an outer connecting plate (103 a) and an outer clamping plate (103 b), one end of the outer connecting plate (103 a) is fixedly connected with the clamping jaw of the chuck (102), and the other end of the outer connecting plate (103 a) is fixedly connected with the outer clamping plate (103 b).
3. The thin-walled flexible part holder of claim 2 wherein: an outer guide rail (104) is arranged below each outer connecting plate (103 a), the outer connecting plates (103 a) are connected with the outer guide rails (104) in a sliding mode, and the lower plate surfaces of the outer connecting plates (103 a) are arranged on the outer guide rails (104) and are connected with the outer guide rails (104) in a sliding mode.
4. The thin-walled flexible part holder of claim 2 wherein: the upper plate surfaces of the plurality of outer connecting plates (103 a) support the bottom surface of the inner bottom plate (201).
5. The thin-walled flexible part holder of claim 2 wherein: the clamping surface of the outer clamping plate (103 b) is provided with a plurality of convex blocks (103 c).
6. The thin-walled flexible part holder of claim 4 wherein: when the outer clamping jaws (103) are in a closed clamping state, the upper panels of the outer connecting plates (103 a) jointly form a plane for placing the inner bottom panel (201).
7. The thin-walled flexible part holder of claim 1 wherein: the inner guide rails (202) are uniformly distributed on the inner bottom plate (201) at the geometric center of the inner bottom plate (201), an inner shaft (204) is arranged at the geometric center of the inner bottom plate (201), an inverted conical pressing surface (204 a) is arranged on the inner shaft (204), the inner side ends of the inner clamping jaws (203) are abutted against the pressing surface (204 a) of the inner shaft (204), and each inner clamping jaw (203) is provided with a return spring.
8. The thin-walled flexible part holder of claim 1 wherein: the clamping surface of the inner clamping jaw (203) is provided with a plurality of bulges (203 a).
9. The thin-walled flexible part holder of claim 1 wherein: the number of the outer clamping jaws (103) is the same as that of the inner clamping jaws (203), and the outer clamping jaws (103) and the inner clamping jaws (203) are arranged in a one-to-one correspondence mode.
10. The thin-walled flexible part holder of claim 1 wherein: a groove (203 b) is formed in the top of the middle of the clamping surface of the inner clamping jaw (203);
the shape of the inner bottom plate (201), the clamped outer clamping jaw (103) and the clamped inner clamping jaw (203) corresponds to that of the standard thin-wall flexible part (300) one by one, and the sizes of the standard thin-wall flexible part correspond to that of the standard thin-wall flexible part one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010618229.7A CN111805447A (en) | 2020-06-30 | 2020-06-30 | Thin-wall flexible part clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010618229.7A CN111805447A (en) | 2020-06-30 | 2020-06-30 | Thin-wall flexible part clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111805447A true CN111805447A (en) | 2020-10-23 |
Family
ID=72856442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010618229.7A Pending CN111805447A (en) | 2020-06-30 | 2020-06-30 | Thin-wall flexible part clamp |
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| Country | Link |
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| CN (1) | CN111805447A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112372557A (en) * | 2020-10-27 | 2021-02-19 | 福建信息职业技术学院 | Special-shaped part machining clamping positioning device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2486270Y (en) * | 2001-07-24 | 2002-04-17 | 区达光 | Synchronous expansion and retraction clamp |
| CN206169327U (en) * | 2016-08-29 | 2017-05-17 | 温岭市中达精密钢件有限公司 | Three -jaw positioning fixture floats |
| CN109226798A (en) * | 2018-11-20 | 2019-01-18 | 陕西海力特精密机械有限公司 | The chuck of anti-workpiece deformation |
| CN208601062U (en) * | 2018-06-27 | 2019-03-15 | 雄名航空科工（芜湖）股份有限公司 | A kind of elder generation's inner support outer clip fixture again |
| CN212311846U (en) * | 2020-06-30 | 2021-01-08 | 重庆中核工业自动化控制系统有限公司 | Thin-wall flexible part clamp |
| CN212919045U (en) * | 2020-06-30 | 2021-04-09 | 重庆中核工业自动化控制系统有限公司 | Thin-wall flexible part internal expansion clamp |
-
2020
- 2020-06-30 CN CN202010618229.7A patent/CN111805447A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2486270Y (en) * | 2001-07-24 | 2002-04-17 | 区达光 | Synchronous expansion and retraction clamp |
| CN206169327U (en) * | 2016-08-29 | 2017-05-17 | 温岭市中达精密钢件有限公司 | Three -jaw positioning fixture floats |
| CN208601062U (en) * | 2018-06-27 | 2019-03-15 | 雄名航空科工（芜湖）股份有限公司 | A kind of elder generation's inner support outer clip fixture again |
| CN109226798A (en) * | 2018-11-20 | 2019-01-18 | 陕西海力特精密机械有限公司 | The chuck of anti-workpiece deformation |
| CN212311846U (en) * | 2020-06-30 | 2021-01-08 | 重庆中核工业自动化控制系统有限公司 | Thin-wall flexible part clamp |
| CN212919045U (en) * | 2020-06-30 | 2021-04-09 | 重庆中核工业自动化控制系统有限公司 | Thin-wall flexible part internal expansion clamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112372557A (en) * | 2020-10-27 | 2021-02-19 | 福建信息职业技术学院 | Special-shaped part machining clamping positioning device |
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