CS231843B1 - Tool for production of helical shaped profile parts - Google Patents

Abstract

The tool consists of an extruder and a die, which consists of a body with a cylinder-shaped insert, in the surface of which a screw-shaped recess is made. The profile part is cold extruded through the die and given the desired shape.

Description

(54) Tool for the production of helical shaped sections

The tool consists of an die and a die. which is formed by a body with a liner in the shape of a cylinder, into whose screen a recess in the form of a helix is made. The profile part is extruded through the cold die and receives the desired shape.

FIG.5

231343

The invention provides a tool for the production of screw-shaped profile parts. The production of helical-shaped profile parts is still very costly. Known manufacturing methods are: machining by machining from solid material, which is very labor intensive and involves a large amount of material waste. Production on special single-purpose machines, which are very expensive.

Production by precision casting, which is economically unsuitable and capacities for this technology are limited. These drawbacks are overcome by the tool for producing these profile parts according to the invention, made of extruders and of a extruded body which is a cylinder-shaped insert with a screw-like recess in its housing. By using the tool according to the invention, the production of helical-shaped profile parts is considerably simplified, accelerated and cheaper compared to the production according to the classical methods mentioned above.

The accompanying drawings show a tool made according to the invention and one part produced thereon. Giant. Figures 1 and 2 show the produced part in front view and plan view, Figs. 3 and 4 show the front view of the tool before shaping into a helix in front view and plan view; In FIG.

is a tool consisting of die punches J. and die punches JJ. The extruders 11 form a body 11 with a cylinder 12 in the form of a cylinder. In the cylindrical wall of the insert 12 a recess 11 in the form of a helix is formed which corresponds to the profile of the part to be formed (FIGS. 3, 4) to be shaped.

In the upper part of the recess 11 there is an insert 11 which serves to prevent possible initial deformation of the formed profile 20 and its correct guidance into the extrusion 10. The extruder 11 is further provided with a guide 11 into which the molding parts 2J are inserted and an outlet opening 1b of the molded parts 30 (FIG. 1, 2).

The shaping procedure is as follows. The U-shaped section 20 to be shaped is inserted into the guide 11 and the die and pressed into the die. After pressing the part 20 into the die 10, a further part 20 is inserted into the guide 11, which is again pressed through the die 10 into the die 10, in which recess 13 the former 20 is formed into the desired helical shape and falls out of the die 10. It will be appreciated that the recess 13 may be provided instead of the cylindrical wall of the insert 12 into the cylindrical wall of the body 11.

THE FIELD OF THE INVENTION

Claims (3)

A tool for manufacturing helical-shaped profiled parts comprising an extruder and a extrusion die, characterized in that the extrusion die is a body (11) β with a cylinder-shaped insert (12), into which a screw-shaped recess (13) is provided. Tool according to claim 2, characterized in that the recess (13) in the form of a helix is provided in the body (11) of the die (10). 3 drawings