Tools and dies facilitating accurate positioning of tools and their connection to retainers

Tool or die apparatus comprising a body forming a tool or die element including a working end, at least a portion of said body having its configuration defined by a line revolved about and in a generally parallel relationship to a central longitudinally extending axis of said body to provide for said body to be mounted with an interference fit in a bore of a retainer within which it must be held for working purposes, said portion of said body being intersected by a longitudinally extending groove the line of which is generally parallel to said axis, the configuration of said groove being such that the opening thereto at the outer limits of said body is formed by well defined generally parallel edge portions of said body which serve as guides to maintain a desired relation of said body with respect to said retainer as it is inserted with an interference fit in an accommodating bore of the retainer, and the extremity of said portion most remote from said working end including a generally radial projection through which said groove is extended and said radial projection by virtue of said groove providing means through the medium of which said body may be guided into its bore in a retainer to assume a position in said bore which is that precisely required, in a rotational sense.

Tool or die apparatus comprising a body forming a tool or die element including a working end, at least a portion of said body having its configuration defined by a line revolved about and in a generally parallel relationship to a central longitudinally extending axis of said body, said portion of said body being intersected by a longitudinally extending groove the line of which is generally parallel to said axis, said groove, in transverse section, having a configuration which is substantially the shape of a V, a retainer providing a first bore in which said portion of said body is inserted, said retainer having a second bore parallel to and in closely spaced relation to said first bore, a portion of said retainer intermediate said bores being displaceable to be accommodated in said V groove and provide for a predetermined fixed positioning of said body whereby to establish a required location and orientation of the working end of said body.

The combination of a tool, die or like element, a retainer providing a first bore for installation therein of said element, and a locator pin cooperable with said element for fixing the rotational position thereof in said retainer, said element having therein a recess in a portion of the body thereof, said retainer having a second bore receiving one end portion of said locator pin, said pin, in the application thereof, projecting from said second bore and said retainer and the projected portion thereof being arranged to act as a guide adapted to enter said recess in said element to direct said element into said first bore in said retainer in a selected position of rotational adjustment, and the projected portion of said locator pin being constructed and arranged to separate from said one end portion thereof upon said element being fully installed in said first bore.