Collet adaptor

摘要

A collet adaptor (10) including a body (11, 12) having forward and rear ends and an axial bore (17) extending through the forward and rear ends. A drawbar (13) disposed at least partly within the bore (17) for connection to a collet (14). The drawbar (13) is secured within the bore (17) and a biasing arrangement (42) acts on the drawbar (13) in a direction tending to shift the drawbar (13) rearwardly within the bore (17). The drawbar (13) is displaceable within the bore (17) against the biasing influence of the biasing arrangement (42) to shift forwardly within the bore (17).

主权项

1. A collet adaptor including a body, the body having forward and rear ends and an axial bore extending through the forward and rear ends, a drawbar disposed within the bore for connection to a collet, the bore being constructed so that the drawbar is insertable into the bore from the rear end of the bore and is retained within the bore after insertion by an annular retainer that secures the drawbar against release from the bore, the annular retainer and the body being connected by a threaded connection which extends coaxially with the axial bore, a forward end of the drawbar being for connection of a collet and the bore being constructed so that the collet can be inserted into the bore from the front end of the bore for connection with the forward end of the drawbar, a biasing arrangement within the bore acting on the drawbar in a direction tending to shift the drawbar rearwardly within the bore, an end of the drawbar extending out of the bore at the rear end of the body and the drawbar being displaceable within the bore against the biasing influence of the biasing arrangement by load applied to the drawbar end to shift forwardly within the bore.