CN104088927A - Hydraulic clamping device - Google Patents
Hydraulic clamping device Download PDFInfo
- Publication number
- CN104088927A CN104088927A CN201410306079.0A CN201410306079A CN104088927A CN 104088927 A CN104088927 A CN 104088927A CN 201410306079 A CN201410306079 A CN 201410306079A CN 104088927 A CN104088927 A CN 104088927A
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- cylinder
- cylinder body
- cylinder barrel
- hydraulic
- clamping device
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Abstract
The invention discloses a hydraulic clamping device which comprises a cylinder in a groove shape, pistons and pressing plates. A front cylinder barrel and a rear cylinder barrel are arranged on the two sides of the groove of the cylinder and are communicated through a small oil conveying hole in the cylinder. The small oil conveying hole is communicated with an oil inlet of the cylinder. The front cylinder barrel and the rear cylinder barrel are provided with the pistons respectively. The pistons are connected with the pressing plates. A reset device is installed at the bottom of the groove of the cylinder of the hydraulic clamping device and comprises disc springs, top blocks and a guide rod, the two sides of the guide rod are sleeved with the disc springs, and the front ends of the disc springs are connected with the top blocks. The hydraulic clamping device has the advantages that as two single-action hydraulic cylinder bodies are integrated, the boundary dimension of the cylinder is decreased, installation space is reduced, acting force generated when the two single-action hydraulic cylinder bodies operate can offset mutually, a mobile sliding platform and a sliding guide rail are prevented from being affected by clamping force and causing unbalance loading, and the installation accuracy of the mobile sliding platform and the sliding guide rail is ensured. The hydraulic clamping device is small in size, simple in structure, convenient to install and adjust, low in cost, high in operating stability and wide in application range.
Description
Technical field
The present invention relates to a kind of hydraulic pressure installation, be mainly applicable to motion slide unit in each coordinate axes of numerical control machine tool and the clamping between slide guide.
Background technique
In each coordinate axes of numerical control machine tool that adopts slide guide guiding, always exist parts to do relative motion with slide guide, now these parts are called to moving element, when this heavy moving parts is large or movement velocity is larger, because its inertia is very large, it becomes state of rest from motion state needs very large braking force, in the prior art, provides this braking force to mainly contain two kinds of modes:
at the axle head of motor, a clutch is installed, by electricity or hydraulic pressure, is come solenoidoperated cluthes to the holding tightly of motor shaft, produce thus braking force, more progressively transmit by gear, indirectly by moving element and slide guide clamping;
a double-action hydraulic thick stick clamp device is installed on moving element, and the flexible slide guide that directly clamps by piston in oil hydraulic cylinder, produces braking force thus, directly moving element and slide guide is clamped.But these two kinds of modes have some limitations in the middle of practice, mode
in braking force need indirectly progressively transmit by gear, while there is gap in gear, clamping and positioning can produce error; Mode
in used double-action hydraulic thick stick, and design needs the installing space being necessary between moving element and slide guide during double-acting hydraulic cylinder, when this installing space is restricted, this mode implements can be very difficult.
Summary of the invention
The present invention is directed to the problem that above-mentioned prior art exists, a kind of hydraulic clamp of motion slide unit is provided, be specially adapted to the clamping between the restricted motion slide unit of installing space and slide guide.
The technical solution adopted for the present invention to solve the technical problems is:
Hydraulic clamp, comprises cylinder body, piston and pressing plate, and cylinder body is groove type, cylinder body groove both sides are provided with front end cylinder barrel and rear end cylinder barrel, and communicate by the oil transportation aperture in cylinder body, and oil transportation aperture communicates with the filler opening of cylinder body, front end cylinder barrel and rear end cylinder barrel are all equipped with piston, and piston connects pressing plate.
Hydraulic clamp, cylinder body bottom portion of groove is equipped with resetting means, and resetting means comprises butterfly spring, jacking block and guide rod, and butterfly spring is enclosed within guide rod both sides, and the new spring at front end of dish connects jacking block.
Cylinder body is critical piece of the present invention, inside is provided with front end cylinder barrel and rear end cylinder barrel, by inner oil transportation aperture, front end and back end cylinder barrel is connected again, the oil transportation aperture hydraulic fluid port that all follows up communicates, this cylinder body is just equivalent to two single-action hydraulic cylinder cylinder bodies in fact, is designed to a whole benefit and is:
the reaction force producing during the work of two one-way cylinders can be cancelled out each other, and makes coordinating between pivot angle slide unit and slide guide not be subject to the impact of clamping force to occur unbalance loading, has guaranteed their installation precision;
reduce cylinder body boundary dimension, save installing space.
Pressing plate, piston, sealing baffle has formed working piston, totally two, be arranged on respectively in the front end and back end cylinder barrel on cylinder body, between piston and sealing baffle, be provided with seal ring, play seal oil chamber effect, piston and sealing baffle also play leading role simultaneously, working piston can slide by the little stroke in front and back in cylinder barrel, the hydraulic clamp of motion slide unit is clamping under work shape, working solution force feed enters front end and back end oil pocket by filler opening, pushing working piston slides to the direction of middle slide guide, before and after pressing plate on two working pistons, clamp slide guide, hydraulic coupling is converted into clamping force the most at last,
Butterfly spring, jacking block and guide rod have formed the resetting means of working piston, they are arranged in the middle of cylinder body by mounting blocks, when front end and back end oil pocket is connected with leakage passage, because the oil pressure in the oil pocket of front end and back end is very little, the original extrusion of belleville spring produces spring force, this spring force promotes jacking block, and jacking block pushes working piston again and resets, and the last and slide guide of pressing plate on working piston unclamps.
The working piston that pressing plate, piston, sealing baffle form is arranged in the cylinder barrel of cylinder body front and back, and symmetrical, the resetting means that belleville spring, guide rod, jacking block form is arranged in the middle of cylinder body.Its center platen, piston, sealing baffle and cylinder body have been realized the effect that hydraulic coupling is converted to clamping force, realized the effect that pressing plate is clamped with slide guide, belleville spring, guide rod, jacking block have played the effect that working piston is resetted, and have realized the effect that pressing plate is unclamped with slide guide.
Apparatus of the present invention, as a kind of motion slide unit hydraulic clamp, are not only applicable to the clamping of pivot angle slide unit, are also applicable to the clamping of motion slide unit on other rectilinear coordinates axles of numerical control machine tool;
The present invention has following beneficial effect:
By two single-action hydraulic cylinder tank designs are become to an integral body, reduced the boundary dimension of cylinder body, saved installing space, the reaction force producing while simultaneously making two one-way cylinder work can be cancelled out each other, make coordinating between motion slide unit and slide guide not be subject to the impact of clamping force to occur unbalance loading, guaranteed their installation precision; The bodily form is little, simple in structure, and Installation and Debugging are convenient, and cost is low; Working stability is high, applied widely.
Accompanying drawing explanation
Concrete structure of the present invention further describes by embodiment with reference to the accompanying drawings.
Fig. 1 is mounting point figure of the present invention.
Fig. 2 is that the present invention is at the cut-away view unclamping under operating mode.
Fig. 3 is that the present invention is at the cut-away view clamping under operating mode.
In figure: 1. cylinder body, 2. pressing plate, 3. piston, 4. sealing baffle, 5. cylinder end caps, 6. mounting blocks, 7. belleville spring, 8. guide rod, 9. jacking block, 10. filler opening, the little oilhole of 11. front end, 12. front end cylinder barrels, the 13. little oilholes in rear end, 14. rear end cylinder barrels, 15. slide guides, 16. connecting bases, 17. pivot angle slide units, 18. pivot angle tooth bars, 19. Z axis slide units.
Embodiment
Below by an embodiment, and by reference to the accompanying drawings, the present invention is set forth.
Consult Fig. 1, hydraulic clamp, comprise cylinder body 1, piston 3 and pressing plate 2, cylinder body 1 is groove type, and cylinder body groove both sides are provided with front end cylinder barrel 12 and rear end cylinder barrel 14, and communicates by the oil transportation aperture in cylinder body 1, oil transportation aperture communicates with the filler opening 10 of cylinder body, front end cylinder barrel 12 and rear end cylinder barrel 14 are all equipped with piston 3, and piston 3 connects pressing plate 2, and cylinder body groove outside is cylinder end caps 5.
Pressing plate 2, piston 3, sealing baffle 4 have formed working piston, and totally two, be arranged on respectively in the front end and back end cylinder barrel on cylinder body 1, between piston 3 and sealing baffle 4, be provided with seal ring, play seal oil chamber effect.
Butterfly spring 7, jacking block 9 and guide rod 8 have formed the resetting means of working piston, and they are arranged in the middle of cylinder body groove by mounting blocks 6.
Consult Fig. 2, Fig. 3, slide guide 15 is arc, and it is fixed on Z axis slide unit 19, and it be actionless for them can to see, pivot angle tooth bar 18 is fixed on pivot angle slide unit 17, and they are together with respect to slide guide 15 arc slidings.Now apparatus of the present invention are fixed on pivot angle slide unit 17 by connecting base 16, the filler opening 10 on cylinder body 1 is connected with oil pipe, and when filler opening 10 is communicated with pressure release oil circuit, the present invention is in unclamping under operating mode; When filler opening 10 is communicated with working oil path, hydraulic oil is by filler opening 10, through the little oilhole 11 of front end, the little oilhole 13 in rear end, enter respectively front end cylinder barrel 12, rear end cylinder barrel 14 again, then pushing working piston slides to the direction of middle slide guide 15, pressing plate 2 front and back on two working pistons clamp slide guide 15, now, the present invention is in clamping under operating mode; When filler opening 10 switches to while being communicated with pressure release oil circuit again, because the oil pressure in the oil pocket of front end and back end is very little, the original extrusion of belleville spring 7 produces spring force, this spring force promotes jacking block 9, jacking block 9 pushes working piston again and resets, last and the slide guide 15 of pressing plate on working piston 2 unclamps, and now the present invention is again in unclamping under operating mode.Logical mainly with upper implementation step, the present invention has realized the function that pivot angle slide unit 17 and slide guide 15 are clamped or unclamped.
Claims (2)
1. hydraulic clamp, comprise cylinder body, piston and pressing plate, it is characterized in that, cylinder body is groove type, cylinder body groove both sides are provided with front end cylinder barrel and rear end cylinder barrel, and communicate by the oil transportation aperture in cylinder body, and oil transportation aperture communicates with the filler opening of cylinder body, front end cylinder barrel and rear end cylinder barrel are all equipped with piston, and piston connects pressing plate.
2. hydraulic clamp according to claim 1, is characterized in that, cylinder body bottom portion of groove is equipped with resetting means, and resetting means comprises butterfly spring, jacking block and guide rod, and butterfly spring is enclosed within guide rod both sides, and the new spring at front end of dish connects jacking block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410306079.0A CN104088927A (en) | 2014-07-01 | 2014-07-01 | Hydraulic clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410306079.0A CN104088927A (en) | 2014-07-01 | 2014-07-01 | Hydraulic clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104088927A true CN104088927A (en) | 2014-10-08 |
Family
ID=51636670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410306079.0A Pending CN104088927A (en) | 2014-07-01 | 2014-07-01 | Hydraulic clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104088927A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017031797A1 (en) * | 2015-08-21 | 2017-03-02 | 江南大学 | Hydraulic clamping device having powerful self-locking function |
| CN106917835A (en) * | 2017-04-25 | 2017-07-04 | 济南派克机器有限公司 | Guide rail Sha Jin mechanisms |
| CN112809361A (en) * | 2020-12-31 | 2021-05-18 | 杭叉集团股份有限公司 | Front axle assembly adjusting mechanism of electric forklift tool trolley |
| CN112828549A (en) * | 2020-12-31 | 2021-05-25 | 杭叉集团股份有限公司 | Rear axle adjusting mechanism of electric forklift tool trolley |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60249546A (en) * | 1984-05-26 | 1985-12-10 | Masanori Mochizuki | Clamping device for direct-driven table |
| DE29505080U1 (en) * | 1995-03-24 | 1995-06-08 | G & M Zimmer Ohg | Brake and clamping device for guides |
| DE10118534A1 (en) * | 2001-04-14 | 2002-10-24 | Niemann Wolfgang | Clamp system for tools etc. sliding on guide tracks in machining center has clamp piston cylinders with intake and outlet for hydraulic fluid to release clamp pistons |
| CN102317033A (en) * | 2009-02-13 | 2012-01-11 | 京特·齐默尔 | Frictional resistance mechanism with pressure-bearing type retainer |
| CN203292860U (en) * | 2013-06-04 | 2013-11-20 | 上海纳铁福传动轴有限公司 | Positioning device of shuttle table |
| CN204061652U (en) * | 2014-07-01 | 2014-12-31 | 成都飞机工业（集团）有限责任公司 | Hydraulic clamp |
-
2014
- 2014-07-01 CN CN201410306079.0A patent/CN104088927A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60249546A (en) * | 1984-05-26 | 1985-12-10 | Masanori Mochizuki | Clamping device for direct-driven table |
| DE29505080U1 (en) * | 1995-03-24 | 1995-06-08 | G & M Zimmer Ohg | Brake and clamping device for guides |
| DE10118534A1 (en) * | 2001-04-14 | 2002-10-24 | Niemann Wolfgang | Clamp system for tools etc. sliding on guide tracks in machining center has clamp piston cylinders with intake and outlet for hydraulic fluid to release clamp pistons |
| CN102317033A (en) * | 2009-02-13 | 2012-01-11 | 京特·齐默尔 | Frictional resistance mechanism with pressure-bearing type retainer |
| CN203292860U (en) * | 2013-06-04 | 2013-11-20 | 上海纳铁福传动轴有限公司 | Positioning device of shuttle table |
| CN204061652U (en) * | 2014-07-01 | 2014-12-31 | 成都飞机工业（集团）有限责任公司 | Hydraulic clamp |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017031797A1 (en) * | 2015-08-21 | 2017-03-02 | 江南大学 | Hydraulic clamping device having powerful self-locking function |
| CN106917835A (en) * | 2017-04-25 | 2017-07-04 | 济南派克机器有限公司 | Guide rail Sha Jin mechanisms |
| CN112809361A (en) * | 2020-12-31 | 2021-05-18 | 杭叉集团股份有限公司 | Front axle assembly adjusting mechanism of electric forklift tool trolley |
| CN112828549A (en) * | 2020-12-31 | 2021-05-25 | 杭叉集团股份有限公司 | Rear axle adjusting mechanism of electric forklift tool trolley |
| CN112809361B (en) * | 2020-12-31 | 2022-05-06 | 杭叉集团股份有限公司 | Front axle assembly adjusting mechanism of electric forklift tool trolley |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141008 |