| 摘要 |
<p>A method is provided for centring semi-finished parts which are to undergo mechanical machining, including the steps of preparing a centring device including three centring elements spaced apart angularly at a regular pitch, capable of coming into contact with the semi-finished part to move it into a centred position, each of the centring elements being movable along a preset radial direction (Y), the radial directions intersecting at geometrical axis (X) for centring the part. The method further provides for the steps of moving each centring element along the corresponding radial direction (Y), with controlled and independent movement of each centring element relative to the others, by a respective drive associated with a respective apparatus for transmitting the motion capable of converting the rotational motion of each drive into translational motion of the corresponding centring element, and of adjusting the position of each centring element as a function of the torque developed by the respective drive, until a condition of centring is reached in which all the torque forces developed by the drives of the corresponding centring elements are greater than or equal to a preset threshold value indicating that a desired centring position of the part relative to the geometrical axis (X) of the centring device has been reached. A centring device operating according to the above-mentioned method is also described.</p> |
