|
Question 2
|
(2) (a) Explain the term product layout.
(b) (i) List four operations which could be carried out on a jointer.
(ii) List four different machines used for sawing timber.
(c) Sketch the cross-section of each of the following saw blades:
- parallel plate saw;
- hollow ground saw.
|
_____________________________________________________________________________________________________ |
|
Very few candidates attempted this question.
Candidates were unable to:
- explain production layout;
- operations which could be carried out on a jointer
The expected response to the question is given below:
(a) Product layout is a system in which machines are laid in such a way that raw material is fed into the first machine and continues moving on, on the production line to the last machine as a completed product without having to move back and forth.
(b) (i) Four operations carried out on jointer:
* planing surface;
* shooting edge;
* rebating;
* bevelling;
* chamfering;
* squaring edges;
* tapering.
(ii) Four kinds of machines used for sawing timber are:
* circular rip saw;
* circular saw;
* band saw;
* radial arm saw;
* jig saw;
* dimension saw;
* cross-cut saw;
* precision saw .
(c) (i)
(ii)
|
|
|
|