Radial work on a metalworking lathe, such as the cutting of gearwheels or the drilling of holes on a set radius, calls for a method of precisely spacing the cuts. This skill is known as Dividing. The principles underlying this aspect of engineering are explained in depth in this book. It covers the subject of Dividing, dealing with the many methods that can be adopted: from simple applications without specialised equipment to the use of a semi-universal dividing head and a rotary table. The mathematical aspects of dividing are also covered but at a level that will be understood easily by a model engineer.
● An Introduction to Dividing
● The Machinery
● The Methods
● The Mathematics
● Holes on a Pitch Circle Diameter
● Shop-Made Simple Dividing Devices
● Shop-Made Basic Dividing Head
● Shop-Made Full Function Dividing Head
● Shop-Made Lining Tool
● Prime Numbers
Dividing equipment is relatively expensive, so two fully-detailed designs are included for dividing heads: a basic unit and the equivalent of a commercial semi-universal head.