High-precision vertical pin gear housing compound grinding machine

Abstract

The present invention relates to a high-precision vertical pin-tooth housing composite grinding machine, comprising a machine body, a column and a turntable, a grinding head assembly is arranged on the column, the grinding head assembly comprises a tooth groove grinding wheel assembly and an inner and outer circular end surface grinding wheel assembly arranged in a transverse direction, a turntable lifting device for driving the turntable to lift is arranged on the machine body, the turntable can be lifted and lowered on the machine body through the turntable lifting device, an X-direction sliding device for driving the grinding head assembly to reciprocate in the transverse direction is arranged on the column, the X-direction sliding device comprises at least two X-direction guide rail pairs, a saddle supported on the X-direction guide rail pair and an X-direction driving mechanism for driving the saddle to slide in the transverse direction, wherein one X-direction guide rail pair is arranged at the top of the column, the other X-direction guide rail pair is arranged on the column and is located obliquely downward and in front of the X-direction guide rail pair at the top position, and the tooth groove grinding wheel assembly and the inner and outer circular end surface grinding wheel assembly are installed on the saddle. It has the advantages of good equipment rigidity and stable and reliable operation.

Description

Technical Field

[0001] The invention relates to the technical field of machining machine tools, in particular to a vertical pin-tooth housing compound grinding machine. Background Art

[0002] Industrial robots are an important industrial technology for the intelligent and flexible development of manufacturing and the promotion of industrial upgrading. They are also a solution to the labor shortage caused by the aging population. The transmission performance of the cycloid reducer, the core component of industrial robots, directly affects the robot's motion accuracy. In the transmission of the cycloid reducer, the cycloid pinwheel has the greatest impact on the motion accuracy, and the manufacturing accuracy of the pinwheel housing determines the stability, load-bearing capacity and life of the cycloid reducer.

[0003] The existing grinding process of the pinion housing adopts a composite grinding machine, such as the "A composite grinding machine for grinding pinion housing" disclosed in the patent document with Chinese patent number CN 201310195905.4 (authorization announcement number CN 103264342B), its main structure is: including a bed, a column arranged on the bed and a workpiece fixture, the column is provided with a tooth groove grinding wheel head and an inner and outer cylindrical end surface grinding wheel head, the tooth groove grinding wheel head includes a tooth groove grinding wheel spindle and a cylindrical grinding wheel, the inner and outer cylindrical end surface grinding wheel head includes an inner and outer cylindrical end surface grinding wheel spindle and a disc grinding wheel, for the convenience of description, the tooth groove grinding wheel head and the inner and outer cylindrical end surface grinding wheel head are collectively referred to as the head general bearing, the tooth groove grinding wheel head and the inner and outer cylindrical end surface grinding wheel head are installed on the column via a sliding mechanism, the sliding mechanism includes a lifting mechanism and a horizontal transverse slide rail mechanism, the tooth groove grinding wheel head and the inner and outer cylindrical end surface grinding wheel head are installed on the Y-direction slide plate of the horizontal transverse slide rail mechanism, and the horizontal transverse slide rail mechanism is installed on the Z-direction slide plate of the lifting mechanism.

[0004] The existing structure of the composite grinding machine for grinding needle gear housing has the following defects: the machine head total bearing is hoisted on the column by a sliding mechanism, and the sliding mechanism is installed on the lifting mechanism by a horizontal transverse slide rail mechanism. The grinding machine is a large-scale equipment, and its machine head total bearing weight is large. The equipment is in a high-speed operation state, and the machine head total bearing has a large inertia during operation. The horizontal transverse slide rail mechanism adopts a flat-mounted Y-direction slide plate structure design, which has the problems of insufficient rigidity and poor operation stability. The lifting mechanism carries the transverse slide rail mechanism and the machine head total bearing. The lifting mechanism carries a large weight and a large lifting motion inertia. Therefore, the motor of the machine head assembly will form equipment resonance during operation and the operation of the sliding mechanism, thereby affecting the reliability of the equipment operation and the processing accuracy of the parts. Therefore, the existing composite grinding machine cannot adapt well to the grinding of needle gear housings with high-precision processing requirements. Summary of the invention

[0005] Purpose of the invention: To overcome the defects of the prior art, the present invention provides a high-precision vertical pin gear housing composite grinder with stable and reliable operation.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A high-precision vertical pin-tooth housing compound grinding machine comprises a machine body, a column and a turntable for fixing a workpiece are arranged on the machine body, a grinding head assembly is arranged on the column, the grinding head assembly comprises a tooth groove grinding wheel assembly and an inner and outer circular end surface grinding wheel assembly arranged in a transverse direction, and is characterized in that: a turntable lifting device for driving the turntable to lift and lower is provided on the machine body, and the turntable can be lifted and lowered on the machine body through the turntable lifting device, an X-direction sliding device for driving the grinding head assembly to reciprocate in the transverse direction is provided on the column, 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 slide in the transverse direction, wherein one X-direction guide rail pair is arranged at the top end of the column, and the other X-direction guide rail pair is arranged on the column and is located obliquely downward in front of the X-direction guide rail pair at the top position, and the tooth groove grinding wheel assembly and the inner and outer circular end surface grinding wheel assembly are mounted on the saddle.

[0008] By adopting the above technical scheme, the left and right movement of the saddle is close to the grinding head assembly (entering the grinding position), the turntable slides back and forth up and down to realize tooth groove grinding, the lifting and lowering and lateral reciprocating sliding actions are realized on the turntable and the grinding head assembly respectively, the grinding head assembly cooperates with the reduction of movable mechanisms on the column and the total mass, thereby increasing the rigidity of the grinding head supported on the column and reducing the inertia of the equipment operation, making the equipment operation more stable and reliable; in addition, the turntable lifting action is adopted, and the grinding head assembly is a lateral sliding operation, the grinding head is supported by the saddle and the X-guide pair at the top of the column and another guide pair located at the top position The X-guide pair is obliquely lower and in front of the X-guide pair is supported, which greatly improves the rigidity of the saddle supported on the column, that is, the rigidity of the grinding head movable support on the column is improved, the station switching stability of the lateral sliding of the grinding head assembly is improved, and the stability of the grinding head during operation is improved, and equipment resonance is avoided; thereby achieving a good satisfaction of the workpiece processing accuracy requirements.

[0009] Preferably, the top of the column is provided with an upper horizontal mounting platform for installing the guide rail pair, the column is provided with a lower horizontal mounting platform located obliquely downward and in front of the upper horizontal mounting platform, the two X-direction guide rail pairs are laid flat on the upper horizontal mounting platform and the lower horizontal mounting platform respectively, the top of the column is provided with an inclined surface, the slope angle of the inclined surface is 30°~60°, the upper horizontal mounting platform is provided on the upper part of the inclined surface at the top of the column, and the lower horizontal mounting platform is located at the lower part of the inclined surface at the top of the column. Under this structural design, the column forms a reliable and stable support for the saddle, thereby improving the saddle support stiffness and running stability.

[0010] Preferably, the turntable lifting device includes a lifting slide, a Z-direction track pair and a lifting driver, the Z-direction track pair is installed on the column, the lifting slide is lifted and slidably matched on the column through the Z-direction track pair, the turntable is rotated and matched on the lifting slide, and a balancing cylinder is provided between the bottom of the lifting slide and the fuselage to support the lifting slide on the fuselage. Under this structural design, the balancing cylinder supports the lifting slide, thereby reducing the force on the Z-direction track pair and playing a buffering and shock-absorbing role, making the operation of the lifting slide more stable and reliable.

[0011] Preferably, the cylinder body of the balancing cylinder is hinged to the fuselage, the cylinder arm of the balancing cylinder is hinged to the bottom of the lifting slide, the balancing cylinder is arranged at the central axis position of the lifting slide, the hinge direction of the cylinder body of the balancing cylinder or the hinge direction of the cylinder arm of the balancing cylinder is perpendicular to the Z-direction track pair, and the hinge direction of the cylinder body is arranged perpendicular to the hinge direction of the cylinder arm. With this structural design, the balancing cylinder automatically aligns its center to ensure parallelism with the Z-direction track pair, thereby improving the stability of the operation of the lifting slide.

[0012] Preferably, the grinding wheel of the tooth groove grinding wheel assembly is correspondingly equipped with a tooth groove grinding wheel dressing device, the tooth groove grinding wheel dressing device includes a mounting frame, a tooth groove grinding wheel dressing head and a dressing follower mechanism, the mounting frame is fixed on a column or a turntable lifting device, the dressing follower mechanism is installed on the mounting frame, the dressing follower mechanism includes a Y-axis slide seat that slides along the front and rear directions and cooperates with the mounting frame, and a Y-axis following motor that drives the Y-axis slide seat to slide linearly, the tooth groove grinding wheel dressing head is installed on the Y-axis slide seat and slides along the front and rear directions with the Y-axis slide seat, and the tooth groove grinding wheel dressing head is arranged toward the tooth groove grinding wheel of the tooth groove grinding wheel assembly. Under this structural design, the tooth groove grinding wheel dressing head can follow in the Y direction, and the tooth groove grinding wheel can move horizontally with the saddle to achieve interpolation, so that the grinding wheel of the tooth groove grinding wheel assembly is suitable for different types of tooth grinding, has good versatility, and has higher grinding accuracy.

[0013] Preferably, the dressing follower mechanism further includes a rotating seat arranged in a horizontal position and a rotating drive motor driving the rotating seat to rotate, the tooth groove grinding wheel dressing head is mounted on the rotating seat and rotates with the rotating seat, and the rotating seat is mounted on the Y-axis slide seat and slides along the front-rear direction with the Y-axis slide seat. Under this structural design, interpolation can dress any tooth shape and realize normal tracking interpolation, thereby improving the grinding accuracy of the grinding wheel of the tooth groove grinding wheel assembly.

[0014] Preferably, the tooth groove grinding wheel dressing head is adjustable along the horizontal lateral position and is arranged on the rotating seat, and the rotating seat is provided with an X-axis position adjustment component, which includes a mounting seat plate, an adjusting screw and an adjusting nut. The tooth groove grinding wheel dressing head is fixedly mounted on the mounting seat plate, and the mounting seat plate can be linearly slidably matched on the rotating seat along the horizontal lateral direction. The adjusting nut is fixed to the bottom of the mounting seat plate, and the adjusting nut is threadably matched with the adjusting screw, and the adjusting screw is positioned and rotated to match the rotating seat. Under this structural design, the horizontal lateral position adjustment of the tooth groove grinding wheel dressing head is realized, thereby realizing the dressing of arcs of any radius.

[0015] Preferably, the turntable lifting device is provided with an inner and outer circular end surface grinding wheel dressing device which is lifted and lowered along with the turntable, and the inner and outer circular end surface grinding wheel dressing device comprises a fixed frame, an inner and outer circular end surface grinding wheel dressing head and an inner and outer circular end surface grinding wheel dressing head driving motor, the inner and outer circular end surface grinding wheel dressing head is horizontally rotated and matched with the fixed frame, and the inner and outer circular end surface grinding wheel dressing head driving motor drives the inner and outer circular end surface grinding wheel dressing head to rotate. Under this structural design, the grinding wheel dressing of the inner and outer circular end surface grinding wheel assembly is realized.

[0016] Preferably, the tooth groove grinding wheel assembly includes a tooth groove grinding wheel mounting spindle, the lower end of which is provided with two oppositely arranged grinding wheel seat plates, the grinding wheel seat plate is provided with a V-shaped positioning shaft hole groove, the grinding wheel seat plate is detachably provided with a positioning pressure plate covering the opening side of the V-shaped positioning shaft hole groove, the positioning pressure plate is provided with a V-shaped clamping groove opposite to the V-shaped positioning shaft hole groove, the tooth groove grinding wheel of the tooth groove grinding wheel assembly is provided with a grinding wheel shaft, the axial ends of the grinding wheel shaft are respectively installed in the V-shaped clamping grooves of the two grinding wheel seat plates and are limited by the positioning pressure plate, the depth of the V-shaped clamping groove is less than the V-shaped positioning shaft hole groove, and the angle of the V-shaped clamping groove is greater than the angle of the V-shaped positioning shaft hole groove. Under this structural design, high-precision positioning and rapid replacement of the grinding wheel shaft are convenient. Under this structural design, the tooth groove grinding wheel of the tooth groove grinding wheel assembly is installed on the grinding wheel shaft, and the grinding wheel shaft is positioned by the V-shaped clamping groove and the positioning pressure plate. The V-shaped clamping groove of the grinding wheel seat plate and the V-shaped clamping groove of the positioning pressure plate cooperate to realize the rapid positioning of the grinding wheel shaft. The tooth groove grinding wheel can be disassembled by removing the positioning pressure plate. During installation, the grinding wheel shaft is placed on the V-shaped clamping groove of the grinding wheel seat plate and fixed by the V-shaped clamping groove of the positioning pressure plate to achieve the installation of the tooth groove grinding wheel. The tooth groove grinding wheel has the advantages of convenient disassembly and assembly and reliable installation.

[0017] Preferably, the tooth groove grinding wheel assembly and the inner and outer cylindrical end surface grinding wheel assembly are installed on the same saddle. Under this structural design, the structure is simplified, and the position of the tooth groove, the bearing positions at both ends and the installation position of the needle gear housing after processing is ensured, so as to meet the high-precision processing requirements of the needle gear housing.

[0018] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a high-precision vertical pin-tooth housing compound grinding machine according to a specific embodiment of the present invention;

[0020] Figure 2 It is a structural schematic diagram of a tooth groove grinding wheel dressing device according to a specific embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the assembly structure of a toothed grinding wheel according to a specific embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of the main shaft structure for mounting a toothed grinding wheel in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0023] See attached Figures 1 to 4 It should be pointed out that in order to facilitate a better understanding of the orientations referred to in the invention, corresponding direction markings are made in the accompanying drawings; such as "lateral", "horizontal lateral", and "X direction" are the X-axis directions shown in the accompanying drawings, the direction of "lifting" and "Z direction" are the Z-axis directions shown in the accompanying drawings, and the corresponding "top" is the z1 direction of the Z axis of the component, "bottom" is the z2 direction of the Z axis of the component, "front and back direction", and "Y direction" are the Y-axis directions shown in the accompanying drawings, and the corresponding "front" is the y1 direction of the Y-axis direction.

[0024] The invention discloses a high-precision vertical pin gear housing composite grinding machine, comprising a machine body 1, a column 2 and a turntable 3 for fixing a workpiece (pin gear housing) on ​​the machine body 1, the turntable 3 is driven by a high-precision motor, a grinding head assembly is arranged on the column 2, and the grinding head assembly comprises a tooth groove grinding wheel assembly 4 and an inner and outer cylindrical end surface grinding wheel assembly 5 arranged in a transverse direction, the tooth groove grinding wheel assembly 4 is used for tooth groove grinding of the pin gear housing, and the inner and outer cylindrical end surface grinding wheel assembly 5 is used for inner and outer cylindrical end surface grinding of the pin gear housing, which can all adopt the existing technology The inner and outer cylindrical end surface grinding wheel assembly 5 usually includes an inner and outer cylindrical end surface grinding wheel 51, an inner and outer cylindrical end surface grinding wheel driving shaft 52 and an inner and outer cylindrical end surface grinding wheel driving motor 53. The inner and outer cylindrical end surface grinding wheel 51 is installed on the inner and outer cylindrical end surface grinding wheel driving shaft 52 and is driven to rotate by the inner and outer cylindrical end surface grinding wheel driving motor 53. The inner and outer cylindrical end surface grinding wheel driving shaft 52 is driven by the inner and outer cylindrical end surface grinding wheel driving motor 53. The tooth groove grinding wheel assembly 4 includes a tooth groove grinding wheel mounting spindle 41, a tooth groove grinding wheel The toothed grinding wheel 42 and the toothed grinding wheel driving mechanism for driving the toothed grinding wheel 42, the toothed grinding wheel is rotatably matched with the toothed grinding wheel mounting spindle 41 and driven by the toothed grinding wheel driving mechanism, the toothed grinding wheel driving mechanism can usually be realized by a motor and a synchronous belt 43; in order to improve the rigidity of the equipment and the stability of operation, the invention adopts the following improved design: the machine body 1 is provided with a turntable lifting device 6 for driving the turntable 3 to rise and fall, the turntable 3 can be lifted and lowered on the machine body 1 through the turntable lifting device 6, and the column 2 is An X-direction sliding device is provided for driving the grinding machine head assembly to move back and forth in the horizontal direction. The X-direction sliding device includes at least two X-direction guide rail pairs 7, a saddle 2-1 supported on the X-direction guide rail pair 7, and an X-direction driving mechanism 2-2 for driving the saddle 2-1 to slide in the horizontal direction. One X-direction guide rail pair 7-1 is arranged at the top of the column 2, and the other X-direction guide rail pair 7-2 is arranged on the column 2 and is located obliquely downward in front of the top position X-direction guide rail pair 7-1. The tooth groove grinding wheel assembly 4 and the inner and outer cylindrical end surface grinding wheel assembly 5 are installed on the saddle 2-1. The tooth groove grinding wheel assembly 4 and the inner and outer cylindrical end surface grinding wheel assembly 5 are installed on the same saddle 2-1, so that the structure is simplified and the position of the tooth groove and the bearing positions at both ends of the processed needle gear housing is guaranteed; of course, the tooth groove grinding wheel assembly and the inner and outer cylindrical end surface grinding wheel assembly can also be independently equipped with a saddle design, but the number of saddles increases, making the structure complicated. The X-axis driving mechanism is a conventional technology, such as a motor combined with a lead screw and nut mechanism.

[0025] The top of the column 2 is provided with an upper horizontal mounting platform 21 for the guide rail pair to be installed, and the corresponding X-guide rail pair 7-1 located at the top of the column 2 is installed flatly on the upper horizontal mounting platform 21; the column 2 is provided with a lower horizontal mounting platform 22 located in front of the upper horizontal mounting platform 21, and another X-guide rail pair 7-2 is installed flatly on the lower horizontal mounting platform 22. The X-guide rail pair is installed flatly, so that the column forms a good supporting effect on the saddle, thereby improving the supporting stiffness and running stability of the saddle. Of course, it is also possible to set a mounting inclined plane on the column, and the X-guide rail pair is installed parallel to the mounting inclined plane; or an upper horizontal mounting platform is set at the top of the column, one X-guide rail pair is laid flat on the upper horizontal mounting platform, and the other X-guide rail pair is set on the front side of the column, so as to realize the support of the rear end column of the saddle, and the front end is hoisted on the column through the X-guide rail pair, etc.; but the structural design of this specific embodiment can improve the supporting stiffness of the saddle, so the structural design of this specific embodiment is preferably used. A slope 23 is provided on the top of the column 2, and the slope angle of the slope is designed to be 30°~60° (angle θ shown in the figure). The upper horizontal mounting platform 21 is arranged on the upper part of the slope 23 on the top of the column 2, and the lower horizontal mounting platform 22 is located on the lower part of the slope 23 on the top of the column 2, so as to achieve a good saddle support effect; in addition, the slope design can achieve spatial concession, which can improve the structural strength of the saddle and ensure the support effect; the X-axis drive mechanism is installed on the slope, and the slope design facilitates the installation and arrangement of the X-axis drive mechanism.

[0026] The turntable lifting device 6 includes a lifting slide 61, a Z-direction track pair 62 and a lifting driver 63. The lifting driver 63 is preferably implemented by a motor and a lead screw nut mechanism. The Z-direction track pair 62 is installed on the column 1. The lifting slide 61 is lifted and slidably matched on the column 1 through the Z-direction track pair 62. The turntable 3 is rotated and matched on the lifting slide 61. A balancing cylinder 6-1 is provided between the bottom of the lifting slide 61 and the fuselage 1 to support the lifting slide 61 on the fuselage 1. The balancing cylinder supports the lifting slide, thereby reducing the force on the Z-direction track pair and playing a buffering and shock-absorbing role, making the operation of the lifting slide more stable and reliable.

[0027] Furthermore, the balancing cylinder 6-1 corresponds to the central axis position of the lifting slide, the cylinder body 6-11 of the balancing cylinder 6-1 is hinged on the fuselage 1 (the cylinder body hinge end 6-111 shown in the figure), and the cylinder arm 6-12 of the balancing cylinder 6-1 is hinged at the bottom of the lifting slide 61 (the cylinder arm hinge end 6-121 shown in the figure), and the hinge direction of the cylinder body of the balancing cylinder 6-1 or the hinge direction of the cylinder arm 6-12 of the balancing cylinder 6-1 is perpendicular to the Z-direction track pair 62. The hinge direction of the cylinder arm of the balancing cylinder can also be adopted to face the installation position of the Z-direction track pair, and the hinge direction of the cylinder body 6-11 is perpendicular to the hinge direction of the cylinder arm 6-12. The balancing cylinder under this design can automatically align its center to ensure parallelism with the Z-direction track pair, thereby improving the stability of the operation of the lifting slide.

[0028] Usually, both the inner and outer cylindrical end grinding wheels and the tooth groove grinding wheels are equipped with corresponding dressing devices to ensure the machining accuracy of the needle gear housing. In this specific embodiment, the column 2 is provided with a tooth groove grinding wheel dressing device 8 that corresponds to the grinding wheel of the tooth groove grinding wheel assembly 4. Of course, the tooth groove grinding wheel dressing device 8 can also be set on the turntable lifting device 6. The tooth groove grinding wheel dressing device 8 includes a mounting frame 81, a tooth groove grinding wheel dressing head 82 and a dressing follower mechanism. The mounting frame 81 is fixed on the column 2 (or the mounting frame 81 is fixed on the lifting slide 61 of the turntable lifting device 6), and the dressing follower mechanism is installed on the mounting frame 81. The dressing follower mechanism includes a front and rear sliding mechanism. Cooperating with the Y-axis slide 83 on the mounting frame 81 and the Y-axis follower motor 84 driving the Y-axis slide 83 to slide linearly, the tooth groove grinding wheel dressing head 82 is installed on the Y-axis slide 83 and slides along the front-to-back direction (i.e., the Y-axis) with the Y-axis slide 83. The tooth groove grinding wheel dressing head 82 is set toward the tooth groove grinding wheel 42 of the tooth groove grinding wheel assembly 4. The tooth groove grinding wheel dressing head moves in the Y direction and cooperates with the tooth groove grinding wheel to move horizontally with the saddle to realize interpolation, so that the grinding wheel of the tooth groove grinding wheel assembly is suitable for different types of tooth grinding processing and has good versatility.

[0029] Furthermore, the dressing follower mechanism also includes a rotating seat 87 arranged in a horizontal and flat manner (it should be particularly pointed out here that the horizontal and flat means lying on the plane where the X and Y directions are located) and a rotary drive motor 88 that drives the rotating seat 87 to rotate. The tooth groove grinding wheel dressing head 82 is installed on the rotating seat 87 and rotates with the rotating seat 87. The rotating seat 87 is installed on the Y-direction slide 83 and slides along the front and rear directions with the Y-direction slide 83. The rotation of the tooth groove grinding wheel dressing head is introduced to realize normal interpolation, thereby improving the grinding accuracy of the grinding wheel of the tooth groove grinding wheel assembly. Moreover, when the Y-direction slide is fixed, the high-precision arc tooth grinding of the tooth groove grinding wheel can be realized by relying on the rotating seat.

[0030] In order to further improve the dressing reliability, the dressing follower mechanism also includes a dressing centering component, which includes a Z-direction slide 85 that is lifted and slidably matched on the Y-direction slide 83, and a Z-direction drive motor 86 that drives the Z-direction slide 85 to lift and lower, and a rotating seat 87 that is rotatably matched on the Z-direction slide 85. The tooth groove grinding wheel dressing head moves in the Z direction to achieve centering with the tooth groove grinding wheel, thereby improving the grinding processing accuracy.

[0031] Furthermore, the tooth groove grinding wheel dressing head 82 is adjustable along the horizontal lateral position and is arranged on the rotating seat 87. The rotating seat 87 is provided with an X-direction position adjustment component, which includes a mounting seat plate 881, an adjusting screw 882 and an adjusting nut (not shown in the figure). The tooth groove grinding wheel dressing head 82 is fixedly mounted on the mounting seat plate 881, and the mounting seat plate 881 can be linearly slidably matched on the rotating seat 87 along the horizontal lateral direction. The adjusting nut is fixed to the bottom of the mounting seat plate 881, and the adjusting nut is threadedly matched with the adjusting screw 882. The adjusting screw 882 is positioned and rotated to match the rotating seat 87. The horizontal lateral position adjustment of the tooth groove grinding wheel dressing head is realized, so as to realize quick and convenient adaptation to the arc size adjustment and realize the dressing of the arc of any radius. The adjusting screw can be manually operated or equipped with a motor to realize automation.

[0032] The turntable lifting device 6 is provided with an inner and outer circular end surface grinding wheel dressing device 9 which is lifted and lowered along with the turntable 3. The inner and outer circular end surface grinding wheel dressing device 9 is installed on the lifting slide 61. The inner and outer circular end surface grinding wheel dressing device 9 includes a fixed frame 91, an inner and outer circular end surface grinding wheel dressing head 92 and an inner and outer circular end surface grinding wheel dressing head driving motor 93. The fixed frame 91 is fixed on the lifting slide 61 of the turntable lifting device 6. The inner and outer circular end surface grinding wheel dressing head 92 is horizontally rotated and matched with the fixed frame 91. The inner and outer circular end surface grinding wheel dressing head driving motor 93 drives the inner and outer circular end surface grinding wheel dressing head 92 to rotate. The grinding wheel dressing of the inner and outer circular end surface grinding wheel assembly is realized. Among them, the inner and outer circular end surface grinding wheel dressing head can be a diamond pen or a diamond wheel according to the material of the inner and outer circular end surface grinding wheel.

[0033] In order to change the defects of the traditional tooth groove grinding wheel installation structure being complicated and the inconvenient disassembly and assembly operation, the following structure optimization is adopted: the tooth groove grinding wheel assembly 4 includes a tooth groove grinding wheel installation spindle 41, and the lower end of the tooth groove grinding wheel installation spindle 41 is provided with two oppositely arranged grinding wheel seat plates 411, and the grinding wheel seat plate 411 is provided with a V-shaped positioning shaft hole groove 412, and the grinding wheel seat plate 411 is detachably installed with a positioning pressure plate 413 covering the opening side of the V-shaped positioning shaft hole groove 412, and the positioning pressure plate 413 is provided with a V-shaped clamping groove 414 opposite to the V-shaped positioning shaft hole groove 412, and a grinding wheel shaft is installed on the tooth groove grinding wheel 42 of the tooth groove grinding wheel assembly 4, and the axial ends of the grinding wheel shaft are respectively installed in the V-shaped clamping grooves 412 of the two grinding wheel seat plates 411 and limited by the positioning pressure plate 413. Under this structural design, the tooth groove grinding wheel of the tooth groove grinding wheel assembly is installed on the grinding wheel shaft, and the grinding wheel shaft is positioned by the V-shaped clamping groove and the positioning pressure plate. The V-shaped clamping groove of the grinding wheel seat plate and the V-shaped clamping groove of the positioning pressure plate cooperate to realize the rapid positioning of the grinding wheel shaft. The tooth groove grinding wheel can be disassembled by removing the positioning pressure plate. During installation, the grinding wheel shaft is placed on the V-shaped clamping groove of the grinding wheel seat plate and fixed by the V-shaped clamping groove of the positioning pressure plate to achieve the installation of the tooth groove grinding wheel. The tooth groove grinding wheel has the advantages of convenient disassembly and assembly and reliable installation.

[0034] Furthermore, the depth of the V-shaped clamping groove 412 is less than that of the V-shaped positioning shaft hole groove 414, and the angle α of the V-shaped clamping groove 412 is greater than the angle β of the V-shaped positioning shaft hole groove 414. This facilitates high-precision positioning and rapid disassembly of the grinding wheel shaft. The guide rail pair is a conventional accessory, usually including a guide rail and a slider slidably fitted on the guide rail.

[0035] The high-precision vertical pin-tooth housing composite grinding machine of the present invention has the following technical effects:

[0036] The Z-upward action is arranged on the turntable, and the X-upward tooth groove grinding wheel assembly and the inner and outer cylindrical end surface grinding wheel assembly are arranged on the grinding head assembly for lateral movement. The grinding head assembly cooperates with the reduction of the movable mechanism on the column and the total mass, thereby increasing the rigidity of the grinding head supported on the column and reducing the inertia of the equipment operation, making the equipment operation more stable and reliable; in addition, the turntable lifting action is adopted, and the grinding head assembly is a lateral sliding operation, so that the grinding head assembly can adopt the saddle to cooperate with the X-guide rail pair at the top of the column and another guide rail located at the top position of the X-guide rail pair obliquely downward in front The rail pair is supported, which greatly improves the rigidity of the saddle support on the column, that is, improves the rigidity of the grinding head movable support on the column, improves the stability of the lateral sliding station switching of the grinding head assembly, and the stability of the grinding head during operation, and avoids equipment resonance; thereby achieving a good satisfaction of the workpiece processing accuracy requirements; and the Z-upward action is arranged on the turntable, and the X-upward tooth groove grinding wheel assembly and the inner and outer circular end surface grinding wheel assembly station switching are arranged on the grinding head assembly, which has a better spatial layout, and the turntable and the grinding head assembly form a better spatial position correspondence, and the structure is compact.

[0037] Based on the turntable lifting action and the lateral sliding action of the grinding head assembly, the tooth groove grinding wheel dressing device is arranged on the column, and the inner and outer circle end surface grinding wheel dressing device is arranged on the lifting device, which has the advantages of reasonable position arrangement and convenient installation and maintenance.

Claims

1. A high-precision vertical pin-tooth housing compound grinding machine, comprising a machine body, a column and a turntable for fixing a workpiece are arranged on the machine body, a grinding head assembly is arranged on the column, and the grinding head assembly includes a tooth groove grinding wheel assembly and an inner and outer circular end surface grinding wheel assembly arranged in a transverse direction, characterized in that: The turntable can be lifted and lowered on the machine body through the turntable lifting device, and the column is provided with an X-direction sliding device for driving the grinding head assembly to move back and forth laterally. The X-direction sliding device includes at least two X-guide rail pairs, a saddle supported on the X-guide rail pair, and an X-direction driving mechanism that drives the saddle to slide laterally, wherein one X-guide rail pair is arranged at the top of the column, and the other X-guide rail pair is arranged on the column and is located obliquely downward in front of the X-guide rail pair at the top position. The grinding wheel of the tooth groove grinding wheel assembly is correspondingly matched with a tooth groove grinding wheel dressing device, and the tooth groove grinding wheel dressing device includes a mounting frame, a tooth groove grinding wheel dressing head and a dressing follower mechanism, the mounting frame is fixed on the column, and the dressing follower mechanism is installed on the mounting frame, and the dressing follower mechanism includes The invention comprises a Y-axis slide which slides along the front-rear direction and cooperates with the mounting frame, and a Y-axis follower motor which drives the Y-axis slide to slide linearly. The tooth groove grinding wheel dressing head is installed on the Y-axis slide and slides along the front-rear direction with the Y-axis slide. The tooth groove grinding wheel dressing head is arranged toward the tooth groove grinding wheel of the tooth groove grinding wheel assembly. The turntable lifting device comprises a lifting slide, a Z-axis track pair and a lifting drive. The Z-axis track pair is installed on the column. The lifting slide is lifted and slidably cooperates with the column via the Z-axis track pair. The turntable rotates and cooperates with the lifting slide. A balancing cylinder is provided between the bottom of the lifting slide and the fuselage. The turntable lifting device is provided with an inner and outer circular end face grinding wheel dressing device. The tooth groove grinding wheel assembly and the inner and outer circular end face grinding wheel assembly are installed on the same saddle.

2. The high-precision vertical pin gear housing compound grinding machine according to claim 1, characterized in that: An upper horizontal mounting platform for installing the guide rail pair is provided at the top of the column, and a lower horizontal mounting platform is provided on the column, which is located obliquely downward and in front of the upper horizontal mounting platform. The two X-direction guide rail pairs are respectively laid flat on the upper horizontal mounting platform and the lower horizontal mounting platform. A slope is provided on the top of the column, and the slope angle of the slope is 30°~60°. The upper horizontal mounting platform is arranged on the upper part of the slope on the top of the column, and the lower horizontal mounting platform is located on the lower part of the slope on the top of the column.

3. The high-precision vertical pin gear housing compound grinding machine according to claim 1, characterized in that: The cylinder body of the balancing cylinder is hinged on the fuselage, the cylinder arm of the balancing cylinder is hinged on the bottom of the lifting slide, the balancing cylinder is arranged at the central axis position of the lifting slide, the hinge direction of the cylinder body of the balancing cylinder or the hinge direction of the cylinder arm of the balancing cylinder is perpendicular to the Z-direction track pair, and the hinge direction of the cylinder body is arranged perpendicular to the hinge direction of the cylinder arm.

4. The high-precision vertical pin gear housing compound grinding machine according to claim 1, characterized in that: The dressing follower mechanism also includes a rotating seat arranged horizontally and a rotating drive motor driving the rotating seat to rotate. The tooth groove grinding wheel dressing head is installed on the rotating seat and rotates with the rotating seat. The rotating seat is installed on the Y-axis slide and slides along the front and rear directions with the Y-axis slide.

5. The high-precision vertical pin gear housing compound grinding machine according to claim 1, characterized in that: The tooth groove grinding wheel dressing head is adjustable in horizontal lateral position on the rotating seat, and an X-axis position adjustment component is provided on the rotating seat. The X-axis position adjustment component includes a mounting seat plate, an adjusting screw and an adjusting nut. The tooth groove grinding wheel dressing head is fixedly mounted on the mounting seat plate, and the mounting seat plate can be linearly slidably matched on the rotating seat along the horizontal lateral direction. The adjusting nut is fixed to the bottom of the mounting seat plate, and the adjusting nut is threadably matched with the adjusting screw, and the adjusting screw is positioned and rotated to match the rotating seat.

6. The high-precision vertical pin gear housing compound grinding machine according to claim 1, characterized in that: The inner and outer circular end surface grinding wheel dressing device comprises a fixed frame, an inner and outer circular end surface grinding wheel dressing head and an inner and outer circular end surface grinding wheel dressing head driving motor. The inner and outer circular end surface grinding wheel dressing head is horizontally rotated and matched with the fixed frame. The inner and outer circular end surface grinding wheel dressing head driving motor drives the inner and outer circular end surface grinding wheel dressing head to rotate.

7. The high-precision vertical pin-tooth housing compound grinding machine according to claim 1, characterized in that: The tooth groove grinding wheel assembly comprises a tooth groove grinding wheel mounting spindle, the lower end of which is provided with two grinding wheel seat plates arranged oppositely, the grinding wheel seat plate is provided with a V-shaped positioning shaft hole groove, the grinding wheel seat plate is detachably provided with a positioning pressure plate which is covered on the opening side of the V-shaped positioning shaft hole groove, the positioning pressure plate is provided with a V-shaped clamping groove opposite to the V-shaped positioning shaft hole groove, a grinding wheel shaft is installed on the tooth groove grinding wheel of the tooth groove grinding wheel assembly, the axial ends of the grinding wheel shaft are respectively installed in the V-shaped clamping grooves of the two grinding wheel seat plates and are limited by the positioning pressure plate, the depth of the V-shaped clamping groove is smaller than the V-shaped positioning shaft hole groove, and the included angle of the V-shaped clamping groove is larger than the included angle of the V-shaped positioning shaft hole groove.

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