CN202377794U - Rotary working table clamping device - Google Patents
Rotary working table clamping device Download PDFInfo
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- CN202377794U CN202377794U CN201120539838XU CN201120539838U CN202377794U CN 202377794 U CN202377794 U CN 202377794U CN 201120539838X U CN201120539838X U CN 201120539838XU CN 201120539838 U CN201120539838 U CN 201120539838U CN 202377794 U CN202377794 U CN 202377794U
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- oil
- oil cylinder
- clamping device
- piston
- pipe joint
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Abstract
The utility model discloses a rotary working table clamping device which comprises a clamping body, an oil cylinder and a piston rod. The clamping body is provided with an upper guiding rail plate and a lower guiding rail plate which are arranged in parallel; a gear is arranged between the upper guiding rail plate and the lower guiding rail plate; the upper end and the lower end of the clamping body are respectively provided with a limiting mechanism; the oil cylinder is arranged under the limiting mechanism on the lower end and provided with an oil cavity; the lower end of the oil cavity is provided with an opening; the outer side of the oil cylinder is provided with a first pipe joint and a second pipe joint; the oil cavity is internally provided with a piston; the piston separates a first oil passage from a second oil passage and is provided with a convex ring; a pressing plate is embedded on the lower end of the oil cylinder; a gap is left between the oil cylinder and the pressing plate in the vertical direction; and the piston rod vertically penetrates through the clamping body, the limiting mechanisms, the oil cylinder and the pressing plate. The rotary working table clamping device is simple in structure, stable in performance and easy to install and debug. The stability of the pre-tightening force is guaranteed effectively through oil pressure. The processing efficiency of the workpiece is improved to a certain extent, and the production cost is saved.
Description
Technical field
The utility model relates to the clamping device of workbench, particularly, relates to a kind of rotary table clamping device.
Background technology
China is a lathe demand big country, and every year all need be from a large amount of lathes of external import, particularly large-scale, heavy machine tool.In recent years, complex milling machine tool demand at home also increases day by day, and complex milling machine tool is fused into one with the function of lathe and milling machine, the ability maximum possible satisfy the requirement of user to workpiece working (machining) efficiency, process automation.But the operation principle of lathe and milling machine is different fully, and lathe is to adopt the workbench rotation, and the non-rotary mode of cutter realizes processing; Milling machine is to adopt the cutter rotation, and the non-rotary mode of workbench is processed.For complex milling machine tool, there is the car function to be converted into when milling function, will workbench be transferred to fixingly by rotation, therefore, just need a cover table latch device.
At present, the gripping mechanism of rotary table roughly can be divided into following several kinds: a kind of is to be positioned at workbench inside, is installed in the clamping device on the base, and the mode that this clamping device adopts the inclined-plane to clamp the inner annulus of gear ring clamps (workbench is inner to be clamped); Another kind is mounted in the clamping device of chassis outer side, and this clamping device adopts the mode of arc surface clamping table lower end flange to clamp.These two kinds of clamping modes, the basic principle of employing is the same, because the spacing between the working face is very little; And clamping area is an arc surface, and therefore, Installation and Debugging are difficulty very; Deviation is arranged slightly, and in the turning course of workbench, gear ring or workbench flange can bump with clamping device; Thereby influence the operate as normal of lathe, reduce production efficiency.In addition; Also have T type supporting plate tension formula, steel ball Draw bar lock compact form; T type supporting plate tension formula clamp mechanism adopts the mode of four conical surface positioning supports or center support, and the clamping force and the work top strong point often can not be concentric, make work top under the effect of clamping force, produce excessive distortion; Directly influence the precision of rotary table table top, and then influence the machining accuracy of lathe.Though steel ball Draw bar lock compact form has been realized the clamping to workbench, clamping force is less relatively.Simultaneously big, the inconvenient installation of complex operation, labour intensity, maintenance difficult, inefficiency, poor reliability etc.
With reference to prior art shown in Figure 1, utilize clamping main body 45 upper ends, the clamping structure 34 that is positioned at gear ring clamps; Contact area is less, and because work table rotation, so the groove in the gear ring is circular; In order to reach clamping action; Spacing between the groove in clamping structure and the gear ring is very little, and therefore, Installation and Debugging are difficulty very.If, install improperly, cause workbench probably rotating the time, bump with clamping device, damage clamping device.
Therefore, provide a kind of rotary table clamping device simple in structure, stable performance just to seem particularly important.
The utility model content
The purpose of the utility model is to solve in the prior art to cause workbench rotating the time, bumps with clamping device, damages the deficiency of clamping device.
The utility model discloses a kind of rotary table clamping device, wherein, comprising:
Clamping body, it has the U type breach of a horizontal direction opening, is respectively arranged with the upper rail plate and the lower guideway plate of opposing parallel on upper and lower two medial surfaces of said U type breach, and gear is between upper rail plate and lower guideway plate;
The upper and lower side of said clamping body is provided with a position-limit mechanism;
Oil cylinder, be positioned at said clamping body lower end position-limit mechanism under, said oil cylinder has the oil pocket of a lower ending opening; The said oil cylinder outside is equipped with first pipe joint and second pipe joint; Said first pipe joint connects first oil circuit, and said second pipe joint connects second oil circuit, and said first oil circuit and second oil circuit are connected the top and bottom of said oil pocket respectively; Be provided with piston in the said oil pocket; Said piston is isolated said first oil circuit and second oil circuit, and said piston has a bulge loop, and said bulge loop seals the lower ending opening of said oil pocket;
Said oil cylinder lower end is embedded with pressing plate, and said oil cylinder and said pressing plate in the vertical direction have the gap.
Piston rod vertically connects said clamping body, position-limit mechanism, oil cylinder and said pressing plate, and said piston rod is the axle of a band ladder;
The two ends of said piston rod are arranged with locking nut.
Above-mentioned rotary table clamping device, wherein, said position-limit mechanism comprises protruding briquetting and the recessed briquetting that sphere cooperates, said protruding briquetting and recessed briquetting all are placed on the said piston rod.
Above-mentioned rotary table clamping device, wherein, said oil cylinder comprises detachable cylinder body and oil cylinder cover, said oil cylinder cover is positioned at said cylinder body below, is fixedly connected said cylinder body through screw.
Above-mentioned rotary table clamping device, wherein, said first pipe joint is arranged on the outside of said cylinder body, and said second pipe joint is arranged on the outside of said oil cylinder cover.
Above-mentioned rotary table clamping device wherein, also comprises flange, is arranged on said oil cylinder upper end, contacts with said clamping body lower end position-limit mechanism.
The contact-making surface of the upper rail plate of the utility model, lower guideway plate and gear is the plane, can under the effect of less oil pressure, produce bigger clamping force; Through having the clamping body of spring performance, realize the deformation of clamping body; The protruding briquetting of sphere contact and the mechanism that recessed briquetting forms are set, play corrective action, can guarantee piston rod in the process that moves up and down, only realize rectilinear motion up and down.
The utility model has the advantages that:
1. simple in structure, stable performance is installed, is debugged easily;
2. effectively guaranteed the stability of pretightning force through oil pressure;
3. the clamping device manufacturing cost is comparatively cheap, and turnning and milling function conversion efficiency is high;
4. improve the working (machining) efficiency of workpiece to a certain extent, saved production cost.
Description of drawings
Through reading the detailed description of non-limiting example being done with reference to following accompanying drawing, it is more obvious that the utility model and characteristic thereof, profile and advantage will become.Mark identical in whole accompanying drawings is indicated identical part.Painstakingly proportionally do not draw accompanying drawing, focus on illustrating the purport of the utility model.In the accompanying drawings, for cheer and bright, amplified the part parts, for same parts, only indicated wherein part, those skilled in the art can combine the specific embodiment partly to understand.
Fig. 1 shows prior art, a kind of structural representation of rotary table clamping device; And
Fig. 2 shows according to a specific embodiment of the utility model, a kind of structural representation of rotary table clamping device.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is further elaborated.The specific embodiment described herein only is used to explain the utility model, and is not used in the protection domain that limits the utility model.
With reference to a kind of rotary table clamping device illustrated in fig. 2; Particularly; Comprise: clamping body 1, it has the U type breach (not indicating among Fig. 2) of a horizontal direction opening, upper and lower two medial surfaces of said U type breach; Be respectively arranged with the upper rail plate 7 and lower guideway plate 8 of opposing parallel, gear 19 is between upper rail plate 7 and lower guideway plate 8; The upper and lower side of said clamping body 1 is provided with a position-limit mechanism 5; Oil cylinder 15, be positioned at said clamping body 1 lower end position-limit mechanism 5 under, said oil cylinder 15 has the oil pocket 23 of a lower ending opening; Said oil cylinder 15 outsides are equipped with first pipe joint 11 and second pipe joint 12; Said first pipe joint 11 connects first oil circuit 21, and said second pipe joint 12 connects second oil circuit 22, and said first oil circuit 21 and second oil circuit 22 are connected the top and bottom of said oil pocket 23 respectively; Be provided with piston 18 in the said oil pocket 23; Said piston 18 is isolated said first oil circuit 21 and second oil circuit 22, and said piston 18 has a bulge loop (not indicating among Fig. 2), and said bulge loop seals the lower ending opening of said oil pocket 23; Said oil cylinder 15 lower ends are embedded with pressing plate 16, and said oil cylinder 15 has the gap with said pressing plate 16 in the vertical directions; Piston rod 2 vertically connects said clamping body 1, position-limit mechanism 5, oil cylinder 15 and said pressing plate 16, and said piston rod 2 is axles of a band ladder; Among the embodiment shown in Figure 2; Shaft shoulder place, a place in cylinder body 13, the lower end of axle exceed cylinder body 13 inboard tables, form certain interval; The two ends of said piston rod 2 are arranged with locking nut 3 (another does not indicate), and among Fig. 2, the side of locking nut 3 is provided with jackscrew 4, are used to prevent that locking nut 3 is loosening.
Be arranged so that piston rod 2, the piston 18 in the clamping device that it will be appreciated by those skilled in the art that the gap have activity space, and this is a prior art, does not repeat them here.
As shown in Figure 2; Said position-limit mechanism 5 comprises the protruding briquetting 10 and recessed briquetting 9 that sphere cooperates, and said protruding briquetting 10 all is placed on the said piston rod 2 with recessed briquetting 9, the protruding briquetting 10 and recessed briquetting 9 of sphere contact; Its conformability is fine; Main effect is the effect of playing the adjustment center, guarantees that piston keeps linear pattern in the process of moving up and down, and can not deflect.
Further, said oil cylinder 15 comprises detachable cylinder body 13 and oil cylinder cover 20, and said oil cylinder cover 20 is positioned at said cylinder body 13 belows; Be fixedly connected said cylinder body 13 through screw; Such easy design dismounting makes piston 18 can be placed in the said cylinder body 13, piston 18 and cylinder body 13 inner surface contact positions; The sealing ring that all distributing is used to prevent that cylinder body 13 inner hydraulic oil from overflowing cylinder body 13.
Preferably, said first pipe joint 11 is arranged on the outside of said cylinder body 13, and said second pipe joint 12 is arranged on the outside of said oil cylinder cover 20.
Above-mentioned rotary table clamping device wherein, also comprises flange 17; Be arranged on said oil cylinder 15 upper ends, as shown in Figure 2, flange 17 upper surfaces contact with said clamping body 1 lower end position-limit mechanism 5; It will be appreciated by those skilled in the art that flange 17 is installed in the upper end of cylinder body 13 through screw, the endoporus of flange 17 cooperates with piston rod 2; Lower end at flange 17 is equipped with sealing ring, is used to prevent that hydraulic oil from overflowing.
It will be apparent to those skilled in the art that; Gap in the structure of the utility model can be provided with as required; In a specific embodiment; Remain with the gap of 0.1mm between piston 18 upper surfaces and oil cylinder 13 inner surfaces, and the lower surface of piston 18 exceeds oil cylinder cover 20 inner surface 0.1mm, the upper surface of pressing plate 16 and oil cylinder cover 20 inner surfaces equally also keep the gap of 2mm.The gap that also keeps 2mm between the upper surface of piston 18 and oil cylinder cover 20.
When needing clamping table, when lathe needed clamping table, hydraulic oil was through first pipe joint 11; Via first oil circuit 21, get into oil pocket 23, piston 18 moves downward under the effect of hydraulic oil; The gap of reservation is identical between the gap that keeps between piston 18 and the oil cylinder cover 20 and pressing plate 16 and the oil cylinder cover 20, and the lower end of piston 18 exceeds oil cylinder cover 0.1mm, therefore; When piston 18 moved downward 2mm, piston 18 will promote the micrometric displacement that pressing plate 16 is 0.1mm downwards.Because the lower end of pressing plate 16 and the locking nut 3 of downside are close to, and when pressing plate 16 moves downward, can drive locking nut 3 and move downward; And locking nut 3 is installed on the piston rod 2, thereby can drive piston rod 2 and the part that is installed on the piston rod 2 moves downward together, and then the position-limit mechanism 5 that drives clamping body 1 top moves downward; As shown in Figure 2; Because the recessed briquetting 6 and the clamping body 1 of top position-limit mechanism 5 are close to, and the upper part of clamping body 1 and upper rail plate 7 are moved downward, under the effect of certain oil pressure; Can make upper rail plate 7 move downward 0.1mm, thereby make upper rail plate 7 clamp gear 19; Because only there are 0.1mm in upper rail plate 7 and 19 of gears, after top board 7 and gear 19 compressed, top board 7 just no longer moved downward; Because cylinder body 13 is in quick condition on piston rod 2; Thereby after top board 7 and gear 19 compressed, cylinder body 13 just under the effect of oil pressure, moved upward with respect to piston rod 2; Another position-limit mechanism 5 that is positioned at the clamping body below is formed the upper surface of structure at cylinder body 13 and flange 17; Thereby also upwards transport merit together, and promote the end portion generation distortion of clamping body 1, and drive lower guideway plate 8 is pressed on the gear 19.Because the spacing between upper rail plate 7 and lower guideway plate 8 and the gear 19 is 0.1mm, therefore, when clamping body 1 distortion, upper rail plate 7 is approximately the plane with the contact-making surface of lower guideway plate 8 and gear 19, and contact area is bigger, and clamping force is bigger, and is not fragile.
During clamping table, hydraulic oil is not through second pipe joint 12 and second oil circuit 22, from the lower end entering oil pocket 23 of piston 18; Piston 18 moves upward under the effect of hydraulic oil, because in clamping process, owing to transport merit relatively; The gap that causes on the piston rod 2 upper surface at the inner ladder place shaft shoulder of cylinder body 13 and piston 18 to produce 1.9mm, and the moving displacement that piston 18 makes progress is 2mm, therefore; Piston 18 can promote piston rods 2 0.1mm that moves upward, thereby the locking nut 3 that causes being installed in piston rod 2 upper ends is along with piston rod 2 0.1mm upwards, because the moving upward of piston rod 2; With no longer including the upper surface that pressure acts on clamping body 1, thereby the upper part of clamping body 1 is under the effect of strain; Revert to original state, revert to the 0.1mm gap between upper rail plate 7 and the gear 19.In like manner, cylinder body 13 also moves downward under the effect of oil pressure, and lower guideway plate 8 also breaks away from gear 19, and the end portion of clamping body 1 also under the effect of strain, reverts to original state.Like this, workbench is just no longer clamped, is in releasing orientation.
Those skilled in the art combine prior art and the foregoing description can realize said variant, and such variant does not influence the flesh and blood of the utility model, does not repeat them here.
More than the preferred embodiment of the utility model is described.It will be appreciated that the utility model is not limited to above-mentioned specific implementations, equipment of wherein not describing in detail to the greatest extent and structure are construed as with the common mode in this area to be implemented; Any those of ordinary skill in the art; Do not breaking away under the utility model technical scheme scope situation; All the method for above-mentioned announcement capable of using and technology contents are made many possible changes and modification to the utility model technical scheme; Or being revised as the equivalent embodiment of equivalent variations, this does not influence the flesh and blood of the utility model.Therefore, every content that does not break away from the utility model technical scheme, all still belongs in the scope of the utility model technical scheme protection any simple modification, equivalent variations and modification that above embodiment did according to the technical spirit of the utility model.
Claims (5)
1. a rotary table clamping device is characterized in that, comprising:
Clamping body, it has the U type breach of a horizontal direction opening, is respectively arranged with the upper rail plate and the lower guideway plate of opposing parallel on upper and lower two medial surfaces of said U type breach, and gear is between upper rail plate and lower guideway plate;
The upper and lower side of said clamping body is provided with a position-limit mechanism;
Oil cylinder, be positioned at said clamping body lower end position-limit mechanism under, said oil cylinder has the oil pocket of a lower ending opening; The said oil cylinder outside is equipped with first pipe joint and second pipe joint; Said first pipe joint connects first oil circuit, and said second pipe joint connects second oil circuit, and said first oil circuit and second oil circuit are connected the top and bottom of said oil pocket respectively; Be provided with piston in the said oil pocket; Said piston is isolated said first oil circuit and second oil circuit, and said piston has a bulge loop, and said bulge loop seals the lower ending opening of said oil pocket;
Said oil cylinder lower end is embedded with pressing plate, and said oil cylinder and said pressing plate in the vertical direction have the gap;
Piston rod vertically connects said clamping body, position-limit mechanism, oil cylinder and said pressing plate, and said piston rod is the axle of a band ladder;
The two ends of said piston rod are arranged with locking nut.
2. rotary table clamping device according to claim 1 is characterized in that, said position-limit mechanism comprises protruding briquetting and the recessed briquetting that sphere cooperates, and said protruding briquetting and recessed briquetting all are placed on the said piston rod.
3. rotary table clamping device according to claim 1 is characterized in that said oil cylinder comprises detachable cylinder body and oil cylinder cover, and said oil cylinder cover is positioned at said cylinder body below, is fixedly connected said cylinder body through screw.
4. rotary table clamping device according to claim 3 is characterized in that said first pipe joint is arranged on the outside of said cylinder body, and said second pipe joint is arranged on the outside of said oil cylinder cover.
5. rotary table clamping device according to claim 1 is characterized in that, also comprises flange, is arranged on said oil cylinder upper end, contacts with said clamping body lower end position-limit mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120539838XU CN202377794U (en) | 2011-12-21 | 2011-12-21 | Rotary working table clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120539838XU CN202377794U (en) | 2011-12-21 | 2011-12-21 | Rotary working table clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202377794U true CN202377794U (en) | 2012-08-15 |
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ID=46626312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120539838XU Expired - Fee Related CN202377794U (en) | 2011-12-21 | 2011-12-21 | Rotary working table clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202377794U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528471A (en) * | 2011-12-21 | 2012-07-04 | 上海三一精机有限公司 | Clamping device for rotary table, and clamping method thereof |
| CN104028826A (en) * | 2014-06-05 | 2014-09-10 | 张家港市明华机械制造有限公司 | Rotating pipe cutting machine |
-
2011
- 2011-12-21 CN CN201120539838XU patent/CN202377794U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528471A (en) * | 2011-12-21 | 2012-07-04 | 上海三一精机有限公司 | Clamping device for rotary table, and clamping method thereof |
| CN102528471B (en) * | 2011-12-21 | 2016-02-10 | 三一集团有限公司上海分公司 | Rotary table clamping device and clamping means thereof |
| CN104028826A (en) * | 2014-06-05 | 2014-09-10 | 张家港市明华机械制造有限公司 | Rotating pipe cutting machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150923 Address after: 201400, Shanghai, Fengxian District, 19 Lang Road, No. 3 Patentee after: SHANGHAI BRANCH OF SANY GROUP CO., LTD. Address before: 201306, No. two, 318 Avenue, Lingang Industrial Park, Shanghai, Fengxian District, A Patentee before: Seiki Co., Ltd. Shanghai Sany |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20171221 |