CN109968226B - Hydraulic clamping vice - Google Patents
Hydraulic clamping vice Download PDFInfo
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- CN109968226B CN109968226B CN201910397302.XA CN201910397302A CN109968226B CN 109968226 B CN109968226 B CN 109968226B CN 201910397302 A CN201910397302 A CN 201910397302A CN 109968226 B CN109968226 B CN 109968226B
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- 239000003921 oil Substances 0.000 claims abstract description 178
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 210000000080 chela (arthropods) Anatomy 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B1/00—Vices
- B25B1/02—Vices with sliding jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B1/00—Vices
- B25B1/06—Arrangements for positively actuating jaws
- B25B1/18—Arrangements for positively actuating jaws motor driven, e.g. with fluid drive, with or without provision for manual actuation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic clamping vice, which comprises a base, a fixed vice body and a movable vice body, wherein the fixed vice body and the movable vice body are arranged on the base, a hydraulic thimble mechanism and a hydraulic driving system are respectively arranged on the fixed vice body and the movable vice body, the hydraulic thimble mechanism comprises a plurality of hydraulic cylinders respectively arranged on the fixed vice body and the movable vice body and a plurality of thimbles arranged in the hydraulic cylinders, a piston divides the hydraulic cylinders into independent working cavities and restoration cavities, working oil ways and restoration oil ways are respectively arranged on the fixed vice body and the movable vice body, the working oil ways are respectively communicated with the working cavities of the hydraulic cylinders, the restoration oil ways are respectively communicated with the restoration cavities of the hydraulic cylinders, and the hydraulic driving system respectively provides hydraulic oil for the working cavities or the restoration cavities through the working oil ways and the restoration oil ways to drive ejection and retraction actions of the thimbles in the hydraulic cylinders. The device forms point contact with the end surfaces of the workpieces through a plurality of ejector pins in the hydraulic ejector pin mechanism, and can be suitable for fixing and clamping operations on various complex workpieces.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a hydraulic clamping vice.
Background
The vice clamping is widely applied in machining, but when a workblank (such as a forge piece) with uneven edges is clamped by a common vice, stable clamping is difficult, an operator is required to pad copper sheets (or aluminum sheets) on the concave part, and the thickness of the pad is fully based on the experience of the operator, so that the clamping operation becomes complicated, enough clamping force cannot be ensured, the production efficiency is low, and certain potential safety hazards exist.
The Chinese patent application CN103111889A discloses a multi-point flexible clamp, the clamping part of which mainly comprises two clamping boxes, each clamping box comprises a box body, the front end face of each box body is opened, the rear end face of each box body is provided with a vent hole, and a plurality of rows of clamp sheets are arranged in the box body and extend out from the front end face of each box body. Through setting up a plurality of anchor clamps pieces, let in high-pressure gas and provide outside thrust for anchor clamps piece to the box, realize the multiple spot fixed clamping to complicated part. The multi-point clamping operation on complex workpieces and blanks is realized, but the multi-point clamping operation adopts an air pressure mode to provide acting force for a plurality of layers of clamp sheets, and high requirements are provided for sealing fit between the clamp sheets and the box body.
Disclosure of Invention
The invention aims to solve the technical problems of the existing clamp and vice during clamping of complex workpieces and provides a hydraulic clamping vice.
In order to solve the technical problems, the invention adopts the following technical scheme:
The utility model provides a hydraulic clamping vice, includes the base, and set up the fixed pincers body and the movable pincers body on the base, all be provided with hydraulic thimble mechanism and hydraulic drive system on the fixed pincers body and the movable pincers body, hydraulic thimble mechanism is including setting up a plurality of pneumatic cylinders and the a plurality of thimble of setting in each pneumatic cylinder on the fixed pincers body and the movable pincers body respectively, thimble one end can follow the terminal surface of fixed pincers body or the movable pincers body and stretch out, and the one end tip that the thimble is located the pneumatic cylinder is provided with the piston with pneumatic cylinder complex, and the piston separates the pneumatic cylinder into independent working chamber and restoring chamber, be provided with working oil circuit and restoring oil circuit on the fixed pincers body and the movable pincers body respectively, the working oil circuit communicates with the working chamber of each pneumatic cylinder respectively, restoring oil circuit communicates with the restoring chamber of each pneumatic cylinder respectively, hydraulic drive system provides hydraulic oil for working chamber or restoring chamber through working oil circuit respectively, drives the ejecting and the withdrawal action in the pneumatic cylinder.
In the above technical scheme, further, the pneumatic cylinders on the fixed clamp body and the movable clamp body are all distributed in a matrix structure, the pneumatic cylinders on the same horizontal plane are arranged at intervals side by side, and the pneumatic cylinders on different horizontal planes are connected with the restoring oil circuit through the working oil circuit arranged on the horizontal plane.
In the above technical scheme, further, the hydraulic driving system comprises a reversing valve assembly, a combined one-way valve assembly, a plunger pump assembly and a hydraulic oil tank which are sequentially arranged;
the reversing valve assembly comprises a valve body, a valve cavity arranged in the valve body and a valve core assembly arranged in the valve cavity, wherein the valve body is arranged on one side of a fixed clamp body or a movable clamp body, one side of the valve body is provided with a connecting oil way I which is respectively communicated with a working oil way and a restoring oil way, the other end of the connecting oil way I is communicated to the valve cavity, the valve core assembly comprises a valve rod and two valve cores arranged on the valve rod at intervals, and spiral grooves are formed in the surfaces of the valve cores;
The combined check valve assembly is arranged on one side of the valve body, a first check valve, a second check valve, a third check valve and a fourth check valve are sequentially arranged on the combined check valve assembly in parallel, four connecting oil ways II are arranged on one side, connected with the combined check valve assembly, of the valve body, the first check valve, the second check valve, the third check valve and the fourth check valve are respectively communicated with the valve cavity through the four connecting oil ways II, when the valve core assembly is positioned at the bottom of the valve cavity, two valve cores are respectively positioned at the connecting oil ways II between the second check valve and the valve cavity, the first check valve is communicated with a working oil way, the third check valve is communicated with a restoring oil way, when the valve core assembly is positioned at the top of the valve cavity, the two valve cores are respectively positioned at the connecting oil ways II between the first check valve and the third check valve and the valve cavity, the second check valve is communicated with the working oil way through a spiral groove on one valve core, and the fourth check valve is communicated with the restoring oil way through a spiral groove on the other valve core;
The plunger pump assembly is arranged on one side of the combined one-way valve assembly, the plunger pump assembly comprises a pump body, a pump chamber arranged on the pump body, a plunger arranged in the pump chamber and a plunger rod, a first oil inlet oil way, a second oil inlet oil way and an oil return oil way which are communicated with the pump chamber are respectively arranged on the pump body, one end of the first oil inlet oil way is connected with a first one-way valve, one end of the second oil inlet oil way is connected with a fourth one-way valve, the oil return oil way is respectively connected with a second one-way valve and a third one-way valve, the other ends of the first oil inlet oil way, the second oil inlet oil way and the oil return oil way are respectively connected to a hydraulic oil tank, a fifth one-way valve is arranged between the first oil inlet oil way, the second oil inlet oil way and the hydraulic oil tank, and a sixth one-way valve is arranged between the oil return oil way and the hydraulic oil tank.
In the above technical scheme, further, the fifth check valve and the sixth check valve are respectively arranged on a check valve assembly, the fifth check valve and the sixth check valve are horizontally arranged on the check valve assembly in parallel, the check valve assembly is arranged on one side of the pump body, the first oil inlet oil way and the second oil inlet oil way are respectively and directly communicated with one end of the fifth check valve on the check valve assembly, the other end of the fifth check valve is connected to the hydraulic oil tank through the first oil pipe, the oil return oil way is connected to one end of the sixth check valve through the second oil pipe, and the other end of the sixth check valve is connected to the first oil pipe and the hydraulic oil tank.
In the above technical scheme, further, be provided with the positioning mechanism that is used for fixed location to the movable clamp body on the base, positioning mechanism is including setting up the locating piece on the base and setting up the screw rod on the locating piece, through threaded connection between screw rod and the locating piece, set up spacing spout on the base, movable clamp body and locating piece bottom all are provided with spacing spout complex spacing slide rail, pass through spacing spout and spacing slide rail swing joint between movable clamp body and locating piece and the base, set up the fixed establishment who is used for fixing the locating piece on the base between locating piece and the base.
In the above technical scheme, further, fixed establishment includes that the interval sets up a plurality of hemisphere constant head tanks and the fixed subassembly of setting in the locating piece bottom on the base, be provided with spacing hole on the locating piece and with the fixed orifices of spacing hole intercommunication, fixed subassembly is including setting up spacing ball and ejector pin in spacing hole, and set up the regulation pole in the fixed orifices, be provided with reset spring between ejector pin and the spacing ball, through threaded connection between regulation pole part and the fixed orifices, adjust the other part of pole and be the toper cross-section structure, ejector pin one end stretches into in the fixed orifices, the ejector pin stretches into the one end of fixed orifices and adjusts the pole on toper cross-section structure part match.
The invention has the beneficial effects that:
1) The device is provided with the hydraulic thimble mechanism to clamp the workpiece, and point contacts are respectively formed between a plurality of thimbles in the hydraulic thimble mechanism and the clamping end surfaces of the workpiece during clamping operation, so that the device is applicable to the fixed clamping operation of various complex workpieces.
2) Each thimble is driven through hydraulic pressure, designs hydraulic drive system and hydraulic pressure thimble mechanism in the device, has guaranteed that the clamping force of each thimble when pressing from both sides tightly is even, presss from both sides tight operation reliable and stable.
3) The hydraulic driving system has the advantages that all the hydraulic control elements are modularly designed and integrated, so that the whole hydraulic driving system is simple in structure, and the hydraulic driving system is compact and reliable to install on a vice.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a schematic view of the structure of the invention shown in fig. 1.
FIG. 3 is a schematic view of a portion of the hydraulic drive system of FIG. 2 at I in accordance with the present invention.
Fig. 4 is a hydraulic schematic diagram of a hydraulic drive system according to the present invention.
Fig. 5 is a schematic view of the cross section B-B in fig. 1.
In the figure: 1. base, 2, fixed clamp body, 3, movable clamp body, 4, hydraulic cylinder, 401, working chamber, 402, restoring chamber, 5, thimble, 6, piston, 7, working oil path, 8, restoring oil path, 9, reversing valve assembly, 901, valve body, 902, valve cavity, 903, valve rod, 904, valve core, 905, spiral groove, 906, connecting oil path i, 907, connecting oil path ii, 10, combined check valve assembly, 1001, first check valve, 1002, second check valve, 1003, third check valve, 1004, fourth check valve, 11, plunger pump assembly, 1101, pump body, 1102, pump chamber, 1103, plunger, 1104, plunger rod, 1106, first oil inlet path, 1107, second oil inlet path, 1108, oil return path, 12, check valve assembly, 1201, fifth check valve, 1202, sixth check valve, 13, hydraulic oil tank, 14, first oil pipe, 15, second oil pipe, 16, positioning block, 17, screw, 18, limit chute, 19, limit slide rail, 20, positioning groove, 21, limit hole, 22, fixed hole, 23, adjusting rod, 25, limit ball, 25, adjusting rod, restoring ball.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
As shown in fig. 1 and 2, the hydraulic clamping vice in this embodiment includes a base 1, and a fixed jaw 2 and a movable jaw 3 disposed on the base, the movable jaw 3 is movably connected with the base 1, hydraulic thimble mechanisms and hydraulic driving systems are disposed on the fixed jaw 2 and the movable jaw 3, the hydraulic thimble mechanisms include a plurality of hydraulic cylinders 4 disposed on the fixed jaw 2 and the movable jaw 3, and a plurality of thimbles 5 disposed in each hydraulic cylinder 4, one end of each thimble 5 may extend from an end surface of the fixed jaw or the movable jaw, one end of each thimble 5 disposed in each hydraulic cylinder is provided with a piston 6 matched with the hydraulic cylinder, the piston 6 divides the hydraulic cylinder 4 into an independent working cavity 401 and a restoring cavity 402, the fixed jaw 2 and the movable jaw 3 are respectively provided with a working oil path 7 and a restoring oil path 8, the working oil path 7 is respectively communicated with the working cavity 401 of each hydraulic cylinder, the restoring oil path 8 is respectively communicated with the restoring cavity 402 of each hydraulic cylinder, and the hydraulic driving system is respectively providing hydraulic oil for the restoration cavity and the restoring cavity through the working oil path and the restoring driving system. When hydraulic oil is injected into each working cavity through a working oil way by the hydraulic driving system, the hydraulic oil in the working cavity drives the piston to push the thimble out of the hydraulic cylinder, so that the clamping operation of the thimble on a workpiece is realized; when the hydraulic drive system injects hydraulic oil into the restoring oil way and into each restoring cavity, the hydraulic oil in the restoring cavity drives the piston to push the thimble to retract into the hydraulic cylinder, and the thimble loosens the workpiece.
The hydraulic cylinders on the fixed clamp body 2 and the movable clamp body 3 are distributed in a matrix structure, the hydraulic cylinders 4 on the same horizontal plane are arranged at intervals side by side, and the hydraulic cylinders 4 on different horizontal planes are connected with the restoring oil circuit 8 through the working oil circuit 7 arranged on the horizontal plane. In this embodiment, the hydraulic thimble mechanisms on the fixed pincer body and the movable pincer body are arranged in a layered manner, and a working oil path and a restoring oil path can be respectively arranged in a plane where each layer of hydraulic cylinders of the hydraulic thimble mechanisms are located, and hydraulic oil is provided for the hydraulic cylinders of each different layer through different working oil paths and restoring oil paths of each layer to realize driving of each thimble.
As shown in fig. 2 and 3, the hydraulic drive system in this embodiment includes a reversing valve assembly 9, a combination check valve assembly 10, a plunger pump assembly 11, a check valve assembly 12, and a hydraulic tank 13, which are disposed in this order.
The reversing valve assembly 9 comprises a valve body 901, a valve cavity 902 arranged in the valve body and a valve core assembly arranged in the valve cavity, wherein the valve body 901 is arranged on one side of a fixed clamp body or a movable clamp body, a connecting oil way I906 communicated with a working oil way and a restoring oil way respectively is arranged on one side of the valve body 901, the other end of the connecting oil way I906 is communicated with the valve cavity 902, the valve core assembly comprises a valve rod 903 and two valve cores 904 arranged on the valve rod at intervals, and spiral grooves 905 are formed in the surface of each valve core 904.
The combined check valve assembly 10 is arranged on one side of the valve body 901, a first check valve 1001, a second check valve 1002, a third check valve 1003 and a fourth check valve 1004 are sequentially arranged on the combined check valve assembly 10 in parallel, four connecting oil passages II 907 are arranged on one side, connected with the combined check valve assembly, of the valve body 901, and the first check valve 1001, the second check valve 1002, the third check valve 1003 and the fourth check valve 1004 are respectively communicated with the valve cavity 902 through the four connecting oil passages II 907.
When the valve core assembly is positioned at the bottom of the valve cavity, the two valve cores 904 are respectively positioned at a connecting oil way II between the second one-way valve and the valve cavity, the first one-way valve 1001 is communicated with the working oil way 7, and the third one-way valve 1003 is communicated with the restoration oil way 8; when the valve core assembly is positioned at the top of the valve cavity, the two valve cores 904 are respectively positioned at the connecting oil way II between the first check valve and the valve cavity, the second check valve 1002 is communicated with the working oil way 7 through a spiral groove on one valve core, and the fourth check valve 1004 is communicated with the restoring oil way 8 through a spiral groove on the other valve core. The valve rod on the valve core assembly is connected with a reversing valve handle, and the switching operation of the oil way is realized by controlling the up-and-down movement of the valve core.
The plunger pump assembly 11 is arranged on one side of the combined one-way valve assembly 10, the plunger pump assembly 11 comprises a pump body 1101, a pump chamber 1102 arranged on the pump body, a plunger 1103 and a plunger rod 1104 arranged in the pump chamber, a first oil inlet path 1106, a second oil inlet path 1107 and an oil return path 1108 which are communicated with the pump chamber are respectively arranged on the pump body 1101, one end of the first oil inlet path 1106 is connected with the first one-way valve 1001, one end of the second oil inlet path 1107 is connected with the fourth one-way valve 1004, the oil return path 1108 is respectively connected with the second one-way valve 1002 and the third one-way valve 1003, the other ends of the first oil inlet path 1106, the second oil inlet path 1107 and the oil return path 1108 are respectively connected to the hydraulic oil tank 13, a fifth one-way valve 1201 is arranged between the first oil inlet path 1106, the second oil inlet path 1107 and the hydraulic oil tank 13, and a sixth one-way valve 1202 is arranged between the oil return path 1108 and the hydraulic oil tank 13. The plunger pump assembly is used for pumping hydraulic oil in the hydraulic oil tank into each hydraulic oil way and plays a role of a hydraulic pump. In the embodiment, the plunger pump assembly adopts a manual driving mode, a plunger pump handle is arranged on the plunger rod, and the plunger is driven to move up and down in a pump chamber through the plunger pump handle, so that pumping operation of hydraulic oil is realized.
The fifth check valve 1201 and the sixth check valve 1202 are respectively disposed on a check valve assembly 12, the fifth check valve 1201 and the sixth check valve 1202 are disposed horizontally in parallel on the check valve assembly 12, the check valve assembly 12 is disposed on one side of the pump body, the first oil inlet path 1106 and the second oil inlet path 1107 are respectively and directly communicated with one end of the fifth check valve 1201 on the check valve assembly, the other end of the fifth check valve 1201 is connected to the hydraulic oil tank 13 through the first oil pipe 14, the oil return path 1108 is connected to one end of the sixth check valve 1202 through the second oil pipe, and the other end of the sixth check valve 1202 is connected to the first oil pipe 14 and the hydraulic oil tank 13.
As shown in fig. 4, a hydraulic schematic diagram of the hydraulic driving system in this embodiment is shown, and the operation of the hydraulic driving system will be described with reference to fig. 3 and 4.
When a workpiece is clamped, a valve core in a reversing valve assembly is moved downwards to the lower part of a valve cavity through a reversing valve handle, hydraulic oil is pumped into a pump chamber through a plunger pump handle, hydraulic oil enters the upper part of the reversing valve through a first oil inlet oil path and a first one-way valve, hydraulic oil enters working cavities of all hydraulic cylinders through working oil paths, and the hydraulic oil applies acting force to a piston to eject a thimble from the hydraulic cylinders, so that the thimble clamps the workpiece; at this time, the hydraulic oil in the restoring cavity of the hydraulic cylinder flows back to the hydraulic oil tank through the restoring oil path, the third one-way valve, the oil return oil path and the sixth one-way valve.
When the workpiece is loosened, a valve core in the reversing valve assembly is moved upwards to the upper part of the valve cavity through the reversing valve handle, hydraulic oil is pumped into the pump chamber through the plunger pump, at the moment, hydraulic oil enters into the restoration oil paths through the second oil inlet oil path, the fourth one-way valve and the spiral grooves on the valve core below, hydraulic oil enters into restoration cavities of all the hydraulic oil cylinders respectively through the restoration oil paths, and the hydraulic oil applies acting force to the piston to push the thimble to one side of the working cavity, so that the thimble is retracted into the hydraulic cylinder, and the workpiece is loosened; at this time, the hydraulic oil in the working cavity of the hydraulic cylinder flows back to the hydraulic oil tank through the working oil path, the spiral groove on the upper valve core, the second one-way valve, the oil return oil path and the sixth one-way valve.
As shown in fig. 1, in this embodiment, a positioning mechanism for fixing and positioning a movable clamp body is provided on a base 1, the positioning mechanism includes a positioning block 16 provided on the base and a screw 17 provided on the positioning block, the screw 17 is in threaded connection with the positioning block 16, a limiting chute 18 is provided on the base 1, the bottoms of the movable clamp body 3 and the positioning block 16 are provided with limiting slide rails 19 matched with the limiting chute, the movable clamp body 3 and the positioning block 16 are movably connected with the base 1 through the limiting chute, and a fixing mechanism for fixing the positioning block on the base is provided between the positioning block 16 and the base 1. In the embodiment, the positioning block and the movable clamp body are both arranged in a movable structure, so that the movable clamp is suitable for clamping workpieces with different specifications; after the positioning block is fixed on the base through the fixing mechanism, the adjustment of the movable clamp body and the clamping operation of the movable clamp body and the fixed clamp body on the workpiece can be realized through the adjusting screw.
As shown in fig. 1 and 5, the fixing mechanism in this embodiment includes a plurality of hemispherical positioning grooves 20 arranged on the base at intervals and a fixing component arranged at the bottom of the positioning block, the positioning block 16 is provided with a limiting hole 21 and a fixing hole 22 communicated with the limiting hole, the fixing component includes a limiting ball 23 and a push rod 24 arranged in the limiting hole, and an adjusting rod 25 arranged in the fixing hole, a restoring spring 26 is arranged between the push rod 24 and the limiting ball 23, a part of the adjusting rod 25 is connected with the fixing hole 22 through threads, another part of the adjusting rod 25 is of a conical section structure, one end of the push rod 24 extends into the fixing hole 22, and one end of the push rod 24 extending into the fixing hole 22 is matched with the conical section structure part on the adjusting rod 25. When the positioning block is fixed through the fixing mechanism, the positioning block is slid to the position of the positioning groove, the limiting ball falls into the positioning groove, the adjusting rod is rotated to enable the adjusting rod to move towards the fixing hole, at the moment, the conical section structural part of the adjusting rod applies downward acting force to the ejector rod, the limiting ball is pressed in the positioning groove through the ejector rod, and at the moment, the limiting ball is clamped in the positioning groove to limit the movement of the positioning block in the horizontal direction, so that the positioning block is fixed on the base. On the contrary, the adjusting rod is rotated to enable the adjusting rod to move towards the outer direction of the fixing hole, the acting force on the ejector rod is relieved by the adjusting rod, the ejector rod moves upwards under the action of the restoring spring, the acting force on the limiting ball and the positioning groove can be relieved at the moment, the limiting ball can move up and down in the limiting hole, and therefore the locking of the positioning block is relieved.
The specification and figures are to be regarded in an illustrative rather than a restrictive sense, and one skilled in the art, in light of the teachings of this invention, may make various substitutions and alterations to some of its features without the need for inventive faculty, all being within the scope of this invention.
Claims (5)
1. The utility model provides a hydraulic pressure presss from both sides tight vice, includes the base, and the fixed pincers body and the movable pincers body of setting on the base, its characterized in that: the hydraulic ejector pin mechanism comprises a plurality of hydraulic cylinders respectively arranged on the fixed clamp body and the movable clamp body and a plurality of ejector pins arranged in the hydraulic cylinders, one ends of the ejector pins can extend out from the end faces of the fixed clamp body or the movable clamp body, pistons matched with the hydraulic cylinders are arranged at the end parts of the ejector pins positioned in the hydraulic cylinders, the hydraulic cylinders are divided into independent working cavities and restoring cavities by the pistons, the fixed clamp body and the movable clamp body are respectively provided with a working oil way and a restoring oil way, the working oil ways are respectively communicated with the working cavities of the hydraulic cylinders, the restoring oil ways are respectively communicated with the restoring cavities of the hydraulic cylinders, and the hydraulic driving system is used for providing hydraulic oil for the working cavities or the restoring cavities through the working oil ways and the restoring oil ways, so as to drive the ejector pins to eject and retract in the hydraulic cylinders;
the hydraulic driving system comprises a reversing valve assembly, a combined one-way valve assembly, a plunger pump assembly and a hydraulic oil tank which are sequentially arranged;
the reversing valve assembly comprises a valve body, a valve cavity arranged in the valve body and a valve core assembly arranged in the valve cavity, wherein the valve body is arranged on one side of a fixed clamp body or a movable clamp body, one side of the valve body is provided with a connecting oil way I which is respectively communicated with a working oil way and a restoring oil way, the other end of the connecting oil way I is communicated to the valve cavity, the valve core assembly comprises a valve rod and two valve cores arranged on the valve rod at intervals, and spiral grooves are formed in the surfaces of the valve cores;
The combined check valve assembly is arranged on one side of the valve body, a first check valve, a second check valve, a third check valve and a fourth check valve are sequentially arranged on the combined check valve assembly in parallel, four connecting oil ways II are arranged on one side, connected with the combined check valve assembly, of the valve body, the first check valve, the second check valve, the third check valve and the fourth check valve are respectively communicated with the valve cavity through the four connecting oil ways II, when the valve core assembly is positioned at the bottom of the valve cavity, two valve cores are respectively positioned at the connecting oil ways II between the second check valve and the valve cavity, the first check valve is communicated with a working oil way, the third check valve is communicated with a restoring oil way, when the valve core assembly is positioned at the top of the valve cavity, the two valve cores are respectively positioned at the connecting oil ways II between the first check valve and the third check valve and the valve cavity, the second check valve is communicated with the working oil way through a spiral groove on one valve core, and the fourth check valve is communicated with the restoring oil way through a spiral groove on the other valve core;
The plunger pump assembly is arranged on one side of the combined one-way valve assembly, the plunger pump assembly comprises a pump body, a pump chamber, a plunger and a plunger rod, the pump chamber is arranged on the pump body, the plunger and the plunger rod are arranged in the pump chamber, a first oil inlet oil way, a second oil inlet oil way and an oil return oil way which are communicated with the pump chamber are respectively arranged on the pump body, one end of the first oil inlet oil way is connected with a first one-way valve, one end of the second oil inlet oil way is connected with a fourth one-way valve, the oil return oil way is respectively connected with a second one-way valve and a third one-way valve, the other ends of the first oil inlet oil way, the second oil inlet oil way and the oil return oil way are respectively connected to a hydraulic oil tank, a fifth one-way valve is arranged between the first oil inlet oil way, the second oil inlet oil way and the hydraulic oil tank, and a sixth one-way valve is arranged between the oil return oil way and the hydraulic oil tank;
the valve rod on the valve core assembly is connected with a reversing valve handle, and the switching operation of the oil way is realized by controlling the up-and-down movement of the valve core.
2. The hydraulic clamping vise according to claim 1, wherein: the hydraulic cylinders on the fixed clamp body and the movable clamp body are distributed in a matrix structure, the hydraulic cylinders on the same horizontal plane are arranged at intervals side by side, and the hydraulic cylinders on different horizontal planes are connected with the restoring oil circuit through working oil circuits arranged on the horizontal planes.
3. The hydraulic clamping vise according to claim 1, wherein: the fifth one-way valve and the sixth one-way valve are respectively arranged on a one-way valve assembly, the fifth one-way valve and the sixth one-way valve are horizontally arranged on the one-way valve assembly in parallel, the one-way valve assembly is arranged on one side of the pump body, a first oil inlet oil way and a second oil inlet oil way are respectively and directly communicated with one end of the fifth one-way valve on the one-way valve assembly, the other end of the fifth one-way valve is connected to the hydraulic oil tank through a first oil pipe, the oil return oil way is connected to one end of the sixth one-way valve through a second oil pipe, and the other end of the sixth one-way valve is connected to the first oil pipe and connected with the hydraulic oil tank.
4. The hydraulic clamping vise according to claim 1, wherein: the positioning mechanism comprises a positioning block arranged on the base and a screw rod arranged on the positioning block, the screw rod is connected with the positioning block through threads, a limiting sliding groove is arranged on the base, limiting sliding rails matched with the limiting sliding groove are arranged at the bottoms of the movable clamp body and the positioning block, the movable clamp body is movably connected with the base through the limiting sliding groove and the limiting sliding rail, and a fixing mechanism for fixing the positioning block on the base is arranged between the positioning block and the base.
5. The hydraulic clamping vise according to claim 4, wherein: the fixing mechanism comprises a plurality of hemispherical positioning grooves arranged on the base at intervals and a fixing assembly arranged at the bottom of the positioning block, wherein the positioning block is provided with a limiting hole and a fixing hole communicated with the limiting hole, the fixing assembly comprises a limiting ball and a push rod arranged in the limiting hole and an adjusting rod arranged in the fixing hole, a restoring spring is arranged between the push rod and the limiting ball, one part of the adjusting rod is connected with the fixing hole through threads, the other part of the adjusting rod is of a conical section structure, one end of the push rod extends into the fixing hole, and one end of the push rod extending into the fixing hole is matched with the conical section structure part on the adjusting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910397302.XA CN109968226B (en) | 2019-05-14 | 2019-05-14 | Hydraulic clamping vice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910397302.XA CN109968226B (en) | 2019-05-14 | 2019-05-14 | Hydraulic clamping vice |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109968226A CN109968226A (en) | 2019-07-05 |
| CN109968226B true CN109968226B (en) | 2024-05-10 |
Family
ID=67073640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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| CN110757203A (en) * | 2019-11-23 | 2020-02-07 | 湖南森蓝皮具制造有限公司 | Clamping device for profile metal double-head saw cutting machine |
| CN112091684B (en) * | 2020-09-09 | 2023-08-08 | 厦门奥拓美科技有限公司 | Self-attaching curved surface positioning flexible clamp |
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| CN202360104U (en) * | 2011-09-22 | 2012-08-01 | 南车资阳机车有限公司 | Open type hydraulic system driving screw conveyer on miniature shield machine |
| CN205394310U (en) * | 2016-03-08 | 2016-07-27 | 封富成 | Table vice |
| CN206316952U (en) * | 2016-12-28 | 2017-07-11 | 上海金科机械制造有限公司 | A kind of Hydraulic Clamping Mechanism |
| CN209812102U (en) * | 2019-05-14 | 2019-12-20 | 四川工程职业技术学院 | Hydraulic clamping vice |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001198754A (en) * | 2000-01-17 | 2001-07-24 | Pascal Kk | Clamp system for fixing work |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202360104U (en) * | 2011-09-22 | 2012-08-01 | 南车资阳机车有限公司 | Open type hydraulic system driving screw conveyer on miniature shield machine |
| CN205394310U (en) * | 2016-03-08 | 2016-07-27 | 封富成 | Table vice |
| CN206316952U (en) * | 2016-12-28 | 2017-07-11 | 上海金科机械制造有限公司 | A kind of Hydraulic Clamping Mechanism |
| CN209812102U (en) * | 2019-05-14 | 2019-12-20 | 四川工程职业技术学院 | Hydraulic clamping vice |
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