CN210849492U

CN210849492U - High-precision vertical needle gear shell composite grinding machine

Info

Publication number: CN210849492U
Application number: CN201921636735.8U
Authority: CN
Inventors: 刘岳兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-06-26
Anticipated expiration: 2029-09-27

Abstract

The utility model relates to a high-precision vertical needle gear shell composite grinding machine, which comprises a machine body, a stand column and a rotary table, wherein the stand column is provided with a grinding machine head assembly, the grinding machine head assembly comprises a tooth socket grinding wheel assembly and an inner and outer circular end face grinding wheel assembly which are arranged along the transverse direction, the machine body is provided with a rotary table lifting device for driving the rotary table to lift, the rotary table is arranged on the machine body in a lifting way through the rotary table lifting device, the upright post is provided with an X-direction sliding device for driving the grinding machine head assembly to transversely reciprocate, the X-direction sliding device comprises at least two X-direction guide rail pairs, a saddle supported on the X-direction guide rail pairs and an X-direction driving mechanism for driving the saddle to transversely slide, one X-direction guide rail pair is arranged at the top end of the upright post, the other X-direction guide rail pair is arranged on the upright post and is positioned in the oblique lower front of the X-direction guide rail pair at the top end, and the tooth socket grinding wheel assembly and the inner and outer circular end face grinding wheel assemblies are arranged on the saddle. Has the advantages of good equipment rigidity and stable and reliable operation.

Description

High-precision vertical needle gear shell composite grinding machine

Technical Field

The utility model relates to a machine tool technical field, the vertical pin gear shell compound grinding machine who says so definitely.

Background

Industrial robots are important industrial technologies for the intelligentized and flexible development of manufacturing industry and the promotion of industrial upgrading, and are also means for solving the labor shortage caused by the aging of population. The transmission performance of a cycloid reducer, a core component of an industrial robot, directly influences the motion precision of the robot. In the transmission of the cycloid speed reducer, the transmission of the cycloid pin wheel has the largest influence on the motion precision, and the manufacturing precision of the pin gear shell of the cycloid pin wheel determines the stability, the bearing capacity and the service life of the cycloid speed reducer.

The existing grinding processing of the pin gear shell adopts a compound grinding machine, for example, a compound grinding machine tool for grinding the pin gear shell (an authorization notice number CN 103264342B) disclosed in the patent document with chinese patent number CN 201310195905.4, the main structure of which is as follows: the vertical column and the workpiece fixture are arranged on the machine body, the vertical column is provided with a tooth groove grinding wheel head and an inner and outer circular end face grinding wheel head, the tooth groove grinding wheel head comprises a tooth groove grinding wheel spindle and a cylindrical grinding wheel, the inner and outer circular end face grinding wheel head comprises an inner and outer circular end face grinding wheel spindle and a disc-shaped (single-face concave) grinding wheel, the tooth groove grinding wheel head and the inner and outer circular end face grinding wheel head are collectively called a head assembly for convenience of description, the tooth groove grinding wheel head and the inner and outer circular end face grinding wheel head are arranged on the vertical column through a sliding mechanism, the sliding mechanism comprises a lifting mechanism and a horizontal transverse sliding rail mechanism, the tooth groove grinding wheel head and the inner and outer circular end face grinding wheel head are arranged on a Y-direction sliding plate of the horizontal transverse.

The composite grinding machine tool for grinding the gear housing of the existing structure has the following defects: the aircraft nose always holds and adopts glide machanism to hoist on the stand, glide machanism adopts horizontal transverse sliding rail mechanism to install and realizes on elevating system, the grinding machine is the main equipment, its aircraft nose always holds heavy, and equipment is in high-speed running state, the aircraft nose always holds inertia when moving is big, horizontal transverse sliding rail mechanism adopts the Y of plane installation to slide structural design under, there are not enough and the poor problem of operational stability of rigidity, elevating system bears transverse sliding rail mechanism and aircraft nose always holds, elevating system bears heavy, the lifting motion inertia is big, therefore the motor of aircraft nose assembly can form equipment resonance under operation and glide machanism's operation, thereby influence equipment moving reliability, influence the part machining precision. Therefore, the existing composite grinding machine tool cannot well adapt to the grinding processing of the pin gear shell required by high-precision processing.

Disclosure of Invention

The utility model discloses the invention purpose: for overcoming the defect that prior art exists, the utility model provides a move reliable and stable vertical pin gear shell compound grinding machine of high accuracy.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a vertical pin-tooth shell compound grinding machine of high accuracy, is equipped with the stand and is used for the revolving stage of fixed work piece on the fuselage including the fuselage, be equipped with grinding machine head assembly on the stand, grinding machine head assembly includes along the tooth's socket grinding wheel assembly and interior excircle end face grinding wheel assembly of transversely arranging, its characterized in that: the fuselage on be equipped with the revolving stage elevating gear who is used for driving the revolving stage to go up and down, the revolving stage sets up on the fuselage through revolving stage elevating gear liftable, be equipped with the X of drive grinding aircraft nose assembly along horizontal reciprocating motion to the displacement device, X is to the displacement device including two piece at least X to the guide rail vice, support saddle and drive saddle along the X of horizontal slip to actuating mechanism on the X is to the guide rail vice, wherein one X is to the guide rail vice locate the stand top, another X is to the guide rail vice locate on the stand and be located the oblique place ahead of top position X to the guide rail vice, grinding tooth's socket emery wheel assembly and interior excircle terminal surface grinding emery wheel assembly install on the saddle.

By adopting the technical scheme, the saddle moves left and right to be close to the grinding machine head assembly (enter a grinding position), and the rotary table slides up and down in a reciprocating manner to realize tooth socket grinding; the actions of lifting and transverse reciprocating sliding station switching are respectively realized on the rotary table and the grinding machine head assembly, and the number of movable mechanisms matched with the grinding machine head assembly on the upright post is reduced, and the total mass is reduced, so that the rigidity of the grinding machine head supported on the upright post is increased, the inertia of equipment operation is reduced, and the equipment operation is more stable and reliable; in addition, the rotary table is adopted to lift, the grinding machine head assembly is in transverse sliding operation, the grinding machine head adopts the saddle to support the X-direction guide rail pair at the top end of the upright post and the other guide rail pair which is positioned at the oblique lower front part of the X-direction guide rail pair at the top end, so that the rigidity of the saddle supported on the upright post is greatly improved, namely the rigidity of the movable support of the grinding machine head on the upright post is improved, the station switching stability of the transverse sliding of the grinding machine head assembly and the stability of the grinding machine head during operation are improved, and the resonance of equipment is avoided; thereby achieving the purpose of well meeting the requirement of workpiece processing precision.

Preferably, the stand top is equipped with the top horizontal installation platform that supplies the vice installation of guide rail, be equipped with the below horizontal installation platform that is located the oblique place ahead in top horizontal installation platform on the stand, two the X is to the vice flatly of guide rail on top horizontal installation platform and below horizontal installation platform respectively. Under the structural design, the upright column forms reliable and stable support for the saddle, so that the bearing rigidity and the running stability of the saddle are improved.

Preferably, revolving stage elevating gear includes lift slip table, Z to vice and the lift driver of track, and Z is to vice the installing on the stand of track, and the lift slip table cooperates on the stand through Z to vice lift sliding of track, and revolving stage normal running fit is equipped with between lift slip table bottom and the fuselage and supports the balance cylinder on the fuselage with the lift slip table. Under this structural design, the support to lift slip table is realized to the balancing cylinder to reduce Z to the vice atress of track and play buffering cushioning effect, make the operation of lift slip table more reliable and stable.

Preferably, the cylinder body of the balance cylinder is hinged on the machine body, the cylinder arm of the balance cylinder is hinged at the bottom of the lifting sliding table, the balance cylinder is arranged at the position of the central axis of the lifting sliding table, the hinge direction of the cylinder body of the balance cylinder or the hinge direction of the cylinder arm of the balance cylinder is vertical to the Z-direction rail pair, and the hinge direction of the cylinder body is vertical to the hinge direction of the cylinder arm. This structural design, the automatic aligning of balancing cylinder guarantees to be parallel to the track pair with Z to improve the stability of lift slip table operation.

Preferably, the emery wheel of tooth's socket grinding wheel assembly corresponds the cooperation and has tooth's socket grinding wheel finishing device, and tooth's socket grinding wheel grinding face finishing device includes mounting bracket and tooth's socket grinding wheel finishing head, and on the mounting bracket was fixed in stand or revolving stage elevating gear, normal running fit had the swivel mount on the mounting bracket, and the swivel mount level crouches and sets up on the mounting bracket, and the swivel mount cooperation has drive swivel mount pivoted to maintain driving motor, and tooth's socket grinding wheel finishing head is installed on the swivel mount. Under this structural design, guarantee the abrasive machining precision of the emery wheel of tooth's socket grinding emery wheel assembly.

Preferably, the tooth's socket grinding emery wheel is repaiied the head and is set up on the roating seat along horizontal position is adjustable, is equipped with X to position adjustment subassembly on the roating seat, and X is including installation bedplate, adjusting screw and adjusting nut to position adjustment subassembly, and tooth's socket grinding emery wheel is repaiied first fixed mounting on the installation bedplate, but the installation bedplate is along horizontal sharp sliding fit on the roating seat, and adjusting nut is fixed in installation bedplate bottom, adjusting screw and adjusting screw thread fit, and adjusting screw location rotating fit is on the roating seat. Under this structural design, realize the horizontal lateral position of tooth's socket grinding wheel dresser head and adjust to improve tooth's socket grinding wheel dresser head dressing accuracy, realize arbitrary circular arc diameter grinding.

Preferably, the turntable lifting device is provided with an inner and outer circular end face grinding wheel dressing device which can lift along with the turntable, the inner and outer circular end face grinding wheel dressing device comprises a fixing frame and an inner and outer circular end face grinding wheel dressing head, the fixing frame is installed on the turntable lifting device, the inner and outer circular end face grinding wheel dressing head is installed on the fixing frame, the inner and outer circular end face grinding wheel dressing head comprises a first diamond pen and a second diamond pen which face the inner and outer circular end face grinding wheel of the inner and outer circular end face grinding wheel dressing device, the orientation of the first diamond pen is in an oblique upward direction, and the orientation of the second diamond pen is in an oblique downward direction. Under the structural design, the grinding wheel dressing of the grinding wheel assembly with the inner and outer circular end faces is realized, the double-diamond pen design realizes the dressing of multiple faces of the grinding wheel assembly with the inner and outer circular end faces, and the dressing reliability is improved.

Preferably, the tooth groove grinding wheel assembly and the inner and outer circular end face grinding wheel assemblies are mounted on the same saddle. Under this structural design, the structure is simplified, guarantees the position degree of the tooth form groove, both ends bearing position and the needle tooth shell installation position of the needle tooth shell that processing was accomplished.

The present invention will be further described with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a high-precision vertical pin gear shell composite grinding machine according to an embodiment of the present invention.

Detailed Description

Referring to fig. 1, the present invention should be pointed out that, in order to better understand the orientation pointed out in the creation of the present invention, corresponding direction indications are made in the drawings; if "transverse direction", "horizontal direction", "X direction" are X axis direction shown in the drawing, "lifting" direction "," Z direction "is Z axis direction shown in the drawing," top "is Z1 direction of Z axis of the component," down "is Z2 direction of Z axis of the component," front and back direction "," Y direction "is Y axis direction shown in the drawing, and" front "is Y1 direction of Y axis direction.

The utility model discloses a vertical needle tooth shell compound grinding machine of high accuracy, including fuselage 1, be equipped with stand 2 and the revolving stage 3 that is used for fixed work piece (needle tooth shell) on the fuselage 1, revolving stage 3 is through the motor drive of high accuracy, be equipped with grinding aircraft nose assembly on stand 2, grinding aircraft nose assembly includes along the tooth's socket grinding wheel assembly 4 and interior excircle end face grinding wheel assembly 5 of transversely arranging, tooth's socket grinding wheel assembly 4 is used for the tooth's socket grinding of needle tooth shell, interior, excircle end face grinding wheel assembly 5 is used for the interior, the excircle end face grinding of needle tooth shell, it all can adopt the design of prior art, interior excircle end face grinding wheel assembly 5 includes interior excircle end face grinding wheel 51, interior excircle end face grinding wheel drive shaft 52 and interior excircle end face grinding wheel drive motor 53 usually, interior excircle end face grinding wheel 51 is installed on interior excircle end face grinding wheel drive shaft 52 and is rotated through interior excircle end face grinding wheel drive motor 53 drive, the inner and outer circular end face grinding wheel driving shaft 52 is driven by an inner and outer circular end face grinding wheel driving motor 53, the tooth groove grinding wheel assembly 4 comprises a tooth groove grinding wheel mounting main shaft 41, a tooth groove grinding wheel 42 and a tooth groove grinding wheel driving mechanism for driving the tooth groove grinding wheel 42, the tooth groove grinding wheel is rotationally matched with the tooth groove grinding wheel mounting main shaft 41 and is driven by the tooth groove grinding wheel driving mechanism, and the tooth groove grinding wheel driving mechanism can be generally realized by matching a motor with a synchronous belt 43; in order to improve the rigidity and the operation stability of equipment, the invention adopts the following improved design: the grinding machine is characterized in that a rotary table lifting device 6 used for driving the rotary table 3 to lift is arranged on the machine body 1, the rotary table 3 can be arranged on the machine body 1 in a lifting mode through the rotary table lifting device 6, the upright post 2 is provided with an X-direction sliding device used for driving the grinding machine head assembly to move transversely in a reciprocating mode, the X-direction sliding device comprises at least two X-direction guide rail pairs 7, a saddle 2-1 supported on the X-direction guide rail pairs 7 and an X-direction driving mechanism 2-2 used for driving the saddle 2-1 to slide transversely, one X-direction guide rail pair 7-1 is arranged at the top end of the upright post 2, the other X-direction guide rail pair 7-2 is arranged on the upright post 2 and located in the oblique lower front of the X-direction guide rail pair 7-1 at the top end, and the tooth groove grinding wheel. The tooth socket grinding wheel assembly 4 and the inner and outer circular end face grinding wheel assemblies 5 are arranged on the same saddle 2-1, so that the structure is simplified, the position accuracy of the tooth-shaped groove, the bearing positions at two ends and the needle gear shell mounting position of the finished needle gear shell is ensured, and the high-precision machining requirement of the needle gear shell is met; certainly, the tooth groove grinding wheel assembly and the inner and outer circular end face grinding wheel assembly can be independently provided with saddles, but the number of the saddles is increased, so that the structure is complicated. The X-direction driving mechanism is conventional technology, such as a motor matched with a lead screw and nut mechanism.

An upper horizontal installation platform 21 for installing the guide rail pair is arranged at the top end of the upright post 2, and the corresponding X-direction guide rail pair 7-1 positioned at the top end of the upright post 2 is tiled and installed on the upper horizontal installation platform 21; the upright post 2 is provided with a lower horizontal installation platform 22 which is positioned at the lower oblique front of the upper horizontal installation platform 21, and the other X-direction guide rail pair 7-2 is paved on the lower horizontal installation platform 22. The X-direction guide rail pair is tiled and installed, so that the upright post can form a good supporting effect on the saddle, and the supporting rigidity and the running stability of the saddle are improved. Of course, the upright post can also be provided with an installation inclined plane, and the X-direction guide rail pair is arranged on the installation inclined plane in parallel; or an upper horizontal mounting platform is arranged at the top end of the upright column, one X-direction guide rail pair is laid on the upper horizontal mounting platform, the other X-direction guide rail pair is arranged on the front side surface of the upright column, so that the upright column support at the rear end of the saddle is realized, and the front end of the saddle is hung on the upright column through the X-direction guide rail pair; however, the structural design of the present embodiment is preferably adopted because the support rigidity of the saddle can be improved. The top of the upright post 2 is provided with an inclined plane 23, the inclined plane 23 adopts a design of 30-60 degrees (shown as an angle theta in the figure), the upper horizontal mounting platform 21 is arranged at the upper part of the inclined plane at the top of the upright post 2, and the lower horizontal mounting platform 22 is arranged at the lower part of the inclined plane at the top of the upright post 2, so that a good saddle supporting effect is achieved; in addition, under the inclined plane design, the spatial abdication is realized, the structural strength of the saddle can be improved, and the supporting effect is ensured; the X-direction driving mechanism is arranged on the inclined plane, and the inclined plane is designed to facilitate the installation and the arrangement of the X-direction driving mechanism.

The rotary table lifting device 6 comprises a lifting sliding table 61, a Z-direction track pair 62 and a lifting driver 63, the lifting driver 63 is preferably realized by matching a motor with a screw nut mechanism, the Z-direction track pair 62 is installed on the upright post 1, the lifting sliding table 62 is matched on the upright post 1 in a lifting sliding way through the Z-direction track pair 62, the rotary table 3 is matched on the lifting sliding table 61 in a rotating way, and a balance cylinder 6-1 for supporting the lifting sliding table 6 on the body 1 is arranged between the bottom of the lifting sliding table 6 and the body 1. The balance cylinder realizes the support to the lift slip table to reduce Z to the vice atress of track and play buffering cushioning effect, make the operation of lift slip table more reliable and stable.

Further, the cylinder body 6-11 of the balance cylinder 6-1 is hinged to the machine body 1 (the cylinder body hinged end 6-111 is shown in the figure), the balance cylinder 6-1 corresponds to the central axis position of the lifting sliding table, the cylinder arm 6-12 of the balance cylinder 6-1 is hinged to the bottom of the lifting sliding table 61 (the cylinder arm hinged end 6-121 is shown in the figure), the cylinder body hinged direction of the balance cylinder 6-1 is perpendicular to the Z-direction rail pair 62, the cylinder arm hinged direction of the balance cylinder can also be towards the Z-direction rail pair mounting position, and the hinged direction of the cylinder body 6-11 is perpendicular to the hinged direction of the cylinder arm 6-12. The balance cylinder under this design can automatic aligning, guarantees to be parallel to the track pair with Z to improve the stability of lift slip table operation.

Usually, the inner and outer circular end face grinding wheels and the tooth socket grinding wheel are both provided with corresponding trimming devices to ensure the processing precision of the pin gear shell. In this embodiment, the upright 2 is provided with a tooth space grinding wheel grinding surface dressing device 8 correspondingly matched with the grinding wheel of the tooth space grinding wheel assembly 4, of course, the tooth space grinding wheel dressing device 8 may also be arranged on the rotary table lifting device 6, the tooth space grinding wheel grinding surface dressing device 8 includes a mounting frame 81 and a tooth space grinding wheel dressing head 82, the mounting frame 81 is fixed on the upright 2 (or the mounting frame 81 is fixed on the lifting sliding table 61 of the rotary table lifting device 6), a swivel 83 is rotatably matched on the mounting frame 81, the swivel 83 is horizontally and horizontally arranged on the mounting frame 81 (it should be pointed out here that the swivel 83 is horizontally and horizontally arranged on the plane where the X direction and the Y direction are located), the swivel 83 is matched with a dressing driving motor 84 for driving the swivel 83 to rotate, and the tooth space grinding wheel dressing head 82 is installed on the swivel 83.

Further, the tooth space grinding wheel truing head 82 is adjustable along horizontal transverse position and is set up on roating seat 83, be equipped with X to position adjustment subassembly on the roating seat 83, X is including installation bedplate 881, adjusting screw 882 and adjusting nut (not shown in the figure), tooth space grinding wheel truing head 82 fixed mounting is on installation bedplate 881, but installation bedplate 881 is along horizontal sharp sliding fit on roating seat 83, adjusting nut is fixed in installation bedplate 881 bottom, adjusting screw and adjusting screw 882 screw thread fit, adjusting screw 882 fixed position normal running fit is on roating seat 83. The horizontal and transverse position adjustment of the tooth space grinding wheel dressing head is realized, so that the dressing precision of the tooth space grinding wheel dressing head is improved, the high-precision grinding of arcs with any diameters is realized, and the adjusting screw rod can be manually operated and also can be provided with a motor to realize automation.

The inner and outer circle end face grinding wheel dressing device comprises a fixing frame and an inner and outer circle end face grinding wheel dressing head, wherein the fixing frame is arranged on the rotary table lifting device, and the inner and outer circle end face grinding wheel dressing head is arranged on the fixing frame. The inner and outer circular end face grinding wheel dressing device 9 is arranged on the rotary table lifting device 6 and lifted along with the rotary table 3, the inner and outer circular end face grinding wheel dressing device 9 is installed on the lifting sliding table 61, the inner and outer circular end face grinding wheel dressing device 9 comprises a fixing frame 91 and an inner and outer circular end face grinding wheel dressing head 92, the fixing frame 91 is fixed on the lifting sliding table 61 of the rotary table lifting device 6, the inner and outer circular end face grinding wheel dressing head 92 is installed on the fixing frame 91, the inner and outer circular end face grinding wheel dressing head 92 comprises a first diamond pen 92-1 and a second diamond pen 92-2, the inner and outer circular end face grinding wheel 51 faces the inner and outer circular end face grinding wheel dressing device, the first diamond pen faces obliquely upwards, and the second diamond pen faces obliquely downwards.

The utility model discloses a vertical pin gear shell compound grinding machine of high accuracy has following technological effect:

the Z-direction motion is arranged on the rotary table, the X-direction tooth socket grinding wheel assembly and the inner and outer circular end face grinding wheel assemblies are transversely arranged on the grinding machine head assembly in a sliding manner, and the movable mechanisms matched with the grinding machine head assembly on the upright column are reduced, so that the total mass is reduced, the rigidity of the grinding machine head supported on the upright column is increased, the inertia of equipment in operation is reduced, and the equipment is more stable and reliable in operation; in addition, the turntable is adopted to lift, the grinding machine head assembly is in transverse sliding operation, the grinding machine head assembly can be supported by the saddle matched with the X-direction guide rail pair at the top end of the upright post and the other guide rail pair which is positioned at the inclined lower front of the X-direction guide rail pair at the top end, the rigidity of the saddle supported on the upright post is greatly improved, namely the rigidity of the movable support of the grinding machine head on the upright post is improved, the station switching stability of the transverse sliding of the grinding machine head assembly and the stability of the grinding machine head during operation are improved, and the equipment resonance is avoided; thereby achieving the purpose of well meeting the requirement of workpiece processing precision; and Z upwards moves and arranges on the revolving stage, and the tooth's socket grinding wheel assembly and interior outer circular face grinding wheel assembly station switch arrangement on grinding aircraft nose assembly upwards of X, has better spatial layout, and the revolving stage corresponds with grinding aircraft nose assembly formation better spatial position, compact structure.

Claims

1. The utility model provides a vertical pin-tooth shell compound grinding machine of high accuracy, is equipped with the stand and is used for the revolving stage of fixed work piece on the fuselage including the fuselage, be equipped with grinding machine head assembly on the stand, grinding machine head assembly includes along the tooth's socket grinding wheel assembly and interior excircle end face grinding wheel assembly of transversely arranging, its characterized in that: the fuselage on be equipped with the revolving stage elevating gear who is used for driving the revolving stage to go up and down, the revolving stage sets up on the fuselage through revolving stage elevating gear liftable, be equipped with the X of drive grinding aircraft nose assembly along horizontal reciprocating motion to the displacement device, X is to the displacement device including two piece at least X to the guide rail vice, support saddle and drive saddle along the X of horizontal slip to actuating mechanism on the X is to the guide rail vice, wherein one X is to the guide rail vice locate the stand top, another X is to the guide rail vice locate on the stand and be located the oblique place ahead of top position X to the guide rail vice, grinding tooth's socket emery wheel assembly and interior excircle terminal surface grinding emery wheel assembly install on the saddle.

2. The high-precision vertical pin gear shell compound grinding machine as claimed in claim 1, characterized in that: the stand top is equipped with the top horizontal installation platform that supplies the vice installation of guide rail, be equipped with the below horizontal installation platform that is located the oblique place ahead in top horizontal installation platform on the stand, two the X is to the vice difference of guide rail tiling on top horizontal installation platform and below horizontal installation platform.

3. The high-precision vertical pin gear shell compound grinding machine as claimed in claim 1, characterized in that: the rotary table lifting device comprises a lifting sliding table, a Z-direction track pair and a lifting driver, wherein the Z-direction track pair is arranged on the stand column, the lifting sliding table is matched with the stand column in a lifting and sliding manner through the Z-direction track pair, the rotary table is matched with the lifting sliding table in a rotating manner on the lifting sliding table, and a balance cylinder for supporting the lifting sliding table on the machine body is arranged between the bottom of the lifting sliding table and the machine body.

4. The high-precision vertical pin gear shell compound grinding machine as claimed in claim 3, characterized in that: the cylinder body of the balance cylinder is hinged to the machine body, the cylinder arm of the balance cylinder is hinged to the bottom of the lifting sliding table, the balance cylinder is arranged at the position of the central axis of the lifting sliding table, the hinge direction of the cylinder body of the balance cylinder or the hinge direction of the cylinder arm of the balance cylinder is perpendicular to the Z-direction rail pair, and the hinge direction of the cylinder body is perpendicular to the hinge direction of the cylinder arm.

5. The high-precision vertical pin gear shell compound grinding machine as claimed in claim 1, characterized in that: the grinding wheel of tooth's socket grinding wheel assembly corresponds the cooperation and has tooth's socket grinding wheel dressing device, and tooth's socket grinding wheel grinding face dressing device includes mounting bracket and tooth's socket grinding wheel dressing head, and the mounting bracket is fixed in on stand or revolving stage elevating gear, and normal running fit has the swivel seat on the mounting bracket, and the swivel seat level is crouched horizontally and is set up on the mounting bracket, and the swivel seat cooperation has drive swivel seat pivoted to maintain driving motor, and tooth's socket grinding wheel dressing head is installed on the swivel seat.

6. The high-precision vertical pin gear shell compound grinding machine according to claim 5, characterized in that: the tooth's socket grinding emery wheel is repaiied first and is set up on the roating seat along horizontal position is adjustable, is equipped with X to position adjustment subassembly on the roating seat, and X is including installation bedplate, adjusting screw and adjusting nut to position adjustment subassembly, and tooth's socket grinding emery wheel is repaiied first fixed mounting on the installation bedplate, but installation bedplate is along horizontal sharp sliding fit on the roating seat, and adjusting nut is fixed in installation bedplate bottom, adjusting screw and adjusting screw thread fit, and adjusting screw location rotating fit is on the roating seat.

7. The high-precision vertical pin gear shell compound grinding machine as claimed in claim 1, characterized in that: the inner and outer circle end face grinding wheel dressing device is arranged on the rotary table lifting device and can lift along with the rotary table, the inner and outer circle end face grinding wheel dressing device comprises a fixing frame and an inner and outer circle end face grinding wheel dressing head, the fixing frame is installed on the rotary table lifting device, the inner and outer circle end face grinding wheel dressing head is installed on the fixing frame, the inner and outer circle end face grinding wheel dressing head comprises a first diamond pen and a second diamond pen, the first diamond pen faces upwards in an inclined mode, and the second diamond pen faces downwards in an inclined mode.

8. The high-precision vertical pin gear shell compound grinding machine as claimed in claim 1, characterized in that: the tooth groove grinding wheel assembly and the inner and outer circle end face grinding wheel assemblies are arranged on the same saddle.