CN104308612A - Pneumatic rotary clamping device - Google Patents
Pneumatic rotary clamping device Download PDFInfo
- Publication number
- CN104308612A CN104308612A CN201410536810.9A CN201410536810A CN104308612A CN 104308612 A CN104308612 A CN 104308612A CN 201410536810 A CN201410536810 A CN 201410536810A CN 104308612 A CN104308612 A CN 104308612A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- clamping device
- piston
- helicla flute
- axle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/04—Work clamping means using fluid means or a vacuum
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention relates to a workpiece clamping device, in particular to a pneumatic rotary clamping device. The pneumatic rotary clamping device comprises a cylinder, a pressing arm and a rotary structure, wherein a piston rod of the cylinder is connected with the pressing arm; the rotary structure is fixed in the cylinder and comprises a base and a mandrel; a spiral groove is formed in the axial direction of the mandrel; the mandrel is in coaxial sliding fit with the piston rod from one side of a piston seal of the cylinder; a guide structure matched with the spiral groove is arranged in the piston seal of the cylinder. The pneumatic rotary clamping device facilitates take-out and put-in of a workpiece, and the service life of the piston rod can be prolonged.
Description
Technical field
The present invention relates to a kind of Workpiece clamping device, be specifically related to a kind of Pneumatic rotary clamping device.
Background technology
Clamping device, as the clamping and positioning instrument of workpiece, is widely used in the processing and manufacturing of workpiece.Existing clamping device pressing plate adopts common cylinder as power source, jaw or platen clamp workpiece is driven by the piston rod of cylinder, but the mode of this holding workpiece is at taking-up workpiece with when workpiece is put into Working position, due to the obstruction of jaw or pressing plate, take out or put into the inconvenient operation of workpiece.Be in the rotating clamp of 2013106006670 in Chinese Patent Application No., the pressing plate comprising cylinder and be connected with cylinder piston rod, wherein, helical groove is had in described cylinder piston rod circumference, the casing wall of described cylinder is fixed with a pilot pin, described pilot pin end is placed in described groove, is provided with pad at described cylinder upper surface.The piston rod of this rotating clamp offers helical groove, the pilot pin guiding of piston rod by the casing wall of cylinder is arranged, press plate rotary also leaves clamped position, so, can conveniently take out and put into workpiece.But this mode directly offering helical groove on the piston rod of cylinder obviously can reduce the intensity of piston rod, and because piston rod is subject to along its axial force and torsion, piston rod is easy to fracture.
Summary of the invention
For the defect that above-mentioned prior art exists, the object of the present invention is to provide one to be convenient to take out and put into workpiece, and the Pneumatic rotary clamping device in the service life of piston rod can be extended.
For achieving the above object, technical scheme of the present invention is: Pneumatic rotary clamping device, comprise cylinder and pressure arm, the piston rod of described cylinder is connected with pressure arm, wherein, is also provided with the rotational structure be fixed in cylinder, described rotational structure comprises base and axle, described axle is axially provided with helicla flute, and described axle is coaxially slidably matched from the piston front cover side of cylinder and piston rod, is provided with and coordinates spiral fluted guide frame in described cylinder piston envelope.
When adopting technique scheme, rotational structure is provided with in cylinder, wherein the axle of rotational structure is provided with helicla flute, the piston of cylinder is provided with in sealing and coordinates spiral fluted guide frame in addition, axle is coaxially slidably matched from the piston front cover side of cylinder and piston rod again, so the piston rod of cylinder stretches out or in the process of retracting, guide frame moves along helicla flute, now, the piston envelope of cylinder and piston rod rotate thereupon, be connected to pressure arm on cylinder piston rod also with piston rod rotation, so when pressure arm unclamps from the position of clamping work pieces, pressure arm rotates and leaves clamped position, can conveniently put into and take out workpiece, the present invention offers helicla flute in axle, in the piston envelope of cylinder, spiral fluted guide frame is closed in establishing, instead of establish helicla flute on the piston rod, the globality of piston rod is not destroyed, so the service life of piston rod effectively can be extended.
Further, described guide frame comprises spring base, stage clip and steel ball, and described stage clip one end and steel ball offset, the other end is connected with spring base, and described spring base seals with the piston of cylinder and is connected, and steel ball can roll in the process of guiding, so wearing and tearing are comparatively slow, service time is longer.
Further, the pilot pin that described guide frame comprises mount pad and can coordinate with helicla flute, described pilot pin one end is connected with mount pad, and described mount pad seals with the piston of cylinder and is connected, and adopts pilot pin guide frame simpler.
Further, described axle is provided with 2 ~ 3 along the uniform helicla flute of axle circumference, after helicla flute wearing and tearing, can to use in axle other helicla flute, can increase the service life of rotational structure.
Further, described axle is also provided with and helicla flute continuous print straight-line groove near clamping work pieces side, during clamping work pieces, first pressure arm turns to the position entering to align with band valency, then pressure arm vertical workpiece direction is moved and clamping work pieces, in the moment of contact workpiece, can not in the power of surface of the work time side direction, so the location of workpiece can not offset.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the structural representation of Pneumatic rotary clamping device embodiment of the present invention;
Fig. 2 is the structural representation of the rotational structure of Pneumatic rotary clamping device embodiment of the present invention.
Detailed description of the invention
Embodiment 1
A kind of Pneumatic rotary clamping device, comprise cylinder 1 and pressure arm 4, pressure arm 4 is connected with the piston rod 11 of cylinder 1 by bolt, wherein, also be provided with the rotational structure being positioned at cylinder 1, rotational structure comprises base 23 and the axle 21 of one connection, the longitudinal section of base 23 is boss shape, flange on base 23 and cylinder 1 are bolted, and be provided with sealing ring 25 between base 23 and cylinder 1 inwall, axle 21 is axially provided with helicla flute 22, axle 21 seals 12 sides from the piston of cylinder 1 and piston rod 11 is coaxially slidably matched, the guide frame coordinating helicla flute 22 is provided with in cylinder 1 piston envelope 12.
In the present embodiment, guide frame comprises spring base 31, stage clip 32 and steel ball 33, and stage clip 32 one end and steel ball 33 offset, the other end is connected with spring base 31, and spring base 31 seals 12 with the piston of cylinder 1 and is connected, and steel ball 33 can roll in the process of guiding, so wearing and tearing are comparatively slow, service time is longer.
Axle 21 be provided with 2 wear and tear along the uniform helicla flute of axle 21 circumference 22, helicla flute 22 after, another helicla flute 22 in axle 21 can be used, the service life of rotational structure can be increased.
Axle 21 lower end has and helicla flute 22 continuous print straight-line groove 24, during clamping work pieces 5, first pressure arm 4 turns to the position entering to align with band valency, then pressure arm 4 vertical workpiece 5 direction is moved and clamping work pieces 5, in the moment of contact workpiece 5, can not in the power of workpiece 5 surface time side direction, so workpiece 5 position can not offset.
Embodiment 2
As different from Example 1, the pilot pin that guide frame comprises mount pad and can coordinate with helicla flute 22, pilot pin one end is connected with mount pad, and mount pad seals 12 with the piston of cylinder 1 and is connected, and adopts pilot pin guide frame simpler.
Concrete use flow process:
For embodiment 1, as shown in Figure 1, move down as clamping work pieces 5 is described for pressure arm 4, be illustrated as the state of clamping work pieces 5.In the pore air inlet of the bottom of cylinder 1, now the piston of cylinder 1 seals on 12 and moves, in piston envelope 12, first the steel ball of guide frame moves up along the straight-line groove 24 in axle 21, when moving to helicla flute 22, steel ball slides with helicla flute 22 again, now piston envelope 12 and piston rod 11 track along helicla flute 22 synchronous with steel ball rotate, now pressure arm 4 also synchronous axial system leave the position aligned with workpiece 5, workpiece 5 can be taken out easily.When wanting clamping work pieces 5, workpiece 5 is prevented the clamped position on workbench, in the top pore air inlet of cylinder 1, the piston rod 11 of cylinder 1 and piston envelope 12 move down, and first steel ball slides along helicla flute 22, now, the piston envelope 12 of cylinder 1 and piston rod 11 rotate, and pressure arm 4 also rotates to aligning with workpiece 5 to be clamped thereupon simultaneously, and now steel ball slides into straight-line groove 24 part, subsequently, pressure arm 4 vertically moves down and is clamped by workpiece 5.
Above-described is only the preferred embodiment of the present invention; should be understood that; for a person skilled in the art; under the prerequisite not departing from structure of the present invention; some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.
Claims (5)
1. Pneumatic rotary clamping device, comprise cylinder (1) and pressure arm (4), the piston rod (11) of described cylinder (1) is connected with pressure arm (4), it is characterized in that, also be provided with the rotational structure be fixed in cylinder (1), described rotational structure comprises base (23) and axle (21), described axle (21) is axially provided with helicla flute (22), described axle (21) seals (12) side from the piston of cylinder (1) and piston rod (11) is coaxially slidably matched, and is provided with the guide frame coordinating helicla flute (22) in described cylinder (1) piston envelope.
2. Pneumatic rotary clamping device according to claim 1, it is characterized in that, described guide frame comprises spring base (31), stage clip (32) and steel ball (33), described stage clip (32) one end and steel ball (33) offset, the other end is connected with spring base (31), and described spring base (31) seals (12) with the piston of cylinder (1) and is connected.
3. Pneumatic rotary clamping device according to claim 1, it is characterized in that, the pilot pin that described guide frame comprises mount pad and can coordinate with helicla flute (22), described pilot pin one end is connected with mount pad, and described mount pad seals (12) with the piston of cylinder (1) and is connected.
4. Pneumatic rotary clamping device according to claim 1, is characterized in that, described axle (21) is provided with 2 ~ 3 along the uniform helicla flute (22) of axle (21) circumference.
5. Pneumatic rotary clamping device according to claim 1, is characterized in that, described axle (21) is upper to be also provided with and helicla flute (22) continuous print straight-line groove (24) near clamping work pieces side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410536810.9A CN104308612A (en) | 2014-10-13 | 2014-10-13 | Pneumatic rotary clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410536810.9A CN104308612A (en) | 2014-10-13 | 2014-10-13 | Pneumatic rotary clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104308612A true CN104308612A (en) | 2015-01-28 |
Family
ID=52363995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410536810.9A Pending CN104308612A (en) | 2014-10-13 | 2014-10-13 | Pneumatic rotary clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104308612A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107186507A (en) * | 2017-06-30 | 2017-09-22 | 上海纳铁福传动系统有限公司 | Angular positioner is used in the production of three pin shaft forks |
| CN109590786A (en) * | 2018-12-29 | 2019-04-09 | 伯恩高新科技（惠州）有限公司 | A kind of rotating mechanism and the fixture using the rotating mechanism |
| CN110181435A (en) * | 2019-06-03 | 2019-08-30 | 广东天机工业智能系统有限公司 | Positioning device |
| CN110434378A (en) * | 2019-09-09 | 2019-11-12 | 温州职业技术学院 | Large scale channel bend intelligence beveler machine tool |
| CN111219379A (en) * | 2020-02-27 | 2020-06-02 | 徐州工程学院 | Plunger rod rotary type plunger hydraulic cylinder for construction machinery |
| CN111468964A (en) * | 2020-04-22 | 2020-07-31 | 南京佳和牙科技术有限公司 | Quick clamping and rotating mechanism of numerical control machine tool |
| CN112720011A (en) * | 2021-01-21 | 2021-04-30 | 深圳市蓝蓝科技有限公司 | CNC automatic material grabbing knife handle |
| CN114939794A (en) * | 2022-06-06 | 2022-08-26 | 苏州鑫凯达精密机械有限公司 | Universal quick clamping device with controllable clamping force |
-
2014
- 2014-10-13 CN CN201410536810.9A patent/CN104308612A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107186507B (en) * | 2017-06-30 | 2019-02-22 | 上海纳铁福传动系统有限公司 | Three pin shaft forks produce angular positioning device |
| CN107186507A (en) * | 2017-06-30 | 2017-09-22 | 上海纳铁福传动系统有限公司 | Angular positioner is used in the production of three pin shaft forks |
| CN109590786A (en) * | 2018-12-29 | 2019-04-09 | 伯恩高新科技（惠州）有限公司 | A kind of rotating mechanism and the fixture using the rotating mechanism |
| CN110181435B (en) * | 2019-06-03 | 2020-12-08 | 广东天机工业智能系统有限公司 | Positioning device |
| CN110181435A (en) * | 2019-06-03 | 2019-08-30 | 广东天机工业智能系统有限公司 | Positioning device |
| CN110434378A (en) * | 2019-09-09 | 2019-11-12 | 温州职业技术学院 | Large scale channel bend intelligence beveler machine tool |
| CN110434378B (en) * | 2019-09-09 | 2020-11-24 | 温州职业技术学院 | Intelligent chamfering machine tool for large-size pipeline elbow |
| CN111219379A (en) * | 2020-02-27 | 2020-06-02 | 徐州工程学院 | Plunger rod rotary type plunger hydraulic cylinder for construction machinery |
| CN111468964A (en) * | 2020-04-22 | 2020-07-31 | 南京佳和牙科技术有限公司 | Quick clamping and rotating mechanism of numerical control machine tool |
| CN111468964B (en) * | 2020-04-22 | 2021-04-27 | 南京佳和牙科技术有限公司 | Quick clamping and rotating mechanism of numerical control machine tool |
| CN112720011A (en) * | 2021-01-21 | 2021-04-30 | 深圳市蓝蓝科技有限公司 | CNC automatic material grabbing knife handle |
| CN112720011B (en) * | 2021-01-21 | 2023-02-28 | 深圳市蓝蓝科技有限公司 | CNC automatic material grabbing knife handle |
| CN114939794A (en) * | 2022-06-06 | 2022-08-26 | 苏州鑫凯达精密机械有限公司 | Universal quick clamping device with controllable clamping force |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150128 |
|
| WD01 | Invention patent application deemed withdrawn after publication |