CN204422189U

CN204422189U - There is the electro spindle reliability test bench of fluid pressure type energy regenerating

Info

Publication number: CN204422189U
Application number: CN201520087118.2U
Authority: CN
Inventors: 杨兆军; 李洪洲; 陈菲; 李国发; 王继利; 何佳龙; 阚英男; 陈传海; 杜大伟; 谢群亚
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2015-02-06
Filing date: 2015-02-06
Publication date: 2015-06-24
Anticipated expiration: 2025-02-06

Abstract

The utility model relates to a kind of electro spindle reliability test bench with fluid pressure type energy regenerating being applied to numerically-controlled machine.This testing table comprises electro spindle, electro spindle support section, loading bar, bearing loading unit, radial force loading section, axial force loading section, automatically control section, moment of torsion loading section and hydraulic circuit part.The axial line of electro spindle, loading bar, bearing loading unit and hydraulic pump is coaxial; The load bar of radial force loading section is mutually vertical with the axial line of bearing loading unit; The axis of load bar and the axial line of bearing loading unit of axial loading section are parallel to each other, and electro spindle is connected with the hydraulic pump shaft of moment of torsion loading section by loading bar, spring coupling.The utility model utilizes hydraulic pump, accumulator does load and realizes loading the moment of torsion of electro spindle, utilize hydraulic pump hydraulic oil out to realize loading that is axial, radial force by hydraulic cylinder to electro spindle simultaneously, realize the recycling of energy, reach energy-conservation object.

Description

There is the electro spindle reliability test bench of fluid pressure type energy regenerating

Technical field

The utility model relates to one and is applied to numerically-controlled machine high-speed electric main shaft reliability test device, relates to a kind of electro spindle reliability test bench that can realize dynamic and static cutting force and cutting moment of torque loading to electric main shaft of digital control machine tool with fluid pressure type energy regenerating specifically.

Background technology

Electro spindle is one of numerically-controlled machine key feature, and its reliability level directly affects the reliability of numerically-controlled machine complete machine.Therefore, carry out fail-test to electro spindle to have great importance.Reliability consideration be generally by collecting fault data, modeling and analysis.The acquisition of fault data has two approach.One is obtained by field reliability test, and two is obtain by setting up electro spindle reliability test bench in the lab.For a long time, the research of the laboratory reliability of electro spindle is dry run test mostly, can not the actual condition of analog electrical main shaft.In recent years, some experts, scholar begin one's study and carry out testing laboratory's loading experiment to electro spindle.Such as, electromagnetic loading method, piezoelectric ceramics loading method etc.But these methods all do not consider the problem of energy regenerating.And fail-test usually needs some months, the time of 1 year, even several years gone.For this long fail-test, these methods certainly will cause huge energy dissipation, and this is the unaffordable financial burden of enterprise, directly cause these methods so far cannot at enterprise's spread.

Summary of the invention

The utility model provides and a kind ofly utilizes hydraulic pump, accumulator does load and realizes loading the moment of torsion of electro spindle, utilize hydraulic pump hydraulic oil out by the electro spindle reliability test bench with fluid pressure type energy regenerating of hydraulic cylinder to the loading of electro spindle realization axis, radial force simultaneously, overcome the above-mentioned deficiency of existing electro spindle reliability test bench.

Technical solutions of the utility model accompanying drawings is as follows: this testing table comprises electro spindle (10), electro spindle support section, loading bar (9), bearing loading unit (8), radial force loading section, axial force loading section, automatic control section, this testing table also comprises moment of torsion loading section and the hydraulic circuit part be connected with moment of torsion loading section by pipeline, wherein said moment of torsion loading section comprises torque loading device and supports the hydraulic pump supporting and regulating device of torque loading device, described electro spindle (10), loading bar (9), bearing loading unit (8), the axial line of the hydraulic pump (18) of moment of torsion loading section is coaxial, the axis of No. 1 load bar (29) of radial force loading section is mutually vertical with the axial line of bearing loading unit (8), the axis of No. 2 load bars (44) and the axial line of bearing loading unit (8) of axial loading section are parallel to each other, and described electro spindle (10) is connected with hydraulic pump (18) axle of moment of torsion loading section by loading bar (9), spring coupling (7).

Described torque loading device comprises spring coupling (7), hydraulic pump (18); Through hole is arranged at described hydraulic pump (18) bottom, be bolted on hydraulic pump fixed base plate (23), hydraulic pump (18) axis of rotation is parallel with the upper workplace on ground black iron (6), one end of spring coupling (7) is connected by flat key with the input shaft of hydraulic pump (18), the other end of spring coupling (7) is connected by flat key with one end of loading bar (9), the axis of rotation conllinear of the axis of rotation of described hydraulic pump (18), the axis of rotation of spring coupling (7) and loading bar (9).

Described hydraulic pump supporting and regulating device comprises hydraulic pump arrangement for adjusting height (16) and hydraulic pump double freedom regulating device (15);

Described hydraulic pump arrangement for adjusting height (16) comprises hydraulic pump fixed base plate (23), 4 upper locking nuts (22), 4 lower setting nuts (21), 4 height regulable control screw rod (19) and 4 Horizon ferropexy nuts (20);

Described hydraulic pump fixed base plate (23) is stepped plate class formation part, it is furnished with four threaded holes, fixed by hydraulic pump (18) by bolt, four angles place of the flat board of hydraulic pump fixed base plate (23) is furnished with the through hole for through height regulable control screw rod (19) hydraulic pump fixed base plate (23) being fixed on ground black iron (6);

The lower end that described lower setting nut (21) is arranged on the flat board of hydraulic pump fixed base plate (23) is threaded, by regulating elevational degree of freedom and the rotational freedom of height regulator solution press pump fixed base plate (23) of lower setting nut (21) with height regulable control screw rod (19);

Described hydraulic pump double freedom regulating device (15) comprises two degrees of freedom and regulates support (25), 2 two degrees of freedom adjusting screw(rod)s (24), adjusting handle (26) and 2 T-shaped bolts (27);

Described two degrees of freedom regulates support (25) to be a L-type structural member, being made up of floor and vertical plate, described floor having two regulate support (25) to be fixed on through hole on ground black iron (6) through making two degrees of freedom on T-shaped bolt (27); Described two degrees of freedom regulates the vertical plate two ends of support (25) to be furnished with two threaded holes passed by two degrees of freedom adjusting screw(rod) (24);

Described two degrees of freedom adjusting screw(rod) (24) is multidiameter like members, path external thread section is followed successively by from left end to right-hand member, optical axis section, large footpath external thread section, the right-hand member of two degrees of freedom adjusting screw(rod) (24) has for installing adjusting handle (26) threaded hole perpendicular to axis direction, light shaft section diameter in the middle of two degrees of freedom adjusting screw(rod) (24) is identical with the through-hole diameter on the vertical plate of hydraulic pump fixed base plate (23), and the axial dimension of the optical axis section in the middle of two degrees of freedom adjusting screw(rod) (24) is greater than the thickness of the vertical plate of hydraulic pump fixed base plate (23), optical axis section in the middle of two degrees of freedom adjusting screw(rod) (24) is sleeved in the through hole on the vertical plate of hydraulic pump fixed base plate (23), with the path external thread section of nut at two degrees of freedom adjusting screw(rod) (24), the large footpath external thread section screw thread of two degrees of freedom adjusting screw(rod) (24) regulates the internal thread on the vertical plate of support (25) to be threaded with two degrees of freedom.

Described bearing loading unit (8) comprises left end cap (84), set nut (85), adjusting nut (86), No. 1 bolt (87), left 1 angular contact ball bearing (88), No. 1 inner ring sleeve (89), 1 extra ring set (90), fixing exterior ring cap (91), No. 2 inner ring sleeves (92), spring (93), movable exterior ring cap (94), No. 3 inner ring sleeves (95), 2 extra ring sets (96), No. 2 bolts (78), bearing bridge (82), right end cap (80), O-ring seal (81), right 1 angular contact ball bearing (75), right 2 angular contact ball bearings (66), set bolt (68), left 2 angular contact ball bearings (76),

Described left end cap (84) is in stepped ring forging shape, inner hole wall has the seal groove for placing O-ring seal (81), circumferentially having six is uniformly distributed for making it to be fixed on the through hole on bearing bridge (82) through No. 1 bolt (87), described bearing bridge (82) is rectangle, and there is dead eye center, the both ends of the surface of dead eye respectively have equally distributed threaded hole, for fixing right end cap (80) and left end cap (84) through bolt, and have a threaded hole at bottom surface place for the exterior ring cap (91) that is locked through set bolt (68), described fixing exterior ring cap (91) is annular, its right side is uniformly distributed 3 blind holes for mounting spring (93), excircle has one will be fixed the axial restraint of exterior ring cap (91) blind hole for inserting set bolt (68) head, the left outside ring end face on a described left side 1 angular contact ball bearing (88) and left end cap (84) end contact, have 1 extra ring set (90) and No. 1 inner ring sleeve (89) to separate in the middle of left 1 angular contact ball bearing (88) and left 2 angular contact ball bearings (76), described movable exterior ring cap (94) is annular, and its left side has 3 blind holes be uniformly distributed for mounting spring (93), the described right side 1 angular contact ball bearing (75) and right 2 angular contact ball bearings (66) use in pairs, and centre is provided with No. 3 inner ring sleeves (95) and 2 extra ring sets (96), the left side of No. 2 described inner ring sleeves (92) contacts with the inner ring right side of left 2 angular contact ball bearings (76), and right side contacts with the inner ring left side of right 2 angular contact ball bearings (66), the outer shroud left side of right 2 angular contact ball bearings (66) contacts with movable exterior ring cap (94) right side, and described spring (93) is arranged in the blind hole of fixing exterior ring cap 91 and movable exterior ring cap 94, described angular contact ball bearing (75) inner ring right side, the right side 1 contacts with the shaft shoulder of loading bar (9), described right end cap (80) is in stepped ring forging shape, inner hole wall has the seal groove for placing O-ring seal (81), circumferentially has six through holes be uniformly distributed for No. 2 bolts (78) being fixed on bearing bridge (82), by the pretension amount regulating the position of adjusting nut (86) on loading bar (9) to realize adjustment spring (93), thus regulate the axial displacement of right 1 angular contact ball bearing (75) and right 2 angular contact ball bearings (66).

Described hydraulic circuit part comprises energy regenerating oil circuit, energy recycling oil circuit, auxiliary feed-oil oil circuit and Water-cooling circulating (79);

Described energy regenerating oil circuit comprises hydraulic pump (18), No. 2 oil filters (67), No. 2 pressure units (69), flow sensor (71), the first electricity liquid ratio relief valve (70), No. 1 accumulator (72) and tensimeters (74);

Between the B mouth that No. 2 described oil filters (67) are connected to hydraulic pump (18) and fuel tank oil-in, the B mouth of described the first electricity liquid ratio relief valve (70) is connected with the A mouth of hydraulic pump (18), the A mouth of the first electricity liquid ratio relief valve (70) is directly connected with tank drainback mouth, and No. 2 described pressure units (69) are connected with the A mouth of hydraulic pump (18); Described flow sensor (71) is connected between the B mouth of the second retaining valve (64) and the A mouth of hydraulic pump (18), No. 1 described accumulator (72) is connected with the A mouth of hydraulic pump (18), and described tensimeter (74) is connected with No. 1 accumulator (72);

Described energy recycling oil circuit comprises No. 1 pressure unit (65), radial loaded servo-cylinder (33), the first electrohydraulic servo valve (48), the second electrohydraulic servo valve (34), axially loads servo-cylinder (49), No. 2 accumulators (83), surplus valve (59), the 3rd retaining valve (63), the second retaining valve (64) and the first retaining valves (77);

The A mouth of described the first electrohydraulic servo valve (48) is connected with the A mouth axially loading servo-cylinder (49), the B mouth of the first electrohydraulic servo valve (48) is connected with the B mouth axially loading servo-cylinder (49), the P mouth of the first electrohydraulic servo valve (48) is connected with the A mouth of the A mouth of the second retaining valve (64) and the 3rd retaining valve (63), and the T mouth of the first electrohydraulic servo valve (48) is connected with the A mouth of the first retaining valve (77) and leads to tank drainback mouth, the A mouth of described the second electrohydraulic servo valve (34) is connected with the A mouth of radial loaded servo-cylinder (33), the B mouth of the second electrohydraulic servo valve (34) is connected with the B mouth of radial loaded servo-cylinder (33), the P mouth of the second electrohydraulic servo valve (34) is connected with the A mouth of the A mouth of the second retaining valve (64) and the 3rd retaining valve (63), the T mouth of the second electrohydraulic servo valve (34) is connected with the A mouth of the first retaining valve (77) and leads to tank drainback mouth, the B mouth of described the first retaining valve (77) directly connects tank drainback mouth, No. 1 described pressure unit (65) is connected with the A mouth of the 3rd retaining valve (63), the A mouth of described surplus valve (59) is connected with the A mouth of the 3rd retaining valve (63), the B mouth of surplus valve (59) directly connects the oil return opening of fuel tank, No. 2 described accumulators (83) are connected with the A mouth of the 3rd retaining valve (63),

Described auxiliary feed-oil oil circuit comprises No. 1 oil filter (61), auxiliary hydraulic pump (62), stand-by motor (60) and the second electricity liquid ratio relief valve (73);

The A mouth of described auxiliary hydraulic pump (62) is connected with fuel tank oil-in by No. 1 oil filter (61), the B mouth of auxiliary hydraulic pump (62) is connected with the B mouth of the 3rd retaining valve (63), the input shaft of auxiliary hydraulic pump (62) is connected by shaft coupling with the motor shaft of stand-by motor (60), the A mouth of described the second electricity liquid ratio relief valve (73) is connected with the B mouth of auxiliary hydraulic pump (62), the B mouth of the second electricity liquid ratio relief valve (73) is directly connected with tank drainback mouth, between the A mouth that described No. 1 oil filter (61) is connected to auxiliary hydraulic pump (62) and fuel tank oil-in,

Described Water-cooling circulating (79) is arranged on outside the front end oil circuit oil pipe of the A mouth of the first retaining valve (77).

Described automatic control section mainly comprises industrial computer, electro spindle, moment of torsion loading and water-cooling controller, radial servo controller and axial servo controller;

Wherein said electro spindle, moment of torsion are loaded and are connected with industrial computer by RS232C port with water-cooling controller, described radial servo controller is connected with industrial computer by RS232C port, and described axial servo controller is connected with industrial computer by RS232C port; Described Water-cooling circulating (79) is loaded by electro spindle, moment of torsion and is connected with industrial computer through RS232C port with water-cooling controller.

Described hydraulic pump (18) belongs to moment of torsion loading section and hydraulic circuit part.

Described electro spindle (10) is arranged on electro spindle support section, and wherein said electro spindle support section comprises electro spindle bearing (11), electro spindle cushion block (28);

Described electro spindle bearing (11) is a T-shaped case body structural member, the base plate both sides of electro spindle bearing (11) are furnished with the U-type groove for being fixed on through electro spindle bearing (11) by T-shaped bolt on ground black iron (6), and the upper surface of electro spindle bearing (11) is furnished with T-slot;

Described electro spindle cushion block (28) is a rectangular structure part, electro spindle cushion block (28) is arranged in the middle of electro spindle (10) and electro spindle bearing (11), the upper surface of electro spindle cushion block (28) is parallel with lower surface, electro spindle cushion block (28) upper surface contacts with electro spindle (10) bottom surface, and electro spindle cushion block (28) lower surface contacts with electro spindle bearing (11).

Described radial force loading section comprises radial force and loads bearing (13), radial force charger (12) and radial force loading bracing or strutting arrangement (14);

Described radial force charger (12) is arranged on radial force and loads on bracing or strutting arrangement (14), and described radial force loading bearing (13) is arranged on radial force charger (12) side and radial force charger (12) is hinged by No. 1 hinge (36).

Described axial force loading section comprises axial force and loads bearing (1), axial force charger (2), axial force loading bracing or strutting arrangement (17), axial force loading fork (5), oscillating arm mechanisms bracing frame (3) and oscillating arm mechanisms revolute latch (4);

Described axial force loads fork (5) one end and contacts with bearing loading unit (8), and itself and oscillating arm mechanisms bracing frame (3) are coupled together by oscillating arm mechanisms revolute latch (4) by the other end; Described axial force charger (2) is placed on axial force and loads bracing or strutting arrangement (17) top; It is vertical that axis and the axial force of No. 2 load bars (44) of described axial force charger (2) load fork (5), the front end of No. 2 load bars (44) on it becomes semisphere, and the hemispherical groove that the axial force contacted with No. 2 load bars (44) loads the left surface of fork (5) coordinates; Described axial force charger (2) other end is hinged on axial force by No. 2 hinges (51) and loads on bearing (1).

The beneficial effects of the utility model are:

1. the electro spindle reliability test bench employing hydraulic pump with fluid pressure type energy regenerating described in the utility model carries out the dynamic and static cutting moment of torque in the true working angles of moment of torsion loading simulation to electro spindle.The moment of torsion controlling electro spindle by the output pressure of regulator solution press pump and flow during loading loads.Meanwhile, adopt axial, the radial direction of hydraulic cylinder to electro spindle to carry out cutting force and load dynamic and static cutting force in Reality simulation working angles.Controlled the loading of axial, the radial force of electro spindle by the pressure of electrohydraulic servo valve regulator solution cylinder pressure and flow during loading.By simulation actual cut operating mode, the fault that fail-test, the accelerated life test undertaken can effectively expose and excite electro spindle is loaded, for electro spindle reliability assessment, reliability growth, reliability improved design provide valid data to electro spindle.

2. the electro spindle reliability test bench with fluid pressure type energy regenerating described in the utility model adopts hydraulic pump to carry out moment of torsion to electro spindle to load to be different from and existingly utilize the modes such as electromagnetism loading, piezoelectric ceramics loading.In test, the mechanical energy of tested electro spindle is converted to hydraulic energy through hydraulic pump, this hydraulic energy is axial through oil circuit Direct driver, radial servo hydraulic cylinder is axial to electro spindle, the loading of radial enforcement power, thus achieves the recycling of energy, has saved test energy consumption.For long-term fail-test, this energy regenerating has important realistic price.

3. the moment of torsion loading section had in the electro spindle reliability test bench of fluid pressure type energy regenerating described in the utility model, the parameter such as size, rotating speed of its moment of torsion can regulate according to different operating mode.The amplitude that axial force, radial force load, waveform, frequency also can regulate according to different operating mode.

3. the electro spindle reliability test bench oil circuit with fluid pressure type energy regenerating described in the utility model comprises energy regenerating oil circuit, energy recycling oil circuit and auxiliary feed-oil oil circuit part.In energy regenerating oil circuit, be provided with accumulator, play the effect recovered energy with voltage stabilizing.In auxiliary feed-oil oil circuit, be provided with auxiliary hydraulic pump, when the hydraulic energy changed from the hydraulic pump be connected with electro spindle be not enough to supply axially, hydraulic radial cylinder implements axis to electro spindle, radial force loads time, this hydraulic pump plays trend energy recycling oil circuit fuel feeding, the stability of warranty test and continuity.

4. the electro spindle reliability test bench hydraulic pump loading section with fluid pressure type energy regenerating described in the utility model with the vertical direction and surface level of hydraulic pump axes normal in devise position respectively perpendicular to hydraulic pump axis direction, rotate governor motion, the right alignment high precision that can realize electro spindle and hydraulic pump shaft regulates, decrease in experimentation due to uncertain factor that electro spindle and hydraulic pump disalignment are brought, make experimental situation controlled, more realistic operating mode.

5. electro spindle reliability test bench electro spindle support section, the axial force hydraulic cylinder with fluid pressure type energy regenerating described in the utility model loads support section and radial force hydraulic cylinder and loads support section and devise height, position-adjustable mechanism respectively, the electro spindle making testing table can adapt to different size carries out fail-test, has certain versatility.

Accompanying drawing explanation

Fig. 1 is that the utility model moment of torsion loads, axial force loads, the structural representation of radial force stress state;

Fig. 2 is the axonometric projection graph of the installation of the utility model hydraulic pump and adjustment portion;

Fig. 3 is the axonometric projection graph of the utility model radial force charger and support section thereof;

Fig. 4 is the axonometric projection graph of the utility model axial force charger and support section thereof;

Fig. 5 is that the utility model radial force loads bracing or strutting arrangement partial enlarged drawing;

Fig. 6 is the utility model bearing loading unit cut-open view;

Fig. 7 is the utility model hydraulic circuit Some principles schematic diagram;

Fig. 8 is the structural principle block diagram of the automatic control section of the utility model.

In figure:

1. axial force loads bearing, 2. axial force charger, 3. oscillating arm mechanisms bracing frame, 4. oscillating arm mechanisms revolute latch, 5. axial force loads fork, 6. black iron, 7. spring coupling, 8. bearing loading unit, 9. loading bar, 10. electro spindle, 11. electro spindle bearings, 12. radial force chargers, 13. radial forces load bearing, 14. radial forces load bracing or strutting arrangement, 15. hydraulic pump double freedom regulating devices, 16. hydraulic pump arrangement for adjusting height, 17. axial forces load bracing or strutting arrangement, 18. hydraulic pumps, 19. height regulable control screw rods, 20. Horizon ferropexy nuts, 21. times setting nuts, 22. upper locking nuts, 23. hydraulic pump fixed base plates, 24. two degrees of freedom adjusting screw(rod)s, 25. two degrees of freedom regulate support, 26. adjusting handles, 27.T type bolt, 28. electro spindle cushion blocks, 29.1 number load bar, 30.2 number force snesor, 31.1 number elastic device, 32.1 number piston rod, 33. radial loaded servo-cylinders, 34. second electrohydraulic servo valves, 35.2 number displacement transducer, 36.1 number hinge, No. 37.1 bracing frame upper locking nuts, No. 38.1 support little axle, setting nut under No. 39.1 bracing frames, 40.1 number Rolling bearing, No. 41.1 bracing frame base plates, No. 42.1 bracing frame stiffening plates, No. 43.1 bracing frame back shafts, 44.2 number load bar, 45.1 number force snesor, 46.2 number elastic device, 47.2 number piston rod, 48. first electrohydraulic servo valves, 49. axially load servo-cylinder, 50.1 number displacement transducer, 51.2 number hinge, No. 52.2 bracing frame upper locking nuts, No. 53.2 support little axle, 54.2 number Rolling bearing, No. 55.2 bracing frame back shafts, No. 56.2 bracing frame stiffening plates, setting nut under No. 57.2 bracing frames, No. 58.2 bracing frame base plates, 59. surplus valves, 60. stand-by motors, 61.1 number oil filter, 62. auxiliary hydraulic pumps, 63. the 3rd retaining valves, 64. second retaining valves, 65.1 number pressure unit, 66. right 2 angular contact ball bearings, 67.2 number oil filter, 68. set bolts, 69.2 number pressure unit, 70. first electricity liquid ratio relief valves, 71. flow sensors, 72.1 number accumulator, 73. second electricity liquid ratio relief valves, 74. tensimeters, 75. right 1 angular contact ball bearings, 76. left 2 angular contact ball bearings, 77. first retaining valves, 78.2 number bolt, 79. Water-cooling circulatings, 80. right end caps, 81. O-ring seals, 82. bearing bridge, 83.2 number accumulator, 84. left end caps, 85. set nuts, 86. adjusting nuts, 87.1 number bolt, 88. left 1 angular contact ball bearings, 89.1 number inner ring sleeve, 90.1 extra ring set, 91. fixing exterior ring caps, 92.2 number inner ring sleeve, 93. springs, 94. movable exterior ring caps, 95.3 number inner ring sleeve, 96.2 extra ring set.

Embodiment

Consult Fig. 1, a kind of electro spindle reliability test bench with fluid pressure type energy regenerating, this testing table comprises electro spindle, electro spindle support section, loading bar 9, bearing loading unit, radial force loading section, axial force loading section, automatic control section, it is characterized in that, this testing table also comprises moment of torsion loading section and the hydraulic circuit part be connected with moment of torsion loading section by pipeline, wherein said moment of torsion loading section comprises torque loading device and supports the hydraulic pump supporting and regulating device of torque loading device, described electro spindle 10, loading bar 9, bearing loading unit 8, the axial line of the hydraulic pump 18 of moment of torsion loading section is coaxial, the axis of No. 1 load bar 29 of radial force loading section is mutually vertical with the axial line of bearing loading unit 8, the axis of No. 2 load bars 44 and the axis of bearing loading unit 8 of axial loading section are parallel to each other, and described electro spindle 10 is connected with hydraulic pump 18 axle of moment of torsion loading section by loading bar 9, spring coupling 7.

One, moment of torsion loading section

Consult Fig. 1, Fig. 2, described moment of torsion loading section comprises torque loading device and hydraulic pump supporting and regulating device.

Described torque loading device comprises spring coupling 7, hydraulic pump 18; Through hole is had bottom described hydraulic pump 18, be bolted on hydraulic pump fixed base plate 23, hydraulic pump 18 axis of rotation is parallel with the upper workplace of ground black iron 6, one end of spring coupling 7 is connected by flat key with the input shaft of hydraulic pump 18, the other end of spring coupling 7 is connected by flat key with the right-hand member of loading bar 9, and the axial line of described hydraulic pump 18, the axial line of spring coupling 7 are coaxial with the axial line of loading bar 9.

The hydraulic pump double freedom regulating device 15 that described hydraulic pump supporting and regulating device comprises hydraulic pump arrangement for adjusting height 16 and is arranged on the right side of hydraulic pump arrangement for adjusting height 16.

Described hydraulic pump arrangement for adjusting height 16 comprises hydraulic pump fixed base plate 23,4 upper locking nuts 22,4 lower setting nuts 21,4 height regulable control screw rod 19 and 4 Horizon ferropexy nuts 20;

Described hydraulic pump fixed base plate 23 is stepped plate class formation part, leveling board is evenly arranged the threaded hole that four structures are identical, by the bolt stationary hydraulic pump 18 that four structures are identical.Four angles place of the flat board of hydraulic pump fixed base plate 23 is furnished with four identical through holes of structure, for hydraulic pump fixed base plate 23 being fixed on ground black iron 6 through height regulable control screw rod 19.During installation, first the T-shaped part of height regulable control screw rod 19 is contained on ground black iron 6, land used black iron hold-down nut 20 is fixed on height regulable control screw rod 19 on ground black iron 6.Then, lower setting nut 21 is arranged on height regulable control screw rod 19, by the through hole of hydraulic pump fixed base plate 23, hydraulic pump fixed base plate 23 is sleeved on height regulable control screw rod 19 again, the bottom surface of hydraulic pump fixed base plate 23 is contacted with lower setting nut 21.By regulating height and the rotation of the height regulator solution press pump fixed base plate 23 of lower setting nut 21, thus realization high precision of the right alignment of the axial line of hydraulic pump 18 axial line and loading bar 9 in vertical plane regulates.During adjustment, first adjust the height of hydraulic pump 18 in vertical plane and rotation by hydraulic pump arrangement for adjusting height 16, then, pass through hydraulic pump double freedom regulating device 15 regulator solution press pump again in the position of surface level and rotation, finally by upper locking nut 22, hydraulic pump is locked, the high precision solving this testing table right alignment regulates problem again.

Described hydraulic pump double freedom regulating device 15 comprises two degrees of freedom and regulates support 25,2 two degrees of freedom adjusting screw(rod)s 24, adjusting handle 26 and 2 T-shaped bolts 27.

Described two degrees of freedom regulates support 25 to be a L-type structural member, is made up of floor and vertical plate, described floor has two regulate support 25 to be fixed on through hole on ground black iron 6 through making two degrees of freedom on T-shaped bolt 27, described vertical plate two ends are furnished with two threaded holes passed by two degrees of freedom adjusting screw(rod) 24, described two degrees of freedom adjusting screw(rod) 24 is multidiameter like members, path external thread section is followed successively by from left end to right-hand member, optical axis section, large footpath external thread section, the right-hand member of two degrees of freedom adjusting screw(rod) 24 has the threaded hole for installing adjusting handle 26 perpendicular to axis direction, light shaft section diameter in the middle of two degrees of freedom adjusting screw(rod) 24 is identical with the through-hole diameter on the vertical plate of hydraulic pump fixed base plate 23, and the axial dimension of the optical axis section in the middle of two degrees of freedom adjusting screw(rod) 24 is greater than the thickness of the vertical plate of hydraulic pump fixed base plate 23, optical axis section in the middle of two degrees of freedom adjusting screw(rod) 24 is sleeved in the through hole on the vertical plate of hydraulic pump fixed base plate 23, with the path external thread section of nut at two degrees of freedom adjusting screw(rod) 24, the large footpath external thread section screw thread of two degrees of freedom adjusting screw(rod) 24 regulates the internal thread on the vertical plate of support 25 to be threaded with two degrees of freedom.

Two, electro spindle support section

Consult Fig. 1 and Fig. 3, electro spindle described in the utility model (the utility model grinds the 170XDS30Y22 type electro spindle of production for Luoyang axle) support section comprises electro spindle bearing 11, electro spindle cushion block 28.

Described electro spindle bearing 11 is a T-shaped case body structural member.The upper plane of electro spindle bearing 11 is parallel with lower plane.The base plate both sides of electro spindle bearing 11 are furnished with U-type groove, for electro spindle bearing 11 being fixed on ground black iron 6 through T-shaped bolt.The upper surface of electro spindle bearing 11 is furnished with T-slot.Described electro spindle cushion block 28 is a rectangular structure part, and the upper surface of electro spindle cushion block 28 is parallel with lower surface, and electro spindle cushion block 28 upper surface contacts with electro spindle 10 bottom surface, and electro spindle cushion block 28 lower surface contacts with electro spindle bearing 11.During test, as long as change the electro spindle cushion block 28 i.e. height of adjustable electro spindle 10 of different size, to adapt to the fail-test requirement of different size electro spindle.

Three, radial force loading section

Consult Fig. 1, described radial force loading section comprises loading bar 9, radial force loading bearing 13, radial force charger 12, radial force loading bracing or strutting arrangement 14.

Consult Fig. 3, described radial force loads bearing 13 and is welded by base plate, left side web joint, right side web joint, intermediate plate, gusset that two block structures are identical, back up pad that two block structures are identical.Base plate is respectively arranged with three rectangular mouths near both sides, and radial force is loaded bearing 13 through rectangular mouth and is fixed on ground black iron 6 by T-shaped bolt.The back up pad that two block structures are identical arranges rectangular mouth, and the symcenter of rectangular mouth is perpendicular to base plate plane, and No. 1 hinge 36 can load bearing 13 back up pad rectangular mouth inner height direction in radial force and regulate.

Consult Fig. 3 and Fig. 5, described radial force loads bracing or strutting arrangement 14 and is made up of setting nut 39, No. 1 Rolling bearing 40, No. 1 bracing frame base plate 41, No. 1 bracing frame stiffening plate 42, No. 1 bracing frame back shaft 43 under No. 37,1, No. 1 bracing frame upper locking nut little axle of support 38, No. 1 bracing frame; Described No. 1 bracing frame base plate 41 is one block of square steel plate, and corner is respectively arranged with the identical threaded hole of structure; Described No. 1 bracing frame stiffening plate 42 is one block of square steel plate, and corner is respectively arranged with the identical through hole of structure; Described No. 1 bracing frame back shaft 43 is a shaft forgings, is followed successively by external thread section, maximum gauge section, secondary enlarged diameter section, external thread section from lower end to upper end.No. 1 bracing frame back shaft 43 lower end is external thread section, and this section is connected with four threaded holes on No. 1 bracing frame base plate 41.The diameter of the maximum gauge section of No. 1 bracing frame back shaft 43 is larger than the through hole on No. 1 bracing frame stiffening plate 42.The secondary enlarged diameter section of No. 1 bracing frame back shaft 43 is identical with the through-hole diameter on No. 1 bracing frame stiffening plate 42, and during installation, the through hole of No. 1 bracing frame stiffening plate 42 loads the secondary enlarged diameter section of No. 1 bracing frame back shaft 43.Described No. 1 supports little axle 38 is axial workpiece, and its two ends are respectively arranged with the identical through hole of a structure, and this through hole central axis supports the axis of little axle 38 in No. 1, and and No. 1 little axle 38 axes intersect of support.Plane is processed into respectively in the two ends of No. 1 through hole supported on little axle 38, and the upper plane of through hole, lower plane and No. 1 little axle 38 axis of support will be parallel to each other.Meanwhile, the distance of upper plane to No. 1 little axle 38 axis of support equals the distance that lower plane to No. 1 supports little axle 38 axis.During installation, setting nut 39 under No. 1 identical for four structures bracing frame is contained in the threaded upper ends place of No. 1 bracing frame back shaft 43, No. 1 identical for two structures Rolling bearing 40 is sleeved on No. 1 to be supported on little axle 38, No. 1 two through holes supported on little axle 38 are set in the thread segment of the upper end of No. 1 bracing frame back shaft 43, and contact with setting nut 39 under No. 1 bracing frame, adjust the height of No. 1 Rolling bearing 40 by setting nut 39 under No. 1 bracing frame, realize radial force charger 12 and highly regulate.Finally, then by the identical No. 1 bracing frame upper locking nut 37 of 4 structures little axle 38 is supported No. 1 and No. 1 bracing frame back shaft 43 is fixed.Radial force charger 12 is free to slide on No. 1 Rolling bearing 40.

Consult Fig. 3, described radial force charger 12 is made up of No. 1 load bar 29, No. 2 force snesor 30, No. 1 elastic device 31, No. 1 piston rod 32, radial loaded servo-cylinder 33, second electrohydraulic servo valve 34, No. 2 displacement transducers 35, No. 1 hinge 36.

The second described electrohydraulic servo valve 34 (the G761-3005B type servo-valve that the utility model is produced for MOOG company) is arranged on the upper surface of radial loaded servo-cylinder 33 by four bolts.Described radial loaded servo-cylinder 33 can select single piston or double-piston rod-type hydraulic jack, for double-piston rod-type servo-cylinder in embodiment of the present utility model, four threaded holes are had, for fixing the second electrohydraulic servo valve 34 in the middle of radial loaded servo-cylinder 33 upper surface.The right-hand member of described radial loaded servo-cylinder 33 is hinged on radial force by No. 1 hinge 36 and loads on bearing 13, and radial loaded servo-cylinder 33 horizontal positioned, loads bracing or strutting arrangement 14 by radial force and support.Radial loaded servo-cylinder 33 right-hand member freely up and down rotates by No. 1 hinge 36, semisphere is made in the front end of No. 1 load bar 29 simultaneously, the bearing holder (housing, cover) of the bearing loading unit 8 contacted with No. 1 load bar 29 makes hemispherical groove, add the accuracy of power application point in applying process, such radial force charger 12 just becomes two power bars, error can be made by automatic regulation moving, radial loaded power is acted on main-shaft axis always.No. 2 force snesor 30 described in the utility model are for 45interface1810 sensor.

Described No. 2 displacement transducers 35 (the utility model is for LVDT type displacement transducer) shell is fixed by screws on the cylinder body of radial loaded servo-cylinder 33, its inner core is connected with radial loaded servo-cylinder 33 piston rod right-hand member, when piston rod moves, the inner core of No. 2 displacement transducers 35 is also along with movement, realizes measurement and the feedback of displacement.

Four, axial force loading section

Consult Fig. 1, Fig. 4 and Fig. 5, described axial force loading section comprises loading bar 9, axial force loads bearing 1, axial force charger 2, axial force load bracing or strutting arrangement 17, axial force loads fork 5, oscillating arm mechanisms bracing frame 3, oscillating arm mechanisms revolute latch 4.

It is identical that described axial force loading bearing 1 structure and radial force load bearing 13.

Described axial force loads the structure of bracing or strutting arrangement 17 and radial force, and to load bracing or strutting arrangement 14 structure identical.Described axial force loads bracing or strutting arrangement 17 and is made up of setting nut 57 and No. 2 bracing frame base plates 58 under No. 52,2, No. 2 bracing frame upper locking nuts support little axle 53, No. 2 Rolling bearings 54, No. 2 bracing frame back shafts 55, No. 2 bracing frame stiffening plates 56, No. 2 bracing frames.Described No. 2 bracing frame base plates 58 are one block of square steel plate, and corner is respectively arranged with the identical threaded hole of four structures.Described No. 2 bracing frame stiffening plates 56 are one block of square steel plate, and corner is respectively arranged with the identical through hole of four structures.Described No. 2 bracing frame back shafts 55 are a shaft forgings, are followed successively by external thread section, maximum gauge section, secondary enlarged diameter section, external thread section from lower end to upper end.No. 2 bracing frame back shaft 55 lower ends are external thread section, and this section is connected with four threaded holes on No. 2 bracing frame base plates 58.The diameter of the maximum gauge section of No. 2 bracing frame back shafts 55 is larger than the through hole on No. 2 bracing frame stiffening plates 56.The secondary enlarged diameter section of No. 2 bracing frame back shafts 55 is identical with the through-hole diameter on No. 2 bracing frame stiffening plates 56.During installation, the through hole of No. 2 bracing frame stiffening plates 56 loads the secondary enlarged diameter section of No. 2 bracing frame back shafts 55.No. 2 support little axle 53 is axial workpiece, and its two ends are respectively arranged with the identical through hole of a structure, and this through hole central axis supports the axis of little axle 53 in No. 2, and and No. 2 little axle 53 axes intersect of support.Plane is processed into respectively in the two ends of No. 2 through holes supported on little axle 53, and the upper plane of through hole, lower plane and No. 2 little axle 53 axis of support will be parallel to each other.Meanwhile, the distance of upper plane to No. 2 little axle 53 axis of support equals the distance that lower plane to No. 2 supports little axle 53 axis.During installation, setting nut 57 under No. 2 identical for four structures bracing frames is contained in the threaded upper ends place of No. 2 bracing frame back shafts 55, No. 2 identical for two structures Rolling bearings 54 are sleeved on No. 2 to be supported on little axles 53, No. 2 two through holes supported on little axle 53 are set in the thread segment of the upper end of No. 2 bracing frame back shafts 55, and contact with setting nut 57 under No. 2 bracing frames, adjust the height of No. 2 Rolling bearings 54 by setting nut 57 under No. 2 bracing frames, realize axial force charger 2 and highly regulate.Finally, then by the identical No. 2 bracing frame upper locking nuts 52 of 4 structures little axles 53 are supported No. 2 and No. 2 bracing frame back shafts 55 are fixed.Axial force charger 2 is free to slide on No. 2 Rolling bearings 54.

Consult Fig. 1 and Fig. 4, described axial force charger 2 is made up of No. 2 load bars 44, No. 1 force snesor 45, No. 2 elastic devices 46, No. 2 piston rods 47, axially loading servo-cylinder 49, first electrohydraulic servo valve 48, No. 1 displacement transducer 50 and No. 2 hinges 51.

The first described electrohydraulic servo valve 48 (the G761-3005B type servo-valve that the utility model is produced for MOOG company) is arranged on the upper surface axially loading servo-cylinder 49 by four bolts.Described axis loads servo-cylinder 49 can select single piston or double-piston rod-type hydraulic jack, for double-piston rod-type servo-cylinder in embodiment of the present utility model, axially load in the middle of servo-cylinder 49 upper surface and have four threaded holes, for fixing the first electrohydraulic servo valve 48.The tail end that described axis loads servo-cylinder 49 has No. 2 hinges 51, is hinged on axial force and loads on bearing 1, axially load servo-cylinder 49 horizontal positioned, load bracing or strutting arrangement 17 support by axial force.Axially load servo-cylinder 49 tail end freely up and down to rotate by No. 2 hinges 51, semisphere is made in the front end of No. 2 load bars 44 simultaneously, the hemispherical groove that the axial force contacted with No. 2 load bars 44 loads the left surface of fork 5 coordinates, such axial force charger 2 just becomes two power bars, axial force charger 2 and axial force load fork 5 and form lever, two power bars can make error by automatic regulation moving, make axial loading force act on main axis always; Lever changes force direction, saves space, changes more economically.Axially load on servo-cylinder 49 and No. 1 displacement transducer 50 is housed, piston position can be detected in real time, carry out closed-loop control.Axially load servo-cylinder 49 leading portion and No. 2 elastic devices 46 are installed.No. 1 force snesor 45 (the utility model is for 45interface1810 sensor) can measure the size of actual loaded power, plays monitoring and protective effect.

Described oscillating arm mechanisms bracing frame 3 is stereo chamber type structures, and the lower shoe both sides of oscillating arm mechanisms bracing frame 3 are respectively arranged with two U-shaped grooves, and the T-shaped bolt identical by four structures is fixed with ground black iron 6.Oscillating arm mechanisms bracing frame 3 upper end center line position has through hole, and this through-bore axis is perpendicular to ground black iron.

It is shift fork class formation part that described axial force loads fork 5, and its left end is provided with through hole, for itself and oscillating arm mechanisms bracing frame 3 being coupled together through oscillating arm mechanisms revolute latch 4, and can rotate centered by oscillating arm mechanisms revolute latch 4.It is U-shaped structure that axial force loads fork 5 right-hand member, the end face of this U-shaped structure and the bearing holder (housing, cover) contact position of bearing loading unit 8 are provided with semi-cylindrical hill, the center of the line of two semi-cylindrical hills is just in time on the axial line of electro spindle, the axial force of loading is overlapped with the axial line being main shaft, realizes the loading of axial force.

Described No. 1 displacement transducer 50 (the utility model is for LVDT type displacement transducer) shell is fixed by screws on the cylinder body of axially loading servo-cylinder 49, its inner core is connected with the piston rod right-hand member axially loading servo-cylinder 49, when piston rod moves, the inner core of No. 1 displacement transducer 50 is also along with movement, realizes measurement and the feedback of displacement.

Five, bearing loading unit

Consult Fig. 1 and Fig. 6, described bearing loading unit 8 comprises left end cap 84, set nut 85, adjusting nut 86, No. 1 bolt 87, left 1 angular contact ball bearing 88, No. 1 inner ring sleeve 89,1 extra ring set 90, fixing exterior ring cap 91, No. 2 inner ring sleeves 92, spring 93, movable exterior ring cap 94, No. 3 inner ring sleeve 95,2 extra ring sets 96, No. 2 bolts 78, bearing bridge 82, right end cap 80, O-ring seal 81, right 1 angular contact ball bearing 75, right 2 angular contact ball bearings 66, set bolt 68, left 2 angular contact ball bearings 76.

Described left end cap 84 is in stepped ring forging shape, and inner hole wall has the seal groove for placing O-ring seal 81, circumferentially has six equally distributed through holes, for being fixed on bearing bridge 82 through No. 1 bolt 87.Described bearing bridge 82 is rectangle, and there is dead eye center, the both ends of the surface of dead eye respectively have equally distributed threaded hole, for fixing right end cap 80 and left end cap 84 through No. 1 bolt 87 and No. 2 bolts 78, and have a threaded hole at bottom surface place for the exterior ring cap 91 that is locked through set bolt 68.1 extra ring set 90 and No. 1 inner ring sleeve 89 is had to separate in the middle of a described left side 1 angular contact ball bearing 88 and left 2 angular contact ball bearings 76.Described fixing exterior ring cap 91 is annulars, its right side is uniformly distributed 3 blind holes for mounting spring 93 (the utility model is for KH08*45), excircle having a blind hole, for inserting set bolt 68 head, realizing the axial restraint of fixing exterior ring cap 91.Described movable exterior ring cap 94 is annular, and its left side has 3 equally distributed blind holes for mounting spring 93.The described right side 1 angular contact ball bearing 75 and right 2 angular contact ball bearings 66 use in pairs, and centre has No. 3 inner ring sleeves 95 and 2 extra ring set 96 to separate.The left side of No. 2 described inner ring sleeves 92 contacts with the inner ring right side of left 2 angular contact ball bearings 76, and the right side of No. 2 inner ring sleeves 92 contacts with the inner ring left side of right 2 angular contact ball bearings 66.The outer shroud left side of right 2 angular contact ball bearings 66 contacts with movable exterior ring cap 94 right side.The spring 93 that 3 described structures are identical is arranged in the blind hole of fixing exterior ring cap 91 and movable exterior ring cap 94.Described angular contact ball bearing 75 inner ring right side, the right side 1 contacts with the shaft shoulder of loading bar 9.Described right end cap 80 is in stepped ring forging shape, and inner hole wall has the seal groove for placing O-ring seal 81, right end cap 80 circumferentially have six equally distributed through holes, for being fixed on bearing bridge 82 through No. 2 bolts 78.During assembling, by regulating the pretension amount of the position adjustment spring 93 of adjusting nut 86 on loading bar 9, realize the pretension of bearing.Simultaneously, in test, when the temperature is changed, the automatic elongation of spring 93 and compression can realize the automatic adjustment of the axial displacement of right 1 angular contact ball bearing 75 and right 2 angular contact ball bearings 66, avoid the increase of the structural stress caused due to the change of temperature, extend the life-span of this mechanism and improve test accuracy.

Left 1 angular contact ball bearing 88 described in the utility model, right 1 angular contact ball bearing 75, right 2 angular contact ball bearings 66 and left 2 angular contact ball bearing 76 models are for 7208AC/P4o.

Six, hydraulic circuit part

Consult Fig. 1 and Fig. 7, described hydraulic circuit part comprises energy regenerating oil circuit, energy recycling oil circuit, auxiliary feed-oil oil circuit and Water-cooling circulating 79.

Described energy regenerating oil circuit comprises hydraulic pump 18, No. 2 oil filters 67, No. 2 pressure units 69, flow sensor 71, first electricity liquid ratio relief valve 70, No. 1 accumulator 72, tensimeter 74.

Described electro spindle 10 is connected with the pump shaft of hydraulic pump 18 (the utility model is for CBF-E10 hydraulic pump) by loading bar 9, spring coupling 7, drives hydraulic pump 18 to rotate.No. 2 described oil filters 67 are connected between the B mouth of hydraulic pump 18 and fuel tank oil-in, play the effect of filtering fluid.The B mouth of the first described electricity liquid ratio relief valve 70 (the utility model is for EBG-10-C model) is connected with the A mouth of hydraulic pump 18, the A mouth of the first electricity liquid ratio relief valve 70 is directly connected with tank drainback mouth, by regulating the output pressure of the first electricity liquid ratio relief valve 70 hydraulic control pump 18, realize the torque adjustment to electro spindle 10.Described No. 2 pressure units 69 (the utility model is for 1100W type pressure unit) are connected with the A mouth of hydraulic pump 18.Between the B mouth that described flow sensor 71 (the utility model is for FM110C type flow sensor) is connected to the second retaining valve 64 and the A mouth of hydraulic pump 18.By gathering No. 2 pressure units 69, the scrambler of electro spindle 10 inside and the signal of flow sensor 71, via controller process, feeding back and controlling the first electricity liquid ratio relief valve 70, realizing the torque adjustment of electro spindle 10.Described No. 1 accumulator 72 (the utility model is for NXQ1-6.3/10-L type accumulator) is connected with the A mouth of hydraulic pump 18, plays part accumulation of energy function and larger pressure surge adjustment.Described tensimeter 74 (the utility model is for YTN60 tensimeter) is connected with No. 1 accumulator 72, adds the system pressure of oil circuit for showing energy.

Described energy recycling oil circuit comprises No. 1 pressure unit 65, radial loaded servo-cylinder 33, first electrohydraulic servo valve 48, second electrohydraulic servo valve 34, axially loads servo-cylinder 49, No. 2 accumulators 83, surplus valve 59, the 3rd retaining valve 63, second retaining valve 64 and the first retaining valve 77.

The A mouth of the first described electrohydraulic servo valve 48 is connected with the A mouth axially loading servo-cylinder 49, the B mouth of the first electrohydraulic servo valve 48 is connected with the B mouth axially loading servo-cylinder 49, the P mouth of the first electrohydraulic servo valve 48 is connected with the A mouth of the A mouth of the second retaining valve 64 (the utility model is for S10A3.0 type retaining valve) and the 3rd retaining valve 63 (the utility model is for S10A3.0 type retaining valve), and the T mouth of the first electrohydraulic servo valve 48 is connected with the A mouth of the first retaining valve 77 and leads to tank drainback mouth.The described A mouth of the second electrohydraulic servo valve 34 is connected with the A mouth of radial loaded servo-cylinder 33, the B mouth of the second electrohydraulic servo valve 34 is connected with the B mouth of radial loaded servo-cylinder 33, the P mouth of the second electrohydraulic servo valve 34 is connected with the A mouth of the A mouth of the second retaining valve 64 and the 3rd retaining valve 63, and the T mouth of the second electrohydraulic servo valve 34 is connected with the A mouth of the first retaining valve 77 and leads to tank drainback mouth.Control axially to load the power of servo-cylinder 49 and the output of speed by the first electrohydraulic servo valve 48.The power of radial loaded servo-cylinder 33 and the output of speed is controlled by the second electrohydraulic servo valve 34.The B mouth of the first described retaining valve 77 (the utility model is for S10A3.0 type retaining valve) directly connects tank drainback mouth, plays the effect of back pressure.The effect of the first retaining valve 77 avoids the piston rod axially loading servo-cylinder 49 and radial loaded servo-cylinder 33 to be extended with impact phenomenon, ensures system run all right.Described No. 1 pressure unit 65 (the utility model is for 1100W type pressure unit) is connected with the A mouth of the 3rd retaining valve 63, for the oil liquid pressure of detected energy recycling oil circuit.By gathering the signal of No. 1 displacement transducer 50, No. 1 force snesor 45, No. 2 force snesor 30, No. 2 displacement transducers 35, via controller process, feed back and control the first electrohydraulic servo valve 48 and the second electrohydraulic servo valve 34, realizing axially loading servo-cylinder 49 and the power of radial loaded servo-cylinder 33 and the closed-loop control of speed.The A mouth of described surplus valve 59 (the utility model is for DB10-1-30B/100 surplus valve) is connected with the A mouth of the 3rd retaining valve 63, and the B mouth of surplus valve 59 directly connects the oil return opening of fuel tank, and surplus valve 59 plays the overload protective function of oil circuit.Described No. 2 accumulators 83 (the utility model is for NXQ1/10-L type accumulator) are connected with the A mouth of the 3rd retaining valve 63, play pressure stabilization function to energy recycling oil circuit.The 3rd described retaining valve 63 act as when hydraulic pump 18 is to system fuel feeding, ensure that hydraulic oil is not by auxiliary oil way oil return.The insufficient pressure act as when hydraulic pump 18 of the second described retaining valve 64, during by auxiliary hydraulic pump 62 to system fuel feeding, ensures hydraulic oil not by the oil return of energy regenerating oil circuit.

Described auxiliary feed-oil oil circuit part comprises No. 1 oil filter 61, auxiliary hydraulic pump 62, stand-by motor 60 and the second electricity liquid ratio relief valve 73.

The A mouth of described auxiliary hydraulic pump 62 (the utility model is for 10YCY14-1B) is connected with fuel tank oil-in by No. 1 oil filter 61 (the utility model is for WU-160*100-J), the B mouth of auxiliary hydraulic pump 62 is connected with the B mouth of the 3rd retaining valve 63, and the input shaft of auxiliary hydraulic pump 62 is connected by shaft coupling with the motor shaft of stand-by motor 60 (the utility model is for YUD160M-4 motor).The A mouth of the second described electricity liquid ratio relief valve 73 (the utility model is for EBG-10-C model) is connected with the B mouth of auxiliary hydraulic pump 62, the B mouth of the second electricity liquid ratio relief valve 73 is directly connected with tank drainback mouth, and the effect of the second electricity liquid ratio relief valve 73 is the pressure of the outlet A controlling auxiliary hydraulic pump 62.Described No. 1 oil filter 61 is connected between the A mouth of auxiliary hydraulic pump 62 and fuel tank oil-in, plays the effect of filtering fluid.Only have when the hydraulic oil that hydraulic pump 18 provides cannot meet axial loading servo-cylinder 49 and radial loaded servo-cylinder 33 works, described auxiliary hydraulic pump 62 just starts under the drive of stand-by motor 60 to energy recycling oil circuit fuel feeding.

Described Water-cooling circulating 79 is arranged on outside the front end oil circuit oil pipe of the A mouth of the first retaining valve 77, plays the effect of cooling oil path oil temperature.

Seven, automatic control section

Consult Fig. 1, Fig. 7 and Fig. 8, described automatic control section comprises industrial computer, electro spindle, moment of torsion loading and water-cooling controller, radial servo controller and axial servo controller etc.

Described electro spindle, moment of torsion are loaded and are connected with industrial computer by RS232C port with water-cooling controller, electro spindle, moment of torsion load and water-cooling controller outputs signal to frequency converter, control electro spindle 10 to rotate, drive hydraulic pump 18 to rotate by spring coupling 7, output hydraulic pressure oil.Flow sensor 71 and No. 2 pressure units 69 obtain hydraulic pump 18 exit flow and pressure signal, pass to electro spindle by signal conditioner, moment of torsion loads and water-cooling controller, the output pressure of the first electricity liquid ratio relief valve 70 regulator solution press pump 18 is driven again by signal amplifier, realize the closed-loop control of hydraulic pump 18 top hole pressure, thus realize the dynamic and static loading of the moment of torsion controlling electro spindle 10.Simultaneously, from hydraulic pump 18 hydraulic oil out except sub-fraction is through the first electricity liquid ratio relief valve 70 directly oil return box, other fluid direct oil return box but drive radial loaded servo-cylinder 33 by the second electrohydraulic servo valve 34, first electrohydraulic servo valve 48, axially load servo-cylinder 49, thus realize energy-conservation object.

Described radial servo controller is connected with industrial computer by RS232C port, and radial servo controller output signal, to the second electrohydraulic servo valve 34, controls the pressure of radial loaded servo-cylinder 33, speed and displacement by the second electrohydraulic servo valve 34.Simultaneously, No. 2 force snesor 30, No. 2 displacement transducers 35 gather load signal and are uploaded to radial servo controller by signal conditioner, radial servo controller output signal gives the second electrohydraulic servo valve 34, control radial loaded servo-cylinder 33 again, realize the pressure of radial loaded servo-cylinder 33, the closed-loop control of displacement.

Described axial servo controller is connected with industrial computer by RS232C port, and radial servo controller output signal gives the first electrohydraulic servo valve 48, controls by the first electrohydraulic servo valve 48 pressure, the displacement that axially load servo-cylinder 49.Simultaneously, No. 1 force snesor 45, No. 1 displacement transducer 50 gathers load signal and is uploaded to axial servo controller by signal conditioner, axial servo controller outputs signal to the first electrohydraulic servo valve 48, control again axially to load and watch oil cylinder 49, realize axially loading watching the pressure of oil cylinder 49, the closed-loop control of displacement.

Described Water-cooling circulating 79 to be loaded with electro spindle, moment of torsion through RS232C port by industrial computer and is connected with water-cooling controller, and sends signal to Water-cooling circulating 79, and water-cooling circulating system 79 is started working.

Described hydraulic pump 18 belongs to moment of torsion loading section and hydraulic circuit part.

There is the principle of work of the electro spindle reliability test bench of fluid pressure type energy regenerating:

Consult Fig. 1, in figure, give the schematic diagram that electro spindle 10 is loaded, first electro spindle 10 is installed by main shaft support part and be fixed to black iron 6 appropriate location, ground.Secondly, hydraulic pump 18 is installed, the axial line of the loading bar 9 in vertical plane and the axial line right alignment of hydraulic pump 18 is adjusted by hydraulic pump arrangement for adjusting height 16, after adjusting, the right alignment of the axial line of the loading bar 9 in surface level and the axial line of hydraulic pump 18 is adjusted again by hydraulic pump double freedom regulating device 15, so repeatedly regulate, until the axial line right alignment of the axial line of loading bar 9 and hydraulic pump 18 reaches requirement, lock hydraulic pump 18 by hydraulic pump arrangement for adjusting height 16 afterwards.Then, assemble and adjust axial loading device 2, supporting seat 1, oscillating arm mechanisms bracing frame 3, oscillating arm mechanisms revolute latch 4 load fork 5 with axial force, make the application point of applying axial force by the axial line of electro spindle 10, do not produce upsetting moment.Assemble again and regulate radial force charger 12, radial force to load bearing 13, making the active line of loading force by the axis of electro spindle 10.Before test, the loading spectrum according to actual cut process arranges the correlation test parameters such as dynamic and static cutting force size and torque at operation interface.And open cooling system, start test.In test, the various sensors in testing table gather corresponding signals, and deliver to processor in time and carry out signal transacting, and feed back to corresponding executive component in time, form closed-loop control, and record corresponding test figure.After test, shutoff operation program is also cut off the electricity supply.

Claims

1. one kind has the electro spindle reliability test bench of fluid pressure type energy regenerating, this testing table comprises electro spindle (10), electro spindle support section, loading bar (9), bearing loading unit (8), radial force loading section, axial force loading section, automatic control section, it is characterized in that, this testing table also comprises moment of torsion loading section and the hydraulic circuit part be connected with moment of torsion loading section by pipeline, wherein said moment of torsion loading section comprises torque loading device and supports the hydraulic pump supporting and regulating device of torque loading device, described electro spindle (10), loading bar (9), bearing loading unit (8), the axial line of the hydraulic pump (18) of moment of torsion loading section is coaxial, the axis of No. 1 load bar (29) of radial force loading section is mutually vertical with the axial line of bearing loading unit (8), the axis of No. 2 load bars (44) and the axial line of bearing loading unit (8) of axial loading section are parallel to each other, and described electro spindle (10) is connected with hydraulic pump (18) axle of moment of torsion loading section by loading bar (9), spring coupling (7).

2. a kind of electro spindle reliability test bench with fluid pressure type energy regenerating according to claim 1, is characterized in that, described torque loading device comprises spring coupling (7), hydraulic pump (18); Through hole is arranged at described hydraulic pump (18) bottom, be bolted on hydraulic pump fixed base plate (23), hydraulic pump (18) axis of rotation is parallel with the upper workplace on ground black iron (6), one end of spring coupling (7) is connected by flat key with the input shaft of hydraulic pump (18), the other end of spring coupling (7) is connected by flat key with one end of loading bar (9), the axis of rotation conllinear of the axis of rotation of described hydraulic pump (18), the axis of rotation of spring coupling (7) and loading bar (9).

3. a kind of electro spindle reliability test bench with fluid pressure type energy regenerating according to claim 1, it is characterized in that, described hydraulic pump supporting and regulating device comprises hydraulic pump arrangement for adjusting height (16) and hydraulic pump double freedom regulating device (15);

4. a kind of electro spindle reliability test bench with fluid pressure type energy regenerating according to claim 1, it is characterized in that, described bearing loading unit (8) comprises left end cap (84), set nut (85), adjusting nut (86), No. 1 bolt (87), left 1 angular contact ball bearing (88), No. 1 inner ring sleeve (89), 1 extra ring set (90), fixing exterior ring cap (91), No. 2 inner ring sleeves (92), spring (93), movable exterior ring cap (94), No. 3 inner ring sleeves (95), 2 extra ring sets (96), No. 2 bolts (78), bearing bridge (82), right end cap (80), O-ring seal (81), right 1 angular contact ball bearing (75), right 2 angular contact ball bearings (66), set bolt (68), left 2 angular contact ball bearings (76),

Described left end cap (84) is in stepped ring forging shape, inner hole wall has the seal groove for placing O-ring seal, circumferentially having six is uniformly distributed for making it to be fixed on the through hole on bearing bridge (82) through No. 1 bolt (87), described bearing bridge (82) is rectangle, and there is dead eye center, the both ends of the surface of dead eye respectively have equally distributed threaded hole, for fixing right end cap (80) and left end cap (84) through bolt, and have a threaded hole at bottom surface place for the exterior ring cap (91) that is locked through set bolt (68), described fixing exterior ring cap (91) is annular, its right side is uniformly distributed 3 blind holes for mounting spring (93), excircle has one will be fixed the axial restraint of exterior ring cap (91) blind hole for inserting set bolt (68) head, 1 extra ring set (90) and No. 1 inner ring sleeve (89) is had to separate in the middle of a described left side 1 angular contact ball bearing (88) and left 2 angular contact ball bearings (76), described movable exterior ring cap (94) is annular, and its left side has 3 blind holes be uniformly distributed for mounting spring (93), the described right side 1 angular contact ball bearing (75) and right 2 angular contact ball bearings (66) use in pairs, and centre is provided with No. 3 inner ring sleeves (95) and 2 extra ring sets (96), the left side of No. 2 described inner ring sleeves (92) contacts with the inner ring right side of left 2 angular contact ball bearings (76), and the right side of No. 2 inner ring sleeves (92) contacts with the inner ring left side of right 2 angular contact ball bearings (66), the outer shroud left side of right 2 angular contact ball bearings (66) contacts with movable exterior ring cap (94) right side, and described spring (93) is arranged in the blind hole of fixing exterior ring cap (91) and movable exterior ring cap (94), described angular contact ball bearing (75) inner ring right side, the right side 1 contacts with the shaft shoulder of loading bar (9), described right end cap (80) is in stepped ring forging shape, inner hole wall has the seal groove for placing O-ring seal (81), circumferentially has six through holes be uniformly distributed for No. 2 bolts (78) being fixed on bearing bridge (82), by the pretension amount regulating the position of adjusting nut (86) on loading bar (9) to realize adjustment spring (93), thus regulate the axial displacement of right 1 angular contact ball bearing (75) and right 2 angular contact ball bearings (66).

5. a kind of electro spindle reliability test bench with fluid pressure type energy regenerating according to claim 1, it is characterized in that, described hydraulic circuit part comprises energy regenerating oil circuit, energy recycling oil circuit, auxiliary feed-oil oil circuit and Water-cooling circulating (79);

6. a kind of electro spindle reliability test bench with fluid pressure type energy regenerating according to claim 5, it is characterized in that, described automatic control section mainly comprises industrial computer, electro spindle, moment of torsion loading and water-cooling controller, radial servo controller and axial servo controller;

7. a kind of electro spindle reliability test bench with fluid pressure type energy regenerating according to claim 1, is characterized in that, described hydraulic pump (18) belongs to moment of torsion loading section and hydraulic circuit part.

8. a kind of electro spindle reliability test bench with fluid pressure type energy regenerating according to claim 1, it is characterized in that, described electro spindle (10) is arranged on electro spindle support section, and wherein said electro spindle support section comprises electro spindle bearing (11), electro spindle cushion block (28);

9. a kind of electro spindle reliability test bench with fluid pressure type energy regenerating according to claim 1, it is characterized in that, described radial force loading section comprises radial force and loads bearing (13), radial force charger (12) and radial force loading bracing or strutting arrangement (14);

10. a kind of electro spindle reliability test bench with fluid pressure type energy regenerating according to claim 1, it is characterized in that, described axial force loading section comprises axial force and loads bearing (1), axial force charger (2), axial force loading bracing or strutting arrangement (17), axial force loading fork (5), oscillating arm mechanisms bracing frame (3) and oscillating arm mechanisms revolute latch (4);

Described axial force loads fork (5) one end and contacts with bearing loading unit (8), and itself and oscillating arm mechanisms bracing frame (3) are coupled together by oscillating arm mechanisms revolute latch (4) by the other end; Described axial force charger (2) is placed on axial force and loads bracing or strutting arrangement (17) top; The hemispherical groove that axis and the axial force of No. 2 load bars (44) of described axial force charger (2) load the left surface of fork (5) coordinates; Described axial force charger (2) other end is hinged on axial force by No. 2 hinges (51) and loads on bearing (1).