Axial thrust collar
AssigneeSpieth-Maschinenelemente GmbH & Co. KG
InventorWerner Hund
Life of this patent
Estimating the term…
Abstract
A collar for axially clamping tools, spacers and the like on a shaft having a smooth portion and a threaded end portion includes an internally threaded attachment ring to fit on the threaded end of the shaft, an adjustment ring adjacent the members to be clamped and tightening screws threaded through the attachment ring and abutting the adjustment ring to axially urge the latter against the clamped members. The attachment and adjustment rings are interconnected by annular flexible connecting portions and an intermediate ring through which the screws freely pass. A second embodiment includes a second intermediate ring and additional connecting portion. A third embodiment includes an outer ring and clamping screws to urge the outer and attachment rings together to improve the grip of the collar on the threaded end of the shaft.
Claims3
A threaded collar for use with a cylindrical member having a smooth portion and a threaded end portion for axially clamping members carried by said smooth portion, said collar comprising
- a generally cylindrical body having an axial cylindrical bore therethrough and having inner and outer peripheral surfaces;
- means in said body for defining a radially inwardly extending annular groove and a radially outwardly extending groove,
- said grooves being axially spaced apart to define an attachment ring on said body, an intermediate ring between said grooves and an adjusting ring at an end of said body,
- said intermediate ring having an axial dimension which is significantly smaller than said attachment ring and said adjusting ring,
- said means including connecting portions at the inner and outer limits, respectively, of said inwardly and outwardly extending grooves interconnecting said rings,
- said adjusting ring having a distal end surface for contacting the members to be clamped and having a smooth peripheral surface facing the smooth portion of said cylindrical member dimensioned to axially pass the threads on the threaded end portion of said cylindrical member with clearance;
- substantially continuous thread means on the peripheral surface common to said attachment ring, said intermediate ring and the connecting portion therebetween for engaging the threaded end portion of said body;
- a plurality of screws having externally threaded portions;
- means in said attachment ring defining a plurality of internally threaded, circularly spaced, axially extending openings through said attachment ring for receiving said screws and engaging said threaded portions thereof;
- and
- means in said intermediate ring defining a plurality of openings axially aligned with said openings in said attachment ring for permitting passage therethrough of said screws,
- said screws being adjustable in said attachment ring to abut said adjusting ring and to elastically lengthen said body whereby adjustable axial clamping force can be exerted on the members carried by said cylindrical member.
Dependencies are inferred from the claim text.