THE BIRD-CAGE METHOD USED FOR MEASURING CYLINDRICITY. A PROBLEM OF OPTIMAL PROFILE MATCHING.
The bird-cage method used for measuring cylindricity is reported to be the most effective, as it pro- vides the most detailed information about an analyz ed ob- ject. The average values of profiles measured with the cross- section and the generatrix methods may differ sligh tly, yet this may result from some design imperfections of t he measurement instruments used. In this study, the pr oblem of optimal profile matching is formulated and solved. As a result, the differences between the values of the r egistered profiles at the points of intersection of the scann ing trajecto- ries can be minimized.
Design of a Test Stand for Rolling Bearing Durability Testing
The paper presents a design basis adopted for the construction of a test bench for rolling bearing durability testing. This article presents preliminary engineering requirements and the design of a special test rig for the examination of rolling bearings without the necessity of mounting the bearings in a specific machine component unit. The rig testing is widely used in consideration of numerous good points of such a method. The on test rigs consists in reproducing as accurately as possible the real conditions of operation of the bearings when mounted in the device for which they are intended. The device allows is capable of testing the running characteristics of bearings under varying test conditions and loads, speeds, lubrication conditions and temperatures. In addition they allow to test the service life under the set operating conditions.
Nietzsche's Task: An Interpretation of Beyond Good and Evil
When Nictzsche published Beyond Good and Evil in 1886, he told a friend that it was a book that would not be read properly until "around the year 2000". Now Laurence Lampert sets out to fulfill this prophecy by providing a section by section interpretation of this philosophical masterpiece that emphasises its unity and depth as a comprehensive new doctrine on nature and humanity. According to Lampert, Nietzsche begins with a critique of philosophy that is ultimately affirmative, because it shows how philosophy can arrive at a defensible ontological account of the way of all beings. Nietzsche next argues that a new post-Christian religion can arise out of the affirmation of the world disclosed to philosophy. Then, turning to the implications of the new ontology for morality and politics, Nietzsche argues that these can be reconstituted on the fundamental insights of the new philosophy. Nietzsche's comprehensive depiction of this anti-Platonic philosophy ends with a chapter on nobility, in which he contends that what can now be publicly celebrated as noble in our species are its highest achievements of mind and spirit.