Forming device and processing method of a special-shaped shell arranging channel

Abstract

The present application belongs to a kind of manufacturing, inspection technical field of special-shaped cavity, disclose a kind of forming device and processing method of special-shaped shell passage.The forming device includes mould, guide plate tooling, auxiliary sample plate and auxiliary tool;Through the above process improvement measures, the special-shaped shell passage of conveying slide is effectively controlled in the process of material preparation, welding, machining, greatly improves the manufacturing quality of conveying slide, and the qualified rate is improved from 25% to 100%.Solve the manufacturing, inspection problem of special-shaped cavity, provide process design ideas for the production of subsequent similar products.

Description

Technical Field

[0001] This invention relates to the field of manufacturing and inspection technology for irregularly shaped cavities, and more particularly to a forming device and processing method for irregularly shaped shell channels. Background Technology

[0002] The material conveyor slide of a certain specialized product is assembled and welded from multiple 35# carbon structural steel parts. It has a compact structure, complex shape, and high requirements for form and position tolerances, resulting in significant deformation during welding and easy deformation during machining. In the manufacturing process of the material conveyor slide, the ejection channel is crucial, being one of the key factors determining whether the cartridge cases can pass smoothly. Because the ejection channel is an irregularly shaped cavity, entirely composed of spatial dimensions, it is difficult to manufacture during production. It is impossible to measure specific values ​​at fixed points during assembly and welding to ensure dimensional accuracy. Therefore, during testing, discrepancies in channel dimensions often cause ejection problems, severely restricting production and increasing testing costs and difficulty. Summary of the Invention

[0003] The purpose of this invention is to provide a forming device and processing method for irregularly shaped shell channels. The manufacturing process utilizes four newly designed parts forming fixtures, two sets of channel control fixtures during assembly and welding, and one set of channel inspection fixtures for each stage of production. The tooling used in this invention can solve problems such as manufacturing accuracy and inspection difficulties in the manufacturing of irregularly shaped cavity parts, thereby improving the accuracy of part shape, increasing assembly and welding precision, and facilitating inspection. This technical solution is scalable and can be applied to the manufacturing of complex irregularly shaped cavity parts.

[0004] The technical solution of the present invention is as follows: a forming device for an irregular shell-laying channel, the irregular shell-laying channel including a guide plate 1, an upper guard plate 2 and a right side guard plate 3;

[0005] The guide plate 1 is an irregular curved surface; the upper guard plate 2 is composed of two arc segments joined together.

[0006] The upper guard plate 2 and the right guard plate 3 are respectively made by cutting materials with a CNC flame cutting machine, bending them with a press, processing them, and finishing them according to the unfolded dimensions.

[0007] The forming device includes a jig, a guide plate tooling, auxiliary templates, and auxiliary tools;

[0008] The guide plate 1 is manufactured by a combination of a fixture and a guide plate tooling.

[0009] The fixture includes an upper mold and a lower mold. The upper mold is fitted onto the press, and the lower mold is placed above the press platform. After the upper and lower molds are fitted together, an initial guide plate is formed. The guide plate fixture includes a flat plate and an arc-shaped shell. The arc-shaped shell is located on the flat plate, and the outer surface of the arc-shaped shell fits with the inner arc surface of the guide plate 1. The inner arc surface of the initial guide plate is attached to the arc-shaped shell. The accuracy of its peripheral contour relative to the central arc position is judged. After meeting the requirements, it is spot-welded to the guide plate fixture for machining and control of its external dimensions.

[0010] After the upper guard plate 2 and the right guard plate 3 are spot welded together, the correctness of the upper guard plate 2 assembly is checked by the auxiliary template; the inner arc surface of the auxiliary template matches the outer arc surface of the welded upper guard plate 2 and the right guard plate 3; the guide plate 1 is positioned on the corresponding position on the upper guard plate 2 and the right guard plate 3 by the auxiliary tool.

[0011] The auxiliary tool includes a steel bracket 5, a reference plate 8, and an insert plate 7; the entire irregular shell channel is divided into 13 units, and each unit uses the insert plate 7 to check the position of the guide plate 1; the shape of the insert plate 7 is designed according to the inner arc surface of the guide plate 1 after accurate welding and the corresponding position.

[0012] The steel bracket 5 is composed of angle steel of the same size welded together. The bottom and all sides of the steel bracket 5 are welded with measuring reference blocks 4 for reference measurement. The steel bracket 5 is machined with fitting holes, and the fitting reference plate 8 is installed on the top of the steel bracket 5 through the fitting holes. The reference blocks are machined with the fitting reference plate 8 as the reference. The fitting reference plate 8 is provided with several insertion slots, and the insertion plate 7 is inserted into the steel bracket 5 through the insertion slots to guide the position of the guide plate 1.

[0013] The steel support 5 is arranged around the irregular shell channel.

[0014] A method for processing a forming device for irregularly shaped shell channels includes the following steps:

[0015] Step 1: Prepare materials;

[0016] Manufacturing process of guide plate 1: Cutting material according to the unfolded drawing dimensions using a CNC flame cutting machine - bending with a press - machining - finished product; First, draw the planar unfolded drawing of the part according to the guide plate drawing, leaving a 20mm machining allowance around the unfolded drawing, and then cut the material. After cutting, clean the burrs around the steel plate, and then use a press to level it before bending; When bending, use an 800T press. Put the upper die onto the upper die of the press, and place the lower die on the lower platform of the press. Adjust the position of the upper and lower dies by moving the press up and down, and then fix them before bending.

[0017] The curved rear guide plate 1 is machined around its perimeter to ensure the correct position of the arc and the perimeter. The machining is carried out using a vertical machining tool. First, the guide plate 1 is placed on the guide plate fixture. The arc of the guide plate matches the arc of the arc shell. Adjust each part to ensure that the gap at each place is less than 2mm. Spot welding is then performed. Spot weld 15-20mm long sections at the center position of the two short sides, and spot weld 3 sections 15mm long on one long side. The spot welding material is H08Mn2Siφ2, and the spot welding current is 100-150A.

[0018] After spot welding is completed, the guide plate fixture is attached to the machine tool bed, aligned and positioned according to the auxiliary tool, and the shape is machined. During the machining process, the welding is ground with a grinding wheel and then removed by tapping with a copper rod, in preparation for use in assembly welding.

[0019] Manufacturing process of upper guard plate 2: Cutting is performed using a CNC flame cutting machine according to the unfolded dimensions—curving is done using a press—machining—finished product; A planar unfolded drawing of the part is drawn according to the design drawings, leaving a 10mm machining allowance around the unfolded drawing. After cutting, the burrs around the steel plate are cleaned, and it is leveled using a press before being curved. The curve is formed using an 800T press, with the pressing points controlled within the range of 10-15mm. During the pressing process, a complete template is used for multiple inspections; After curving, machining is performed, ensuring the correctness of the intersection of the two arcs during machining. After machining, it is ready for welding.

[0020] Manufacturing process of right side guard plate 3: Cutting material according to the unfolded dimensions using a CNC flame cutting machine—bending shape using a press—machining—finished product; Draw the unfolded planar drawing of the part according to the design drawings, leaving a 10mm machining allowance around the unfolded drawing, and cut the material. After cutting, clean the burrs around the steel plate, level it using a press, and then bend it. The bending shape is formed using an 800T press, and an overall template is used for inspection during the pressing process; After bending, machining is carried out. When machining and marking, the lines are measured and marked according to the template, and machining is carried out according to the lines. After machining, it is ready to participate in welding;

[0021] Step 2: Assembly and welding;

[0022] First, assemble the upper guard plate 2 and the right guard plate 3 according to the dimensions in the drawing. After assembly, check the correctness of the assembly. Then, assemble the guide plate 1. First, place the guide plate 1 into the cavity to be assembled. Place the steel brackets 5 around the irregular shell channel. The placement dimensions of the steel brackets 5 are measured with the bottom plate as the reference. Place the insert plates 7 in the marked order. During the placement process, adjust the position of the guide plate 1 at any time to make it conform to the dimensions of the template. After all the insert plates 7 are inspected and the position of the guide plate 1 is fixed, spot welding is performed. After spot welding, welding is performed. The auxiliary tool is used to measure before and after welding.

[0023] Step 3: Machining and polishing;

[0024] The irregularly shaped shell-discharging channel is machined according to the machining process. After semi-finishing according to the process requirements, the irregularly shaped shell-discharging channel is polished and its shape conformity is checked. During the semi-finishing process, the positioning dimensions of the component after welding in step two are machined. The machining is carried out with the center of the part that has already been machined as the reference. After the positioning reference is machined, the positioning pin hole 6 is machined. The positioning pin hole 6 is also positioned according to the machined center and machined on the machined pressure block. The machined pressure block is the positioning reference block used for clamping during the machining process. It is removed after machining. After the component after welding in step two is placed according to the machined reference block, the shell-discharging channel is polished and inspected.

[0025] After completing the above steps, you will obtain a qualified physical part.

[0026] The beneficial effects of this invention are as follows: Through the above-mentioned process improvement measures, the irregular shell discharge channel of the conveying slide plate is effectively controlled during the material preparation, welding, and machining processes, which greatly improves the manufacturing quality of the conveying slide plate and increases the pass rate from the original 25% to 100%. It solves the manufacturing and inspection problems of irregular cavities and provides process design ideas for the production of similar products in the future. Attached Figure Description

[0027] Figure 1 This is a typical part outline drawing;

[0028] Figure 2 Diagram showing the assembly of the guide plate curved auxiliary fixture;

[0029] Figure 3 Upper mold for guide plate curved auxiliary fixture;

[0030] Figure 4 The lower mold for the guide plate curved auxiliary fixture;

[0031] Figures 5(a)-5(b) Schematic diagrams of the tooling for machining guide plates from different perspectives;

[0032] Figure 5(c) is a three-dimensional schematic diagram of the guide plate machining fixture;

[0033] Figure 6 This is a sample of the upper protective panel;

[0034] Figure 7 This is a sample of the right side panel;

[0035] Figure 8 Welding inspection templates for the shell discharge channel;

[0036] Figure 9 Welding auxiliary fixtures and brackets for the shell discharge channel;

[0037] Figures 10(a)-10(b) A schematic diagram of the welding auxiliary fixtures for the shell discharge channel and the assembly of the reference plate;

[0038] Figure 11 Diagram showing the use of welding fixtures for the shell discharge channel;

[0039] Figures 12(a)-12(b) Schematic diagram of machining the positioning datum for the shell discharge channel inspection template;

[0040] Figure 13 Machining drawing for the positioning holes of the inspection template for the shell discharge channel;

[0041] Figure 14 This is a diagram showing the use of a sample for inspecting the shell discharge channel.

[0042] In the diagram: 1-Guide plate; 2-Upper guard plate; 3-Right side guard plate; 4-Measuring reference block; 5-Steel bracket; 6-Positioning pin hole; 7-Insertion plate; 8-Closing reference plate. Detailed Implementation

[0043] Part 1: Ensuring the Manufacturing Precision of Components Composing the Irregularly Shaped Cavity

[0044] The irregular cavity is mainly composed of three parts, see [link / reference] Figure 1 These are guide plate 1, upper guard plate 2, and right side guard plate 3. Among them, guide plate 1 is an important part and also the most difficult to manufacture. The manufacturing process of each of the three parts is described below.

[0045] 1. Manufacturing process of guide plate

[0046] The manufacturing challenge of the guide plate lies in ensuring the accuracy of the arc relative to the external dimensions during bending and post-forming processing. Therefore, specialized jigs are designed for manufacturing during the bending and processing stages.

[0047] The fixture mainly consists of an upper mold and a lower mold. See below. Figure 2 The upper die is attached to the press, and the lower die is placed on top of the press platform. (See upper die...) Figure 3 See lower mold. Figure 4 .

[0048] After the guide plate 1 is shaped, its periphery is machined. The difficulty in machining lies in the accuracy of the peripheral contour relative to the central arc position. To solve this problem, a guide plate fixture is made, as shown in Figure 5, to inspect and machine the guide plate, ensuring that the shape and size of the guide plate meet the drawing requirements. The guide plate fixture is made of thick steel plate or forging. The fixture body has the same arc as the inner side of the guide plate, and a machine tool chuck is provided at the bottom for easy clamping. The upper part is the guide plate mounting area. The guide plate 1 is spot-welded to the fixture body, and then the guide plate is machined according to the program to control its external dimensions.

[0049] 2. Manufacturing process of the upper guard plate

[0050] Upper guard plate manufacturing process: Cutting material according to the unfolded dimensions using a CNC flame cutting machine—curving using a press—machining—finished product. A template (such as...) is used during the curving and machining marking processes. Figure 7 Measurements are taken to ensure the correctness of the arc position.

[0051] 3. Manufacturing process of the right side guard plate

[0052] Manufacturing process of the right side panel: Cutting is performed using a CNC flame cutting machine according to the unfolded dimensions—curving is done using a press—machining—finished product. A template (such as...) is used during the curving and machining marking processes. Figure 7 Measurements are taken to ensure the correctness of the arc position.

[0053] Part Two: Control of the Welding Process

[0054] Strict quality control was implemented in the manufacturing processes of guide plate 1, upper guard plate 2, and right side guard plate 3, resulting in a significant improvement in product manufacturing quality. However, relying solely on the conformity of parts manufacturing could not fully meet the shape and dimensional requirements after assembly and welding. The assembly and welding drawings did not explicitly specify the assembly and welding dimensions for the guide plate; all dimensions were spatial and immeasurable. Therefore, even slight differences in assembly position could affect the channel's dimensions. Thus, ensuring that the shape and dimensions of the entire channel meet design requirements during assembly and welding was a problem that needed to be solved. Based on these reasons, assembly and welding fixtures and templates were manufactured to ensure the accuracy of the channel's assembly and welding position, shape, and dimensions.

[0055] Based on the product structure, first use a template to check the correctness of the upper guard plate assembly and welding. See [link / reference]. Figure 8 Then, the guide plate is assembled, and the auxiliary fixture uses a steel bracket ( Figure 9 The reference plate (Figure 10(a) and Figure 10(b)) and insert plate are fabricated. The entire shell-laying channel is divided into 13 units, and each unit is inspected using an insert plate. The auxiliary tooling manufacturing process: The steel frame is constructed from 50*50*5 angle steel welded together, and measuring reference blocks are welded to the bottom and around the perimeter of the steel frame for reference measurement. During the processing of the steel frame, the fitting holes are first machined. After the reference plate is fabricated, it is fitted and fixed onto the pre-welded angle steel frame. Reference blocks are installed at the bottom and in two directions of the frame. The reference blocks are machined with the fitted reference plate as a reference to ensure the correct position of the reference blocks relative to the reference plate. In use, the inspection template is placed in sequence according to the insertion holes of the reference plate. The above-mentioned auxiliary tooling is placed according to the reference dimensions in the drawings. (See [reference]). Figure 11 Ensure that the assembly dimensions meet the requirements of the drawings.

[0056] Part Three: Inspection of the Exhaust Casing Channel After Machining

[0057] The product requires inspection of the discharge channel after semi-finishing. Inspection tools are made for inspection. Similarly, the entire discharge channel is divided into 13 units along the discharge direction. A plate is inserted into each unit to check the conformity of the shape of the material conveying slide discharge channel. The reference plate is machined and fixed to the discharge channel with screws (Figure 12(a) and Figure 12(b)), as shown in Figure (13). The plate is used for measurement (Figure 14).

[0058] This invention is widely applicable, and the size and shape of irregularly shaped welded parts are well controlled, meeting welding tolerance requirements. It can meet drawing requirements without additional processing, saving machining costs. At the same time, the inspection method is simple and easy to operate. Compared with laser scanning, it is lower in cost and easier to operate and grind.

[0059] The specific scheme for controlling and researching irregularly shaped shell-laying channels is explained below:

[0060] The manufacturing process of welded parts is as follows: blanking and forming - individual part processing - welding - heat treatment - machining - grinding in a clamp. Therefore, effective control is carried out in each manufacturing process of welded parts, so that the manufactured products are qualified products. First is the preparation process of individual parts. As can be seen from Figure (1), the three important parts that make up the shell channel are all curved parts, especially the guide plate, which is a spatial irregular part. It cannot be formed by ordinary press, and a separate mold needs to be made for curvature.

[0061] First step: Material preparation

[0062] Guide plate manufacturing process: Cutting is performed using a CNC flame cutting machine according to the unfolded dimensions – bending is done using a press – machining – finished product. First, a planar unfolded drawing of the part is drawn based on the guide plate drawing, leaving a 20mm machining allowance around the edges. Nesting is performed using programming software, and the nesting program is then transmitted to the cutting machine for cutting. After cutting, burrs around the steel plate are cleaned, and the plate is leveled using a press before bending. An 800T press is used for bending. The upper die is fitted onto the upper die of the press, and the lower die is placed on the lower platform of the press. The positions of the upper and lower dies are adjusted by the up-and-down movement of the press and then fixed before bending.

[0063] The curved rear guide plate undergoes peripheral machining to ensure the correct position of the arc and the periphery. The machining is carried out using a vertical machining tool. First, the guide plate is placed on the machining fixture, and the arc of the guide plate matches the arc of the jig. Adjust all parts to ensure that the gap at each point is less than 2mm. Spot welding is then performed. Spot weld 15-20mm long sections at the center position of the two short sides, and spot weld 3 sections of 15mm long sections on one long side. The spot welding material is H08Mn2Siφ2, and the current is 100-150A.

[0064] After spot welding, attach the auxiliary fixture to the machine tool bed, align and position it according to the fixture, and machine the shape according to the program. When removing the machined parts, use a grinding wheel and cutting disc, taking care to protect the parts and fixture, minimizing damage to the fixture. During grinding, use a copper rod to tap the parts for easier removal. After all processes are completed, prepare for assembly welding.

[0065] Manufacturing process of the upper guard plate: Cutting is performed using a CNC flame cutting machine according to the unfolded dimensions—curving is done using a press—machining—finished product. Similarly, a planar unfolded drawing of the part is drawn according to the design drawings, leaving a 10mm machining allowance around the edges. Nesting is performed using programming software, and the nesting program is input into the cutting machine for cutting. After cutting, burrs around the steel plate are cleaned, and it is leveled using a press before curving. The curvature is formed using an 800T press, with the pressing points controlled within the 10-15mm range. During the pressing process, a complete template is used for multiple checks. After curvature, machining is performed, and a template is used for marking. Figure 6 Measurements are taken to ensure the correctness of the intersection of the two arcs, and the machining is completed before it is ready for welding.

[0066] Manufacturing process of the right side guard plate: Cutting is performed using a CNC flame cutting machine according to the unfolded dimensions—curving is done using a press—machining—finished product. Similarly, a planar unfolded drawing of the part is drawn according to the design drawings, leaving a 10mm machining allowance around the edges. Nesting is performed using programming software, and the nesting program is input into the cutting machine for cutting. After cutting, burrs around the steel plate are cleaned, and the plate is leveled using a press before curving. The curvature is formed using an 800T press. When drawing the curvature, the outer dimensions of the part must be accurately measured to ensure the correct position of the curvature lines. A complete template is used for inspection during the pressing process. After curvature, machining is performed, and a template is used for marking during machining. Figure 7 ) Perform measurements and markings, process according to the lines, and prepare for welding after processing.

[0067] The second process: welding

[0068] After the parts are manufactured, they are assembled, and all assembly is completed on the assembly platform. Assembly begins with the upper and right side guard plates, following the dimensions in the drawings. Once assembled, they are ready for use. Figure 8 First, verify the correctness of the assembly, then assemble the guide plate. Place the guide plate into the cavity to be assembled, and then place the steel bracket. The dimensions of the steel bracket are measured using the base plate as a reference. After drawing lines, place the brackets according to the lines. Place the insert plates in the marked order, adjusting the position of the guide plate as needed to ensure it conforms to the template dimensions. After all insert plates have been inspected and the guide plate position is fixed, perform spot welding. After spot welding, perform full welding. This auxiliary tool can be used for measurement before and after welding.

[0069] The third process: machining and polishing

[0070] The material conveyor slide is machined according to the machining process. After semi-finishing according to the process requirements, the shell discharge channel is polished and its shape conformity is checked. During the semi-finishing process, the positioning dimensions of the inspection template are referenced (Figure 12). Machining is performed with the center of the already machined part as the reference. After machining the positioning reference, the positioning pin holes are machined, as shown in (Figure 12). Figure 13 The pin holes are also positioned according to the center of the machining in the drawing and machined on the machined pressure block (the machined pressure block is a positioning reference block used for mounting during the machining process and is removed after machining). After placing the inspection template (14) according to the machined reference, the shell discharge channel is polished and inspected.

[0071] After completing the above steps, you will obtain a qualified physical part.

Claims

1. A forming apparatus for a shaped channel of irregularly shaped shells, characterized in that, The irregular shell-laying channel includes a guide plate (1), an upper protective plate (2), and a right protective plate (3); The guide plate (1) is an irregular curved surface; the upper guard plate (2) is composed of two arc segments spliced ​​together; The upper guard plate (2) and the right guard plate (3) are respectively made by cutting material with a CNC flame cutting machine, bending shape with a press, processing and finishing according to the unfolded dimensions; The forming device includes a jig, a guide plate tooling, auxiliary templates, and auxiliary tools; The guide plate (1) is manufactured by means of a fixture and a guide plate tooling; The fixture includes an upper mold and a lower mold. The upper mold is attached to the press, and the lower mold is placed above the press platform. After the upper mold and the lower mold are fitted together, an initial guide plate is formed. The guide plate fixture includes a flat plate and an arc shell. The arc shell is located on the flat plate, and the outer surface of the arc shell fits with the inner arc surface of the guide plate (1). The inner arc surface of the initial guide plate is attached to the arc shell. The accuracy of its peripheral contour relative to the central arc position is judged. After meeting the requirements, it is spot welded to the guide plate fixture to process and control its external dimensions. After the upper guard plate (2) and the right guard plate (3) are spot welded together, the correctness of the welding of the upper guard plate (2) is checked by the auxiliary template; the inner arc surface of the auxiliary template matches the outer arc surface of the welded upper guard plate (2) and the right guard plate (3); the guide plate (1) is positioned on the corresponding position on the upper guard plate (2) and the right guard plate (3) by the auxiliary tool; The auxiliary tool includes a steel bracket (5), a reference plate (8), and a insert plate (7); the entire irregular shell channel is divided into 13 units, and the insert plate (7) is used in each unit to check the position of the guide plate (1); the shape of the insert plate (7) is designed according to the inner arc surface of the guide plate (1) after accurate welding and the corresponding position; The steel bracket (5) is made of angle steel of the same size welded together. The bottom and the sides of the steel bracket (5) are welded with measuring reference blocks (4) for reference measurement. The steel bracket (5) is machined with fitting holes, and the fitting reference plate (8) is installed on the top of the steel bracket (5) through the fitting holes. The reference blocks are machined with the fitting reference plate (8) as the reference. Several slots are provided on the fitting reference plate (8), and the insert plate (7) is inserted into the steel bracket (5) through the slots to guide the position of the guide plate (1). The steel bracket (5) is arranged around the irregular shell channel.

2. A method of processing using the forming apparatus of claim 1, characterized by, The steps include the following: Step 1: Prepare materials; Guide plate (1) manufacturing process: cut the material according to the unfolded drawing size using a CNC flame cutting machine - press bending - processing - finished product; First, draw the planar unfolded drawing of the part according to the guide plate drawing. Leave a 20mm machining allowance around the unfolded drawing and cut the material. After cutting, clean the burrs around the steel plate and use a press to level it before bending; When bending, use an 800T press. Put the upper mold on the upper die of the press and place the lower mold on the lower platform of the press. Adjust the position of the upper mold and the lower mold by moving the press up and down and then fix it before bending. The curved rear guide plate (1) is machined around its perimeter to ensure the correct position of the arc and the perimeter. The machining is performed using a vertical machining tool. First, the guide plate (1) is placed on the guide plate fixture. The arc of the guide plate matches the arc of the arc shell. Adjust each part to ensure that the gap at each place is less than 2mm. Spot welding is then performed. Spot weld 15-20mm long sections at the center of the two short sides and spot weld 3 sections 15mm long on one long side. The spot welding material is H08Mn2Si. Spot welding current: 100-150A; After spot welding is completed, the guide plate fixture is attached to the machine tool bed, aligned and positioned according to the auxiliary tool, and the shape is machined. During the machining process, the welding is ground with a grinding wheel and then removed by tapping with a copper rod, in preparation for use in assembly welding. The manufacturing process of the upper guard plate (2) is as follows: the part is cut into shape using a CNC flame cutting machine according to the size of the unfolded drawing, and then curved using a press. The part is then cut into shape according to the design drawings. A 10mm machining allowance is left around the unfolded drawing. After cutting, the burrs around the steel plate are cleaned. The plate is then leveled using a press and then curved. The curved shape is formed using an 800T press. The pressing point is controlled within the range of 10-15mm. The overall template is used for inspection multiple times during the pressing process. After the curved shape is formed, the part is processed. When marking the lines, the correctness of the intersection of the two arcs is ensured. After processing, the part is ready to participate in the welding. The manufacturing process of the right side guard plate (3) is as follows: cut the material according to the size of the unfolded drawing using a CNC flame cutting machine, bend the shape using a press, process the material, and finish the product. Draw the unfolded drawing of the part according to the design drawings, leave a 10mm processing allowance around the unfolded drawing, cut the material, clean the burrs around the steel plate after cutting, level it with a press, and then bend it. The bend is formed by pressing with an 800T press. During the pressing process, an overall template is used for inspection. After the bend is formed, process the material. When processing the marking lines, measure and mark the lines according to the template, process the material according to the lines, and prepare it for welding after processing. Step 2: Assembly and welding; First, assemble the upper guard plate (2) and the right guard plate (3) according to the dimensions in the drawing. After the assembly is completed, check the correctness of the assembly. Then, assemble the guide plate (1). First, put the guide plate (1) into the cavity to be assembled. Place the steel bracket (5) around the irregular shell channel. The placement dimensions of the steel bracket (5) are measured with the bottom plate as the reference. Place the insert plates (7) in the marked order. During the placement process, adjust the position of the guide plate (1) at any time to make it conform to the size of the template. After all the insert plates (7) are inspected, fix the position of the guide plate (1) and spot weld it. After spot welding is completed, weld it. The auxiliary tool is used to measure before and after welding. Step 3: Machining and polishing; The irregular shell channel is machined according to the machining process. After semi-finishing according to the process requirements, the irregular shell channel is polished and its shape conformity is checked. During the semi-finishing process, the positioning dimensions of the component after welding in step two are processed. The center of the part that has been machined is used as the reference for processing. After the positioning reference is processed, the positioning pin hole (6) is processed. The positioning pin hole (6) is also positioned according to the center of the machining and machined on the machined pressure block. The machined pressure block is the positioning reference block used for clamping during the machining process. It is removed after the machining is completed. After the component after welding in step two is placed according to the processed reference block, the shell channel is polished and inspected. After completing the above steps, you will obtain a qualified physical part.

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