CN103752878B - External clamping type hydraulic clamping device - Google Patents
External clamping type hydraulic clamping device Download PDFInfo
- Publication number
- CN103752878B CN103752878B CN201410051817.1A CN201410051817A CN103752878B CN 103752878 B CN103752878 B CN 103752878B CN 201410051817 A CN201410051817 A CN 201410051817A CN 103752878 B CN103752878 B CN 103752878B
- Authority
- CN
- China
- Prior art keywords
- piston assembly
- stack shell
- elastic hinge
- piston
- hinge block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/107—Retention by laterally-acting detents, e.g. pins, screws, wedges; Retention by loose elements, e.g. balls
- B23B31/1078—Retention by wedges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
- B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
- B23B31/302—Hydraulic equipment, e.g. pistons, valves, rotary joints
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses an external clamping type hydraulic clamping device, and belongs to a workpiece clamping tool. An upper plate and a lower plate are fixedly arranged on the upper end face of a cylinder body and the lower end face of the cylinder body respectively. A wedge block is fixedly arranged on the upper plate. A piston assembly is inserted into a center hole of the wedge block and located in a closed cavity of the cylinder body. A seal ring is arranged on the outer circular surface of the piston portion of the piston assembly. The piston assembly is sleeved with a laminated spring. The upper end face of the laminated spring and the lower end face of the laminated spring make contact with and are matched with the upper plate and the piston assembly respectively. A discharge hole is formed in the cylinder body. A lower cavity of the cylinder body is fixedly connected with an oil tank through a pipeline. A hydraulic pump is connected into the pipeline. The wedge block is sleeved with an elastic hinge block. The elastic hinge block is sleeved with a limiting ring in an embedded mode. A turning-connection plate is arranged at the upper end portion of the piston assembly through pre-tightening screws. The turning-connection plate is fixedly connected with the elastic hinge block. The external clamping type hydraulic clamping device is simple in structure, good in work quality, high in reliability and high in adaptability.
Description
Technical field
The invention belongs to work binder tool, relate generally to the accurate annular workpieces clamping device in equipment manufacturing field.
Background technology
In ultraprecise metrology and measurement and Ultra-precision Turning field, at a high speed, clamping device that is stable, registration is the basic guarantee carrying out accurate measurement and aero-engine assembling.At present, along with the progress of material science, and the raising of the accuracy class of ultra precise measurement instrument and Ultra-precision Turning manufacturing equipment, the design ap-plication of high-precision annular workpieces is more and more extensive, and the utensil in its process becomes the basis ensureing machining accuracy.
HeFei University of Technology proposes the axial fastening chuck of a kind of oscillating rod type (the axial fastening chuck of a kind of oscillating rod type.Patent publication No.: CN 201210212982.1).The program devises power chuck body and expansion chuck body, and radial direction is uniformly distributed three chutes and is embedded with end pawl and pawling, and top is provided with oscillating bar assembly, this structure can overcome Workpiece structure complicated time tradition chuck be difficult to the problem that clamps.The problem of the program is, adopts axial grip, is not suitable for thin wall cylinder-shaped workpiece.
Beijing Qixing Huachuang Electronics Co., Ltd proposes a kind of disk clamping device (disk clamping device.Patent publication No.: CN 201110365937.5).The program mainly comprises chuck main body, cam, limited block, at least three hold assemblies, when cam rotates with chuck main body, limited block is along the fixing described hold assembly of chuck main body radial direction, the feature of this structure is the clip position not limiting manipulator, achieves the clamping to pan when or else damaging clipped object part.The problem of the program is, adopt wild card design, hold assembly can produce deformation to profile, concerning very important ultraprecise part.
Patent No. US4840387 proposes a kind of halfnut and chuck and to work in coordination the chucking device of tight lock, the feature of this structure is that reliability is high, manual adjustments chuck can be facilitated to tighten degree, problem is that structure is complicated a little, clamping for large-scale workpiece needs the ratio of corresponding raising device, cause the frictional force adjusted to increase, be unfavorable for assembling and be installed.
On the whole, traditional scroll chuck, multi-jaw chuck clamping device, because self is to the natural defect of workpiece discontinuity, make the damage likely surface of the work being produced to unrepairable in assembling process.And more and more workpiece that is large-scale, super sized ring design constantly occurs, the volume of traditional scroll chuck, multi-jaw chuck clamping device should the corresponding growth along with the increase of annulus external diameter, financial cost is not preponderated all the more, simultaneously on the contrary limit design personnel to the design of large-scale ring workpiece.
Therefore, design a shortcoming that can overcome traditional chuck structure, and have that stability is high simultaneously, registration, clamping device to advantages such as workpiece surface damage are little, significant to Fine Boring manufacturing industry.
Summary of the invention
Object of the present invention is exactly for above-mentioned prior art Problems existing, and in conjunction with actual demand, design provides a kind of external clamping type hydraulic pressure catching device, reaches and improves accurate annular workpieces crudy, object adaptable, easy to use.
Technical scheme of the present invention is:
The upper surface of stack shell is closely fixedly mounted with upper plate, the lower surface of stack shell is closely fixedly mounted with lower plate, wedge is fixedly fitted on upper plate, in stack shell Inner Constitution airtight chamber; The bar portion of piston assembly is inserted in wedge centre bore, the piston portion of piston assembly is fitted in the airtight chamber of stack shell Inner Constitution, airtight chamber is separated into the upper chamber cut off completely and lower chambers, equipped sealing ring on the piston region outer round surface of piston assembly, folded spring is sleeved in piston assembly, and being positioned at stack shell upper chamber, the upper surface of described folded spring contacts with upper plate lower surface and coordinates, and the lower surface of folded spring to be contacted with the piston portion of piston assembly by packing ring and coordinates; Stack shell lower chambers through pipeline and fuel tank affixed, in hydraulic pump access conduit; The elastic hinge block that can radially shrink or expand is sleeved on wedge upper side external, and spacing collar is nested on elastic hinge block outside; The upper end, bar portion of piston assembly is fixedly mounted with keyset by pre-loading screw, described keyset and elastic hinge block affixed, so far form external clamping type hydraulic pressure catching device.
The good result of technological innovation of the present invention and generation is:
Hydraulicdriven various element, can arrange as required easily and flexibly; Lightweight, volume is little, motional inertia is little, reaction speed is fast; Maneuvering and control is convenient, can realize large-scale stepless speed regulation; The Based Intelligent Control of operating rate can be realized, the easy adjustment of input and output torque and operating rate; Reliability is high, long service life, can realize buffering.
Accompanying drawing explanation
Accompanying drawing is that external clamping type hydraulic pressure catching device entirety shows that structure is intended to.
Piece number in figure: 1-lower plate; 2-stack shell; 2-steam vent; 3-folded spring; 4-spacing collar; 5-piston assembly; 6-elastic hinge block; 7-keyset; 8-pre-loading screw; 9-wedge; 10-packing ring; 11-upper plate; 11-wedge; 12-packing ring; 13-upper plate; 14-stack shell; 14-1-steam vent; 15-hydraulic pump; 16-pipeline; 17-fuel tank.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the invention is described in further detail.
A kind of external clamping type hydraulic pressure catching device, it is characterized in that: on the upper surface of stack shell 2, be closely fixedly mounted with upper plate 11, the lower surface of stack shell 2 is closely fixedly mounted with lower plate 1, wedge 9 is fixedly fitted on upper plate 11, in stack shell 2 Inner Constitution airtight chamber; The bar portion of piston assembly 5 is inserted in wedge 9 centre bore, the piston portion of piston assembly 5 is fitted in the airtight chamber of stack shell 2 Inner Constitution, airtight chamber is separated into the upper chamber cut off completely and lower chambers, equipped sealing ring 12 on the piston region outer round surface of piston assembly 5, folded spring 3 is sleeved in piston assembly 5, and be positioned at stack shell 2 upper chamber, the upper surface of described folded spring 3 contacts with upper plate 11 lower surface and coordinates, and the lower surface of folded spring 3 is contacted with the piston portion of piston assembly 5 by packing ring 10 and coordinates; Stack shell 2 lower chambers is affixed through pipeline 14 and fuel tank 15, in hydraulic pump 13 access conduit 16; The elastic hinge block 6 that can radially shrink or expand is sleeved on wedge 9 upper side external, and spacing collar 4 is nested on elastic hinge block 6 outside; The upper end, bar portion of piston assembly 5 is fixedly mounted with keyset 7 by pre-loading screw 8, and described keyset 7 is affixed with elastic hinge block 6.
When operation uses, hydraulic pump rotates forward, to enter the bottom chamber of stack shell 2 through pipeline from fuel tank oil pumping, folded spring 3 is compressed in piston assembly 5, and promotes piston assembly 5 and do work, drive keyset 7, elastic hinge block 6 move upward, discharged through steam vent 2-1 by the epicoele room air of stack shell 2, elastic hinge block 6 and wedge 9 are disengaged, and elastic hinge block 6 shrinks simultaneously, elastic hinge block 6 top contacts with annular workpiece, the clamping of implement device and workpiece; When hydraulic pump rotates backward, oil in pipeline returns to fuel tank, folded spring 3 elastic force externally does work, promote piston assembly 5 to move downward, and then make elastic hinge block 6 and wedge 9 pressurized again, the radial component of contact surface makes elastic hinge block 6 expand outwardly, and elastic hinge block 6 top and annular workpiece disengage again, and implement device is separated with workpiece.Time elastic hinge block 6 does not have restriction accurately to extend out degree, spacing collar 4 supplementary position-limiting actions.
Claims (1)
1. an external clamping type hydraulic pressure catching device, it is characterized in that: on the upper surface of stack shell (2), be closely fixedly mounted with upper plate (11), the lower surface of stack shell (2) is closely fixedly mounted with lower plate (1), wedge (9) is fixedly fitted on upper plate (11), in stack shell (2) Inner Constitution airtight chamber, the bar portion of piston assembly (5) is inserted in wedge (9) centre bore, the piston portion of piston assembly (5) is fitted in the airtight chamber of stack shell (2) Inner Constitution, airtight chamber is separated into the upper chamber cut off completely and lower chambers, equipped sealing ring (12) on the piston region outer round surface of piston assembly (5), folded spring (3) is sleeved in piston assembly (5), and be positioned at stack shell (2) upper chamber, the upper surface of described folded spring (3) contacts with upper plate (11) lower surface and coordinates, the lower surface of folded spring (3) is contacted with the piston portion of piston assembly (5) by packing ring (10) and coordinates, stack shell (2) lower chambers is affixed through pipeline (14) and fuel tank (15), in hydraulic pump (13) access conduit (16), the elastic hinge block (6) that can radially shrink or expand is sleeved on wedge (9) upper side external, and spacing collar (4) is nested on elastic hinge block (6) outside, the upper end, bar portion of piston assembly (5) is fixedly mounted with keyset (7) by pre-loading screw (8), and described keyset (7) is affixed with elastic hinge block (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051817.1A CN103752878B (en) | 2014-02-14 | 2014-02-14 | External clamping type hydraulic clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051817.1A CN103752878B (en) | 2014-02-14 | 2014-02-14 | External clamping type hydraulic clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103752878A CN103752878A (en) | 2014-04-30 |
| CN103752878B true CN103752878B (en) | 2015-06-03 |
Family
ID=50520281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410051817.1A Expired - Fee Related CN103752878B (en) | 2014-02-14 | 2014-02-14 | External clamping type hydraulic clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103752878B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293056A (en) * | 2015-11-30 | 2016-02-03 | 苏州研高自动化科技有限公司 | Six-finger pneumatic claw pushing device |
| CN113579278B (en) * | 2021-07-16 | 2022-09-16 | 浙江天马轴承集团有限公司 | Hydraulic jack catch for finish turning of bearing ring |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3624994B2 (en) * | 1996-05-17 | 2005-03-02 | 株式会社コスメック | Work support |
| CN2709089Y (en) * | 2004-06-09 | 2005-07-13 | 顾三荣 | Fixed pneumatic holding base seat |
| CN101125406B (en) * | 2006-08-16 | 2010-09-29 | 比亚迪股份有限公司 | Ball fixed block and its manufacturing device |
| CN201702405U (en) * | 2010-06-03 | 2011-01-12 | 许国荣 | Power chuck |
-
2014
- 2014-02-14 CN CN201410051817.1A patent/CN103752878B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103752878A (en) | 2014-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20200214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |