BASE MATERIALS Handbook of Machining with Grinding Wheels

10.4.1 Introduction In many cases, mineral oils are used as the base material for cooling lubricants. Mineral oil bases consist of hydrocarbons with mostly paraffinic, naphthenic, or aromatic structures. Depending on the fraction of the paraffins, naphthenes, and condiments, a distinction can be made between paraffin-based, naphthene-based, and mixed base oils [Mang 1983, Moller and Read more

Grinding of Ductile Materials Handbook of Machining with Grinding Wheels

13.1 INTRODUCTION 13.1.1 Grindability Workpiece material composition and condition control all aspects of the grinding process. As ever greater demands are placed on productivity and quality, it becomes critical that the engineer understands the metallurgy of the materials being ground and their impact on the grinding process. Grindability is the term used to describe the Read more

ELEMENTS OF AC SERVODRIVE BALLSCREW SYSTEMS 15.8.1 The Ballscrew Handbook of Machining with Grinding Wheels

A ballscrew (or recirculating ball leadscrew) is at the heart of a controlled linear-motion system. It is a precision-ground hardened steel or stainless steel threaded shaft on which a ballnut rides with rolling contact to provide a positive, high efficiency of transmission and low friction. The ballscrew is manufactured by turning, heat treating, and then Read more

THE WORKREST Handbook of Machining with Grinding Wheels

The support surface of a workrest should be harder than the workpiece. The workrest also has to be tough and capable of withstanding the knocks encountered on the factory floor. The wear-resistant surface of the workrest is selected according to the types of work material ground. For steels, tungsten carbide inserts provide a suitable surface. Read more