CN109454556A - A kind of adaptive frock clamp of flexibility for curved surface part - Google Patents
A kind of adaptive frock clamp of flexibility for curved surface part Download PDFInfo
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- CN109454556A CN109454556A CN201811608950.7A CN201811608950A CN109454556A CN 109454556 A CN109454556 A CN 109454556A CN 201811608950 A CN201811608950 A CN 201811608950A CN 109454556 A CN109454556 A CN 109454556A
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- curved surface
- surface part
- valve
- vacuum
- double acting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The present invention relates to a kind of adaptive frock clamps of flexibility for curved surface part.The tooling includes mobile platform, support unit and control unit, and the mobile platform setting of one or more groups of tower structures is on the base;Dot matrix distribution is provided with the moveable support unit of multiple groups in the transverse guides of mobile platform, and each support unit includes vacuum chuck and double acting locking cylinder, and the output end of the cylinder rod of double acting locking cylinder connects vacuum chuck;Control unit includes servo motor, master control switch electromagnetic valve, solenoid directional control valve, proportional dump valve and vacuum generator, servo motor connects and drives support unit transversely guide rail reciprocating movement by lead screw, master control switch electromagnetic valve is connected to and controls locking or the releasing orientation of whole double acting locking cylinders, each solenoid directional control valve controls the front and back cavity pressure of corresponding double acting locking cylinder, each solenoid directional control valve is connected with corresponding proportional dump valve, and vacuum generator connects and controls vacuum chuck.
Description
Technical field
The present invention relates to mechanical clamp fields, more particularly to a kind of adaptive tooling folder of flexibility for curved surface part
Tool.
Background technique
During aircraft manufacturing, it is applied to many various types of space curved surface composite material (such as carbon fibers, glass fibers
Dimension) structural member, it needs to polish to surface before the spraying of these parts, needs to carry out clamping to part before polishing to fix.Such
Parts character is that wall is thin, rigidity is weak, type kind is various, geomery is different and same model part molding surface size precision is consistent
Property is poor, part exchanging is frequent.It is to Fixture Design requirement: there is general interchangeability, adapt to various part difference Dimension Type faces
It is required that;It is unable to clamping parts upper surface;Part has certain rigidity after clamping, and it is indeformable that surface can bear certain pressure.At present
Aircraft manufacturing industry carries out clamping to large-scale curved part using a kind of digitlization flexible frock of servo motor driving.Digitlization
Tooling has a multi-group vacuum sucker composition of dot matrix distribution, X that each sucker is driven by servo motor ball-screw, Z coordinate,
Running fix under process control, generates and part curved surface complies fully with and equally distributed absorption dot matrix, can accurately, reliable determine
Position and some thin-walled parts of clamping.When airplane parts type face changes, absorption dot matrix accordingly changes under SERVO CONTROL.
This digitlization flexible frock in such wall plate parts of clamping the problem is that: because of Composite Panels class
Part is big and thin, and part realistic model and pure mathematics model consistency are often very poor, and part periphery measurement and positioning when clamping
Datum level is inaccurate, the precision and part itself precision of the supporting point position of the Serve Motor Control based on part theory digital-to-analogue
Between there are error, part lower surface cannot be bonded completely with supporting point, rigid entirety cannot be formed after parts fixation, when polishing
It will appear parts locally flexible deformation, influence quality of polishing;Such design of part size is big, and the number of support points needed is more, watches
The fixture for taking control is at high cost.
Therefore, it is necessary to a kind of good adaptive frock clamps of flexibility for different size curved surface part of versatility, can
It is convenient for changing, adjusts, improve positional accuracy.
Summary of the invention
The embodiment of the invention provides a kind of adaptive frock clamps of flexibility for curved surface part, can be directed to different rule
The curved surface part of lattice clamps, and conveniently adjusts or replaces, and improves positional accuracy, guarantees part and supporting point energy after clamping
Enough fittings completely, while meeting integral rigidity requirement.
The embodiment of the present invention proposes a kind of adaptive frock clamp of flexibility for curved surface part, comprising:
Mobile platform, the mobile platform setting of one or more groups of tower structures on the base, are used to support entirety
Curved surface part, the mobile platform are equipped with transverse guides;
Support unit, it is movably described to be provided with multiple groups for dot matrix distribution in the transverse guides of the mobile platform
Support unit, each support unit include vacuum chuck and double acting locking cylinder, the double acting locking cylinder
The output end of cylinder rod connects the vacuum chuck, and the vacuum chuck is used for the support point of adsorption curve part lower surface
It sets;
Control unit includes at least servo motor, master control switch electromagnetic valve, solenoid directional control valve, proportional dump valve and vacuum
Generator, the servo motor, which connects and passes through lead screw, drives the support unit to move back and forth along the cross slide way, described
Master control switch electromagnetic valve is connected to and controls all locking of the double acting locking cylinder or releasing orientation, the solenoid directional control valve
To the double acting locking cylinder is corresponding one by one is arranged, each solenoid directional control valve is connected to and controls the corresponding double cropping
With the front and back cavity pressure of locking cylinder, each solenoid directional control valve is connected with the corresponding proportional dump valve, described true
Empty generator connects and controls the vacuum chuck.
In the first possible implementation, the solenoid directional control valve uses 3 position-5 way solenoid valve, for controlling
State the different conditions commutation of open and close or holding of the double acting locking cylinder in the 3 position-5 way solenoid valve.
In conjunction with above-mentioned possible implementation, in the second possible implementation, the double acting locking cylinder is equal
It is removably mounted in the transverse guides by guide runner.
In conjunction with above-mentioned possible implementation, in the third possible implementation, the double acting locking cylinder
The output end of cylinder rod and the vacuum chuck are rotatablely connected, and rotate the vacuum chuck in predetermined angular range.
In conjunction with above-mentioned possible implementation, in the fourth possible implementation, on the double acting locking cylinder
Equipped with two or more guide rods.
In conjunction with above-mentioned possible implementation, in a fifth possible implementation, described control unit further includes gas
Dynamic control assembly, the pneumatic control component connect and control the vacuum generator.
In conjunction with above-mentioned possible implementation, in a sixth possible implementation, it is equipped in the vacuum generator
For carrying out the vacuum pressure switch of vacuum degree measurement.
In conjunction with above-mentioned possible implementation, in the 7th kind of possible implementation, the bottom of the mobile platform is logical
Idler wheel is crossed to be movably disposed on the pedestal.
In conjunction with above-mentioned possible implementation, in the 8th kind of possible implementation, the pressure of the proportional dump valve
Setting value is according to the quality settings of curved surface part.
In conjunction with above-mentioned possible implementation, in the 9th kind of possible implementation, according to the shape ruler of curved surface part
Very little and bars position determines that each supporting point position of part lower surface, the corresponding support unit of servo motor driving move
It moves to corresponding each supporting point position of the lower surface of curved surface part.
To sum up, the present invention devises the adaptive frock clamp of flexibility for curved surface part, single by mobile platform, support
The collaborative work of member and control unit can be directed to the efficient clamping of different size curved surface part.Frock clamp of the invention is set
Rationally, structure is simple for meter, and part exchanging is easy to adjust, accurate positioning, part is rigidly good after clamping, the part category that adapts to is more,
Manufacturing cost is greatly saved.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described, it should be apparent that, drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of adaptive frock clamp schematic diagram of flexibility for curved surface part of the embodiment of the present invention.
In figure:
10- proportional dump valve;11- mobile platform;12- curved surface part;13- servo motor;14- master control switch electromagnetic valve;
15- double acting locking cylinder;16- vacuum chuck;17- lead screw;18- vacuum generator;19- solenoid directional control valve.
Specific embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following embodiment it is detailed
Thin description and attached drawing cannot be used to limit the scope of the invention for illustratively illustrating the principle of the present invention, i.e., of the invention
It is not limited to described embodiment, covers part, component and connection type under the premise of without departing from the spirit of the present invention
Any modification, replacement and improvement.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to accompanying drawings and in conjunction with the embodiments.
Fig. 1 is a kind of schematic diagram of the adaptive frock clamp of flexibility for curved surface part of the embodiment of the present invention.Such as Fig. 1
Shown, which includes mobile platform 11, support unit and control unit, wherein one or more groups of tower structures
Mobile platform 11 is arranged on the base, is used to support whole curved surface part 12, and transverse guides are equipped on mobile platform 11;It is moving
Dot matrix distribution is provided with the moveable support unit of multiple groups in the transverse guides of moving platform 11, and each support unit includes vacuum
Sucker 16 and double acting locking cylinder 15, the output end of the cylinder rod of double acting locking cylinder 15 connect the vacuum chuck 16, very
Suction disk 16 is used for the supporting point position of 12 lower surface of adsorption curve part;Servo motor 13, total is included at least in control unit
Control switch electromagnetic valve 14, solenoid directional control valve 19, proportional dump valve 10 and vacuum generator 18, wherein servo motor 13 connects simultaneously
It drives support unit to move back and forth along the cross slide way of mobile platform 11 by lead screw 17, avoids part lower surface bars position;
Master control switch electromagnetic valve 14 is connected to and controls locking or the releasing orientation of whole double acting locking cylinders 15;Solenoid directional control valve 19 with
The corresponding matching setting one by one of double acting locking cylinder 15, each solenoid directional control valve 19 are connected to and control corresponding double acting locking
The front and back cavity pressure of cylinder 15, each solenoid directional control valve 19 are connected with corresponding proportional dump valve 10, and vacuum generator 18 connects
It connects and controls vacuum chuck 16.
As a kind of preferred embodiment, solenoid directional control valve 19 uses 3 position-5 way solenoid valve, for controlling double acting locking
Cylinder 15 commutates in the different conditions of open and close or the holding of the 3 position-5 way solenoid valve.
As another alternative embodiment, double acting locking cylinder 15 is removably mounted at by guide runner traversing dynamic
Platform on guide plate.
Wherein, the output end of the cylinder rod of double acting locking cylinder 15 and vacuum chuck 16 are rotatablely connected, and inhale the vacuum
Disk 16 rotates in predetermined angular range.
Preferably, when need long stroke it is mobile when, double acting locking cylinder 15 is equipped with and two or more leads
To bar.It should be noted that double acting locking cylinder 15 of the invention can be using the double-acting cylinder of outsourcing standard and corresponding
The locking head of adaptation can also design the self-control double-acting cylinder for being able to satisfy particular/special requirement and corresponding locking according to actual needs
Head.
As other preferred embodiments, control unit further includes pneumatic control component, which connects simultaneously
Control vacuum generator 18.
When operation, the double acting locking cylinder 15 of different numbers can be selected to participate according to the size and shape of curved surface part 12
It supports and passes through process control cylinder and go up and down;The pressure of proportional dump valve 1-10 is adjusted by program, pressure set points meet gas
Cylinder lifting force is less than or equal to the pts wt (can precalculate weight according to part model) born required for the supporting point, cylinder
When rising, stroke top tight workpiece is adaptively adjusted after reaching part lower surface;Vacuum chuck 16 can be according to part lower surface inclination angle
Size is adaptively adjusted the angle and is bonded completely with the lower surface of curved surface part 12;Each vacuum chuck 16 is true by one group
Empty generator 18 controls, and the vacuum pressure switch for carrying out vacuum degree measurement is equipped in vacuum generator 18.Vacuum generator
18, which can control vacuum chuck 16, generates vacuum, and vacuum pressure switch measures vacuum degree;The locking head of all cylinders is logical
Master control switch electromagnetic valve 14 is crossed to control locking and release.Before 12 clamping of curved surface part, all cylinder locking head ventilations are unclamped, institute
There is cylinder to be adjusted to lower demotion, after the cylinder for participating in support rises in place, while vacuum chuck 16 forms vacuum, master control switch
Solenoid valve 14 controls locking head and dies locking, and the solenoid directional control valve 19 of three position five-way valve returns to interposition, so that realization is to part
Flexibility it is adaptive clamp, can guarantee and be seamlessly connected between part and each supporting point, part has sufficiently rigid after locking.
Further, the pressure set points of proportional dump valve 10 are according to the quality settings of curved surface part.Using ratio pressure regulation
The control of valve 10 has the double acting locking cylinder 15 of locking head, the cylinder lifting force for meeting 10 pressure set points of proportional dump valve
Less than or equal to the weight (weight can be precalculated according to part model) of the curved surface part 12 of receiving corresponding to the supporting point, air pressure
Driving cylinder slowly rises, make can the vacuum chuck 16 of automatic swinging directly withstand on the lower surface of curved surface part 12, be achieved
Cylinder and sucker can adjust stroke and pivot angle according to the form adaptive of piece surface, realize self-adapting flexible clamping
Purpose.Different part shape variation multiplicity are overcome, same part shape dimensional accuracy is inconsistent, and part edge is without accurate fixed
The problem of position datum level.When using frock clamp of the invention, as long as curved surface part 12 is ridden on mobile platform 11, part side
Edge does not need more accurately to position, that is, can guarantee that each supporting point of support unit is accurately bonded with part lower surface, it is ensured that part
Have after clamping sufficiently rigid.
The bottom of mobile platform 11 can be movably disposed on pedestal by idler wheel.Specifically, mobile platform 11 can
Using the trolley form with idler wheel, locking mode of dying is can be used in double acting locking cylinder 15, can make part in the state of dying
It still obtains being attracted locking.Convenient for part being drawn to other stations by trolley and carries out polishing quality after the completion of part being polished
It examines and the manual supplemental grinding in part.The movement of one or more trolley forms can also be selected according to the size of curved surface part 12
The support that platform 11 simultaneously participates in part clamps, and realizes modular combination.
As other preferred embodiments, part lower surface is determined according to the outer dimension of curved surface part 12 and bars position
Each supporting point position, by servo motor 13 drive corresponding support unit be moved to curved surface part 12 lower surface it is corresponding each
Supporting point position.
Therefore, curved surface part 12 is clamped using frock clamp of the invention, the course of work are as follows: first to each
Support unit is numbered, and according to the shape and model weight of curved surface part, determines that the coordinate point of support unit supports point is (corresponding
Number), then drive each respective support unit to reach preset coordinates position by servo motor 13.Master control switch electromagnetic valve 14 is controlled
The locking head for making all double acting locking cylinders 15 unclamps, and solenoid directional control valve 19 controls all cylinders and is in lower demotion, by curved surface
Part 12 is placed on mobile platform 11, controls double acting locking cylinder 15 by the solenoid directional control valve 19 of chosen support unit
Cylinder rod rise, until vacuum chuck 16 withstands on 12 lower surface of curved surface part, while the adaptive pivot angle of vacuum chuck 16 is fitted in
The lower surface of part controls vacuum chuck 16 by vacuum generator 18 and generates vacuum, while the vacuum in vacuum generator 18
The suctorial vacuum degree of pressure switch detection institute reaches requirement, and then it is disconnected to control all cylinder locking heads for master control switch electromagnetic valve 14
Gas locked, the last power-off of solenoid directional control valve 19 return to middle control position, and part clamping at this time finishes.
The process of part release work are as follows: control valve makes 16 breaking vacuum of vacuum chuck in vacuum generator 18, removes zero
Part.Master control switch electromagnetic valve 14 is powered, and the cylinder locking head of double acting locking cylinder 15 unclamps, and solenoid directional control valve 19 makes on cylinder
Chamber ventilation, all cylinders are fallen after rise, complete the unloading of part.
It should be clear that all the embodiments in this specification are described in a progressive manner, each embodiment it
Between the same or similar part may refer to each other, the highlights of each of the examples are it is different from other embodiments it
Place.The invention is not limited to particular step described above and shown in figure and structures.Also, for brevity,
Here the detailed description to known method technology is omitted.
The above description is only an example of the present application, is not restricted to the application.The scope of the present invention is not being departed from
In the case where to those skilled in the art, various changes and changes are possible in this application.It is all in spirit herein and
Any modification, equivalent replacement, improvement and so within principle, should be included within the scope of claims hereof.
Claims (10)
1. a kind of adaptive frock clamp of flexibility for curved surface part, comprising:
Mobile platform, the mobile platform setting of one or more groups of tower structures on the base, are used to support whole curved surface
Part, the mobile platform are equipped with transverse guides;
Support unit, dot matrix distribution is provided with the multiple groups movably support in the transverse guides of the mobile platform
Unit, each support unit include vacuum chuck and double acting locking cylinder, the cylinder of the double acting locking cylinder
The output end of bar connects the vacuum chuck, and the vacuum chuck is used for the supporting point position of adsorption curve part lower surface;
Control unit includes at least servo motor, master control switch electromagnetic valve, solenoid directional control valve, proportional dump valve and vacuum and occurs
Device, the servo motor, which connects and passes through lead screw, drives the support unit to move back and forth along the cross slide way, the master control
Switch electromagnetic valve is connected to and controls all locking of the double acting locking cylinder or releasing orientation, the solenoid directional control valve and institute
It states double acting locking cylinder to be accordingly arranged one by one, each solenoid directional control valve is connected to and controls the corresponding double acting lock
The front and back cavity pressure of tight cylinder, each solenoid directional control valve are connected with the corresponding proportional dump valve, the vacuum hair
Raw device connects and controls the vacuum chuck.
2. the flexibility adaptive frock clamp according to claim 1 for curved surface part, which is characterized in that the electromagnetism
Reversal valve uses 3 position-5 way solenoid valve, for control the double acting locking cylinder the opening of the 3 position-5 way solenoid valve,
The different conditions commutation closed or kept.
3. the flexibility adaptive frock clamp according to claim 1 for curved surface part, which is characterized in that the double cropping
Pass through guide runner with locking cylinder to be removably mounted in the transverse guides.
4. the flexibility adaptive frock clamp according to claim 1 for curved surface part, which is characterized in that the double cropping
It is rotatablely connected with the output end of the cylinder rod of locking cylinder and the vacuum chuck, makes the vacuum chuck in predetermined angular range
Interior rotation.
5. the flexibility adaptive frock clamp according to claim 1 for curved surface part, which is characterized in that the double cropping
Two or more guide rods are equipped with locking cylinder.
6. the flexibility adaptive frock clamp according to claim 1 for curved surface part, which is characterized in that the control
Unit further includes pneumatic control component, and the pneumatic control component connects and controls the vacuum generator.
7. the flexibility adaptive frock clamp according to claim 1 for curved surface part, which is characterized in that the vacuum
The vacuum pressure switch for carrying out vacuum degree measurement is equipped in generator.
8. the flexibility adaptive frock clamp according to claim 1 for curved surface part, which is characterized in that the movement
The bottom of platform is movably disposed on the pedestal by idler wheel.
9. the flexibility adaptive frock clamp according to claim 1 for curved surface part, which is characterized in that the ratio
The pressure set points of pressure regulator valve are according to the quality settings of curved surface part.
10. the flexibility adaptive frock clamp according to claim 1 for curved surface part, which is characterized in that according to song
The outer dimension and bars position of surface parts determine each supporting point position of part lower surface, and the servo motor driving is corresponding
The support unit is moved to corresponding each supporting point position of the lower surface of curved surface part.
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CN201810910693 | 2018-08-10 | ||
CN2018109106936 | 2018-08-10 |
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CN201811608950.7A Pending CN109454556A (en) | 2018-08-10 | 2018-12-27 | A kind of adaptive frock clamp of flexibility for curved surface part |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113369726A (en) * | 2021-08-11 | 2021-09-10 | 沈阳华天航空机械有限公司 | Double-station laser cutting workstation |
CN113814451A (en) * | 2021-10-13 | 2021-12-21 | 南京航空航天大学 | Self-adaptive tool and flexible clamping method for annular rotary thin-wall part |
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CN113814451A (en) * | 2021-10-13 | 2021-12-21 | 南京航空航天大学 | Self-adaptive tool and flexible clamping method for annular rotary thin-wall part |
CN113814451B (en) * | 2021-10-13 | 2022-05-13 | 南京航空航天大学 | Self-adaptive tool and flexible clamping method for annular rotary thin-wall part |
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