Shearing-edge rolling-shaping die for automobile axle housing sleeve connecting ring

Abstract

The utility model relates to an automobile axle housing sleeve connecting ring shearing-edge rolling-shaping die which comprises an upper die and a lower die, the upper die comprises a die handle, an upper die plate, an edge rolling upper die, an upper die base plate, a shaping upper die, a shearing upper die, an upper die pressing block and a guide sleeve; the lower die comprises a material guide cover plate, a lower shearing die, a lower shearing die fixing base, a lower shaping die, a lower die base plate, a lower die plate, a material stop block, an inner guide column fixing block, a lower edge rolling die, a guide column, an ejector rod, a core rod, an inner guide column, a core rod fixing block, an air cylinder, a material pushing rod and a material pushing rod fixing block. In the stamping machining process, blank edge rolling forming and secondary shaping can be completed after a strip-shaped blank is sheared, the production process is stable, it is guaranteed that the size of a sleeve connecting ring product is stable, the three single procedures of the blank shearing procedure, the edge rolling forming procedure and the shaping procedure can be combined into the shearing-edge rolling-shaping composite procedure, and the production efficiency is improved. The production takt is improved, the productivity is increased, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of machining, and specifically discloses a cutting-rolling-shaping mold for automobile axle housing sleeve connecting ring. Background Technology

[0002] Among the main automotive axle housing structures currently on the market, one type uses a welded assembly method with sleeves spliced ​​at both ends. This method offers higher material utilization and lower manufacturing costs. The structure consists of a steel plate stamping and welding forming the middle section of the axle housing, with seamless steel pipes welded to both ends for extension. A circular connecting ring is inserted into the inner circle between the two ends of the middle section and the sleeve ends. The function of the connecting ring is to ensure that the circular tubes at both ends of the middle section are concentric with the axle housing sleeves, prevent weld burn-through during welding of the circular tubes at both ends to the sleeves, and improve the connection strength between the middle section and the sleeves.

[0003] The traditional production method for connecting rings involves two processes. First, a single-point shearing machine is used for the initial material cutting, cutting the strip into small sections. Then, a rolling machine is used for the second process, rolling the connecting ring into a circle. After the rolling process, a straight section of approximately 20mm remains on both sides of the opening of the connecting ring, resulting in insufficient roundness of the outer circle. When the round tubes at both ends of the middle section of the bridge housing are joined to the sleeve, gaps exist in the contact area between the outer circle of the connecting ring and the inner circumference of the bridge housing and sleeve. This can easily lead to leakage of the weld pool during the circumferential welding of the bridge housing and sleeve, resulting in insufficient weld toe height and other quality issues.

[0004] In addition, the rolling machine has low production efficiency, making it difficult to achieve mass production and unable to meet actual production needs. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a cutting, rolling, and shaping mold for automotive axle housing sleeve connecting rings.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A shearing-rolling-shaping die for an automotive axle housing sleeve connecting ring, comprising an upper die and a lower die. The upper die includes a die handle, an upper template, a rolling upper die, an upper die pad, a shaping upper die, a shearing upper die, an upper die pressure block, and a guide sleeve.

[0008] The lower die includes a guide cover plate, a shearing lower die, a shearing lower die fixing seat, a shaping lower die, a lower die pad, a lower template, a stop block, an inner guide post fixing block, a rolling lower die, a guide post, an ejector rod, a mandrel, an inner guide post, a mandrel fixing block, a cylinder, a push rod, and a push rod fixing block;

[0009] The die handle is installed in the middle die handle hole of the upper die plate through interference fit; the upper die base plate is fixed below the upper die plate and the die handle through bolts; the coiling upper die, the shaping upper die and the shearing upper die are all fixed below the upper die base plate through bolts and fixing pins.

[0010] Further, the shearing lower die is fixed in the side groove of the shearing lower die fixing seat through bolts and fixing pins;

[0011] The material guiding cover plate is fixed on the upper surface of the shearing lower die fixing seat through bolts; the shearing lower die fixing seat is fixed on the lower die plate through bolts and fixing pins; the shaping lower die and the coiling lower die are both fixed on the lower die base plate through bolts and fixing pins; the lower die base plate is fixed on the lower die plate through bolts and fixing pins; the inner guide column is connected with the inner guide column fixing block through interference fit.

[0012] Further, the inner guide column fixing block is fixed on the lower die plate through bolts and fixing pins; the core rod is connected with the core rod fixing block through interference fit; the end of the ejector rod is connected with the core rod fixing block through threaded connection;

[0013] The air cylinder is connected on the side of the core rod fixing block through bolts; the material pushing rod is clamped in the hole of the material pushing rod fixing block and is fastened through bolts; after the material pushing rod passes through the middle small hole of the core rod fixing block, the piston rod of the air cylinder is connected with the material pushing rod fixing block through bolts; the material blocking block is fixed on the lower die plate through bolts.

[0014] Further, the core rod fixing block is provided with two guide holes, the guide holes are gap-fitted with the inner guide column, and the core rod fixing block realizes up-down movement under the action of the ejector rod;

[0015] The material pushing rod realizes telescopic movement under the action of the air cylinder, thereby realizing the material pushing action.

[0016] The die of the utility model has the advantages that: 1. The die of the utility model collects three different stamping processing steps together, can directly realize coiling forming after strip material shearing, and can complete shaping simultaneously, the product processing process is stable, and the appearance shape and size stability of the connecting ring are guaranteed;

[0017] 2. The die of the utility model realizes feeding and stripping through the air cylinder, can optimize two processes of the traditional production mode into one process, improves the production rhythm, increases the production capacity, and reduces the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic view of the die of the utility model;

[0019] Figure 2 It is a structure schematic view of the lower die structure in the embodiment of the utility model;

[0020] Figure 3 It is a structure schematic view after one stamping process of the embodiment of the utility model is completed;

[0021] Figure 4 Structure schematic diagram after two stamping working step processes are completed for the embodiment of the utility model;

[0022] Figure 5 Structure schematic diagram after stamping processing is completed for the workpiece (sleeve connecting ring). DETAILED DESCRIPTION

[0023] Referring to Figures 1 to 4 A rear axle housing sleeve connecting ring shearing-curling-shaping die, comprising an upper die and a lower die, the upper die comprises a die handle 1, an upper die plate 2, a curling upper die 3, an upper die gasket 4, a shaping upper die 5, a shearing upper die 6, an upper die pressing block 25, a guide sleeve 26, the lower die comprises a material guiding cover plate 8, a shearing lower die 9, a shearing lower die fixing seat 10, a shaping lower die 11, a lower die gasket 12, a lower die plate 13, a material blocking block 14, an inner guide column fixing block 15, a curling lower die 16, a guide column 17, a top rod 18, a core rod 19, an inner guide column 20, a core rod fixing block 21, a pneumatic cylinder 22, a material pushing rod 23, a material pushing rod fixing block 24.

[0024] Its characteristics are that the die handle 1 is installed in the middle die handle hole of the upper die plate 2 through interference fit, the upper die gasket 4 is fixed below the upper die plate 2 and the die handle 1 through bolts, the curling upper die 3, the shaping upper die 5 and the shearing upper die 6 are all fixed below the upper die gasket 4 through bolts and fixing pins.

[0025] Further, the shearing lower die 9 is fixed in the side surface groove of the shearing lower die fixing seat 10 through bolts and fixing pins, the material guiding cover plate 8 is fixed on the upper surface of the shearing lower die fixing seat 10 through bolts, and the shearing lower die fixing seat 10 is fixed on the lower die plate 13 through bolts and fixing pins.

[0026] The shaping lower die 11 and the curling lower die 16 are both fixed on the lower die gasket 12 through bolts and fixing pins, and the lower die gasket 12 is fixed on the lower die plate 13 through bolts and fixing pins.

[0027] The inner guide column 21 is connected with the inner guide column fixing block 15 through interference fit, and the inner guide column fixing block 15 is fixed on the lower die plate 13 through bolts and fixing pins.

[0028] The core rod 19 is connected with the core rod fixing block 21 through interference fit, the end of the top rod 18 is connected with the core rod fixing block 21 in a threaded connection mode, and the pneumatic cylinder 22 is connected on the side surface of the core rod fixing block 21 through bolts.

[0029] The material pushing rod 23 is clamped in the hole of the material pushing rod fixing block 24 and is fastened through bolts, and after the material pushing rod 23 passes through the middle small hole of the core rod fixing block 21, the piston rod of the pneumatic cylinder 22 is connected with the material pushing rod fixing block 24 through bolts.

[0030] The material blocking block 14 is fixed on the lower die plate 13 by bolts.

[0031] The guide sleeve 26 is connected with the upper die plate 2 by interference fit, and the guide column 17 is connected with the lower die plate 13 by interference fit.

[0032] Further, the core rod fixing block 21 is provided with two guide holes, and the guide holes are in clearance fit with the inner guide column 20; the core rod fixing block 21 realizes up-down movement under the action of the ejector rod 18; and the material pushing rod 23 realizes telescopic movement under the action of the air cylinder 22, so as to realize the material pushing action.

[0033] The working principle of the utility model is briefly described as follows:

[0034] The sleeve connecting ring of the Xiamen Golden Dragon Sea Lion series light passenger car drive axle housing is processed through shearing, coiling and shaping processes, and the workpiece structure is shown in Figure 4 The sleeve connecting ring is made of 5.0mm thick hot-rolled plate through stamping processing, and after being cut into a strip-shaped material in the blanking process, the sleeve connecting ring can be used for shearing, coiling and shaping die processing.

[0035] First step: the rear axle housing sleeve connecting ring shearing, coiling and shaping die of the utility model is installed on a single-point open pneumatic 100T bottom with a top cylinder and an electromagnetic valve pneumatic switch press, an air pipe is used to connect the electromagnetic valve pneumatic switch and the air cylinder 22, and the air cylinder 22 is in an open state.

[0036] Second step: the sleeve connecting ring strip-shaped plate material (7) after the blanking process is passed through the guide hole below the guide cover plate 8, and the front end face of the strip-shaped plate material 18 is tightly positioned on the positioning surface of the material blocking block 14.

[0037] Third step: the press is started to stamp the sleeve connecting ring, the workbench on the machine tool moves downward, the shearing upper die 6 is driven to move downward, the outer edge blade of the shearing upper die 6 and the shearing lower die 13 jointly complete the shearing step of the connecting ring blank, as shown in Figure 1 The workbench on the press and the upper die continue to move downward, the lower edge of the coiling upper die 3 contacts the blank, and under the joint action of the coiling upper die 3 cavity and the core rod 19, the sheared blank is bent into a U-shaped blank, as shown in Figure 2 The workbench on the press and the upper die continue to move downward, the lower surface of the upper die pressing block 25 contacts the upper surface of the core rod fixing block 21, the core rod fixing block 21, the core rod 19, the ejector rod 18 and the bottom top cylinder of the press move downward, and the bottom of the U-shaped blank contacts the middle cavity of the coiling lower die 16; the workbench on the press and the upper die continue to move downward until the workbench on the machine tool runs to the lower dead point, the middle cavity of the coiling upper die 3, the core rod 19 and the coiling lower die 16 jointly complete the coiling forming of the sleeve connecting ring product.

[0038] Fourth step: the upper worktable of the press machine is returned upward to drive the upper die of the die to return upward; the bottom of the press machine is returned to the top to drive the ejector pin 18, the core rod fixing block 21 and the core rod 19 to return upward. After the upper worktable of the press machine is operated upward to the upper dead point, the electromagnetic valve pneumatic switch of the press machine is opened and closed, the piston rod of the cylinder 22 is first contracted and then opened, and the piston rod of the cylinder 22 is contracted to drive the pushing rod 23 to push the rolled workpiece 27 outward.

[0039] Fifth step: repeat step two, push the strip-shaped plate 18 to make the front end face abut against the positioning surface of the material blocking block 14.

[0040] Sixth step: repeat step three, after the worktable of the machine tool is operated to the lower dead point, the roll forming upper die 3, the core rod 19 and the roll forming lower die 16 jointly complete the second sleeve connecting ring workpiece roll forming forming step processing; the shaping upper die 5, the core rod 19 and the shaping lower die 11 jointly complete the first sleeve connecting ring workpiece shaping step processing.

[0041] Seventh step: repeat step four, after the upper worktable of the press machine is operated upward to the upper dead point, the electromagnetic valve pneumatic switch of the press machine is opened and closed, the piston rod of the cylinder 22 is contracted to drive the pushing rod 23 to push the rolled workpiece 27 outward, the shaped workpiece is pushed out, demoulded and falls into the product frame, and the product structure is as shown in Figure 5

[0042] Eighth step: repeat the operations of steps five to seven to manufacture the next workpiece.

[0043] The sleeve connecting ring is processed and manufactured by the rear axle housing sleeve connecting ring shearing-roll forming-shaping die, the size of the sleeve connecting ring can be continuously and stably ensured to meet the design requirements of product drawings, the quality problem of insufficient roundness of the sleeve connecting ring is solved, and the subsequent rear axle housing splicing ring welding demand is met. While the product quality is ensured, the production capacity is improved, the sleeve connecting ring production process is optimized from the original two processes of plate shearing and roll forming to the present one process of shearing-roll forming-shaping, the production efficiency is improved by 300%, and large-scale production and processing can be realized.

[0044] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: the technical solutions recorded in the foregoing examples can still be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the utility model examples.​

Claims

1. A shear-crim-form die for an automotive axle housing sleeve joint ring, the die comprising an upper die and a lower die, wherein: The upper die comprises a die handle (1), an upper die plate (2), a round edge upper die (3), an upper die backing plate (4), a shaping upper die (5), a shearing upper die (6), an upper die pressing block (25), and a guide sleeve (26); The lower die comprises a material guiding cover plate (8), a shearing lower die (9), a shearing lower die fixing seat (10), a shaping lower die (11), a lower die backing plate (12), a lower die plate (13), a material blocking block (14), an inner guide column fixing block (15), a round edge lower die (16), a guide column (17), a ejector rod (18), a core rod (19), an inner guide column (20), a core rod fixing block (21), a pneumatic cylinder (22), a material pushing rod (23), and a material pushing rod fixing block (24); The die handle (1) is installed in the middle die handle hole of the upper die plate (2) through interference fit; the upper die backing plate (4) is fixed below the upper die plate (2) and the die handle (1) through bolts; the round edge upper die (3), the shaping upper die (5), and the shearing upper die (6) are all fixed below the upper die backing plate (4) through bolts and fixing pins.

2. The shear-roll-form die for a tubular axle housing sleeve joint ring according to claim 1, wherein The shearing lower die (9) is fixed in the side surface groove of the shearing lower die fixing seat (10) through bolts and fixing pins; The material guiding cover plate (8) is fixed on the upper surface of the shearing lower die fixing seat (10) through bolts; the shearing lower die fixing seat (10) is fixed on the lower die plate (13) through bolts and fixing pins; the shaping lower die (11) and the round edge lower die (16) are both fixed on the lower die backing plate (12) through bolts and fixing pins; the lower die backing plate (12) is fixed on the lower die plate (13) through bolts and fixing pins; the inner guide column (20) is connected with the inner guide column fixing block (15) through interference fit.

3. The shear-roll-forming die for a tubular connecting ring of an automobile axle housing according to claim 1, wherein The inner guide column fixing block (15) is fixed on the lower die plate (13) through bolts and fixing pins; the core rod (19) is connected with the core rod fixing block (21) through interference fit; the end of the ejector rod (18) is connected with the core rod fixing block (21) through threaded connection; The pneumatic cylinder (22) is connected on the side surface of the core rod fixing block (21) through bolts; the material pushing rod (23) is clamped in the hole of the material pushing rod fixing block (24) and is fastened through bolts; after the material pushing rod (23) passes through the middle small hole of the core rod fixing block (21), the piston rod of the pneumatic cylinder (22) is connected with the material pushing rod fixing block (24) through bolts; the material blocking block (14) is fixed on the lower die plate (13) through bolts.

4. The shear-roll-form die for a tubular axle housing sleeve connection ring according to claim 1, wherein The core rod fixing block (21) is provided with two guide holes, and the gap fit is formed between the guide holes and the inner guide column (20); the core rod fixing block (21) realizes up and down movement under the action of the ejector rod (18); The material pushing rod (23) realizes telescopic movement and thus realizes the material pushing action under the action of the pneumatic cylinder (22).

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