CN112658884A - Flexible positioning fixture is held to rotatory station air supporting internal stay - Google Patents
Flexible positioning fixture is held to rotatory station air supporting internal stay Download PDFInfo
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- CN112658884A CN112658884A CN202011312089.7A CN202011312089A CN112658884A CN 112658884 A CN112658884 A CN 112658884A CN 202011312089 A CN202011312089 A CN 202011312089A CN 112658884 A CN112658884 A CN 112658884A
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Abstract
The invention discloses a rotary station air-floating inner-supporting flexible positioning fixture, and belongs to the technical field of fixture equipment. The method comprises the following steps: the floating heads are arranged at one end of the positioning fixture in an annular array and are in contact with the inner wall of the clamping part, each floating head is divided into a first clamping area and a second clamping area along the axial direction of the clamping part, the first clamping area or the second clamping area of the same floating head is in driving connection with the driving part, and the first clamping area or the second clamping area connected with the driving part can reciprocate along the radial direction of the clamping part; the first clamping area of one pneumatic floating head is connected with a driving part, and the second clamping areas of two adjacent floating heads are connected with the driving part. This flexible positioning fixture is held to rotatory station air supporting internal stay, simple structure, the function is realized reliably, guarantees the centre gripping precision to the centre gripping work piece, can also realize flexible centre gripping.
Description
Technical Field
The invention relates to the technical field of clamp equipment, in particular to a rotary station air floatation inner support holding flexible positioning clamp.
Background
At present, in the automatic application process of polishing, assembling, feeding and discharging of a robot, a three-finger cylinder is generally adopted to clamp a corresponding workpiece, but when the three-finger cylinder is used to clamp a thin-wall workpiece such as a vacuum cup or the like or a workpiece with a large geometric roundness error range, the workpiece is deformed due to the large clamping force of the three-finger cylinder, so that the self-out-of-roundness of the workpiece is increased; in addition, the self-coaxiality of the workpiece is poor, so that the positioning error is large, the workpiece jumps when rotating, and the integral machining quality is influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the rotary station air floatation inner support holding flexible positioning fixture is provided, the annular inner support is clamped with a corresponding workpiece, the clamping stress is uniform, the workpiece is prevented from deforming, and the processing quality of the whole workpiece is improved.
The specific technical scheme is as follows:
the utility model provides a flexible positioning fixture is held to rotatory station air supporting internal stay, mainly includes: a plurality of floating heads.
The floating heads are arranged at one end of the positioning fixture in an annular array and are in contact with the inner wall of the clamping part, each floating head is divided into a first clamping area and a second clamping area along the axial direction of the clamping part, the first clamping area or the second clamping area of the same floating head is in driving connection with the driving part, and the first clamping area or the second clamping area connected with the driving part can reciprocate along the radial direction of one end of the positioning fixture; the first clamping area of one pneumatic floating head is connected with a driving part, and the second clamping areas of two adjacent floating heads are connected with the driving part.
The rotary station air floating internal support holding flexible positioning fixture is further characterized by further comprising a plurality of rubber sleeves, wherein the rubber sleeves are arranged on one side of the floating head, which faces the clamping part, and the rubber sleeves are arranged in the first clamping area and/or the second clamping area.
The rotary station air floating inner support holding flexible positioning fixture is further characterized by comprising rotary heads and rotary shafts which are connected with each other, wherein the plurality of floating heads are movably connected with the rotary heads and can rotate around the axis direction of the rotary shafts.
The rotary station air-floating inner-support holding flexible positioning fixture is further characterized in that a limiting plate is further arranged on the rotary head, and the limiting plate is in contact with the driving piece.
The rotary station air-floating inner-supporting flexible positioning fixture is characterized by further comprising a blocking ring, wherein the blocking ring is sleeved on the outer side of the rotary shaft, and one axial end of the blocking ring abuts against one end of the clamping part.
The rotary station air floating inner support holding flexible positioning clamp is characterized by further comprising a synchronous belt wheel, the synchronous belt wheel is sleeved at one end, deviating from the rotary head, of the rotary shaft, and the synchronous belt wheel is in driving connection with an external rotary driver.
The rotary station air floating inner support holding flexible positioning clamp is further characterized in that the synchronous belt wheel is fixedly connected with the rotary shaft through a key and a threaded fastener.
The rotary station air-floating inner support holding flexible positioning fixture is characterized in that the driving piece is a pneumatic driving piece, a rotary joint is arranged at one end of the rotary shaft, which is far away from the rotary head, an air channel is arranged in the rotary shaft in a penetrating mode, and two ends of the air channel are communicated with the rotary joint and the pneumatic driving piece respectively.
The rotary station air floating inner support holding flexible positioning fixture is further characterized by further comprising a first sealing ring, a second sealing ring and a third sealing ring, wherein the first sealing ring is arranged between the retaining ring and the clamping part, the second sealing ring is arranged between the rotary head and the rotary shaft, and the third sealing ring is sleeved on the outer side of the driving part.
The rotary station air floating inner support holding flexible positioning fixture is characterized by further comprising a flange, wherein the flange is sleeved on the outer side of the rotating shaft, and a plurality of bearings are arranged between the rotating shaft and the flange.
The positive effects of the technical scheme are as follows:
according to the rotary station air-floating inner support holding flexible positioning fixture, the corresponding workpiece is held in an annular inner support mode, the holding stress is uniform, the workpiece can be prevented from deforming, and the processing quality of the whole workpiece is improved; in addition, a plurality of sealing rings are arranged, so that when the workpiece is polished, the chip powder is prevented from entering the inner cavity of the workpiece and the inside of the positioning clamp; elastic materials such as rubber are arranged on the surface of the floating head, so that the workpiece is prevented from being scratched in the clamping process of the floating head; through set up the sealing washer between revolving head and revolving axle to provide the ascending flexible location of axial, the head is floated in order to realize the flexibility of rotatory station to prop simultaneously to hold, solves the polishing error that the in-process of polishing produced because the axiality error, has promoted the precision of polishing.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a rotary station air-floating inner-supporting flexible positioning fixture according to the present invention;
FIG. 2 is a schematic structural view of a positioning fixture and a clamping part in an embodiment of a rotary station air-floating inner-supporting flexible positioning fixture according to the present invention;
FIG. 3 is a perspective view of an embodiment of a rotary station air-floating inner-supporting flexible positioning fixture with a rubber sleeve according to the present invention;
FIG. 4 is a perspective view of a rotary station air-floating inner-supporting flexible positioning fixture without a rubber sleeve in an embodiment of the present invention;
FIG. 5 is a side view of an embodiment of a rotary station air-floating internal support holding flexible positioning fixture of the present invention.
1. A turret head; 2. a rotating shaft; 3. a floating head; 4. a limiting plate; 5. a drive member; 6. a third seal ring; 7. a baffle ring; 8. a first seal ring; 9. a second seal ring; 10. a flange; 11. a bearing; 12. a gasket; 13. a round nut; 14. a synchronous pulley; 15. a threaded fastener; 16. a key; 17. a rotary joint; 18. a rubber sleeve; 19. clamping the part; 20. and (6) air channels.
Detailed Description
In order to make the technical means, creation features, achievement purposes and effects of the present invention easy to understand, the following embodiments specifically describe a rotary station air-floating inner-supporting flexible positioning fixture provided by the present invention with reference to fig. 1 to 5.
The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the rotary station air-floating inner-supporting flexible positioning fixture, referring to fig. 1 to 4, a plurality of floating heads 3 are arranged at one end of the positioning fixture in an annular array, the plurality of floating heads 3 are in contact with the inner wall of a clamping part 19, and are tightly attached to the inner side wall of the clamping part 19 through the opening of the floating heads 3, so that the clamping part 19 is positioned and clamped, and the subsequent processing requirement on the clamping part 19 is met, wherein each floating head 3 is divided into a first clamping area and a second clamping area along the axial direction of a clamping part, and the specific first clamping area and the specific second clamping area are arranged in a separated manner, namely, the first clamping area generates displacement movement, the second clamping area can be kept still, the second clamping area generates displacement movement, and the first clamping area can be kept still; the first clamping area or the second clamping area of the same floating head 3 is in driving connection with the driving part 5, the first clamping area or the second clamping area connected with the driving part 5 can move back and forth along the radial direction of one end of the positioning clamp, specifically, part of the first clamping area and part of the second clamping area extend to tightly abut against the inner side of the clamping part 19, and the first clamping area and the second clamping area are located at different positions in the axial direction of the floating head 3, so that different areas in the axial direction of the inner side of the clamping part 19 can be clamped; wherein the first clamping area of head 3 that floats is connected with driving piece 5, the second clamping area of its two adjacent head 3 that float is connected with driving piece 5, in order promptly, the first clamping area of a head 3 that floats is connected with driving piece 5, the second clamping area of a head 3 that floats is connected with driving piece 5, staggered arrangement in proper order, thereby promote the holistic centre gripping precision of head 3 that floats, the head 3 that floats provides radial ascending centre gripping location for this clamping part.
In a preferred embodiment, as shown in fig. 1 and fig. 2, the floating head further includes a plurality of rubber sleeves 18, the rubber sleeves 18 are disposed on a side of the floating head 3 facing the clamping part 19, specifically, the rubber sleeves 18 may be fixed on the floating head 3 by gluing or fastening, and the rubber sleeves 18 are disposed in the first clamping area and/or the second clamping area, that is, the rubber sleeves 18 are disposed in both the first clamping area and the second clamping area, or the rubber sleeves 18 are disposed in only the first clamping area and the second clamping area connected to the driving member 5, and the rubber sleeves 18 can be used to prevent the floating head 3 from clamping the inner side of the clamping part 19 during the clamping process, and besides rubber, other materials with certain elasticity, such as silicone, can be used.
In a preferred embodiment, as shown in fig. 1 and 2, the apparatus further comprises a rotary head 1 and a rotary shaft 2 connected to each other, the plurality of floating heads 3 are movably connected to the rotary head 1, the plurality of floating heads 3 are rotatable in the axial direction of the rotary shaft 2, and the holding member 19 is rotatable by the floating heads 3 by providing the rotary shaft 2.
In a preferred embodiment, as shown in fig. 1, fig. 2 and fig. 5, a limiting plate 4 is further disposed on the turret head 1, the limiting plate 4 is in contact with the driving element 5, the limiting plate 4 can limit the movement of the driving element 5, the driving element 5 specifically includes a fixed part and a movable part, and the limiting plate 4 is used for limiting the play of the fixed part of the driving element to improve the clamping accuracy of the floating head 3.
In a preferred embodiment, as shown in fig. 1 and fig. 2, the clamping device further comprises a stop ring 7, the stop ring 7 is sleeved outside the rotating shaft 2, and an axial end of the stop ring 7 abuts against an end of the clamping part 19, the stop ring 7 is used for limiting the extending depth of the clamping part 19 on the positioning fixture, so as to provide axial clamping positioning for the clamping part 19.
In a preferred embodiment, as shown in fig. 1 and fig. 2, a synchronous pulley 14 is further included, the synchronous pulley 14 is sleeved on an end of the revolving shaft 2 facing away from the revolving head 1, the synchronous pulley 14 is drivingly connected to an external rotary driver, and the external rotary driver may drive the synchronous pulley 14 to rotate through a transmission belt or a transmission chain.
In a preferred embodiment, as shown in fig. 1 and 2, the timing pulley 14 is fixedly connected to the rotating shaft 2 by a key 16 and a threaded fastener 15.
In a preferred embodiment, as shown in fig. 1 and fig. 2, the driving member 5 is a pneumatic driving member, a specific pneumatic driving member may be a plunger, a rotary joint 17 is disposed at one end of the rotary shaft 2 away from the rotary head 1, and an air passage 20 is disposed through the rotary shaft 2, wherein two ends of the air passage 20 are respectively communicated with the rotary joint 17 and the pneumatic driving member, and the expansion and contraction of a movable part of the plunger are controlled by connecting an external air passage, so as to control the expansion and contraction of the first clamping area or the second clamping area on the pneumatic floating head; the drive member 5 may furthermore also be an electric drive member,
in a preferred embodiment, as shown in fig. 1 and fig. 2, the clamp further includes a first seal ring 8, a second seal ring 9 and a third seal ring 6, wherein the first seal ring 8 is disposed between the baffle ring 7 and the clamping part 19, when the clamping part 19 is ground and polished, the entry of the debris powder into the inner cavity of the workpiece is prevented, the second seal ring 9 is disposed between the rotary head 1 and the rotary shaft 2, so that the elastic adjustment is performed between the rotary head 1 and the rotary shaft 2, and the flexible support is further performed on the inner surface rotation station of the thin-walled cylindrical workpiece, thereby avoiding the grinding error caused by the coaxiality error during the grinding process, the third seal ring 6 is sleeved outside the driving member 5, and when the clamping part 19 is ground and polished, the entry of the debris powder into the movable part of the clamp and the working surface is avoided.
In a preferred embodiment, as shown in fig. 1 and 2, a flange 10 is further included, the flange 10 is sleeved outside the rotating shaft 2, the positioning clamp is connected to an external structure through the flange 10, a plurality of bearings 11 are further disposed between the rotating shaft 2 and the flange 10, that is, the flange 10 and the rotating shaft 2 can rotate relative to each other, the flange 10 provides a radial support for the rotating shaft 2, further, a round nut 13 is further sleeved on an outer side wall of the rotating shaft 2, a gasket 12 is further disposed between the round nut 13 and the flange 10, and the specific position of the flange 10 on the rotating shaft 2 is fixed through the gasket 12 and the round nut 13, so as to ensure that the flange 10 does not move in the axial direction of the rotating shaft 2.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a flexible positioning fixture is held to rotatory station air supporting internal stay which characterized in that includes:
the floating heads are arranged at one end of the positioning fixture in an annular array and are in contact with the inner wall of the clamping part, each floating head is divided into a first clamping area and a second clamping area along the axial direction of the clamping part, the first clamping area or the second clamping area of the same floating head is in driving connection with a driving part, and the first clamping area or the second clamping area connected with the driving part can reciprocate along the radial direction of one end of the positioning fixture; the first clamping area of one pneumatic floating head is connected with the driving part, and the second clamping areas of two adjacent floating heads are connected with the driving part.
2. The rotary station air-floating inner-supporting flexible positioning fixture as claimed in claim 1, further comprising a plurality of rubber sleeves, wherein the rubber sleeves are disposed on a side of the floating head facing the clamping component, and the rubber sleeves are disposed in the first clamping area and/or the second clamping area.
3. The rotary station air-floating inner-supporting flexible positioning fixture as claimed in claim 1, further comprising a rotary head and a rotary shaft connected with each other, wherein the plurality of floating heads are movably connected with the rotary head, and the plurality of floating heads can rotate around the axial direction of the rotary shaft.
4. The rotary station air-floating inner-supporting flexible positioning fixture as claimed in claim 3, wherein a limiting plate is further arranged on the rotary head, and the limiting plate is in contact with the driving member.
5. The rotary station air-floating inner-supporting flexible positioning fixture as claimed in claim 3, further comprising a blocking ring, wherein the blocking ring is sleeved outside the rotating shaft, and one axial end of the blocking ring abuts against one end of the clamping part.
6. The rotary station air-floating inner-supporting flexible positioning fixture as claimed in claim 3, further comprising a synchronous pulley, wherein the synchronous pulley is sleeved at one end of the rotary shaft away from the rotary head, and the synchronous pulley is in driving connection with an external rotary driver.
7. The rotary station air-floating inner-supporting flexible positioning fixture as claimed in claim 6, wherein the synchronous pulley and the rotary shaft are fixedly connected through a key and a threaded fastener.
8. The rotary station air-floating inner-supporting flexible positioning fixture as claimed in claim 3, wherein the driving member is a pneumatic driving member, a rotary joint is disposed at one end of the rotary shaft away from the rotary head, and an air passage is disposed in the rotary shaft, wherein two ends of the air passage are respectively communicated with the rotary joint and the pneumatic driving member.
9. The rotary station air-floating inner-support flexible positioning fixture as claimed in claim 3, further comprising a first seal ring, a second seal ring and a third seal ring, wherein the first seal ring is disposed between the stop ring and the clamping component, the second seal ring is disposed between the rotary head and the rotary shaft, and the third seal ring is sleeved on the outer side of the driving component.
10. The rotary station air-floating inner-supporting flexible positioning fixture as claimed in claim 3, further comprising a flange, wherein the flange is sleeved outside the rotating shaft, and a plurality of bearings are further arranged between the rotating shaft and the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011312089.7A CN112658884A (en) | 2020-11-20 | 2020-11-20 | Flexible positioning fixture is held to rotatory station air supporting internal stay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011312089.7A CN112658884A (en) | 2020-11-20 | 2020-11-20 | Flexible positioning fixture is held to rotatory station air supporting internal stay |
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| Publication Number | Publication Date |
|---|---|
| CN112658884A true CN112658884A (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011312089.7A Pending CN112658884A (en) | 2020-11-20 | 2020-11-20 | Flexible positioning fixture is held to rotatory station air supporting internal stay |
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| CN (1) | CN112658884A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5324050A (en) * | 1993-05-27 | 1994-06-28 | Jacobs Chuck Technology Corp. | Sealing collet |
| CN101367132A (en) * | 2007-10-19 | 2009-02-18 | 马进中 | Clamping device of machine tool capable of processing thin-wall workpiece of revolution body |
| CN203738051U (en) * | 2014-01-14 | 2014-07-30 | 广州枫叶管业有限公司 | Socket-and-spigot joint machining clamp for machining |
| CN205324774U (en) * | 2015-12-29 | 2016-06-22 | 茂名市第二高级技工学校 | Thin wall part internal expanding formula anchor clamps |
| CN205834286U (en) * | 2016-07-22 | 2016-12-28 | 江苏建筑职业技术学院 | Cast workpiece internal expansion type turning tool |
| DE102015114889A1 (en) * | 2015-09-04 | 2017-03-09 | Festo Ag & Co. Kg | Internal clamping screw |
| CN107626941A (en) * | 2017-11-10 | 2018-01-26 | 中国石油天然气集团公司 | A kind of inner supporting device of tubing external screw thread processing |
| CN207325973U (en) * | 2017-06-29 | 2018-05-08 | 华意压缩机股份有限公司 | Compressor trachea school pipe anchor clamps |
-
2020
- 2020-11-20 CN CN202011312089.7A patent/CN112658884A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5324050A (en) * | 1993-05-27 | 1994-06-28 | Jacobs Chuck Technology Corp. | Sealing collet |
| CN101367132A (en) * | 2007-10-19 | 2009-02-18 | 马进中 | Clamping device of machine tool capable of processing thin-wall workpiece of revolution body |
| CN203738051U (en) * | 2014-01-14 | 2014-07-30 | 广州枫叶管业有限公司 | Socket-and-spigot joint machining clamp for machining |
| DE102015114889A1 (en) * | 2015-09-04 | 2017-03-09 | Festo Ag & Co. Kg | Internal clamping screw |
| CN205324774U (en) * | 2015-12-29 | 2016-06-22 | 茂名市第二高级技工学校 | Thin wall part internal expanding formula anchor clamps |
| CN205834286U (en) * | 2016-07-22 | 2016-12-28 | 江苏建筑职业技术学院 | Cast workpiece internal expansion type turning tool |
| CN207325973U (en) * | 2017-06-29 | 2018-05-08 | 华意压缩机股份有限公司 | Compressor trachea school pipe anchor clamps |
| CN107626941A (en) * | 2017-11-10 | 2018-01-26 | 中国石油天然气集团公司 | A kind of inner supporting device of tubing external screw thread processing |
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Application publication date: 20210416 |
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