| 摘要 |
The invention relates to a device for adjusting the position of cutting tools (5) or end tools (6) in relation to the central axis (1) of the guide bush (2) of an automatic lathe. The device according to the invention essentially comprises a miniature CCD camera (3) which is equipped with an extension tube (4) containing a gradient-index lens (9) and an achromatic lens (10). According to the invention, the extension tube (4) is introduced into the guide bush (2) and is maintained in place by the workholder of the headstock (28) which clamps a fixing end piece (27) which is in turn fixed to the camera housing (18). Once introduced into the guide bush, the assembly can be used to obtain an image of the tool through the opening of the guide bush. The tool to be position-adjusted is illuminated by a set of light-emitting diodes (16). The image is transmitted to a computer via a cable (8). The computer program can be used to create a pattern on the screen in the form of Cartesian co-ordinates which are centred around the axis (1) of the guide bush, to acquire the position of the tool in the co-ordinate system, to compare same to the position thereof in the system of the machine and, subsequently, to adjust the position of the tool taking account of the differences between the co-ordinates of the two systems. |
