Machine tool metrology book available for download

Lion Precision has announced that 'Know Your Machine Tool' by Tim Sheridan can be downloaded for free from its website.

The book was first released in 1991 and shows practical, step-by-step processes for measurements of spindle error motions according to the ANSI B89 standard (Axes of Rotation, Methods of Specifying and Testing).

Spindle error motions on machine tools are responsible for errors in feature location, feature roundness and surface finish.

In disk drives, spindle error motions limit data density.

The maximum speed of high-speed drills is limited in part by spindle error motions.

Precision spindle and machine tool manufacturers and users now utilise these methods to test and characterise their machines in order to predict their behaviour and capabilities.

Jim Bryan, a retired scientist from Lawrence Livermore National Laboratory, in his foreword to the book, said: 'Tim Sheridan has done an excellent job presenting the relevant material in a well-organised, well-written, honest, and understandable form.

'He must have worked very hard to reduce the mass of technical papers, engineering standards, product instruction manuals, and his personal experience to a document that can be read in a few hours.' 'Know Your Machine Tool' has been superseded by 'Precision Spindle Metrology' by Eric Marsh PhD, which is available at Amazon or can be purchased from Lion Precision.

Lion Precision is the manufacturer of the Spindle Error Analyser software and high-performance capacitive sensors used around the world for machine tool measurements.

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