Drawing and processing apparatus

Abstract

A stretching processing device, used for carrying out excellent stretching process with a plurality of extruding rollers at high efficiency as a device for processing with work piece revolution; the stretching processing device (1) is composed of a main shaft mechanism (21) having a holding mechanism (21) disposed on fore end of the main shaft (22) and used for holding work piece W, and a tool installation mechanism (3) configured same as the main shaft mechanism (2). The tool installation mechanism (3) is composed of a cylindrical main body (30), a panel (31) disposed on sidewall of the main body (30), a plurality of roller installation floors (33) movably disposed on the panel (31) at right angle direction relative to axes (A) of the main shaft (22), cam plates (34) etched with helical grooves (34a) to be meshed with guiding pins (33a) protruding from the roller installation floors (33), and a rotary driving mechanism (36) for driving the cam plates (34) to rotate; with rotation of the cam plates (34), the roller installation floors (33) can move along right angle direction relative to axes A of the main shaft(22).

Description

technical field [0001] The present invention relates to a drawing processing device, and more particularly, to a drawing processing device that presses a squeeze roller against a workpiece mounted on a front end of a rotating spindle to perform drawing processing. Background technique [0002] Conventionally, as a drawing device for drawing a cylindrical member such as a pipe tip, there is a drawing device previously proposed by the present applicant. Thereby, drawing processing is performed on the front end of a fixed tube to be processed (hereinafter referred to as "work") (for example, refer to Patent Document 1). [0003] When the workpiece is fixed for deep drawing, although it has the advantage that the axis of the workpiece can be eccentric or inclined relative to the axis of the main shaft for deep drawing, it is necessary to arrange a squeeze roll mounting table, a squeeze roll, and a tool for use on the main shaft. Because of the helical grooved cam plate and the ...

AI Technical Summary

Problems solved by technology

[0012] In this drawing processing device, compared with the conventional drawing processing device in which the workpiece W is fixed, since the workpiece W is mounted on the spindle, the rotation speed of the workpiece W is increased, and the processing speed is increased. Therefore, there is a problem that the surface of the workpiece W needs to be plastically processed multiple times, and the overall processing speed becomes slower (the cycle becomes longer).

[0013] In order to deal with such a problem, although it is conceivable to arrange a plurality of squeeze rolls R facing each other in a direction perpendicular to the axis A, there is a need to arrange tool mounting mechanisms (in the illustration, a lifter) according to the number of squeeze rolls R Frame and right-angle direction movement mechanism), the installation space increases and the cost increases

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