CN111958058B

CN111958058B - Multi-station numerical control gear grinding machine

Info

Publication number: CN111958058B
Application number: CN202010754229.XA
Authority: CN
Inventors: 李建军; 杨超; 李欢; 周庆华; 张春晖
Original assignee: Hunan Zdcy Cnc Equipment Co ltd
Current assignee: Hunan Zdcy Cnc Equipment Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2023-04-25
Anticipated expiration: 2040-07-29
Also published as: CN111958058A

Abstract

The invention discloses a multi-station numerical control gear grinding machine which comprises a machine body, a sliding table and at least two workpiece spindle C shafts, wherein the sliding table is movably arranged on the machine body along a horizontal axial X shaft, a first upright post is movably arranged on the sliding table along a horizontal axial Y shaft, one side of the first upright post downwards extends to the bottom end of the sliding table and is movably provided with a rotary shaft box along a vertical axial Z shaft, a rotary shaft A shaft parallel to the X shaft direction is arranged in the rotary shaft box, a grinding wheel box is arranged on the rotary shaft A shaft, a grinding wheel spindle B shaft perpendicular to the rotary shaft A shaft is arranged in the grinding wheel box, a grinding wheel is arranged on the grinding wheel spindle B shaft, the workpiece spindle C shafts are sequentially arranged on the machine body along the direction parallel to the Y shaft and are vertically arranged, and workpieces are arranged on the workpiece spindle C shaft. The multi-station numerical control gear grinding machine has the advantages that the weight borne by the rotary shaft A is small, the rigidity and strength required by the rotary shaft A are lower, the stability of the whole machine of the gear grinding machine is good, the transmission error is small, and in addition, the cost of the whole machine is lower.

Description

Multi-station numerical control gear grinding machine

Technical Field

The invention relates to a gear processing machine tool, in particular to a multi-station numerical control gear grinding machine.

Background

The numerical control gear grinding machine is used for grinding cylindrical straight and helical gears at high speed and accurately, and aims to trim deformation of gears after heat treatment, improve tooth surface precision and finish, and meet requirements of stable transmission, noise reduction and precision improvement.

The existing numerical control gear grinding machine tool is provided with a machine body 1, wherein a support column 2 is arranged on the machine body 1 along a horizontal axial X axis in a moving manner, an A shaft box 3 is arranged on the support column 2 along a vertical axial Z axis in a moving manner, an A shaft parallel to the X axis direction is arranged on the A shaft box 3 in a rotating manner, a rotary platform 4 is fixedly arranged on the A shaft, a B shaft box 5 is arranged on the rotary platform 4 along a horizontal axial Y axis in a moving manner, a B shaft parallel to the Y axis direction is arranged in the B shaft box 5 in a rotating manner, and a grinding wheel for machining a workpiece is arranged at one end of the B shaft. The machine body 1 is vertically and rotationally provided with a rotating upright post 6, the rotating upright post 6 is positioned on one side of the supporting upright post 2 corresponding to the grinding wheel, the rotating upright post 6 is vertically and rotationally provided with a C shaft 7, and the upper end of the C shaft 7 is used for installing a workpiece.

The numerical control gear grinding machine tool with the structure can realize the processing of gears, but has the following defects: firstly, the rotary platform 4, the B axle box 5, the B axle and the grinding wheel are all borne on the A axle, so that the bearing load capacity of the A axle is large, the power required for driving the A axle to rotate is more, the rigidity and strength required by the A axle are larger, meanwhile, the bearing load capacity of the A axle is large, the stability is poor, and the transmission error is larger. Secondly, the A axle box 3, the A axle, the rotary platform 4, the B axle box 5, the B axle and the grinding wheel are all positioned on the same side of the support upright post 2, so that the bearing weight of the side corresponding to the support upright post 2 is large, the weight of other positions is small, and further the stability of the whole machine of the gear grinding machine is poor and the transmission error is large. In addition, the driving mechanism is required to be arranged to control the rotation of the rotation upright post 6, the rotation upright post 6 drives the C shaft 7 to move, the machining efficiency is low, the machining precision is low, and the cost is high.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the multi-station numerical control gear grinding machine provided by the invention has the advantages that the weight borne by the rotary shaft A is small, the required rigidity and strength of the rotary shaft A are lower, the stability of the whole machine of the gear grinding machine is good, the transmission error is small, in addition, the machining efficiency of the whole machine is high, the machining precision is high, and the cost is lower.

According to an embodiment of the invention, a multi-station numerical control gear grinding machine comprises:

a bed body;

the sliding table is movably arranged on the lathe bed along a horizontal axial X axis, a first upright post is movably arranged on the sliding table along a horizontal axial Y axis, one side of the first upright post in the moving direction of the first upright post downwards extends to the bottom end of the sliding table and is movably provided with a rotary axle box along a vertical axial Z axis, a rotary axle A axis parallel to the X axis direction is arranged in the rotary axle box, the end part of the rotary axle A axis is provided with a grinding wheel box body, a grinding wheel spindle B axis perpendicular to the rotary axle A axis is arranged in the grinding wheel box body, and a grinding wheel is arranged at the end part of the grinding wheel spindle B axis;

at least two work piece main shaft C axles, along being parallel to the direction of Y axle set gradually on the lathe bed, and be located first stand corresponds the one side of emery wheel, work piece main shaft C axle is vertical to be set up, the upper end of work piece main shaft C axle is used for installing the work piece.

The multi-station numerical control gear grinding machine provided by the embodiment of the invention has at least the following technical effects: compared with the existing numerical control gear grinding machine tool, the multi-station numerical control gear grinding machine provided by the embodiment of the invention has the advantages that firstly, the structure is simpler, the number of parts is fewer, the manufacturing and assembling difficulties are lower, the processing is more accurate, the processing precision is higher, the faults are less likely to occur, the maintenance difficulty is lower after the faults occur, and the structure is more compact and the occupied area is smaller due to fewer parts. Then, compared with the existing numerical control gear grinding machine tool, the multi-station numerical control gear grinding machine provided by the embodiment of the invention transfers relevant parts required by movement along the Y-axis direction to the sliding table instead of being arranged on the rotary shaft A, so that the weight required by driving the rotary shaft A to rotate is smaller, the power required by driving the rotary shaft A to rotate is less, the rigidity and strength requirements of the rotary shaft A are lower, the required size of the rotary shaft A is smaller, the bearing load capacity of the rotary shaft A is small, the stability is good, the transmission error is small, the rotation center of the grinding wheel is closer to the rotary shaft A, and the transmission is more stable. Secondly, the embodiment of the invention reduces the parts and the weight of the first upright post close to one side of the rotary axle box body, so that the stability of the first upright post is better, and the overall stability of the gear grinding machine tool is better, and the transmission error is smaller. In addition, one side that first stand is close to the gyration axle box downwardly extending to the bottom of slip table, and then the gyration axle box can remove to the bottom of slip table that is close to the position of lathe bed, and the scope of gyration axle box removal is bigger, and is more convenient when processing the gear, and the slip table is located the installation space that first stand bottom formed, not only can prevent that the slip table from directly exposing outside and accumulating the dust or suffering the damage, can reduce the focus of first stand moreover, makes complete machine structure compacter, stability is better. Finally, in the embodiment of the invention, at least two workpiece spindle C shafts are arranged on the lathe bed, when the grinding wheel processes the gear on one of the workpiece spindle C shafts, the gear to be processed can be arranged on the other workpiece spindle C shafts, and then the first upright post can drive the grinding wheel to sequentially approach the at least two workpiece spindle C shafts when moving along the horizontal axial Y shaft, and then the grinding wheel can sequentially and repeatedly process the gear on the at least two workpiece spindle C shafts.

According to some embodiments of the invention, the multi-station numerically controlled gear grinding machine further comprises a wheel dresser for dressing the grinding wheel.

According to some embodiments of the invention, the wheel dresser is disposed on the bed below the wheel housing or on the first upright above the wheel housing.

According to some embodiments of the invention, a swinging shaft is vertically and rotatably arranged on the lathe bed or the first upright, and the grinding wheel dresser is arranged on the swinging shaft.

According to some embodiments of the invention, a second upright post is arranged on the lathe bed corresponding to each workpiece spindle C shaft, and a jacking part is arranged on the second upright post in a lifting manner and is positioned above the corresponding workpiece spindle C shaft.

According to some embodiments of the invention, an X-axis guide rail is arranged on the lathe bed, the sliding table is slidably arranged on the X-axis guide rail, a Y-axis guide rail is arranged on the sliding table, the first upright is slidably arranged on the Y-axis guide rail, a Z-axis guide rail is arranged on the first upright, and the rotary axle box is slidably arranged on the Z-axis guide rail.

According to some embodiments of the invention, the multi-station numerical control gear grinding machine further comprises:

the first driving mechanism is arranged on the lathe bed and is in transmission connection with the sliding table, so as to control the sliding table to slide along the X-axis guide rail;

the second driving mechanism is arranged on the sliding table and is in transmission connection with the first upright post so as to control the first upright post to slide along the Y-axis guide rail;

and the third driving mechanism is arranged on the first upright post and is in transmission connection with the rotary axle box body, so as to control the rotary axle box body to slide along the Z-axis guide rail.

According to some embodiments of the invention, the first, second and third drive mechanisms are motor screw mechanisms or linear motors or cylinders.

According to some embodiments of the invention, a built-in motor is arranged below the workpiece spindle C-axis in the lathe bed, and an output shaft of the built-in motor is connected with the workpiece spindle C-axis.

According to some embodiments of the invention, an internal motor is arranged in the rotary shaft box, and an output shaft of the internal motor is connected with the rotary shaft A.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of the overall structure of a conventional gear grinding machine;

FIG. 2 is one of the perspective views of a prior art gear grinding machine;

FIG. 3 is a schematic diagram of the overall structure of the present invention;

FIG. 4 is a first view of the present invention;

FIG. 5 is a second view of the present invention;

FIG. 6 is a third view of the present invention;

reference numerals:

the device comprises a machine body 1, a supporting upright post 2, an A axle box body 3, a rotary platform 4, a B axle box body 5, a rotating upright post 6 and a C axle 7; a bed 100; a slide table 200; first column 300, mounting cavity 301; swivel axle housing 400; a pulley case 500; a workpiece spindle C-axis 600; grinding wheel dresser 700; a second upright 800, and a top 801.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

A multi-station numerical control gear grinding machine according to an embodiment of the present invention is described below with reference to fig. 3 to 6.

According to the multi-station numerical control gear grinding machine provided by the embodiment of the invention, as shown in fig. 3 to 6, the multi-station numerical control gear grinding machine comprises a machine body 100, a sliding table 200 and at least two workpiece spindle C shafts 600, wherein the sliding table 200 is movably arranged on the machine body 100 along a horizontal axial X shaft, a first upright post 300 is movably arranged on the sliding table 200 along a horizontal axial Y shaft, one side of the first upright post 300 in a moving direction of the first upright post extends downwards to the bottom end of the sliding table 200 and is movably arranged along a vertical axial Z shaft, a rotary spindle A shaft parallel to the X shaft direction is arranged in the rotary spindle box 400, a grinding wheel box 500 is arranged at the end part of the rotary spindle A shaft, a grinding wheel spindle B shaft perpendicular to the rotary spindle A shaft is arranged in the grinding wheel box 500, grinding wheels are arranged at the end part of the grinding wheel spindle B shaft, at least two workpiece spindle C shafts 600 are sequentially arranged on the machine body 100 along the direction parallel to the Y shaft, the first upright post 300 corresponds to one side of a grinding wheel, the workpiece spindle C shaft 600 is vertically arranged, and the upper end of the workpiece spindle C shaft 600 is used for installing workpieces.

In this embodiment, the processing of the gear depends on the relative positions of the grinding wheel and the workpiece, and the relative positions of the grinding wheel and the workpiece can be determined by the relative positions of the machine body 100 and the slide table 200, the relative positions of the slide table 200 and the first upright 300, the relative positions of the first upright 300 and the rotary shaft box 400, and the rotation angles of the rotary shaft a, the grinding wheel spindle B, and the workpiece spindle C600, that is, when the gear needs to be processed, the slide table 200, the first upright 300, and the rotary shaft box 400 are moved, and the rotary shaft a, the grinding wheel spindle B, and the workpiece spindle C600 are rotated, so that the processing position, the feeding amount, and the processing angle of the gear during processing can be adjusted, thereby processing the desired gear. Compared with the existing numerical control gear grinding machine tool, the multi-station numerical control gear grinding machine provided by the embodiment of the invention has the advantages that firstly, the structure is simpler, the number of parts is fewer, the manufacturing and assembling difficulties are lower, the processing is more accurate, the processing precision is higher, the faults are less likely to occur, the maintenance difficulty is lower after the faults occur, and the structure is more compact and the occupied area is smaller due to fewer parts. Then, compared with the existing numerical control gear grinding machine tool, the multi-station numerical control gear grinding machine provided by the embodiment of the invention transfers relevant parts required by movement along the Y-axis direction to the sliding table 200 instead of being arranged on the rotary shaft A, so that the weight required by driving the rotary shaft A to rotate is smaller, the power required by driving the rotary shaft A to rotate is less, the rigidity and strength requirements of the rotary shaft A are lower, the required size of the rotary shaft A is smaller, the bearing load capacity of the rotary shaft A is small, the stability is good, the transmission error is small, the rotation center of the grinding wheel is closer to the rotary shaft A, and the transmission is more stable. Secondly, the embodiment of the invention reduces the parts and the weight of the first upright post 300 close to one side of the rotary axle box 400, so that the stability of the first upright post 300 is better, and further, the overall stability of the gear grinding machine is better, and the transmission error is smaller. In addition, one side of the first upright post 300, which is close to the rotary shaft box 400, downwards extends to the bottom end of the sliding table 200, and then the rotary shaft box 400 can move to the bottom end of the sliding table 200, namely, the position close to the lathe bed 100, and the moving range of the rotary shaft box 400 is larger, so that the gear is more convenient to process, the workpiece spindle C shaft 600 does not need to be higher than the lathe bed 100 by too much distance, and the structural strength of the workpiece spindle C shaft 600 is higher, the shaking is less, and the transmission error is smaller. The bottom of first stand 300 encloses with the extension that extends to slip table 200 bottom and closes and form a installation cavity 301, and slip table 200 is located installation cavity 301, and the top of slip table 200 can be provided with the guide rail, and the top of installation cavity 301 also is the bottom of first stand 300 can be provided with the spout correspondingly, and first stand 300 passes through the cooperation slidable mounting of guide rail and spout on slip table 200. The sliding table 200 is located in the installation cavity 301, so that dust accumulation or damage caused by direct exposure of the sliding table 200 can be prevented, the gravity center of the first upright post 300 can be lowered, the whole machine structure is more compact, and the stability is better. Finally, in the embodiment of the present invention, at least two workpiece spindle C-shafts 600 are sequentially arranged on the machine body 100 along the Y-axis direction, when the grinding wheel processes the gear on one of the workpiece spindle C-shafts 600, the gear to be processed can be mounted on the other workpiece spindle C-shaft 600, and then the first upright 300 can drive the grinding wheel to sequentially approach the at least two workpiece spindle C-shafts 600 when moving along the horizontal axis Y-axis, and then the grinding wheel can sequentially and repeatedly process the gear on the at least two workpiece spindle C-shafts 600, so that the operation is simple, time and labor are saved, the processing efficiency is high, the workpiece spindle C-shaft 600 is directly arranged on the machine body 100, and other driving mechanisms are not required to control the movement, further the overall cost is lower, the gear does not need to move, only rotation is required, the transmission links are reduced, and the processing precision is higher.

It should be noted that, in this embodiment, the X axis, the Y axis and the Z axis are three axes of a space cartesian rectangular coordinate system, where the X axis and the Y axis are disposed vertically to each other along a horizontal direction, and the Z axis is disposed along a vertical direction. It should be understood that, in the present embodiment, the rotating shaft box 400 is provided with a rotating shaft a parallel to the X-axis direction, and in the gear processing machine field, it is obvious that the rotating shaft a can rotate around its own axis, and the rotating shaft a is parallel to the X-axis direction, which means that the axial direction of the rotating shaft a is parallel to the X-axis direction. By such pushing, the grinding wheel spindle B shaft is also rotatably arranged in the grinding wheel box 500 around the axis of the grinding wheel spindle B shaft, and the axial direction of the grinding wheel spindle B shaft is perpendicular to the axial direction of the rotary shaft A shaft. The workpiece spindle C-axis 600 is vertically disposed, that is, the axial direction of the workpiece spindle C-axis 600 is a vertical direction, and the workpiece spindle C-axis 600 rotates around the axis of the vertical direction. In addition, the workpiece spindle C-axis 600 is located on the side of the first stand 300 corresponding to the grinding wheel, that is, the workpiece spindle C-axis 600 and the grinding wheel are both located on the same side of the first stand 300. In addition, the end portion of the rotary shaft a shaft, on which the grinding wheel box 500 is arranged, needs to extend out of the rotary shaft box 400 so that the grinding wheel box 500 rotates along with the rotary shaft a shaft, and the end portion of the grinding wheel spindle B shaft, on which the grinding wheel is arranged, needs to extend out of the grinding wheel box 500 so that the grinding wheel can process a workpiece, and meanwhile, the grinding wheel can be replaced and maintained conveniently. Furthermore, it is contemplated that the workpiece spindle C-axis 600 may be sleeved with a C-axis housing to protect the workpiece spindle C-axis 600, and of course, the upper end of the workpiece spindle C-axis 600 may also need to extend beyond the C-axis housing to facilitate installation and replacement of workpieces. The number of workpiece spindle C-axes 600 may be two, three, or more than three. Taking the case that the workpiece spindle C-axis 600 is two as an example, the process of machining the gear by the multi-station numerical control gear grinding machine of the present embodiment is briefly described below: after the gear to be machined is assembled on the two workpiece spindle C shafts 600, the control sliding table 200 is moved to a proper position along the horizontal axial X shaft, the first upright post 300 is controlled to be moved to a proper position along the horizontal axial Y shaft, the rotary shaft box 400 is controlled to be moved to a proper position along the vertical axial Z shaft, so that the grinding wheel is contacted with one of the gears, the grinding wheel spindle B shaft is rotated, the grinding wheel spindle B shaft can drive the grinding wheel to grind the gear, and in the machining process, the machining angle of the grinding wheel can be adjusted by properly rotating the rotary shaft A shaft according to the requirement, and the machining position of the gear can be adjusted by properly rotating the workpiece spindle C shaft 600. After the first gear is machined, a second gear is machined, the first gear is removed while the second gear is machined, a new gear to be machined is installed on the workpiece spindle C shaft 600 corresponding to the first gear, and then the grinding wheel can sequentially and repeatedly machine the gears on the two workpiece spindle C shafts 600.

In some embodiments of the present invention, as shown in fig. 4 and 5, the multi-station numerical control gear grinding machine further includes a wheel dresser 700, the wheel dresser 700 being configured to dress a grinding wheel. The grinding wheel needs to be dressed after being used for a period of time, and the grinding wheel dresser 700 can directly drew the grinding wheel without detaching the grinding wheel to other places for dressing, so that the dressing is quick and convenient.

In some embodiments of the present invention, the wheel dresser 700 is disposed on the bed 100 below the wheel housing 500 or on the first stand 300 above the wheel housing 500. The grinding wheel dresser 700 may be disposed at two positions, the first position is shown in fig. 4 and 5, the grinding wheel dresser 700 is disposed on the machine body 100 and located between one of the workpiece spindle C-axis 600 and the first upright 300, and is located below the grinding wheel box 500 and at a position where the grinding wheel can approach, in which case, the grinding wheel dresser 700 is closer to the grinding wheel, and further, dressing the grinding wheel is more convenient, and in addition, mounting the grinding wheel dresser 700 is also more convenient. The second position sets up on the first stand 300 of emery wheel box 500 top, and specifically, is provided with the slide rail along vertical direction on the first stand 300, and the emery wheel trimmer 700 slides and sets up on the slide rail, and then the emery wheel trimmer 700 can go up and down for it is more convenient when repairing the emery wheel, and the trimming precision is higher moreover.

In some embodiments of the present invention, a swing shaft is provided on the bed 100 or the first column 300 to be vertically rotated, and the wheel dresser 700 is provided on the swing shaft. The grinding wheel dresser 700 comprises a driving motor arranged on a swinging shaft and a grinding wheel dressing head arranged on an output shaft of the driving motor, wherein the output shaft of the driving motor is horizontally arranged, and the swinging shaft can adjust the dressing angle of the grinding wheel dresser 700, so that the grinding wheel dresser 700 is more convenient to dress and higher in dressing precision. It should be noted that, the swing shaft may be directly driven by the built-in motor without any other transmission mechanism, so that the dressing of the grinding wheel dresser 700 is more accurate.

In some embodiments of the present invention, as shown in fig. 3 to 6, a second upright 800 is disposed on the machine tool body 100 corresponding to each workpiece spindle C axis 600, a supporting portion 801 is disposed on the second upright 800 in a lifting manner, and the supporting portion 801 is located above the corresponding workpiece spindle C axis 600. When the gear is mounted on the workpiece spindle C-axis 600, the corresponding holding portion 801 is moved downward, so that the holding portion 801 holds the upper end surface of the gear, thereby preventing the gear from being shifted or dropped during processing. It should be noted that, the supporting portion 801 may be liftably disposed on the second upright 800, and a slide rail may be disposed on the second upright 800 along a vertical direction, the supporting portion 801 is slidably disposed on the slide rail, and a driving device such as a motor screw mechanism, an air cylinder or an oil cylinder connected to the supporting portion 801 may be disposed on the second upright 800, so that the supporting portion 801 may be controlled to move up and down along the slide rail by the driving device, thereby lifting the supporting portion 801. Of course, the driving device may directly control the vertical movement of the top portion 801 without providing the slide rail. The top 801 may be a tip sleeve. In addition, taking the case of two workpiece spindle C-axes 600 as an example, two second columns 800 are correspondingly provided, and the two second columns 800 may be sequentially provided along the connecting line direction of the two workpiece spindle C-axes 600 and located at two sides of the two workpiece spindle C-axes 600, that is, the two second columns 800 are located at two ends of the connecting line of the two workpiece spindle C-axes 600, so that the distance that the first column 300 needs to move along the horizontal axis Y-axis is less, the processing time is less, and the processing efficiency is higher.

In some embodiments of the present invention, an X-axis guide rail is disposed on the bed 100, the sliding table 200 is slidably disposed on the X-axis guide rail, a Y-axis guide rail is disposed on the sliding table 200, the first upright 300 is slidably disposed on the Y-axis guide rail, a Z-axis guide rail is disposed on the first upright 300, and the revolving axle box 400 is slidably disposed on the Z-axis guide rail. The provision of the X-axis guide rail, the Y-axis guide rail, and the Z-axis guide rail can ensure that the slide table 200, the first column 300, and the revolving shaft box 400 move in the set direction, and thus can reduce machining errors. It is understood that the length direction of the X-axis guide rail is the horizontal axial X-axis direction, the length direction of the Y-axis guide rail is the horizontal axial Y-axis direction, and the length direction of the Z-axis guide rail is the vertical axial Z-axis direction.

In some embodiments of the present invention, the multi-station numerical control gear grinding machine further includes a first driving mechanism, a second driving mechanism and a third driving mechanism, where the first driving mechanism is disposed on the machine body 100 and is in transmission connection with the sliding table 200, so as to control the sliding table 200 to slide along the X-axis guide rail; the second driving mechanism is arranged on the sliding table 200 and is in transmission connection with the first upright 300 so as to control the first upright 300 to slide along the Y-axis guide rail; the third driving mechanism is disposed on the first upright 300 and is in transmission connection with the revolving axle box 400, so as to control the revolving axle box 400 to slide along the Z-axis guide rail. The first driving mechanism, the second driving mechanism and the third driving mechanism can adjust the positions of the sliding table 200, the first upright post 300 and the rotary shaft box 400, and further adjust the positions of the grinding wheel and the workpiece.

In some embodiments of the invention, the first, second and third drive mechanisms are motor screw mechanisms or linear motors or cylinders. Taking the first driving mechanism as a motor screw rod mechanism as an example, specifically, the motor screw rod mechanism comprises a motor, a screw rod and a nut, the motor is arranged on the lathe bed 100, the screw rod is fixedly connected with an output shaft of the motor, the nut is fixedly arranged on the sliding table 200, the screw rod is in threaded connection with the nut, and when the motor drives the screw rod to rotate, the screw rod can drive the nut to move, and the nut can drive the sliding table 200 to move. The motor screw rod mechanism is stable in transmission and accurate in adjustment. The first driving mechanism, the second driving mechanism, and the third driving mechanism may be an air cylinder, an oil cylinder, a linear motor, or the like.

In some embodiments of the present invention, a built-in motor is disposed below the workpiece spindle C-axis 600 in the bed 100, and an output shaft of the built-in motor is connected to the workpiece spindle C-axis 600. The built-in motor is directly connected with the workpiece spindle C shaft 600, and compared with the existing workpiece spindle C shaft 600 and a driving motor, a transmission mechanism is arranged between the workpiece spindle C shaft 600 and the driving motor, and the arrangement mode of the embodiment can reduce errors caused by transmission of the transmission mechanism, so that machining is more accurate. The built-in motor can be a servo motor, so that stepless speed regulation can be performed.

Furthermore, in some embodiments of the present invention, a built-in motor is disposed within the swivel axle housing 400, and an output shaft of the built-in motor is coupled to the swivel axle a. Compared with the prior art, the transmission mechanism is arranged between the A shaft of the rotary shaft and the driving motor, and the arrangement mode of the embodiment can reduce errors caused by transmission of the transmission mechanism, so that machining is more accurate. The B axis of the grinding wheel spindle can also be directly driven by a built-in motor. The built-in motor can be a servo motor, so that stepless speed regulation can be performed.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multi-station numerical control gear grinding machine, comprising:

a bed body;

the two workpiece main shafts C are sequentially arranged on the lathe bed along the direction parallel to the Y axis and are positioned on one side of the first upright post corresponding to the grinding wheel, the workpiece main shafts C are vertically arranged, and the upper ends of the workpiece main shafts C are used for installing workpieces;

the two second upright posts are arranged on the lathe bed and are positioned on one side, away from the C axis, of the workpiece main shaft, and the second upright posts are provided with jacking parts in a lifting manner, wherein the jacking parts are positioned above the corresponding C axes of the workpiece main shaft;

the multi-station numerical control gear grinding machine further comprises a grinding wheel dresser, wherein the grinding wheel dresser is used for dressing the grinding wheel;

the grinding wheel trimmer is arranged on the lathe bed and is positioned below the grinding wheel box body;

the grinding wheel dresser is arranged on the swinging shaft;

the machine tool body is provided with an X-axis guide rail, the sliding table is arranged on the X-axis guide rail in a sliding way, the sliding table is provided with a Y-axis guide rail, the first upright post is arranged on the Y-axis guide rail in a sliding way, the first upright post is provided with a Z-axis guide rail, and the rotary axle box body is arranged on the Z-axis guide rail in a sliding way;

the multi-station numerical control gear grinding machine further comprises:

the third driving mechanism is arranged on the first upright post and is in transmission connection with the rotary axle box body, so as to control the rotary axle box body to slide along the Z-axis guide rail;

the first driving mechanism, the second driving mechanism and the third driving mechanism are motor screw rod mechanisms or linear motors or air cylinders or oil cylinders;

and built-in motors are arranged in the lathe bed below the workpiece spindle C shaft and in the rotary shaft box body, wherein an output shaft of one built-in motor is connected with the workpiece spindle C shaft, and an output shaft of the other built-in motor is connected with the rotary shaft A shaft.