|Chiping - Course: Technique for Manual Working of Materials. Methodical Guide for Instructors|
In order to guarantee a trouble-free development of the instructions, exercises and practical work it is necessary to prepare this training properly.
The following steps have to be taken:
2.1. Preparations for instructions on labour safety
Prior to the exercises the trainees have to be given a brief instruction on the proper use of tools and equipment. This comprises also hints for accident-free work.
The following points should be emphasized:
- Use proper hammers and chisels only!
- Chisel heads must be free from burrs!
- Protect your hands from accidents by providing the chisel with an impact guard (cover)!
- Wear safety goggles to protect your eyes from injuries!
- Enclose your workplace in the direction of impacts by means of protective gratings or protective screens.
Familiarity with these hints has to be confirmed by the trainees' signatures in a control book.
2.2. Provision of teaching aids
- For demonstration purposes during the instructions a vice should be installed at the place of instruction.
- The "Trainees' Handbook of Lessons - Chipping" is to be handed out to the trainees in sufficient numbers.
- When using the transparencies series of "Chipping", check whether they are complete (transparencies nos. 10.1 - 10.5.) and whether the overhead projector is in working order. (Check the operating conditions at the place of instruction and make sure of the proper mains supply!)
- Surveys etc. which have to be written on the blackboard roust be completed prior to the instruction.
- All the tools and accessories for chipping mentioned in section 3 should be kept ready for illustration purposes.
2.3. Provision of working tools and materials
- Sufficient copies of the "Instruction Examples for Practical Vocational Training - Chipping" must be handed out to the trainees to provide them with the theoretical foundations for the exercises to be carried out.
- The initial materials required for the exercises must be prepared and laid out in sufficient numbers on the basis of materials mentioned in the "Instruction Examples...".
- Each trainee is to be provided with a workbench at which a vice, the required steel supports and good lighting are available.
- The instructor has to check whether the workbenches of the trainees are fully equipped with tools and accessories necessary for the planned exercises.
Recommended basic equipment:
- steel rule, protractor, depth gauge, vernier caliper
- steel scriber, prick-punch, double-point punch
- hammer, hand hacksaw
- flat chisel, cape chisel, half-round grooving chisel, mortise chisel
- bastard and smooth files - 300 mm (flat)
Bench- or column-type drilling machines and the required clamping tools (machine vice, holding clamps, C-clamps) roust be provided for the necessary preliminary work (drilling) in some of the exercises.
Based on the regulations on labour safety, the instructor has to check that the drilling machines are in good working order prior to the exercises..
2.4. Time schedule
Time planning is recommended for the following training stages
- introduction to the working techniques in the form of instructions
- necessary demonstrations
- job-related instructions to prepare the exercises
- carrying out the exercises
- recapitulations and tests.
The necessary time share depends on the respective training conditions. The biggest time share must be allocated to the exercises.