Cylindrical part forward spinning pressing ring rotating along with spinning roller

Abstract

Disclosed is a cylindrical part forward spinning pressing ring rotating along with a spinning roller. One end of a spinning roller mandrel is a pressing ring mounting section, the other end of the spinning roller mandrel is a spinning roller seat matching section, and the spinning roller mandrel is connected with a spinning roller seat of a spinning machine via the spinning roller seat matching section. A radially protruded positioning cam is disposed at a joint of the spinning roller mounting section and the spinning roller seat matching section. A pressing ring is sleeved on the pressing ring mounting section, and a baffle is fixed to the pressing ring and an end surface of the spinning roller mandrel by a baffle screw. The spinning roller is sleeved on the spinning roller mounting section and fixed onto an end surface of the positioning boss on the spinning roller mandrel. The spinning roller mandrel, the spinning roller, the pressing ring and the baffle are driven by a spinning roller seat feeding mechanism to be in axial feeding movement jointly along a straight line. Initial gaps among pressing rings with different pass reductions and outer surfaces of blanks are guaranteed only by means of replacing the pressing rings with different outer diameters, flare openings are avoided, effective forming sections of spinning parts are increased, and the purpose of increasing material utilization rate is achieved. In addition, the cylindrical part forward spinning pressing ring has the advantages of simple structure, easiness in manufacture and processing and convenience in replacement.

Description

technical field [0001] The invention belongs to the field of spinning processing, in particular to a forward spinning pressure ring of a cylindrical part rotating with a spinning wheel. Background technique [0002] Forward spinning of cylindrical parts is a continuous local plastic forming method for forming high-precision thin-walled cylindrical parts. It has the characteristics of small spinning force, high production efficiency and low labor intensity. In the forward spinning process of cylindrical parts, one end of the cylindrical blank is fixed to the mandrel by the clamping device and the axis of the cylindrical blank coincides with the axis of the mandrel, and the active rotation of the mandrel drives the synchronous rotation of the billet and the mandrel. The rotary wheel makes a linear feed motion to the other end of the cylindrical blank along the axial direction of the mandrel, so that the thickness of the cylindrical blank is reduced and the length is elongated ...

AI Technical Summary

Problems solved by technology

[0004] At present, in the prior art, in addition to reserving a certain machining allowance at the tail end of the blank and processing it with a machine after spinning, the processing method for the bell mouth produced at the end of the forward spinning of the cylindrical part is In addition to the cutting method, there is also a multi-pass shrinking spinning process to shrink and eliminate the bell mouth at the end of the workpiece after the spinning is completed, but this multi-pass shrinking process will greatly extend the production cycle. Low working efficiency, and when shrinking the bell mouth at the tail end of the workpiece, the material at the tail end is prone to instability, and in severe cases, it will wrinkle or break

In summary, the existing technology has not yet proposed a method that can effectively and specifically suppress the positive spinning of the tail end of the cylindrical part.

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