Automatic centering roller central frame device capable of ascending and descending

Abstract

The invention discloses an automatic centering roller central frame device capable of ascending and descending. The upper end of a lifting guide rod is connected with a lifting bottom plate, the middle of the lifting guide rod is fixed to a sliding bottom plate through a linear bearing in an interference fit manner, a guide rod locking device is fixed to the linear bearing, a locking bolt is arranged on the guide rod locking device, a roller bracket assembly is fixed to the lifting bottom plate, and is composed of two roller brackets and used for automatic centering, the locking bolt is arranged on a rotating support of the roller brackets, the rotating support is fixed to the lifting bottom plate, a hand shaking worm gear and worm drive assembly comprises a worm gear and worm speed reducer, a hand shaking wheel, a joint and a screw, and a sliding block is fixedly mounted at the bottom of a sliding bottom plate; the sliding block is arranged on a welding dedicated sliding rail, the sliding bottom plate slides on the welding dedicated sliding rail through the sliding block, and machining of shaft parts with the different lengths can be achieved. A sliding rail clamping device is fixed to the sliding bottom plate, and a locking wrench used for clamping or loosening the welding dedicated sliding rail is arranged on the sliding rail clamping device capable of being wrenched.

Description

technical field [0001] The invention relates to the technical field of mechanical devices, in particular to a liftable self-centering roller steady frame device. Background technique [0002] The special welding machine is mainly used for the automatic welding of the inner and outer longitudinal seams of the cylinder. It is mainly composed of a welding manipulator and a motor roller frame. Rack and beam driving parts), machine head and other components, with automatic control and manual control, its control precision is high, small in size, powerful in function, and can realize welding speed, welding torch lifting mechanism, welding torch position and welding parameters, Adjustment of process parameters such as welding current and arc voltage; the motor roller frame is composed of a set of manual machine-adjusted active roller frames, a set of manual machine-adjusted driven roller frames and a base. The rotation of the active roller frame is controlled by a frequency convert...

AI Technical Summary

Problems solved by technology

[0003] At present, when the special welding machine is welding shaft parts, it is necessary to use a center frame. The traditional method uses auxiliary tooling such as a V-shaped bracket and a roller center frame. When welding eccentric and other heterogeneous shaft parts, the traditional V-shaped bracket and a roller center frame It is very limited, especially when welding small batches of various parts in the aviation field, the shortcomings of the lack of flexibility of the traditional V-shaped bracket and the roller steady frame are very prominent

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