Rolling machine for forming a threading on a cylindrical body, and method for mutually synchronising forming rollers of a rolling machine

Abstract

The rolling machine for forming a threading on a cylindrical body, comprising two or more forming rollers (6), each provided with a threading (8) having at least one thread extending around its rotation axis (Z), and adapted to plastically deform a cylindrical body available along a central working axis (A) of the machine (1). The machine therefore comprises two or more actuator means (15) each provided with a movable head on which a corresponding forming roller (6) is mounted to move it along a respective first transverse axis (R) perpendicular to the working axis (A), and two or more sensormeans (30), each of which is fixedly mounted on the movable head to detect the distance of the thread profile of the corresponding forming roller (6) generating corresponding measurement signals. A logic control unit, in communication with the sensor means (30), receives measurement signals of the sensor means (30) and defines the relative position of the threads of the forming rollers (6).

Description

technical field [0001] According to the preambles of the independent claims, the invention relates to a rolling machine for forming threads on a cylinder and to a method of synchronizing the forming rollers of the rolling machine with each other. [0002] The rolling machine and method subject of the invention relate to the industrial field of precision machining with the aim of providing machining with high mechanical properties, especially in terms of toughness and strength, by cold plastic deformation. [0003] In particular, the machines and methods discussed herein are advantageously intended for application in obtaining threads of various types on metal cylinders, in particular cylinders made of steel, such as rods, shafts, rods, etc. Background technique [0004] Roller presses comprising two or more rollers mounted on a support structure, each of which is fitted with a wire cover, are currently commercially available. The cylinder to be processed is carried on the c...

AI Technical Summary

Problems solved by technology

[0027] Thus, the disadvantage of the method of synchronization used by known types of roller presses is that the accuracy of the synchronization is extremely dependent on the experience and competence of the operators, which is not conducive to the standardization of the quality of operation

A further, more serious disadvantage is the need to use many cylindrical samples to calibrate the forming rolls, which is very cost-intensive

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