A clamping device for narrow and thin long strip parts and a batch processing method

Abstract

A clamping device and batch processing method for narrow, thin, long strip parts. The clamping device includes a base plate, a pressure plate, and left and right side supports. The base plate includes left and right vertical plates and a bottom cross plate. A boss is provided in the middle of the top surface of the bottom cross plate. The axis of the boss in the length direction is parallel to the left and right vertical plates. Left and right supports are respectively provided between the left and right vertical plates and the boss. A part blank is sandwiched between the left and right supports. The width of the boss is less than the width of the part blank. The batch processing method includes first correcting, annealing, cutting, and polishing the raw steel plate to obtain the part blank. The part blanks are stacked and clamped between the left and right side supports. The pressure plate is used to provide axial compression to the part blanks. Then, one side support is removed and the single-side part blank is processed. Then, the other side is installed, the original support is removed, and the other side part blank is processed. This operation is repeated, milling the part blank layer by layer to reduce stress and lateral bending. This design not only has a small tolerance but also has high production efficiency.

Description

Technical Field

[0001] The invention relates to a parts clamping device, belongs to the field of mechanical processing, and in particular to a narrow and thin long strip parts clamping device and a batch processing method. Background Art

[0002] The variable Mach number nozzle adopts a two-dimensional surface rotation scheme to achieve Mach number changes, providing the required flow field conditions for the wind tunnel test section; the nozzle body is composed of various components. The lower part of the key part template is the aerodynamic surface. In order to ensure that the deformation of the surface in the high-temperature gas flow field meets the requirements, a cooling water trough is designed on the back side of the aerodynamic surface of the template. It serves as the inlet and outlet channel for cooling water to cool the flow channel surface when the nozzle is working.

[0003] The cooling water troughs are multiple rectangular hollow strips with a length greater than 2m and a width of 10mm. The sides and bottom of each water trough are milled to form an opening. After a 5mm thick stainless steel skin of the same length as the water trough is assembled at the water trough opening, the skin is laser welded to the template body to form a single body, thereby forming multiple closed cooling water channels at the bottom of the template. To reduce the defects of laser welding, the assembly tolerances of the long strip skin and the two sides of the water trough must be highly matched. For such narrow and thin long metal parts with high dimensional tolerance requirements, the relevant manufacturing process technology usually adopts steel plate blanks through flame cutting, laser cutting, wire cutting and other process methods to form them. However, the following defects still exist during the processing:

[0004] Long strip parts processed using the above process method will naturally form large side bends and lateral bends due to the stress release of the steel plate, resulting in a large tolerance between the length and width of the formed parts. However, when processing long strip parts by single-piece milling on a machine tool, the side bends and lateral bends of the long strip parts cannot be eliminated, and can only be processed in single pieces. For large-scale processing, the production efficiency is low.

[0005] The information disclosed in this background technology section is only intended to increase understanding of the overall background of the application and should not be considered as an admission or any form of suggestion that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the Invention

[0006] The purpose of the present invention is to overcome the defects and problems of the prior art in that long strip parts have large tolerances and low production efficiency, and to provide a narrow and thin long strip parts clamping device and batch processing method with small tolerances and high production efficiency.

[0007] To achieve the above objectives, the technical solution of the present invention is: a narrow and thin long strip parts clamping device, the clamping device includes a base plate, a pressure plate, a left support and a right support;

[0008] The bottom plate includes a left vertical plate, a right vertical plate and a bottom horizontal plate; the two sides of the bottom horizontal plate are respectively connected to the left vertical plate and the right vertical plate; the left vertical plate, the right vertical plate and the bottom horizontal plate are surrounded by a groove with an open top surface; a boss is provided in the middle of the top surface of the bottom horizontal plate, and the axis of the boss in the longitudinal direction is parallel to the left vertical plate and the right vertical plate;

[0009] A left support is provided between the left vertical plate and the boss, and a right support is provided between the right vertical plate and the boss; a part blank is sandwiched between the left support and the right support, and the width of the boss is smaller than the width of the part blank;

[0010] The pressing plate includes a pressing plate top surface, a pressing plate bottom surface, a pressing plate left surface and a pressing plate right surface; a first protrusion is provided on one side of the pressing plate bottom surface, and a second protrusion is provided on the other side of the pressing plate bottom surface.

[0011] The upper portion of the left vertical plate is provided with a plurality of left through holes, and the upper portion of the right vertical plate is provided with a plurality of right through holes; the left through holes penetrate the left outer surface and the left inner surface of the left vertical plate, and the right through holes penetrate the right outer surface and the right inner surface of the right vertical plate; the axes of the left through holes and the right through holes are in a straight line;

[0012] A second bolt is passed through the left through hole, and a third bolt is passed through the right through hole.

[0013] A plurality of bottom plate left through holes are provided on the bottom transverse plate between the left vertical plate and the left support, and a plurality of bottom plate right through holes are provided on the bottom transverse plate between the right vertical plate and the right support; the left bottom plate through hole is located between two adjacent left through holes, and the right bottom plate through hole is located between two adjacent right through holes; the axes of the left bottom plate through holes and the right bottom plate through holes are in a straight line;

[0014] A pressure plate through hole is opened on the top surface of the pressure plate toward the bottom surface of the pressure plate; a first bolt is passed through the pressure plate through hole, and the distance between the left wall and the right wall of the pressure plate of the pressure plate through hole is greater than the screw diameter of the first bolt.

[0015] The distance between the first protrusion and the second protrusion is greater than the distance between the left inner facade and the boss and less than the distance between the left outer facade and the boss;

[0016] The distance between the first protrusion and the second protrusion is greater than the distance between the right inner facade and the boss and smaller than the distance between the right outer facade and the boss.

[0017] A method for batch processing narrow, thin, and long strip parts using a narrow, thin, and long strip part clamping device, the method comprising the following steps:

[0018] Step 1: pre-treating the raw steel plate, wherein the pre-treatment includes pressing and correction, annealing heat treatment, cutting, and grinding to obtain a part blank, wherein the outer contour of the part blank is larger than that of the formed part;

[0019] Step 2: First, fix the left support to the bottom horizontal plate between the boss and the left vertical plate, then stack several part blanks and place them on the boss, and finally adjust the side surfaces of the stacked part blanks until their side flatness meets the requirements; at this point, one side of the part blank is in contact with the left support, and the left support does not contact the boss;

[0020] Step 3: Move the right support close to the left support and securely connect it to the bottom horizontal plate between the boss and the right vertical plate to clamp the part blank. At this point, the other side of the part blank is in contact with the right support, and the right support does not contact the boss. The clamping goal is that the lateral bending value of the part blank is less than the single-side machining allowance value.

[0021] Step 4: Place the pressing plate against the top surface of the part blank to provide axial pressing force to the part blank until the first protrusion fits with the top surface of the left vertical plate and the second protrusion fits with the top surface of the part blank;

[0022] Step 5. Remove the right support. At this point, the left support fits against one side of the part blank, providing side support for the part blank. Then, mill the side of the part blank without side support. The milling thickness is less than the single-side machining allowance.

[0023] Step 6: First, fix the right support to the bottom horizontal plate between the boss and the right vertical plate, then remove the left support and the pressure plate, and finally adjust the side of the stacked part blanks until their side flatness meets the requirements; at this point, the right support fits in with the processed side of the part blank, providing lateral support for the part blank;

[0024] Step 7: Place the pressing plate against the top surface of the part blank to provide axial pressing force to the part blank until the first protrusion fits with the top surface of the right vertical plate and the second protrusion fits with the top surface of the part blank;

[0025] Step 8: Mill the side of the part blank without side support, and the milling thickness is less than the single-side machining allowance;

[0026] Step 9. Repeat steps 3 to 8 until a molded part is obtained.

[0027] In the step 1, the method of pressing and correcting the raw steel plate is: using a hydraulic press to press the raw steel plate along the length direction; the overall flatness target requirement is: overall flatness ≤ 3mm.

[0028] In the step 1, the annealing heat setting treatment is performed by placing the pressed raw steel plate into an annealing device at an annealing temperature of 600° C. to 650° C. for 6 to 8 hours.

[0029] In step 1, the cutting method includes any one of the following:

[0030] The first type: laser cutting, cutting speed: 4500mm / min-5200mm / min; cutting gas: oxygen; cutting pulse frequency: ≥5000Hz;

[0031] The second type: wire cutting, the cutting material is: molybdenum wire with a diameter of ≤0.3mm; the cutting speed is: 20mm / min-40mm / min.

[0032] In step 2 and step 6, the side surface flatness requirement is: side surface flatness ≤ 0.05 mm.

[0033] In step five and step eight, the milling method is: using a carbide milling cutter for milling, the milling thickness is ≤0.5mm; the blade length of the carbide milling cutter is greater than the total height of the stacked part blanks, and the diameter of the carbide milling cutter is smaller than the width from the part blank to the left vertical plate and the right vertical plate.

[0034] In the step nine, the size of the molded part is: the length of the part> the length of the left support and the length of the right support, and the length:width of the part ≥ 200:1.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. In a narrow and thin long strip parts clamping device and batch processing method of the present invention, the clamping device includes a bottom plate, a pressure plate, a left support and a right support, the bottom plate includes left and right vertical plates and a bottom horizontal plate, and is surrounded to form a groove with an opening on the top surface, a boss is provided in the middle of the top surface of the bottom horizontal plate, and the axis in the length direction of the boss is parallel to the left and right vertical plates; left and right supports are respectively provided between the left and right vertical plates and the boss; a part blank is clamped between the left and right supports, and the width of the boss is smaller than the width of the part blank; the pressure plate includes a top surface, a bottom surface, a left surface and a right surface, a first protrusion is provided on one side of the bottom surface of the pressure plate, and a second protrusion is provided on the other side of the bottom surface of the pressure plate; when this design is used, the raw steel plate is firstly subjected to The parts are pressed and corrected, annealed and heat-set, cut and polished to obtain the parts blank, and part of the steel plate stress is eliminated in this process; then the left and right side supports are fixed on the bottom horizontal plate, and several parts blanks are stacked and placed on the boss, and the left and right side supports and the pressing plate are used to clamp and tighten the parts blank, and then the support on one side is removed, and one side of the part blank is milled, and then the support on the other side is fixed, the original support is removed, and the other side of the part blank is milled, and the milling is repeated layer by layer to the forming size; because the amount of single milling is small, the cutting force and stress release are small, and the deformation of the parts after multiple milling is small, which can meet the tolerance requirements, and multiple stacked parts blanks can be milled at the same time, which improves the processing efficiency. Therefore, the long strip parts processed by the present invention not only have small tolerances, but can also be processed in batches, and the production efficiency is high.

[0037] 2. In the present invention, a narrow and thin long strip parts clamping device and batch processing method are provided. The left vertical plate, the right vertical plate, the bottom horizontal plate and the pressure plate are all provided with threaded through holes, and bolts are passed through them. In use, the level between the left support, the right support, the left vertical plate, the right vertical plate and the part blank can be adjusted by adjusting the bolts on the left and right vertical plates. By tightening the bolts, the left and right supports clamp the part blank to control the lateral bending and side bending of the part blank, thereby ensuring the accuracy of part processing. The bolts on the pressure plate cooperate with the threaded holes on the bottom horizontal plate to provide axial clamping force to the part blank, ensuring that the part blank will not be displaced during processing, further reducing tolerances. Moreover, the cooperation between the bolts and the screw holes makes it easier to disassemble during subsequent processing, and is convenient for installation and maintenance. Therefore, the parts processed by the present invention not only have smaller tolerances but are also easy to install and maintain.

[0038] 3. In a clamping device and batch processing method for narrow and thin long strip parts of the present invention, a boss is provided in the middle of the top surface of the bottom horizontal plate, the axis of the boss in the length direction is parallel to the left vertical plate and the right vertical plate, and the width of the boss is smaller than the width of the part blank; in application, a number of part blanks are stacked on the boss, and when the milling cutter processes the part blanks, the entire side surface of the stacked part blanks can be processed in batches in the vertical direction, thereby reducing the tolerance and ensuring the accuracy of the processing surface of the stacked parts during processing. Therefore, the present invention can not only process parts in batches, but also has a smaller tolerance.

[0039] 4. In the present invention, a clamping device and batch processing method for narrow, thin, long strip parts utilizes laser or wire cutting to produce part blanks. Laser cutting uses oxygen as the cutting gas at a cutting pulse frequency of ≥5000 Hz, while wire cutting uses molybdenum wire with a diameter of ≤0.3 mm at a cutting speed of 20 mm / min to 40 mm / min. Both methods can reduce the degree of lateral bending and bending caused by stress release when separating a single part blank from the original steel plate after cutting, while ensuring a smooth cross-section profile without noticeable flash, facilitating subsequent processing and improving production efficiency. Therefore, the present invention offers high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of the present invention.

[0041] Figure 2 It is a structural schematic diagram of the base plate in the present invention.

[0042] Figure 3 It is a top view of the base plate in the present invention.

[0043] Figure 4 It is a structural schematic diagram of the pressing plate in the present invention.

[0044] Figure 5 It is a top view of the pressing plate in the present invention.

[0045] Figure 6 It is a schematic diagram of the connection between the left and right side supports and the base plate in the present invention.

[0046] Figure 7 It is a top view of the left and right side supports in the present invention.

[0047] In the figure: base plate 1, left vertical plate 101, right vertical plate 102, bottom horizontal plate 103, groove 104, boss 105, left through hole 106, right through hole 107, left through hole 108 of bottom plate, right through hole 109 of bottom plate, second bolt 110, third bolt 111, left outer facade 1011, left inner facade 1012, right outer facade 1021, right inner facade 1022, pressing plate 2, pressing plate top surface 201, pressing plate bottom surface 202, pressing plate left surface 203, pressing plate right surface 204, pressing plate through hole 205, first protrusion 206, second protrusion 207, first bolt 208, pressing plate left wall 209, pressing plate right wall 210, screw 211, left support 3, right support 4, part blank 5. DETAILED DESCRIPTION

[0048] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] See also Figure 1 — Figure 7 A narrow and thin long strip parts clamping device, the clamping device includes a base plate 1, a pressure plate 2, a left support 3 and a right support 4;

[0050] The bottom plate 1 includes a left vertical plate 101, a right vertical plate 102, and a bottom horizontal plate 103; the two sides of the bottom horizontal plate 103 are connected to the left vertical plate 101 and the right vertical plate 102 respectively; the left vertical plate 101, the right vertical plate 102 and the bottom horizontal plate 103 together form a groove 104 with an open top surface; a boss 105 is provided in the middle of the top surface of the bottom horizontal plate 103, and the axis of the boss in the longitudinal direction is parallel to the left vertical plate 101 and the right vertical plate 102;

[0051] A left support 3 is provided between the left vertical plate 101 and the boss 105, and a right support 4 is provided between the right vertical plate 102 and the boss 105; a part blank 5 is sandwiched between the left support 3 and the right support 4, and the width of the boss 105 is smaller than the width of the part blank 5;

[0052] The pressing plate 2 includes a pressing plate top surface 201, a pressing plate bottom surface 202, a pressing plate left surface 203 and a pressing plate right surface 204; a first protrusion 206 is provided on one side of the pressing plate bottom surface 202, and a second protrusion 207 is provided on the other side of the pressing plate bottom surface 202;

[0053] The upper portion of the left vertical plate 101 is provided with a plurality of left through holes 106, and the upper portion of the right vertical plate 102 is provided with a plurality of right through holes 107; the left through holes 106 penetrate the left outer surface 1011 of the left vertical plate 101 and the left inner surface 1012 of the left vertical plate 101, and the right through holes 107 penetrate the right outer surface 1021 and the right inner surface 1022 of the right vertical plate 102; the axes of the left through holes 106 and the right through holes 107 are in a straight line;

[0054] A second bolt 110 is passed through the left through hole 106 , and a third bolt 111 is passed through the right through hole 107 .

[0055] A plurality of left through holes 108 are provided on the bottom transverse plate 103 between the left vertical plate 101 and the left support 3, and a plurality of right through holes 109 are provided on the bottom transverse plate 103 between the right vertical plate 102 and the right support 4; the left through holes 108 are located between two adjacent left through holes 106, and the right through holes 109 are located between two adjacent right through holes 107; and the axes of the left through holes 108 and the right through holes 109 are aligned.

[0056] A pressing plate through hole 205 is formed on the top surface 201 of the pressing plate toward the bottom surface 202 of the pressing plate; a first bolt 208 is passed through the pressing plate through hole 205, and the distance between the left wall 209 and the right wall 210 of the pressing plate of the pressing plate through hole 205 is greater than the diameter of the screw 211 of the first bolt 208;

[0057] The distance between the first protrusion 206 and the second protrusion 207 is greater than the distance between the left inner facade 1012 and the boss 105 and smaller than the distance between the left outer facade 1011 and the boss 105;

[0058] The distance between the first protrusion 206 and the second protrusion 207 is greater than the distance between the right inner facade 1022 and the boss 105 and smaller than the distance between the right outer facade 1021 and the boss 105;

[0059] A method for batch processing narrow, thin, and long strip parts using a narrow, thin, and long strip part clamping device, the method comprising the following steps:

[0060] Step 1: pre-treating the raw steel plate, including pressing and correction, annealing heat treatment, cutting, and grinding, to obtain a part blank 5, wherein the outer contour of the part blank 5 is larger than that of the formed part;

[0061] Step 2: First, fix the left support 3 to the bottom horizontal plate 103 between the boss 105 and the left vertical plate 101, then stack several part blanks 5 and place them on the boss 105, and finally adjust the side surfaces of the stacked part blanks 5 until their side surface flatness meets the requirements; at this point, one side of the part blank 5 is in contact with the left support 3, and the left support 3 does not contact the boss 105;

[0062] Step 3: Move the right support 4 close to the left support 3 and fix it to the bottom horizontal plate 103 between the boss 105 and the right vertical plate 102 to clamp the part blank 5; at this time, the other side of the part blank 5 is in contact with the right support 4, and the right support 4 does not contact the boss 105; the clamping target is: the lateral bending value of the part blank 5 is less than the single-side machining allowance value;

[0063] Step 4: Place the pressing plate 2 against the top surface of the part blank 5, providing axial pressing force to the part blank 5 until the first protrusion 206 fits against the top surface of the left vertical plate 101 and the second protrusion 207 fits against the top surface of the part blank 5;

[0064] Step 5: Remove the right support 4. At this time, the left support 3 is in contact with one side of the part blank 5, providing side support for the part blank 5. Then, the side of the part blank 5 without side support is milled, and the milling thickness is less than the single-side machining allowance.

[0065] Step 6: First, fix the right support 4 to the bottom horizontal plate 103 between the boss 105 and the right vertical plate 102, then remove the left support 3 and the pressure plate 2, and finally adjust the side of the stacked part blank 5 until its side flatness meets the requirements; at this time, the right support 4 is in contact with the processed side of the part blank 5, providing side support for the part blank 5;

[0066] Step 7: Place the pressing plate 2 against the top surface of the part blank 5, providing axial pressing force to the part blank 5, until the first protrusion 206 fits against the top surface of the right vertical plate 102, and the second protrusion 207 fits against the top surface of the part blank 5;

[0067] Step 8: Milling the side of the part blank 5 without side support, with the milling thickness being less than the single-side machining allowance;

[0068] Step 9. Repeat steps 3 to 8 until a molded part is obtained.

[0069] In the step 1, the method of pressing and correcting the raw steel plate is: using a hydraulic press to press the raw steel plate along the length direction; the overall flatness target requirement is: overall flatness ≤ 3mm.

[0070] In the step 1, the annealing heat setting treatment is performed by placing the pressed raw steel plate into an annealing device at an annealing temperature of 600° C. to 650° C. for 6 to 8 hours.

[0071] In step 1, the cutting method includes any one of the following:

[0072] The first type: laser cutting, cutting speed: 4500mm / min-5200mm / min; cutting gas: oxygen; cutting pulse frequency: ≥5000Hz;

[0073] The second type: wire cutting, the cutting material is: molybdenum wire with a diameter of ≤0.3mm; the cutting speed is: 20mm / min-40mm / min.

[0074] In step 2 and step 6, the side surface flatness requirement is: side surface flatness ≤ 0.05 mm.

[0075] In step five and step eight, the milling method is: using a carbide milling cutter for milling, the milling thickness is ≤0.5mm; the blade length of the carbide milling cutter is greater than the total height of the stacked part blanks 5, and the diameter of the carbide milling cutter is smaller than the width from the part blank 5 to the left vertical plate 101 and the right vertical plate 102.

[0076] In the step nine, the size of the molded part is: the length of the part> the length of the left support 3 and the length of the right support 4, and the length:width of the part ≥200:1.

[0077] The principle of the present invention is described as follows:

[0078] In the present invention's narrow and thin long strip parts clamping device and batch processing method, the height of the stacked part blanks 5 must be less than the height of the left and right vertical plates, and the thickness of individual part blanks varies. During the stacking process, the individual part blanks need to be measured to confirm the stacking quantity.

[0079] Example 1:

[0080] See also Figure 1 — Figure 7, a narrow and thin long strip part clamping device, the clamping device includes a bottom plate 1, a pressure plate 2, a left support 3 and a right support 4; the bottom plate 1 includes a left vertical plate 101, a right vertical plate 102 and a bottom cross plate 103; the two sides of the bottom cross plate 103 are respectively connected to the left vertical plate 101 and the right vertical plate 102; the left vertical plate 101, the right vertical plate 102 and the bottom cross plate 103 are surrounded by a groove 104 with an opening on the top surface; a boss 105 is provided in the middle of the top surface of the bottom cross plate 103, and the axis of the boss in the length direction is aligned with the left vertical plate 101 and the right vertical plate 102 parallel to each other; a left support 3 is provided between the left vertical plate 101 and the boss 105, and a right support 4 is provided between the right vertical plate 102 and the boss 105; a part blank 5 is sandwiched between the left support 3 and the right support 4, and the width of the boss 105 is smaller than the width of the part blank 5; the pressing plate 2 includes a pressing plate top surface 201, a pressing plate bottom surface 202, a pressing plate left surface 203 and a pressing plate right surface 204; a first protrusion 206 is provided on one side of the pressing plate bottom surface 202, and a second protrusion 207 is provided on the other side of the pressing plate bottom surface 202.

[0081] A batch processing method for narrow, thin and long strip parts, the method comprising the following steps:

[0082] Step 1: pre-treating the raw steel plate, including pressing and correction, annealing heat treatment, cutting, and grinding, to obtain a part blank 5, wherein the outer contour of the part blank 5 is larger than that of the formed part;

[0083] Preferably, the raw steel plate is stainless steel;

[0084] Preferably, the annealing temperature used in the annealing heat treatment is: 600°C-650°C, and the annealing time is: 6 hours-8 hours;

[0085] Preferably, the cutting method is: laser cutting, the cutting speed is: 4500mm / min-5200mm / min; the gas used for cutting is: oxygen; the cutting pulse frequency is: ≥5000Hz;

[0086] Preferably, the outer contour margin of the part blank 5 is set to 1 to 2 mm on one side according to the different aspect ratios;

[0087] The preferred grinding method is to use a corundum grinding wheel to grind the cut surface and edges to remove residual burrs and burrs;

[0088] Step 2: First, fix the left support 3 to the bottom horizontal plate 103 between the boss 105 and the left vertical plate 101, then stack several part blanks 5 and place them on the boss 105. Finally, adjust the side surfaces of the stacked part blanks 5 until their side flatness is ≤0.05mm; at this point, one side of the part blank 5 is in contact with the left support 3, and the left support 3 does not contact the boss 105;

[0089] Preferably, a plurality of part blanks 5 are stacked and placed on the boss 105, and the number of the plurality of part blanks 5 is ≥ 2;

[0090] Step 3: Move the right support 4 close to the left support 3 and securely connect it to the bottom horizontal plate 103 between the boss 105 and the right vertical plate 102 to clamp the part blank 5. At this point, the other side of the part blank 5 is in contact with the right support 4, and the right support 4 does not contact the boss 105. The clamping target is: the lateral deflection value of the part blank 5 is less than 2 mm.

[0091] Step 4: Place the pressing plate 2 against the top surface of the part blank 5 to provide axial pressing force on the part blank 5. The first protrusion 206 is tightly fitted with the top surface of the left vertical plate 101, and the second protrusion 207 is tightly fitted with the top surface of the part blank 5 until the part blank 5 does not move during the processing;

[0092] Step 5: Remove the right support 4. At this time, the left support 3 is in contact with one side of the part blank 5, providing side support for the part blank 5. Then, the side of the part blank 5 without side support is milled to a thickness of 0.5 mm.

[0093] Step 6: First, fix the right support 4 to the bottom horizontal plate 103 between the boss 105 and the right vertical plate 102, then remove the left support 3 and the pressure plate 2, and finally adjust the side of the stacked part blank 5 to a side flatness of ≤0.05mm; at this point, the right support 4 is in contact with the processed side of the part blank 5, providing lateral support for the part blank 5;

[0094] Step 7: Place the pressing plate 2 against the top surface of the part blank 5, providing axial pressing force to the part blank 5, until the first protrusion 206 fits against the top surface of the right vertical plate 102, and the second protrusion 207 fits against the top surface of the part blank 5;

[0095] Step 8: Mill the side of the part blank 5 without side support, with a milling thickness of 0.5 mm;

[0096] Step 9: Repeat steps 3 to 8 until a molded part is obtained;

[0097] Preferably, the parameters used for milling include: milling cutter speed = 1000r / min-1200r / min, tool feed speed = 200mm / min-220mm / min, single cutting thickness = 0.5mm, contour section roughness after processing ≤ Ra3.2, and length and width tolerance of formed parts are (0.1mm, 0mm).

[0098] Example 2:

[0099] The basic content is the same as Example 1, except that:

[0100] The upper portion of the left vertical plate 101 is provided with a plurality of left through holes 106, and the upper portion of the right vertical plate 102 is provided with a plurality of right through holes 107; the left through hole 106 passes through the left outer surface 1011 of the left vertical plate 101 and the left inner surface 1012 of the left vertical plate 101, and the right through hole 107 passes through the right outer surface 1021 and the right inner surface 1022 of the right vertical plate 102; the axes of the left through holes 106 and the right through holes 107 are on a straight line; a second bolt 110 is passed through the left through hole 106, and a third bolt 111 is passed through the right through hole 107; a plurality of bottom plate left through holes are provided on the bottom horizontal plate 103 between the left vertical plate 101 and the left support 3 Hole 108, a plurality of bottom plate right through holes 109 are provided on the bottom horizontal plate 103 between the right vertical plate 102 and the right support 4; the bottom plate left through hole 108 is located between the two adjacent left through holes 106, and the bottom plate right through hole 109 is located between the two adjacent right through holes 107; the axis of the bottom plate left through hole 108 and the bottom plate right through hole 109 are on a straight line; the top surface 201 of the pressure plate is provided with a pressure plate through hole 205 toward the bottom surface 202 of the pressure plate; a first bolt 208 is passed through the pressure plate through hole 205, and the distance between the pressure plate left wall 209 and the pressure plate right wall 210 of the pressure plate through hole 205 is greater than the diameter of the screw 211 of the first bolt 208.

[0101] In application, first place the left support 3 between the protrusion 105 and the left through hole 108 of the bottom plate, screw several second bolts 110 into several left through holes 106, abut against one side of the left support 3, and support the left support 3, then adjust the second bolts 110 so that the left support 3 and the left vertical plate 101 are kept level, then stack several part blanks 5 on the protrusion 105, and then place the right support 4 between the protrusion 105 and the right through hole 10 of the bottom plate, screw several third bolts 111 into several right through holes 107, abut against one side of the right support 4, and support the right support 4, then adjust the third bolts 111 so that the right support 4 and the right vertical plate 102 are kept level, then The second bolt 110 and the third bolt 111 are tightened, preferably with a tightening torque of 80 N*m, to clamp the part blank 5 in the left support 3 and the right support 4, so that the lateral bending value of the part blank 5 is less than the single-sided processing allowance; finally, the first protrusion 107 of the pressure plate 2 is abutted against the top surface of the part blank 5, and the second protrusion 106 is abutted against the top surface of the left vertical plate 101, and then the first bolt 208 is tightened into the left through hole 108 of the base plate, preferably with a tightening torque of 60 N*m, to provide an axial clamping force to the part blank 5, to ensure that the part blank 5 will not be displaced during the processing. In the subsequent processing, the left and right supports and the pressure plate can be conveniently disassembled and assembled by bolts, which is convenient for processing.

[0102] Example 3:

[0103] The basic content is the same as Example 1, except that:

[0104] The bottom surfaces of the left support 3 and the right support 4, that is, the surfaces in contact with the top surface of the bottom horizontal plate 103, have a roughness of ≤Ra1.6 to ensure smooth sliding on the bottom plate plane; the surface of the left support 3 facing the left vertical plate 101 and the surface of the right support 4 facing the right vertical plate 102, have a roughness requirement of ≤Ra1.6, flatness ≤0.03mm, and perpendicularity to their own bottom surfaces ≤0.05mm. At the same time, after the single-sided multi-segment support is installed on the bottom plate, the overall flatness of multiple sides needs to be leveled to ≤0.05mm to ensure the positioning accuracy when the side of the part is close to the plane, thereby ensuring the dimensional tolerance of the final processing.

[0105] Example 4:

[0106] The basic content is the same as Example 3, except that:

[0107] In the present invention, by increasing the length of the bottom plate and increasing the number of left and right supports and pressure plates, the processing range of the present invention can be expanded and the scope of application of the present invention can be further improved.

[0108] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A method for batch processing narrow, thin, and long strip parts using a clamping device for narrow, thin, and long strip parts, characterized by: The clamping device comprises a base plate (1), a pressure plate (2), a left support (3) and a right support (4); The bottom plate (1) comprises a left vertical plate (101), a right vertical plate (102) and a bottom transverse plate (103); both sides of the bottom transverse plate (103) are connected to the left vertical plate (101) and the right vertical plate (102) respectively; the left vertical plate (101), the right vertical plate (102) and the bottom transverse plate (103) are combined to form a groove (104) with an opening on the top surface; a boss (105) is provided in the middle of the top surface of the bottom transverse plate (103), and the axis of the boss in the longitudinal direction is parallel to the left vertical plate (101) and the right vertical plate (102); A left side support (3) is provided between the left vertical plate (101) and the boss (105), and a right side support (4) is provided between the right vertical plate (102) and the boss (105); a part blank (5) is sandwiched between the left side support (3) and the right side support (4), and the width of the boss (105) is smaller than the width of the part blank (5); The pressing plate (2) comprises a pressing plate top surface (201), a pressing plate bottom surface (202), a pressing plate left surface (203) and a pressing plate right surface (204); a first protrusion (206) is provided on one side of the pressing plate bottom surface (202), and a second protrusion (207) is provided on the other side of the pressing plate bottom surface (202); The upper portion of the left vertical plate (101) is provided with a plurality of left through holes (106), and the upper portion of the right vertical plate (102) is provided with a plurality of right through holes (107); the left through holes (106) penetrate the left outer surface (1011) of the left vertical plate (101) and the left inner surface (1012) of the left vertical plate (101), and the right through holes (107) penetrate the right outer surface (1021) and the right inner surface (1022) of the right vertical plate (102); the axes of the left through holes (106) and the right through holes (107) are on a straight line; A second bolt (110) is passed through the left through hole (106), and a third bolt (111) is passed through the right through hole (107); A plurality of bottom plate left through holes (108) are provided on the bottom transverse plate (103) between the left vertical plate (101) and the left support (3), and a plurality of bottom plate right through holes (109) are provided on the bottom transverse plate (103) between the right vertical plate (102) and the right support (4); the bottom plate left through hole (108) is located between two adjacent left through holes (106), and the bottom plate right through hole (109) is located between two adjacent right through holes (107); the axes of the bottom plate left through hole (108) and the bottom plate right through hole (109) are on a straight line; A pressure plate through hole (205) is provided on the top surface (201) of the pressure plate toward the bottom surface (202) of the pressure plate; a first bolt (208) is passed through the pressure plate through hole (205); and a distance between the left wall (209) of the pressure plate and the right wall (210) of the pressure plate of the pressure plate through hole (205) is greater than the diameter of the screw (211) of the first bolt (208); The method for batch processing narrow, thin, long strip parts comprises the following steps: Step 1: pre-treating the raw steel plate, wherein the pre-treating includes pressing and correction, annealing heat treatment, cutting, and grinding to obtain a part blank (5), wherein the outer contour of the part blank (5) is larger than that of the formed part; Step 2: First, the left support (3) is fixedly connected to the bottom horizontal plate (103) between the boss (105) and the left vertical plate (101), and then a plurality of part blanks (5) are stacked and placed on the boss (105), with the number of the plurality of part blanks 5 being ≥2. Finally, the side surfaces of the stacked part blanks (5) are adjusted until the side surface flatness meets the requirements; at this time, one side of the part blank (5) is in contact with the left support (3), and the left support (3) is not in contact with the boss (105); Step 3: The right side support (4) is brought close to the left side support (3) and fixedly connected to the bottom horizontal plate (103) between the boss (105) and the right vertical plate (102) to clamp the part blank (5); at this time, the other side of the part blank (5) is in contact with the right side support (4), and the right side support (4) does not contact the boss (105); the clamping target is: the lateral bending value of the part blank (5) is less than the single-side machining allowance value; Step 4: Place the pressing plate (2) against the top surface of the part blank (5) to provide an axial pressing force on the part blank (5) until the first protrusion (206) fits against the top surface of the left vertical plate (101) and the second protrusion (207) fits against the top surface of the part blank (5); Step 5: Remove the right support (4). At this time, the left support (3) is in contact with one side of the part blank (5), providing side support for the part blank (5); then, the side of the part blank (5) without side support is milled, and the milling thickness is less than the single-side machining allowance; Step 6: First, the right support (4) is fixedly connected to the bottom horizontal plate (103) between the boss (105) and the right vertical plate (102), and then the left support (3) and the pressure plate (2) are removed. Finally, the side of the stacked part blank (5) is adjusted until its side flatness meets the requirements; at this time, the right support (4) is in contact with the processed side of the part blank (5), providing side support for the part blank (5); Step 7: Place the pressing plate (2) against the top surface of the part blank (5) to provide an axial pressing force on the part blank (5) until the first protrusion (206) fits against the top surface of the right vertical plate (102) and the second protrusion (207) fits against the top surface of the part blank (5); Step 8: Milling the side of the part blank (5) without side support, with the milling thickness being less than the single-side machining allowance; Step 9. Repeat steps 3 to 8 until a molded part is obtained.

2. The method for batch processing narrow, thin, and long strip parts using a clamping device for narrow, thin, and long strip parts according to claim 1, characterized in that: The distance between the first protrusion (206) and the second protrusion (207) is greater than the distance between the left inner facade (1012) and the boss (105) and smaller than the distance between the left outer facade (1011) and the boss (105); The distance between the first protrusion (206) and the second protrusion (207) is greater than the distance between the right inner facade (1022) and the boss (105) and smaller than the distance between the right outer facade (1021) and the boss (105).

3. The method for batch processing narrow, thin, and long strip parts using a clamping device for narrow, thin, and long strip parts according to claim 1, characterized in that: In the step 1, the method of pressing and correcting the raw steel plate is: using a hydraulic press to press the raw steel plate along the length direction; the overall flatness target requirement is: overall flatness ≤ 3mm.

4. The method for batch processing narrow, thin, and long strip parts using a clamping device for narrow, thin, and long strip parts according to claim 1, characterized in that: In the step 1, the annealing heat setting treatment is performed by placing the pressed raw steel plate into an annealing device at an annealing temperature of 600° C. to 650° C. for 6 to 8 hours.

5. The method for batch processing narrow, thin, and long strip parts using a narrow, thin, and long strip parts clamping device according to claim 1, characterized in that: In step 1, the cutting method includes any one of the following: The first type: laser cutting, cutting speed: 4500mm / min-5200mm / min; cutting gas: oxygen; cutting pulse frequency: ≥5000Hz; The second type: wire cutting, the cutting material is: molybdenum wire with a diameter of ≤0.3mm; the cutting speed is: 20mm / min-40mm / min.

6. The method for batch processing narrow, thin, and long strip parts using a clamping device for narrow, thin, and long strip parts according to claim 1, characterized in that: In step 2 and step 6, the side surface flatness requirement is: side surface flatness ≤ 0.05 mm.

7. The method for batch processing narrow, thin, and long strip parts using a clamping device for narrow, thin, and long strip parts according to claim 1, characterized in that: In step five and step eight, the milling method is: using a carbide milling cutter for milling, with the milling thickness being ≤0.5 mm; the blade length of the carbide milling cutter is greater than the total height of the stacked part blanks (5), and the diameter of the carbide milling cutter is smaller than the width from the part blanks (5) to the left vertical plate (101) and the right vertical plate (102).

8. The method for batch processing narrow, thin, and long strip parts using a clamping device for narrow, thin, and long strip parts according to claim 1, characterized in that: In the step nine, the size of the molded part is: the length of the part> the length of the left support (3) and the length of the right support (4), and the length: width of the part ≥ 200:1.

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