| 摘要 |
The object of the invention: a four-die forging device for forging presses. Field of application: metal deforming, it can be used at forging ingots and billets of various steels and alloys on forging presses including the hydraulic forging presses. Essence of invention: the novelty is that holders of lateral dies in longitudinal section have a shape similar to the shape of a truncated pyramid with the center of mass of "lateral die holder - lateral die" system, which does not extend beyond the longitudinal section of lateral die holder. Centering guides are installed or on the lateral sides of die holders in number not less than four, or on inclined planes of die holders in the longitudinal plane of symmetry of the device in number not less than two or on the sides and inclined planes of die holders in the longitudinal plane of symmetry of the device in number not less than six. The internal planes of centering guides envelop the planes of adjacent die holders or parts rigidly attached on the die holders, to form a lock joint. At the bottom of the inclined plane of each holder of lateral die there are protrusions, against which the antifriction plates rest. The working surface of each die, in cross section, comprises a central working area and two lateral areas. The maximum width of the working surface of the die (b) and length of sliding surface of anti-friction plate (1) are related as b/l≤1.5. Effect: increased service life of the device without repair, its reliability, performance of forging process and quality of obtained forgings. |
