A method of moulding a blank into a moulded component

摘要

A tubular blank (1) is shaped into a component (2) by pressing the inner surface of the tubular blank (1) over a mandrel (2) having an outer surface shape of the desired inner surface shape of the tubular component (2). Hydraulic pressure is used to supply the force to press the material onto the mandrel (7) to form the tubular component (2). This shaping method results in a moulded component (2) of high precision without requiring bond treatment. A groove is cut into an end surface of a shaft component to deform the shaft component into irregularities provided on the tubular component, thereby coupling the shaft component with the tubular component to form an outer ring for a constant velocity joint. This type of joint provides an outer ring having a strong coupling force and high coupling precision. The irregularities are preferably in the form of a spline cut in a portion of an inner perimeter surface of the tubular component, at a location where coupling of the tubular component with the shaft component is desired. The spline optionally includes a notch which provides additional coupling strength, especially in the shaft direction.