CN111992774B - Intelligent reconfigurable drilling clamp for circumferential thin plate - Google Patents
Intelligent reconfigurable drilling clamp for circumferential thin plate Download PDFInfo
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- CN111992774B CN111992774B CN202010721196.9A CN202010721196A CN111992774B CN 111992774 B CN111992774 B CN 111992774B CN 202010721196 A CN202010721196 A CN 202010721196A CN 111992774 B CN111992774 B CN 111992774B
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- 238000005553 drilling Methods 0.000 title claims abstract description 40
- 238000006073 displacement reaction Methods 0.000 claims abstract description 21
- 238000001179 sorption measurement Methods 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000003754 machining Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
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- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/002—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring the holding action of work or tool holders
- B23Q17/005—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring the holding action of work or tool holders by measuring a force, a pressure or a deformation
-
- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
-
- 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
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/082—Work-clamping means other than mechanically-actuated hydraulically actuated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
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Abstract
本发明公开了一种圆周型薄板件智能可重构钻孔夹具，主要针对目前曲面薄板件和圆形薄板件工装不稳定因素多，易引起工件变形超差，自动化水平低等缺点。此智能工装主要包括三个部分，感知部分：安装在基础板上的光栅位移传感器、液压缸内部的位移传感器、定位球头处的拉压力传感器和吸盘下端盖上的真空压力传感器；控制部分：数据采集装置、PLC和上位机；执行部分：弧形滑块导轨组件和液压连杆分度组件。此智能可重构钻孔夹具适用于薄板件的钻孔加工，定位夹紧装置采用分度式传动机构，能够在钻孔间隙智能周向调整装夹位置，并完成对薄板件的装夹，提高工件的最终加工质量。
The invention discloses an intelligent reconfigurable drilling fixture for a circular thin plate piece, which mainly aims at the shortcomings of the current curved thin plate piece and circular thin plate piece with many unstable factors, easy to cause excessive deformation of the workpiece, and low automation level. This intelligent tooling mainly includes three parts, the sensing part: the grating displacement sensor installed on the base plate, the displacement sensor inside the hydraulic cylinder, the tension pressure sensor at the positioning ball head and the vacuum pressure sensor on the lower end cover of the suction cup; the control part: Data acquisition device, PLC and host computer; executive part: arc slider guide rail assembly and hydraulic link indexing assembly. This intelligent reconfigurable drilling fixture is suitable for the drilling processing of thin plate parts. The positioning and clamping device adopts an indexing transmission mechanism, which can intelligently adjust the clamping position in the drilling gap in the circumferential direction, and complete the clamping of thin plate parts. Improve the final machining quality of the workpiece.
Description
Technical Field
The invention belongs to the technical field of manufacturing equipment, and particularly relates to an intelligent reconfigurable drilling clamp for a circumferential sheet piece.
Background
At present, the aerospace, ship and automobile manufacturing industries in China develop rapidly, and thin plate parts have the characteristics of light weight, corrosion resistance and the like, so that the thin plate parts are widely applied to products such as airplanes, automobiles and the like, the number of parts can be effectively reduced, and the production cost is reduced. However, most of the parts have poor rigidity and are in free-form surface shapes, and the accuracy of hole making is ensured with certain difficulty.
The existing curved sheet part manufacturing tool mostly adopts an N-2-1 over-constrained positioning mode, and adjusts a clamp through a linear motion mechanism, so that the positioning of various curved sheet parts of different types and specifications is realized. Although the tool has certain universality and improves the drilling precision, most of tools are still manually or semi-automatically adjusted, a linear motion mechanism is adopted, only fixed clamping is carried out in the whole machining and manufacturing process, the clamping state cannot be determined, and the requirement of a thin plate on higher hole-making precision cannot be met.
In order to overcome the defects of the existing free-form surface sheet piece dot-matrix reconfigurable tool, an intelligent reconfigurable drilling clamp which can feed back clamping information in real time and adjust clamping layout according to different hole making positions needs to be developed.
Disclosure of Invention
The invention aims to provide an intelligent reconfigurable drilling clamp for circumferential thin plate pieces, which is suitable for clamping curved surface thin plate pieces and circular thin plate pieces with different specifications, can detect and analyze actual clamping information, adjusts the tool layout and the clamping force in a drilling gap, meets the requirement of various industries on higher drilling precision of the thin plate pieces at present, and ensures the overall performance of products.
The invention adopts the technical scheme that the circumferential type sheet piece intelligent reconfigurable drilling fixture comprises a square steel support and a control part, wherein a transfer plate is laid on the square steel support, a circular and concentric outer arc-shaped slide block guide rail and an inner arc-shaped slide block guide rail are assembled on the transfer plate, an arc-shaped slide block guide rail assembly is arranged between the outer arc-shaped slide block guide rail and the inner arc-shaped slide block guide rail, and a circle of racks are arranged along the outer ring of the inner arc-shaped slide block guide rail; the arc-shaped sliding block guide rail assembly comprises an outer arc-shaped sliding block guide rail; the arc-shaped sliding block guide rail assembly can slide along the outer arc-shaped sliding block guide rail and the inner arc-shaped sliding block guide rail, a hydraulic connecting rod indexing assembly is further arranged on the arc-shaped sliding block guide rail assembly, and the hydraulic connecting rod indexing assembly is connected with the bottom surface positioning adsorption assembly; the bottom surface positioning adsorption assembly is used for positioning and clamping thin-walled parts, the control part is used for analyzing and processing actual clamping information, optimal tool layout and clamping force data, and the positioning clamping position and the clamping force are adjusted in machining gap control.
The present invention is also characterized in that,
the control part comprises a data acquisition device, a PLC (programmable logic controller) and an upper computer, the data acquisition device is connected with the PLC and continuously receives clamp layout information, the PLC is connected with the upper computer, the upper computer inputs the optimal clamping layout information of different drilling positions to the PLC, and the upper computer can display the actual clamping position, the positioning point contact force and the clamping force.
The arc-shaped sliding block guide rail assembly comprises a foundation plate, the foundation plate is sleeved on the outer arc-shaped sliding block guide rail and the inner arc-shaped sliding block guide rail through a sliding block at the bottom, a driving gear is further arranged at the bottom of the foundation plate and connected with a servo motor through a coupler, the driving gear is meshed with a rack, and the foundation plate is driven to move through the servo motor; the front end of the foundation plate is provided with a grating displacement sensor.
The base plate is provided with a hydraulic connecting rod indexing assembly, the hydraulic connecting rod indexing assembly is connected with the base plate through an installation base, the hydraulic connecting rod indexing assembly comprises a first connecting rod and a second connecting rod, one end of the second connecting rod is hinged to the installation base through a rotating pin, the other end of the second connecting rod is movably connected with the first connecting rod, and the other end of the first connecting rod is connected with the bottom surface positioning adsorption assembly through a supporting plate; a hydraulic cylinder a with a hydraulic rod is connected between the first connecting rod and the second connecting rod; a hydraulic cylinder b with a hydraulic rod is hinged to the mounting base, the hydraulic rod end of the hydraulic cylinder b is fixedly connected to the second connecting rod, and the hydraulic cylinder b and the hydraulic cylinder a are respectively positioned on two sides of the second connecting rod; and displacement sensors are respectively embedded in the hydraulic cylinder a and the hydraulic cylinder b.
The bottom surface positioning and adsorbing assembly comprises a universal ball with a threaded rod at the bottom, and an upper end cover and a lower end cover which are oppositely arranged and used for buckling the universal ball in the middle, and the upper end cover and the lower end cover are connected together through corresponding threaded holes; the universal ball is connected to the supporting plate through a threaded rod, a groove is further formed in the universal ball, a pulling pressure sensor is embedded in the groove, a positioning ball head is fixedly mounted on a threaded hole of the pulling pressure sensor, an annular vacuum sucking disc is fixedly connected to the upper end cover, a vacuum pressure sensor is further mounted on the lower end cover, and the vacuum pressure sensor is communicated with a suction hole formed by the vacuum sucking disc and used for measuring the vacuum degree in the vacuum sucking disc.
Still include side locating component, side locating component is including location dog and fixed scale, and the location dog passes through bolted connection on the waist type hole of square steel support, and fixed scale pastes near the location dog, ensures that the location dog can accurately move the assigned position.
The number of the arc-shaped sliding block guide rail assemblies is not less than 4.
Compared with the prior art, the intelligent reconfigurable drilling clamp for the circumferential sheet part, provided by the invention, has the beneficial effects that (1) the clamping position is adjusted in an indexing manner, so that the clamp is suitable for clamping sheet parts with different sizes or the same sheet part at different positions; (2) sensing and analyzing clamping layout information in real time, and intelligently adjusting the clamping layout in a machining gap according to different drilling positions; (3) the drilling processing of the round thin plate is convenient.
Drawings
FIG. 1 is a working principle diagram of an intelligent reconfigurable drilling fixture for circumferential type thin plate pieces, disclosed by the invention;
FIG. 2 is an overall structural diagram of an intelligent reconfigurable drilling fixture for circumferential sheet parts according to the invention;
FIG. 3 is a side positioning assembly diagram of an intelligent reconfigurable drilling fixture for circumferential sheet pieces according to the present invention;
FIG. 4 is a diagram of an arc-shaped slider guide rail indexing assembly of the intelligent reconfigurable drilling fixture for circumferential sheet pieces according to the present invention;
FIG. 5 is a diagram of a hydraulic link indexing assembly of the circumferential sheet intelligent reconfigurable drilling fixture of the present invention;
FIG. 6 is a structural cross-sectional view of a bottom positioning adsorption assembly of the intelligent reconfigurable drilling fixture for circumferential sheet pieces according to the invention;
FIG. 7 is a view of the initial placement of the circumferential sheet intelligent reconfigurable drilling fixture of the present invention;
FIG. 8 is a working state diagram of the circumferential type thin plate intelligent reconfigurable drilling clamp.
In the figure: 1. the device comprises a square steel support, 2. an adapter plate, 3. an arc-shaped slide block guide rail component, 4. a hydraulic connecting rod indexing component, 5. a bottom surface positioning adsorption component, 6. a side positioning component, 7. a graduated scale, 8. a positioning stop block, 9. an outer arc-shaped slide block guide rail, 10. a servo motor, 11. an inner arc-shaped slide block guide rail, 12. a grating displacement sensor, 13. a base plate, 14. a driving gear, 15. a rack, 16. an installation base, 17. a displacement sensor, 18. a first connecting rod, 19. a supporting plate, 20. a hydraulic cylinder a, 21. a rotating pin, 22. a vacuum pressure sensor, 23. a vacuum sucker, 24. a positioning ball head, 25. a pulling pressure sensor, 26. an upper end cover, 27. a lower end cover and 28. a universal ball.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The principle of intelligently clamping a thin-wall part by the aid of the circumferential type thin-plate part intelligent reconfigurable drilling clamp device is shown in figure 1, after the positioning and clamping position of the thin-wall part is determined, the position of a positioning and clamping element of the tool needs to be adjusted, and a workpiece is positioned in an N-2-1 positioning mode. An encoder of a servo motor detects the rotation amount of an actual motor, the actual position of the sliding table is determined through a grating displacement sensor installed on an arc-shaped guide rail, a displacement sensor embedded in a hydraulic cylinder feeds back the expansion amount of a hydraulic rod, a pull pressure sensor and a vacuum pressure sensor are installed on a bottom surface positioning adsorption assembly, the pull pressure sensor detects the contact force of a positioning point, the bulb is ensured to be completely attached to the bottom surface of a workpiece, and the vacuum pressure sensor monitors the adsorption force; the PLC receives detection data from the sensor and clamping layout information input by the upper computer, analyzes and determines the adjustment amount of each mechanism, firstly controls the motor and the hydraulic system to adjust the layout of the clamp, positions the workpiece, and then controls the vacuum assembly to clamp the thin-wall parts.
The invention relates to a circumferential type sheet piece intelligent reconfigurable drilling fixture, which comprises a square steel support 1 and a control part, wherein an adapter plate 2 is laid on the square steel support 1, a circular and concentric outer arc-shaped sliding block guide rail 9 and an inner arc-shaped sliding block guide rail 11 are assembled on the adapter plate 2, an arc-shaped sliding block guide rail assembly 3 is arranged between the outer arc-shaped sliding block guide rail 9 and the inner arc-shaped sliding block guide rail 11, and a circle of rack 15 is arranged along the outer ring of the inner arc-shaped sliding block guide rail 11; the arc-shaped sliding block guide rail component 3 comprises an outer arc-shaped sliding block guide rail 9; the arc-shaped sliding block guide rail component 3 can slide along the outer arc-shaped sliding block guide rail 9 and the inner arc-shaped sliding block guide rail 11, a hydraulic connecting rod indexing component 4 is further arranged on the arc-shaped sliding block guide rail component 3, and the hydraulic connecting rod indexing component 4 is connected with the bottom surface positioning adsorption component 5; the bottom surface positioning adsorption assembly 5 is used for clamping a thin-wall part, the control part is used for analyzing and processing actual clamping information, optimal tool layout and clamping force data, and a drilling gap control motor is used for adjusting and positioning clamping positions and clamping force.
The control part comprises a data acquisition device, a PLC (programmable logic controller) and an upper computer, the data acquisition device is connected with the PLC and continuously receives clamp layout information, the PLC is connected with the upper computer, the upper computer inputs the optimal clamping layout information of different drilling positions to the PLC, and the upper computer can display the actual clamping position, the positioning point contact force and the clamping force.
As shown in fig. 4, the arc-shaped slider guide rail assembly 3 includes a base plate 13, the base plate 13 is sleeved on the outer arc-shaped slider guide rail 9 and the inner arc-shaped slider guide rail 11 through a slider at the bottom, a driving gear 14 is further disposed at the bottom of the base plate 13, the driving gear 14 is connected to the servo motor 10 through a coupling, the driving gear 14 is engaged with the rack 15, and the base plate is driven to move through the servo motor 10; the front end of the base plate 13 is provided with a grating displacement sensor 12.
A hydraulic connecting rod indexing component 4 (shown in fig. 5) is mounted on the base plate 13, the hydraulic connecting rod indexing component 4 is connected with the base plate 13 through a mounting base 16, the hydraulic connecting rod indexing component 4 comprises a first connecting rod 18 and a second connecting rod, one end of the second connecting rod is hinged to the mounting base 16 through a rotating pin 21, the other end of the second connecting rod is movably connected with the first connecting rod 18, and the other end of the first connecting rod 18 is connected with the bottom surface positioning adsorption component 5 through a supporting plate 19; a hydraulic cylinder a20 with a hydraulic rod is connected between the first connecting rod 18 and the second connecting rod; a hydraulic cylinder b with a hydraulic rod is hinged to the mounting base 16, the hydraulic rod end of the hydraulic cylinder b is fixedly connected to the second connecting rod, and the hydraulic cylinder b and the hydraulic cylinder a20 are respectively positioned on two sides of the second connecting rod; the displacement sensor 17 is embedded in each of the hydraulic cylinder a20 and the hydraulic cylinder b.
As shown in fig. 6, the bottom positioning adsorption assembly 5 includes a universal ball 28 with a threaded rod at the bottom, and an upper end cap 26 and a lower end cap 27 oppositely arranged for fastening the universal ball 28 in the middle, wherein the upper end cap 26 and the lower end cap 27 are connected together through corresponding threaded holes; the universal ball 28 is connected to the supporting plate 19 through a threaded rod, a groove is further formed in the universal ball 28, and the universal ball 28 can rotate within a certain angle range; the groove is internally embedded with a pull pressure sensor 25, the positioning ball head 24 is fixedly installed on a threaded hole of the pull pressure sensor 25, the upper end cover 26 is fixedly connected with an annular vacuum sucker 23, the lower end cover 27 is also provided with a vacuum pressure sensor 22, and the vacuum pressure sensor 22 is communicated with the vacuum sucker 23 through a suction hole and used for measuring the vacuum degree in the vacuum sucker.
As shown in fig. 3, the square steel support frame further comprises a side positioning component 6, wherein the side positioning component 6 comprises a positioning stop block 8 and a fixed graduated scale 7, the positioning stop block 8 is connected to the waist-shaped hole of the square steel support frame 1 through a bolt, and the fixed graduated scale 7 is adhered to the positioning stop block 8 tightly, so that the positioning stop block can be ensured to accurately move to a specified position and keep a correct position.
The number of the arc-shaped sliding block guide rail assemblies is not less than 4.
As shown in fig. 7, in the non-operating state, the arc-shaped slider guide rail assembly 3, the hydraulic link indexing assembly 4, the bottom surface positioning suction assembly 5 and the side edge positioning assembly 6 are in the initial positions.
Fig. 8 is the working state of the clamp for positioning and clamping the thin-wall part. When different hole positions are machined, the positions of the positioning clamping elements and the clamping force of the tool need to be readjusted, and the clamping layout of the clamp at different machining positions is always in the optimal state.
The specific working principle of the invention is as follows:
1. the grating displacement sensor on the arc-shaped sliding block guide rail assembly detects the actual arrival position of a sliding block at the bottom of a foundation plate and the arrangement of a clamp detected by a displacement sensor in a hydraulic cylinder, a tension pressure sensor detects whether a workpiece is in contact with a positioning ball head or not, a vacuum pressure sensor feeds back the clamping force, a data acquisition device receives the positioning arrangement and the vacuum adsorption force fed back by a detection assembly, the feedback information is transmitted to a PLC (programmable logic controller), the PLC analyzes and decides the detection information and the clamping arrangement information input by an upper computer, a servo motor is controlled, and a hydraulic system and a vacuum chuck are used for adjusting the arrangement of the clamp and the size of the clamping force.
2. The two positioning stop blocks are used for positioning the long edges of the skins, the displacement of the short edges is limited by one positioning stop block, and the skins with different sizes can be adjusted by using kidney-shaped holes; the bottom surface positioning adsorption component further completely determines the position of the skin through the positioning ball head and performs adsorption clamping. And the bottom surfaces of the curved-surface thin plate pieces are repositioned when gaps are machined at different hole positions, and are adsorbed and clamped through a pneumatic system, so that the clamping layout at different drilling positions is always optimal.
3. The detection module comprises a grating displacement sensor arranged on the arc-shaped guide rail, a pull pressure sensor arranged inside the universal ball, a vacuum pressure sensor arranged on the vacuum sucker and a displacement sensor arranged inside the hydraulic cylinder.
4. A tension and pressure sensor is arranged in the universal ball and is connected with the positioning ball head through a threaded hole, so that the stress state of the curved surface thin plate in the clamping process is sensed, and the positioning ball head is ensured to be in full contact with a workpiece; the vacuum pressure sensor on the lower end cover can monitor the clamping force in real time; an encoder arranged on the servo motor can feed back the actual rotation quantity of the sliding block, and an actual position is detected by using a grating displacement sensor; and the displacement sensor feeds back the actual telescopic amount of the hydraulic cylinder, and the position of the positioning ball head is further determined.
5. The arc-shaped slide block guide rail indexing component and the hydraulic connecting rod indexing component both adopt an indexing transmission mode; the structure is round, not only can be suitable for positioning and clamping thin-walled pieces with different curvatures and sizes to a certain extent, but also is beneficial to processing and manufacturing the disc-shaped thin-walled pieces. The bottom positioning adsorption component arranged on the supporting plate comprises a positioning ball head and a vacuum chuck; the arc-shaped slide block guide rail indexing assembly realizes the adjustment of the clamping position of the bottom surface on an XOY plane; the hydraulic link indexing assembly can adjust the Z-direction position of the positioning clamping point.
The 6.4 bottom surface positioning adsorption components are circumferentially arranged and adjusted, and can clamp different positions of the same thin-wall part. And processing gaps at different hole positions, repositioning the bottom surface of the curved-surface thin plate by the positioning ball head at different positions, and adsorbing and clamping by the vacuum chuck to keep the clamping layout at different drilling positions to be optimal all the time.
7. The bottom surface positioning and adsorbing assembly can be adjusted through the arc-shaped slider guide rail indexing assembly and the hydraulic connecting rod indexing assembly, and thin-wall parts with different curvatures and different shapes can be clamped in a certain range.
A drilling method of an intelligent reconfigurable drilling clamp for circumferential thin plate pieces comprises the following specific operation steps:
step 1: the displacement sensor 17 and the grating displacement sensor 12 arranged on the foundation plate 13 feed back the position data of the hydraulic cylinder a, the hydraulic cylinder b and the positioning ball head to the PLC;
step 2: the PLC controller determines the adjustment amount by analyzing the detection data and the position data of different hole site positioning points input by the upper computer.
And step 3: the PLC controller sends a control signal to the driver to control the rotation amount of the servo motor, and adjusts the positions of the hydraulic cylinder a, the hydraulic cylinder b and the arc-shaped sliding block guide rail assembly 3, so that the position of the positioning ball head 25 is changed.
And 4, step 4: and placing the thin-wall part on the bottom positioning ball head 25 and abutting against the three positioning stop blocks 8 on the long side and the short side to complete the positioning of the thin-wall part.
And 5: the PLC receives the detection data of the clamping force from the vacuum pressure sensor 22, analyzes the detection data and the optimal clamping force data, determines the adjustment amount, controls the air pump to adjust the clamping force, and finishes clamping the thin-wall workpiece.
And (3) repeating the steps 1-5 by the intelligent reconfigurable clamp before each hole site is machined, and positioning and clamping the thin plate.
Claims (5)
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| CN202010721196.9A CN111992774B (en) | 2020-07-24 | 2020-07-24 | Intelligent reconfigurable drilling clamp for circumferential thin plate |
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