Unidirectional and bidirectional extrusion precision forming equipment for universal joint fork

Abstract

The utility model belongs to the technical field of extrusion forming, and particularly relates to universal joint fork one-way and two-way extrusion precision forming equipment which comprises an equipment bottom box, a machining table is installed on the equipment bottom box, a lower die base is arranged on the machining table, a pressure-bearing back plate is integrally formed at the rear end of the lower die base, and adjustable limiting mechanisms are arranged on the two sides of the lower die base in a sliding mode. A first extrusion forming die is slidably arranged at the front end of the lower die base, a first hydraulic cylinder is installed at the rear end of the machining table through a rack, and an upper die base matched with the lower die base is installed at the telescopic end of the bottom of the first hydraulic cylinder. According to the utility model, the motor drives the coaxial bidirectional screw rod to drive the limiting plate to clamp and fix a blank on the lower die holder; the first hydraulic cylinder drives the upper die base to move downwards, the extrusion plates on the two sides of the upper die base make contact with the extrusion pressing blocks, the second extrusion forming die conducts effective limiting extrusion on the blank, and the blank extrusion forming precision is guaranteed. And the extrusion forming die, the upper die and the lower die holder are matched for stable die assembly, so that the extrusion forming quality of the universal joint fork is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to extrusion forming technical field, concretely relates to a universal joint fork single -double -direction extrusion precision forming equipment. BACKGROUND

[0002] At present, the commonly used spherical shaft three-prong universal joint and cylindrical shaft three-prong universal joint mostly adopt hot die forging forming process, and the hot forging machining precision is low, and flash or burrs exist on the die line of the forging, the surface is rough due to oxidation, and the metal flow distribution is uneven or turbulence, backflow and other phenomena appear in the forming process, so that the production manufacturing cost is high. With the development of mechanical industry and the increasingly fierce international competition, higher requirements are put forward for the improvement of mechanical properties of universal joint products and the reduction of manufacturing cost, especially for the higher requirements for processing quality.

[0003] The existing extrusion forming equipment lacks fixing and limiting of the blank during the extrusion processing of the three-prong universal joint fork, which leads to low processing precision of the blank, increases the subsequent processing difficulty, reduces the processing efficiency, and affects the precision and quality of the three-prong universal joint fork product. Therefore, we propose a universal joint fork single -double -direction extrusion precision forming equipment to solve these problems. SUMMARY

[0004] To solve the problems in the background art, the utility model provides a universal joint fork single -double -direction extrusion precision forming equipment, the motor drives the coaxial double -screw rod to drive the limiting plate to clamp and fix the blank on the lower die seat;The first hydraulic cylinder drives the upper die seat to move downward, and the extrusion plates on the two sides of the upper die seat contact the extrusion block, so that the second extrusion forming die effectively limits and extrudes the blank, ensuring the precision of the blank extrusion forming;It can reduce the deviation of the blank position and affect the extrusion forming quality of the blank. The first extrusion forming die, the second extrusion forming die and the upper die and the lower die seat cooperate with each other to stabilize the die, ensuring the quality of the universal joint fork extrusion forming.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a universal joint fork single -double -direction extrusion precision forming equipment, including equipment bottom box, being equipped with installation processing table on equipment bottom box, being equipped with lower die seat on processing table, the pressure back plate is integrally formed on the rear end of the lower die seat, the adjustable limiting mechanism is slidably arranged on the two sides of the lower die seat, the first extrusion forming die is slidably arranged on the front end of the lower die seat, the first hydraulic cylinder is installed on the rear end of the processing table through the rack, and the upper die seat matched with the lower die seat is installed on the bottom telescopic end of the first hydraulic cylinder.

[0006] As a preferred scheme, the limiting mechanism comprises a coaxial bidirectional screw rod, a limiting plate and a second extrusion forming die, the second extrusion forming die is arranged on the limiting plate through the limiting plate and a limiting guide rod, a pressing block is arranged on the outer end of the limiting guide rod, the coaxial bidirectional screw rod is arranged in a mounting groove of the machining table, the coaxial bidirectional screw rod is driven by a motor, and a reverse L-shaped limiting support rod connected with the back of the limiting plate is arranged on the coaxial bidirectional screw rod.

[0007] As a preferred scheme, the top of the upper die seat is connected with limiting rods on both sides of a first hydraulic cylinder, the top ends of the limiting rods extend to above the top of the rack, the bottom of the upper die seat is provided with an upper die, and extrusion plates matched with the pressing blocks are arranged on both sides of the upper die seat, and inclined extrusion surfaces are arranged on the inner side surfaces of the bottom ends of the extrusion plates and the outer side surfaces of the pressing blocks.

[0008] As a preferred scheme, the outer end of the machining table is provided with a second hydraulic lever connected with the first extrusion forming die through a mounting seat.

[0009] As a preferred scheme, a through groove is arranged above the reverse L-shaped limiting support rod on the extrusion plate.

[0010] As a preferred scheme, the limiting plate is driven by the motor to slide horizontally on the lower die seat through the coaxial bidirectional screw rod and the reverse L-shaped limiting support rod.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] The utility model discloses a motor drives coaxial bidirectional screw rod to drive the limiting plate to move horizontally on the lower die seat through the reverse L-shaped limiting support rod, clamps and fixes the embryo material to be extruded on the lower die seat, the first hydraulic cylinder drives the upper die seat to move downwards, the extrusion plates on both sides of the upper die seat contact the pressing blocks, the second extrusion forming die effectively limits and extrudes the embryo material, guarantees the precision of the embryo material extrusion forming, and can reduce the situation that the embryo material position deviates and influences the embryo material extrusion forming quality.

[0013] The first extrusion forming die is driven to slide on the machining table towards the second extrusion forming die through the second hydraulic lever, the first extrusion forming die, the second extrusion forming die and the upper die and the lower die seat are stably combined, and the quality of the universal joint yoke extrusion forming is ensured. ACCURATE DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the whole structure schematic diagram of the utility model;

[0015] Figure 2 It is the structure schematic diagram of the utility model that the machining table is connected with the limiting mechanism;

[0016] Figure 3 It is Figure 2the front view structural schematic diagram in the figure;

[0017] Figure 4 is Figure 2 the top view structural schematic diagram in the figure;

[0018] Figure 5 is the structural schematic diagram of the upper die holder and the rack connection in the utility model;

[0019] Figure 6 is Figure 5 the front view structural schematic diagram.

[0020] BRIEF DESCRIPTION OF DRAWINGS

[0021] 1, equipment bottom box; 2, processing table; 3, lower die holder; 4, second hydraulic cylinder; 5, mounting seat; 6, first extrusion forming die;

[0022] 7, limiting mechanism; 71, motor; 72, inverted L-shaped limiting support rod; 73, limiting plate; 74, second extrusion forming die; 75, coaxial bidirectional screw; 76, pressing block; 77, limiting guide rod;

[0023] 8, upper die holder; 81, upper die; 82, extrusion plate; 83, through slot;

[0024] 9, rack; 10, first hydraulic cylinder; 11, limiting rod; 21, mounting groove. DETAILED DESCRIPTION

[0025] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as the limitation of the utility model.

[0026] Please refer to Figure 1The utility model provides the following technical scheme: a universal joint fork one -way extrusion precision forming equipment, including equipment bottom box 1, be equipped with installing processing platform 2 on equipment bottom box 1, be equipped with lower mould seat 3 on processing platform 2, the integral moulding has the pressure back plate on lower mould seat 3 rear end, the adjustable stop gear 7 is slid and equipped with on the both sides of lower mould seat 3, the first extrusion forming die 6 is slid and equipped with on the front end of lower mould seat 3, the first hydraulic cylinder 10 is installed on the rear end of processing platform 2 through the frame 9, the upper mould seat 8 that is compatible with lower mould seat 3 is installed on the bottom telescopic end of first hydraulic cylinder 10;Second hydraulic lever 4 that drives the first extrusion forming die 6 of mounting seat 5 with first extrusion forming die 6 is installed on the outer end of processing platform 2;In the embodiment, second hydraulic lever 4 drives first extrusion forming die 6 and slides on processing platform 2 towards second extrusion forming die 74, and the first extrusion forming die 6, second extrusion forming die 74 and upper mould 81 and lower mould seat 3 stable die, ensure the quality of universal joint fork extrusion forming.

[0027] As Figures 2-4 Shown, in the embodiment, the stop gear 7 includes coaxial two -way screw rod 75, limit plate 73 and second extrusion forming die 74, and the second extrusion forming die 74 back is slid and equipped on limit plate 73 through the limit guide rod 77 on the guide hole of limit plate 73, and the pressure block 76 is installed on the outer end of limit guide rod 77;Coaxial two -way screw rod 75 is installed in the mounting groove 21 of processing platform 2, and one end of coaxial two -way screw rod 75 is driven and is connected with motor 71 and is worn out processing platform 2, and the L-shaped limit support rod 72 that is connected with the back of limit plate 73 is connected with coaxial two -way screw rod 75 through screw rod sliding block, and the limit plate 73 is driven coaxial two -way screw rod 75 through L-shaped limit support rod 72 and is driven horizontal sliding on lower mould seat 3 by motor 71;Motor 71 drives coaxial two -way screw rod 75 and drives limit plate 73 to move horizontally on lower mould seat 3 through L-shaped limit support rod 72, and the embryo material to be extruded is clamped and fixed on the lower mould seat.

[0028] As Figures 5-6As shown, in the embodiment, the top of the upper die holder 8 is connected with a limiting rod 11 on both sides of the first hydraulic cylinder 10, the top end of the limiting rod 11 penetrates through the rack 9 and extends above the top of the rack 9, the bottom of the upper die holder 8 is installed with an upper die 81, and the two sides of the upper die holder 8 are connected with an extrusion plate 82 matched with the pressing block 76, and the bottom end of the extrusion plate 82 is provided with an inclined extrusion surface on the inner side face.

[0029] In addition, the equipment bottom box 1 is provided with an electric control box electrically connected with the second hydraulic lever 4, the first hydraulic cylinder 10 and the motor 71, and the equipment bottom box 1 is provided with a switch for controlling the above-mentioned electrical equipment.

[0030] The working principle and use process of the utility model are as follows: when the utility model is used, the staff starts the motor 71 to drive the coaxial bidirectional screw rod 75 to drive the limiting plate 73 to move horizontally on the lower die holder 3 in opposite directions, and clamps and fixes the embryo material to be extruded on the lower die holder; the first hydraulic cylinder 10 is started to drive the upper die holder 8 to move downwardly towards the lower die holder 3, when the upper die holder 8 moves downwardly to approach the lower die holder 3, the extrusion plate 82 on the two sides of the upper die holder 8 contacts and extrudes the pressing block 76, the second extrusion forming die 74 connected through the limiting guide rod 77 moves inwardly, the two second extrusion forming dies 74 limit and extrude the embryo material, the second extrusion forming die 74 always effectively limits and extrudes the embryo material during extrusion, the precision of the extrusion forming of the embryo material is ensured, and the situation that the position of the embryo material deviates and affects the extrusion forming quality of the embryo material is reduced.

[0031] Then the second hydraulic lever 4 is started to drive the first extrusion forming die 6 to slide on the machining table 2 towards the direction of the second extrusion forming die 74, the first extrusion forming die 6, the second extrusion forming die 74 and the upper die 81 and the lower die holder 3 are stably combined, and the quality of the universal joint fork extrusion forming is ensured.

[0032] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A unidirectional and bidirectional extrusion precision forming device for a universal joint fork, comprising a device bottom box (1), a processing table (2) being mounted on the device bottom box (1), and characterized in that: The processing table (2) is provided with a lower die base (3), a pressure-bearing back plate is integrally formed on the rear end of the lower die base (3), adjustable limit mechanisms (7) are slidably provided on both sides of the lower die base (3), a first extrusion forming die (6) is slidably provided on the front end of the lower die base (3), a first hydraulic cylinder (10) is installed on the rear end of the processing table (2) through a frame (9), and an upper die base (8) adapted to the lower die base (3) is installed at the bottom telescopic end of the first hydraulic cylinder (10).

2. The unidirectional and bidirectional extrusion precision forming equipment for universal joint forks according to claim 1, characterized in that: The limiting mechanism (7) comprises a coaxial bidirectional screw (75), a limiting plate (73) and a second extrusion forming die (74). The back of the second extrusion forming die (74) is slidably arranged on the limiting plate (73) through a limiting guide rod (77) through a guide hole on the limiting plate (73). A pressure block (76) is installed on the outer end of the limiting guide rod (77). The coaxial bidirectional screw (75) is installed in the installation groove (21) of the processing table (2). One end of the coaxial bidirectional screw (75) passes through the processing table (2) and is driven by a motor (71). The coaxial bidirectional screw (75) is connected to an inverted L-shaped limiting support rod (72) connected to the back of the limiting plate (73) through a screw slider.

3. The unidirectional and bidirectional extrusion precision forming equipment for universal joint forks according to claim 1, characterized in that: The top of the upper die base (8) is connected to limit rods (11) on both sides of the first hydraulic cylinder (10), and the top of the limit rods (11) passes through the frame (9) and extends to the top of the frame (9). An upper die (81) is installed at the bottom of the upper die base (8), and extrusion plates (82) adapted to the pressure block (76) are connected on both sides of the upper die base (8). Inclined extrusion surfaces are provided on the inner side surface of the bottom end of the extrusion plate (82) and the outer side surface of the pressure block (76).

4. The unidirectional and bidirectional extrusion precision forming equipment for universal joint forks according to claim 1, characterized in that: A second hydraulic lever (4) is mounted on the outer end of the processing table (2) and is drivingly connected to the first extrusion forming die (6) via a mounting seat (5).

5. The unidirectional and bidirectional extrusion precision forming equipment for universal joint forks according to claim 3, characterized in that: A through slot (83) is provided on the extrusion plate (82) just above the inverted L-shaped limiting support rod (72).

6. The unidirectional and bidirectional extrusion precision forming equipment for universal joint forks according to claim 2, characterized in that: The limiting plate (73) drives the coaxial bidirectional screw (75) through the motor (71) and drives the inverted L-shaped limiting support rod (72) to slide horizontally on the lower die base (3).

Images