Steering shaft cross tube forming device

Abstract

The utility model discloses a kind of steering shaft cross pipe forming devices, including base, lower mould, upper mould, die holder and die rod, the base top is provided with lower mould, lower mould four included angle place is provided with guide pillar guide bushing component, and lower mould top is sequentially provided with die holder and upper mould, the lower mould and upper mould shape are same, and about die holder symmetrically set;The one side of lower mould and upper mould close to die holder is provided with the concave V-shaped groove, the top surface and the bottom surface of die holder both sides are provided with inclined surface groove, its inclined surface and the V-shaped groove inclined surface of lower mould and upper mould one to one correspondence.The utility model sets 45 ° inclination by being arranged as the mould core of cross pipe forming, and corresponding upper mould, lower mould and die holder are also provided 45 ° inclined surface, when extruding, only need to force in up-down direction, avoid subsequent problem caused by existing up-down and left-right direction force out of synchronization.

Description

Technical Field

[0001] This utility model relates to the field of extrusion molding technology, and in particular to a steering shaft cross tube forming device. Background Technology

[0002] The steering column is the core component of a car's steering system. It transmits the torque generated by the driver turning the steering wheel to the steering gear, thereby controlling the vehicle's steering. The core component of the steering column, the steering shaft, is made of tubular material, one end of which is extruded into a cross shape. Current forming processes typically use equipment to extrude the tubular material simultaneously in the up, down, left, and right directions to form the cross shape. However, this process suffers from a lack of synchronization between the up / down and left / right directions, resulting in poor dimensional consistency after the tubular material is formed, which affects subsequent assembly. Utility Model Content

[0003] To address the issue that existing forming processes typically involve simultaneously extruding the tube in both vertical and horizontal directions to form a cross shape, the present invention provides a steering shaft cross tube forming device.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A steering shaft cross tube forming device includes a base, a lower mold, an upper mold, a mold base, and a mold rod. The lower mold is positioned on the top of the base, and guide post and guide sleeve assemblies are provided at each of the four included corners of the lower mold. The mold base and upper mold are sequentially positioned above the lower mold. The lower and upper molds are identical in shape and symmetrically arranged about the mold base. Each of the lower and upper molds has a concave V-shaped groove on its side near the mold base. The top and bottom surfaces of the mold base have inclined grooves on both sides, with the inclined surfaces corresponding one-to-one with the inclined surfaces of the V-shaped grooves in the lower and upper molds. The planes of the lower and upper molds near the mold base... Each part is provided with a second countersunk hole, and the mold base is also provided with a corresponding second countersunk hole, for setting elastic elements between the lower mold and the mold base, and between the upper mold and the mold base; the inclined surface of the inclined groove is inclined at 45°, and a mold cavity is provided on the inclined surface that extends through to the middle forming hole of the mold base. A mold core is movably inserted into the mold cavity, and a pressure plate is provided at the end of the mold core away from the forming hole. The upper and lower surface inclination angles of the pressure plate are consistent with the inclination angles of the inclined surfaces on the lower mold, the upper mold, and the mold base. A first countersunk hole is also provided on the inclined surface of the mold base, for setting elastic elements between the pressure plate and the mold base; The mold rod consists of a connecting rod and a forming rod. The shape of the forming rod is consistent with the required shape of the workpiece to be processed. A guide plate is provided at the front end of the mold base. The guide plate has guide holes corresponding to the forming holes for guiding the workpiece to be processed and the mold rod. A horizontal plate is provided at the rear end of the mold base. A support plate is provided on the horizontal plate. A limit rod is provided on the support plate for limiting the workpiece to be processed.

[0005] Preferably, the diameter of the connecting rod is larger than the outer diameter of the workpiece to be processed, and it is used to abut the end of the workpiece to be processed. Its shape is cross-shaped, and the guide hole on the corresponding guide plate is also cross-shaped, so as to prevent the connecting rod from rotating during the processing.

[0006] Preferably, the diameters of the forming rod and the limiting rod are consistent with the inner diameter of the workpiece to be processed, so that the forming rod and the limiting rod can be inserted into the workpiece to be processed and fit against its inner wall.

[0007] Preferably, the horizontal plate is provided with a track for adjusting the position of the support plate and the limiting rod to accommodate workpieces of different lengths.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting the core of the cross tube forming mold to a 45° inclination, and setting the corresponding upper mold, lower mold and mold base to a 45° inclination, only the up and down direction needs to be applied during extrusion molding, thus avoiding the subsequent problems caused by the asynchronous application of force in the up, down and left and right directions in the existing process. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model; Figure 2 This is a side view of an embodiment of the present utility model. Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of AA; Figure 4 This is a schematic diagram of the state of the workpiece to be extruded in an embodiment of the present invention; Figure 5 for Figure 4 A schematic diagram of the side view structure; Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure of BB; Figure 7 for Figure 4 A top-view structural diagram; Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure of the C-C section; Figure 9 This is a three-dimensional structural diagram of the mold base according to an embodiment of the present utility model; Figure 10 for Figure 9 A top-view structural diagram; Figure 11 for Figure 10 Schematic diagram of the cross-sectional structure of DD; Figure 12 This is a three-dimensional structural diagram of the upper mold in an embodiment of the present invention.

[0010] In the diagram: 1. Base, 2. Lower mold, 3. Upper mold, 4. Mold base, 401. Forming hole, 402. Mold cavity, 403. First countersunk hole, 404. Inclined groove, 5. Guide plate, 6. Mold rod, 601. Connecting rod, 602. Forming rod, 7. Horizontal plate, 8. Support plate, 9. Limiting rod, 10. Workpiece to be processed, 11. Pressure plate, 12. Mold core, 13. Second countersunk hole, 14. V-groove. Detailed Implementation

[0011] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0013] like Figures 1 to 12 As shown, this embodiment of the utility model includes a base 1, a lower mold 2, an upper mold 3, a mold base 4, and a mold rod 6. The lower mold 2 is provided on the top of the base 1. Guide post and guide sleeve assemblies are provided at the four corners of the lower mold 2. The mold base 4 and the upper mold 3 are arranged sequentially above the lower mold 2. The lower mold 2 and the upper mold 3 have the same shape and are symmetrically arranged about the mold base 4. The side of the lower mold 2 and the upper mold 3 near the mold base 4 is provided with a concave V-shaped groove 14. The top and bottom surfaces of the mold base 4 are provided with inclined grooves 404, the inclined surfaces of which correspond one-to-one with the inclined surfaces of the V-shaped grooves 14 of the lower mold 2 and the upper mold 3. The plane of the lower mold 2 and the upper mold 3 near the mold base 4 is provided with a second countersunk hole. 13, and the mold base 4 is also provided with a corresponding second countersunk hole 13, which is used to set an elastic element between the lower mold 2 and the mold base 4, and the upper mold 3 and the mold base 4; the inclined surface of the inclined groove 404 is inclined at 45°, and a mold cavity 402 is provided on the inclined surface, which extends through to the middle forming hole 401 of the mold base 4. A mold core 12 is movably inserted in the mold cavity 402. A pressure plate 11 is provided at one end of the mold core 12 away from the forming hole 401. The upper and lower surface inclination angles of the pressure plate 11 are consistent with the inclination angles of the inclined surfaces on the lower mold 2, the upper mold 3 and the mold base 4. A first countersunk hole 403 is also provided on the inclined surface of the mold base 4, which is used to set an elastic element between the pressure plate 11 and the mold base 4; The mold rod 6 consists of a connecting rod 601 and a forming rod 602. The shape of the forming rod 602 is consistent with the required shape of the workpiece 10 to be processed. A guide plate 5 is provided at the front end of the mold base 4. The guide plate 5 has a guide hole corresponding to the forming hole 401, which is used to guide the workpiece 10 to be processed and the mold rod 6. A horizontal plate 7 is provided at the rear end of the mold base 4. A support plate 8 is provided on the horizontal plate 7. A limit rod 9 is provided on the support plate 8, which is used to limit the workpiece 10 to be processed.

[0014] When cross-forming is required for the workpiece 10, first, the workpiece 10 is placed on the forming rod 602. Then, the workpiece 10 and the forming rod 102 are inserted into the forming hole 401 through the guide plate, and the rear end of the workpiece 10 is placed on the limiting rod 9. Next, the external hydraulic equipment is activated to drive the upper mold 3 and the lower mold 2 to move. When the inclined surface of the V-groove 14 on the upper mold 3 and the lower mold 2 contacts the upper inclined surface of the pressure plate 11, the pressure plate 11 is squeezed, which in turn drives the mold core 12 to squeeze the workpiece 10. With the help of the forming rod 602, the workpiece 10 is squeezed and formed. After forming, the hydraulic equipment is reset, and the upper mold 3, the lower mold 2 and the pressure plate 11 are reset under the action of the elastic element. Then, the formed workpiece 10 is removed from the forming hole 401, and the workpiece 10 is separated from the mold rod 6 by another device. The above actions can be repeated to perform cross-forming on the workpiece 10 in batches.

[0015] Preferably, the diameter of the connecting rod 601 is larger than the outer diameter of the workpiece 10 to be processed, and it is used to abut the end of the workpiece 10. Its shape is cross-shaped, and the guide hole on the corresponding guide plate 5 is also cross-shaped to prevent the connecting rod 601 from rotating during processing.

[0016] Preferably, the diameters of the forming rod 602 and the limiting rod 9 are the same as the inner diameter of the workpiece 10 to be processed, so that the forming rod 602 and the limiting rod 9 can be inserted into the workpiece 10 to be processed and fit against its inner wall.

[0017] Preferably, the horizontal plate 7 is provided with a track for adjusting the position of the support plate 8 and the limiting rod 9 to accommodate workpieces 10 of different lengths.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steering shaft cross tube forming device, characterized in that: The system includes a base, a lower mold, an upper mold, a mold base, and mold rods. The lower mold is mounted on top of the base, and guide post and guide sleeve assemblies are provided at each of the four included corners of the lower mold. The mold base and upper mold are sequentially mounted above the lower mold. The lower mold and upper mold are identical in shape and symmetrically arranged about the mold base. Both the lower mold and upper mold have concave V-shaped grooves on their sides near the mold base. The top and bottom surfaces of the mold base have inclined grooves on both sides, with the inclined surfaces corresponding one-to-one with the inclined surfaces of the V-shaped grooves in the lower and upper molds. A second sinker is provided on the plane of both the lower mold and upper mold near the mold base. The mold base also has a corresponding second countersunk hole for setting elastic elements between the lower mold and the mold base, and between the upper mold and the mold base; the inclined surface of the inclined groove is inclined at 45°, and a mold cavity is provided on the inclined surface that extends through to the middle forming hole of the mold base. A mold core is movably inserted into the mold cavity, and a pressure plate is provided at the end of the mold core away from the forming hole. The upper and lower surface inclination angles of the pressure plate are consistent with the inclination angles of the inclined surfaces on the lower mold, the upper mold, and the mold base. A first countersunk hole is also provided on the inclined surface of the mold base for setting elastic elements between the pressure plate and the mold base; The mold rod consists of a connecting rod and a forming rod. The shape of the forming rod is consistent with the required shape of the workpiece to be processed. A guide plate is provided at the front end of the mold base. The guide plate has guide holes corresponding to the forming holes for guiding the workpiece to be processed and the mold rod. A horizontal plate is provided at the rear end of the mold base. A support plate is provided on the horizontal plate. A limit rod is provided on the support plate for limiting the workpiece to be processed.

2. The steering shaft cross tube forming device according to claim 1, characterized in that: The diameter of the connecting rod is larger than the outer diameter of the workpiece to be processed, and it is used to hold the end of the workpiece to be processed. Its shape is cross-shaped, and the guide hole on the corresponding guide plate is also cross-shaped, so as to prevent the connecting rod from rotating during the processing.

3. The steering shaft cross tube forming device according to claim 1, characterized in that: The diameters of the forming rod and the limiting rod are consistent with the inner diameter of the workpiece to be processed, so that the forming rod and the limiting rod can be inserted into the workpiece to be processed and fit against its inner wall.

4. The steering shaft cross tube forming device according to claim 1, characterized in that: The horizontal plate is equipped with a track for adjusting the position of the support plate and the limiting rod to accommodate workpieces of different lengths.

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