Grinding machine A shaft assembly assembling testboard

Abstract

The grinding machine A-axis assembly assembling test board comprises a rack, a supporting table is fixed to the rack, the top face of the supporting table is parallel to the horizontal ground, and the length direction of the top face of the supporting table is parallel to the X axis. A locking supporting mechanism used for locking a bearing of the A-axis assembly and enabling the axis of a driving shaft of the A-axis assembly to be parallel to the top face of the supporting table and the X axis is installed on the top face of the supporting table and connected with a locking mechanism used for fixing the bearing of the A-axis assembly and the driving shaft at any position in the rotating direction of the driving shaft and achieving unlocking. A three-axis moving frame is further installed on the top face of the supporting table and connected with a dial indicator, a measuring head of the dial indicator is parallel to the Y axis, a grating ruler is arranged on one side of the machine frame in the length direction of the supporting table, and a precise right-angle ruler is movably placed on the top face of the supporting table. According to the invention, the beating degree of the millstone, the parallelism of the millstone and the axis of the driving shaft and the coplanarity of a plurality of millstones on the same mounting surface of the polygonal body are accurately measured.

Description

Technical Field

[0001] The present application relates to the technical field of grinding machine production equipment, and more specifically, to a grinding machine A-axis component assembly test bench. Background Art

[0002] The A-axis assembly is an indispensable and important component of the CNC grinding machine. It ensures the accuracy and efficiency of workpiece processing by precisely controlling the grinding angle. Figure 1 The A-axis assembly 9 is generally composed of a polygonal body 91, a drive shaft 92, a bearing 93, a grinding head assembly 94 and other parts. The drive shaft 92 is located in the center of the polygonal body 91 and is rotatably connected to the polygonal body 91. The two ends of the drive shaft 92 respectively pass through the two ends of the polygonal body 91. There are two bearings 93, which are respectively installed at both ends of the drive shaft 92 and their axis centers are on the same straight line as the axis centers of the drive shaft 92. The grinding head assembly 94 is the grinding and cutting execution unit of the grinder and is the core key component of the grinder. Multiple grinding head assemblies 94 are provided on each surface of the polygonal body 91. The multiple grinding head assemblies 94 on each surface are evenly arranged along the length direction of the polygonal body 91 and work simultaneously. The grinding head assemblies 94 on multiple surfaces are respectively equipped with consumables of different specifications. According to the process requirements, the program automatically switches so that the grinding head assemblies 94 on multiple surfaces perform different processing on the workpiece. The grinding head assembly 94 usually includes a mounting seat 941, a grinding disc 942 and a driving member 943 (not shown in the figure). The mounting seat 941 is connected to the polygonal body 91, and a main shaft is rotatably set on it. The main shaft and the driving shaft 92 are in a vertical position relationship. The driving member 943 is inside the polygonal body 91 and is connected to the main shaft to drive the main shaft to rotate to realize the rotation of the grinding disc 942 to grind the workpiece. In the assembly of the A-axis assembly 9, the grinding disc 942 on the same surface of the polygonal body 91 is required to be strictly parallel to the axis of the driving shaft 92, and the parallelism is within 0.03mm. The coplanarity of multiple grinding discs 942 is within 0.03mm, and the spacing difference between the grinding discs 942 is within 0.05.

[0003] Currently, the industry generally uses a method where multiple parts or components are assembled one by one during final assembly to form a complete A-axis assembly 9. This assembly method has been repeatedly adjusted, even with multiple replacements of parts for random adaptation, and can barely meet the requirements. However, it has many drawbacks as described below.

[0004] 1. The A-axis assembly is composed of multiple parts, and each part or assembly has deviations. The deviations measured on the entire machine after assembly are often large due to cumulative reasons. Troubleshooting the causes and making adjustments are time-consuming and labor-intensive, and require extremely high operator experience.

[0005] 2. The entire machine is composed of many parts. This method of assembling individual parts or small components into the entire machine is inefficient, with long assembly cycles and high assembly and commissioning costs due to the sequential assembly process, limited assembly space, and the inability to ensure ergonomic workstations. This method cannot meet the short delivery and low-cost requirements of many customers.

[0006] 3. The A-axis assembly has multiple precision requirements. Components assembled in this manner can only be measured and adjusted on the complete machine. Due to space constraints and measurement equipment limitations, simple, less reliable measurement methods are often the only options. Some challenging items are measured indirectly or not at all. The machine's accuracy is then inferred from the product's accuracy during formal processing to determine if the machining accuracy meets the requirements. With the development of society and the intensification of competition, the demand for product quality is constantly increasing. This increasing demand for product quality is compounded by the increasing difficulty or inability to improve the precision of production equipment. Improving equipment precision has become both urgent and practical. Utility Model Content

[0007] In order to solve the defect of the related art that the A-axis assembly is assembled on the whole machine, the present application provides a grinding machine A-axis assembly assembly test bench.

[0008] The top surface of the support platform is parallel to the horizontal ground and the length direction of the top surface of the support platform is parallel to the X-axis. The top surface of the support platform is equipped with a locking support mechanism for locking the bearing of the A-axis assembly and making the axis of the drive shaft of the A-axis assembly parallel to the top surface of the support platform and parallel to the X-axis. The locking support mechanism is connected with a locking mechanism for fixing and unlocking the bearing of the A-axis assembly and the drive shaft at any position in the rotation direction of the drive shaft. A three-axis movable frame is also installed on the top surface of the support platform, and the three-axis movable frame is connected with a micrometer and is used to support the micrometer to move precisely along the X, Y and Z axes. The measuring head of the micrometer is parallel to the Y axis. A grating ruler is provided on one side of the frame and the support platform in the length direction. The light emitted by the grating ruler is parallel to the X axis and is at the installation position of the grinding disc of the A-axis assembly. A precision right-angle ruler is movably placed on the top surface of the support platform.

[0009] The movable support seat is slidably connected to the support seat slide rail, and the movable support seat is provided with a first locking member for locking or unlocking the movable support seat and the support seat slide rail in the length direction of the support seat slide rail. The fixed support seat and the movable support seat are both provided with V-shaped grooves that penetrate through their own thickness and through their top surfaces. The two V-shaped grooves are respectively used for the bearings of the A-axis assembly to penetrate and be supported, and the two V-shaped grooves are aligned in a direction parallel to the X-axis and the two V-grooves are equal in size. The top surfaces of the fixed support seat and the movable support seat are both fixed with a pressure plate by bolts, and the bearings of the A-axis assembly are pressed by the pressure plate.

[0010] Preferably, the locking mechanism includes a rotating disc, a tensioning sleeve, and a movable limiting clamping seat, the tensioning sleeve is fixed to the center of the rotating disc and fixedly connected to the rotating disc, the inner hole of the tensioning sleeve is equal to the diameter of the driving shaft of the A-axis assembly and is for the driving shaft to penetrate, the driving shaft of the A-axis assembly and the tensioning sleeve are fixedly connected by bolts, the movable limiting clamping seat is movably connected to the fixed support seat, and a clamping block is provided on the movable support seat, and a plurality of clamping grooves adapted to the clamping block are evenly arranged on the circumference of the rotating disc, the clamping block is clamped into the clamping groove by being movable in the direction of the rotating disc, and a spring is provided on the movable limiting clamping seat, and the end of the spring away from the movable limiting seat is connected to the fixed support seat and pulls the movable limiting seat in the direction of the rotating disc.

[0011] Preferably, the three-axis movable frame includes an X-axis slide rail, a first mounting seat, a Y-axis slide rail, a second mounting seat, a Z-axis slide rail, a third mounting seat, and an X-axis sliding block. The X-axis slide rail is parallel to the X-axis and its length is equal to the length of the support table and its two ends are flush with the two end surfaces of the support table respectively. The first mounting seat and the X-axis sliding block are both slidably connected to the X-axis slide rail. An X-axis fine-tuning screw parallel to the X-axis is rotatably provided on the X-axis sliding block. The X-axis fine-tuning screw is threadedly connected to the first mounting seat. The Y-axis slide rail is fixed to the first The Z-axis guide rail is fixed on the second mounting seat and parallel to the Z-axis. The third mounting seat is slidably connected to the Z-axis guide rail and a Z-axis fine-tuning screw parallel to the Z-axis is rotatably provided on the second mounting seat. The Z-axis fine-tuning screw is threadedly connected to the third mounting seat. The dial indicator is fixed on the third mounting seat.

[0012] The beneficial technical effects of the present application are as follows: by reasonably setting the height of the frame, support platform and locking support mechanism, the A-axis assembly is supported to a height that meets ergonomic requirements, which is convenient for side measurement and assembly; the locking mechanism is used to release the locking of the drive shaft of the A-axis assembly so that the drive shaft rotates around the bearing and drives the polygonal body to rotate so that one face of the polygonal body is perpendicular to the top surface of the support platform, and a precision right-angle ruler is used to measure its verticality; when one mounting surface of the polygonal body is perpendicular to the support platform, the driving shaft is locked by the locking mechanism; on the basis that one face of the polygonal body is perpendicular to the top surface of the support platform, the micrometer is precisely moved by the three-axis moving frame and moved to the position of a grinding head assembly on a face perpendicular to the polygonal body and the top surface of the support platform; by locking the position of the micrometer in the Y-axis direction and the measuring head of the micrometer contacts the grinding disc at this position, the micrometer moves on the X and Z axes of the grinding disc to measure the parallelism of a single grinding disc and the center line of the drive shaft, and then the micrometer is used along the X-axis The coplanarity of multiple grinding discs on one face of the polygonal body is measured by moving in the direction of the axis. The installation of each grinding head assembly is carried out on the test bench. First, a grinding head assembly is installed, and the parallelism of the grinding disc of the grinding head assembly with the axis of the drive shaft and the spacing with the polygonal body are within the required range. Then, a grating ruler is used to measure the spacing between the grinding disc and the grating ruler to position the grinding disc in the length direction of the polygonal body. Then, other grinding head assemblies on the same face of the polygonal body are installed. After each grinding head assembly is installed, a grating ruler is used to measure the spacing between the grinding disc and the grating ruler. The spacing between two adjacent grinding discs is measured according to the difference in the distance between the multiple grinding discs and the grating ruler. Finally, the coplanarity of the grinding head is measured by a micrometer. The grinding head assemblies on other faces of the polygonal body are installed in the same way. The assembly of the A-axis assembly is completed on the test bench, and the qualified A-axis assembly is assembled into the whole machine as a whole. The assembly of the A-axis assembly and the assembly of the whole machine can be carried out in parallel, and the assembly cycle of the whole machine is shorter. Assembling the A-axis on the assembly test platform is not limited by the space of the entire machine, which is more convenient, faster, and has lower assembly costs. Assembling the A-axis on the test bench is not limited by the space of the entire machine, and test adjustments are simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the A-axis assembly in the background technology.

[0014] Figure 2 This is a schematic diagram of the overall structure of a grinding machine A-axis component assembly test bench of this embodiment.

[0015] Figure 3 for Figure 2 Enlarged view of position A in the middle.

[0016] Figure 4 Schematic diagram of the locking mechanism of this embodiment.

[0017] Reference numerals: 1, frame; 2, support platform; 3, locking support mechanism; 31, fixed support base; 311, pressure plate; 312, vertical slide rail; 32, movable support base; 321, first locking member; 322, V-shaped groove; 33, support base slide rail; 4, locking mechanism; 41, rotating disk; 411, slot; 42, tensioning sleeve; 43, movable limit clamping base; 431, clamping block; 432, spring; 5, three-axis movable frame; 51, X-axis slide rail; 52, first mounting base; 521. Y-axis fine-tuning screw; 53. Y-axis slide rail; 54. Second mounting seat; 541. Z-axis fine-tuning screw; 55. Z-axis slide rail; 56. Third mounting seat; 57. X-axis sliding block; 571. X-axis fine-tuning screw; 58. Second locking piece; 6. Micrometer; 7. Grating scale; 8. Precision square; 9. A-axis assembly; 91. Polygonal body; 92. Drive shaft; 93. Bearing; 94. Grinding head assembly; 941. Mounting seat; 942. Grinding disc; 943. Drive member. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0019] Reference Figure 2 and Figure 3, a grinding machine A-axis assembly test bench, including a frame 1, the frame 1 is a box structure and a plurality of legs are provided at the bottom of the box. The interior of the box is hollow for placing commonly used accessories and assembly tools. A support platform 2 is fixed on the top surface of the box. The support platform 2 is made of marble cutting and grinding. The marble has a high density and can withstand a large load without being easily deformed. The marble has a hard texture, which helps to reduce the influence of external vibration and is not easy to wear. It is a better installation platform for precision equipment. The top surface of the support platform 2 is parallel to the horizontal ground and the length direction of the top surface of the support platform 2 is parallel to the X-axis. The top surface of the support platform 2 is installed with a locking support mechanism 3 for locking the bearing of the A-axis assembly and making the axis of the drive shaft of the A-axis assembly parallel to the top surface of the support platform 2 and parallel to the X-axis. The locking support mechanism 3 is connected with a locking mechanism 4 for fixing the bearing of the A-axis assembly and the drive shaft at any position in the rotation direction of the drive shaft and realizing unlocking. The top surface of the support platform 2 A three-axis movable frame 5 is also installed. The three-axis movable frame 5 is connected to a micrometer 6 and is used to support the micrometer 6 for precise movement along the X, Y and Z axes. The measuring head of the micrometer 6 is parallel to the Y axis. The micrometer 6 is used to measure the parallelism of the grinding disc of the grinding head assembly in the A-axis assembly and the drive shaft and the coplanarity of the grinding discs on the same surface of the polygonal body. A grating ruler 7 is provided on one side of the length direction of the frame 1 and the support table 2. The light emitted by the grating ruler 7 is parallel to the X axis and is in the installation position of the grinding disc of the A-axis assembly. The distance between multiple grinding discs and the grating ruler 7 on the same surface of the polygonal body is measured by the grating ruler 7, and the spacing between the grinding discs is measured by the difference in distance. A precision right-angle ruler 8 is movably placed on the top surface of the support table 2. The precision right-angle ruler 8 has one right-angle side abutting the top surface of the support table 2 and the other right-angle side abutting the mounting surface of the polygonal body to measure the verticality of the mounting surface of the polygonal body and the top surface of the support table 2.

[0020] Reference Figure 2The locking support mechanism 3 includes a fixed support seat 31, a movable support seat 32, and a support seat slide rail 33. The fixed support seat 31 and the movable support seat 32 are also made of marble cutting and grinding. The fixed support seat 31 is located on one side of the length direction of the support platform 2 and is fixedly connected to the support platform 2. The support seat slide rail 33 is fixed to the top surface of the support platform 2 and is parallel to the X-axis. The movable support seat 32 is slidably connected to the support seat slide rail 33 to obtain support for its sliding by the support seat slide rail 33. The sliding of the movable support seat 32 can reduce the distance between the movable support seat 32 and the fixed support seat 31 and expand the movable support seat. The spacing between the support seat 32 and the fixed support seat 31 is achieved by matching A-axis assemblies of different sizes. A first locking member 321 (not shown in the figure) is provided on the movable support seat 32. The first locking member 321 is a bolt. A threaded hole connecting the support seat slide rail 33 is provided on the movable seat, and the bolt is screwed into the threaded hole. A number of limiting holes are evenly arranged in the length direction of the support seat slide rail 33. By twisting the bolt so that the bolt is stuck in the limiting hole, the support seat slide rail 33 and the movable support seat 32 are locked. The support seat slide rail 33 and the movable support seat 32 are unlocked by twisting out the bolt. The fixed support seat 31 and the movable support seat 32 are both provided with a V-shaped groove 322 that penetrates the thickness of the fixed support seat 31 and the top surface thereof. The two V-shaped grooves 322 are aligned in a direction parallel to the X-axis and the two V-shaped grooves 322 are equal in size. By respectively inserting the two bearings on the drive shaft of the A-axis assembly into the two V-shaped grooves 322, the two bearings are supported by the movable support seat 32 and the fixed support seat 31 respectively. The two V-shaped grooves 322 are aligned in the X-axis direction and the coplanarity of the inner walls of the two V-shaped grooves 322 is set within 0.01mm, which is effective. When the two bearings are respectively inserted into the two V-grooves 322 and supported, the drive shaft of the A-axis assembly is parallel to the X-axis. The top surfaces of the fixed support seat 31 and the movable support seat 32 are fixed with a pressure plate 311 by bolts. The pressure plate 311 is used to press the bearings of the A-axis assembly to achieve multi-bearing locking, so that the bearings are not easily rotated or deviated in the V-grooves 322. The characteristics of the V-grooves 322 determine that the bearings are not affected by the size and angle deviation of the V-grooves 322 in the Y direction, so that the drive shaft is not easily deviated relative to the X-axis, which is conducive to accurate measurement results.

[0021] Reference Figure 2 and Figure 4The locking mechanism 4 includes a rotating disc 41, a tensioning sleeve 42, and a movable limiting clamping seat 43. The tensioning sleeve 42 is fixed to the center of the rotating disc 41 and is fixedly connected to the rotating disc 41. The inner hole of the tensioning sleeve 42 is equal to the diameter of the driving shaft of the A-axis assembly and is provided for the driving shaft to penetrate. The driving shaft of the A-axis assembly is fixedly connected to the tensioning sleeve 42 by bolts. A vertical slide rail 312 is provided on the side of the fixed support seat 31 away from the movable support seat 32. The vertical slide rail 312 is parallel to the Z axis and is located below the V-groove 322. The movable limiting clamping seat 43 is slidably connected to the vertical slide rail 312 to realize the lifting and lowering movement of the movable limiting clamping seat 43. A card block 431 is provided on the top of the movable limiting clamping seat 43 and a spring 432 is provided on the movable limiting clamping seat 43. A plurality of card slots 411 adapted to the card block 431 are evenly arranged on the circumference of the rotating disc 41. When the movable limiting clamping seat 43 rises, the card block When the other mounting surface of the polygonal body needs to be perpendicular to the top surface of the support platform 2, the movable limit seat 43 is pressed down to disengage the block 431 from the slot 411, and then the rotating disk 41 is rotated to drive the drive shaft of the A-axis assembly to rotate, thereby limiting the rotation of the drive shaft of the A-axis assembly.

[0022] Reference Figure 2 and Figure 3The three-axis movable frame 5 includes an X-axis slide rail 51, a first mounting seat 52, a Y-axis slide rail 53, a second mounting seat 54, a Z-axis slide rail 55, a third mounting seat 56, and an X-axis sliding block 57. The X-axis slide rail 51 is parallel to the X-axis and its length is equal to the length of the support table 2 and its two end surfaces are flush with the two end surfaces of the support table 2 respectively. The first mounting seat 52 and the X-axis sliding block 57 are both slidably connected to the X-axis slide rail 51. An X-axis fine-tuning screw 571 parallel to the X-axis is rotatably provided on the X-axis sliding block 57. The X-axis fine-tuning screw 571 is threadedly connected to the first mounting seat 52. The Y-axis slide rail 53 is fixed on the first mounting seat 52 and parallel to the Y-axis. The second mounting seat 54 is slidably connected to the Y-axis slide rail 53. The Y-axis fine-tuning screw 521 is parallel to the Y-axis, and the Y-axis fine-tuning screw 521 is threadedly connected to the second mounting seat 54. The Z-axis slide rail 55 is fixed on the second mounting seat and parallel to the Z-axis. The third mounting seat 56 is slidably connected to the Z-axis slide rail 55 and the second mounting seat 54 is rotatably provided with a Z-axis fine-tuning screw 541 parallel to the Z-axis. The Z-axis fine-tuning screw 541 is threadedly connected to the third mounting seat 56. The dial indicator 6 is fixed to the third mounting seat 56. The X-axis sliding block 57, the second mounting seat 54, and the third mounting seat 56 are all provided with a second locking piece 58. The X-axis sliding block 57 is fixed to the X-axis slide rail 51 by the second locking piece 58 provided on the X-axis sliding block, and the second locking piece 58 on the second mounting seat 54 is used to realize the second The mounting seat 54 is fixed to the first mounting seat 52, and the third mounting seat 56 is fixed to the second mounting seat 54 by the second locking member 58 on the third mounting seat 56. The three second locking members 58 are all bolts. The X-axis sliding seat is provided with a threaded hole communicating with the X-axis slide rail 51. The bolt is threadedly connected to the threaded hole. By rotating the bolt, the bolt abuts the X-axis slide rail 51 to achieve the X-axis sliding seat and the X-axis slide rail 51 to be fixed by friction. The second mounting seat 54 is provided with a threaded hole communicating with the first mounting seat 52. The bolt is threadedly connected to the threaded hole. By rotating the bolt abuts the first mounting seat 52, the first mounting seat 52 and the second mounting seat 54 are fixed by friction. The third mounting seat 56 is provided with a threaded hole connected to the second mounting seat 54 The threaded hole is connected to the threaded hole, and the bolt is threadedly connected to the threaded hole. By rotating the bolt to abut the second mounting seat 54, the second mounting seat 54 and the third mounting seat 56 are fixed by friction. The first mounting seat 52 is supported by the X-axis slide rail 51 to move and the dial indicator 6 is moved to each position in the length direction of the polygonal body of the A-axis assembly to realize the alignment of the dial indicator 6 with multiple grinding discs on the mounting surface perpendicular to the polygonal body and the top surface of the support platform 2. When aligning one grinding disc, the second mounting seat 54 is pushed to move in the direction of the grinding disc so that the measuring head of the dial indicator 6 contacts the grinding surface of the grinding head, and the second mounting seat 54 is fixed to the first mounting seat 52 by the second locking member 58 provided on the second mounting seat 54 so that the measuring head of the dial indicator 6 remains in contact with the grinding disc.By rotating the X-axis fine-tuning screw 571 and the Z-axis fine-tuning screw 541, the dial indicator 6 is moved along the X-axis and Z-axis directions to measure the parallelism between the grinding disc and the drive shaft axis. The second locking member 58 provided on the third mounting seat 56 is then used to fix the third mounting seat 56 to the second mounting seat 54, thereby fixing the dial indicator 6 in the Z-axis direction. By pushing the first mounting seat 52 to slide along the X-axis direction, the dial indicator 6 is brought into contact with the multiple grinding discs on the polygonal body mounting surface to measure the coplanarity of the multiple grinding discs on the polygonal body mounting surface.

[0023] The implementation principle of the grinding machine A-axis component assembly test bench of the present application is: the accessories on the test bench are all made according to level 6 manufacturing precision, and are assembled after passing the inspection. The assembly process does not need to pursue efficiency, and higher precision is obtained through repeated adjustment and adaptation. The support platform 2, the movable support seat 32, and the fixed support seat 31 are made of marble material with excellent stability and have stronger support stability, so that the measurement accuracy of the test bench is high. By reasonably setting the height of the frame 1, support platform 2 and locking support mechanism 3, the A-axis assembly is supported to a height that meets ergonomic requirements for easy measurement and assembly. The locking mechanism 4 is used to release the locking of the drive shaft of the A-axis assembly so that the drive shaft rotates around the bearing, driving the polygonal body to rotate so that one surface of the polygonal body is perpendicular to the top surface of the support platform 2, and a precision right-angle ruler 8 is used to measure its verticality. When one mounting surface of the polygonal body is perpendicular to the support platform 2, the drive shaft is locked by the locking mechanism 4. On the basis that one surface of the polygonal body is perpendicular to the top surface of the support platform 2, the micrometer 6 is precisely moved by the three-axis moving frame 5 and moved by the micrometer 6 to the position of a grinding head assembly on a surface perpendicular to the top surface of the polygonal body and the support platform 2. By locking the position of the micrometer 6 in the Y-axis direction and the measuring head of the micrometer 6 contacts the grinding disc at this position, the micrometer 6 moves on the X and Z axes of the grinding disc to measure the parallelism of a single grinding disc and the center line of the drive shaft, and then the micrometer 6 is moved along the X-axis direction. To achieve the measurement of the coplanarity of multiple grinding discs on one face of the polygonal body, the installation of each grinding head assembly is carried out on the test bench. First, a grinding head assembly is installed, and the micrometer 6 is used to measure the parallelism of the grinding disc of the grinding head assembly with the axis of the drive shaft and the spacing with the polygonal body are within the required range. Then, the grating ruler 7 is used to measure the spacing between the grinding disc and the grating ruler 7 to position the grinding disc in the length direction of the polygonal body. Then, other grinding head assemblies on the same face of the polygonal body are installed. After each grinding head assembly is installed, the grating ruler 7 is used to measure the spacing between the grinding disc and the grating ruler 7. The spacing between two adjacent grinding discs is measured according to the difference in the distance between the multiple grinding discs and the grating ruler 7. Finally, the coplanarity of the grinding head is measured by the micrometer 6. The grinding head assemblies on other faces of the polygonal body are installed in the same way. By completing the assembly of the A-axis assembly on the test bench, the qualified A-axis assembly is assembled into the whole machine as a whole. The assembly of the A-axis assembly and the assembly of the whole machine can be carried out in parallel, and the assembly cycle of the whole machine is shorter. Assembling the A-axis on the assembly test platform is not limited by the space of the entire machine, which is more convenient, faster, and has lower assembly costs. Assembling the A-axis on the test bench is not limited by the space of the entire machine, and test adjustments are simpler and more convenient.

[0024] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A grinding machine A-axis assembly test bench, characterized by: The cam is mounted on a vertical axis and has a top surface that is parallel to the horizontal ground and a longitudinal direction of the top surface of the cam is parallel to the X-axis. A locking support mechanism is installed on the top surface of the cam for locking the bearing of the A-axis assembly and making the axis of the drive shaft of the A-axis assembly parallel to the top surface of the cam and parallel to the X-axis. The locking support mechanism is connected with a locking mechanism for fixing and unlocking the bearing of the A-axis assembly and the drive shaft at any position in the rotation direction of the drive shaft. A three-axis movable frame is also installed on the top surface of the cam, and the three-axis movable frame is connected with a micrometer and is used to support the micrometer for precise movement along the X, Y and Z axes. The measuring head of the micrometer is parallel to the Y axis. A grating ruler is provided on one side of the frame and the length direction of the support platform. The light emitted by the grating ruler is parallel to the X-axis and is at the grinding disc installation position for aligning the A-axis assembly. A precision right-angle ruler is movably placed on the top surface of the cam.

2. The grinding machine A-axis assembly test bench according to claim 1, characterized in that: The cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame, wherein the cam is fixedly mounted on the support frame, wherein the cam is fixedly mounted on the support frame, wherein the cam is fixedly mounted on the support frame, wherein the cam is fixedly mounted on the support frame, wherein the cam is fixedly mounted 3. The grinding machine A-axis assembly test bench according to claim 2, characterized in that: The locking mechanism includes a rotating disc, a tensioning sleeve, and a movable limiting clamping seat. The tensioning sleeve is fixed to the center of the rotating disc and fixedly connected to the rotating disc. The inner hole of the tensioning sleeve is equal to the diameter of the driving shaft of the A-axis assembly and is for the driving shaft to penetrate. The driving shaft of the A-axis assembly and the tensioning sleeve are fixedly connected by bolts. The movable limiting clamping seat is movably connected to the fixed support seat, and a clamping block is provided on the movable support seat. A plurality of clamping grooves adapted to the clamping block are evenly arranged on the circumference of the rotating disc. The clamping block is clamped into the clamping groove by moving toward the direction of the rotating disc. A spring is provided on the movable limiting clamping seat. The end of the spring away from the movable limiting seat is connected to the fixed support seat and pulls the movable limiting seat in the direction of the rotating disc.

4. The grinding machine A-axis assembly test bench according to claim 1, characterized in that: The three-axis mobile frame includes an X-axis slide rail, a first mounting seat, a Y-axis slide rail, a second mounting seat, a Z-axis slide rail, a third mounting seat, and an X-axis sliding block. The X-axis slide rail is parallel to the X-axis and its length is equal to the length of the support table and its two ends are flush with the two end surfaces of the support table respectively. The first mounting seat and the X-axis sliding block are both slidably connected to the X-axis slide rail. An X-axis fine-tuning screw parallel to the X-axis is rotatably provided on the X-axis sliding block. The X-axis fine-tuning screw is threadedly connected to the first mounting seat. The Y-axis slide rail is fixed to the first mounting seat. The Z-axis slide rail is fixed on the second mounting seat and parallel to the Z-axis. The third mounting seat is slidably connected to the Z-axis slide rail and a Z-axis fine-tuning screw parallel to the Z-axis is rotatably provided on the second mounting seat. The Z-axis fine-tuning screw is threadedly connected to the third mounting seat. The micrometer is fixed on the third mounting seat.

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