Universally adaptable boregrinding chuck assembly
OwnerAlbert D. Rinchakinventor
Life of this patent
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Abstract
A boregrinding chuck assembly includes a plurality of arrow-shaped jaws that each includes a head that is in the shape of an isosceles triangle with the apex angle thereof just slightly less than 360.degree. divided by the total number of jaws in the assembly so that there is a small gap defined between adjacent jaws when such jaws are holding a workpiece in position for a boregrinding operation. Each jaw includes a set of marking lines that are located to define a workpiece-engaging circle that has a diameter just slightly smaller than the outer diameter of the workpiece to securely hold such workpiece when all of the jaws are engaged against the workpiece. The jaws are customized by cutting the heads along the marking lines that are appropriate to the particular workpiece.
Claims9
A boregrinding chuck assembly comprising:
- A) a boregrinding chuck for holding a tubular workpiece undergoing boregrinding;
- B) a plurality of workpiece-holding jaws mounted on said boregrinding chuck, each jaw including
- (1) a rectangular body having a distal end and a proximal end,
- (2) a triangular head attached to said body proximal end, said head being in the shape of an isosceles triangle with the base thereof attached to said body proximal end and having an apex angle of 50.degree. with the other two angles thereof each being 65.degree. so that an arc length between any two corresponding points on the equal length legs of said triangular shaped head is slightly less than the total outer circumference of said workpiece divided by the total number of jaws so that there is only a small gap defined between adjacent jaws when all of said jaws are engaged against the workpiece and the curve of said arc length essentially matches the curve of the workpiece whereby said arc length will fit essentially flush against the workpiece during a boregrinding operation, and
- (3) a guide means on said head for guiding a customizing operation of said head to fit a particular workpiece, said guide means including a plurality of arcuate lines on said head.
A boregrinding chuck assembly comprising:
- A) a boregrinding chuck for holding a tubular workpiece undergoing boregrinding;
- B) a plurality of workpiece-holding jaws mounted on said boregrinding chuck, each jaw including
- (1) a rectangular body having a distal end and a proximal end,
- (2) a triangular head attached to said body proximal end, said head being in the shape of an isosceles triangle with the base thereof attached to said body proximal end and being shaped and sized so that an arc length between any two corresponding points on the equal length legs of said triangular shaped head is slightly less than the total outer circumference of said workpiece divided by the total number of jaws so that there is only a small gap defined between adjacent jaws when all of said jaws are engaged against the workpiece and the curve of said arc length essentially matches the curve of the workpiece whereby said arc length will fit essentially flush against the workpiece during a boregrinding operation, and
- (3) guide means on said head for guiding a customizing operation of said head to fit a particular workpiece, said guide means including a plurality of arcuate lines on said head.
Dependencies are inferred from the claim text.