Gear grinding device for mechanical gear machining and gear grinding method of gear grinding device

Abstract

The invention relates to the technical field of gear machining, and discloses a gear grinding device for mechanical gear machining and a gear grinding method thereof.The gear grinding device comprises a machining table and further comprises a rotary circular truncated cone, a gear grinding device and a gear grinding device, and the rotary circular truncated cone is installed on the machining table and can be rotationally adjusted; the two inner supporting parts comprise bearing tables and connecting cylinders which are integrally connected, the opposite ends of the two connecting cylinders can be in butt joint through the connecting parts, and one bearing table is fixed to the rotary circular truncated cone; and the plurality of inner supporting rollers are arranged on the connecting cylinder and can be centrifugally or centripetally moved and adjusted. By means of axis positioning of the upper connecting cylinder and the lower connecting cylinder and the detection function of the detection part, positioning is transmitted in sequence, the fixing precision of the gear is verified, error detection caused by vertical error synchronization is avoided, the fixing precision of the gear can be detected automatically, the coaxiality of the gear and the connecting cylinders is ensured, and therefore the precision and quality of gear grinding machining are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gear processing, and in particular to a gear grinding device and a gear grinding method for mechanical gear processing. Background Art

[0002] In the gear processing process, the process of grinding the gear teeth using a gear grinding machine is called gear grinding. Gear grinding is divided into: internal gear grinding and external gear grinding of cylindrical spur gears, internal gear grinding and external gear grinding of cylindrical helical gears, and grinding of conical bevel gears, etc. Gear grinding machine is a metal cutting machine tool used for gear finishing.

[0003] A Chinese patent document with the publication number CN119115097B discloses a CNC forming gear grinding machine. This gear grinding machine significantly improves the stability during the grinding process through a dual shock absorption mechanism of an anti-shake component and a damping component, thereby ensuring the accuracy of gear processing and reducing processing errors caused by vibration.

[0004] However, in the process of gear grinding, factors that affect the processing accuracy are not only related to the vibration of the grinding wheel, but also the accuracy of the gear during clamping and fixing. In particular, the clamping and fixing of internal spline gears have very 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 gear grinding, which will affect the final gear quality. Summary of the Invention

[0005] The object of the present invention is to provide a gear grinding device and a gear grinding method for mechanical gear processing, so as to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned objectives, in a first aspect, the present invention provides the following technical solutions: a gear grinding device for machining mechanical gears, comprising a machining table and further comprising: A rotating circular table, which is mounted on the processing table and can be rotated and adjusted; Two inner support parts, each of which includes a supporting platform and a connecting cylinder connected in one piece, and opposite ends of the two connecting cylinders can be connected to each other through a connecting part, and one of the supporting platforms is fixed on the rotating circular table; A plurality of inner support rollers mounted on the connecting cylinder and capable of centrifugal or centripetal movement adjustment, 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 portion provided between the two connecting tubes, the detection portion being used to detect whether the axis positions of the two connecting tubes are on the same axis; A gear grinding assembly is mounted on a processing table and is used for performing gear grinding on a gear.

[0007] Optionally, the outer wall of the supporting platform is fixed with a fixing ring mounted on the outer wall of the connecting tube, and the outer wall of the connecting tube is installed with an adjustment ring that can be slidably adjusted. The outer walls of the adjustment 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.

[0008] Optionally, the detection portion includes a docking ring integrally formed at the end of the connecting tube, the docking ring having a plurality of docking holes distributed in a circular array, and when two of the docking rings are fitted together, the corresponding docking holes together form a light-emitting channel, and the outer walls of the docking rings located at the two exits of the light-emitting channel are embedded with laser aligners, and the two laser aligners serve as a transmitter and a receiver respectively; The detection part also includes a monitoring core inserted into the docking hole. The monitoring core is composed of a sleeve and a detection core that are arranged on each other. When the detection core is in a normal state, it is in a transparent state and can allow laser to pass through. When the detection core is squeezed, the transparent state will change and block the laser from passing through.

[0009] Optionally, the detection core is a glass column made of a transparent glass core material.

[0010] Optionally, the detection core is a glass tube sandwich, and the inside and outside of the sandwich are filled with peroxide and lipid compounds respectively, and the gap between the detection core and the sleeve is also filled with fluorescent dye.

[0011] Optionally, the two docking rings are both made of magnetic materials and form magnetic circles that can attract each other.

[0012] Optionally, the connecting portion includes a through hole located at the axial center position of the lower connecting tube, and a connecting shaft that can be vertically moved and rotationally adjusted is installed in the through hole, a section of the outer wall of the connecting shaft near the top is provided with a thread, and a sleeve hole and a screw hole are provided inside the upper connecting tube, 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 thread groove that can cooperate with the thread of the outer wall of the connecting shaft.

[0013] Optionally, a screw rod rotatably connected to the docking ring is installed through the interior of the support platform, the screw rod passes through and is rotatably connected to the fixing ring, the screw rod passes through and is threadedly connected to the adjustment ring, and a servo motor for driving the screw rod to rotate is also installed on the outer wall of the support platform.

[0014] Optionally, the outer wall of the adjustment ring is provided with a plurality of adjustment arc grooves, and an adjustment arc block is slidably installed in each of the adjustment arc grooves. The adjustment arc block is fixed to the inner wall of the adjustment arc groove by bolts installed thereon, and the connecting rod is rotatably installed on the outer wall of the adjustment arc block.

[0015] In a second aspect, the present invention provides a gear grinding method for machining a mechanical gear, comprising a gear grinding device for machining a mechanical gear, and further comprising the following steps: S1. The gear to be processed is placed on a connecting cylinder located below and fixed on a rotating circular table. Then, multiple inner support rollers on the connecting cylinder are driven by an external structure to perform centrifugal adjustment, thereby supporting and fixing the internal spline teeth below the gear. The gear is initially fixed and the axis of the connecting cylinder is aligned and 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 multiple inner support rollers on the connecting cylinder through the external structure to make centrifugal adjustments and support and fix the internal spline key teeth above the gear. Use the gear that has been preliminarily positioned to reposition the axis position of the connecting cylinder. The key teeth supported by the upper and lower inner support rollers are staggered. S3. The detection unit is used to detect whether the axis positions of the two connecting cylinders coincide with each other. If they coincide with each other, it indicates that the influence of the key teeth on the positioning and fixing of the gears is within the preset value. At this time, the two connecting cylinders can be butt-connected through the connection unit. If they do not coincide with each other, it indicates that the influence of the key teeth on the positioning and fixing of the gears exceeds the preset value. It is necessary to re-switch the contact position between the inner support roller and the key teeth, and then re-position and detect again until the two connecting cylinders are in a coaxial state. S4. After the gear is fixed and 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.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention supports and fixes the internal spline teeth of the gear through the centrifugal or centripetal movement of the inner support roller, and at the same time utilizes the axial positioning of the upper and lower connecting cylinders and the detection function of the detection part to sequentially transmit the positioning and verify the fixing accuracy of the gear, avoiding mismeasurement caused by synchronization of upper and lower errors, and can self-check the fixing accuracy of the gear to ensure the coaxiality of the gear and the connecting cylinder, thereby significantly improving the accuracy and quality of the gear grinding process.

[0017] 2. The present invention can make the two docking rings in a coaxial state before the internal support is fixed through the monitoring core in the docking hole, and the laser emitted by the transmitter will pass through the detection core and be received by the receiver to form an information path, and then the axial position of the upper connecting tube will be re-positioned. When the axial positions of the upper and lower connecting tubes deviate, the shear force between the two docking rings will cause squeezing of the sleeve and the detection core, causing the transparent state of the detection core to change and blocking the passage of the laser, disconnecting the information path, so that the state of the axial position of the two connecting tubes can be detected by whether the information path is connected or not, thereby achieving the purpose of detecting the internal support error. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 is a side view of the present invention; Figure 3 For the present invention Figure 2 Cross-sectional view along AA; Figure 4 For the present invention Figure 2 Cross-sectional view along BB; Figure 5 For the present invention Figure 3 Enlarged view of point C in the figure; Figure 6 This is a schematic diagram of the force on the gear after being fixed; Figure 7 This is a schematic diagram of the two inner supporting parts of the present invention after being disassembled; Figure 8 This is a schematic diagram of the three-dimensional structure of the present invention after the two inner supporting parts are disassembled; Figure 9 is a schematic diagram of an internal spline gear of the present invention; Figure 10 Schematic diagram of the stepped hole gear of the present invention.

[0019] In the figure: 1. Processing table; 2. Gear grinding assembly; 3. Gear; 4. Carrying platform; 5. Connecting tube; 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 aligner; 18. Sleeve; 19. Detection core; 20. Adjusting arc groove. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 10 The present invention provides a technical solution: a gear grinding device for machining mechanical gears, comprising a machining table 1, and further comprising: A rotating circular table is installed on the processing table 1 and can be rotated and adjusted; Two inner supporting parts, the inner supporting parts include a supporting platform 4 and a connecting tube 5 connected in one piece, and the opposite ends of the two connecting tubes 5 can be connected to each other through the connecting part, and one of the supporting platforms 4 is fixed on the rotating round table; A plurality of inner support rollers 10 are mounted 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; A detection unit is provided between the two connecting tubes 5, and is used to detect whether the axis positions of the two connecting tubes 5 are on the same axis; A gear grinding assembly 2 is mounted on a machining table 1 and is used to perform gear grinding on a gear 3 .

[0022] When the gear grinding device is in use, the gear 3 to be processed is sleeved on the connecting cylinder 5 located below and fixed on the rotating circular table, and then the multiple inner support rollers 10 on the connecting cylinder 5 are driven by the external structure to perform centrifugal adjustment, and the internal spline key teeth below the gear 3 are supported and fixed, and the gear 3 is initially fixed while the axis of the connecting cylinder 5 is in a coincidence state and initially positioned. In this way, since the position of the connecting cylinder 5 below is determined, the gear 3 and the connecting cylinder 5 can be kept in a coaxial state by means of internal support fixation, that is, the gear 3 is initially positioned by the determined axis position; Since there may be a certain error between the internal spline teeth of the gear 3, it is necessary to further demonstrate its positioning accuracy. Therefore, another connecting cylinder 5 is inserted into the spline hole from the top of the gear 3 and contacts with the connecting cylinder 5 below, and then the multiple inner support rollers 10 on the connecting cylinder 5 are driven by the external structure to perform centrifugal adjustment, and the internal spline teeth above the gear 3 are supported and fixed, and the gear 3 that has been preliminarily positioned is used to reposition the axial position of the connecting cylinder 5, and the teeth supported by the upper and lower inner support rollers 10 are staggered with each other, so that the connecting cylinder 5 installed later is axially positioned by the determined gear 3. At the same time, the staggered teeth contacted by the upper and lower inner support rollers 10 can also avoid the synchronization of the upper and lower errors and the elimination of the offset error. Figure 6 As shown, the contact points of the upper and lower inner support rollers 10 are point a and point b respectively. In this way, by sequentially transferring the positioning, after the upper connecting cylinder 5 is installed and positioned, by detecting 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, thereby achieving the effect of self-test and further improving the grinding accuracy and processing quality of the gear 3. The specific detection is as follows: The detection part detects whether the axial positions of the two connecting cylinders 5 coincide with each other. If they coincide with each other, 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 docked and connected through the connecting part. The fixing of the gear 3 at the upper and lower positions can make its fixing effect more stable, thereby improving the processing efficiency. If the two do not coincide with each other, it means that the influence of the key teeth on the positioning and fixing of the gear 3 exceeds the preset value, and the contact position of the inner support roller 10 and the key teeth needs to be re-switched, and then re-positioned and detected until the two connecting cylinders 5 are in a coaxial state. In this way, after the gear 3 is fixed and installed, it can be ground by the gear grinding assembly 2. At the same time, the relative position of the gear 3 and the gear grinding assembly 2 can be adjusted by rotating the rotating platform until the processing is completed.

[0023] It is worth mentioning that the number of the inner support rollers 10 on the outer walls of the two connecting cylinders 5 is preferably set to three, because the support surface supported by the three inner support rollers 10 is a triangle. The stability of the triangle can not only improve the support accuracy, but also, if an error occurs in the support of one point, the change of the error is not easily masked by the other two support points. Compared with four, five or even more support points, the more support points there are, the greater the effect of the support points adjacent to the error point on eliminating the error. Taking this case as an example, if there is an error in one of the three supporting points, the axis position offset of the final connecting tube 5 will be more obvious. If there are more supporting points, the error of one point will not have a greater impact on the axis position offset of the connecting tube 5, because the remaining adjacent points will add compensation for the error of this position, which may cause the positioning accuracy of the final connecting tube 5 to be inconsistent with the actual situation, thereby forming accuracy in the paper sense. Therefore, the inner support roller 10 is preferably set to 3.

[0024] In one of the more preferred embodiments, an internal support method of the internal support roller 10 is provided; The outer wall of the supporting platform 4 is fixed with a fixed ring 7 which is sleeved on the outer wall of the connecting tube 5. The outer wall of the connecting tube 5 is installed with an adjusting ring 6 which can be slidably adjusted. The outer walls of the adjusting ring 6 and the fixed 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.

[0025] A screw 15 rotatably connected to the docking ring 11 is installed inside the supporting platform 4, the screw 15 passes through and is rotatably connected to the fixing ring 7, the screw 15 passes through and is threadedly connected to the adjusting ring 6, and a servo motor for driving the screw 15 to rotate is also installed on the outer wall of the supporting platform 4.

[0026] See Figure 3 and Figure 4When it is necessary to adjust the centrifugal or centripetal movement of the inner support roller 10, the screw 15 is controlled to rotate by the servo motor, and the transmission between the threads can drive the adjustment ring 6 to slide vertically on the outer wall of the connecting tube 5, thereby driving the inner support roller 10 to move centrifugally or centripetally through the connecting rod 9, so as to achieve the above-mentioned purpose of internal support positioning of the internal spline of the gear 3.

[0027] It is worth mentioning that the inner support rollers 10 on the upper and lower connecting cylinders 5 are independently controlled, so that when the different inner holes of the gear 3 are fixed, the purpose of adaptive adjustment can be achieved, such as Figure 10 As shown, it is shown as a stepped hole gear 3 (for example, a gear in a motor that needs to be equipped with a bearing, so a stepped hole needs to be opened on the gear). For such a hole, the purpose of internal support and fixation can be achieved, and the purpose of detecting the coaxiality between the stepped holes can also be achieved.

[0028] In one of the more preferred embodiments, an implementation of a detection unit is provided; The detection unit includes a docking ring 11 integrally formed at the end of the connecting tube 5. The docking ring 11 has a plurality of docking holes 16 distributed in a circular array. When the two docking rings 11 are fitted together, the corresponding docking holes 16 together form a light-emitting channel. The outer walls of the docking rings 11 located at the two exits of the light-emitting channel are embedded with laser aligners 17, and the two laser aligners 17 serve as a transmitter and a receiver respectively. The detection part also includes a monitoring core inserted into the docking hole 16. The monitoring core is composed of a sleeve 18 and a detection core 19 that are arranged on each other. When the detection core 19 is in a normal state, it is in a transparent state and can allow laser to pass through. When the detection core 19 is squeezed, the transparent state will change and block the laser from passing through.

[0029] For details, please refer to Figure 3 、 Figure 5 and Figure 8 When the upper connecting tube 5 is inserted into the spline hole in the gear 3, before the internal support is fixed, the two docking rings 11 are first fitted together, and the corresponding docking holes 16 on them form a light transmission channel. The monitoring core in the docking hole 16 plays a preliminary positioning role for the two docking rings 11. In this way, the two docking rings 11 are in a coaxial state before the internal support is fixed, and the laser emitted by the transmitter will pass through the detection core 19 and be received by the receiver, forming an information path; Then, the inner support roller 10 thereon starts to move centrifugally, supporting and fixing the inner spline of the gear 3, that is, repositioning the axial position of the upper connecting cylinder 5. When the axial positions of the upper and lower connecting cylinders 5 deviate, the shear force between the two docking rings 11 will squeeze the sleeve 18 and the detection core 19, causing the transparency of the detection core 19 to change and block the passage of the laser, disconnecting the information path. In this way, the state of the axial positions of the two connecting cylinders 5 can be detected by whether the information path is connected or not, thereby achieving the purpose of detecting the inner support error. In one of the more preferred embodiments, a first embodiment of the detection core 19 is provided; The detection core 19 is a glass column made of transparent glass core material. When it is in its intact state, it is made of transparent material, and the path of the laser will not change when it passes through the middle. However, when it is squeezed and broken or shattered, when the laser passes through it again, it will cause reflection or refracting, thereby affecting the path of the laser, thereby achieving the purpose of disconnecting the above-mentioned information path.

[0030] Moreover, the glass column has a certain hardness, which can play a role in the preliminary positioning of the two docking rings 11. At the same time, it is also relatively brittle and will easily break or shatter when the two docking rings 11 apply shear force to it, thereby ensuring the precision and accuracy of the test results.

[0031] In one of the more preferred embodiments, a second embodiment of the detection core 19 is provided; The detection core 19 is a glass tube sandwich, and the inside and outside of the sandwich are peroxides and lipid compounds respectively. The gap between the detection core 19 and the sleeve 18 is also filled with fluorescent dye. This design is similar to that of a fluorescent stick. It is in a transparent state when it is not subjected to external bending or shear stress. When it is subjected to external force, the glass tube sandwich will break and the hydrogen peroxide solution will mix with the ester compound. The hydrogen peroxide causes the ester compound to undergo an oxidation reaction to generate unstable intermediates. These intermediates release energy when they decompose and transfer the energy to the fluorescent dye molecules. After the fluorescent dye molecules absorb energy, the electrons jump from the ground state to the excited state. The electrons in the excited state are unstable and release energy in the form of photons when they quickly return to the ground state, thereby generating fluorescence. The fluorescence is then used to block the laser, which can also achieve the purpose of disconnecting the above-mentioned information path.

[0032] In one of the more preferred embodiments, the two docking rings 11 are both made of magnetic materials and form magnetic circles that can attract each other.

[0033] The two docking rings 11 are designed to be made of magnetic material. On the one hand, this is to make the two docking rings 11 more stable during the initial docking. Moreover, due to the characteristics of the magnetic rings after attraction, it is more difficult to separate the two directly along the axis, but it is relatively easy if the two are staggered. In this way, when the connecting tube 5 located above is fixed in the inner support, the docking rings 11 are more likely to be staggered along the horizontal plane to avoid being directly broken apart. The shear force applied to the monitoring core will be more obvious, and it also provides sufficient limiting force for the subsequent connection part to connect the two connecting tubes 5.

[0034] In one of the more preferred embodiments, an implementation of a connecting portion is provided; The connecting part includes a through hole opened at the axial center position of the lower connecting tube 5, and a connecting shaft 14 that can be vertically moved and rotationally adjusted is installed in the through hole. A section of the outer wall of the connecting shaft 14 near the top is provided with a thread, and a sleeve hole 12 and a screw hole 13 are opened inside the upper connecting tube 5. The inner diameter of the sleeve hole 12 is larger than the inner diameter of the screw hole 13, and the inner wall of the screw hole 13 is provided with a thread groove that can cooperate with the thread of the outer wall of the connecting shaft 14.

[0035] For details, please refer to Figure 3 When the axes of the upper and lower connecting cylinders 5 coincide, the connecting shaft 14 is driven to move vertically and rotate simultaneously by an external structure, such as a rotary oil cylinder, so that the thread at the top position is screwed into the screw hole 13. The upper and lower connecting cylinders 5 are connected and fixed by the cooperation between the two, thereby internally supporting and fixing the gear 3 at the upper and lower positions. At the same time, the cooperation of the threads can also make the upper support platform 4 close the top opening of the spline hole of the gear 3, so that a closed space is formed in the spline hole of the gear 3, preventing debris or coolant from entering the interior and affecting it during the gear grinding process.

[0036] In one of the more preferred embodiments, the outer wall of the adjusting ring 6 is provided with a plurality 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 thereon, and the connecting rod 9 is rotatably installed on the outer wall of the adjusting arc block 8.

[0037] See Figure 7 and Figure 8 Due to the number of spline teeth in the gear 3, the contact position between the inner support roller 10 and the key teeth may be different. Therefore, the position of the arc block 8 is moved to change the plane where the connecting rod 9 and the inner support roller 10 are located, so that each inner support roller 10 can contact the key teeth at the same position, that is, the position between two key teeth, thereby ensuring the accuracy of the inner support. Figure 4 shown.

[0038] A gear grinding method for machining mechanical gears, comprising a gear grinding device for machining mechanical gears, further comprising the following steps: S1. The gear 3 to be processed is placed on the connecting cylinder 5 located below and fixed on the rotating circular table. Then, the multiple inner support rollers 10 on the connecting cylinder 5 are driven by the external structure to perform centrifugal adjustment, and the internal spline teeth below the gear 3 are supported and fixed. The gear 3 is initially fixed and the axis of the connecting cylinder 5 is aligned and initially positioned. 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 adjustments through the external structure, and support and fix the internal spline key teeth above the gear 3. Use the preliminarily positioned gear 3 to reposition the axial position of the connecting cylinder 5, and the key teeth supported by the upper and lower inner support rollers 10 are staggered. S3. The detection unit is used to detect whether the axial positions of the two connecting cylinders 5 coincide with each other. If they coincide with each other, 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 butt-connected through the connection unit. If they do not coincide with each other, it means that the influence of the key teeth on the positioning and fixing of the gear 3 exceeds the preset value. It is necessary to re-switch the contact position between the inner support roller 10 and the key teeth, and then re-position and detect again until the two connecting cylinders 5 are in a coaxial state. S4. After the gear 3 is fixed and installed, it can be subjected to gear grinding processing by the gear grinding assembly 2. At the same time, the relative position of the gear 3 and the gear grinding assembly 2 is adjusted by rotating the rotating platform until the processing is completed.

[0039] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and drawings can also be directly processed according to existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so no specific description will be given here.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A gear grinding device for machining mechanical gears, comprising a machining table, characterized in that: Also includes: A rotating circular table, which is mounted on the processing table and can be rotated and adjusted; Two inner support parts, each of which includes a supporting platform and a connecting cylinder connected in one piece, and opposite ends of the two connecting cylinders can be connected to each other through a connecting part, and one of the supporting platforms is fixed on the rotating circular table; A plurality of inner support rollers mounted on the connecting cylinder and capable of centrifugal or centripetal movement adjustment, 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 portion provided between the two connecting tubes, the detection portion being used to detect whether the axis positions of the two connecting tubes are on the same axis; A gear grinding assembly is mounted on a processing table and is used for performing gear grinding on a gear.

2. The gear grinding device for mechanical gear machining according to claim 1, characterized in that: The outer wall of the supporting platform is fixed with a fixing ring which is sleeved on the outer wall of the connecting tube. The outer wall of the connecting tube is installed with an adjusting ring which 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 mechanical gear machining according to claim 1, characterized in that: The detection portion includes a docking ring integrally formed at the end of the connecting tube, and a plurality of docking holes are distributed in a circular array on the docking ring. When two docking rings are fitted together, the corresponding docking holes together form a light-emitting channel. Laser alignment devices are embedded and installed on the outer walls of the docking rings at the two exit positions of the light-emitting channel, and the two laser alignment devices serve as a transmitter and a receiver respectively. The detection part also includes a monitoring core inserted into the docking hole. The monitoring core is composed of a sleeve and a detection core that are arranged on each other. When the detection core is in a normal state, it is in a transparent state and can allow laser to pass through. When the detection core is squeezed, the transparent state will change and block the laser from passing through.

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

5. The gear grinding device for mechanical gear machining according to claim 3, characterized in that: The detection core is a glass tube sandwich, and the inside and outside of the sandwich are respectively filled with peroxide and lipid compounds. The gap between the detection core and the sleeve is also filled with fluorescent dye.

6. The gear grinding device for mechanical gear machining according to claim 3, characterized in that: The two docking rings are both made of magnetic materials and form magnetic circles that can attract each other.

7. The gear grinding device for mechanical gear machining according to claim 1, characterized in that: The connecting part includes a through hole located at the axial center position of the lower connecting tube, and a connecting shaft that can be vertically moved and rotatably adjusted is installed in the through hole. A section of the outer wall of the connecting shaft near the top is provided with a thread, and a sleeve hole and a screw hole are provided inside the upper connecting tube. 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 thread groove that can cooperate with the thread of the outer wall of the connecting shaft.

8. The gear grinding device for machining mechanical gears according to claim 2, wherein: A screw rod rotatably connected to the docking ring is installed through the interior of the supporting platform, the screw rod penetrates and is rotatably connected to the fixing ring, the screw rod penetrates and is threadedly connected to the adjusting ring, and a servo motor for driving the screw rod to rotate is also installed on the outer wall of the supporting platform.

9. The gear grinding device for machining mechanical gears according to claim 2, characterized in that: The outer wall of the adjustment ring is provided with a plurality of adjustment arc grooves, and an adjustment arc block is slidably installed in each of the adjustment arc grooves. The adjustment arc block is fixed in contact with the inner wall of the adjustment arc groove by bolts installed thereon, and the connecting rod is rotatably installed on the outer wall of the adjustment arc block.

10. A gear grinding method for machining mechanical gears, comprising the gear grinding device for machining mechanical gears according to any one of claims 1 to 9, characterized in that: The following steps are also included: S1. Place the processed gear sleeve on the connecting cylinder located below and fixed on the rotating circular table. Then, drive the multiple inner support rollers on the connecting cylinder through the external structure to perform centrifugal adjustment and support and fix the internal spline teeth below the gear. While preliminarily fixing the gear, make it coincide with the axis of the connecting cylinder and preliminarily position it. S2. Insert another connecting cylinder into the spline hole from above the gear and make contact with the connecting cylinder below. Then, drive multiple inner support rollers on the connecting cylinder to perform centrifugal adjustment through the external structure, and support and fix the internal spline key teeth above the gear. Use the gear that has been preliminarily 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 is used to detect whether the axis positions of the two connecting cylinders coincide with each other. If they coincide with each other, it indicates that the influence of the key teeth on the positioning and fixing of the gears is within the preset value. At this time, the two connecting cylinders can be butt-connected through the connection unit. If they do not coincide with each other, it indicates that the influence of the key teeth on the positioning and fixing of the gears exceeds the preset value. It is necessary to re-switch the contact position between the inner support roller and the key teeth, and then re-position and detect again until the two connecting cylinders are in a coaxial state. S4. After the gear is fixed and 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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