CN103076137B - Build-up force standard machine capable of automatically centering - Google Patents
Build-up force standard machine capable of automatically centering Download PDFInfo
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- CN103076137B CN103076137B CN201110329559.5A CN201110329559A CN103076137B CN 103076137 B CN103076137 B CN 103076137B CN 201110329559 A CN201110329559 A CN 201110329559A CN 103076137 B CN103076137 B CN 103076137B
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Abstract
The invention belongs to an automatic centering technology and particularly discloses a build-up force standard machine capable of automatically centering. The build-up force standard machine comprises an upper bedplate and a lower bedplate; a piston, an oil cylinder and a standard sensor are arranged on the upper bedplate; an upper pulling plate and a moving beam are arranged between the upper bedplate and the lower bedplate; the upper pulling plate is connected to the upper ends of two parallel screw rods by screw threads; the moving beam is connected to the middle parts of the screw rods by screw threads; and the lower ends of the screw rods are provided with compression working tables. By the structure design of the compression working tables, a correction sensor is placed on the compression working tables, so that automatic centering of a measured sensor is completed, a gravity line of the measured sensor is enabled to be coincided with the center of the standard sensor and an error generated when the build-up force standard machine is utilized to measure the measured sensor is reduced. Performance of the build-up force standard machine is further improved.
Description
Technical field
The invention belongs to self-centering technology, be specifically related to a kind of superposing type force standard machine.
Background technology
Progress along with High Precision Strength Measurement Sensor technology, and the raising of hydraulic control technology, adopt (or one group) standard transducer as standard, connect with detected sensor, with hydraulic pressure or mechanical system imposed load, to determine that the superposing type force standard machine of detected sensor force value parameter has started to be used widely.
Common superposing type force standard machine is mainly to utilize oil cylinder and piston to load standard transducer and tested sensor simultaneously, both bear same load, the size of load is determined by the output of standard transducer, when output reaches a certain proof force value, the output of stablizing this power value and recording tested sensor.
Yet the stress surface of power sensor is generally convex surface, high-precision proof force sensor particularly, and be plane with the supporting pressure cap of high precision standard transducer.The prerequisite of superposing type force standard machine is that tested power sensor and proof force sensor bear same load under the effect of hydraulic cylinder plug system.Due to power sensor is structurally symmetrical, the center of gravity line of sensor can be similar to the line of symmetry of thinking sensor, but superposing type force standard machine be difficult to guarantee loading frame and by the center of gravity of the center of gravity of school sensor and standard transducer on a vertical curve, this may cause the direction run-off the straight of standard transducer and tested sensor power when cylinder plug systemic effect, make the load of standard transducer and tested sensor inconsistent, affect the accuracy of superposing type force standard machine.
Summary of the invention
The object of the present invention is to provide a kind of high-precision, can self centering superposing type force standard machine.
Technical scheme of the present invention is as follows:
Can a self centering superposing type force standard machine, it comprises upper platen and lower platen, and described upper platen is provided with oil cylinder, is provided with piston in oil cylinder, and described piston is provided with standard transducer; On described upper platen, be fixed with upper backup pad, the standard transducer on described piston contacts with the lower surface of this back up pad; Between described upper platen and lower platen, be provided with arm-tie and moving crossbeam, upper arm-tie center is fixed with upper connecting rod, and moving crossbeam center is fixed with lower link, and described lower link and upper connecting rod coaxial; Described upper arm-tie is threaded connection in the upper end of two parallel leading screws, and described moving crossbeam is threaded connection the middle part at above-mentioned leading screw; The lower end of described leading screw is provided with and presses to worktable; This presses to worktable and comprises main body panel, which is provided with disk installing plate, and described disk installing plate and main body panel are provided with manhole, put and be provided with cylindrical rod in manhole.
Above-mentioned a kind of can self centering superposing type force standard machine in: four jiaos of described upper arm-tie are respectively equipped with lower connecting rod, and the lower end of lower connecting rod is through pressing to the main body panel of worktable, and are fixed on described lower platen.
Above-mentioned a kind of can self centering superposing type force standard machine in: on described lower platen, be provided with tapered cylinder groove, described lower connecting rod is arranged in above-mentioned tapered cylinder groove by tapered cylinder pin.
Above-mentioned a kind of can self centering superposing type force standard machine in: between described upper platen and lower platen, be provided with column.
Above-mentioned a kind of can self centering superposing type force standard machine in: described cylindrical rod adopts No. 45 steel to make.
Above-mentioned a kind of can self centering superposing type force standard machine in: described manhole is 19～37.
Remarkable result of the present invention is: by pressing to the structural design of worktable, school sensor is placed on and presses to worktable, make tested sensor complete self-centering, guarantee the gravity vertical of tested sensor and the center superposition of standard transducer, reduce the error while utilizing superposing type force standard machine to measure tested sensor.Further improve precision and the performance of superposing type force standard machine.
Accompanying drawing explanation
Fig. 1 be of the present invention can self centering superposing type force standard machine structural representation;
Fig. 2 is for pressing to worktable schematic diagram;
In figure: 1. upper backup pad; 2. standard transducer; 3. piston; 4. oil cylinder; 5. upper connecting rod; 6. upper platen; 7. go up arm-tie; 8. upper connecting rod; 9. lower connecting rod; 10. lower link; 11. columns; 12. screw mandrels; 13. press to worktable; 14. cylindrical rods; 15. lower platens; 16. taper locating slots; 17. conical dowel pins; 18. manholes; 19. moving crossbeams; 20. disk installing plates; 21. main body panel.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 1, in the upper end of two screw mandrels that are parallel to each other 12, arm-tie 7 on is installed by screw thread, the center of upper arm-tie 7 is installed with a upper connecting rod 8.At these two rhizoids thick stick, 12 middle parts, by screw thread, a moving crossbeam 19 is installed, and at a lower link 10 of moving crossbeam 19 center fixed installation, this lower link 10 and above-mentioned upper connecting rod 8 are coaxial.
After upper arm-tie 7 and moving crossbeam 19 are installed with leading screw 12 respectively, four lower connecting rods, 9 lower ends are installed to one and press to worktable 13, and these both sides that press to worktable 13 are processed with semi-circular groove, two above-mentioned rhizoid thick sticks 12 press to the semi-circular groove of worktable 13 both sides through this respectively.In above-mentioned these four lower connecting rods, 9 Russia upper ends, be fixedly mounted on arm-tie 7.
At described upper arm-tie 7, moving crossbeam 19 with press to worktable 13 between upper platen 6 and lower platen 15, and by these four lower connecting rods 9, upper arm-tie 7 is fixedly connected with upper platen 6, the lower end of lower connecting rod 9 is fixedly mounted on the surface of lower platen 15 simultaneously.
Four upper connecting rods 5 are installed on upper platen 6, and the lower end of minute connecting link 5 is through upper platen 6, and passes above-mentioned upper arm-tie 7.In order to make to support firmly between upper platen 6 and lower platen 15, between upper platen 6 and lower platen 15, fixedly mounted four root posts 11, thereby made to support more firm.
The upper end of described upper connecting rod 5 is installed with upper backup pad 1.Between upper platen 6 and upper backup pad 1, the center of above-mentioned upper platen 6 is installed with oil cylinder 4, and piston 3 is installed in oil cylinder 4, and a standard transducer 2 is installed on piston, this standard transducer 2 contacts with the lower surface of upper backup pad 1.
As shown in Figure 2 press to worktable schematic diagram, the described worktable that presses to comprises a main body panel 21, fixedly mount a disk installing plate 20 thereon, in this disk installing plate 20 and main body panel 21, be processed with some manholes 18, in the middle of the present embodiment, manhole 18 is processed with 19.At cylindrical rod 14 of the interior placement of each manhole 18, this cylindrical rod 14 is to make with No. 45 steel.
As shown in Figure 2, for the loading frame that upper support beam 1, upper connecting rod 5, upper arm-tie 7, lower connecting rod 9, disk installing plate 20 and main body panel 21 are formed, in to the process of tested sensor, position immobilizes, at the upper surface of lower platen 15, install on the position of lower connecting rod 9 and be processed with taper locating slot 16, and by conical dowel pin 17 and this taper locating slot 16, the lower end of upper connecting rod 9 is installed and fixed with lower platen 15.
After upper support beam 1, upper connecting rod 5, upper arm-tie 7, lower connecting rod 9, disk installing plate 20 and main body panel 21 connect, utilize hydraulic control system to refuel to oil cylinder 4, under the effect of oil pressure, piston 3 is by standard transducer 2 jack-up.When standard transducer contacts back piston 3 with upper support beam when, by upper support beam 1, upper connecting rod 5, upper arm-tie 7, lower connecting rod 9, disk installing plate 20 and main body panel 21 jack-up, because the top of standard transducer 2 is convex, Action of Gravity Field under, upper support beam 1, upper connecting rod 5, upper arm-tie 7, lower connecting rod 9, the framework that disk installing plate 20 and main body panel 21 form and tested sensor tilt to the centerline direction of standard transducer 2, and to oil cylinder 4 emptyings, now standard transducer 2, upper support beam 1, upper connecting rod 5, upper arm-tie 7, lower connecting rod 9, disk installing plate 20 and main body panel 21 will decline, and in the process of decline, first the bottom of inclination will touch lower platen 15, after falling completely, and upper support beam 1, upper connecting rod 5, upper arm-tie 7, lower connecting rod 9, the center of gravity of the framework that disk installing plate 20 and main body panel 21 form is by the center closer to standard transducer, repeat after this process 3-6 time, determine position, and at the upper surface of lower platen 15, install on the position of lower connecting rod 9 and process taper locating slot 16, by conical dowel pin 17 and this taper locating slot 16, the lower end of upper connecting rod 9 is installed and fixed with lower platen 15.Determine the center of gravity of framework and the center superposition at sensor center that upper support beam 1, upper connecting rod 5, upper arm-tie 7, lower connecting rod 9, disk installing plate 20 and main body panel 21 form.
Tested sensor is positioned on cylindrical rod 14, utilizes hydraulic control system to refuel to oil cylinder 4, under the effect of oil pressure, piston 3 is standard transducer 2 jack-up, when standard transducer contacts back piston 3 with upper support beam when, and upper support beam 1, upper connecting rod 5, upper arm-tie 7, lower connecting rod 9, conical dowel pin 17, disk installing plate 20 and main body panel 21 jack-up, conical dowel pin 17 will depart from taper locating slot 16, along with the distance of jack-up is increasing, disk installing plate holds up the top that rose cylindrical rod 14 by tested sensor, now the deviation of gravity center of tested sensor the center of standard transducer, because the top of standard transducer 2 is convex, under the Action of Gravity Field of tested sensor, upper support beam 1, upper connecting rod 5, upper arm-tie 7, lower connecting rod 9, conical dowel pin 17, the framework that disk installing plate 20 and main body panel 21 form and tested sensor tilt to the centerline direction of standard transducer 2, and after tested sensor is held up completely by disk installing plate 20, to oil cylinder 4 emptyings, now standard transducer 2, upper support beam 1, upper connecting rod 5, upper arm-tie 7, lower connecting rod 9, conical dowel pin 17, disk installing plate 20 and main body panel 21 will decline, in the process declining, first the bottom of the tested sensor of inclination will touch cylindrical rod 14, and conical dowel pin 17 will be fallen in taper locating slot 16, in this process owing to having the effect of conical dowel pin 17 location, upper support beam 1, upper connecting rod 5, upper arm-tie 7, lower connecting rod 9, conical dowel pin 17, the position of disk installing plate 20 and main body panel 21 can not change, and tested sensor is progressively drawn close to the center of standard transducer 2, repeats, after this process 3-6 time, will to complete the centering of tested sensor.
Claims (4)
- One kind can self centering superposing type force standard machine, it comprises upper platen (6) and lower platen (15), described upper platen (6) is provided with oil cylinder (4), in oil cylinder (4), be provided with piston (3), described piston (3) is provided with standard transducer (2); On described upper platen (6), be fixed with upper backup pad (1), the standard transducer (2) on described piston (3) contacts with the lower surface of this back up pad (1); It is characterized in that: between described upper platen (6) and lower platen (15), be provided with arm-tie 7 and moving crossbeam (19), upper arm-tie (7) center is fixed with upper connecting rod (8), moving crossbeam (19) center is fixed with lower link (10), and described lower link (10) and upper connecting rod (8) are coaxially; Described upper arm-tie (7) is threaded connection in the upper end of two parallel leading screws (12), and described moving crossbeam (19) is threaded connection the middle part in above-mentioned leading screw (12); The lower end of described leading screw (12) is provided with and presses to worktable (13); This presses to worktable (13) and comprises main body panel (21), which is provided with disk installing plate (20), described disk installing plate (20) and main body panel (21) are provided with manhole (18), put and be provided with cylindrical rod (14) in manhole (18); Four jiaos of described upper arm-tie (7) are respectively equipped with lower connecting rod (9), and the lower end of lower connecting rod (9) is through pressing to the main body panel (21) of worktable (13), and the lower platen (15) described in being fixed on; Described lower platen (15) is provided with tapered cylinder groove (16), and described lower connecting rod (9) is arranged in above-mentioned tapered cylinder groove (16) by tapered cylinder pin (17).
- As claimed in claim 1 a kind of can self centering superposing type force standard machine, it is characterized in that: between described upper platen (6) and lower platen (15), be provided with column (11).
- As claimed in claim 1 a kind of can self centering superposing type force standard machine, it is characterized in that: described cylindrical rod (14) adopts No. 45 steel to make.
- As claimed in claim 1 a kind of can self centering superposing type force standard machine, it is characterized in that: described manhole (18) is 19～37.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110329559.5A CN103076137B (en) | 2011-10-26 | 2011-10-26 | Build-up force standard machine capable of automatically centering |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110329559.5A CN103076137B (en) | 2011-10-26 | 2011-10-26 | Build-up force standard machine capable of automatically centering |
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| Publication Number | Publication Date |
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| CN103076137A CN103076137A (en) | 2013-05-01 |
| CN103076137B true CN103076137B (en) | 2014-12-10 |
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| CN201110329559.5A Active CN103076137B (en) | 2011-10-26 | 2011-10-26 | Build-up force standard machine capable of automatically centering |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105593658B (en) * | 2013-10-07 | 2019-08-20 | Mts系统公司 | Accurate force application apparatus for force snesor calibration |
| CN104807592A (en) * | 2015-05-18 | 2015-07-29 | 陶泽成 | Electric cylinder loading overlapping type force standard machine |
| CN105334113A (en) * | 2015-12-03 | 2016-02-17 | 武汉科技大学 | Hydraulic loading device for stress frozen method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR0157705B1 (en) * | 1995-11-01 | 1999-03-30 | 정명세 | Base table transferring means of real weight force standard |
| CN2755578Y (en) * | 2004-11-23 | 2006-02-01 | 沈阳仪表科学研究院 | Hydraulic comparing force standard instrument |
| CN2903952Y (en) * | 2006-05-17 | 2007-05-23 | 吉林大学 | Superimposed force standard machine |
| TWI386630B (en) * | 2008-12-04 | 2013-02-21 | Ind Tech Res Inst | Three-purpose force standard machine with independent dead-weight stack and lever arm |
| CN201688909U (en) * | 2009-12-29 | 2010-12-29 | 苏州龙盛测试设备有限公司 | Deadweight hydraulic combined type force standard machine |
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