CN102692320B - Load controllable active type follow-up force-applying linear guide rail pair test bed - Google Patents
Load controllable active type follow-up force-applying linear guide rail pair test bed Download PDFInfo
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- CN102692320B CN102692320B CN201210191731.XA CN201210191731A CN102692320B CN 102692320 B CN102692320 B CN 102692320B CN 201210191731 A CN201210191731 A CN 201210191731A CN 102692320 B CN102692320 B CN 102692320B
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Abstract
The invention relates to a load controllable active type follow-up force-applying linear guide rail pair test bed. Force-applying heads (force-applying points) of a transverse loading mechanism and a vertical loading mechanism independently use or share a lead screw driving mechanism so that the transverse loading mechanism and the vertical loading mechanism move synchronously along with a stressed sliding table and the force-applying points are relatively stationary with four guide rail sliding blocks. Therefore, loads applied by a force-applying device can be uniformly and invariably acted on the four guide rail sliding blocks. The load born by each guide rail sliding block is 1/4 of that applied by the fore-applying device, namely, change curves of the loads born by the guide rail sliding blocks are completely consistent with the change curves of force applied by the force-applying device, only the amplitude is reduced to 1/4. Therefore, when the load controllable active type follow-up force-applying linear guide rail pair test bed is used for carrying out a performance and service life test on the linear guide rail pair, the load applied can be conveniently, precisely and reliably controlled so as to relatively accurately and reliably evaluate a relationship among the load, the performance and service life of the linear guide rail pair, thus providing a relatively reliable test basis for design and maintenance of the guide rail pair.
Description
Technical field
The present invention relates to the controlled active servo-actuated application of force line slideway auxiliary testing table of a kind of load.
Background technology
Line slideway auxiliary is the conventional guiding parts of mechanical system, in various machinery and equipment, is widely used.The transverse load that its performance and life-span mainly bear with guide rail slide block and radially (perpendicular to guide rail front) load is relevant.Running status by line slideway auxiliary test unit simulation guideway under specific load can evaluate performance and the life-span of guideway, is conducive to set up rationally effectively maintenance schedule, saves a large amount of maintenance costs.Existing line slideway auxiliary test unit, No. 201110321929.0 patented claims " a kind of reconfigurable lead screw pair, guideway accelerated aging electro-hydraulic servo testing platform " of having applied for as applicant drive stressed slide unit to move forward and backward by leading screw driving mechanism, stressed slide unit drives four guide rail slide blocks that are fixed on its lower surface to slide on two guide rails, to simulate the operational process of guideway; Apply transverse load by the side of stressed slide unit to four guide rail slide blocks by the horizontal load maintainer being fixed on support, apply radial load by stressed slide unit to four guide rail slide blocks by vertical (radially) load maintainer being fixed on the portal frame of support.This device can go out guideway in the performance and the life-span that apply in different transverse loads and radial load situation by test assessment.But because the point of application of its horizontal load maintainer and Plumb load mechanism is fixed, do not move with the motion of stressed slide unit; And during when test, stressed slide unit was always kept in motion, the relative distance of the fixing point of application and four guide rail slide blocks changes, thereby the load of distributing to four guide rail slide blocks by stressed slide unit is non-constant, and be subject to the impact of relative distance, stressed slide unit sliding speed, it changes complicated, is difficult to quantitative forecast.Also be the inconvenient accurately control of load that horizontal load maintainer and Plumb load mechanism impose on four guide rail slide blocks.Thereby test unit cannot evaluate load and guideway performance and the relation between the life-span accurately, reliably.
Summary of the invention
The object of this invention is to provide the controlled active servo-actuated application of force line slideway auxiliary testing table of a kind of load, the controlled dynamic that the mode of the active servo-actuated application of force that adopts this testing table realizes guide rail slide block transverse load and radial load loads, can evaluate more accurately, reliably load and guideway performance and the relation between the life-span, for design and the maintenance of guideway provide more reliable test basis.
The present invention solves the first technical scheme that its technical matters adopts: the active servo-actuated application of force line slideway auxiliary testing table that a kind of load is controlled, comprise that the bottom surface that leading screw driving mechanism on support, support, two guide rails are installed on respectively the both sides of leading screw driving mechanism, stressed slide unit is connected with leading screw driving mechanism, four angles of stressed slide unit bottom surface are corresponding connected with four guide rail slide blocks, and in four guide rail slide blocks, every two form guideway with corresponding guide rail; The lower surface of stressed slide unit is also connected with grating ruler reading head, and this grating ruler reading head coordinates with the grating scale main scale being fixed on support, and the side of stressed slide unit has horizontal load maintainer, top to have Plumb load mechanism; It is characterized in that:
The formation of described horizontal load maintainer is: laterally force application apparatus is connected with horizontal application of force head by horizontal pull pressure sensor, the laterally just longitudinal center to stressed slide unit side of application of force head, laterally the base of force application apparatus is installed on support by horizontal force application apparatus leading screw driving mechanism, this base is connected with horizontal force application apparatus grating ruler reading head, and laterally force application apparatus grating ruler reading head coordinates with the horizontal force application apparatus grating scale main scale being fixed on support;
The formation of described Plumb load mechanism is: vertical force application apparatus is connected with vertical application of force head by vertical pull pressure sensor, vertical application of force head be positioned at stressed slide unit center directly over, vertical force application apparatus is installed on the crossbeam of portal frame, the base on portal frame right side is installed on support by portal frame leading screw driving mechanism, the base on described right side is connected with side grating ruler reading head, and side grating ruler reading head coordinates with the side grating scale main scale being fixed on support; The base in portal frame left side is fixed on support by left side line slideway auxiliary;
Three-way vibration acceleration transducer and temperature sensor are all installed on each guide rail slide block; These sensors and grating ruler reading head are all electrically connected with data collection and control system; Leading screw driving mechanism, laterally load maintainer and Plumb load mechanism are also all electrically connected with data collection and control system.
The course of work and the principle of above-mentioned the first technical scheme are:
Leading screw driving mechanism drives stressed slide unit lengthwise movement, and the motion conditions of stressed slide unit is fed back to data collection and control system by grating ruler reading head; Laterally force application apparatus leading screw driving mechanism drives the base lengthwise movement of horizontal force application apparatus, and laterally the motion conditions of horizontal force application apparatus base is fed back to data collection and control system by force application apparatus grating ruler reading head; Portal frame leading screw driving mechanism drives the base lengthwise movement on portal frame right side, and the motion conditions of portal frame right side base is fed back to data collection and control system by side grating ruler reading head; Data collection and control system, according to the feedback signal of three grating ruler reading heads, is accurately controlled three leading screw driving mechanisms, makes stressed slide unit, laterally force application apparatus, the motion of vertical force application apparatus maintenance precise synchronization.Simultaneously, data collection and control system is according to the guide rail slide block of user's input load change curve laterally, radially, control respectively the size of the power output of horizontal load maintainer, Plumb load mechanism, laterally the power of load maintainer, the output of Plumb load mechanism acts on guide rail slide block by stressed slide unit, change by user's request thereby realize transverse load, the radial load that guide rail slide block bears, to simulate the various operating modes of guideway.
When test, data collection and control system gathers vibration signal and the temperature signal of guide rail slide block by three-way vibration acceleration transducer, temperature sensor, thereby obtain assessing load and guideway performance and the required test figure of relation between the life-span, for design and the maintenance of guideway provide test basis more reliably.
The present invention solves the second technical scheme that its technical matters adopts: the active servo-actuated application of force line slideway auxiliary testing table that a kind of load is controlled, comprise that the bottom surface that leading screw driving mechanism on support, support, two guide rails are installed on respectively the both sides of leading screw driving mechanism, stressed slide unit is connected with leading screw driving mechanism, four angles of stressed slide unit bottom surface are corresponding connected with four guide rail slide blocks, and in four guide rail slide blocks, every two form guideway with corresponding guide rail; The lower surface of stressed slide unit is also connected with grating ruler reading head, and this grating ruler reading head coordinates with the grating main scale being fixed on support, and the side of stressed slide unit has horizontal load maintainer, top to have Plumb load mechanism; It is characterized in that:
The formation of described horizontal load maintainer is: laterally force application apparatus is connected with horizontal application of force head by horizontal pull pressure sensor, the laterally just longitudinal center to stressed slide unit side of application of force head, laterally the base of force application apparatus is installed on support by horizontal force application apparatus leading screw driving mechanism, this base is connected with horizontal force application apparatus grating ruler reading head, and laterally force application apparatus grating ruler reading head coordinates with the horizontal force application apparatus grating scale main scale being fixed on support;
The formation of described Plumb load mechanism is: vertical force application apparatus is connected with vertical application of force head by vertical pull pressure sensor, vertical application of force head be positioned at stressed slide unit center directly over, vertical force application apparatus is installed on the crossbeam of portal frame, the base on portal frame right side is fixed on support by right side line slideway auxiliary, and the left side of portal frame is connected with the base of horizontal force application apparatus;
Three-way vibration acceleration transducer and temperature sensor are all installed on each guide rail slide block; These sensors and grating ruler reading head are all electrically connected with data collection and control system; Leading screw driving mechanism, laterally load maintainer and Plumb load mechanism are also all electrically connected with data collection and control system.
The course of work and the principle of above-mentioned the second technical scheme are:
Leading screw driving mechanism drives stressed slide unit lengthwise movement, and the motion conditions of stressed slide unit is fed back to data collection and control system by grating ruler reading head; Laterally force application apparatus leading screw driving mechanism drives the base lengthwise movement of horizontal force application apparatus, drive the portal frame lengthwise movement being connected with this base simultaneously, laterally the motion conditions of horizontal force application apparatus base is fed back to data collection and control system by force application apparatus grating ruler reading head, data collection and control system is according to the feedback signal of two grating ruler reading heads, control two leading screw driving mechanisms, make stressed slide unit, laterally force application apparatus and vertical force application apparatus keep precise synchronization motion.Simultaneously, data collection and control system is according to the guide rail slide block of user's input load change curve laterally, radially, control respectively the size of the power output of horizontal load maintainer, Plumb load mechanism, laterally the power of load maintainer, the output of Plumb load mechanism acts on guide rail slide block by stressed slide unit, change by user's request thereby realize transverse load, the radial load that guide rail slide block bears, to simulate the various operating modes of guideway.
When test, data collection and control system gathers vibration signal and the temperature signal of guide rail slide block by three-way vibration acceleration transducer, temperature sensor, thereby obtain assessing load and guideway performance and the required test figure of relation between the life-span, for design and the maintenance of guideway provide test basis more reliably.
Compared with prior art, the invention has the beneficial effects as follows:
One, two schemes of the present invention is in the time testing, and laterally the application of force head (point of application) of load maintainer and Plumb load mechanism is all synchronized with the movement with stressed slide unit, and the point of application is relative static with four guide rail slide blocks; Thereby the load that force application apparatus applies constant acting on four guide rail slide blocks uniformly, the load that each guide rail slide block bears is 1/4 of force application apparatus imposed load, also being that the load change curve that bears of guide rail slide block is in full accord with the application of force change curve of force application apparatus, is only that amplitude narrows down to 1/4.Therefore, apparatus of the present invention are in the time carrying out the performance of line slideway auxiliary and durability test, can realize very easily imposed load accurately, reliably control, thereby can evaluate more accurately, reliably load and guideway performance and the relation between the life-span, for design and the maintenance of guideway provide more reliable test basis.
Two, the horizontal load maintainer of the first technical scheme of the present invention, a leading screw driving mechanism of the each employing of Plumb load mechanism, structure is comparatively complicated, but control accuracy is high, and the power requirement of the leading screw driving mechanism to horizontal load maintainer, Plumb load mechanism is low; Horizontal load maintainer, the Plumb load mechanism of the second technical scheme share a leading screw driving mechanism, and it is simple in structure, but high to the power requirement of this leading screw driving mechanism.Two schemes is applicable to respectively the different occasions that require, make of the present invention practical, easier promotion and implementation.
Horizontal force application apparatus side line slideway auxiliary is installed between the base of the horizontal force application apparatus of above-mentioned the first technical scheme and support, right side line slideway auxiliary is installed between the base on portal frame right side and support.
Adopt the guide piece of line slideway auxiliary as horizontal force application apparatus and portal frame, make the walking of horizontal force application apparatus and portal frame more reliable and more stable, also more easily obtain higher positioning precision and walking precision; The wearing and tearing of line slideway auxiliary are very little, can long term maintenance high precision.
Horizontal force application apparatus side line slideway auxiliary is installed between the base of the horizontal force application apparatus of above-mentioned the second technical scheme and support.
Adopt the guide piece of line slideway auxiliary as the base of horizontal force application apparatus, also make the walking of horizontal force application apparatus and portal frame more reliable and more stable, easily obtain higher positioning precision and walking precision; The wearing and tearing of line slideway auxiliary are very little, can long term maintenance high precision.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention one;
Fig. 2 is the structural representation of the embodiment of the present invention two;
Embodiment
Embodiment mono-
Fig. 1 illustrates, the first embodiment of the present invention is, the active servo-actuated application of force line slideway auxiliary testing table that a kind of load is controlled, and its composition is:
Leading screw driving mechanism on support 1, support 12, two guide rails 3 are installed on respectively the both sides of leading screw driving mechanism 2, the bottom surface of stressed slide unit 4 is connected with leading screw driving mechanism 2, four angles of stressed slide unit 4 bottom surfaces are corresponding connected with four guide rail slide blocks 5, and in four guide rail slide blocks 5, every two form guideway with corresponding guide rail 3; The lower surface of stressed slide unit 4 is also connected with grating ruler reading head 19, and this grating ruler reading head 19 coordinates with the grating scale main scale 25 being fixed on support 1, and the side of stressed slide unit 4 has horizontal load maintainer, top to have Plumb load mechanism.
The formation of described horizontal load maintainer is: laterally force application apparatus 12 is connected by horizontal pull pressure sensor 13 and the horizontal application of force 14, the laterally just longitudinal center to stressed slide unit 4 sides of the application of force 14, laterally the base 10 of force application apparatus 12 is installed on support 1 by horizontal force application apparatus leading screw driving mechanism 6, this base 10 is connected with horizontal force application apparatus grating ruler reading head, and laterally force application apparatus grating ruler reading head coordinates with the horizontal force application apparatus grating scale main scale 7 being fixed on support 1.
The formation of described Plumb load mechanism is: vertical force application apparatus 15 is connected by vertical pull pressure sensor 17 and the vertical application of force 18, the vertical application of force 18 be positioned at stressed slide unit 4 centers directly over, vertical force application apparatus 15 is installed on the crossbeam of portal frame 16, the base 21 on portal frame 16 right sides is installed on support 1 by portal frame leading screw driving mechanism 20, the base 21 on described right side is connected with side grating ruler reading head 22, and side grating ruler reading head 22 coordinates with the side grating scale main scale 24 being fixed on support 1; The base 11 in portal frame 16 left sides is fixed on support 1 by left side line slideway auxiliary 9.
On each guide rail slide block 5, three-way vibration acceleration transducer and temperature sensor are all installed; These sensors and grating ruler reading head 19 are all electrically connected with data collection and control system; Leading screw driving mechanism 2, laterally load maintainer and Plumb load mechanism are also all electrically connected with data collection and control system.
Embodiment bis-
Fig. 2 illustrates, the second embodiment of the present invention is, the active servo-actuated application of force line slideway auxiliary testing table that a kind of load is controlled, and its composition is:
Leading screw driving mechanism on support 1, support 12, two guide rails 3 are installed on respectively the both sides of leading screw driving mechanism 2, the bottom surface of stressed slide unit 4 is connected with leading screw driving mechanism 2, four angles of stressed slide unit 4 bottom surfaces are corresponding connected with four guide rail slide blocks 5, and in four guide rail slide blocks 5, every two form guideway with corresponding guide rail 3; The lower surface of stressed slide unit 4 is also connected with grating ruler reading head 19, and this grating ruler reading head 19 coordinates with the grating main scale 25 being fixed on support 1, and the side of stressed slide unit 4 has horizontal load maintainer, top to have Plumb load mechanism.
The formation of described horizontal load maintainer is: laterally force application apparatus 12 is connected by horizontal pull pressure sensor 13 and the horizontal application of force 14, the laterally just longitudinal center to stressed slide unit 4 sides of the application of force 14, laterally the base 10 ' of force application apparatus 12 is installed on support 1 by horizontal force application apparatus leading screw driving mechanism 6 ', this base 10 ' is connected with horizontal force application apparatus grating ruler reading head, and laterally force application apparatus grating ruler reading head coordinates with the horizontal force application apparatus grating scale main scale 7 being fixed on support 1.
The formation of described Plumb load mechanism is: vertical force application apparatus 15 is connected by vertical pull pressure sensor 17 and the vertical application of force 18, the vertical application of force 18 be positioned at stressed slide unit 4 centers directly over, vertical force application apparatus 15 is installed on the crossbeam of portal frame 16 ', the base 21 on portal frame 16 ' right side is fixed on support 1 by right side line slideway auxiliary 23 ', and the left side of portal frame 16 ' is connected with the base 10 ' of horizontal force application apparatus 12.
On each guide rail slide block 5, three-way vibration acceleration transducer and temperature sensor are all installed; These sensors and grating ruler reading head 19 are all electrically connected with data collection and control system; Leading screw driving mechanism 2, laterally load maintainer and Plumb load mechanism are also all electrically connected with data collection and control system.
Horizontal force application apparatus of the present invention and vertical force application apparatus can be existing various force application apparatus, as hydraulic cylinder, cylinder, electric cylinder etc.The leading screw driving mechanism that the present invention adopts can be existing various leading screw driving mechanism, as motor-driven screw mechanism.
Claims (4)
1. the active servo-actuated application of force line slideway auxiliary testing table that load is controlled, comprise that the bottom surface that leading screw driving mechanism (2), two guide rails (3) on support (1), support (1) are installed on respectively the both sides of leading screw driving mechanism (2), stressed slide unit (4) is connected with leading screw driving mechanism (2), be connected corresponding with four guide rail slide blocks (5) of four angles of stressed slide unit (4) bottom surface, in four guide rail slide blocks (5), every two form guideway with corresponding guide rail (3); The lower surface of stressed slide unit (4) is also connected with grating ruler reading head (19), this grating ruler reading head (19) coordinates with the grating scale main scale (25) being fixed on support (1), and the side of stressed slide unit (4) has horizontal load maintainer, top to have Plumb load mechanism; It is characterized in that:
The formation of described horizontal load maintainer is: laterally force application apparatus (12) is connected with horizontal application of force head (14) by horizontal pull pressure sensor (13), the laterally just longitudinal center to stressed slide unit (4) side of application of force head (14), laterally the base (10) of force application apparatus (12) is installed on support (1) by horizontal force application apparatus leading screw driving mechanism (6), this base (10) is connected with horizontal force application apparatus grating ruler reading head, laterally force application apparatus grating ruler reading head coordinates with the horizontal force application apparatus grating scale main scale (7) being fixed on support (1),
The formation of described Plumb load mechanism is: vertical force application apparatus (15) is connected with vertical application of force head (18) by vertical pull pressure sensor (17), vertical application of force head (18) be positioned at stressed slide unit (4) center directly over, vertical force application apparatus (15) is installed on the crossbeam of portal frame (16), the base (21) on portal frame (16) right side is installed on support (1) by portal frame leading screw driving mechanism (20), the base (21) on described right side is connected with side grating ruler reading head (22), side grating ruler reading head (22) coordinates with the side grating scale main scale (24) being fixed on support (1), the base (11) in portal frame (16) left side is fixed on support (1) by left side line slideway auxiliary (9),
Each guide rail slide block is all provided with three-way vibration acceleration transducer and temperature sensor on (5); These sensors and grating ruler reading head (19) are all electrically connected with data collection and control system; Leading screw driving mechanism (2), laterally load maintainer and Plumb load mechanism are also all electrically connected with data collection and control system.
2. the controlled active servo-actuated application of force line slideway auxiliary testing table of a kind of load according to claim 1, it is characterized in that: between the base (10) of described horizontal force application apparatus (12) and support (1), horizontal force application apparatus side line slideway auxiliary (8) is installed, between the base (21) on portal frame right side and support (1), right side line slideway auxiliary (23) is installed.
3. the active servo-actuated application of force line slideway auxiliary testing table that load is controlled, comprise that the bottom surface that leading screw driving mechanism (2), two guide rails (3) on support (1), support (1) are installed on respectively the both sides of leading screw driving mechanism (2), stressed slide unit (4) is connected with leading screw driving mechanism (2), be connected corresponding with four guide rail slide blocks (5) of four angles of stressed slide unit (4) bottom surface, in four guide rail slide blocks (5), every two form guideway with corresponding guide rail (3); The lower surface of stressed slide unit (4) is also connected with grating ruler reading head (19), this grating ruler reading head (19) coordinates with the grating main scale (25) being fixed on support (1), and the side of stressed slide unit (4) has horizontal load maintainer, top to have Plumb load mechanism; It is characterized in that:
The formation of described horizontal load maintainer is: laterally force application apparatus (12) is connected with horizontal application of force head (14) by horizontal pull pressure sensor (13), the laterally just longitudinal center to stressed slide unit (4) side of application of force head (14), laterally the base (10 ') of force application apparatus (12) is installed on support (1) by horizontal force application apparatus leading screw driving mechanism (6 '), this base (10 ') is connected with horizontal force application apparatus grating ruler reading head, laterally force application apparatus grating ruler reading head coordinates with the horizontal force application apparatus grating scale main scale (7) being fixed on support (1),
The formation of described Plumb load mechanism is: vertical force application apparatus (15) is connected with vertical application of force head (18) by vertical pull pressure sensor (17), vertical application of force head (18) be positioned at stressed slide unit (4) center directly over, vertical force application apparatus (15) is installed on the crossbeam of portal frame (16 '), the base (21) on portal frame (16 ') right side is fixed on support (1) by right side line slideway auxiliary (23 '), the left side of portal frame (16 ') is connected with the base (10 ') of horizontal force application apparatus (12),
Each guide rail slide block is all provided with three-way vibration acceleration transducer and temperature sensor on (5); These sensors and grating ruler reading head (19) are all electrically connected with data collection and control system; Leading screw driving mechanism (2), laterally load maintainer and Plumb load mechanism are also all electrically connected with data collection and control system.
4. the controlled active servo-actuated application of force line slideway auxiliary testing table of a kind of load according to claim 3, is characterized in that: between the base (10 ') of described horizontal force application apparatus (12) and support (1), horizontal force application apparatus side line slideway auxiliary (8 ') is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210191731.XA CN102692320B (en) | 2012-06-12 | 2012-06-12 | Load controllable active type follow-up force-applying linear guide rail pair test bed |
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|---|---|---|---|
| CN201210191731.XA CN102692320B (en) | 2012-06-12 | 2012-06-12 | Load controllable active type follow-up force-applying linear guide rail pair test bed |
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| CN102692320A CN102692320A (en) | 2012-09-26 |
| CN102692320B true CN102692320B (en) | 2014-08-06 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998116B (en) * | 2012-12-03 | 2015-02-25 | 南京理工大学 | Device and method for testing reliability of rolling linear guide track pair |
| CN103983437B (en) * | 2014-03-07 | 2017-07-14 | 沈阳理工大学 | Lathe Rolling Components precision stability measurement apparatus |
| CN104165765B (en) * | 2014-08-30 | 2017-02-22 | 北京工业大学 | Acceleration performance degradation testing method for linear feeding unit |
| CN109425481A (en) * | 2017-08-25 | 2019-03-05 | 南京雄豹精密机械有限公司 | A kind of linear rolling guide Reliability Test Instrument and its test method |
| CN107631865B (en) * | 2017-08-31 | 2020-01-31 | 六禾(厦门)智能科技有限公司 | intelligent test bed for power equipment |
| CN108896390A (en) * | 2018-04-19 | 2018-11-27 | 北京航空航天大学 | A kind of minute yardstick double-shaft two-way loading tester |
| CN109765062B (en) * | 2019-01-21 | 2020-10-09 | 石家庄铁道大学 | Test bed for testing dynamic performance of vehicle suspension plate spring |
| CN114046992A (en) * | 2021-10-11 | 2022-02-15 | 国家机床质量监督检验中心 | 2-axis linkage workbench flexible comprehensive loading reliability test bed |
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