Mechanical combination machining method for guider

Abstract

The invention discloses a mechanical combination machining method of a guider in the technical field of mechanical combination machining of the guider, which is characterized in that a special fixture is designed, and the guider, a sealing ring and a support plate are fixed and positioned through the fixture, so that the assembly precision of the guider, the sealing ring and the support plate during assembly is ensured. The spraying groove can be machined in the sealing ring part state, the sealing ring installation edge can be directly clamped when the spraying groove in the sealing ring is machined in the part state, so that the machining precision of the spraying groove is guaranteed, meanwhile, the clamp comprises a plurality of supporting rods, the supporting rods are used for supporting rivets, and the rivets are clamped through the supporting rods. When rivets are assembled, all the rivets can be assembled in all the riveting holes at a time, the assembling efficiency is improved, the machining and assembling difficulty of the whole guider mechanical combination is reduced, meanwhile, the machining precision of the whole parts and the assembling precision between the parts are effectively improved, and the product yield can be improved while the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical assembly processing of guides, and in particular to a mechanical assembly processing method of guides. Background Art

[0002] The guide vane mechanical assembly is an important component of the gas turbine. Figure 3 As shown, it is composed of a support plate, a sealing ring and a guide, wherein the support plate and the guide are riveted and fixed, the sealing ring and the support plate are riveted and fixed, the support plate, the sealing ring and the guide are all annular, a riveting ring is fixedly provided in the inner cavity of the guide, the part of the support plate close to the axis is riveted to the sealing ring, and the part of the support plate far from the axis is riveted to the guide.

[0003] The inner surface of the sealing ring is coated to match the gas turbine rotor. In order to ensure the clearance between the guide mechanical assembly and the rotor, such as Figure 3-4 As shown, the design requires the coaxiality of the coating surface and the guide |Φ0.05|A, and the inner ring coating thickness b~b.05. Therefore, it is necessary to first ensure the coaxiality of the inner ring spray groove of the sealing ring and the guide, so as to ensure the coaxiality of the coating and the thickness of the coating. However, in the current processing procedure, the guide and the support plate are not fixed during the riveting process of the support plate and the guide. If the spray groove is processed first, it will be difficult to ensure the coaxiality of the spray groove and the guide during the subsequent assembly process. Therefore, the inner ring spray groove of the sealing ring must be processed after the guide mechanical combination is fully assembled. In this way, the processing accuracy requirements of the spray groove can be guaranteed. However, the sealing ring material has a high hardness and the cutting force is large when removing the excess. At the same time, the sealing ring is connected to the guide through a support plate of about 1~2mm. The overhang processing system has poor rigidity and there is a vibration problem. The precision spray groove size is difficult to process to meet the requirements, and the yield rate is low.

[0004] Based on this, the present invention designs a guide mechanical combination processing method to solve the above problems. Summary of the invention

[0005] To achieve the above object, the present invention provides the following technical solution: a guide mechanical assembly processing method, characterized in that:

[0006] A clamp is used to fix the sealing ring, the support plate and the guide, the clamp includes a mounting seat, a support rod, a positioning ring, a pull rod and a clamping plate, the positioning ring is fixed on the mounting seat, the support rod is inserted into the mounting seat, the pull rod is passed through the mounting seat and the clamping plate to adjust the distance between the mounting seat and the clamping plate, after the support plate and the sealing ring are riveted together, the support plate is placed from the small head end of the guide into the riveted ring inside the guide, and then the riveted ring inside the guide is supported from the other side of the riveted ring inside the guide by the support rod, and the clamping plate is tightened by the pull rod so that the clamping plate is pressed against the sealing ring, and pressure is applied to the sealing ring toward the mounting seat, so that the sealing ring and the support plate riveted together are pressed against the riveted ring inside the guide, and the positioning ring is used to position the sealing ring;

[0007] The guide mechanical combination processing method comprises the following steps:

[0008] S1, processing sealing ring spraying groove in the part state;

[0009] S2, spray the coating on the surface of the spray tank, keep the processing allowance, and rivet the sealing ring and the support plate together;

[0010] S3, align the rivet holes opened on the surface of the support plate with the rivet holes opened on the rivet ring inside the guide, and insert rivets into all the rivet holes, with the big end of the rivet facing the big end of the guide, and then fix the sealing ring and the guide by a clamp, and the support rod in the clamp is supported on the big end of the rivet;

[0011] S4, impact forming the rivet to complete the connection between the guide and the support plate;

[0012] S5, process the surface coating of the sealing ring and remove the fixture.

[0013] As a further solution of the present invention, in step S3, the method of fixing the sealing ring and the guide with a clamp is as follows:

[0014] S31, placing the clamping plate flat on the workbench, keeping the clamping plate in a horizontal state, placing the support plate and the sealing ring riveted in step S2 on the clamping plate, keeping the side of the support plate that contacts the riveted ring inside the guide facing upward;

[0015] S32, the small end of the guide is facing downward, so that the inner riveting ring of the guide contacts the support plate, and the riveting holes opened on the surface of the inner riveting ring of the guide are aligned with the riveting holes opened on the surface of the support plate;

[0016] S33, inserting rivets into the aligned riveting holes, ensuring that a rivet is inserted into each riveting hole;

[0017] S34, insert the support rod obliquely between the support plate and the guide to contact the rivet and the side of the riveted ring in the guide away from the support plate, fix the positioning ring and the mounting seat together, and then sleeve the positioning ring downward to the outer ring of the sealing ring to position the sealing ring, and at the same time insert the top end of the support rod into the mounting seat, then the pull rod passes through the mounting seat and engages with the thread of the clamping plate, and controls the clamping plate to approach the mounting seat so that the clamping plate applies pressure to the sealing ring toward the mounting seat;

[0018] S35, turn over the fixture, guide and sealing ring together half a circle so that the small end of the guide faces upward.

[0019] As a further solution of the present invention, a limiting groove is provided at one end of the positioning ring away from the mounting seat, and the limiting groove has a side wall whose diameter matches the outer diameter of the sealing ring and a bottom wall for contacting the end face of the sealing ring.

[0020] As a further solution of the present invention, in step S5, when processing the surface coating of the sealing ring, first remove the pull rod and the clamping plate on the overall fixture, and then place the guide with the small end facing up together with the mounting seat, the positioning ring and the support rod on the processing platform to support and limit the sealing ring through the upper limit groove on the positioning ring.

[0021] As a further solution of the present invention, in step S1, when processing the spraying groove, the coaxiality of the spraying groove relative to the outer circle of the sealing ring is made not greater than 0.01 mm.

[0022] As a further solution of the present invention, the clamp further comprises a base, and the base is provided with a first positioning groove for placing and positioning the clamping plate and a second positioning groove for placing and positioning the mounting seat.

[0023] As a further solution of the present invention, a positioning pin is fixedly provided on one side of the base having the second positioning groove, and the positioning pin is used to contact the outer ring surface of the large end of the guide to position the guide.

[0024] As a further solution of the present invention, the second positioning groove is in the shape of a circular ring, and the shape of the portion of the mounting seat used for inserting into the second positioning groove matches the shape of the second positioning groove.

[0025] As a further solution of the present invention, the support rod includes a vertical section for connecting to the mounting seat and a supporting section for supporting the rivet, the vertical section is perpendicular to the mounting seat, there is a preset angle between the supporting section and the vertical section, and the angle between the supporting section and the vertical section is not less than 120°.

[0026] The present invention has the following beneficial effects:

[0027] The present invention designs a special clamp, which is used to fix the guide, the sealing ring and the support plate when the support plate and the guide are riveted. Therefore, the spray slot can be processed in the sealing ring part state. When processing the spray slot in the sealing ring in the part state, the sealing ring installation edge can be directly clamped to ensure the processing accuracy of the spray slot. At the same time, the clamp includes a plurality of support rods, and the support rods are used to support rivets. When assembling rivets, all rivet holes can be assembled with rivets at a time, which improves assembly efficiency and reduces the overall processing and assembly difficulty of the guide mechanical combination. At the same time, the processing accuracy of the overall parts and the assembly accuracy between the parts are effectively improved, which can improve the processing efficiency and the product yield.

[0028] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0030] Figure 1 Schematic diagram of the clamp of the present invention.

[0031] Figure 2 This is a schematic diagram of the clamp of the present invention after flipping.

[0032] Figure 3 Schematic diagram of the guide mechanical assembly structure.

[0033] Figure 4 Schematic diagram of the spray tank structure.

[0034] Figure 5 The present invention is a flow chart of the guide mechanical assembly processing method.

[0035] Legend:

[0036] 1. Mounting seat; 2. Support rod; 3. Positioning ring; 4. Pull rod; 5. Pressure plate; 6. Limiting groove; 7. Base; 8. First positioning groove; 9. Second positioning groove; 10. Positioning pin. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0038] See also Figure 1-5 The present invention provides a guide mechanical assembly processing method, wherein the guide and the sealing ring are fixed by a clamp and then the support plate and the guide are riveted;

[0039] Among them, Figure 1-2 As shown, the clamp includes a mounting seat 1, a support rod 2, a positioning ring 3, a pull rod 4 and a clamping plate 5. The positioning ring 3 is fixed on the mounting seat 1, the support rod 2 is inserted into the mounting seat 1, and the pull rod 4 is inserted into the mounting seat 1 and the clamping plate 5 to adjust the distance between the mounting seat 1 and the clamping plate 5. Figure 1 As shown, after the support plate and the sealing ring are riveted together, the support plate is placed from the small end of the guide into the inner riveting ring of the guide, and then the inner riveting ring of the guide is supported from the other side of the inner riveting ring of the guide by the support rod 2, and the pressing plate 5 is tightened by the pull rod 4 so that the pressing plate 5 is pressed tightly on the sealing ring to apply pressure toward the mounting seat 1 to the sealing ring, so that the sealing ring and the support plate riveted together are pressed tightly on the inner riveting ring of the guide, and the positioning ring 3 is used to position the sealing ring;

[0040] When working, Figure 1-2 As shown, the sealing ring is first riveted to the support plate, and then the support plate is brought into contact with the inner riveting ring of the guide, and finally the sealing ring, the support plate and the guide are pressed together by the support rod 2 and the clamping plate 5, so that the relative positions of the guide, the sealing ring and the rivet are fixed during riveting, so that the stability of the sealing ring and the guide can be ensured when the support plate and the guide are riveted, thereby separating the processing of the spray groove of the inner ring of the sealing ring from the mechanical combination of the guide, processing the spray groove of the inner ring of the sealing ring in the state of parts, and directly pressing the sealing ring installation edge for processing to ensure the processing accuracy;

[0041] At the same time, the number of support rods 2 is the same as the number of rivet holes opened on the riveting ring inside the guide, and the positions of the support rods 2 on the mounting seat 1 correspond one-to-one to the positions of the rivet holes opened on the riveting ring inside the guide. All rivets can be supported by the support rods 2, and there is no need to repeatedly load rivets, which saves work flow and improves the supporting effect of the support rods 2 when riveting the support plate and the guide.

[0042] Thus, a new guide mechanical combination processing method can be obtained, including:

[0043] S1, processing sealing ring spraying groove in the part state;

[0044] S2, spray the coating on the surface of the spray tank, keep the processing allowance, and rivet the sealing ring and the support plate together;

[0045] S3, align the rivet holes opened on the surface of the support plate with the rivet holes opened on the rivet ring inside the guide, and insert rivets into all the rivet holes, with the big end of the rivet facing the big end of the guide, and then fix the sealing ring and the guide by a clamp, and the support rod 2 in the clamp is supported on the big end of the rivet. When fixing the guide and the sealing ring, ensure that the coaxiality between the guide and the spray tank meets the design requirements;

[0046] S4, impact forming the rivet to complete the connection between the guide and the support plate;

[0047] S5, process the surface coating of the sealing ring and remove the fixture.

[0048] In the present method, the spray groove of the inner ring of the sealing ring has been processed when the sealing ring is in the part state. When the sealing ring is in the part state, the sealing ring installation edge can be directly pressed for processing, and the processing of the spray groove is separated from the overall guide mechanical combination to ensure the processing accuracy. After the spray groove of the inner ring of the sealing ring is processed, the sealing ring and the guide that have been riveted to the support plate are pressed together by a clamp, and then the support plate and the guide are riveted. During the riveting process, the rivet is supported by the support rod 2, and the guide and the sealing ring can be relatively stationary through the cooperation of the clamping plate 5, the positioning ring 3 and the support rod 2, ensuring that the coaxiality of the spray groove of the inner ring of the sealing ring and the guide meets the design requirements after the riveting is completed, thereby reducing the processing difficulty and improving the product qualification rate.

[0049] Specifically, in step S3, the method of fixing the guide and the sealing ring by a clamp includes the following steps:

[0050] S31, placing the clamping plate 5 flat on the workbench, keeping the clamping plate 5 in a horizontal state, placing the support plate and the sealing ring riveted in step S2 on the clamping plate 5, keeping the side of the support plate that contacts the riveted ring in the guide facing upward;

[0051] S32, the small head of the guide is facing downward, so that the inner rivet ring of the guide contacts the support plate, and the rivet hole opened on the surface of the inner rivet ring of the guide is aligned with the rivet hole opened on the surface of the support plate. Since the rivet needs to be impacted during riveting, and the side of the inner rivet ring of the guide facing the small head end of the guide is not blocked, the rivet needs to be impacted from the small head end of the guide, so that the rivet is installed in the rivet hole from the side of the inner rivet ring of the guide facing the large head end of the guide. The small head end of the guide is facing downward to place the inner rivet ring of the guide on the support plate, which can facilitate the placement of the rivet in the rivet hole opened on the inner rivet ring of the guide. The rivet can be suspended in the rivet hole under the action of gravity, and the rivet can be assembled at one time;

[0052] S33, inserting rivets into the aligned riveting holes, ensuring that a rivet is inserted into each riveting hole;

[0053] S34, insert the support rod 2 obliquely between the support plate and the guide to contact the rivet and the side of the riveted ring in the guide away from the support plate, fix the positioning ring 3 and the mounting seat 1 together, and then sleeve the positioning ring 3 downward to the outer ring of the sealing ring to position the sealing ring, and at the same time insert the top end of the support rod 2 into the mounting seat 1, then the pull rod 4 passes through the mounting seat 1 and engages with the thread of the clamping plate 5, and controls the clamping plate 5 to approach the mounting seat 1 so that the clamping plate applies pressure to the sealing ring toward the mounting seat 5, such as Figure 1 As shown, at this time, the sealing ring is clamped between the pressing plate 5 and the support rod 2, so as to fix the guide, the support plate and the sealing ring, and after the assembly is completed, the rivet is pressed into the rivet hole opened in the rivet ring of the guide by the support rod 2, so as to support the rivet and prevent it from falling off;

[0054] S35, turn the fixture, guide and sealing ring half a circle, so that the small head of the guide faces upward, so that the small head of the rivet is exposed, which is convenient for subsequent riveting.

[0055] Through the above steps, the fixture is used to fix the guide, sealing ring and support plate, and all rivet holes are filled with rivets. After the entire fixture and parts are turned over, all rivets can be impacted to improve processing efficiency. There is no need to manually impact rivets one by one. At the same time, the assembly accuracy can be improved to ensure that the assembled guide mechanical combination meets the design requirements.

[0056] In the traditional solution, due to the installation edge of the inner ring of the guide, it will interfere with the riveting rod used to support the rivet. Therefore, the riveting rod in the traditional solution will be provided with a bent portion at the position used to contact the rivet, and the bent portion is perpendicular to the body of the riveting rod. In this way, when the rivet is impacted, the bent portion is easily deformed. At the same time, the rigidity of the traditional single riveting rod when supporting the rivet is poor, which may eventually cause a gap between the rivet and the riveting ring or support plate inside the guide. In the design requirements of the guide mechanical combination, in order to ensure that the parts do not loosen after riveting, it is required to use a 0.05mm feeler gauge to check the rivet head and the part fitting surface, and the feeler gauge should not be able to slide freely. Therefore, the riveting rod in the traditional solution cannot meet the requirements.

[0057] In the present solution, the support rod 2 includes a vertical section and a support section. The vertical section is perpendicular to the mounting seat 1. There is a preset angle between the support section and the vertical section, and the angle between the support section and the vertical section is not less than 120°. The support section contacts the rivet. When impacting the rivet, the impact force received by the support section can be more effectively transmitted to the vertical section. The support section and the vertical section can better provide effective support for the rivet. At the same time, the same number of support rods 2 as the rivets are installed on the mounting seat 1 to support the rivets. The rigidity is improved, and the support rod 2 can be prevented from being deformed during the impact of the rivet, so as to ensure the installation accuracy after the rivet is installed and improve product quality.

[0058] Specifically, a limiting groove 6 is provided at one end of the positioning ring 3 away from the mounting seat 1. The limiting groove 6 has a side wall with a diameter matching the outer diameter of the sealing ring and a bottom wall for contacting the end face of the sealing ring, and is used to be sleeved on the outer circumferential surface of the sealing ring when the sealing ring is clamped. When the spraying groove of the inner ring of the sealing ring is processed, the coaxiality of the spraying groove and the outer circle of the sealing ring is not greater than 0.01mm. Therefore, by positioning the outer circle of the sealing ring through the limiting groove 6, the spraying groove of the inner ring of the sealing ring can be indirectly positioned. Because when the clamp clamps the sealing ring, the inner ring of the sealing ring is provided with a coating, and the coating surface is not finely processed and has a processing allowance, therefore, it is necessary to achieve the positioning of the sealing ring during the clamping process through the cooperation of the limiting groove 6 and the outer circle of the sealing ring. At the same time, the positioning of the sealing ring by the limiting groove 6 can prevent the sealing ring from being displaced during the riveting or flipping process, and can ensure that the sealing ring will not be displaced after the sealing ring is clamped, thereby ensuring the processing accuracy;

[0059] like Figure 2 As shown, the limiting groove 6 provided on the sealing ring can also support the sealing ring when the coating is processed. When processing the coating on the surface of the sealing ring, first remove the pull rod 4 and the clamping plate 5 on the integral fixture, and then place the guide with the small end facing up together with the mounting seat 1, the positioning ring 3 and the support rod 2 on the processing platform to support and limit the sealing ring through the limiting groove 6 to prevent the sealing ring from vibrating during the coating processing. The spraying material of the coating is generally a nickel-based alloy, and the hardness is much lower than that of the high-temperature alloy material of the sealing ring. The cutting force during processing can be ignored. In order to ensure the coaxiality of the inner ring coating size with the outer ring reference |Φ0.05|A, and considering the small processing allowance and low hardness of the coating, the coating is still retained in the assembly after processing.

[0060] like Figure 1-2 As shown, the clamp also includes a base 7, and a first positioning groove 8 for placing the clamping plate 5 and a second positioning groove 9 for placing the mounting seat 1 are provided on the base 7. The first positioning groove 8 is used to position the clamping plate 5, and the second positioning groove 9 is used to position the mounting seat 1. In steps S31 to S34, the clamping plate 5 is placed in the first positioning groove 8 of the base 7 to position and fix the clamping plate 5 to prevent the clamping plate 5 from moving during the subsequent assembly of the clamp. At the same time, in step S35, after the clamp is flipped as a whole so that the small head end of the guide faces upward, the mounting seat 1 in the clamp serves as a support member and contacts the base 7 to support the entire clamp. The second positioning groove 9 is provided on the base 7 to position the mounting seat 1 to ensure that the entire clamp will not move during the impact of the rivet, thereby ensuring stability during the impact.

[0061] Further, such as Figure 2As shown, a second positioning groove 9 is opened on the base 7 and a positioning pin 10 is fixedly provided on one side. The positioning pin 10 is used to contact the outer ring surface of the big head end of the guide to position the guide. After the fixture is assembled, it is necessary to ensure that the coaxiality between the guide and the spray groove of the inner ring of the sealing ring meets the requirements. After turning over the fixture and the sealing ring, mounting plate and guide clamped by the fixture, the mounting seat 1 in the fixture is inserted into the second positioning groove 9 to position the fixture, and the positioning ring 3 in the fixture can position the sealing ring. In this way, the position of the sealing ring can be determined, and the positioning pin 10 will contact the outer ring surface wall of the big head end of the guide. The second positioning groove 9 is a circular ring. The mounting seat 1 is used to insert into the second positioning groove 9. The shape of the part of the second positioning groove 9 is consistent with the shape of the second positioning groove 9. That is to say, the overall clamp can drive the guide to rotate on the base 7, the rotation axis is the axis of the second positioning groove 9, and the rotation axis coincides with the axis of the sealing ring. In the process of the clamp driving the guide to rotate, unless the guide and the sealing ring are completely coaxial, under normal circumstances, the contact position of the outer ring surface of the guide with the positioning pin 10 during rotation will change with the change of angle and the distance from the rotation axis. If the coaxiality of the guide and the sealing ring exceeds the design requirements, then during the rotation of the guide, it will interfere with the positioning pin 10, which will increase the resistance of the guide during rotation. Therefore, it can be judged whether the coaxiality of the guide and the sealing ring after the clamp is clamped meets the requirements.

[0062] like Figure 1-2 As shown, in some examples, the first positioning groove 8 is conical, and the clamping disc 5 also has a conical portion. The conical portion of the clamping disc 5 is inserted into the first positioning groove 8 to achieve positioning of the clamping disc 5.

[0063] like Figure 1-2 As shown, in some examples, a plug hole is provided on the mounting seat 1, and a plug portion is fixedly provided at the end of the vertical section of the support rod 2. The support rod 2 is assembled with the mounting seat 1 through the plug-in cooperation with the plug hole provided on the mounting seat 1.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A guide mechanical combination processing method, characterized in that: A clamp is used to fix the sealing ring, the support plate and the guide, the clamp comprising a mounting seat (1), a support rod (2), a positioning ring (3), a pull rod (4) and a clamping plate (5), the positioning ring (3) is fixed on the mounting seat (1), the support rod (2) is inserted into the mounting seat (1), the pull rod (4) is inserted into the mounting seat (1) and the clamping plate (5) to adjust the distance between the mounting seat (1) and the clamping plate (5), and the support plate and the sealing ring are riveted together. After that, the support plate is placed from the small end of the guide onto the inner riveted ring of the guide, and then the inner riveted ring of the guide is supported from the other side of the inner riveted ring of the guide by the support rod (2), and the pressing plate (5) is tightened by the pull rod (4) so ​​that the pressing plate (5) is pressed on the sealing ring and pressure is applied to the sealing ring toward the mounting seat (1) to press the sealing ring and the support plate riveted together onto the inner riveted ring of the guide, and the positioning ring (3) is used to contact the outer ring surface of the sealing ring to position the sealing ring; The guide mechanical combination processing method The following steps are involved: S1, processing sealing ring spraying groove in the part state; S2, spray the coating on the surface of the spray tank, keep the processing allowance, and rivet the sealing ring and the support plate together; S3, aligning the rivet holes opened on the surface of the support plate with the rivet holes opened on the rivet ring inside the guide, and inserting rivets into all the rivet holes, with the big end of the rivet facing the big end of the guide, and then fixing the sealing ring and the guide by a clamp, with the support rod (2) in the clamp supported on the big end of the rivet; S4, impact forming the rivet to complete the connection between the guide and the support plate; S5, process the surface coating of the sealing ring and remove the fixture.

2. A guide mechanical assembly processing method according to claim 1, characterized in that: In step S3, the method of fixing the sealing ring and the guide with a fixture is as follows: S31, placing the clamping plate (5) flat on the workbench, keeping the clamping plate (5) in a horizontal state, placing the support plate and the sealing ring riveted in step S2 on the clamping plate (5), keeping the side of the support plate that contacts the riveted ring inside the guide facing upwards; S32, the small end of the guide is facing downward, so that the inner riveting ring of the guide contacts the support plate, and the riveting holes opened on the surface of the inner riveting ring of the guide are aligned with the riveting holes opened on the surface of the support plate; S33, inserting rivets into the aligned riveting holes, ensuring that a rivet is inserted into each riveting hole; S34, the support rod (2) is obliquely inserted between the support plate and the guide to contact the rivet and the side of the riveted ring inside the guide away from the support plate, and after the positioning ring (3) and the mounting seat (1) are fixed together, the positioning ring (3) is downwardly sleeved to the outer ring of the sealing ring to position the sealing ring, and at the same time, the top end of the support rod (2) is inserted into the mounting seat (1), and then the pull rod (4) passes through the mounting seat (1) and is threadedly engaged with the clamping plate (5), and the clamping plate (5) is controlled to approach the mounting seat (1) so that the clamping plate (5) applies pressure to the sealing ring toward the mounting seat (1); S35, turn over the fixture, guide and sealing ring together half a circle so that the small end of the guide faces upward.

3. A guide mechanical assembly processing method according to claim 1, characterized in that: A limiting groove (6) is provided at one end of the positioning ring (3) away from the mounting seat (1); the limiting groove (6) has a side wall whose diameter matches the outer diameter of the sealing ring and a bottom wall for contacting the end surface of the sealing ring.

4. The guide mechanical assembly processing method according to claim 1, characterized in that: In step S5, when processing the surface coating of the sealing ring, first remove the pull rod (4) and the clamping plate (5) on the overall clamp, and then place the guide with the small end facing upward together with the mounting seat (1), the positioning ring (3) and the support rod (2) on the processing platform to support and limit the sealing ring through the upper limit groove (6) of the positioning ring (3).

5. The guide mechanical assembly processing method according to claim 1, characterized in that: In step S1, when processing the spraying groove, the coaxiality of the spraying groove relative to the outer circle of the sealing ring is made to be no more than 0.01 mm.

6. The guide mechanical assembly processing method according to claim 1, characterized in that: The clamp further comprises a base (7), and the base (7) is provided with a first positioning groove (8) for placing and positioning the pressing plate (5) and a second positioning groove (9) for placing and positioning the mounting seat (1).

7. A guide mechanical assembly processing method according to claim 6, characterized in that: A positioning pin (10) is fixedly arranged on one side of the base (7) on which the second positioning groove (9) is formed. The positioning pin (10) is used to contact the outer ring surface of the large end of the guide to position the guide.

8. A guide mechanical assembly processing method according to claim 6, characterized in that: The second positioning groove (9) is in the shape of a circular ring, and the shape of the portion of the mounting seat (1) used for inserting into the second positioning groove (9) matches the shape of the second positioning groove (9).

9. The guide mechanical assembly processing method according to claim 1, characterized in that: The support rod (2) comprises a vertical section for connecting to the mounting seat (1) and a support section for supporting the rivet, the vertical section is perpendicular to the mounting seat (1), there is a preset angle between the support section and the vertical section, and the angle between the support section and the vertical section is not less than 120°.

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