Thread rolling attachment
AssigneeC. J. Winter Machine Works
InventorRobert J. Brinkman
Life of this patent
Estimating the term…
Abstract
An outboard thread rolling attachment for an automatic screw machine for rolling a pattern on a workpiece comprising: a roll arm yoke; a pair of roll arms supported by the yoke end diametrically opposed to each other relative to the axis of rotation of a workpiece placed therebetween; each roll arm having a rotatable shaft with a thread roll positioned at the lower end of each shaft; fluid pressure means including a first cylinder element, a first piston element and a wedge element connected to the roll arm yoke and in contact with and operable on and between the inner end of the roll arm. The first piston element comprises a second movable cylinder element and a second piston element having adjustment means for adjusting the travel of the wedge element.
Claims10
An outboard thread rolling attachment for an automatic screw machine for rolling a pattern on a workpiece comprising:
- (a) a roll arm yoke having two, spaced, parallel arms, one of which is split into two sections,
- (b) a pair of roll arms pivotally supported intermediate their ends on a pair of spaced, generally parallel fulcrum pins which extend transversely between the arms of said yoke,
- (c) each of said roll arms having an inner end and an outer end,
- (d) each of said outer ends of said roll arms having a shaft rotatably mounted thereon,
- (e) a thread roll fixed on each of said shafts adjacent one end thereof,
- (f) said rolls being diametrically opposed to each other relative to the axis of rotation of a workpiece placed therebetween,
- (g) each of said shafts having gear means interconnecting one shaft with the other shaft,
- (h) a fluid pressure cylinder means including reciprocable piston means, and wedge means operatively connected to said piston means for reciprocation thereby, and being in contact with and operable on and between the inner ends of said roll arms,
- (i) said piston means including means for adjusting the travel of said wedge means,
- (k) means mounting opposite ends of said fulcrum pins in the arms of said yoke for limited universal movement relative thereto, and
- (l) taper adjusting means interconnecting said two sections of said one arm of said yoke and adjustable to tilt the axes of said fulcrum pins relative to one another.
Dependencies are inferred from the claim text.