CN112171344A

CN112171344A - Hydraulic clamp capable of overturning

Info

Publication number: CN112171344A
Application number: CN202011212031.5A
Authority: CN
Inventors: 肖世涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-01-05

Abstract

The invention relates to a reversible hydraulic clamp, which aims to solve the problem that the processing is incomplete when different parts are processed due to the fact that the surfaces and holes needing to be processed inside and outside a hydraulic pump shell workpiece are large and the processing stress is large.

Description

Hydraulic clamp capable of overturning

Technical Field

The invention relates to the field of machining hydraulic fixtures, in particular to a reversible hydraulic fixture.

Background

The hydraulic clamp is a clamp which uses a hydraulic element to replace a mechanical part and realizes automatic positioning, supporting and clamping of a workpiece through hydraulic control. The clamping device has the advantages of large clamping force, reliable clamping, stable work, convenience in use and the like, and is widely applied to scenes such as numerical control machines, machining centers, automatic production lines and the like at present. The desired fixture is obtained by assembling the selected hydraulic components with the designed mechanical parts. The hydraulic clamp provides strong clamping and positioning force for various machining processes, can ensure accurate positioning and firm clamping of workpieces at specified positions, can reduce vibration and deformation in machining through floating support, and can also utilize the pressing and lifting of the automatic control pressing plate to leave the clamping position in machining. The hydraulic clamp can bear large cutting force during rough machining, can ensure accurate positioning during precise machining, and can also complete support, clamping and quick release which cannot be completed by a manual clamp.

The workpiece is a hydraulic pump shell, the inner part and the outer part of the workpiece have more surfaces and holes to be machined, the workpiece is mechanically machined, the positioning and clamping actions are realized by adopting a hydraulic device, the machining stress is higher on a special clamp, the workpiece can be turned over by adopting hydraulic control, and the workpiece is used for machining different parts, so that the arrangement of a device capable of rotating within a 360-degree range is necessary.

Disclosure of Invention

The invention provides a reversible hydraulic clamp, which aims to solve the problems that the inner part and the outer part of a pump shell workpiece in hydraulic pressure need more machined surfaces and holes and the machining stress is larger.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the invention provides a reversible hydraulic clamp device, which mainly comprises a rotary table mechanism, a hydraulic clamp main body mechanism and a workpiece, wherein the clamp is used for processing the workpiece at various angles after the workpiece is fixed on the clamp, the workpiece can be turned over by 360 degrees, and positioning and clamping are realized by adopting a hydraulic cylinder.

Furthermore, the workpiece is a hydraulic pump shell, the inner part and the outer part of the workpiece need to be processed more surfaces and holes, so that the processing stress is larger on a special clamp, the workpiece can be turned over by adopting hydraulic control and is used for processing different parts, the wall thickness of the workpiece is 10mm, the upper part of the workpiece is a cavity which is shaped like a cuboid, the bottom of the workpiece is in a circular arc shape, four holes are arranged on one side of the workpiece and are used for being connected with external equipment, two width surfaces are respectively provided with a section of equidistant plane boss which is used for positioning the plane of the workpiece by using a positioning device, the bottom of the workpiece is provided with 13 longitudinal rib plates, two circular grooves are arranged at symmetrical positions and are realized by the positioning device when the bottom is positioned, the depth and the shape of the corresponding cavity are different in the two separated cavities, the left side of the figure is provided with a cylindrical boss and a concave semicircular groove, the other side is a rectangular groove, and the other part of the space is provided with a cavity with a round groove and a cavity with a rectangular groove.

Further, the bottom plate of the turntable mechanism is arranged at the bottommost part and is in a cuboid block shape, corresponding mounting threaded holes are machined in the bottom plate, a first mounting cushion block is arranged at the left side position of the figure and mounted on the bottom plate through bolts, a turntable rotating device is mounted on the first mounting cushion block, a rotating action can be achieved after the connecting disc and a flange surface of the end face of the connecting disc are mounted through the bolts, a support block is mounted on the end face of the connecting disc through the bolts, an oil distribution rod is mounted in the middle of a turntable of the turntable rotating device, and the turntable can freely rotate and lubricate when rotating through oil feeding. The rear end of the core shaft is provided with a plurality of O-shaped ring grooves for mounting sealing rings, a transition plate is arranged between the first cushion block and the second cushion block, and a clamp body is arranged on the transition plate. The turntable rotating device starts to work after being electrified, the connecting disc connected with the turntable rotating device rotates, the first cushion block rotates simultaneously when the first cushion block is arranged on the connecting disc, the first cushion block and the second cushion block drive the connecting disc on the tailstock to rotate simultaneously when the first cushion block and the second cushion block are connected through the transition plate, and the connecting disc rotates around the mandrel. Therefore, the transition plate can rotate within 360 degrees, and the clamp main body device arranged on the transition plate can rotate within 360 degrees.

Furthermore, the hydraulic clamp main body mechanism, the bottom plate is a rectangular plate, each hydraulic positioning and clamping device is arranged on the bottom plate to position and clamp the workpiece, in the plan view shown in the figure, 4 positioning devices are arranged on the upper side, namely a positioning device G, a positioning device H, a positioning device A, a positioning device B, and 4 positioning devices are arranged on the lower side, namely a positioning device C, a positioning device D, a positioning device E and a positioning device F are respectively arranged from left to right, the front side and the rear side of the workpiece can be positioned through the arranged 8 positioning devices to prevent the workpiece from moving, a plane with a section of size is arranged at the bottom of the hydraulic clamp main body mechanism according to the appearance characteristics of the workpiece, 4 jacking devices are uniformly distributed at the middle position of the bottom plate, 3 clamping mechanisms are respectively arranged at equal intervals at the horizontal middle position of the bottom plate, namely the clamping mechanisms A and B, and after the clamping mechanism C is completely positioned on the side surface and the upper side of the workpiece, the clamping mechanism C simultaneously acts to simultaneously clamp the bottom rib plate of the workpiece.

Furthermore, the positioning mechanism is installed on the bottom plate through a base plate, one side of the base plate is provided with a hole for installing a hydraulic cylinder, and a hydraulic joint and a hydraulic hose are needed to be installed due to the fact that the hydraulic cylinder needs to be filled with oil, so that the bottom of the base plate is provided with a light hole which penetrates through the opening at the bottom of the hydraulic cylinder, the hydraulic hose can penetrate through the bottom of the bottom plate through a hole in the middle of the base plate and is connected to the hydraulic cylinder through a hydraulic clamping sleeve joint, the end part of a piston rod of the hydraulic cylinder is provided with an internal thread hole, the end part of a top block is provided with an external thread, the external thread at the end part of the top block is matched with the internal thread hole at the end part of a piston rod of the hydraulic cylinder to be screwed in installation, the top block is fixed, a limiting block is installed at the position under the, thereby the ejector pad is pushed to contact the working feed surface, and the extending stroke of the ejector pad can realize the function of controlling the stroke of the ejector pad through the limiting block. The jacking block is made of polyurethane and is serrated on the surface, so that friction can be increased when the surface of the jacking block is in contact with a workpiece, and the possibility of workpiece movement can be effectively reduced when the workpiece is machined. The clamping mechanisms are arranged at the positions 8 on the bottom plate, the structures are the same, and the actions are synchronous.

Furthermore, the base of the clamping mechanism is arranged on the bottom plate and is arranged on the horizontal central line of the bottom plate, and three parts are arranged at equal intervals and are all used for clamping the rib plate at the bottom of the workpiece. The base sets up a round hole towards the top, be used for preventing to install the pneumatic cylinder, a piston rod end portion installation push pedal of pneumatic cylinder, there are two holes in the left side of push pedal, use round pin axle one to install push pedal and two clamping jaws on the side of the dead ahead position of base, the lower extreme of controlling two clamping jaws is fixed a position on the side of the dead ahead position of base through round pin axle two, during initial state, the clamping jaw is for opening the state, the work piece is when putting, the opening space of clamping jaw is just in time put into to the gusset position that corresponds, can realize when the during operation, the pole chamber oil feed that has of pneumatic cylinder, certain stroke distance of its piston rod down, two round pin axle one positions of push pedal are on the lower side, make even a clamping jaw around two inward movements of round pin axle, zigzag and work piece contact through the clamping jaw terminal surface, the material is.

Furthermore, the hydraulic cylinder of the pressing device is arranged on the bottom plate and arranged at two sides, hydraulic oil enters the rodless cavity of the hydraulic cylinder to push the piston rod to move upwards, the hydraulic cylinder is in an initial state at the moment, after a workpiece is placed and the rod cavity of the hydraulic cylinder is formed, the piston rod of the hydraulic cylinder moves downwards, and the position of the partition plate on the upper surface of the workpiece is pressed through the pressing block.

In order to solve the technical problems, the technical scheme adopted by the invention further explains the working principle adopted by the invention, and the assembly steps of the reversible hydraulic clamp device provided by the invention are as follows:

the first step, place the work piece on this anchor clamps through the manual work, two circular recess of work piece bottom are put on positioner's kicking block, after every position has adjusted the position, positioner C, positioner D, positioner E move simultaneously, namely the piston rod of its pneumatic cylinder goes up to certain stroke distance, reach suitable processing position, stop the action, at this moment when beginning work, through the action of solenoid directional valve control pneumatic cylinder, the hydraulic cylinder does not have the pole chamber oil feed, its piston rod stretches out forward to promote the kicking block to contact the worker and advance the surface, its stroke that stretches out can realize the effect of controlling its stroke through the stopper. The clamping mechanisms are arranged at the positions 8 on the bottom plate, the structures are the same, and the actions are synchronous.

And secondly, after the bottom and the front and rear sides of the workpiece are positioned, the clamping mechanisms distributed below the longitudinal rib plates at the corresponding three positions at the bottom of the workpiece start to act, in an initial state, the clamping jaw is in an open state, when the workpiece is placed, the corresponding rib plate position is just placed in an open space of the clamping jaw, when the hydraulic cylinder works, oil is fed into a rod cavity of the hydraulic cylinder, a piston rod of the hydraulic cylinder descends for a certain stroke distance, one position of each pin shaft of the push plate is downward, so that the two clamping jaws move inwards around the pin shaft, the two clamping jaws are in contact with the rib plates of the workpiece and are clamped tightly through the saw-toothed shape of the end surfaces of the clamping jaws, the material is polyurethane, and the.

And thirdly, after the hydraulic oil enters the rod cavity, the piston rod of the hydraulic cylinder descends, and the upper surface of the workpiece and the upper surface of the partition plate of the workpiece are pressed tightly through the pressing block.

And fourthly, after the workpiece achieves positioning and clamping actions, the turntable rotating device is electrified to start working, the connecting disc connected with the turntable rotating device rotates, the first cushion block is arranged on the connecting disc and rotates at the same time, the first cushion block and the second cushion block are connected through the transition plate to drive the connecting disc on the tailstock to rotate at the same time, and the connecting disc rotates around the mandrel. Therefore, the transition plate can rotate within 360 degrees, and the clamp main body device arranged on the transition plate can rotate within 360 degrees. An appropriate angle range is set here, and the rotation is stopped after the rotation reaches a set angle.

The invention designs a reversible hydraulic clamp device, wherein a driving rotating device is arranged on one side of a rotating device, a driven rotating device is arranged on the other side of the rotating device, the two rotating devices are connected through a transition plate to realize integral rotation and driven, after a hydraulic clamp is used for fixing a workpiece on the hydraulic clamp, the hydraulic clamp can be processed at various angles, 360-degree turnover can be realized, the positioning and clamping actions of the workpiece are realized by adopting a hydraulic cylinder as the mechanical processing is required, the technical scheme can effectively simplify and simplify the mechanical structure, and the processing material is saved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of a reversible hydraulic clamping apparatus according to the present invention;

FIG. 2 is a schematic view of a turntable mechanism 1 of a reversible hydraulic clamping apparatus according to the present invention;

FIG. 3 is a schematic view of a hydraulic clamp body mechanism 2 of a reversible hydraulic clamp apparatus according to the present invention;

FIG. 4 is a schematic view of a positioning mechanism of a reversible hydraulic clamp apparatus according to the present invention;

FIG. 5 is a schematic view of a clamping mechanism of a reversible hydraulic clamp apparatus according to the present invention;

FIG. 6 is a schematic view of a pressing apparatus of the reversible hydraulic clamp apparatus of the present invention;

FIG. 7 is a schematic view of a workpiece structure of a reversible hydraulic clamping apparatus according to the present invention.

In the drawings:

1. a turntable mechanism; 2. a hydraulic clamp main body mechanism; 3. a workpiece; 4. a swivel joint; 5. an oil distributing rod; 6. a connecting disc; 7. the support blocks are respectively symmetrical left and right; 8. a first cushion block; 9. a bolt; 10. a base plate; 11. a second cushion block; 12. a support block; 13. a connecting disc; 14. a tailstock; 15. a mandrel; 16. a deep groove ball bearing; 17. a turntable sleeve; 18. a fixing plate; 19. a seal ring; 20. connecting blocks; 21. fixing the rod; 22. a turntable rotating device; 24. a positioning device A; 25. a pressure loading device A; 26. a positioning device B; 27. a positioning device C; 28. a positioning device D; 29. a positioning device E; 30. a positioning device F; 31. a clamping mechanism A; 32. a clamping mechanism B; 33. a clamping mechanism C; 34. a pressure loading device A; 35. a base plate; 36. a positioning device G; 37. a positioning device H; 38. a jacking device; 39. a substrate; 40. a top block; 41. a hydraulic cylinder; 42. a limiting block; 43. a base; 44. a first pin shaft; 45. a clamping jaw; 46. a second pin shaft; 47. pushing the plate; 48. a hydraulic cylinder; 49. an oil port; 51. briquetting; 52. pressing the arm; 53. a hydraulic cylinder; 54. an end face spacer; 55. longitudinal rib plates; 56. a bottom circular groove; 57. a side surface.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.

The invention discloses a reversible hydraulic fixture device, which mainly comprises a turntable mechanism 1, a hydraulic fixture main body mechanism 2 and a workpiece 3, wherein the fixture is used for processing the workpiece at various angles after the workpiece is fixed on the fixture, 360-degree turnover can be realized, and positioning and clamping are realized by adopting a hydraulic cylinder.

Referring to fig. 7, the workpiece 3 is a hydraulic pump housing, and has more internal and external surfaces and holes to be processed, so that the special fixture is subjected to a large processing force, and is hydraulically controlled to turn over the workpiece for processing different parts, the workpiece has a wall thickness of 10mm, the upper part is a cavity shaped like a cuboid, the bottom of the cavity is arc-shaped, four holes are arranged on one side of the cavity for connecting with external equipment, two width surfaces are respectively provided with a section of equidistant planar boss for positioning the plane by using a positioning device, the bottom of the cavity is provided with 13 longitudinal rib plates, and two symmetrical positions of the longitudinal rib plates are provided with two circular grooves, the positioning at the bottom is realized by the positioning device 50, the depth and the shape of the corresponding cavity are different in the two separated cavities, and the left side of the figure is provided with a cylindrical boss, the semicircular groove is concave, the other side of the semicircular groove is a rectangular groove, and the other part of the semicircular groove are provided with a cavity of the circular groove and a cavity of the rectangular groove.

Referring to fig. 2, in the turntable mechanism 1, a bottom plate 10 is arranged at the bottommost part, and is shaped like a rectangular parallelepiped block, corresponding mounting threaded holes are formed in the bottom plate, a first mounting pad 8 is arranged at the left side position as shown in the figure, the first mounting pad is mounted on the bottom plate 10 through bolts 8, a turntable rotating device 22 is mounted on the first mounting pad 8, so that the rotating action can be realized after the connecting disc 6 and a flange surface of the end surface of the connecting disc are mounted through the bolts, a support block 7 is mounted on the end surface of the connecting disc 6 through the bolts, an oil distribution rod is mounted at the middle position of a turntable of the turntable rotating device 22, and the rotating and lubricating actions can be realized freely when the turntable rotates through oil feeding. The second cushion block 11 is arranged at the right side position of the bottom plate 10 at the same height as the first cushion block 8 and fixed on the bottom plate 10 through bolts, the bottom of the tailstock 14 is rectangular, the upper portion of the tailstock 14 is cylindrical, a through hole is formed in the middle of the tailstock 14 and used for installing the mandrel 15, the front end of the mandrel 15 extends out, the connecting disc 13 is installed on the connecting disc 13 through bolts, the support block 12 is installed on the side face of the connecting disc 13, a fixing plate 18 is fixedly installed on the right side face of the tailstock 14, the outer wall of the rotary table sleeve 17 is installed with the fixing plate 18 through threaded holes, deep groove ball bearings 16 are installed in the front of and at the back of the rear end portion of the mandrel 15, a plurality of O-shaped ring grooves are machined in the back end of the mandrel 15 and used for installing sealing rings, a transition plate 23 is. The turntable rotating device 22 starts to work when being electrified, the connecting disc 6 connected with the turntable rotating device rotates, the first cushion block 8 rotates simultaneously when the first cushion block 8 is arranged on the connecting disc 6, the first cushion block 8 and the second cushion block 11 simultaneously drive the connecting disc 13 on the tailstock to rotate through the connection of the transition plate 23, and the connecting disc 13 rotates around the mandrel 15. Therefore, the transition plate 23 can rotate within 360 degrees, and accordingly, the clamp main body device mounted on the transition plate 23 can rotate within 360 degrees.

Referring to fig. 3, in the main body mechanism 2 of the hydraulic clamp, the bottom plate 35 is a rectangular plate, on which each hydraulic positioning and clamping device is arranged to position and clamp the workpiece 3, in the top view as shown in the figure, 4 positioning devices are arranged on the upper side, respectively positioning device G36, positioning device H37, positioning device a24, positioning device B26, and 4 positioning devices are arranged on the lower side, respectively positioning device C27, positioning device D28, positioning device E29, and positioning device F30, through which the 8 positioning devices arranged can position the front and rear sides of the workpiece to prevent the workpiece from moving, according to the appearance characteristics of the workpiece, the bottom thereof has a plane with a section of size, under which 4 jacking devices 38 are uniformly distributed at the middle position of the bottom plate 35 can be arranged, 3 clamping mechanisms are respectively arranged at equal intervals at the horizontal middle position of the bottom plate 35, respectively clamping mechanisms a31, after the clamping mechanism B32 and the clamping mechanism C33 are positioned completely on the side face and the upper side of the workpiece, the clamping mechanisms operate simultaneously to clamp the bottom rib plate of the workpiece simultaneously.

Referring to fig. 4, the positioning mechanism is formed by mounting a base plate 39 on a bottom plate 35, wherein one side of the base plate 39 is provided with a hole for mounting a hydraulic cylinder 41, and because the hydraulic cylinder 41 needs to be filled with oil, a hydraulic joint and a hydraulic hose need to be mounted, so that the bottom of the base plate 39 is provided with a unthreaded hole which is opened from the bottom of the hydraulic cylinder to penetrate through the unthreaded hole, the hydraulic hose can penetrate through the bottom of the bottom plate 35 through a hole in the middle of the base plate 39 and is connected to the hydraulic cylinder 41 through a hydraulic bushing joint, the end of a piston rod of the hydraulic cylinder 41 is provided with an internal threaded hole, the end of a top block 40 is provided with an external thread, the external thread at the end of the top block 40 is matched and screwed with the internal threaded hole at the end of the piston rod of the hydraulic cylinder 41 to be mounted, so that the top block 40 is fixed, a, the rodless cavity of the hydraulic cylinder 41 is filled with oil, the piston rod of the hydraulic cylinder extends forwards, so that the ejector block 40 is pushed to contact the working feeding surface, and the extending stroke of the ejector block can realize the function of controlling the stroke of the ejector block through the limiting block 42. The top block 40 is made of polyurethane and is sawtooth-shaped on the surface, so that friction can be increased when the surface of the top block is contacted with a workpiece, and the possibility of workpiece movement can be effectively reduced when the workpiece is processed. The clamping mechanism is arranged at the position 8 on the bottom plate 35, has the same structure and acts synchronously.

Referring to fig. 5, in the clamping mechanism, the base 43 is installed on the bottom plate 35 and is arranged on the horizontal center line of the bottom plate 35 at three positions at equal intervals, which are all used for clamping the rib plate at the bottom of the workpiece. The base 43 is provided with a round hole upwards for preventing installation of a hydraulic cylinder 48, the end part of a piston rod of the hydraulic cylinder is provided with a push plate 47, the left side of the push plate is provided with two holes, the push plate 47 and two clamping jaws 45 are installed on the side surface of the position right in front of the base 43 by using a first pin shaft, the lower ends of the left clamping jaw and the right clamping jaw are positioned on the side surface of the position right in front of the base 43 by using a second pin shaft 46, in the initial state, the clamping jaws are in an open state, when a workpiece, the corresponding rib plate is just placed into the opening space of the clamping jaw, so that oil can be fed into the rod cavity of the hydraulic cylinder when the hydraulic cylinder works, the piston rod moves downwards for a certain travel distance, the first two pin shafts 44 of the push plate 47 are deviated downwards, so that the clamping jaws 45 move inwards around the second pin shaft, the sawtooth-shaped clamping jaw 45 is in contact with the workpiece and made of polyurethane, so that the workpiece cannot be scratched or collided when being clamped.

Referring to fig. 6, in the pressing device, hydraulic cylinders 53 are installed on the bottom plate 35 and arranged at two sides, hydraulic oil enters the rodless cavities of the hydraulic cylinders to push the piston rods to move upwards, which is an initial state at this time, after a workpiece is placed and the rod cavities of the hydraulic cylinders, the piston rods of the hydraulic cylinders move downwards, and the pressing blocks 51 are used for pressing the partition plates on the upper surface of the workpiece.

The invention relates to an assembly method based on a reversible hydraulic clamp, which comprises the following steps:

firstly, a workpiece 3 is manually placed on the fixture, two circular grooves at the bottom of the workpiece are placed on a top block of a positioning device 50, after the position of each position is adjusted, the positioning device C27, the positioning device D28 and the positioning device E29 act simultaneously, namely, a piston rod of a hydraulic cylinder of the fixture moves upwards to a certain stroke distance to reach a proper processing position and stop moving, at the moment, when the fixture starts to work, the action of the hydraulic cylinder is controlled through an electromagnetic reversing valve, oil is fed into a rodless cavity of the hydraulic cylinder 41, the piston rod of the hydraulic cylinder extends forwards, so that the top block 40 is pushed to contact with the surface of a workpiece, and the extending stroke of the top block can realize the function of controlling the stroke of the top. The clamping mechanism is arranged at the position 8 on the bottom plate 35, has the same structure and acts synchronously.

And secondly, after the bottom and the front and rear sides of the workpiece are positioned, the clamping mechanisms distributed below the longitudinal rib plates at the corresponding three positions at the bottom of the workpiece 3 start to act, in an initial state, the clamping jaws are in an open state, when the workpiece is placed, the corresponding rib plates are just placed in the open spaces of the clamping jaws, so that when the workpiece is in work, oil is fed into rod cavities of the hydraulic cylinders, piston rods of the hydraulic cylinders go down for a certain stroke distance, the first 44 positions of the two pins of the push plate 47 are downward, the two clamping jaws 45 move inwards around the second pin, the toothed parts on the end surfaces of the clamping jaws 45 are in contact with the rib plates of the workpiece and are clamped, the clamping jaws are made of polyurethane, and the workpiece cannot be scratched or.

Thirdly, after the hydraulic oil enters the rod cavity, the piston rod of the hydraulic cylinder descends, and the upper surface of the workpiece and the upper surface of the partition plate of the workpiece are compressed through the pressing block 51.

Fourthly, after the workpiece achieves positioning and clamping actions, the turntable rotating device 22 is electrified to start working, the connecting disc 6 connected with the turntable rotating device rotates, the first cushion block 8 rotates simultaneously when the first cushion block 8 is installed on the connecting disc 6, the first cushion block 8 and the second cushion block 11 are connected through the transition plate 23, the connecting disc 13 on the tailstock is driven to rotate simultaneously, and the connecting disc 13 rotates around the mandrel 15. Therefore, the transition plate 23 can rotate within 360 degrees, and accordingly, the clamp main body device mounted on the transition plate 23 can rotate within 360 degrees. An appropriate angle range is set here, and the rotation is stopped after the rotation reaches a set angle.

Although the illustrative embodiments of the present invention have been described above to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is apparent to those skilled in the art that all the inventive concepts using the present invention are protected as long as they can be changed within the spirit and scope of the present invention as defined and defined by the appended claims.

Claims

1. The utility model provides a hydraulic jig device can overturn which characterized in that: the main components comprise a rotary table mechanism (1), a hydraulic clamp main body mechanism (2) and a workpiece (3), after the workpiece is fixed on the fixture, the fixture can be machined at various angles, 360-degree overturning is realized, and positioning and clamping are realized by adopting a hydraulic cylinder.

2. A turnable hydraulic clamp device as claimed in claim 1, characterized in that the workpiece (3) is a hydraulic pump housing with more internal and external surfaces and holes to be machined, so that the special clamp is subjected to a greater machining force, and is turned over by hydraulic control for machining different parts, the workpiece has a wall thickness of 10mm, the upper part is a cavity shaped like a rectangular parallelepiped, the bottom part is arc-shaped, four holes are arranged on one side for connection with external equipment, two width surfaces are each provided with a section of planar boss at equal intervals for positioning the plane thereof by a positioning device, the bottom part is provided with 13 longitudinal ribs, and two symmetrical positions are provided with two circular grooves, the positioning at the bottom part is realized by a positioning device (50), and the corresponding cavity depth and shape are different in the two separated cavities, the left side of the figure is provided with a cylindrical boss, a semicircular groove is concave, the other side of the figure is provided with a rectangular groove, and the other part of the figure which is separated from the semicircular groove is provided with a cavity of the circular groove and a cavity of the rectangular groove.

3. A reversible hydraulic chuck device as claimed in claim 1, wherein said turntable mechanism (1), the bottom plate (10) is arranged at the bottom and is shaped as a rectangular parallelepiped block, and is provided with corresponding mounting screw holes, a first mounting block (8) is arranged at the left side position as shown in the figure, and is mounted on the bottom plate (10) through bolts 8, a turntable rotating device (22) is mounted on the first mounting block (8), so that the rotation action can be realized after the quick plate (6) and the flange surface of the end surface are mounted through bolts, the end surface of the connecting plate (6) is provided with a support block (7) through bolts, an oil distributing rod is mounted at the middle position of the turntable rotating device (22), and the rotation and lubrication can be realized during the rotation of the turntable through oil feeding. A second cushion block (11) is arranged at the right side position of the bottom plate (10) at the same height as the first cushion block (8) and is fixed on the bottom plate through bolts, the bottom of the tailstock (14) is rectangular, the upper part of the tailstock (14) is cylindrical, a through hole is processed at the middle position of the tailstock (14) and is used for installing a mandrel (15), the front end of the mandrel (15) extends out, the connecting disc (13) is installed on the connecting disc through bolts, a support block (12) is installed on the side surface of the connecting disc (13), a fixing plate (18) is fixedly installed on the right side surface of the tailstock (14), the outer wall of the rotary table sleeve (17) is installed through threaded holes and the fixing plate (18), deep groove ball bearings (16) are installed on the front and back of the rear end part of the mandrel (15), a plurality of O-shaped ring grooves are processed at the rear end of the mandrel (15) and are used for installing sealing rings, a, the jig main body is mounted on a transition plate (23). The turntable rotating device (22) is electrified to start working, the connection disc (6) connected with the turntable rotating device is rotated, the first cushion block (8) is arranged on the connection disc (6) and is rotated at the same time, the first cushion block (8) and the second cushion block (11) are connected through the transition plate (23) to drive the connection disc (13) on the tailstock to rotate at the same time, and the connection disc (13) rotates around the mandrel (15). Therefore, the transition plate (23) can rotate within 360 degrees, and accordingly, the clamp main body device arranged on the transition plate (23) can rotate within 360 degrees.

4. A reversible hydraulic clamping device as claimed in claim 1, characterized in that said hydraulic clamping device body means (2), said base plate (35) is a rectangular plate on which the respective hydraulic positioning and clamping devices are arranged for positioning and clamping the workpiece (3), and in the top view as shown in the figure, 4 positioning devices are arranged on the upper side, respectively positioning device G (36), positioning device H (37), positioning device A (24), positioning device B (26), and 4 positioning devices are arranged on the lower side, respectively positioning device C (27), positioning device D (28), positioning device E (29), and positioning device F (30), and by means of this arrangement 8 positioning devices, the front and rear sides of the workpiece can be positioned to prevent the workpiece from shifting, and according to the contour of the workpiece having a dimension at the bottom thereof, 4 jacking devices (38) are arranged uniformly at the middle position of the base plate (35), 3 clamping mechanisms, namely a clamping mechanism A (31), a clamping mechanism B (32) and a clamping mechanism C (33), are respectively arranged and installed at the horizontal middle position of the bottom plate (35) at equal intervals, and after the side surface and the upper side of the workpiece are completely positioned, the clamping mechanisms simultaneously act to simultaneously clamp the bottom rib plate of the workpiece.

5. A reversible hydraulic clamping device as claimed in claim 4, wherein said positioning mechanism is installed on the base plate (35) by a base plate (39), one side of the base plate (39) is opened for installing the hydraulic cylinder (41), and the hydraulic cylinder (41) needs to be filled with oil, and hydraulic joints and hydraulic hoses need to be installed, so that the design of this time is that the bottom of the base plate (39) is provided with a light hole which is opened from the bottom of the hydraulic cylinder to penetrate through the bottom of the hydraulic cylinder, so that the hydraulic hoses can pass through the bottom of the base plate (35) through the hole in the middle of the base plate (39) and be connected to the hydraulic cylinder (41) through the hydraulic clamping sleeve joint, the end of the piston rod of the hydraulic cylinder (41) is provided with an internal threaded hole, the end of the top block (40) is provided with an external thread, and the external thread on the end of the top block (40) is matched, the fixing of the top block (40) is realized, the limiting block (42) is arranged at a position right below the top block (40), when the hydraulic cylinder starts to work, the action of the hydraulic cylinder is controlled through the electromagnetic directional valve, oil is fed into a rodless cavity of the hydraulic cylinder (41), a piston rod of the hydraulic cylinder extends forwards, so that the top block (40) is pushed to contact with a working feed surface, and the extending stroke of the top block can realize the function of controlling the stroke of the top block through the limiting block (42). The jacking block (40) is made of polyurethane, the surface of the jacking block is serrated, friction can be increased when the surface of the jacking block is in contact with a workpiece, the possibility of workpiece movement can be effectively reduced when the workpiece is machined, the clamping mechanisms are arranged on the bottom plate (35) in all, the structure is the same, and the actions are synchronous.

6. A reversible hydraulic chuck device according to claim 5, characterized in that the clamping mechanism, the base 43 is mounted on the bottom plate (35) and arranged on the horizontal center line of the bottom plate (35) at three positions with equal distance, all of which are the positions for clamping the rib plate at the bottom of the workpiece. The base (43) is provided with a round hole upwards for preventing installation of a hydraulic cylinder (48), the end part of a piston rod of the hydraulic cylinder is provided with a push plate (47), the left side of the push plate is provided with two holes, the push plate (47) and two clamping jaws (45) are installed on the side surface of the position right in front of the base (43) by using a first pin shaft, the lower ends of the left clamping jaw and the right clamping jaw are positioned on the side surface of the position right in front of the base (43) by using a second pin shaft (46), in an initial state, the clamping jaws are in an opening state, when a workpiece is placed, the corresponding rib plate is just placed in the opening space of the clamping jaws, when the hydraulic cylinder works, oil is fed into a rod cavity of the hydraulic cylinder, the piston rod of the hydraulic cylinder moves downwards for a certain travel distance, the positions of the first pin shafts (44) of the push plate (47) are deviated, so that the, the material is polyurethane, can not cause the fish tail to collide with to the work piece when pressing from both sides tight work piece, the top pressure equipment is installed on bottom plate (35), arranges in both sides position, and hydraulic oil gets into the rodless chamber of pneumatic cylinder, promotes the piston rod and goes upward, is initial state this moment, and after the work piece was put, the pneumatic cylinder had the pole chamber after, the pneumatic cylinder piston rod was down, gets baffle department through briquetting (51) to the work piece upper surface and compresses tightly.