Gear grinding device for mechanical gears and gear grinding method

Abstract

The application relates to the technical field of gear machining, and discloses a gear grinding device for mechanical gear machining and a gear grinding method thereof, which comprises a machining table and further comprises a rotary circular table, two inner support parts and a plurality of inner support rollers. The rotary circular table is installed on the machining table and can be rotationally adjusted. The inner support part comprises a bearing table and a connecting cylinder which are integrally connected, and opposite ends of the two connecting cylinders can be mutually docked through a connecting part. One of the bearing tables is fixed on the rotary circular table. The inner support rollers are installed on the connecting cylinders and can be moved and adjusted in a centrifugal or centripetal direction. The application utilizes the axis positioning of the upper and lower connecting cylinders and the detection function of the detection part to sequentially transfer positioning and verify the fixing precision of the gear, avoids the error synchronization of the upper and lower parts leading to the misjudgment, can self-check the fixing precision of the gear, ensures the coaxiality of the gear and the connecting cylinder, and significantly improves the precision and quality of the gear grinding machining.

Description

Technical Field

[0001] This invention relates to the field of gear processing technology, specifically to a gear grinding device and method for mechanical gear processing. Background Technology

[0002] In gear manufacturing, the process of grinding gear teeth using a gear grinding machine is called gear grinding. Gear grinding includes: internal and external grinding of spur gear teeth, internal and external grinding of helical gear teeth, and grinding of bevel gear teeth. A gear grinding machine is a metal cutting machine tool used for gear finishing.

[0003] A CNC gear grinding machine is disclosed in Chinese patent publication number CN119115097B. This gear grinding machine significantly improves the stability during the grinding process through a dual vibration reduction mechanism of anti-vibration components and damping components, thereby ensuring the accuracy of gear processing and reducing processing errors caused by vibration.

[0004] However, in the gear grinding process, in addition to the vibration of the grinding wheel, the accuracy of the gear is also related to the accuracy of the gear clamping and fixing. Especially for the clamping and fixing of internal spline gears, there are high requirements for their coaxiality. If the centering is not accurate enough, there will be an error between the gear and the internal spline during grinding, which will affect the final gear quality. Summary of the Invention

[0005] The purpose of this invention is to provide a gear grinding device and a gear grinding method for machining mechanical gears, so as to solve at least one technical problem existing in the prior art.

[0006] To achieve the above objectives, in a first aspect, the present invention provides the following technical solution: a gear grinding apparatus for machining mechanical gears, comprising a machining table, and further comprising:

[0007] A rotating drum table, which is mounted on a machining table and can be rotated and adjusted;

[0008] Two inner support parts, each inner support part including an integrally connected support platform and a connecting cylinder, and the opposite ends of the two connecting cylinders can be connected to each other through the connecting part, and one of the support platforms is fixed on a rotating circular platform;

[0009] Multiple inner support rollers are mounted on the connecting cylinder and can be adjusted for centrifugal or centripetal movement. When the inner support rollers move centrifugally, they can support and fix the internal spline teeth of the gear and position the axis of the connecting cylinder and the gear.

[0010] A detection unit is provided between two connecting cylinders, the detection unit being used to detect whether the axial positions of the two connecting cylinders are on the same axis;

[0011] A gear grinding assembly mounted on a machining table, the gear grinding assembly being used to grind gears.

[0012] Optionally, the outer wall of the support platform is fixed with a fixing ring sleeved on the outer wall of the connecting cylinder, and the outer wall of the connecting cylinder is equipped with an adjustable ring that can be slidably adjusted. The outer walls of the adjusting ring and the fixing ring are rotatably connected with multiple connecting rods, and an inner support roller is rotatably installed between every two corresponding connecting rods.

[0013] Optionally, the detection unit includes a docking ring integrally formed on the end of the connecting cylinder. The docking ring has multiple docking holes arranged in a ring array. When two docking rings are fitted together, the corresponding docking holes together form a light emission channel. Laser aligners are embedded in the outer walls of the docking rings located at the two exit positions of the light emission channel. The two laser aligners are a transmitter and a receiver, respectively.

[0014] The detection unit also includes a monitoring core inserted into the docking hole. The monitoring core consists of a sleeve and a detection core that are nested together. When the detection core is in a normal state, it is transparent and allows laser to pass through. When the detection core is squeezed, it changes its transparent state and blocks the laser from passing through.

[0015] Optionally, the detection core is a glass column made of transparent glass core material.

[0016] Optionally, the detection core is a glass tube interlayer, with peroxide and lipid compounds on the inside and outside of the interlayer, respectively, and fluorescent dye is filled between the detection core and the sleeve.

[0017] Optionally, both docking rings are made of magnetic material and form magnetic rings that can attract each other.

[0018] Optionally, the connecting part includes a through hole located at the axis of the lower connecting cylinder, and a connecting shaft that can move vertically and rotate is installed in the through hole. The outer wall of the connecting shaft near the top end is threaded, and the connecting cylinder located above is provided with a sleeve hole and a screw hole. The inner diameter of the sleeve hole is larger than the inner diameter of the screw hole, and the inner wall of the screw hole is provided with a threaded groove that can cooperate with the thread on the outer wall of the connecting shaft.

[0019] Optionally, a screw rod rotatably connected to the docking ring is installed through the interior of the support platform. The screw rod is rotatably connected to the fixed ring and to the adjusting ring. A servo motor for driving the screw rod to rotate is also installed on the outer wall of the support platform.

[0020] Optionally, the outer wall of the adjusting ring is provided with multiple sets of adjusting arc grooves, and an adjusting arc block is slidably installed in each adjusting arc groove. The adjusting arc block is fixed to the inner wall of the adjusting arc groove by bolts installed on it, and the connecting rod is rotatably installed on the outer wall of the adjusting arc block.

[0021] In a second aspect, the present invention provides a gear grinding method for machining mechanical gears, including a gear grinding apparatus for machining mechanical gears, and further comprising the following steps:

[0022] S1. The gear to be processed is placed on the connecting cylinder located below and fixed on the rotating platform. Then, the multiple inner support rollers on the connecting cylinder are driven by the external structure to make centrifugal adjustment and support and fix the inner spline key teeth below the gear. While initially fixing the gear, it is made to coincide with the axis of the connecting cylinder and to be initially positioned.

[0023] S2. Insert another connecting cylinder into the spline hole from above the gear and make contact with the connecting cylinder below. Then, drive the multiple inner support rollers on the connecting cylinder to make centrifugal adjustment through the external structure, and support and fix the inner spline key teeth above the gear. Use the gear that has been initially positioned to reposition the axis position of the connecting cylinder, and the key teeth supported by the upper and lower inner support rollers are staggered.

[0024] S3. The detection unit checks whether the axis positions of the two connecting cylinders coincide. If they coincide, it means that the influence of the key teeth on the positioning and fixing of the gear is within the preset value. At this time, the two connecting cylinders can be connected by the connecting unit. If they do not coincide, it means that the influence of the key teeth on the positioning and fixing of the gear exceeds the preset value. The contact position between the inner support roller and the key teeth needs to be switched again, and then repositioned and detected until the two connecting cylinders are in a coaxial state.

[0025] S4. After the gear is fixedly installed, it can be ground by the gear grinding assembly. At the same time, the relative position of the gear and the gear grinding assembly can be adjusted by rotating the rotating platform until the processing is completed.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] I. This invention supports and fixes the internal spline teeth of the gear by the centrifugal or centripetal movement of the inner support roller. At the same time, it uses the axial positioning of the upper and lower connecting cylinders and the detection function of the detection unit to sequentially transmit positioning and verify the fixing accuracy of the gear, avoiding false measurements caused by synchronous upper and lower errors. It can self-check the fixing accuracy of the gear and ensure the coaxiality of the gear and the connecting cylinder, thereby significantly improving the accuracy and quality of gear grinding.

[0028] II. This invention uses a monitoring core in the docking hole to ensure that the two docking rings are coaxial before the internal support is fixed. The laser emitted by the transmitter passes through the monitoring core and is received by the receiver, forming an information path. Then, the axis position of the upper connecting cylinder is repositioned. When the axis positions of the upper and lower connecting cylinders deviate, the shearing force between the two docking rings will squeeze the sleeve and the monitoring core, changing the transparency of the monitoring core and blocking the laser from passing through, thus breaking the information path. In this way, the connection or disconnection of the information path can be used to detect the position of the two connecting cylinder axes, thereby achieving the purpose of detecting the internal support error. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0030] Figure 2 This is a side view of the present invention;

[0031] Figure 3 For the present invention Figure 2 A sectional view along the middle AA;

[0032] Figure 4 For the present invention Figure 2 A sectional view along the middle edge BB;

[0033] Figure 5 For the present invention Figure 3 Enlarged view of point C in the image;

[0034] Figure 6 This is a schematic diagram of the forces acting on the gear of the present invention after it has been fixed.

[0035] Figure 7 This is a schematic diagram of the two internal support parts of the present invention after disassembly;

[0036] Figure 8 This is a three-dimensional structural diagram of the present invention after the two internal support parts have been disassembled;

[0037] Figure 9 This is a schematic diagram of the internal spline gear of the present invention;

[0038] Figure 10 This is a schematic diagram of the stepped-hole gear of the present invention.

[0039] In the diagram: 1. Machining table; 2. Gear grinding assembly; 3. Gear; 4. Bearing platform; 5. Connecting cylinder; 6. Adjusting ring; 7. Fixing ring; 8. Adjusting arc block; 9. Connecting rod; 10. Inner support roller; 11. Docking ring; 12. Sleeve hole; 13. Screw hole; 14. Connecting shaft; 15. Screw; 16. Docking hole; 17. Laser alignment device; 18. Sleeve; 19. Detection core; 20. Adjusting arc groove. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1 to 10 The present invention provides a technical solution: a gear grinding device for machining mechanical gears, including a machining table 1, and further comprising:

[0042] A rotary table, which is mounted on the machining table 1 and can be rotated and adjusted;

[0043] Two inner support parts, each inner support part includes an integrally connected support platform 4 and a connecting cylinder 5, and the opposite ends of the two connecting cylinders 5 can be connected to each other through the connecting part, and one of the support platforms 4 is fixed on the rotating round table.

[0044] Multiple inner support rollers 10 are installed on the connecting cylinder 5 and can be adjusted for centrifugal or centripetal movement. When the inner support rollers 10 move centrifugally, they can support and fix the internal spline teeth of the gear 3 and position the axis of the connecting cylinder 5 and the gear 3.

[0045] A detection unit is provided between the two connecting cylinders 5. The detection unit is used to detect whether the axial positions of the two connecting cylinders 5 are on the same axis.

[0046] Grinding assembly 2 is installed on machining table 1, and grinding assembly 2 is used to grind gear 3.

[0047] When using this gear grinding device, the gear 3 to be processed is placed on the connecting cylinder 5 located below and fixed on the rotating platform. Then, multiple inner support rollers 10 on the connecting cylinder 5 are driven by an external structure to make centrifugal adjustment and support and fix the inner spline teeth below the gear 3. While initially fixing the gear 3, it is also made to coincide with the axis of the connecting cylinder 5 and to be initially positioned. Since the position of the connecting cylinder 5 below is determined, the gear 3 and the connecting cylinder 5 can be made to be coaxial by the inner support fixing method. That is, the gear 3 is initially positioned by the determined axis position.

[0048] Since there may be some error between the internal spline teeth of gear 3, further verification of its positioning accuracy is needed. Therefore, another connecting cylinder 5 is inserted into the spline hole from above gear 3 and contacts the connecting cylinder 5 below. Then, multiple inner support rollers 10 on the connecting cylinder 5 are centrifugally adjusted by an external structure to support and fix the internal spline teeth above gear 3. The pre-positioned gear 3 is used to reposition the axis position of the connecting cylinder 5, and the key teeth supported by the upper and lower inner support rollers 10 are staggered. In this way, the connecting cylinder 5 installed later is positioned by the pre-determined gear 3. At the same time, the staggered contact of the key teeth of the upper and lower inner support rollers 10 can also avoid the mismeasurement caused by the simultaneous elimination of upper and lower errors. Figure 6 As shown, the contact points of the upper and lower inner support rollers 10 are points a and b, respectively. By sequentially transferring the positioning information, after the upper connecting cylinder 5 is installed and positioned, by checking whether the axes of the two connecting cylinders 5 coincide, it can be determined whether the contact error between the inner support roller 10 and the key teeth will affect the fixing accuracy of the gear 3. This achieves a self-testing effect, further improving the grinding accuracy and processing quality of the gear 3. The specific testing is as follows:

[0049] The detection unit checks whether the axes of the two connecting cylinders 5 coincide. If they coincide, it means that the influence of the key teeth on the positioning and fixing of the gear 3 is within the preset value. At this time, the two connecting cylinders 5 can be connected by the connecting unit. Fixing the gear 3 at the upper and lower positions can make its fixing effect more stable and improve processing efficiency. If they do not coincide, it means that the influence of the key teeth on the positioning and fixing of the gear 3 exceeds the preset value. The contact position between the inner support roller 10 and the key teeth needs to be switched again, and then repositioned and detected until the two connecting cylinders 5 are in a coaxial state.

[0050] Once gear 3 is fixedly installed, it can be ground using the gear grinding assembly 2. At the same time, the relative position of gear 3 and gear grinding assembly 2 can be adjusted by rotating the rotating platform until the processing is completed.

[0051] It is worth mentioning that the inner support rollers 10 on the outer wall of the two connecting cylinders 5 are preferably set to 3, because the support surface supported by the three inner support rollers 10 is triangular. The stability of the triangle can improve the support accuracy. At the same time, if the support of one point is incorrect, the change of the error is not easily covered by the other two support points. Compared with four, five or even more, the more support points there are, the greater the effect of the support points adjacent to the error point in eliminating it.

[0052] Taking this case as an example, if there is an error in one of the three support points, the axial position offset of the connecting cylinder 5 will be more obvious. However, if there are more support points, the error of one point will not have a greater impact on the axial position offset of the connecting cylinder 5, because the other adjacent points will compensate for the error at that position. This may cause the positioning accuracy of the connecting cylinder 5 to be inconsistent with the actual situation, thus forming an accuracy in the sense of paper. Therefore, the inner support roller 10 is preferably set to 3.

[0053] In one preferred embodiment, an internal support method for the internal support roller 10 is provided;

[0054] The outer wall of the support platform 4 is fixed with a fixing ring 7 sleeved on the outer wall of the connecting cylinder 5. The outer wall of the connecting cylinder 5 is equipped with an adjusting ring 6 that can be slidably adjusted. The outer walls of the adjusting ring 6 and the fixing ring 7 are rotatably connected with multiple connecting rods 9, and an inner support roller 10 is rotatably installed between every two corresponding connecting rods 9.

[0055] The inside of the support platform 4 is fitted with a screw 15 that is rotatably connected to the docking ring 11. The screw 15 is rotatably connected to the fixed ring 7 and is threadedly connected to the adjusting ring 6. The outer wall of the support platform 4 is also fitted with a servo motor for driving the screw 15 to rotate.

[0056] See Figure 3 and Figure 4 When it is necessary to adjust the centrifugal or centripetal movement of the inner support roller 10, the screw 15 is rotated by the servo motor. The transmission between the threads can drive the adjusting ring 6 to slide vertically on the outer wall of the connecting cylinder 5, thereby driving the inner support roller 10 to move centrifugally or centripetally through the connecting rod 9, so as to achieve the purpose of internal support positioning of the inner spline of the gear 3.

[0057] It is also worth mentioning that the inner support rollers 10 on the upper and lower connecting cylinders 5 are independently controlled, which allows for adaptive adjustment when fixing different inner holes of the gear 3. Figure 10 As shown, it is a stepped hole gear 3 (for example, a gear in a motor that needs to install a bearing, so a stepped hole needs to be made on the gear). Such a hole can also achieve the purpose of internal support and fixation, and at the same time, it can also achieve the purpose of detecting the coaxiality between the stepped holes.

[0058] In one preferred embodiment, an implementation of the detection unit is provided;

[0059] The detection unit includes a docking ring 11 integrally formed on the end of the connecting cylinder 5. Multiple docking holes 16 are distributed in a ring array on the docking ring 11. When two docking rings 11 are fitted together, the corresponding docking holes 16 together form a light emission channel. Laser aligners 17 are embedded in the outer walls of the docking rings 11 located at the two exit positions of the light emission channel. The two laser aligners 17 are a transmitter and a receiver, respectively.

[0060] The detection unit also includes a monitoring core inserted into the docking hole 16. The monitoring core consists of a sleeve 18 and a detection core 19 that are nested together. When the detection core 19 is in a normal state, it is transparent and allows the laser to pass through. When the detection core 19 is squeezed, it changes its transparent state and blocks the laser from passing through.

[0061] For details, please refer to [link / reference]. Figure 3 , Figure 5 and Figure 8 When the connecting cylinder 5 located above extends into the spline hole in the gear 3, before the inner support is fixed, the two docking rings 11 are first attached together, and the corresponding docking holes 16 on them form a light emission channel. Moreover, the monitoring core in the docking hole 16 plays a preliminary positioning role for the two docking rings 11. This allows the two docking rings 11 to be in a coaxial state before the inner support is fixed. The laser emitted by the transmitter will be received by the receiver after passing through the detection core 19, forming an information path.

[0062] Then, the inner support roller 10 on it begins to move centrifugally to support and fix the inner spline of the gear 3, that is, to reposition the axis position of the upper connecting cylinder 5. When the axis positions of the upper and lower connecting cylinders 5 deviate, the shearing force between the two mating rings 11 will squeeze the sleeve 18 and the detection core 19, causing the transparency of the detection core 19 to change and blocking the laser from passing through, thus disconnecting the information path. In this way, the state of the axis position of the two connecting cylinders 5 can be detected by whether the information path is connected or not, thereby achieving the above-mentioned purpose of detecting the inner support error.

[0063] In one preferred embodiment, a first detection core 19 is provided;

[0064] The detection core 19 is a glass column made of transparent glass core. When it is intact, it is transparent and the path of the laser does not change when it passes through the middle. However, when it is squeezed and breaks or shatters, the laser will be reflected or refracted when it passes through again, thus affecting the path of the laser and achieving the purpose of disconnecting the information channel.

[0065] Moreover, the glass column has a certain degree of hardness, which can play a role in the initial positioning of the two docking rings 11. At the same time, it is also relatively brittle, so it is easier to break or shatter when the two docking rings 11 are subjected to shear force, thus ensuring the accuracy and precision of the test results.

[0066] In one preferred embodiment, a second detection core 19 is provided;

[0067] The detection core 19 is a glass tube with a layer of peroxide and an ester compound on the inside and outside of the layer, respectively. The gap between the detection core 19 and the sleeve 18 is filled with fluorescent dye. This design is similar to that of a glow stick. When it is not subjected to external bending or shear stress, it is transparent. When it is subjected to external force, the glass tube interlayer will break, allowing the hydrogen peroxide solution to mix with the ester compound. The hydrogen peroxide will cause the ester compound to undergo an oxidation reaction, generating unstable intermediate products. When these intermediate products decompose, they release energy and transfer the energy to the fluorescent dye molecules. After absorbing the energy, the electrons of the fluorescent dye molecules will jump from the ground state to the excited state. The electrons in the excited state are unstable and will release energy in the form of photons when they quickly return to the ground state, thereby generating fluorescence. The fluorescence can then block the laser, thus achieving the purpose of disconnecting the aforementioned information pathway.

[0068] In one preferred embodiment, both docking rings 11 are made of magnetic material and form magnetic rings that can attract each other.

[0069] The two docking rings 11 are designed to be made of magnets. This is to make the two docking rings 11 more stable during the initial docking. Also, due to the attraction of the magnetic rings, it is difficult to separate them directly along the axis. However, it is relatively easy to separate them if they are staggered. In this way, when the connecting cylinder 5 located above is fixed by the internal support, the docking rings 11 are more likely to be staggered along the horizontal plane, avoiding them from being directly pried apart. The shearing force applied to the monitoring core will be more obvious. At the same time, it also provides sufficient restraining force for the subsequent connection of the two connecting cylinders 5.

[0070] In one preferred embodiment, an implementation of the connecting portion is provided;

[0071] The connecting part includes a through hole located at the axial position of the lower connecting cylinder 5, and a connecting shaft 14 that can move vertically and rotate is installed in the through hole. The outer wall of the connecting shaft 14 near the top is threaded. The upper connecting cylinder 5 has a sleeve hole 12 and a screw hole 13 inside. The inner diameter of the sleeve hole 12 is larger than the inner diameter of the screw hole 13. The inner wall of the screw hole 13 is provided with a threaded groove that can cooperate with the thread on the outer wall of the connecting shaft 14.

[0072] For details, please refer to [link / reference]. Figure 3When the axes of the upper and lower connecting cylinders 5 coincide, the connecting shaft 14 is driven to move vertically and rotate through an external structure, such as a rotary cylinder, so that the thread at the top of the shaft rotates into the screw hole 13. The two connecting cylinders 5 are connected and fixed by the cooperation between them, so as to provide internal support and fixation for the gear 3 in the upper and lower positions.

[0073] At the same time, the threaded fit can also close the top opening of the spline hole of the gear 3 on the upper support platform 4, forming a sealed space inside the spline hole of the gear 3, preventing debris or coolant from entering the interior and affecting it during the gear grinding process.

[0074] In one preferred embodiment, the outer wall of the adjusting ring 6 is provided with multiple sets of adjusting arc grooves 20, and an adjusting arc block 8 is slidably installed in each adjusting arc groove 20. The adjusting arc block 8 is fixed to the inner wall of the adjusting arc groove 20 by bolts installed on it, and the connecting rod 9 is rotatably installed on the outer wall of the adjusting arc block 8.

[0075] See Figure 7 and Figure 8 Due to the limited number of key teeth in the spline hole of gear 3, the contact positions between the inner support roller 10 and the key teeth may be inconsistent. Therefore, by moving the position of the adjusting block 8, the plane of the connecting rod 9 and the inner support roller 10 is changed to ensure that each inner support roller 10 has the same contact position with the key teeth, i.e., the position between two key teeth, thereby ensuring the accuracy of the inner support. Specifically, as follows... Figure 4 As shown.

[0076] A gear grinding method for machining mechanical gears includes a gear grinding apparatus for machining mechanical gears, and further includes the following steps:

[0077] S1. The gear 3 to be processed is placed on the connecting cylinder 5 located below and fixed on the rotating platform. Then, the multiple inner support rollers 10 on the connecting cylinder 5 are driven by the external structure to make centrifugal adjustment and support and fix the inner spline key teeth below the gear 3. While initially fixing the gear 3, it is made to coincide with the axis of the connecting cylinder 5 and to be initially positioned.

[0078] S2. Insert another connecting cylinder 5 into the spline hole from above the gear 3 and make contact with the connecting cylinder 5 below. Then, drive the multiple inner support rollers 10 on the connecting cylinder 5 to make centrifugal adjustment through the external structure, and support and fix the inner spline key teeth above the gear 3. Use the gear 3 that has been initially positioned to reposition the axis position of the connecting cylinder 5, and the key teeth supported by the upper and lower inner support rollers 10 are staggered.

[0079] S3. The detection unit checks whether the axis positions of the two connecting cylinders 5 coincide. If they coincide, it means that the influence of the key teeth on the positioning and fixing of the gear 3 is within the preset value. At this time, the two connecting cylinders 5 can be connected by the connecting unit. If they do not coincide, it means that the influence of the key teeth on the positioning and fixing of the gear 3 exceeds the preset value. The contact position between the inner support roller 10 and the key teeth needs to be switched again, and then repositioned and detected until the two connecting cylinders 5 are in a coaxial state.

[0080] S4. After gear 3 is fixedly installed, it can be ground by grinding gear assembly 2. At the same time, the relative position of gear 3 and gear grinding assembly 2 can be adjusted by rotating the rotating platform until the processing is completed.

[0081] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed directly based on existing technical knowledge without any doubt. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0082] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gear grinding machine for machining mechanical gears, comprising a machining table, characterized in that, Also includes: A rotating drum table, which is mounted on a machining table and can be rotated and adjusted; Two inner support parts, each inner support part including an integrally connected support platform and a connecting cylinder, and the opposite ends of the two connecting cylinders can be connected to each other through the connecting part, and one of the support platforms is fixed on a rotating circular platform; Multiple inner support rollers are mounted on the connecting cylinder and can be adjusted for centrifugal or centripetal movement. When the inner support rollers move centrifugally, they can support and fix the internal spline teeth of the gear and position the axis of the connecting cylinder and the gear. A detection unit is provided between two connecting cylinders, the detection unit being used to detect whether the axial positions of the two connecting cylinders are on the same axis; A gear grinding assembly mounted on a machining table, wherein the gear grinding assembly is used to grind gears; The detection unit includes a docking ring integrally formed on the end of the connecting cylinder. The docking ring has multiple docking holes arranged in a ring array. When two docking rings are fitted together, the corresponding docking holes together form a light emission channel. Laser aligners are embedded on the outer walls of the docking rings located at the two exit positions of the light emission channel. The two laser aligners are a transmitter and a receiver, respectively. The detection unit also includes a monitoring core inserted into the docking hole. The monitoring core consists of a sleeve and a detection core that are nested together. When the detection core is in a normal state, it is transparent and allows laser to pass through. When the detection core is squeezed, it changes its transparent state and blocks the laser from passing through.

2. The gear grinding device for machining mechanical gears according to claim 1, characterized in that: The outer wall of the support platform is fixed with a fixing ring sleeved on the outer wall of the connecting cylinder. The outer wall of the connecting cylinder is equipped with an adjustable ring that can be slidably adjusted. The outer walls of the adjusting ring and the fixing ring are rotatably connected with multiple connecting rods, and an inner support roller is rotatably installed between every two corresponding connecting rods.

3. The gear grinding device for machining mechanical gears according to claim 2, characterized in that: The detection core is a glass column made of transparent glass core material.

4. The gear grinding device for machining mechanical gears according to claim 2, characterized in that: The detection core is a glass tube with a double layer, and the inside and outside of the double layer are peroxide and lipid compounds, respectively. The gap between the detection core and the sleeve is also filled with fluorescent dye.

5. The gear grinding device for machining mechanical gears according to claim 2, characterized in that: Both docking rings are made of magnetic material and form magnetic rings that can attract each other.

6. The gear grinding device for machining mechanical gears according to claim 1, characterized in that: The connecting part includes a through hole located at the axis of the lower connecting cylinder, and a connecting shaft that can move vertically and rotate is installed in the through hole. The outer wall of the connecting shaft near the top is threaded. The connecting cylinder located above is provided with a sleeve hole and a screw hole. The inner diameter of the sleeve hole is larger than the inner diameter of the screw hole. The inner wall of the screw hole is provided with a threaded groove that can cooperate with the thread on the outer wall of the connecting shaft.

7. The gear grinding device for machining mechanical gears according to claim 2, characterized in that: The bearing platform has a screw rod that is rotatably connected to the docking ring installed inside. The screw rod is rotatably connected to the fixed ring and is threadedly connected to the adjusting ring. The outer wall of the bearing platform is also equipped with a servo motor for driving the screw rod to rotate.

8. The gear grinding apparatus for machining mechanical gears according to claim 2, characterized in that: The outer wall of the adjusting ring is provided with multiple sets of adjusting arc grooves, and an adjusting arc block is slidably installed in each adjusting arc groove. The adjusting arc block is fixed to the inner wall of the adjusting arc groove by bolts installed on it, and the connecting rod is rotatably installed on the outer wall of the adjusting arc block.

9. A gear grinding method for machining mechanical gears, comprising the gear grinding apparatus for machining mechanical gears as described in claim 7, characterized in that, It also includes the following steps: S1. The gear to be processed is placed on the connecting cylinder located below and fixed on the rotating platform. Then, the multiple inner support rollers on the connecting cylinder are driven by the servo motor to make centrifugal adjustment and support and fix the inner spline teeth below the gear. While initially fixing the gear, it is made to coincide with the axis of the connecting cylinder and to be initially positioned. S2. Insert another connecting cylinder into the spline hole from above the gear and make contact with the connecting cylinder below. Then, drive the multiple inner support rollers on the connecting cylinder to make centrifugal adjustment through the servo motor, and support and fix the inner spline key teeth above the gear. Use the gear that has been initially positioned to reposition the axis position of the connecting cylinder, and the key teeth supported by the upper and lower inner support rollers are staggered. S3. The detection unit checks whether the axis positions of the two connecting cylinders coincide. If they coincide, it means that the influence of the key teeth on the positioning and fixing of the gear is within the preset value. At this time, the two connecting cylinders can be connected by the connecting unit. If they do not coincide, it means that the influence of the key teeth on the positioning and fixing of the gear exceeds the preset value. The contact position between the inner support roller and the key teeth needs to be switched again, and then repositioned and detected until the two connecting cylinders are in a coaxial state. S4. After the gear is fixedly installed, it can be ground by the gear grinding assembly. At the same time, the relative position of the gear and the gear grinding assembly can be adjusted by rotating the rotating platform until the processing is completed.

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