Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1980-09-18
1983-12-13
Whitehead, Harold D.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
B24B 1300
Patent
active
044198469
ABSTRACT:
Apparatus for producing convex and/or concave spherical surfaces such as optical lenses, comprising a workpiece spindle having an end face to which a workpiece to be machined is securable and a tool spindle carrying a tool for machining the workpiece, the two spindles being disposed at an angle to one another, and a mechanism for retaining the tool spindle in its angular position relative to the workpiece spindle including two mutually adjustable members,
the first of said members being mounted so as to be pivotable about a primary axis which is tangential to the apex of the spherical surface to be produced and which axis is formed on a frame for the apparatus, the first member being adjustably locatable at a pre-selected angle of inclination commensurate with the radius of the spherical surface to be machined,
the second of said members having the tool spindle directly mounted thereon and being mounted about a secondary axis on the first member such that the axes of mounting of the two members extend substantially parallel to one another but are spaced apart by a distance corresponding substantially to the longitudinal dimension of the first member, and the second member being pivotable about the secondary mounting axis and locatable at an angular position with respect to a line joining the two axes, such angular location being selected in dependence on the effective diameter of the machining tool.
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Reiche Horst
Schimitzek Gunter
Rose Robert A.
Whitehead Harold D.
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