Industrial Metrology

The subject of this book is surface metrology, in particular two major aspects: surface texture and roundness. It has taken a long time for manufacturing engineers and designers to realise the usefulness of these features in quality of conformance and quality of design. Unfortunately this awareness has come at a time when engineers versed in the use and specification of surfaces are at a premium. Traditionally surface metrology usage has been dictated by engineers who have served long and demanding apprenticeships, usually in parallel with studies leading to technician-level qualifications. Such people understood the processes and the achievable accuracies of machine tools, thereby enabling them to match production capability with design requirements. This synergy, has been made possible by the understanding of adherence to careful metrological procedures and a detailed knowledge of surface measuring instruments and their operation, in addition to wider inspection room techniques. With the demise in the UK of polytechnics and technical colleges, this source of skilled technicians has all but dried up. The shortfall has been made up of semi skilled craftsmen, or inexperienced graduates who cannot be expected to satisfy tradition al or new technology needs. Miniaturisation, for example, has had a pro found effect. Engineering parts are now routinely being made with nanometre surface texture and fiatness. At these molecular and atomic scales, the engineer has to be a physicist.

Quality assurance in aviation and space industry poses extraordinary challenges for measurement engineers. High standards for safety-critical parts must be maintained without reducing manufacturing speed and overall productivity. At the same time, the demands on the aerospace industry to develop aircraft that are as fuel-efficient and quiet as possible have increased enormously. And the aerospace industry wants to meet these requirements, whether in terms of noise emissions or fuel consumption. This is where industrial metrology with all its inspection capabilities, sensors and software solutions can make a valuable contribution. These possibilities are shown in this book. The demands placed on the aerospace industry are reinforced by strict regulations and approval processes – including additional specifications, traceability, conformity and certification standards. Be it EN/AS 9100, NadCap, test procedures according to AS 13003, 13006, EN/AS 9138 or others, the implementation of these procedures with coordinate measuring systems is part of this book.

Medical progress is associated with innovative product developments in medical technology, e.g. for different implants and instruments. The developments are also characterized by increasing miniaturization and precision. Hence the demands on the geometric and surface characteristics of the usually complex form elements are growing. Consequently, the need for highly-accurate dimensional inspection for the verification of these characteristics is rapidly increasing. ZEISS successfully and reliably faces these challenges. Being a leading manufacturer of medical technology as well as of measurement and inspection technology, the company ZEISS has a high level of know-how in the industrial production of medical devices and products. This book presents the metrological solutions for the medical technology and explains their application. The required measuring machines and the task-based sensors are addressed to the same extent as the challenges regarding automated 100 % checks. Methods for checking the reliability of measuring results and evaluating the inspection process quality are presented and the required procedures are described in detail. The extended regulations for medical devices and products, e.g. by FDA and MDR, place high demands on the measurement technology used and on the electronic documentation of measurement results. This is addressed in detail at the end of the book; in the appendix, easy-to-use checklists for the regulations according to 21 CFR Part 11 are provided.

The Newnes Know It All Series takes the best of what our authors have written to create hard-working desk references that will be an engineer's first port of call for key information, design techniques and rules of thumb. Guaranteed not to gather dust on a shelf! Field Application engineers need to master a wide area of topics to excel. The Test and Measurement Know It All covers every angle including Machine Vision and Inspection, Communications Testing, Compliance Testing, along with Automotive, Aerospace, and Defense testing. A 360-degree view from our best-selling authors Topics include the Technology of Test and Measurement, Measurement System Types, and Instrumentation for Test and Measurement The ultimate hard-working desk reference; all the essential information, techniques and tricks of the trade in one volume

Metrology is an integral part of the structure of today’s world: navigation and telecommunications require highly accurate time and frequency standards; human health and safety relies on authoritative measurements in diagnosis and treatment, as does food production and trade; global climate studies also depend on reliable and consistent data. Moreover, international trade practices increasingly require institutions to display demonstrated conformity to written standards and specifications. As such, having relevant and reliable results of measurements and tests in compliance with mutually recognised standards can be a technical, commercial and statutory necessity for a company. This book, the results of a working group from the French College of Metrology and featuring chapters written by a range of experts from a variety of European countries, gives a comprehensive and international treatment of the subject. Academics involved in metrology as well as people involved in the metrology capacities of companies and institutions will find this book of great interest.

Maximizing reader insights into the key scientific disciplines of Machine Tool Metrology, this text will prove useful for the industrial-practitioner and those interested in the operation of machine tools. Within this current level of industrial-content, this book incorporates significant usage of the existing published literature and valid information obtained from a wide-spectrum of manufacturers of plant, equipment and instrumentation before putting forward novel ideas and methodologies. Providing easy to understand bullet points and lucid descriptions of metrological and calibration subjects, this book aids reader understanding of the topics discussed whilst adding a voluminous-amount of footnotes utilised throughout all of the chapters, which adds some additional detail to the subject. Featuring an extensive amount of photographic-support, this book will serve as a key reference text for all those involved in the field.