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close this bookStraightening - Course: Technique of Working Sheet Metals, Pipes and Sections. Methodical Guide for Instructors
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View the document1. Aims and Contents of Practical Vocational Training in the Techniques of Straightening
View the document2. Organizational Preparations
View the document3. Recommendations for Implementing Practical Vocational Training in Straightening Techniques

2. Organizational Preparations

To ensure a trouble-free course of instructions, exercises and vocational practice, it is necessary to prepare the training well, with the following measures to be taken:

2.1. Planning the Training in Straightening Techniques

Starting from the total hour volume, the hours spent on the individual training sections of this vocational unit should be planned in a differentiated manner. For the following training sections it is recommendable to prepare a schedule:

- for the introduction to the techniques in the form of an instruction,
- for required demonstration,
- for the task-related instruction in preparation of the exercises,
- for the implementation of the exercises,
- for recapitulation and controls.

In planning the time, the following additional factors are to be taken into consideration:

- the level of education of the trainees,
- the training conditions,
- the future field of working of the trainees,
- the degree of difficulty of the training sections.

The acquisition of skills and abilities is the focal point of each training section; therefore, the exercises must be given the major portion of time.

2.2. Preparing the Instructions on Labour Safety

Before beginning with the exercises, a brief instruction has to be given on the appropriate use of tools and equipment and on accident-free working. In general, the same regulations are valid as for hammering and bending.

The following points must be especially emphasized:

- Use only clean and intact tools and equipment.

- When using hammers, make sure that the head of the hammer is firmly connected with the shaft by the cotter punch.

- Choose the appropriate support - it must have an inflexible surface.

- The workpieces must be firmly clamped so that they are not torn away by the hammer blows.

- When working at presses make sure that your hands and head are protected.

- The use of welding torches is only allowed after previous instructions given by the instructor.

- Pay attention to fire protection: place water ready for fire fighting; do not work near inflammable materials.

Knowledge of these instructions has to be confirmed by the trainees by signature in the control book.

2.3. Providing the Teaching Aids

- The "Trainees' Handbook of Lessons - Straightening" is to be distributed among the trainees according to their number.

- Especially indicative illustrations from the "Trainees' Handbook of Lessons" should be arranged for as blackboard drawings.

- Workpieces which have been deformed by transport or machining may be used as visual aids.

- Special tools not yet know to the trainees, e.g. moving irons, may be used as visual aids, too.

- If in the field of straightening transparencies for overhead projection are available, they should be included in the lessons.

2.4. Providing the Working Means

- As a theoretical basis of the exercises to be carried out the "Instruction Examples for Practical Vocational Training - Straightening" should be distributed among the trainees.

- The basic material required for the exercises should be prepared and provided in sufficient quantity according to the details given in the "Instruction Examples...".

- The workshop has to be checked as to its complete equipment with tools, devices, measuring and testing instruments as well as auxiliary means according to the exercises planned.

- Recommended basic equipment

· Locksmith's hammers, straightening hammers, light metal hammers, mallets, rubber hammers

· Moving irons and tap wrenches

· Tongs and damps

· Welding torches with accessories

· Hand screw presses

· Vice, straightening plate

- Straightening machines that shall be used for mechanical straightening must be checked as to their serviceability with regard to safety before starting the exercises.