Tool setting device of forming wheel gear grinding machine

Abstract

The utility model discloses a tool setting device for a forming wheel gear grinding machine, and relates to the field of gear grinding machines, the tool setting device comprises a base, a sliding rod is movably mounted in the middle of the interior of the base, a first servo motor is fixed to the top of the base through a connecting rod, and a rotating shaft is fixed to the power output end of the first servo motor; and a second servo motor is fixed at one end of the rotating shaft. According to the device, a second servo motor drives a threaded rod to rotate, so that two threaded sleeve blocks move in opposite directions in a rotating shaft, then the positions of two movable tooth grinding cutters are driven to be changed, a second sliding block slides in a second sliding groove, and movement of the threaded sleeve blocks is not affected; and meanwhile, a second sliding block and a second sliding groove are matched to prevent the threaded sleeve block from rotating along with rotation of the threaded rod, the distance between the movable gear grinding cutter and the fixed gear grinding cutter is judged through a scale groove, the distance is made to be matched with the distance of a gear with the to-be-ground gear, and therefore the effect that the position of the gear grinding cutter can be rapidly adjusted according to the size of the gear needing to be ground is achieved.

Description

Technical Field

[0001] This application relates to the field of gear grinding machines, and more particularly to a tool setting device for a forming wheel gear grinding machine. Background Technology

[0002] CNC gear grinding machines use grinding wheels as abrasives to machine the tooth surfaces of cylindrical gears or certain gear cutting tools. They are primarily used to eliminate deformation after heat treatment and improve gear precision. Improving the tool setting accuracy and efficiency of gear grinding machines is crucial for enhancing gear machining accuracy and efficiency. Automatic tool setting on gear grinding machines allows for adjustments without stopping the machine, offering advantages such as simple operation, high efficiency, and high tool setting accuracy. The main idea behind automatic tool setting is that the CNC system automatically acquires and records the positions of the tooth groove boundaries on both sides of the workpiece, then calculates the accurate midpoint position of the tooth groove, i.e., the starting point of the feed machining. Finally, the servo system issues commands to determine the grinding wheel position. Therefore, how to quickly and accurately acquire the tooth groove boundary position is the key to automatic precision tool setting technology.

[0003] When grinding gears, existing gear grinding machines require selecting the appropriate grinding cutter model based on the gear being ground. After changing to a gear of a different size, the grinding cutter also needs to be replaced. This replacement requires using a screwdriver to disassemble the original grinding cutter and then installing the new matching grinding cutter, which is quite inconvenient. In addition, when setting the cutting tool, existing gear grinding machines require height adjustment after installing gears of different thicknesses to ensure that the grinding cutter is located in the middle of the gear. Utility Model Content

[0004] To address the inconvenience of needing to replace the grinding cutter after changing gears of different sizes, which requires disassembling the original grinding cutter with a screwdriver and then installing the new matching grinding cutter with a screwdriver, this application provides a tool setting device for a forming wheel grinding machine.

[0005] The tool setting device for a forming wheel gear grinding machine provided in this application adopts the following technical solution: it includes a base, a slide rod is movably installed in the middle of the base, a first servo motor is fixed to the top of the base through a connecting rod, a rotating shaft is fixed to the power output end of the first servo motor, a second servo motor is fixed to one end of the rotating shaft, a fixed gear grinding cutter is fixed in the middle of the rotating shaft, a second threaded rod is fixed to the power output end of the second servo motor, the second threaded rod is located inside the rotating shaft, and a threaded sleeve block is slidably connected inside the rotating shaft, the threaded sleeve block and the second threaded rod are threadedly connected, a second slider is fixed to the outer wall of the threaded sleeve block, a movable gear grinding cutter is fixed to the top of the second slider block, a support rod is fixed to the top of the slide rod, and a connecting plate is fixed to the top of the support rod.

[0006] By adopting the above technical solution, the gear to be processed is placed in the middle of the connecting plate and then squeezed and limited. The slide rod drives the connecting plate and the limited gear to move towards the fixed grinding cutter.

[0007] Preferably, there are two of each of the threaded sleeve, the second slider, and the movable grinding cutter. The thread directions of the two threaded sleeves are opposite, and the distance between the two movable grinding cutters and the fixed grinding cutter is the same.

[0008] By adopting the above technical solution, the second servo motor drives the threaded rod to rotate, causing the two threaded sleeve blocks to move in opposite directions inside the rotating shaft, thereby changing the position of the two moving grinding cutters.

[0009] Preferably, a second sliding groove is provided through the top of the outer wall of the rotating shaft, and the second slider is slidably connected to the second sliding groove.

[0010] By adopting the above technical solution, the second slider slides inside the second groove without affecting the movement of the threaded sleeve block. At the same time, the second slider and the second groove cooperate to prevent the threaded sleeve block from rotating together with the threaded rod.

[0011] Preferably, the top of the rotating shaft is provided with a scale groove, and multiple scale grooves are provided, which are arranged horizontally at equal intervals.

[0012] By adopting the above technical solution, the distance between the moving grinding cutter and the fixed grinding cutter is determined by the scale groove, so that the distance is adapted to the gear spacing to be ground.

[0013] Preferably, the middle part of the connecting plate and the middle part of the rotating shaft are located on the same horizontal plane, and a guide rail is fixed to the middle part of the connecting plate near the rotating shaft. Both ends of the inner wall of the guide rail are slidably connected to a first slider.

[0014] By adopting the above technical solution, the first slider can slide up and down inside the guide rail to squeeze and limit the gear to be processed, and at the same time, the middle part of the gear after being limited is aligned with the middle part of the rotating shaft.

[0015] Preferably, a micro servo motor is fixed in the middle of the support rod, and a first threaded rod is fixed at the power output end of the micro servo motor. The first threaded rod is threadedly connected to the two first sliders, and the thread directions of the two first sliders are opposite. A connecting block is fixed on one side of each of the two first sliders, and a pressing block is rotatably connected to the opposite side of each of the two connecting blocks. The pressing block is shaped like a frustum.

[0016] By adopting the above technical solution, when fixing the gear, the gear is placed on the bottom extrusion block, and then the micro servo motor is controlled to rotate, which drives the first threaded rod to rotate, so that the two first sliders move towards the center at the same time.

[0017] Preferably, the base has a first sliding groove in the middle, the sliding rod is slidably connected to the first sliding groove, and the inner wall of the base is provided with a hydraulic rod to control the sliding rod to slide inside the first sliding groove.

[0018] By adopting the above technical solution, after the gear is positioned, the drive mechanism drives the slide rod to slide inside the first slide groove, moving the positioned gear to the side of the fixed grinding cutter.

[0019] In summary, this application includes at least the following beneficial technical effects:

[0020] 1. This application uses a second servo motor to drive the threaded rod to rotate, causing the two threaded sleeve blocks to move in opposite directions inside the rotating shaft, thereby changing the position of the two movable grinding cutters. The second slider slides inside the second slide groove without affecting the movement of the threaded sleeve blocks. At the same time, the second slider and the second slide groove cooperate to prevent the threaded sleeve blocks from rotating with the threaded rod. The distance between the movable grinding cutter and the fixed grinding cutter is determined by the scale groove, so that the distance is adapted to the gear spacing to be ground, thereby achieving the effect of quickly adjusting the position of the grinding cutter according to the gear size to be ground.

[0021] 2. This application places the gear on the bottom extrusion block, then controls the micro servo motor to rotate, driving the first threaded rod to rotate, so that the two first sliders move towards the center at the same time, limiting the gear and aligning the center of the gear with the center of the rotating shaft after the gear is limited, thus completing the tool setting, thereby achieving the effect that the center of the gear is aligned with the grinding cutter after positioning. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a tool setting device for a forming wheel gear grinding machine according to an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure at the connecting plate in an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the first servo motor and the second servo motor in the embodiments of this application;

[0025] Figure 4 This is a schematic diagram of the cross-sectional structure of the first rotating shaft in an embodiment of this application;

[0026] Reference numerals in the attached drawings: 1. Base; 2. First slide groove; 3. Slide rod; 4. Support rod; 5. Micro servo motor; 6. First threaded rod; 7. Connecting plate; 8. Guide rail; 9. First slider; 10. Connecting block; 11. Pressing block; 13. First servo motor; 14. Rotating shaft; 15. Second servo motor; 16. Second slide groove; 17. Scale groove; 18. Second threaded rod; 19. Threaded sleeve block; 20. Second slider; 21. Fixed grinding cutter; 22. Moving grinding cutter. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0028] This application discloses a tool setting device for a forming wheel gear grinding machine, including a base 1. A slide rod 3 is movably installed in the center of the base 1. A first servo motor 13 is fixed to the top of the base 1 via a connecting rod. A rotating shaft 14 is fixed to the power output end of the first servo motor 13. A second servo motor 15 is fixed to one end of the rotating shaft 14. A fixed grinding cutter 21 is fixed in the middle of the rotating shaft 14. A second threaded rod 18 is fixed to the power output end of the second servo motor 15. The second threaded rod 18 is located inside the rotating shaft 14 and performs gear grinding by rotating the first servo motor 13. A threaded sleeve 19 is slidably connected inside the moving shaft 14. The threaded sleeve 19 is threadedly connected to the second threaded rod 18. A second slider 20 is fixed to the outer wall of the threaded sleeve 19. A movable grinding cutter 22 is fixed to the top of the second slider 20. The position of the movable grinding cutter 22 is adjusted by rotating the second servo motor 15. A support rod 4 is fixed to the top of the slide rod 3. A connecting plate 7 is fixed to the top of the support rod 4. By placing the gear to be processed in the middle of the connecting plate 7 and then pressing and limiting it, the slide rod 3 drives the connecting plate 7 and the limited gear to move towards the fixed grinding cutter 21.

[0029] Reference Appendix Figure 3 and 4 The device includes two threaded sleeves 19, two second sliders 20, and two movable grinding cutters 22. The thread directions of the two threaded sleeves 19 are opposite, and the distance between the two movable grinding cutters 22 and the fixed grinding cutter 21 is the same. The threaded rod 18 is rotated by the second servo motor 15, which causes the two threaded sleeves 19 to move in opposite directions inside the rotating shaft 14, thereby changing the position of the two movable grinding cutters 22.

[0030] Reference Appendix Figure 3 and 4The top of the outer wall of the rotating shaft 14 is provided with a second slide groove 16. The second slider 20 is slidably connected to the second slide groove 16. The second slider 20 slides inside the second slide groove 16 without affecting the movement of the threaded sleeve block 19. At the same time, the second slider 20 and the second slide groove 16 cooperate to prevent the threaded sleeve block 19 from rotating together with the threaded rod 18.

[0031] Reference Appendix Figure 3 The rotating shaft 14 has a scale groove 17 on its top. Multiple scale grooves 17 are arranged horizontally at equal intervals. The scale grooves 17 are used to determine the distance between the moving grinding cutter 22 and the fixed grinding cutter 21, so that the distance is adapted to the gear spacing to be ground.

[0032] Reference Appendix Figure 1 The middle part of the connecting plate 7 is on the same horizontal plane as the middle part of the rotating shaft 14, and a guide rail 8 is fixed on the middle part of the connecting plate 7 near the rotating shaft 14. The two ends of the inner wall of the guide rail 8 are slidably connected to the first slider 9, so that the first slider 9 can slide up and down inside the guide rail 8 to squeeze and limit the gear to be processed, and at the same time, make the middle part of the gear after being limited aligned with the middle part of the rotating shaft 14.

[0033] Reference Appendix Figure 2 The support rod 4 has a micro servo motor 5 fixed in the middle. The power output end of the micro servo motor 5 is fixed with a first threaded rod 6. The first threaded rod 6 is threadedly connected to two first sliders 9, and the threads of the two first sliders 9 are opposite. A connecting block 10 is fixed on one side of each of the two first sliders 9. A pressing block 11 is rotatably connected to the opposite side of each of the two connecting blocks 10. The pressing block 11 is set in the shape of a frustum. When fixing the gear, the gear is placed on the pressing block 11 at the bottom, and then the micro servo motor 5 is controlled to rotate, which drives the first threaded rod 6 to rotate, so that the two first sliders 9 move closer to the middle at the same time.

[0034] Reference Appendix Figure 1 The base 1 has a first groove 2 in the middle, the slide rod 3 is slidably connected to the first groove 2, and the inner wall of the base 1 is provided with a drive mechanism to drive the slide rod 3 to slide inside the first groove 2. After the gear is limited, the drive mechanism drives the slide rod 3 to slide inside the first groove 2, moving the limited gear to the side of the fixed grinding cutter 21.

[0035] The implementation principle of the tool setting device for a forming wheel gear grinding machine according to an embodiment of this application is as follows: First, the gear is placed on the bottom extrusion block 11. Then, the micro servo motor 5 is controlled to rotate, driving the first threaded rod 6 to rotate, so that the two first sliders 9 move towards the center at the same time, limiting the gear and aligning the center of the gear with the center of the rotating shaft 14, thus completing the tool setting. Subsequently, the position of the grinding cutter 22 is moved according to the gear model and gear conditions. The second servo motor 15 drives the threaded rod 18 to rotate, causing the two threaded sleeves 19 to move in opposite directions inside the rotating shaft 14, thereby driving the two moving grinding cutters 22. The position is changed, and the second slider 20 slides inside the second slide groove 16 without affecting the movement of the threaded sleeve block 19. At the same time, the second slider 20 and the second slide groove 16 cooperate to prevent the threaded sleeve block 19 from rotating together with the threaded rod 18. The distance between the moving grinding cutter 22 and the fixed grinding cutter 21 is determined by the scale groove 17 so that the distance is adapted to the gear spacing to be ground. Finally, the hydraulic rod drives the slide bar 3 to slide inside the first slide groove 2, moving the gear that has been limited to the side of the fixed grinding cutter 21. At the same time, the first servo motor 13 is started, driving the rotating shaft 14, the fixed grinding cutter 21 and the moving grinding cutter 22 to rotate for grinding.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tool setting device for a gear grinding machine for forming wheels, comprising a base (1), wherein a slide rod (3) is movably mounted in the center of the base (1), characterized in that: The base (1) is fixed with a first servo motor (13) by a connecting rod. The power output end of the first servo motor (13) is fixed with a rotating shaft (14). One end of the rotating shaft (14) is fixed with a second servo motor (15). A fixed grinding cutter (21) is fixed in the middle of the rotating shaft (14). A second threaded rod (18) is fixed in the power output end of the second servo motor (15). The second threaded rod (18) is located inside the rotating shaft (14). A threaded sleeve block (19) is slidably connected inside the rotating shaft (14). The threaded sleeve block (19) and the second threaded rod (18) are connected by a through thread. A second slider (20) is fixed on the outer wall of the threaded sleeve block (19). A movable grinding cutter (22) is fixed on the top of the second slider block (20). A support rod (4) is fixed on the top of the slide rod (3). A connecting plate (7) is fixed on the top of the support rod (4).

2. The tool setting device for a forming wheel gear grinding machine according to claim 1, characterized in that: Two threaded sleeves (19), two second sliders (20), and two movable grinding cutters (22) are provided. The thread directions of the two threaded sleeves (19) are opposite, and the distance between the two movable grinding cutters (22) and the fixed grinding cutter (21) is the same.

3. The tool setting device for a forming wheel gear grinding machine according to claim 2, characterized in that: The top of the outer wall of the rotating shaft (14) is provided with a second sliding groove (16), and the second slider (20) is slidably connected to the second sliding groove (16).

4. The tool setting device for a forming wheel gear grinding machine according to claim 3, characterized in that: The top of the rotating shaft (14) is provided with a scale groove (17), and there are multiple scale grooves (17) arranged horizontally at equal intervals.

5. The tool setting device for a forming wheel gear grinding machine according to claim 1, characterized in that: The middle part of the connecting plate (7) and the middle part of the rotating shaft (14) are located on the same horizontal plane, and a guide rail (8) is fixed on the middle part of the side of the connecting plate (7) close to the rotating shaft (14). The two ends of the inner wall of the guide rail (8) are slidably connected to the first slider (9).

6. The tool setting device for a forming wheel gear grinding machine according to claim 5, characterized in that: A micro servo motor (5) is fixed in the middle of the support rod (4). A first threaded rod (6) is fixed at the power output end of the micro servo motor (5). The first threaded rod (6) is threadedly connected to the two first sliders (9), and the thread directions of the two first sliders (9) are opposite. A connecting block (10) is fixed on one side of each of the two first sliders (9). An extrusion block (11) is rotatably connected to the opposite side of each of the two connecting blocks (10). The extrusion block (11) is set in the shape of a frustum.

7. The tool setting device for a forming wheel gear grinding machine according to claim 6, characterized in that: The base (1) has a first sliding groove (2) in the middle, the sliding rod (3) is slidably connected to the first sliding groove (2), and the inner wall of the base (1) is provided with a hydraulic rod to control the sliding rod (3) to slide inside the first sliding groove (2).

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