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CN-122007257-A - Bending die device for machining U-shaped forging

CN122007257ACN 122007257 ACN122007257 ACN 122007257ACN-122007257-A

Abstract

The invention discloses a bending die device for processing a U-shaped forging piece, which comprises a base, two groups of rollers, an auxiliary pressing plate, a reset rod, a reset spring and a bent upper punching piece for applying pressure to a semi-finished forging piece, wherein the rollers comprise roller main bodies which are connected with the base in a sliding manner and shaping pressing surfaces which are formed by extending obliquely upwards along the roller main bodies, the semi-finished forging piece is placed on the two groups of shaping pressing surfaces, the upper end of the auxiliary pressing plate is abutted to the bottom of the semi-finished forging piece, the lower end of the auxiliary pressing plate is fixedly connected with the roller main body, a limiting pin is arranged on the roller main body, and a limiting part matched with the limiting pin is arranged on the base.

Inventors

  • XU JUN

Assignees

  • 沙洲职业工学院

Dates

Publication Date
20260512
Application Date
20260324

Claims (7)

  1. 1. A bending die device for machining a U-shaped forging piece is used for finishing right-angle shaping of a semi-finished forging piece of about 45 degrees and is characterized by comprising a base, two groups of rollers arranged on the base in a rotating mode through a pin shaft, an auxiliary pressing plate arranged on the rollers, a reset rod arranged on the base and positioned on the outer side of the rollers, a reset spring arranged between the reset rod and the rollers and a bent upper punching piece used for applying pressure to the semi-finished forging piece, wherein the rollers comprise roller main bodies connected with the base in a sliding mode and shaping pressing surfaces formed by extending obliquely upwards along the roller main bodies, the semi-finished forging piece is placed on the two groups of shaping pressing surfaces, the upper ends of the auxiliary pressing plates are abutted to the bottoms of the semi-finished forging piece, the lower ends of the auxiliary pressing plates are fixedly connected with the roller main bodies, limiting pins are arranged on the roller main bodies, and limiting parts matched with the limiting pins are arranged on the base.
  2. 2. The bending die device for machining a U-shaped forging according to claim 1, wherein two sets of rolling grooves are formed in the base, and the roller bodies are slidably disposed in the rolling grooves.
  3. 3. A bending die apparatus for U-shaped forging in accordance with claim 2 wherein said rolling groove is of circular arc-shaped groove configuration.
  4. 4. The bending die device for machining a U-shaped forging according to claim 1, wherein two groups of connecting lugs are arranged on the base, and the roller body is rotatably arranged on the connecting lugs through a pin shaft.
  5. 5. The bending die apparatus for U-shaped forging in accordance with claim 4, wherein said connecting lugs are integrally formed with said base.
  6. 6. The bending die apparatus for U-shaped forging processing as recited in claim 4, wherein the stopper portion includes a sliding slope provided on the connecting lug and a stopper boss provided on a front end of the sliding slope.
  7. 7. The bending die device for machining a U-shaped forging piece according to claim 1, wherein a first hook is arranged at the top end of the reset rod, a second hook is arranged on the outer end face of the shaping holding surface, and two ends of the reset spring are respectively arranged on the first hook and the second hook.

Description

Bending die device for machining U-shaped forging Technical Field The invention relates to the technical field of die machining, in particular to a bending die device for machining a U-shaped forging piece. Background Under the ordinary forging process conditions, the forging stroke of the upper die and the lower die is longer, the upper die and the lower die cannot be bent completely in place due to the limitation of the stroke of the punching machine, and the demolding is insufficient, so that the problem that products are not formed in place is solved, the thickness of a forge piece can be different due to the influence of uneven temperature and pressure changes in forging, and the forging size and the U-shaped right angle cannot be ensured. Disclosure of Invention Aiming at the defects of the prior art, the invention provides the bending die device for processing the U-shaped forging piece, the spring reset rod and the limiting pin respectively realize reset and movement limiting of the device, the consistency and stability of each bending action are ensured, the forging piece can be secondarily molded to an ideal angle, the U-shaped forging piece is finally molded well, and the adjustment efficiency is greatly improved. In order to solve the technical problems, the technical scheme adopted by the invention is that the bending die device for processing the U-shaped forging piece is used for finishing right-angle shaping of a semi-finished forging piece of about 45 degrees, and comprises a base, two groups of rollers arranged on the base in a rotating mode through a pin shaft, an auxiliary pressing plate arranged on the rollers, a reset rod arranged on the base and positioned outside the rollers, a reset spring arranged between the reset rod and the rollers and a bent upper punching piece used for applying pressure to the semi-finished forging piece, wherein the rollers comprise roller bodies which are connected with the base in a sliding mode and shaping pressing surfaces which extend upwards obliquely along the roller bodies, the semi-finished forging piece is placed on the two groups of shaping pressing surfaces, the upper ends of the auxiliary pressing plates are abutted to the bottoms of the semi-finished forging piece, the lower ends of the auxiliary pressing plates are fixedly connected with the roller bodies, limiting pins are arranged on the roller bodies, and limiting parts matched with the limiting pins are arranged on the base. In a preferred embodiment of the present invention, the base is provided with two sets of rolling grooves, and the roller body is slidably disposed in the rolling grooves. In a preferred embodiment of the present invention, the rolling groove has a circular arc groove structure. In a preferred embodiment of the present invention, the base is provided with two sets of connection lugs, and the roller body is rotatably disposed on the connection lugs through a pin shaft. In a preferred embodiment of the present invention, the connecting lug and the base are integrally formed. In a preferred embodiment of the present invention, the limiting portion includes a sliding inclined surface disposed on the connecting lug and a limiting boss disposed at a front end of the sliding inclined surface. In a preferred embodiment of the present invention, a first hook is disposed at a top end of the reset lever, a second hook is disposed on an outer end surface of the shaping holding surface, and two ends of the reset spring are disposed on the first hook and the second hook respectively. The invention has the beneficial effects that the reset spring on the spring reset rod can realize reset of the roller after pressing, the limiting pin is matched with the limiting part on the connecting lug to realize movement limiting of the roller, consistency and stability of each bending action are ensured, the forge piece can be secondarily molded to an ideal angle, finally, the U-shaped forge piece is well molded, and right-angle molding precision of the U-shaped forge piece is ensured. Drawings For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein: FIG. 1 is a schematic view of a bending die apparatus for U-shaped forging processing according to the present invention after installation; Fig. 2 is a schematic diagram of a semi-finished forging after bending and shaping by the device. Detailed Description The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the prese