Production process of special-shaped metal part

Abstract

The invention discloses a production process of a special-shaped metal piece, which comprises a welding tool and a detection tool, the welding tool and the detection tool are adopted to weld and detect the special-shaped metal piece respectively, the special-shaped metal piece comprises a first main arm and a second main arm which are symmetrically arranged, and a connecting rod and a connecting arm which are connected to the first main arm and the second main arm, the welding tool comprises a horizontally-arranged first workbench, a first main arm clamp, a second main arm clamp, a connecting rod clamp, a connecting arm clamp and an end rod clamp, wherein the first main arm clamp and the second main arm clamp relatively slide on the top face of the first workbench, the connecting rod clamp and the connecting arm clamp are arranged between the first main arm clamp and the second main arm clamp, and the end rod clamp is arranged on the outer side of the connecting arm clamp in a sliding mode. The gauge comprises a horizontally arranged second workbench, a support frame arranged on the top surface of the second workbench, and a first go gauge, a second go gauge, a third go gauge, a fourth go gauge and a fifth go gauge which are respectively arranged on the support frame in a sliding manner. The production process of the special-shaped metal part is clear in steps, and the welding quality and efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal product production, and in particular to a production process of special-shaped metal parts. Background Art

[0002] The body components of automobiles are mainly made of cold-rolled steel stamping parts with good stamping and welding processability, which are assembled and welded. The welding production is large in batches, fast in production speed, and requires high assembly and welding precision of the welded parts. In the prior art, due to the lack of adaptability between special-shaped metal parts and welding tooling, the assembly and welding process steps are unclear, which easily affects the welding quality and efficiency. In view of the emergence of the above problems, the prior art has not solved them well, which has brought troubles to the normal operation of work in this field. Therefore, there is an urgent need for a production process for special-shaped metal parts to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a production process for special-shaped metal parts to overcome the shortcomings of the prior art.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The embodiment of the present invention discloses a production process of a special-shaped metal part, comprising:

[0006] Multi-stage hydraulic cylinder, an actuator for output pressure,

[0007] The method comprises a welding tool and a checking fixture, wherein the welding tool and the checking fixture are used to respectively weld and check a special-shaped metal part, wherein the special-shaped metal part comprises a first main arm and a second main arm which are symmetrically arranged, and a connecting rod, a connecting arm and an end rod which are connected between the first main arm and the second main arm, and comprises the following steps:

[0008] S1. Place the connecting arm on a welding fixture, and use the welding fixture to fix the first main arm and the second main arm to the two ends of the connecting arm respectively, and then fix the connecting rod and the end rod to the corresponding positions between the first main arm and the second main arm respectively;

[0009] S2, welding the connecting rod, the connecting arm and the two ends of the end rod to the first main arm and the second main arm respectively;

[0010] S3. Detect the shape, position and dimensions of special-shaped metal parts;

[0011] The welding tool comprises a first workbench arranged horizontally, a first main arm clamp and a second main arm clamp sliding relatively on the top surface of the first workbench, a connecting rod clamp and a connecting arm clamp arranged between the first main arm clamp and the second main arm clamp, and an end rod clamp slidingly arranged outside the connecting arm clamp;

[0012] The inspection tool comprises a second workbench arranged horizontally, a support frame arranged on the top surface of the second workbench, and a first through gauge, a second through gauge, a third through gauge, a fourth through gauge and a fifth through gauge respectively slidably arranged on the support frame.

[0013] Furthermore, in the above-mentioned production process of special-shaped metal parts, the first main arm clamp includes a first slide seat slidably arranged on the top surface of the first workbench and a first support seat, a second support seat, a third support seat, a fourth support seat and a first clamping device sequentially arranged on the top surface of the first slide seat, the side surfaces of the first support seat and the fourth support seat are respectively provided with a first positioning pin and a second positioning pin inserted into the first main arm, and the top ends of the second support seat and the third support seat are respectively provided with a first supporting groove and a second supporting groove for supporting the first main arm.

[0014] Furthermore, in the above-mentioned production process of special-shaped metal parts, the first clamping device includes a first cylinder arranged on a first sliding seat through a first cylinder seat and a first pressure rod hinged to the piston rod of the first cylinder, and the middle part of the first pressure rod is hinged to the cylinder barrel of the first cylinder through a first connecting rod.

[0015] Furthermore, in the above-mentioned production process of special-shaped metal parts, a limiting rod corresponding to the connecting rod is arranged on the side surface of the third supporting seat.

[0016] Furthermore, in the above-mentioned production process of special-shaped metal parts, the second main arm clamp is symmetrically arranged with the first main arm clamp, and a fifth support seat and a pressing device are arranged between the first main arm clamp and the second main arm clamp, and support blocks corresponding to the first main arm and the second main arm are respectively arranged on both sides of the fifth support seat, and a positioning rod sliding through the first main arm, two support blocks and the second main arm is arranged in the first main arm clamp or the second main arm clamp, and the pressing device includes a pressing cylinder fixed to the first workbench and two pressing blocks respectively connected to the piston rod of the pressing cylinder.

[0017] Furthermore, in the above-mentioned production process of special-shaped metal parts, the connecting rod clamp includes a sixth support seat and a second clamping device arranged on the first workbench, the top surface of the sixth support seat is provided with a V-shaped groove corresponding to the connecting rod, the second clamping device includes a second cylinder arranged on the second sliding seat through a second cylinder seat and a second pressure rod hinged to the piston rod of the second cylinder, and the middle part of the second pressure rod is hinged to the cylinder barrel of the second cylinder through a second connecting rod.

[0018] Furthermore, in the above-mentioned production process of special-shaped metal parts, the connecting arm fixture includes two seventh support seats symmetrically arranged on the first workbench, and the top end of the seventh support seat is provided with a third support groove corresponding to the connecting arm.

[0019] Furthermore, in the above-mentioned production process of special-shaped metal parts, the end rod clamp includes an eighth support seat slidably arranged on the first workbench through a slide and a third clamping device symmetrically arranged on both sides of the slide, and the eighth support seat includes two end support blocks corresponding to the end rod corners respectively and an intermediate support block arranged between the two end support blocks, and the two end support blocks are respectively provided with L-shaped grooves corresponding to the end rods.

[0020] Furthermore, in the above-mentioned production process of special-shaped metal parts, the intermediate support block is movably abutted against the side surface of the connecting arm.

[0021] Furthermore, in the above-mentioned production process of special-shaped metal parts, a plurality of error-proofing switches are arranged on the first workbench.

[0022] Compared with the prior art, the advantages of the present invention are that the production process of the special-shaped metal parts has clear production process steps for the special-shaped metal parts, thereby improving welding quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 Shown is a schematic structural diagram of a welding tool in a specific embodiment of the present invention.

[0025] Figure 2 Shown is a schematic structural diagram of a first main arm clamp and a second main arm clamp in a specific embodiment of the present invention.

[0026] Figure 3 Shown is a three-dimensional schematic diagram of a first main arm clamp and a second main arm clamp in a specific embodiment of the present invention.

[0027] Figure 4 Shown is a schematic structural diagram of a connecting rod clamp in a specific embodiment of the present invention.

[0028] Figure 5 Shown is a schematic structural diagram of a connecting arm clamp and an end rod clamp in a specific embodiment of the present invention.

[0029] Figure 6 Shown is a three-dimensional schematic diagram of a connecting arm clamp and an end rod clamp in a specific embodiment of the present invention.

[0030] Figure 7 Shown is a cross-sectional view of an intermediate support block in a specific embodiment of the present invention.

[0031] Figure 8 FIG. 1 is a schematic diagram of the structure of a checking fixture in a specific embodiment of the present invention.

[0032] Fig. 9 The figure shows a schematic diagram of the use of the first through gauge and the second through gauge in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following will describe the technical solutions in the embodiments of the present invention in detail in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] A production process for a special-shaped metal part, including a welding tool and a check fixture, wherein the welding tool and the check fixture are used to respectively weld and check the special-shaped metal part, wherein the special-shaped metal part includes a first main arm 1 and a second main arm 2 which are symmetrically arranged, and a connecting rod 3, a connecting arm 4 and an end rod 5 which are connected between the first main arm 1 and the second main arm 2, and the process includes the following steps:

[0037] S1. Place the connecting arm 4 on the connecting arm fixture 9, and fix the first main arm 1 and the second main arm 2 on the corresponding first main arm fixture 6 and the second main arm fixture 7 respectively, slide the first main arm fixture 6 and the second main arm fixture 7 relatively, and hold the first main arm 1 and the second main arm 2 against the two ends of the connecting arm 4 respectively, and then place the connecting rod 3 on the connecting rod fixture 8, and the end rod 5 on the end rod fixture 10, push the end rod fixture 10, and insert the two ends of the end rod into the first main arm 1 and the second main arm 2 respectively;

[0038] S2, welding the connecting rod 3, the connecting arm 4 and the two ends of the end rod 5 to the first main arm 1 and the second main arm 2 respectively;

[0039] S3. Detect the shape, position and dimensions of special-shaped metal parts;

[0040] Ginseng Figures 1 to 7 As shown, the welding tooling includes a first workbench arranged horizontally, a first main arm clamp 6 and a second main arm clamp 7 sliding relatively on the top surface of the first workbench, a connecting rod clamp 8 and a connecting arm clamp 9 arranged between the first main arm clamp 6 and the second main arm clamp 7, and an end rod clamp 10 slidably arranged outside the connecting arm clamp 9;

[0041] Ginseng Figure 8 and Fig. 9 As shown, the inspection fixture includes a horizontally arranged second workbench, a support frame arranged on the top surface of the second workbench, and a first through gauge 20, a second through gauge 30, a third through gauge 40, a fourth through gauge 50 and a fifth through gauge 60 respectively slidably arranged on the support frame. The support frame is a segmented structure, and an opening groove corresponding to the special-shaped metal part is respectively arranged at the top of each segment. The first through gauges to the fifth through gauges are respectively slidably arranged on the support frame.

[0042] In this technical solution, the first main arm, the second main arm and the second main arm are all made of square tubes through bending and stamping, and the connecting rod and the end rod are cylindrical structures, wherein the two ends of the end rod are respectively bent to be inserted into the first main arm and the second main arm. The top walls of the first main arm and the second main arm (the upward side walls after being placed in the first main arm clamp and the second main arm clamp) are processed with welding holes corresponding to the angles. Before assembly, the first main arm and the second main arm are respectively welded with handles and reinforcement plates in advance, and the handles and reinforcement plates are easy to position without the use of special tooling, thereby simplifying the overall structure of the welding tooling. During assembly, the connecting arm is first placed in the connecting arm clamp, and the first main arm and the second main arm are respectively fixed to the corresponding first main arm clamp and the second main arm clamp, toward the side close to the connecting arm. Push the first main arm clamp and the second main arm clamp, hold the first main arm and the second main arm against the two ends of the connecting arm respectively, then place the connecting rod on the connecting rod clamp, place the end rod on the end rod clamp, push the end rod clamp, insert the two ends of the end rod into the first main arm and the second main arm respectively, complete the assembly, and relatively fix the first main arm, the second main arm, the connecting rod, the connecting arm and the end rod. The assembly steps are clarified, thereby reducing the difficulty of positioning the special-shaped metal parts. After the first main arm, the second main arm, the connecting rod, the connecting arm and the end rod are fixed, they are continuously welded by an external welding device, and the two ends of the connecting rod, the connecting arm and the end rod are respectively welded to the first main arm and the second main arm, thereby improving work efficiency. After welding is completed, the shape, position and size of the special-shaped metal parts are detected by a checking fixture to avoid the outflow of defective products.

[0043] For example, see Figures 1 to 3 As shown, the first main arm clamp 6 includes a first slide seat 61 slidably arranged on the top surface of the first workbench and a first support seat 62, a second support seat 63, a third support seat 64, a fourth support seat 65 and a first clamping device 66 which are sequentially arranged on the top surface of the first slide seat 61, the side surfaces of the first support seat 62 and the fourth support seat 65 are respectively provided with a first positioning pin 621 and a second positioning pin 651 which are plugged into the first main arm 1, and the top ends of the second support seat 63 and the third support seat 64 are respectively provided with a first supporting groove and a second supporting groove which support the first main arm 1.

[0044] In this technical solution, when the first main arm is installed into the first main arm clamp, the holes on its two ends are respectively sleeved on the first locating pin and the second locating pin, and the corresponding middle part is embedded in the first supporting groove and the second supporting groove, and then the first clamping device abuts against the inner wall of the first main arm (close to the side wall of the second main arm) to completely fix the first main arm. The first support seat to the fourth support seat are respectively installed on the first slide seat through multiple mounting blocks, and a number of adjusting gaskets are arranged between adjacent mounting blocks. The adjusting gaskets are sheet structures and are processed with open U-shaped grooves. They can also be made into various specifications of different thicknesses similar to feeler gauges. Multiple pieces can be matched to meet the needs of different thickness adjustments. When disassembling and assembling, just loosen the corresponding bolts, and adjust the installation position of the first support seat to the fourth support seat by adjusting the gasket to improve the fit with the first arm and avoid interference, etc. The mounting blocks are conventional block-shaped, strip-shaped, or L-shaped structures.

[0045] For example, see Figures 1 to 3 As shown, the first clamping device 66 includes a first cylinder 661 arranged on the first slide seat 61 through a first cylinder seat and a first pressure rod 662 hinged to the piston rod of the first cylinder. The middle part of the first pressure rod 662 is hinged to the cylinder barrel of the first cylinder through a first connecting rod 663.

[0046] In this technical solution, the first cylinder seat is a conventional mounting seat, which can realize the installation of the first cylinder. The first cylinder can be an existing cylinder. Its piston rod is hinged to one end of the first pressure rod, and a conventional hinged seat is arranged on the top end of the cylinder barrel (the end extending from the piston rod) close to the fourth support seat. The middle of the first pressure rod in the length direction is hinged to the hinged seat through the first connecting rod. During the extension and retraction of the piston rod of the first cylinder, the first pressure rod is driven to rotate to realize the function of clamping and releasing the first main arm. The hinged seat is arranged on the first cylinder, which makes the structure more compact, reduces space occupancy, and facilitates the overall layout design.

[0047] For example, see Figures 1 to 4 As shown, a limiting rod 641 corresponding to the connecting rod 3 is provided on the side of the third supporting seat 64 .

[0048] In this technical solution, the limit rod is arranged on the side of the third support seat through a conventional connecting seat, and is coaxially arranged with the installation position of the connecting rod to limit the axial position of the connecting rod, that is, the limit rod serves as a positioning reference for the axial placement of the connecting rod, which is convenient for quick positioning; in order to avoid interference with the first main arm being installed into the second support groove of the third support seat, the connecting seat of the limit rod is provided with an articulated structure, and is equipped with a reset device such as a torsion spring, that is, the first main arm is installed, and the limit rod is manually rotated outward to avoid interference with the installation of the first main arm, and the corresponding part of the first main arm is embedded in the second support groove, and the limit rod is released, and the limit rod is reset under the action of the torsion spring.

[0049] For example, see Figures 1 to 4As shown, the second main arm clamp 7 is symmetrically arranged with the first main arm clamp 6, and a fifth support seat 70 and a pressing device 80 are arranged between the first main arm clamp 6 and the second main arm clamp 7, and support blocks corresponding to the first main arm 1 and the second main arm 2 are respectively arranged on both sides of the fifth support seat 70, and a positioning rod 90 slidingly passing through the first main arm 1, two support blocks and the second main arm 2 is arranged in the first main arm clamp 6 or the second main arm clamp 7, and the pressing device 80 includes a pressing cylinder 801 fixed to the first workbench and two pressing blocks 802 respectively connected to the piston rod of the pressing cylinder.

[0050] In this technical solution, the second main arm clamp has the same structure as the first main arm clamp, can fix the second main arm, and can slide along the first workbench. The first main arm clamp and the second main arm clamp are respectively slidably set on the top surface of the first workbench through conventional linear guide rails, and their outer sides are connected to the driving cylinder to drive the second main arm clamp to slide with the first main arm clamp. The fifth support seat and the pressing device do not interfere with the sliding of the first main arm clamp and the second main arm clamp. The outer side surfaces of the support blocks on the fifth support seat are respectively abutted against the inner side surfaces of the first main arm and the second main arm to provide support for the first main arm and the second main arm to avoid deformation, etc. The positioning rod slides through the first main arm, the two support blocks and the second main arm at the same time to improve the connection between the first main arm and the second main arm. In order to improve the positioning accuracy, a support platform for installing the first positioning rod is provided on the first main arm clamp or the second main arm clamp, a through hole for accommodating the first positioning rod to pass through is provided in the support platform, and a top screw is provided on the side wall of the through hole to fix the first positioning rod. Taking the first positioning rod set on the first main arm clamp as an example, before the first main arm is installed, the first positioning rod is taken out to avoid interfering with the installation of the first main arm. After the first main arm is installed, the first positioning rod is inserted and fixed by the top screw. When the first main arm clamp and the second main arm clamp slide relative to each other, the first positioning rod is inserted into the second main arm, or the first main arm and the second main arm are both in contact with the corresponding support blocks, and then the positioning rod is passed through the first main arm, the two support blocks and the second main arm in turn, and locked by the top screw.

[0051] For example, see Figure 1 and Figure 4 As shown, the connecting rod clamp 8 includes a sixth support seat 81 and a second clamping device 82 arranged on the first workbench, the top surface of the sixth support seat 81 is provided with a V-groove corresponding to the connecting rod 3, the second clamping device 82 includes a second cylinder arranged on the second sliding seat through a second cylinder seat and a second pressure rod hinged to the piston rod of the second cylinder, and the middle part of the second pressure rod is hinged to the cylinder barrel of the second cylinder through a second connecting rod.

[0052] In this technical solution, the structure of the second clamping device is the same as that of the first clamping device. The second pressure rod is driven by the second cylinder to act on the connecting rod, and the V-groove of the sixth support seat is cooperated to radially limit the connecting rod. The axial positioning of the connecting rod is achieved by the limiting rod.

[0053] For example, see Figures 1 to 3 As shown, the connecting arm fixture 9 includes two seventh support seats symmetrically arranged on the first workbench, and the top end of the seventh support seat is provided with a third support groove corresponding to the connecting arm 4.

[0054] In this technical solution, the seventh support seat is fixed to the top surface of the first workbench by means of mounting blocks and bolts, and the two third support grooves are determined according to the contour of the connecting arm and are used to place the connecting arm.

[0055] For example, see Figure 1 , Figure 5 and Figure 6 The end rod clamp 10 includes an eighth support seat 101 slidably arranged on the first workbench through a slide and a third clamping device 102 symmetrically arranged on both sides of the slide. The eighth support seat 101 includes two end support blocks 1011 corresponding to the corners of the end rod 5 and an intermediate support block 1012 arranged between the two end support blocks. The two end support blocks 1011 are respectively provided with L-shaped grooves corresponding to the end rod 5.

[0056] In this technical solution, the third clamping device has the same structure as the first clamping device, including a third cylinder and a hinged third pressure rod. After the end rod is placed on the two end support blocks, the piston rod of the third cylinder extends out, and drives the third pressure rod to abut against the surface of the corresponding end support block through the third connecting rod and the hinged seat, or is 1 to 2 mm apart from the end support block, so as not to interfere with the sliding of the eighth support seat with the slide. The slide is slidably arranged on the top surface of the first workbench through a conventional linear guide rail, and its end facing away from the first main arm and the second main arm is connected to a driving cylinder. The driving cylinder drives the eighth support seat to slide, thereby inserting the two ends of the end rod into the first main arm and the second main arm respectively, and the top surface of the middle support block is tangent to the surface of the end rod, providing support for the end rod.

[0057] For example, see Figure 7 As shown, the middle support block is movably abutted against the side surface of the connecting arm 4.

[0058] In this technical solution, a hook plate is welded in advance on the side of the connecting arm near the intermediate support block. After the slide plate drives the two ends of the end rod to insert into the first main arm and the second main arm, the intermediate support block abuts against the side of the connecting arm, thereby improving the stability and accuracy of the fixing of the connecting arm. In addition, a connecting column may be protruded from the side of the intermediate support block near the connecting arm. After the hook plate is hung on the connecting column, it moves with the eighth support seat and abuts against the side of the connecting arm, and then is welded and fixed.

[0059] For example, see Figure 1 As shown, a plurality of error-proofing switches are arranged on the first workbench.

[0060] In this technical solution, the error-proofing switch corresponds to the placement sequence of the first main arm, the second main arm, the connecting rod, the connecting arm and the end rod to avoid missing placement.

[0061] Before welding, place the connecting arm on the connecting arm fixture, and fix the first main arm and the second main arm on the corresponding first main arm fixture and the second main arm fixture respectively, turn on the corresponding error prevention switch, the first clamping device fixes the first main arm and the second main arm, turn on the corresponding error prevention switch, drive the cylinder to push the first main arm fixture and the second main arm fixture, hold the first main arm and the second main arm against the two ends of the connecting arm respectively, the piston rod of the downward pressing cylinder drives the two downward pressing blocks to press down, and press the first main arm and the second main arm respectively, place the connecting rod on the connecting rod fixture, turn on the corresponding error prevention switch, fix the connecting rod with the second clamping device, place the end rod on the end rod fixture, turn on the corresponding error prevention switch, fix the end rod with the third clamping device, drive the cylinder to push the end rod fixture, insert the two ends of the end rod into the first main arm and the second In the main arm, the welding device welds the two ends of the connecting rod, the connecting arm and the end rod to the first main arm and the second main arm respectively; the welded special-shaped metal parts are placed in the inspection fixture, and the first through gauge is pushed, and the first through gauge slides into the hook plate on the side of the connecting arm, and then the third through gauge, the fourth through gauge and the fifth through gauge on both sides are pushed in turn to detect the corresponding hole positions in the first main arm and the second main arm respectively. After the shape and position dimensions of the hole positions are qualified, the first through gauge is pulled out, and the two second through gauges are pushed, and the two second through gauges slide to the two ends of the hook plate respectively to detect the welding position of the hook plate. After the detection is completed, the second through gauge to the fifth through gauge are pulled out. There is interference between the first through gauge and the second through gauge, so the first through gauge and the third through gauge, the fourth through gauge and the fifth through gauge are used first. After the corresponding detection is completed, the first through gauge is withdrawn and then the second through gauge is used.

[0062] In summary, the production process of the special-shaped metal parts described in the production process of the special-shaped metal parts has clear production process steps and improves welding quality and efficiency.

[0063] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0064] The above description is only a specific implementation of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A production process for special-shaped metal parts, characterized in that: The method comprises a welding tool and a checking fixture, wherein the welding tool and the checking fixture are used to respectively weld and check a special-shaped metal part, wherein the special-shaped metal part comprises a first main arm and a second main arm which are symmetrically arranged, and a connecting rod, a connecting arm and an end rod which are connected between the first main arm and the second main arm, and comprises the following steps: S1. Place the connecting arm on a welding fixture, and use the welding fixture to fix the first main arm and the second main arm to the two ends of the connecting arm respectively, and then fix the connecting rod and the end rod to the corresponding positions between the first main arm and the second main arm respectively; S2, welding the connecting rod, the connecting arm and the two ends of the end rod to the first main arm and the second main arm respectively; S3. Detect the shape, position and dimensions of special-shaped metal parts; The welding tool comprises a first workbench arranged horizontally, a first main arm clamp and a second main arm clamp sliding relatively on the top surface of the first workbench, a connecting rod clamp and a connecting arm clamp arranged between the first main arm clamp and the second main arm clamp, and an end rod clamp slidingly arranged outside the connecting arm clamp; The inspection tool comprises a second workbench arranged horizontally, a support frame arranged on the top surface of the second workbench, and a first through gauge, a second through gauge, a third through gauge, a fourth through gauge and a fifth through gauge respectively slidably arranged on the support frame.

2. The production process of special-shaped metal parts according to claim 1, characterized in that: The first main arm clamp includes a first slide seat slidably arranged on the top surface of the first workbench and a first support seat, a second support seat, a third support seat, a fourth support seat and a first clamping device arranged in sequence on the top surface of the first slide seat, the side surfaces of the first support seat and the fourth support seat are respectively provided with a first positioning pin and a second positioning pin inserted into the first main arm, and the top ends of the second support seat and the third support seat are respectively provided with a first supporting groove and a second supporting groove supporting the first main arm.

3. The production process of special-shaped metal parts according to claim 2, characterized in that: The first clamping device comprises a first cylinder arranged on a first slide seat through a first cylinder seat and a first pressure rod hinged to a piston rod of the first cylinder, wherein the middle portion of the first pressure rod is hinged to a cylinder barrel of the first cylinder through a first connecting rod.

4. The production process of special-shaped metal parts according to claim 2, characterized in that: A limiting rod corresponding to the connecting rod is arranged on the side surface of the third supporting seat.

5. The production process of special-shaped metal parts according to claim 2, characterized in that: The second main arm clamp is symmetrically arranged with the first main arm clamp, and a fifth supporting seat and a pressing device are arranged between the first main arm clamp and the second main arm clamp, and supporting blocks corresponding to the first main arm and the second main arm are respectively arranged on both sides of the fifth supporting seat, and a positioning rod sliding through the first main arm, two supporting blocks and the second main arm is arranged in the first main arm clamp or the second main arm clamp, and the pressing device includes a pressing cylinder fixed to the first workbench and two pressing blocks respectively connected to the piston rod of the pressing cylinder.

6. The production process of special-shaped metal parts according to claim 1, characterized in that: The connecting rod clamp includes a sixth support seat arranged on the first workbench and a second clamping device, the top surface of the sixth support seat is provided with a V-groove corresponding to the connecting rod, the second clamping device includes a second cylinder arranged on the second sliding seat through a second cylinder seat and a second pressure rod hinged to the piston rod of the second cylinder, and the middle part of the second pressure rod is hinged to the cylinder barrel of the second cylinder through a second connecting rod.

7. The production process of special-shaped metal parts according to claim 1, characterized in that: The connecting arm fixture comprises two seventh supporting seats symmetrically arranged on the first workbench, and the top end of the seventh supporting seat is provided with a third supporting groove corresponding to the connecting arm.

8. The production process of special-shaped metal parts according to claim 1, characterized in that: The end rod clamp includes an eighth support seat slidably set on the first workbench through a slide and a third clamping device symmetrically set on both sides of the slide. The eighth support seat includes two end support blocks corresponding to the end rod corners respectively and an intermediate support block set between the two end support blocks. The two end support blocks are respectively provided with L-shaped grooves corresponding to the end rod.

9. The production process of special-shaped metal parts according to claim 8, characterized in that: The middle supporting block is movably abutted against the side surface of the connecting arm.

10. The production process of special-shaped metal parts according to claim 1, characterized in that: The first workbench is provided with a plurality of error-proofing switches.

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