A forging die for an automotive control arm and its forging process

Abstract

The present invention relates to the technical field of detection equipment, and particularly relates to a forging device for an automotive control arm and its forging process, including the following steps: First, heat the blank and then place it into the forging die. Secondly, extrude the blank in the forging die to cause plastic deformation of the blank. Finally, cut off the scrap material overflowing from the edge of the inner cavity of the forging die. In the present invention, a trimming device is arranged between the upper die and the lower die of the forging die, and a cutting member provided at the lower end of the cutting tool is used to cut the overflow material after deformation of the forging under pressure. By setting the adjusting member, not only can the position of the cutting member be adjusted according to the shape of the required forging die, but also the cutting member can cut the overflow material in a sawing cutting manner during cutting, ensuring the cutting quality. At the same time, the contact area between the cutting member and the workpiece is always small, and the deformation of the forging caused by cutting will not occur.

Description

Technical Field

[0001] The present invention relates to the technical field of forging devices, and particularly relates to a forging die for an automotive control arm and a forging process thereof. Background Art

[0002] Forging is to physically press a workpiece to be forged through forging equipment using pressure, so that the workpiece undergoes plastic deformation. The automotive control arm also needs to be forged to achieve the required mechanical properties. Usually, for the forging of the control arm, the workpiece to be forged needs to be shaped first, and then the shaped workpiece is subjected to subsequent processing.

[0003] However, there are still certain problems in the prior art during the forging process of automotive control arms. After forging, physical pressure is usually applied to the workpiece by closing the die. After the workpiece in the die is pressed, its structure will inevitably overflow from the die. If not handled in time, it will adhere to the die or the blank after a period of cooling, thus bringing unnecessary trouble and additional inconvenience to the subsequent processes.

[0004] Therefore, a forging die for an automotive control arm and a forging process thereof are proposed to solve the above-mentioned problems. Summary of the Invention

[0005] Technical Problems to be Solved

[0006] In view of the above-mentioned disadvantages of the prior art, the present invention provides a forging die for an automotive control arm and a forging process thereof, which can effectively solve the problem that it is difficult for the additional plastic deformation amount during forging in the prior art to detach from the die.

[0007] Technical Solutions

[0008] To achieve the above object, the present invention is realized through the following technical solutions:

[0009] The present invention provides a forging process for an automotive control arm, including the following steps:

[0010] Step 1: Heat the blank and then place it into the forging die.

[0011] Step 2: Extrude the blank in the forging die to make the blank undergo plastic deformation.

[0012] Step 3: Cut off the scrap material overflowing from the edge of the inner cavity of the forging die.

[0013] A forging die for an automotive control arm includes an upper die, a lower die, and a trimming device. A cavity for accommodating the workpiece is provided on the lower die, and the trimming device is arranged between the upper die and the lower die, and is used for cutting the edge of the workpiece located in the cavity;

[0014] The trimming device includes a movable part, a cutting tool and an adjusting part. The movable part can be guided and moved in a parallel direction along one end of the chamber. The cutting tool is movably installed on the movable part, and includes at least one cutting surface that can maintain the same displacement direction as the movable part. The cutting surface is always vertically attached to the outer edge of the chamber, and the blank corner material overflowing from the edge of the chamber is cut off as the movable part moves. The adjusting part is provided with a plurality of adjusting parts, and one end thereof facing the cutting tool abuts against the side of the cutting tool. The distance between the adjusting part and the chamber is adjustable. By changing the distance between the adjusting part and the chamber, the distance between the contact point between the adjusting part and the cutting tool and the outer edge of the chamber is controlled.

[0015] Furthermore, the lower mold includes a seat body and a positioning plate, the seat body is arranged at the symmetrical end of the upper mold, the positioning plate is detachably installed on the side of the seat body facing the upper mold, and the cavity is arranged on the positioning plate.

[0016] Furthermore, marks for identifying the length and width of the positioning plate are distributed on the end surface of the positioning plate.

[0017] Furthermore, the cutting tool includes a slider, a contact portion and a cutting piece. The slider can be guided and slid toward the side end of the chamber. The contact portion is installed on the slider and always remains parallel to the side end of the chamber. The cutting piece includes at least one slice that is obliquely distributed with the lower mold, and the blade surface of the cutting piece faces the displacement direction of the movable part.

[0018] Furthermore, the cutting tool further comprises an elastic member, the elastic member comprises a return spring mounted on the movable member, and one end of the return spring abuts against a side of the slider facing the lower die side end. .

[0019] Furthermore, the adjusting member includes a clamping seat and a resistance block, the clamping seats are arranged at intervals along the displacement direction of the movable member, the resistance block is movably mounted on the clamping seat, one end of which is kept parallel to one end of the contact part, and the resistance block on each adjusting member can intermittently contact the contact part.

[0020] Beneficial Effects

[0021] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0022] The present invention arranges a trimming device between an upper die and a lower die in a forging die, and utilizes a cutting piece arranged at the lower end of a cutting tool to cut overflowing materials after deformation of a forging piece subjected to pressure. By arranging an adjusting piece, in addition to being able to adjust the position of the cutting piece according to the shape of the required forging die, the cutting piece can also be used to cut overflowing materials in a saw-like cutting manner during cutting, thereby ensuring the cutting quality. At the same time, the contact area between the cutting piece and the workpiece is always small, and deformation of the forging piece caused by cutting will not be caused. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 It is a schematic diagram of the process flow of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall structure in the present invention;

[0026] Figure 3 It is a schematic diagram of the exploded view of the lower die structure of the present invention;

[0027] Figure 4 It is a top view schematic diagram of the lower die structure of the present invention;

[0028] Figure 5 It is a schematic diagram of the exploded view of the adjusting member structure of the present invention;

[0029] Figure 6 It is a side view schematic diagram of the lower die structure of the present invention;

[0030] Figure 7 It is of the present invention Figure 6 Schematic diagram of the structure at position A;

[0031] Figure 8 It is a schematic diagram of the exploded view of the cutting tool structure of the present invention.

[0032] The reference numerals in the figure respectively represent: 1. upper die; 11. driving rail platform; 2. lower die; 21. chamber; 22. seat body; 23. positioning plate; 3. trimming device; 31. movable member; 311. return spring; 312. slide rail; 32. cutting tool; 321. slider; 322. contact part; 323. cutting piece; 33. adjusting member; 331. clamping seat; 332. abutting block; 333. screw; 334. fastening screw. Detailed Embodiments

[0033] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0034] The following further describes the present invention in combination with embodiments.

[0035] Embodiment: A forging process for an automotive control arm, comprising the following steps:

[0036] Step 1: After heating the blank, place it into the forging die.

[0037] Step 2: Extrude the blank within the forging die to cause plastic deformation of the blank.

[0038] Step 3: Cut off the scrap material that overflows from the edge of the inner cavity of the forging die.

[0039] A forging die for an automotive control arm, comprising an upper die 1 and a lower die 2 that can be closed. The lower die 2 is installed on the workbench. After calcining the blank, place the blank on the lower die, and use the upper die 1 to physically extrude the blank until the blank undergoes plastic deformation. The lower die 2 includes a seat body 22 and a positioning plate 23 detachably installed on the seat body 22. A cavity 21 having the same shape and size as the blank to be processed is provided in the middle of the positioning plate 23, and the blank is placed within the cavity 21.

[0040] In this example, the positioning plate 23 and the seat body 22 are fixed by a snap-fit method. A rectangular card slot is provided on the seat body 22 for clamping the positioning plate 23, and the positioning plate 23 with different-shaped cavities 21 can be conveniently replaced to adapt to blanks of different types and shapes.

[0041] After the upper die 1 presses downward towards the lower die 2, the blank will undergo a certain deformation due to physical extrusion. Due to the local limitation of the cavity 21, the excess structure of the blank will overflow towards the edge of the cavity 21.

[0042] A trimming device 3 is provided between the upper die 1 and the lower die 2, which is used to cut the edge of the blank located within the cavity 21 and remove the overflowing structure.

[0043] A driving track platform 11 is installed on one side of the lower die 2. The trimming device 3 includes a movable member 31, a cutting tool 32, and an adjusting member 33. Two lead screw rails are horizontally arranged on the driving track platform 11, and the movable member 31 is sleeved on the lead screw rails and reciprocates in a guided manner on the rails.

[0044] The cutting tool 32 is movably mounted on the movable member 31. The cutting tool 32 includes a slider 321 that can be guided and move on the movable member 31, a contact portion 322 movably provided on the slider 321, and a cutting member 323 mounted on the slider 321. One end of the movable member 31 facing the chamber 21 extends perpendicularly in the direction of the chamber 21. Two slide rails 312 are provided at the lower end of its extension portion. The slider 321 is sleeved on the two slide rails 312 and slides. On both sides of the lower end of the slider 321, there are respectively a contact portion 322 and a cutting member 323. Among them, the cutting member 323 is provided on the side close to the chamber 21, and the contact portions 322 are symmetrically distributed on one side of the cutting member 323.

[0045] A return spring 311 is sleeved on each slide rail 312. One end of each return spring 311 abuts against one side of the slider 321 facing the lower die 2 side end. When the slider 321 is acted upon by an external force, it will slide on the slide rail 312, thereby driving the cutting member 323 at the lower end to move. Since the chamber 21 is customized according to the actual style of the workpiece, the arcs are different. The cutting member 323 only needs to contact the edge of the chamber 21. Therefore, it is necessary to control the position of the cutting member 323 at the bottom of the slider 321 on the slider 321.

[0046] The contact portion 322 is integrally block-shaped and is parallel to the side end of the lower die 2. The cutting member 323 includes two slices that are symmetrically distributed and are respectively inclined to the upper end surface of the lower die 2, and the cutting edge direction thereof is consistent with the displacement direction of the movable member 31.

[0047] After the mold is closed, by moving the movable member 31, the cutting edge of the cutting member 323 provided at the lower end of the movable member 31 will move along the edge of the chamber 21 to cut off the overflowing structure.

[0048] The adjusting member 33 is mounted on the side of the contact portion 322 away from the chamber 21, and the adjusting member 33 is parallel to the abutting portion. The adjusting member 33 includes a clamping seat 331 mounted on one side of the lower die 2. A number of clamping seats 331 are arranged at intervals along the displacement direction of the movable member 31. A abutting block 332 is movably mounted on each clamping seat 331. One end of the abutting block 332 is perpendicularly distributed to the plane where the contact portion 322 is located, and the contact portion 322 can intermittently contact one end of each abutting block 332.

[0049] The contact portion 322 is integrally block-shaped, and the end facing the adjusting member 33 is arc-shaped. The ends of the abutting blocks 332 facing the contact portion 322 are all set as arc-shaped. The distance between the centers of the arcs of two adjacent abutting blocks 332 is the same as the diameter of the contact portion 322.

[0050] In this example, the abutting block 332 can be positionally adjusted on each adjusting member 33. The abutting block 332 is guided to slide on the adjusting member 33, and one end thereof is connected to a screw rod 333 which extends in a direction away from the lower die 2. A fastening screw 334 is screwed onto the outside thereof. When adjusting the position of the abutting block 332, by determining the extension nodes at the edge of the chamber 21 on the positioning plate 23, it is ensured that under the contact of the abutting block 332, the slider 321 can move towards the edge direction of the chamber 21 until the cutting edge surface of the cutting member 323 can be attached to the edge of the chamber 21 for cutting.

[0051] In this example, a checkerboard pattern is provided on the end of the positioning plate 23, and the approximate position of the chamber 21 can be quickly determined and located through the checkerboard pattern. The movement path required for the abutting block 332 can be controlled by establishing inflection points on the checkerboard pattern.

[0052] Before the actual edge trimming work starts, by rotating the fastening screw 334, the alignment connection of the abutting blocks 332 is made to be consistent with the extension direction of the edge of the chamber 21. After positioning, the slider 321 starts to move, and the cutting member 323 at the bottom also gradually reaches the edge cutting area of the chamber 21. In order to reduce the contact area between the cutting tool 32 and the end face of the workpiece, it is necessary to keep the cutting tool 32 always attached to the edge of the chamber 21 for cutting, so as not to drive the end face of the workpiece, which is still in a high-temperature and high-plasticity state, to flow.

[0053] When the contact portion 322 installed at the lower end of the slider 321 starts to contact the closest abutting block 332, it will gradually move towards one end of the chamber 21. When the curvature of the outer edge of the side end of the chamber 21 changes, the distance between the corresponding abutting block 332 and the contact portion 322 also changes. When the contact portion 322 is about to separate from one of the abutting blocks 332, one end of the contact portion 322 contacts the side surface of the arc surface of the abutting block 332, resulting in a short retraction stroke of the contact portion 322, and then it will start to contact the vertex portion of another abutting block 332 again, keeping the entire cutting member 323 moving in a wavy line shape, making the cutting produce a sawing effect, improving the cutting efficiency and not causing a unidirectional tensile force on the workpiece for a long time, making the cutting effect better and having little impact on the flatness of the end face of the workpiece.

[0054] On the slide bar, it at least includes a cutting surface that can keep the same displacement direction as the moving member 31. This cutting surface is always perpendicularly attached to the outer edge of the chamber 21, and the workpiece corner material overflowing from the edge of the chamber 21 is cut off as the moving member 31 moves. A number of adjusting members 33 are provided, and the end thereof facing the cutting tool 32 abuts against the side surface of the cutting tool 32. The distance between it and the chamber 21 is adjustable. By changing the distance between the adjusting member 33 and the chamber 21, the distance between the contact portion between the adjusting member 33 and the cutting tool 32 and the outer edge direction of the chamber 21 is controlled.

[0055] Furthermore, marks that can identify its length and width are distributed on the end face of the positioning plate 23. In this example, the positioning marks are made in a checkerboard manner, which is convenient for quickly finding the positioning node of the chamber 21 and adjusting the distance between the interference block 332 and the chamber 21, so that when the cutter 32 contacts the adjustment member 33, the cutting member 323 can always move in the direction of the edge of the chamber 21, and the contact surface area between the blank is always maintained at a level that does not cause excessive deformation of the end face of the blank due to friction generated by the movement.

[0056] Furthermore, the cutter 32 includes a slider 321, a contact portion 322 and a cutting piece 323. The slider 321 can be guided and slid toward the side end of the chamber 21. The contact portion 322 is installed on the slider 321 and always remains parallel to the side end of the chamber 21. The cutting piece 323 includes at least one slice that is obliquely distributed with respect to the lower mold 2, and the blade surface of the cutting piece 323 faces the displacement direction of the movable part 31.

[0057] Furthermore, the cutting tool 32 also includes an elastic member, which includes a return spring 311 installed on the movable member 31, and one end of the return spring 311 abuts against the side of the slider 321 facing the side end of the lower mold 2. In this example, the spring plays a role of reset and when squeezed, the elastic force of the cutting member 323 is increased by the compressed return spring 311. At the same time, the movable member 31 can be retracted to allow the slice to be cut in a "sawing" manner, thereby increasing the cutting efficiency.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A forging die for automobile control arm, It is characterized in that include: upper mold; A lower die, wherein the lower die is provided with a cavity for accommodating the blank; A trimming device, which is disposed between the upper die and the lower die and is used to cut the edge of the blank in the cavity; The trimming device comprises: A movable member, the movable member being movable in a parallel direction along one side of the chamber; A cutter, which is movably mounted on the movable part and includes at least one cutting surface that can maintain the same displacement direction as the movable part, the cutting surface is always vertically attached to the outer edge of the chamber, and cuts off the blank corner material overflowing from the edge of the chamber as the movable part moves; The adjusting member is provided with a plurality of adjusting members and one end of the adjusting member facing the cutter abuts against the side of the cutter, and the distance between the adjusting member and the chamber is adjustable. By changing the distance between the adjusting member and the chamber, the distance between the contact point between the adjusting member and the cutter and the outer edge of the chamber is controlled; The cutting tool comprises: A slider, the slider can be guided and slid toward the side end of the chamber; A contact portion, which is mounted on the slider and is always kept parallel to the side end of the chamber; A cutting piece, wherein the cutting piece comprises at least one cutting piece which is obliquely distributed with respect to the lower die, and the blade surface of the cutting piece faces the displacement direction of the movable piece; The cutting tool also includes: The elastic member comprises a return spring installed on the movable member, and one end of the return spring abuts against a side of the slider facing the lower die side end.

2. A forging die for an automobile control arm according to claim 1, It is characterized in that The lower mold includes: A seat body, the seat body being arranged at a symmetrical end of the upper mold; A positioning plate is detachably mounted on a side of the base body facing the upper mold, and the cavity is arranged on the positioning plate.

3. A forging die for an automobile control arm according to claim 2, It is characterized in that Marks for identifying the length and width of the positioning plate are distributed on the end surface of the positioning plate.

4. A forging die for an automobile control arm according to claim 3, It is characterized in that The adjusting member comprises: Clamp seats, the clamp seats are arranged at intervals along the displacement direction of the movable member; The resistance block is movably mounted on the clamping seat, one end of which is kept parallel to one end of the resistance part, and the resistance block on each adjusting member can intermittently contact the contact part.

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