CN114800156B

CN114800156B - Super smart machine is used in automobile bearing processing

Info

Publication number: CN114800156B
Application number: CN202210533962.8A
Authority: CN
Inventors: 池根才
Original assignee: Saatchi Molding Technology Co ltd Yangzhou City
Current assignee: Saatchi Molding Technology Co ltd Yangzhou City
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-12-30
Anticipated expiration: 2042-05-17
Also published as: CN114800156A

Abstract

The invention relates to the field of bearing machining equipment and discloses a superfinishing machine for machining an automobile bearing, which comprises a machine table, an outer ring to be machined and an inner ring to be machined, wherein a main rotating shaft is arranged in the middle of the top end of the machine table and is driven to rotate by a motor set arranged at the bottom of the machine table, a lower four-jaw chuck and an upper four-jaw chuck are sequentially arranged on the main rotating shaft from bottom to top, and the outer ring and the inner ring are respectively fixed through the lower four-jaw chuck and the upper four-jaw chuck. Through the design of the main rotating shaft consisting of the lower rotating shaft and the upper rotating shaft on the machine table, the structure linkage design of the upper four-jaw chuck and the lower four-jaw chuck of the main rotating shaft and the structure linkage design of the two movable ring plates matched with the upper four-jaw chuck are realized, the simultaneous fine grinding processing is carried out on the outer side grooves of the inner ring and the outer side grooves of the inner ring of a pair of bearings, the work efficiency is improved, the groove depth adaptation degree of the outer ring and the inner ring is high, and the phenomenon that the groove depth adaptation degree of the outer ring and the inner ring of a pair of bearings is unqualified is not easy to occur.

Description

Super smart machine is used in automobile bearing processing

Technical Field

The invention relates to the field of bearing processing equipment, in particular to a superfinishing machine for processing an automobile bearing.

Background

The bearing is a widely used supporting mechanical rotator, reduces the friction coefficient in the movement process of the bearing and ensures the rotation precision of the bearing, the outer wall and the groove of the bearing are required to be finely ground by a superfinishing machine at the later stage of the processing process of the bearing so as to reduce the roughness of the surface of the bearing and improve the precision and the service life of the bearing, the existing superfinishing machine presses oilstone onto a rotating workpiece with lower pressure to form a surface contact state, and meanwhile, the oilstone performs higher-frequency axial vibration.

However, since the bearing is mainly composed of the bearing inner ring, the rolling body and the bearing outer ring, the rolling body is located at the groove between the bearing inner ring and the bearing outer ring, and when the existing superfinishing machine is used for finely grinding the groove of the bearing inner ring and the bearing outer ring, the grinding is separately performed, namely, a batch of bearing inner rings are firstly processed, and then a batch of bearing outer rings are processed, or the bearing inner rings and the bearing outer rings are respectively processed by two superfinishing machines.

However, when super smart machine processing carried out axial application of force and axial vibration to and the produced error of wearing and tearing consumption of oilstone, this can make, bearing inner race and bearing outer lane's slot degree of depth, width matching degree are not high, have the great unqualified condition of error easily, thereby lead to single super smart machine to the machining efficiency and the processingquality of bearing not high, for this reason, provide a super smart machine for automobile bearing processing, carry out simultaneously, synchronous processing to the slot of a pair of inner circle and the outer lane of bearing, in order to solve this technical problem.

Disclosure of Invention

The invention provides a superfinishing machine for machining an automobile bearing, which has the advantages of high matching degree of grooves of inner and outer rings of the bearing and high machining efficiency, and solves the technical problems in the background technology.

In order to achieve the above purpose, the invention provides the following technical scheme to realize: the utility model provides a super smart machine is used in automobile bearing processing, includes board and treats outer lane, the inner circle of processing, the middle part on board top is equipped with main pivot, and main pivot is by locating the motor element drive of board bottom is rotatory, by supreme next four-jaw chuck and the upper four-jaw chuck of being equipped with in proper order down in the main pivot, outer lane and inner circle pass through respectively next four-jaw chuck and upper four-jaw chuck are fixed, and the outside of main pivot is equipped with two the same movable ring boards, and two but movable ring boards level, longitudinal movement, two are equipped with mounting panel and oilstone on the movable ring board respectively, and one of them oilstone carries out the correct grinding to the inboard slot of outer lane, and another oilstone carries out the correct grinding to the outside slot of inner circle simultaneously.

Optionally, main pivot comprises lower pivot and upper pivot, the bottom of upper pivot cup joints with the top activity of lower pivot, and the swing joint position of upper pivot bottom and lower pivot is the hexagonal prism, lower pivot can drive upper pivot and rotate together, lower pivot cup joints with the middle part bearing of board, lower pivot is rotatory through the motor assembly drive.

Optionally, the middle part of the top end of the upper transverse plate is provided with a first hydraulic cylinder, and a piston shaft of the first hydraulic cylinder is sleeved with the top end bearing of the upper rotating shaft.

Optionally, the four corners of board bottom is equipped with the supporting leg, and the top fixed mounting of board has the bracing piece that is located the supporting leg top, four movable sleeve is equipped with spacing diaphragm on the bracing piece, spacing diaphragm only can reciprocate under the spacing of bracing piece, the equal fixed mounting in both sides at spacing diaphragm top is two the top fixedly connected with spacing ring board of vertical axis, two the inboard fixedly connected with position ring cover of spacing ring board, and the axial lead of position ring cover and the axial lead of main pivot are located same straight line, two the activity ring board is located the top and the bottom of position ring cover respectively, two one side fixedly connected with of activity ring board is located the board that bulldozes in the position ring cover outside, and two the spout that cup joints with bulldozing the board activity is seted up to one side of spacing ring board, two the side fixedly connected with of spacing ring board is located the curb plate that bulldozes the board outside, the middle part of curb plate side is equipped with the second pneumatic cylinder, and the piston shaft of second pneumatic cylinder bulldozes the side fixed connection of board.

Optionally, fixed cover is equipped with the stopper that is located spacing diaphragm top on the bracing piece, be equipped with the spring of activity suit on the bracing piece between stopper and the spacing diaphragm, fixed cover is equipped with drive bevel gear in the next pivot, the both sides at board top fixed mounting respectively have the supporting shoe, bearing suit has horizontal rotating shaft on the supporting shoe, and the fixed cover of one end of horizontal rotating shaft is equipped with driven bevel gear, and driven bevel gear's outer edge meshes with drive bevel gear's outer edge, the fixed cover of the other end of horizontal rotating shaft is equipped with the eccentric wheel, the outer edge of eccentric wheel and the bottom swing joint of spacing diaphragm.

Optionally, the jack catch fixedly connected with locating plate of upper four-jaw chuck bottom, the fixed sleeve in one side of locating plate is equipped with the universal driving shaft, the fixed sleeve in bottom of universal driving shaft is equipped with the locating piece, the outside of locating piece and the inboard swing joint of inner circle.

Optionally, the inboard of activity crown plate and the outside of main pivot are contactless all the time, two through locating a plurality of stud nut fixed connection on outer edge between the activity crown plate, stud nut's interior edge is located to the mounting panel, and the one end difference fixed mounting that the activity crown plate was kept away from to two mounting panels has the oilstone.

Optionally, one side of position ring cover top spacing crown plate is equipped with the screens device, the screens device includes the installation piece of fixed mounting at spacing crown plate top, and the top fixedly connected with body of installation piece, the middle part movable sleeve of body inner chamber is equipped with the lead screw, the outside and the fixedly connected with of body side cap are extended to the one end of lead screw transfer the wheel, the lead screw cup joints with the side cap activity of body, and the lead screw upper thread has cup jointed the swivel nut that is located the body inside, the outside of swivel nut cup joints with the inner wall activity of body, two limit axles of side fixedly connected with of swivel nut, and two limit axle is located the outer edge of lead screw, two the one end that the swivel nut was kept away from to the limit axle extends the outside and the fixed connection limit pole that extend the body side, the side of limit pole and the inboard swing joint who bulldozes the board.

The invention provides a super-finishing machine for machining an automobile bearing, which has the following beneficial effects:

1. this super-fine machine for automobile bearing processing, through the main pivot design that constitutes by next pivot and upper pivot on the board, make the structure linkage design of lower position four-jaw chuck and two movable ring boards of upper position four-jaw chuck cooperation on the main pivot, so that carry out the accurate grinding simultaneously to the outside slot of the outer lane inboard slot of a pair of bearing and inner circle simultaneously, when having improved work efficiency, make the slot depth adaptation degree of outer lane and inner circle high, the unqualified phenomenon of the slot depth adaptation degree of the outer lane of a pair of bearing and inner circle is difficult to appear, compare in current bearing processing super-fine machine and carry out the batch processing to single outer lane or inner circle, the effectual pressure of having avoided because of exerting has the error, and the wearing and tearing in the oilstone use, the depth adaptation degree that leads to the outer lane inboard slot of a pair of bearing and inner circle outside slot is not high, the unqualified problem appears easily, thereby the processingquality of bearing has been improved.

2. This super smart machine is used in automobile bearing processing, when driving outer lane and inner circle rotation through the motor assembly, still cooperate the elasticity of spring, can be so that the vertical axis, the spacing ring board, the position ring cover, the activity crown plate, mounting panel and oilstone wholly reciprocate, so that carry out the processing to the slot of outer lane and inner circle, make the width value of the outer lane of a pair of bearing and inner circle slot the same, the whole adaptation degree of outer lane inboard slot and inner circle outside slot has further been improved, and then the quality of bearing processing has been improved, and, the luffing motion of oilstone is driven simultaneously by the motor assembly of drive outer lane and inner circle rotation, make super smart quick-witted overall structure simpler, need not the extra equipment of drive oilstone wobbling, the cost is saved.

3. This super smart machine is used in automobile bearing processing, act on the outer lane through the screens device to the oilstone, the axial feed of the slot of inner circle during processing is carried out spacingly and is blockked, avoid the oilstone when polishing the slot of outer lane and inner circle, the axial feeds too much, the slot degree of depth that leads to outer lane and inner circle is too dark, influence processingquality's problem, and position through adjusting the restriction pole, not only be convenient for process the slot of the different degree of depth, still make outer lane and inner circle slot processing handle on, do not receive the influence of oilstone wearing and tearing degree of depth, the work efficiency and the quality of bearing processing have further been improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a bottom view of the upper spindle structure of FIG. 1 according to the present invention;

FIG. 3 is a bottom cut away view of the retaining collar structure of FIG. 1 of the present invention, taken from a-a;

FIG. 4 is a side cutaway view of the movable ring plate structure of FIG. 1 in accordance with the present invention;

FIG. 5 is a top view of the movable ring plate structure of FIG. 4 according to the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 1A;

FIG. 7 is a bottom view of the inner race construction of FIG. 1 in accordance with the present invention;

fig. 8 is a schematic structural view of the locking device shown in fig. 1 according to the present invention.

In the figure: 1. a machine platform; 2. a support bar; 3. an upper transverse plate; 4. a lower four-jaw chuck; 5. an upper four-jaw chuck; 6. a lower rotary shaft; 7. an upper rotating shaft; 8. a limiting transverse plate; 9. a vertical axis; 10. a limit ring plate; 11. a positioning ring sleeve; 12. a movable ring plate; 13. mounting a plate; 14. -oilstone; 15. a push plate; 16. a side plate; 17. a supporting block; 18. a driven bevel gear; 19. an eccentric wheel; 20. a drive bevel gear; 21. a limiting block; 22. a spring; 23. a stud nut; 24. positioning a plate; 25. a linkage shaft; 26. positioning a block; 27. a clamping device; 271. a tube body; 272. a screw rod; 273. a threaded sleeve; 274. defining an axis; 275. a restraining bar; 276. adjusting the wheels; 28. an outer ring; 29. and an inner ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1, a superfinishing machine for machining automobile bearings comprises a machine table 1, an outer ring 28 to be machined and an inner ring 29, wherein supporting legs are arranged at four corners of the bottom of the machine table 1, a supporting rod 2 positioned above the supporting legs is fixedly installed at the top of the machine table 1, an upper transverse plate 3 is fixedly connected to the top end of the supporting rod 2, a rotatable main rotating shaft is arranged in the middle between the machine table 1 and the upper transverse plate 3 and consists of a lower rotating shaft 6 and an upper rotating shaft 7, the bottom end of the upper rotating shaft 7 is movably sleeved with the top of the lower rotating shaft 6, please refer to fig. 2, the movably connected part of the bottom end of the upper rotating shaft 7 and the lower rotating shaft 6 is a hexagonal prism, when the bottom end of the upper rotating shaft 7 is inserted into the lower rotating shaft 6, the lower rotating shaft 6 can drive the upper rotating shaft 7 to rotate, the lower rotating shaft 6 is sleeved with a middle bearing of the machine table 1, a first hydraulic cylinder is arranged in the middle of the top end of the upper rotating shaft 3, a piston shaft of the first hydraulic cylinder is sleeved with a top bearing of the upper rotating shaft 7, so that the piston rod does not affect the upper rotating shaft 7 to rotate, and the piston rod can drive the upper rotating shaft 7 and the four jaws 7 and the upper jaw chuck 5 and the four jaws 5 and the lower chuck 5 to move up and down through the four jaws 5, and the upper chuck, and the four jaws 5, and the lower chuck, respectively.

The four support rods 2 are movably sleeved with limiting transverse plates 8, the limiting transverse plates 8 only can move up and down under the limiting of the support rods 2, two sides of the tops of the limiting transverse plates 8 are fixedly installed on vertical shafts 9, the top ends of the two vertical shafts 9 are fixedly connected with limiting annular plates 10, the inner sides of the two limiting annular plates 10 are fixedly connected with locating annular sleeves 11, the axial lines of the locating annular sleeves 11 and the axial line of a main rotating shaft are located on the same straight line, the top and the bottom of each locating annular sleeve 11 are provided with movable annular plates 12, please refer to fig. 3-5, a plurality of stud nuts 23 arranged on the outer edges are fixedly connected between the two movable annular plates 12, please refer to fig. 1 continuously, the inner sides of the two movable annular plates 12 are not in contact with the outer side of the main rotating shaft all the time, one sides of the two movable annular plates 12 are fixedly connected with pushing plates 15 located on the outer sides of the locating annular sleeves 11, one sides of the two limiting annular plates 10 are provided with sliding grooves movably sleeved with the pushing plates 15, the sides of the two limiting annular plates 10 are fixedly connected with pushing plates 16 located on the outer sides of the side plates 15, a second hydraulic cylinder is arranged in a horizontal moving mode, and a piston cylinder is driven by the piston cylinder 15 moving piston cylinder which moves horizontally.

The movable ring plates 12 below and above the positioning ring sleeve 11 are respectively and fixedly provided with a mounting plate 13, the two mounting plates 13 are respectively arranged at the inner edges of the two movable ring plates 12, one ends of the two mounting plates 13 far away from the movable ring plates 12 are respectively and fixedly provided with oilstones 14, wherein the oilstones 14 above the positioning ring sleeve 11 finely grind the outer side grooves of the inner ring 29, and the oilstones 14 below the positioning ring sleeve 11 finely grind the inner side grooves of the outer ring 28.

The main rotating shaft formed by the lower rotating shaft 6 and the upper rotating shaft 7 rotates simultaneously, the driven bevel gear 18 is clamped by the lower four-jaw chuck 4, the inner ring 29 is clamped by the upper four-jaw chuck 5, the outer ring 28 and the inner ring 29 rotate simultaneously and simultaneously, after rightward pressure is applied to the push plate 15 by the piston shaft of the second hydraulic cylinder, the two oilstones 14 respectively have the same pressure on the inner groove of the outer ring 28 and the outer groove of the inner ring 29, and therefore after fine grinding is performed, the depth adaptation degree of the grooves of the outer ring 28 and the inner ring 29 is high, the phenomenon that the depth adaptation degree of the grooves of the outer ring 28 and the inner ring 29 of a pair of bearings is not qualified is not prone to occur, compared with the phenomenon that when an existing bearing processing super-finishing machine performs batch processing on a single outer ring 28 or inner ring 29, errors are caused by applied pressure, abrasion of the oilstones 14 in the using process is not high, the depth adaptation degree of the grooves of the inner ring 28 and the inner ring 29 of a pair of bearings is prone to occur, the quality is not qualified, and therefore the processing quality of the bearings is improved, and the outer ring 28 and the inner ring 29 are processed simultaneously at a single time, and further improving working efficiency.

The fixed cover is equipped with the stopper 21 that is located spacing diaphragm 8 top on the bracing piece 2, be equipped with the spring 22 of activity suit on the bracing piece 2 between stopper 21 and the spacing diaphragm 8, the fixed cover is equipped with drive bevel gear 20 on the lower pivot 6, the both sides at board 1 top are fixed mounting respectively has supporting shoe 17, bearing suit has the horizontal rotation axle on supporting shoe 17, the fixed cover of one end of horizontal rotation axle is equipped with driven bevel gear 18, and driven bevel gear 18's outer edge meshes with the outer edge of drive bevel gear 20, the fixed cover of other end of horizontal rotation axle is equipped with eccentric wheel 19, the outer edge of eccentric wheel 19 and the bottom swing joint of spacing diaphragm 8.

The driven bevel gear 18 is driven to rotate simultaneously by the driving bevel gear 20 on the lower rotating shaft 6, and through horizontal rotating shaft transmission, the eccentric wheel 19 is made to rotate and is matched with the elastic force of the spring 22 above the limiting transverse plate 8, so that the limiting transverse plate 8 integrally moves up and down at high frequency, the vertical shaft 9, the limiting ring plate 10, the positioning ring sleeve 11, the movable ring plate 12, the mounting plate 13 and the oilstone 14 integrally move up and down, so that grooves of the outer ring 28 and the inner ring 29 are processed, the width values of the grooves of the outer ring 28 and the inner ring 29 of a pair of bearings are the same, the integral adaptation degree of the grooves on the inner side of the outer ring 28 and the grooves on the outer side of the inner ring 29 is further improved, the processing quality of the bearings is further improved, and the oilstone 14 can be driven simultaneously by a motor set for driving the outer ring 28 and the inner ring 29 to rotate up and down, so that the whole structure of the superfinishing machine is simpler, additional equipment for driving the oilstone 14 to swing is not needed, and the cost is saved.

Referring to fig. 6 and 7, the jaw of the upper four-jaw chuck 5 is fixedly connected with a positioning plate 24, one side of the positioning plate 24 is fixedly sleeved with a linkage shaft 25, the bottom of the linkage shaft 25 is fixedly sleeved with a positioning block 26, and the outer side of the positioning block 26 is movably connected with the inner side of the inner ring 29, so that the four positioning blocks 26 limit and fix the inner ring 29 by controlling the four jaws of the upper four-jaw chuck 5, thereby ensuring that the inner ring 29 can rotate simultaneously, in the same direction and at the same speed with the upper four-jaw chuck 5.

Referring to fig. 1, a clamping device 27 is disposed on one side of the limiting ring plate 10 on the top of the positioning ring sleeve 11, referring to fig. 8, the clamping device 27 includes a mounting block fixedly mounted on the top of the limiting ring plate 10, a tube 271 is fixedly connected to the top of the mounting block, a lead screw 272 is movably sleeved on the middle portion of the inner cavity of the tube 271, one end of the lead screw 272 extends out of the side cover of the tube 271 and is fixedly connected with a shifting wheel 276, the lead screw 272 is movably sleeved with the side cover of the tube 271, a screw sleeve 273 located inside the tube 271 is screwed onto the lead screw 272, the outside of the screw sleeve 273 is movably sleeved with the inner wall of the tube 271, two limiting shafts 274 are fixedly connected to the side of the screw sleeve 273, the two limiting shafts 274 are located on the outer edge of the lead screw 272, and one end of the two limiting shafts 274 far away from the screw sleeve 273 extends out of the side of the tube 271 and is fixedly connected with a limiting rod 275, and the side of the limiting rod 275 is movably connected with the inner side of the pushing plate 15.

It is rotatory to drive lead screw 272 through rotating transfer wheel 276, adjustable swivel nut 273 drives restriction lever 275 horizontal migration, thereby act on outer lane 28 to oilstone 14, axial feed when the slot processing of inner circle 29 is carried out spacing blocking, avoid oilstone 14 when polishing outer lane 28 and the slot of inner circle 29, axial feed is too much, lead to the groove depth of outer lane 28 and inner circle 29 too dark, influence processingquality's problem, and through adjusting restriction lever 275's position, not only be convenient for process the slot of the different degree of depth, still make outer lane 28 and inner circle 29 slot processing handle on, do not receive the influence of oilstone 14 degree of wear depth, the work efficiency and the quality of bearing processing have further been improved.

When the superfinishing machine for machining the automobile bearing is used, firstly, a piston shaft of a first hydraulic cylinder drives an upper rotating shaft 7 to move upwards to be separated from a lower rotating shaft 6, then an outer ring 28 is placed on a lower four-jaw chuck 4 and is clamped and fixed by jaws of the lower four-jaw chuck 4, meanwhile, an inner ring 29 is placed at the bottom of the upper four-jaw chuck 5, jaws of the upper four-jaw chuck 5 drive a positioning block 26 to be fixed from the inner side of the inner ring 29, so that grooves of the outer ring 28 and the inner ring 29 are respectively corresponding to two oilstones 14, then the piston shaft of the first hydraulic cylinder is controlled to move downwards to be in contact with the lower rotating shaft 6, the lower rotating shaft 6 is driven by a motor shaft to drive the upper rotating shaft 7 to rotate, so as to drive the outer ring 28 and the inner ring 29 to rotate simultaneously, meanwhile, the piston shaft is driven by a second hydraulic cylinder on the side face of a side plate 16 to move rightwards to apply pressure, so that the two oilstones 14 are axially fed, meanwhile, certain pressure is applied to grooves of the outer ring 28 and the outer ring 29, the driving oilstones 28 and the grooves of the driving stones 14 are pressed, the outer ring 28 and the driving grooves of the driving chain wheel 14 are finely ground, the eccentric wheels 19 are driven by the lower rotating shaft 6, so that the eccentric wheels 19 and the limiting ring 14 are matched with the elastic ring plate 11, the limiting ring plate 11 and the limiting ring plate 11, and the mounting plate 11.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automobile bearing processing is with super smart machine, includes board (1) and outer lane (28), inner circle (29) of waiting to process, its characterized in that: the middle of the top end of the machine table (1) is provided with a main rotating shaft, the main rotating shaft is driven to rotate by a motor set arranged at the bottom of the machine table (1), a lower four-jaw chuck (4) and an upper four-jaw chuck (5) are sequentially arranged on the main rotating shaft from bottom to top, an outer ring (28) and an inner ring (29) are respectively fixed through the lower four-jaw chuck (4) and the upper four-jaw chuck (5), two identical movable annular plates (12) are arranged on the outer side of the main rotating shaft, the two movable annular plates (12) can simultaneously move horizontally and longitudinally, mounting plates (13) and oilstones (14) are respectively arranged on the two movable annular plates (12), one oilstone (14) carries out fine grinding processing on inner side grooves of the outer ring (28), and the other oilstone (14) carries out fine grinding processing on outer side grooves of the inner ring (29);

the main rotating shaft is composed of a lower rotating shaft (6) and an upper rotating shaft (7), the bottom end of the upper rotating shaft (7) is movably sleeved with the top of the lower rotating shaft (6), the movable connection part of the bottom end of the upper rotating shaft (7) and the lower rotating shaft (6) is a hexagonal prism, the lower rotating shaft (6) can drive the upper rotating shaft (7) to rotate together, the lower rotating shaft (6) is sleeved with a middle bearing of the machine table (1), and the lower rotating shaft (6) is driven to rotate through a motor set;

supporting legs are arranged at four corners of the bottom of the machine table (1), supporting rods (2) positioned above the supporting legs are fixedly mounted at the top of the machine table (1), limiting transverse plates (8) are movably sleeved on the four supporting rods (2), the limiting transverse plates (8) can only move up and down under the limiting of the supporting rods (2), two sides of the top of each limiting transverse plate (8) are fixedly mounted on vertical shafts (9), the top ends of the two vertical shafts (9) are fixedly connected with limiting ring plates (10), the inner sides of the two limiting ring plates (10) are fixedly connected with positioning ring sleeves (11), the axial lines of the positioning ring sleeves (11) and the axial line of a main rotating shaft are positioned on the same straight line, the two movable ring plates (12) are respectively positioned at the top and the bottom of the positioning ring sleeves (11), one sides of the two movable ring plates (12) are fixedly connected with pushing plates (15) positioned on the outer sides of the positioning ring sleeves (11), one sides of the two limiting ring plates (10) are provided with sliding grooves sleeved with pushing plates (15), the side of two movable ring plates (10) are fixedly connected with second hydraulic cylinders (16) positioned on the outer sides of the pushing plates (15), and a second hydraulic cylinder (16) is connected with a piston side plate (16) of a second side plate;

a limiting block (21) positioned above the limiting transverse plate (8) is fixedly sleeved on the supporting rod (2), a spring (22) movably sleeved on the supporting rod (2) is arranged between the limiting block (21) and the limiting transverse plate (8), a driving bevel gear (20) is fixedly sleeved on the lower rotating shaft (6), supporting blocks (17) are fixedly installed on two sides of the top of the machine table (1) respectively, a horizontal rotating shaft is sleeved on a bearing on each supporting block (17), a driven bevel gear (18) is fixedly sleeved on one end of the horizontal rotating shaft, the outer edge of the driven bevel gear (18) is meshed with the outer edge of the driving bevel gear (20), an eccentric wheel (19) is fixedly sleeved on the other end of the horizontal rotating shaft, and the outer edge of the eccentric wheel (19) is movably connected with the bottom of the limiting transverse plate (8);

one side of locating ring cover (11) top spacing crown plate (10) is equipped with clamping device (27), clamping device (27) are including the installation piece of fixed mounting at spacing crown plate (10) top, the top fixedly connected with body (271) of installation piece, the middle part movable sleeve of body (271) inner chamber is equipped with lead screw (272), the outside and the fixedly connected with of body (271) side cover are extended to the one end of lead screw (272) transfers driving wheel (276), lead screw (272) cup joints with the side cover activity of body (271), and screw thread cup joints swivel nut (273) that is located body (271) inside on lead screw (272), the outside of swivel nut (273) and the inner wall activity of body (271) cup joint, the side fixedly connected with two limiting shaft (274) of swivel nut (273), and two limiting shaft (274) are located the outer edge of lead screw (272), two limiting shaft (274) keep away from the one end of swivel nut (273) and extend the outside and fixedly connected with limiting rod (275) of body (271) side, the inboard side of bulldozing board (275) and 15 are connected.

2. The superfinishing machine for machining an automobile bearing according to claim 1, wherein: the top fixedly connected with of bracing piece (2) goes up diaphragm (3), the middle part on going up diaphragm (3) top is equipped with first pneumatic cylinder, the piston shaft of first pneumatic cylinder with the top bearing of upper rotating shaft (7) cup joints.

3. The superfinishing machine for machining an automobile bearing according to claim 1, wherein: jack catch fixedly connected with locating plate (24) of last four-jaw chuck (5) bottom, the fixed cover in one side of locating plate (24) is equipped with universal driving shaft (25), the fixed cover in bottom of universal driving shaft (25) is equipped with locating piece (26), the inboard swing joint of the outside of locating piece (26) and inner circle (29).

4. The superfinishing machine for machining the automobile bearing according to claim 1, wherein: the inboard of activity crown plate (12) and the outside of main pivot are contactless, two all the time between activity crown plate (12) through a plurality of stud nuts (23) fixed connection who locates outer edge, the interior edge of stud nut (23) is located in mounting panel (13), and the one end difference fixed mounting that activity crown plate (12) was kept away from in two mounting panels (13) has oilstone (14).