Introduction

The present booklet contains 5 selected training examples which are intended to help practising and consolidating knowledge and skills acquired in the working technique knurling.

In order to facilitate the preparation and execution of the work, the necessary materials, working, measuring and testing tools and accessories are stated for each training example.

For the training examples 1, 4 and 5 the steel is specified according to the value of its tensile strength in the unit “Megapascal” (MPa).

We also recommend knowledge required in addition to knowledge of knurling which should be repeated before starting with the work.

Explanations to the working drawings are given before the specification of the technological sequence.

The specified sequence of operations for the individual training examples gives the steps necessary for the production of the parts. This sequence of operations should be strictly observed if good quality is to be achieved.

For each training example a working drawing is attached showing the required shapes and dimensions of the workpiece.

It is also possible to select other parts with greater or smaller dimensional variations.

The admissible deviations for sizes with no indication of tolerances may be taken from the table below.