A gear ring fixing device for processing inner hole of gear ring

Abstract

The present invention relates to the technical field of gear ring processing tooling, and specifically to a gear ring fixing device for processing the inner hole of the gear ring, comprising a radial positioning component, an axial positioning component, a limit component and a back pressure component; the radial positioning component is connected to a fixed disk; the limit component is respectively connected to the radial positioning component and the axial positioning component, and the back pressure component is connected to the radial positioning component; by dividing a rotating clamping jaw providing a radial clamping effect into a rigid jaw and a flexible jaw, a radial clamping force is provided to a thin-walled gear ring at the same time, and the axial positioning component is used to press the end face of the thin-walled gear ring, the rotating clamping jaw has a rotating tendency when subjected to vibration, so that the lower pressing jaw produces a greater pressing force on the end face of the gear ring, and at this time the flexible jaw will push out to provide a greater radial clamping force on the outer ring of the gear ring; the problem that the thin-walled gear ring will be deformed when subjected to excessive clamping force during cutting, and the gear ring will deviate under vibration and impact when subjected to insufficient clamping force, resulting in a decrease in processing accuracy is solved.

Description

Technical Field

[0001] The invention relates to the technical field of gear ring processing tooling, and in particular to a gear ring fixing device for processing a gear ring inner hole. Background Art

[0002] When processing the inner hole of the gear ring, in order to ensure the processing accuracy of the gear ring, it is necessary to accurately position the gear ring during processing and ensure stability during the processing. At this time, a gear ring fixing device is required. At present, a gear ring inner hole disk or a gear ring clamp is usually used to fix the gear ring. The gear ring inner hole disk usually corresponds to the model of the gear ring to be processed, and cannot fix other models of gear rings. Its positioning accuracy is high, and the gear ring clamp can adapt to different models of gear rings for adjustment.

[0003] The gear ring fixture usually presses the end face to prevent the gear ring from shifting during the cutting process. The gear ring needs to be manually positioned before cutting. After positioning, the gear ring end face is pressed with a fixing part to fix the gear ring. On the one hand, manual positioning will cause inaccurate positioning of the gear ring, and during the cutting process, the tool will generate a certain thrust on the gear ring, which will cause the gear ring to shift, resulting in a decrease in cutting accuracy. The prior art has proposed a good solution to this problem, such as a fixing device for machining the inner hole of an automobile gear ring with patent publication number CN214264693U, which double fixes the end face of the gear ring and the circumference of the gear ring to increase the clamping force, and through the self-centering effect of the radial fixing mechanism, the center of the gear ring and the center of the fixture are accurately positioned to ensure processing accuracy.

[0004] Although the existing technology has solved the problems of inaccurate positioning during the clamping process and the deviation of the gear ring during the cutting process, resulting in a decrease in processing accuracy, the following problems still exist: when processing thin-walled gear rings, if the radial clamping force provided to the outer ring of the gear ring is too large, it will cause elastic deformation of the gear ring. Especially during heat finishing, the roundness error will become larger after being subjected to excessive radial clamping force, resulting in processing errors. When flexible parts are used for radial clamping or the radial clamping force provided is insufficient, the gear ring will be vibrated and impacted due to the cutting process, thereby causing the gear ring to deviate, which will also lead to a decrease in processing accuracy.

[0005] In view of the above situation, in order to overcome the above technical problems, the present invention designs a gear ring fixing device for processing the inner hole of the gear ring. Summary of the invention

[0006] The present invention provides a gear ring fixing device for processing the inner hole of a gear ring, which solves the problem that the thin-walled gear ring will be deformed when subjected to excessive radial clamping force during cutting, and the gear ring will deviate under vibration and impact when subjected to insufficient radial clamping force, resulting in a decrease in processing accuracy. The present invention divides the rotating clamping jaws that provide radial clamping effect into rigid jaws and flexible jaws, provides radial clamping force to the thin-walled gear ring at the same time, and uses an axial positioning assembly to press the end face of the thin-walled gear ring. When subjected to vibration, the rotating clamping jaws tend to rotate, so that the lower pressure jaws that provide the axial clamping force generate a greater pressing force on the end face of the gear ring, and at this time, the flexible jaws press the outer ring of the gear ring under the back pressure assembly to provide a greater radial clamping force, thereby preventing the gear ring from deviating and causing a decrease in processing accuracy.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A gear ring fixing device for processing the inner hole of a gear ring comprises a fixed disk, and also comprises a radial positioning assembly, an axial positioning assembly, a limit assembly and a back pressure assembly; the radial positioning assembly is connected to the fixed disk; the limit assembly is respectively connected to the radial positioning assembly and the axial positioning assembly, and when the limit assembly presses down on the radial positioning assembly, the radial positioning assembly flips and pushes the gear ring toward the center of the fixed disk; the back pressure assembly is connected to the radial positioning assembly, and when the gear ring is impacted by the cutting force, the radial positioning assembly has a reverse flipping trend to squeeze the back pressure assembly downward, and the back pressure assembly is subjected to the downward pressure to drive the axial positioning assembly to press the end face of the gear ring downward.

[0009] Preferably, the fixed plate includes an upper plate and a lower plate; three downward pressure grooves are provided in a circumferential array on the outer ring of the upper plate, and are connected to the lower plate by bolts; the axial positioning assembly includes a downward pressure claw, a downward pressure spring, a connecting ring and an adsorption groove; the three downward pressure claws are respectively slidably installed in the downward pressure grooves; the downward pressure spring is connected between the downward pressure claw and the downward pressure groove; the connecting ring is connected between every two downward pressure claws, and a limiting hole is provided on the connecting ring; the adsorption groove is provided on the upper plate.

[0010] In the above scheme, the end face of the gear ring is fixed by setting a downward pressure claw. Since the end face of the thin-walled gear ring can withstand greater force than its outer ring wall without deformation, the end face is pressed during fixation to ensure that the gear ring will not slide. At the same time, the downward pressure action of the downward pressure claw can drive the rotating clamping jaw to clamp the gear ring, so that the gear ring can be quickly positioned and fixed, and under the action of the connecting ring, the three downward pressure claws can generate uniform downward pressure on the gear ring.

[0011] Preferably, the lower pressure claw includes a lower pressure claw body, a telescopic groove, a telescopic screw groove, a telescopic bolt, a telescopic pressure claw and a telescopic spring; the lower pressure claw body is installed in the lower pressure groove; the telescopic groove is opened at the top of the lower pressure claw body; the telescopic screw groove is opened at the tail of the telescopic groove; the telescopic bolt is installed in the telescopic screw groove; the telescopic pressure claw is slidably installed in the telescopic groove; the telescopic spring is connected between the telescopic pressure claw and the telescopic groove.

[0012] In the above scheme, by setting the lower pressure claw as a retractable structure, it is convenient to place gear rings of different sizes. After the gear ring is placed, the telescopic pressure claw can be tightened by adjusting the telescopic bolt, so that the telescopic spring can be stretched, so that the telescopic pressure claw can be pressed on the end face of the thin-walled gear ring after being extended, and the length of the telescopic pressure claw can be adjusted according to the thickness of the gear ring, so as to adjust the clamping area and ensure the clamping effect. After the positioning is completed, the connecting ring can slide in the adsorption groove during the downward pressing process of the lower pressure claw, so that the adsorption groove generates suction on the gear ring, further increasing the fixing effect.

[0013] Preferably, an adjusting slot is provided at the center of the lower plate; a flip slot is provided at the outer ring of the upper plate; the radial positioning assembly includes a pressing slider, a flip spring and a rotating clamp; the pressing slider is slidably installed in the adjusting slot, and a connecting slot is provided at the outer ring of the pressing slider; the flip spring is connected between the adjusting slot and the pressing slider; the rotating clamp includes a connecting part, a rotating part and a clamping part; the connecting part is connected to the connecting slot; the rotating part is rotatably installed in the flip slot; and the clamping part is connected to the rotating part.

[0014] In the above scheme, when the gear ring is pressed against the fixed plate, a downward pressure will be generated on the pressing slider. At this time, the pressing slider will move downward and press the connecting part through the connecting groove, so that the rotating clamping claw can rotate, and the gear ring is centered and adjusted to complete the precise positioning and clamp the gear ring, providing a radial clamping force to the gear ring, and the radial clamping force is oblique, which can generate a downward pulling force on the gear ring while providing the radial clamping force, thereby cooperating with the end face clamping of the axial positioning component to prevent the gear ring from being offset.

[0015] Preferably, the clamping part includes an outer claw, a telescopic slot, an elastic inner claw, a radial pressure spring and a pressure piece; the outer claw is connected to the rotating part; the telescopic slot is opened in the outer claw and is a bent structure; the elastic inner claw is installed in the telescopic slot, and a spring hole is opened in the elastic inner claw; the radial pressure spring is connected between the spring hole and the telescopic slot; the pressure piece is installed in the telescopic slot.

[0016] In the above scheme, the elastic inner claw can provide an additional clamping force while the outer claw provides the clamping force, thereby improving the fixing effect, and because the elastic inner claw can provide a certain shock absorption effect, it can prevent the gear ring from jumping; when the reaction component and the rotating clamping claw are squeezed, the outer claw has a tendency to loosen. Although the loosening tendency of the outer claw can increase the end surface pressure so that the gear ring remains fixed, in order to avoid loosening caused by extreme working conditions, the elastic inner claw can be pushed out when squeezed, thereby increasing the radial clamping force on the gear ring, and because it is an elastic structure, it can undergo a certain degree of deformation when the clamping force is increased to avoid damage to the gear ring.

[0017] Preferably, a sliding groove is provided at the side wall of the spring hole; an extrusion slope is provided at the tail of the elastic inner claw; the top pressure piece includes a top pressure slider and a top pressure spring; the top pressure slider is slidably installed in the telescopic groove, and a top pressure slope is provided on the top; the top pressure spring is connected between the top pressure slider and the telescopic groove.

[0018] In the above scheme, this setting method can avoid movement interference between the two springs of the top pressure piece, and under the action of the top pressure spring, the top pressure slider will provide continuous pressing force to the counter-pressure assembly, so that the counter-pressure assembly can press down the lower pressure claw, so that the lower pressure claw presses the end face of the gear ring.

[0019] Preferably, the limiting assembly includes a locking screw groove, a locking bolt, a pressing screw groove and a pressing bolt; the locking screw groove includes an upper screw groove and a lower screw groove; the upper screw groove is opened at the center of the pressing slider; the lower screw groove is opened at the center of the lower plate; the locking bolt is connected between the upper screw groove and the lower screw groove; the circular array of pressing screw grooves is opened on the lower plate, and its axis coincides with the axis of the limiting hole; the pressing bolt is installed in the pressing screw groove and the limiting hole, and the top diameter of the pressing bolt is larger than the diameter of the limiting hole.

[0020] In the above scheme, the downward pressure slider can be kept fixed by the tightening action of the locking bolt, and the fixing effect can be increased due to the threaded action between the locking bolt and the locking screw groove, so that the rotating clamping jaw can maintain the clamping effect, and the connecting ring can be limited by the downward pressure bolt, thereby achieving the limiting effect on the downward pressure claw, so that the downward pressure claw maintains the clamping effect.

[0021] Preferably, the back-pressure assembly comprises an adjusting screw groove and a back-pressure bolt; the adjusting screw groove is provided on the connecting ring; and the back-pressure bolt is installed in the adjusting screw groove.

[0022] In the above scheme, since the counter-pressure bolt and the rotating clamp maintain a tightening effect, the counter-pressure bolt can provide a tightening force on the rotating clamp, thereby ensuring the radial fixing effect of the rotating clamp on the gear ring. When the gear ring vibrates under the action of the cutting force, when the rotating clamp is impacted and tends to relax, it will generate downward pressure on the counter-pressure bolt, and the counter-pressure bolt will drive the connecting ring to press down together, so that the downward pressure claw increases the clamping force on the end face of the gear ring, thereby preventing the gear ring from sliding.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. Compared with the existing gear ring fixing device, the present invention can accurately position the gear ring to the center position of the fixed disk by setting a radial positioning component, and the rotating clamping claw is a combined structure of a rigid claw and a flexible claw. The rigid claw can fix the thin-walled gear ring, and the flexible claw is pressed on the outer ring of the gear ring under the action of the radial pressure spring. The flexible claw can further improve the clamping force on the basis of the rigid claw without causing damage to the gear ring, and can also absorb the vibration generated by the gear ring during cutting, thereby improving the processing accuracy; and when the gear ring vibrates and squeezes the rotating clamping claw, the rigid outer claw will drive the flexible claw to flip, and at this time, the rotating clamping claw will generate an extrusion force with the back pressure component, so that the flexible claw is further pushed out, thereby increasing the radial clamping force on the gear ring, avoiding the gear ring from deflecting, and thereby improving the processing accuracy.

[0025] 2. The present invention sets a back-pressure component. When the gear ring vibrates and causes the rotating clamping jaw to flip, the rotating clamping jaw will generate downward pressure on the back-pressure component, which in turn generates downward pressure on the downward pressure claw, thereby increasing the downward pressure and clamping effect on the end face of the gear ring, so that the force for fixing the gear ring mainly comes from the friction force generated by the downward pressure on the end face, thereby avoiding sliding deviation of the gear ring, and further avoiding the use of excessive radial clamping force to cause roundness error of the gear ring; and the height of the back-pressure component can be freely adjusted. On the one hand, it can ensure that the back-pressure component can adapt to and realize the back-pressure effect when facing gear rings of different thicknesses and diameters. On the other hand, since the height of the back-pressure bolt can be freely adjusted during the initial adjustment, the upward adjustment of the back-pressure bolt can provide a top pressure on the rotating clamping jaw, which is converted into a clamping force for the rotating clamping jaw to fix the gear ring, thereby improving the processing accuracy.

[0026] 3. The present invention provides an adsorption groove. When the lower pressure claw presses down to produce a pressing effect on the upper end surface of the gear ring, it will slide downward in the adsorption groove, thereby generating a negative pressure phenomenon in the adsorption groove, thereby achieving the effect of generating an adsorption force on the lower end surface of the gear ring. Combined with the downward pressure of the lower pressure claw, the gear ring can be pressed on the fixed disk and remain motionless when it is vibrated, while avoiding the occurrence of roundness error caused by increasing excessive radial clamping force, thereby improving the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is the overall structure diagram of the present invention;

[0029] Figure 2 It is a cross-sectional view of the internal structure of the present invention;

[0030] Figure 3 It is an exploded view of the connection between the pressing claw and the fixing plate of the present invention;

[0031] Figure 4 is a cross-sectional view of the present invention;

[0032] Figure 5 for Figure 4 A magnified view of the structure at center;

[0033] Figure 6 It is a schematic diagram of the connection between the rotating clamping jaw and the pressing slider of the present invention;

[0034] Figure 7 for Figure 4 A magnified view of the structure at B in the middle;

[0035] Figure 8 is a cross-sectional view of the rotating clamping jaw of the present invention;

[0036] Fig. 9 This is a motion trend diagram of the present invention when vibration occurs during cutting;

[0037] In the figure: 1, fixed plate; 11, upper plate; 111, lower pressure groove; 112, flip groove; 12, lower plate; 121, adjustment slide groove; 2, radial positioning assembly; 21, lower pressure slider; 211, connecting groove; 22, flip spring; 23, rotating clamping claw; 231, connecting part; 232, rotating part; 233, clamping part; 2331, outer claw; 2332, contraction groove; 2333, elastic inner claw; 23331, spring hole; 23332, sliding notch; 23333, extrusion slope; 2334, radial pressure spring; 2335, top pressure piece; 23351 , top pressure slider; 23352, top pressure spring; 23353, top pressure inclined plane; 3, axial positioning assembly; 31, down-pressure claw; 311, down-pressure claw body; 312, telescopic groove; 313, telescopic screw groove; 314, telescopic bolt; 315, telescopic pressure claw; 316, telescopic spring; 32, down-pressure spring; 33, connecting ring; 331, limiting hole; 34, adsorption groove; 4, limiting assembly; 41, locking screw groove; 42, locking bolt; 43, down-pressure screw groove; 44, down-pressure bolt; 5, counter-pressure assembly; 51, adjusting screw groove; 52, counter-pressure bolt; 6, gear ring. DETAILED DESCRIPTION

[0038] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0039] See also Figures 1 to 9 The present invention provides a gear ring fixing device for processing the inner hole of a gear ring, and the technical solution is as follows:

[0040] As a specific embodiment of the present invention, refer to Figure 1 and Figure 2 , a gear ring fixing device for processing the inner hole of a gear ring, comprising a fixed disk 1, and also comprising a radial positioning component 2, an axial positioning component 3, a limiting component 4 and a back pressure component 5; the radial positioning component 2 is connected to the fixed disk 1; the limiting component 4 is respectively connected to the radial positioning component 2 and the axial positioning component 3, when the limiting component 4 presses down the radial positioning component 2, the radial positioning component 2 flips and pushes the gear ring 6 toward the center of the fixed disk 1, and after the limiting component 4 is fixed, the axial positioning component 3 will be limited, thereby ensuring that the axial positioning component 3 can be kept pressed on the end face of the gear ring 6, and the friction force generated by the pressing is used to prevent the gear ring 6 from deviating and sliding under vibration; the back pressure component 5 is connected to the radial positioning component 2, when the gear ring 6 is impacted by the cutting force, the radial positioning component 2 generates a reverse flipping trend to squeeze the back pressure component 5 downward, and the back pressure component 5 is subjected to the downward pressure to drive the axial positioning component 3 to press the end face of the gear ring 6 downward, thereby increasing the friction between the gear ring 6 and the fixed disk 1, and preventing sliding and deviating under vibration.

[0041] As a specific embodiment of the present invention, refer to Figure 2 and Figure 3 The fixed plate 1 includes an upper plate 11 and a lower plate 12; three downward pressure grooves 111 are arranged in a circumferential array on the outer ring of the upper plate 11, and are connected to the lower plate 12 by bolts; the axial positioning assembly 3 includes a downward pressure claw 31, a downward pressure spring 32, a connecting ring 33 and an adsorption groove 34; the three downward pressure claws 31 are respectively slidably installed in the downward pressure groove 111. In order to further increase the friction force, the roughness of the lower end surface of the downward pressure claw 31 can be increased to ensure that the friction force is sufficient to prevent the gear ring 6 from slipping. At the same time, it is necessary to ensure that the hardness of the lower end surface of the downward pressure claw 31 is lower than the hardness of the gear ring 6 to avoid wear on the surface of the gear ring 6; the downward pressure spring 32 is connected between the downward pressure claw 31 and the downward pressure groove 111; the connecting ring 33 is connected between every two downward pressure claws 31, and a limiting hole 331 is arranged on the connecting ring 33; the adsorption groove 34 is arranged on the upper plate 11. The end face of the gear ring 6 is fixed by setting a downward pressure claw 31. Since the end face of the thin-walled gear ring 6 can withstand greater force without deformation than its outer ring wall, the end face is pressed during fixation to ensure that the gear ring 6 does not slide. At the same time, the downward pressure action of the downward pressure claw 31 can drive the rotating clamping claw 23 to clamp the gear ring 6, so that the gear ring 6 can be quickly positioned and fixed, and under the action of the connecting ring 33, the three downward pressure claws 31 can generate uniform downward pressure on the gear ring 6.

[0042] As a specific embodiment of the present invention, refer to Figure 4 and Figure 5The lower pressure claw 31 includes a lower pressure claw body 311, a telescopic groove 312, a telescopic screw groove 313, a telescopic bolt 314, a telescopic pressure claw 315 and a telescopic spring 316; the lower pressure claw body 311 is installed in the lower pressure groove 111; the telescopic groove 312 is opened at the top of the lower pressure claw body 311; the telescopic screw groove 313 is opened at the tail of the telescopic groove 312; the telescopic bolt 314 is installed in the telescopic screw groove 313; the telescopic pressure claw 315 is slidably installed in the telescopic groove 312; the telescopic spring 316 is connected between the telescopic pressure claw 315 and the telescopic groove 312, and the lower pressure claw 31 is pressed down after positioning is completed. The process can make the connecting ring 33 slide in the adsorption groove 34, so that the adsorption groove 34 generates suction on the gear ring 6, further increasing the fixing effect. In order to ensure the adsorption effect, the two side wall surfaces of the lower pressure claw 31 are set as rubber structures to ensure the sealing effect of the adsorption groove 34, so that a negative pressure effect can be generated in the adsorption groove 34 after the lower pressure claw 31 is pressed down. By setting the lower pressure claw 31 as a retractable structure, it is convenient to place the gear rings 6 of different sizes. After the gear ring 6 is placed, the telescopic pressure claw 315 can be tightened by adjusting the telescopic bolt 314, so that the telescopic spring 316 can be stretched, so that the telescopic pressure claw 315 can be pressed on the end face of the thin-walled gear ring 6 after being extended, and the length of the telescopic pressure claw 315 can be adjusted according to the thickness of the gear ring 6, so as to adjust the clamping area and ensure the clamping effect.

[0043] As a specific embodiment of the present invention, refer to Figure 2 , Figure 4 and Figure 6The center of the lower plate 12 is provided with an adjusting slot 121; the outer ring of the upper plate 11 is provided with a flip slot 112; the radial positioning assembly 2 includes a pressing slider 21, a flip spring 22 and a rotating clamp 23; the pressing slider 21 is slidably installed in the adjusting slot 121, and the outer ring of the pressing slider 21 is provided with a connecting slot 211; the flip spring 22 is connected between the adjusting slot 121 and the pressing slider 21; the rotating clamp 23 includes a connecting portion 231, a rotating portion 232 and a clamping portion 233; the connecting portion 231 is connected to the connecting slot 211, and the connecting portion 231 can be driven to move by sliding the connecting slot 211 up and down, at which time the rotating clamp 23 will be flipped in the form of a lever to achieve a clamping effect; the rotating portion 232 is rotatably installed in the flip slot 112; the clamping portion 233 is connected to the rotating portion 232. When the gear ring 6 is pressed onto the fixed disk 1, a downward pressure will be generated on the pressing slider 21. At this time, the pressing slider 21 will move downward and press the connecting part 231 through the connecting groove, so that the rotating clamping claw 23 can rotate, and the gear ring 6 is centered and adjusted to complete the precise positioning and clamp the gear ring 6, providing a radial clamping force to the gear ring 6, and the radial clamping force is oblique, which can generate a downward pulling force on the gear ring 6 while providing the radial clamping force, thereby cooperating with the end face clamping of the axial positioning assembly 3, so that the gear ring 6 will not be offset.

[0044] As a specific embodiment of the present invention, refer to Figure 6 , Figure 7 and Figure 8The clamping part 233 includes an outer claw 2331, a contraction groove 2332, an elastic inner claw 2333, a radial pressure spring 2334 and a pressing piece 2335; the outer claw 2331 is connected to the rotating part 232, and the outer claw 2331 is a rigid structure, which can provide a limiting and fixing effect when it comes into contact with the ring gear 6; the contraction groove 2332 is opened in the outer claw 2331 and is a bending structure; the elastic inner claw 2333 is installed in the contraction groove 2332, and a spring hole 23331 is opened in the elastic inner claw 2333; the radial pressure spring 2334 is connected between the spring hole 23331 and the contraction groove 2332; the pressing piece 2335 is installed in the contraction groove 2332. The elastic inner claw 2333 can provide an additional clamping force while the outer claw 2331 provides the clamping force, thereby improving the fixing effect. Since the fixing effect is based on the rigid fixing effect of the outer claw 2331, even if the elastic inner claw 2333 undergoes a certain degree of deformation, it will not affect the normal fixation of the ring gear 6, and will not cause the ring gear 6 to shift. In addition, since the elastic inner claw 2333 can provide a certain shock absorption effect, the ring gear 6 can be prevented from jumping. When the reaction component and the rotating clamp 23 are squeezed, the outer claw 2331 tends to loosen. Although the loosening tendency of the outer claw 2331 can increase the end surface pressure so that the ring gear 6 remains fixed, in order to avoid loosening caused by extreme working conditions, the elastic inner claw 2333 can be ejected when squeezed, thereby increasing the radial clamping force on the ring gear 6. Moreover, since it is an elastic structure, it can undergo a certain degree of deformation when the clamping force is increased to avoid damage to the ring gear 6.

[0045] As a specific embodiment of the present invention, refer to Figure 7 and Figure 8 A sliding groove 23332 is provided at the side wall of the spring hole 23331; an extrusion slope 23333 is provided at the tail of the elastic inner claw 2333; the pressing piece 2335 includes a pressing slider 23351 and a pressing spring 23352; the pressing slider 23351 is slidably installed in the contraction groove 2332, and a pressing slope 23353 is provided on the top; the pressing spring 23352 is connected between the pressing slider 23351 and the contraction groove 2332. This setting method can avoid movement interference between the two springs of the top pressure piece 2335, and under the action of the top pressure spring 23352, the top pressure slider 23351 will provide continuous clamping force to the counter-pressure component 5, so that the counter-pressure component 5 can press down the lower pressure claw 31, so that the lower pressure claw 31 presses the end face of the ring gear 6; when the top pressure slider 23351 is pressed upward by the counter-pressure component 5, the elastic inner claw 2333 will be pushed by the extrusion ramp 23333 to further press on the outer ring of the ring gear 6 to increase the fixing effect.

[0046] As a specific embodiment of the present invention, refer to Figure 2, Figure 4 and Fig. 9 The limiting assembly 4 includes a locking screw groove 41, a locking bolt 42, a pressing screw groove 43 and a pressing bolt 44; the locking screw groove 41 is opened at the center of the lower plate 12; the locking bolt 42 is installed in the locking screw groove 41, and a through hole for the locking bolt 42 to pass through is opened in the center of the pressing slider 21; the pressing screw groove 43 is opened in a circular array on the lower plate 12, and its axis coincides with the axis of the limiting hole 331; the pressing bolt 44 is installed in the pressing screw groove 43 and the limiting hole 331, and the top diameter of the pressing bolt 44 is larger than the diameter of the limiting hole 331. The pressing slider 21 can be kept fixed by tightening the locking bolt 42, and the fixing effect can be increased due to the threaded action between the locking bolt 42 and the locking screw groove 41, so that the rotating clamping jaw 23 can maintain the clamping effect, and the connecting ring 33 can be limited by the pressing bolt 44, thereby achieving a limiting effect on the pressing jaw 31, so that the pressing jaw 31 maintains the clamping effect.

[0047] As a specific embodiment of the present invention, refer to Figure 2 , Figure 7 and Fig. 9 The back-pressure assembly 5 includes an adjusting screw groove 51 and a back-pressure bolt 52 ; the adjusting screw groove 51 is provided on the connecting ring 33 ; and the back-pressure bolt 52 is installed in the adjusting screw groove 51 . Since the counter-pressure bolt 52 and the rotating jaw 23 maintain a tightening effect, the counter-pressure bolt 52 can provide a tightening force on the rotating jaw 23, thereby ensuring the radial fixing effect of the rotating jaw 23 on the ring gear 6. When the ring gear 6 vibrates under the action of the cutting force, when the rotating jaw 23 is impacted and tends to relax, a downward pressure will be generated on the counter-pressure bolt 52, and the counter-pressure bolt 52 will drive the connecting ring 33 to press down together, so that the downward pressure claw 31 increases the clamping force on the end face of the ring gear 6, thereby preventing the ring gear 6 from sliding. Since the counter-pressure bolt 52 is a structure with adjustable height, it can meet the needs of fixing the ring gear 6 with different thicknesses and diameters, and the initial pressing pressure of the counter-pressure bolt 52 on the rotating jaw 23 can be adjusted by adjusting the height of the counter-pressure bolt 52, thereby increasing the pre-tightening force of the rotating jaw 23 and ensuring the radial clamping effect on the ring gear 6.

[0048] Working process: place the ring gear 6 on the fixed disk 1, tighten the locking bolt 42, and then rotate the clamping jaw 23 to push the ring gear 6 to the center of the fixed disk 1 and fix it, turn the telescopic bolt 314 to make the telescopic pressing claw 315 adjust the extension length according to the diameter of the ring gear 6, tighten the pressing bolt 44 to make the pressing claw 31 press the upper end surface of the ring gear 6 downward, and the negative pressure will be generated in the adsorption groove 34 during the downward sliding of the pressing claw 31, sucking the lower end surface of the ring gear 6 to complete the fixation of the ring gear 6.

[0049] Specifically, in order to align and fix the center of the gear ring 6 with the center of the fixed disk 1, the gear ring 6 is placed on the upper disk 11, and the locking bolt 42 is screwed. The locking bolt 42 generates a downward force on the downward pressing slider 21 and aligns and limits it. At this time, the connecting groove 211 on the downward pressing slider 21 will press down the connecting part 231 so that the rotating part 232 drives the clamping part 233 to rotate, and the three clamping parts 233 of the circumferential array will generate a centering driving force on the gear ring 6, so that the center of the gear ring 6 is aligned with the center of the fixed disk 1; and according to the tightening effect of the locking bolt 42, the radial clamping force on the gear ring 6 can be adjusted automatically to avoid deformation or sliding of the gear ring 6 caused by excessive or insufficient clamping force. After the outer claw 2331 is clamped with the outer ring of the gear ring 6, the elastic inner claw 2333 will provide additional radial clamping force to the gear ring 6 under the action of the radial pressure spring 2334, and absorb vibration during cutting;

[0050] In order to axially fix and press the end face of the gear ring 6, according to the diameter of the gear ring 6, the telescopic bolt 314 is turned to adjust the extension length of the telescopic pressing claw 315 to ensure that the lower pressing claw 31 and the upper end face of the gear ring 6 are in full contact; the lower pressing bolt 44 is tightened so that the lower pressing bolt 44 drives the connecting ring 33 to slide downward, and the connecting ring 33 will drive the three lower pressing claws 31 to press the upper end face of the gear ring 6, and the lower pressing claw 31 will slide in the adsorption groove 34 in a piston-like manner during the downward pressing process, so that the negative pressure generated in the adsorption groove 34 sucks the lower end face of the gear ring 6, thereby completing the axial fixing of the gear ring 6, and the friction force generated by the compression prevents the gear ring 6 from radial deviation;

[0051] In order to ensure that the gear ring 6 does not slip due to vibration and impact during the cutting process, thereby reducing the machining accuracy, when the gear ring 6 has a radial sliding tendency under the cutting force, refer to Figure 2 , Figure 8 and Fig. 9 , which will cause the rigid outer claw 2331 to rotate, causing the rotating clamping claw 23 to produce a downward pressing tendency on the back-pressure bolt 52. At this time, the back-pressure bolt 52 will increase the clamping force of the downward pressing claw 31 on the upper end surface of the ring gear 6 through the connecting ring 33, so that the ring gear 6 will not slip due to vibration and impact during the cutting process. The back-pressure bolt 52 will also generate an extrusion force on the extrusion inclined surface 23333 of the elastic inner claw 2333 through the top pressing inclined surface 23353 of the top pressing slider 23351, thereby pushing the elastic inner claw 2333 to be further pressed on the outer ring of the ring gear 6, increasing the radial fixing effect to avoid slipping of the ring gear 6, thereby improving the machining accuracy of the ring gear 6.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected, and the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A gear ring fixing device for machining the inner hole of a gear ring, comprising a fixing plate (1), characterized in that: It also comprises a radial positioning component (2), an axial positioning component (3), a limiting component (4) and a back pressure component (5); the radial positioning component (2) is connected to the fixed disk (1); the limiting component (4) is connected to the radial positioning component (2) and the axial positioning component (3); when the limiting component (4) presses down on the radial positioning component (2), the radial positioning component (2) turns over and pushes the gear ring (6) towards the center of the fixed disk (1); the back pressure component (5) is connected to the radial positioning component (2); when the gear ring (6) is impacted by the cutting force, the radial positioning component (2) generates a reverse turning trend and presses the back pressure component (5) downward; the back pressure component (5) is subjected to the downward pressure and drives the axial positioning component (3) to press the end face of the gear ring (6) downward; The fixed plate (1) comprises an upper plate (11) and a lower plate (12); the upper plate (11) is provided with three downward pressure grooves (111) in a circumferential array on the outer ring, and is connected to the lower plate (12) by bolts; the axial positioning assembly (3) comprises three downward pressure claws (31), a downward pressure spring (32), a connecting ring (33) and an adsorption groove (34); the three downward pressure claws (31) are respectively slidably installed in corresponding downward pressure grooves (111); the downward pressure spring (32) is connected between the downward pressure claws (31) and the downward pressure groove (111); the connecting ring (33) is connected between two adjacent downward pressure claws (31), and a limiting hole (331) is provided on the connecting ring (33); the adsorption groove (34) is provided on the upper plate (11), and the downward pressure claw (31) will slide in the adsorption groove (34) during the downward pressure process, so that negative pressure is generated in the adsorption groove (34) to suck the lower end surface of the gear ring (6); The back-pressure assembly (5) comprises an adjusting screw groove (51) and a back-pressure bolt (52); the adjusting screw groove (51) is formed on the connecting ring (33); and the back-pressure bolt (52) is installed in the adjusting screw groove (51).

2. A gear ring fixing device for gear ring inner hole processing according to claim 1, characterized in that: The lower pressure claw (31) comprises a lower pressure claw body (311), a telescopic groove (312), a telescopic screw groove (313), a telescopic bolt (314), a telescopic pressure claw (315) and a telescopic spring (316); the lower pressure claw body (311) is installed in the lower pressure groove (111); the telescopic groove (312) is provided at the top of the lower pressure claw body (311); the telescopic screw groove (313) is provided at the tail of the telescopic groove (312); the telescopic bolt (314) is installed in the telescopic screw groove (313); the telescopic pressure claw (315) is slidably installed in the telescopic groove (312); and the telescopic spring (316) is connected between the telescopic pressure claw (315) and the telescopic groove (312).

3. A gear ring fixing device for gear ring inner hole processing according to claim 1, characterized in that: The lower plate (12) has an adjusting slot (121) at its center; the upper plate (11) has an outer ring having a flipping slot (112); the radial positioning assembly (2) comprises a pressing slider (21), a flipping spring (22) and a rotating clamp (23); the pressing slider (21) is slidably mounted in the adjusting slot (121); the outer ring of the pressing slider (21) has a connecting slot (211); the flipping spring (22) is connected between the adjusting slot (121) and the pressing slider (21); the rotating clamp (23) comprises a connecting portion (231), a rotating portion (232) and a clamping portion (233); the connecting portion (231) is connected to the connecting slot (211); the rotating portion (232) is rotatably mounted in the flipping slot (112); and the clamping portion (233) is connected to the rotating portion (232).

4. A gear ring fixing device for gear ring inner hole processing according to claim 3, characterized in that: The clamping portion (233) comprises an outer claw (2331), a contraction groove (2332), an elastic inner claw (2333), a radial pressure spring (2334) and a pressing piece (2335); the outer claw (2331) is connected to the rotating portion (232); the contraction groove (2332) is provided in the outer claw (2331) and is a bent structure; the elastic inner claw (2333) is installed in the contraction groove (2332), and a spring hole (23331) is provided in the elastic inner claw (2333); the radial pressure spring (2334) is connected between the spring hole (23331) and the contraction groove (2332); and the pressing piece (2335) is installed in the contraction groove (2332).

5. A gear ring fixing device for gear ring inner hole processing according to claim 4, characterized in that: A sliding notch (23332) is provided at the side wall of the spring hole (23331); an extrusion inclined surface (23333) is provided at the tail of the elastic inner claw (2333); the pressing member (2335) comprises a pressing slider (23351) and a pressing spring (23352); the pressing slider (23351) is slidably mounted in the contraction groove (2332), and a pressing inclined surface (23353) is provided at the top; the pressing spring (23352) is connected between the pressing slider (23351) and the contraction groove (2332).

6. The gear ring fixing device for gear ring inner hole processing according to claim 1, characterized in that: The limiting assembly (4) comprises a locking screw groove (41), a locking bolt (42), a pressing screw groove (43) and a pressing bolt (44); the locking screw groove (41) is arranged at the center of the lower plate (12); the locking bolt (42) is installed in the locking screw groove (41); the pressing screw groove (43) is arranged in a circular array on the lower plate (12), and the axis of the pressing screw groove (43) coincides with the axis of the limiting hole (331); the pressing bolt (44) is installed in the pressing screw groove (43) and the limiting hole (331), and the top diameter of the pressing bolt (44) is larger than the diameter of the limiting hole (331).

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