Radial forging machine blank feeding length setting method

Abstract

The present invention discloses a blank feeding length setting method for a radial forging machine. The method can lead the radial forging machine to use only one deformation pass schedule in forgingprocess according to different blank lengths, and when blank length cannot be accurately calculated, the blank length can be worked out through the method. The method is to calculate the difference value of the current blank length and the blank length of the deformation pass schedule, to perform algebraic sum to the difference value and the offset of an operating machine relative to a hammer headcenter line of the deformation pass schedule, and then to endow the algebraic sum with the offset of the operating machine relative to the hammer head center line. When the blank length cannot be accurately calculated, the method of calculating the current blank length is to allow the end of a blank to be aligned with the edge of a hammer head, and then to subtract half of hammer head width valuefrom the acquiescent blank length of the radial forging machine so as to get the current blank length.

Description

technical field [0001] The invention relates to a production method of forging hot processing in the metallurgical industry, in particular to a method for setting the feeding length of a blank of a diameter forging machine. Background technique [0002] Metal forgings are products produced by thermal processing and deformation of presses. According to the different types of presses used, they can be divided into free forging forgings (or fast forging machines) and radial forgings forgings for radial forgings; according to different shapes of forgings, they can be Divided into round material, square material, flat material, shaft, cake, ring and other forgings. [0003] In the past, domestic shaft forgings have been produced by free forging with fast forging machines. Due to the influence of the precision of fast forging machines, the tolerance margin of forgings is relatively large. For one billet to produce multiple forgings, due to the length and diameter The increase in ...

AI Technical Summary

Problems solved by technology

But there will also be two problems: first, the program forging deformation pass of shaft parts is positioned according to the length of the blank, that is to say, there is a one-to-one correspondence between the deformation pass table and the length of the blank before the production of forgings

However, most of the blanks for the production of shafts are non-circular. Due to the limitation of the forging method, the shape and size of the blanks are uncertain, so it is difficult to accurately calculate the volume of the blanks theoretically, and it is also difficult to calculate the exact length. There is also no way to guarantee the accuracy of material retrieving. As a result, either the retrieving is short and the forging is scrapped, or the retrieving is too long to waste raw materials, and the yield is greatly reduced.

[0005] To sum up, in actual production, the production rate of shaft forgings produced by radial forging machines will be lower than that of fast forging machines, which seriously restricts the normal production of shaft forgings of radial forging machines