CN103769898B - Precision hydraulic grab-clamping mechanism based on tracking and pre-tightening - Google Patents
Precision hydraulic grab-clamping mechanism based on tracking and pre-tightening Download PDFInfo
- Publication number
- CN103769898B CN103769898B CN201410051818.6A CN201410051818A CN103769898B CN 103769898 B CN103769898 B CN 103769898B CN 201410051818 A CN201410051818 A CN 201410051818A CN 103769898 B CN103769898 B CN 103769898B
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- CN
- China
- Prior art keywords
- piston assembly
- stack shell
- piston
- wedge
- keyset
- 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
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Classifications
-
- 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
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
-
- 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
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/04—Work clamping means using fluid means or a vacuum
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manipulator (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a precision hydraulic grab-clamping mechanism based on tracking and pre-tightening and belongs to a working clamp device. An upper plate and a lower plate are fixedly arranged on the upper end face and the lower end face of a barrel body respectively; a wedge block is fixedly arranged on the upper plate; a piston assembly is inserted into a central hole of the wedge block and is positioned in a closed cavity of the barrel body; sealing rings are arranged on the surface of the external circle of a piston part of the piston assembly; the piston assembly is sleeved with laminated springs, and the upper end faces and the lower end faces of the laminated springs are in contact with the upper plate and the piston assembly respectively; exhaust holes are formed in the barrel body; a lower cavity of the barrel body is fixedly connected with an oil tank through a pipeline; a hydraulic pump is connected to the pipeline; an elastic hinge block is sleeved upon the outer part of the wedge block; a switching plate is mounted at the upper end part of the piston assembly through a pre-tightening screw and is fixedly connected with the elastic hinge block; adjustment knobs are assembled on the switching plate; a limiting screw and a limiting column are inserted into the switching plate and are in threaded connection with the wedge block. The precision hydraulic grab-clamping mechanism is simple in structure, high in working 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 and grabs mechanism for card based on tracking with the precise hydraulic of pretension, reaches and improves accurate annular workpieces crudy, object adaptable, easy to use.
Technical scheme of the present invention is:
Closely be fixedly mounted with upper plate in the upper surface of stack shell, be closely fixedly mounted with lower plate in the lower surface of stack shell, 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; The upper end, bar portion of piston assembly is fixedly mounted with keyset by pre-loading screw, described keyset and elastic hinge block affixed, by threaded engagement, adjustment knob is fitted on keyset, stop screw and limited post are inserted on keyset, and stop screw and limited post are threaded with wedge, so far form and grab mechanism for card based on tracking with the precise hydraulic of pretension.
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 grabbed mechanism for card entirety with the precise hydraulic of pretension show that structure is intended to based on following the tracks of.
Piece number in figure: 1-lower plate; 2-sealing ring; 3-folded spring; 4-piston assembly; 5-elastic hinge block; 6-stop screw; 7-pre-loading screw; 8-adjustment knob; 9-limited post; 10-keyset; 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 based on tracking grab mechanism for card with the precise hydraulic of pretension, it is characterized in that: be closely fixedly mounted with upper plate 13 in the upper surface of stack shell 14, closely be fixedly mounted with lower plate 1 in the lower surface of stack shell 14, wedge 11 is fixedly fitted on upper plate 13, in stack shell 14 Inner Constitution airtight chamber; The bar portion of piston assembly 4 is inserted in wedge 11 centre bore, the piston portion of piston assembly 4 is fitted in the airtight chamber of stack shell 14 Inner Constitution, airtight chamber is separated into the upper chamber cut off completely and lower chambers, equipped sealing ring 2 on the piston region outer round surface of piston assembly 4, folded spring 3 is sleeved in piston assembly 4, and be positioned at stack shell 14 upper chamber, the upper surface of described folded spring 3 contacts with upper plate 13 lower surface and coordinates, and the lower surface of folded spring 3 is contacted with the piston portion of piston assembly 4 by packing ring 12 and coordinates; Stack shell 14 lower chambers is affixed through pipeline 16 and fuel tank 17, in hydraulic pump 15 access conduit 16; The elastic hinge block 5 that can radially shrink or expand is sleeved on wedge 11 upper side external; The upper end, bar portion of piston assembly 4 is fixedly mounted with keyset 10 by pre-loading screw 7, described keyset 10 is affixed with elastic hinge block 5, by threaded engagement, adjustment knob 8 is fitted on keyset 10, stop screw 6 and limited post 9 are inserted on keyset 10, and stop screw 6 and limited post 9 are threaded with wedge 11.
When operation uses, hydraulic pump rotates forward, to enter the bottom chamber of stack shell 15 through pipeline from fuel tank oil pumping, folded spring 3 is compressed in piston assembly 4, and promotes piston assembly 4 and do work, drive keyset 10, elastic hinge block 5 move upward, discharged through steam vent 14-1 by the epicoele room air of stack shell 14, elastic hinge block 5 and wedge 11 are disengaged, and elastic hinge block 5 shrinks simultaneously, outer ring and annular workpiece disengage, and implement device is separated with workpiece; When hydraulic pump rotates backward, oil in pipeline returns to fuel tank, folded spring 3 elastic force externally does work, promote piston assembly 4 to move downward, and then make elastic hinge block 5 and wedge 11 pressurized again, the radial component of contact surface makes elastic hinge block 5 expand outwardly, and outer ring and annular workpiece compress again, being installed of implement device and workpiece.
Described grabs in mechanism for card based on tracking with the precise hydraulic of pretension, and stop screw 6 for limited piston assembly 4 movement travel upwards, and then limits the shrinkage degree of elastic hinge block 5; Adjustment knob 8 and limited post 9 with the use of, by setting the height of limited post 9 in advance, rotate adjustment knob 8 and makes the two contact, what then accurately can limit elastic hinge block 5 expands outwardly degree.
Claims (1)
1. grab mechanism for card based on tracking with the precise hydraulic of pretension for one kind, it is characterized in that: be closely fixedly mounted with upper plate (13) in the upper surface of stack shell (14), lower plate (1) is closely fixedly mounted with in the lower surface of stack shell (14), wedge (11) is fixedly fitted on upper plate (13), in stack shell (14) Inner Constitution airtight chamber, the bar portion of piston assembly (4) is inserted in wedge (11) centre bore, the piston portion of piston assembly (4) is fitted in the airtight chamber of stack shell (14) Inner Constitution, airtight chamber is separated into the upper chamber cut off completely and lower chambers, equipped sealing ring (2) on the piston region outer round surface of piston assembly (4), folded spring (3) is sleeved in piston assembly (4), and be positioned at stack shell (14) upper chamber, the upper surface of described folded spring (3) contacts with upper plate (13) lower surface and coordinates, the lower surface of folded spring (3) is contacted with the piston portion of piston assembly (4) by packing ring (12) and coordinates, stack shell (14) lower chambers is affixed through pipeline (16) and fuel tank (17), in hydraulic pump (15) access conduit (16), the elastic hinge block (5) that can radially shrink or expand is sleeved on wedge (11) upper side external, the upper end, bar portion of piston assembly (4) is fixedly mounted with keyset (10) by pre-loading screw (7), described keyset (10) is affixed with elastic hinge block (5), to adjust knob (8) by threaded engagement is fitted on keyset (10), stop screw (6) and limited post (9) are inserted on keyset (10), and stop screw (6) and limited post (9) are threaded with wedge (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051818.6A CN103769898B (en) | 2014-02-14 | 2014-02-14 | Precision hydraulic grab-clamping mechanism based on tracking and pre-tightening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051818.6A CN103769898B (en) | 2014-02-14 | 2014-02-14 | Precision hydraulic grab-clamping mechanism based on tracking and pre-tightening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103769898A CN103769898A (en) | 2014-05-07 |
| CN103769898B true CN103769898B (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410051818.6A Expired - Fee Related CN103769898B (en) | 2014-02-14 | 2014-02-14 | Precision hydraulic grab-clamping mechanism based on tracking and pre-tightening |
Country Status (1)
| Country | Link |
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| CN (1) | CN103769898B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111469078A (en) * | 2020-05-28 | 2020-07-31 | 广东欧亚包装有限公司 | Flexible mechanical claw |
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 |
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2014
- 2014-02-14 CN CN201410051818.6A patent/CN103769898B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN103769898A (en) | 2014-05-07 |
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Granted publication date: 20150603 Termination date: 20210214 |