Forming die forging forming method for annular forge piece with L-shaped section
Through the combined upsetting forming method of special punch, tire die and lower die, the problems of large tonnage equipment and heavy die are solved, and low-cost forming of L-shaped cross-section ring forging and easy-to-control tire die forging are realized.
Patent Information
- Application Number
- CN202311862398.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-07-01
AI Technical Summary
In the prior art, when forging L-shaped cross-section ring forgings with heavy weight and large projection surfaces, large tonnage equipment and weight-weight molds are required, resulting in an increase in production costs.
The combination of a special punch, a tire die and a lower die is used to forge the rectangular cross-section annular blank into an L-shaped cross-section annular forging, and the special punch is embedded into the lower die to form a cavity to achieve tire die forming.
The formation of L-shaped cross-section ring forgings on small tonnage equipment is realized, reducing mold weight and production costs, and improving the ease of forming control.
Smart Images
Figure CN120228221A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a method for die forging of annular forgings, in particular to a method for die forging of L-shaped cross-section annular forgings. Background Art
[0002] At present, L-shaped cross-section annular forgings are generally forged by die forging or ring rolling. Die forging is mainly used for forging small L-shaped cross-section annular forgings. For L-shaped cross-section annular forgings with heavy weight and large projection area, due to the large deformation force required for the forgings and the deep die cavity depth, the tonnage of the equipment required for forging the forgings is large. In order to ensure the forming of L-shaped cross-section annular forgings with heavy weight and large projection area, the ring rolling forming method is used for production. The machining allowance of the forgings is large and the weight of the die is heavy, resulting in an increase in the production cost of the forgings. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to provide a die forging method for forming L-shaped cross-section annular forgings without the need for large-tonnage equipment, which can meet the requirements of small forging equipment tonnage, easy forming control, and small die weight.
[0004] To solve the above technical problem, the die forging method for L-shaped cross-section annular forgings of the present invention first provides a die forging die for L-shaped cross-section annular forgings, including a special punch, a die and a lower die. First, place the die in the central position in the lower die, then heat the prepared rectangular cross-section annular blank to the required forging temperature and keep it warm for a certain time. Then place the rectangular cross-section annular blank between the lower die and the die, place the special punch on the upper end face of the rectangular cross-section annular blank, and control the special punch to move downward through a press to upset and form the rectangular cross-section annular blank until the special punch is completely embedded in the lower die and the upper end face of the special punch is completely flush with the upper end face of the lower die, completing the die forming process. At this time, the special punch, the die and the lower die jointly form the cavity of the L-shaped cross-section annular forging, realizing the die forming of the L-shaped cross-section annular forging.
[0005] The height H1 of the lower die cavity = the height H2 of the die = the height H3 of the special punch + the height H of the L-shaped cross-section annular forging. The thickness of the rectangular cross-section annular blank is D, and H3 = D to 2D.
[0006] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0007] The method for die forging forming of the L-shaped cross-section ring forging in the present invention is as follows. First, design the die forging forming die for the L-shaped cross-section ring forging. By using a special punch, a die and a lower die to cooperate for upsetting, the rectangular cross-section ring blank can be die forged into an L-shaped cross-section ring forging, which changes the traditional forging forming methods such as die forging or ring rolling of the L-shaped cross-section ring forging, and has the advantages of small tonnage of forging equipment, easy forming control, and small weight of the die. Brief Description of the Drawings
[0008] The present invention will be further described in detail below with reference to the drawings and specific embodiments.
[0009] Figure 1 is the longitudinal sectional view of the L-shaped cross-section ring forging.
[0010] Figure 2 is the schematic assembly diagram of the die forging forming die for the L-shaped cross-section ring forging in the present invention.
[0011] Figure 3 is the schematic diagram after the die forging forming of the L-shaped cross-section ring forging in the present invention. Detailed Embodiment
[0012] As Figure 1 shown, the L-shaped cross-section ring forging 100 is composed of a forging step portion 101 and a forging rod portion 102.
[0013] As Figure 2 and Figure 3 shown, the die forging forming die for the L-shaped cross-section ring forging in the present invention mainly consists of a special punch 201, a die 202 and a lower die 203; as Figure 2 shown, heat the prepared rectangular cross-section ring blank 200 to the required forging temperature and keep it warm for a certain time, place the rectangular cross-section ring blank 200 between the lower die 203 and the die 202, place the special punch 201 on the upper end face of the rectangular cross-section ring blank 200, and when the die is formed, the special punch 201 moves downward to upset and form the rectangular cross-section ring blank 200 until the special punch 201 is completely embedded in the lower die 203 and the upper end face of the special punch 201 is completely flush with the upper end face of the lower die 203. At this time, as Figure 3 shown, the special punch 201, the die 202 and the lower die 203 jointly form the cavity of the L-shaped cross-section ring forging 100, realizing the die forming of the L-shaped cross-section ring forging 100.
Claims
1. A die forging forming method for an L-shaped cross-section ring forging, characterized in that, First, a die for drop forging of an L-shaped cross-section ring forging is provided, including a special punch, a die and a lower die. First, place the die in the central position within the lower die, then heat the prepared rectangular cross-section ring blank to the required forging temperature and keep it warm for a certain period of time. Then, place the rectangular cross-section ring blank between the lower die and the die, place the special punch on the upper end face of the rectangular cross-section ring blank, and control the special punch to move downward through a press to upset and form the rectangular cross-section ring blank until the special punch is completely embedded in the lower die and the upper end face of the special punch is completely flush with the upper end face of the lower die, completing the die forming process. At this time, the special punch, the die and the lower die together form the cavity of the L-shaped cross-section ring forging, realizing the drop forging forming of the L-shaped cross-section ring forging.
2. The die forging forming method of the L-shaped cross-section annular forging according to claim 1, characterized in that, The height H1 of the cavity of the lower die = the height H2 of the die = the height H3 of the special punch + the height H of the L-shaped cross-section ring forging. The thickness of the rectangular cross-section ring blank is D, and H3 = D to 2D.