How many tools do you have and what tools do you like best? Whenever possible, we show tools here on the site, because knowing the tools well is part of training a good professional. In this article the World of Electrical presents another tool to facilitate the daily work of professionals in the World of Electrical, it is the automatic center punch.
Automatic center punch
Whenever you drill a hole, it is important to mark the point that will be drilled first, so that the drill does not slip. This is very important for the hole to be exactly where it was marked before.
A widely used feature for making markings before drilling a hole is a nail and hammer, but this is not always the best resource. The most correct and indicated way to make this marking is using a punch. We have two types of center punch, traditional and automatic.
To perform marking with a centerpunch, the procedure is similar to the nail and hammer feature. However, the center punch is made with more resistant materials and worked to support and facilitate the marking for the hole. To perform the marking with center punch it is necessary to position the tip of the punch in the marked location and hammer the punch to make the mark on the piece, that is, it needs both the punch and the hammer.
Automatic punching, you don’t need the hammer because the punch itself does all the work. Note in the image below that the tip of the automatic punch has a separation from the punch body. When the punch tip is pressed, there is a spring that keeps the punch tip firm.
The automatic punch has a mechanism that works next to the spring. When you push the tip of the punch against a part, the tip will sink to a point where the mechanism causes the tip to be pushed forward with great force, causing the tip to mark the part. It is precisely this mechanism that replaces the hammer strike.
Advantages of automatic punching
The fact that the automatic punch does not need to be hammered, helps to reduce the weight of a hammer in the toolbox and the marking in tighter places. But we know that the strength to make the marking varies according to the material to be marked. Depending on the material to be marked, it needs more or less force from the drive mechanism of the automatic punch and this can be regulated through thread adjustment.
Note in the image below that at the back of the punch there is a part that unscrews, it is as you unscrew the pressure of the punch spring decreases.
We will make three marking on a piece of wood using different settings of the thread of the automatic punch. The first marking using all the punch pressure, the second marking using the average punch pressure and the third marking using the low punch force.
You can see that each mark made on the wood has a different depth, precisely because the adjustment of the spring has been changed.
Knowing how to use the automatic punch setting is very important because, if you are going to punch a plastic part, for example, the punch needs less force than when you are going to punch a piece of metal or wood.
Having an automatic punch in the toolbox is very important to speed up the work, because the professional does not need to pick up the hammer every time he pits a hole, not to mention saving space in his toolbox.v