CN116900149A - Vertical hydraulic axle housing bulging equipment - Google Patents

Abstract

The invention relates to the technical field of automobile part machining, and discloses vertical hydraulic axle housing bulging equipment, which comprises a hydraulic machine body and a hydraulic bulging system, wherein the hydraulic machine body comprises a frame provided with a workbench, a liquid bulging tank is fixedly arranged on the workbench, the hydraulic bulging system comprises a bulging die, the bottom of the liquid bulging tank is used for bulging an axle housing workpiece, the liquid bulging tank is connected with an automatic water inlet mechanism, the bulging die comprises a left module, a right module, an upper module and a lower module, transverse bulging driving parts for driving the left module and the right module to move oppositely or reversely are respectively arranged on the left side and the right side of the bulging die, a longitudinal bulging driving part is arranged above the bulging die, and the longitudinal bulging driving part is connected with the upper module of the bulging die, so that the problem of low liquid bulging forming machining efficiency of the axle housing workpiece is effectively solved.

Description

A vertical hydraulic axle housing bulging equipment

Technical field

The invention relates to the technical field of automobile parts processing, and in particular to a vertical hydraulic axle housing bulging equipment.

Background technique

From the performance of the entire vehicle to the components, it has become the main topic of current industrial research. As one of the important parts of the car, the axle housing not only plays a supporting role in the car, but also serves as the differential, main reducer and Housing for the drive wheel transmission. The quality of the automobile axle housing has a great impact on the performance of the entire vehicle. The axle housing not only needs to have sufficient strength, stiffness and fatigue life, but also has a simple structure, low cost, light weight, and is easy to disassemble and maintain.

At present, the axle housing production generally uses large-tonnage special hydraulic forming equipment to drive the hydraulic axle housing molding mold to realize the partial molding of the automobile axle housing axle housing. The molding method is to use high-pressure water to expand the seamless steel pipe to make it larger, so as to achieve the molding of the automobile drive axle housing. Size, high-pressure water directly enters the inner cavity of the seamless steel pipe through the mold. Since high-pressure water has a high demand for sealing, an excessively large liquid inlet can easily cause leakage. Therefore, the liquid inlet on the mold is generally made smaller, resulting in The liquid flow rate is small, so it takes a long time for the water pressure in the seamless steel pipe to reach the liquid expansion pressure, which makes the processing efficiency low. Moreover, the existing molding equipment can only produce one product at a time, which is difficult to meet the production demand.

Contents of the invention

The purpose of the present invention is to provide a vertical hydraulic axle housing bulging equipment, which aims to solve the technical problem of low processing efficiency of liquid expansion forming of axle housing workpieces in the background technology, and has the advantages of high processing efficiency, high processing precision, and low production cost. .

The above technical objectives of the present invention are achieved through the following technical solutions:

A vertical hydraulic axle housing bulging equipment, including a hydraulic press body and a hydraulic bulging system. The hydraulic press body includes a frame equipped with a workbench, and a liquid expansion water tank is fixed on the workbench. The hydraulic bulging system The system includes a bulging mold with a liquid expansion tank at the bottom for bulging of the bridge housing workpiece. The liquid expansion tank is connected to an automatic water inlet mechanism. The bulging mold includes a left module, a right module, an upper module and a lower module. The left and right sides of the expansion mold are respectively provided with transverse expansion drive parts for driving the left module and the right module to move toward each other or in reverse. A longitudinal expansion drive part is provided above the expansion mold. The longitudinal expansion drive part The upper part is connected to the upper module of the expansion mold.

By adopting the above technical solution, the hydraulic bulging system realizes the liquid expansion forming operation of the axle housing workpiece through the bulging die. When loading, the axle housing workpiece blank is first placed on the lower module, and then the left module and the right module are driven through the transverse bulging drive part. The modules move toward each other, and at the same time, the longitudinal bulging driving part drives the upper module to move downward, so that the left module, the right module, the upper module and the lower module are molded together, thereby extruding the axle housing workpiece blank and making the axle housing workpiece blank Both ends are sealed in the cavity of the bulging die, and then high-pressure water is injected into the inner cavity of the axle housing workpiece through the cavity of the bulging die, so that the axle housing workpiece blank expands from the inside to achieve the molding of automobile drive axle housing. size of. The liquid expansion molding system is installed in the liquid expansion tank so that the expansion mold can be wrapped by water, so that the inner cavity of the axle housing workpiece blank can be filled in advance during the process of placing the axle housing workpiece blank into the expansion mold. liquid, thereby effectively saving the water replenishment time of the bulging action of the axle housing workpiece blank, and effectively improving the processing efficiency of the liquid bulging forming of the axle housing workpiece. In addition, the water in the liquid bulging tank can also carry out the bulging mold during the bulging process. Lower the temperature so that the expansion mold is always close to a constant temperature, preventing the axle housing workpiece from generating heat during the liquid expansion process and transferring it to the expansion mold, which will cause the expansion mold to expand and contract with heat, thus affecting the machining accuracy of the axle housing workpiece. question.

The present invention is further configured as follows: the left module and the right module are respectively provided with a left mold cavity and a right mold cavity with the same shape and structure as the two ends of the axle housing workpiece, and the left mold cavity is connected to a liquid-filled high-pressure pipe, The right mold cavity is connected to a pressure relief high-pressure pipe, and the upper module and the lower module are respectively provided with upper mold cavities and lower mold cavities with the same shape and structure as the outer walls of the upper and lower sides of the bridge housing workpiece Pipa bag.

By adopting the above technical solution, the left mold cavity and the right mold cavity are used to laterally squeeze and shape the two ends of the axle housing workpiece respectively, so that the two ends of the axle housing workpiece reach the set shape and size. At the same time, the left mold cavity and the filling The liquid high-pressure pipe is connected, so that the left mold can also fill the inner cavity of the axle housing workpiece with high-pressure water through the liquid-filled high-pressure pipe, so that the axle housing workpiece blank expands from the inside, thereby realizing the pipa overmolding of the axle housing workpiece. After the workpiece is formed, the axle housing workpiece can be removed after the pressure relief is completed through the pressure relief high-pressure pipe connected to the right mold cavity.

A further arrangement of the present invention is that the transverse bulging driving part includes a left thrust hydraulic cylinder and a right thrust hydraulic cylinder which are provided at both ends of the workbench for applying bulging thrust to the left module and the right module respectively, and the left module The two ends of the right module are respectively connected to the piston rods of the left thrust hydraulic cylinder and the right thrust hydraulic cylinder. The left module and the right module are respectively fixed on the transverse guide rods on both sides of the liquid expansion tank and are in sliding fit.

By adopting the above technical solution, the left thrust hydraulic cylinder and the right thrust hydraulic cylinder are used to apply lateral force to the left module and the right module respectively, so that the left module and the right module move towards each other or in the opposite direction. When the left module and the right module move towards each other, It can apply bulging thrust to both ends of the axle housing workpiece. When the left module and the right module move in reverse, they will be separated from the axle housing workpiece after the bulging is completed, which facilitates the unloading of the axle housing workpiece. The horizontal guide rod is used It guides the left module and the right module during the mutual or reverse movement of the left module and the right module. The movement trajectories of the two modules are always on the same axis, thus effectively ensuring the stability of the molding quality of the axle housing workpiece.

A further configuration of the present invention is that the longitudinal bulging driving part includes a first driving rod and a second driving rod, and both of the first driving rod and the second driving rod are connected to a fixed shaft fixed on the frame above the workbench. Rotatingly connected, the lower ends of the first driving rod and the second driving rod are respectively hinged with the first sliding plate and the second sliding plate arranged on the top of the upper module. The first sliding plate and the second sliding plate are respectively connected with the transverse sliding plate on the top of the upper module. The grooves are slidingly matched, and the opposite ends of the first sliding plate and the second sliding plate are connected by a return spring. The ends of the first sliding plate and the second sliding plate that are far away from each other are respectively connected with the limiting plates fixed on the left module and the right module. The two limiting plates are opposite to each other, and the limiting plate one and the limiting plate two are respectively located above the first sliding plate and the second sliding plate.

By adopting the above technical solution, the first and second limiting plates are used to limit the heights of the first and second sliding plates respectively, so that the first and second sliding plates are always positioned between the first and second limiting plates. below the limiting plate, so that after the left module and the right module move toward the set position, the first sliding plate and the second sliding plate can respectively conflict with the sides of the left module and the right module. As the left module and the right module continue to move toward each other, The first sliding plate and the second sliding plate respectively move toward each other from both ends of the return spring and squeeze the returning spring. When the first sliding plate and the second sliding plate move toward each other, the lower ends of the first and second driving rods hinged thereto move toward each other. , so that the upper ends of the first driving rod and the second driving rod press the fixed shaft upward, and the first driving rod and the second driving rod push the first sliding plate and the second sliding plate downward under the reaction force of the fixed shaft, As a result, the upper module moves downward along with the first sliding plate and the second sliding plate, so that the left module and the right module move toward each other while the upper module moves downward, so that the left module, the right module, the upper module and the lower module are molded together, and when the bridge After the bulging of the shell workpiece is completed, the left module and the right module move in reverse direction, and the first sliding plate and the second sliding plate slide in the opposite direction under the restoring force of the return spring, so that the lower end of the third sliding plate is hinged with the first sliding plate and the second sliding plate respectively. The lower ends of the first driving rod and the second driving rod move in reverse direction. When the lower ends of the first driving rod and the second driving rod move in the opposite direction, their upper ends exert pulling force on the fixed shaft. Under the action of the reverse pulling force of the fixed shaft, the third driving rod moves in reverse direction. The lower ends of the first driving rod and the second driving rod begin to move upward, so that the upper module moves upward along with the first sliding plate and the second sliding plate, so that while the left module and the right module are separated, the upper module and the lower module are also separated, which facilitates the separation of the left module and the right module. The formed axle housing workpiece is unloaded and the above process is repeated to achieve continuous processing of the axle housing workpiece.

A further arrangement of the present invention is that the transverse chute is an inverted "T"-shaped groove, the cross-sections of the first and second sliding plates match the transverse chute, and the first and second driving rods are respectively Hinged with the tops of the first sliding plate and the second sliding plate.

By adopting the above technical solution, the transverse chute is an inverted "T" shaped slot, so that the first sliding plate and the second sliding plate can slide horizontally relative to the transverse chute without being separated from the upper module, so that the upper module can follow the first The sliding plate and the second sliding plate only move up and down, thereby realizing the mold closing and mold separating operations of the upper module and the lower module. The first driving rod and the second driving rod are respectively hinged with the tops of the first and second sliding plates, so that the first driving rod When the second driving rod rotates toward or in the opposite direction around the fixed axis, it can drive the first sliding plate and the second sliding plate to move toward or in opposite directions, and at the same time, it can also move downward or upward, thereby driving the upper module toward or away from the lower module. Movement to achieve the mold closing and mold separation operations of the upper module and the lower module.

A further configuration of the present invention is that the hydraulic bulging system includes two sets of bulging dies with the same structure and arranged in parallel, one set of bulging dies is connected to the transverse bulging driving part, and the two sets of bulging dies are linked by power. The power linkage mechanism includes gear one arranged between the two left modules in the two sets of bulging dies and gear two arranged between the two right modules in the two sets of bulging dies. The gear one passes through the rotating shaft one. It is rotatably connected to the bottom of the liquid expansion tank. The gear two is rotatably connected to the bottom of the liquid expansion tank through the rotating shaft two. The gear one meshes with the rack one and rack two on the two left modules respectively. The gear two respectively Engage with rack three and rack four on the two right modules.

By adopting the above technical solution, two sets of bulging dies can realize the alternating molding operation of the axle housing workpiece at two stations, that is, one station is producing while the other station is loading and unloading, effectively reducing the waiting time for loading and unloading. , the production efficiency is higher, and the two sets of bulging dies are connected through a power linkage mechanism to realize the power linkage and conversion between the two sets of bulging dies, so that only one set of transverse bulging driving parts is needed to realize the two sets of bulging Alternate molding operation of the mold: first, load the bulging mold connected to the transverse bulging driving part, and then drive the left module and the right module in a set of bulging dies connected to it through the transverse bulging driving part to move toward each other The two ends of the loaded axle housing workpiece are extruded and bulged. During bulging, rack one and rack three on the left and right modules of the bulging die move toward each other with the left and right modules respectively. When rack one and rack three move in opposite directions, they respectively drive the gears one and two that mesh with them to rotate relative to each other. When gears one and gear two rotate relative to each other, they drive the gears that mesh with them on the left and right modules of the other set of expansion molds. Rack two and rack four move in reverse, causing the left module and right module in another set of bulging dies to move in reverse. When the left module and right module in another set of bulging dies move in reverse, they will be the same as the previous one. The bulged axle housing workpiece is separated to facilitate the unloading of the axle housing workpiece that has completed the bulging operation. This is repeated to achieve continuous and alternate forming operations between the two sets of bulging dies. The structure is simple and the operation is convenient.

A further configuration of the present invention is that the side of the workbench opposite the two sets of bulging dies is respectively provided with a manipulator for loading and unloading the two sets of bulging dies.

By adopting the above technical solution, two sets of bulging dies form a dual-station structure. Under the control of PLC logic, the manipulator cooperates with the two sets of bulging dies to achieve continuous and alternate production at one station while the other station performs loading and unloading operations. The operating mode effectively improves the production efficiency of axle housing workpieces.

A further configuration of the present invention is that the automatic water inlet mechanism includes a water storage tank arranged on the frame, the water storage tank is located above the workbench, and a water inlet pipe is provided at the bottom of the water storage tank, and the water inlet pipe extends into the liquid. In the expansion tank, the bottom of the liquid expansion tank is fixed with a support rod coaxial with the water inlet pipe. A floating plug is provided on the support rod. The floating plug slides with the outer wall of the water inlet pipe. The floating plug is The diameter is larger than the diameter of the water inlet pipe, and the density of the floating plug is smaller than the density of water.

By adopting the above technical solution, the water storage tank is used to store a certain amount of supply water. When the water level in the expansion tank is high, the floating plug slides upward along the support rod under the action of buoyancy and closes the gap between the water inlet pipe and the support rod. Block it so that the water in the water storage tank will not enter the liquid expansion tank through the water inlet pipe, so that the water level in the liquid expansion tank will meet production needs without overflowing. When the water in the liquid expansion tank decreases, the water level will decrease. , the floating plug will decrease synchronously with the water level in the liquid expansion tank. Therefore, the floating plug will gradually separate from the water inlet pipe, causing the gap between the water inlet pipe and the support rod to be opened, and the water in the storage tank will pass through the inlet under the action of gravity. The gap between the water pipe and the support rod enters the liquid expansion tank, thereby replenishing the liquid expansion tank, until the water level in the liquid expansion tank rises to the point where the floating plug rises again to block the gap between the water inlet pipe and the support rod. It only needs to manually add water to the water tank regularly, and there is no need to frequently start the water pump to replenish the liquid expansion tank. The gravity replenishment method replaces the replenishment process of the water pump, which not only has low production costs, but also has high water replenishment efficiency.

The beneficial effects of the present invention are:

1. In the present invention, the liquid expansion molding system is arranged in the liquid expansion water tank, so that the expansion mold can be wrapped by water, so that when the axle housing workpiece blank is loaded and placed in the expansion mold, the inner content of the axle housing workpiece blank is The cavity can be filled with liquid in advance, thus effectively saving the water replenishment time of the axle housing workpiece blank during the bulging action, and effectively improving the processing efficiency of the axle housing workpiece's liquid expansion molding. In addition, the water in the liquid expansion tank can also be used during the bulging process. Cool the expansion mold so that the expansion mold is always close to a constant temperature to prevent the axle housing workpiece from generating heat during the liquid expansion process and transferring it to the expansion mold, resulting in thermal expansion and contraction of the expansion mold, resulting in damage to the axle housing workpiece. Problems affecting processing accuracy.

2. The present invention can realize the alternating molding operation of the axle housing workpiece at two stations through two sets of bulging dies, that is, one station is producing while the other station is loading and unloading operations, which effectively reduces the waiting time for loading and unloading. The production efficiency is higher, and the two sets of bulging dies are connected through a power linkage mechanism to realize the power linkage and conversion between the two sets of bulging dies, so that only one set of transverse bulging driving parts is needed to realize the two sets of bulging Alternating molding operation of the mold: First, load the bulging mold connected to the transverse bulging driving part, and then drive the left module and the right module in a set of bulging dies connected to it through the transverse bulging driving part to move toward each other. Both ends of the loaded axle housing workpiece are extruded and bulged. During bulging, rack one and rack three on the left and right modules of the bulging die move toward each other with the left and right modules respectively. When gear one and rack three move in opposite directions, they respectively drive the gear one and gear two that mesh with them to rotate relative to each other. When gear one and gear two rotate relative to each other, they drive the racks that mesh with them on the left and right modules of the other set of expansion molds. The two and rack four move in reverse, causing the left and right modules in another set of bulging dies to move in reverse. When the left and right modules in another set of bulging dies move in reverse, they are the same as the previous one that has completed expansion. The shaped axle housing workpiece is separated to facilitate the unloading of the axle housing workpiece that has completed the bulging operation. This is repeated to achieve continuous and alternate forming operations between the two sets of bulging dies. The structure is simple and the operation is convenient.

3. The present invention drives the first sliding plate and the second sliding plate to move in opposite or reverse directions by moving the left module and the right module in opposite or reverse directions, so that the first driving rod and the second sliding plate are respectively hinged on the upper ends of the first sliding plate and the second sliding plate. The lower ends of the two driving rods move toward or in opposite directions, so that when the upper ends of the first driving rod and the second driving rod rotate toward or in opposite directions around the fixed shaft, the first sliding plate and the third sliding plate are driven by the reverse force of the fixed shaft. The two sliding plates move downward or upward at the same time, thereby driving the upper module to move closer to or away from the lower module, thereby realizing the mold closing and mold separation operations of the upper module and the lower module, that is, the mold closing and mold separation of the left module and the right module are realized. At the same time as the mold is being molded, the upper module and the lower module have the effect of synchronous mold closing and mold splitting.

4. The present invention automatically replenishes water in the liquid expansion tank through an automatic water inlet device. The water storage tank in the automatic water inlet device is used to store a certain amount of supply water. When the water level in the liquid expansion tank is high, the floating plug acts as a buoyancy force. Slide the lower edge of the support rod upward and block the gap between the water inlet pipe and the support rod, so that the water in the water storage tank will not enter the liquid expansion tank through the water inlet pipe, so that the water level in the liquid expansion tank can meet production needs while It will not overflow. When the water in the liquid expansion tank decreases and the water level decreases, the floating plug will decrease synchronously with the water level in the liquid expansion tank. Therefore, the floating plug will gradually separate from the water inlet pipe, so that the gap between the water inlet pipe and the support rod The gap is opened, and the water in the water tank enters the liquid expansion tank through the gap between the water inlet pipe and the support rod under the action of gravity, thereby replenishing the liquid expansion tank until the water level in the liquid expansion tank rises to the floating plug It rises again until the gap between the water inlet pipe and the support rod is blocked. It only needs to manually add water to the water tank regularly. There is no need to frequently start the water pump to replenish the liquid expansion tank, and the gravity replenishment method replaces the replenishment process of the water pump. Not only is the production cost low, but the water replenishment efficiency is high.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of the overall structure of a vertical hydraulic axle housing bulging equipment of the present invention.

Figure 2 is a schematic cross-sectional structural diagram of a vertical hydraulic axle housing bulging equipment of the present invention.

Figure 3 is a schematic structural diagram of the automatic water inlet mechanism in a vertical hydraulic axle housing bulging equipment of the present invention.

Figure 4 is a schematic structural diagram of the power linkage mechanism in a vertical hydraulic axle housing bulging equipment of the present invention.

In the figure, 1. Hydraulic press body; 101. Workbench; 102. Frame; 2. Hydraulic expansion system; 3. Liquid expansion tank; 4. Automatic water inlet mechanism; 401. Water tank; 402. Water inlet pipe; 403. Support rod; 404, floating plug; 5, axle housing workpiece; 6, expansion mold; 601, left module; 602, right module; 603, upper module; 604, lower module; 605, left mold cavity; 606, right mold cavity; 607, upper mold cavity; 608, lower mold cavity; 609, limit plate one; 610, limit plate two; 611, transverse chute; 7, transverse bulging drive part; 701, left thrust hydraulic cylinder; 702 , right thrust hydraulic cylinder; 8. Longitudinal expansion drive part; 801. First drive rod; 802, second drive rod; 803, fixed shaft; 804, first slide plate; 805, second slide plate; 806, return spring; 9. Liquid-filled high-pressure pipe; 10. Pressure-relief high-pressure pipe; 11. Power linkage mechanism; 1101. Gear one; 1102. Gear two; 1103. Rotating shaft one; 1104. Rotating shaft two; 1105. Rack one; 1106. Rack Two; 1107, rack three; 1108, rack four; 12, transverse guide rod; 13, manipulator.

Detailed ways

The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

As shown in Figures 1 to 4, a vertical hydraulic axle housing bulging equipment includes a hydraulic press body 1 and a hydraulic bulging system 2. The hydraulic press body 1 includes a frame 102 with a workbench 101. The workbench 101 is fixed with a liquid expansion tank 3. The hydraulic bulging system 2 includes a bulging die 6 provided at the bottom of the liquid expansion tank 3 for bulging the axle housing workpiece 5. The liquid expansion tank 3 is connected with an automatic water inlet mechanism. 4 connection, the expansion mold 6 includes a left module 601, a right module 602, an upper module 603 and a lower module 604. The left and right sides of the expansion mold 6 are respectively provided with a device for driving the left module 601 and the right module 602 toward each other or The reversely moving transverse bulging driving part 7 is provided with a longitudinal bulging driving part 8 above the bulging die 6 , and the longitudinal bulging driving part 8 is connected to the upper module 603 of the bulging die 6 .

Further, the left module 601 and the right module 602 are respectively provided with a left mold cavity 605 and a right mold cavity 606 with the same shape and structure as the two ends of the axle housing workpiece 5. The left mold cavity 605 is connected with the liquid-filled high-pressure pipe. 9 is connected, and the right mold cavity 606 is connected with the pressure relief high-pressure pipe 10. The upper module 603 and the lower module 604 are respectively provided with upper mold cavities with the same shape and structure as the upper and lower outer walls of the axle housing workpiece 5 Pipa bag. 607 and lower mold cavity 608.

Further, the transverse bulging driving part 7 includes a left thrust hydraulic cylinder 701 and a right thrust hydraulic cylinder 702 which are provided at both ends of the workbench 101 for applying bulging thrust to the left module 601 and the right module 602 respectively. The two ends of the left module 601 and the right module 602 are respectively connected to the piston rods of the left thrust hydraulic cylinder 701 and the right thrust hydraulic cylinder 702. The left module 601 and the right module 602 are respectively fixed on the transverse guides on both sides of the liquid expansion tank 3. Rod 12 slide fit.

Further, the longitudinal bulging driving part 8 includes a first driving rod 801 and a second driving rod 802. Both of the first driving rod 801 and the second driving rod 802 are fixed on the frame 102 above the workbench 101. The fixed shaft 803 is rotatably connected, and the lower ends of the first driving rod 801 and the second driving rod 802 are respectively hinged with the first sliding plate 804 and the second sliding plate 805 provided on the top of the upper module 603. The two sliding plates 805 are respectively slidably matched with the transverse sliding grooves 611 on the top of the upper module 603. The opposite ends of the first sliding plate 804 and the second sliding plate 805 are connected by a return spring 806. The first sliding plate 804 and the second sliding plate 805 are far away from each other. One end is opposite to the limit plate one 609 and the limit plate two 610 fixed on the left module 601 and the right module 602 respectively. The limit plate one 609 and the limit plate two 610 are respectively positioned between the first slide plate 804 and the second slide plate 804. Above skateboard 805.

Further, the transverse chute 611 is an inverted "T" shaped slot, the cross-sections of the first sliding plate 804 and the second sliding plate 805 match the transverse chute 611, and the first driving rod 801 and the second driving rod 802 is hinged to the top of the first sliding plate 804 and the second sliding plate 805 respectively.

Furthermore, the hydraulic bulging system 2 includes two sets of bulging dies 6 with the same structure and arranged in parallel. One set of bulging dies 6 is connected to the transverse bulging driving part 7 , and the two sets of bulging dies 6 are connected by power. The linkage mechanism 11 is connected. The power linkage mechanism 11 includes a gear one 1101 disposed between the two left modules 601 in the two sets of bulging dies 6 and a gear 2 disposed between the two right modules 602 in the two sets of bulging dies 6. 1102. The gear one 1101 is rotatably connected to the bottom of the liquid expansion tank 3 through the rotating shaft 1103. The gear two 1102 is rotatably connected to the bottom of the liquid expansion tank 3 through the rotating shaft 1104. The gear one 1101 is connected to the two left modules respectively. The first rack 1105 and the second rack 1106 on the 601 mesh, and the second gear 1102 meshes with the third rack 1107 and the fourth rack 1108 on the two right modules 602 respectively.

Furthermore, the side of the workbench 101 opposite to the two sets of bulging dies 6 is respectively provided with a manipulator 13 for loading and unloading the two sets of bulging dies 6 .

Further, the automatic water inlet mechanism 4 includes a water storage tank 401 provided on the frame. The water storage tank 401 is located above the workbench 101. A water inlet pipe 402 is provided at the bottom of the water storage tank 401. The water inlet pipe 402 Extend into the liquid expansion tank 3. The bottom of the liquid expansion tank 3 is fixed with a support rod 403 coaxial with the water inlet pipe 402. A floating plug 404 is provided on the support rod 403. The floating plug 404 is connected to the water inlet pipe. The outer wall of 402 is slidingly fitted, the diameter of the floating plug 404 is larger than the diameter of the water inlet pipe 402, and the density of the floating plug 404 is smaller than the density of water.

The working principle of the present invention: the liquid expansion forming system 2 realizes the liquid expansion forming operation of the axle housing workpiece 5 through the bulging mold 6. When loading, the axle housing workpiece 5 blank is first placed on the lower module 604, and then through the transverse bulging drive part 7 drives the left module 601 and the right module 602 to move toward each other, and at the same time drives the upper module 603 to move downward through the longitudinal bulging driving part 8, so that the left module 601, the right module 602, the upper module 603 and the lower module 604 are molded together, thereby closing the bridge. The shell workpiece 5 blank is extruded and the two ends of the axle housing workpiece 5 blank are sealed in the cavity of the expansion die 6, and then high-pressure water is injected into the inner cavity of the axle housing workpiece 5 through the cavity of the expansion die 6 , so that the axle housing workpiece 5 blank expands from the inside to reach the size required for automobile drive axle housing molding. The liquid expansion forming system 2 is arranged in the liquid expansion tank 3 so that the expansion mold 6 can be wrapped by water, so that when the axle housing workpiece 5 blank is loaded and placed in the expansion mold 6, the axle housing workpiece 5 blank is The inner cavity can be filled with liquid in advance, thereby effectively saving the water replenishing time of the billet bulging action of the axle housing workpiece 5, and effectively improving the liquid expansion forming processing efficiency of the axle housing workpiece 5. In addition, the water in the liquid expansion tank 3 can also be During the bulging process, the bulging die 6 is cooled so that the bulging die 6 is always close to a constant temperature to prevent the axle housing workpiece 5 from generating heat during the liquid expansion process and transferring it to the bulging die 6, thereby causing the bulging die 6 to expand and cool. shrinkage, thereby causing a problem that affects the machining accuracy of the axle housing workpiece 5.

Claims (8)

1. Vertical hydraulic axle housing bulging equipment, including hydraulic press body (1) and hydraulic pressure bulging system (2), its characterized in that: the hydraulic press body (1) is including frame (102) that is equipped with workstation (101), be fixed on workstation (101) and be equipped with liquid bulging channel (3), hydraulic bulging system (2) are including setting up the bulging mould (6) that liquid bulging channel (3) bottom is used for axle housing work piece (5) bulging, liquid bulging channel (3) are connected with automatic feed mechanism (4), bulging mould (6) are including left module (601), right module (602), go up module (603) and lower module (604), the left and right sides of bulging mould (6) are equipped with respectively and are used for driving left module (601) and right module (602) looks or the horizontal bulging drive part (7) of reverse motion, the top of bulging mould (6) is equipped with vertical bulging drive part (8), and vertical bulging drive part (8) are connected with last module (603) of bulging mould (6).

2. A vertical hydraulic axle housing bulging apparatus according to claim 1, wherein: the left die cavity (605) and the right die cavity (606) which are the same as the shape structures of the two ends of the axle housing workpiece (5) are respectively arranged on the left die module (601) and the right die module (602), the left die cavity (605) is communicated with the liquid filling high-pressure pipe (9), the right die cavity (606) is communicated with the pressure releasing high-pressure pipe (10), and the upper die cavity (607) and the lower die cavity (608) which are the same as the shape structures of the outer walls of the upper side and the lower side of the axle housing workpiece (5) lute bag are respectively arranged on the upper die module (603) and the lower die module (604).

3. A vertical hydraulic axle housing bulging apparatus according to claim 2, wherein: the horizontal bulging driving portion (7) comprises a left thrust hydraulic cylinder (701) and a right thrust hydraulic cylinder (702) which are arranged at two ends of the workbench (101) and used for applying bulging thrust to a left module (601) and a right module (602) respectively, two ends of the left module (601) and the right module (602) are connected with piston rods of the left thrust hydraulic cylinder (701) and the right thrust hydraulic cylinder (702) respectively, and the left module (601) and the right module (602) are fixed on transverse guide rods (12) at two sides of the liquid bulging water tank (3) respectively in a sliding fit mode.

4. A vertical hydraulic axle housing bulging apparatus according to claim 3, wherein: the longitudinal bulging driving portion (8) comprises a first driving rod (801) and a second driving rod (802), wherein the first driving rod (801) and the second driving rod (802) are respectively connected with a fixed shaft (803) fixed on a frame (102) above the workbench (101) in a rotating mode, the lower ends of the first driving rod (801) and the second driving rod (802) are respectively hinged to a first sliding plate (804) and a second sliding plate (805) arranged on the top of the upper module (603), the first sliding plate (804) and the second sliding plate (805) are respectively in sliding fit with a transverse sliding groove (611) on the top of the upper module (603), one ends of the first sliding plate (804) and the second sliding plate (805) which are opposite to each other are respectively connected with a limiting plate (609) and a limiting plate (610) fixed on the left module (601) and the right module (602), and one ends of the first sliding plate (609) and the second sliding plate (805) which are opposite to each other are respectively connected with a reset spring (806).

5. A vertical hydraulic axle housing bulging apparatus according to claim 4, wherein: the transverse sliding groove (611) is an inverted T-shaped groove, the cross sections of the first sliding plate (804) and the second sliding plate (805) are matched with the transverse sliding groove (611), and the first driving rod (801) and the second driving rod (802) are hinged with the tops of the first sliding plate (804) and the second sliding plate (805) respectively.

6. A vertical hydraulic axle housing bulging apparatus according to claim 1, wherein: the hydraulic bulging system (2) comprises two groups of bulging dies (6) which are identical in structure and are arranged in parallel, one group of bulging dies (6) is connected with a transverse bulging driving part (7), the two groups of bulging dies (6) are connected through a power linkage mechanism (11), the power linkage mechanism (11) comprises a first gear (1101) arranged between two left modules (601) in the two groups of bulging dies (6) and a second gear (1102) arranged between two right modules (602) in the two groups of bulging dies (6), the first gear (1101) is rotationally connected with the bottom of a liquid bulging tank (3) through a first rotating shaft (1103), the second gear (1102) is rotationally connected with the bottom of the liquid bulging tank (3) through a second rotating shaft (1104), the first gear (1101) is respectively meshed with a first rack (1105) and a second rack (1106) on the two left modules (601), and the second gear (1102) is respectively meshed with a third rack (1107) and a fourth rack (1108) on the two right modules (602).

7. The vertical hydraulic axle housing bulging apparatus of claim 6, wherein: one side of the workbench (101) opposite to the two groups of expansion dies (6) is respectively provided with a manipulator (13) for feeding and discharging the two groups of expansion dies (6).

8. The vertical hydraulic axle housing bulging apparatus of claim 7, wherein: automatic mechanism (4) of intaking is including setting up water storage tank (401) in the frame, water storage tank (401) are located workstation (101) top, the bottom of water storage tank (401) is equipped with a inlet tube (402), in inlet tube (402) stretched into liquid bloated basin (3), liquid bloated basin (3) bottom is fixed be equipped with inlet tube (402) coaxial bracing piece (403), be equipped with a floating plug (404) on bracing piece (403), the outer wall sliding fit of floating plug (404) and inlet tube (402), the diameter of floating plug (404) is greater than the diameter of inlet tube (402), the density of floating plug (404) is less than the density of water.