CN105486500A - Double-hydraulic-loading heavy machine tool tailstock test device - Google Patents
Double-hydraulic-loading heavy machine tool tailstock test device Download PDFInfo
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- CN105486500A CN105486500A CN201610070702.6A CN201610070702A CN105486500A CN 105486500 A CN105486500 A CN 105486500A CN 201610070702 A CN201610070702 A CN 201610070702A CN 105486500 A CN105486500 A CN 105486500A
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- 238000012360 testing method Methods 0.000 title claims abstract description 88
- 238000001514 detection method Methods 0.000 claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 88
- 229910052742 iron Inorganic materials 0.000 claims description 41
- 239000000523 sample Substances 0.000 claims description 40
- 230000009467 reduction Effects 0.000 claims description 29
- 241001503991 Consolida Species 0.000 claims description 28
- 239000002828 fuel tank Substances 0.000 claims description 21
- 239000012530 fluid Substances 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000005693 optoelectronics Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 description 10
- 230000008859 change Effects 0.000 description 9
- 239000003921 oil Substances 0.000 description 6
- 230000002457 bidirectional effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 210000001138 tear Anatomy 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
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Abstract
The invention discloses a double-hydraulic-loading heavy machine tool tailstock test device to overcome problems of less devices of the heavy machine tool tailstock reliability test, failure of simulation of practical condition, and low efficiency. The device comprises a test device driving portion, a test device hydraulic loading portion, and a test device fault detection portion, the test device driving portion is arranged on a foundation via a horizontal platform (2), the test device hydraulic loading portion is arranged at one side of the horizontal platform (2) via a first tailstock hydraulic loading column (20) and a second tailstock hydraulic loading column (12), a first tailstock rotating speed sensor (21), a first tailstock infrared temperature sensor (22), a second tailstock rotating speed sensor (10), and a second tailstock infrared temperature sensor (11) of the test device fault detection portion are arranged on a tailstock, and the first tailstock infrared temperature sensor (22) and the second tailstock infrared temperature sensor (11) face to the end part of the tip of the tailstock.
Description
Technical field
The present invention relates to a kind of test unit be applied in mechanical field, more precisely, the present invention relates to the heavy machine tool tailstock test unit that a kind of Double-hydraulic can simulated the motion of heavy machine tool tailstock, carry out simulating actual condition loading to it and carry out on-line checkingi to its major failure type loads.
Background technology
Numerically-controlled machine is the abbreviation of numerically-controlled machine tool, is a kind of automated machine tool that program control system is housed.Numerically-controlled machine solves the part processing problems of complexity, precision, short run, multi items preferably, is a kind of flexibility, dynamical automated machine tool, represents the developing direction of modern machine, is a kind of typical electromechanical integrated product.Heavy machine tool, as the important numerically-controlled machine of a class, has promoted the development of the downstream industries such as shipbuilding, engineering machinery, Aero-Space, automobile, railway, power equipment, wind power equipment, power-equipment, refrigeration plant and petrochemical equipment." First Five-Year Plan " period, country, in construction 156 major projects, starts to establish the specialist manufacturers that China's first hand produces heavy machine tool specially.After reform and opening-up, China's national economy enters Rapid development stage, especially 15 years since entering 21st century, for heavy machine tool product exploitation provides unprecedented strategic opportunity, the powerful market demand pulls and promotes that the situation that both production and marketing thrive has appearred in heavy machine tool industry.Nowadays the heavy machine tool that China oneself exploitation manufactures and superduty machine tool product, substantially meet key state project needs, and repeatedly create the first in the world of Limit specifications.Heavy machine tool tailstock mainly play a part holding workpiece and end face boring time fixed drill bit.Mainly drive it to rotate by workpiece, because workpiece weight is large, and there is speed discrepancy in rotary course, therefore tailstock centre there are wearing and tearing, the problem such as serious of generating heat.Easily causing tailstock fault along with abrasively accumulating, gently then occurring that machining precision is low, heavy and then causing large-scale workpiece to come off, directly smashing worktable, the serious accident such as even cause casualties.For improving the reliability of heavy machine tool tailstock, reducing its fault and reducing economic loss, in laboratory, carrying out tailstock fail-test, initiatively excite its fault and make improvements significant.Therefore, design one and can simulate the heavy machine tool tailstock course of work, and the testing table loading it and detect has very high construction value.
Summary of the invention
Technical matters to be solved by this invention be overcome heavy machine tool tailstock reliability test few and fail to simulate actual condition, detection means single, only to be loaded by test specimen and the problem of inefficiency single in all kinds of hydraulic loaded process, provide the heavy machine tool tailstock test unit that a kind of Double-hydraulic loads.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize: the heavy machine tool tailstock test unit that described Double-hydraulic loads comprises test unit drive part, test unit hydraulic loaded part and test unit fault detection part; Wherein: test unit hydraulic loaded part comprises mechanical part and hydraulic system part;
Described test unit drive part comprise a heavy machine tool tailstock, black iron, speed reduction unit, motor, loading unit that No. two heavy machine tool tailstocks are identical with 2 structures;
Described speed reduction unit is arranged on the center position of ground black iron, and adopt T-shaped bolt to be connected with Horizon ferropexy, motor output shaft end adopts shaft coupling to be connected with the input shaft end of speed reduction unit, motor is arranged on ground black iron by T-shaped bolt, a heavy machine tool tailstock and No. two heavy machine tool tailstocks are arranged in the output shaft of speed reduction unit and the two ends of central shaft, and central shaft is clamped, the two ends of central shaft are respectively set with a loading unit;
Test unit hydraulic loaded part is arranged on the side of ground black iron by wherein No. one tailstock hydraulic loaded column and No. two tailstock hydraulic loaded columns, a tailstock hydraulic loaded hydraulic cylinder in test unit hydraulic loaded part, identical with 2 structures respectively loading unit in the bottom of the piston rod in No. two tailstock hydraulic loaded hydraulic cylinders contacts and connects, a tailstock hydraulic loaded hydraulic cylinder, No. two tailstock hydraulic loaded hydraulic cylinders are connected with hydraulic system part pipeline, hydraulic system part is arranged in Hydraulic Station casing, Hydraulic Station casing is arranged on the Yi Jiaochu of ground black iron.
A tailstock speed probe in test unit fault detection part and a tailstock infrared temperature sensor are fixed on the top of a heavy machine tool tailstock (1), No. two tailstock speed probes and No. two tailstock infrared temperature sensors are fixed on the top of No. two heavy machine tool tailstocks (8), a tailstock infrared temperature sensor (22), No. two tailstock infrared temperature sensors (11) face a heavy machine tool tailstock (1) successively, the top end of No. two heavy machine tool tailstocks (8), other parts in test unit fault detection part are respectively charged into speed discrepancy testing circuit casing, in a tailstock temperature detection casing and No. two tailstock temperature detection casings, speed discrepancy testing circuit casing and a tailstock temperature detection casing are arranged on the top of a heavy machine tool tailstock, No. two tailstock temperature detection casings are arranged on the top of No. two heavy machine tool tailstocks.
The axis of rotation of the reducer input shaft described in technical scheme is parallel with longitudinal plane of symmetry of ground black iron with the upper workplace of ground black iron; The axis of rotation conllinear of the axis of rotation of the output shaft of motor, the axis of rotation of shaft coupling and reducer input shaft; The axis of rotation conllinear of the axis of rotation of central shaft and a heavy machine tool tailstock centre and No. two heavy machine tool tailstock centres.
Loading unit described in technical scheme comprises bearing outer shading ring, metal o-ring, circlip, left end cap, a bugle contact bearing, bearing holder (housing, cover) shell, two bugle contact bearing and right end caps.Described bearing holder (housing, cover) shell is a tube kind part, bearing holder (housing, cover) shell is sleeved on the two ends of central shaft respectively by a bugle contact bearing and two bugle contact bearings, the outer shading ring of bearing is installed between one bugle contact bearing and two bugle contact bearings, circlip is arranged in the circlip groove on the central shaft on the left of a bugle contact bearing, sealing function is played in the centre that metal o-ring is arranged on two bugle contact bearings and right-hand member, and left end cap and right end cap are arranged on the left and right two ends of bearing holder (housing, cover) shell successively and adopt bolt to be fixedly connected with respectively.
Mechanical part described in technical scheme also comprises No. two hydraulic cylinder x to moving slide board, No. two hydraulic cylinder z to moving slide board, No. two tailstock hydraulic loaded hydraulic cylinders, a hydraulic cylinder z to moving slide board, a tailstock hydraulic loaded hydraulic cylinder and a hydraulic cylinder x to moving slide board.A described hydraulic loaded column and No. two hydraulic loaded columns adopt on the ground black iron that is bolted on rear side of a heavy machine tool tailstock and No. two heavy machine tool tailstocks respectively, a hydraulic loaded column, No. two hydraulic loaded columns are vertical with the upper workplace of ground black iron successively, and the rear long sidewall of the rear wall of a hydraulic loaded column, No. two hydraulic loaded columns and ground black iron is equidistant; A described hydraulic cylinder x adopts bolt to be fixedly mounted on the relative sidewall in the upper end of a tailstock hydraulic loaded column and No. two tailstock hydraulic loaded columns to moving slide board and No. two hydraulic cylinder x to one end of moving slide board successively, and a hydraulic cylinder x aligns to moving slide board and No. two hydraulic cylinder x mutually to moving slide board; A hydraulic cylinder x is vertical with the upper working face of ground black iron to moving slide board with No. two hydraulic cylinder x to moving slide board; A hydraulic cylinder z contact to one end of moving slide board to an end face of moving slide board with a hydraulic loaded x, and adopt bolt both to be connected, No. two hydraulic cylinder z contact to one end of moving slide board to an end face of moving slide board with No. two hydraulic loaded x, and adopt bolt both to be connected, hydraulic cylinder z to moving slide board and No. two hydraulic cylinder z to moving slide board successively with number hydraulic cylinder x to moving slide board and No. two hydraulic cylinder x perpendicular to moving slide board; A tailstock hydraulic loaded hydraulic cylinder and No. two tailstock hydraulic loaded hydraulic cylinders adopt bolt to be fixedly connected on a hydraulic cylinder z to moving slide board and No. two hydraulic cylinder z on the leading flank of moving slide board successively.
Described in technical scheme No. one hydraulic loaded column and No. two hydraulic loaded columns are the case type structural member of the cuboid that structure is identical, the surrounding of the bottom of a hydraulic loaded column and No. two hydraulic loaded columns is provided with rectangular flange dish, and rectangular flange dish is evenly equipped with bolt hole, a described hydraulic cylinder x is rectangular flat class part that structure identical with No. two hydraulic cylinder x to moving slide board to moving slide board, to be provided with the strip through hole of the identical level of two structures be parallel to each other to moving slide board and No. two hydraulic cylinder x to one end of moving slide board at a hydraulic cylinder x, the x of two strip through holes is parallel to a hydraulic cylinder x to the top end face of moving slide board and bottom face to Central Symmetry face, and on, lower strip through hole is equal with the distance between bottom face to the top end face of moving slide board with a hydraulic cylinder x, four bolt holes are furnished with to moving slide board and No. two hydraulic cylinder x equably to the other end of moving slide board at a hydraulic cylinder x.
Described in technical scheme No. one hydraulic cylinder z is rectangle plate parts that structure identical with No. two hydraulic cylinder z to moving slide board to moving slide board, two strip through holes for adopting bolt to fix a tailstock hydraulic loaded hydraulic cylinder and No. two tailstock hydraulic loaded hydraulic cylinders be parallel to each other are provided with vertically to moving slide board No. two hydraulic cylinder z to the center of moving slide board at a hydraulic cylinder z, article two, strip through hole perpendicular to a hydraulic cylinder z to the top end face of moving slide board and bottom face, article two, strip through hole is equal to the distance of the surrounding end face of moving slide board with No. two hydraulic cylinder z with another two strip through holes to the distance of the surrounding end face of moving slide board with a hydraulic cylinder z, to contact to moving slide board and No. two hydraulic cylinder x to moving slide board with a hydraulic cylinder x to moving slide board and No. two hydraulic cylinder z to moving slide board at a hydraulic cylinder z end wall connected directly distributes vertically two for a hydraulic cylinder x to moving slide board, No. two hydraulic cylinder x are to the bolted threaded hole of moving slide board.
Hydraulic system part described in technical scheme includes No. three hydraulic cylinders, No. four hydraulic cylinders, No. five hydraulic cylinders, hydraulic stem end supporting plate, limit switch, pressure difference switch, filtrator, retaining valve, fuel tank, stop valve, gear-type pump, throttling valve, surplus valve, retaining valve and solenoid directional control valves.The oil-in of gear-type pump is connected with fuel tank pipeline, the oil-out of gear-type pump is connected with the oil-in pipeline of retaining valve, the oil-out of retaining valve is connected with the P hydraulic fluid port pipeline of solenoid directional control valve, the oil-out of gear-type pump is connected with the oil-in pipeline of surplus valve simultaneously, the oil-out of surplus valve is connected with fuel tank pipeline, the A hydraulic fluid port of solenoid directional control valve is connected with the cavity of resorption pipeline of No. four hydraulic cylinders, the bottom of the hydraulic stem of No. four hydraulic cylinders is connected in the middle position of hydraulic stem end supporting plate, the two ends of hydraulic stem end supporting plate are fixedly connected with the hydraulic stem of No. three hydraulic cylinders and No. five hydraulic cylinders respectively, the below mounting limit switch of hydraulic stem end supporting plate bottom surface, the oil inlet and outlet of the epicoele of No. three hydraulic cylinders is connected with the epicoele pipeline of a tailstock loading hydraulic cylinder, the oil inlet and outlet of the epicoele of No. five hydraulic cylinders is connected with the epicoele pipeline of No. two tailstock loading hydraulic cylinders, a tailstock loading hydraulic cylinder, the oil inlet and outlet of No. two tailstock loading hydraulic cylinder cavity of resorptions is connected with the B hydraulic fluid port pipeline of solenoid directional control valve, the O hydraulic fluid port of solenoid directional control valve is connected with one end pipeline of filtrator, the other end of filtrator is connected with fuel tank pipeline, one end of pressure difference switch and the oil-in of retaining valve are together connected with one end pipeline of filtrator, the other end of pressure difference switch and the oil-out of retaining valve with and fuel tank pipeline be connected, one end of stop valve is arranged on the case bottom of fuel tank.
Test unit fault detection part described in technical scheme also comprises connecting terminal block, 24V direct supply, digital control system, No. two tailstock comparers, No. two tailstock temperature alarms, speed discrepancy alarm, tailstock comparer, tailstock temperature alarm, hand switch Q, relay switch KM1, relay switch KM2, relay switch KM3, relay coil KM1, relay coil KM2, relay coil KM3, resistance R1 to resistance R8, + 24VDC the terminals of described 24V direct supply, com terminals are connected with two connection terminal electric wires on connecting terminal block, the power cable that 24V direct supply is 220V by another two connection terminals on connecting terminal block and alternating voltage is connected, hand switch Q accesses between 220V AC power and 24V direct supply, relay switch KM1, relay switch KM2 and relay switch KM3 is sequentially connected in series, relay switch KM1, two ends after relay switch KM2 connects with relay switch KM3 are connected with digital control system electric wire by the connection terminal of 2 on connecting terminal block.
The power lead negative pole of No. two tailstock infrared temperature sensors holds electric wire to be connected by the connection terminal of on connecting terminal block with the com of 24V direct supply, the power lead positive pole of No. two tailstock infrared temperature sensors is connected with+24V direct current pressure side the electric wire of 24V direct supply (40) by the connection terminal of on connecting terminal block, the signal output part of No. two tailstock infrared temperature sensors is connected with one end electric wire of resistance R1, the other end of resistance R1 and the end of oppisite phase of No. two tailstock comparers with resistance R2 one end electric wire be connected, the other end of resistance R2 is connected with+24VDC direct current pressure side the electric wire of 24V direct supply by the connection terminal of on connecting terminal block, one end of resistance R4 holds electric wire to be connected by the connection terminal of on connecting terminal block with the com of 24V direct supply, the other end of resistance R4 is connected with one end electric wire of resistance R3 with the in-phase end of No. two tailstock comparers, the other end of resistance R3 holds electric wire to be connected by the connection terminal of on connecting terminal block with the+24VDC of 24V direct supply, the output terminal of No. two tailstock comparers is with being connected with one end electric wire of No. two tailstock temperature alarms with one end of relay coil KM1, the other end of relay coil KM1 is connected with the other end electric wire of No. two tailstock temperature alarms.
No. two described tailstock speed probes, the positive pole of a tailstock speed probe respectively holds electric wire to be connected by a connection terminal of connecting terminal block with the+24VVDC of 24V direct supply, No. two speed probes, a tailstock speed probe negative pole respectively holds electric wire to be connected by the connection terminal of on connecting terminal block with the com of 24V direct supply, the output terminal of No. two speed probes is connected with one end electric wire of speed discrepancy alarm, the output terminal of a tailstock speed probe is connected with one end electric wire of relay coil KM2, the other end of relay coil KM2 is connected with the other end electric wire of speed discrepancy alarm.
The power lead negative pole of a tailstock infrared temperature sensor holds electric wire to be connected by the connection terminal of on connecting terminal block with the com of 24V direct supply, the power lead positive pole of a tailstock infrared temperature sensor is connected with+24V direct current pressure side the electric wire of 24V direct supply by the connection terminal of on connecting terminal block, the output line of a tailstock infrared temperature sensor is connected with one end electric wire of resistance R5, the other end of resistance R5 is with being connected with the end of oppisite phase electric wire of a tailstock comparer with one end of resistance R6, the resistance R6 other end holds electric wire to be connected by the connection terminal of on connecting terminal block with the+24VDC of 24V direct supply, one end of resistance R7 holds electric wire to be connected by the connection terminal of on connecting terminal block with the com of 24V direct supply, the other end of resistance R7 is connected with one end electric wire of resistance R8 with the in-phase end of a tailstock comparer, the other end of resistance R8 holds electric wire to be connected by the connection terminal of on connecting terminal block with the+24VDC of 24V direct supply, the output terminal of a tailstock comparer is with being connected with one end electric wire of a tailstock temperature alarm with one end of relay coil KM3, the other end of relay coil KM3 is connected with the other end electric wire of a tailstock temperature alarm.
Described in technical scheme No. one tailstock speed probe, tailstock infrared temperature sensor, No. two tailstock speed probes and No. two tailstock infrared temperature sensors are all standard component, namely a tailstock infrared temperature sensor and No. two tailstock infrared temperature sensors all adopt model to be the tailstock infrared temperature sensor of MIK-AL-10, and a tailstock speed probe and No. two tailstock speed probes all adopt model to be the optoelectronic reflection type Fibre Optical Sensor of FS-540.
Described relay switch KM1, relay switch KM2, relay switch KM3 are normally closed contact;
Described relay coil KM1, relay coil KM2, relay coil KM3 all adopt model to be the solid-state relay of DA40A.
Compared with prior art the invention has the beneficial effects as follows:
1. the heavy machine tool tailstock test unit that Double-hydraulic of the present invention loads proposes the mode adopting simulated gravity to load on load mode, because what heavy machine tool mainly bore is gravity cutting force phase, force of gravity is very little, so only need loading one gravity vertically downward, changed by free beam and change into corresponding power and be added in two ends.
2. the heavy machine tool tailstock test unit that Double-hydraulic of the present invention loads utilizes motor to realize motion by speed reduction unit to driving two tailstocks in type of drive, the actual condition of simulation tailstock.
3. the heavy machine tool tailstock test unit that Double-hydraulic of the present invention loads achieves and loads two tailstocks simultaneously, is applicable to other simultaneously to the hydraulic system that two objects load simultaneously.
4. the heavy machine tool tailstock test unit of Double-hydraulic loading of the present invention, automatically can run at the state for extended periods of no worker monitor, labour intensity can be reduced, two aspects for heavy machine tool tailstock the most easily breaks down: be first easily occur that tailstock tool is with asynchronous and accelerate the top wearing and tearing of tailstock tool and temperature rise by holding workpiece, and come off due to the excessive workpiece caused that weares and teares, solution is proposed simultaneously for reliability assessment provides practical basic data.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Fig. 1 is the axonometric projection view that bidirectional hydraulic of the present invention loads heavy machine tool tailstock test unit structure composition;
Fig. 2 is that bidirectional hydraulic of the present invention loads test unit hydraulic loaded part-structure schematic diagram in heavy machine tool tailstock test unit;
Fig. 3 is that bidirectional hydraulic of the present invention loads test unit fault detection part structure principle chart in heavy machine tool tailstock test unit;
Full sectional view on the loading unit structure composition front view that Fig. 4 adopts in heavy machine tool tailstock test unit for bidirectional hydraulic of the present invention loads;
Fig. 5 loads the partial sectional view on the vertical view of the central shaft coupling part adopted in heavy machine tool tailstock test unit for bidirectional hydraulic of the present invention;
In figure: 1. a heavy machine tool tailstock, 2. black iron, 3. central shaft, 4. speed reduction unit, 5, hexagonal socket nut, 6. shaft coupling, 7. motor, 8. No. two heavy machine tool tailstocks, 9. loading unit, 10. No. two tailstock speed probes, 11. No. two tailstock infrared temperature sensors, 12. No. two hydraulic loaded columns, 13. No. two hydraulic cylinder x are to moving slide board, 14. No. two hydraulic cylinder z are to moving slide board, 15. No. two tailstock hydraulic loaded hydraulic cylinders, 16. sensor support bases, No. 17. hydraulic cylinder z are to moving slide board, No. 18. tailstock hydraulic loaded hydraulic cylinders, No. 19. hydraulic cylinder x are to moving slide board, No. 20. hydraulic loaded columns, No. 21. tailstock speed probes, No. 22. tailstock infrared temperature sensors, 23. No. three hydraulic cylinders, 24. No. four hydraulic cylinders, 25. No. five hydraulic cylinders, 26. hydraulic stem end supporting plates, 27. limit switches, 28. pressure difference switches, 29. filtrators, No. 30. retaining valves, 31. fuel tanks, 32. stop valves, 33. gear-type pumps, 34. hydraulic lock, 35. surplus valves, 36. No. two retaining valves, 37. solenoid directional control valves, 38. connecting terminal blocks, 40.24V direct supply, 41. the outer shading ring of bearing, 42. digital control systems (symbol NC), 43. metal o-rings, 44. circlips, 45. left end caps, 46. a bugle contact bearing, 47. bearing holder (housing, cover) shells, 48. No. two tailstock comparers, 49. Hydraulic Station casings, 50. No. two tailstock temperature alarms, 51. speed discrepancy alarms, 53. two bugle contact bearings, 54. right end caps, No. 57. tailstock comparers, No. 59. tailstock temperature alarms, 60. speed discrepancy testing circuit casing, No. 61. tailstock temperature detection casings, 62. No. two tailstock temperature detection casings, hand switch Q, relay switch KM1 ~ relay switch KM3, relay coil KM1 ~ relay coil KM3, resistance R1 ~ resistance R8.
Embodiment
Below in conjunction with accompanying drawing, the present invention is explained in detail:
Consult Fig. 1 and Fig. 2, the heavy machine tool tailstock test unit that Double-hydraulic of the present invention loads comprises: test unit drive part, test unit hydraulic loaded part (comprising mechanical part and hydraulic system part) and test unit fault detection part totally three parts.
One. test unit drive part
Consult Fig. 1, described test unit drive part comprise a heavy machine tool tailstock 1, black iron 2, speed reduction unit (centered by output shaft axle 3) 4, shaft coupling 6, motor 7, No. two heavy machine tool tailstocks 8 and loading unit 9.
A described heavy machine tool tailstock 1 and the top of No. two heavy machine tool tailstocks 8 are a taper structure part.The ring flange of a heavy machine tool tailstock 1 and No. two heavy machine tool tailstock 8 bottoms being provided with bolt openings, being connected for carrying out bolt with ground black iron 2.
Consult Fig. 1, Fig. 4 and Fig. 5, the output shaft of described speed reduction unit 4 and central shaft 3, it is a ladder gear shaft class part.For meeting the installation of loading unit 9, the output shaft of speed reduction unit 4 and the two ends of central shaft 3 are designed for the syllogic multidiameter installing loading unit 9 respectively, be provided with again two in the inner side of two syllogic multidiameters for central shaft 3 being arranged on the syllogic multidiameter on speed reduction unit 4 housing, the structural symmetry of the syllogic multidiameter at central shaft 3 two ends is equal.
Described loading unit 9 comprises bearing outer shading ring 41, metal o-ring 43, circlip 44, left end cap 45, bugle contact bearing 46, bearing holder (housing, cover) shell 47, two bugle contact bearing 53 and bearing holder (housing, cover) right end cap 54; Described bearing holder (housing, cover) shell 47 is a tube kind part, the bearing holder (housing, cover) shell 47 that 2 structures are identical is sleeved on the two ends of described central shaft 3 respectively by a bugle contact bearing 46 and two bugle contact bearings 53, the outer shading ring 41 of bearing is installed between one bugle contact bearing 46 and two bugle contact bearings 53, circlip 44 is arranged in the circlip groove on the central shaft on the left of a bugle contact bearing 46, and the end play of a bugle contact bearing 46 and two bugle contact bearings 53 regulates by circlip 44; Sealing function is played in the centre that metal o-ring 43 is arranged on two bugle contact bearings 53 and bearing holder (housing, cover) right end cap 54, and the two ends, left and right of described bearing holder (housing, cover) shell 47 are provided with left end cap 45 and right end cap 54 successively.
Described speed reduction unit 4 is cylinder gear speed reducer, and bottom is provided with corresponding bolt hole and is connected for carrying out bolt with ground black iron 2.
Described motor 7 is servomotor, and bottom is provided with corresponding bolt hole and carries out bolt be connected with ground black iron 2, the output shaft of motor 7 is provided with keyway for matching with shaft coupling 6.
Described speed reduction unit 4 is arranged on the center position of ground black iron 2, the axis of rotation of speed reduction unit 4 input shaft is parallel with longitudinal plane of symmetry of ground black iron 2, for being rotationally connected on the housing that central shaft 3 (i.e. speed reduction unit 4 output shaft) adopts bearing to be arranged on speed reduction unit 4, key is adopted to be connected between motor 7 output terminal and one end of shaft coupling 6, key is adopted to be connected between the other end of shaft coupling 6 and the input shaft end of speed reduction unit 4, the axis of rotation of the output shaft of motor 7, the axis of rotation conllinear of the axis of rotation of shaft coupling 6 and the input shaft of speed reduction unit 4, a heavy machine tool tailstock 1 and No. two heavy machine tool tailstocks 8 are arranged in the two ends of central shaft 3, and central shaft 3 is clamped, the two ends of central shaft 3 are respectively set with a loading unit 9, described motor 7 is arranged on ground black iron 2 by T-shaped bolt, and it is parallel with the upper workplace of ground black iron 2, wherein, the output shaft of speed reduction unit 4 and the axis of rotation of central shaft 3 and a heavy machine tool tailstock 1 and the top axis of rotation conllinear of No. two heavy machine tool tailstocks 8.Speed reduction unit 4 is connected by T-shaped bolt with ground black iron 2, and the axis of rotation of the axis of rotation of central shaft 3 and a heavy machine tool tailstock 1, No. two heavy machine tool tailstocks 8 is in longitudinal plane of symmetry of ground black iron 2, and parallel with the upper workplace of ground black iron 2.
The rotation of the motor 7 in described test unit drive part drives the rotation of shaft coupling 6, the rotation of shaft coupling 6 drives the rotation of the input shaft of speed reduction unit 4, through the transmission of what gear pair, the output shaft of speed reduction unit 4 and central shaft 3 drive the tailstock centre on a heavy machine tool tailstock 1 at two ends and No. two heavy machine tool tailstocks 8 to rotate.Serve the simulation to actual heavy machine tool tailstock operating mode.
Two, test unit hydraulic loaded part
The gravity for clamped workpiece that described heavy machine tool tailstock mainly bears in actual condition, bear the cutting force that holding workpiece gravity bears much larger than workpiece, therefore described test unit hydraulic loaded part adopts simulated gravity to load, namely applying one power vertically downward, changes into corresponding power by free beam and is added in two ends.
Consult Fig. 1, described test unit hydraulic loaded part comprises mechanical part and hydraulic system part.
Described mechanical part comprises No. two tailstock hydraulic loaded columns 12, No. two hydraulic cylinder x to moving slide board 13, No. two hydraulic cylinder z to moving slide board 14, No. two tailstock hydraulic loaded hydraulic cylinders 15, hydraulic cylinder z to moving slide board 17, tailstock hydraulic loaded hydraulic cylinder 18, hydraulic cylinder x to moving slide board 19 and a tailstock hydraulic loaded column 20.
A described tailstock hydraulic loaded hydraulic cylinder 18 and No. two tailstock hydraulic loaded hydraulic cylinders 15 are identical single-piston rod formula hydraulic cylinder, piston rod stretches out from the bottom of hydraulic cylinder, and the rear wall (deviating from central axis) of a tailstock hydraulic loaded hydraulic cylinder 18 is provided with six threaded holes for being connected to moving slide board 17 with a hydraulic cylinder z.Equally, the rear wall (deviating from central axis) of No. two tailstock hydraulic loaded hydraulic cylinders 15 is provided with six threaded holes for being connected to moving slide board 14 with No. two hydraulic cylinder z.
A described hydraulic cylinder z is rectangle plate parts that structure identical with No. two hydraulic cylinder z to moving slide board 14 to moving slide board 17.Two strip through holes be parallel to each other are provided with to moving slide board 17 and No. two hydraulic cylinder z vertically to the center of moving slide board 14 at a hydraulic cylinder z, what realize a tailstock hydraulic loaded hydraulic cylinder 18 and No. two tailstock hydraulic loaded hydraulic cylinders 15 for adopting bolt is fixing, article two, strip through hole perpendicular to a hydraulic cylinder z to the top end face of moving slide board 17 and bottom face, article two, strip through hole is equal to the distance of the surrounding end face of moving slide board 14 with No. two hydraulic cylinder z with another two strip through holes to the distance of the surrounding end face of moving slide board 17 with a hydraulic cylinder z.Two threaded holes that the end wall connected directly distributes vertically are contacted to moving slide board 19 and No. two hydraulic cylinder x to moving slide board 13 with a hydraulic cylinder x to moving slide board 17 and No. two hydraulic cylinder z to moving slide board 14, for being connected to moving slide board 13 bolt to moving slide board 19, No. two hydraulic cylinder x with a hydraulic cylinder x at a hydraulic cylinder z.
A described hydraulic cylinder x is rectangular flat class part that structure identical with No. two hydraulic cylinder x to moving slide board 13 to moving slide board 19, to be provided with the strip through hole of the identical level of two structures be parallel to each other to moving slide board 19 and No. two hydraulic cylinder x to one end of moving slide board 13 at a hydraulic cylinder x, the x of two strip through holes is parallel to a hydraulic cylinder x to the top end face of moving slide board 19 and bottom face to Central Symmetry face, and bar hole is equal with the distance between bottom face to the top end face of moving slide board 19 with a hydraulic cylinder x up and down, simultaneously equably be furnished with four bolt holes to moving slide board 19 and No. two hydraulic cylinder x to the other end of moving slide board 13 at a hydraulic cylinder x.
A described tailstock hydraulic loaded column 20 and No. two tailstock hydraulic loaded columns 12 are the case type structural member of the cuboid that structure is identical, the surrounding of the bottom of a tailstock hydraulic loaded column 20 and No. two tailstock hydraulic loaded columns 12 is provided with rectangular flange dish, rectangular flange dish is evenly equipped with bolt hole, adopts bolt to be connected with ground black iron 2 successively by a tailstock hydraulic loaded column 20, No. two tailstock hydraulic loaded columns 12.
A described hydraulic loaded column 20 and No. two hydraulic loaded columns 12 adopt bolt respectively, nut is fixed on a heavy machine tool tailstock 1 and on ground black iron 2 on rear side of No. two heavy machine tool tailstocks 8, a hydraulic loaded column 20, No. two hydraulic loaded columns 12 are vertical with the upper workplace of ground black iron 2 successively, and the rear long sidewall of the rear wall of a hydraulic loaded column 20, No. two hydraulic loaded columns 12 and ground black iron 2 is equidistant.
A described hydraulic cylinder x adopts bolt to be fixedly mounted on the upper end of a tailstock hydraulic loaded column 20 and No. two tailstock hydraulic loaded columns 12 to moving slide board 19 and No. two hydraulic cylinder x to one end of moving slide board 13 respectively, exactly, hydraulic cylinder x is fixedly mounted on to moving slide board 19 and No. two hydraulic cylinder x to moving slide board 13 on a tailstock hydraulic loaded column 20 sidewall relative with No. two tailstock hydraulic loaded column 12 upper ends, and a hydraulic cylinder x aligns to moving slide board 19 and No. two hydraulic cylinder x mutually to moving slide board 13; A hydraulic cylinder x is vertical with the working face of ground black iron 2 to moving slide board 13 with No. two hydraulic cylinder x to moving slide board 19; a described tailstock hydraulic loaded z contacts to one end of moving slide board 19 to an end face of moving slide board 17 with a hydraulic loaded x, and adopt bolt both to be connected, the diameter of nuts need be greater than and is distributed in the width of a tailstock hydraulic loaded x to two bar holes on moving slide board 19 one end, No. two tailstock hydraulic loaded z contact to one end of moving slide board 13 to an end face of moving slide board 14 with No. two hydraulic loaded x, and adopt bolt both to be connected, the diameter of nuts need be greater than and is distributed in the width of No. two tailstock hydraulic loaded x to two bar holes on moving slide board 13 one end, a tailstock hydraulic loaded z to moving slide board 14 to moving slide board 17 and No. two tailstock hydraulic loaded z can move to two bar holes on moving slide board 13 along a tailstock hydraulic loaded x to moving slide board 19 and No. two hydraulic loaded x and carry out position adjustment respectively, tailstock hydraulic loaded z to moving slide board 17 and No. two tailstock hydraulic loaded z to moving slide board 14 respectively with numbers tailstock hydraulic loaded x to moving slide board 19 and No. two tailstock hydraulic loaded x perpendicular to moving slide board 13, a tailstock hydraulic loaded hydraulic cylinder 18 and No. two tailstock hydraulic loaded hydraulic cylinders 15 are fastened on a tailstock hydraulic cylinder z to moving slide board 17 and No. two tailstock hydraulic cylinder z on the front surface of moving slide board 14 respectively by bolt, and the upper and lower position of a tailstock hydraulic loaded hydraulic cylinder 18 and No. two tailstock hydraulic loaded hydraulic cylinders 15 can adjust to two strip through holes on moving slide board 14 along a tailstock hydraulic cylinder z to moving slide board 17 and No. two tailstock hydraulic cylinder z.
Described No. two tailstock hydraulic loaded hydraulic cylinders 15, tailstock hydraulic loaded hydraulic cylinder 18 selects single piston-type hydraulic cylinder or double-piston rod-type hydraulic cylinder, piston rod stretches out downwards, and longitudinal axis of symmetry of No. two tailstock hydraulic loaded hydraulic cylinders 15, tailstock hydraulic loaded hydraulic cylinder 18 is in a tailstock hydraulic cylinder z to moving slide board 17 and No. two tailstock hydraulic cylinder z in the lateral symmetry face of moving slide board 14.The bottom of piston rod acts on loading unit 9.
Consult Fig. 2, the heavy machine tool tailstock test unit that Double-hydraulic of the present invention loads, in order to do load test to two tailstock tools simultaneously, improves test efficiency, therefore test unit hydraulic loaded part is arranged to the hydraulic system that Double-hydraulic loads.
Described hydraulic system part includes No. three hydraulic cylinders 23, No. four hydraulic cylinders 24, No. five hydraulic cylinders 25, hydraulic stem end supporting plate 26, limit switch 27, pressure difference switch 28, filtrator 29, retaining valve 30, fuel tank 31, stop valve 32, gear-type pump 33, throttling valve 34, surplus valve 35, retaining valve 36, solenoid directional control valve 37 and Hydraulic Station casing 49.
The oil-in of gear-type pump 33 is connected with fuel tank 31 pipeline; the oil-out of gear-type pump 33 is connected with the oil-in pipeline of retaining valve 36; the oil-out of retaining valve 36 is connected with the P hydraulic fluid port pipeline of solenoid directional control valve 37; the oil-out of gear-type pump 33 is connected with the oil-in pipeline of surplus valve 35 simultaneously; surplus valve 35 shields when hydraulic system is transshipped, and the oil-out of surplus valve 25 is connected with fuel tank 31 pipeline.The A hydraulic fluid port of solenoid directional control valve 37 is connected with the cavity of resorption pipeline of No. four hydraulic cylinders 24, the bottom of the hydraulic stem of No. four hydraulic cylinders 24 is connected in the middle position of hydraulic stem end supporting plate 26, the two ends of hydraulic stem end supporting plate 26 are fixedly connected with the hydraulic stem of No. three hydraulic cylinders 23 and No. five hydraulic cylinders 25 respectively, No. three hydraulic cylinders 23, No. four hydraulic cylinders 24, No. five hydraulic cylinders 25 are distributed in the upper surface of hydraulic stem end supporting plate 26, the below mounting limit switch 27 of hydraulic stem end supporting plate 26 bottom surface, the oil inlet and outlet of the epicoele of No. three hydraulic cylinders 23 is connected with the epicoele pipeline of a tailstock loading hydraulic cylinder 18, the oil inlet and outlet of the epicoele of No. five hydraulic cylinders 25 is connected with the epicoele pipeline of No. two tailstock loading hydraulic cylinders 15, a tailstock loading hydraulic cylinder 18, the oil inlet and outlet of No. two tailstock loading hydraulic cylinder 15 cavity of resorptions is connected with the B hydraulic fluid port pipeline of solenoid directional control valve 37, the T hydraulic fluid port of solenoid directional control valve 37 is connected with one end pipeline of filtrator 29, the other end of filtrator 29 is connected with fuel tank 31 pipeline, one end of pressure difference switch 28 one end pipeline that is same with the oil-in of retaining valve 30 and filtrator 29 is connected, the other end of pressure difference switch 28 and the oil-out of retaining valve 30 with and fuel tank 31 pipeline be connected, one end of stop valve 32 is arranged on the case bottom of fuel tank 31.Hydraulic system part being connected is placed in Hydraulic Station casing 49, and Hydraulic Station casing 49 is placed on the Yi Jiaochu of ground black iron 2.
Specific works principle is as follows:
First switch on power, press the start button (actuating motor) on operation panel, regulation relief valve 35 is to required pressure, and hydraulic oil pumps from fuel tank 31 by gear-type pump 33.Flow through solenoid directional control valve 37 by retaining valve 36, now solenoid directional control valve 37 left end electromagnet is connected, and the spool of solenoid directional control valve 37 is in left position.The fluid that gear-type pump 33 exports enters the cavity of resorption of No. four hydraulic cylinders 24 by retaining valve 36, solenoid directional control valve 37, No. four hydraulic cylinder 24 cavity of resorption fluid constantly increase, and impel on piston rod and shipper pole hydrodynamic depression bar end supporting plate 26 moves.And the both sides of hydraulic stem end supporting plate 26 simultaneously with No. three hydraulic cylinders 23, the hydraulic stem bottom of No. five hydraulic cylinders 25 is connected, therefore hydraulic stem end supporting plate 26 drives No. three hydraulic cylinders 23, the hydraulic stem of No. five hydraulic cylinders 25 moves simultaneously, make No. three hydraulic cylinders 23, hydraulic oil in No. five hydraulic cylinder 25 epicoeles is pressed into the epicoele of a tailstock hydraulic loaded hydraulic cylinder 18 and the epicoele of No. two tailstock hydraulic loaded hydraulic cylinders 15, and flow, flow velocity is all identical, the end of the hydraulic stem of a tailstock hydraulic loaded hydraulic cylinder 18 and the hydraulic stem of No. two tailstock hydraulic loaded hydraulic cylinders 15 acts on the loading unit 9 at central shaft 3 two ends respectively, cavity of resorption fluid footpath solenoid directional control valve 37 and the filtrator 29 of a tailstock hydraulic loaded hydraulic cylinder 18 and No. two tailstock hydraulic loaded hydraulic cylinders 15 flow back to fuel tank 31, realization recycles.Heavy machine tool tailstock mainly bears the gravity of workpiece in process, and the cutting force that heavy machine tool tailstock carries is very little compared with the gravity bearing workpiece, so only need loading one gravity vertically downward.Described test unit hydraulic loaded part can simulate the load that in the actual process of heavy machine tool, tailstock bears.
Three. test unit fault detection part
With rotation by workpiece for heavy machine tool tailstock centre, easy both appearance rotating speed is asynchronous, and then it is very large to cause tailstock centre to wear and tear, easily there is workpiece obscission, for preventing the generation of this problem, first the speed discrepancy of the top and folded workpiece of tailstock tool will be detected, namely the top speed discrepancy with central shaft 3 of tailstock tool is detected in this experimental provision, and for the loading system two heavy machine tool tailstocks being done to load test of the present invention simultaneously, need in principle to detect the speed discrepancy between two heavy machine tool tailstocks and central shaft respectively.And for the situation that there will not be two heavy machine tool tailstocks that relative centre axle 3 occurs in a flash under actual conditions to occur speed discrepancy simultaneously, the speed discrepancy namely between direct-detection two heavy machine tool tailstock centres.
In addition, for heavy machine tool tailstock, temperature rise is excessive is its another Permanent fault, therefore need detect temperature when two heavy machine tool tailstocks run, to ensure that it is in set point of temperature.
A described tailstock speed probe 21, a tailstock infrared temperature sensor 22, No. two tailstock speed probes 10, No. two tailstock infrared temperature sensors 11 are standard component, it all adopts the magnetometric sensor bearing 16 of standard to be fixed on heavy machine tool tailstock, a tailstock infrared temperature sensor 22, No. two tailstock infrared temperature sensors 11 face heavy machine tool tailstock centre end, model is adopted to be the tailstock infrared temperature sensor 22 of MIK-AL-10 in the embodiment of the heavy machine tool tailstock test unit that described Double-hydraulic loads, model is No. two tailstock infrared temperature sensors 11 of MIK-AL-10, a tailstock speed probe 21, No. two tailstock speed probes 10 adopt model to be the optoelectronic reflection type Fibre Optical Sensor of FS-540.
Consult Fig. 3, described test unit fault detection part comprises No. two tailstock speed probes 10, No. two tailstock infrared temperature sensors 11, a tailstock speed probe 21, a tailstock infrared temperature sensor 22, connecting terminal block 38, 24V direct supply 40, digital control system (symbol NC) 42, No. two tailstock comparers 48, No. two tailstock temperature alarms 50, speed discrepancy alarm 51, a tailstock comparer 57, a tailstock temperature alarm 59, speed discrepancy testing circuit casing 60, a tailstock temperature detection casing 61, No. two tailstock temperature detection casings 62, hand switch Q, relay switch KM1, relay switch KM2, relay switch KM3, relay coil KM1, relay coil KM2, relay coil KM3, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8.
Described speed discrepancy testing circuit casing 60, tailstock temperature detection casing 61, No. two tailstock temperature detection casings 62 are the shell structure part of cuboid, 4 angles of speed discrepancy testing circuit casing 60, tailstock temperature detection casing 61, No. two tailstock temperature detection casings 62 are welded with the bottom foot base for being fixedly connected with respectively, each bottom foot base all have 1 for the manhole of erection bolt.
+ 24VDC terminals, the com terminals of described 24V direct supply 40 are connected with two connection terminal electric wires on connecting terminal block 38,24V direct supply 40 is that 220V power cable is connected by another two connection terminals on connecting terminal block 38 with alternating voltage, hand switch Q accesses between 220V AC power and 24V direct supply 40, and hand switch Q controls the closed of whole circuit and disconnects; Relay switch KM1, relay switch KM2, relay switch KM3 are normally closed contact, and relay switch KM1, relay switch KM2 are sequentially connected in series with relay switch KM3 and are connected with digital control system 42 electric wire by the connection terminal of 2 on connecting terminal block 38.
The power lead negative pole of No. two tailstock infrared temperature sensors 11 holds electric wire to be connected by a connection terminal of connecting terminal block 38 with the com of 24V direct supply 40, the power lead positive pole of No. two tailstock infrared temperature sensors 11 is connected with+24V direct current pressure side the electric wire of 24V direct supply 40 by a connection terminal of connecting terminal block 38, the signal output part of No. two tailstock infrared temperature sensors 11 is connected with one end electric wire of the resistance R1 of No. two tailstock comparer 48 end of oppisite phase, the other end of resistance R1 with resistance R2 one end be connected, namely resistance R1 and resistance R2 connects, the resistance R2 other end is connected with+the 24VDC of 24V direct supply 40 by a connection terminal of connecting terminal block 38, simultaneously between R1 and R2 connecting line, a line is drawn from one end of R1, the end of oppisite phase of access No. two tailstock comparers 48.One end of resistance R4 to be held with the com of 24V direct supply 40 by a connection terminal of connecting terminal block 38 and is connected, it is resistance R3 that the other end is connected with one end of resistance R3, resistance R4 connects, the other end of resistance R3 holds electric wire to be connected by a connection terminal of connecting terminal block 38 with the+24VDC of 24V direct supply 40, simultaneously at resistance R3, between resistance R4, a line is drawn from resistance R4 one end, the in-phase end of access No. two tailstock comparers 48, the output terminal of No. two tailstock comparers 48 is together connected with one end electric wire of No. two tailstock temperature alarms 50 with one end of relay coil KM1, the other end of relay coil KM1 is connected with the other end electric wire of No. two tailstock temperature alarms 50.Be placed in by above circuit in No. two tailstock temperature detection casings 62, No. two tailstock temperature detection casings 62 are bolted on the top of No. two heavy machine tool tailstocks 8;
No. two described tailstock speed probes 10, the positive pole of a tailstock speed probe 21 respectively holds electric wire to be connected by a connection terminal of connecting terminal block 38 with the+24VVDC of 24V direct supply, No. two speed probes 10, tailstock speed probe 21 negative pole respectively holds electric wire to be connected by a connection terminal of connecting terminal block 38 with the com of 24V direct supply 40, the output terminal of No. two speed probes 10 is connected with one end electric wire of speed discrepancy alarm 51, the output terminal of a tailstock speed probe 21 is connected with one end electric wire of relay coil KM2, the other end of relay coil KM2 is connected with the other end electric wire of speed discrepancy alarm 51, be placed in speed discrepancy testing circuit casing 60 after being connected by above circuit, speed discrepancy testing circuit casing 60 is bolted on the top of a heavy machine tool tailstock 1.
The power lead negative pole of a described tailstock infrared temperature sensor 22 holds electric wire to be connected by a connection terminal of connecting terminal block 38 with the com of 24V direct supply 40, the power lead positive pole of a described tailstock infrared temperature sensor 22 is connected with+24V direct current pressure side the electric wire of 24V direct supply 40 by a connection terminal of connecting terminal block 38, the output line of a tailstock infrared temperature sensor 22 is connected with one end electric wire of resistance R5, the other end of resistance R5 is with being connected with the end of oppisite phase electric wire of a tailstock comparer 57 with one end of resistance R6, the resistance R6 other end holds electric wire to be connected by a connection terminal of connecting terminal block 38 with the+24VDC of 24V direct supply 40, one end of resistance R7 holds electric wire to be connected by a connection terminal of connecting terminal block 38 with the com of 24V direct supply 40, the other end is connected with resistance R8, i.e. resistance R7, resistance R8 connects, the other end of resistance R8 holds electric wire to be connected by a connection terminal of connecting terminal block 38 with the+24VDC of 24V direct supply 40, simultaneously at resistance R7, between resistance R8, a line is drawn from resistance R7 one end, the in-phase end of an access tailstock comparer 57, the output terminal of a tailstock comparer 57 is with being connected with one end electric wire of a tailstock temperature alarm 59 with one end of relay coil KM3, the other end of relay coil KM3 is connected with the other end electric wire of a tailstock temperature alarm 59, be placed in a tailstock temperature detection casing 61 after being connected by above circuit, a tailstock temperature detection casing 61 is bolted on the top of a heavy machine tool tailstock 1.
Specific works principle is as follows:
Connecting hand switch Q makes 24V direct supply 40 electricly power for whole circuit.The voltage of No. two tailstock comparer 48 end of oppisite phase just equals the voltage drop of difference on resistance R4 of the voltage of 24V voltage and No. two tailstock infrared temperature sensor 11 output voltages, along with the change of temperature, the magnitude of voltage of No. two tailstock infrared temperature sensor 11 outputs also will certainly change, and causes the magnitude of voltage of end of oppisite phase to change.The value of the value of No. two tailstock comparer 48 in-phase input end voltages depends on R3 and R4.UR＝R3/(R3+R4)*24V。When probe temperature does not exceed in limited time, end of oppisite phase voltage is greater than in-phase end voltage, No. two tailstock comparers 48 export as position at zero point, one end of relay coil KM1 and No. two tailstock temperature alarm 50 two ends do not have electric potential difference, therefore be failure to actuate, if No. two heavy machine tool tailstock 8 temperature are too high, No. two tailstock comparer 48 output voltages increase, the voltage being added in backward end is constantly reduced, when the voltage of backward end is lower than positive terminal voltage, No. two tailstock comparers 48 overturn, No. two tailstock comparer 48 output voltages are noble potential, pressure reduction is there is like this at relay coil KM1 and No. two tailstock temperature alarm 50 two ends, No. two tailstock temperature alarms 50 are reported to the police, relay coil KM1 obtains electric simultaneously, now the relay switch KM1 of relay coil KM1 disconnects, digital control system 42 power-off, namely the system of whole worktable is cut off, serve the effect of monitoring to No. two tailstock temperature and warning.
The voltage of tailstock comparer 48 end of oppisite phase just equals the voltage drop of difference on resistance R5 of the voltage of 24V voltage and tailstock infrared temperature sensor 22 output voltage, along with the change of temperature, the magnitude of voltage of tailstock infrared temperature sensor 22 output also will certainly change, and causes the magnitude of voltage of end of oppisite phase to change.The value of the value of a tailstock comparer 57 in-phase input end voltage depends on R7 and R8.UR＝R7/(R7+R8)*24V。When probe temperature does not exceed in limited time, a tailstock comparer 57 end of oppisite phase voltage is greater than a tailstock comparer 57 in-phase end voltage, a tailstock comparer 57 exports as position at zero point, relay coil KM3 does not have electric potential difference with tailstock temperature alarm 59 two ends, therefore be failure to actuate, if heavy machine tool tailstock 1 temperature is too high, tailstock comparer 57 output voltage increases, the voltage being added in backward end is constantly reduced, when the voltage of tailstock comparer 57 backward end terminal voltage positive lower than a tailstock comparer 57, a tailstock comparer 57 overturns, tailstock comparer 57 output voltage is noble potential, pressure reduction is there is like this at relay coil KM3 and tailstock temperature alarm 59 two ends, a tailstock temperature alarm 59 is reported to the police, relay coil KM3 obtains electric simultaneously, now the relay switch KM3 of relay coil KM3 disconnects, digital control system 42 power-off, namely the system of whole worktable is cut off, serve the effect of monitoring to a tailstock temperature and warning.
When there is not speed discrepancy in a heavy machine tool tailstock 1 and No. two heavy machine tool tailstocks 8, speed discrepancy alarm 51 and relay K M2 two ends do not have pressure drop, when there is speed discrepancy in a heavy machine tool tailstock tailstock 1 and No. two heavy machine tool tailstocks 8, illustrate that a certain tailstock has occurred speed discrepancy relative to intermediate shaft 3, electric potential difference is there is at speed discrepancy alarm 51 and relay K M2 two ends, speed discrepancy alarm 51 is reported to the police, relay coil KM2 obtains electric, its relay switch KM2 disconnects, NC system 42 power-off, namely the system of whole worktable is cut off, serve the effect to speed discrepancy monitoring and warning.
Described three relay switches KM1, KM2, KM3 are connected in series at the two ends of NC system, and namely any one fault goes wrong and all can cut off the system of whole worktable.
In specific implementation process, the device in embodiment can carry out accepting or rejecting or modification as required, and in other words, the present invention can also have other embodiments:
1. the model of the sensor selected by can select different models according to the difference of heavy machine tool tailstock;
2. in the circuit of alarm, add the protective devices such as some such as over-current and-load relays;
But these changes do not change whole structure.
In addition, the embodiment described in the present invention can understand and apply the invention for the ease of these those skilled in the art, is a kind of embodiment of optimization, or perhaps a kind of preferably concrete technical scheme.
In a word, do not need through the equivalent structure change of creative work or various amendment all in protection scope of the present invention if relevant technician makes when adhering to basic technical scheme of the present invention.
Claims (9)
1. a heavy machine tool tailstock test unit for Double-hydraulic loading, is characterized in that, the heavy machine tool tailstock test unit that described Double-hydraulic loads comprises test unit drive part, test unit hydraulic loaded part and test unit fault detection part; Wherein: test unit hydraulic loaded part comprises mechanical part and hydraulic system part;
Described test unit drive part comprise a heavy machine tool tailstock (1), black iron (2), speed reduction unit (4), motor (7), No. two heavy machine tool tailstocks (8) loading unit (9) identical with 2 structures;
Described speed reduction unit (4) is arranged on the center position on ground black iron (2), and adopt T-shaped bolt to be fixedly connected with ground black iron (2), motor (7) output shaft end adopts shaft coupling to be connected with the input shaft end of speed reduction unit (4), motor (7) is arranged on ground black iron (2) by T-shaped bolt, a heavy machine tool tailstock (1) is arranged in the output shaft of speed reduction unit (4) and the two ends of central shaft (3) with No. two heavy machine tool tailstocks (8), and central shaft (3) is clamped, the two ends of central shaft (3) are respectively set with a loading unit (9),
Test unit hydraulic loaded part is arranged on the side on ground black iron (2) by a tailstock hydraulic loaded column (20) wherein and No. two tailstock hydraulic loaded columns (12), a tailstock hydraulic loaded hydraulic cylinder (18) in test unit hydraulic loaded part, identical with 2 structures respectively loading unit (9) in the bottom of the piston rod in No. two tailstock hydraulic loaded hydraulic cylinders (15) contacts and connects, a tailstock hydraulic loaded hydraulic cylinder (18), No. two tailstock hydraulic loaded hydraulic cylinders (15) are connected with hydraulic system part pipeline, hydraulic system part is arranged in Hydraulic Station casing (49), Hydraulic Station casing (49) is placed on the Yi Jiaochu on ground black iron (2),
A tailstock speed probe (21) in test unit fault detection part and a tailstock infrared temperature sensor (22) are fixed on the top of a heavy machine tool tailstock (1), No. two tailstock speed probes (10) are fixed on on the top of No. two heavy machine tool tailstocks (8) with No. two tailstock infrared temperature sensors (11), a tailstock infrared temperature sensor (22), No. two tailstock infrared temperature sensors (11) face a heavy machine tool tailstock (1) successively, the top end of No. two heavy machine tool tailstocks (8), other parts in test unit fault detection part are respectively charged into speed discrepancy testing circuit casing (60), a tailstock temperature detection casing (61) is with No. two tailstock temperature detection casings (62), speed discrepancy testing circuit casing (60) and a tailstock temperature detection casing (61) are arranged on the top of a heavy machine tool tailstock (1), No. two tailstock temperature detection casings (62) are arranged on the top of No. two heavy machine tool tailstocks (8).
2. according to the heavy machine tool tailstock test unit that Double-hydraulic according to claim 1 loads, it is characterized in that, the axis of rotation of described speed reduction unit (4) input shaft is parallel with longitudinal plane of symmetry of ground black iron with the upper workplace on ground black iron (2); The axis of rotation conllinear of the axis of rotation of output shaft of motor (7), the axis of rotation of shaft coupling and speed reduction unit (4) input shaft; The axis of rotation of central shaft (3) and an axis of rotation conllinear that heavy machine tool tailstock (1) is top and No. two heavy machine tool tailstocks (8) are top.
3. according to the heavy machine tool tailstock test unit that Double-hydraulic according to claim 1 loads, it is characterized in that, described loading unit (9) comprises bearing outer shading ring (41), metal o-ring (43), circlip (44), left end cap (45), a bugle contact bearing (46), bearing holder (housing, cover) shell (47), two bugle contact bearings (53) and right end cap (54);
Described bearing holder (housing, cover) shell (47) is a tube kind part, bearing holder (housing, cover) shell (47) is sleeved on the two ends of central shaft (3) respectively by a bugle contact bearing (46) and two bugle contact bearings (53), the outer shading ring (41) of bearing is installed between one bugle contact bearing (46) and two bugle contact bearings (53), circlip (44) is arranged in the circlip groove on the central shaft in bugle contact bearing (46) left side, sealing function is played in the centre that metal o-ring (43) is arranged on two bugle contact bearings (53) and right end cap (54), left end cap (45) and right end cap (54) are arranged on a left side for bearing holder (housing, cover) shell (47) successively, right two ends also adopt bolt to be fixedly connected with respectively.
4. according to the heavy machine tool tailstock test unit that Double-hydraulic according to claim 1 loads, it is characterized in that, described mechanical part also comprises No. two hydraulic cylinder x to moving slide board (13), No. two hydraulic cylinder z to moving slide board (14), No. two tailstock hydraulic loaded hydraulic cylinders (15), a hydraulic cylinder z to moving slide board (17), a tailstock hydraulic loaded hydraulic cylinder (18) and a hydraulic cylinder x to moving slide board (19);
A described hydraulic loaded column (20) and No. two hydraulic loaded columns (12) adopt respectively be bolted to a heavy machine tool tailstock (1) and No. two heavy machine tool tailstocks (8) rear sides ground black iron (2) on, a hydraulic loaded column (20), No. two hydraulic loaded columns (12) are vertical with the upper workplace of ground black iron (2) successively, the rear wall of a hydraulic loaded column (20), No. two hydraulic loaded columns (12) and the rear long sidewall on ground black iron (2) equidistant;
A described hydraulic cylinder x adopts bolt to be fixedly mounted on a tailstock hydraulic loaded column (20) sidewall relative with the upper end of No. two tailstock hydraulic loaded columns (12) to moving slide board (19) and No. two hydraulic cylinder x to one end of moving slide board (13) successively, and a hydraulic cylinder x aligns to moving slide board (19) and No. two hydraulic cylinder x mutually to moving slide board (13), a hydraulic cylinder x is vertical with the upper working face on ground black iron (2) to moving slide board (13) with No. two hydraulic cylinder x to moving slide board (19), hydraulic cylinder z contacts to one end of moving slide board (19) to an end face of moving slide board (17) with a hydraulic loaded x, and adopt bolt both to be connected, No. two hydraulic cylinder z contact to one end of moving slide board (13) to an end face of moving slide board (14) with No. two hydraulic loaded x, and adopt bolt both to be connected, a hydraulic cylinder z is perpendicular to moving slide board (13) with No. two hydraulic cylinder x to moving slide board (14) successively with number hydraulic cylinder x to moving slide board (19) to moving slide board (17) and No. two hydraulic cylinder z, tailstock hydraulic loaded hydraulic cylinder (18) and No. two tailstock hydraulic loaded hydraulic cylinders (15) adopt bolt to be fixedly connected on a hydraulic cylinder z to moving slide board (17) and No. two hydraulic cylinder z on the leading flank of moving slide board (14) successively.
5. according to the heavy machine tool tailstock test unit that Double-hydraulic according to claim 4 loads, it is characterized in that, a described hydraulic loaded column (20) and No. two hydraulic loaded columns (12) are the case type structural member of the identical cuboid of structure, the surrounding of the bottom of a hydraulic loaded column (20) and No. two hydraulic loaded columns (12) is provided with rectangular flange dish, and rectangular flange dish is evenly equipped with bolt hole;
A described hydraulic cylinder x is the rectangular flat class part that structure is identical to moving slide board (19) and No. two hydraulic cylinder x to moving slide board (13), to be provided with the strip through hole of the identical level of two structures be parallel to each other to moving slide board (19) and No. two hydraulic cylinder x to one end of moving slide board (13) at a hydraulic cylinder x, the x of two strip through holes is parallel to a hydraulic cylinder x to the top end face of moving slide board (19) and bottom face to Central Symmetry face, and on, lower strip through hole is equal with the distance between bottom face to the top end face of moving slide board (19) with a hydraulic cylinder x, four bolt holes are furnished with equably to moving slide board (19) and No. two hydraulic cylinder x to the other end of moving slide board (13) at a hydraulic cylinder x.
6. according to the heavy machine tool tailstock test unit that Double-hydraulic according to claim 4 loads, it is characterized in that, a described hydraulic cylinder z is the rectangle plate parts that structure is identical to moving slide board (17) and No. two hydraulic cylinder z to moving slide board (14), two strip through holes for adopting bolt to fix a tailstock hydraulic loaded hydraulic cylinder (18) and No. two tailstock hydraulic loaded hydraulic cylinders (15) be parallel to each other are provided with vertically to moving slide board (17) and No. two hydraulic cylinder z to the center of moving slide board (14) at a hydraulic cylinder z, article two, strip through hole perpendicular to a hydraulic cylinder z to the top end face of moving slide board (17) and bottom face, article two, strip through hole is equal to the distance of the surrounding end face of moving slide board (14) with No. two hydraulic cylinder z with another two strip through holes to the distance of the surrounding end face of moving slide board (17) with a hydraulic cylinder z, to contact to moving slide board (19) and No. two hydraulic cylinder x to moving slide board (13) with a hydraulic cylinder x to moving slide board (17) and No. two hydraulic cylinder z to moving slide board (14) at a tailstock hydraulic loaded z end wall connected directly distributes vertically two for a hydraulic cylinder x to moving slide board (19), No. two hydraulic cylinder x are to moving slide board (13) bolted threaded hole.
7. according to the heavy machine tool tailstock test unit that Double-hydraulic according to claim 1 loads, it is characterized in that, described hydraulic system part includes No. three hydraulic cylinders (23), No. four hydraulic cylinders (24), No. five hydraulic cylinders (25), hydraulic stem end supporting plate (26), limit switch (27), pressure difference switch (28), filtrator (29), retaining valve (30), fuel tank (31), stop valve (32), gear-type pump (33), throttling valve (34), surplus valve (35), retaining valve (36) and solenoid directional control valve (37),
The oil-in of gear-type pump (33) is connected with fuel tank (31) pipeline, the oil-out of gear-type pump (33) is connected with the oil-in pipeline of retaining valve (36), the oil-out of retaining valve (36) is connected with the P hydraulic fluid port pipeline of solenoid directional control valve (37), the oil-out of gear-type pump (33) is connected with the oil-in pipeline of surplus valve (35) simultaneously, the oil-out of surplus valve (35) is connected with fuel tank (31) pipeline, the A hydraulic fluid port of solenoid directional control valve (37) is connected with the cavity of resorption pipeline of No. four hydraulic cylinders (24), the bottom of the hydraulic stem of No. four hydraulic cylinders (24) is connected in the middle position of hydraulic stem end supporting plate (26), the two ends of hydraulic stem end supporting plate (26) are fixedly connected with the hydraulic stem of No. three hydraulic cylinders (23) and No. five hydraulic cylinders (25) respectively, below mounting limit switch (27) of hydraulic stem end supporting plate (26) bottom surface, the oil inlet and outlet of the epicoele of No. three hydraulic cylinders (23) is connected with the epicoele pipeline of a tailstock loading hydraulic cylinder (18), the oil inlet and outlet of the epicoele of No. five hydraulic cylinders (25) is connected with the epicoele pipeline of No. two tailstock loading hydraulic cylinders (15), a tailstock loading hydraulic cylinder (18), the oil inlet and outlet of No. two tailstock loading hydraulic cylinder (15) cavity of resorptions is connected with the B hydraulic fluid port pipeline of solenoid directional control valve (37), the O hydraulic fluid port of solenoid directional control valve (37) is connected with one end pipeline of filtrator (29), the other end of filtrator (29) is connected with fuel tank (31) pipeline, one end of pressure difference switch (28) is together connected with one end pipeline of filtrator (29) with the oil-in of retaining valve (30), the other end of pressure difference switch (28) and the oil-out of retaining valve (30) with and fuel tank (31) pipeline be connected, one end of stop valve (32) is arranged on the case bottom of fuel tank (31).
8. according to the heavy machine tool tailstock test unit that Double-hydraulic according to claim 1 loads, it is characterized in that, described test unit fault detection part also comprises connecting terminal block (38), 24V direct supply (40), digital control system (42), No. two tailstock comparers (48), No. two tailstock temperature alarms (50), speed discrepancy alarm (51), a tailstock comparer (57), a tailstock temperature alarm (59), hand switch Q, relay switch KM1, relay switch KM2, relay switch KM3, relay coil KM1, relay coil KM2, relay coil KM3, resistance R1 is to resistance R8,
+ 24VDC the terminals of described 24V direct supply (40), com terminals are connected with two connection terminal electric wires on connecting terminal block (38), the power cable that 24V direct supply (40) is 220V by another two connection terminals on connecting terminal block (38) and alternating voltage is connected, hand switch Q accesses between 220V AC power and 24V direct supply (40), relay switch KM1, relay switch KM2 and relay switch KM3 is sequentially connected in series, relay switch KM1, two ends after relay switch KM2 connects with relay switch KM3 are connected with digital control system (42) electric wire by 2 connection terminals on connecting terminal block (38),
The power lead negative pole of No. two tailstock infrared temperature sensors (11) holds electric wire to be connected by a connection terminal on connecting terminal block (38) with the com of 24V direct supply (40), the power lead positive pole of No. two tailstock infrared temperature sensors (11) is connected with+24V direct current pressure side the electric wire of 24V direct supply (40) by a connection terminal on connecting terminal block (38), the signal output part of No. two tailstock infrared temperature sensors (11) is connected with one end electric wire of resistance R1, the other end of resistance R1 and the end of oppisite phase of No. two tailstock comparers (48) with resistance R2 one end electric wire be connected, the other end of resistance R2 is connected with+24VDC direct current pressure side the electric wire of 24V direct supply (40) by a connection terminal on connecting terminal block (38), one end of resistance R4 holds electric wire to be connected by a connection terminal on connecting terminal block (38) with the com of 24V direct supply (40), the other end of resistance R4 is connected with one end electric wire of resistance R3 with the in-phase end of No. two tailstock comparers (48), the other end of resistance R3 holds electric wire to be connected by a connection terminal on connecting terminal block (38) with+24VDC of 24V direct supply (40), the output terminal of No. two tailstock comparers (48) is with being connected with one end electric wire of No. two tailstock temperature alarms (50) with one end of relay coil KM1, the other end of relay coil KM1 is connected with the other end electric wire of No. two tailstock temperature alarms (50),
No. two described tailstock speed probes (10), the positive pole of a tailstock speed probe (21) respectively holds electric wire to be connected by a connection terminal of connecting terminal block (38) with+24VVDC of 24V direct supply, No. two speed probes (10), tailstock speed probe (21) negative pole respectively holds electric wire to be connected by a connection terminal on connecting terminal block (38) with the com of 24V direct supply (40), the output terminal of No. two speed probes (10) is connected with one end electric wire of speed discrepancy alarm (51), the output terminal of a tailstock speed probe (21) is connected with one end electric wire of relay coil KM2, the other end of relay coil KM2 is connected with the other end electric wire of speed discrepancy alarm (51),
The power lead negative pole of a tailstock infrared temperature sensor (22) holds electric wire to be connected by a connection terminal on connecting terminal block (38) with the com of 24V direct supply (40), the power lead positive pole of a tailstock infrared temperature sensor (22) is connected with+24V direct current pressure side the electric wire of 24V direct supply (40) by a connection terminal on connecting terminal block (38), the output line of a tailstock infrared temperature sensor (22) is connected with one end electric wire of resistance R5, the other end of resistance R5 is with being connected with the end of oppisite phase electric wire of a tailstock comparer (57) with one end of resistance R6, the resistance R6 other end holds electric wire to be connected by a connection terminal on connecting terminal block (38) with+24VDC of 24V direct supply (40), one end of resistance R7 holds electric wire to be connected by a connection terminal on connecting terminal block (38) with the com of 24V direct supply (40), the other end of resistance R7 is connected with one end electric wire of resistance R8 with the in-phase end of a tailstock comparer (57), the other end of resistance R8 holds electric wire to be connected by a connection terminal on connecting terminal block (38) with+24VDC of 24V direct supply (40), the output terminal of a tailstock comparer (57) is with being connected with one end electric wire of a tailstock temperature alarm (59) with one end of relay coil KM3, the other end of relay coil KM3 is connected with the other end electric wire of a tailstock temperature alarm (59).
9. according to the heavy machine tool tailstock test unit that Double-hydraulic according to claim 8 loads, it is characterized in that, a described tailstock speed probe (21), a tailstock infrared temperature sensor (22), No. two tailstock speed probes (10) are all standard component with No. two tailstock infrared temperature sensors (11), namely tailstock infrared temperature sensor (22) and No. two tailstock infrared temperature sensors (11) all adopt model to be the tailstock infrared temperature sensor of MIK-AL-10, tailstock speed probe (21) and No. two tailstock speed probes (10) all adopt model to be the optoelectronic reflection type Fibre Optical Sensor of FS-540,
Described relay switch KM1, relay switch KM2, relay switch KM3 are normally closed contact;
Described relay coil KM1, relay coil KM2, relay coil KM3 all adopt model to be the solid-state relay of DA40A.
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| CN106679957A (en) * | 2017-01-09 | 2017-05-17 | 吉林大学 | Synchronously-loading heavy-duty horizontal lathe carrier reliability test device and method for lathe carrier reliability test by such device |
| CN112649186A (en) * | 2020-12-28 | 2021-04-13 | 齐重数控装备股份有限公司 | Simulation load trial operation method for numerical control heavy horizontal lathe unpowered tailstock sleeve part |
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