CN204330376U - Heavy type numerical control plane milling and boring machine table feed system reliability test bench - Google Patents

Heavy type numerical control plane milling and boring machine table feed system reliability test bench Download PDF

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Publication number
CN204330376U
CN204330376U CN201520029370.8U CN201520029370U CN204330376U CN 204330376 U CN204330376 U CN 204330376U CN 201520029370 U CN201520029370 U CN 201520029370U CN 204330376 U CN204330376 U CN 204330376U
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China
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loading
worktable
servo
load
fixed
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Chinese (zh)
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杨兆军
何佳龙
李洪洲
李圳
陈菲
李国发
王继利
阚英男
杜大伟
谢群亚
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Jilin University
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Jilin University
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Abstract

The utility model belongs to heavy-duty machinery process equipment fail-test technical field, relates to heavy type numerical control plane milling and boring machine table feed system reliability test bench; Overcome the loading fail-test problem that current reliability test cannot carry out simulating to heavy digital control plane milling and boring machine table feed system actual condition, comprise balancing weight inertia and load and add assist apparatus part, X-direction loading section, Y-direction loading section, Z-direction loading section and automatic control section; X-direction loading section comprises vibrator, No. 1 pull pressure sensor, secondary load worktable, No. 1, X-direction, No. 2 load bars and cover plate; Y-direction loading section is the hydraulic loading device that two covers are identical, and Z-direction loading section comprises electro-hydraulic loading unit; Automatic control section comprises the servo controller of upper industrial computer, programmable controller PLC, vibrator controller, Y-direction servo controller, Z-direction servo controller, worktable, auxiliary table direction of motion.

Description

Heavy type numerical control plane milling and boring machine table feed system reliability test bench
Technical field
The utility model belongs to heavy-duty machinery process equipment fail-test technical field, particularly relates to a kind of heavy type numerical control plane milling and boring machine table feed system reliability test bench of simulating dynamic and static cutting load and inertial load.
Background technology
Heavy type numerical control plane milling and boring machine is widely used in all kinds of machining department, processes various plane, groove, gear etc.Configuration universal milling head, circular table, the first-class various milling machine accessory of calibration, can expand the usable range of lathe further.Its range of application becomes more and more wider, but due to heavy type numerical control plane milling and boring machine self and workpiece huge, load change greatly, the stroke feature such as greatly, easily be subject to the impact of operating mode and environment, make its faults frequent, integrity problem is serious, has become focus that lathe manufacturing enterprise and user pay close attention to and the bottleneck that heavy digital control machine tool develops.Because heavy machine tool is bulky etc., that factor carries out overall test is relatively difficult, therefore the reliability test bench of heavy machine tool key feature is researched and developed, cruelly leaked by fail-test, find out the factor affecting heavy machine tool reliability, and then take the measure improving heavy machine tool reliability level, this has very important practical significance.
In heavy type numerical control plane milling and boring machine, to compare movable gantry machining precision high for table movable type, and mainly environmental factor, especially temperature is on the impact of machining precision, and it is less that table movable type compares movable gantry.Because the research of domestic heavy type numerical control plane milling and boring machine is started late, therefore domesticly at present also reliability consideration is not carried out to the key feature of heavy digital control plane milling and boring machine, current only testing table also just carries out dry run or on-site user testing etc. to it, and the reliability test specially for heavy type numerical control plane milling and boring machine key feature is domestic almost blank.The utility model, according to the actual applying working condition of table movable type heavy type numerical control plane milling and boring machine table feed system, proposes a kind of reliability test bench with the heavy type numerical control plane milling and boring machine table feed system of simulation actual cut load and inertial load.
Summary of the invention
Technical problem to be solved in the utility model overcomes the loading fail-test problem that current reliability test cannot carry out simulating to heavy digital control plane milling and boring machine table feed system actual condition, provides a kind of heavy type numerical control plane milling and boring machine table feed system reliability test bench with the actual dynamic and static cutting load of simulation and inertial load.
For solving the problems of the technologies described above, the utility model adopts following technical scheme to realize, and accompanying drawings is as follows:
A kind of heavy type numerical control plane milling and boring machine table feed system reliability test bench, comprises balancing weight inertia and loads and add assist apparatus part, X-direction loading section, Y-direction loading section, Z-direction loading section and automatic control section;
Described balancing weight inertia loads and adds assist apparatus part and comprises balancing weight 5 and add assist apparatus; Balancing weight 5 is fixed on worktable 4, described in add assist apparatus and comprise and load worktable 8 and load guideway 6; Described loading guideway 6 is fixed on and loads worktable 8 lower surface;
Described X-direction loading section comprises vibrator 13, No. 1 pull pressure sensor 14, secondary load worktable 15, auxiliary servo motor and worm screw case 16, X-direction No. 2 load bars 40, X-direction No. 1 load bar 20 and cover plate 24; Described vibrator 13 is fixed on secondary load worktable 15; Described X-direction No. 1 load bar 20 and No. 1 pull pressure sensor 14, X-direction No. 2 load bars 40, vibrator 13 are fixedly connected sequentially; X-direction No. 2 load bars 40 are fixed on loading worktable 15 by base 25 by described cover plate 24; Described cover plate 24 is between No. 1 pull pressure sensor 14 and vibrator 13; Described auxiliary servo motor and worm screw case 16 drive auxiliary table 15 to move in X direction;
Described Y-direction loading section is the hydraulic loading device 17 that two covers are identical, is positioned at the same side loading worktable 8; Described hydraulic loading device 17 comprises electro-hydraulic loading unit, Y-direction auxiliary guide rail 28; Described electro-hydraulic loading unit comprises Y-direction load bar 19, pull pressure sensor 26, displacement transducer 35 and servo-cylinder 32; The left end of described pull pressure sensor 26 is fixedly connected with Y-direction load bar 19 right-hand member, and the right-hand member of pull pressure sensor 26 is fixedly connected with servo-cylinder 32; Institute's displacement sensors 35 is arranged on servo-cylinder 32; Described servo-cylinder 32 is fixed on the ground by Y-direction auxiliary guide rail 28;
Described Z-direction loading section comprises electro-hydraulic loading unit and Z-direction loaded seat 10; Described electro-hydraulic loading unit is fixed in Z-direction loaded seat 10;
Electro-hydraulic loading unit in described Z-direction loading section is identical with the electro-hydraulic loading cellular construction in Y-direction loading section;
Described loading worktable 8 moves up and down along Z-direction, and Z-direction load bar contacts with the upper surface loading worktable 8 and connects, and Y-direction load bar 19 contacts with loading worktable 8 side surface and connects;
Described automatic control section comprises upper industrial computer, programmable controller PLC, vibrator controller, Y-direction servo controller, Z-direction servo controller, the servo controller in working table movement direction and the servo controller of auxiliary table direction of motion;
The RS-232C port of described programmable controller PLC is electrically connected with the RS-232C port of upper industrial computer, the RS-232C port of described Y-direction servo controller is connected with the RS-232C port electric wire of upper industrial computer, the RS-232C port of described Z-direction servo controller is connected with the RS-232C port electric wire of upper industrial computer, and the RS-232C port of described vibrator controller is connected with the RS-232C port electric wire of upper industrial computer; The described RS-232C port of working table movement servocontrol instrument is electrically connected with the RS-232C port of upper industrial computer, and the described RS-232C port of auxiliary table motion servo controller is electrically connected with the RS-232C port of upper industrial computer.
X-direction loading section described in technical scheme also comprises X-direction and loads seat 21, X-direction loading flap 22, No. 1 bearing pin 23;
Described X-direction loads seat 21 and is fixed on worktable 4; The upper surface that X-direction loads seat 21 is provided with a semicircle groove;
Described X-direction No. 1 load bar 20 left end is provided with a recessed circle, recessed circle is arranged on X-direction and loads in the semicircle groove of seat 21, the centre of recessed circle is provided with a pin-and-hole, No. 1 bearing pin 23 loads the pin-and-hole of flap 22 and the pin-and-hole of the X-direction No. 1 recessed circle of load bar 20 through X-direction, X-direction No. 1 load bar 20 and X-direction is loaded flap 22 and X-direction and loads seat 21 and interfix.
Hydraulic loading device 17 described in technical scheme also comprises Y-direction and loads bracing frame 29, Y-direction mounting seat 30 and Y-direction electro-hydraulic loading base 31;
Described electro-hydraulic loading unit also comprises electrohydraulic servo valve 34, elastic device 36, spherical plain bearing rod end 33;
Described electrohydraulic servo valve 34 is fixed on the upper surface of servo-cylinder 32;
Described spherical plain bearing rod end 33 is fixedly connected with servo-cylinder 32, and spherical plain bearing rod end 33 is hinged on Y-direction electro-hydraulic loading base 31;
Described spherical plain bearing rod end 33 is made up of spherical plain bearing rod end base and connecting rod, the right-hand member of connecting rod is spheroidite, be arranged in spherical plain bearing rod end base, connecting rod can rotate in spherical plain bearing rod end base, left end and servo-cylinder 32 right side of connecting rod are threaded connection, and the spherical plain bearing rod end base of spherical plain bearing rod end 33 is by the base top end surfaces in hinge in the Y direction electro-hydraulic loading base 31;
Described elastic device 36 is threaded connection with the left end of servo-cylinder 32 piston rod;
The left end connection holes of institute's displacement sensors 35 is sleeved on elastic device 36 with on the screw rod be threaded of servo-cylinder 32 piston rod;
Described Y-direction electro-hydraulic loading base 31 is fixed in Y-direction mounting seat 30;
Described Y-direction mounting seat 30 is fixed on Y-direction and loads on bracing frame 29;
Described Y-direction loads bracing frame 29 and is set to two, is fixed on Y-direction auxiliary guide rail 28.
Cover plate 24 described in technical scheme is made up of upper plate and bearing pin; Upper plate is provided with four through holes, and bearing pin upper end is fixed in the pin-and-hole at cover plate 24 center by interference fit, and bearing pin and X-direction No. 2 load bars 40 coordinate near the pin-and-hole of the plane of right-hand member;
Described base 25 is fixed on secondary load worktable 15; Described base 25 is made up of floor and two side plates, respectively has two threaded holes above two side plates, and bolt is through the threaded hole on the through hole of upper plate and side plate.
Longitudinal plane of symmetry of the auxiliary guide rail of Y-direction described in technical scheme 28 loads with balancing weight inertia and to add loading worktable 8 in assist apparatus mutually vertical, longitudinal plane of symmetry of Y-direction auxiliary guide rail 28 and the axis co-planar of servo-cylinder 32, and with two Y-directions, to load the axes normal that bracing frame 29 is parallel to each other coplanar, the axis of servo-cylinder 32 is mutually vertical with loading worktable 8, and the load bar 19 in Y-direction charger part loads with balancing weight inertia and loading worktable 8 side surface added in assist apparatus contacts and connects.
The output terminal of programmable controller PLC described in technical scheme is connected with cooler and solenoid directional control valve electric wire respectively;
The signal output part of described Y-direction servo controller is connected with the signal input part electric wire of electrohydraulic servo valve 34;
The signal output part of described Z-direction servo controller is connected with the signal input part electric wire of Z-direction electrohydraulic servo valve;
The exciting current output terminal of described vibrator controller is connected with vibrator 13 exciting current input end electric wire.
Balancing weight 5 described in technical scheme is provided with more than two pieces, described balancing weight 5 one-tenth square, and the outside of balancing weight has three U-type groove; The upper surface of U-lag both sides is respectively provided with a hemisphere projection, and the lower surface of U-type groove both sides is respectively provided with a hemisphere pit, and the hemisphere of every block balancing weight upper surface is protruding to be aligned with lower surface hemisphere pit; Three U-type groove on every block balancing weight align, and form through from top to bottom three long U-type groove, by coordinating of bolt and long U-type groove, are fixed on worktable 4 by balancing weight 5 identical for more than two pieces structures.
Loading guideway 6 described in technical scheme is made up of the guide rail 38 that guideway web joint 39,2 slide blocks that structure is identical 37 are identical with 2 structures;
Described slide block 37 is fixed on the lower surface loading worktable 8; Described guide rail 38 is fixed on the upper surface of guideway web joint 39; Between worktable 4 and guideway web joint 39, arrange cushion block 27, the upper surface of cushion block 27 contacts with the lower surface of guideway web joint 39; Guideway web joint 39 is fixed on worktable 4.
Worktable 8 is loaded spacing by the stationary installation 7 that 4 structures are identical described in technical scheme, described stationary installation 7 is made up of stationary installation base and fixed bar, the top of stationary installation base is fixedly connected with one end of fixed bar, the bottom of stationary installation base fixes on the ground, the fixed bar other end is provided with a right angle mouth, right angle mouth cooperatively interacts with four right-angle sides loading worktable 8 and is installed together, and restriction loads worktable 8 and moves along X, Y both direction;
Described Z-direction loaded seat 10 is fixed on the ram 11 on heavy type numerical control plane milling and boring machine; Described ram 11 can move along the crossbeam 12 on heavy type numerical control plane milling and boring machine along Y-direction.
Compared with prior art the beneficial effects of the utility model are:
1. heavy type numerical control plane milling and boring machine table feed system reliability test bench described in the utility model adopts hydraulic loading device, vibrator and balancing weight loading section to simulate dynamic and static Milling Force and moment of torsion to heavy digital control plane milling and boring machine, tested heavy type numerical control plane milling and boring machine table feed system is carried out to the fail-test of Reality simulation operating mode, and carry out real-time failure data acquisition.For the reliability assessment in later stage, Reliability modeling and reliability prediction provide practical basic data, substantially reduce data acquisition time.
2. X-direction simulation cutting power described in the utility model loads the simulation adopting vibrator and auxiliary table to realize dynamic and static Milling Force.When auxiliary table and tested worktable rigid attachment, produce interaction force by the correlation parameter of Control experiment worktable and auxiliary table, i.e. static Milling Force.When auxiliary table is connected by vibrator with tested worktable, by controlling the correlation parameter of exciter parameters and auxiliary table and test bench, dynamic milling force can be simulated.Thus realize the loading of the dynamic and static Milling Force in worktable displacement in the X direction.
3. Y-direction described in the utility model and Z-direction electro-hydraulic servo loading device can realize the simulation loading of dynamic and static Milling Force, and can regulate according to actual condition the size, frequency and the test period that load dynamic milling force, test parameters can be stored, so that follow-up inquiry and analysis simultaneously.
4. the fail-test system accommodation of heavy type numerical control planer-type milling machine described in the utility model is wider, can for the heavy type numerical control plane milling and boring machine table feed system of different model, only need change hydraulic cylinder base, load guide rail, the quantity of balancing weight and analog operation platform just can carry out reliability load test and performance parameter testing and monitoring to it, embody dirigibility and the versatility of this pilot system.
5. the automatic control section in heavy type numerical control plane milling and boring machine table feed system reliability test system described in the utility model is mainly through displacement transducer and the pull pressure sensor Milling Force Real-Time Monitoring to simulation.Realize in real time monitoring and closed-loop control and feedback, improve the precision simulating Milling Force.The force parameter of dynamically cutting loaded is presented on the man machine operation interface of upper industrial computer simultaneously.
6. in heavy type numerical control plane milling and boring machine table feed system reliability test system described in the utility model, automatic control section combines in the unified control of host computer, can realize the control of electro-hydraulic servo loading device and the control to testing and monitoring part simultaneously.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described:
Fig. 1 is the axonometric projection graph of heavy type numerical control plane milling and boring machine table feed system reliability test bench structure described in the utility model composition;
Fig. 2 is the axonometric projection graph of Y-direction electro-hydraulic loading part in heavy type numerical control plane milling and boring machine table feed system reliability test bench described in the utility model;
Fig. 3 is the axonometric projection graph of X-direction charger in heavy type numerical control plane milling and boring machine table feed system reliability test bench described in the utility model;
Fig. 4 is the axonometric projection graph of the balancing weight in heavy type numerical control plane milling and boring machine table feed system reliability test bench described in the utility model;
Fig. 5 is the axonometric projection graph of the horizontal stationary installation in heavy type numerical control plane milling and boring machine table feed system reliability test bench described in the utility model;
Fig. 6 is the axonometric projection graph that the loading guideway in heavy type numerical control plane milling and boring machine table feed system reliability test bench described in the utility model is installed;
Fig. 7 is the Y-direction electro-hydraulic loading force analysis schematic diagram in heavy type numerical control plane milling and boring machine table feed system reliability test bench described in the utility model;
Fig. 8 is the structural principle block diagram of automatic control section in heavy type numerical control plane milling and boring machine table feed system reliability test bench described in the utility model;
In figure: 1. lathe bed, 2. snail bar, 3. servomotor and worm screw case, 4. worktable, 5. balancing weight, 6. load guideway, 7. fixed mount, 8. load worktable, 9. column, 10.Z direction loads seat, 11. rams, 12. crossbeams, 13 vibrators, 14.1 number pull pressure sensor, 15. secondary load worktable, 16. auxiliary servo motors and worm screw case, 17. hydraulic loading devices, 18. pressing plates, 19.Y direction load bar, No. 1,20.X direction load bar, 21.X direction loads seat, 22.X direction loads flap, 23.1 number bearing pin, 24. cover plates, 25. bases, 26. pull pressure sensor, 27. cushion blocks, 28.Y direction auxiliary guide rail, 29.Y direction loads bracing frame, 30.Y direction mounting seat, 31.Y direction electro-hydraulic loading base, 32. servo-cylinders, 33. spherical plain bearing rod ends, 34. electrohydraulic servo valves, 35. displacement transducers, 36. elastic devices, 37. slide blocks, 38. guide rails, 39. guideway web joints, No. 2,40.X direction load bar
Embodiment
Below in conjunction with accompanying drawing, the utility model is explained in detail:
Consult Fig. 1, heavy type numerical control plane milling and boring machine table feed system reliability test bench described in the utility model comprises balancing weight inertia and loads and add assist apparatus part, X-direction loading section, Y-direction loading section, Z-direction loading section and automatic control section.
The object carrying out fail-test in the utility model patent is the table feed system of table movable type heavy type numerical control plane milling and boring machine, and heavy type numerical control plane milling and boring machine table feed system comprises lathe bed 1, snail bar 2, servomotor and worm screw case 3, worktable 4.The utility model is applicable to the dynamic and static cutting load of simulation of the heavy type numerical control plane milling and boring machine table feed system of Multiple Type and the reliability platform of inertial load.
Heavy digital control plane milling and boring machine table feed system is carried out to the analysis of cutting load:
Heavy type numerical control plane milling and boring machine table feed system is when carrying out cut, and the cutting force that processing work is subject to is the F that makes a concerted effort, and is decomposed into the component in three directions, is perpendicular to the main cutting force F that basal plane is consistent with cutting speed direction respectively c; Be in centripetal force F contrary with direction of feed in basal plane f; And be in back force F in basal plane and perpendicular with inlet wire direction p.Heavy type numerical control plane milling and boring machine table feed system reliability test bench described in the utility model carries out the loading of sound state cutting force for the ease of realizing simulation actual condition, by main cutting force F cmove to the axle center of cutter, be equivalent to a power F along cutting speed direction c' and moment of torsion M c(M c=F c× r, r are radius of clean-up), the power F after equivalence c' identical with centripetal force direction, two power are synthesized the F that makes a concerted effort of a direction of feed close.Therefore the cutting force that table feed system is subject in cutting process is the F that makes a concerted effort along direction of feed close, back force F pwith moment of torsion M c(M c=F c× r).
Heavy type numerical control plane milling and boring machine table feed system reliability test bench described in the utility model is by Z-direction loading section simulation back force F p;
If direction of feed in X direction, then the simulation of X-direction loading section is along the F that makes a concerted effort of direction of feed close, the F namely after translation c' and centripetal force F f, Y-direction loading section simulation torque M c;
If direction of feed is along Y-direction, then the simulation of Y-direction loading section is along the F that makes a concerted effort of direction of feed closewith moment of torsion M c.
One. balancing weight inertia loads and adds assist apparatus part
Described balancing weight inertia loads and adds assist apparatus part and comprises balancing weight 5 and add assist apparatus.
Consult Fig. 4, described balancing weight 5 one-tenth square, the outside of balancing weight has three U-type groove, the upper surface of U-lag both sides is respectively provided with a hemisphere projection, the lower surface of U-type groove both sides is respectively provided with a hemisphere pit, every block balancing weight 5 upper surface, hemisphere on lower surface is protruding, hemisphere pit aligns, every block balancing weight 5 upper surface, hemisphere on lower surface is protruding, hemisphere bowl configurations is measure-alike, prepare the identical balancing weight of some block structures 5 altogether, when the balancing weight 5 that more than two pieces and two pieces structures are identical is stacked together, two hemisphere projections of the balancing weight 5 of top and two hemisphere pits equipped effect playing location mutually of following balancing weight 5, the balancing weight 5 that multi-blocked structure is identical so can firmly stack together.When the balancing weight 5 that simultaneously more than two pieces and two pieces structures are identical is stacked together, two U-type groove on every block balancing weight 5 align mutually, form a through long U-type groove from top to bottom, in adopt two T-shaped bolts the to insert identical balancing weight of some block structures 5 formed two through long U-type groove from top to bottom, balancing weight 5 identical for some block structures is fixed on worktable 4.Balancing weight 5 is for simulating the weight of processing parts under actual condition and frock, and realize the simulation of inertial load, when carrying out fail-test, (number) weight of the balancing weight 5 that structure is identical and inertial load can increase and decrease according to actual condition.
Consult Fig. 1 and Fig. 5, the described assist apparatus that adds comprises loading worktable 8,4 stationary installations that structure is identical 7,4 pressing plates that structure is identical 18 and loads guideway 6.
Consult Fig. 1 and Fig. 6, described loading guideway 6 is made up of the guide rail 38 that guideway web joint 39,2 slide blocks that structure is identical 37 are identical with 2 structures.Loading guideway 6 can be that the secondary or rolling guide-rail pairs of rail plate or hydrostatic slideway are secondary.Described loading worktable 8 is rectangular plate structure part, and the both sides loading worktable 8 are evenly equipped with multiple threaded hole in X direction, for being bolted the slide block 37 loaded in guideway 6.Described guideway web joint 39 is rectangular plate structure part, and the both sides of guideway web joint 39 are evenly equipped with multiple threaded hole in X direction, for being bolted the guide rail 38 loaded in guideway 6.During installation, first place cushion block 27 on worktable 4, then, the secondary web joint 39 of mounting guide rail and slide block 37, guide rail 38.The lower surface of cushion block 27 is contacted with worktable 4, and the upper surface of cushion block 27 contacts with the lower surface of guideway web joint 39, and adjusts cushion block 27 and be just in time positioned at immediately below guide rail 38, makes its rigidity reach best.Guideway web joint 39 is by pressing plate 18 and be T-shapedly bolted on worktable 4, integrally moves in X direction.The plank frame part that the pressing plate 18 that 4 described structures are identical is side one-tenth zigzag, one end of pressing plate 18 is processed with the bolt hole of installation 2 T-shaped bolts, one end of pressing plate 18 is connected with at worktable 4 by 2 T-shaped bolts, and the other end of the pressing plate 18 of zigzag is pressed in the edge of guideway web joint 39;
Consult Fig. 5, the stationary installation 7 that 4 described structures are identical is all made up of stationary installation base and fixed bar, the top of stationary installation base and one end of fixed bar are bolted to connection, the bottom ring flange of stationary installation base is bolted on ground by 4, the fixed bar other end is provided with a right angle mouth, right angle mouth cooperatively interacts with four right-angle sides loading worktable 8 and is installed together, restriction loads the movement along X, Y both direction of worktable 8, and loading worktable 8 can only be moved up and down along Z-direction;
During test, the worktable 4 that balancing weight 5 and loading guideway 6 are housed moves in X direction under lathe drive system drags, load worktable 8 to be moved up and down along Z-direction by stationary installation 7, and can not move along X, Y-direction, the Z-direction load bar of the electro-hydraulic loading unit being fixedly mounted on ram 11 bottom is contacted with the upper surface loading worktable 8 connect, the load bar 19 be arranged in the ground Y-direction loading section loading worktable 8 the same side is connected with the surface contact loading worktable 8 side, realizes simulation loading that is quiet, dynamic cutting force.
Two .X direction loading sections
Consult Fig. 1 and Fig. 3, described X-direction loading section comprises vibrator 13, No. 1 pull pressure sensor 14, secondary load worktable 15, auxiliary servo motor and worm screw case 16, X-direction No. 1 load bar 20, X-direction loads seat 21, X-direction loads flap 22, No. 1 bearing pin 23, cover plate 24, X-direction No. 2 load bars 40 and base 25.
Described vibrator 13 the utility model is for ES-10-240 type, vibrator 13 is made up of exciter body and base, base is formed by floor and two plate-side plate weldings or mechanical attachment, both sides, floor respectively have two U-shaped mouths, through four U mouths, vibrator 13 are fixed on secondary load worktable 15 by T-shaped bolt.
Described secondary load worktable 15 is identical with worktable 4 structure of heavy plane milling and boring machine, is all arranged on lathe bed 1.
Described auxiliary servo motor is also identical with worm screw case 3 structure with the servomotor of heavy plane milling and boring machine with worm screw case 16, auxiliary servo motor is fixedly mounted on the right-hand member of secondary load worktable 15 and the left end of worktable 4 with worm screw case 3 respectively by the bolt that structure is identical with the servomotor of heavy plane milling and boring machine with worm screw case 16, and engaged each other by the worm screw in servomotor and worm screw case 3 and snail bar 2, produce driving force and drive secondary load worktable 15 and worktable 4 to move in X direction on lathe bed.
It is stepped ramp type plate structure part that described X-direction loads seat 21, and symmetrical before and after becoming, both sides, front and back respectively have two U-shaped mouths, through four U mouths, X-direction is loaded seat 21 be fixed on worktable 4 by T-shaped bolt; The upper surface of X-direction loading seat 21 has the groove of a semicircle, and X-direction No. 1 recessed circle of load bar 20 is arranged on X-direction and loads in the semicircle groove of seat 21 upper surface.
Described X-direction No. 1 load bar 20 is axle class formation part, left end has a recessed circle, recessed circle is just arranged on X-direction and loads in the semicircle groove of seat 21, centre one pin-and-hole of recessed circle, No. 1 bearing pin 23 loads the pin-and-hole of flap 22 and the pin-and-hole of the X-direction No. 1 recessed circle of load bar 20 through X-direction, X-direction No. 1 load bar 20 and X-direction is loaded flap 22 and X-direction and loads seat 21 and interfix; The right-hand member of described X-direction No. 1 load bar 20 is threaded with the left end of No. 1 pull pressure sensor 14.The left end of right-hand member and X-direction No. 2 load bars 40 of No. 1 described pull pressure sensor 14 is threaded.
Described X-direction No. 2 load bars 40 are axle class formation part, have a plane near right-hand member place, have a pin-and-hole in the middle of plane, for the bearing pin through cover plate 24 lower surface, base 25 and X-direction No. 2 load bars 40 are interfixed; The right side of described X-direction No. 2 load bars 40 has a threaded hole to coordinate with the threaded hole of the output shaft of vibrator 13.
Described cover plate 24 is made up of upper plate and bearing pin, and upper plate is plate parts, and there are four through holes at upper surface four angles of upper plate, and bolt coordinates through through hole with four threaded holes above base 25 latus inframedium and interfixes; The bearing pin upper end of cover plate 24 is fixed on by interference fit in the pin-and-hole at cover plate 24 center, bearing pin and X-direction No. 2 load bars 40 of cover plate 24 coordinate near the pin-and-hole of the plane of right-hand member, when the bolt of cover plate 24 upper plate corner is down twisted, cover plate 24 bearing pin is through the pin-and-hole of X-direction No. 2 load bars 40 near the plane of right-hand member, X-direction No. 2 load bars and cover plate 24 and base 25 is fixed on secondary load worktable.
Described base 25 is formed by floor and two plate-side plate weldings or mechanical attachment, two threaded holes are respectively had above two side plates, for securing cover plate 24, both sides, floor respectively have two U-shaped mouths, through four U mouths, base 25 are fixed on secondary load worktable 15 by T-shaped bolt.
When carrying out heavy machine tool table feed system fail-test, X-direction can carry out two kinds of load modes, the first, by bolt, cover plate 24 and X-direction No. 2 load bars 40 are fixed on base 25, realize secondary load worktable 15 by the servomotor in the servomotor in control auxiliary servo motor and worm screw case 16 and servomotor and worm screw case 3 and load to worktable 4; The second, unclamps the bolt of cover plate 24 4 jiaos, removes cover plate 24, by the servomotor in control auxiliary servo motor and worm screw case 16 and vibrator 13, realizes the loading of the dynamic and static power to worktable 4.
Three .Y direction loading sections
Consult Fig. 1 to Fig. 2, described Y-direction loading section is made up of the hydraulic loading device 17 that two nested structures are identical, often overlaps hydraulic loading device 17 and comprises electro-hydraulic loading unit, Y-direction auxiliary guide rail 28, Y-direction loading bracing frame 29, Y-direction mounting seat 30 and Y-direction electro-hydraulic loading base 31.
Consult Fig. 1, the hydraulic loading device 17 that two described nested structures are identical is arranged on the right side of auxiliary table 8 simultaneously, wherein a set of position being arranged on the lower right corner of close auxiliary table 8, on the another set of position being arranged on the upper right corner of close auxiliary table 8.
Described electro-hydraulic loading unit comprises electrohydraulic servo valve 34, Y-direction load bar 19, pull pressure sensor 26, elastic device 36, displacement transducer 35, spherical plain bearing rod end 33 and servo-cylinder 32.
Consult Fig. 2, described servo-cylinder 32 selects single piston or double-piston rod-type hydraulic jack, for single-piston rod formula servo-cylinder in embodiment of the present utility model, single-piston rod stretches out from the left end of servo-cylinder 32, four threaded holes are had, for fixing electrohydraulic servo valve 34 in the middle of servo-cylinder 32 upper surface.
Described electrohydraulic servo valve 34 (the utility model is for the G761-3005B type servo-valve of MOOG company of the U.S.) is arranged on the upper surface of servo-cylinder 32 by four bolts.
Consult Fig. 2, described spherical plain bearing rod end 33 is made up of spherical plain bearing rod end base and connecting rod, the right-hand member of connecting rod is that spheroidite is arranged on i.e. ball pivot connection in spherical plain bearing rod end base, connecting rod can rotate in spherical plain bearing rod end base, left end and servo-cylinder 32 right side of connecting rod are threaded connection, the spherical plain bearing rod end base of spherical plain bearing rod end 33 is by the base top end surfaces in hinge in the Y direction electro-hydraulic loading base 31, servo-cylinder 32 horizontal positioned is in the Y direction on electro-hydraulic loading base 31, its axis is vertical with working table movement direction, and load the axis of bracing frame 29 in same vertical plane with two Y-directions.
Described displacement transducer 35 (the utility model is for LVDT type displacement transducer) shell is fixed by screws on the cylinder body of servo-cylinder 32, its inner core is connected with servo-cylinder piston rod left end, when piston rod moves, the inner core of displacement transducer 35 is also along with movement, realizes measurement and the feedback of displacement.
Described elastic device 36 is made up of the nut that the identical bolt of left side web joint, right side web joint, sleeve that 2 structures are identical, 2 specifications is identical with 2 specifications.Wherein, left side web joint is identical with right side connecting board structure, and be a rectangular flat plate, its center position is provided with tapped through hole, respectively there is a through hole both sides of tapped through hole, and the external diameter of the sleeve that 2 structures are identical is greater than the diameter of two side through hole on left side web joint and right side web joint.The bolt that 2 specifications are identical inserts in the through hole of left side web joint and web joint both sides, right side, on two bolts of the identical sleeve set of 2 structures between left side web joint and right side web joint, finally by nut, sleeve identical to left side web joint, 2 structures and right side web joint are fixed together again.Threaded hole on the web joint on right side and the left end of servo-cylinder 32 piston rod are threaded connection, and the threaded hole on the web joint in left side is threaded with the right-hand member of studs.Elastic device can absorption portion displacement but can transmitting force (natural frequency of elastic device should be greater than load excited frequency more than two times).The left end of studs is threaded with pull pressure sensor 26, and the left end of pull pressure sensor 26 is threaded with Y-direction load bar 19 right-hand member.
Described Y-direction electro-hydraulic loading base 31 is the box typed structure parts adopting the right-hand member welded or be mechanically connected to open wide by four block length square plates (i.e. left wallboard, front panel, squab panel and base plate), the base plate of Y-direction electro-hydraulic loading base 31 is provided with four through holes, for installing T-shaped bolt, Y-direction electro-hydraulic loading base 31 is fixed in Y-direction mounting seat 30, is namely fixed on the base top end face of Y-direction mounting seat 30;
Described Y-direction mounting seat 30 is rectangular flat class formation part, upper surface is provided with the T-slot of two Parallel Symmetrics, the Y-direction mounting seat 30 lower surface left and right sides is evenly equipped with four threaded holes, is respectively used to the Y-direction identical with two structures and loads bracing frame 29 and interfix;
It is puffer supporting leg (the utility model patent is for P06 types) that described Y-direction loads bracing frame 29, bottom has four U-shaped holes, is fixed in the Y direction on auxiliary guide rail 28 by bolt;
Described Y-direction auxiliary guide rail 28 is rectangular flat plate structural member, be provided with the T-slot of two Parallel Symmetrics along the longitudinal direction of Y-direction auxiliary guide rail 28 in upper surface centre position, be provided with 2 symmetrically to rectangular through hole at the external side parallel of the T-slot of two Parallel Symmetrics.
Described Y-direction electro-hydraulic loading base 31 is bolted in the T-slot of two Parallel Symmetrics of Y-direction mount pad 30, and the top end face that the Y-direction that Y-direction mount pad 30 is identical with two structures loads bracing frame 29 is bolted.The Y-direction that two described structures are identical loads bracing frame 29 and is arranged on Y-direction auxiliary guide rail 28, the Y-direction that two structures are identical loads bracing frame 29 and in the Y direction auxiliary guide rail 28 can move left and right adjusted position and put, after position is adjusted, be bolted on Y-direction auxiliary guide rail 28 by T-shaped.
Hydraulic loading device 17 is installed on the ground by Y-direction auxiliary guide rail 28, longitudinal plane of symmetry of Y-direction auxiliary guide rail 28 loads with balancing weight inertia and adds the mutual vertical of loading worktable 8 in assist apparatus, longitudinal plane of symmetry of Y-direction auxiliary guide rail 28 and the axis co-planar of servo-cylinder 32, and with two Y-directions, to load the axes normal that bracing frame 29 is parallel to each other coplanar, the axis of servo-cylinder 32 and the mutual vertical of loading worktable 8, load bar 19 in Y-direction charger part loads with balancing weight inertia and loading worktable 8 side surface added in assist apparatus contacts and connects.
Consult Fig. 1, described Y-direction loading section is made up of the hydraulic loading device 17 that two nested structures are identical, two cover hydraulic loading devices are in the same side of worktable 4, and therefore two cover hydraulic loading devices 17 are varied in size by loading force and play the effect of applying moment of torsion loading.
Consult Fig. 7, in described Y-direction loading section, two cover hydraulic loading devices carry out the analysis of stressing conditions when dynamic static force loads to loading worktable 8, are mainly divided into 2 kinds of situations.The first situation loads worktable 8 to be subject to the identical power F1 of size that two cover hydraulic loading devices load and F2, now loads the effect that worktable 8 only bears the power of Y-direction; The second situation loads worktable to be subject to size not identical power F1 and F2, now loads worktable and then bear the power of Y-direction and the effect of moment of torsion.The size of loading force and moment of torsion, according to fail-test needs, can be overlapped the size of hydraulic loading device loading force by change two and change.
Four .Z direction loading sections
Consult Fig. 1, described Z-direction loading section comprises electro-hydraulic loading unit and Z-direction loaded seat 10.
Electro-hydraulic loading unit in described Z-direction loading section is identical with the electro-hydraulic loading cellular construction in Y-direction loading section, comprises electrohydraulic servo valve, load bar, pull pressure sensor, elastic device, displacement transducer, oscillating bearing and servo-cylinder.
Consult Fig. 2, the electrohydraulic servo valve 34 of Z-direction electrohydraulic servo valve and Y-direction electro-hydraulic loading unit, the servo-cylinder 32 of Z-direction servo-cylinder and Y-direction electro-hydraulic loading unit, the displacement transducer 35 of Z-direction displacement transducer and Y-direction electro-hydraulic loading unit, the elastic device 36 of Z-direction elastic device and Y-direction electro-hydraulic loading unit, the pull pressure sensor 26 of Z-direction pull pressure sensor and Y-direction electro-hydraulic loading unit, the Y-direction load bar 19 of Z-direction load bar and Y-direction electro-hydraulic loading unit, Z-direction spherical plain bearing rod end is identical with spherical plain bearing rod end 33 structure of Y-direction electro-hydraulic loading unit.
Consult Fig. 2, Z-direction spherical plain bearing rod end is made up of Z-direction spherical plain bearing rod end base and Z-direction connecting rod, right-hand member and the Z-direction spherical plain bearing rod end base of Z-direction connecting rod are that ball pivot is connected, the left end of Z-direction connecting rod and the right side of Z-direction servo-cylinder are threaded connection, and the Z-direction squab panel in the Z-direction spherical plain bearing rod end base of Z-direction spherical plain bearing rod end and Z-direction loaded seat 10 is hinged; Right side web joint in Z-direction elastic device is threaded with the left end of the piston rod of Z-direction servo-cylinder, left side web joint in Z-direction elastic device is threaded with the right-hand member of Z-direction pull pressure sensor, and the left end of Z-direction pull pressure sensor is threaded with Z-direction load bar.
Described Z-direction displacement transducer (the utility model is for LVDT type displacement transducer) shell is fixed by screws on the cylinder body of Z-direction servo-cylinder, its inner core is connected with Z-direction servo-cylinder piston rod left end, when piston rod moves, the inner core of Z-direction displacement transducer is also along with movement, realizes measurement and the feedback of displacement.
Described Z-direction loaded seat 10 is the box typed structure parts of the open bottom end welded by four block length square plates (i.e. top board, left wallboard, right wallboard and axial squab panel) or be mechanically connected, there are a main Latin and four auxiliary Latins in the outside of its top board, four auxiliary Latin shapes are as mushroom, be positioned at corner outside top board, main Latin shape is also as mushroom, be positioned in the middle of outside top board, the main Latin on top board and four auxiliary Latin brute forces promote and are strained and fixed by the disk spring of ram 11 inside on heavy type numerical control plane milling and boring machine.Z-direction loading section, by regulating the position of ram 11, can move along the Y-direction loading worktable 8, and the Z-direction can testing diverse location loads.
Five. control section automatically
Consult Fig. 8, described automatic control section comprises upper industrial computer, programmable controller PLC, vibrator controller, Y-direction servo controller, Z-direction servo controller, working table movement servocontrol instrument and auxiliary table motion servo controller.
The RS-232C port of described programmable controller PLC is electrically connected with the RS-232C port of upper industrial computer, the output terminal of programmable controller PLC is connected with cooler and solenoid directional control valve respectively, the parameter such as the start and stop of controlled cooling model machine, the temperature of chilled water respectively, for hydraulic power unit provides chilled water, and control the start and stop of pumping plant by controlling solenoid directional control valve and provide hydraulic oil to electro-hydraulic loading unit.
The RS-232C port of described Y-direction servo controller is connected with the RS-232C port electric wire of upper industrial computer, Y-direction servo controller and upper industrial computer carry out communication, the signal output part of Y-direction servo controller is connected with the signal input part electric wire of electrohydraulic servo valve 34, realize servo-cylinder 32 and carry out the loading of dynamic and static cutting force by controlling servo-valve to loading worktable 8, in loading procedure, by displacement transducer and pull pressure sensor, the displacement detected and power force signal are passed to Y-direction servo controller through signal amplifier, realize closed-loop control.
Described Z-direction servo controller is the same with Y-direction servo controller principle, up direction carries out communication by RS-232 and upper industrial computer, down direction realizes servo-cylinder and carries out the loading of dynamic and static cutting force by controlling servo-valve to loading worktable 8, in loading procedure, by displacement transducer and pull pressure sensor, the displacement detected and pressure signal are passed to Z-direction servo controller through signal amplifier, realize closed-loop control.
The RS-232C port of described vibrator controller is connected with the RS-232C port electric wire of upper industrial computer, the exciting current output terminal of vibrator controller is connected with vibrator 13 exciting current input end electric wire, vibrator controller exports control signal to vibrator 13, controls vibrator loading force.Pull pressure sensor exports with the signal of displacement transducer and feeder ear is connected with the input of displacement and feeder ear electric wire with the power of vibrator controller, the signal detected is passed to vibrator controller by pull pressure sensor and displacement transducer after signal amplifier amplifies, realize closed-loop control, and the information such as the size of institute's loading force, waveform and frequency, show in real time at VB control inerface.
Upper industrial computer control inerface is worked out by VB, selected X-direction on control inerface, Y-direction, the dynamic force size that Z-direction loads, frequency, after waveform and load time etc., with programmable controller PLC, vibrator controller, two Y-direction servo controllers, Z-direction servo controller working table movement direction servo controller and auxiliary table direction of motion servo controller carry out serial communication by RS-232C, the first controlled cooling model machine of programmable controller PLC cools to hydraulic power unit, secondly output current controls electromagnetic switch valve events, by hydraulic cylinder, loading worktable 8 is carried out to the loading of dynamic force, and by regulating the size of the power of two electro-hydraulic servo loading devices of Y-direction loading, simulate in actual condition by cutting the moment of torsion produced worktable.Meanwhile, in working table movement direction, the loading of X-direction dynamic force can be carried out by X-direction loading section to worktable.
The principle of work of heavy type numerical control plane milling and boring machine table feed system reliability test bench:
First, according to Fig. 1, X-direction charger is installed, make the axis coaxle of X-direction No. 1 load bar 20 axis and vibrator 13, and parallel with the guide rail direction of worktable 4, debugging test makes its normal operation.Then, Z-direction charger is installed, makes the axes normal of the load bar of Z-direction electro-hydraulic loading unit in surface level (on worktable plane).Y-direction charger is installed again, makes the axis of Y-direction load bar 19 in surface level, and vertical with the guide rail direction of worktable 4.The automatic control section of Installation and Debugging again.Before test, according to the weight distribution rule of heavy type numerical control plane milling and boring machine processing work, balancing weight installed by worktable 4, simulation workpiece weight, realizes inertia and loads.Then, by correlation parameters such as the setting of control desk control inerface speed of feed, X-direction load, Y-direction load, Z-direction load, torque, and start cooling system, carry out fail-test.In process of the test, the set sensor such as pressure, speed, displacement is passed main frame back coherent signal in real time and controls the actions such as corresponding vibrator, loading hydraulic cylinder, realize closed-loop control, and correlation test data are stored, for follow-up fail-safe analysis provides foundation.
Embodiment described in the utility model can understand for the ease of these those skilled in the art and apply the utility model, the utility model is a kind of embodiment of optimization, a kind of preferably concrete technical scheme in other words conj.or perhaps, therefore the utility model is not limited to the description implementing this kind of more specific technical scheme.Do not need through the equivalent structure change of creative work or various amendment all in protection domain of the present utility model if relevant technician makes when adhering to the utility model basic technical scheme.

Claims (10)

1. a heavy type numerical control plane milling and boring machine table feed system reliability test bench, comprises balancing weight inertia and loads and add assist apparatus part, X-direction loading section, Y-direction loading section, Z-direction loading section and automatic control section; It is characterized in that:
Described balancing weight inertia loads and adds assist apparatus part and comprises balancing weight (5) and add assist apparatus; Balancing weight (5) is fixed on worktable (4), described in add assist apparatus comprise load worktable (8) and loading guideway (6); Described loading guideway (6) is fixed on and loads worktable (8) lower surface;
Described X-direction loading section comprises vibrator (13), No. 1 pull pressure sensor (14), secondary load worktable (15), auxiliary servo motor and worm screw case (16), X-direction No. 2 load bars (40), X-direction No. 1 load bar (20) and cover plate (24); Described vibrator (13) is fixed on secondary load worktable (15); Described X-direction No. 1 load bar (20) and No. 1 pull pressure sensor (14), X-direction No. 2 load bars (40), vibrator (13) are fixedly connected sequentially; X-direction No. 2 load bars (40) are fixed in loading worktable (15) by base (25) by described cover plate (24); Described cover plate (24) is positioned between No. 1 pull pressure sensor (14) and vibrator (13); Described auxiliary servo motor and worm screw case (16) drive auxiliary table (15) to move in X direction;
Described Y-direction loading section is the hydraulic loading device (17) that two covers are identical, is positioned at the same side loading worktable (8); Described hydraulic loading device (17) comprises electro-hydraulic loading unit, Y-direction auxiliary guide rail (28); Described electro-hydraulic loading unit comprises Y-direction load bar (19), pull pressure sensor (26), displacement transducer (35) and servo-cylinder (32); The left end of described pull pressure sensor (26) is fixedly connected with Y-direction load bar (19) right-hand member, and the right-hand member of pull pressure sensor (26) is fixedly connected with servo-cylinder (32); Institute's displacement sensors (35) is arranged on servo-cylinder (32); Described servo-cylinder (32) is fixed on the ground by Y-direction auxiliary guide rail (28);
Described Z-direction loading section comprises electro-hydraulic loading unit and Z-direction loaded seat (10); Described electro-hydraulic loading unit is fixed in Z-direction loaded seat (10);
Electro-hydraulic loading unit in described Z-direction loading section is identical with the electro-hydraulic loading cellular construction in Y-direction loading section;
Described loading worktable (8) moves up and down along Z-direction, and Z-direction load bar contacts with the upper surface loading worktable (8) and connects, and Y-direction load bar (19) contacts with loading worktable (8) side surface and connects.
2. a kind of heavy type numerical control plane milling and boring machine table feed system reliability test bench according to claim 1, is characterized in that:
Described automatic control section comprises upper industrial computer, programmable controller PLC, vibrator controller, Y-direction servo controller, Z-direction servo controller, the servo controller in working table movement direction and the servo controller of auxiliary table direction of motion;
The RS-232C port of described programmable controller PLC is electrically connected with the RS-232C port of upper industrial computer, the RS-232C port of described Y-direction servo controller is connected with the RS-232C port electric wire of upper industrial computer, the RS-232C port of described Z-direction servo controller is connected with the RS-232C port electric wire of upper industrial computer, and the RS-232C port of described vibrator controller is connected with the RS-232C port electric wire of upper industrial computer; The described RS-232C port of working table movement servocontrol instrument is electrically connected with the RS-232C port of upper industrial computer, and the described RS-232C port of auxiliary table motion servo controller is electrically connected with the RS-232C port of upper industrial computer.
3. a kind of heavy type numerical control plane milling and boring machine table feed system reliability test bench according to claim 1, is characterized in that:
Described X-direction loading section also comprises X-direction and loads seat (21), X-direction loading flap (22), No. 1 bearing pin (23);
Described X-direction loads seat (21) and is fixed on worktable (4); The upper surface that X-direction loads seat (21) is provided with a semicircle groove;
Described X-direction No. 1 load bar (20) left end is provided with a recessed circle, recessed circle is arranged on X-direction and loads in the semicircle groove of seat (21), the centre of recessed circle is provided with a pin-and-hole, No. 1 bearing pin (23) loads the pin-and-hole of flap (22) and the pin-and-hole of the X-direction No. 1 recessed circle of load bar (20) through X-direction, X-direction No. 1 load bar (20) and X-direction is loaded flap (22) and X-direction and loads seat (21) and interfix.
4. a kind of heavy type numerical control plane milling and boring machine table feed system reliability test bench according to claim 1, is characterized in that:
Described hydraulic loading device (17) also comprises Y-direction and loads bracing frame (29), Y-direction mounting seat (30) and Y-direction electro-hydraulic loading base (31);
Described electro-hydraulic loading unit also comprises electrohydraulic servo valve (34), elastic device (36), spherical plain bearing rod end (33);
Described electrohydraulic servo valve (34) is fixed on the upper surface of servo-cylinder (32);
Described spherical plain bearing rod end (33) is fixedly connected with servo-cylinder (32), and spherical plain bearing rod end (33) is hinged on Y-direction electro-hydraulic loading base (31);
Described spherical plain bearing rod end (33) is made up of spherical plain bearing rod end base and connecting rod, the right-hand member of connecting rod is spheroidite, be arranged in spherical plain bearing rod end base, connecting rod can rotate in spherical plain bearing rod end base, the left end of connecting rod and servo-cylinder (32) right side are threaded connection, and the spherical plain bearing rod end base of spherical plain bearing rod end (33) is by the base top end surfaces in hinge in the Y direction electro-hydraulic loading base (31);
Described elastic device (36) is threaded connection with the left end of servo-cylinder (32) piston rod;
The left end connection holes of institute's displacement sensors (35) is sleeved on elastic device (36) with on the screw rod be threaded of servo-cylinder (32) piston rod;
Described Y-direction electro-hydraulic loading base (31) is fixed in Y-direction mounting seat (30);
Described Y-direction mounting seat (30) is fixed on Y-direction and loads on bracing frame (29);
Described Y-direction loads bracing frame (29) and is set to two, is fixed on Y-direction auxiliary guide rail (28).
5. a kind of heavy type numerical control plane milling and boring machine table feed system reliability test bench according to claim 1, is characterized in that:
Described cover plate (24) is made up of upper plate and bearing pin; Upper plate is provided with four through holes, and bearing pin upper end is fixed in the pin-and-hole at cover plate (24) center by interference fit, and bearing pin and X-direction No. 2 load bars (40) coordinate near the pin-and-hole of the plane of right-hand member;
Described base (25) is fixed on secondary load worktable (15); Described base (25) is made up of floor and two side plates, respectively has two threaded holes above two side plates, and bolt is through the threaded hole on the through hole of upper plate and side plate.
6. a kind of heavy type numerical control plane milling and boring machine table feed system reliability test bench according to claim 1, is characterized in that:
Longitudinal plane of symmetry of described Y-direction auxiliary guide rail (28) load with balancing weight inertia and the loading worktable (8) that adds in assist apparatus mutually vertical, longitudinal plane of symmetry of Y-direction auxiliary guide rail (28) and the axis co-planar of servo-cylinder (32), and with two Y-directions, to load the axes normal that bracing frame (29) is parallel to each other coplanar, the axis of servo-cylinder (32) is mutually vertical with loading worktable (8), load bar (19) in Y-direction charger part loads with balancing weight inertia and loading worktable (8) side surface added in assist apparatus contacts and connects.
7. a kind of heavy type numerical control plane milling and boring machine table feed system reliability test bench according to claim 2, is characterized in that:
The output terminal of described programmable controller PLC is connected with cooler and solenoid directional control valve electric wire respectively;
The signal output part of described Y-direction servo controller is connected with the signal input part electric wire of electrohydraulic servo valve (34);
The signal output part of described Z-direction servo controller is connected with the signal input part electric wire of Z-direction electrohydraulic servo valve;
The exciting current output terminal of described vibrator controller is connected with vibrator (13) exciting current input end electric wire.
8. a kind of heavy type numerical control plane milling and boring machine table feed system reliability test bench according to claim 1, is characterized in that:
Described balancing weight (5) is provided with more than two pieces, and described balancing weight (5) becomes square, and the outside of balancing weight has three U-type groove; The upper surface of U-lag both sides is respectively provided with a hemisphere projection, and the lower surface of U-type groove both sides is respectively provided with a hemisphere pit, and the hemisphere of every block balancing weight upper surface is protruding to be aligned with lower surface hemisphere pit; Three U-type groove on every block balancing weight align, and form through from top to bottom three long U-type groove, by coordinating of bolt and long U-type groove, are fixed on worktable (4) by balancing weight (5) identical for more than two pieces structures.
9. a kind of heavy type numerical control plane milling and boring machine table feed system reliability test bench according to claim 1, is characterized in that:
Described loading guideway (6) is made up of the guide rail (38) that the identical slide block (37) of guideway web joint (39), 2 structures is identical with 2 structures;
Described slide block (37) is fixed on the lower surface loading worktable (8); Described guide rail (38) is fixed on the upper surface of guideway web joint (39); Between worktable (4) and guideway web joint (39), arrange cushion block (27), the upper surface of cushion block (27) contacts with the lower surface of guideway web joint (39); Guideway web joint (39) is fixed on worktable (4).
10. a kind of heavy type numerical control plane milling and boring machine table feed system reliability test bench according to claim 1, is characterized in that:
Described loading worktable (8) is spacing by the stationary installation (7) that 4 structures are identical, described stationary installation (7) is made up of stationary installation base and fixed bar, the top of stationary installation base is fixedly connected with one end of fixed bar, the bottom of stationary installation base fixes on the ground, the fixed bar other end is provided with a right angle mouth, right angle mouth cooperatively interacts with four right-angle sides loading worktable (8) and is installed together, and restriction loads worktable (8) and moves along X, Y both direction;
Described Z-direction loaded seat (10) is fixed on the ram (11) on heavy type numerical control plane milling and boring machine; Described ram (11) can move along the crossbeam (12) on heavy type numerical control plane milling and boring machine along Y-direction.
CN201520029370.8U 2015-01-15 2015-01-15 Heavy type numerical control plane milling and boring machine table feed system reliability test bench Withdrawn - After Issue CN204330376U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104535355A (en) * 2015-01-15 2015-04-22 吉林大学 Heavy numerical control plano-boring and milling machine workbench feeding system reliability test bed
CN107830998A (en) * 2017-10-31 2018-03-23 北华大学 Heavy type numerical control metal-planing machine mobile work platform reliability test
CN107884171A (en) * 2017-11-21 2018-04-06 北华大学 Rail fastening reliability test
CN107894332A (en) * 2017-11-29 2018-04-10 北华大学 Shaping machine horizontal work level reliability test system
CN107941489A (en) * 2017-11-21 2018-04-20 北华大学 Simulate the standard section of tower crane reliability test bench of actual condition loading

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104535355A (en) * 2015-01-15 2015-04-22 吉林大学 Heavy numerical control plano-boring and milling machine workbench feeding system reliability test bed
CN107830998A (en) * 2017-10-31 2018-03-23 北华大学 Heavy type numerical control metal-planing machine mobile work platform reliability test
CN107830998B (en) * 2017-10-31 2019-04-30 北华大学 Heavy type numerical control metal-planing machine mobile work platform reliability test
CN107884171A (en) * 2017-11-21 2018-04-06 北华大学 Rail fastening reliability test
CN107941489A (en) * 2017-11-21 2018-04-20 北华大学 Simulate the standard section of tower crane reliability test bench of actual condition loading
CN107884171B (en) * 2017-11-21 2019-09-24 北华大学 Rail fastening reliability test
CN107894332A (en) * 2017-11-29 2018-04-10 北华大学 Shaping machine horizontal work level reliability test system
CN107894332B (en) * 2017-11-29 2019-07-30 北华大学 Shaping machine horizontal work level reliability test system

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