Multi-step special-shaped copper strip planing and milling process
By using milling to process multiple steps on copper strip, the problems of bright strip and dimensional instability caused by rolling process are solved, thereby improving the stability and precision of copper strip processing and reducing production costs.
Patent Information
- Application Number
- CN202610111218.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-27
- Publication Date
- 2026-03-06
AI Technical Summary
When processing multi-step irregular copper strips using existing rolling processes, bright bands and dimensional instability are easily generated at the step junctions, resulting in high production difficulty, high cost, and inconsistent dimensions.
The milling process is adopted. By restricting the vertical and horizontal degrees of freedom of the copper strip on the worktable, multiple sets of milling components and adjustment mechanisms are used to adjust the position of the milling cutter and feed the copper strip horizontally to perform step processing, so as to avoid stress concentration at the step junction of the rolling process.
This effectively avoids the bright band and dimensional instability issues at the step junction, improves the processing stability and precision of the copper strip, and reduces production costs.
Smart Images
Figure CN121607686A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of copper strip processing technology, and in particular to a multi-step milling process for irregularly shaped copper strips. Background Technology
[0002] Currently, copper strip is typically processed using rolling technology; if multi-step irregular-shaped copper strip is to be processed using rolling technology, before rolling, such as... Figure 1 As shown, the lower roll 91 contacts the lower surface of the copper strip 8, and the upper roll 9 is located above the copper strip 8; after rolling, as... Figure 2 As shown, the upper roller 9 contacts the upper surface of the copper strip 8, and the steps on the copper strip 8 are rolled out by the cavity 90 (protrusions and grooves) on the upper roller 9.
[0003] However, the following drawbacks exist in processing multi-step shaped copper strips using rolling technology:
[0004] 1. The production of irregularly shaped raw materials before rolling is difficult and the dimensions are unstable, which leads to inconsistent deformation at different positions of the material during rolling, resulting in problems such as twisting, displacement or dimensional instability.
[0005] 2. Switching between production of stepped copper strips of different specifications is a complicated process and has high tooling costs.
[0006] 3. During the rolling process, due to the uneven deformation at the step junction of the multi-step shaped copper strip 8, there is a complex distribution of residual stress inside the shaped copper strip 8. In the subsequent processing, the stress inside the shaped copper strip 8 will be redistributed, causing unpredictable warping, twisting or displacement of the shaped copper strip 8, resulting in dimensional instability of the shaped copper strip 8.
[0007] 4. During the rolling process, due to the large amount of processing at the step junctions on the shaped copper strip 8, the upper roll 9 has a large degree of elastic flattening at these locations, while the processing amount is small at the non-step junctions, resulting in a small degree of flattening by the upper roll 9. This leads to inconsistent deformation at different locations, which can easily cause severe stress concentration at the step junctions. This can result in the formation of bright bands at the step junctions (bright bands are high-hardness, high-reflectivity areas formed at the step junctions during the forming process of the shaped copper strip due to severe plastic deformation leading to grain refinement. These areas are the areas with the greatest shear stress and extrusion stress on the metal material and are also potential areas of stress concentration risk).
[0008] In summary, the use of rolling technology to process multi-step irregular copper strip 8 can easily lead to technical defects such as the formation of bright bands at the step junctions of the irregular copper strip 8 and dimensional instability of the irregular copper strip 8. Summary of the Invention
[0009] In view of the shortcomings of the prior art, the purpose of this invention is to provide a multi-step irregular copper strip milling process, which aims to solve the technical problems of existing rolling processes for processing multi-step irregular copper strips, which easily leads to the formation of bright bands at the step junctions of the irregular copper strip and the instability of the dimensions of the irregular copper strip.
[0010] To achieve the above objectives, the present invention adopts the following technical solution: A multi-step milling process for irregularly shaped copper strips includes the following steps: S1. Place the copper strip of the step to be processed on the worktable and restrict the copper strip's freedom in the vertical and horizontal Y directions on the worktable, allowing the copper strip to move only in the horizontal X direction; wherein the horizontal X direction and the horizontal Y direction are in the same plane and perpendicular to each other; S2. The worktable is provided with multiple sets of milling and planing components on at least one side in the horizontal Y direction. Each set of milling and planing components includes a drive unit, a milling cutter and an adjustment mechanism. Multiple milling cutters are distributed at intervals along the horizontal X direction. S3. Adjust each drive unit through each adjustment mechanism to adjust the position of each milling cutter in the vertical and horizontal Y directions according to the milling allowance required for milling the steps. S4. Start each drive unit to drive each milling cutter to rotate around the horizontal Y direction; S5. The copper strip placed on the worktable is driven by the feeding mechanism to be conveyed along the horizontal X direction. After the copper strip passes through each milling cutter in the horizontal X direction, multiple steps can be milled on the copper strip.
[0011] Furthermore, the plurality of milling cutters include a roughing cutter A, a roughing cutter B, and a roughing cutter C. The copper strip is conveyed along the horizontal X direction and passes through the roughing cutter A, the roughing cutter B, and the roughing cutter C in sequence. The roughing cutter A is used to rough mill out the first step on the copper strip, the roughing cutter B is used to widen the first step in the horizontal Y direction, and the roughing cutter C is used to rough mill out the second step on the copper strip based on the first step.
[0012] Furthermore, the plurality of milling cutters also include a finish milling cutter A and a finish milling cutter B. The copper strip is conveyed along the horizontal X direction and passes sequentially through the rough milling cutter A, the rough milling cutter B, the rough milling cutter C, the finish milling cutter A, and the finish milling cutter B. The finish milling cutter A is used for finish milling the first step after the size is enlarged by the rough milling cutter B, and the finish milling cutter B is used for finish milling the second step.
[0013] Furthermore, the worktable is swayable on the base in the horizontal X direction.
[0014] Furthermore, the worktable is provided with multiple rotatable pressure rollers, each pressure roller extending along the horizontal Y direction, and the multiple pressure rollers are evenly spaced along the horizontal X direction, with each pressure roller making rolling contact with the upper surface of the copper strip placed on the worktable.
[0015] Furthermore, the workbench is provided with multiple sets of adjustment structures, each of which is used to adjust the vertical lifting and lowering of each pressure roller.
[0016] Furthermore, the adjustment structure includes two adjustment components, which are respectively arranged on opposite sides of the worktable. Each adjustment component includes an adjustment element, an elastic element, a fixed frame, and a slider. The fixed frame is fixed to the worktable and extends vertically. The adjustment element is threaded vertically through the top of the fixed frame, and the bottom of the adjustment element is fixed to one end of the elastic element. The other end of the elastic element is connected and fixed to the slider, which slides vertically within the fixed frame. One end of the pressure roller is rotatably mounted on the slider of one adjustment component, and the other end of the pressure roller is rotatably mounted on the slider of the other adjustment component.
[0017] Furthermore, rollers and limiting plates are respectively provided on opposite sides of the surface of the workbench. The limiting plate slides in contact with one side of the copper strip placed on the workbench, and the rollers roll in contact with the other side of the copper strip.
[0018] Furthermore, the limiting plate can slide along the horizontal Y direction and be locked on the worktable by the locking element.
[0019] Furthermore, the worktable is provided with multiple sets of milling and planing components on both opposite sides in the Y-direction.
[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: In the multi-step irregular copper strip milling process of this invention, the copper strip to be processed is placed on a worktable, and the copper strip's degrees of freedom in the vertical and horizontal Y directions are restricted on the worktable, allowing the copper strip to move only in the horizontal X direction. This ensures the positional stability of the copper strip during processing and avoids step size deviations caused by copper strip offset. Based on this, multiple sets of milling assemblies are arranged on at least one side of the worktable in the horizontal Y direction. Each set of milling assemblies includes a drive unit, a milling cutter, and an adjustment mechanism. The milling cutters of each set of milling assemblies are spaced apart in the horizontal X direction. Thus, during the milling process of the steps, the milling allowance of the steps is first required, and the positions of each milling cutter in the vertical and horizontal Y directions are adjusted by the adjustment mechanisms, so that multiple milling cutters can be independently adjusted in spatial position for different step requirements. Then, each drive unit is activated to drive each milling cutter to rotate. Finally, the copper strip placed on the worktable is driven to be conveyed in the horizontal X direction by the feeding mechanism. After the copper strip passes through the milling cutters of each set of milling assemblies in the horizontal X direction, multiple steps can be milled on the copper strip. In summary, this invention uses milling to achieve multi-step processing on copper strips, avoiding the use of rolling processes, thereby effectively overcoming the technical defects of bright bands at the step junctions and dimensional instability of irregularly shaped copper strips. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure before rolling in the background art of the present invention; Figure 2 This is a schematic diagram of the structure after rolling, as described in the background art of this invention; Figure 3 This is a flowchart of the multi-step irregular copper strip milling process in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the milling assembly in the milling step state according to an embodiment of the present invention; Figure 5 for Figure 4 Top view; Figure 6 for Figure 4 A bottom view; Figure 7 This is a schematic diagram of the connection between the workbench and the base in this embodiment; Figure 8 This is a schematic diagram of the structure involving the sliding connection between the worktable and the sliding block in this embodiment; Figure 9 This is a schematic diagram of the structure connecting the adjustment component and the pressure roller in this embodiment; Figure 10 This is a top view of the multi-step state in which multiple milling cutters are used to process copper strip in this embodiment; Figure 11 This is a side view of the copper strip involved in the step to be processed in this embodiment; Figure 12 This is a side view of the copper strip after rough milling with milling cutter A in this embodiment; Figure 13 This is a side view of the copper strip after rough milling with milling cutter B in this embodiment; Figure 14 This is a side view of the copper strip after rough milling with milling cutter C in this embodiment; Figure 15 This is a side view of the copper strip after milling with milling cutter A in this embodiment; Figure 16 This is a side view of the copper strip after milling with milling cutter B in this embodiment.
[0022] Numbers in the attached drawings: 1. Worktable; 10. Roller; 11. Limiting plate; 110. First locking element; 12. Guide groove; 13. Rotary shaft; 14. Threaded hole; 15. Shaft hole; 2. Drive unit; 20. Milling cutter; 21. Adjustment mechanism; 210. Z-axis linear module; 211. Y-axis linear module; 22. Rough milling cutter A; 23. Rough milling cutter B; 24. Rough milling cutter C; 25. Finish milling cutter A; 26. Finish milling cutter B; 3. Adjustment assembly; 30. Elastic element; 31. Fixed frame; 310. Slide groove; 32. Slider; 33. Pressure roller; 34. Adjustment element; 4. Base; 40. Waist-shaped groove; 5. Drive structure; 50. Screw mechanism; 6. Second locking element; 7. Sliding block; 8. Copper strip; 80. First step; 81. Second step; 9. Upper roller; 90. Cavity; 91. Lower roller. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention.
[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.
[0025] It should be noted that in the description of this invention, terms such as "upper," "lower," "left," "right," "inner," and "outer," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, it should be noted that in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0026] Please refer to Figures 3-16This invention provides a multi-step irregular copper strip milling process, comprising the following steps: S1. Place the copper strip 8 of the step to be processed on the worktable 1, and restrict the copper strip 8 in the vertical and horizontal Y directions on the worktable 1, allowing the copper strip to move only in the horizontal X direction; wherein the horizontal X direction and the horizontal Y direction are in the same plane and perpendicular to each other. S2. The worktable 1 has multiple sets of milling and planing components on at least one side in the horizontal Y direction. Each set of milling and planing components includes a drive unit 2, a milling cutter 20 and an adjustment mechanism 21. The multiple milling cutters 20 are distributed at intervals along the horizontal X direction. S3. To adjust the position of each milling cutter 20 in the vertical and horizontal Y directions, each driving unit 2 is adjusted by each adjustment mechanism 21 according to the milling allowance of the step as required. S4. Start each drive unit 2 to drive each milling cutter 20 to rotate around the horizontal Y direction; S5. The copper strip placed on the worktable 1 is driven by the feeding mechanism to be conveyed in the horizontal X direction. After the copper strip passes through each milling cutter 20 in the horizontal X direction, multiple steps can be milled out on the copper strip.
[0027] It should be noted that multi-step irregular copper strips can be formed by machining multiple steps on copper strip 8.
[0028] The drive unit 2 of each milling assembly is used to drive the milling cutter 20 of each milling assembly to rotate around the horizontal Y direction. The adjustment mechanism 21 of each milling assembly is used to drive the drive unit 2 of each milling assembly to move along the horizontal Y direction and vertically. The milling cutters 20 of each milling assembly are distributed at intervals along the horizontal X direction. The position of each drive unit 2 in the vertical and horizontal Y directions is adjusted by each adjustment mechanism 21, so as to adjust the position of each milling cutter 20 in the vertical and horizontal Y directions, thereby allowing multiple milling cutters 20 to independently adjust their spatial position according to different step requirements.
[0029] During the milling process, the milling allowance of the steps is first determined by adjusting the driving units 2 through the adjusting mechanisms 21 to adjust the position of each milling cutter 20 in the vertical and horizontal Y directions. Then, the driving units 2 are activated to drive each milling cutter 20 to rotate around the horizontal Y direction. Finally, the copper strip placed on the worktable 1 is conveyed along the horizontal X direction by the feeding mechanism. After the copper strip passes through the milling cutters 20 of each milling assembly in the horizontal X direction, multiple steps can be milled on the copper strip. This invention uses milling technology to achieve step processing on copper strips, avoiding the use of rolling technology to achieve multi-step processing on copper strips, thereby effectively overcoming the technical defects of bright bands and dimensional instability of irregularly shaped copper strips at the step junctions.
[0030] It should be noted that the "copper strip for processing steps" is a flat strip of pure copper or oxygen-free copper material, and its initial state is a single-layer, uniformly thick rectangular cross-section strip (e.g. Figure 11 (As shown).
[0031] In addition, by restricting the copper strip's freedom in the vertical and horizontal Y directions on the worktable 1, and only allowing the copper strip to move in the horizontal X direction, the positional stability of the copper strip during processing is ensured, and step size deviations caused by copper strip material offset are avoided.
[0032] The drive unit 2 is a servo motor; the adjustment mechanism 21 includes a Z-axis linear module 210 and a Y-axis linear module 211. The Z-axis linear module 210 is mounted on the base 4 and is used to drive the Y-axis linear module 211 to move vertically. The Y-axis linear module 211 is mounted on the Z-axis linear module 210 and connected to the drive unit 2. The Y-axis linear module 211 is used to drive the drive unit 2 to move horizontally in the Y direction.
[0033] In summary, this invention uses milling to achieve multi-step processing on copper strips, avoiding the use of rolling processes. This effectively overcomes the technical defects of bright bands and dimensional instability at the step junctions of copper strips caused by rolling processes.
[0034] In step S1, "restricting the copper strip's degree of freedom in the horizontal Y direction" is achieved by setting a limiting structure on the surface of worktable 1. Specifically, refer to... Figure 4 , Figure 7 Rollers 10 and adjustable limiting plates 11 are respectively provided on opposite sides of the surface of the worktable 1. The limiting structure includes rollers 10 and adjustable limiting plates 11 on the surface of the worktable 1. The limiting plate 11 slides in contact with one side of the copper strip placed on the worktable 1, and the rollers 10 roll in contact with the other side of the copper strip, thereby constraining the lateral displacement of the copper strip in the horizontal Y direction.
[0035] Among them, reference Figure 5 The rotation axis of roller 10 extends vertically; the adjustable limit plate refers to the fact that the limit plate 11 can slide along the horizontal Y direction and be locked on the worktable 1 by the first locking member 110 (such as a screw). After the first locking member 110 is unlocked, the limit plate can be manually adjusted to move along the horizontal Y direction to achieve the purpose of adjusting the limit plate 11. It should be noted that the locking structure for locking the limit plate 11 on the worktable 1 is the same as the locking structure for locking the worktable 1 on the base 4.
[0036] In step S1, "restricting the vertical degree of freedom of the copper strip" is achieved by applying a downward preload through the pressure roller assembly. Specifically, the worktable 1 is equipped with a pressure roller assembly, as shown in the reference... Figure 4 , Figure 5The pressure roller assembly includes multiple rotatable rollers. It should be noted that each milling cutter 20 is located between each pair of adjacent pressure rollers 33, which can further improve the milling effect of the steps.
[0037] In addition, refer to Figure 1 Pressure rollers 33 extend along the horizontal Y-direction and are rotatable along the horizontal Y-direction. Multiple pressure rollers 33 are evenly spaced along the horizontal X-direction. Each pressure roller 33 makes rolling contact with the upper surface of the copper strip placed on the worktable 1 to form a line contact rolling constraint, preventing the copper strip from warping under milling force. (Refer to...) Figure 4 and Figure 5 The workbench 1 is equipped with multiple sets of adjustment structures. Specifically, each adjustment structure includes two sets of adjustment components 3, which are respectively arranged on opposite sides of the workbench 1 and spaced apart along the horizontal Y direction.
[0038] Reference Figure 4 and Figure 9 Each adjustment component 3 includes an elastic element 30, a fixed frame 31, a slider 32, and an adjustment element 34. The fixed frame 31 is fixed to the worktable 1 and extends vertically. The fixed frame 31 is a rigid rectangular hollow frame with its bottom surface fixedly connected to the surface of the worktable 1. A groove 310 is formed inside to guide the vertical movement of the slider 32.
[0039] Reference Figure 4 and Figure 9An adjusting member 34 is threaded vertically through the top of the fixed frame 31, and its bottom is fixed to one end of the elastic member 30. The adjusting member 34 is a vertically positioned adjusting screw; its external thread engages with the internal thread at the top of the fixed frame 31, allowing axial displacement through rotation. The other end of the elastic member 30 is connected and fixed to the slider 32. The elastic member 30 is a spring, used to be compressed and store energy during the downward pressing of the adjusting member 34, and to provide elastic reaction force during copper strip thickness fluctuations or feed impacts. The slider 32's shape matches the inner cavity of the fixed frame 31, allowing it to slide smoothly vertically within the fixed frame 31. The slider 32 is vertically slidable within the fixed frame 31. Alternatively, one end of the pressure roller 33 is rotatably mounted on the slider 32 of one adjusting assembly, and the other end is rotatably mounted on the slider 32 of another adjusting assembly. Therefore, by symmetrically arranging two adjustment components on both sides of the worktable 1, the pressure roller 33 is subjected to balanced force at both ends; precise and controllable height adjustment is achieved through the threaded transmission of the adjustment component 34; a flexible connection is introduced between the adjustment component 34 and the slider 32 using the elastic component 30, which absorbs the impact energy at the moment the pressure roller 33 contacts the copper strip, preventing scratches or local dents on the surface of the copper strip caused by rigid pressing; the slider 32 slides vertically within the fixed frame 31, ensuring smooth and unobstructed lifting process; ultimately, the pressure roller 33 can reliably press the copper strip to suppress its vertical runout and Y-axis deviation during milling, and can also adaptively compensate for minor tolerances in the copper strip thickness, maintaining a constant and effective pressing force, thus improving the dimensional stability and surface quality consistency of multi-step continuous milling operations.
[0040] The method for adjusting the action of the pressure roller 33 in this embodiment is as follows: by manually turning the top of the adjusting member 34, the adjusting member 34 is turned downward along the top thread of the fixed frame 31, pushing the elastic member 30 to compress and deform, thereby transferring the potential energy stored in the elastic member 30 to the slider 32, driving the slider 32 to move downward along the inner wall of the fixed frame 31, and causing the pressure roller 33 to drop as a whole; when the adjusting member 34 is loosened, the elastic member 30 recovers its deformation and pushes the slider 32 upward, causing the pressure roller 33 to rise.
[0041] In other embodiments, the adjustment method of the pressure roller 33 is as follows: a servo motor drives the adjustment component 34 to rotate, and the controller controls the feed amount of the adjustment component 34 in a closed loop according to the preset clamping force threshold or the real-time detected pressure feedback signal of the pressure roller 33, thereby realizing the automatic fine adjustment of the height of the pressure roller 33.
[0042] Here is an example illustrating the machining of multiple steps on copper: (See reference...) Figure 4 , Figure 10The multiple milling cutters 20 include roughing cutter A22, roughing cutter B23, roughing cutter C24, finishing cutter A25, and finishing cutter B26. That is, in this embodiment, there are five sets of milling and planing assemblies above one side of the copper strip. The milling cutter 20 of the first set of milling and planing assemblies is a roughing cutter A22, the milling cutter 20 of the second set of milling and planing assemblies is a roughing cutter B23, the milling cutter 20 of the third set of milling and planing assemblies is a roughing cutter C24, the milling cutter 20 of the fourth set of milling and planing assemblies is a finishing cutter A25, and the milling cutter 20 of the fifth set of milling and planing assemblies is a finishing cutter B26. Among them, rough milling cutter A22 is used to rough mill the first step 80 on the copper strip; rough milling cutter B23 is used to enlarge the width of the first step in the horizontal Y direction; rough milling cutter C24 is used to rough mill the second step on the copper strip based on the first step 80; finish milling cutter A25 is used to finish mill the first step after its size has been enlarged by rough milling cutter B23; finish milling cutter B26 is used to finish mill the second step 81. It can be understood that the copper strip moves unidirectionally in the horizontal X direction at a constant linear velocity under the drive of the feeding mechanism, so that the copper strip is conveyed in the horizontal X direction sequentially through the effective cutting areas of milling cutter A22, rough milling cutter B23, rough milling cutter C24, finish milling cutter A25, and finish milling cutter B26. The cutting edge profile of rough milling cutter A22 matches the cross-sectional shape of the target first step, and is used to remove material for the first time on the original copper strip plane to mill the first step (e.g., ...). Figure 12 After the copper strip passes through the rough milling cutter B23, the first step is cut a second time by the rough milling cutter B23 to widen the width of the first step in the horizontal Y direction (e.g., Figure 13 After the copper strip passes through the rough milling cutter C24, the first step is cut a third time by the rough milling cutter C24 to remove material from the side of the top surface of the first step closest to the drive unit 2, forming a second step lower than the first step (e.g., Figure 14 After the copper strip passes through the finish milling cutter A25, the finish milling cutter A25 performs final dimensional finishing on the first step, which has been enlarged by the rough milling cutter B23, to achieve a finish machining of the width of the first step after the enlargement by the rough milling cutter B23 (e.g., Figure 15 After the copper strip passes through the 20D finish milling cutter, the second step is finished using the B26 finish milling cutter to achieve a fine machining of the second step thickness (e.g., Figure 16 Therefore, it can be seen that in the process of milling steps, the present invention first rough mills and then finish mills to ensure the precise dimensions of the steps.
[0043] Among them, such as Figure 12 As shown, width D1 and thickness H1 are the dimensions of the first step 80 milled by the rough milling cutter A22 when removing material from the original copper strip plane; as Figure 13 As shown, width D2 and thickness H1 are the dimensions obtained by the rough milling cutter B23 making a second cut on the first step, enlarging the width of the first step 80 in the horizontal Y direction; as shown... Figure 14As shown, width D3 and thickness H2 are the dimensions of the second step 81 obtained by the third cut of the first step 80 by the rough milling cutter C24, which removes material from the side of the top surface of the first step 80 closest to the drive unit 2; as shown. Figure 15 As shown, width D4 and thickness H3 are the dimensions obtained by finishing the first step 80, which has been enlarged by roughing cutter B23, using finish milling cutter A25; as Figure 16 As shown, the width D5 and thickness H4 are the dimensions obtained by precision milling the second step 81 with a precision milling cutter B26.
[0044] This section describes the process parameters for multi-step copper strip milling: Table 1
[0045] In this embodiment, the rotational speeds of roughing cutters A22, B23, and C24 are 2000 rpm; the rotational speeds of finishing cutters A25 and B26 are 3500 rpm; the machining allowance of roughing cutters A22, B23, and C24 is 1.3 mm, and the machining allowance of finishing cutters A25 and B26 is 0.2 mm. mm; the feed rate of roughing cutters A22, B23, and C24 is 0.7 m / min, and the feed rate of finish cutters A25 and B26 is 0.7 m / min; the thickness of roughing cutters A22, B23, and C24 is 26 mm, and the thickness of finish cutters A25 and B26 is 12 mm; the number of teeth of roughing cutters A22, B23, and C24 is the same, 24.
[0046] In other embodiments, the rotational speeds of roughing cutters A22, B23, and C24 are 2500 rpm; the rotational speeds of finishing cutters A25 and B26 are 3000 rpm; the machining allowance of roughing cutters A22, B23, and C24 is 0.8 mm, and the machining allowance of finishing cutters A25 and B26 is 0.3 mm; the feed rate of roughing cutters A22, B23, and C24 is 1.2 m / min. The roughing cutters A22 and B23 for finish milling cutters A25 and B26 have a speed of 1.2 m / min; the thickness of roughing cutters A22, B23, and C24 is 13 mm, and the thickness of finish milling cutters A25 and B26 is 31 mm; finish milling cutters A25 and B26 have the same number of teeth, 60.
[0047] It should be noted that roughing cutters A22, B23, and C24 are all inlaid carbide three-sided milling cutters 20; finishing cutters A25 and B26 are both solid carbide tungsten steel saw blades.
[0048] In step S2, multiple sets of milling and planing components are arranged on both sides of the worktable 1 in the horizontal Y direction. Specifically, multiple sets of milling and planing components with the same structure are arranged on the left and right sides of the worktable 1 along the horizontal Y direction. Combined with the spacing distribution of each milling cutter 20 in the X direction and its independently adjustable Y-direction and vertical positions, this invention enables the simultaneous multi-step milling and planing of the copper strip on both sides, improving the efficiency of multi-step machining on the opposite sides of the copper strip.
[0049] Furthermore, the worktable 1 is mounted on the base 4 and can swing around in the horizontal X direction. Specifically, refer to... Figure 4 and Figures 6-8 The base 4 has a cylindrical rotating shaft 13 extending in the horizontal X direction. A shaft hole 15 matching the rotating shaft 13 is formed inside one side of the worktable 1 in the horizontal Y direction. The shaft hole 15 extends through both sides of the worktable 1 in the horizontal X direction, and the rotating shaft 13 passes through the shaft hole to form a rotating pair. A driving mechanism is provided on the base 4, which is driven by a sliding block 7. The driving mechanism drives the sliding block 7 to move in the horizontal Y direction. A guide groove 12 is formed on the bottom surface of the worktable 1, and the guide groove 12 is sloped in the horizontal Y direction. The sliding block 7 slides in the guide groove 12. A locking structure is provided on the side of the worktable 1 facing away from the shaft hole, which locks to the base 4. When the locking structure is unlocked, the sliding block 7 is driven to slide along the guide groove 12 by the driving mechanism, which causes the worktable 1 to swing around the horizontal X direction. When the locking structure is locked, the worktable 1 is locked to the base 4. Therefore, the worktable 1, which can swing around the horizontal X direction, allows the present invention to process steps with required slopes.
[0050] Reference Figure 6 The driving mechanism in this embodiment includes a driving structure 5 and a screw mechanism 50. The driving structure 5 is fixed on the base 4, and the screw mechanism 50 is disposed on the base 4. The screw of the screw mechanism 50 is threadedly connected to the sliding block 7. The screw of the screw mechanism 50 is driven by the driving structure 5 to drive the screw of the screw mechanism 50 to slide along the guide groove 12.
[0051] It should be noted that the drive structure in this embodiment can be a servo motor. Of course, in other embodiments, the drive structure can also be an adjustment component that drives the screw of the aforementioned screw mechanism 50 to drive the sliding block 7 to slide along the guide groove 12, and this is not limited here.
[0052] Reference Figure 4 , Figure 6The locking structure of this embodiment includes a second locking member 6, a waist-shaped groove 40, and a threaded hole 14. The threaded hole 14 is opened on the side of the worktable 1 facing away from the shaft hole. The threaded hole 14 extends vertically and penetrates the upper and lower surfaces of the worktable 1. The waist-shaped groove 40 is opened on the base 4 at the position corresponding to the threaded hole 14. The waist-shaped groove 40 penetrates the upper and lower surfaces of the base 4 and extends in the horizontal Y direction. The second locking member 6 passes through the waist-shaped groove 40 from bottom to top and is threadedly connected to the threaded hole 14 to lock the worktable 1 onto the base 4. When it is necessary to unlock, the second locking member 6 can be loosened.
[0053] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A multi-step profiled copper strip planing-milling process, characterized by, It comprises the following steps: S1, the copper strip to be processed is placed on the workbench, and the freedom of the copper strip in the vertical and horizontal Y directions is limited on the workbench, only allowing the copper strip to move in the horizontal X direction; wherein the horizontal X direction and the horizontal Y direction are in the same plane and perpendicular to each other; S2, the workbench is provided with a plurality of planing and milling assemblies on at least one side in the horizontal Y direction, each group of planing and milling assemblies comprises a driving unit, a milling cutter and an adjusting mechanism, and a plurality of milling cutters are distributed along the horizontal X direction; S3, according to the required milling allowance of the stepped copper strip, the position of each milling cutter in the vertical and horizontal Y directions is adjusted by adjusting each driving unit through each adjusting mechanism; S4, start each driving unit to drive each milling cutter to rotate around the horizontal Y direction; S5, the copper strip placed on the workbench is driven to convey along the horizontal X direction by the feeding mechanism, and a plurality of steps can be milled on the copper strip after the copper strip passes through each milling cutter in turn along the horizontal X direction.
2. A multi-step profiled copper strip planing milling process according to claim 1, characterized in that, The plurality of milling cutters comprise a rough milling cutter A, a rough milling cutter B and a rough milling cutter C, the copper strip passes through the rough milling cutter A, the rough milling cutter B and the rough milling cutter C in turn along the horizontal X direction, the rough milling cutter A is used for rough milling the first step on the copper strip, the rough milling cutter B is used for expanding the width of the first step in the horizontal Y direction, and the rough milling cutter C is used for rough milling the second step on the copper strip on the basis of the first step.
3. A multi-step profiled copper strip planing milling process according to claim 2, characterized in that, The plurality of milling cutters further comprise a fine milling cutter A and a fine milling cutter B, the copper strip passes through the rough milling cutter A, the rough milling cutter B, the rough milling cutter C, the fine milling cutter A and the fine milling cutter B in turn along the horizontal X direction, the fine milling cutter A is used for fine milling the first step with the size expanded by the rough milling cutter B, and the fine milling cutter B is used for fine milling the second step.
4. The process of claim 1, wherein, The workbench can be swingably arranged on the base around the horizontal X direction.
5. The process of claim 1, wherein, A plurality of rotatable compression rollers are arranged on the workbench, each compression roller extends along the horizontal Y direction, and a plurality of compression rollers are uniformly arranged along the horizontal X direction, each compression roller is in rolling contact with the upper surface of the copper strip placed on the workbench.
6. A multi-step profiled copper strip planing milling process according to claim 5, characterized in that, A plurality of adjusting structures are arranged on the workbench, each adjusting structure is used for adjusting the vertical lifting of each compression roller.
7. A multi-step profiled copper strip planing milling process according to claim 6, characterized in that, The adjusting structure comprises two adjusting assemblies, the two adjusting assemblies are arranged on opposite sides of the workbench respectively, each adjusting assembly comprises an adjusting piece, an elastic piece, a fixed frame and a sliding block, the fixed frame is fixed with the workbench, the fixed frame extends in the vertical direction, the adjusting piece is threadedly arranged on the top of the fixed frame in the vertical direction, the bottom of the adjusting piece is fixed with one end of the elastic piece, the other end of the elastic piece is fixed with the sliding block, and the sliding block is slidably arranged in the fixed frame in the vertical direction; wherein one end of the compression roller is rotatably arranged on the sliding block of one adjusting assembly, and the other end of the compression roller is rotatably arranged on the sliding block of the other adjusting assembly.
8. The process of claim 1, wherein, Rollers and limiting plates are arranged on opposite sides of the surface of the workbench respectively, the limiting plate is in sliding contact with one side of the copper strip placed on the workbench, and the roller is in rolling contact with the other side of the copper strip.
9. A multi-step profiled copper strip planing milling process according to claim 8, characterized in that, The limiting plate can be locked on the workbench by the locking piece along the horizontal Y direction.
10. The process of claim 1, wherein, A plurality of planing and milling assemblies are arranged on opposite sides of the workbench in the horizontal Y direction.