CN-121972571-A - Forming die for bogie side beam, bogie side beam and manufacturing method

CN121972571ACN 121972571 ACN121972571 ACN 121972571ACN-121972571-A

Abstract

The embodiment of the application provides a forming die of a bogie side beam, the bogie side beam and a manufacturing method, wherein the forming die comprises a lower die, the lower die is provided with a first workpiece groove and a second workpiece groove, the shape of the inner wall of the first workpiece groove is matched with the shape of a part of a bogie side beam plate needing to be bent for the first time, the shape of the inner wall of the second workpiece groove is matched with the shape of a part of the side beam plate needing to be bent for the second time, the upper die is provided with a first protruding part and a second protruding part, the surface shape of the first protruding part is matched with the inner wall of the first workpiece groove, and the surface shape of the second protruding part is matched with the inner wall of the second workpiece groove. The forming die for the bogie side beams, the bogie side beams and the manufacturing method provided by the embodiment of the application can reduce the occupation of the working space, improve the yield and reduce the production cost.

Inventors

ZHENG JIANKE
GAO DEJIA
LI MINGLIANG
WANG WEI
LIU XUANYOU
ZHAO ZIXUAN
WU ZHIYONG
ZHAO JING
WANG CHEN
WANG ZHIYONG

Assignees

中车唐山机车车辆有限公司

Dates

Publication Date: 20260505
Application Date: 20260331

Claims (10)

1. A forming die for a bogie side beam, comprising: the side beam plate is provided with a side beam plate, a lower die, a first workpiece groove and a second workpiece groove, wherein the shape of the inner wall of the first workpiece groove is matched with the shape of the part of the side beam plate of the bogie, which needs to be bent for the first time; the upper die is provided with a first protruding part and a second protruding part, the surface shape of the first protruding part is matched with the inner wall of the first workpiece groove, and the surface shape of the second protruding part is matched with the inner wall of the second workpiece groove.
2. The forming die of claim 1, wherein the first workpiece groove and the second workpiece groove are arranged in the middle of the lower die side by side, and the opposite side edges of the lower die are respectively provided with a die clamping guide groove for matching with die clamping guide blocks arranged on two sides of the upper die.
3. The forming die of claim 1, wherein the middle part of the first workpiece groove is provided with a first propping mechanism, and the first propping mechanism is used for bearing the middle part of the bogie side beam plate; The curvature of the first guide circular arc is consistent with that of the first forming circular arc, and is consistent with that of the bending areas at the two ends of the side beam plate.
4. A forming die as claimed in claim 3, wherein the first tightening mechanism comprises: The side beam plate comprises a side beam plate, a first air pressure pad, a plurality of first cylinder supporting grooves, a first positioning bulge and a first rotation preventing bulge, wherein the side surface of the first air pressure pad is provided with a first positioning bulge and a first rotation preventing bulge which are used for positioning with the side beam plate; The telescopic rod of the first pneumatic cylinder is propped against the first pneumatic cylinder supporting groove and is used for pushing the first pneumatic cushion to lift.
5. The forming die of claim 1, wherein a second tightening mechanism is arranged in the second workpiece groove and is used for supporting the middle part of the bogie side beam; the curvature of the second guide circular arc is consistent with that of the second forming circular arc, and is consistent with that of the middle bending area of the side beam plate.
6. The forming die of claim 5, wherein the second tightening mechanism comprises: the side beam plate is provided with a first positioning protrusion and a first rotation preventing protrusion, and the inner side surface of the first air cylinder support groove is provided with a plurality of first cylinder support grooves; The telescopic rod of the second pneumatic cylinder is propped against the second cylinder supporting groove and is used for pushing the second pneumatic cushion to lift.
7. The forming die of claim 4 or 7, wherein the first pneumatic cylinder is a nitrogen cylinder and the second pneumatic cylinder is a nitrogen cylinder.
8. A method of manufacturing a bogie side beam using the forming die according to any one of claims 1 to 7, comprising: Respectively mounting a lower die and an upper die in a forming die to a press machine, so that the lower die and the upper die are in an open state; Placing a bogie side beam plate into a first workpiece groove of a forming die; Starting a press machine, driving the upper die to move to the first protruding part of the upper die to be in contact with the side beam plate, and continuing to move downwards until the upper die and the lower die are matched to finish one-step forming; After one-time forming, the upper die is moved upwards to an open die state, and the side beam plate of the bogie formed at one time is turned up and down and then placed into a second workpiece groove of the forming die; And starting the press machine, driving the upper die to move to the second protruding part of the upper die to contact with the side beam plate, and continuing to move downwards to clamp the upper die and the lower die to finish secondary forming.
9. The method of manufacturing as set forth in claim 8, further comprising, after the primary forming, activating the first jack mechanism to jack the side rail plate to disengage the side rail plate from the first workpiece slot; After the secondary forming, the method further comprises the step of starting a second jacking mechanism to jack the side beam plates so that the side beam plates are separated from the second workpiece groove.
10. A bogie side beam manufactured by the forming die according to any one of claims 1 to 7 or by the method according to any one of claims 8 or 9.

Description

Forming die for bogie side beam, bogie side beam and manufacturing method Technical Field The application relates to a die manufacturing technology, in particular to a forming die of a bogie side beam, the bogie side beam and a manufacturing method. Background The bogie is an important part of the railway vehicle, is arranged below the vehicle body and is used for bearing the vehicle body and realizing the running and steering functions. The manufacturing process of the bogie frame comprises two processes of integral casting and steel plate welding, and for the steel plate welding process, the upper side beam plate, the lower side beam plate and the two side plates are correspondingly welded into a box structure. In the cold pressing operation of the bogie side beam plates, a kiloton hydraulic press is generally adopted, a special forming die is developed for each side beam plate, a steel plate is placed in the forming die, the forming die is mounted on the press, and after the die is closed, the press is used for applying pressure to enable the steel plate to bend and deform. The shape of the side beam plate of the bogie is complex, a plurality of bends exist, and a mold is required to be designed and manufactured in a targeted manner at each bending position. Each mold needs to be mounted on a press during the compression molding process. Because the size of the die is larger, the disassembly and assembly time is longer, the workload is larger, and time and labor are wasted. Therefore, in order to reduce the number of steps for replacing the mold, it is common to mount one mold on the press and then perform the first compression molding on the corresponding portions of the plurality of side rail plates in sequence. After the compression molding is completed, the mold is replaced, the secondary compression molding is performed on the batch of side beam plates, and the process is repeated for a plurality of times until all the side beam plates are completed. In this process, a plurality of side sill plates need to be stored near the press, taking up a large space. On one hand, a plurality of people are required to cooperate with the operations of placing, feeding, discharging, recording and the like, the efficiency is low, the difficulty is high, the production efficiency is low, the production period is long, and on the other hand, a plurality of side beam plates are stacked together, unqualified products are easy to mix, and the product quality is seriously affected. Disclosure of Invention In order to solve one of the technical defects, the embodiment of the application provides a forming die for a bogie side beam, the bogie side beam and a manufacturing method. According to a first aspect of an embodiment of the present application, there is provided a forming die for a bogie side beam, comprising: the side beam plate is provided with a side beam plate, a lower die, a first workpiece groove and a second workpiece groove, wherein the shape of the inner wall of the first workpiece groove is matched with the shape of the part of the side beam plate of the bogie, which needs to be bent for the first time; the upper die is provided with a first protruding part and a second protruding part, the surface shape of the first protruding part is matched with the inner wall of the first workpiece groove, and the surface shape of the second protruding part is matched with the inner wall of the second workpiece groove. According to a second aspect of the embodiment of the present application, there is provided a method of manufacturing a bogie side beam, comprising: Respectively mounting a lower die and an upper die in a forming die to a press machine, so that the lower die and the upper die are in an open state; Placing a bogie side beam plate into a first workpiece groove of a forming die; Starting a press machine, driving the upper die to move to the first protruding part of the upper die to be in contact with the side beam plate, and continuing to move downwards until the upper die and the lower die are matched to finish one-step forming; After one-time forming, the upper die is moved upwards to an open die state, and the side beam plate of the bogie formed at one time is turned up and down and then placed into a second workpiece groove of the forming die; And starting the press machine, driving the upper die to move to the second protruding part of the upper die to contact with the side beam plate, and continuing to move downwards to clamp the upper die and the lower die to finish secondary forming. According to a third aspect of the embodiment of the present application, there is provided a bogie side beam manufactured using the forming die as described above or manufactured using the method as described above. The technical scheme provided by the embodiment of the application is that a lower die is provided with a first workpiece groove and a second workpiece groove, the shape of the inner wall of the first wor