Gear ring machining and shaping device and method

Abstract

A gear ring machining and shaping device comprises a sleeve and an ejector rod, and further comprises a middle ejector block, a first ejector rod, a second ejector rod, a second ejector rod, a third ejector rod, a fourth ejector rod, a fourth ejector rod and a fifth ejector rod, and the end face of one side of the second nut is fixedly connected with the side wall of the middle rod; the two movable swing pieces are arranged on the ejector rods on the two sides of the sleeve respectively and comprise sliding sleeves arranged on the ejector rods in a sliding and sleeving mode, two connecting rods are symmetrically arranged on the two sides of the side walls of the sliding sleeves, the tail ends of the connecting rods are parallel to the axes of the sliding sleeves, and the tail ends of the two connecting rods are rotationally connected with an upper rod and a lower rod which are equal to the middle rod in diameter respectively; the distance between the upper rod and the lower rod is matched with the length of the middle rod; and the third nut is in threaded connection between the sleeve and the movable swinging piece. According to the device, through the middle ejector block and the movable swing piece which are movably connected, the short shaft of the deformed part of the gear ring and the areas on the two sides of the short shaft can be integrally corrected, the correction frequency is reduced, and the area correction effect is better than that of single-point correction.

Description

Technical Field

[0001] The invention relates to the technical field of gear ring processing, and in particular to a gear ring processing shaping device and a processing method. Background Art

[0002] When processing the gear ring, it needs to be quenched first and then tempered. After hot processing, the roundness will be out of tolerance and the shape will be oval. If the post-shaping method is adopted, the gear ring needs to be manually moved to the press for shaping, which is time-consuming and labor-intensive.

[0003] Currently, there is a method of shaping during the heat treatment process, for example, the patent application number is 200910187210.5, and the name is a method for preventing large gear rings from out of roundness after heat treatment, which uses a jack for correction.

[0004] The application number is 200510046437.X, and the name is a patent for a bearing heat treatment shaping method, which uses shaping screws for correction.

[0005] However, the above methods all adopt the point correction method, that is, only correct the ovality of the minor axis line. However, in the thermal deformation of the gear ring, on the one hand, the deformation area is not a point, and only correcting the minor axis line may cause the intermediate transition area of ​​the gear ring shape to still not meet the standard. On the other hand, the teeth inside the gear ring cannot use the patented jack and shaping screws above, and are squeezed with the thinnest part of the teeth, which will cause damage or deformation of the teeth. Summary of the invention

[0006] In order to solve the technical problems existing in the above-mentioned background technology, the present invention provides a processing and shaping device and method specially used for gear rings.

[0007] The technical solution of the present invention is as follows:

[0008] A gear ring processing and shaping device comprises a sleeve and a push rod. The push rod is divided into a left rod and a right rod with opposite thread directions, which are respectively threadedly connected to the two ends of the sleeve. Rotating the sleeve can simultaneously push the push rods on both sides to move left and right.

[0009] The device also includes:

[0010] The middle top block comprises a middle rod and a second nut, wherein one end surface of the second nut is fixedly connected to the side wall of the middle rod, and the other end surface of the second nut can be movably pressed against the end of the top rod;

[0011] The movable pendulum is two pieces, which are respectively arranged on the top rods on both sides of the sleeve, including a sliding sleeve slidingly sleeved on the top rod, and two connecting rods are symmetrically arranged on both sides of the side wall of the sliding sleeve, and the ends of the connecting rods are parallel to the axis of the sliding sleeve. The ends of the two connecting rods are respectively rotated to connect the upper rod and the lower rod with the same diameter as the middle rod, and the distance between the upper rod and the lower rod is matched with the length of the middle rod;

[0012] The middle top block and the movable pendulum are designed as movable parts, not fixedly connected to the top rod, and can be replaced according to different gear rings. The middle rod, upper rod and lower rod are all cylindrical structures, which can adapt to different tooth grooves. When in use, the depth of the middle rod, upper rod and lower rod entering the tooth groove inside the gear ring is less than 1 / 2 diameter.

[0013] The third nut is threadedly connected between the sleeve and the movable pendulum and is used to limit the position of the movable pendulum.

[0014] Regarding the structure of the sleeve, the inner diameter of the sleeve is larger than the outer diameter of the push rod, and first nuts are fixed on both sides of the sleeve for connection with the push rod.

[0015] In order to reduce costs, the middle top block adopts a simple method of welding a middle rod and a second nut. The inner diameter of the second nut is smaller than the outer diameter of the top rod. The end of the top rod is designed to be a conical structure, which can be inserted into the second nut to more than half the depth, thereby tightening the middle top block in the internal tooth groove of the gear ring.

[0016] Furthermore, the diameter of the middle rod is smaller than the inner diameter of the second nut, and the size is gradually reduced through the push rod, the second nut and the middle rod, so that after the smaller middle rod is embedded in the tooth groove, the larger push rod can provide a larger thrust to be transmitted to the middle rod. The second nut is welded in the middle position of the middle rod, so that the thrust is transmitted smoothly.

[0017] A circular pressure platform is also provided on one side of the sliding sleeve close to the sleeve, and the diameter of the pressure platform is larger than the outer diameter of the third nut to increase the contact area between the two and avoid stress concentration.

[0018] The connecting rod includes an arc segment and a straight segment, the straight segment is parallel to the axis of the sliding sleeve, one end of the arc segment is perpendicular to the sliding sleeve, and the other end is tangent to the straight segment. The thrust generated by rotating the third nut is transmitted to the upper rod and the lower rod through the connecting rod.

[0019] Preferably, a steel ball is fixed in the middle of the side wall of the upper rod and the lower rod, and a corresponding groove is provided at the end of the straight section, and the steel ball is rotatably connected in the groove. On the one hand, it ensures that the force points of the upper rod and the lower rod are in the middle position and the force is balanced, and on the other hand, the upper rod and the lower rod can be freely rotated and adjusted in direction.

[0020] As a preferred embodiment, the upper rod and the lower rod have the same length, and neither is less than the length of the middle rod. When adjusting, first adjust the center position of the short axis so that the three coincide. Then, when adjusting the positions on both sides of the center of the short axis, the upper rod and the lower rod are staggered and supported in the tooth grooves on both sides of the middle rod. The longer length can provide a larger support surface, which is convenient for force transmission.

[0021] In addition, the device also includes one or two correction sleeves, which are arc-shaped long sleeves, the inner diameter of which is the same as the outer diameter of the middle rod, and the central angle of which is greater than 200 degrees and less than 270 degrees;

[0022] The two ends of the middle rod are symmetrically provided with inner bevels, which are inclined inward from the side of the middle rod away from the second nut, and the inclination angle is between 30-60 degrees. The vertical plane of the inner bevel coincides with the axis of the middle rod and the axis of the second nut. One end of the upper rod and the lower rod is provided with an outer bevel with a corresponding inclination angle;

[0023] The length of the correction sleeve is greater than the length of the inner and outer bevels, and can be placed on the junction of the middle rod and the upper and / or lower rods to make the axes of the three coincide. This is a necessary step before correcting the position of the minor axis of the ellipse. The relative positions of the upper, middle and lower rods are determined so that they have the same horizontal distance from the sleeve, so that when the sleeve is rotated, the three are evenly stressed and the minor axis of the gear ring is deformed.

[0024] The present invention also provides a gear ring processing and shaping method, which uses the gear ring processing and shaping device, and comprises the following steps:

[0025] S1. Measure the ovality of the outer ring of the gear ring after quenching, and mark the unqualified area;

[0026] S2. Select the corresponding middle top block and movable pendulum according to the pitch of the gear ring, and correct the midpoint of the unqualified area;

[0027] S21, sleeve the second nut of the middle top block onto the end of the top rod, move the sliding sleeve of the movable pendulum, and make the outer inclined surfaces of the upper rod and the lower rod pre-fit with the inner inclined surface of the middle rod;

[0028] S22, putting the correction sleeve on the joint of the middle rod and the upper rod and / or the lower rod so that the axes of the three coincide with each other;

[0029] S23, tighten the third nut onto the sliding sleeve, and then remove the correction sleeve;

[0030] S24, placing the movable pendulums fixed at both ends of the middle rod and the sleeve into the gear ring along the deformed elliptical minor axis of the gear ring, and embedding the middle rod, the upper rod and the lower rod into the tooth groove;

[0031] S25, rotating the sleeve to move the left rod and the right rod on both sides to the sides respectively until the measured radial dimension reaches a predetermined value;

[0032] S3, calibrate both sides of the midpoint of the unqualified area;

[0033] S31, loosen the third nut, slide the movable pendulum inward, and separate the upper rod and the lower rod from the middle rod;

[0034] S32, rotating the movable pendulum, and rotating the upper rod and the lower rod to face the tooth grooves on both sides of the middle rod;

[0035] S33, slide the movable pendulum outwards, so that the upper rod and the lower rod are embedded in the tooth grooves on both sides of the middle rod, and tighten the third nut until it contacts the sliding sleeve;

[0036] S34, alternately rotating the two third nuts to push the sliding sleeve to move outward until the measured radial dimension reaches a predetermined value;

[0037] S35, loosen the third nut, slide the movable pendulum inward and then rotate it in the opposite direction, so that the upper rod and the lower rod reach the tooth groove position of the lower rod and the upper rod in step S33, and repeat step S34;

[0038] In this way, the problem of dimensional deviation on both sides of the gear ring can be prevented;

[0039] If the deformation size of the short axis is large, the movable pendulum can be rotated to multiple angles and corrected multiple times from the center to both sides;

[0040] S4, keep the gear ring processing shaping device at the last calibration position, and put it and the gear ring into the tempering furnace together;

[0041] S5. After tempering, disassemble the gear ring processing and shaping device.

[0042] Through the above design, the gear ring processing and shaping device and method of the present invention can perform overall correction on the short axis and the areas on both sides of the deformed part of the gear ring through the movably connected intermediate top block and the movable pendulum. Compared with the prior art which only performs single-point correction on the linear position of the short axis, or continuously disassembles the correction device and performs multiple corrections, it has substantial improvement, which not only reduces the number of corrections, but also improves the effect of regional correction than that of single-point correction.

[0043] In addition, the movable top block and movable ornament are connected to the tooth groove through the upper rod, middle rod and lower rod of the cylindrical structure, which will not damage the teeth, and different intermediate top blocks and movable ornaments can be replaced according to different gear rings. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In the attached picture:

[0045] Figure 1 A three-dimensional diagram of a device for machining and shaping a gear ring;

[0046] Figure 2 It is a front view of the gear ring processing shaping device;

[0047] Figure 3 A top view of the gear ring machining shaping device;

[0048] Figure 4 This is a diagram showing the alignment of the movable ornament and the middle top block;

[0049] Figure 5 It is a three-dimensional picture of a movable ornament;

[0050] Figure 6 It is a cross-sectional view of the movable ornament;

[0051] Figure 7It is a top view when correcting the midpoint of the unqualified area;

[0052] Figure 8 It is a top view when correcting both sides of the midpoint of the unqualified area;

[0053] The components represented by the reference numerals in the figure are:

[0054] 1. Sleeve; 11. First nut; 2. Push rod; 3. Intermediate push block; 31. Middle rod; 311. Inner bevel; 32. Second nut; 4. Movable ornament; 41. Sliding sleeve; 42. Connecting rod; 43. Steel ball; 44. Upper rod; 441. Outer bevel; 45. Lower rod; 46. Pressure platform; 5. Third nut; 6. Correction sleeve. DETAILED DESCRIPTION

[0055] See also Figure 1-Figure 3 A gear ring processing and shaping device includes a sleeve 1 and a push rod 2. The push rod 2 is divided into a left rod and a right rod with opposite thread directions, which are respectively threadedly connected to the two ends of the sleeve 1. By rotating the sleeve 1, the push rods 2 on both sides can be pushed to move left and right at the same time. This basic part is similar to the existing shaping device.

[0056] Specifically, the inner diameter of the sleeve 1 is larger than the outer diameter of the push rod 2 , and first nuts 11 are fixed on both sides of the sleeve 1 for connection with the push rod 2 .

[0057] The invention of the present invention is that it also includes:

[0058] The middle top block 3 comprises a middle rod 31 and a second nut 32, wherein one end surface of the second nut 32 is fixedly connected to the side wall of the middle rod 31, and the other end surface of the second nut 32 can be movably pressed against the end of the top rod 2;

[0059] The movable swing member 4 is two pieces, which are respectively arranged on the top rod 2 on both sides of the sleeve 1, including a sliding sleeve 41 that is slidably sleeved on the top rod 2, and two connecting rods 42 are symmetrically arranged on both sides of the side wall of the sliding sleeve 41. The ends of the connecting rods 42 are parallel to the axis of the sliding sleeve 41. The ends of the two connecting rods 42 are respectively rotatably connected to the upper rod 44 and the lower rod 45 with the same diameter as the middle rod 31, and the distance between the upper rod 44 and the lower rod 45 matches the length of the middle rod 31;

[0060] The middle top block 3 and the movable pendulum 4 are both designed as movable parts, which are not fixedly connected to the top rod 2 and can be replaced according to different gear rings. The middle rod 31, the upper rod 44 and the lower rod 45 are all cylindrical structures, which can adapt to different tooth grooves. When in use, the depth of the middle rod 31, the upper rod 44 and the lower rod 45 entering the tooth groove inside the gear ring is less than 1 / 2 of the diameter.

[0061] The third nut 5 is threadedly connected between the sleeve 1 and the movable pendulum 4 and is used to limit the position of the movable pendulum 4.

[0062] In addition, the device also includes two correction sleeves 6, which are arc-shaped long sleeves, the inner diameter of which is the same as the outer diameter of the middle rod 31, and the central angle of which is greater than 200 degrees and less than 270 degrees;

[0063] The two ends of the middle rod 31 are symmetrically provided with inner bevels 311, which are inclined inward from the side of the middle rod 31 away from the second nut 32, and the inclination angle is between 30-60 degrees. The vertical plane of the inner bevel 311 coincides with the axis of the middle rod 31 and the axis of the second nut 32. One end of the upper rod 44 and the lower rod 45 is provided with an outer bevel 441 with a corresponding inclination angle.

[0064] The length of the correction sleeve 6 is greater than the length of the inner bevel 311 and the outer bevel 441. The two correction sleeves are respectively placed on the connection between the middle rod 31 and the upper rod 44, and the connection between the middle rod 31 and the lower rod 45, so that the axes of the three coincide. This is a necessary step before correcting the position of the elliptical minor axis of the gear ring. The relative positions of the upper rod 44, the middle rod 31 and the lower rod 45 are determined so that they have the same horizontal distance with the sleeve 1, so that when the sleeve 1 is rotated, the three are evenly stressed and the minor axis of the gear ring is pushed to deform.

[0065] Moreover, the opening directions of the inner bevel 311 and the outer bevel 441 are also very important. Through the above design, when correcting the elliptical minor axis of the gear ring, the horizontal thrust is transmitted to the upper rod 44 and the lower rod 45. As the sleeve 1 rotates, the upper rod 44 and the lower rod 45 squeeze the middle rod 31 to jointly push the gear ring without generating lateral force.

[0066] When correcting the areas on both sides of the elliptical minor axis of the gear ring, the movable pendulum 4 can be retracted inward a little and then rotated to pass over the middle rod 31 without interfering with it.

[0067] Combine the following Figure 4 The specific structure of the middle top block 3 is introduced below. To reduce the cost, the middle top block 3 adopts a simple welding method of a middle rod 31 and a second nut 32. The inner diameter of the second nut 32 is smaller than the outer diameter of the top rod 2. The end of the top rod 2 is designed to be a conical structure, which can be inserted into the second nut 32 to more than half the depth, so that the middle top block 3 is pressed tightly against the internal tooth groove of the gear ring.

[0068] Furthermore, the diameter of the middle rod 31 is smaller than the inner diameter of the second nut 32, and the gap between the middle rod 31 and the second nut 32 is filled with solder. The height of the soldering foot should not be too large to avoid interference with the correction sleeve.

[0069] Through the push rod 2, the second nut 32 to the middle rod 31, the size is reduced, so that after the smaller middle rod 31 is embedded in the tooth groove, the larger push rod 2 can provide a larger thrust to the middle rod 31. The second nut 32 is welded in the middle position of the middle rod 31, so that the thrust is transmitted smoothly.

[0070] Combine the following Figure 5 and Figure 6Let's look at the specific structure of the movable ornament 4.

[0071] The inner diameter of the sliding sleeve 41 and the outer diameter of the push rod 2 are matched to just allow relative sliding, and should not be too large to avoid deflection when the sliding sleeve 41 is pushed to move.

[0072] A circular pressure platform 46 is also provided on one side of the sliding sleeve 41 close to the sleeve 1 . The diameter of the pressure platform 46 is larger than the outer diameter of the third nut 5 so as to increase the contact area between the two and avoid stress concentration.

[0073] The connecting rod 42 includes an arc segment and a straight segment, the straight segment is parallel to the axis of the sliding sleeve 41, one end of the arc segment is perpendicular to the sliding sleeve 41, and the other end is tangent to the straight segment. The thrust generated by rotating the third nut 5 is transmitted to the upper rod 44 and the lower rod 45 through the connecting rod 42. The symmetrically arranged upper rod 44 and lower rod 45 generate equal thrust on the gear ring.

[0074] Preferably, a steel ball 43 is fixed in the middle of the side wall of the upper rod 44 and the lower rod 45, and a corresponding groove is provided at the end of the straight section, and the steel ball 43 is rotatably connected in the groove. On the one hand, it ensures that the force points of the upper rod 44 and the lower rod 45 are in the middle position, the force is balanced, and there is no edge warping. On the other hand, the upper rod 44 and the lower rod 45 can be freely rotated and adjusted in direction.

[0075] As a preferred embodiment, the upper rod 44 and the lower rod 45 have the same length, and are not less than the length of the middle rod 31. When adjusting, first adjust the center position of the short axis so that the three coincide. Then, when adjusting the positions on both sides of the center of the short axis, the upper rod 44 and the lower rod 45 are staggered and supported in the tooth grooves on both sides of the middle rod 31. The longer length can provide a larger support surface to facilitate the transmission of force.

[0076] The present invention also provides a gear ring processing and shaping method, which uses the gear ring processing and shaping device, and comprises the following steps:

[0077] S1. Measure the ovality of the outer ring of the gear ring after quenching, and mark the unqualified area;

[0078] S2. Select the corresponding middle top block 3 and movable pendulum 4 according to the pitch of the gear ring, and correct the midpoint of the unqualified area. Figure 7 ;

[0079] S21, sleeve the second nut 32 of the middle top block 3 on the end of the top rod 2, move the sliding sleeve 41 of the movable swing member 4, and make the outer inclined surfaces 441 of the upper rod 44 and the lower rod 45 pre-fit with the inner inclined surface 311 of the middle rod 31;

[0080] S22, respectively put the two correction sleeves 6 on the middle rod 31 and the upper rod 44, and the middle rod 31 and the lower rod 45, so that the axes of the three coincide;

[0081] S23, tighten the third nut 5 onto the pressure platform 46 inside the sliding sleeve 41, so that the upper rod 44, the middle rod 31 and the lower rod 45 are at the same horizontal distance from the sleeve 1, and then remove the correction sleeve 6;

[0082] S24, the middle rod 31 and the movable swing member 4 fixed at both ends of the sleeve 1 are placed inside the gear ring along the elliptical minor axis after the gear ring is deformed, and the middle rod 31, the upper rod 44 and the lower rod 45 are embedded in the tooth groove. At this time, the upper rod 44 and the lower rod 45 are only in pre-contact with the middle rod 31;

[0083] S25, rotating the sleeve 1, so that the left rod and the right rod on both sides move to both sides respectively, so that the upper rod 44 and the lower rod 45 are in close contact with the middle rod 31, the axes coincide, and the gear ring is squeezed together until the measured outer radial dimension of the gear ring reaches a predetermined value;

[0084] S3, correct the two sides of the midpoint of the unqualified area, see Figure 8 ;

[0085] S31, loosen the third nut 5, slide the movable swing member 4 inward, and separate the upper rod 44 and the lower rod 45 from the middle rod 31;

[0086] S32, rotating the movable pendulum 4, and rotating the upper rod 44 and the lower rod 45, so that they face the tooth grooves on both sides of the middle rod 31;

[0087] S33, slide the movable swing member 4 outward, so that the upper rod 44 and the lower rod 45 are embedded in the tooth grooves on both sides of the middle rod 31, and tighten the third nut 5 until it contacts the pressure platform 46 on the inner side of the sliding sleeve 41;

[0088] S34, alternately rotating the two third nuts 5 to push the sliding sleeve 41 to move outward until the measured radial dimension reaches a predetermined value;

[0089] S35, loosen the third nut 5, slide the movable pendulum 4 inward and then rotate it in the opposite direction, so that the upper rod 44 and the lower rod 45 reach the tooth groove position of the lower rod 45 and the upper rod 44 in step S33, and repeat step S34;

[0090] In this way, the problem of dimensional deviation on both sides of the gear ring can be prevented;

[0091] If the deformation size of the short axis position is large, the movable pendulum 4 can be rotated to multiple angles and corrected multiple times from the center to both sides;

[0092] S4, keep the gear ring processing shaping device at the last calibration position, and put it and the gear ring into the tempering furnace together;

[0093] S5. After tempering, disassemble the gear ring processing and shaping device.

[0094] Through the above design, the gear ring processing and shaping device and method of the present invention can perform overall correction on the short axis and the areas on both sides of the deformed part of the gear ring through the movably connected intermediate top block 3 and the movable pendulum 4. Compared with the prior art which only performs single-point correction on the linear position of the short axis, or continuously disassembles the correction device and performs multiple corrections, it has substantial progress, which not only reduces the number of corrections, but also improves the effect of regional correction than that of single-point correction.

[0095] In addition, the movable top block 3 and movable pendulum 4 are connected to the tooth grooves through the upper rod 44, the middle rod 31 and the lower rod 45 of the cylindrical structure, which will not damage the teeth, and different intermediate top blocks 3 and movable pendulums 4 can be replaced according to different gear rings.

Claims

1. A gear ring processing and shaping device, comprising a sleeve (1) and a push rod (2), wherein the push rod (2) is divided into a left rod and a right rod with opposite thread directions, which are respectively threadedly connected to the two ends of the sleeve (1), characterized in that: Also includes: The middle top block (3) comprises a middle rod (31) and a second nut (32), wherein one end surface of the second nut (32) is fixedly connected to the side wall of the middle rod (31), and the other end surface of the second nut (32) can be movably pressed against the end of the top rod (2); The movable swing member (4) is composed of two pieces, which are respectively arranged on the top rod (2) on both sides of the sleeve (1), and include a sliding sleeve (41) which is slidably sleeved on the top rod (2). Two connecting rods (42) are symmetrically arranged on both sides of the side wall of the sliding sleeve (41). The ends of the connecting rods (42) are parallel to the axis of the sliding sleeve (41). The ends of the two connecting rods (42) are respectively rotatably connected to an upper rod (44) and a lower rod (45) having a diameter equal to that of the middle rod (31). The distance between the upper rod (44) and the lower rod (45) matches the length of the middle rod (31). The third nut (5) is threadedly connected between the sleeve (1) and the movable pendulum (4).

2. A gear ring processing and shaping device according to claim 1, characterized in that: First nuts (11) are respectively fixed on both sides of the sleeve (1) for connection with the push rod (2).

3. A gear ring processing and shaping device according to claim 1, characterized in that: The diameter of the middle rod (31) is smaller than the inner diameter of the second nut (32), and the second nut (32) is welded to the middle position of the middle rod (31).

4. A gear ring processing and shaping device according to claim 3, characterized in that: The end of the push rod (2) is a conical structure and can be inserted into the interior of the second nut (32) to a depth of more than half.

5. The gear ring processing and shaping device according to claim 1, characterized in that: A circular pressure platform (46) is also provided on the side of the sliding sleeve (41) close to the sleeve (1), and the diameter of the pressure platform (46) is larger than the outer diameter of the third nut (5).

6. A gear ring processing and shaping device according to claim 1, characterized in that: The connecting rod (42) comprises an arc segment and a straight segment, the straight segment is parallel to the axis of the sliding sleeve (41), one end of the arc segment is perpendicular to the sliding sleeve (41), and the other end is tangent to the straight segment.

7. A gear ring processing and shaping device according to claim 6, characterized in that: A steel ball (43) is fixed at the middle position of the side walls of the upper rod (44) and the lower rod (45), and a corresponding groove is arranged at the end of the straight section, and the steel ball (43) is rotatably connected in the groove.

8. The gear ring processing and shaping device according to claim 1, characterized in that: The upper rod (44) and the lower rod (45) have the same length, and are not less than the length of the middle rod (31).

9. A gear ring processing and shaping device according to any one of claims 1 to 8, characterized in that: It also includes one or two correction sleeves (6), which are arc-shaped long sleeves, with an inner diameter the same as the outer diameter of the middle rod (31), and a central angle greater than 200 degrees and less than 270 degrees; The two ends of the middle rod (31) are symmetrically provided with inner bevels (311), which are inclined inward from the side of the middle rod (31) away from the second nut (32), and the inclination angle is between 30-60 degrees. The vertical plane of the inner bevel (311) coincides with the axis of the middle rod (31) and the axis of the second nut (32). One end of the upper rod (44) and the lower rod (45) is provided with an outer bevel (441) with a corresponding inclination angle; The correction sleeve (6) is longer than the inner bevel (311) and the outer bevel (441), and can be sleeved at the joint between the middle rod (31) and the upper rod (44) and / or the lower rod (45), so that the axes of the three coincide.

10. A method for machining and shaping a gear ring, characterized in that: The gear ring processing and shaping device according to claim 9 comprises the following steps: S1. Measure the ovality of the outer ring of the gear ring after quenching, and mark the unqualified area; S2, selecting the corresponding middle top block (3) and the movable pendulum (4) according to the pitch of the gear ring, and correcting the midpoint of the unqualified area; S21, sleeve the second nut (32) of the middle top block (3) onto the end of the top rod (2), move the sliding sleeve (41) of the movable swing member (4), and make the outer inclined surfaces (441) of the upper rod (44) and the lower rod (45) pre-fit with the inner inclined surface (311) of the middle rod (31); S22, putting the correction sleeve (6) on the joint of the middle rod (31) and the upper rod (44) and / or the lower rod (45) so that the axes of the three coincide with each other; S23, tighten the third nut (5) onto the sliding sleeve (41), and then remove the correction sleeve (6); S24, placing the movable pendulum (4) fixed at both ends of the middle rod (31) and the sleeve (1) into the gear ring along the elliptical minor axis after the gear ring is deformed, and the middle rod (31), the upper rod (44) and the lower rod (45) are embedded in the tooth groove; S25, rotating the sleeve (1) to move the left rod and the right rod on both sides to the sides respectively until the measured radial dimension reaches a predetermined value; S3, calibrate both sides of the midpoint of the unqualified area; S31, loosen the third nut (5), slide the movable swing member (4) inward, and separate the upper rod (44) and the lower rod (45) from the middle rod (31); S32, rotating the movable swing member (4), and rotating the upper rod (44) and the lower rod (45) so that they face the tooth grooves on both sides of the middle rod (31); S33, slide the movable swing member (4) outwards, so that the upper rod (44) and the lower rod (45) are embedded in the tooth grooves on both sides of the middle rod (31), and tighten the third nut (5) until it contacts the sliding sleeve (41); S34, alternately rotating the two third nuts (5) to push the sliding sleeve (41) to move outward until the measured radial dimension reaches a predetermined value; S35, loosen the third nut (5), slide the movable swing member (4) inward and then rotate it in the opposite direction, so that the upper rod (44) and the lower rod (45) reach the tooth groove position where the lower rod (45) and the upper rod (44) are located in step S33, and repeat step S34; S4, keep the gear ring processing shaping device at the last calibration position, and put it and the gear ring into the tempering furnace; S5. After tempering, disassemble the gear ring processing and shaping device.

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