Positioning device for improving chamfering precision of gear chamfering machine

Abstract

The invention relates to the technical field of gear chamfering machining, in particular to a positioning device used for improving the chamfering precision of a gear chamfering machine, and provides the positioning device used for improving the chamfering precision of the gear chamfering machine aiming at the problems that an existing chamfering machine is low in positioning precision, and a grinding machine cannot be synchronously linked. An operation table is arranged in the box body, a driving cylinder capable of rotating is arranged in the middle of the operation table, an expanding and positioning mechanism is arranged at the upper end of the driving cylinder, the expanding and positioning mechanism comprises a positioning seat, a plurality of expanding plates are arranged at the upper end of the positioning seat, a threaded rod capable of rotating is arranged in the middle of the positioning seat, and when the threaded rod rotates, the expanding plates can move towards the outer side; when the driving cylinder rotates, the vertical seat and the grinding machine can move towards one side; the expanding and positioning mechanism can conduct self-adaptive expanding and fixing on the gear, deformation and surface damage, caused by uneven clamping force, of the gear are avoided, and meanwhile synchronous linkage of gear rotating machining and grinding machine moving can be achieved through the device.

Description

Technical Field

[0001] This invention relates to the field of gear chamfering technology, and in particular to a positioning device for improving the chamfering accuracy of a gear chamfering machine. Background Technology

[0002] As a core component in the field of mechanical transmission, the machining accuracy of gears directly affects the operational stability, transmission efficiency, and service life of the entire transmission system. Gear chamfering, as one of the key processes in gear machining, significantly impacts the ease of assembly, smooth meshing, and fatigue resistance of the gears due to the dimensional accuracy and angle consistency of the chamfer. During gear chamfering, the positioning accuracy of the gear is one of the core factors determining the chamfering precision. Currently, most gear chamfering machines use traditional clamping structures for positioning, employing mechanical clamps to hold and fix the outer edge or inner hole of the gear. However, these traditional positioning devices have many shortcomings in practical applications: Firstly, controlling the clamping force is difficult. Excessive clamping can cause elastic deformation or surface damage to the gears, while insufficient clamping cannot guarantee the positional stability of the gears during processing. This can easily lead to problems such as chamfering dimension deviations and irregular angles due to slight gear displacement, making it difficult to meet the requirements of high-precision gear processing. Secondly, existing positioning devices can only achieve the function of fixing the gears. The movement of the grinding mechanism often requires a separate drive control module for regulation. The movement and positioning of the grinding machine are independent of the fixed positioning of the gears, lacking an effective synchronous linkage mechanism. This results in low accuracy and delayed response of the grinding machine, affecting chamfering efficiency and potentially further reducing chamfering accuracy due to mismatch between grinding timing and positioning, increasing the risk of processing errors. Furthermore, separately controlling the movement of the grinding machine requires additional control components and transmission structures, making the overall structure of the chamfering machine more complex, increasing manufacturing and maintenance costs, and also increasing the complexity of equipment operation, which is detrimental to improving production efficiency. Therefore, developing a positioning device that can achieve precise gear positioning and synchronous processing with a grinding machine to solve the problems of insufficient positioning accuracy and poor processing synchronization in the existing technology has become an urgent need in the field of gear chamfering equipment. Summary of the Invention

[0003] This invention addresses the problems of low positioning accuracy and inability to synchronize with grinding machines in existing chamfering machines by providing a positioning device for improving the chamfering accuracy of gear chamfering machines. The device has an internal expansion and positioning mechanism that can adaptively expand and fix the gear, effectively avoiding deformation and surface damage caused by uneven clamping force. At the same time, the device can realize the synchronous linkage between gear rotation processing and grinding machine movement, effectively solving the problems mentioned in the background art.

[0004] The technical solution adopted by the present invention to solve the above problems is as follows: A positioning device for improving the chamfering accuracy of a gear chamfering machine includes a housing. An operating table is located inside the housing. A rotatable drive cylinder is located in the center of the operating table. An expansion positioning mechanism is located at the upper end of the drive cylinder. The expansion positioning mechanism includes a positioning seat, with multiple expansion plates at the upper end of the positioning seat. A rotatable threaded rod is located in the center of the positioning seat. When the threaded rod rotates, the multiple expansion plates can move outwards. A stand is also located on one side of the operating table, with a grinding machine located at the upper end of the stand. When the drive cylinder rotates, the stand and the grinding machine can move to one side. A movable grinding machine is located on the other side of the operating table.

[0005] The expansion plates are all slidably connected to the upper surface of the positioning seat. A circular sleeve is threadedly connected to the outer surface of the threaded rod. Multiple evenly distributed short connecting rods are hinged to the outer surface of the circular sleeve. The outer ends of the short connecting rods are all hinged to the corresponding expansion plates.

[0006] The outer surface of the drive cylinder is provided with an outer ring that can move up and down. A connecting rod is fixedly connected to the outer surface of the outer ring. A first guide plate that is fixedly connected to the connecting rod is slidably connected to the upper end of the operating table. The stand is slidably connected to the upper end surface of the operating table. A first sliding pin is provided on the inner wall of the stand. A first inclined groove that cooperates with the first sliding pin is opened on the first guide plate.

[0007] The inner wall of the drive cylinder is slidably connected to a connecting plate, and an inner ring is fixed to the outer side of the connecting plate. The inner ring is rotatably connected to the inner wall of the outer ring. The inner wall of the drive cylinder is also provided with a centrifugal mechanism. When the drive cylinder rotates, the centrifugal mechanism can drive the connecting plate to move downward.

[0008] The centrifugal mechanism includes a sleeve, a four-claw frame fixedly attached to the outer surface of the sleeve, and a first spring that cooperates with the connecting plate on the outer surface of the sleeve. Multiple evenly distributed centrifugal seats are slidably connected to the inner wall of the four-claw frame. Each centrifugal seat has a centrifugal ball at its lower end and a centrifugal rod hinged to its upper end. The upper end of each centrifugal rod is hinged to the lower surface of the connecting plate.

[0009] The upper surface of the connecting plate is fixed with a plurality of long guide rods that are slidably connected to the positioning seat. A square sleeve is fixed to the upper end of the plurality of long guide rods. An inner rod is fixed to the outer end face of the square sleeve. A pressure rod is sleeved on the outer surface of the inner rod. The pressure rods are slidably connected to the inner wall of the corresponding expansion plate.

[0010] The front of the box is equipped with a side door that can be flipped up and down, and the top of the box is equipped with a top cover. An observation window is opened on the inner wall of the top cover. When the side door is flipped up, the operating table can be flipped down.

[0011] A spur gear is rotatably connected to the inner wall of one side of the box. A rack that is slidably connected to the box is meshed at the upper end of the spur gear. A first connecting rod is hinged to the front end of the rack. The front end of the first connecting rod is hinged to the side door. A toothed lock plate that cooperates with the spur gear is also provided on one end face of the box.

[0012] A second guide plate is fixedly connected to one end face of the toothed locking plate, and a sleeve plate is fixedly connected to one end face of the box body. A small slider is slidably connected to the inner wall of the sleeve plate. A second sliding pin is fixedly connected to the upper surface of the small slider. A second inclined groove that cooperates with the second sliding pin is opened on the inner wall of the second guide plate. A second spring that cooperates with the small slider is also provided on the inner wall of the sleeve plate. An L-shaped hanging plate is fixedly connected to the lower surface of the small slider. A movable pin that cooperates with the L-shaped hanging plate is provided on one end face of the stand.

[0013] A disc cam is coaxially fixed to one side of the spur gear, and a U-shaped seat is fixed to one end face of the housing. A square slider is slidably connected to the inner wall of the U-shaped seat, and a drive pin is fixed to the inner wall of the square slider. The disc cam is provided with a small arc groove, a variable diameter groove and a wave groove that cooperate with the drive pin. A second connecting rod is rotatably connected to the outer surface of the drive pin, and the lower end of the second connecting rod is hinged to the upper surface of the operating table.

[0014] Compared with the prior art, the present invention has the following advantages: In use, the gear to be processed is placed on the positioning seat. When the threaded rod rotates, it drives the expansion plate to move outward synchronously, thereby expanding and positioning the gear and fixing it in place. This ensures the gear is precisely fixed in the designated position. When grinding is required, the first motor is started to control the rotation of the drive cylinder. When the drive cylinder rotates, it moves the stand and the grinder to one side to the designated position, allowing the grinder to contact the gear for real-time grinding. The internal expansion and positioning mechanism of the device can adaptively expand and fix the gear. Compared with traditional clamping positioning, expansion positioning ensures uniform force on the gear, effectively avoiding deformation and surface damage caused by uneven clamping force. It also precisely fixes the gear in the designated processing position, significantly reducing gear displacement deviation during processing and providing a stable and reliable positioning guarantee for high-precision chamfering. The processing synchronization is strong, eliminating the need for separate control of the grinder's movement. This device can achieve synchronous linkage between gear rotation processing and grinder movement, ensuring precise fixing of the gear through the expansion and positioning mechanism. During gear grinding, the grinding machine automatically and synchronously moves to the preset processing position, quickly responding to processing needs. This effectively solves the problems of response lag and positioning deviation caused by independent control of positioning and grinding movement in existing technologies, significantly improving the continuity and efficiency of chamfering. The machine features a simple and practical structure, integrating with the grinding machine's synchronous movement function. This eliminates the need for an additional grinding machine movement control module and transmission structure, simplifying the overall structure of the chamfering machine, reducing manufacturing costs and maintenance difficulty, and minimizing manual operation steps, making it easier for operators to quickly learn and improving production convenience. The machine offers dual improvements in processing quality and efficiency. Precise expansion support positioning combined with the synchronous and precise movement of the grinding machine enables real-time grinding of gears, ensuring uniform chamfer dimensions and consistent angles across all parts of the gear. This effectively reduces processing errors, improves gear chamfering quality, and avoids time wasted due to grinding machine movement and adjustment, significantly increasing overall processing efficiency and better meeting the production needs of batch high-precision gear processing. Attached Figure Description

[0015] Figure 1 This is an isometric view of a positioning device for improving the chamfering accuracy of a gear chamfering machine according to the present invention.

[0016] Figure 2 This is a schematic diagram of the internal structure of a positioning device for improving the chamfering accuracy of a gear chamfering machine according to the present invention.

[0017] Figure 3 This is a cross-sectional view of the housing of a positioning device for improving the chamfering accuracy of a gear chamfering machine according to the present invention.

[0018] Figure 4 This is a schematic diagram of a grinding machine installation for a positioning device used to improve the chamfering accuracy of a gear chamfering machine, according to the present invention.

[0019] Figure 5 This is a schematic diagram of the mounting of a positioning seat for a positioning device used to improve the chamfering accuracy of a gear chamfering machine according to the present invention.

[0020] Figure 6 This is a schematic diagram of the installation of the expansion plate of a positioning device for improving the chamfering accuracy of a gear chamfering machine according to the present invention.

[0021] Figure 7 This is a cross-sectional view of a positioning seat for a positioning device used to improve the chamfering accuracy of a gear chamfering machine according to the present invention.

[0022] Figure 8 This is a cross-sectional view of the drive cylinder of a positioning device for improving the chamfering accuracy of a gear chamfering machine according to the present invention.

[0023] Figure 9 This is a schematic diagram of the mounting of a positioning device for improving the chamfering accuracy of a gear chamfering machine according to the present invention.

[0024] Figure 10 This is a schematic diagram of the installation of a movable pin in a positioning device for improving the chamfering accuracy of a gear chamfering machine according to the present invention.

[0025] Figure 11 This is a schematic diagram of the installation of a small slider in a positioning device for improving the chamfering accuracy of a gear chamfering machine according to the present invention.

[0026] Figure 12 This is a schematic diagram of the spur gear installation of a positioning device for improving the chamfering accuracy of a gear chamfering machine according to the present invention.

[0027] Figure 13 This is a schematic diagram of the installation of a disc cam in a positioning device for improving the chamfering accuracy of a gear chamfering machine according to the present invention.

[0028] Figure 14 This is a schematic diagram of the installation of a square slider in a positioning device for improving the chamfering accuracy of a gear chamfering machine according to the present invention.

[0029] Figure 15 This is a schematic diagram of the installation of a drive pin in a positioning device for improving the chamfering accuracy of a gear chamfering machine according to the present invention.

[0030] Numbering in the diagram: 1-Box body, 2-Top cover, 3-Observation window, 4-Side door, 5-Bottom plate, 6-Support leg, 7-First motor, 8-Drive cylinder, 9-Positioning seat, 10-Expansion plate, 11-Threaded rod, 12-Circular sleeve seat, 13-Short connecting rod, 14-Second motor, 15-Sleeve, 16-Connecting plate, 17-Four-jaw bracket, 18-First spring, 19-Centrifuge rod, 20-Centrifuge seat, 21-Centrifuge ball, 22-Inner ring, 23-Outer ring, 24-Long guide rod, 25-Square sleeve seat, 26-Inner rod, 27-Pressure rod, 28-Connecting rod, 29-First guide plate, 30-First inclined groove, 3 1-Short guide rod, 32-First sliding pin, 33-Standing base, 34-Third motor, 35-Grinding wheel, 36-Live pin, 37-L-shaped hanging plate, 38-Toothed locking plate, 39-Sleeve plate, 40-Small slider, 41-Second spring, 42-Second sliding pin, 43-Second guide plate, 44-Second inclined groove, 45-Spur gear, 46-Spur rack, 47-First connecting rod, 48-Disc cam, 49-Drive pin, 50-Small arc groove, 51-Variable diameter groove, 52-Wave groove, 53-Second connecting rod, 54-U-shaped seat, 55-Square slider, 56-Operating table, 57-Grinding machine, 58-Multi-axis robot arm. Detailed Implementation

[0031] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] like Figures 1-15 As shown, the present invention provides a positioning device for improving the chamfering accuracy of a gear chamfering machine, comprising a housing 1, an operating table 56 inside the housing 1, a rotatable drive cylinder 8 in the middle of the operating table 56, an expansion positioning mechanism at the upper end of the drive cylinder 8, the expansion positioning mechanism including a positioning seat 9, a plurality of expansion plates 10 at the upper end of the positioning seat 9, and a rotatable threaded rod 11 in the middle of the positioning seat 9, which can move the plurality of expansion plates 10 outward when the threaded rod 11 rotates; a stand 33 is also provided on one side of the operating table 56, and a grinding machine is provided at the upper end of the stand 33, which can move the stand 33 and the grinding machine to one side when the drive cylinder 8 rotates; a movable grinding machine 57 is provided on the other side of the operating table 56.

[0033] like Figures 1-10As shown, the housing 1 is used to seal and install the entire device. The bottom of the housing 1 has a base plate 5, and multiple support legs 6 are located at the lower end of the base plate 5. The base plate 5 and support legs 6 support the entire device. The operating table 56 is used to install and support the drive cylinder 8, the expansion and positioning mechanism, the grinder, grinding components, etc. A first motor 7 is fixedly connected to the lower surface of the operating table 56, and the drive cylinder 8 is fixedly connected to the output end of the first motor 7. The function of the first motor 7 is to provide rotational power to the drive cylinder 8. The motor is existing technology and will not be described in detail. The grinding machine 57 includes a grinding disc and a drive motor. A multi-axis manipulator 58 is also provided on one side of the grinding machine 57. The multi-axis manipulator 58 can control the grinding machine 57 to move up and down, left and right, or tilt. The grinding machine 57 and multi-axis robot 58 are existing technologies and will not be described in detail. Through the set expansion and positioning mechanism, namely the positioning seat 9, expansion plate 10, threaded rod 11, etc., the gear to be processed is placed on the positioning seat 9. When the threaded rod 11 rotates, it drives the expansion plate 10 to move outward synchronously, thereby expanding, positioning, and fixing the gear, ensuring the gear is precisely fixed in the designated position. When grinding is required, the first motor 7 is started to control the rotation of the drive cylinder 8. Through the set movable grinding machine 57, the gear can be ground. When the drive cylinder 8 rotates, it also allows the stand 3 to move. 3. The grinding machine moves to a designated position to one side, at which point it can contact the gear for real-time grinding. The internal expansion and positioning mechanism of the device adaptively expands and fixes the gear. Compared to traditional clamping positioning, expansion and positioning ensures uniform force on the gear, effectively preventing deformation and surface damage caused by uneven clamping force. It also precisely fixes the gear in the designated processing position, significantly reducing gear displacement deviation during processing and providing stable and reliable positioning for high-precision chamfering. The device exhibits strong processing synchronization, eliminating the need for separate control of the grinding machine's movement. It achieves synchronous linkage between gear rotation processing and grinding machine movement. When the gear is precisely fixed by the expansion and positioning mechanism and then ground, the grinding machine can automatically and synchronously move to the preset processing position, quickly responding to processing needs. This effectively solves the problems of response lag and positioning deviation caused by independent control of positioning and grinding movement in existing technologies, significantly improving the continuity and efficiency of chamfering. The structure is simple and highly practical. By integrating the synchronous movement function with the grinding machine, there is no need to configure an additional grinding machine movement control module and transmission structure, simplifying the overall structure of the chamfering machine, reducing equipment manufacturing costs and subsequent maintenance difficulties, and reducing manual operation steps, making it easier for operators to get started quickly and improving the convenience of production operations.This system achieves a dual improvement in processing quality and efficiency. Precise expansion support positioning, combined with the synchronized and precise movement of the grinding machine, enables real-time grinding of gears. This ensures uniform chamfer dimensions and consistent angles across all gear parts, effectively reducing processing errors and improving the quality of gear chamfering. Simultaneously, it avoids time wasted due to grinding machine movement and adjustments, significantly increasing overall processing efficiency and better meeting the production needs of batch high-precision gear processing.

[0034] The expansion plates 10 are all slidably connected to the upper surface of the positioning seat 9. A circular sleeve seat 12 is threadedly connected to the outer surface of the threaded rod 11. Multiple evenly distributed short connecting rods 13 are hinged to the outer surface of the circular sleeve seat 12. The outer ends of the short connecting rods 13 are all hinged to the corresponding expansion plates 10.

[0035] like Figures 5-6 As shown, the positioning seat 9 is fixed to the upper surface of the drive cylinder 8. When the drive cylinder 8 rotates, it can drive the positioning seat 9, the expansion plate 10, and the threaded rod 11 to rotate synchronously. The expansion plate 10 can slide inward or outward on the upper surface of the positioning seat 9. The inner side of the upper end of the short connecting rod 13 is hinged to the outer surface of the round sleeve seat 12, and the outer side of the upper end of the short connecting rod 13 is hinged to the inner end face of the expansion plate 10. When the threaded rod 11 rotates, it can drive the short connecting rod 13 to move upward or downward through the threaded connection with the round sleeve seat 12. The outer side of the short connecting rod 13 will drive multiple expansion plates 10 to move inward or outward, thereby positioning, fixing, or loosening the gear.

[0036] The outer surface of the drive cylinder 8 is provided with an outer ring 23 that can move up and down. A connecting rod 28 is fixedly connected to the outer surface of the outer ring 23. The upper end of the operating table 56 is slidably connected to a first guide plate 29 that is fixedly connected to the connecting rod 28. The stand 33 is slidably connected to the upper surface of the operating table 56. The inner wall of the stand 33 is provided with a first sliding pin 32. The first guide plate 29 is provided with a first inclined groove 30 that cooperates with the first sliding pin 32.

[0037] like Figures 9-10As shown, the stand 33 is slidably connected to the upper surface of the operating table 56. The first sliding pin 32 is fixed to the inner wall of the stand 33. Two short guide rods 31 are fixed to the upper surface of the operating table 56. The first guide plate 29 is slidably connected to the outer surface of the two short guide rods 31, limiting the first guide plate 29 to only move up and down. That is, the first guide plate 29 is slidably connected to the upper surface of the operating table 56. The connecting rod 28 is fixed to the lower surface of the first guide plate 29, limiting the outer ring 23 and the connecting rod 28 to only move up and down. When the outer ring 23, the connecting rod 28, and the first guide plate 29 move up and down... Through the engagement of the first sliding pin 32 and the first inclined groove 30, the first sliding pin 32, the stand 33, and the grinder can be driven to move synchronously to the right or to the left. When moving to the left, it can move away from the gear, and when moving to the right, it can move closer to the gear, thereby grinding the gear. When moving away from the gear, it is convenient to disassemble and replace the gear. The grinder includes a third motor 34 and a grinding wheel 35. The third motor 34 is fixed to the upper surface of the stand 33, and the grinding wheel 35 is fixed to the output end of the third motor 34. When the third motor 34 is started, it can drive the grinding wheel 35 to rotate. The grinder is existing technology and will not be described in detail.

[0038] The inner wall of the drive cylinder 8 is slidably connected to a connecting plate 16, and an inner ring 22 is fixedly connected to the outer side of the connecting plate 16. The inner ring 22 is rotatably connected to the inner wall of the outer ring 23. The inner wall of the drive cylinder 8 is also provided with a centrifugal mechanism. When the drive cylinder 8 rotates, the centrifugal mechanism can drive the connecting plate 16 to move downward.

[0039] like Figure 8 As shown, the connecting plate 16 can slide up and down on the inner wall of the drive cylinder 8. When the drive cylinder 8 rotates, it can drive the connecting plate 16 and the inner ring 22 to rotate. Through the centrifugal mechanism, when the drive cylinder 8 rotates to grind the gear, the centrifugal mechanism can work, thereby driving the connecting plate 16 and the outer ring 23 to move downward, that is, driving the stand 33 and the grinder to move to the right, and grinding the gear in real time.

[0040] The centrifugal mechanism includes a sleeve 15, a four-claw bracket 17 fixedly connected to the outer surface of the sleeve 15, and a first spring 18 that cooperates with the connecting plate 16 on the outer surface of the sleeve 15. Multiple evenly distributed centrifugal seats 20 are slidably connected to the inner wall of the four-claw bracket 17. Each centrifugal seat 20 has a centrifugal ball 21 at its lower end and a centrifugal rod 19 hinged to its upper end. The upper end of each centrifugal rod 19 is hinged to the lower surface of the connecting plate 16.

[0041] like Figure 8As shown, a second motor 14 is fixedly connected to the inner wall of the bottom end of the drive cylinder 8, and a threaded rod 11 is fixedly connected to the output end of the second motor 14. The function of the second motor 14 is to provide rotational power to the threaded rod 11. The sleeve 15 is fixedly connected to the second motor 14, and the threaded rod 11 passes through the sleeve 15 and is rotatably connected to the inner wall of the sleeve 15. The connecting plate 16 can slide up and down on the outer surface of the sleeve 15. The upper end of the first spring 18 is fixedly connected to the lower end surface of the connecting plate 16, and the lower end of the first spring 18 is fixedly connected to the upper end surface of the four-jaw bracket 17. The first spring 18 always exerts an upward driving force on the connecting plate 16, so that the connecting plate 16 is in the highest position under normal conditions, and the centrifugal ball 21 is in the innermost position under normal conditions; the centrifugal seat 20 can... The four-jaw frame 17 can slide inward or outward on its inner wall. When the drive cylinder 8, the second motor 14, the sleeve 15, etc. rotate synchronously, the four-jaw frame 17 can be driven to rotate and the centrifugal ball 21 can move in a circle. When the centrifugal ball 21 moves in a circle, under the action of centrifugal force, it can drive the centrifugal seat 20 and the centrifugal rod 19 to move outward. When the centrifugal rod 19 moves outward, it can drive the connecting plate 16 and the outer ring 23 to move downward, thereby driving the stand 33, the grinder, etc. to move to the right, so that the grinder can grind the gear in real time. When the drive cylinder 8 stops rotating, the connecting plate 16 will move upward and reset under the elastic force of the first spring 18, that is, the corresponding centrifugal ball 21 moves inward and closes.

[0042] The upper surface of the connecting plate 16 is fixed with a plurality of long guide rods 24 that are slidably connected to the positioning seat 9. A square sleeve 25 is fixed to the upper end of the plurality of long guide rods 24. An inner rod 26 is fixed to the outer end face of the square sleeve 25. A pressure rod 27 is sleeved on the outer surface of the inner rod 26. The pressure rod 27 is slidably connected to the inner wall of the corresponding expansion plate 10.

[0043] like Figures 6-7 As shown, the long guide rod 24 can slide up and down on the inner wall of the positioning seat 9, and the pressure rod 27 can slide up and down on the inner wall of the expansion plate 10. The pressure rod 27 can also slide inward or outward on the outer surface of the inner rod 26. When the drive cylinder 8 rotates and the connecting plate 16 moves downward, it can drive the square sleeve 25, the long guide rod 24, the inner rod 26, the pressure rod 27, etc. to move downward synchronously. When the pressure rod 27 moves downward, it can squeeze the upper end face of the gear, thereby preventing the gear from moving when it rotates at high speed, and making the positioning more accurate. When the expansion plate 10 moves inward or outward, it can drive the pressure rod 27 to move inward or outward synchronously. At this time, the pressure rod 27 can slide with the inner rod 26. That is, when the connecting plate 16 moves up and down, it can drive the pressure rod 27 to move up and down. The pressure rod 27 can also move inward or outward. The two movements do not affect each other.

[0044] The front end of the box 1 is provided with a side door 4 that can be flipped up and down, and the upper end of the box 1 is provided with a top cover 2. An observation window 3 is opened on the inner wall of the top cover 2. When the side door 4 is flipped up, the operating table 56 can be flipped down.

[0045] like Figures 1-2 As shown, the upper end of the side door 4 is hinged to the front end of the box 1, the upper cover 2 can seal the upper end of the box 1, and the observation window 3 is equipped with transparent glass to facilitate observation of the gear processing. When the side door 4 is flipped upward, the box 1 can be opened, which makes it easy to replace the gear. At the same time, the operating table 56 can be flipped downward to pour the grinding debris into the designated position.

[0046] A spur gear 45 is rotatably connected to the inner wall of one side of the housing 1. A rack 46 that is slidably connected to the housing 1 is meshed at the upper end of the spur gear 45. A first connecting rod 47 is hinged to the front end of the rack 46. The front end of the first connecting rod 47 is hinged to the side door 4. A toothed lock plate 38 that cooperates with the spur gear 45 is also provided on one end face of the housing 1.

[0047] like Figure 12 As shown, a rotating shaft is fixed to the inner wall of the center of the spur gear 45. The rotating shaft is rotatably connected to the inner wall of the housing 1, limiting the spur gear 45 to rotate. The rack 46 can slide left and right on the inner wall of the housing 1. When the side door 4 flips upward, it can drive the front end of the first connecting rod 47 to flip upward. The rear end of the first connecting rod 47 will drive the rack 46 to move forward. When the rack 46 moves forward, it can drive the spur gear 45 to rotate. When the spur gear 45 rotates, it can drive the operating table 56 to flip downward. Through the toothed locking plate 38, when the toothed locking plate 38 moves backward, it can mesh with the spur gear 45. At this time, it can restrict the rotation of the spur gear 45, that is, restrict the operation table 56 and the side door 4 from flipping and moving.

[0048] A second guide plate 43 is fixedly connected to one end face of the toothed locking plate 38, and a sleeve plate 39 is fixedly connected to one end face of the housing 1. A small slider 40 is slidably connected to the inner wall of the sleeve plate 39. A second sliding pin 42 is fixedly connected to the upper surface of the small slider 40. A second inclined groove 44 that cooperates with the second sliding pin 42 is opened on the inner wall of the second guide plate 43. A second spring 41 that cooperates with the small slider 40 is also provided on the inner wall of the sleeve plate 39. An L-shaped hanging plate 37 is fixedly connected to the lower surface of the small slider 40. A movable pin 36 that cooperates with the L-shaped hanging plate 37 is provided on one end face of the stand 33.

[0049] like Figures 10-12As shown, the toothed locking plate 38 can slide back and forth on the inner wall of the housing 1, and the small slider 40 can slide left and right on the inner wall of the sleeve plate 39. One end of the second spring 41 is fixed to the inner wall of the sleeve plate 39, and the other end of the second spring 41 is fixed to the small slider 40. The second spring 41 always exerts a leftward driving force on the small slider 40, so that the small slider 40 and the second sliding pin 42 are in the leftmost position under normal conditions. The lower end of the outer surface of the movable pin 36 is fixed to a support seat, which is fixed to the upright 33, which is equivalent to the movable pin 36 being fixed to the upright 33. 3. When the stand 33 moves left and right, it drives the movable pin 36 to move left and right. When the small slider 40 and the second sliding pin 42 move to the right, the engagement of the second sliding pin 42 and the second inclined groove 44 drives the second guide plate 43 and the toothed locking plate 38 to move backward. When the toothed locking plate 38 moves backward and engages with the spur gear 45, the spur gear 45 can be locked, thus fixing the spur gear 45. When the drive cylinder 8 rotates, it can process the gear. At this time, under the action of the centrifugal mechanism, it can drive the stand 33 to the right. When the upright 33 and movable pin 36 move to the right, they can drive the L-shaped hanging plate 37, small slider 40, and second sliding pin 42 to move to the right. When the second sliding pin 42 moves to the right, it can drive the toothed locking plate 38 to move backward, thereby causing the toothed locking plate 38 to mesh with the spur gear 45 and fix the spur gear 45. At this time, it can fix the side door 4, operating table 56, etc., and prevent accidental opening of the side door 4 during use, thus improving safety performance. After the drive cylinder 8 stops rotating and the gear processing is completed, the upright 33 and movable pin 36 are in contact with the first spring. Under the elastic force of spring 18, it can move to the left to reset. Under the elastic force of spring 41, the small slider 40 and the second sliding pin 42 can move forward to reset. At this time, the side door 4 can be opened. The side door 4 and the operating table 56 can be positioned without being driven by external force. That is, through the friction between the components, the side door 4 and the operating table 56 can be fixed in the normal state. When the side door 4 is driven to flip upward, the operating table 56, the stand 33, the movable pin 36, etc. can flip downward. The movement of the movable pin 36 and the L-shaped hanging plate 37 do not interfere with each other.

[0050] A disc cam 48 is coaxially fixed to one side of the spur gear 45. A U-shaped seat 54 is fixed to one end face of the housing 1. A square slider 55 is slidably connected to the inner wall of the U-shaped seat 54. A drive pin 49 is fixed to the inner wall of the square slider 55. The disc cam 48 is provided with a small arc groove 50, a variable diameter groove 51 and a wave groove 52 that cooperate with the drive pin 49. A second connecting rod 53 is rotatably connected to the outer surface of the drive pin 49. The lower end of the second connecting rod 53 is hinged to the upper surface of the operating table 56.

[0051] like Figures 13-15As shown, the disc cam 48 is fixed to the outer surface of the rotating shaft. When the spur gear 45 rotates, it can drive the disc cam 48 to rotate. The U-shaped seat 54 provides limiting support for the square slider 55 and the drive pin 49, limiting the square slider 55 and the drive pin 49 to only move up and down. The rear end of the operating table 56 is hinged to the inner wall of the housing 1. When the square slider 55 and the drive pin 49 move up and down, they can drive the second connecting rod 53 to move up and down. The lower end of the second connecting rod 53 will drive the operating table 56 to rotate up and down. The installation and shape of the drive pin 49 and the disc cam 48 are as follows. Figure 15 As shown, when the small arc groove 50 engages with the drive pin 49, the drive pin 49 is positioned at a designated location when the disc cam 48 rotates, meaning it will not move upwards or downwards. When the disc cam 48 is not rotating, the drive pin 49 remains stably in the designated position, meaning the corresponding operating table 56 is stably horizontal. When the variable diameter groove 51 engages with the drive pin 49, the drive pin 49 moves upwards or downwards when the disc cam 48 rotates, causing the operating table 56 to flip upwards or downwards. When the wave groove 52 engages with the drive pin 49, the drive pin 49 is positioned at its lowest point and moves up and down in an oscillating motion when the disc cam 48 rotates. The corresponding operating table 56 is tilted downwards to the bottom position and can oscillate up and down, so that the grinding dust falls to the designated position under the action of inertia. When the side door 4 is tilted upwards to open, it can drive the rack 46 to move forward, the spur gear 45 and the disc cam 48 to rotate. When the disc cam 48 rotates, it can drive the drive pin 49 to enter the small arc groove 50 into the variable diameter groove 51 and then into the inner wall of the wave groove 52. That is, the corresponding operating table 56 can tilt downwards and oscillate up and down after tilting downwards to the bottom, so that the impurities on the top of the operating table 56 fall to the designated position. When the side door 4 is tilted downwards to close, the operating table 56 can tilt upwards to reset. This will not be described in detail.

[0052] In use, the gear to be processed is placed on the positioning seat 9. When the threaded rod 11 rotates, it drives the expansion plate 10 to move outward synchronously, thereby expanding and positioning the gear and fixing it in a precise position. When grinding is required, the first motor 7 is started to control the drive cylinder 8 to rotate. When the drive cylinder 8 rotates, it moves the stand 33 and the grinder to one side to a designated position, allowing the grinder to contact the gear for real-time grinding. The expansion and positioning mechanism inside the device can adaptively expand and fix the gear. Compared with traditional clamping positioning, expansion positioning can ensure uniform force on the gear, effectively avoiding deformation and surface damage caused by uneven clamping force. At the same time, it can precisely fix the gear in the designated processing position, significantly reducing the displacement deviation of the gear during processing and providing a stable and reliable positioning guarantee for high-precision chamfering. The processing synchronization is strong, and there is no need for separate control of the grinder movement. This device can realize the synchronous linkage between gear rotation processing and grinder movement. When the gear grinding process is completed after the mechanism is precisely fixed, the grinding machine can automatically and synchronously move to the preset processing position, quickly responding to processing needs. This effectively solves the problems of response lag and positioning deviation caused by independent control of positioning and grinding movement in existing technologies, significantly improving the continuity and efficiency of chamfering. The structure is simple and highly practical. By integrating the synchronous movement function with the grinding machine, there is no need to configure an additional grinding machine movement control module and transmission structure, simplifying the overall structure of the chamfering machine, reducing equipment manufacturing costs and subsequent maintenance difficulties, and reducing manual operation steps, making it easier for operators to get started quickly and improving the convenience of production operations. The processing quality and efficiency are both improved. The precise expansion support positioning, combined with the synchronous and precise movement of the grinding machine, enables real-time grinding of gears, ensuring that the chamfer dimensions of each part of the gear are uniform and the angles are consistent, effectively reducing processing errors, improving the quality of gear chamfering, and avoiding the time wasted due to grinding machine movement and debugging. This greatly improves the overall processing efficiency and can better meet the production needs of batch high-precision gear processing.

Claims

1. A positioning device for improving the chamfering accuracy of a gear chamfering machine, comprising a housing (1), characterized in that: The box (1) is equipped with an operating table (56) inside. The operating table (56) is equipped with a rotatable drive cylinder (8) in the middle. The drive cylinder (8) is equipped with an expansion and positioning mechanism at the upper end. The expansion and positioning mechanism includes a positioning seat (9). The positioning seat (9) is equipped with multiple expansion plates (10) at the upper end. The positioning seat (9) is equipped with a rotatable threaded rod (11) in the middle. When the threaded rod (11) rotates, it can move the multiple expansion plates (10) outward. The operating table (56) is also equipped with a stand (33) on one side. The stand (33) is equipped with a grinder at the upper end. When the drive cylinder (8) rotates, it can move the stand (33) and the grinder to one side. The operating table (56) is equipped with a movable grinding machine (57) on the other side.

2. The positioning device for improving the chamfering accuracy of a gear chamfering machine as described in claim 1, characterized in that: The expansion plates (10) are all slidably connected to the upper surface of the positioning seat (9). A circular sleeve seat (12) is threadedly connected to the outer surface of the threaded rod (11). Multiple evenly distributed short connecting rods (13) are hinged to the outer surface of the circular sleeve seat (12). The outer ends of the short connecting rods (13) are all hinged to the corresponding expansion plates (10).

3. The positioning device for improving the chamfering accuracy of a gear chamfering machine as described in claim 1, characterized in that: The outer surface of the drive cylinder (8) is provided with an outer ring (23) that can move up and down. A connecting rod (28) is fixedly connected to the outer surface of the outer ring (23). The upper end of the operating table (56) is slidably connected to a first guide plate (29) that is fixedly connected to the connecting rod (28). The stand (33) is slidably connected to the upper surface of the operating table (56). The inner wall of the stand (33) is provided with a first sliding pin (32). The first guide plate (29) is provided with a first inclined groove (30) that cooperates with the first sliding pin (32).

4. The positioning device for improving the chamfering accuracy of a gear chamfering machine as described in claim 3, characterized in that: The inner wall of the drive cylinder (8) is slidably connected to a connecting plate (16), and an inner ring (22) is fixedly connected to the outer side of the connecting plate (16). The inner ring (22) is rotatably connected to the inner wall of the outer ring (23). The inner wall of the drive cylinder (8) is also provided with a centrifugal mechanism. When the drive cylinder (8) rotates, the centrifugal mechanism can drive the connecting plate (16) to move downward.

5. A positioning device for improving the chamfering accuracy of a gear chamfering machine as described in claim 4, characterized in that: The centrifugal mechanism includes a sleeve (15), a four-claw frame (17) is fixedly connected to the outer surface of the sleeve (15), and a first spring (18) that cooperates with the connecting plate (16) is also sleeved on the outer surface of the sleeve (15). Multiple evenly distributed centrifugal seats (20) are slidably connected to the inner wall of the four-claw frame (17). Centrifugal balls (21) are provided at the lower end of each centrifugal seat (20), and centrifugal rods (19) are hinged to the upper end of each centrifugal seat (20). The upper end of each centrifugal rod (19) is hinged to the lower surface of the connecting plate (16).

6. A positioning device for improving the chamfering accuracy of a gear chamfering machine as described in claim 4, characterized in that: The upper surface of the connecting plate (16) is fixed with a plurality of long guide rods (24) that are slidably connected to the positioning seat (9). The upper ends of the plurality of long guide rods (24) are fixed with a square sleeve (25). An inner rod (26) is fixed to the outer end face of the square sleeve (25). A pressure rod (27) is sleeved on the outer surface of the inner rod (26). The pressure rod (27) is slidably connected to the inner wall of the corresponding expansion plate (10).

7. A positioning device for improving the chamfering accuracy of a gear chamfering machine as described in claim 1, characterized in that: The front end of the box (1) is provided with a side door (4) that can be flipped up and down, and the upper end of the box (1) is provided with a cover (2). The inner wall of the cover (2) is provided with an observation window (3). When the side door (4) is flipped up, the operating table (56) can be flipped down.

8. A positioning device for improving the chamfering accuracy of a gear chamfering machine as described in claim 7, characterized in that: A spur gear (45) is rotatably connected to the inner wall of one side of the box (1). A rack (46) that is slidably connected to the box (1) is meshed at the upper end of the spur gear (45). A first connecting rod (47) is hinged to the front end of the rack (46). The front end of the first connecting rod (47) is hinged to the side door (4). A toothed locking plate (38) that cooperates with the spur gear (45) is also provided on one side end face of the box (1).

9. A positioning device for improving the chamfering accuracy of a gear chamfering machine as described in claim 8, characterized in that: A second guide plate (43) is fixedly connected to one end face of the toothed locking plate (38), a sleeve plate (39) is fixedly connected to one end face of the box body (1), a small slider (40) is slidably connected to the inner wall of the sleeve plate (39), a second sliding pin (42) is fixedly connected to the upper surface of the small slider (40), a second inclined groove (44) that cooperates with the second sliding pin (42) is opened on the inner wall of the second guide plate (43), a second spring (41) that cooperates with the small slider (40) is also provided on the inner wall of the sleeve plate (39), an L-shaped hanging plate (37) is fixedly connected to the lower surface of the small slider (40), and a movable pin (36) that cooperates with the L-shaped hanging plate (37) is provided on one end face of the stand (33).

10. A positioning device for improving the chamfering accuracy of a gear chamfering machine as described in claim 7, characterized in that: A disc cam (48) is coaxially fixed to one side of the spur gear (45), and a U-shaped seat (54) is fixed to one side of the housing (1). A square slider (55) is slidably connected to the inner wall of the U-shaped seat (54), and a drive pin (49) is fixed to the inner wall of the square slider (55). A small arc groove (50), a variable diameter groove (51), and a wave groove (52) that cooperate with the drive pin (49) are provided on the disc cam (48). A second connecting rod (53) is rotatably connected to the outer surface of the drive pin (49), and the lower end of the second connecting rod (53) is hinged to the upper surface of the operating table (56).

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