الآلات القاطعة .. الآلات التي نستخدمها كل يوم وكيف تؤدي عملها

Cutting Machines .. The Machines We Use Every Day and How They Work

Cutting Machines:

You have a lot of these cutting machines in your home, and they are made in different shapes and sizes. Some of them are designed specifically to cut wood, others to cut metals, and others to cut food, paper, hair and other materials.

We do not care much about the type of material that these machines cut, nor do we care about their different shapes. There is one or two ways in which these machines perform their different functions. These two methods are: cutting or shearing. Let us now study how we use these two methods.

We will start with cutting or slitting, because most cutting machines perform their function in this way. The cutting machine has a sharp edge or tooth. Its sides may be slanted.

For example, an axe is a cutting machine. The two pictures you see on this page show you an axe slitting a piece of wood. Then notice that there are actually two stages to this process. The first is when the sharp edge pushes through the wood, and then the slanted sides start to push the two parts of the piece of wood apart. All cutters work in the same way, pushing first, then pushing away. Now let's see many operations of this type.

The axe is like a wedge.
1 - The sharp edge pushes through the wood.
2 - Then the slanted sides split the wood, separating its parts.