Apparatus for testing the accuracy of machine tools and measuring devices
First Claim
1. An apparatus for testing an accuracy of machine tools and measuring devices, comprisinga support made of granite, anda plurality of reference elements made of titanium or a titanium alloy having a thermal expansion coefficient matching a thermal expansion coefficient of the granite, wherein the reference elements are glued on a top of the support and onto at least one side surface of the support and have an interior surface in form of a circular cylinder or an interior surface with a polygon-shaped cross-section,wherein a subset of the reference elements is arranged on imaginary longitudinal lines or transverse lines, or both, which form a grid pattern on at least the top of the support, and wherein at least one of the reference elements disposed on the top of the support is arranged with an offset from the grid pattern formed by the at least one imaginary longitudinal and transverse line.
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Accused Products
Abstract
An apparatus for testing the accuracy of machine tools and measuring devices has a support and at least one reference element formed as a sleeve, wherein the reference element is glued on top of the support.
26 Citations
7 Claims
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1. An apparatus for testing an accuracy of machine tools and measuring devices, comprising
a support made of granite, and a plurality of reference elements made of titanium or a titanium alloy having a thermal expansion coefficient matching a thermal expansion coefficient of the granite, wherein the reference elements are glued on a top of the support and onto at least one side surface of the support and have an interior surface in form of a circular cylinder or an interior surface with a polygon-shaped cross-section, wherein a subset of the reference elements is arranged on imaginary longitudinal lines or transverse lines, or both, which form a grid pattern on at least the top of the support, and wherein at least one of the reference elements disposed on the top of the support is arranged with an offset from the grid pattern formed by the at least one imaginary longitudinal and transverse line.
Specification