Stamping processing method of long aluminum guide rail
By using a multi-step stamping die processing method, the problems of springback and surface damage during the stamping process of long aluminum guide rails were solved, achieving high-quality aluminum guide rail forming, reducing costs and ensuring forming reliability.
Patent Information
- Application Number
- CN202511936125.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-22
- Publication Date
- 2026-02-03
AI Technical Summary
Long aluminum guide rails suffer from problems such as excessive springback, surface indentation, and scratches during the stamping process, and the processing quality is unstable.
A multi-step stamping die processing method is adopted, including preliminary punching, multi-angle forming, bending and punching. By reasonably setting the included angle and R-angle radius, combined with rebound compensation and interference treatment, the reliability and stability of forming are ensured.
This achieved acceptable forming reliability and springback control for long aluminum guide rails, reduced processing costs, prevented scratches and tears on parts, and ensured product quality.
Smart Images
Figure CN121446907A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to an aluminum processing method, and more specifically to a stamping processing method for long aluminum guide rails. Background Technology
[0002] With the development of lightweight vehicles, high-strength steel and aluminum alloys are now used for automotive structural components. The manufacturing process for aluminum alloy stamping dies differs from that for iron stamping.
[0003] The structure of the long aluminum guide rail is as follows Figures 1-3 As shown, the original part was made of stamped iron. After being changed to aluminum, the material grade used is AL-GUSS / AL-KNET MBN 51253, with a yield strength of 128MPa, tensile strength of 280MPa, and a material thickness of 2.0mm. During stamping, the magnitude of the pressure significantly affects the shape, and the springback after compression at the radius (R-angle) is also quite noticeable. Furthermore, the surface indentation and scratches on aluminum parts must be considered. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to provide a stamping process for long aluminum guide rails that is reliable in forming, has low springback, and stable product quality.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A stamping process for a long aluminum guide rail, comprising the following steps:
[0006] Step 1: Perform preliminary punching on the sheet metal to obtain workpiece sheet;
[0007] Step 2: Using the first stamping die, set the top surface of the workpiece to a 5° angle with the horizontal plane, with the long side at the higher position. Using the top surface as the reference plane, form the vertical side perpendicular to the top surface on the side of the top surface near the long side, and the sloping surface on the side of the top surface away from the long side. The diameters of the first and second R angles at the lower and upper parts of the sloping surface are set to 7 and 4 mm respectively, and the third and fourth diameters at the upper and lower parts of the vertical side are set to 6 and 6 mm respectively.
[0008] Step 3: Using the second stamping die, set the top surface of the workpiece at a 5° angle to the horizontal plane, with the long side at a higher position. Using the top surface as the reference plane, form the side edge of the short side of the workpiece that is perpendicular to the top surface; at the same time, initially stamp and bend the long end plate on the long side, with a bending angle of 120° and a bending radius of 7mm.
[0009] Step four, the workpiece upper surface is set to be 5° angle with the horizontal plane by the third stamping die, and the long side is located at the low place, taking the upper surface as the reference surface, the lower forming seat of the lower die of the third stamping die is provided with avoiding notches at the vertical side edge corresponding to the upper short side of the workpiece and the vertical side surface of the upper surface close to the long side, and the long end plate is formed vertically to the upper surface by stamping at the long side, and the R angle radius is 7mm;
[0010] Step five, the workpiece upper surface is set to be 5° angle with the horizontal plane by the fourth stamping die, and the long side is located at the high place, taking the upper surface as the reference surface, the long side of the workpiece is formed by downward bending, the bending angle is 90° to make the long side L-shaped, and the R angle radius is 6mm; the shaping radius of the first, second, third and fourth R angles is 8, 4, 4.7 and 4mm respectively; the long end plate is shaped by stamping to be in the horizontal state;
[0011] Step six, the workpiece upper three-step part is punched by the fifth stamping die;
[0012] Step seven, the vertical plate on the L-shaped long side of the workpiece is punched by the sixth stamping die, so that the workpiece finished product is obtained.
[0013] As a preferred scheme, in the step two, the long side is subjected to rebound compensation stamping, so that the free end of the long side is offset 20mm to the direction close to the workpiece upper surface.
[0014] As a preferred scheme, in the step four, the flange angle of the upper forming block of the long end plate on the upper side of the upper die of the third stamping die is provided with an interference of 0.1-0.2mm.
[0015] As a preferred scheme, in the step six, the long end plate is shaped again by the fifth stamping die.
[0016] As a preferred scheme, in the step five, the long end plate is shaped by the fourth stamping die, and the R angle radius is 10mm.
[0017] The beneficial effects of the present application are:
[0018] The method sets the processing content of each process reasonably to complete the bending processing of the aluminum plate through as few stamping processing processes as possible, reduces the processing cost, and ensures that the springback deformation of the workpiece after processing is within an acceptable range, thereby ensuring the processing quality. By setting the upper top surface of the workpiece to a state of 5° angle with the horizontal plane in the second and third processes, and the long side is located at a high position, the top surface is used as a reference surface to form the workpiece, thereby improving the part scratching and pulling injury problems that easily occur when the mold is opened and the part is taken after stamping; for the long end plate part prone to springback, the third process is pre-bent, and then bent to the right position by the fourth process, so that the bending is reliable and not prone to springback.
[0019] In step two, the long edge part is subjected to springback compensation stamping, so that the free end of the long edge part is offset by 20MM towards the workpiece top surface from the parallel state of the long edge part and the workpiece top surface, to ensure that the part after stamping can still meet the size requirements after springback.
[0020] In step four, the flange angle of the upper forming block of the long end plate on the upper side of the upper die of the third stamping die is set to an interference amount of 0.1-0.2MM, which ensures that the long end plate of the workpiece is formed in place to ensure the reliability of the long end plate forming.
[0021] In step six, the fifth stamping die is used to reshape the long end plate again to further ensure the reliability of the long end plate forming.
[0022] In step five, the long end plate is shaped by the fourth stamping die, and the bending R angle radius is 10mm, which can better ensure the stability of the long end plate after final forming. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a structural schematic diagram of a long aluminum guide rail.
[0024] Figure 2 It is another angle structural schematic diagram of a long aluminum guide rail.
[0025] Figure 3 It is a side view structural schematic diagram of a long aluminum guide rail.
[0026] Figure 4 It is a schematic diagram of the workpiece after step two processing.
[0027] Figure 5 It is a schematic diagram of the workpiece after step three processing.
[0028] Figure 6 It is a schematic diagram of the workpiece after step three processing.
[0029] Figure 7 It is a schematic diagram of the workpiece after step four processing.
[0030] Figure 8 Figure 5 is a schematic view of the workpiece after step five processing.
[0031] Figure 9 Figure 6 is another angle schematic view of the workpiece after step five processing.
[0032] Figure 10 Figure 7 is a schematic view of the workpiece after step six processing. DETAILED DESCRIPTION
[0033] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.
[0034] As shown in Figures 1-10 a stamping processing method of a long aluminum guide rail, comprising the following steps:
[0035] Step one, the plate is preliminarily punched to obtain a workpiece piece;
[0036] Step two, the upper top surface of the workpiece is set to be at a 5° angle with the horizontal plane, and the long side is located at the high position, the vertical side surface of the top surface near the long side part is formed as a reference surface, the inclined surface of the top surface away from the long side part, the first and second R angle diameters of the lower and upper parts of the inclined surface are respectively set to 7 and 4 mm, and the third and fourth diameters of the upper and lower parts of the vertical side surface are respectively set to 6 and 6 mm; and the long side part is subjected to rebound compensation stamping, so that the free end of the long side part is offset by 20 mm in the direction close to the top surface of the workpiece
[0037] Step three, the upper top surface of the workpiece is set to be at a 5° angle with the horizontal plane, and the long side is located at the high position, the side vertical edge of the top surface of the workpiece is formed as a reference surface, and the long end plate is preliminarily stamped and bent on the long side, and the bending angle of the long end plate is 120° and the bending R angle radius is 7 mm;
[0038] Step four, the upper top surface of the workpiece is set to be at a 5° angle with the horizontal plane, and the long side is located at the low position, the top surface is taken as a reference surface, and the lower forming seat of the lower die of the third stamping die is provided with an avoiding notch at the positions corresponding to the side vertical edge of the top surface of the workpiece and the vertical side surface of the top surface near the long side part; at the same time, the long end plate is stamped and formed to be perpendicular to the top surface on the long side, the bending R angle radius is 7 mm, and the flanging convex angle of the upper forming block of the upper die is set to have an interference amount of 0.1-0.2 mm;
[0039] Step five, through the fourth stamping die, the upper top surface of the workpiece is set to be 5° angle with the horizontal plane, and the long side is located at the high place, taking the top surface as the reference surface, the upper long side of the workpiece is bent downward to form, the bending angle is 90° to make the long side L-shaped, the bending R angle radius is 6mm; the shaping radius of the first, second, third and fourth R angle is 8, 4, 4.7, 4mm respectively; the long end plate is stamped and shaped to make it in the horizontal state and make the bending R angle radius 10mm;
[0040] Step six, through the fifth stamping die, the upper three-step part of the workpiece is punched, and the long end plate is shaped again;
[0041] Step seven, through the sixth stamping die, the vertical plate on the L-shaped long side of the workpiece is punched to obtain the finished product of the workpiece.
[0042] The above examples only illustrate the principles and effects of the present application, and part of the examples are used, but not for limiting the present application; it should be pointed out that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application.
Claims
1. A stamping method of long aluminum guide rail, comprising the following steps: Step one, the plate is preliminarily punched to obtain a workpiece piece; Step two, the upper top surface of the workpiece is set to be 5° angle with the horizontal plane by the first stamping die, and the long side is located at the high position, the upper top surface is taken as the reference surface, the vertical side surface of the top surface near the long side part, and the inclined surface of the top surface away from the long side part are formed, the first and second R angle diameters of the lower and upper parts of the inclined surface are respectively set to 7 and 4 mm, and the third and fourth diameters of the upper and lower parts of the vertical side surface are respectively set to 6 and 6 mm; Step three, the upper top surface of the workpiece is set to be 5° angle with the horizontal plane by the second stamping die, and the long side is located at the high position, the upper top surface is taken as the reference surface, the vertical side edge of the short side of the workpiece is formed; meanwhile, the long end plate is preliminarily punched and bent on the long side, the bending angle of the long end plate is 120° and the bending R angle radius is 7 mm; Step four, the upper top surface of the workpiece is set to be 5° angle with the horizontal plane by the third stamping die, and the long side is located at the low position, the upper top surface is taken as the reference surface, the lower forming seat of the lower die of the third stamping die is provided with avoiding notches at positions corresponding to the vertical side edge of the short side of the workpiece and the vertical side surface of the top surface near the long side part; meanwhile, the long end plate is formed to be perpendicular to the top surface on the long side by stamping, and the bending R angle radius is 7 mm; Step five, the upper top surface of the workpiece is set to be 5° angle with the horizontal plane by the fourth stamping die, and the long side is located at the high position, the upper top surface is taken as the reference surface, the long side part of the workpiece is downward bent and formed, the bending angle is 90° to make the long side part be L-shaped, the bending R angle radius is 6 mm; the first, second, third and fourth R angles are respectively shaped to have radii of 8, 4, 4.7 and 4 mm; the long end plate is stamped and shaped to be in the horizontal state; Step six, the third step part of the workpiece is punched by the fifth stamping die; Step seven, the vertical plate on the L-shaped long side part of the workpiece is punched by the sixth stamping die, so that the workpiece finished product is obtained.
2. The method of claim 1, wherein: In the step two, the long side part is reversely bounced and compensated to stamp, so that the free end of the long side part is offset 20 mm to the direction close to the top surface of the workpiece from the state that the long side part is parallel to the top surface of the workpiece.
3. The method of claim 1, wherein: the aluminum extrusion is a long aluminum extrusion; and the long aluminum extrusion is a long aluminum rail. In the step four, the flange angle of the upper forming block of the long end plate on the upper side of the upper die of the third stamping die is set to have an interference of 0.1-0.2 mm.
4. The method of claim 1, wherein: In the step six, the long end plate is reshaped by the fifth stamping die.
5. The method of claim 1, wherein: the aluminum extrusion is a long aluminum extrusion; and the long aluminum extrusion is a long aluminum rail. In the step five, the long end plate is stamped and shaped by the fourth stamping die to have a bending R angle radius of 10 mm.