Application of spinning accessories in various metal spinning technology

Release time:

2025-01-09

The basic principle of metal spinning is similar to the ancient pottery production. The spinning parts are generally rotary cylindrical parts or saucer-shaped parts, and the half-finished are usually thick wall cylindrical parts or round sheets. The principle and structure of the spinning machine are similar to metal lathes.

The principle of spinning accessories is designed to have a rotating wheel frame with axial motion power at the position of the large drag plate of the lathe, and the rotating wheel fixed on the rotating wheel frame can be moved radially. A mandrel (shaft) is coaxial connected with the spindle, and the spinning blank is covered on the mandrel (shaft). The wheel rotates passively by friction generated by contact with the blank set on the mandrel (shaft). At the same time, the rotating wheel frame moves axially under the action of the axial large thrust cylinder.

Under the combined action of axial and radial forces, the rotating wheel frame carries out point-by-point continuous plastic deformation on the billet surface. At the position of the tail-top support of the lathe, a tail-top hydraulic cylinder is designed to have the same axis as the main shaft, and the hydraulic cylinder exerts axial thrust on the billet end face on the mandrel (shaft). The base material of the spinning accessories is aluminum alloy, the plate thickness is 2mm, aluminum is in a negative position in the electrochemical sequence, and he has an extremely high affinity for oxygen, these two factors cause the difficulty of aluminum and aluminum alloy in electroplating. After aluminum and aluminum alloy surface oxide film is removed in lye, a new oxide film is formed quickly when it encounters oxygen in the air, which seriously affects the binding force between the coating and the substrate.