CN103048126B - Loading device for load-unbalance experiment of static-pressure rotary table - Google Patents
Loading device for load-unbalance experiment of static-pressure rotary table Download PDFInfo
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- CN103048126B CN103048126B CN201210537478.9A CN201210537478A CN103048126B CN 103048126 B CN103048126 B CN 103048126B CN 201210537478 A CN201210537478 A CN 201210537478A CN 103048126 B CN103048126 B CN 103048126B
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Abstract
The invention relates to a loading device for the load-unbalance experiment of a static-pressure rotary table, which is applicable to the fixed-point type load-unbalance loading test of a small-size static-pressure experimental rotary table. The loading device comprises a loading supporting frame, an L-shaped fixed plate, a hydraulic cylinder, a hydraulic-cylinder joint, a pressure sensor, a connecting block, a universal wheel and a flat plate. The whole loading device is fixedly arranged around the rotary table through the foundation bolts of four vertical posts of the loading supporting frame so as to ensure that the loading device can not loose or offset in a loading process; a kidney slot on the back of the L-shaped fixed plate is matched with a bolt hole on a crossbeam of the loading supporting frame and is contacted with the flat plate on a table top by adopting the universal wheel, so that the fine adjustment and the large-amplitude adjustment of loading positions can be realized. Through the invention, the position unchanging of loading points relative to a rotary-table oil pad in the loading process can be realized, and the loading positions are adjusted and the magnitude of loading forces is accurately monitored according to the requirements of loading experiments, so that the loading device is only subjected to the force in a vertical direction in the loading process, the stability of the loading device is high, and data and results obtained form the load-unbalance experiment are convenient to analyze.
Description
Technical field
The present invention relates to a kind of device loaded for the experiment of static pressure turntable unbalance loading, this type of charger is specially adapted to the fixed-point type unbalance loading load test of small-sized static experiment turntable.
Background technology
Fluid pressure turntable adopts hydrodynamic journal liquid polymers as supporting, and by the functional part that turntable main shaft function and motor function combine together from structure, major function supports and drive workpiece to realize precision/ultraprecise to rotate and Precision Machining.Fluid pressure turntable adopts pressure film as actuating medium, there is high-mechanic stiffness characteristics, without wearing and tearing between friction pair, run steadily sensitive, make static pressure turntable have high rotating accuracy and positioning precision, be applied widely in large-scale, ultra-large type, ultra-precision machine tool and instrument industry.
In actual applications, due to the scrambling of workpiece shapes, when being fixed to static pressure turntable, easily cause the unevenness that turntable carries, have influence on static pressure turntable rotary stability and machine finish, so research static pressure turntable offset load resistance and in unbalance loading situation the serviceability of turntable very necessary, corresponding unbalance loading experiment charger also has corresponding requirement.In unbalance loading load test, loading force can adjust size in real time accurately as required on the one hand, load(ing) point can adjust along turntable diameter direction on the other hand, can obtain experimental data and the performance evaluation of the oil pocket of static pressure turntable under different rotating speeds, different load(ing) point, different loading force so accurately.
In sum, design a kind of device that can realize static pressure turntable unbalance loading and load, extremely important to grasp static pressure turntable static and dynamic performance.
Summary of the invention
The object of this invention is to provide a kind of can the size of accurate controlled loading power, and experimentally can need the static pressure turntable unbalance loading experiment charger adjusting loading Position.The present invention can realize in loading procedure, and load(ing) point remains unchanged relative to static pressure turntable lubricating pad position, by adjusting the size of the real-time adjustment loading force of hydraulic valve, and from pressure transducer, obtains corresponding load value; The position of load(ing) point can be changed simultaneously, obtain the static pressure turntable serviceability under different offset loading force under different load(ing) point.
The present invention adopts following technological means to realize:
A kind of static pressure turntable unbalance loading experiment charger, this device comprises bracing frame 1, L-type fixed head 2, hydraulic cylinder 3, hydraulic cylinder joint 4, pressure transducer 5, contiguous block 6, universal wheel 7, flat board 8 and turntable 9.Bracing frame 1 comprises four mullions, two symmetrical crossbeams of across, adopts square cold-bend hollow profiled bar to be welded, and four mullions are fixed on around turntable 9 by foot bolt; Kidney slot A is opened at the back of L-type fixed head 2, is fixed on the crossbeam of bracing frame 1 with bolt by L-type plate 2, simultaneously the bottom opening B of L-type plate 2, hydraulic cylinder 3 and L-type plate 2 is fixed together by bolt; Crossbeam is at least opened the two rows bolt hole adjusted for loading position at regular intervals; The two ends of hydraulic cylinder joint 4 adopt externally threaded form, and one end is connected with hydraulic cylinder 3, and one end is connected with pressure transducer 5 in addition, together with being secured to hydraulic cylinder 3 by pressure transducer 5; Threaded hole is all left in pressure transducer about 5 two ends, and upper end is connected with hydraulic cylinder 3 by hydraulic cylinder joint 4, and lower end is connected with universal wheel 7 by contiguous block 6; Flat board 8 is fixed on turntable 9 table top as the roller track of universal wheel 7.
Further, pressure transducer 5 is S type pressure transducer, is convenient to connect because this pressure transducer has screw thread.
Adopt above design proposal, be characterized in:
(1) adopt hydraulic cylinder to load, the size of controlled loading power that can be real-time, and obtained the numerical value of loading force by pressure transducer accurately;
(2), after whole charger is fixed, its position remains unchanged relative to the lubricating pad be fixed in turret base, and like this in turntable rotation process, load(ing) point remains unchanged relative to the position of oil pocket,
(3) L-type fixed head is adopted to be connected between hydraulic cylinder with bracing frame, trickle adjustment can be done to loading position on the one hand by the position of adjustment L-type fixed head back kidney slot, two rows bolt hole at regular intervals is opened on the other hand on bracing frame crossbeam, when needs do larger adjustment to loading position, can be able to be completed by the cooperation position changing bolt and bracing frame crossbeam upper bolt hole, these two kinds of adjustment modes ensure that the accuracy of loading position.
(4) adopt universal wheel as with turntable deck contact, charger can be ensured only by the power of vertical direction, avoid the interference of power to charger in other directions.
Accompanying drawing explanation
Fig. 1 is unbalance loading experiment charger general structure schematic diagram;
Fig. 2 is unbalance loading experiment charger general structure side view;
Fig. 3 is charger partial structurtes schematic diagram;
Fig. 4 is for loading support frame structure vertical view;
Fig. 5 is L-type fixed head three direction view;
Fig. 6 is universal wheel and contiguous block connected mode schematic diagram;
Fig. 7 is pressure transducer and universal wheel connected mode schematic diagram.
In figure: 1 is bracing frame, 2 is L-type fixed head, and 3 is hydraulic cylinder, and 4 is hydraulic cylinder joint, and 5 is pressure transducer, and 6 is contiguous block, and 7 is universal wheel, and 8 is dull and stereotyped, and 9 is turntable.
Embodiment
Describe the present invention below in conjunction with Figure of description.
Be static pressure turntable unbalance loading experiment charger as shown in Figure 1, Figure 2, Figure 3 shows, in figure, 1 is charger bracing frame, and 2 is L-type fixed head, and 3 is hydraulic cylinder, and 4 is hydraulic cylinder joint, and 5 is pressure transducer, and 6 is contiguous block, and 7 is universal wheel, and 8 is dull and stereotyped, and 9 is turntable.
Charger bracing frame 1 is bolted with ground and L-type fixed head 2 respectively; Hydraulic cylinder 3 and L-type fixed head 2 are fixed by bolts to bottom L-type fixed head 2 by the ring flange of hydraulic cylinder; Hydraulic cylinder joint 4 is connected with hydraulic cylinder 3, pressure transducer 5 respectively by the screw thread at upper and lower two ends, is connected to by pressure transducer 5 on hydraulic cylinder 3; Universal wheel 7 is connected with S type pressure transducer by bolt by contiguous block 6, realizes the transmission of loading force along vertical direction; Flat board 8 is fixed on and turntable table top rotates along with turntable and rotates, and contacts with universal wheel 7, ensures that universal wheel can rotate stably in loading procedure.
Fig. 4 is charger bracing frame, comprise four root posts, two sections of crossbeams, with bolt, the base angle disk of four columns and ground are fixed, one section of crossbeam is opened the through hole that two rows keep at a certain distance away, these through holes can coordinate with the kidney slot of L-type fixed head and adjust the load(ing) point of charger on static pressure turntable table top, can play small adjustment and significantly adjust.
Fig. 5 is L-type fixed head three direction view, and wherein A is L-type fixed head back kidney slot, and B is L-type fixed head bottom circular aperture.
Fig. 6 is contiguous block and universal wheel johning knot composition, contiguous block 6 is connected with universal wheel 7 by four bolts, in loading procedure, the universal wheel rotation along with the rotation of turntable on the one hand, can adjust automatically around the Z axis anglec of rotation on the other hand, avoid charger interference by other direction force in loading procedure.
Fig. 7 is pressure transducer 5, contiguous block 6 and universal wheel 7 syndeton schematic diagram, two baffle plates are arranged at contiguous block 6 top, be stuck in the middle of two baffle plates bottom pressure transducer 5, and by hexagon socket head cap screw, pressure transducer 5 and contiguous block 6 are fixed, when preventing loading experiment like this, cause loosening between pressure transducer 5 and contiguous block 6 by the rotation of turntable; Contiguous block bottom is connected with universal wheel 7 by the bolt on four angles.
Claims (2)
1. a static pressure turntable unbalance loading experiment charger, this device comprises bracing frame, L-type fixed head, hydraulic cylinder, hydraulic cylinder joint, pressure transducer, contiguous block, universal wheel, flat board and turntable; Bracing frame comprises four mullions, two symmetrical crossbeams of across, and four mullions are fixed on around turntable by foot bolt; Kidney slot A is opened at the back of L-type fixed head, is fixed on the crossbeam of bracing frame with bolt by L-type plate, and the bottom opening B of L-type plate, is fixed together hydraulic cylinder and L-type plate by bolt simultaneously; Crossbeam is at least opened the two rows bolt hole adjusted for loading position at regular intervals; The two ends of hydraulic cylinder joint adopt externally threaded form, and one end is connected with hydraulic cylinder, and one end is connected with pressure transducer in addition, together with being secured to hydraulic cylinder by pressure transducer; Threaded hole is all left in the upper and lower two ends of pressure transducer, and upper end is connected with hydraulic cylinder by hydraulic cylinder joint, and lower end is connected with universal wheel by contiguous block; The dull and stereotyped roller track as universal wheel is fixed on turntable table top.
2. static pressure turntable unbalance loading experiment charger according to claim 1, it is characterized in that, pressure transducer is S type pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210537478.9A CN103048126B (en) | 2012-12-12 | 2012-12-12 | Loading device for load-unbalance experiment of static-pressure rotary table |
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| CN201210537478.9A CN103048126B (en) | 2012-12-12 | 2012-12-12 | Loading device for load-unbalance experiment of static-pressure rotary table |
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| CN103048126B true CN103048126B (en) | 2015-07-22 |
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| CN105675194B (en) * | 2016-01-11 | 2018-11-02 | 徐州市计量检定测试中心 | Pressure testing machine eccentricity test sensor and its test method |
| CN106767482A (en) * | 2017-01-08 | 2017-05-31 | 北京工业大学 | A kind of miniature precision static pressure laboratory bench top device for detecting deformation |
| CN108896393A (en) * | 2018-07-10 | 2018-11-27 | 福州大学 | The assembly type bias loading device and working method of eccentricity can arbitrarily be adjusted |
| CN110940541A (en) * | 2019-12-27 | 2020-03-31 | 杜纯 | Beam type structure field load simulation experiment detection device and detection method thereof |
| CN117405330B (en) * | 2023-10-25 | 2024-06-04 | 湖北新火炬科技有限公司 | Bearing operability verification test bed and bearing operability verification test method |
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| CN102147320A (en) * | 2011-02-28 | 2011-08-10 | 西安理工大学 | Method and device for testing axial rigidity and radial rigidity of rotary hydrostatic guide rail |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3882720A (en) * | 1973-12-17 | 1975-05-13 | Illinois Tool Works | Gear checking machine having a frictionally driven support table and position encoder |
| CN101813542A (en) * | 2010-04-23 | 2010-08-25 | 哈尔滨工业大学 | Device and method for automatically adjusting loaded mass center of platform surface of single-shaft air floatation rotating platform |
| CN101900627A (en) * | 2010-08-10 | 2010-12-01 | 哈尔滨工业大学 | Device and method for automatically adjusting center of mass after applying load to triaxial air-bearing turntable board |
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Inventor after: Wang Yida Inventor after: Wang Jianhua Inventor after: Zhao Yongsheng Inventor after: Cai Ligang Inventor after: Liu Zhifeng Inventor before: Wang Jianhua Inventor before: Wang Yida Inventor before: Zhao Yongsheng Inventor before: Cai Ligang Inventor before: Liu Zhifeng |
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Free format text: CORRECT: INVENTOR; FROM: WANG JIANHUA WANG YIDA ZHAO YONGSHENG CAI LIGANG LIU ZHIFENG TO: WANG YIDAWANG JIANHUA ZHAO YONGSHENG CAI LIGANG LIU ZHIFENG |
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