Integrated forming tool and equipment for inner and outer spline of pipe column

Abstract

The utility model discloses a kind of pipe column inner and outer spline integrated forming tool and equipment, wherein, pipe column inner and outer spline integrated forming tool includes press mould and piece moving mechanism, press mould includes the first die holder and the second die holder that can be mutually close or far away, a pair of outer spline extrusion tooth mould and inner spline extrusion tooth mould and multiple pairs of pipe reducing male die and pipe reducing female die are arranged on the first die holder and the second die holder. First, the diameter of the two ends of pipe column is reduced by multiple pairs of pipe reducing male die and pipe reducing female die in multiple times, so that the shrinkage of each diameter reduction section is controlled within reasonable range, effectively avoid the problem that extrusion fails due to excessive extrusion force causing pipe column to bend, thereby greatly improving the yield rate, reduce production cost, and, the pipe column inner and outer spline integrated forming tool is added by piece moving mechanism, the transfer of feeding process, pipe reducing process, extrusion tooth process and discharging process can be realized, so that the processing of pipe column can be fully automated.

Description

Technical Field

[0001] This utility model relates to the field of spline processing technology, specifically to a tooling and equipment for integrally forming internal and external splines of a tube column. Background Technology

[0002] Electric power steering (EPS) is a steering assist system that relies on an electric motor to directly provide auxiliary torque. The column, with internal and external splines at both ends, is one of the core components of the electric power steering system.

[0003] Currently, the processing and forming of tubular columns first requires shrinking the blank tube at the location where the splines need to be extruded, and then extruding internal and external splines at both ends respectively. However, due to the large cross-sectional shrinkage rate at both ends of the tubular column, the current single-extrusion compression method often causes the tubular column to bend due to excessive extrusion pressure, resulting in extrusion failure, unsatisfactory yield, and high production costs. Utility Model Content

[0004] In view of this, the present invention provides a tooling and equipment for integral molding of internal and external splines of a tube column.

[0005] The technical solution is as follows:

[0006] The first aspect of this application relates to a tooling for integrally forming internal and external splines of a tube column, including a pressing mold and a moving mechanism. The pressing mold includes a first mold base and a second mold base that can move closer to or further away from each other. At least two male tube-shrinking molds and an external spline extrusion mold are fixedly mounted side-by-side at equal intervals on the side of the first mold base closest to the second mold base, arranged sequentially from the loading position to the loading position. A female tube-shrinking mold, corresponding to each of the male tube-shrinking molds, and an internal spline extrusion mold, corresponding to the external spline extrusion mold, are fixedly mounted on the side of the second mold base closest to the first mold base. The moving mechanism includes a tooling for integral forming of internal and external splines from the loading position to the loading position. The system includes an extended gripper cylinder mounting bracket, multiple shifting gripper cylinders fixedly mounted at equal intervals along the length of the gripper cylinder mounting bracket, and a three-dimensional adjustment module for adjusting the spatial position of the gripper cylinder mounting bracket. The number of shifting gripper cylinders is two more than that of the tube shrinking male mold. The distance between the center lines of adjacent shifting gripper cylinders is equal to the distance between the center lines of adjacent tube shrinking male molds. By adjusting the position of each shifting gripper cylinder through the three-dimensional adjustment module, the center lines of the external spline extrusion mold and each tube shrinking male mold can simultaneously pass between the two grippers of the corresponding shifting gripper cylinder.

[0007] By employing the above-mentioned integrated forming fixture for the inner and outer splines of the tubing, the two ends of the tubing are reduced in multiple stages using multiple pairs of male and female shrinking dies. This ensures that the cross-sectional shrinkage rate is controlled within a reasonable range each time, effectively preventing the tubing from bending due to excessive extrusion pressure and causing extrusion failure. Consequently, the yield rate is significantly improved, and production costs are reduced. Furthermore, by adding a transfer mechanism, this integrated forming fixture for the inner and outer splines of the tubing can realize the transfer of the feeding, shrinking, extrusion, and unloading processes, thereby enabling the tubing processing to be fully automated.

[0008] In some embodiments, the three-dimensional adjustment module includes a top plate, an upper slide that is translatably mounted on the top plate via at least one first slide rail, a first drive device for translating the upper slide, a lower slide that is vertically mounted on the upper slide via at least one second slide rail, and a second drive device for vertically mounting the lower slide. The lower slide is translatably mounted on a gripper cylinder mounting bracket along the length direction of the gripper cylinder mounting bracket via at least one third slide rail. The gripper cylinder mounting bracket is equipped with a third drive device for translating the lower slide. The extension direction of the first slide rail is perpendicular to the extension direction of the third slide rail.

[0009] In some embodiments, the gripper cylinder mounting bracket includes two parallel strip-shaped mounting rods extending from the loading position to the loading position. Each shifting gripper cylinder is evenly distributed and fixedly mounted between the two strip-shaped mounting rods. A reinforcing support block is provided between any two adjacent shifting gripper cylinders. Each reinforcing support block is fixedly mounted between the two strip-shaped mounting rods. The third slide rail is fixedly mounted on the side of the two strip-shaped mounting rods that are far apart from each other. The lower slide is fixedly connected to the slider of the corresponding third slide rail through a slide rail connecting block. The third driving device is a cylinder. The cylinder body is fixedly mounted on the lower slide. The piston rod of the cylinder is fixedly connected to any reinforcing support block through a cylinder connecting block.

[0010] In some embodiments, the external spline extrusion die includes an external spline die cylinder and an external spline die core coaxially fixedly installed in the external spline die cylinder. The outer peripheral surface of the external spline die core and the inner peripheral surface of the external spline die cylinder together form an external spline extrusion forming cavity. An external spline extrusion structure is formed on the outer end wall of the external spline die cylinder. An external spline top ring that can move along the axial direction of the external spline die core under the drive of the external spline top ring driving device is fitted on the inner end of the external spline die core.

[0011] The internal spline extrusion mold includes an internal spline mold cylinder and an internal spline mold core coaxially fixed in the internal spline mold cylinder. The outer end of the internal spline mold cylinder has a reduced diameter to form an internal spline shaping section. The inner circumferential surface of the internal spline shaping section and the outer circumferential surface of the internal spline mold core together form an internal spline extrusion forming cavity. An internal spline extrusion structure is formed on the outer circumferential surface of the internal spline mold core. An internal spline top ring is fitted on the inner end of the internal spline mold core and can move along the axial direction of the internal spline mold core under the drive of the internal spline top ring driving device.

[0012] In some embodiments, a precision positioning gripper cylinder is mounted on one end of the outer spline mold cylinder or the inner spline mold cylinder near the gripper cylinder mounting bracket via a cylinder bracket. The two precision positioning grippers of the precision positioning gripper cylinder can be synchronously positioned relative to each other on both sides of the central axis of the outer spline mold core and the inner spline mold core, either close to or far apart.

[0013] The second aspect of this application relates to an integrated forming equipment for internal and external splines of a tube column, including a processing machine and an automatic tube column feeding device and an automatic tube column unloading device respectively disposed on both sides of the processing machine. The processing machine is provided with the aforementioned integrated forming fixture for internal and external splines of the tube column. The automatic tube column feeding device is disposed at the feeding position of the pressure mold, and the automatic tube column unloading device is disposed at the unloading position of the pressure mold. The processing machine is equipped with a first mold base driving device for driving a first mold base closer to or away from a second mold base and a second mold base driving device for driving a second mold base closer to or away from the first mold base. The processing machine is provided with tube column positioning seats at equal intervals, respectively located between the external spline extrusion mold and the internal spline extrusion mold, and between each opposite male and female tube shrinking mold. The three-dimensional adjustment module is mounted on the processing machine.

[0014] The above-mentioned integrated forming equipment for internal and external splines of tubing not only possesses all the advantages of integrated forming tooling for internal and external splines of tubing, but also enables the entire process of processing the blank tube into a tubing column with internal and external splines at both ends to be fully automated, which improves processing efficiency, ensures processing accuracy, and reduces labor costs. Attached Figure Description

[0015] Figure 1 A schematic diagram of the tooling for integral molding of internal and external splines of a tubular column;

[0016] Figure 2 This is a schematic diagram of the compression mold structure;

[0017] Figure 3 This is a schematic diagram of the component transfer mechanism;

[0018] Figure 4 This is a schematic diagram illustrating the principle of forming internal and external splines at both ends of a tube column using an integrated forming tool.

[0019] Figure 5 This is a schematic diagram of the equipment for integrally forming internal and external splines of a tubular column. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0021] like Figure 1 As shown, a tooling for integral forming of inner and outer splines of a tube column mainly includes a pressure mold 1 and a moving mechanism 2.

[0022] Please see Figure 1 and Figure 3 The mold 1 includes a first mold base 11 and a second mold base 12 that can move closer or further apart from each other. Specifically, the first mold base 11 and the second mold base 12 are both parallel plate structures. Furthermore, the first mold base 11 and the second mold base 12 are connected by a plurality of telescopic guide rods 17 to ensure the stability and reliability of the first mold base 11 and the second mold base 12 moving closer or further apart from each other.

[0023] At least two tube shrinking male dies 13 and one external spline extrusion tooth die 14 are fixedly installed side by side at equal intervals on the side of the first mold base 11 near the second mold base 12, arranged sequentially from the loading position to the unloading position. That is, each tube shrinking male die 13 and the external spline extrusion tooth die 14 are arranged sequentially from the loading position to the unloading position, and the external spline extrusion tooth die 14 is closest to the unloading position.

[0024] Correspondingly, a tube-shrinking female mold 15, which is directly opposite to each of the tube-shrinking male molds 13, and an internal spline extrusion mold 16, which is directly opposite to the external spline extrusion mold 14, are fixedly installed on the side of the second mold base 12 near the first mold base 11. The tube-shrinking female molds 15 and the internal spline extrusion molds 16 are arranged sequentially from the loading position to the unloading position, and the internal spline extrusion mold 16 is closest to the unloading position. Most importantly, each tube-shrinking male mold 13 and each tube-shrinking female mold 15 are directly opposite to each other, and the external spline extrusion mold 14 is directly opposite the internal spline extrusion mold 16. Therefore, when the first mold base 11 and the second mold base 12 approach each other, each pair of opposite male shrinking molds 13 and female shrinking molds 15 can shrink the diameter of the tube column between them. After each pair of male shrinking molds 13 and female shrinking molds 15 has completed a set number of diameter reductions on the tube column, the external spline extrusion mold 14 and internal spline extrusion mold 16, which are close to each other, extrude the external spline and internal spline at both ends of the tube column, respectively.

[0025] Meanwhile, the part-shifting mechanism 2 includes a gripper cylinder mounting frame 21 extending from the loading position to the loading position, multiple part-shifting gripper cylinders 22 fixedly mounted on the gripper cylinder mounting frame 21 at equal intervals along the length direction of the gripper cylinder mounting frame 21, and a three-dimensional adjustment module 23 for adjusting the spatial position of the gripper cylinder mounting frame 21. The number of part-shifting gripper cylinders 22 is two more than the number of tube shrinking male molds 13. The distance between the center lines of adjacent part-shifting gripper cylinders 22 is equal to the distance between the center lines of adjacent tube shrinking male molds 13. Thus, by adjusting the position of each part-shifting gripper cylinder 22 through the three-dimensional adjustment module 23, the center lines of the external spline extrusion tooth mold 14 and each tube shrinking male mold 13 can simultaneously pass between the two grippers 22a of the corresponding part-shifting gripper cylinder 22. Therefore, with each reciprocating movement of the transfer mechanism 2 between the loading position and the unloading position, it can simultaneously transfer the tube column (blank tube) at the loading position to between the first pair of male and female tube shrinking molds 13 and 15, transfer the tube column between the first pair of male and female tube shrinking molds 13 and 15 to between the second pair of male and female tube shrinking molds 13 and 15, transfer the tube column between the second pair of male and female tube shrinking molds 13 and 15 to between the third pair of male and female tube shrinking molds 13 and 15, transfer the tube column between the third pair of male and female tube shrinking molds 13 and 15 to between the fourth pair of male and female tube shrinking molds 13 and 15, and transfer the tube column between the fourth pair of male and female tube shrinking molds 13 and 15 to the unloading position.

[0026] In summary, by using multiple pairs of male and female tube shrinking dies 13 and 15 to shrink the diameter of both ends of the tube column in several stages, the cross-sectional shrinkage rate of each shrinkage is controlled within a reasonable range. This effectively avoids the problem of tube column bending due to excessive extrusion pressure, which leads to extrusion failure. Consequently, the yield rate is greatly improved, and the production cost is reduced. Furthermore, the integrated forming tooling for the inner and outer splines of this tube column, by adding a transfer mechanism 2, can realize the transfer of the feeding process, tube shrinking process, tooth extrusion process, and unloading process, thereby enabling the tube column processing to be fully automated.

[0027] Please see Figure 1 and Figure 3The three-dimensional adjustment module 23 includes a top plate 23a, an upper slide 23c that can be translatably mounted on the top plate 23a via at least one first slide rail 23b, a first drive device 23d for translating the upper slide 23c, a lower slide 23f that can be lifted and lowered on the upper slide 23c via at least one second slide rail 23e, and a second drive device 23g for lifting and lowering the lower slide 23f. The lower slide 23f can be translatably mounted on the gripper cylinder mounting bracket 21 along the length direction of the gripper cylinder mounting bracket 21 via at least one third slide rail 23h. The gripper cylinder mounting bracket 21 is equipped with a third drive device 23i for translating the lower slide 23f. The extension direction of the first slide rail 23b is perpendicular to the extension direction of the third slide rail 23h.

[0028] Therefore, the first drive device 23d and the third drive device 23i can control the position of each part-moving gripper cylinder 22 in the X and Y directions, and the second drive device 23g can control the position of each part-moving gripper cylinder 22 in the Z direction, thus ensuring precise control of the position of each part-moving gripper cylinder 22.

[0029] Among them, the second drive device 23g and the third drive device 23i preferably adopt cylinders, because the displacement distance between each process and the distance of lifting away from the tube column positioning seat can be regarded as equal regardless of the type of tube column being processed. Therefore, the second drive device 23g and the third drive device 23i can adopt low-cost, stable and reliable cylinders. The first drive device 23d preferably adopts an electric linear module. Specifically, the electric linear module is composed of a servo motor and a lead screw nut kinematic pair, so it can accurately control the position of each moving part gripper cylinder 22 between the first mold base 11 and the second mold base 12 to adapt to different clamping positions of different tube columns.

[0030] Please see Figure 3 The gripper cylinder mounting bracket 21 includes two parallel strip mounting rods 21a extending from the loading position to the loading position. Each shifting gripper cylinder 22 is evenly distributed and fixedly installed between the two strip mounting rods 21a. A reinforcing support block 21b is provided between any two adjacent shifting gripper cylinders 22. Each reinforcing support block 21b is fixedly installed between the two strip mounting rods 21a. A third slide rail 23h is fixedly installed on the side of the two strip mounting rods 21a that is far apart from each other. The lower slide 23f is fixedly connected to the slider of the corresponding third slide rail 23h through the slide connecting block 23j. The cylinder body of the third drive device 23i is fixedly installed on the lower slide 23f. The piston rod of the third drive device 23i is fixedly connected to any reinforcing support block 21b through the cylinder connecting block 23k, ensuring the stability and reliability of the overall structure.

[0031] The top plate 23a has two side plates and a horizontal plate forming a U-shaped structure. Parallel first slide rails 23b are mounted on the upper surfaces of both side plates. The top of the upper carriage 23c is mounted on the sliders of the two first slide rails 23b, forming a hoisting structure similar to a gantry crane, which is stable and reliable. Correspondingly, the main structure of the third drive device 23i is fixedly mounted on the horizontal plate, and the nut of the lead screw and nut kinematic pair is fixedly mounted on the top of the upper carriage 23c.

[0032] Please see Figure 1 and Figure 3 Both the upper slide 23c and the lower slide 23f are arranged vertically. Therefore, two vertically extending second slide rails 23e are installed parallel to each other on one side surface of the lower slide 23f, and the upper slide 23c is fixedly mounted on the sliders of the two second slide rails 23e. Correspondingly, the cylinder of the second drive device 23g is fixedly mounted on the upper slide 23c, and the piston rod of the second drive device 23g extends downward and is fixedly connected to the lower slide 23f.

[0033] Please see Figure 4 The external spline extrusion mold 14 includes an external spline mold cylinder 14a and an external spline mold core 14b coaxially fixed in the external spline mold cylinder 14a. The outer peripheral surface of the external spline mold core 14b and the inner peripheral surface of the external spline mold cylinder 14a together form an external spline extrusion forming cavity. An external spline extrusion structure is formed on the outer end wall of the external spline mold cylinder 14a. An external spline top ring 14c is fitted on the inner end of the external spline mold core 14b and can move axially along the external spline mold core 14b under the drive of the external spline top ring drive device. This ensures reliable forming of the external spline and allows the tube column to be ejected and demolded through the external spline top ring 14c, which is simple and reliable.

[0034] Similarly, the internal spline extrusion mold 16 includes an internal spline mold cylinder 16a and an internal spline mold core 16b coaxially fixed in the internal spline mold cylinder 16a. The outer end of the internal spline mold cylinder 16a has a reduced diameter to form an internal spline shaping section 16a1. The inner circumferential surface of the internal spline shaping section 16a1 and the outer circumferential surface of the internal spline mold core 16b together form an internal spline extrusion forming cavity. An internal spline extrusion structure is formed on the outer circumferential surface of the internal spline mold core 16b. An internal spline top ring 16c is fitted on the inner end of the internal spline mold core 16b, which can move axially along the internal spline mold core 16b under the drive of the internal spline top ring drive device. This ensures reliable forming of the internal spline and allows the tube column to be ejected and demolded through the internal spline top ring 16c, which is simple and reliable.

[0035] The structure of the female tube shrinking mold 15 is basically the same as that of the external spline extrusion mold 14 and the internal spline extrusion mold 16, both consisting of a mold cylinder, a mold core, and a top ring. The structure of some male tube shrinking molds 13 is basically the same as that of the external spline extrusion mold 14 and the internal spline extrusion mold 16, both consisting of a mold cylinder, a mold core, and a top ring. The structure of another part of the male tube shrinking molds 13 is a standard punch structure, where the tube column cannot be inserted and only serves a supporting function.

[0036] Specifically, this embodiment includes four pairs of male tube-shrinking dies 13 and female tube-shrinking dies 15. The section shrinkage rate for each pass is controlled within a reasonable range of 7-13% to prevent the tube from bending due to excessive extrusion pressure during the extrusion process. The specific process is as follows:

[0037] The transfer mechanism 2 places the tube column (blank tube) between the first pair of tube shrinking male molds 13 and tube shrinking female molds 15. The second mold base 12 and the first mold base 11 approach each other. Since the first tube shrinking male mold 13 is a punch structure, the tube shrinking male mold 13 pushes the tube column (blank tube) into the tube shrinking cavity of the first tube shrinking female mold 15 for diameter reduction. After the diameter reduction is completed, it is ejected by the top ring.

[0038] After ejection, the moving mechanism 2 clamps the tube column and moves it between the second pair of tube shrinking male mold 13 and tube shrinking female mold 15. Since the second tube shrinking male mold 13 is a punch structure, the tube shrinking male mold 13 pushes the tube column into the tube shrinking cavity of the second tube shrinking female mold 15 for tube shrinking. After the tube shrinking is completed, it is ejected by the top ring.

[0039] After ejection, the transfer mechanism 2 clamps the tube column and moves it between the third pair of male and female tube shrinking molds 13 and 15. Since the third male tube shrinking mold 13 has a structure that is basically the same as the external spline extrusion mold 14 and the internal spline extrusion mold 16, the tube shrinking is done at both ends at the same time. However, the cross-sectional shrinkage rate of one end of the third male tube shrinking mold 13 is designed to be smaller than that of one end of the third female tube shrinking mold 15. During the shrinking process, the shrinking of one end of the third male tube shrinking mold 13 is completed first. After completion, the end face of the tube column embedded in the third male tube shrinking mold 13 contacts the top ring of the third male tube shrinking mold 13. After contact, this end will no longer shrink (the shrinking length will no longer increase). The third male tube shrinking mold 13 then pushes the tube column into the shrinking cavity of the second female tube shrinking mold 15 for shrinking. After the shrinking is completed, it is ejected by the top ring.

[0040] After ejection, the transfer mechanism 2 clamps the tube column and moves it between the fourth pair of male tube shrinking molds 13 and female tube shrinking molds 15. Since the fourth male tube shrinking mold 13 has a structure that is basically the same as the external spline extrusion mold 14 and the internal spline extrusion mold 16, this shrinking is done at both ends simultaneously. However, the cross-sectional shrinkage rate of one end of the fourth male tube shrinking mold 13 is designed to be smaller than that of one end of the fourth female tube shrinking mold 15. During the shrinking process, the shrinking of one end of the fourth male tube shrinking mold 13 is completed first. After completion, the end face of the tube column embedded in the fourth male tube shrinking mold 13 contacts the top ring of the fourth male tube shrinking mold 13. After contact, this end will no longer shrink (the shrinking length will no longer increase). The fourth male tube shrinking mold 13 then pushes the tube column into the shrinking cavity of the second female tube shrinking mold 15 for shrinking. After the shrinking is completed, it is ejected by the top ring.

[0041] After ejection, the transfer mechanism 2 clamps the tube column and moves it between the external spline extrusion mold 14 and the internal spline extrusion mold 16. The extrusion of the spline is also carried out simultaneously at both ends. However, the section shrinkage rate of the external spline extrusion mold 14 is designed to be smaller than that of the internal spline extrusion mold 16. Therefore, during the extrusion of the internal and external splines, the extrusion of the external spline is completed first. After completion, the end face of the tube column inserted into the external spline extrusion mold 14 contacts the external spline top ring 14c. After contact, the external spline will no longer be extruded (the length of the external spline will no longer increase). The external spline extrusion mold 14 then pushes the tube column into the internal spline extrusion mold 16 to extrude the internal spline until the internal spline extrusion is completed. This ensures that both the internal and external splines are extruded and formed. After completion, the internal spline top ring 16c ejects the tube column, the transfer mechanism 2 grabs the tube column, and unloads it, completing one cycle.

[0042] Further, please see Figure 2 A precision positioning gripper cylinder 32 is mounted on one end of the outer spline mold cylinder 14a or the inner spline mold cylinder 16a near the gripper cylinder mounting bracket 21 via a cylinder bracket 31. The two precision positioning grippers 321 of the precision positioning gripper cylinder 32 can be synchronously positioned close to or far away from each other on both sides of the central axis of the outer spline mold core 14b and the inner spline mold core 16b. This allows the two precision positioning grippers 321 to further improve the stability and reliability of the extrusion teeth during the extrusion of the inner and outer splines, thus ensuring the processing quality of the inner and outer splines.

[0043] Example 2:

[0044] Please see Figure 5An integrated forming device for internal and external splines of a tube column includes a processing machine (not shown in the figure) and an automatic tube column feeding device 4 and an automatic tube column unloading device 5 respectively arranged on both sides of the processing machine. The processing machine is equipped with the integrated forming tooling for internal and external splines of the tube column according to Embodiment 1. The automatic tube column feeding device 4 is located at the feeding position of the pressure mold 1, and the automatic tube column unloading device 5 is located at the unloading position of the pressure mold 1. The processing machine is equipped with a first mold base driving device (not shown in the figure) for driving the first mold base 11 closer to or away from the second mold base 12 and a second mold base driving device (not shown in the figure) for driving the second mold base 12 closer to or away from the first mold base 11. The processing machine is equally spaced tube column positioning seats (not shown in the figure) located between the external spline extrusion mold 14 and the internal spline extrusion mold 16 and between the opposite male tube shrinking mold 13 and the female tube shrinking mold 15. Each tube shrinking and extrusion process positions the tube column on the corresponding tube column positioning seat, ensuring the stability and reliability of the process. Correspondingly, the three-dimensional adjustment module 23 is installed on the machining table.

[0045] Therefore, the entire process of machining a blank tube into a tube column with internal and external splines at both ends can be fully automated, which improves machining efficiency, ensures machining accuracy, and reduces labor costs.

[0046] Furthermore, both the first and second mold base drive devices preferably employ servo motor-driven hydraulic components. Specifically, the hydraulic cylinder design is optimized, consisting of a main cylinder and a rapid-action cylinder. This not only enables the conversion between rapid advance speed and working speed but also allows for rapid propulsion during the idle stroke, providing a quick response. During working, the speed is reduced while the extrusion pressure is increased. This speed is adjustable; by adjusting the servo motor speed and adapting to different sized pump sets, workpieces with splines of varying lengths can be produced, ensuring product quality and dimensional stability. Moreover, in this embodiment, the rapid-action cylinder is located inside the main cylinder, thereby reducing the size of the hydraulic cylinder and facilitating its arrangement.

[0047] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A tooling for integrally forming internal and external splines of a tubular column, characterized in that: The device includes a pressing die and a moving part mechanism. The pressing die includes a first die base and a second die base that can move closer to or further away from each other. On the side of the first die base near the second die base, at least two male tube-shrinking dies and one external spline extrusion die are fixedly mounted side-by-side at equal intervals, arranged sequentially from the loading position to the loading position. On the side of the second die base near the first die base, female tube-shrinking dies are fixedly mounted, each corresponding to one of the male tube-shrinking dies, and an internal spline extrusion die is corresponding to the external spline extrusion die. The moving part mechanism includes a gripper cylinder mounting bracket extending from the loading position to the loading position. Multiple part-shifting gripper cylinders are fixedly mounted at equal intervals along the length of the gripper cylinder mounting bracket, along with a three-dimensional adjustment module for adjusting the spatial position of the gripper cylinder mounting bracket. The number of part-shifting gripper cylinders is two more than that of the tube shrinking male mold. The distance between the center lines of adjacent part-shifting gripper cylinders is equal to the distance between the center lines of adjacent tube shrinking male molds. Thus, by adjusting the position of each part-shifting gripper cylinder through the three-dimensional adjustment module, the center lines of the external spline extrusion mold and each tube shrinking male mold can simultaneously pass between the two grippers of the corresponding part-shifting gripper cylinder.

2. The tooling for integral forming of internal and external splines of the tubing column according to claim 1, characterized in that: The three-dimensional adjustment module includes a top plate, an upper slide that can be slidably mounted on the top plate via at least one first slide rail, a first drive device for driving the upper slide to move slidably, a lower slide that can be raised and lowered on the upper slide via at least one second slide rail, and a second drive device for driving the lower slide to move up and down. The lower slide can be slidably mounted on a gripper cylinder mounting bracket along the length direction of the gripper cylinder mounting bracket via at least one third slide rail. The gripper cylinder mounting bracket is equipped with a third drive device for driving the lower slide to move slidably. The extension direction of the first slide rail is perpendicular to the extension direction of the third slide rail.

3. The tooling for integral molding of internal and external splines of the tubing column according to claim 2, characterized in that: The gripper cylinder mounting bracket includes two parallel strip-shaped mounting rods extending from the loading position to the loading position. Each shifting gripper cylinder is evenly distributed and fixedly installed between the two strip-shaped mounting rods. A reinforcing support block is provided between any two adjacent shifting gripper cylinders. Each reinforcing support block is fixedly installed between the two strip-shaped mounting rods. The third slide rail is fixedly installed on the side of the two strip-shaped mounting rods that are far apart from each other. The lower slide is fixedly connected to the slider of the corresponding third slide rail through a slide rail connecting block. The third driving device is a cylinder. The cylinder body is fixedly installed on the lower slide. The piston rod of the cylinder is fixedly connected to any reinforcing support block through a cylinder connecting block.

4. The tooling for integral molding of internal and external splines of the tubing column according to claim 1, characterized in that: The external spline extrusion mold includes an external spline mold cylinder and an external spline mold core coaxially fixed in the external spline mold cylinder. The outer peripheral surface of the external spline mold core and the inner peripheral surface of the external spline mold cylinder together form an external spline extrusion forming cavity. An external spline extrusion structure is formed on the outer end wall of the external spline mold cylinder. An external spline top ring that can move along the axial direction of the external spline mold core under the drive of the external spline top ring driving device is fitted on the inner end of the external spline mold core. The internal spline extrusion mold includes an internal spline mold cylinder and an internal spline mold core coaxially fixed in the internal spline mold cylinder. The outer end of the internal spline mold cylinder has a reduced diameter to form an internal spline shaping section. The inner circumferential surface of the internal spline shaping section and the outer circumferential surface of the internal spline mold core together form an internal spline extrusion forming cavity. An internal spline extrusion structure is formed on the outer circumferential surface of the internal spline mold core. An internal spline top ring is fitted on the inner end of the internal spline mold core and can move along the axial direction of the internal spline mold core under the drive of the internal spline top ring driving device.

5. The tooling for integral molding of internal and external splines of the tubing column according to claim 4, characterized in that: The outer spline mold cylinder or the inner spline mold cylinder is equipped with a precision positioning gripper cylinder at one end near the gripper cylinder mounting bracket via a cylinder bracket. The two precision positioning grippers of the precision positioning gripper cylinder can be synchronously positioned relative to each other on both sides of the central axis of the outer spline mold core and the inner spline mold core.

6. A device for integrally forming internal and external splines of a tubular column, characterized in that: The device includes a processing machine and an automatic tube column feeding device and an automatic tube column unloading device respectively disposed on both sides of the processing machine. The processing machine is provided with a tube column inner and outer spline integral forming fixture as described in any one of claims 1-5. The automatic tube column feeding device is disposed at the feeding position of the pressure mold, and the automatic tube column unloading device is disposed at the unloading position of the pressure mold. The processing machine is equipped with a first mold base driving device for driving the first mold base closer to or away from the second mold base and a second mold base driving device for driving the second mold base closer to or away from the first mold base. The processing machine is provided with tube column positioning seats at equal intervals, respectively located between the outer spline extrusion mold and the inner spline extrusion mold and between each opposite male and female tube shrinking mold. The three-dimensional adjustment module is mounted on the processing machine.

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