CN202869792U - Electro-hydraulic servo and dynamometer mixed loading-based testing stand for reliability of machine tool main shaft - Google Patents
Electro-hydraulic servo and dynamometer mixed loading-based testing stand for reliability of machine tool main shaft Download PDFInfo
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- CN202869792U CN202869792U CN 201220504218 CN201220504218U CN202869792U CN 202869792 U CN202869792 U CN 202869792U CN 201220504218 CN201220504218 CN 201220504218 CN 201220504218 U CN201220504218 U CN 201220504218U CN 202869792 U CN202869792 U CN 202869792U
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Abstract
The utility model relates to a testing apparatus for a main shaft of a machine tool, especially to an electro-hydraulic servo and dynamometer mixed loading-based testing stand for reliability of a machine tool main shaft, thereby solving a problem that the existing reliability testing apparatus of the machine tool main shaft can not really simulate loading of dynamic and static cutting forces and cutting torques. The testing stand comprises a machine tool main shaft support portion, a torque loading portion and a cutting force loading portion. Specifically, the main shaft support portion is formed by a main shaft box base plate (14) and an iron pad combination unit (15); the torque loading portion includes a loading bar (12), an elastic membrane coupler (9), and a dynamometer (8), wherein the loading bar, the elastic membrane coupler, and the dynamometer are assembled coaxially; and the cutting force loading portion employs two loading modes: a resultant cutting force loading mode and a separate loading mode of a cutting axial force and a cutting radial force. According to the utility model, a reliability test of real condition simulation on the tested main shaft of the machine tool is carried out to stimulate and expose the fault of the product, thereby providing practical base data for reliability growth and estimation of the product.
Description
Technical field
The utility model relates to a kind of test unit of machine tool chief axis, or rather, the utility model relates to a kind of machine tool chief axis reliability test bench of realizing machine tool chief axis is carried out dynamic and static cutting force and cutting moment of torque mixing dynamic load by electro-hydraulic servo and dynamometer machine.
Background technology
Numerically-controlled machine is the important foundation stone of realizing the modernization of industry, and its quality, performance and owning amount have become the important symbol of weighing a national industrialized level and overall national strength.Although numerically-controlled machine has passed through the development of nearly half a century, its integrity problem is that people pay attention to and the key issue that solves is wanted in unremitting effort always.Integrity problem is that the condition number controlled machine is quick, the major issue of high-efficient development, and improving reliability is the key that improves numerically-controlled machine overall performance and technology.
The one of the main reasons that domestic numerical control lathe reliability level is on the low side is that the reliability level of its key feature is lower, and therefore studying numerically-controlled machine key feature reliability test has important practical significance.Machine tool chief axis is as one of key feature of numerically-controlled machine, and the reliability level of himself has important impact to the reliability level of complete machine.At present domestic have a simple main shaft reliability test of some functions, can only carry out dry run test or simple load test to tested main shaft, and the working condition of test simulation and real working condition there is a big difference.For the actual condition of the simulated machine tool main shaft of maximum possible, the utility model provides a cover can be simultaneously carry out the reliability test bench that dynamic and static cutting force and the cutting moment of torque load to machine tool chief axis.
Summary of the invention
Technical problem to be solved in the utility model be present reliability test device of machine tool spindle can not the dynamic and static cutting force of real simulation and the cutting moment of torque load, the utility model provides a kind of machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded, machine tool chief axis is carried out dynamic and static cutting force in realization and the cutting moment of torque is mixed dynamic load, and the dynamometer machine that the utility model provides comprises various types of dynamometer machines such as electric dynamometer, electric eddy current dynamometer.
For solving the problems of the technologies described above, the utility model is to adopt following technical scheme to realize, accompanying drawings is as follows:
Machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model, mainly formed by machine tool chief axis support section, moment of torsion loading section and cutting force loading section, described main shaft support part is comprised of main spindle box backing plate 14 and parallels combination 15, described main spindle box backing plate 14 is plate structure spare, described parallels combination 15 is the CNC milling machine parallels of quadruplet same size, main spindle box backing plate 14 is fixed on the ground black iron 1 by bolt and T-nut, compresses simultaneously to be installed on the main spindle box backing plate 14 lower plane CNC milling machine parallels;
Described moment of torsion loading section is by year rod 12 that adds coaxial assembling, flexible sheet shaft coupling 9 and dynamometer machine 8 form, described loading bar 12 is multidiameter, its large end is installed on the scroll chuck of main spindle box, small end is connected with an end key of flexible sheet shaft coupling 9, the output shaft of described dynamometer machine 8 is connected with the other end key of flexible sheet shaft coupling 9, dynamometer machine 8 is installed on the mobile platform 7, mobile platform 7 is fixed on the mobile platform base 6, the moving direction of mobile platform 7 is parallel with the machine tool chief axis axis direction, the cross section of mobile platform base 6 is the backing plate of T shape, is fixed on the ground black iron 1;
Described cutting force loading section adopts two kinds of load modes: resultant tool force load mode and cutting axial force are separated load mode with radial force, and described resultant tool force load mode is located pre-tightening apparatus and formed by cutting force hydraulic loading device, make a concerted effort bearing unit and the bearing unit of making a concerted effort; Described cutting axial force is separated load mode with radial force and is comprised of radial force charger, axial force charger and component bearing unit.
Described cutting force hydraulic loading device is comprised of hydraulic loading device, 2, No. 2 cutting force hydraulic loading device supporting legs 5 of No. 1 cutting force hydraulic loading device supporting leg and cutting force hydraulic loading device back up pad 3, on described cutting force hydraulic loading device back up pad 3 stuck-at-１ cutting force hydraulic loading device supporting legs 2 and No. 2 cutting force hydraulic loading device supporting legs 5, described hydraulic loading device is contained on the cutting force hydraulic loading device back up pad 3.
Described hydraulic loading device is by slide plate 51, retainer 52, oscillating bearing 53, hydraulic cylinder 54, servo-valve 55, displacement sensor bracket 57, elastic device 58, power sensor 59, multidiameter 61 and load bar 60 form, described retainer 52 is installed on the slide plate 51 by bolt and T-shaped nut, the left side of hydraulic cylinder 54 is threaded with the oscillating bearing of left end 53 threaded end bars, hydraulic cylinder 54 upper surfaces are hinged on the lower surface of top board in the retainer 52 by oscillating bearing, displacement sensor bracket 57 is fixed on the hydraulic cylinder right-hand member, the displacement transducer piston rod is fixedly connected with hydraulic cylinder 54 piston rod front ends, the screw thread of hydraulic cylinder 54 piston rods by front end with elastic device 58 be connected, elastic device 58 is connected with power sensor 59 by studs, power sensor 59 is connected with load bar 60 by studs, and servo-valve 55 is installed on the hydraulic cylinder 54.
Described slide plate 51 is a rectangular slab class formation spare, the upper plane of slide plate 51 is provided with 2 parallel T-slots, the lower plane of slide plate 51 be provided with cooperate with multidiameter 61 upper ends the ladder blind hole, cutting force hydraulic loading device back up pad 3 is provided with the central through hole that cooperates with the lower end of multidiameter 61, the upper and lower plane of the axis of rotation of described ladder blind hole and slide plate 51 is perpendicular, and slide plate 51 adopts bolt to be fixedly connected with cutting force hydraulic loading device back up pad 3.
Described hydraulic cylinder 54 is selected single-piston rod or double-piston rod-type hydraulic jack, piston rod stretches out from the right-hand member of hydraulic cylinder 54, the left side of hydraulic cylinder 54 is threaded with the oscillating bearing of left end 53 threaded end bars, the end fixed displacement sensor stand 57 of the piston rod of hydraulic cylinder 54, hydraulic cylinder 54 upper surfaces are hinged on the lower surface of top board in the retainer 52 by oscillating bearing, vertical axis of symmetry of hydraulic cylinder 54 is in vertical plane of symmetry of retainer 52, retainer 52 is by bolt and T-shaped being bolted on the slide plate 51, described displacement sensor bracket 57 other ends are provided with through hole, the inner core that is used for the fixed displacement sensor, the inner core of displacement transducer is also along with movement when piston rod moves, and displacement transducer just can record the displacement of piston rod.
Described elastic device 58 is comprised of 2 sleeves between identical 2 web joints in front and back of structure and 2 web joints, web joint is provided with 2 through holes, by 2 studs that pass web joint through hole and sleeve web joint and sleeve are fixed together with nut, elastic device 58 is used for the displacement of absorption portion exciting and transmission power, and its natural frequency should be greater than excited frequency more than two times.
Described No. 1 cutting force hydraulic loading device supporting leg 2 and No. 2 cutting force hydraulic loading device supporting legs 5 are engine supporting leg P06, and four U-shaped holes are arranged on the bottom, are fixed in ground black iron 1 by bolt;
Be evenly distributed with the annular through groove that three sections concentrics are isostructural, be used for erection bolt around described cutting force hydraulic loading device back up pad 3 central through holes, cutting force hydraulic loading device back up pad 3 is bolted on No. 1 cutting force hydraulic loading device supporting leg 2 and No. 2 cutting force hydraulic loading device supporting legs 5; Described hydraulic loading device is fastenedly connected by bolt and cutting force hydraulic loading device back up pad 3, No. 1 hydraulic loading device supporting leg 2, No. 2 cutting force hydraulic loading device supporting legs 5, cutting force hydraulic loading device back up pads 3 should guarantee the hydraulic loading device level, and the load bar 60 that guarantees hydraulic loading device is contour with machine tool chief axis 13 axis, satisfies the requirement that loads resultant tool force by the angle of adjusting between hydraulic loading device and the cutting force hydraulic loading device back up pad 3.
The described bearing unit of making a concerted effort is by the dustproof end cap 28 in left side, the bearing unit shell 29 of making a concerted effort, cooling copper tube 31, bearing seat 33, left side bearing 30, sleeve 32, right side bearing 34, bearing (ball) cover 35, the dustproof end cap 36 in right side and O-ring seal 62 form, described left side bearing 30, sleeve 32 and right side bearing 34 and loading bar 12 interference fit, adopt the less transition fit of mean gap between the outer shroud of left side bearing 30 and right side bearing 34 and the bearing seat 33 or have the clearance fit of less gap value, bearing (ball) cover 35 is fastenedly connected by screw and bearing seat 33, cooling copper tube 31 is enclosed within on the external cylindrical surface of bearing seat 33, bearing unit shell 29 entangles cooling copper tube 31 with joint efforts, its left end is fastenedly connected by screw and bearing seat 33, and the dustproof end cap 28 in left side is fastenedly connected by screw and bearing unit shell with the dustproof end cap 36 in right side.
The described bearing unit location pre-tightening apparatus of making a concerted effort is comprised of locating frame device bracing frame 25, locating device fixed mount 26 and bearing holder (housing, cover) locating rack 27, described locating rack bracing frame 25 is installed on the ground black iron 1, the upper surface of described locating rack bracing frame 25 is fastenedly connected by bolt and locating rack fixed mount 26 lower surfaces, the side of locating rack fixed mount 26 be connected by adjusting bolt with bearing holder (housing, cover) locating rack 27 and the installation site adjustable.
Described radial force charger is by the hydraulic radial charger, No. 1 hydraulic radial charger supporting leg 16, No. 2 hydraulic radial charger supporting legs 19 and hydraulic radial charger back up pad 17 form, described hydraulic radial charger, No. 1 hydraulic radial charger supporting leg 16, No. 2 hydraulic radial charger supporting legs 19 and hydraulic radial charger back up pad 17 and the first are cut the hydraulic loading device in the reasonable load mode, No. 1 cutting force hydraulic loading device supporting leg 2, No. 2 cutting force hydraulic loading device supporting leg 5 is identical with cutting force hydraulic loading device supporting plate structure, described No. 1 hydraulic radial charger supporting leg 16 and No. 2 hydraulic radial charger supporting legs 19 are fixed on the ground black iron 1 by bolt and T-shaped nut, and are bolted to connection with support hydraulic radial charger back up pad 17; The hydraulic radial charger is fixedly connected with hydraulic radial charger back up pad 17 by bolt.
Described axial force bringing device is comprised of swing arm 40, swing arm bracing frame 37, column fixed mount 38, swing arm vertical columns 42, column fixed mount cover plate 41 and upright post sleeve 39, described swing arm bracing frame 37 is fixedly mounted on the ground black iron 1 by bolt and T-shaped nut, described column fixed mount cover plate 41 is fixed on column fixed mount 38 tops, described column fixed mount 38 is fixed on the top of swing arm bracing frame 37, hole interference fit above described swing arm vertical columns 42 and the column fixed mount cover plate 41 is connected, and swing arm 40 is connected with swing arm vertical columns 42 clearance fit.
Described component bearing unit is by 4 bearings, bearing holder (housing, cover) shell 45, No. 1 outer shading ring 47 of bearing, No. 2 outer shading rings 11 of bearing, No. 1 metallic packing ring 49, cartridge sleeve 50 and bearing left and right sides end cap form, described bearing holder (housing, cover) left end cap 43 and bearing holder (housing, cover) right end cap 20 are contained on the loading bar 12 at bearing two ends, and be fixedly connected with bearing holder (housing, cover) shell 45 screw threads, described bearing comprises No. 1 bearing 46 that is contained on the loading bar 12, No. 2 bearings 48, No. 3 bearings 10 and No. 4 bearings 18, between No. 1 bearing 46 and No. 2 bearings 48 the outer shading ring 47 of bearing is housed No. 1, between No. 3 bearings 10 and No. 4 bearings 18 the outer shading ring 11 of bearing is housed No. 2, between No. 2 bearings 48 and No. 3 bearings 10 metallic packing ring 49 is housed successively No. 1, cartridge sleeve 50 and No. 2 metallic packing rings 4, the outer shading ring 47 of described No. 1 bearing and No. 2 outer shading rings 11 of bearing are that the cross section is trapezoidal annulus, outer cylinder surface has ring groove, has simultaneously circle distribution the herringbone hole on a plurality of connection ring grooves and interior survey two inclined-planes.
The utility model compared with prior art the beneficial effects of the utility model is:
1. the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model adopts hydraulic cylinder that the tested loading bar of machine tool chief axis (Simulated Arbor) is simulated dynamic and static cutting force loading, utilize simultaneously dynamometer machine that loading bar is carried out moment of torsion and load, come simulated machine tool main shaft suffered cutting force and cutting moment of torque in true processing work process; By tested machine tool chief axis being carried out the fail-test of Reality simulation operating mode, excite, the fault of exposing product, for reliability growth and the assessment of product provides practical basic data;
2. the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model adopts two kinds of dynamic and static cutting force load modes, is respectively that make a concerted effort load mode and axial force, radial force separated load mode.The load mode of making a concerted effort has the characteristics such as loading system is simple in structure; And axial force, radial force are separated load mode and can effectively be reduced loading system to the upsetting moment of bearing, improve bearing and testing table life-span; Two kinds of load modes are the actual suffered cutting force the during work of simulated machine tool main shaft well;
Machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model adopted travelling table, with the backing plate of T-slot and the parallels of free lifting within the specific limits, reduce the difficulty that right alignment is regulated between dynamometer machine and the machine tool chief axis, simultaneously so that the testing table easy accessibility, be convenient to change the machine tool chief axis of all kinds of models;
Described in the utility model by the cutting force loading section in the machine tool chief axis reliability test bench of electro-hydraulic servo and dynamometer machine mix-loaded be equipped with draw, pressure transducer and displacement transducer, the size of the simulation cutting power of loading be can detect in real time, Real Time Monitoring, feedback and closed-loop control realized; Moment of torsion is equipped with torque sensor and speed probe when loading, and also can realize Real Time Monitoring and closed-loop control to the cutting moment of torque that loads, and charger is had than High loading precision;
5. the loading frequency by the cutting force loading section in the machine tool chief axis reliability test bench of Based on Electro-hydraulic Loading Servo System and dynamometer machine mixing dynamic load described in the utility model is decided on servo-valve and Hydraulic Elements.The utility model adopts dynamometer machine to carry out the machine tool chief axis cutting moment of torque and loads, and it is high that dynamometer machine has absorbed power, and higher rotation speed is high, the highest loading moment of torsion high.The high-revolving machine tool chief axis of centering carries out load test and has more practical significance;
6. the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model is for the machine tool chief axis of different model, only need to change the main spindle box backing plate, main shaft is embraced clamp mechanism, the transition pieces such as loading bar just can carry out the reliability load test to it, have embodied dirigibility and the versatility of this testing table.
Description of drawings
Fig. 1 is that the resultant tool force of the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model loads and the axonometric projection graph of cutting moment of torque charger;
Fig. 2 is that cutting axial force, the radial force of the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model separately loads and the axonometric projection graph of cutting moment of torque charger;
Fig. 3 is the square bearing unit complete section figure that electro-hydraulic servo described in the utility model and dynamometer machine mix the machine tool chief axis reliability test bench of dynamic load;
Fig. 4 is make a concerted effort bearing unit location and the pre-tightening apparatus axonometric drawing of the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model;
Fig. 5 is the cutting force of the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model axial loading system axonometric drawing when separately loading;
Fig. 6 is front view and the axonometric projection graph of the cutting force of the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model axial force bringing device when separately loading;
Fig. 7 is the component bearing unit complete section figure of the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model;
Fig. 8 is cutting force hydraulic loading device back up pad, hydraulic radial charger back up pad, the axial hydraulic charger back up pad axonometric drawing of the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model;
Fig. 9 is the axonometric drawing of the hydraulic loading device of the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model;
Figure 10 is that the axle of the hydraulic loading device of the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model is surveyed explosive view.
Among the figure: 1. black iron, No. 2.1 cutting force hydraulic loading device supporting legs, 3. cutting force hydraulic loading device back up pads, 4.2 number metallic packing ring, No. 5.2 cutting force hydraulic loading device supporting legs, 6. mobile platform bases, 7. mobile platform, 8. dynamometer machine, 9. flexible sheet shaft coupling, No. 10.3 bearings, 11.2 the outer shading ring of number bearing, 12. loading bar, 13. machine tool chief axis, 14. main spindle box backing plates, 15. parallels combination, 16.1 number hydraulic radial charger supporting leg, 17. hydraulic radial charger back up pads, No. 18.4 bearings, 19.2 number hydraulic radial charger supporting leg, 20. the bearing holder (housing, cover) right end cap, 21. metal o-rings, No. 22.2 axial hydraulic charger supporting legs, 23. hydraulic radial charger back up pad, 24.1 number axial hydraulic charger supporting leg, 25. bracing frames, 26. fixed mounts, 27. bearing holder (housing, cover) location pretension frame, the end cap 28. prevent dust in the left side, 29. bearing unit shells, 30. left side bearings, 31. cooling copper tube, 32. sleeve, 33. bearing seats, 34. right side bearings, 35. right side bearing (ball) cover, the end cap 36. prevent dust in the right side, 37. swing arm bracing frames, 38. column fixed mounts, 39. upright post sleeve, 40. swing arm, 41. column fixed mount cover plates, 42. swing arm vertical columns, 43. bearing holder (housing, cover) left end cap, 44. circlip, 45. bearing holder (housing, cover) shells, No. 46.1 bearings, 47.1 the outer shading ring of number bearing, 48.2 number bearing, No. 49.1 metallic packing rings, 50. cartridge sleeve, 51. slide plate, 52. retainer, 53. oscillating bearings, 54. hydraulic cylinders, 55. servo-valve, 56. displacement transducer, 57. displacement sensor brackets, 58. elastic devices, 59. power sensor, 60. load bar, 61. multidiameters, 62. O-ring seals.
Embodiment
Below in conjunction with accompanying drawing the utility model is explained in detail:
Consult Fig. 1, Fig. 2, the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model comprises machine tool chief axis support section, moment of torsion loading section, cutting force loading section.
One, machine tool chief axis support section
Described machine tool chief axis support section comprises main spindle box backing plate 14 and parallels combination 15.
Described main spindle box backing plate 14 is plate structure spare, and there is the T-slot that is parallel to each other on upper plane, and T-shaped groove direction is parallel with the main-shaft axis direction, with the T-shaped groove perpendicular direction on the ground black iron 1; Described parallels combination 15 is CNC milling machine parallels of quadruplet same size, and its model is S83-2, and machine tool chief axis 13 is assemblied on the main spindle box by ring flange, together with the subjects of scroll chuck as this testing table; Main spindle box is fixed on the main spindle box backing plate 14 by bolt and T-nut; The CNC milling machine parallels of quadruplet same size is placed on the Si Jiaochu of main spindle box backing plate 14 lower planes in the parallels combination 15, be used for adjusting the main shaft height, and the T-slot above the assurance main spindle box backing plate 14 is vertical with the T-slot on the ground black iron 1, the T-slot that has on the T-slot that is parallel to the main-shaft axis direction and the ground black iron 1 perpendicular to the main-shaft axis direction is arranged on the main spindle box backing plate 14, and the two cooperation can be when main spindle box is installed be carried out perpendicular to main-shaft axis and is parallel to the position adjustment of main-shaft axis direction main spindle box.
Main spindle box backing plate 14 is fixed on the ground black iron 1 by bolt and T-nut, compresses on the CNC milling machine parallels that is installed in four jiaos of places of main spindle box backing plate 14 lower planes simultaneously.
Two, moment of torsion loading section
Described moment of torsion loading section comprises loading bar 12, flexible sheet shaft coupling 9, dynamometer machine 8, mobile platform 7 and mobile platform base 6.
Described loading bar 12 is multidiameters, and loading bar 12 small end left ends have the round end keyway A type keyway along its axis symmetry; Described mobile platform base 6 is that the cross section is the backing plate of T shape, and four pin places of mobile platform base 6 are distributed with respectively a through hole, is fixed on the ground black iron by bolt and T-nut;
Loading bar 12 large end right-hand members are installed on the scroll chuck of main spindle box, other end small end is that flexible sheet shaft coupling 9 one ends of JM116 are connected by two A type keys and model, and the output shaft of dynamometer machine 8 is connected by two A type keys with the other end of flexible sheet shaft coupling 9; The shaft shoulder of loading bar 12 is used for the location to bearing; That described dynamometer machine 8 the utility model adopt is electric A.C. dynamometer DL662, being bolted on model is on the mobile platform 7 of ZXT200MA06, mobile platform is bolted on the mobile platform base 6, and guarantees that the moving direction of mobile platform 7 is parallel with the machine tool chief axis axis direction; Mobile platform base 6 is placed on the ground black iron 1, and bolt passes the through hole of mobile platform base 6 four pin by T-shaped nut, is fastened on the ground black iron 1; Dynamometer machine 8 is installed on the mobile platform 7, and guarantees that the axis of input shaft of dynamometer machine 8 and the axis of loading bar 12 satisfy right alignment
Requirement, thus can make dynamometer machine 8 carry out the position adjustment along machine tool chief axis 13 axis directions by regulating travelling table 7, and travelling table 7 can manual locking, thereby makes dynamometer machine 8 fixing.
Three, cutting force loading section
The cutting force loading section adopts two kinds of load modes, and the first is the resultant tool force load mode, and the second is that cutting axial force and radial force are separated load mode;
1, described the first resultant tool force load mode comprises the cutting force hydraulic loading device, bearing unit, the bearing unit of making a concerted effort are located pre-tightening apparatus with joint efforts;
With reference to figure 1, described cutting force hydraulic loading device comprises hydraulic loading device, 2, No. 2 cutting force hydraulic loading device supporting legs 5 of No. 1 cutting force hydraulic loading device supporting leg and cutting force hydraulic loading device back up pad 3.
With reference to figure 9, comprise that with reference to the described hydraulic loading device of Figure 10 slide plate 51, retainer 52, oscillating bearing 53, hydraulic cylinder 54, servo-valve 55, displacement sensor bracket 57, elastic device 58 multidiameters 61 and load bar 60 form.
Described slide plate 51 is rectangular slab class formation spares, the upper plane of slide plate 51 is evenly equipped with 2 T-slots from left to right, center-right side 5～20cm place of the lower plane of slide plate 51 arranges a ladder blind hole namely and multidiameter 61 upper ends are equipped with, upper plane and the lower plane of the axis of rotation of ladder blind hole and slide plate 51 are perpendicular, central through hole on the cutting force hydraulic loading device back up pad 3 and the shoulder hole on the slide plate 51 cooperate with the upper end with the lower end of multidiameter 61 respectively, 6 tapped through holes evenly distribute around the slide plate 51 ladder blind holes, by tapped through hole and bolt slide plate 51 and cutting force hydraulic loading device back up pad 3 are interfixed, the degree of tightening by adjusting bolt, can make slide plate 51 around multidiameter 61 rotations, make cutting force hydraulic loading device back up pad 3 and slide plate 51 angled; Slide plate 51 bolts are fixedly connected with retainer 52 with T-shaped nut simultaneously, by the degree of tightening of adjusting bolt, adjust the relative position of retainer 52 and slide plate 51.Described multidiameter 61 is for having the axle of a shaft shoulder, and the shaft shoulder is near the upper end of axle.
Described hydraulic cylinder 54 is selected single-piston rod or double-piston rod-type hydraulic jack, piston rod stretches out from the right-hand member of hydraulic cylinder 54, the left side of hydraulic cylinder 54 is threaded with oscillating bearing 53 threaded end bars, and be hinged on the lower surface of top board in the retainer 52, vertical axis of symmetry of hydraulic cylinder 54 is in vertical plane of symmetry of retainer 52, and the hydraulic cylinder front end is installed displacement sensor bracket 57;
Described displacement sensor bracket 57 other ends have through hole, are used for the inner core of fixed displacement sensor, and the inner core of displacement transducer is also along with movement when piston rod moves, and displacement transducer just can record the displacement of piston rod;
Described elastic device 58 is comprised of with 2 identical nuts of specification left web joint, right web joint, 2 identical sleeve, 2 identical bolts of specification of structure, and wherein: left web joint is identical with right connecting board structure.2 identical bolts of specification insert in the through hole of left web joint and right web joint both sides, the identical sleeve set of 2 structures is fixed together by the identical nut of 2 structures sleeve that left web joint, right web joint is identical with 2 structures on two bolts between left web joint and the right web joint more at last.Threaded hole on the right web joint is threaded with the left end of studs, and the threaded hole on the left web joint is threaded with the piston rod right-hand member of hydraulic cylinder 54.Elastic device 58 can the displacement of absorption portion exciting and can be transmitted power.The natural frequency of elastic device should be greater than excited frequency more than two times;
Described No. 1 cutting force hydraulic loading device supporting leg 2 and No. 2 cutting force hydraulic loading device supporting legs 5 are engine supporting leg P06, and four U-shaped holes are arranged on the bottom, are fixed in ground black iron 1 by bolt;
Described cutting force hydraulic loading device back up pad 3 is rectangular slab class formation spares, the center of cutting force hydraulic loading device back up pad 3 is provided with a central through hole, is evenly distributed with the annular through groove that three sections concentrics are isostructural, be used for erection bolt around the central through hole.The two ends of cutting force hydraulic loading device back up pad 3 have respectively two through holes to be fixed in No. 1 cutting force hydraulic loading device supporting leg 2 and No. 2 cutting force hydraulic loading device supporting legs 5 for passing bolt.
No. 1 cutting force hydraulic loading device supporting leg 2 and No. 2 cutting force hydraulic loading device supporting legs 5 are installed on the ground black iron 1 by bolt and T-shaped nut, and guarantee that the space length of itself and square bearing unit satisfies the status requirement of loading system; Cutting force hydraulic loading device back up pad 3 is installed on No. 1 cutting force hydraulic loading device supporting leg 2 and No. 2 cutting force hydraulic loading device supporting legs 5 by bolt; Hydraulic loading device is fastenedly connected by 3 identical bolt and cutting force hydraulic loading device back up pads 3 of specification; No. 1 hydraulic loading device supporting leg 2, No. 2 cutting force hydraulic loading device supporting legs 5, cutting force hydraulic loading device back up pads 3 should guarantee the hydraulic loading device level, and the load bar 60 that guarantees hydraulic loading device is contour with machine tool chief axis 13 axis, satisfies the requirement that loads resultant tool force by the angle of adjusting between hydraulic loading device and the cutting force hydraulic loading device back up pad 3.
With reference to figure 3, the described bearing unit of making a concerted effort comprises the dustproof end cap 28 in left side, the bearing unit shell 29 of making a concerted effort, cooling copper tube 31, bearing seat 33, left side bearing 30, sleeve 32, right side bearing 34, bearing (ball) cover 35, the dustproof end cap 36 in right side and O-ring seal 62.
The dustproof end cap 36 of the dustproof end cap 28 in described left side and right side is square iron plates, and inside is shoulder hole, and inner surface has trapezoidal annular groove; The described bearing unit shell 29 of making a concerted effort is trapezoidal iron blocks, and there is shoulder hole inside, and both ends of the surface are evenly equipped with respectively six threaded holes around shoulder hole, and the left side is uniform four other threaded holes also; Described cooling copper tube 31 is spiral fashion copper pipes; Described bearing seat 33 is right cylinder iron blocks, and there is shoulder hole inside, and two ends are evenly distributed in threaded hole around shoulder hole;
Left side bearing 30, sleeve 32, right side bearing 34 are installed on the loading bar 12, interference fit between left side bearing 30 and right side bearing 34 and the loading bar 12, bearing 34 interior rings in right side contact with the shaft shoulder of loading bar 12 and locate, left side bearing 30 and right side bearing 34 mounted in pairs, sleeve 32 is installed between the two bearings; Adopt the less transition fit of mean gap between the outer shroud of left side bearing 30 and right side bearing 34 and the bearing seat 33 or have the clearance fit of less gap value, bearing seat 33 cooperates with left side bearing 30 by the ring-shaped step of its endoporus; Bearing (ball) cover 35 is fastenedly connected by screw and bearing seat 33, and bearing (ball) cover 35 left end protruding circular rings withstand the outer shroud of right side bearing 34, and bearing pack is carried out pretension; Cooling copper tube 31 is enclosed within the external cylindrical surface of bearing seat 33; Bearing unit shell 29 entangles cooling copper tube 31 with joint efforts, and its left end is fastenedly connected by screw and bearing seat 33; The dustproof end cap 28 in left side is fastenedly connected by screw and bearing unit shell with the dustproof end cap 36 in right side.
With reference to figure 4, the described bearing unit location pre-tightening apparatus of making a concerted effort comprises locating frame device bracing frame 25, locating device fixed mount 26, bearing holder (housing, cover) locating rack 27.
Described locating rack bracing frame 25 is the T shape box weldments that are welded by five block plates, and four U-shaped holes are arranged at the bottom, and upper surface has four threaded holes to be used for being threaded with the locating device fixed mount; Described locating device fixed mount 26 is to become L shaped by two steel plate vertical weldings together, between two steel plates reinforcement is arranged, and on the left side that bearing locating rack 27 is connected four threaded holes is arranged, and there are four shoulder holes the lower surface that is connected with locating rack bracing frame 25; Described bearing holder (housing, cover) locating rack 27 is weldments that U-shaped steel plate and square plate vertical welding form, and on the right side that locating rack fixed mount 26 is connected four strip holes is arranged, and the strip hole direction is parallel with loading bar 12 axial directions.
Locating rack bracing frame 25 is installed on the ground black iron 1, guarantees that its space length with the bearing unit of making a concerted effort satisfies the status requirement of loading system, and locating rack bracing frame 25 is fixed on the ground black iron 1 by bolt and T-nut simultaneously; The upper surface of locating rack bracing frame 25 is fastenedly connected by bolt and locating rack fixed mount 26 lower surfaces; The strip hole that bolt passes bearing holder (housing, cover) locating rack 27 left sides is fixed on locating device fixed mount 26 left sides, and bearing holder (housing, cover) locating rack 27 carries out position adjustments by adjusting bolt along the strip hole direction; The bearing unit positioning unit should have suitable height with the involutory mechanical axis bearing unit of assurance bearing locating rack energy location with joint efforts, and satisfies positioning requirements.
2, described the second cutting axial force and radial force are separated load mode and are comprised radial force charger, axial force charger and component bearing unit.
With reference to figure 2, described radial force charger comprises hydraulic radial charger, 16, No. 2 hydraulic radial charger supporting legs 19 of No. 1 hydraulic radial charger supporting leg and hydraulic radial charger back up pad 17.
The hydraulic loading device structure that described hydraulic radial charger and the first are cut in the reasonable load mode is similar.
Described No. 1 hydraulic radial charger supporting leg 16 and No. 2 hydraulic radial charger supporting legs 19 are engine supporting leg P06, and four U-shaped holes are arranged on the bottom, are fixed in ground black iron 1 by bolt;
With reference to figure 8, cutting force hydraulic loading device back up pad 3 structures in described radial loaded device back up pad 17 and the first resultant tool force load mode are similar.
No. 1 hydraulic radial charger supporting leg 16 and No. 2 hydraulic radial charger supporting legs 19 are fixed on the ground black iron 1 by bolt and T-shaped nut, and are bolted to connection with support hydraulic radial charger back up pad 17; The hydraulic radial charger is fixedly connected with hydraulic radial charger back up pad 17 by bolt; 16, No. 2 hydraulic radial charger supporting legs 19 of No. 1 hydraulic radial charger supporting leg, hydraulic radial charger back up pad 17 should guarantee the load bar level of hydraulic radial charger, and perpendicular to machine tool chief axis 13 axis, guarantee that simultaneously the piston rod of hydraulic radial charger and machine tool chief axis 13 axis are contour.
With reference to figure 5, described axial force loading section comprises axial hydraulic charger, 24, No. 2 axial hydraulic charger supporting legs 22 of No. 1 axial hydraulic charger supporting leg, axial hydraulic charger back up pad 23, axial force bringing device.
Hydraulic loading device structure in described axial hydraulic charger and the first resultant tool force load mode is similar.
Described No. 1 axial hydraulic charger supporting leg 24 and No. 2 axial hydraulic charger supporting legs 22 are puffer supporting leg P06, and four U-shaped holes are arranged on the bottom, are fixed in ground black iron 1 by bolt;
With reference to figure 8, described axial loading device back up pad 23 is similar with cutting force hydraulic loading device back up pad 3 structures that the first is cut in the reasonable load mode.
No. 1 axial hydraulic charger supporting leg 24 and No. 2 axial hydraulic charger supporting legs 22 are fixed on the ground black iron 1 by bolt and T-shaped nut, and are bolted to connection to hydraulic loading device back up pad 23 with back shaft; The axial hydraulic charger is fixedly connected with axial hydraulic charger back up pad 23 by bolt; 24, No. 2 axial hydraulic charger supporting legs 22 of No. 1 axial hydraulic charger supporting leg, axial hydraulic charger back up pad 23 should guarantee the load bar of axial hydraulic charger parallel with the machine tool chief axis axis, guarantee that simultaneously the load bar of axial hydraulic charger and machine tool chief axis 13 axis are contour; The load bar 60 of axial hydraulic charger withstands the pit of axial force bringing device swing arm 40 1 ends, makes the load bar 60 of axial hydraulic charger withstand the pit of axial force bringing device swing arm 40 constantly by precharge.
With reference to figure 6, described axial force bringing device comprises swing arm 40, swing arm bracing frame 37, column fixed mount 38, swing arm vertical columns 42, column fixed mount cover plate 41 and upright post sleeve 39.
Described swing arm 40 is the U-shaped structural members that form by three square thin-walled Plate Weldings or mechanical connection, and three blocks of square thin-walled steel plates are mutually vertical, and there is the less right cylinder of protrusion two block plate front right sections of level and component bearing unit contact position; Described swing arm bracing frame 37 is the T shape box weldments that are welded by five block plates, and four U-shaped holes are arranged at the bottom, and upper surface has four threaded holes to be fixedly connected with for column fixed mount 38; Described column fixed mount 38 is the U-shaped weldments that are welded by three block plates, and three block plates are mutually vertical; Described swing arm vertical columns 42 is multidiameters, and the shaft shoulder is arranged on the axle; Described column fixed mount cover plate 41 is square plates, and there is respectively through hole in four corners, and the center of column fixed mount cover plate 41 also has a through hole; Described upright post sleeve 39 is tube-like pieces.
Swing arm bracing frame 37 is fixedly mounted on the ground black iron 1 by bolt and T-shaped nut, and guarantees that the space length of itself and round bearing unit satisfies the status requirement of loading system; Column fixed mount 38 is fastenedly connected by bolt and swing arm bracing frame 37; Swing arm vertical columns 42 is connected with column fixed mount 38 interference fit by the holes above the column fixed mount 38, and column fixed mount 38 and swing arm bracing frame 37 should guarantee that the swing arm vertical columns is vertical and perpendicular to machine tool chief axis 13; Swing arm 40 is connected with swing arm vertical columns 42 by circular hole, both clearance fit; Column fixed mount cover plate 41 is by transition fit between the circular hole on it and the swing arm vertical columns 42, and is fastenedly connected by bolt and column fixed mount 38; It is contour that whole axial force bringing device should make swing arm 40 satisfy the axis of its plane of symmetry and machine tool chief axis, guarantees that swing arm 40 can smooth and correct being applied to axial force on the component bearing unit.
With reference to figure 7, described component bearing unit comprises bearing holder (housing, cover) left end cap 43, bearing holder (housing, cover) shell 45, circlip 44, No. 1 bearing 46, No. 2 bearings 48, No. 1 outer shading ring 47 of bearing, No. 1 metallic packing ring 49, cartridge sleeve 50, No. 2 metallic packing rings 4, No. 3 bearings 10, No. 4 bearings 18, No. 2 outer shading rings 11 of bearing, metal o-ring 21 and bearing holder (housing, cover) right end caps 20.
Described bearing left end cap 43 is annulars, and an end has square boss, and uniform four counter sinks of circumferencial direction; Described bearing holder (housing, cover) shell 45 is hollow cylinders, left side even circumferential four threaded holes that distribute, right side circumference six threaded holes that also evenly distribute; The outer shading ring 47 of described No. 1 bearing and No. 2 outer shading rings 11 of bearing are that the cross section is trapezoidal annulus, and outer cylinder surface has ring groove, has simultaneously circle distribution the herringbone hole on eight connection ring grooves and interior survey two inclined-planes; Described bearing holder (housing, cover) right end cap 20 is hollow disks that an end has the dome ring, and even six counter sinks that distribute of circumferencial direction;
No. 3 bearings 10 and No. 4 bearing 18 mounted in pairs, putting the outer shading ring 11 of bearing between the two No. 2, metal o-ring 21 is withstood in the left side of No. 4 bearings 18 simultaneously, the shaft shoulder of loading bar 12 is withstood on the right side of metal o-ring 21, interference fit between No. 3 bearings 10 and No. 4 bearings 18 and the loading bar 12, and adopt the less transition fit of mean gaps or have the clearance fit of less gap value with bearing holder (housing, cover) shell 45; The annulus of the projection of No. 2 metallic packing rings 4 withstands the left side of No. 3 bearing 10 interior rings, and No. 2 metallic packing ring 4 adopts the less transition fit of mean gap or has the clearance fit of less gap value with bearing holder (housing, cover) shell 45; Cartridge sleeve 50 is contained on the loading bar 12 and the left side of withstanding No. 2 metal o-rings 62, and No. 1 metallic packing ring 49 mounting meanss are opposite with No. 2 metallic packing rings 4, and a side is withstood cartridge sleeve 50; No. 1 bearing 46 and No. 2 bearing 48 mounted in pairs, and the outer shading ring 47 of bearing is installed between the two No. 1, and the interior ring of No. 2 bearings 48 withstands the left side of No. 1 metallic packing ring 49, interference fit between No. 1 bearing 46 and No. 2 bearings 48 and the loading bar 12, and adopt the less transition fit of mean gaps or have the clearance fit of less gap value with bearing holder (housing, cover) shell 45; Circlip 44 is installed in the left side of No. 1 bearing 46; Bearing holder (housing, cover) right end cap 20 is bolted connection with bearing holder (housing, cover) shell 45, and the dome ring of one end and metal o-ring 21 clearance fit; Bearing left end cap 43 right side dome rings withstand the outer shroud of No. 1 bearing 46, and are fastenedly connected by screw and bearing holder (housing, cover) shell 45.
Principle of work by the machine tool chief axis reliability test bench of electro-hydraulic servo and dynamometer machine mix-loaded:
Consult Fig. 1, consult Fig. 2, the schematic diagram when having provided the machine tool chief axis load test among the figure.Before test, first according to dynamic and static cutting force size and direction, adjust position and the angle of hydraulic loading device, successfully square shaped bearing unit or round bearing unit load to make the cutting force charger.Control by upper industrial computer at last, selected certain parameter is passed through RS-232C port and the next Dynamometer Control instrument at VB control interface, the communication of servo valve control device, Dynamometer Control instrument control dynamometer machine applies moment of torsion for the loading bar that rotates, torque sensor and speed probe detect signal and feed back to upper industrial computer by signal amplifier and A/D card, carry out closed-loop control, pressure transducer on the simultaneously upper industrial computer collection hydraulic loading device and the feedback signal of displacement transducer, hydraulic loading device is carried out closed-loop control, and whole control procedure is Real Time Monitoring.Simultaneously upper industrial computer control cooler provides the wind cooling to dynamometer machine, so that dynamometer machine can turn round for a long time normally.
Machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded described in the utility model is when carrying out fail-test to machine tool chief axis, and the cutting operating mode of simulation sets the cutting force charger as required.Set the parameters such as loading force, vibration frequency, loading waveform, load time, loading moment of torsion and machine spindle speed at the VB interface, after on-test, the rotating speed of upper industrial computer control machine tool chief axis, control simultaneously hydraulic loading system and torque loading system, after loading procedure finishes, servo valve control hydraulic loading system loading head is retracted, and stops simultaneously torque loading system.
Embodiment described in the utility model can understand and use the utility model for the ease of these those skilled in the art, is a kind of more specific technical scheme and unrestricted.If relevant technician in the situation that adhere to that the utility model basic technical scheme makes that the equivalent structure that does not need through creative work changes or various modification all in protection domain of the present utility model.
Claims (11)
1. by the machine tool chief axis reliability test bench of electro-hydraulic servo and dynamometer machine mix-loaded, mainly formed by machine tool chief axis support section, moment of torsion loading section and cutting force loading section, it is characterized in that:
Described main shaft support part is comprised of main spindle box backing plate (14) and parallels combination (15), described main spindle box backing plate (14) is plate structure spare, described parallels combination (15) is the CNC milling machine parallels of quadruplet same size, main spindle box backing plate (14) is fixed on the ground black iron (1) by bolt and T-nut, compresses simultaneously to be installed on main spindle box backing plate (14) the lower plane CNC milling machine parallels;
Described moment of torsion loading section is by carry excellent (12) that add coaxial assembling, flexible sheet shaft coupling (9) and dynamometer machine (8) form, described loading bar (12) is multidiameter, its large end is installed on the scroll chuck of main spindle box, small end is connected with an end key of flexible sheet shaft coupling (9), the output shaft of described dynamometer machine (8) is connected with the other end key of flexible sheet shaft coupling (9), dynamometer machine (8) is installed on the mobile platform (7), mobile platform (7) is fixed on the mobile platform base (6), the moving direction of mobile platform (7) is parallel with the machine tool chief axis axis direction, the cross section of mobile platform base (6) is the backing plate of T shape, is fixed on the ground black iron (1);
Described cutting force loading section adopts two kinds of load modes: resultant tool force load mode and cutting axial force are separated load mode with radial force, and described resultant tool force load mode is located pre-tightening apparatus and formed by cutting force hydraulic loading device, make a concerted effort bearing unit and the bearing unit of making a concerted effort; Described cutting axial force is separated load mode with radial force and is comprised of radial force charger, axial force charger and component bearing unit.
2. the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded according to claim 1 is characterized in that:
Described cutting force hydraulic loading device is comprised of hydraulic loading device, No. 1 cutting force hydraulic loading device supporting leg (2), No. 2 cutting force hydraulic loading device supporting legs (5) and cutting force hydraulic loading device back up pad (3), on described cutting force hydraulic loading device back up pad (3) stuck-at-１ cutting force hydraulic loading device supporting leg (2) and No. 2 cutting force hydraulic loading device supporting legs (5), described hydraulic loading device is contained on the cutting force hydraulic loading device back up pad (3).
3. the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded according to claim 1 and 2 is characterized in that:
Described hydraulic loading device is by slide plate (51), retainer (52), oscillating bearing (53), hydraulic cylinder (54), servo-valve (55), displacement sensor bracket (57), elastic device (58), power sensor (59), multidiameter (61) and load bar (60) form, described retainer (52) is installed on the slide plate (51) by bolt and T-shaped nut, the left side of hydraulic cylinder (54) is threaded with the threaded end bar of oscillating bearing (53) of left end, hydraulic cylinder (54) upper surface is hinged on the lower surface of top board in the retainer (52) by oscillating bearing, displacement sensor bracket (57) is fixed on the hydraulic cylinder front end, the displacement transducer piston rod is fixedly connected with hydraulic cylinder (54) piston rod right-hand member, hydraulic cylinder (54) piston rod is threaded with elastic device (58) by its right-hand member, elastic device (58) is connected with power sensor (59) by studs, power sensor (59) is connected with load bar (60) by studs, and servo-valve (55) is installed on the hydraulic cylinder (54);
Described slide plate (51) is a rectangular slab class formation spare, the upper plane of slide plate (51) is provided with 2 parallel T-slots, the lower plane of slide plate (51) be provided with cooperate with multidiameter (61) upper end the ladder blind hole, cutting force hydraulic loading device back up pad (3) is provided with the central through hole that cooperates with the lower end of multidiameter (61), the upper and lower plane of the axis of rotation of described ladder blind hole and slide plate (51) is perpendicular, and slide plate (51) adopts bolt to be fixedly connected with cutting force hydraulic loading device back up pad (3).
4. the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded according to claim 3 is characterized in that:
Described hydraulic cylinder (54) is selected single-piston rod or double-piston rod-type hydraulic jack, piston rod stretches out from the right-hand member of hydraulic cylinder (54), the left side of hydraulic cylinder (54) is threaded with the threaded end bar of the oscillating bearing (53) of left end, the end fixed displacement sensor stand (57) of the piston rod of hydraulic cylinder (54), hydraulic cylinder (54) upper surface is hinged on the lower surface of top board in the retainer (52) by oscillating bearing, vertical axis of symmetry of hydraulic cylinder (54) is in vertical plane of symmetry of retainer (52), retainer (52) is fixed on the slide plate (51) by bolt and T-shaped nut, described displacement sensor bracket (57) other end is provided with through hole, the inner core that is used for the fixed displacement sensor, the inner core of displacement transducer is also along with movement when piston rod moves, and displacement transducer just can record the displacement of piston rod.
5. the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded according to claim 3 is characterized in that:
Described elastic device (58) is comprised of 2 sleeves between identical 2 web joints in front and back of structure and 2 web joints, web joint is provided with 2 through holes, by 2 studs that pass web joint through hole and sleeve web joint and sleeve are fixed together with nut, elastic device (58) is used for the displacement of absorption portion exciting and transmission power, and its natural frequency should be greater than excited frequency more than two times.
6. the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded according to claim 2 is characterized in that:
Described No. 1 cutting force hydraulic loading device supporting leg (2) and No. 2 cutting force hydraulic loading device supporting legs (5) are engine supporting leg P06, and four U-shaped holes are arranged on the bottom, are fixed in ground black iron (1) by bolt;
Be evenly distributed with the annular through groove that three sections concentrics are isostructural, be used for erection bolt around described cutting force hydraulic loading device back up pad (3) central through hole, cutting force hydraulic loading device back up pad (3) is bolted on No. 1 cutting force hydraulic loading device supporting leg (2) and No. 2 cutting force hydraulic loading device supporting legs (5); Described hydraulic loading device is fastenedly connected by bolt and cutting force hydraulic loading device back up pad (3), No. 1 hydraulic loading device supporting leg (2), No. 2 cutting force hydraulic loading device supporting legs (5), cutting force hydraulic loading device back up pad (3) should guarantee the hydraulic loading device level, and guarantee that the load bar (60) of hydraulic loading device and machine tool chief axis (13) axis are contour, satisfy the requirement that loads resultant tool force by the angle of adjusting between hydraulic loading device and the cutting force hydraulic loading device back up pad (3).
7. the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded according to claim 1 is characterized in that:
The described bearing unit of making a concerted effort is by the dustproof end cap (28) in left side, the bearing unit shell (29) of making a concerted effort, cooling copper tube (31), bearing seat (33), left side bearing (30), sleeve (32), right side bearing (34), bearing (ball) cover (35), end cap (36) and O-ring seal (62) composition prevent dust on the right side, described left side bearing (30), sleeve (32) and right side bearing (34) and loading bar (12) interference fit, adopt the less transition fit of mean gap between the outer shroud of left side bearing (30) and right side bearing (34) and the bearing seat (33) or have the clearance fit of less gap value, bearing (ball) cover (35) is fastenedly connected by screw and bearing seat (33), cooling copper tube (31) is enclosed within on the external cylindrical surface of bearing seat (33), bearing unit shell (29) entangles cooling copper tube (31) with joint efforts, its left end is fastenedly connected by screw and bearing seat (33), and the left side dustproof end cap (36) in end cap (28) and right side that prevents dust is fastenedly connected by screw and bearing unit shell.
8. the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded according to claim 1 is characterized in that:
The described bearing unit location pre-tightening apparatus of making a concerted effort is comprised of locating frame device bracing frame (25), locating device fixed mount (26) and bearing holder (housing, cover) locating rack (27), described locating rack bracing frame (25) is installed on the ground black iron (1), the upper surface of described locating rack bracing frame (25) is fastenedly connected by bolt and locating rack fixed mount (26) lower surface, the side of locating rack fixed mount (26) be connected by adjusting bolt with bearing holder (housing, cover) locating rack (27) and the installation site adjustable.
9. the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded according to claim 1 is characterized in that:
Described radial force charger is by the hydraulic radial charger, No. 1 hydraulic radial charger supporting leg (16), No. 2 hydraulic radial charger supporting legs (19) and hydraulic radial charger back up pad (17) form, described hydraulic radial charger, No. 1 hydraulic radial charger supporting leg (16), No. 2 hydraulic radial charger supporting legs (19) and hydraulic radial charger back up pad (17) and the first are cut the hydraulic loading device in the reasonable load mode, No. 1 cutting force hydraulic loading device supporting leg (2), No. 2 cutting force hydraulic loading device supporting legs (5) are identical with cutting force hydraulic loading device supporting plate structure, described No. 1 hydraulic radial charger supporting leg (16) and No. 2 hydraulic radial charger supporting legs (19) are fixed on the ground black iron (1) by bolt and T-shaped nut, and are bolted to connection with support hydraulic radial charger back up pad (17); The hydraulic radial charger is fixedly connected with hydraulic radial charger back up pad (17) by bolt.
10. the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded according to claim 1 is characterized in that:
Described axial force bringing device is by swing arm (40), swing arm bracing frame (37), column fixed mount (38), swing arm vertical columns (42), column fixed mount cover plate (41) and upright post sleeve (39) form, described swing arm bracing frame (37) is fixedly mounted on the ground black iron (1) by bolt and T-shaped nut, described column fixed mount cover plate (41) is fixed on column fixed mount (38) top, described column fixed mount (38) is fixed on the top of swing arm bracing frame (37), hole interference fit above described swing arm vertical columns (42) and the column fixed mount cover plate (41) is connected, and swing arm (40) is connected with swing arm vertical columns (42) clearance fit.
11. the machine tool chief axis reliability test bench by electro-hydraulic servo and dynamometer machine mix-loaded according to claim 1 is characterized in that:
Described component bearing unit is comprised of 4 bearings and bearing left and right sides end cap, described bearing holder (housing, cover) left end cap (43) and bearing holder (housing, cover) right end cap (20) are contained on the loading bar (12) at bearing two ends, and be fixedly connected with bearing holder (housing, cover) shell (45) screw thread, described bearing comprises No. 1 bearing (46) that is contained on the loading bar (12), No. 2 bearings (48), No. 3 bearings (10) and No. 4 bearings (18), the outer shading ring (47) of bearing is housed between No. 1 bearing (46) and No. 2 bearings (48) No. 1, the outer shading ring (11) of bearing is housed between No. 3 bearings (10) and No. 4 bearings (18) No. 2, between No. 2 bearings (48) and No. 3 bearings (10) No. 1 metallic packing ring (49) is housed successively, cartridge sleeve (50) and No. 2 metallic packing rings (4), the outer shading ring (47) of described No. 1 bearing and No. 2 outer shading rings (11) of bearing are that the cross section is trapezoidal annulus, outer cylinder surface has ring groove, has simultaneously circle distribution the herringbone hole on a plurality of connection ring grooves and interior survey two inclined-planes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220504218 CN202869792U (en) | 2012-09-28 | 2012-09-28 | Electro-hydraulic servo and dynamometer mixed loading-based testing stand for reliability of machine tool main shaft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220504218 CN202869792U (en) | 2012-09-28 | 2012-09-28 | Electro-hydraulic servo and dynamometer mixed loading-based testing stand for reliability of machine tool main shaft |
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| CN202869792U true CN202869792U (en) | 2013-04-10 |
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| CN 201220504218 Withdrawn - After Issue CN202869792U (en) | 2012-09-28 | 2012-09-28 | Electro-hydraulic servo and dynamometer mixed loading-based testing stand for reliability of machine tool main shaft |
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| CN102889983A (en) * | 2012-09-28 | 2013-01-23 | 吉林大学 | Machine tool spindle reliability test bed based on mixed loading of electro-hydraulic servo and dynamometer |
| CN103424219A (en) * | 2013-08-20 | 2013-12-04 | 中国南方航空工业(集团)有限公司 | Dynamometer system |
| CN103471845A (en) * | 2013-09-04 | 2013-12-25 | 青海大学 | Numerical control machine tool main shaft loading device |
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| CN102889983B (en) * | 2012-09-28 | 2014-11-26 | 吉林大学 | Machine tool spindle reliability test bed based on mixed loading of electro-hydraulic servo and dynamometer |
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| CN103471845A (en) * | 2013-09-04 | 2013-12-25 | 青海大学 | Numerical control machine tool main shaft loading device |
| CN107077121B (en) * | 2014-10-17 | 2019-11-08 | 三菱电机株式会社 | Diagnostic device is processed in vibrocutting |
| CN107077121A (en) * | 2014-10-17 | 2017-08-18 | 三菱电机株式会社 | Diagnostic device is processed in vibrocutting |
| CN104458303A (en) * | 2014-11-24 | 2015-03-25 | 吉林大学 | Heavy numerical control vertical lathe reliability test system |
| CN104458303B (en) * | 2014-11-24 | 2017-01-25 | 吉林大学 | Heavy numerical control vertical lathe reliability test system |
| CN104776987A (en) * | 2015-03-20 | 2015-07-15 | 浙江大学 | Main shaft performance testing platform and testing method of testing platform |
| CN105334057A (en) * | 2015-11-25 | 2016-02-17 | 吉林大学 | Reliability test device capable of online simulating dynamic and static cutting forces of motorized spindle |
| CN105334057B (en) * | 2015-11-25 | 2018-02-09 | 吉林大学 | The electro spindle reliability test of online simulation sound state cutting force |
| CN110285957A (en) * | 2019-07-23 | 2019-09-27 | 安徽卓尔航空科技有限公司 | A kind of adjustable platform for propeller performance test |
| CN114993385A (en) * | 2022-07-13 | 2022-09-02 | 浙江金火科技实业有限公司 | Assembly detection device for improving assembly precision of spindle box component of numerically controlled lathe |
| CN114993385B (en) * | 2022-07-13 | 2022-11-11 | 浙江金火科技实业有限公司 | Assembly detection device for improving assembly precision of spindle box component of numerically controlled lathe |
| CN115626260A (en) * | 2022-09-14 | 2023-01-20 | 大连理工大学 | Experiment loading device suitable for ship stern shaft |
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