Flange r angle correction die

Abstract

The utility model belongs to mould field especially a kind of flange R angle correction mould, it includes workbench, the one side fixed mounting of workbench is equipped with stamping support, the top of stamping support is equipped with stamping groove, the inboard fixed mounting of stamping groove is equipped with first air cylinder;The top fixed mounting of workbench is equipped with cushion block, the top of cushion block is connected with female die by flange. The utility model can guide material directional flow to R angle area, solve the problem of insufficient material supply of single punch extrusion, fill R angle gap sufficiently, eliminate depression and wave pattern;Make R angle completely adhere to cavity camber, improve the precision and accuracy of workpiece, simultaneously, by disc spring and return spring combination, the instantaneous impact force when jacking can be absorbed, avoid jacking pedestal and cushion block rigid impact, prevent workpiece from impact and produce indentation or deformation, improve the stability of processing.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a flange R-angle correction mold. Background Technology

[0002] Correction dies are specialized tooling equipment used for secondary adjustments to the dimensional accuracy, shape errors, or surface quality of machined parts. Through the design of specific punch and die structures, positioning components, and guiding mechanisms, driven by equipment such as presses, precise pressure or shearing force is applied to defective areas of the parts to achieve dimensional calibration, deformation correction, burr removal, or surface finish improvement. These dies are adaptable to various part types and are widely used in automotive, machinery, and electronics manufacturing industries, effectively addressing initial machining errors and ensuring the assembly performance and product quality stability of parts.

[0003] In the flange manufacturing process, the radius (R-angle) is a key transition structure connecting the flange end face and side. Its processing quality directly affects product performance. Existing dies rely solely on a single punch for extrusion, with no guiding or constraining of the material flow direction. Due to insufficient material supply, the R-angle area is prone to forming local gaps or depressions, failing to fully conform to the curved surface of the die cavity. This results in actual dimensions not matching design standards. Furthermore, scratches, depressions, burrs, or excessive roughness are easily generated during processing, disrupting the smooth transition of the R-angle. These problems directly affect the flange assembly performance. Therefore, substandard R-angles require manual rework, increasing production costs and significantly impacting processing efficiency.

[0004] Therefore, we propose a flange radius correction mold to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flange radius correction mold includes a worktable, a stamping bracket fixedly mounted on one side of the worktable, a stamping groove formed on the top of the stamping bracket, and a first cylinder fixedly mounted on the inner side of the stamping groove; a pad block fixedly mounted on the top of the worktable, and a die connected to the top of the pad block via a flange.

[0007] Specifically, a second cylinder and a pressure sleeve are fixedly installed on the piston end of the first cylinder, with the second cylinder located inside the pressure sleeve.

[0008] Specifically, a punch is fixedly installed on the piston end of the second cylinder. The punch is slidably installed inside the pressure sleeve, and the bottom end of the punch is located below the pressure sleeve.

[0009] Specifically, a pressure shoulder is fixedly installed on the top of the die to facilitate extrusion of the workpiece, direct the material flow to the R-angle of the workpiece opening, fill the gap, and thus reduce the R-angle.

[0010] Specifically, the workbench has a top support chamber inside, and a top support cylinder is fixedly installed on the bottom inner wall of the top support chamber.

[0011] Specifically, a top support base is fixedly installed on the piston end of the top support cylinder, a lifting groove is provided at the bottom of the pad, the top support chamber is connected to the lifting groove, and the top support base is slidably installed on the inner side of the lifting groove, so as to facilitate the movement of the top support base by the top support cylinder.

[0012] Specifically, a push rod is fixedly installed on the top of the top support base. The push rod slides through the pad block and extends into the inside of the die cavity, which facilitates the ejection of the stamped workpiece.

[0013] Specifically, a return spring and a disc spring are sleeved on the outer side of the top rod. The return spring is located inside the disc spring. The top ends of the return spring and the disc spring are fixedly connected to the top inner wall of the lifting groove, and the bottom ends of the return spring and the disc spring are fixedly connected to the top of the top support base. The return spring and the disc spring can absorb the instantaneous impact force during the top support, and prevent the top support base from rigidly colliding with the pad block.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by the coordinated action of the pressure shoulder, punch, and pressure sleeve, the material can be guided to flow directionally to the R-corner area, solving the problem of insufficient material supply when a single punch is used to squeeze, fully filling the R-corner gap, and eliminating depressions and wavy lines; the R-corner can completely fit the cavity surface, improving the precision and accuracy of the workpiece; at the same time, the combination of disc spring and return spring can absorb the instantaneous impact force during the top support, avoiding rigid collision between the top support base and the pad block, preventing the workpiece from being indented or deformed due to impact, and improving the stability of processing. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a flange R-angle correction mold proposed in this utility model;

[0016] Figure 2 This is a three-dimensional cross-sectional view of a flange R-angle correction mold proposed in this utility model;

[0017] Figure 3 This is a three-dimensional cross-sectional view of the die, ejector rod, return spring, disc spring, top support base, and top support cylinder of a flange R-angle correction mold proposed in this utility model.

[0018] Figure 4This is a front view of the three-dimensional structure of a flange R-angle correction mold proposed in this utility model;

[0019] Figure 5 for Figure 4 Enlarged view of point A.

[0020] In the diagram: 1. Workbench; 2. Stamping support; 3. First cylinder; 4. Pressing sleeve; 5. Second cylinder; 6. Punch; 7. Die; 8. Ejector pin; 9. Return spring; 10. Disc spring; 11. Top support base; 12. Top support cylinder; 13. Pressing shoulder; 14. Pad block. Detailed Implementation

[0021] Reference Figure 1-5 A flange R-angle correction mold includes a workbench 1, a stamping bracket 2 fixedly installed on one side of the workbench 1, a stamping groove opened on the top of the stamping bracket 2, and a first cylinder 3 fixedly installed on the inner side of the stamping groove; a pad block 14 fixedly installed on the top of the workbench 1, and a die 7 connected to the top of the pad block 14 through a flange.

[0022] In this embodiment, a second cylinder 5 and a pressing sleeve 4 are fixedly installed on the piston end of the first cylinder 3, and the second cylinder 5 is located inside the pressing sleeve 4.

[0023] In this embodiment, a punch 6 is fixedly installed on the piston end of the second cylinder 5. The punch 6 is slidably installed inside the pressure sleeve 4, and the bottom end of the punch 6 is located below the pressure sleeve 4.

[0024] In this embodiment, a pressure shoulder 13 is fixedly installed on the top of the die 7, which facilitates the extrusion of the workpiece, directs the material flow to the R-angle of the workpiece opening, fills the gap, and thus reduces the R-angle.

[0025] In this embodiment, the workbench 1 has a top support chamber inside, and a top support cylinder 12 is fixedly installed on the bottom inner wall of the top support chamber.

[0026] In this embodiment, a top support base 11 is fixedly installed on the piston end of the top support cylinder 12, and a lifting groove is provided at the bottom of the pad block 14. The top support chamber is connected to the lifting groove, and the top support base 11 is slidably installed on the inner side of the lifting groove, so that the top support base 11 can be moved by the top support cylinder 12.

[0027] In this embodiment, a push rod 8 is fixedly installed on the top of the top support base 11. The push rod 8 slides through the pad block 14 and extends into the inner side of the die 7, which facilitates the ejection of the stamped workpiece.

[0028] In this embodiment, a return spring 9 and a disc spring 10 are sleeved on the outer side of the top rod 8. The return spring 9 is located inside the disc spring 10. The top ends of the return spring 9 and the disc spring 10 are fixedly connected to the top inner wall of the lifting groove, and the bottom ends of the return spring 9 and the disc spring 10 are fixedly connected to the top of the top support base 11. The return spring 9 and the disc spring 10 can absorb the instantaneous impact force during the top support, and avoid the top support base 11 from rigidly colliding with the pad block 14.

[0029] Working principle: When correcting the flange radius (R-angle), the operator places the workpiece in the die 7, then starts the equipment. The second cylinder 5 is activated, driving the punch 6 downward to compress the workpiece, forcing it into the die 7. The operator then controls the second cylinder 5 and punch 6 to reset, with the bottom of punch 6 positioned below the pressure sleeve 4. At this point, the operator activates the first cylinder 3, which drives the pressure sleeve 4, along with the second cylinder 5 and punch 6, downward. The pressure sleeve 4 compresses the annular structure of the workpiece, and the punch 6 fills the inner side of the workpiece. At this point, the die 7... The pressure shoulder 13 at the top contacts the workpiece, squeezing it and directing the material flow to the R-angle of the workpiece opening, filling the gap and thus reducing the R-angle. After the stamping is completed, the first cylinder 3 and the second cylinder 5 are reset. The operator starts the top support cylinder 12, which drives the top support base 11 and the push rod 8 to move upward. The top support base 11 approaches the pad 14. At this time, the disc spring 10 and the return spring 9 are compressed, absorbing the instantaneous impact force through compression deformation. This prevents the top support base 11 from rigidly colliding with the pad 14, and also prevents the instantaneous impact force from being too large and damaging the workpiece.

[0030] The technological advancements achieved by this invention compared to existing technologies are as follows: it can guide the material to flow directionally to the R-corner area, solving the problem of insufficient material supply when extruding material by a single punch 6, fully filling the R-corner gap, eliminating depressions and wavy lines, and ensuring that the R-corner completely fits the cavity surface, thus improving the precision and accuracy of the workpiece. At the same time, the combination of disc spring 10 and return spring 9 can absorb the instantaneous impact force during the top support, avoiding rigid collision between the top support base 11 and the pad block 14, preventing the workpiece from being indented or deformed due to impact, and improving the stability of processing.

Claims

1. A flange radius correction mold, characterized in that, Includes a workbench (1), a stamping bracket (2) is fixedly installed on one side of the workbench (1), a stamping groove is opened on the top of the stamping bracket (2), and a first cylinder (3) is fixedly installed on the inner side of the stamping groove; A pad (14) is fixedly installed on the top of the workbench (1), and a die (7) is connected to the top of the pad (14) via a flange.

2. The flange radius correction mold according to claim 1, characterized in that, A second cylinder (5) and a pressure sleeve (4) are fixedly installed on the piston end of the first cylinder (3), and the second cylinder (5) is located inside the pressure sleeve (4).

3. A flange radius correction mold according to claim 2, characterized in that, A punch (6) is fixedly installed on the piston end of the second cylinder (5). The punch (6) is slidably installed on the inner side of the pressure sleeve (4), and the bottom end of the punch (6) is located below the pressure sleeve (4).

4. A flange radius correction mold according to claim 1, characterized in that, A pressure shoulder (13) is fixedly installed on the top of the die (7).

5. A flange radius correction mold according to claim 1, characterized in that, The workbench (1) has a top support chamber inside, and a top support cylinder (12) is fixedly installed on the bottom inner wall of the top support chamber.

6. A flange radius correction mold according to claim 5, characterized in that, A top support base (11) is fixedly installed on the piston end of the top support cylinder (12). A lifting groove is provided at the bottom of the pad (14). The top support chamber is connected to the lifting groove. The top support base (11) is slidably installed on the inner side of the lifting groove.

7. A flange radius correction mold according to claim 6, characterized in that, A top rod (8) is fixedly installed on the top of the top support base (11), and the top rod (8) slides through the pad (14) and extends into the inner side of the die (7).

8. A flange radius correction mold according to claim 7, characterized in that, The top rod (8) is fitted with a return spring (9) and a disc spring (10) on its outer side. The return spring (9) is located inside the disc spring (10). The top ends of the return spring (9) and the disc spring (10) are fixedly connected to the top inner wall of the lifting groove. The bottom ends of the return spring (9) and the disc spring (10) are fixedly connected to the top of the top support base (11).

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