Lower control arm stamping die
By setting a conical positioning mechanism on the lower control arm stamping die, the upper and lower dies are precisely aligned, solving the problem of burrs caused by inaccurate die positioning and improving stamping quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUANCHENG HONGRUI MACHINERY MFG
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-14
AI Technical Summary
The existing lower control arm stamping die produces burrs during the punching process due to inaccurate die positioning, which affects production quality and efficiency.
A first positioning mechanism and a second positioning mechanism are respectively set in the upper die part and the lower die part. The precise alignment of the upper and lower dies is achieved through the cooperation of the conical structure, ensuring that the axis of the upper and lower dies is consistent during the stamping process.
It effectively reduces punching burrs, improves stamping accuracy and quality, reduces scrap rate, enhances mold stability and durability, and reduces production costs.
Smart Images
Figure CN224487355U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of stamping die technology, and specifically relates to a lower control arm stamping die. Background Technology
[0002] In the automotive chassis structural component manufacturing field, the lower control arm, as a key load-bearing component of the suspension system, is typically made from high-strength steel plates through processes such as stamping, blanking, punching, and flanging. Existing production lines generally use universal punching dies consisting of punches, dies, and guide parts to process round or irregularly shaped holes. The die relies on guide pillars and guide bushings to achieve alignment of the upper and lower dies, and then the punch directly acts on the sheet metal, completing the shearing process with the cooperation of the die cutting edge.
[0003] Due to the complex shape and thick sheet metal of the lower control arm, high punching pressure and a stable die closure are required during the punching process. However, the guide clearance of traditional dies gradually increases with wear, and slight misalignment can easily occur between the upper and lower dies at the moment of closure. The punch and die cutting edges cannot remain completely coaxial, resulting in tearing and burrs at the shearing edge. The presence of burrs not only affects subsequent welding and assembly but also requires additional manual or mechanical deburring processes, increasing production costs and cycle time.
[0004] To reduce the rate of burrs, some companies add elastic pressure devices to the molds or use higher-grade alloy steel to manufacture the cutting edges, but the effects are limited. Pressure devices can only improve the positioning of the sheet metal and cannot completely eliminate mold misalignment, while higher-grade steel, although extending the life of the cutting edge, cannot compensate for the coaxiality error caused by the guide clearance. Utility Model Content
[0005] In view of this, the present invention provides a lower control arm stamping die, which can solve the problem of burrs caused by inaccurate die positioning during lower control arm punching, thereby improving punching quality and production efficiency.
[0006] This utility model is implemented as follows:
[0007] This utility model provides a lower control arm stamping die, including an upper die part and a lower die part. The upper die part is a cylindrical protrusion, and the lower die part is a cylindrical recess adapted to the upper die part, used to cooperate with the upper die part to stamp the part. A first positioning mechanism and a second positioning mechanism for positioning the upper die part are respectively provided at the bottom of the upper die part and the center of the lower die part. The first positioning mechanism is a conical protrusion located at the center of the bottom of the upper die part, and the second positioning mechanism is a recess located at the center of the lower die part adapted to the first positioning mechanism.
[0008] The technical effects of the lower control arm stamping die provided by this utility model are as follows: the first positioning mechanism and the second positioning mechanism cooperate with each other to facilitate positioning when the upper die part falls, thereby facilitating the alignment of the upper die part and the lower die part and reducing burrs generated during stamping and punching.
[0009] Based on the above technical solution, the lower control arm stamping die of this utility model can be further improved as follows:
[0010] The axis of the first positioning mechanism is aligned with the axis of the upper mold part, and the axis of the second positioning mechanism is aligned with the axis of the lower mold part.
[0011] The beneficial effects of adopting the above-mentioned improved scheme are as follows: When the upper die part moves down, the first positioning mechanism guides the upper die part to align with the axis of the lower die part, ensuring that the upper and lower dies always remain coaxially aligned during the stamping process, avoiding stamping errors caused by eccentricity, improving stamping accuracy, and reducing burrs and scrap rate.
[0012] Furthermore, the bottom diameter of the first positioning mechanism is equal to 1 / 3 of the diameter of the upper mold portion.
[0013] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the proportional design ensures positioning accuracy while avoiding the impact of an excessively large positioning mechanism on the strength of the mold structure, thus balancing positioning stability and overall mold rigidity.
[0014] Furthermore, the angle between the hypotenuse and the bottom edge of the first positioning mechanism section is 30°~60°.
[0015] The beneficial effects of adopting the above-mentioned improvement scheme are: this angle range provides good guiding performance, which not only facilitates the smooth introduction of the upper mold into the lower mold, but also effectively resists lateral forces and prevents mold jamming or wear.
[0016] Furthermore, the hypotenuse of the first positioning mechanism's cross-section is parabolic.
[0017] The beneficial effects of adopting the above-mentioned improvement scheme are: the parabolic hypotenuse has a smoother transition curve, which can further reduce the impact force and frictional resistance when the upper die falls, and improve the service life and operational stability of the die.
[0018] Furthermore, the hypotenuse of the first positioning mechanism's cross-section is arc-shaped.
[0019] The advantages of adopting the above-mentioned improved scheme are: the arc-shaped bevel structure is simple and easy to process, and at the same time has good guiding performance, making it suitable for mold design that requires high positioning accuracy but needs to simplify the structure.
[0020] Furthermore, the first positioning mechanism is integrally formed with the upper mold part, and the second positioning mechanism is integrally formed with the lower mold part.
[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the one-piece molding structure improves the connection strength between the positioning mechanism and the mold body, reduces the error and loosening risk caused by welding or assembly, and enhances the overall stability and durability of the mold.
[0022] Furthermore, the bottom center of the second positioning mechanism is a hollow structure, with a width of 1 / 2 of the second positioning mechanism.
[0023] The beneficial effects of adopting the above-mentioned improvement scheme are: the hollow structure facilitates the natural falling off of debris, dust and other impurities generated during the stamping process, avoiding accumulation in the positioning groove and affecting the positioning accuracy, and improving the self-cleaning ability of the mold.
[0024] Furthermore, the side wall of the second positioning mechanism is provided with a guide groove.
[0025] The beneficial effects of adopting the above-mentioned improvement scheme are: the guide channel can guide dust and impurities to be discharged along a specific path, preventing them from accumulating in the positioning mechanism, and further improving the cleanliness and operational reliability of the mold.
[0026] Furthermore, the cross-section of the guide channel is a triangular depression.
[0027] The beneficial effects of adopting the above-mentioned improvement scheme are as follows:
[0028] This utility model provides a lower control arm stamping die, which addresses the problem of burrs easily generated during the punching of lower control arms in existing technologies. It proposes a simple, accurate, and high-precision stamping solution, effectively solving the aforementioned problem. By setting mutually cooperating first and second positioning mechanisms in the upper and lower die sections respectively, precise positioning between the upper and lower dies is achieved, ensuring that the axes of the upper and lower dies remain consistent during the stamping process. This avoids burrs caused by die offset or eccentricity, effectively reducing burr generation during punching and improving the quality and precision of the stamped parts.
[0029] The positioning mechanism provided by this utility model has a simple structure, is easy to process and manufacture, and reduces the manufacturing cost of the mold. Meanwhile, the integrated design of the positioning mechanism and the mold body improves the connection strength between them, reduces errors and loosening risks caused by welding or assembly, and enhances the overall stability and durability of the mold. Furthermore, the hollow structure at the bottom center of the second positioning mechanism and the guide grooves on the side walls effectively guide the discharge of dust and impurities generated during the stamping process, preventing accumulation in the positioning grooves and affecting positioning accuracy, further improving the mold's self-cleaning ability and operational reliability.
[0030] Through the above structural design, the lower control arm stamping die provided by this utility model not only effectively solves the problem of punching burrs, but also improves the service life and operational stability of the die, reduces maintenance costs, and is suitable for large-scale industrial production, with significant economic benefits and practical value. Attached Figure Description
[0031] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 A cross-sectional view of a first embodiment of a lower control arm stamping die;
[0033] Figure 2 A cross-sectional view of a first embodiment of a lower control arm stamping die;
[0034] Figure 3 A cross-sectional view of a first embodiment of a lower control arm stamping die;
[0035] The attached diagram lists the components represented by each number as follows:
[0036] 1. Upper mold part; 11. First positioning mechanism; 2. Lower mold part; 21. Second positioning mechanism. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0038] like Figure 1 The image shows a first embodiment of a lower control arm stamping die provided by this utility model. In this embodiment, it includes an upper die part 1 and a lower die part 2. The upper die part 1 is a cylindrical protrusion, and the lower die part 2 is a cylindrical recess adapted to the upper die part 1, used to cooperate with the upper die part 1 to stamp the part. A first positioning mechanism 11 and a second positioning mechanism 21 for positioning the upper die part 1 are respectively provided at the bottom of the upper die part 1 and the center of the lower die part 2. The first positioning mechanism 11 is a conical protrusion located at the center of the bottom of the upper die part 1, and the second positioning mechanism 21 is a recess located at the center of the lower die part 2 adapted to the first positioning mechanism 11.
[0039] In the above technical solution, the axis of the first positioning mechanism 11 is aligned with the axis of the upper mold part 1, and the axis of the second positioning mechanism 21 is aligned with the axis of the lower mold part 2.
[0040] Furthermore, in the above technical solution, the bottom diameter of the first positioning mechanism 11 is equal to 1 / 3 of the diameter of the upper mold part 1.
[0041] Furthermore, in the above technical solution, the angle between the hypotenuse and the bottom edge of the first positioning mechanism 11 is 30°~60°.
[0042] Furthermore, in the above technical solution, the first positioning mechanism 11 is integrally formed with the upper mold part 1, and the second positioning mechanism 21 is integrally formed with the lower mold part 2.
[0043] Furthermore, in the above technical solution, the bottom center of the second positioning mechanism 21 is a hollow structure with a width of 1 / 2 of the second positioning mechanism 21.
[0044] Furthermore, in the above technical solution, the side wall of the second positioning mechanism 21 is provided with a guide groove.
[0045] Furthermore, in the above technical solution, the cross-section of the guide channel is a triangular depression.
[0046] like Figure 2 The image shows a second embodiment of a lower control arm stamping die provided by this utility model. In this embodiment, it includes an upper die part 1 and a lower die part 2. The upper die part 1 is a cylindrical protrusion, and the lower die part 2 is a cylindrical recess adapted to the upper die part 1, used to cooperate with the upper die part 1 to stamp the part. A first positioning mechanism 11 and a second positioning mechanism 21 for positioning the upper die part 1 are respectively provided at the bottom of the upper die part 1 and the center of the lower die part 2. The first positioning mechanism 11 is a conical protrusion located at the center of the bottom of the upper die part 1, and the second positioning mechanism 21 is a recess located at the center of the lower die part 2 adapted to the first positioning mechanism 11.
[0047] In the above technical solution, the axis of the first positioning mechanism 11 is aligned with the axis of the upper mold part 1, and the axis of the second positioning mechanism 21 is aligned with the axis of the lower mold part 2.
[0048] Furthermore, in the above technical solution, the hypotenuse of the cross section of the first positioning mechanism 11 is parabolic.
[0049] Furthermore, in the above technical solution, the first positioning mechanism 11 is integrally formed with the upper mold part 1, and the second positioning mechanism 21 is integrally formed with the lower mold part 2.
[0050] Furthermore, in the above technical solution, the bottom center of the second positioning mechanism 21 is a hollow structure with a width of 1 / 2 of the second positioning mechanism 21.
[0051] Furthermore, in the above technical solution, the side wall of the second positioning mechanism 21 is provided with a guide groove.
[0052] Furthermore, in the above technical solution, the cross-section of the guide channel is a triangular depression.
[0053] like Figure 3 The image shows a third embodiment of a lower control arm stamping die provided by this utility model. In this embodiment, it includes an upper die part 1 and a lower die part 2. The upper die part 1 is a cylindrical protrusion, and the lower die part 2 is a cylindrical recess adapted to the upper die part 1, used to cooperate with the upper die part 1 to stamp the part. A first positioning mechanism 11 and a second positioning mechanism 21 for positioning the upper die part 1 are respectively provided at the bottom of the upper die part 1 and the center of the lower die part 2. The first positioning mechanism 11 is a conical protrusion located at the center of the bottom of the upper die part 1, and the second positioning mechanism 21 is a recess located at the center of the lower die part 2 adapted to the first positioning mechanism 11.
[0054] In the above technical solution, the axis of the first positioning mechanism 11 is aligned with the axis of the upper mold part 1, and the axis of the second positioning mechanism 21 is aligned with the axis of the lower mold part 2.
[0055] Furthermore, in the above technical solution, the inclined side of the cross section of the first positioning mechanism 11 is arc-shaped.
[0056] Furthermore, in the above technical solution, the first positioning mechanism 11 is integrally formed with the upper mold part 1, and the second positioning mechanism 21 is integrally formed with the lower mold part 2.
[0057] Furthermore, in the above technical solution, the bottom center of the second positioning mechanism 21 is a hollow structure with a width of 1 / 2 of the second positioning mechanism 21.
[0058] Furthermore, in the above technical solution, the side wall of the second positioning mechanism 21 is provided with a guide groove.
[0059] Furthermore, in the above technical solution, the cross-section of the guide channel is a triangular depression.
[0060] Specifically, the principle of this invention is as follows: when the upper die moves downward, the first positioning mechanism (conical protrusion) located at the bottom of the upper die first enters the second positioning mechanism (conical recess) in the center of the lower die. Because the conical structures of the first and second positioning mechanisms cooperate with each other, they can automatically guide the upper die and lower die to align their axes, ensuring that the upper and lower dies remain coaxial during the stamping process.
[0061] As the upper die continues to move downwards, the cylindrical protrusions of the upper die and the cylindrical recesses of the lower die work together to stamp the lower control arm sheet material placed on the lower die. Because the upper and lower dies are precisely positioned, the dies will not shift or become eccentric during the stamping process, effectively preventing burrs from forming at the punched edges.
[0062] After stamping is completed, the upper die moves upward, and the first positioning mechanism disengages from the second positioning mechanism, completing one stamping cycle. By repeating the above process, continuous stamping of the lower control arm can be achieved, ensuring stable and reliable punching quality.
Claims
1. A lower control arm stamping die, comprising an upper die portion and a lower die portion, wherein the upper die portion is a cylindrical protrusion and the lower die portion is a cylindrical recess adapted to the upper die portion, for cooperating with the upper die portion to stamp parts, characterized in that, A first positioning mechanism and a second positioning mechanism are respectively provided at the bottom of the upper mold part and the center of the lower mold part for positioning the upper mold part. The first positioning mechanism is a conical protrusion located at the center of the bottom of the upper mold part, and the second positioning mechanism is a recess located at the center of the lower mold part that corresponds to the first positioning mechanism.
2. The lower control arm stamping die according to claim 1, characterized in that, The axis of the first positioning mechanism is aligned with the axis of the upper mold part, and the axis of the second positioning mechanism is aligned with the axis of the lower mold part.
3. The lower control arm stamping die according to claim 2, characterized in that, The bottom diameter of the first positioning mechanism is equal to 1 / 3 of the diameter of the upper mold.
4. A lower control arm stamping die according to claim 3, characterized in that, The angle between the hypotenuse and the bottom edge of the first positioning mechanism section is 30°~60°.
5. A lower control arm stamping die according to claim 4, characterized in that, The hypotenuse of the first positioning mechanism's cross-section is parabolic.
6. A lower control arm stamping die according to claim 5, characterized in that, The hypotenuse of the first positioning mechanism is arc-shaped.
7. A lower control arm stamping die according to claim 6, characterized in that, The first positioning mechanism is integrally formed with the upper mold part, and the second positioning mechanism is integrally formed with the lower mold part.
8. A lower control arm stamping die according to claim 7, characterized in that, The bottom center of the second positioning mechanism is hollow, and its width is 1 / 2 of that of the second positioning mechanism.
9. A lower control arm stamping die according to claim 8, characterized in that, The side wall of the second positioning mechanism is provided with a guide groove.
10. A lower control arm stamping die according to claim 9, characterized in that, The cross-section of the guide channel is a triangular depression.