Patent ID: 8727357
Filing Date: 2014-05-20
Classification: B23B,F16B,Y10T

Abstract:
1. A toolholder support member for retaining a shank of a toolholder, wherein the toolholder support member comprises: a) a toolholder support member body; b) a receiving bore within the toolholder support member body, wherein the receiving bore has a width and extending along a longitudinal axis within the body, wherein the receiving bore has a receiving bore wall and is adapted to receive the shank of the toolholder; c) a primary retention system within the toolholder support member body for securely holding the shank of the toolholder with a resilient interference fit within the receiving bore; d) at least one secondary retention system within the toolholder support member body for retaining the toolholder shank within the receiving bore for use when the primary retention arrangement releases the shank from the toolholder, wherein each secondary retention system is comprised of: e) wherein the retention bore has a restriction in the region adjacent to the opening in the bore wall, such that the restriction engages and limits the travel of the retention member; and f) wherein the retention member and the biasing element interact to allow the retention member to resiliently protrude through the opening of the bore wall to a depth of less than ⅓