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TZ 200.02 Engineering drawing: casting



  • Two practice models for technical drawing of cast parts
  • From cast part to finished machine part


Technical Description

A bearing housing made from sand-cast aluminium is used in teaching as an example to illustrate the subject of cast parts in technical drawing in a detailed and practical way. TZ 200.02 comprises two elements: an unmachined cast part, professionally 'polished', as it is delivered from the foundry; and a post-machined cast part additionally presented in the form of a cutaway model. This enables the entire process, from the shaping to the cutting, to be covered in the lesson. Optimal learning is established when one model is used with two/three students.

Learning Objectives / Experiments

Technical drawing:
- drawings of cast parts and their special features: machining allowances, mould drafts, shrinkage, sectional views
- from the cast part to the finished part: production-oriented and standard dimensioning for subsequent machining
- manufacture of cast parts by the sand-casting method; manufacturing methods
- machine and tool selection, length measurement exercises
- machine elements and their function


[1] part of the GUNT technical drawing course
[2] graphical views: from cast part to finished machine part
[3] 2 models illustrating progress in the manufacturing process: 1 unmachined cast part, 1 cutaway model
[4] instructional material incorporates action-oriented and interdisciplinary forms of teaching

Dimensions and Weight
LxWxH: 100x100x125mm (each model)
Weight: approx. 3kg

Scope of Delivery
2 models, 1 set of instructional material

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