Breather valve assembling, welding and grinding production line and production process

Abstract

The invention discloses a breather valve assembling, welding and grinding production line and production technology, and belongs to the technical field of breather valve machining. The breather valve assembling, welding and grinding production line comprises an assembling and welding tool, a grinding and detecting integrated tool and a hoisting mechanism; the grinding and detecting integrated tool comprises a tool support, the top end of the tool support is rotationally matched with a center support, a spindle is arranged at the bottom end of the center support, and a milling cutter mechanism and a grinding wheel mechanism are arranged on the center support. The main shaft is provided with two surface roughness detectors which are respectively used for detecting the roughness of a valve port of an exhalation valve and the roughness of a valve port of a suction valve; and the main shaft is provided with two laser distance measuring sensors which are respectively used for detecting the distance between the central axis of the main shaft and the inner side of the valve port of the exhalation valve and the distance between the central axis of the main shaft and the inner side of the valve port of the suction valve. By means of the assembling and welding tool, the hoisting mechanism and the grinding and detecting integrated tool, assembling and welding operation of the breather valve and milling and grinding integrated finish machining of a valve port of the breather valve and a valve port of a suction valve can be achieved, the automation degree is high, and precision is high.

Description

Technical Field

[0001] This invention belongs to the field of breathing valve processing technology, specifically relating to a breathing valve assembly, welding and grinding production line and production process. Background Technology

[0002] The structure of the breather valve is as follows Figures 1-2 As shown, it mainly consists of three parts: the upper flange 01, the middle section cylinder 02, and the bottom elliptical head flange 03. These three parts need to be processed separately before being assembled and welded together. The middle section cylinder 02 has internal functional structures, such as... Figure 2 As shown, the functional structure contains two very narrow annular surfaces: the exhalation valve port 04 and the suction valve port 05. These two annular surfaces require high-precision machining to ensure that their flatness and surface roughness meet the requirements for use in a breathing valve. Welding can cause thermal deformation; therefore, the general machining process for a breathing valve is as follows: The first step is to process and produce three parts separately: the upper flange 01, the middle section cylinder body 02 which contains internal functional structures, and the bottom elliptical head flange 03. The second step is to position, assemble, and weld the three parts together to make them a whole. The third step is to finish the breathing valve port 04 and the inhalation valve port 05 by grinding.

[0003] Currently, the first step, through mature machining processes, can be carried out relatively well. However, the second and third steps have a lower degree of automation and are the most difficult to guarantee in terms of processing quality.

[0004] Based on the problems of low automation and low precision in the second and third steps of the breather valve processing, this application proposes a breather valve assembly, welding and grinding production line and production process. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a production line for assembling, welding and grinding breather valves.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A breather valve assembly, welding, and grinding production line, including Assembly and welding fixture used to assemble and weld the upper flange, middle section cylinder and bottom elliptical head flange into a breather valve; An integrated grinding and testing fixture used to grind the valve port of a breathing valve; A hoisting mechanism used to lift the breather valve from the assembly and welding fixture station to the integrated grinding and testing fixture station; The integrated grinding and testing fixture includes a fixture support; The tooling bracket is rotatably fitted with a central bracket at its top end, and a downwardly extending spindle is provided at the bottom end of the central bracket. A milling cutter mechanism for milling the exhalation valve port and the suction valve port is provided on the central bracket on one side of the spindle, and a grinding wheel mechanism for grinding the exhalation valve port and the suction valve port is provided on the central bracket on the other side of the spindle. The main shaft is equipped with two surface roughness detectors for detecting the roughness of the exhalation valve orifice and the suction valve orifice, respectively. The main shaft is also equipped with two laser rangefinders for detecting the distance between the main shaft center axis and the inner side of the exhalation valve orifice and the distance between the main shaft center axis and the inner side of the suction valve orifice, respectively.

[0007] Preferably, the tooling bracket includes a first connecting ring, a second connecting ring, and a third connecting ring arranged sequentially from bottom to top; The first connecting ring is provided with a flange connection hole for connecting with the upper flange, the first connecting ring is provided with a first fine adjustment mechanism for driving the second connecting ring to move along the first horizontal line, and the second connecting ring is provided with a second fine adjustment mechanism for driving the third connecting ring to move along the second horizontal line. The first horizontal line and the second horizontal line are perpendicular to each other; The central support is rotated in conjunction with the third connecting ring.

[0008] Preferably, the first fine-tuning mechanism includes a first linear slide rail fixedly disposed at the top of the first connecting ring, and a first slider fixedly disposed at the bottom of the second connecting ring. The first slider and the first linear slide rail slide together along the length direction of the first horizontal line. The first linear slide rail is rotatably fitted with a first lead screw, the first slider is threadedly fitted with the first lead screw, one end of the first lead screw is connected to the output end of the first fine-tuning motor, and the central axis of the first lead screw is parallel to the first horizontal line.

[0009] Preferably, the second fine-tuning mechanism includes a second linear slide rail fixedly disposed at the top of the second connecting ring, and a second slider fixedly disposed at the bottom of the third connecting ring. The second slider and the second linear slide rail slide together along the length direction of the second horizontal line. The second linear slide rail is rotatably fitted with a second lead screw, the second slider is threadedly fitted with the second lead screw, one end of the second lead screw is connected to the output end of the second fine-tuning motor, and the central axis of the second lead screw is parallel to the second horizontal line.

[0010] Preferably, the top end of the third connecting ring is provided with an annular slide rail, and the central support is provided with an arc-shaped guide rail that cooperates with the annular slide rail; A rotation drive mechanism is provided between the third connecting ring and the central support to drive the central support to rotate along the annular slide rail.

[0011] Preferably, the milling cutter mechanism includes a milling cutter assembly, which is connected to a milling cutter vertical feed mechanism that controls its lifting and lowering, and the central support is provided with a milling cutter lateral movement mechanism for controlling the milling cutter vertical feed mechanism to move laterally. The vertical feed mechanism for the milling cutter includes a milling cutter feed bracket, on which a vertically extending milling cutter slide rail is provided. The milling cutter assembly is provided with a milling cutter slider that slides vertically with the vertically extending milling cutter slide rail. A first vertical lead screw is rotatably fitted on the milling cutter feed bracket. The first vertical lead screw is threadedly fitted with the milling cutter slider. A milling cutter feed motor is adapted to the top of the first vertical lead screw.

[0012] Preferably, the grinding wheel mechanism includes a grinding wheel assembly, which is connected to a grinding wheel vertical feed mechanism that controls its lifting and lowering, and a grinding wheel lateral movement mechanism is provided on the central support for controlling the grinding wheel vertical feed mechanism to move laterally. The vertical feed mechanism for the grinding wheel includes a grinding wheel feed bracket, on which a vertical grinding wheel slide rail extending in the vertical direction is provided. The grinding wheel assembly is provided with a grinding wheel slider that slides vertically with the vertical grinding wheel slide rail. A second vertical screw is rotatably fitted on the grinding wheel feed bracket. The second vertical screw is threadedly fitted with the grinding wheel slider. A grinding wheel feed motor is adapted to the top of the second vertical screw.

[0013] Preferably, the assembly and welding fixture includes a support base and a support mechanism, a welding mechanism, a first limiting mechanism, and a second limiting mechanism disposed on the support base; The support mechanism is used to provide coaxial support for the upper flange, the middle section of the cylinder, and the bottom elliptical head flange. The first limiting mechanism and the second limiting mechanism are used to axially limit the workpiece to be welded, which consists of the upper flange, the middle section of the cylinder, and the bottom elliptical head flange. The welding mechanism includes two robotic arms, and welding guns are provided at the tail ends of the robotic arms. The two welding guns are used to weld the upper flange, the middle section of the cylinder, and the middle section of the cylinder and the bottom elliptical head flange, respectively.

[0014] Preferably, the support mechanism includes a first support member supporting the upper flange, a second support member supporting the middle section of the cylinder, and a third support member supporting the bottom elliptical end flange. The first support member includes two first support wheels that can be supported on the radially outer side of the upper flange, one of the first support wheels being adapted to a first motor; The second support member includes two pairs of second support wheels distributed along the axial direction of the middle section of the cylinder. The second support wheels can be supported on the radial outer surface of the middle section of the cylinder, and one of the second support wheels is adapted to a second motor. The third support member includes two pairs of third support wheels distributed along the axial direction of the bottom elliptical end cap flange, one of which is equipped with a third motor.

[0015] The present invention also discloses a manufacturing process for assembling, welding, and grinding a breather valve.

[0016] A process for assembling, welding, and grinding a breather valve, implemented using a breather valve assembly, welding, and grinding production line, includes the following steps: Step 1: Use assembly and welding fixtures to assemble and weld the upper flange, middle section of the cylinder and bottom elliptical head flange into a breather valve; Step 2: Use a hoisting mechanism to hoist the breather valve from the assembly and welding fixture station to the integrated grinding and testing fixture station; Step 3: After welding, place the breather valve in an upright position with the upper flange facing upwards. Hoist the integrated tooling above the breather valve so that the spindle, milling cutter mechanism, and grinding wheel mechanism fall from top to bottom into the functional structure of the breather valve. Position the spindle and the breather valve coaxially. When the tooling bracket falls onto the upper flange, fix the tooling bracket to the upper flange. Step 4: The projections of the main shaft center axis, the exhalation valve port center axis, and the suction valve port center axis on the same horizontal plane are the main shaft projection point, the exhalation valve port projection point, and the suction valve port projection point, respectively. The main shaft is translated and adjusted so that the main shaft projection point is located at the midpoint of the line connecting the exhalation valve port projection point and the suction valve port projection point. Step 5: Use a milling cutter mechanism to mill the upper call valve port; Step 6: Simultaneously perform grinding of the upper exhalation valve port and milling of the lower suction valve port; Step 7: Grind the lower suction valve port using a grinding wheel mechanism; Step 8: Start two surface roughness testers to test the surface roughness of the exhalation valve port and the suction valve port.

[0017] The beneficial effects of this invention are: (1) The present invention can realize the assembly and welding of the breathing valve and the milling and grinding of the breathing valve port and the suction valve port by means of the assembly and welding tooling, hoisting mechanism and grinding and testing integrated tooling. It has a high degree of automation and high precision.

[0018] (2) The integrated grinding and testing tooling of the present invention can complete the milling and grinding of the exhalation valve port and the inhalation valve port in one assembly with the breathing valve, avoiding the possibility of losing the reference due to repeated clamping and ensuring the processing quality.

[0019] (3) When the tooling bracket and the breathing valve are assembled in this invention, the concentricity adjustment between the spindle and the corresponding valve port is achieved by combining the first fine adjustment mechanism and the second fine adjustment mechanism with laser ranging. After the processing is completed, the surface roughness detector detects the roughness of the corresponding valve port surface. If it does not meet the standard, it can be processed again without re-clamping until the quality of the processed surface meets the standard. The extremely high degree of automation also reduces the time for manual intervention, greatly shortens the processing cycle, and improves the processing efficiency.

[0020] (4) In the assembly welding fixture of the present invention, each of the upper flange, the middle section of the cylinder body and the bottom elliptical head flange is provided with its own support wheel. The multiple support wheels make the multiple workpieces coaxially set, thereby making the weld seam coaxial. The robotic arm controls the welding gun to remain stationary at the initial welding position, and the workpiece to be welded is rotated by the motor adapted to the support wheel. This realizes the welding operation where the workpiece to be welded rotates and the welding gun remains stationary, which solves the problem of shaking when the robotic arm rotates the welding gun or when welding manually, and enhances the consistency of the weld seam.

[0021] (5) The first limiting mechanism and the second limiting mechanism in the assembly welding fixture of the present invention can realize the axial limiting of the workpiece to be welded; two welds can be welded at the same time by two robotic arms and two welding guns, which greatly shortens the processing cycle and improves the processing efficiency. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0023] Figure 1 This is a schematic diagram of the breather valve. Figure 2 This is a schematic diagram of the internal structure of the breather valve; Figure 3 This is a schematic perspective view of the integrated grinding and testing tooling of the present invention; Figure 4 This is a schematic diagram of the tooling bracket in this invention. Figure 1 ; Figure 5 This is a schematic diagram of the tooling bracket in this invention. Figure 2 ; Figure 6 This is a schematic diagram of the structure of the first connecting ring in this invention; Figure 7 This is a schematic diagram of the structure of the second connecting ring in this invention; Figure 8 This is a schematic diagram of the structure of the third connecting ring in this invention; Figure 9 This is a schematic diagram of the central support structure in this invention. Figure 1 ; Figure 10 This is a schematic diagram of the central support structure in this invention. Figure 2 ; Figure 11 This is a schematic diagram of the central support structure in this invention. Figure 3 ; Figure 12 This is a three-dimensional schematic diagram of the integration of the grinding and testing fixture and the breather valve in this invention; Figure 13 This is a top view illustrating the combination of the integrated grinding and testing fixture and the breather valve in this invention; Figure 14 yes Figure 13 Sectional view along axis AA; Figure 15 This is a schematic diagram of the assembly and welding fixture in this invention. Figure 1 ; Figure 16 This is a schematic diagram of the assembly and welding fixture in this invention. Figure 2 ; Figure 17 This is a schematic diagram illustrating the cooperation between the welding fixture and the breather valve in this invention; Figure 18 This is a schematic diagram of the working process of the breather valve assembly, welding, and grinding production line of the present invention; in: 01. Upper flange; 02. Middle section of cylinder; 03. Bottom elliptical head flange; 04. Exit valve port; 05. Suction valve port; 11. Tooling bracket; 111. First connecting ring; 112. Second connecting ring; 113. Third connecting ring; 114. First linear slide rail; 115. First slider; 116. First lead screw; 117. First fine-tuning motor; 118. Second linear slide rail; 119. Second slider; 1110. Second lead screw; 1111. Second fine-tuning motor; 1112. Flange connection hole; 1113. Annular slide rail; 1114. Annular gear; 1115. First support block; 1116. First oblong hole; 1117. Second support block; 1118. Second oblong hole; 12. Central support; 121. Arc-shaped guide rail; 122. Rotary drive motor; 123. Drive gear; 13. Spindle; 131. Surface roughness tester; 132. Laser rangefinder sensor; 14. Milling cutter mechanism; 141. Milling cutter assembly; 142. Milling cutter feed support; 143. Milling cutter slider; 144. First vertical lead screw; 145. Milling cutter feed motor; 146. First horizontal lead screw; 147. First guide shaft; 148. Milling cutter traverse motor; 15. Grinding wheel mechanism; 151. Grinding wheel assembly; 152. Grinding wheel feed bracket; 153. Grinding wheel slider; 154. Second vertical lead screw; 155. Grinding wheel feed motor; 156. Second horizontal lead screw; 157. Second guide shaft; 158. Grinding wheel transverse motor; 21. Support base; 211. Welding guide rail; 22. First support wheel; 221. First support frame; 222. First motor; 223. First wheel groove; 23. Second support wheel; 231. Second support frame; 232. Second motor; 24. Third support wheel; 241. Third support frame; 242. Third motor; 243. Second wheel groove; 25. Robotic arm; 251. Welding torch; 26. First fixed part; 261. First swing part; 262. First limit wheel; 263. First limit hydraulic cylinder; 264. First fixed plate; 265. First swing plate; 266. First fixed shaft; 267. First swing arm shaft; 27. First fixed part; 271. Second swing part; 272. Second limit wheel; 273. Second limit hydraulic cylinder; 274. Second fixed plate; 275. Second swing plate; 276. Second fixed shaft; 277. Second swing arm shaft. Detailed Implementation

[0024] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] In this invention, terms such as "upper," "lower," "bottom," and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely relational terms determined for the convenience of describing the structural relationship of the various components or elements of this invention, and do not specifically refer to any component or element in this invention, and should not be construed as limiting this invention.

[0027] In this invention, terms such as "connected" and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this invention based on the specific circumstances, and they should not be construed as limitations on the invention.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Example 1: like Figures 2-11 As shown, a breather valve assembly, welding, and grinding production line includes... Assembly and welding fixture used to assemble and weld the upper flange 01, the middle section cylinder 02 and the bottom elliptical head flange 03 into a breather valve; An integrated grinding and testing fixture used to grind the valve port of a breathing valve; A hoisting mechanism is used to lift the breather valve from the assembly and welding fixture station to the integrated grinding and testing fixture station. The hoisting mechanism is existing technology, such as a truss. The integrated grinding and testing fixture includes a fixture bracket 11 that can be fixed at the end face of the upper flange 01 of the breather valve; The top of the tooling bracket 11 is rotatably fitted with a central bracket 12. The bottom of the central bracket 12 is provided with a downwardly extending spindle 13. A milling cutter mechanism 14 for milling the exhalation valve port 04 and the suction valve port 05 is provided on the central bracket 12 on one side of the spindle 13. A grinding wheel mechanism 15 for grinding the exhalation valve port 04 and the suction valve port 05 is provided on the central bracket 12 on the other side of the spindle 13. The main shaft 13 is equipped with two surface roughness detectors 131 for detecting the roughness of the exhalation valve port 04 and the suction valve port 05, respectively. The main shaft 13 is also equipped with two laser rangefinders 132 for detecting the distance between the central axis of the main shaft 13 and the inner side of the exhalation valve port 04, and the distance between the central axis of the main shaft 13 and the inner side of the suction valve port 05, respectively.

[0030] Preferably, the tooling bracket 11 includes a first connecting ring 111, a second connecting ring 112, and a third connecting ring 113 arranged sequentially from bottom to top; The first connecting ring 111 is provided with a flange connecting hole 1112 for connecting with the upper flange 01. The first connecting ring 111 is provided with a first fine-tuning mechanism for driving the second connecting ring 112 to move along the first horizontal line. The second connecting ring 112 is provided with a second fine-tuning mechanism for driving the third connecting ring 113 to move along the second horizontal line. The first horizontal line and the second horizontal line are perpendicular to each other; The central support 12 is rotatably engaged with the third connecting ring 113.

[0031] Preferably, the first fine-tuning mechanism includes a first linear slide rail 114 fixedly disposed at the top of the first connecting ring 111, and a first slider 115 fixedly disposed at the bottom of the second connecting ring 112. The first slider 115 and the first linear slide rail 114 slide together along the length direction of the first horizontal line. The first linear slide rail 114 is rotatably fitted with a first lead screw 116, the first slider 115 is threadedly fitted with the first lead screw 116, one end of the first lead screw 116 is connected to the output end of the first fine-tuning motor 117, and the central axis of the first lead screw 116 is parallel to the first horizontal line.

[0032] Two sets of the first fine-tuning mechanism are set up.

[0033] The first fine-tuning motor 117 drives the first lead screw 116 to rotate, causing the first slider 115 to move the second connecting ring 112, the third connecting ring 113, and the central support 12 along the first horizontal line. Additionally, the top of the first connecting ring 111 is provided with several first support blocks 1115, and the second connecting ring 112 is provided with first oblong holes 1116 corresponding to the first support blocks 1115. The length direction of the first oblong holes 1116 is consistent with the length direction of the first horizontal line. After the second connecting ring 112 has been fine-tuned along the first horizontal line, fastening bolts are installed in the first oblong holes 1116 to connect with the corresponding first support blocks 1115 below, thereby fixing the second connecting ring 112 to the first connecting ring 111.

[0034] Preferably, the second fine-tuning mechanism includes a second linear slide rail 118 fixedly disposed at the top of the second connecting ring 112, and a second slider 119 fixedly disposed at the bottom of the third connecting ring 113. The second slider 119 and the second linear slide rail 118 slide in cooperation along the length direction of the second horizontal line. The second linear slide rail 118 is rotatably fitted with a second lead screw 1110, the second slider 119 is threadedly fitted with the second lead screw 1110, one end of the second lead screw 1110 is connected to the output end of the second fine-tuning motor 1111, and the central axis of the second lead screw 1110 is parallel to the second horizontal line.

[0035] Two sets of the second fine-tuning mechanism are set up.

[0036] The second fine-tuning motor 1111 drives the second lead screw 1110 to rotate, causing the second slider 119 to move the third connecting ring 113 and the central support 12 along the second horizontal line. Additionally, the top of the second connecting ring 112 is provided with several second support blocks 1117, and the third connecting ring 113 is provided with second oblong holes 1118 corresponding to the second support blocks 1117. The length direction of the second oblong holes 1118 is consistent with the length direction of the second horizontal line. After the third connecting ring 113 has been fine-tuned along the second horizontal line, fastening bolts are installed in the second oblong holes 1118 to connect with the corresponding second support blocks 1117 below, thereby fixing the third connecting ring 113 to the second connecting ring 112.

[0037] Preferably, the top end of the third connecting ring 113 is provided with an annular slide rail 1113, and the central support 12 is provided with an arc-shaped guide rail 121 that cooperates with the annular slide rail 1113. The arc-shaped guide rail 121 and the annular slide rail 1113 cooperate to realize the rotational cooperation between the central support 12 and the third connecting ring 113; wherein the central axis of the annular slide rail 1113 is collinear with the central axis of the main shaft 13. A rotation drive mechanism is provided between the third connecting ring 113 and the central support 12 to drive the central support 12 to rotate along the annular slide rail 1113.

[0038] The rotation drive mechanism includes a ring gear 1114 fixedly mounted on the third connecting ring 113. The ring gear 1114 is coaxially mounted with the ring slide rail 1113. A rotation drive motor 122 is mounted on the central support 12. A drive gear 123 is mounted at the output end of the rotation drive motor 122. The drive gear 123 meshes with the ring gear 1114.

[0039] Preferably, the milling cutter mechanism 14 includes a milling cutter assembly 141, which is connected to a milling cutter vertical feed mechanism that controls its lifting and lowering. The central support 12 is provided with a milling cutter lateral movement mechanism for controlling the milling cutter vertical feed mechanism to move laterally. The milling cutter assembly 141 includes a milling cutter body and a milling cutter motor for driving the milling cutter body to rotate. The vertical feed mechanism for the milling cutter includes a milling cutter feed bracket 142, on which a vertically extending vertical slide rail for the milling cutter is provided. The milling cutter assembly 141 is provided with a milling cutter slider 143 that slides vertically with the vertical slide rail. A first vertical lead screw 144 is rotatably fitted on the milling cutter feed bracket 142. The first vertical lead screw 144 is threadedly fitted with the milling cutter slider 143. A milling cutter feed motor 145 is adapted to the top of the first vertical lead screw 144.

[0040] The milling cutter feed motor 145 drives the first vertical lead screw 144 to rotate, causing the milling cutter slider 143 to move the milling cutter assembly 141 in the vertical direction so that the milling cutter body in the milling cutter assembly 141 contacts the end face of the valve port to be milled.

[0041] Preferably, the milling cutter traverse mechanism includes a first transverse lead screw 146 and a first guide shaft 147 that are parallel to each other. The first transverse lead screw 146 is perpendicular to the first vertical lead screw 144. The first transverse lead screw 146 is rotatably fitted on the central support 12, and the first guide shaft 147 is fixedly mounted on the central support 12. The first transverse lead screw 146 is threadedly engaged with the milling cutter feed bracket 142, and the first guide shaft 147 is slidably engaged with the milling cutter feed bracket 142. One end of the first transverse lead screw 146 is fitted with a milling cutter transverse motor 148.

[0042] The milling cutter traverse motor 148 drives the first transverse lead screw 146 to rotate, causing the milling cutter feed bracket 142 to move the milling cutter assembly 141 laterally, so that the central axis of the milling cutter body in the milling cutter assembly 141 passes downward through the valve port end face to be milled.

[0043] Preferably, the grinding wheel mechanism 15 includes a grinding wheel assembly 151, which is connected to a grinding wheel vertical feed mechanism that controls its lifting and lowering. The central support 12 is provided with a grinding wheel lateral movement mechanism for controlling the grinding wheel vertical feed mechanism to move laterally. The grinding wheel assembly 151 includes a grinding wheel body and a grinding wheel motor for driving the grinding wheel body to rotate. The vertical feed mechanism for the grinding wheel includes a grinding wheel feed bracket 152, on which a vertical grinding wheel slide rail extending in the vertical direction is provided. A grinding wheel slider 153 is provided on the grinding wheel assembly 151, which slides vertically with the vertical grinding wheel slide rail. A second vertical screw 154 is rotatably fitted on the grinding wheel feed bracket 152. The second vertical screw 154 is threadedly fitted with the grinding wheel slider 153. A grinding wheel feed motor 155 is adapted to the top of the second vertical screw 154.

[0044] The grinding wheel feed motor 155 drives the second vertical lead screw 154 to rotate, causing the grinding wheel slider 153 to drive the grinding wheel assembly 151 to move vertically, so that the grinding wheel assembly 151 contacts the end face of the valve port to be ground.

[0045] Preferably, the grinding wheel transverse movement mechanism includes a second transverse lead screw 156 and a second guide shaft 157 that are parallel to each other. The second transverse lead screw 156 is perpendicular to the second vertical lead screw 154. The second transverse lead screw 156 is rotatably fitted on the central support 12, and the second guide shaft 157 is fixedly mounted on the central support 12. The second transverse lead screw 156 is threadedly engaged with the grinding wheel feed bracket 152, and the second guide shaft 157 is slidably engaged with the grinding wheel feed bracket 152; One end of the second transverse lead screw 156 is fitted with a grinding wheel transverse motor 158. The first transverse lead screw 146 and the second transverse lead screw 156 are parallel.

[0046] The grinding wheel transverse motor 158 drives the second transverse lead screw 156 to rotate, causing the grinding wheel feed bracket 152 to drive the grinding wheel assembly 151 to move laterally, so that the central axis of the grinding wheel body in the grinding wheel assembly 151 passes downward through the end face of the valve port to be ground.

[0047] Preferred, such as Figures 15-17 As shown, the assembly and welding fixture includes a support base 21 and a support mechanism, a welding mechanism, a first limiting mechanism, and a second limiting mechanism disposed on the support base 21. The supporting mechanism provides coaxial support for the upper flange 01, the middle section cylinder 02, and the bottom elliptical head flange 03. The first and second limiting mechanisms provide axial limiting for the workpiece to be welded, which consists of the upper flange 01, the middle section cylinder 02, and the bottom elliptical head flange 03. The welding mechanism includes two robotic arms 25, each with a welding torch 251 at its tail end. The two welding torches 251 are used to weld the upper flange 01 and the middle section cylinder 02, and the middle section cylinder 02 and the bottom elliptical head flange 03, respectively. The robotic arms 25 are existing technology, and their specific structure will not be described in detail here. Specifically, a welding guide rail 211 extending along the axial direction of the breather valve is provided on the support base 21. The bottom end of the robotic arm 25 slides with the welding guide rail 211 to achieve movement along the welding guide rail 211. A robotic arm movement drive mechanism is provided between the robotic arm 25 and the welding guide rail 211 to drive the robotic arm 25 to move along the welding guide rail 211. The robotic arm movement drive mechanism can be implemented using existing technology and will not be described in detail here.

[0048] Preferably, the support mechanism includes a first support member supporting the upper flange 01, a second support member supporting the middle section cylinder 02, and a third support member supporting the bottom elliptical end flange 03; The first support member includes two first support wheels 22 that can be supported on the radially outer side of the upper flange 01. The first support wheels 22 are mounted on the support base 21 via a first support frame 221. One of the first support wheels 22 is adapted to a first motor 222. The second support member includes two pairs of second support wheels 23 distributed along the axial direction of the middle section cylinder 02. The second support wheels 23 can be supported on the radial outer surface of the middle section cylinder 02. The second support wheels 23 are mounted on the support base 21 through the second support frame 231. One of the second support wheels 23 is adapted to the second motor 232. The third support member includes two pairs of third support wheels 24 distributed along the axial direction of the bottom elliptical head flange 03. One pair of third support wheels 24 can be supported on the radial outer surface of the elliptical head in the bottom elliptical head flange 03, and the other pair of third support wheels 24 can be supported on the radial outer surface of the flange in the bottom elliptical head flange 03. The third support wheels 24 are mounted on the support base 21 through a third support frame 241. One of the third support wheels 24 is adapted to a third motor 242, and the third support wheel 24 supported on the radial outer surface of the elliptical head in the bottom elliptical head flange 03 is adapted to a third motor 242.

[0049] Preferably, the first limiting mechanism includes a first fixing part 26 fixedly mounted on the support base 21, a first swing part 261 hinged to the top of the first fixing part 26, and a first limiting wheel 262 for axially limiting the upper flange 01 hinged to the end of the first swing part 261 away from the first fixing part 26; the first swing part 261 is hinged to the piston rod of the first limiting hydraulic cylinder 263, and the bottom end of the first limiting hydraulic cylinder 263 is hinged to the support base 21; Specifically, the first fixed part 26 includes two first fixed plates 264, the first swing part 261 includes two first swing plates 265, the lower ends of the two first swing plates 265 are connected by a first fixed shaft 266, the two ends of the first fixed shaft 266 are hinged to the first fixed plate 264, the top end of the first swing plate 265 is hinged to a first limiting wheel 262, a first swing rod shaft 267 is provided between the two first swing plates 265, and the piston rod of the first limiting hydraulic cylinder 263 is hinged to the first swing rod shaft 267. The second limiting mechanism includes a second fixing part 27 fixedly mounted on the support base 21. A second swing part 271 is hinged to the top of the second fixing part 27. A second limiting wheel 272 for axially limiting the bottom elliptical end flange 03 is hinged to the end of the second swing part 271 away from the second fixing part 27. The second swing part 271 is hinged to the piston rod of the second limiting hydraulic cylinder 273. The bottom end of the second limiting hydraulic cylinder 273 is hinged to the support base 21. Specifically, the second fixed part 27 includes two second fixed plates 274, the second swing part 271 includes two second swing plates 275, the lower ends of the two second swing plates 275 are connected by a second fixed shaft 276, the two ends of the second fixed shaft 276 are hinged to the second fixed plates 274, the top end of the second swing plate 275 is hinged to a second limit wheel 272, a second swing rod shaft 277 is provided between the two second swing plates 275, and the piston rod of the second limit hydraulic cylinder 273 is hinged to the second swing rod shaft 277.

[0050] Specifically, a first groove 223 is provided on the radial outer surface of the first support wheel 22. When the first support wheel 22 supports the upper flange 01, the upper flange 01 is located in the first groove 223. A second groove 243 is provided on the radial outer surface of a pair of third support wheels 24 supporting the flange plate in the bottom elliptical head flange 03. When the third support wheel 24 supports the flange plate in the bottom elliptical head flange 03, the flange plate in the bottom elliptical head flange 03 is located in the second groove 243.

[0051] In this application, the surfaces of the first limiting wheel 262 and the second limiting wheel 272 are coated with Teflon.

[0052] Example 2: A manufacturing process for assembling, welding, and grinding a breather valve, implemented using the breather valve assembly, welding, and grinding production line in Example 1, includes the following steps: Step 1: Use assembly and welding fixtures to assemble and weld the upper flange 01, the middle section cylinder 02 and the bottom elliptical head flange 03 into a breather valve; The specific steps for step 1 are as follows: Two robotic arms 25 drive the welding torch 251 to lift and open outwards. The first limiting hydraulic cylinder 263 drives the first limiting wheel 262 and the second limiting hydraulic cylinder 273 drives the second limiting wheel 272 to open outwards, exposing each support wheel. The upper flange 01 is hoisted onto two first support wheels 22, the middle section cylinder 02 is hoisted onto two pairs of second support wheels 23, and the bottom elliptical head flange 03 is hoisted onto two pairs of third support wheels 24. Each support wheel provides coaxial support for the upper flange 01, the middle section cylinder 02, and the bottom elliptical head flange 03. The welding surfaces between the upper flange 01 and the middle section cylinder 02 are in contact, and the welding surfaces between the middle section cylinder 02 and the bottom elliptical head flange 03 are in contact, so that the two welding positions meet the welding requirements. The first limiting hydraulic cylinder 263 drives the first limiting wheel 262 and the second limiting hydraulic cylinder 273 drives the second limiting wheel 272 to move inward, so that the first limiting wheel 262 contacts the upper flange 01 and the second limiting wheel 272 contacts the bottom elliptical head flange 03, thereby axially limiting the workpiece to be welded, which consists of the upper flange 01, the middle section cylinder 02 and the bottom elliptical head flange 03. The robotic arm 25 drives its respective welding torch 251 back to its respective welding starting position. The first motor 222, the second motor 232, and the third motor 242 start, driving the workpiece to be welded to rotate slowly and uniformly. The welding torch 251 begins welding until the entire circumferential weld is completed. In this application, the first limiting wheel 262 and the second limiting wheel 272 limit the axial direction of the workpiece to be welded, which does not affect the rotation of the workpiece. Step 2, as follows Figure 18 As shown, a hoisting mechanism is used to hoist the breather valve from the assembly and welding fixture station to the integrated grinding and testing fixture station; Specifically, hoisting ropes are tied at the connection between the upper flange 01 and the middle section of the cylinder 02, and the hoisting mechanism hoists the breather valve through the hoisting ropes; Step 3: After welding, place the breather valve in an upright position with the upper flange 01 facing upwards. Hoist the integrated fixture above the breather valve, allowing the spindle 13, milling cutter mechanism 14, and grinding wheel mechanism 15 to fall from top to bottom into the functional structure of the breather valve. Position the spindle 13 coaxially with the breather valve. When the fixture bracket 11 falls onto the upper flange 01, fix the fixture bracket 11 to the upper flange 01. Figures 12-14 As shown, specifically, when the first connecting ring 111 falls onto the upper flange 01, bolts are used to fix the first connecting ring 111 to the upper flange 01. Step 4: The projections of the central axis of the main spindle 13, the central axis of the exhalation valve port 04, and the central axis of the suction valve port 05 onto the same horizontal plane are the projection points of the main spindle 13, the exhalation valve port 04, and the suction valve port 05, respectively. The main spindle 13 is translated and adjusted so that the projection point of the main spindle 13 is located at the midpoint of the line connecting the projection points of the exhalation valve port 04 and the suction valve port 05. Welding errors cause the central axes of the exhalation valve port 04 and the suction valve port 05 to be not completely collinear, but to have a certain coaxiality error. Adjusting the main spindle 13 so that its central axis is located between the central axes of the exhalation valve port 04 and the suction valve port 05 can ensure that the coaxiality of the main spindle 13 and the exhalation valve port 04, and the coaxiality of the main spindle 13 and the suction valve port 05 are both within the error range. Specifically, step 4 includes the following sub-steps: Step 41: The rotary drive motor 122 is started, causing the central support 12 to drive the spindle 13, milling cutter mechanism 14, and grinding wheel mechanism 15 to rotate one revolution around the central axis of the spindle 13. During this process, the two laser rangefinders 132 are working. The upper laser rangefinder 132 detects the distance between the central axis of the main shaft 13 and the inner side of the exhalation valve port 04, obtains the inner contour line of the exhalation valve port 04 on the test plane of the upper laser rangefinder 132, obtains the fitting center of the inner contour line of the exhalation valve port 04, and takes the vertical line passing through the fitting center of the inner contour line of the exhalation valve port 04 as the central axis of the exhalation valve port 04. The acquisition of the fitting center of the inner contour line of the exhalation valve port 04 can be achieved using existing technology, and will not be elaborated here. The lower laser rangefinder 132 detects the distance between the central axis of the main shaft 13 and the inner side of the suction valve port 05, and obtains the inner contour line of the suction valve port 05 on the test plane of the lower laser rangefinder 132, thus obtaining the fitting center of the inner contour line of the suction valve port 05. The vertical line passing through the fitting center of the inner contour line of the suction valve port 05 is taken as the central axis of the suction valve port 05. The acquisition of the fitting center of the inner contour line of the suction valve port 05 can be achieved using existing technology, and will not be elaborated here. Step 42: Rotate the first fine-tuning motor 117 to drive the first lead screw 116 to rotate, causing the first slider 115 to move the second connecting ring 112, the third connecting ring 113 and the central support 12 along the first horizontal line. The second fine-tuning motor 1111 drives the second lead screw 1110 to rotate, causing the second slider 119 to move the third connecting ring 113 and the central support 12 along the second horizontal line, thereby realizing the translation adjustment of the main shaft 13. After the adjustment is completed, the projection point of the main shaft 13 is located at the midpoint of the line connecting the projection points of the exhalation valve port 04 and the suction valve port 05. The specific translation strategy is as follows: Determine a horizontal plane, determine the projection point coordinates of the central axis of the exhalation valve port 04 and the central axis of the suction valve port 05 on the horizontal plane, then obtain the coordinates of the midpoint of the line connecting the two projection points, use the coordinates of the midpoint as the endpoint coordinates, obtain the projection point coordinates of the central axis of the main shaft 13 on the horizontal plane before the translation, use them as the initial coordinates, and translate the main shaft 13 from the initial coordinate position to the endpoint coordinate position. Step 5: The upper call valve port 04 is milled using the milling cutter mechanism 14. Specifically, the milling cutter traverse motor 148 drives the first transverse lead screw 146 to rotate, causing the milling cutter feed bracket 142 to move the milling cutter assembly 141 laterally, so that the central axis of the milling cutter body in the milling cutter assembly 141 passes downward through the end face of the call valve port 04. The milling cutter feed motor 145 drives the first vertical lead screw 144 to rotate, causing the milling cutter slider 143 to move the milling cutter assembly 141 vertically, so that the milling cutter body in the milling cutter assembly 141 contacts the end face of the call valve port 04. The milling cutter motor drives the milling cutter body to rotate, and at the same time, the rotation drive motor 122 starts, and the central bracket 12 keeps rotating, completing the milling of the call valve port 04. After that, the milling cutter assembly 141 is reset. Step 6: Simultaneously perform grinding of the upper exhalation valve port 04 and milling of the lower suction valve port 05, specifically as follows: The grinding wheel transverse motor 158 drives the second transverse lead screw 156 to rotate, causing the grinding wheel feed bracket 152 to drive the grinding wheel assembly 151 to move laterally, so that the central axis of the grinding wheel body in the grinding wheel assembly 151 passes downward through the end face of the exhalation valve port 04. The grinding wheel feed motor 155 drives the second vertical lead screw 154 to rotate, causing the grinding wheel slider 153 to drive the grinding wheel assembly 151 to move vertically, so that the grinding wheel body in the grinding wheel assembly 151 contacts the end face of the exhalation valve port 04. The milling cutter traverse motor 148 drives the first transverse lead screw 146 to rotate, causing the milling cutter feed support 142 to move the milling cutter assembly 141 laterally, so that the central axis of the milling cutter body in the milling cutter assembly 141 passes downward through the end face of the suction valve port 05. The milling cutter feed motor 145 drives the first vertical lead screw 144 to rotate, causing the milling cutter slider 143 to move the milling cutter assembly 141 vertically, so that the milling cutter body in the milling cutter assembly 141 contacts the end face of the suction valve port 05. The grinding wheel motor drives the grinding wheel body to rotate, and the milling cutter motor drives the milling cutter body to rotate. The rotation drive motor 122 starts, and the central support 12 keeps rotating. The grinding of the upper exhalation valve port 04 and the milling of the lower suction valve port 05 are performed synchronously. After the processing is completed, the milling cutter assembly 141 and the grinding wheel assembly 151 are reset. Step 7: Grinding is performed using the lower suction valve port 05 of the grinding wheel mechanism 15, specifically as follows: The grinding wheel transverse motor 158 drives the second transverse lead screw 156 to rotate, causing the grinding wheel feed bracket 152 to drive the grinding wheel assembly 151 to move laterally, so that the central axis of the grinding wheel body in the grinding wheel assembly 151 passes downward through the end face of the suction valve port 05. The grinding wheel feed motor 155 drives the second vertical lead screw 154 to rotate, causing the grinding wheel slider 153 to drive the grinding wheel assembly 151 to move vertically, so that the grinding wheel body in the grinding wheel assembly 151 contacts the end face of the suction valve port 05. The grinding wheel motor drives the grinding wheel body to rotate, and at the same time the rotation drive motor 122 starts, and the central bracket 12 keeps rotating, completing the grinding process on the suction valve port 05. After that, the grinding wheel assembly 151 is reset. Step 8: Start the two surface roughness testers 131 to test the surface roughness of the exhalation valve port 04 and the suction valve port 05. If the roughness does not meet the requirements, the valve ports that do not meet the requirements shall be re-milled and ground.

[0053] This application utilizes an integrated assembly and welding fixture, a hoisting mechanism, and a grinding and testing fixture to achieve the assembly and welding of the breathing valve, as well as the integrated milling and grinding of the exhalation valve port 04 and the suction valve port 05. It features a high degree of automation and high precision.

[0054] The integrated grinding and testing fixture of this application can complete the milling and grinding of the exhalation valve port 04 and the suction valve port 05 in one assembly with the breather valve, avoiding the possibility of losing the reference due to repeated clamping and ensuring the processing quality.

[0055] In this application, when the tooling bracket 11 is assembled with the breather valve, the concentricity adjustment between the spindle 13 and the corresponding valve port is achieved by combining the first fine-tuning mechanism and the second fine-tuning mechanism with laser ranging. After processing, the surface roughness tester 131 detects the roughness of the corresponding valve port surface. If it does not meet the standard, it can be processed again without re-clamping until the quality of the processed surface meets the standard. The extremely high degree of automation also reduces the time for manual intervention, greatly shortens the processing cycle, and improves processing efficiency.

[0056] In this application, the welding fixture is equipped with its own support wheels for the upper flange 01, the middle section cylinder 02, and the bottom elliptical head flange 03. The multiple support wheels enable the multiple workpieces to be set coaxially, thereby making the weld seam coaxial. The robotic arm 25 controls the welding torch 251 to remain stationary in the initial welding position, and the workpiece to be welded is rotated through the motor adapted to the support wheels. This realizes the welding operation where the workpiece to be welded rotates while the welding torch remains stationary, solving the problem of vibration when the robotic arm 25 rotates the welding torch or when welding manually, and enhancing the consistency of the weld seam.

[0057] The first and second limiting mechanisms in the welding fixture of this application can achieve axial limiting of the workpiece to be welded; two robotic arms 25 and two welding guns 251 can weld two welds at the same time, which greatly shortens the processing cycle and improves processing efficiency.

[0058] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, they are not intended to limit the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A production line for assembling, welding, and grinding breather valves, characterized in that, include Assembly and welding fixture used to assemble and weld the upper flange (01), the middle section cylinder (02) and the bottom elliptical end flange (03) into a breather valve; An integrated grinding and testing fixture used to grind the valve port of a breathing valve; A hoisting mechanism used to lift the breather valve from the assembly and welding fixture station to the integrated grinding and testing fixture station; The integrated grinding and testing fixture includes a fixture bracket (11). The tooling bracket (11) is rotatably fitted with a central bracket (12) at its top end. The bottom end of the central bracket (12) is provided with a downwardly extending spindle (13). A milling cutter mechanism (14) for milling the exhalation valve port (04) and the suction valve port (05) is provided on the central bracket (12) on one side of the spindle (13). A grinding wheel mechanism (15) for grinding the exhalation valve port (04) and the suction valve port (05) is provided on the central bracket (12) on the other side of the spindle (13). The main shaft (13) is equipped with two surface roughness detectors (131) for detecting the roughness of the exhalation valve port (04) and the suction valve port (05), respectively. The main shaft (13) is also equipped with two laser rangefinders (132) for detecting the distance between the central axis of the main shaft (13) and the inner side of the exhalation valve port (04) and the distance between the central axis of the main shaft (13) and the inner side of the suction valve port (05), respectively.

2. The breather valve assembly, welding, and grinding production line as described in claim 1, characterized in that, The tooling bracket (11) includes a first connecting ring (111), a second connecting ring (112), and a third connecting ring (113) arranged sequentially from bottom to top. The first connecting ring (111) is provided with a flange connection hole (1112) for connecting with the upper flange (01), the first connecting ring (111) is provided with a first fine adjustment mechanism for driving the second connecting ring (112) to move along the first horizontal line, and the second connecting ring (112) is provided with a second fine adjustment mechanism for driving the third connecting ring (113) to move along the second horizontal line. The first horizontal line and the second horizontal line are perpendicular to each other; The central support (12) rotates with the third connecting ring (113).

3. The breather valve assembly, welding, and grinding production line as described in claim 2, characterized in that, The first fine-tuning mechanism includes a first linear slide rail (114) fixedly disposed at the top of the first connecting ring (111), and a first slider (115) fixedly disposed at the bottom of the second connecting ring (112). The first slider (115) and the first linear slide rail (114) slide together along the length direction of the first horizontal line. The first linear slide rail (114) is rotatably fitted with a first lead screw (116), the first slider (115) is threadedly fitted with the first lead screw (116), one end of the first lead screw (116) is connected to the output end of the first fine-tuning motor (117), and the central axis of the first lead screw (116) is parallel to the first horizontal line.

4. The breather valve assembly, welding, and grinding production line as described in claim 2, characterized in that, The second fine-tuning mechanism includes a second linear slide rail (118) fixedly disposed at the top of the second connecting ring (112), and a second slider (119) fixedly disposed at the bottom of the third connecting ring (113). The second slider (119) and the second linear slide rail (118) slide together along the length direction of the second horizontal line. The second linear slide rail (118) is rotatably fitted with a second lead screw (1110), the second slider (119) is threadedly fitted with the second lead screw (1110), one end of the second lead screw (1110) is connected to the output end of the second fine-tuning motor (1111), and the central axis of the second lead screw (1110) is parallel to the second horizontal line.

5. The breather valve assembly, welding, and grinding production line as described in claim 1, characterized in that, The top end of the third connecting ring (113) is provided with an annular slide rail (1113), and the central support (12) is provided with an arc-shaped guide rail (121) that cooperates with the annular slide rail (1113). A rotation drive mechanism is provided between the third connecting ring (113) and the central support (12) to drive the central support (12) to rotate along the annular slide rail (1113).

6. The breather valve assembly, welding, and grinding production line as described in claim 1, characterized in that, The milling cutter mechanism (14) includes a milling cutter assembly (141), which is connected to a milling cutter vertical feed mechanism that controls its lifting and lowering. The central support (12) is provided with a milling cutter lateral movement mechanism for controlling the milling cutter vertical feed mechanism to move laterally. The vertical feed mechanism for the milling cutter includes a milling cutter feed bracket (142), on which a vertical slide rail for the milling cutter extends in the vertical direction is provided. The milling cutter assembly (141) is provided with a milling cutter slider (143) that slides vertically with the vertical slide rail. A first vertical lead screw (144) is rotatably fitted on the milling cutter feed bracket (142). The first vertical lead screw (144) is threadedly fitted with the milling cutter slider (143). A milling cutter feed motor (145) is adapted to the top of the first vertical lead screw (144).

7. The breather valve assembly, welding, and grinding production line as described in claim 1, characterized in that, The grinding wheel mechanism (15) includes a grinding wheel assembly (151), which is connected to a grinding wheel vertical feed mechanism that controls its lifting and lowering. The central support (12) is provided with a grinding wheel lateral movement mechanism for controlling the grinding wheel vertical feed mechanism to move laterally. The vertical feed mechanism of the grinding wheel includes a grinding wheel feed bracket (152), on which a vertical slide rail extending in the vertical direction is provided. The grinding wheel assembly (151) is provided with a grinding wheel slider (153) that slides vertically with the vertical slide rail. A second vertical screw (154) is rotatably fitted on the grinding wheel feed bracket (152). The second vertical screw (154) is threadedly fitted with the grinding wheel slider (153). The top end of the second vertical screw (154) is fitted with a grinding wheel feed motor (155).

8. The breather valve assembly, welding, and grinding production line as described in claim 1, characterized in that, The assembly and welding fixture includes a support base (21) and a support mechanism, a welding mechanism, a first limiting mechanism, and a second limiting mechanism disposed on the support base (21); The support mechanism is used to provide coaxial support for the upper flange (01), the middle section cylinder (02), and the bottom elliptical head flange (03). The first limiting mechanism and the second limiting mechanism are used to axially limit the workpiece to be welded, which consists of the upper flange (01), the middle section cylinder (02), and the bottom elliptical head flange (03). The welding mechanism includes two robotic arms (25). The tail end of the robotic arms (25) is equipped with a welding gun (251). The two welding guns (251) are used to weld the upper flange (01), the middle section cylinder (02), and the middle section cylinder (02) and the bottom elliptical head flange (03), respectively.

9. The breather valve assembly, welding, and grinding production line as described in claim 8, characterized in that, The support mechanism includes a first support member that supports the upper flange (01), a second support member that supports the middle section of the cylinder (02), and a third support member that supports the bottom elliptical end flange (03). The first support member includes two first support wheels (22) that can be supported on the radially outer side of the upper flange (01), one of the first support wheels (22) being adapted to a first motor (222); The second support member includes two pairs of second support wheels (23) distributed along the axial direction of the middle section cylinder (02). The second support wheels (23) can be supported on the radial outer surface of the middle section cylinder (02), and one of the second support wheels (23) is adapted to a second motor (232). The third support includes two pairs of third support wheels (24) distributed along the axial direction of the bottom elliptical end flange (03), one of which is equipped with a third motor (242).

10. A process for assembling, welding, and grinding a breather valve, implemented using the breather valve assembly, welding, and grinding production line as described in any one of claims 1 to 9, characterized in that, Includes the following steps: Step 1: Assemble and weld the upper flange (01), the middle section cylinder (02), and the bottom elliptical head flange (03) into a breather valve using assembly and welding fixtures; Step 2: Use a hoisting mechanism to hoist the breather valve from the assembly and welding fixture station to the integrated grinding and testing fixture station; Step 3: After welding, place the breather valve in an upright position with the upper flange (01) facing upwards. Hoist the integrated tooling above the breather valve so that the spindle (13), milling cutter mechanism (14), and grinding wheel mechanism (15) fall from top to bottom into the functional structure of the breather valve. Position the spindle (13) coaxially with the breather valve. When the tooling bracket (11) falls onto the upper flange (01), fix the tooling bracket (11) to the upper flange (01). Step 4: The projections of the central axis of the main shaft (13), the central axis of the exhalation valve port (04), and the central axis of the suction valve port (05) on the same horizontal plane are the projection points of the main shaft (13), the exhalation valve port (04), and the suction valve port (05), respectively. The main shaft (13) is translated and adjusted so that the projection point of the main shaft (13) is located at the midpoint of the line connecting the projection points of the exhalation valve port (04) and the suction valve port (05). Step 5: Use a milling cutter mechanism (14) to mill the upper call valve port (04); Step 6: Simultaneously perform grinding of the upper exhalation valve port (04) and milling of the lower suction valve port (05); Step 7: Grinding the lower suction valve port (05) using a grinding wheel mechanism (15); Step 8: Start two surface roughness testers (131) to test the surface roughness of the exhalation valve port (04) and the suction valve port (05).

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