A three-roll cross-rolling device for forming stepped shafts

Abstract

The invention discloses a three-roll cross-rolling device for forming a stepped shaft, which comprises a frame and three rolls, and a roll rotation drive mechanism for driving the rolls to rotate is fixedly arranged on the frame, and is characterized in that an intermediate frame is fixedly arranged on the frame There are three roller adjustment mechanisms that are independent of each other and correspond to the rolls one by one on the middle frame. The roll adjustment mechanism is used to adjust the deflection angle of the roll and the radial distance relative to the rolling piece. The advantage is that the three-roller cross-rolling device can adjust the deflection angle of the rolls, and can also adjust the radial distance between the rolls and the rolled piece, and can roll out stepped shafts and straight shafts of different specifications. Its versatility Better; and the roll adjustment mechanism can be used to adjust the deflection angle of the roll and the radial distance relative to the rolled piece, and its structure is compact. More importantly, the roll adjustment mechanism ensures the stability and reliability of the adjustment of the roll deflection angle, thereby The surface forming quality of the rolled piece is guaranteed.

Description

technical field [0001] The invention relates to the rolling technology of shafts, in particular to a three-roll cross-rolling device for forming stepped shafts. Background technique [0002] Cross-rolling refers to the rolling that the rolled piece rotates, deforms, and advances along its own axis between two or three rolls with the same rotation direction and intersecting (or inclined) longitudinal axes. Among them, the three-roll cross-rolling technology is widely used, which is mainly used for rolling forming of hollow long shaft parts. When rolling, the three rolls of the three-roll skew rolling mill are required to: (1) rotate at the same time, synchronously, and in the same direction; (2) deflection angles relative to the rolling axis must be consistent to ensure the rolling force during rolling And the surface forming quality of the rolled piece. However, the deflection angle of the rolls of the current three-roll skew rolling mill and many radial positions along th...

AI Technical Summary

Problems solved by technology

However, the deflection angle of the rolls of the current three-roll skew rolling mill and many radial positions along the rolled piece cannot be adjusted, which makes the versatility of the three-roll skew rolling mill poor, and it cannot roll stepped shafts, and basically Processing one type of rolled piece; in order to improve the versatility of the skew rolling mill, some three-roll skew rolling mills are equipped with a deflection adjustment mechanism and a radial movement mechanism for the rolls, but the structure is complex and takes up a lot of equipment space. poor stability and reliability

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