Device and method for aligning end face special-shaped parts

Abstract

This invention relates to the field of mechanical manufacturing technology, and in particular to a reference alignment device and method for irregularly shaped welded parts. The alignment device includes: a first adapter fixedly connected to one end of the irregularly shaped welded part; a first adjustment unit fixedly connected to one end of the irregularly shaped welded part and the first adapter; a second adapter fixedly connected to the other end of the irregularly shaped welded part; and a second adjustment unit fixedly connected to the other end of the irregularly shaped welded part and the second adapter. The first adapter and the first adjustment unit are provided with an adjustable spacing connection structure, allowing the radial rotation angle of the first adapter to be adjusted. This invention improves upon the difficulty of fixing irregularly shaped welded parts in the prior art; greatly improves the alignment accuracy of the reference point; and significantly improves efficiency and reliability compared to manual rotation alignment in the prior art; and greatly mitigates the adverse effects of welding deformation.

Description

Technical Field

[0001] This invention relates to the field of metal material manufacturing technology, and in particular to a reference alignment device and alignment method for irregularly shaped welded parts. Background Technology

[0002] Large welded cabin-like parts (length ≥ 3500mm, enclosing cylinder diameter ≥ 800mm) are often assembled from multiple parts. Welding deformation causes overall datum misalignment, resulting in deviations between the part's shape and its theoretical shape. This means the original datum no longer meets requirements, necessitating secondary datum calibration before further processing. Each end face has at least two datum points, with each pair corresponding to the others. Secondary calibration requires aligning at least four datum points from both end faces. Furthermore, due to the part's large size and weight, movement and rotation on tooling are difficult. Traditional methods require multiple jacks and cranes for alignment, which has the following drawbacks: low alignment accuracy (typically above 0.05mm); long alignment time (typically over 7 hours); and low alignment efficiency, heavily influenced by human factors. Therefore, the market urgently needs a device and method for rapid and accurate secondary datum alignment of irregularly shaped welded parts. Summary of the Invention

[0003] Based on the above analysis, the present invention aims to provide a reference alignment device and alignment method for irregularly shaped welded parts on the end face, so as to solve at least one of the problems in the prior art, such as low alignment accuracy, long alignment time, low alignment efficiency, and great influence of human factors.

[0004] The objective of this invention is mainly achieved through the following technical solutions:

[0005] This invention provides a reference alignment device for an irregularly shaped welded part, comprising: a first adapter fixedly connected to one end of the irregularly shaped welded part; a first adjustment unit fixedly connected to one end of the irregularly shaped welded part and the first adapter; a second adapter fixedly connected to the other end of the irregularly shaped welded part; and a second adjustment unit fixedly connected to the other end of the irregularly shaped welded part and the second adapter; the first adapter and the first adjustment unit are provided with an adjustable spacing connection structure;

[0006] The first adapter is used to fix and connect to the irregular end face of one end of the irregular welded part and control the radial rotation angle of the irregular end face. The first adjustment unit is used to control the height of the irregular end face connected to the first adapter.

[0007] The second adapter is used to fix the irregular end face of the other end of the irregular welded part, and the second adjustment unit is used to control the height adjustment of the irregular end face connected to match the first adapter and the rotation angle of the irregular end face connected to the second adapter.

[0008] Preferably, the first adapter tire is provided with a first connecting structure at the connection point with the first adjusting unit; the first adjusting unit is provided with a second connecting structure that matches and connects with the first connecting structure.

[0009] Preferably, the first adapter tire and the first adjustment unit have two connection points, and each connection point is matched with a first connection structure and a second connection structure.

[0010] Preferably, the second connecting structure is provided with a second threaded through hole; a first screw with a matching pitch passes through the second threaded through hole; after passing through the second threaded through hole, the first screw abuts against the first connecting structure and supports the first connecting structure from the bottom.

[0011] Preferably, the first connecting structure is provided with a third through hole; the second connecting structure is provided with a fourth through hole coaxially arranged with the third through hole; a third screw with a diameter matching the inner diameter of the third through hole and the fourth through hole passes through the third through hole and the fourth through hole, so as to realize the fixed connection between the first connecting structure and the second connecting structure.

[0012] Preferably, the first adapter tire includes a first fixed frame and a first conformal fixture; the first fixed frame and the first conformal fixture are fixedly connected to the first connecting structure; the first adjusting unit has a first annular inner wall that matches the curvature of the first fixed frame between the second connecting structures on both sides of the first adapter tire; one side of the first conformal fixture abuts against the first annular inner wall or the inner wall of the first fixed frame; the other side of the first conformal fixture and the inner wall of the first fixed frame abut against the outer wall of the end face irregular welded part.

[0013] Preferably, the first adjustment unit further comprises: a first bracket fixedly connected to one side of the second connection structure, a base plate fixedly connected to the other side of the first bracket, a first base located below the base plate, and a lifting device with its fixed end fixed to the first base plate and its movable end fixedly connected to the base plate.

[0014] Preferably, the second adjustment unit includes: a fourth connecting structure fixedly connected to the second adapter tire, a second bracket fixedly connected to one side of the fourth connecting structure, and a rotating structure fixedly connected to the other side of the second bracket.

[0015] Preferably, the first adjustment unit is configured as two parts that can slide horizontally relative to each other, wherein the part that is fixedly connected to the first adapter tire can move horizontally relative to the other part.

[0016] This invention provides a reference alignment method for irregularly shaped welded parts with end faces, using the aforementioned reference alignment device for irregularly shaped welded parts with end faces.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] (1) The present invention provides a first fixed frame, a first conformal fixture and a first annular inner wall with a curvature matching the first fixed frame in the first adapter. By adjusting the first conformal fixture, the circular standard fixture can fix and position any irregular end face; thus improving the problem of difficulty in fixing welded parts with irregular end faces in the prior art.

[0019] (2) By setting a second threaded through hole in the second connection structure and a first screw with a pitch matching the second threaded through hole, the present invention can achieve precise adjustment of the radial rotation angle of the first adapter tire and precise adjustment of the position of the reference point in the end face, which greatly improves the accuracy of the reference point alignment. At the same time, compared with the manual rotation alignment in the prior art, it greatly improves efficiency and reliability.

[0020] (3) By setting positioning pins at the reference points, the horizontal positioning of the reference points is transformed into the height positioning and horizontality comparison of the positioning pins; the precise positioning of the reference points within the end face is achieved with the help of a dial indicator, which greatly improves the accuracy, efficiency and reliability of the reference points.

[0021] (4) This invention, by setting up a lifting device connecting the first base and the base plate, a rotating structure fixedly connected to the other side of the second bracket, and a second fixed structure for controlling the rotation angle of the rotating structure, achieves that when the height of the connecting end face of the first adapter tire is adjusted, the connecting end face of the second adapter tire rotates accordingly, so that the reference points of the first and second adapter tires are parallel to each other, thereby achieving radial reference alignment of the irregularly shaped welded parts. Compared with the prior art, this invention can accurately adjust the height of the connecting end face of the first adapter tire, achieve radial reference alignment of the irregularly shaped welded parts, greatly improve the reference transfer accuracy of the reference point, and greatly mitigate the adverse effects of welding deformation.

[0022] (5) By setting a base that is slidably connected to the bottom of the first base, the first base can be moved parallel to the plane connecting the first base and the base by rotating the adjusting bolt, so that the included angle between the end face and the side face changes slightly, and the line connecting the reference point of the two end faces and the corresponding reference point is close to parallel to the axial direction of the welded part; thereby realizing the axial reference alignment of the irregular welded part on the end face; compared with the prior art, the reference transfer accuracy of the reference point is greatly improved, and the adverse effects caused by welding deformation are greatly reduced.

[0023] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained through the embodiments described and the accompanying drawings, which are particularly pointed out. Attached Figure Description

[0024] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0025] Figure 1 This is a schematic diagram showing the fixed connection between a reference alignment device for irregularly shaped welded parts and an irregularly shaped welded part on the end face in one embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the first adapter structure in a reference alignment device for irregularly shaped welded parts on the end face according to one embodiment of the present invention.

[0027] Figure 3 This is a cross-sectional view of the connection between the first conforming jig and the first fixed frame in a reference alignment device for irregularly shaped welded parts on the end face according to one embodiment of the present invention.

[0028] Figure 4 This is a schematic diagram of the first adjustment unit in a reference alignment device for irregularly shaped welded parts on the end face according to one embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the connection between the first adjustment unit and the first adapter in a reference alignment device for irregularly shaped welded parts on the end face according to one embodiment of the present invention.

[0030] Figure 6 This is a cross-sectional view of the connection between the first adjusting unit and the first adapter in a reference alignment device for irregularly shaped welded parts according to one embodiment of the present invention.

[0031] Figure 7 This is a schematic diagram of the second adjustment unit and the second adapter structure in a reference alignment device for irregularly shaped welded parts on the end face according to one embodiment of the present invention.

[0032] Figure 8 This is a schematic diagram showing the connection between the second adjustment unit and the second adapter in a reference alignment device for a non-standard welded part with a regular end face, according to one embodiment of the present invention.

[0033] Figure 9 This is a schematic diagram showing the connection between the second adjustment unit and the second adapter in a reference alignment device for irregular end-face welded parts according to an embodiment of the present invention.

[0034] Figure 10 This is a schematic diagram of the structure of the first adjustment unit and the first adapter tire fixing end face in a reference alignment device for irregularly shaped welded parts according to one embodiment of the present invention.

[0035] Figure 11 for Figure 4 Sectional view of the middle BB plane;

[0036] Figure 12 for Figure 7 Sectional view of the C-plane;

[0037] Figure 13 This is a flowchart of a reference alignment method for irregularly shaped welded parts on the end face, according to one embodiment of the present invention.

[0038] Figure label:

[0039] First adapter 1; First adjusting unit 2; Second adapter 3; Second adjusting unit 4; End face irregular welding part 5; Positioning pin 7; First connecting structure 101; Third through hole 1011; First fixing frame 102; Through hole 1021; First conformal fixture 103; Second threaded hole 1031; Second connecting structure 201; Second threaded through hole 2011; Fourth through hole 2012; First bracket 202; Base plate 203; First base 204; Lifting Device 205; First fixing structure 206; Base 207; Protrusion 2071; Fifth threaded through hole 2072; Adjusting bolt 208; First annular inner wall 209; Third connecting structure 301; Second fixing frame 302; Second conformal jig 303; Fourth connecting structure 401; Second bracket 402; Second fixing structure 403; Second annular inner wall 404; Rotating structure 405; First screw 601; Second screw 602; Third screw 603. Detailed Implementation

[0040] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0041] To clearly illustrate the technical solution of the present invention, the following technical terms are further defined:

[0042] Alignment of datum points for irregularly shaped welded parts: There are four or more datum points distributed on both ends of the irregularly shaped welded parts, and each end face has at least two datum points. Each datum point has a corresponding datum point on the other end face. Ideally, the lines connecting each datum point to its corresponding datum point on the other end face are parallel. However, due to welding deformation, the lines connecting multiple datum points to their corresponding datum points are not parallel, which is not conducive to the transfer of datum points and further processing. Therefore, it is necessary to adjust the angle between the two ends of the irregularly shaped welded parts and the side of the irregularly shaped welded parts to perform axial datum alignment of the welded parts.

[0043] Meanwhile, the irregularly shaped welded parts on the end face need to be further processed on the machine tool, so the reference points of the front and rear end faces need to be coplanar and the plane needs to be horizontal. Therefore, it is necessary to adjust the radial rotation angle and end face height of the two end faces to make the plane where all reference points are located horizontal, thereby completing the radial reference alignment of the irregularly shaped welded parts on the end face.

[0044] First adapter tire connection end face: The end face of the two ends of the irregularly shaped welded part that is connected to the first adapter tire.

[0045] Second adapter tire connection end face: The end face of the two ends of the irregularly shaped welded part that connects with the second adapter tire.

[0046] On one hand, this invention discloses a reference alignment device for irregularly shaped welded parts, such as... Figure 1 As shown, the alignment device includes: a first adapter 1 fixedly connected to one end of the irregularly shaped welded part on the end face; a first adjustment unit 2 fixedly connected to one end of the irregularly shaped welded part on the end face and the first adapter 1; a second adapter 3 fixedly connected to the other end of the irregularly shaped welded part on the end face; and a second adjustment unit 4 fixedly connected to the other end of the irregularly shaped welded part on the end face and the second adapter 3. The first adapter 1 and the first adjustment unit 2 are provided with a connection structure with adjustable spacing, so that the radial rotation angle of the first adapter 1 can be adjusted.

[0047] The first adapter 1 is used to fix and connect to the irregular end face of one end of the irregular welded part and control the radial rotation angle of the irregular end face. The first adjustment unit 2 is used to control the height of the irregular end face connected to the first adapter 1.

[0048] The second adapter 3 is used to fixably connect to the irregular end face of the other end of the irregularly shaped welded part. The second adjustment unit 4 is used to control the height adjustment of the irregularly shaped end face connected to match the first adapter 1, and the rotation angle of the irregularly shaped end face connected to the second adapter 3. Specifically, by adjusting the radial rotation angle of the first adapter 1, the position of the reference point of the end face of the welded part fixedly connected to the first adapter 1 is adjusted so that the line connecting all reference points is horizontal, thereby achieving the reference alignment of the end face and fixing the radial rotation angle of the first adapter 1. The position corresponding to this angle is used as the reference position of the rotation angle of the end face.

[0049] Specifically, in order to achieve adjustable radial rotation angle of the first adapter tire 1, such as... Figure 2 As shown, a first connecting structure 101 is provided at the connection between the first adapter tire 1 and the first adjusting unit 2; as Figure 4 As shown, the first adjustment unit 2 is provided with a second connection structure 201 that matches and connects with the first connection structure 101; the connection distance between the first connection structure 101 and the second connection structure 201 is adjustable, which can realize the radial rotation angle adjustment of the first adapter tire 1.

[0050] Preferred, such as Figure 2 , Figure 4 As shown, the first adapter tire 1 and the first adjustment unit 2 have two connection points, each of which is matched with a first connection structure 101 and a second connection structure 201; the connection spacing of the first connection structure 101 and the second connection structure 201 on the same side is adjusted (increased or decreased), while the connection spacing of the first connection structure 101 and the second connection structure 201 on the other side is adjusted in the opposite direction, thereby realizing the radial rotation of the first adapter tire 1.

[0051] Specifically, such as Figure 6 As shown, the second connecting structure 201 is provided with a second threaded through hole 2011; a first screw 601 matching the pitch of the second threaded through hole 2011 is selected, passes through the second threaded through hole 2011, and abuts against the first connecting structure 101 and supports the first connecting structure 101 from the bottom. In implementation, both sides of the second connecting structure 201 are provided with second threaded through holes 2011. Rotating the first screw 601 on one side adjusts the connection distance between the first connecting structure 101 and the second connecting structure 201 on that side; at the same time, rotating the first screw 601 on the other side in the opposite direction adjusts the connection distance between the first connecting structure 101 and the second connecting structure 201 on the other side in the opposite direction, thereby realizing the radial rotation of the first adapter tire 1.

[0052] Compared with the prior art, the present invention achieves precise adjustment of the radial rotation angle of the first adapter tire and precise adjustment of the position of the reference point in the end face by setting a second threaded through hole in the second connection structure and a first screw that matches the pitch of the second threaded through hole. This greatly improves the accuracy of the reference point alignment and significantly improves efficiency and reliability compared with the manual rotation alignment in the prior art.

[0053] Specifically, in order to achieve a fixed connection between the first adapter 1 and the irregularly shaped end face of the welding part, such as... Figure 2 As shown, the inner diameter of the first adapter tire 1 should be greater than the maximum outer diameter of the irregular end face; and the first adapter tire 1 includes a first fixed frame 102 and a first conforming fixture 103, the first fixed frame 102 and the first conforming fixture 103 being fixedly connected to the first connecting structure 101; as Figure 4As shown, the first adjustment unit 2 has a first annular inner wall 209 that matches the curvature of the first fixed frame 102 between the second connection structures 201 on both sides of the first adapter 1. One side of the first conformal fixture 103 fits and abuts against the first annular inner wall 209 or the inner wall of the first fixed frame 102. The other side of the first conformal fixture 103 and the inner wall of the first fixed frame 102 abut against the outer wall of the end face irregular welded part 5 to achieve the fixation of the end face irregular welded part.

[0054] Specifically, such as Figure 3 As shown, the first fixed frame 102 is provided with a through hole 1021 on the side where it is connected to the first conforming jig 103; the first conforming jig 103 is provided with a second threaded hole 1031 on the same side; a second screw 602 matching the pitch of the second threaded hole 1031 is selected, passes through the through hole 1021 and is fixedly connected to the second threaded hole 1031, thereby realizing the fixed connection between the fixed frame 102 and the first conforming jig 103.

[0055] Compared with the prior art, the present invention improves the problem of fixing irregularly shaped end faces by setting a first fixed frame, a first conforming fixture, and a first annular inner wall with a curvature matching the first fixed frame in the first adapter tire, and by adjusting the first conforming fixture, the circular standard fixture can fix and position any irregularly shaped end face;

[0056] Specifically, to achieve a fixed connection between the first adapter tire 1 and the first adjustment unit 2, a fixed connection spacing between the first connecting structure 101 and the second connecting structure 201, and a fixed radial rotation angle of the first adapter tire 1; such as Figure 2 As shown, the first connecting structure 101 is provided with a third through hole 1011; as Figure 4 As shown, the second connecting structure 201 is provided with a fourth through hole 2012 that is coaxially arranged with the third through hole 1011.

[0057] When implementing, such as Figure 5 , Figure 6 As shown, a third screw 603 with a diameter matching the inner diameter of the third through hole 1011 and the fourth through hole 2012 is selected. After passing through the third through hole 1011 and the fourth through hole 2012 in sequence, it is fastened with a nut to achieve the pressing and fastening of the first connecting structure 101 and the second connecting structure 201. At the same time, the first screw 601 provides a reverse support force between the first connecting structure 101 and the second connecting structure 201. Under the combined action of the reverse support force and the pressing force provided by the third screw 603, the first adapter tire 1 is fixedly connected to the first adjusting unit 2, and the connection distance between the first connecting structure 101 and the second connecting structure 201 is fixed, thereby fixing the radial rotation angle of the first adapter tire 1.

[0058] Specifically, to facilitate the datum alignment of irregularly shaped welded parts, the datum points for these parts are typically set as two on one end face and two on the other end face; for example, such as Figure 2 As shown, the first adapter tire 1 has two positioning pins 7 on its connecting end face, which are inserted into the positioning point and used for positioning the positioning point; when the coplanar plane of the two positioning pins 7 is horizontal, it is determined that the end face of the positioning point corresponding to the two positioning pins 7 has completed radial reference alignment.

[0059] Specifically, confirming the coplanar horizontal alignment of the two locating pins 7 can be achieved using the milling machine's coordinate system and a dial indicator on the machine spindle. During implementation, a dial indicator is mounted on the machine spindle, allowing it to move horizontally. The dial indicator's displacement probe sequentially contacts the top surface of the two locating pins 7, recording the z-axis coordinates of the two points with the same dial indicator reading. When the locating pins 7 are at the same height, the absolute value of the difference between the z-axis coordinate readings of the two points is less than a threshold and close to 0.

[0060] Compared with existing technologies, this invention transforms the horizontal positioning of the reference point into the height positioning and levelness comparison of the positioning pin by setting a positioning pin at the reference point; and achieves precise positioning of the reference point within the end face by using a dial indicator, which greatly improves the accuracy, efficiency and reliability of the reference point alignment.

[0061] Furthermore, after the radial rotation angle of the first adapter 1 is rotated and fixed on the side connected to the first adapter 1, it is necessary to fix the second adjustment unit 4 to the other end of the end face irregular welding part and the second adapter 3 to avoid the phenomenon of loose fixation due to the end face irregular welding part 5 being fixed on one side.

[0062] like Figure 7 As shown, the second adapter tire 3 is provided with a second fixed frame 302, and the second adjustment unit 4 is provided with a second annular inner wall 404; on the side of the second adapter tire 3 connected to the second adjustment unit 4, the end of the second fixed frame 302 is provided with a third connecting structure 301, and the second adjustment unit 4 on the same side is provided with a fourth connecting structure 401 at the end of the second annular inner wall 404, which is matched and connected with the third connecting structure 301.

[0063] Specifically, one feasible implementation is as follows: Figure 8 As shown, the end face of the irregularly shaped welded part 5 is a regular circle. The second adapter 3 is on both sides connected to the second adjustment unit 4. There are two third connecting structures 301 and two matching fourth connecting structures 401. In this invention, the third connecting structure 301 and the fourth connecting structure 401 are fastened together by screws, and the irregularly shaped welded part 5 is clamped and fastened by the inner side of the second annular inner wall 404 and the second fixing frame 302, so as to fix the irregularly shaped welded part 5 at the end face.

[0064] Specifically, another feasible embodiment, such as Figure 9 As shown, the end face of the irregularly shaped welded part 5 is irregularly shaped. The second adapter 3 is provided with a second conforming fixture 303. One side of the second conforming fixture 303 is fitted and connected to the inner side of the second annular inner wall 404 and the second fixing frame 302, and the other side abuts against the irregularly shaped welded part 5. On both sides of the second adapter 3 connected to the second adjustment unit 4, there are two third connecting structures 301 and two matching fourth connecting structures 401. In this invention, the third connecting structures 301 and the fourth connecting structures 401 are fastened together with screws, and the irregularly shaped welded part 5 is clamped and fastened by the second annular inner wall 404, the inner side of the second fixing frame 302, and one side of the second conforming fixture 303, so as to fix the irregularly shaped welded part 5 at this end face.

[0065] It should be noted that, after the first adapter 1 is aligned with the reference of the connecting end face by adjusting the radial rotation angle of the first adapter 1, the plane containing all the reference points on both ends of the irregularly shaped welded part 5 is not necessarily horizontal. Therefore, for an irregularly shaped welded part 5 after the end face reference is aligned, it is necessary to align all the reference points on both ends.

[0066] Specifically, first adjust the position of the reference point to make the line connecting the two reference points on the connecting end face of the first adapter 1 horizontal, and then further adjust the height of the end face to make the plane where the two reference points on the end face are located and the reference point on the other end face are horizontal, thereby realizing the reference alignment of the irregularly shaped welded parts.

[0067] Furthermore, in order to adjust the height of the connecting end face of the first adapter tire 1, the first adjustment unit 2 is provided with a lifting device 205 for adjusting the height of the connecting end face of the first adapter tire 1.

[0068] Specifically, such as Figure 10 As shown, the first adjustment unit 2 is provided with: a first bracket 202 with a first annular inner wall 209 and a second connecting structure 201 fixed on one side, a base plate 203 fixedly connected to the other side of the first bracket 202, a first base 204 located below the base plate 203, and a lifting device 205 with its fixed end fixed to the first base 204 and its movable end fixedly connected to the base plate 203.

[0069] Specifically, the connecting end face of the first adapter tire 1 is fixedly connected to the base plate 203 through the first bracket 202. The lifting device 205 can control the height of the connecting end face of the first adapter tire 1 relative to the first base 204 and the horizontal plane by controlling the lifting of the base plate 203.

[0070] Specifically, the lifting device 205 can be a hydraulic lifting device.

[0071] To ensure that the position of the connecting end face of the first adapter tire 1 is fixed after the height adjustment relative to the horizontal plane, such as Figure 11 As shown, the first base 204 is connected to the first fixing structure 206. The first fixing structure 206 is provided with a clamping component that can clamp the protrusion of the substrate 203 and fix the height of the substrate 203.

[0072] Specifically, the first fixed structure 206 can be a three-jaw chuck.

[0073] Simultaneously, to match the height adjustment of the connecting end face of the first adapter tire 1, such as Figure 7 , Figure 12 As shown, the second adjustment unit 4 also includes a second bracket 402 fixedly connected to the second annular inner wall 404 and the fourth connecting structure 401 on one side, a rotating structure 405 fixedly connected to the other side of the second bracket 402, and a second fixing structure 403 for controlling the rotation angle of the rotating structure 405. While the lifting device 205 adjusts the height of the connecting end face of the first adapter 1 relative to the first base 204, the rotating structure 405 and the second bracket 402 connected thereto rotate relative to the axis of the second fixing structure 403; the rotating structure 405 is movably connected to the base of the second adjustment unit 4 and can rotate around the base of the second adjustment unit 4; when the first fixing structure 206 clamps the protrusion of the base plate 203 and fixes the height of the base plate 203, the clamping component of the second fixing structure 403 fixes the rotating structure 405 to prevent it from rotating further.

[0074] Specifically, the second fixed structure 403 can be a three-jaw chuck.

[0075] Compared with existing technologies, this invention, by setting up a lifting device connecting the first base and the base plate, a rotating structure fixedly connected to the other side of the second support, and a second fixed structure for controlling the rotation angle of the rotating structure, achieves the same rotation of the second adapter tire connecting end face when the height of the first adapter tire connecting end face is adjusted. This ensures that the planes containing the reference points of the first and second adapter tire connecting end faces are parallel, thereby achieving radial reference alignment of irregularly shaped welded parts. Compared with existing technologies, this invention can accurately adjust the height of the first adapter tire connecting end face, achieve radial reference alignment of irregularly shaped welded parts, greatly improve the reference point transmission accuracy, and significantly mitigate the adverse effects of welding deformation.

[0076] Furthermore, in order to achieve axial reference alignment of the irregularly shaped welded parts, the first adjustment unit 2 is configured as two parts that can slide horizontally relative to each other, wherein the part that is fixedly connected to the first adapter 1 can move horizontally relative to the other part.

[0077] Specifically, such as Figure 10 , Figure 11As shown, the first adjustment unit 2 is also provided with a base 207 that is slidably connected to the bottom of the first base 204. One side of the base 207 is provided with a protrusion 2071 and an axially horizontal fifth threaded through hole 2072 passing through the protrusion 2071. An adjusting bolt 208 with a pitch matching the fifth threaded through hole 2072 is used to fix the protruding end of the adjusting bolt 208 through the fifth threaded through hole 2072 to the first base 204. Rotating the adjusting bolt 208 enables the first base 204 to move simultaneously parallel to the second adapter tire connection end face and the horizontal plane.

[0078] Compared with the prior art, the present invention sets up a base that is slidably connected to the bottom of the first base, and rotates the adjusting bolt to make the first base move parallel to the plane connecting the first base and the base, so that the included angle between the two end faces and the opposite side faces changes slightly, and the line connecting the two end face reference points and the corresponding reference points is close to parallel to the axial direction of the welded part; thereby realizing the axial reference alignment of the irregularly shaped welded part; it greatly improves the reference transfer accuracy of the reference points compared with the prior art, and greatly improves the adverse effects caused by welding deformation.

[0079] On the other hand, the present invention provides a reference alignment method for irregularly shaped welded parts with end faces, using the above-mentioned alignment device, such as... Figure 13 As shown, it includes the following steps:

[0080] Step 1: Secure the irregularly shaped end face of the adapter tire;

[0081] The first adapter and the first adjustment unit are fixedly connected to one end of the irregularly shaped welded part on the end face; the second adapter and the second adjustment unit are fixedly connected to the other end of the irregularly shaped welded part on the end face.

[0082] Specifically, the first adapter tire is provided with a first fixed frame and a first conforming fixture for fitting the irregularly shaped end face welding part. The first fixed frame and the first conforming fixture are fixedly connected. The first adjustment unit is provided with a first annular inner wall. The connection between the first adapter tire and the first adjustment unit is provided with a first connecting structure. The first adjustment unit is provided with a second connecting structure that matches and connects with the first connecting structure. The first adapter tire and the first adjustment unit are fixedly connected through the first connecting structure and the second connecting structure. At the same time, one side of the first conforming fixture fits and abuts against the inner wall of the first annular inner wall or the first fixed frame. The other side of the first conforming fixture and the inner wall of the first fixed frame abut against the irregularly shaped end face welding part, thereby fixing one end of the irregularly shaped end face welding part.

[0083] Specifically, the second adapter tire has a second fixed frame, and the second adjusting unit has a second annular inner wall. On the side of the second adapter tire connected to the second adjusting unit, the end of the second fixed frame has a third connecting structure. On the same side, the end of the second annular inner wall of the second adapter tire has a fourth connecting structure, which matches and connects with the third connecting structure. The second adapter tire has a second conforming fixture. One side of the second conforming fixture is fitted and connected to the inner side of the second annular inner wall and the second fixed frame, and the other side abuts against the end face irregular welded part. The third connecting structure and the fourth connecting structure are fastened together with screws. At the same time, the other end of the end face irregular welded part is clamped and fastened by the second annular inner wall, the inner side of the second fixed frame, and one side of the second conforming fixture, thereby fixing the end face irregular welded part at that end face.

[0084] Step 2: Radial reference alignment of the first adapter tire connection end face;

[0085] Adjust the radial rotation angle of the first adapter tire relative to the first adjustment unit until the line connecting the two reference points on the connecting end face of the first adapter tire is horizontal;

[0086] Specifically, the distance between the first connecting structure and the second connecting structure connecting the first adapter tire and the first adjusting unit is adjustable; the first adapter tire and the first adjusting unit have two connection points on each side, with two matching first connecting structures and two matching second connecting structures, and the first and second connecting structures are matched and connected. By adjusting (increasing or decreasing) the connection distance between the first and second connecting structures on the same side, the connection distance between the first and second connecting structures on the other side is adjusted in the opposite direction, thereby achieving radial rotation of the first adapter tire.

[0087] Specifically, using the three-dimensional coordinate system of the CNC milling machine, a coordinate system is established with the axis of the irregularly shaped welded part on the end face as the x-axis, the direction perpendicular to the axis of the irregularly shaped welded part on the end face in the horizontal plane as the y-axis, and the direction perpendicular to the horizontal plane as the z-axis. The rotation angle of the first adapter is adjusted so that the z-axis coordinates of each reference point on the connecting end face are the same.

[0088] During implementation, in order to facilitate the alignment of the reference point on the first adapter tire connection end face, a positioning pin is provided at the reference point on the second adapter tire connection end face. The rotation angle of the first adapter tire is adjusted so that the z-axis coordinate of the positioning pins at each reference point on the first adapter tire connection end face is the same.

[0089] Step 3: Align the two ends of the irregularly shaped welded parts to the same height;

[0090] Adjust the height of the first adapter tire connection end face so that the first adapter tire and its fixed connection end face rotate slightly around the rotating structure of the second adjustment unit, so that the first adapter tire connection end face is at the same height as all reference points within the second adapter tire connection end face.

[0091] Specifically, the first adjustment unit is equipped with a lifting device for adjusting the height of the connecting end face of the first adapter tire; the second adjustment unit is equipped with a second bracket fixedly connected to the fourth connecting structure on one side and a rotating structure fixedly connected to the other side of the second bracket. The rotating structure is movably connected to the base of the second adapter tire and can rotate around the base of the second adjustment unit. While the lifting device adjusts the height of the connecting end face of the first adapter tire, the rotating structure and the connecting end face of the second adapter tire rotate until all reference points within the connecting end face of the first adapter tire and the connecting end face of the second adapter tire are at the same height and coplanar.

[0092] Specifically, using the three-dimensional coordinate system of the CNC milling machine, a coordinate system is established with the axis of the irregularly shaped welded part on the end face as the x-axis, the direction perpendicular to the axis of the irregularly shaped welded part on the end face in the horizontal plane as the y-axis, and the direction perpendicular to the horizontal plane as the z-axis. The z-axis coordinate of the reference point of the first adapter tire connection end face is adjusted to be the same as the z-axis coordinate of the corresponding reference point of the second adapter tire connection end face.

[0093] During implementation, locating pins are provided at the reference points of the first and second adapter tire connection end faces. The z-axis coordinate of the locating pin at the reference point of the first adapter tire connection end face is adjusted to be the same as the z-axis coordinate of the locating pin at the corresponding reference point of the second adapter tire connection end face.

[0094] Step 4: Axial reference alignment of both ends of the irregularly shaped welded parts;

[0095] The reference points on the connecting end face of the first adapter tire correspond one-to-one with the reference points on the connecting end face of the second adapter tire; adjust the angle between the connecting end face of the first adapter tire and the axis of the irregularly shaped welded part on the end face so that the line connecting the reference points on the connecting end face of the first adapter tire and the corresponding reference points on the connecting end face of the second adapter tire is parallel to the axis of the irregularly shaped welded part on the end face.

[0096] It should be noted that the reference points of the first adapter tire connection end face correspond one-to-one with the reference points of the second adapter tire connection end face. Ideally, the line connecting the corresponding reference points of the irregularly shaped welded parts on the end face is parallel to the axis of the irregularly shaped welded parts on the end face. However, due to the welding deformation of the irregularly shaped welded parts on the end face, the positions of the reference points and their corresponding reference points change, which in turn causes the line connecting the corresponding reference points to be non-parallel to the axis of the irregularly shaped welded parts on the end face. Therefore, it is necessary to adjust the angle between the first adapter tire connection end face and the axis of the irregularly shaped welded parts on the end face.

[0097] Specifically, the first adjustment unit is provided with a first base fixedly connected to the first adapter tire and a base slidably connected to the bottom of the first base; one side of the base is provided with a protrusion and an axially horizontal fifth threaded through hole passing through the protrusion; an adjusting bolt matching the pitch of the fifth threaded through hole is used, and the end of the adjusting bolt passing through the fifth threaded through hole is fixedly connected to the first base. Rotating the adjusting bolt realizes that the first base moves parallel within the plane connecting the first base and the base; thereby realizing the adjustment of the included angle between the axis of the connecting end face of the first adapter tire and the axis of the irregular welded part on the end face, and adjusting the line connecting the reference point of the connecting end face of the first adapter tire and the corresponding reference point of the connecting end face of the second adapter tire to be parallel to the axis of the irregular welded part on the end face.

[0098] Specifically, using the three-dimensional coordinate system of the CNC milling machine, a coordinate system is established with the axis of the irregularly shaped welded part on the end face as the x-axis, the direction perpendicular to the axis of the irregularly shaped welded part on the end face in the horizontal plane as the y-axis, and the direction perpendicular to the horizontal plane as the z-axis. The y-axis coordinate of the reference point of the first adapter tire connection end face is adjusted to be the same as the y-axis coordinate of the corresponding reference point of the second adapter tire connection end face.

[0099] Compared with the prior art, on the one hand, the present invention, by setting a first fixed frame, a first conforming fixture, and a first annular inner wall matching the curvature of the first fixed frame in the first adapter, and by adjusting the first conforming fixture, realizes the fixing and positioning of any irregular end face by the circular standard fixture; thus improving the problem of difficulty in fixing welded parts with irregular end faces in the prior art.

[0100] On the other hand, by setting positioning pins at the reference points, the present invention transforms the horizontal positioning of the reference points into the height positioning and horizontality comparison of the positioning pins; by using the positioning pins, the precise positioning of the reference points within the end face is achieved, which greatly improves the accuracy, efficiency and reliability of the reference point alignment.

[0101] On the other hand, this invention, by setting up a lifting device for adjusting the height of the first adapter tire and its connecting end face, and a rotating structure for rotating the second adapter tire and its connecting end face, achieves that when the height of the connecting end face of the first adapter tire is adjusted, the connecting end face of the second adapter tire rotates accordingly. This ensures that the reference points of the first and second adapter tire connecting end faces are parallel, thereby achieving radial reference alignment of irregularly shaped welded parts. Compared with the prior art, this invention can accurately adjust the height of the connecting end face of the first adapter tire, achieve radial reference alignment of irregularly shaped welded parts, greatly improve the reference transfer accuracy of the reference points, and significantly mitigate the adverse effects of welding deformation.

[0102] Specifically, step 1, fixing the irregular end face of the adapter tire, includes the following steps:

[0103] S101: Fixing of the first adapter tire connection end face;

[0104] Specifically, the first adapter 1 includes a first fixed frame 102 and a first conformal fixture 103. The first fixed frame 102 and the first conformal fixture 103 are fixedly connected to the first connecting structure 101. The other side of the first conformal fixture 103 and the inner wall of the first fixed frame 102 abut against the end face irregular welded part 5 to fix the end face irregular welded part. A through hole 1021 is provided on the side where the first fixed frame 102 and the first conformal fixture 103 are connected. A second threaded hole 1031 is provided on the same side of the first conformal fixture 103. A second screw 602 with a pitch matching the second threaded hole 1031 is selected, passes through the through hole 1021 and is fixedly connected to the second threaded hole 1031 to realize the fixed connection between the fixed frame 102 and the first conformal fixture 103.

[0105] S102: Fixing of the second adapter tire connection end face;

[0106] Specifically, the second adapter tire 3 is provided with a second conforming fixture 303; one side of the second conforming fixture 303 is fitted and connected to the inner side of the second annular inner wall 404 and the second fixed frame 302, and the other side abuts against the end face irregular welded part 5. The second adapter tire 3 and the second adjustment unit 4 are connected at two positions, and correspondingly, two third connecting structures 301 and two matching fourth connecting structures 401 are provided; the third connecting structures 301 and the fourth connecting structures 401 are fastened together by screws, and at the same time, the end face irregular welded part 5 is clamped and fastened by the second annular inner wall 404, the inner side of the second fixed frame 302, and one side of the second conforming fixture 303, so as to fix the end face irregular welded part 5 at the end face.

[0107] Specifically, step 2, radial reference alignment of the first adapter tire connection end face, includes the following steps:

[0108] S201: Adjustment of the rotation angle of the first adapter tire;

[0109] The radial rotation angle of the first adapter tire 1 can be adjusted by using screws and matching threads to adjust the connection distance between the first connecting structure 101 and the second connecting structure 201.

[0110] Specifically, the second connecting structure 201 is provided with a second threaded through hole 2011; a first screw 601 matching the pitch of the second threaded through hole 2011 is selected, passes through the second threaded through hole 2011, and abuts against and supports the first connecting structure 101. Both sides of the second connecting structure 201 are provided with second threaded through holes 2011. Rotating the first screw 601 on one side adjusts the connection distance between the first connecting structure 101 and the second connecting structure 201 on that side; at the same time, rotating the first screw 601 on the other side in the opposite direction adjusts the connection distance between the first connecting structure 101 and the second connecting structure 201 on the other side in the opposite direction, thereby realizing the radial rotation and rotation angle adjustment of the first adapter tire 1.

[0111] S202: Horizontal alignment of the reference point on the first adapter tire connection end face;

[0112] Specifically, a positioning pin perpendicular to the first adapter tire connection end face is set at the reference point of the first adapter tire connection end face, and the levelness of the plane containing the straight line of the positioning pin is measured.

[0113] Specifically, a dial indicator is used to locate the point to be measured, which corresponds to the positioning pin of the reference point on the first adapter tire connection end face.

[0114] Specifically, the positioning coordinates of the positioning pin to be measured point corresponding to the reference point of the first adapter tire connection end face are obtained by using the coordinate system of the CNC milling machine;

[0115] It should be noted that after setting the locating pin at the reference point, the positioning of the reference point in the CNC milling machine coordinate system is achieved by using the locating pin. It is necessary to confirm the measurement point of the locating pin to avoid inconsistent measurement standards of the locating pin and the lack of comparability of measurement data.

[0116] Specifically, it includes the following steps:

[0117] S2021: Benchmark point positioning;

[0118] A positioning hole is made on the vertical end face reference point of the first adapter tire connection end face, and a positioning pin is inserted.

[0119] S2022: Positioning pin alignment;

[0120] A dial indicator is set on the spindle of a CNC milling machine. The dial indicator is moved along the x-axis to the top of the locating pin, and the change in the dial indicator pointer reading is recorded. If the change in the dial indicator pointer reading is less than the set value, it is considered that the locating pin is strictly perpendicular to the end face.

[0121] Specifically, the levelness of the positioning block is evaluated by the change in the dial indicator reading η: if η is less than 0.05 mm, the positioning pin is considered to be strictly perpendicular to the end face; η satisfies: η = S max -S min , among which, S max S represents the maximum value of the dial indicator pointer reading. min This represents the minimum reading of the dial indicator.

[0122] S2023: Measurement of the z-axis coordinate of the positioning pin corresponding to the reference point of the first adapter tire connection end face;

[0123] Specifically, it includes the following steps:

[0124] S20231: Place the dial indicator at any point on the top of the locating pin corresponding to the first reference point on the first adapter tire connection end face, so that the dial indicator has pressure contact, and adjust the dial indicator to display a non-zero reading; clear the dial indicator reading to zero, and record the first reference point CNC milling machine coordinate system display z-axis coordinate z1;

[0125] S20232: Place the dial indicator at any point on the top of the positioning pin corresponding to the second reference point on the first adapter tire connection end face, adjust the position of the dial indicator so that the dial indicator reading is zero, and record the z-axis coordinate z2 of the second reference point displayed in the CNC milling machine coordinate system; if the absolute value of the difference between z1 and z2 is less than the threshold, then it is determined that the two reference points on the first adapter tire connection end face are strictly horizontal.

[0126] Specifically, the threshold is 0.05 mm.

[0127] Compared with existing technologies, using a dial gauge to achieve a benchmark point

[0128] S203: The radial reference alignment position of the first adapter tire connection end face is fixed;

[0129] The first adapter tire, the first adjustment unit, the first connecting structure, and the second connecting structure are used to fix the connecting end face of the first adapter tire, thereby fixing the radial reference alignment position of the connecting end face of the first adapter tire.

[0130] Specifically, the first connecting structure 101 is provided with a third through hole 1011; the second connecting structure 201 is provided with a fourth through hole 2012 that matches the third through hole 1011; a third screw 603 with a diameter matching the inner diameter of the third through hole 1011 and the fourth through hole 2012 is selected, and its protruding end after passing through the third through hole 1011 and the fourth through hole 2012 is fastened with a nut, thereby realizing the pressing and fastening of the first connecting structure 101 and the second connecting structure 201; at the same time, the first screw 601 provides a reverse support force between the first connecting structure 101 and the second connecting structure 201. Under the combined action of the reverse support force and the pressing force provided by the third screw 603, the first adapter tire 1 is fixedly connected to the first adjusting unit 2, and the connection distance between the first connecting structure 101 and the second connecting structure 201 is fixed, thereby realizing the fixing of the radial rotation angle of the first adapter tire 1.

[0131] Specifically, step 3, which involves aligning the two ends of the irregularly shaped welded part to the same height, includes the following steps:

[0132] S301: Height adjustment of the first adapter tire connection end face;

[0133] The height of the first adapter tire connection end face is adjusted by using the lifting device in the first adjustment unit.

[0134] Specifically, the first adjustment unit 2 is further provided with: a first bracket 202 with a first annular inner wall 209 and a second connecting structure 201 fixed on one side, a base plate 203 fixedly connected to the other side of the first bracket 202, and a first base 204; wherein the first base 204 and the base plate 203 are connected by a lifting device 205; the connecting end face of the first adapter 1 is fixedly connected to the base plate 203 through the first bracket 202, and the lifting device 205 can control the lifting of the base plate 203 to control the height of the connecting end face of the first adapter 1 relative to the first base 204 and the horizontal plane.

[0135] S302: The second adapter tire connection end face rotates on the y-axis;

[0136] The rotating structure 405 in the second adjustment unit 4 is fixedly connected to the connecting end face of the second adapter tire and movably connected to the base of the second adjustment unit 4; when the height of the connecting end face of the first adapter tire is adjusted by using the rotating structure 405, the connecting end face of the second adapter tire rotates in a matching manner along the y-axis.

[0137] Specifically, the second adjustment unit 4 is further provided with a second bracket 402 fixedly connected to the fourth connecting structure 401 on one side; the rotating structure 405 is fixedly connected to the second bracket 402, movably connected to the base of the second adjustment unit 4 and can rotate around the y-axis; at the same time, the second bracket 402 is fixedly connected to the connecting end face of the second adapter tire through the fourth connecting structure 401, and the connecting end face of the second adapter tire is fixedly connected to the connecting end face of the first adapter tire through the end face irregular welding part 5; therefore, when the height of the connecting end face of the first adapter tire is adjusted, the connecting end face of the second adapter tire can achieve matching rotation on the y-axis.

[0138] S303: Height correction of the reference point between the first adapter tire connection end face and the second adapter tire connection end face;

[0139] The height of the reference points of the first adapter tire connection end face and the second adapter tire connection end face is corrected by using the coordinate system of the CNC milling machine and a dial indicator.

[0140] Specifically, it includes the following steps:

[0141] S3031: Positioning of the reference point on the connecting end face of the second adapter tire;

[0142] A positioning hole is made on the vertical end face reference point of the second adapter tire connection end face, and a positioning pin is inserted.

[0143] S3032: Correction of positioning pins on the second adapter tire connection end face;

[0144] A dial indicator is set on the spindle of a CNC milling machine. The dial indicator is moved along the x-axis to the top of the locating pin, and the change in the dial indicator pointer reading is recorded. If the change in the dial indicator pointer reading is less than the set value, it is considered that the locating pin of the second adapter tire connection end face is strictly perpendicular to the end face.

[0145] Specifically, the levelness of the positioning block is evaluated by the change in the dial indicator reading η: if η is less than 0.05 mm, the positioning pin is considered to be strictly perpendicular to the end face; η satisfies: η = S max -S min , among which, S max S represents the maximum value of the dial indicator pointer reading. min This represents the minimum reading of the dial indicator.

[0146] S3033: Z-axis coordinate measurement of the positioning pin corresponding to the reference point of the first adapter tire connection end face and the second adapter tire connection end face;

[0147] Specifically, the z-axis coordinates of the positioning pins corresponding to the reference points of the first and second adapter tire connection end faces are obtained using the CNC milling machine coordinate system.

[0148] Specifically, it includes the following steps:

[0149] S30331: Place the dial indicator at any point on the top of the locating pin corresponding to the first reference point on the first adapter tire connection end face, so that the dial indicator has pressure contact, and adjust the dial indicator to display a non-zero reading; clear the dial indicator reading to zero, and record the first reference point CNC milling machine coordinate system display z-axis coordinate z1;

[0150] S30332: Place the dial indicator at any point on the top of the locating pin of the second adapter tire connection end face reference point corresponding to the first reference point of the first adapter tire connection end face. Adjust the position of the dial indicator until the dial indicator reading is zero, and record the z-axis coordinate z1 of this reference point in the CNC milling machine coordinate system display. · ;

[0151] S30333: Using the same method, measure the second reference point on the connecting end face of the first adapter tire and its corresponding reference point's z-axis coordinates z2 and z2. · z2 and z2 · z1 and z1 · If the absolute value of the difference is less than the threshold, then it is determined that the four reference points of the first adapter tire connection end face and the second adapter tire connection end face are strictly horizontal and coplanar.

[0152] Specifically, the threshold is 0.05 mm.

[0153] S304: The height of the first adapter tire connection end face and the second adapter tire connection end face is fixed;

[0154] The height of the first adapter tire connection end face is fixed by the first fixing structure of the first adjusting unit, and the y-axis rotation angle of the second adapter tire connection end face is fixed by the second fixing structure of the second adjusting unit.

[0155] Specifically, the first adjustment unit 2 is provided with a first fixing structure 206 fixedly connected to the first base 204; the first fixing structure 206 is provided with a clamping component that can clamp the protrusion of the substrate 203 to fix the height of the substrate 203. The second adjustment unit 4 is provided with a second fixing structure 403 fixedly connected to the base of the second adjustment unit 4; when the first fixing structure 206 clamps the protrusion of the substrate 203 to fix the height of the substrate 203, the clamping component of the second fixing structure 403 fixes the rotating structure 405 to prevent it from rotating further.

[0156] Specifically, step 4, the axial reference alignment of the two end faces of the irregularly shaped welded part, includes the following steps:

[0157] S401: The position of the first adapter tire connection end face in the y-axis direction is adjusted;

[0158] The first adjustment unit 2 is provided with a base 207 that is slidably connected to the bottom of the first base 204. One side of the base 207 is provided with a protrusion 2071 and an axially horizontal fifth threaded through hole 2072 passing through the protrusion 2071. An adjusting bolt 208 with a pitch matching the fifth threaded through hole 2072 is used to fix the protruding end of the adjusting bolt 208 through the fifth threaded through hole 2072 to the first base 204. Rotating the adjusting bolt 208 enables the first base 204 to move parallel within the plane connecting the first base 204 and the base 207.

[0159] S402: Correction of the y-axis coordinate of the reference point between the first adapter tire connection end face and the second adapter tire connection end face;

[0160] The y-axis coordinates of the reference points of the first and second adapter tire connection end faces are corrected using the coordinate system of a CNC milling machine and a dial indicator.

[0161] Specifically, the measurement of the y-axis coordinates of the locating pins corresponding to the reference points of the first and second adapter tire connection end faces includes the following steps:

[0162] S4021: Place the dial indicator at any point on the top of the locating pin corresponding to the first reference point on the first adapter tire connection end face, so that the dial indicator has pressure contact, and adjust the dial indicator to display a non-zero reading; clear the dial indicator reading to zero, and record the first reference point CNC milling machine coordinate system display y-axis coordinate y1;

[0163] S4022: Place the dial indicator at any point on the top of the locating pin of the second adapter tire connection end face reference point corresponding to the first reference point of the first adapter tire connection end face. Adjust the position of the dial indicator until the dial indicator reading is zero, and record the y-axis coordinate y1 of this reference point in the CNC milling machine coordinate system display. · ;

[0164] S4023: Using the same method, measure the second reference point on the connecting end face of the first adapter tire and its corresponding z-axis coordinates y2 and y2. · ;y2 and y2 · y1 and y1 · If the absolute value of the difference is less than the threshold, it is determined that the axial reference alignment of the first adapter tire connection end face and the second adapter tire connection end face is completed.

[0165] Specifically, the threshold is 0.05 mm.

[0166] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for datum alignment of irregularly shaped welded parts, characterized in that, The reference alignment method for the irregularly shaped welded parts uses the following alignment device, which includes: a first adapter fixedly connected to one end of the irregularly shaped welded parts; a first adjustment unit fixedly connected to one end of the irregularly shaped welded parts and the first adapter; a second adapter fixedly connected to the other end of the irregularly shaped welded parts; and a second adjustment unit fixedly connected to the other end of the irregularly shaped welded parts and the second adapter; the first adapter and the first adjustment unit are provided with an adjustable spacing connection structure; The first adapter is used to fix and connect to the irregular end face of one end of the irregular welded part and control the radial rotation angle of the irregular end face. The first adjustment unit is used to control the height of the irregular end face connected to the first adapter. The second adapter is used to fix the irregular end face of the other end of the irregular welded part. The second adjustment unit is used to control the height adjustment of the irregular end face connected to match the first adapter and the rotation angle of the irregular end face connected to the second adapter. The method for datum alignment of irregularly shaped welded parts includes the following steps: The first adapter and the first adjustment unit are fixedly connected to one end of the irregularly shaped welded part; wherein, the first adapter is used to fix the irregularly shaped end face of one end of the irregularly shaped welded part and control the radial rotation angle of the irregularly shaped end face, and the first adjustment unit is used to control the height of the irregularly shaped end face connected by the first adapter. The second adapter and the second adjustment unit are fixedly connected to the other end of the irregularly shaped welded part. The second adapter is used to fix the irregularly shaped end face of the other end of the irregularly shaped welded part, and the second adjustment unit is used to control the height adjustment of the irregularly shaped end face connected to match the first adapter and the rotation angle of the irregularly shaped end face connected to the second adapter. Adjust the radial rotation angle of the first adapter tire relative to the first adjustment unit until the line connecting the two reference points on the connecting end face of the first adapter tire is horizontal, thereby achieving radial reference alignment of the connecting end face of the first adapter tire; make a positioning hole perpendicular to the end face at the reference point on the connecting end face of the first adapter tire, and insert a positioning pin into the positioning hole; use a dial indicator to measure the pin to achieve reference point alignment. Adjust the height of the first adapter tire connection end face so that the first adapter tire and its fixed connection end face rotate slightly around the rotating structure of the second adjustment unit, so that all reference points within the first adapter tire connection end face and the second adapter tire connection end face are at the same height, thus achieving equal height alignment of the two end faces of the irregularly shaped welded parts; make positioning holes perpendicular to the end face at the reference points of the second adapter tire connection end face, and insert positioning pins into the positioning holes; use a dial indicator to measure the pins to achieve reference point alignment; The reference points on the connecting end face of the first adapter tire correspond one-to-one with the reference points on the connecting end face of the second adapter tire. Adjust the angle between the connecting end face of the first adapter tire and the axis of the irregularly shaped welded part on the end face so that the line connecting the reference points on the connecting end face of the first adapter tire and the corresponding reference points on the connecting end face of the second adapter tire is parallel to the axis of the irregularly shaped welded part on the end face, thereby achieving axial reference alignment of the two end faces of the irregularly shaped welded part.

2. The reference alignment method for irregularly shaped welded parts with end faces according to claim 1, characterized in that, The first adapter tire is provided with a first connection structure at the connection point with the first adjustment unit; the first adjustment unit is provided with a second connection structure that matches and connects with the first connection structure.

3. The reference alignment method for irregularly shaped welded parts with end faces according to claim 2, characterized in that, The first adapter tire and the first adjustment unit have two connection points, and each connection point is matched with a first connection structure and a second connection structure.

4. The reference alignment method for irregularly shaped welded parts with end faces according to claim 3, characterized in that, The second connecting structure is provided with a second threaded through hole; a first screw with a matching pitch passes through the second threaded through hole; after passing through the second threaded through hole, the first screw abuts against the first connecting structure and supports the first connecting structure from the bottom.

5. The reference alignment method for irregularly shaped welded parts with end faces according to claim 4, characterized in that, The first connecting structure is provided with a third through hole; the second connecting structure is provided with a fourth through hole coaxially arranged with the third through hole; a third screw with a diameter matching the inner diameter of the third through hole and the fourth through hole passes through the third through hole and the fourth through hole, so as to realize the fixed connection between the first connecting structure and the second connecting structure.

6. The reference alignment method for irregularly shaped welded parts with end faces according to claim 5, characterized in that, The first adapter tire includes a first fixed frame and a first conformal fixture; the first fixed frame and the first conformal fixture are fixedly connected to the first connecting structure; the first adjusting unit has a first annular inner wall that matches the curvature of the first fixed frame between the second connecting structures on both sides of the first adapter tire; one side of the first conformal fixture abuts against the first annular inner wall or the inner wall of the first fixed frame; the other side of the first conformal fixture and the inner wall of the first fixed frame abut against the outer wall of the end face irregular welded part.

7. The reference alignment method for irregularly shaped welded parts with end faces according to claim 6, characterized in that, The first adjustment unit further includes: a first bracket fixedly connected to one side of the second connection structure, a base plate fixedly connected to the other side of the first bracket, a first base located below the base plate, and a lifting device with its fixed end fixed to the first base plate and its movable end fixedly connected to the base plate.

8. The reference alignment method for irregularly shaped welded parts with end faces according to claim 7, characterized in that, The second adjustment unit includes: a fourth connecting structure fixedly connected to the second adapter tire, a second bracket fixedly connected to the fourth connecting structure on one side, and a rotating structure fixedly connected to the other side of the second bracket.

9. The datum alignment method for irregularly shaped welded parts with end faces according to any one of claims 1-8, characterized in that, The first adjustment unit is configured as two parts that can slide horizontally relative to each other, wherein the part that is fixedly connected to the first adapter tire can move horizontally relative to the other part.

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