High-precision inertia ring and circumferential quality compensation forming process thereof

Abstract

The invention relates to the technical field of inertia rings, and discloses a high-precision inertia ring and a circumferential mass compensation forming process thereof.The high-precision inertia ring comprises a plurality of arc-shaped cylinders, the multiple arc-shaped cylinders are sequentially connected end to end to form the inertia ring of a closed annular structure, every two adjacent arc-shaped cylinders are fixedly connected through a welding seam at the splicing position, and a containing groove is formed in the splicing position; the containing groove is filled with a balance weight piece, and the balance weight piece is used for correcting the uniformity of mass distribution in the circumferential direction of the inertia ring. According to the high-precision inertia ring and the circumferential mass compensation forming process thereof, the accommodating groove at the splicing part is filled with the counterweight piece capable of compensating the mass deviation, so that the circumferential mass of the inertia ring is accurately adjusted; the technical problem of uneven circumferential mass distribution caused by factors such as welding process fluctuation, uneven solder filling and operation difference of an existing inertia ring formed through stamping and welding is solved from the structural level, and the dynamic balance precision and the operation stability of the inertia ring during high-speed rotation are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of inertia ring technology, and more specifically, to a high-precision inertia ring and its circumferential mass compensation forming process. Background Technology

[0002] As an important inertial element, the inertial loop is widely used in inertial navigation, precision instruments, high-speed rotating machinery and other fields. Its core function is to provide stable inertial constraints through its own rotational inertia, so as to ensure the dynamic stability and control accuracy of related equipment during operation. Especially in high-precision equipment such as MEMS ring gyroscopes and small inertia infrared stabilization platforms, the performance of the inertial loop directly determines the performance of the core technical indicators of the equipment.

[0003] Chinese invention patent CN120244487B discloses an inertia ring and its die stamping and welding forming process, including: multiple arc-shaped cylinders, which are connected end to end to form a closed ring structure of the inertia ring. The outer and inner side walls of the arc-shaped cylinders are provided with at least two connecting parts. The arc-shaped cylinders include multiple sheets stacked along the axial direction of the inertia ring. Multiple sheets of the same arc-shaped cylinder are connected by connecting parts. In this invention, adjacent arc-shaped cylinders are connected by welding to form a weld. However, due to factors such as fluctuations in welding process parameters, insufficient control precision of solder filling amount, and differences in operation by welding operators, the solder filling weight at the splicing point of adjacent arc-shaped cylinders will inevitably differ, resulting in the inertia ring's mass distribution in the circumferential direction not meeting the requirements. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects in the prior art and provide a high-precision inertia ring and its circumferential mass compensation molding process by forming a receiving hole between adjacent arc-shaped columns and fixing and filling the receiving hole with an adjusting column of configured weight, thereby making the mass distribution of the inertia ring uniform in the circumferential direction.

[0005] To achieve the above objectives, the technical solution of the present invention is to provide a high-precision inertia ring, comprising multiple arc-shaped cylinders, the multiple arc-shaped cylinders being connected end to end in sequence to form a closed loop structure inertia ring, adjacent two arc-shaped cylinders being fixedly connected by a weld at the splice, the splice being provided with a receiving groove, the receiving groove being filled with a counterweight, the counterweight being used to correct the uniformity of the circumferential mass distribution of the inertia ring.

[0006] Preferably, the weld includes an inner weld and an outer weld, with the inner weld located on the inner ring of the inertia ring and the outer weld located on the outer ring of the inertia ring, and the receiving groove located between the inner weld and the outer weld. This design ensures that the heat-affected zone of the weld does not affect the shape and size of the receiving groove, thus guaranteeing that the counterweight can be properly installed into the receiving groove.

[0007] Preferably, the counterweight is fixedly connected to the inertia ring by hot pressing. This design helps to improve the stability and firmness of the connection between the counterweight and the inertia ring.

[0008] Preferably, a filling gap is provided between the receiving groove and the counterweight. This design allows the filling gap to provide accommodating space for the end of the counterweight to flow during hot pressing.

[0009] Preferably, the arc-shaped column comprises multiple sheets stacked along the axial direction of the inertia ring. Adjacent sheets of the same arc-shaped column are fixed together by vertical laser welding, and the vertical laser welding forms vertical weld beads on the inner ring sidewalls, outer ring sidewalls, and both ends of the arc-shaped column. This design helps to improve the connection strength and compactness between the sheets.

[0010] A high-precision inertia ring circumferential mass compensation forming process includes the following steps: S1. Construct the arc-shaped cylinder; S2. Weld the arc-shaped cylinder to form the inertia ring; S3. The uniformity adjustment of the circumferential mass of the inertia ring.

[0011] Preferably, S3 includes the following steps: S31. Place the welded inertia ring onto the weighing assembly, which has a plurality of weighing sensors that correspond one-to-one with the receiving slots of the inertia ring. S32. Obtain the weight detection value at the corresponding position through each of the weighing sensors, and configure the corresponding counterweight to compensate for the weight based on the weight detection value; S33. The counterweights configured in S32 are installed one by one into the corresponding receiving slots, and the counterweights are fixed in the receiving slots by hot pressing. This design can realize the correction of the circumferential mass of the inertia ring, thereby improving the uniformity of the circumferential mass distribution of the inertia ring.

[0012] Preferably, in step S31, the weighing assembly is first leveled, and then the inertia ring is placed on the weighing assembly. This design helps to improve the reliability and accuracy of the weight detection values ​​measured by each weighing sensor.

[0013] Preferably, in S32, the weight M of the counterweight is M = M设 -M 测 , of which M 设 M is the preset value for the quality standard. 测 This refers to the weight detection value obtained in S32. This design allows for the rapid calculation of the weight of the counterweight required to be placed in the corresponding receiving tank, based on the weight detection values ​​measured by each load cell in S32.

[0014] Preferably, after step S33 is completed, the inertia ring is subjected to stress-relief annealing. This design can eliminate residual stress generated during welding and hot pressing.

[0015] The beneficial effects of this invention are as follows: By using the high-precision inertia ring and its circumferential mass compensation forming process described in this invention, and by filling the receiving groove at the splice with counterweights that can compensate for mass deviations, the precise adjustment of the circumferential mass of the inertia ring is achieved. This solves the technical problem of uneven circumferential mass distribution caused by factors such as welding process fluctuations, uneven solder filling, and operational differences in existing stamped and welded inertia rings from a structural perspective, and significantly improves the dynamic balance accuracy and operational stability of the inertia ring during high-speed rotation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a high-precision inertia ring; Figure 2 This is a top view of a high-precision inertia loop; Figure 3 yes Figure 1 Enlarged view of the structure at point A in the middle; Figure 4 This is a three-dimensional structural diagram of the counterweight (after hot pressing). Figure 5 This is a schematic diagram of the first three-dimensional structure of an arc-shaped cylinder (the arc-shaped cylinder has not been laser-welded to form weld beads); Figure 6 This is the first top view of the curved cylinder (the curved cylinder has not been laser-welded to form weld beads); Figure 7 yes Figure 6 Enlarged view of the structure at point B; Figure 8 This is a schematic diagram of the second three-dimensional structure of the arc-shaped cylinder (the arc-shaped cylinder forms a weld bead through laser welding); Figure 9 yes Figure 8 Enlarged view of the structure at point C; Figure 10 This is a second top view of the curved cylinder (the curved cylinder is welded by laser welding to form weld beads); Figure 11 yes Figure 10Enlarged view of the structure at point D; Figure 12 yes Figure 10 Enlarged view of the structure at point E in the middle; Figure 13 This is a schematic diagram of the first three-dimensional structure of the inertia ring (forming an inner weld and an outer weld, but no counterweight is inserted into the receiving groove). Figure 14 yes Figure 13 Enlarged view of the structure at point F; Figure 15 This is a schematic diagram of the second three-dimensional structure of the inertia ring (a counterweight is inserted into the receiving groove, and the counterweight is not hot-pressed). Figure 16 yes Figure 15 Enlarged view of the structure at point G; Figure 17 yes Figure 15 A top-down view; Figure 18 yes Figure 17 Enlarged view of the structure at point H; Figure 19 yes Figure 15 Front view diagram; Figure 20 This is a schematic diagram of the first three-dimensional structure of the weighing component; Figure 21 This is a schematic diagram of the second three-dimensional structure of the weighing component; Figure 22 This is a three-dimensional structural diagram of an inertia ring placed on a weighing assembly (no counterweight is inserted into the receiving groove of the inertia ring). Figure 23 yes Figure 22 Front view sectional diagram.

[0017] In the diagram: 11. Curved cylinder; 111. Sheet metal; 12. Counterweight; 13. Inner weld; 14. Outer weld; 21. Receiving groove; 211. Through groove; 22. Welding groove; 221. Chamfer; 23. Filler gap; 231. Rounded corner; 24. Weld bead; 3. Weighing components; 31. Base; 32. Weighing sensor; 321. Positioning column; 33. Bubble level; 34. Support column; 35. Foot. Detailed Implementation

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed to enable those skilled in the art to better understand and implement the subject matter described herein. Changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] To better understand this invention, the following is combined with... Figures 1-23 A high-precision inertia ring and its circumferential mass compensation forming process according to the present invention are described in detail.

[0020] Example 1: like Figures 1-14 As shown, a high-precision inertia ring includes multiple arc-shaped cylinders 11, which are connected end to end to form a closed loop structure. Adjacent arc-shaped cylinders 11 are fixedly connected by a weld at the splice. The splice is provided with a receiving groove 21, which is filled with a counterweight 12. The counterweight 12 is used to correct the uniformity of the circumferential mass distribution of the inertia ring.

[0021] It should be noted that the high-precision inertia ring of the present invention achieves precise adjustment of the circumferential mass of the inertia ring by filling the receiving groove 21 at the splice with a counterweight 12 that can compensate for mass deviation. This solves the technical problem of uneven circumferential mass distribution caused by factors such as welding process fluctuations, uneven solder filling, and operational differences in existing stamped and welded inertia rings from a structural perspective, and significantly improves the dynamic balance accuracy and operational stability of the inertia ring when rotating at high speed. Furthermore, since the mass deviation can be compensated by the counterweight 12, this application reduces the excessive reliance on welding process precision, which is conducive to improving the yield and reducing production costs. The high-precision inertia ring of this application can meet the stringent requirements of high precision, high reliability and long life of rotating parts for high-end equipment such as new energy vehicles, aerospace, high-precision servo systems and high-speed rotating machinery, and has important engineering application value.

[0022] It should be emphasized that, in this application, the uniformity of the circumferential mass distribution of the inertia ring refers to the uniformity of the mass distribution along the circumferential direction of the inertia ring. That is, the difference in weight between two symmetrically distributed segments of the inertia ring about its own axis (if the segment includes a joint, then the segment must include the complete area of ​​the joint, i.e., include the complete weld of the corresponding joint, and not just a partial weld of the joint) is within the allowable error range, rather than a comparison of the weight of any two segments of the inertia ring.

[0023] In this embodiment, four arc-shaped cylinders 11 are provided, and four corresponding receiving slots 21 are also provided.

[0024] Example 2: As an optimization of Example 1, such as Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 10 and Figure 11 As shown, the weld includes an inner weld 13 and an outer weld 14. The inner weld 13 is located in the inner ring of the inertia ring, and the outer weld 14 is located in the outer ring of the inertia ring. The receiving groove 21 is located between the inner weld 13 and the outer weld 14.

[0025] It should be noted that both the inner and outer rings at both ends of the arc-shaped column 11 are provided with chamfers 221, so that after the arc-shaped column 11 is spliced ​​to form an inertia ring, a V-shaped welding groove 22 is formed at the chamfer 221 position. Welds are formed in the welding groove 22 by MIG welding. The one located in the inner ring of the inertia ring is called the inner weld 13, and the one located in the outer ring of the inertia ring is called the outer weld 14. The inner weld 13 and the outer weld 14 can firmly connect adjacent arc-shaped columns 11 together, improving the overall integrity of the inertia ring. A through groove 211 is provided between the two chamfers 221 (the chamfer 221 of the inner ring and the chamfer 221 of the outer ring) at the same end of the arc-shaped column 11. After the arc-shaped columns 11 are spliced ​​to form an inertia ring, a corresponding receiving groove 21 is formed at the position of the through groove 211. Specifically, the through grooves 211 at the close ends of two adjacent arc-shaped columns 11 are combined to form the receiving groove 21. By designing the receiving groove 21 to be located between the inner weld 13 and the outer weld 14, the heat-affected zone will not spread to the inner wall of the receiving groove 21 during the welding process. That is, the heat-affected zone will not affect the shape and size of the receiving groove 21, so as to ensure that the counterweight 12 can be properly installed into the receiving groove 21.

[0026] In this embodiment, there are four inner welds 13 and four outer welds 14. The cross-section of the through groove 211 is semi-circular, the cross-section of the receiving groove 21 is circular, and the counterweight 12 is a round rod with an outer diameter slightly smaller than the inner diameter of the receiving groove 21 to ensure that the round rod can be smoothly inserted into the receiving groove 21 and will not easily fall out when there is no external force.

[0027] Example 3: As an optimization of Example 2, such as Figure 15 , Figure 16 and Figure 19 As shown, the counterweight 12 is fixedly connected to the inertia ring by hot pressing.

[0028] It should be noted that the counterweight 12 is a cylindrical structure, and the initial axial length of the counterweight 12 is greater than the thickness of the inertia ring. After the counterweight 12 is inserted into the receiving groove 21, both ends of the counterweight 12 protrude from the top and bottom surfaces of the inertia ring, respectively. The protruding ends of the counterweight 12 are plastically deformed or melt-filled by hot pressing to form a stable and firm connection between the counterweight 12 and the inertia ring, preventing the counterweight 12 from shifting or falling off during the operation of the inertia ring. After hot pressing, the two end faces of the counterweight 12 are flush with the top and bottom surfaces of the inertia ring, respectively, thereby ensuring the assembly compatibility of the inertia ring and preventing the counterweight 12 from affecting the assembly of the inertia ring. Preferably, the material of the counterweight 12 is the same as that of the inertia ring to ensure that the counterweight 12 can form a good bond with the inertia ring.

[0029] Example 4: As an optimization of Example 3, such as Figure 5 , Figure 6 , Figure 7 , Figure 10 , Figure 11 , Figure 16 , Figure 17 and Figure 18 As shown, a filling gap 23 is provided between the receiving groove 21 and the counterweight 12.

[0030] It should be noted that the filling gap 23 can provide a space for the flow of the counterweight 12 during hot pressing. During the hot pressing process, after the two end areas of the counterweight 12 are plastically deformed or melt-filled by hot pressing, the material at the end of the counterweight 12 can flow into the filling gap 23, thereby ensuring that the two end faces of the counterweight 12 are flush with the top and bottom surfaces of the inertia ring after hot pressing.

[0031] In this embodiment, rounded corners 231 are provided at both ends of the semi-circular through groove 211. After the arc-shaped column 11 is spliced ​​to form an inertia ring, the two corresponding through grooves 211 form a receiving groove 21. At the same time, a filling gap 23 communicating with the receiving groove 21 is formed at the position of the rounded corner 231.

[0032] Example 5: As an optimization of Example 4, such as Figure 8 , Figure 9 , Figure 10 and Figure 12 As shown, the arc-shaped column 11 includes multiple sheets 111 stacked along the inertia ring axis. Adjacent sheets 111 of the same arc-shaped column 11 are fixed by vertical laser welding. Vertical laser welding forms vertical weld beads 24 on the inner ring sidewall, outer ring sidewall and both ends of the arc-shaped column 11.

[0033] It should be noted that laser welding partially melts each sheet 111, and the melted parts combine with each other after cooling, thereby achieving a stable connection of multiple sheets 111 to form an arc-shaped column 11. The weld bead 24 formed by laser welding is a recessed strip groove, which will not affect the assembly of the inertia ring. By forming vertical weld beads 24 on the inner ring sidewall, outer ring sidewall, and both ends of the arc-shaped column 11, the strength and stability of the connection between the sheets 111 of the same arc-shaped column 11 can be improved, and the compactness between the sheets 111 can be improved, which is beneficial to improving the overall performance and aesthetics of the arc-shaped column 11. The stacking method of the sheet material 111 of the arc-shaped column 11 in this application is the same as the stacking method of the arc-shaped column 11 disclosed in Chinese Patent No. CN120244487B. The sheet material 111 also includes a first sheet material 111 and a second sheet material 111. The through groove 211 of the first sheet material 111 is engaged with the protrusion of the second sheet material 111. The blind groove of the adjacent second sheet material 111 is engaged with the protrusion, thereby improving the stability of the connection between the adjacent sheet materials 111 and improving the overall integrity of the arc-shaped column 11. The sheet material 111 is also formed by continuous stamping of the strip.

[0034] In this embodiment, the welds 24 at both ends of the arc-shaped column 11 are located on the inner wall of the through groove 211, that is, the welds 24 at the splice of the inertia ring are located on the inner wall of the receiving groove 21. Therefore, the flowing end of the counterweight 12 during hot pressing can also flow into the welds 24 at both ends of the arc-shaped column 11. On the one hand, with the volume of the filling gap 23 remaining unchanged, the welds 24 at both ends of the arc-shaped column 11 can provide additional space allowance, ensuring that the material of the protruding end of the counterweight 12 after hot pressing can flow into the filling gap 23 or the welds 24 at both ends of the arc-shaped column 11, ensuring that the two end faces of the counterweight 12 after hot pressing can be flush with the top and bottom surfaces of the inertia ring, respectively. On the other hand, the contact area between the counterweight 12 and the inertia ring after hot pressing is further increased, and the connection strength between the counterweight 12 and the inertia ring is further improved.

[0035] Example 6: A high-precision inertia ring circumferential mass compensation forming process includes the following steps: S1. Create the curved cylinder 11; S2, Welding arc-shaped cylinder 11 to form an inertia ring; S3. Uniform adjustment of the circumferential mass of the inertia ring.

[0036] It should be noted that, as Figure 5 and Figure 8As shown, in S1, sheet material 111 is first formed by continuous stamping on the strip. Then, the sheet material 111 is stacked according to the design. Subsequently, the arc-shaped column 11 formed by stacking is pressed, and vertical weld beads 24 are formed on the inner ring sidewall, outer ring sidewall and both ends of the arc-shaped column 11 by laser welding. The process of S1 can refer to S1-S3 of the mold stamping and welding forming process of the inertia ring in Chinese Patent No. CN120244487B. Unlike that application, in the process of making the arc-shaped column 11 in this application, there is no need to apply hot melt adhesive, which reduces the manufacturing process of the arc-shaped column 11 and improves the production efficiency of the arc-shaped column 11.

[0037] In this embodiment, as Figure 8 , Figure 9 , Figure 11 , Figure 12 and Figure 19 As shown, two vertical weld beads 24 are welded to both the inner and outer ring sidewalls, and a vertical weld bead 24 is welded to the middle of the inner wall of the through groove 211 at both ends of the arc-shaped column 11; as shown Figure 13 As shown in Figure S2, four arc-shaped cylinders 11 are welded end to end to form an inertia ring.

[0038] Example 7: As an optimization of Example 6, such as Figure 1 , Figure 15 , Figure 20 , Figure 21 , Figure 22 and Figure 23 As shown, S3 includes the following steps: S31. Place the welded inertia ring onto the weighing assembly 3. The weighing assembly 3 has multiple weighing sensors 32 that correspond one-to-one with the receiving slots 21 of the inertia ring. S32. Obtain the weight detection value at the corresponding position through each weighing sensor 32, and configure the corresponding counterweight 12 to compensate for the weight according to the weight detection value; S33. The counterweights 12 configured in S32 are installed one by one into the corresponding receiving grooves 21, and the counterweights 12 are fixed in the receiving grooves 21 by hot pressing.

[0039] It should be noted that the weighing assembly 3 includes a base 31, on which multiple weighing sensors 32 arranged in a circular array are fixedly installed. The top center of each weighing sensor 32 is fixedly connected to a positioning post 321 that is inserted into a receiving groove 21. The number of weighing sensors 32 is the same as the number of receiving grooves 21. In S31, when the inertia ring is placed on the weighing assembly 3, the weighing sensors 32 provide support for the inertia ring, and the positioning posts 321 of the multiple weighing sensors 32 are inserted one-to-one into the multiple receiving grooves 21 of the inertia ring, thereby fixing the position of the inertia ring and ensuring the reliability of the weight detection values ​​measured by each weighing sensor 32. This ensures the accuracy of the weight of the counterweights 12 configured at each splicing point and improves the precision of the uniform adjustment of the circumferential mass of the inertia ring.

[0040] In this embodiment, four weighing sensors 32 are provided, and all four weighing sensors 32 are snapped and fixed to the top of the base 31. Specifically, the top of the base 31 is provided with a slot for snapping with the weighing sensors 32.

[0041] The load cell 32 can be the FAW-2kg model, which can be purchased from the Hankai official store on the Instrument and Meter Trading Network.

[0042] Example 8: As an optimization of Example 7, such as Figures 20-23 As shown in step S31, the weighing component 3 is first leveled, and then the inertia ring is placed on the weighing component 3.

[0043] It should be noted that the weighing assembly 3 also includes a bubble level 33 fixedly installed on the base 31. The base 31 is provided with multiple supports 34 and corresponding feet 35. The supports 34 and feet 35 are threadedly connected. Specifically, the supports 34 are provided with threaded grooves, and the feet 35 are provided with threaded posts that are threaded to the threaded grooves. By adjusting the depth of the threaded posts of the feet 35 into the threaded grooves of the supports 34 through the threaded engagement of the threaded posts and the threaded grooves, the distance between the feet 35 and the supports 34 can be adjusted. In S31, the distance between the feet 35 and the supports 34 is adjusted according to the position of the bubble in the bubble level 33 to make the weighing assembly 3 horizontal, thereby further improving the reliability and accuracy of the weight detection values ​​measured by each weighing sensor 32, ensuring that the counterweight 12 configured according to the measured weight detection value is inserted into the corresponding receiving groove 21 and after hot pressing, the circumferential mass distribution of the inertia ring is uniform.

[0044] In this embodiment, four pillars 34 and four feet 35 are provided. The four pillars 34 are fixedly connected to the bottom of the base 31. The four pillars 34 correspond to the positions of the four weighing sensors 32 respectively. The bottom of the foot 35 away from the threaded column is set as a hemispherical structure.

[0045] The level instrument you can choose is the Wanxiang Bubble Level 33, model BF-6010, which can be purchased from the Beifang Hengda Level Instrument Enterprise Store on Taobao.

[0046] Example 9: As an optimization of Example 8, in S32, the weight M of the counterweight 12 is M = M 设 -M 测 , of which M 设 M is the preset value for the quality standard. 测 This is the weight detection value obtained in S32.

[0047] It should be noted that M 设 = M 标 / n, where M 标 The standard weight of the inertia ring, including the weight of all the arcuate cylinders 11, welds, and counterweights 12, is M. 标 It can be customized according to customer needs or actual working conditions. n represents the number of arc-shaped cylinders 11 in the inertia loop. It is important to emphasize that M... 标 The configuration must ensure that after the inner weld 13 and outer weld 14 are formed by normal welding, the length of each counterweight 12 configured in S32 is greater than the thickness of the inertia ring. This is to ensure that after the counterweight 12 is inserted into the inertia ring, both ends of the counterweight 12 can protrude from the bottom and top surfaces of the inertia ring. Preferably, the total protrusion length of the two ends of the counterweight 12 protruding from the bottom and top surfaces of the inertia ring is 3mm-6mm, that is, the end of the counterweight 12 protrudes from the bottom or top surface of the inertia ring by 1.5mm-3mm. This ensures that after hot pressing, the counterweight 12 can form a firm connection with the inertia ring, and the material protruding from the bottom and top surfaces of the counterweight 12 can flow into the filling gap 23 or the weld 24 at the splice of the inertia ring through hot pressing, so that the two end faces of the counterweight 12 are flush with the top and bottom surfaces of the inertia ring.

[0048] In this embodiment, four arc-shaped cylinders 11 are provided, namely M 设 = M 标 / 4. The round rod is made by cutting a section from a long strip of round steel wire. Based on the diameter d of the round steel wire, the density ρ of the round steel wire, and the weight M of the counterweight 12 calculated in S32, the length of the round rod to be cut from the round steel wire can be obtained as l = 4M / ρπd. 2 .

[0049] Example 10: As an optimization of Example 9, after S33 is completed, the inertia ring is subjected to stress-relief annealing.

[0050] It should be noted that in S33, hot pressing heats the two end regions of the counterweight 12 to a high-temperature plastic state (close to the melting point but not melting). Under pressure, the material in the two end regions of the counterweight 12 flows into the weld 24 at the joint between the filling gap 23 and the inertia ring. During hot pressing, the protruding ends of the counterweight 12 are also hot-pressed simultaneously to ensure that both ends of the counterweight 12 can form a stable connection with the inertia ring, further improving the stability and firmness of the connection between the counterweight 12 and the inertia ring. After S33 is completed... The inertia ring is placed in a constant temperature oven for stress-relief annealing. The stress-relief annealing temperature depends on the material of the inertia ring. For example, when the material of the inertia ring is steel, the annealing temperature is 250℃-300℃ and the holding time is 120min-180min. Then it is naturally cooled to room temperature to eliminate residual stress generated during welding and hot pressing. This prevents residual stress from being released during subsequent use, which could cause the inertia ring to deform, warp, or shift in size, thereby ensuring the structural stability and dimensional accuracy of the inertia ring.

[0051] The embodiments of the invention have been described above with reference to the accompanying drawings. However, the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments without departing from the spirit of the embodiments and the scope of protection of the claims, and all of these forms are within the protection scope of the embodiments.

Claims

1. A high-precision inertia ring, comprising a plurality of arc-shaped cylinders (11), wherein the plurality of arc-shaped cylinders (11) are connected end-to-end to form a closed loop structure, characterized in that, The two adjacent arc-shaped columns (11) are fixedly connected by a weld at the splice. The splice is provided with a receiving groove (21), and the receiving groove (21) is filled with a counterweight (12). The counterweight (12) is used to correct the uniformity of the circumferential mass distribution of the inertia ring.

2. The high-precision inertia ring according to claim 1, characterized in that, The weld includes an inner weld (13) and an outer weld (14), the inner weld (13) being located in the inner ring of the inertia ring and the outer weld (14) being located in the outer ring of the inertia ring, and the receiving groove (21) being located between the inner weld (13) and the outer weld (14).

3. A high-precision inertia ring according to claim 1, characterized in that, The counterweight (12) is fixedly connected to the inertia ring by hot pressing.

4. A high-precision inertia ring according to claim 3, characterized in that, A filling gap (23) is provided between the receiving groove (21) and the counterweight (12).

5. A high-precision inertia ring according to claim 1, characterized in that, The arc-shaped column (11) includes multiple sheets (111) stacked along the inertia ring axis. Adjacent sheets (111) of the same arc-shaped column (11) are fixed by vertical laser welding. The vertical laser welding forms vertical weld beads (24) on the inner ring sidewall, outer ring sidewall and both ends of the arc-shaped column (11).

6. A circumferential mass compensation forming process for a high-precision inertia ring, applied to the high-precision inertia ring described in any one of claims 1-5, characterized in that, Includes the following steps: S1. Make the arc-shaped cylinder (11). S2. Weld the arc-shaped cylinder (11) to form the inertia ring; S3. The uniformity adjustment of the circumferential mass of the inertia ring.

7. The circumferential mass compensation forming process for a high-precision inertia ring according to claim 6, characterized in that, S3 includes the following steps: S31. The welded inertia ring is placed on the weighing assembly (3), which has a plurality of weighing sensors (32) corresponding one-to-one with the receiving groove (21) of the inertia ring. S32. Obtain the weight detection value at the corresponding position through each of the weighing sensors (32), and configure the corresponding counterweight (12) to compensate for the weight according to the weight detection value. S33. The counterweights (12) configured in S32 are installed one by one into the corresponding receiving grooves (21), and the counterweights (12) are fixed in the receiving grooves (21) by hot pressing.

8. The circumferential mass compensation forming process for a high-precision inertia ring according to claim 7, characterized in that, In S31, the weighing component (3) is first leveled, and then the inertia ring is placed on the weighing component (3).

9. The circumferential mass compensation forming process for a high-precision inertia ring according to claim 7, characterized in that, In S32, the weight M of the counterweight (12) is M = M 设 -M 测 , of which M 设 M is the preset value for the quality standard. 测 This is the weight detection value obtained in S32.

10. The circumferential mass compensation forming process for a high-precision inertia ring according to claim 7, characterized in that, After S33 is completed, the inertia ring is subjected to stress-relief annealing.

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