CN202693350U - Dynamometer and hydraulic pressure mixed loading power servo tool rest reliability test bed - Google Patents
Dynamometer and hydraulic pressure mixed loading power servo tool rest reliability test bed Download PDFInfo
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- CN202693350U CN202693350U CN 201220302368 CN201220302368U CN202693350U CN 202693350 U CN202693350 U CN 202693350U CN 201220302368 CN201220302368 CN 201220302368 CN 201220302368 U CN201220302368 U CN 201220302368U CN 202693350 U CN202693350 U CN 202693350U
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Abstract
The utility model discloses a dynamometer and hydraulic pressure mixed loading power servo tool rest reliability test bed which comprises a power servo tool rest supporting part, a cutting force loading part and a power head loading part. According to the power servo tool rest supporting part, a power servo tool rest base plate (3) is fixedly connected with a top plate of a power servo tool rest base (2); and the power servo tool rest base (2) is fixedly arranged at the left lower part of a horizontal iron. The cutting force loading part comprises a simulated tool bar (5), a cutting force loading supporting device and a cutting force loading device; the cutting force loading supporting device is fixedly arranged on the horizontal iron at the right upper part of the power servo tool rest base (2); the cutting force loading device is fixedly arranged on the cutting force loading supporting device; and the simulated tool bar (5) is arranged on a cutter head. The power head loading part arranged at the right side of the power servo tool rest supporting part comprises a bearing loading device (22), a bearing loading device base (23), a No.2 loading rod (21) and a dynamometer (25).
Description
Technical field
The utility model relates to a kind of test unit that is applied to numerically-controlled machine power servo saddle reliability field, or rather, the utility model relates to and a kind ofly can realize that dynamic and static cutting force and the cutting moment of torque load and carry out the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid of fail-test to numerically-controlled machine power servo saddle.
Background technology
Along with the fast development of equipment manufacture, China had become the big country of numerically-controlled machine production and application in recent years, the numerically-controlled machine of present domestic research and development precision, speed, maximization and multi-shaft interlocked aspect obtained obvious progress.But along with increasing of function, potential faults increases, and advanced function and performance index can not be kept, and integrity problem is serious, has become enterprise, user and the focus of selling market concern and the bottleneck of numerically-controlled machine industry development.Therefore the one of the main reasons that domestic numerical control lathe reliability level is on the low side is that the reliability level of domestic numerical control lathe key feature is lower, researchs and develops numerically-controlled machine key feature reliability test and experimental technique has important practical significance.The power servo saddle is as one of key feature of high-end numerically controlled lathe, and the reliability level of himself has important impact to the reliability level of complete machine.
The numerically-controlled machine key feature fail-test research of China is started late, and the simple reliability test of some functions is only arranged at present.For example, some testing table can carry out the dry run test, lay particular stress on test the power servo saddle, perhaps adopts hydraulic cylinder or cylinder that the simulation cutter is simulated the load test of static cutting force, and the operating mode of test simulation and real working condition have very large gap.
Summary of the invention
Technical problem to be solved in the utility model is to have overcome current driving force servo saddle reliability test can not simulate the problem of dynamic and static cutting force and cutting moment of torque loading, and a kind of power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid is provided.
For solving the problems of the technologies described above, the utility model is to adopt following technical scheme to realize: the described power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid comprises power servo saddle support section, cutting force loading section and unit head loading section.
Described power servo saddle support section comprises power servo saddle base and power servo saddle backing plate, power servo saddle backing plate is fixedly connected with by the top board of bolt with power servo saddle base, and power servo saddle base is by the T-shaped lower left that is bolted to the ground black iron.
Described cutting force loading section comprises that Simulated Arbor, cutting force load bracing or strutting arrangement and cutting force charger.Cutting force loads the cutting force charger base of bracing or strutting arrangement by wherein and is fixed on top-right ground of the power servo saddle base black iron, and the hydraulic cylinder bracing frame of cutting force charger by wherein is bolted on No. 2 slide plates in the cutting force loading bracing or strutting arrangement.One end of Simulated Arbor is installed on the cutterhead of tested power servo saddle (4).
Described unit head loading section comprises bearing loading device, bearing loading device base, No. 2 load bars, spring coupling, dynamometer machine and XY worktable.
Dynamometer machine is installed on the XY worktable by bolt, XY worktable is installed on the ground black iron on power servo saddle base right side by T-shaped bolt, vertical plane of symmetry of the axis of rotation of dynamometer machine and ground black iron is parallel, and parallel with the upper workplace of ground black iron, the output terminal flange of dynamometer machine is connected with the right-hand member flange bolt of spring coupling, the left end of spring coupling is connected with the right-hand member key of No. 2 load bars, and the left end of No. 2 load bars is installed in the right-hand member of the dynamic tool apron on the tested power servo saddle by spring chuck; Bearing loading device is sleeved on No. 2 load bars as being rotationally connected, and the bottom of bearing loading device and the top of bearing loading device base are equipped to be connected for contact; The axis of rotation conllinear of the dynamic tool apron on the axis of rotation of the axis of rotation of dynamometer machine output shaft, the axis of rotation of spring coupling, No. 2 loading bars and the tested power servo saddle.
Cutting force described in the technical scheme loads bracing or strutting arrangement and is comprised of cutting force charger base, directions X guide rail, 2 identical Y-direction guide rail, No. 1 slide plate, left front support, right front support, rotating shaft, ladder bearing pin and No. 2 slide plates of structure.2 identical Y-direction guide rails of structure adopt bolt to be installed in parallel to each other the both sides of upper workplace in the cutting force charger base, the directions X guide rail adopts and to be bolted on the identical Y-direction guide rail of two structures, vertical plane of symmetry of the Y-direction guide rail that vertical plane of symmetry of directions X guide rail is identical with 2 structures is vertical, No. 1 slide plate is fixed on the directions X guide rail, left front support and right front support are installed in respectively the two ends of No. 1 slide plate, rotating shaft is installed between left front support and the right front support and adopts bolt to fix, and No. 2 slide plate is fixedly connected with rotating shaft with bolt by the ladder bearing pin; Cutting force charger described in the technical scheme comprises load bar, elastic device, pressure transducer, hydraulic cylinder, oscillating bearing, hydraulic cylinder bracing frame, linear bearing and No. 1 axle (36) No. 1.Described hydraulic cylinder is selected single piston and double-piston rod-type hydraulic jack, and the upper surface of hydraulic cylinder is fixedly connected with a upper end cover by four double-screw bolts, and hydraulic cylinder is hinged on the lower surface of top board in the hydraulic cylinder bracing frame by upper end cover and oscillating bearing.Fix axle between the upper surface of upper end cover and hydraulic cylinder No. 1, the axis of the upper piston rod in the axis of No. 1 axle and the hydraulic cylinder is parallel, be set with the linear bearing that can slide at No. 1 axle on No. 1 axle, one end of linear bearing and the end of upper piston rod are fixedly connected with, and the inner core of the displacement transducer in the other end of linear bearing and the control section of being connected connects.The end of the lower piston rod of hydraulic cylinder is fixedly connected with an end of pressure transducer by screw thread, the other end of pressure transducer is connected by a studs with tapped through hole on the right side connecting plate of elastic device, and the tapped through hole on an end of No. 1 load bar and the left side connecting plate of elastic device is threaded; Elastic device described in the technical scheme is comprised of with 2 identical nuts of specification left side web joint, right side web joint, 2 identical sleeve, 2 identical bolts of specification of structure, and wherein: the left side web joint is identical with the right side connecting board structure;
Described left side web joint and right side web joint respectively are a rectangular flat plate, its center is provided with tapped through hole, respectively there is a through hole both sides of tapped through hole, the external diameter of the sleeve that 2 structures are identical is greater than the diameter of the through hole of both sides on left side web joint and the right side web joint, 2 identical bolts of specification insert in the through hole of both sides on left side web joint and the right side web joint, the identical sleeve set of 2 structures on the left side web joint bolt identical with 2 specifications between the web joint of right side, again by the identical nut of 2 structures with the left side web joint, the sleeve that the right side web joint is identical with 2 structures is fixed together; Bearing loading device described in the technical scheme comprises left bearing lid, No. 1 bearing, housing, spacer ring, No. 2 bearings (33), end cap and right bearing lid.Left bearing lid is bolted on the left side of housing, and No. 1 bearing and No. 2 bearings are installed in the central through hole of housing, and spacer ring is installed between No. 1 bearing and No. 2 bearings, and the three is followed successively by and contacts connection.No. 2 bearings are connected with end cap contact on being fixed on the housing right side, and right end cap is bolted on the end cap; Bearing loading device base described in the technical scheme is that foursquare rectangular parallelepiped column forms by a foursquare mounting base and an xsect.Between the bottom face of foursquare mounting base and rectangular parallelepiped column for being welded to connect, the center of mounting base is on the axis of symmetry of rectangular parallelepiped column, the two ends of foursquare mounting base arrange respectively a through hole that is used for erection bolt, and the upper surface of rectangular parallelepiped column is processed into the U-shaped groove equipped with the lower end of bearing loading device.
Compared with prior art the beneficial effects of the utility model are:
1. the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid described in the utility model adopts hydraulic cylinder that tested Simulated Arbor or the unit head (load bar) of power servo saddle are simulated dynamic and static cutting force loading, utilize simultaneously dynamometer machine that tested unit head (load bar) is carried out moment of torsion and load, simulate power servo saddle suffered cutting force and cutting moment of torque in true working angles.By tested power servo saddle being carried out the fail-test of Reality simulation operating mode, expose and excite product bug, for reliability growth and the assessment of product provides practical basic data.
2. cutting force and the cutting moment of torque of the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid described in the utility model can realize dynamic and static loading.Cutting force amplitude and loading frequency, the unit head cutting moment of torque are according to dynamically adjustable under the different operating modes.
Cutting force loading section in the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid described in the utility model be equipped with draw, pressure transducer and displacement transducer, the size of the simulation cutting power of loading be can detect in real time, Real Time Monitoring and closed-loop control and feedback realized; Moment of torsion is equipped with torque sensor and speed probe when loading, and also can realize Real Time Monitoring and closed-loop control to the cutting moment of torque that loads, and makes charger have higher loading accuracy.
4. the loading frequency by the cutting force loading section in the power servo saddle reliability test bench of dynamometer machine and hydraulic hybrid loading described in the utility model is decided on servo-valve, can reach about 100Hz at present.The utility model adopts dynamometer machine to carry out the unit head cutting moment of torque and loads, and the highest absorbed power of dynamometer machine is 10KW, and maximum speed is 13000rpm, and the highest loading moment of torsion is 50Nm.High-power, high-revolving power servo saddle unit head is carried out load test have more practical significance.
5. the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid described in the utility model is for power servo saddle or the servo saddle of different model, only need to change the transition pieces such as power servo saddle backing plate, Simulated Arbor and loading bar and just can carry out the reliability load test to it, embodied dirigibility and the versatility of this testing table.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is that the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid described in the utility model is to the axonometric projection graph of unit head (loading bar) stress state;
Fig. 2 is that the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid described in the utility model is to the axonometric projection graph of Simulated Arbor stress state;
Fig. 3 is the breakdown axonometric projection graph of the support section of the cutting force charger in the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid described in the utility model;
Fig. 4 is the breakdown axonometric projection graph by the bearing loading device in the power servo saddle reliability test bench of dynamometer machine and hydraulic hybrid loading described in the utility model;
Fig. 5 is the front view that the bearing loading device (being used for that unit head is carried out simulation cutting power loads) installed on No. 2 load bars in the power servo saddle reliability test bench that is connected with hydraulic hybrid by dynamometer machine described in the utility model is connected with the bearing loading device base;
Fig. 6 is the structural principle block diagram by automatic control section in the power servo saddle reliability test bench of dynamometer machine and hydraulic hybrid loading described in the utility model;
Among the figure: 1. black iron, 2. power servo saddle base, 3. power servo saddle backing plate, 4. tested power servo saddle, 5. Simulated Arbor, No. 6.1 load bars, 7. elastic device, 8. pressure transducer, 9. hydraulic cylinder, 10. oscillating bearing, 11. hydraulic cylinder bracing frames, No. 12.2 slide plates, 13. rotating shaft, 14. right front supports, No. 15.1 slide plates, 16.X traversing guide, 17.Y traversing guide, 18. cutting force charger bases, 19. the lathe tool tool rest, 20. unit head tool rests, No. 21.2 load bars, 22. bearing loading device, 23. bearing loading device bases, 24. spring couplings, 25. dynamometer machine, 26.XY worktable, 27. ladder bearing pins, 28. left front support, 29. left bearings lid, No. 30.1 bearings, 31. housing, 32. spacer rings, No. 33.2 bearings, 34. end cap, 35. right bearings lid, No. 36.1 axles.
Embodiment
Below in conjunction with accompanying drawing the utility model is explained in detail:
Consult Fig. 1, the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid described in the utility model is comprised of power servo saddle support section, cutting force loading section, unit head loading section and automatic control section.
One. power servo saddle support section
Described power servo saddle support section comprises power servo saddle base 2 and power servo saddle backing plate 3.
Described power servo saddle base 2 is box typed structure spare, be welded by six blocks of plain plates, top end face and bottom face are parallel to each other, the Si Jiaochu of top board is provided with for the tapped through hole that power servo saddle backing plate 3 is installed, the Si Jiaochu of base plate is provided with the U-shaped opening, is used for passing T-shaped bolt power servo saddle base 2 is fixed on ground black iron 1.Described power servo saddle backing plate 3 is plate structure spare, the Si Jiaochu of power servo saddle backing plate 3 is provided with the through hole for erection bolt, the position is evenly equipped be used to the tapped through hole that tested power servo saddle 4 is installed between the four-way hole, the thickness of power servo saddle backing plate 3 can be according to high different change the in the center of tested power servo saddle 4, so that the axial line of the axial line of the dynamic tool apron 20 on the tested power servo saddle 4 and dynamometer machine 25 output shafts and the axial line conllinear of spring coupling 24.
Power servo saddle backing plate 3 is connected by the top board of bolt with power servo saddle base 2, and power servo saddle base 2 can move along directions X, and by the T-shaped lower left that is bolted to ground black iron 1.
Two. the cutting force loading section
Described cutting force loading section comprises that Simulated Arbor 5, cutting force load bracing or strutting arrangement and cutting force charger.
1. cutting force loads bracing or strutting arrangement
Consult Fig. 1 to Fig. 3, described cutting force loads bracing or strutting arrangement and is comprised of cutting force charger base 18, directions X guide rail 16,2 identical Y-direction guide rail 17, No. 1 slide plate 15, left front support 28, right front support 14, rotating shaft 13, ladder bearing pin 27 and No. 2 slide plates 12 of structure.
Cutting force charger base 18 is the case structure spare of cuboid, formed by six plain plate welding or mechanical connection, the base plate of cutting force charger base 18 (with vertically vertical) both sides are provided with the opening of four U-shapeds, T-shaped bolt passes U-shaped mouth cutting force charger base 18 is fixed on the ground black iron 1, namely is fixed on the top-right ground black iron 1 of power servo saddle base 2.The upper workplace of cutting force charger base 18 (with vertically vertical) both sides are evenly equipped with for the tapped through hole that Y-direction guide rail 17 is installed.
Described Y-direction guide rail 17 is strip (xsect is rectangle) plate structure spares, the centre position longitudinally to upper workplace along Y-direction guide rail 17 is processed with T-shaped groove, T-shaped groove both sides respectively are provided with two ladder holes, be used for passing hexagon socket head cap screw Y-direction guide rail 17 is fixed on cutting force charger base 18.
Described directions X guide rail 16 is elongated plates class formation spares that upper workplace is evenly equipped with two T-shaped grooves, article two, the outside of T-shaped groove is respectively arranged with two ladder holes, is used for passing hexagon socket head cap screw directions X guide rail 16 is fixed on two Y-direction guide rails 17 that structure is identical.
Described right front support 14 is formed by right front support base plate, right front support the back up pad welding of right-angle triangle gusset or the mechanical connection identical with two block structures, the right-hand member of the bottom surface of right front support back up pad and right front support base plate is vertical being fixedly connected with mutually, and two right-angle side end faces in the identical right-angle triangle gusset of two block structures and the left side of right front support back up pad and the upper surface of right front support base plate are fixedly connected with to strengthen the intensity of right front support 14.Be provided with four on the right front support base plate and be used for the bottom hole fixing with No. 1 slide plate 15.Right front support back up pad is along the Y-direction angle that turns forward, the upper end of right front support back up pad be provided with rotating shaft 13 in the equipped right shoulder hole of right multidiameter, large diameter hole in the right shoulder hole is in the left side, small diameter bore is on the right side, be evenly equipped with three sections arc grooves around the shoulder hole, three bolts pass arc groove, and right front support back up pad is relative fixing with rotating shaft 13 right-hand members.Left front support 28 is basic identical with the structure of right front support 14.Left front support 28 is formed by gusset welding or the mechanical connection of left front support base plate, right-angle triangle that left front bracket leg fagging is identical with two block structures, the left end of the bottom surface of left front bracket leg fagging and left front support base plate is vertical being fixedly connected with mutually, and two right-angle side end faces in the gusset of the right-angle triangle that two block structures are identical and the right side of left front bracket leg fagging and the upper surface of left front support base plate are fixedly connected with to strengthen the intensity of left front support 28.Left front bracket leg fagging is along the Y-direction angle that turns forward, the upper end of left front bracket leg fagging be provided with rotating shaft 13 in the equipped left shoulder hole of left multidiameter, large diameter hole in the left shoulder hole is on the right side, small diameter bore is in the left side, be evenly equipped with three sections arc grooves around the shoulder hole, three bolts pass arc groove, and right front support back up pad is relative fixing with rotating shaft 13 left ends.Left front support base plate in left front support 28 and the right front support 14 is identical with the structure of right front support base plate, left shoulder hole and right shoulder hole and left front bracket leg fagging and right front support back up pad, and left front bracket leg fagging is also identical along the angle that Y-direction turns forward with right front support back up pad.Left shoulder hole center line equates with the distance of right shoulder hole center line apart from right front support base plate bottom surface apart from the distance of left front support base plate bottom surface.Left shoulder hole center line and right shoulder hole centerline collineation.
Described rotating shaft 13 is welded successively by left multidiameter, rectangular slab and right multidiameter or mechanical connection is integrated, the centerline collineation of left multidiameter and right multidiameter, the upper plane of the rectangular slab plane of the contact of No. 2 slide plate 12 bottom surfaces (namely with) is parallel with the center line of right multidiameter with left multidiameter, and rectangular slab is vertical with the left side with the right side of right multidiameter with left multidiameter in other words.The rectangular slab center is provided with a central through hole, be evenly distributed with three sections isostructural annular through groove for erection bolt of concentric around the central through hole, left multidiameter is identical with the structure of right multidiameter, be two step circular shafts with two diameter segment, be evenly equipped with outside 6 threaded holes on the side stage rank.Rectangular slab is positioned at left multidiameter and right multidiameter center line both sides.
Described No. 2 slide plates 12 are rectangular slab class formation spares, be evenly equipped with from top to bottom 2 T-slots on front (just) face of No. 2 slide plates 12, the lower end of rear (back of the body) face of No. 2 slide plates 12 arranges one and equipped ladder blind (leading to) hole, ladder bearing pin 27 upper ends, and the axis of rotation in ladder blind (leading to) hole and front (just) face of No. 2 slide plates 12 are perpendicular with rear (back of the body) face.Shoulder hole on the rectangular slab in the rotating shaft 13 on central through hole and No. 2 slide plates 12 cooperates with the upper end with the lower end of ladder bearing pin 27 respectively, even 6 tapped through holes that distribute around No. 2 slide plate 12 shoulder holes interfix No. 2 slide plates 12 by tapped through hole and bolt with rotating shaft 13.Described ladder bearing pin 27 is for having the axle of a shaft shoulder, and the shaft shoulder is near the upper end (right-hand member) of axle.Described No. 1 slide plate 15 is rectangular slab class formation spares, its two ends are respectively arranged be used to being fixedly connected with four tapped through holes of left front support 28 with right front support 14, and the centre position of No. 1 slide plate 15 is provided with for four through holes that oneself are fixed on the directions X guide rail 16.
Cutting force charger base 18 namely is fixed on the power servo saddle base 2 top-right ground black irons 1 by T-shaped being bolted on the ground black iron 1,2 identical Y-direction guide rails 17 of structure are fixed on the two ends, the left and right sides of cutting force charger base 18 upper flat plates in parallel to each other by bolt, directions X guide rail 16 is bolted on the identical Y-direction guide rail 17 of two structures by T-shaped, directions X guide rail 16 is perpendicular to 2 Y-direction guide rails 17 that the structure that is parallel to each other is identical, No. 1 slide plate 15 is bolted on the directions X guide rail 16 by T-shaped, left front support 28 and right front support 14 are bolted on the two ends of No. 1 slide plate 15, left front bracket leg fagging in the left multidiameter of rotating shaft 13 and right multidiameter and left front support 28 and the right front support 14 and the left shoulder hole on the right front support back up pad and right shoulder hole are equipped and be bolted fixing, the lower end of ladder bearing pin 27 is installed on the central through hole on the rectangular slab in the rotating shaft 13, the ladder blind hole of (back of the body) face is equipped behind the upper end of ladder bearing pin 27 (right-hand member) and the shaft shoulder and No. 2 slide plates, between rotating shaft 13 and No. 2 slide plates by the center pit on the rectangular slab in bolt and the rotating shaft 13 on every side uniform tapped through hole fix.
2. cutting force charger
Consult Fig. 1 and Fig. 2, described cutting force charger comprises load bar 6, elastic device 7, pressure transducer 8, hydraulic cylinder 9, oscillating bearing 10, hydraulic cylinder bracing frame 11, linear bearing and No. 1 axle 36 No. 1.
Described hydraulic cylinder 9 is selected single piston and double-piston rod-type hydraulic jack, double piston-rod stretches out respectively from the top and bottom of hydraulic cylinder 9, the upper surface of hydraulic cylinder 9 (stretching out the end face of upper piston rod) is fixedly connected with a upper end cover by four double-screw bolts, the threaded end bar of oscillating bearing is threaded with the upper end cover screwed hole of centre, the other end of oscillating bearing is hinged on the lower surface of top board in the hydraulic cylinder bracing frame 11, and vertical axis of symmetry of hydraulic cylinder 9 is in vertical plane of symmetry of hydraulic cylinder bracing frame 11.The axis of the upper piston rod in the axis of fixing 36, No. 1 axles 36 of No. 1 axle between the upper surface of upper end cover and hydraulic cylinder 9 (stretching out the end face of upper piston rod) and the hydraulic cylinder 9 is parallel.Being set with on No. 1 axle 36 can be at the linear bearing of No. 1 axle 36 slips, and an end of linear bearing and the end of upper piston rod are fixedly connected with, and namely linear bearing can slide with moving up and down at No. 1 axle 36 of piston rod.The inner core of the displacement transducer in the other end of linear bearing and the control section of being connected connects, and the inner core of displacement transducer is also along with movement when piston rod moves, and displacement transducer just can record the displacement of piston rod.
Described elastic device 7 is comprised of with 2 identical nuts of specification left side web joint, right side web joint, 2 identical sleeve, 2 identical bolts of specification of structure, and wherein: the left side web joint is identical with the right side connecting board structure.Described left side web joint and right side web joint respectively are a rectangular flat plate, its center position is provided with tapped through hole, respectively there is a through hole both sides of tapped through hole, and the external diameter of the sleeve that 2 structures are identical is greater than the diameter of two side through hole on left side web joint and the right side web joint.2 identical bolts of specification insert in the through hole of left side web joint and web joint both sides, right side, the identical sleeve set of 2 structures is fixed together by the identical nut of 2 structures sleeve that left side web joint, right side web joint is identical with 2 structures on two bolts between left side web joint and the right side web joint more at last.Threaded hole on the web joint in left side is threaded with the right-hand member of No. 1 load bar 6, and the threaded hole on the web joint on right side is threaded with the left end of studs.Elastic device can the absorption portion displacement but can be transmitted power.(natural frequency of elastic device should greater than excited frequency more than two times)
Hydraulic cylinder bracing frame 11 is bolted on No. 2 slide plates 12, and the hydraulic cylinder upper surface is fixed by four bolts and upper end cover, and upper end cover, oscillating bearing and joint bearing block are fixed on the lower surface of top board in the hydraulic cylinder bracing frame 11.No. 1 axle 36 is fixed between the upper surface and upper end cover of hydraulic cylinder, and an end of linear bearing and the end of piston rod are fixedly connected with, and the other end is connected inner core and is connected with displacement transducer.The end of the lower piston rod of hydraulic cylinder 9 is fixedly connected with an end of pressure transducer 8 by screw thread, pressure transducer 8 other ends are connected by a studs with threaded hole on the elastic device 7 right side connecting plates, and the threaded hole on an end of No. 1 load bar 6 and the elastic device 7 left side connecting plates is threaded.
3. Simulated Arbor 5
Simulated Arbor 5 is to be the bar class formation spare of the cuboid of square or rectangle at an xsect, and an end and a spheroid of Simulated Arbor 5 are connected.Simulated Arbor 5 is installed on the cutterhead of tested power servo saddle 4, replaces cutter that it is implemented fail-test.
Three. the unit head loading section
Described unit head loading section comprises bearing loading device 22 that simulation cutting power loads, bearing loading device base 23, No. 2 load bars 21, spring coupling 24, dynamometer machine 25, XY worktable 26.
1. bearing loading device
Consult Fig. 1 and Fig. 4, described bearing loading device 22 comprises 29, No. 1 bearings 30 of left bearing lid, housing 31,32, No. 2 bearings 33 of spacer ring, end cap 34 and right bearing lid 35.
Left bearing lid 29 is bolted on the left side of housing 31, No. 1 bearing 30 and No. 2 bearings 33 are installed in the central through hole of housing 31, spacer ring 32 is installed between No. 1 bearing 30 and No. 2 bearings 33, the three is followed successively by contact and connects, No. 1 bearing 30 inner rings contact with No. 2 load bar 21 shaft shoulders and play positioning action, No. 2 bearing 33 applies pretightning force and plays the axial location effect by the end cap 34 that is fixed on housing 31 right sides, and right bearing lid 35 is bolted on the end cap 34.Be connected for interference fit between No. 2 load bars 21 and No. 1 bearing 30 inner ring and No. 2 bearing 33 inner rings.
2. bearing loading device base
Consult Fig. 1 and Fig. 5, described bearing loading device base 23 is that foursquare rectangular parallelepiped column forms by a foursquare mounting base and an xsect, for being welded to connect, the center of mounting base is on the axis of symmetry of rectangular parallelepiped column between the bottom face of foursquare mounting base and rectangular parallelepiped column.The two ends of foursquare mounting base arrange respectively a through hole that is used for erection bolt, the upper surface of rectangular parallelepiped column is processed into U-shaped groove, the lower end of bearing loading device 22 is positioned in this U-shaped groove, and contacts with U-shaped groove left and right sides, with groove bottom the gap of 2 ∽ 3mm is arranged.
3.2 number load bar
Described No. 2 load bars 21 are axle class formation spare, one (left side) end of No. 2 load bars 21 is installed on the right-hand member of dynamic tool apron 20 by spring chuck, No. 2 the load bar left end also is provided with the shaft shoulder, the bearing loading device 22 that is installed in No. 2 load bar 21 1 ends is played the axial location effect, and the other end of No. 2 load bars 21 is connected transmitting torque with spring coupling 24 keys.
4. dynamometer machine
Adopting model among the dynamometer machine 25(embodiment is the electric eddy current dynamometer of DW10) be installed on the XY worktable 26 by bolt, XY worktable 26 is installed on the ground black iron 1 by T-shaped bolt, namely be installed on the ground black iron 1 on power servo saddle base 2 right sides, the axis of rotation of dynamometer machine 25 is in parallel with vertical plane of symmetry of ground black iron 1, and parallel with the upper workplace of ground black iron 1.The output terminal flange of dynamometer machine 25 is connected with one (right side) end flanges bolt of spring coupling 24, another of spring coupling 24 (left side) end is connected with one (right side) the end key of No. 2 load bars 21, the right-hand member of the dynamic tool apron 20 on another of No. 2 load bars 21 (left side) end and the tested power servo saddle 4 is connected the axis of rotation of the axis of rotation of dynamometer machine 25 output shafts, the axis of rotation of spring coupling 24, No. 2 loading bars 21 and the axis of rotation conllinear of the dynamic tool apron 20 on the tested power servo saddle 4 by spring chuck.The effect of cooler to dynamometer machine 25(except the water-cooled not such as electric dynamometer) chilled water is provided.
Four. automatic control section
Consult Fig. 6, described automatic control section comprises upper industrial computer, the next Programmable Logic Controller PLC, A/D card, D/A card, the next Dynamometer Control instrument and cooler control section.
Described torque sensor and speed probe all are the sensors of dynamometer machine 25 inside, by signal amplifier and A/D card with the torque value that loads and speed feedback to upper industrial computer.
The up direction of described the next Programmable Logic Controller PLC and upper industrial computer communication, down direction is connected respectively unit head motor driver and solenoid directional control valve and is connected with the cutter motor driver, the output terminal of cutter motor driver is connected power interface and is connected with the encoder interfaces electric wire with the cutterhead servomotor, the output terminal of unit head motor driver is connected power interface and is connected with the encoder interfaces electric wire with the unit head servomotor.
Upper industrial computer control interface is to be worked out by VB, after the mode of operation and target station of the selected power servo saddle 4 in control interface, carry out serial communication with the next Programmable Logic Controller PLC by RS232C, the first output current control of the next Programmable Logic Controller PLC electromagnetic switch valve events, 20 disengagements of unit head tool rest and the cutterhead controlled on the tested power servo saddle 4 unclamp, upper industrial computer receives that unit head tool rest 20 is thrown off and cutterhead unclamp determine signal afterwards export target station signal and enabling signal to the cutter motor driver, after the tested power servo saddle 4 of cutter motor driver control forwards required station to, the cutter motor driver feeds back to location end signal and current station signal to the next Programmable Logic Controller PLC, and upper industrial computer reads location end signal and current station signal by serial ports, such as fault feedback alarm signal then, output current was controlled the electromagnetic switch valve events after the next Programmable Logic Controller PLC received location end signal and current station signal, control the cutterhead locking (if tested cutter spacing is the unit head cutter spacing, then must control the unit head engagement) of tested power servo saddle 4.Receive locking and determine to feed back to upper industrial computer together with the current station signal behind the signal, finish a tool changing.
Described the next its up direction of Dynamometer Control instrument is connected with the RS-232C port of upper industrial computer by the RS-232C port, and the next Dynamometer Control instrument output control signal is controlled the moment of torsion that dynamometer machine 25 loads to dynamometer machine 25.A/D plate by upper industrial computer torque sensor and speed probe amplify the signal that detects through signal amplifier after carries out the numerical control collection, realizes closed-loop control, and the moment of torsion that loads and rotating speed show in real time at VB control interface.Cooler is electrically connected with upper industrial computer, when dynamometer machine 25 needs chilled water when work, controls cooler by upper industrial computer and provides chilled water to dynamometer machine 25.
Consult Fig. 2, provided the schematic diagram to Simulated Arbor 5 load tests among the figure, cutting force size and the direction of simulation by regulating the mutual alignment of cutting force loading bracing or strutting arrangement, guarantee that direction and the angle of 9 loading forces of hydraulic cylinder meets the demands at first as required.In the selected certain parameter in VB control interface, comprise the target station, load dynamic and static cutting force size and waveform, by the next Programmable Logic Controller PLC control solenoid directional control valve and cutter motor driver, forward the target station to, and the target station is carried out load test.In loading procedure, carry out Real Time Monitoring for upper industrial computer the loading force signal feedback by pressure transducer 8, signal amplifier and A/D plate.
The principle of work of the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid:
Consult Fig. 1, schematic diagram when having provided No. 2 load bar load tests among the figure, at first forward the station that needs test to, then No. 2 load bars are installed on the unit head tool rest 20, bearing loading device 22 is installed on No. 2 load bars 21, and the right-hand member of No. 2 load bars 21 is by being connected with dynamometer machine 25 output terminals to spring coupling 24.Before test, first according to dynamic and static cutting force size and direction, adjust position and the angle of bearing loading device 22, the axis of No. 1 load bar 6 can be registered on the cylindrical sphere on the housing 31 in the bearing loading device 22.Control by upper industrial computer at last, selected certain parameter is passed through RS-232C port and the communication of the next Dynamometer Control instrument at VB control interface, the next Dynamometer Control instrument control dynamometer machine 25 applies moment of torsion for No. 2 load bars 21 that rotate, torque sensor and speed probe detect signal and feed back to upper industrial computer by signal amplifier and A/D card, carry out closed-loop control, carry out simultaneously Real Time Monitoring.Simultaneously upper industrial computer control cooler provides chilled water for dynamometer machine 25, so that dynamometer machine can turn round for a long time normally.
The power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid described in the utility model is when carrying out fail-test to tested power servo saddle 4, and the cutting operating mode of simulation sets the cutting force charger as required.Set loading force at the VB interface, vibration frequency, load waveform, load time, load the parameters such as moment of torsion and rotating speed, after on-test, upper industrial computer is controlled tested power servo saddle 4 random position to the target station, after cutterhead clamps, the control servo-valve loaded tested power servo saddle 4 after upper industrial computer received and clamps feedback signal, after loading procedure finishes, the piston rod of servo valve control hydraulic cylinder 9 is retracted, upper industrial computer continues the tested power servo saddle 4 of control and navigates to next target station, after the clamping, continue again loading procedure, under the automatic control and monitoring of upper industrial computer, whole process of the test circulation is constantly carried out in an orderly manner.
Embodiment described in the utility model can understand and use the utility model for the ease of these those skilled in the art, the utility model is a kind of embodiment of optimization, or perhaps a kind of better concrete technical scheme, it is only applicable to the different model in the certain limit, the fail-test of the power servo saddle of different size and numerical control brick tower knife rest, different model outside the scope, the fail-test of the power servo saddle of different size, basic technical scheme is constant, but the specifications and models of its used parts will change thereupon, such as power servo saddle backing plate, the selections of the standard component such as pull pressure sensor and dynamometer machine etc. are therefore the utility model is not limited to implement the description of this a kind of more specific technical scheme.If relevant technician in the situation that adhere to that the utility model basic technical scheme makes that the equivalent structure that does not need through creative work changes or various modification all in protection domain of the present utility model.
Claims (6)
1. power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid, comprise power servo saddle support section, described power servo saddle support section comprises power servo saddle base (2) and power servo saddle backing plate (3), power servo saddle backing plate (3) is fixedly connected with by the top board of bolt with power servo saddle base (2), and power servo saddle base (2) is by the T-shaped lower left that is bolted to ground black iron (1); It is characterized in that, the described power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid also comprises cutting force loading section and unit head loading section;
Described cutting force loading section comprises that Simulated Arbor (5), cutting force load bracing or strutting arrangement and cutting force charger, cutting force loading bracing or strutting arrangement is fixed on power servo saddle base (2) the top-right ground black iron (1) by cutting force charger base (18) wherein, the hydraulic cylinder bracing frame (11) of cutting force charger by wherein is bolted to cutting force and loads on No. 2 slide plates (12) in the bracing or strutting arrangement, and an end of Simulated Arbor (5) is installed on the cutterhead of tested power servo saddle (4);
Described unit head loading section comprises bearing loading device (22), bearing loading device base (23), No. 2 load bars (21), spring coupling (24), dynamometer machine (25) and XY worktable (26);
Dynamometer machine (25) is installed on the XY worktable (26) by bolt, XY worktable (26) is installed on the ground black iron (1) on power servo saddle base (2) right side by T-shaped bolt, the axis of rotation of dynamometer machine (25) is parallel with vertical plane of symmetry of ground black iron (1), and parallel with the upper workplace of ground black iron (1), the output terminal flange of dynamometer machine (25) is connected with the right-hand member flange bolt of spring coupling (24), the left end of spring coupling (24) is connected with the right-hand member key of No. 2 load bars (21), the left end of No. 2 load bars (21) is installed in the right-hand member of the dynamic tool apron (20) on the tested power servo saddle (4) by spring chuck, it is upper for being rotationally connected that bearing loading device (22) is sleeved on No. 2 load bars (21), the bottom of bearing loading device (22) is connected the axis of rotation of dynamometer machine (25) output shaft with the top of bearing loading device base (23) is equipped for contacting, the axis of rotation of spring coupling (24), the axis of rotation conllinear of the dynamic tool apron (20) on the axis of rotation of No. 2 loading bars (21) and the tested power servo saddle (4).
2. according to the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid claimed in claim 1, it is characterized in that, described cutting force loads bracing or strutting arrangement and is comprised of cutting force charger base (18), directions X guide rail (16), 2 identical Y-direction guide rail (17), No. 1 slide plate (15), left front support (28), right front support (14), rotating shaft (13), ladder bearing pin (27) and No. 2 slide plates (12) of structure;
2 identical Y-direction guide rails (17) of structure adopt bolt to be installed in parallel to each other the both sides of upper workplace in the cutting force charger base (18), directions X guide rail (16) adopts and to be bolted on the identical Y-direction guide rail (17) of two structures, vertical plane of symmetry of the Y-direction guide rail (17) that vertical plane of symmetry of directions X guide rail (16) is identical with 2 structures is vertical, No. 1 slide plate (15) is fixed on the directions X guide rail (16), left front support (28) and right front support (14) are installed in respectively the two ends of No. 1 slide plate (15), rotating shaft (13) is installed between left front support (28) and the right front support (14) and adopts bolt to fix, and No. 2 slide plates (12) are fixedly connected with rotating shaft (13) with bolt by ladder bearing pin (27).
3. according to the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid claimed in claim 1, it is characterized in that, described cutting force charger comprises No. 1 load bar (6), elastic device (7), pressure transducer (8), hydraulic cylinder (9), oscillating bearing (10), hydraulic cylinder bracing frame (11), joint bearing block, linear bearing and No. 1 axle (36);
Described hydraulic cylinder (9) is selected single piston and double-piston rod-type hydraulic jack, the upper surface of hydraulic cylinder (9) is fixedly connected with a upper end cover by four double-screw bolts, hydraulic cylinder (9) is hinged on the lower surface of top board in the hydraulic cylinder bracing frame (11) by upper end cover and oscillating bearing (10), fix No. 1 axle (36) between the upper surface of upper end cover and hydraulic cylinder (9), the axis of the upper piston rod in the axis of No. 1 axle (36) and the hydraulic cylinder (9) is parallel, being set with on No. 1 axle (36) can be at the linear bearing of No. 1 axle (36) slip, one end of linear bearing and the end of upper piston rod are fixedly connected with, the inner core of the displacement transducer in the other end of linear bearing and the control section of being connected connects, the end of the lower piston rod of hydraulic cylinder (9) is fixedly connected with by the end of screw thread with pressure transducer (8), the other end of pressure transducer (8) is connected by a studs with tapped through hole on the right side connecting plate of elastic device (7), and the tapped through hole on an end of No. 1 load bar (6) and the left side connecting plate of elastic device (7) is threaded.
4. according to the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid claimed in claim 3, it is characterized in that, described elastic device (7) is comprised of with 2 identical nuts of specification left side web joint, right side web joint, 2 identical sleeve, 2 identical bolts of specification of structure, and wherein: the left side web joint is identical with the right side connecting board structure;
Described left side web joint and right side web joint respectively are a rectangular flat plate, its center is provided with tapped through hole, respectively there is a through hole both sides of tapped through hole, the external diameter of the sleeve that 2 structures are identical is greater than the diameter of the through hole of both sides on left side web joint and the right side web joint, 2 identical bolts of specification insert in the through hole of both sides on left side web joint and the right side web joint, the identical sleeve set of 2 structures on the left side web joint bolt identical with 2 specifications between the web joint of right side, again by the identical nut of 2 structures with the left side web joint, the sleeve that the right side web joint is identical with 2 structures is fixed together.
5. according to the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid claimed in claim 1, it is characterized in that, described bearing loading device (22) comprises left bearing lid (29), No. 1 bearing (30), housing (31), spacer ring (32), No. 2 bearings (33), end cap (34) and right bearing lid (35);
Left bearing lid (29) is bolted on the left side of housing (31), No. 1 bearing (30) is installed in the central through hole of housing (31) with No. 2 bearings (33), spacer ring (32) is installed between No. 1 bearing (30) and No. 2 bearings (33), the three is followed successively by contact and connects, No. 2 bearings (33) are connected with end cap (34) contact on being fixed on housing (31) right side, and right end cap (35) is bolted on the end cap (34).
6. according to the power servo saddle reliability test bench that is loaded by dynamometer machine and hydraulic hybrid claimed in claim 1, it is characterized in that, described bearing loading device base (23) is that foursquare rectangular parallelepiped column forms by a foursquare mounting base and an xsect, between the bottom face of foursquare mounting base and rectangular parallelepiped column for being welded to connect, the center of mounting base is on the axis of symmetry of rectangular parallelepiped column, the two ends of foursquare mounting base arrange respectively a through hole that is used for erection bolt, the U-shaped groove that the upper surface of rectangular parallelepiped column is processed into and the lower end of bearing loading device (22) is equipped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220302368 CN202693350U (en) | 2012-06-26 | 2012-06-26 | Dynamometer and hydraulic pressure mixed loading power servo tool rest reliability test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220302368 CN202693350U (en) | 2012-06-26 | 2012-06-26 | Dynamometer and hydraulic pressure mixed loading power servo tool rest reliability test bed |
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| Publication Number | Publication Date |
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| CN202693350U true CN202693350U (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220302368 Withdrawn - After Issue CN202693350U (en) | 2012-06-26 | 2012-06-26 | Dynamometer and hydraulic pressure mixed loading power servo tool rest reliability test bed |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735484A (en) * | 2012-06-26 | 2012-10-17 | 吉林大学 | Dynamometer and hydraulic mixed loading table for testing reliability of power servo knife rest |
| CN104075903A (en) * | 2014-06-30 | 2014-10-01 | 南京蒙福液压机械有限公司 | Hydraulic support test device |
| CN106840644A (en) * | 2017-04-10 | 2017-06-13 | 吉林大学 | Electromagnetism and electric pushrod mix-loaded knife rest reliability test bench |
| CN106944879A (en) * | 2017-04-10 | 2017-07-14 | 吉林大学 | Double tool rest reliability test and the method for detecting double tool rest rotating accuracy |
-
2012
- 2012-06-26 CN CN 201220302368 patent/CN202693350U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735484A (en) * | 2012-06-26 | 2012-10-17 | 吉林大学 | Dynamometer and hydraulic mixed loading table for testing reliability of power servo knife rest |
| CN102735484B (en) * | 2012-06-26 | 2014-09-10 | 吉林大学 | Dynamometer and hydraulic mixed loading table for testing reliability of power servo knife rest |
| CN104075903A (en) * | 2014-06-30 | 2014-10-01 | 南京蒙福液压机械有限公司 | Hydraulic support test device |
| CN106840644A (en) * | 2017-04-10 | 2017-06-13 | 吉林大学 | Electromagnetism and electric pushrod mix-loaded knife rest reliability test bench |
| CN106944879A (en) * | 2017-04-10 | 2017-07-14 | 吉林大学 | Double tool rest reliability test and the method for detecting double tool rest rotating accuracy |
| CN106840644B (en) * | 2017-04-10 | 2019-12-24 | 吉林大学 | Reliability test bed for electromagnetic and electric push rod mixed loading tool rest |
| CN106944879B (en) * | 2017-04-10 | 2023-02-03 | 吉林大学 | Double-tool-rest reliability testing device and method for detecting rotation precision of double tool rests |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130123 Effective date of abandoning: 20140910 |
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| RGAV | Abandon patent right to avoid regrant |