Rotary tool positioner
AssigneeMolins Machine Company, Inc.
InventorRobert E. Coburn
Life of this patent
Estimating the term…
Abstract
The tool positioner of a slitter scorer has tool engaging elements which are at least in part cylindrical and coaxial with a piston connected thereto. The cylindrical portion and piston are each independently guided by stationary guide surfaces in order to minimize bending forces on the piston.
Claims7
In a tool positioner for use in a slitter scorer, the improvement comprising a housing supported by said tool positioner, a cylindrical bearing within said housing, a cylindrical plunger coaxial with and guided by said bearing, the axial length of said plunger being greater than its diameter, said plunger having a pin at one end thereof, a piston coaxial with said plunger and spaced from said one end of said plunger, a piston rod having one end connected to said piston and its other end connected to said one end of said plunger, a stationary cylindrical guide in said housing for guiding said piston, and means for introducing a pressurized fluid to one face of said piston for causing said piston to move in a first direction to a position wherein said plunger pin projects out of said housing to an operative position for contact with a tool.
A tool positioner comprising a carriage, a pair of guide tubes guiding said carriage, a lead screw drive connected to said carriage for reciprocating said carriage along said tubes, said carriage having a pair of arms generally perpendicular to the direction of reciprocation of said carriage, a pair of shafts straddled by said arms, a plurality of sets of mating tools on said shafts, each arm having a discrete tool engaging member associated with each shaft, the tool engaging members associated with each shaft being operable in unison, each tool engaging member including a cylindrical plunger having a pin at one end thereof, means associated with each plunger for reciprocating each plunger in an axial direction toward and away from the longitudinal axis of its associated shaft, each of said means including a piston coaxial with its associated plunger and connected to its associated plunger, each piston having a diameter which is different from the diameter of its associated plunger, a discrete stationary cylindrical guide member coaxial with each plunger and piston, and said means including a discrete fluid connection for introducing fluid to one face of each piston for moving its piston and plunger in a direction towards its associated shaft.
A positioner for axially moving a circular rotary tool on a shaft comprising a carriage, means for guiding said carriage parallel to the axis of the shaft, drive means for reciprocating said carriage, support means extending from said carriage a distance beyond the axis of the shaft, a tool engaging means on said support means, said tool engaging means being supported by said support means for reciprocation in a direction perpendicular to the axis of the shaft, said support means having a discrete stationary guide surface for guiding said tool engaging means, a cylinder and a discrete piston coaxial therewith for urging said tool engaging means toward the axis of the shaft into engagement with a tool, one face of said piston being connected to said tool engaging means, means for introducing a pressurized fluid into said cylinder against the opposite face of said piston, and means for mounting said cylinder in said support means coaxial with said tool engaging means, the outer surface of said cylinder and the inner surface of said tool engaging means defining a cylindrical space therebetween whereby said piston is independent of forces applied perpendicular to said tool engaging means.
Dependencies are inferred from the claim text.