Mechanism and method for precise lossless finishing of welding seam of armature assembly

Abstract

The invention discloses a mechanism and a method for precise lossless finishing of a weld joint of an armature assembly. The device comprises a centering rotary table, a supporting assembly, a jacking pressing head, a follow-up bearing, a grinding head, a clamping head, a centering bearing, a rotating shaft motor, a 2D camera, a rotating motor, a clamping platform, a pressing air cylinder, a fixed rack, a transmission gear, a transmission belt, a mold opening air cylinder, a shifting rod, a positioning pin, a vertical sliding table, a mounting cantilever, an X-axis servo sliding rail, a Y-axis servo sliding rail, a Z-axis servo sliding rail and the like. The centering rotary table and the supporting assembly are used for positioning and supporting the armature assembly. The pressing air cylinder, the vertical sliding table and the jacking pressing head are used for enabling grinding stress to avoid the thin-wall part of the armature assembly. The X-axis, Y-axis and Z-axis servo sliding rail is used for accurately controlling the positions of the 2D camera and the grinding head and controlling the grinding feeding amount. According to the embodiment of the invention, after part of parts of the armature assembly are welded and before the next stage of assembly, the outer contour dimension of part of the assembly is regular, and the effect of subsequent assembly is not affected by welding seams generated by welding is ensured.

Description

Technical Field

[0001] This invention relates to the field of welding seam repair technology for servo valve components, and in particular to a mechanism and method for precision non-destructive repair of weld seams in armature components. Background Technology

[0002] With the increasing demands for control precision and system stability in airborne products, servo valves are facing more stringent requirements regarding the machining precision and assembly quality of their internal key components. As a core component in the electromagnetic drive system of a servo valve, the armature assembly's weld quality directly affects its structural strength, responsiveness, and long-term reliability. Currently, after welding the armature assembly, defects such as micro-splashes, unevenness, and localized build-up are common on the weld surface. These defects not only affect the assembly's dimensions during subsequent assembly but can also lead to stress concentration, magnetic circuit distortion, or mechanical jamming during use, potentially causing performance degradation or failure of the servo valve in severe cases.

[0003] In existing technologies, manual grinding or general machining equipment is usually used to repair welds. However, such methods are difficult to meet the high-precision repair requirements of welds with microstructures and are prone to under- or over-repair, which in turn affects the assembly dimensions and connection reliability of the armature assembly in subsequent processes, reducing the repair success rate. At the same time, the clamping of parts needs to avoid the thin-walled parts from being subjected to radial grinding force during the repair process, which may cause micro-cracks or stress and affect the reliability of long-term operation. Relying on manual clamping is difficult, inefficient, and extremely dependent on the experience of senior technicians, making it difficult to support large-scale production.

[0004] Therefore, how to provide a mechanism and method that can perform high-precision and efficient repair of welds without damaging the armature assembly body and preventing stress on thin-walled parts has become a technical problem that urgently needs to be solved in the current precision servo valve manufacturing field. Summary of the Invention

[0005] This invention provides a mechanism and method for repairing weld seams in an armature assembly, which does not damage the armature assembly body, effectively protects the thin wall of the armature assembly, and is precise and efficient.

[0006] The first aspect of this invention provides a mechanism for precision non-destructive finishing of weld seams in armature assemblies, comprising: a base 1, a fixed frame 2, an X-axis servo slide rail I 3, a clamping platform 4, a vertical slide table 5, a follower bearing 6, a clamping head 7, a Y-axis servo slide rail 10, an X-axis servo slide rail II 11, a Z-axis servo slide rail 12, a mounting cantilever 13, a 2D camera 14, an X-axis servo slide rail III 15, a centering bearing 16, a rotating shaft motor 17, a clamping head 18, a grinding head 19, a clamping cylinder 20, a centering turntable 21, a support assembly 22, and a positioning pin 23; wherein: The clamping platform 4 is mounted on the equipment base 1 via the X-axis servo slide rail I3. A centering turntable 21 is mounted on the clamping platform 4. A positioning pin 23 is provided at the center of the upper surface of the centering turntable 21 for positioning the armature assembly 31. Square positioning grooves are carved on both sides of the positioning pin 23. A support component 22 is provided in the positioning groove. The support component 22 supports the lower end face of the head 33 of the armature assembly 31 and does not contact the thin-walled part 32 of the armature assembly 31. A vertical slide 5 is provided above the fixed frame 2 on the equipment base 1. A clamping cylinder 20 is provided above the vertical slide 5 and a follower bearing 6 is provided below it. The rotating shaft of the follower bearing 6 is fixedly connected to the clamping head 7. The clamping head 7 is used to clamp the top of the armature assembly 31. A Y-axis servo slide rail 10 is provided on the fixed frame 2 located on the outside of the equipment base 1. An X-axis servo slide rail II 11 is provided on the Y-axis servo slide rail 10. A Z-axis servo slide rail 12 is provided on the X-axis servo slide rail II 11. A mounting cantilever 13 is provided on the Z-axis servo slide rail 12. A 2D camera 14 and an X-axis servo slide rail III 15 are provided on the mounting cantilever 13. A centering bearing 16 and a rotating shaft motor 17 are provided on the X-axis servo slide rail III 15. The rotating shaft of the rotating shaft motor 17 is fixedly connected to the rotating shaft of the centering bearing 16, and a clamping head 18 is provided at the end of the rotating shaft. A grinding head 19 is clamped on the clamping head 18.

[0007] Optionally, a transmission gear 24 is provided below the centering turntable 21, and is coaxially and fixedly connected to the transmission gear 24. The transmission gear 24 is connected to the rotating shaft of the rotary motor 26 via the transmission belt 25 and is hidden inside the clamping platform 4.

[0008] Optionally, the clamping platform 4 is also provided with an X-axis servo slide rail IV 27, and an opening mold assembly 28 is provided on the X-axis servo slide rail IV 27. The opening mold assembly 28 is provided with two sets of levers 29 and two opening mold cylinders 30. X-axis servo slide rail Ⅳ27 is used to control the mold opening assembly 28 to approach or move away from the centering turntable 21 along the X-axis; One mold-opening cylinder 30 controls one set of levers 29, and the two sets of levers 29 are arranged in a cross pattern. Two mold-opening cylinders 30 control two sets of levers 29 to move closer or further away along opposite directions of the Y-axis, so that the levers 29 open or close the support assembly 22.

[0009] Optionally, the grinding head 19 is made of diamond.

[0010] Optionally, a high-strength spring is provided inside the support assembly 2. When the lever is not open, the high-strength spring closes the support assembly 22, forming a cylindrical gap that is coaxial with the rotation axis of the centering turntable 21. The diameter of the gap is larger than the thin-walled portion 32 of the armature assembly 31, but smaller than the head 33 of the armature assembly 31. The downward pressure applied by the clamping cylinder 20 to the armature assembly 31 through the vertical slide 5 and the clamping head 7 does not exceed 3-4 times the spring compression force at this time.

[0011] Optionally, the vertical slide 5 is also equipped with a dust collection hood 8 and a dust suction pipe 9, which are connected to an external dust collection device.

[0012] A second aspect of the present invention provides a method for precision non-destructive repair of weld seams in armature assemblies, characterized in that it employs a mechanism as described in any one of the first aspects, comprising the following steps: Control the X-axis servo slide rail I3 to make the clamping platform 4 move along the X-axis until there is no obstruction above the support assembly 22; Open the support assembly 22, position the armature assembly 31 using the positioning pin 23, place it on the centering turntable 21, and close the support assembly 22; Control the X-axis servo slide rail I3 to make the clamping platform 4 move along the X-axis until the support assembly 22 moves to directly below the clamping head 7; The control cylinder 20 applies downward pressure to the vertical slide 5 until the pressing head 7 contacts the armature assembly 31; Control the Y-axis servo slide rail 10 and the Z-axis servo slide rail 12 to place the weld 34 of the armature assembly 31 at the center of the measurement range of the 2D camera 14, and control the X-axis servo slide rail II 11 to place the weld 34 at the camera focus. Control the centering turntable 21 to rotate slowly, control the 2D camera 14 to take pictures, and measure the position of the outer circle of the armature assembly 31 and the size of the weld 34 protruding from the outer circle of the armature assembly 31. Control the Y-axis servo slide rail 10, the X-axis servo slide rail Ⅲ 15 and the Z-axis servo slide rail 12 to make the grinding head 19 extend and approach the highest point of the weld 34 protrusion, and be at the same height on the Z-axis. Control the rotation of the centering turntable 21, and control the rotating shaft motor 17 to rotate the grinding head 19; Control the Y-axis servo slide rail 10 to make the grinding head 19 slowly move toward the armature assembly 31 until the outer circle of the grinding head 19 is tangent to the outer circle of the armature assembly 31; Control the X-axis servo slide rail Ⅲ15 to retract the grinding head 19; Control the Y-axis servo slide rail 10 and the Z-axis servo slide rail 12 to place the weld 34 of the armature assembly 31 at the center of the measurement range of the 2D camera 14, and control the X-axis servo slide rail II 11 to place the weld 34 at the camera focus. Control the centering turntable 21 to rotate slowly, and control the 2D camera 14 to take pictures to confirm that the weld 34 does not protrude from the outer circle of the head 33 of the armature assembly 31. Control the clamping cylinder 20 to release the downward pressure on the vertical slide 5; Control the X-axis servo slide rail I3 to make the clamping platform 4 move along the X-axis until there is no obstruction above the support assembly 22; Open the support assembly 22 and remove the armature assembly 31 from the centering turntable 21.

[0013] Optionally, when the grinding head 19 moves slowly toward the armature assembly 31, the feed rate is 0.01 mm per rotation of the centering turntable 21.

[0014] Optionally, the support assembly 22 is opened, the armature assembly 31 is positioned by the positioning pin 23 and placed on the centering turntable 21, and the support assembly 22 is closed, including: Control the X-axis servo slide rail Ⅳ27 to make the mold opening component 28 move along the X-axis, and the lever 29 approach the support component 22; Control the mold opening cylinder 30 to make the lever 29 open the support assembly 22; Position the armature assembly 31 using the positioning pin 23 and place it on the centering turntable 21; Control the mold opening cylinder 30 to make the lever 29 close the support assembly 22; Control the X-axis servo slide rail Ⅳ27 to make the mold opening component 28 move along the X-axis, and the lever 29 move away from the support component 22.

[0015] Optionally, the method further includes: When the grinding head 19 is working, turn on the external dust collection device.

[0016] This invention provides a mechanism and method for precision non-destructive repair of weld seams in armature assemblies, solving the problems of poor accuracy, low success rate and low efficiency in current armature assembly weld seam repair. It provides a universal mechanism and method for precision non-destructive repair of weld seams in armature assemblies, with high repair effect and consistency. It does not rely on the experience and operation of skilled personnel, ensuring the dimensional and connection reliability of subsequent assembly, and effectively improving the quality and production efficiency of armature assemblies. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a weld seam trimming mechanism according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a clamping platform structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a centering turntable according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of an armature assembly according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the overall structure of a weld seam trimming mechanism according to an embodiment of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the centering turntable and mold opening assembly according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the centering turntable, mold opening assembly, and armature assembly according to an embodiment of the present invention; Figure 8 This is a partial structural schematic diagram of the grinding process of a weld seam repair mechanism according to an embodiment of the present invention; Explanation of reference numerals in the attached figures: 1-Equipment base, 2-Fixed frame, 3-X-axis servo slide rail I, 4-Clamping platform, 5-Vertical slide, 6-Follower bearing, 7-Pressure head, 8-Dust collection hood, 9-Dust suction pipe, 10-Y-axis servo slide rail, 11-X-axis servo slide rail II, 12-Z-axis servo slide rail, 13-Hanging cantilever, 14-2D camera, 15-X-axis servo slide rail III, 16-Centering bearing, 17-Rotating shaft motor, 18-Clamping head, 19-Grinding head, 20-Pressure cylinder, 21-Centering turntable, 22-Support assembly, 23-Positioning pin, 24-Transmission gear, 25-Transmission belt, 26-Rotary motor, 27-X-axis servo slide rail IV, 28-Mold opening assembly, 29-Pulley, 30-Mold opening cylinder, 31-Armature assembly, 32-Thin-walled section, 33-Head, 34-Weld. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The features and illustrative embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific setups and methods set forth below, but covers any improvements, substitutions, and modifications to structures, methods, and devices without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description to avoid unnecessarily obscuring the invention.

[0021] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other, and the various embodiments can be referenced and cited in each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] like Figure 1-8 As shown, this invention provides a mechanism for precision non-destructive repair of weld seams in armature assemblies, comprising: a base 1, a fixed frame 2, an X-axis servo slide rail I 3, a clamping platform 4, a vertical slide table 5, a follower bearing 6, a clamping head 7, a dust collection hood 8, a dust extraction pipe 9, a Y-axis servo slide rail 10, an X-axis servo slide rail II 11, a Z-axis servo slide rail 12, a mounting cantilever 13, a 2D camera 14, an X-axis servo slide rail III 15, a centering bearing 16, a rotating shaft motor 17, a clamping head 18, a grinding head 19, a clamping cylinder 20, a centering turntable 21, a support assembly 22, a positioning pin 23, a transmission gear 24, a transmission belt 25, a rotary motor 26, an X-axis servo slide rail IV 27, a mold opening assembly 28, a lever 29, a mold opening cylinder 30, and an armature assembly 31, wherein: A fixed frame 2 is provided on the equipment base 1.

[0023] The fixed frame 2 is equipped with a vertical slide 5, which can slide along the fixed frame 2 in the Z-axis direction. The vertical slide 5 is equipped with a follower bearing 6, and the rotating shaft of the follower bearing 6 is fixedly connected to the clamping head 7. The vertical slide 5 is also equipped with a dust collection hood 8 and a dust suction pipe 9, which are connected to an external dust collection device.

[0024] The fixed frame 2 is also equipped with a Y-axis servo slide rail 10, and an X-axis servo slide rail II 11 is mounted on the Y-axis servo slide rail 10. The X-axis servo slide rail II 11 can move along the Y-axis on the Y-axis servo slide rail 10. A Z-axis servo slide rail 12 is mounted on the X-axis servo slide rail II 11, and the Z-axis servo slide rail 12 can move along the X-axis on the X-axis servo slide rail II 11. A mounting cantilever 13 is mounted on the Z-axis servo slide rail 12, and the mounting cantilever 13 can move along the Z-axis on the Z-axis servo slide rail 12.

[0025] A 2D camera 14 and an X-axis servo slide rail III 15 are mounted on the cantilever arm 13, both fixedly connected to the cantilever arm 13. A centering bearing 16 and a rotating shaft motor 17 are mounted on the X-axis servo slide rail III 15, allowing them to move along the X-axis. The rotating shaft of the rotating shaft motor 17 is fixedly connected to the rotating shaft of the centering bearing 16, and a clamping head 18 is provided at the end of the rotating shaft, on which a grinding head 19 can be clamped. The fixed frame 2 is also equipped with a clamping cylinder 20, which is fixedly connected to the fixed frame 2.

[0026] The equipment base 1 is also provided with an X-axis servo slide rail I3, and a clamping platform 4 is provided on the X-axis servo slide rail I3. The clamping platform 4 can move along the X-axis on the X-axis servo slide rail I3.

[0027] The clamping platform 4 is equipped with a centering turntable 21. A positioning pin 23 is located at the center of the upper surface of the centering turntable 21, and square positioning grooves are carved on both sides. A support component 22 is installed in the positioning groove. The centering turntable 21 is fixedly connected to the transmission gear 24. The transmission gear 24 is connected to the rotating shaft of the rotary motor 26 through the transmission belt 25 and is hidden inside the clamping platform 4.

[0028] The clamping platform 4 is also equipped with an X-axis servo slide rail IV 27, on which a mold opening assembly 28 is mounted. The mold opening assembly 28 can move along the X-axis on the X-axis servo slide rail IV 27. The mold opening assembly 28 is equipped with a lever 29 and a mold opening cylinder 30.

[0029] It is understandable that the X-axis servo slide rail Ⅳ27 is used to control the mold opening assembly 28 to approach or move away from the centering turntable 21 along the X-axis; One mold-opening cylinder 30 controls one set of levers 29, and the two sets of levers 29 are arranged in a cross pattern. Two mold-opening cylinders 30 control two sets of levers 29 to move closer or further away along opposite directions of the Y-axis, so that the levers 29 open or close the support assembly 22.

[0030] Optionally, a high-strength spring is also provided inside the support assembly 22.

[0031] Optionally, when the high-strength spring closes the support assembly 22, the support assembly 22 forms a cylindrical gap, which is coaxial with the rotation axis of the centering turntable 21. The diameter of the gap is slightly larger than the thin-walled portion 32 of the armature assembly 31, but smaller than the head 33 of the armature assembly 31.

[0032] Optionally, when the high-strength spring closes the support assembly 22, the downward pressure applied by the clamping cylinder 20 to the armature assembly 31 through the vertical slide 5 and the clamping head 7 should not exceed 3-4 times the spring compression force at this time.

[0033] Optionally, multiple centering turntables 21 can be set up according to the structure and size of different armature assemblies 31, and different positioning pins 23 and support assemblies 22 can be set up. The multiple centering turntables 21 are driven to rotate simultaneously by a rotary motor 26 through a transmission belt 25.

[0034] Optionally, the mold opening assembly 28 can move along the X-axis on the X-axis servo slide rail Ⅳ27, causing the lever 29 to approach or move away from the support assembly 22.

[0035] Optionally, the grinding head 19 is made of diamond.

[0036] Optionally, a dust collection hood 8 is provided above the centering turntable 21, which is connected to an external negative pressure device through a dust suction pipe 9.

[0037] Figure 1 This is a schematic diagram of the overall structure of a weld seam trimming mechanism according to an embodiment of the present invention.

[0038] like Figure 1 As shown, the weld seam finishing mechanism can include: a base 1, a fixed frame 2, an X-axis servo slide rail I3, a clamping platform 4, a vertical slide 5, a follower bearing 6, a clamping head 7, a dust collection hood 8, a dust extraction pipe 9, a Y-axis servo slide rail 10, an X-axis servo slide rail II 11, a Z-axis servo slide rail 12, a mounting cantilever 13, a 2D camera 14, an X-axis servo slide rail III 15, a centering bearing 16, a rotating shaft motor 17, a clamping head 18, a grinding head 19, and a clamping cylinder 20. The fixed frame 2 and the X-axis servo slide rail I3 are fixedly connected to the base 1 by bolts. The fixed frame 2 is equipped with the vertical slide 5, the Y-axis servo slide rail 10, and the clamping cylinder 20. The vertical slide 5 is equipped with the follower bearing 6, the clamping head 7, the dust collection hood 8, and the dust extraction pipe 9, which are used to transmit the pressure of the clamping cylinder 20 and remove debris generated during finishing. Multiple servo slide rails are used to control the 2D camera 14 and the rotating shaft motor 17 mounted on the cantilever 13, so as to realize the positioning and trimming of the weld.

[0039] Figure 2 This is a schematic diagram of the clamping platform according to an embodiment of the present invention.

[0040] like Figure 2 As shown, the clamping platform may include: a centering turntable 21, a support assembly 22, a transmission gear 24, a transmission belt 25, a rotary motor 26, an X-axis servo slide rail IV 27, a mold opening assembly 28, a lever 29, and a mold opening cylinder 30. The centering turntable 21 is used to mount the support assembly 22 and the positioning pin 23, and the transmission gear 24 is located below it. The clamping platform 4 has a rotary motor 26 inside, which drives multiple centering turntables 21 to rotate via the transmission belt 25. The X-axis servo slide rail IV 27 controls the mold opening assembly 28 to approach or move away from the centering turntable 21, and the mold opening cylinder 30 controls the lever 29 to open or close the support assembly 22.

[0041] Figure 3 This is a schematic diagram of the structure of a centering turntable according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the armature assembly according to an embodiment of the present invention.

[0042] like Figure 3 and Figure 4 As shown, the centering turntable may include: a support assembly 22, a positioning pin 23, and a transmission gear 24, wherein: the support assembly 22 is used to provide lower support for the armature assembly 31, ensuring that the thin-walled portion 32 is never subjected to force during the trimming process. In some embodiments, the position and number of XYZ axis servo guide rails are not limited to... Figure 1 As shown, but it is necessary to ensure independent control of the 2D camera 14 and the rotating shaft motor 17 in the XYZ three-axis spatial position.

[0043] In some embodiments, the pressing platform 4 may be provided with multiple sets of centering turntables 21 according to the structure and size of the armature assembly 31, and each centering turntable 21 may be provided with different positioning pins 23 and support components 22.

[0044] In some embodiments, the armature assembly 31 and the insertion and support protection are not limited to the form of support assembly 22, mold opening assembly 28 and clamping head 7, but it is necessary to ensure that the thin-walled portion 32 of the armature assembly 31 is in a stress-free state during the grinding and finishing of the weld 34, and the head 33 of the armature assembly is pressed by support assembly 22 and clamping head 7.

[0045] The present invention also provides a method for precision non-destructive finishing of weld seams in armature assemblies, which can be used in the aforementioned weld seam finishing mechanisms. The method may include the following steps: S101, control the X-axis servo slide rail I3 to make the clamping platform 4 move along the X-axis until there is no obstruction above the support assembly 22; S102, control the X-axis servo slide rail Ⅳ27 to make the mold opening component 28 move along the X-axis, and the lever 29 approach the support component 22; S103, control the mold opening cylinder 30 to make the lever 29 open the support assembly 22; S104, Position the armature assembly 31 using the positioning pin 23 and place it on the centering turntable 21; S105, control the mold opening cylinder 30 to make the lever 29 close the support assembly 22; S106, control the X-axis servo slide rail Ⅳ27 to make the mold opening component 28 move along the X-axis, and the lever 29 move away from the support component 22; S107, control the X-axis servo slide rail I3 to make the clamping platform 4 move along the X-axis until the support component 22 moves to directly below the clamping head 7; S108, control the clamping cylinder 20 to apply downward pressure to the vertical slide 5 until the clamping head 7 contacts the armature assembly 31; S109, control the Y-axis servo slide rail 10 and the Z-axis servo slide rail 12 to place the weld 34 of the armature assembly 31 at the center of the measurement range of the 2D camera 14, and control the X-axis servo slide rail II 11 to place the weld 34 at the camera focus. S110, control the rotary motor 26 to make the centering turntable 21 rotate slowly, control the 2D camera 14 to take pictures, and measure the position of the outer circle of the armature assembly 31 and the size of the weld 34 protruding from the outer circle of the armature assembly 31; S111 controls the Y-axis servo slide rail 10, the X-axis servo slide rail Ⅲ 15 and the Z-axis servo slide rail 12 to make the grinding head 19 extend and approach the highest point of the weld 34 protrusion, and be at the same height on the Z-axis. S112, turn on the external negative pressure device; S113, control the rotary motor 26 to rotate the centering turntable 21, and control the rotating shaft motor 17 to rotate the grinding head 19; S114, control the Y-axis servo slide rail 10 to make the grinding head 19 slowly move toward the armature assembly 31 until the outer circle of the grinding head 19 is tangent to the outer circle of the armature assembly 31; S115 controls the X-axis servo slide rail Ⅲ15 to retract the grinding head 19 and shut off the external negative pressure device.

[0046] S116, control the Y-axis servo slide rail 10 and the Z-axis servo slide rail 12 to place the weld 34 of the armature assembly 31 at the center of the measurement range of the 2D camera 14, and control the X-axis servo slide rail II 11 to place the weld 34 at the camera focus. S117, control the rotary motor 26 to make the centering turntable 21 rotate slowly, control the 2D camera 14 to take pictures, and confirm that the weld 34 does not protrude from the outer circle of the head 33 of the armature assembly 31. S118, control the clamping cylinder 20 to release the downward pressure on the vertical slide 5; S119, control the X-axis servo slide rail I3 to make the clamping platform 4 move along the X-axis until there is no obstruction above the support assembly 22; S120, control the X-axis servo slide rail Ⅳ27 to make the mold opening component 28 move along the X-axis, and the lever 29 approaches the support component 22; S121, control the mold opening cylinder 30 to make the lever 29 open the support assembly 22; S122, remove the armature assembly 31 from the centering turntable 21.

[0047] The above-described embodiments of the invention can accurately identify the location and size of weld protrusions during the weld finishing process of the armature assembly, effectively protecting the thin-walled portion of the armature assembly. By controlling the grinding head to perform lateral rotation grinding, the grinding dimensions can be precisely controlled. Therefore, it can be ensured that the base material of the armature assembly will not be over-ground during the finishing process, thereby ensuring the quality and reliability of subsequent assembly processes.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should be covered within the protection scope of the present invention.

Claims

1. A mechanism for precision non-destructive finishing of a weld seam of an armature assembly, characterized by, The device base (1), the fixed rack (2), the X-axis servo slide rail I (3), the clamping platform (4), the vertical slide table (5), the follow-up bearing (6), the top pressing head (7), the Y-axis servo slide rail (10), the X-axis servo slide rail II (11), the Z-axis servo slide rail (12), the mounting cantilever (13), the 2D camera (14), the X-axis servo slide rail III (15), the centering bearing (16), the rotating shaft motor (17), the clamping head (18), the polishing head (19), the pressing cylinder (20), the centering turntable (21), the support assembly (22), the positioning pin (23); wherein: The clamping platform (4) is arranged on the device base (1) through the X-axis servo slide rail I (3), the clamping platform (4) is provided with the centering turntable (21), the centering turntable (21) is provided with the positioning pin (23) at the center of the upper surface, which is used for positioning the armature assembly (31), the positioning pin (23) is provided with a square positioning groove on both sides, the support assembly (22) is arranged in the positioning groove, the support assembly (22) supports the lower end surface of the head (33) of the armature assembly (31), and the thin wall part (32) of the armature assembly (31) is not in contact with the support assembly (22); The vertical slide table (5) is arranged above the fixed rack (2) arranged on the device base (1), the pressing cylinder (20) is arranged above the vertical slide table (5), and the follow-up bearing (6) is arranged below the vertical slide table (5), the rotating shaft of the follow-up bearing (6) is fixedly connected with the top pressing head (7), and the top pressing head (7) is used for pressing the top of the armature assembly (31); The fixed rack (2) arranged outside the device base (1) is provided with the Y-axis servo slide rail (10), the X-axis servo slide rail II (11) is arranged on the Y-axis servo slide rail (10), the Z-axis servo slide rail (12) is arranged on the X-axis servo slide rail II (11), the mounting cantilever (13) is arranged on the Z-axis servo slide rail (12), the 2D camera (14) and the X-axis servo slide rail III (15) are arranged on the mounting cantilever (13), the centering bearing (16) and the rotating shaft motor (17) are arranged on the X-axis servo slide rail III (15), the rotating shaft of the rotating shaft motor (17) is fixedly connected with the rotating shaft of the centering bearing (16), and the clamping head (18) is arranged at the end of the rotating shaft, and the clamping head (18) clamps the polishing head (19). The centering turntable (21) is provided with a transmission gear (24) below; 2. The mechanism for precision non-destructive finishing of the weld joint of the armature assembly as claimed in claim 1 wherein, The transmission gear (24) is connected with the rotating shaft of the rotating motor (26) through the transmission belt (25) and is hidden in the clamping platform (4). The clamping platform (4) is further provided with the X-axis servo slide rail IV (27), the X-axis servo slide rail IV (27) is provided with the mold opening assembly (28), and the mold opening assembly (28) is provided with two groups of lever rods (29) and two mold opening cylinders (30); 3. The mechanism for precision non-destructive finishing of the weld joint of the armature assembly as claimed in claim 1 wherein, The X-axis servo slide rail IV (27) is used for controlling the mold opening assembly (28) to approach or move away from the centering turntable (21) along the X-axis; One mold opening cylinder (30) controls one group of lever rods (29), and the two groups of lever rods (29) are arranged in cross; ​ Two opening mold cylinders (30) control two groups of the lever (29) close or far away along the Y axis in the opposite direction, so that the lever (29) opens or closes the support assembly (22).

4. The mechanism for precise non-destructive finishing of the weld joint of the armature assembly as claimed in claim 1 wherein, The polishing head (19) is made of diamond material.

5. The mechanism for precise non-destructive finishing of the weld joint of the armature assembly as claimed in claim 1 wherein, The support assembly (2) is internally provided with a high-strength spring, which makes the support assembly (22) closed when the lever is not opened, and the support assembly (22) forms a cylindrical gap coaxial with the rotating shaft of the centering turntable (21). The diameter of the gap is larger than the thin-walled part (32) of the armature assembly (31), but smaller than the head (33) of the armature assembly (31). The downward pressure of the compression cylinder (20) on the armature assembly (31) through the vertical sliding table (5) and the top compression head (7) is not more than 3-4 times the spring compression force at this time.

6. The mechanism for precise non-destructive finishing of the weld seam of an armature assembly according to claim 1, characterized in that The vertical sliding table (5) is also provided with a dust collecting cover (8) and a dust collecting pipeline (9) connected with an external dust collecting device.

7. A method for precision non-destructive repair of a weld seam of an armature assembly, characterized in that, The mechanism according to any one of claims 1-6, characterized in that it comprises the following steps: Control the X-axis servo sliding rail I (3) to make the clamping platform (4) move along the X-axis until there is no obstruction above the support assembly (22); Open the support assembly (22), position the armature assembly (31) on the centering turntable (21) through the positioning pin (23), and close the support assembly (22); Control the X-axis servo sliding rail I (3) to make the clamping platform (4) move along the X-axis until the support assembly (22) moves directly below the top compression head (7); Control the compression cylinder (20) to apply downward pressure to the vertical sliding table (5) until the top compression head (7) contacts the armature assembly (31); Control the Y-axis servo sliding rail (10) and the Z-axis servo sliding rail (12) to make the weld (34) of the armature assembly (31) be in the center of the measurement range of the 2D camera (14), and control the X-axis servo sliding rail II (11) to make the weld (34) be in the camera focus; Control the centering turntable (21) to rotate slowly, and control the 2D camera (14) to take pictures to measure the position of the outer circle of the armature assembly (31) and the size of the weld (34) protruding from the outer circle of the armature assembly (31); Control the Y-axis servo sliding rail (10), the X-axis servo sliding rail III (15) and the Z-axis servo sliding rail (12) to make the polishing head (19) extend and approach the highest point of the weld (34) protruding, and be at the same height on the Z-axis; Control the centering turntable (21) to rotate, and control the rotating shaft motor (17) to make the polishing head (19) rotate; Control the Y-axis servo sliding rail (10) to make the polishing head (19) move slowly towards the armature assembly (31) until the outer circle of the polishing head (19) is tangent to the outer circle of the armature assembly (31); Control the X-axis servo sliding rail III (15) to make the polishing head (19) retract; Control the Y-axis servo sliding rail (10) and the Z-axis servo sliding rail (12) to make the weld (34) of the armature assembly (31) be in the center of the measurement range of the 2D camera (14), and control the X-axis servo sliding rail II (11) to make the weld (34) be in the camera focus; Control the slow rotation of the centering turntable (21), control the 2D camera (14) to take pictures, and confirm that the weld (34) does not protrude from the outer circle of the armature assembly (31) head (33); Control the release of the pressing cylinder (20) to the vertical sliding table (5) under the pressure; Control the X-axis servo sliding rail I (3) to make the clamping platform (4) move along the X-axis until there is no obstruction above the support assembly (22); Open the support assembly (22) and take the armature assembly (31) off the centering turntable (21).

8. The method for precision non-destructive finishing of armature assembly welds of claim 7, wherein, When the polishing head (19) moves slowly towards the armature assembly (31), the feed amount is 0.01mm per 2 rotations of the centering turntable (21).

9. The method for precision non-destructive finishing of armature assembly welds of claim 7, wherein, Open the support assembly (22) and position the armature assembly (31) on the centering turntable (21) through the positioning pin (23), and close the support assembly (22), including: Control the X-axis servo sliding rail IV (27) to make the mold opening assembly (28) move along the X-axis, and the lever (29) approaches the support assembly (22); Control the mold opening cylinder (30) to make the lever (29) open the support assembly (22); Position the armature assembly (31) on the centering turntable (21) through the positioning pin (23); Control the mold opening cylinder (30) to make the lever (29) close the support assembly (22); Control the X-axis servo sliding rail IV (27) to make the mold opening assembly (28) move along the X-axis, and the lever (29) moves away from the support assembly (22).

10. The method for precision non-destructive finishing of armature assembly welds of claim 7, wherein, The method further comprises: When the polishing head (19) is working, open the external dust collection device.

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