A drill press is one of the best instruments to drill holes. Despite the fact that it’s just a simple machine that can easily be put to use without any manual, it at times requires some procedure to maneuver and get best results. It drills holes with the exact measurements as desired by the user when used correctly. Modernized drill presses are either ran electrically, fixed or stationery and attached to a working bench. In this article, I would wish to impact us with knowledge on how a drill press works.
Debarring a Hole
A hole will often block due to burrs which settle at the bottom of the hole. A drill press can be used to deburr a blocked hole. This is done by inserting the drill press into the hole and then run it in spiral movements about the edges of the hole by using relative amount of pressure. Doing this repeatedly will eventually give you awesome results of clean and clear holes.
Drilling a Hole
While drilling a hole, a centre drill is used. A centre drill usually has short flutes and thick shaft thus making it quite stiff. If the required hole is too wide, it’s advisable to drill pilot holes thus making the hole more accurate and rounder. A coolant can be used in case the hole becomes deeper that it is wide. The speed at which the spindle is moved is reduced proportionally when stepping the drill size up. When drilling a through hole ensure the bits doesn’t drill the table as well after the hole is through. To ensure you get the desired depth of the hole, one should use a drill depth stopper found on the quill. While using a portable drill press, ensure it’s firmly fixed to a sturdy and that it’s firmly attached to the shaft to give straight holes.
Reaming a Hole
The accuracy of a drilled hole is usually limited to a certain length. Due to this factor, to achieve more precision, a reamer can be used. The reamer can only be used when the hole has already been drilled. Therefore, you will be required to first drill the hole to a certain undersize level and then continue using the reamer. The reamer will give perfect results while passed down in a slow constant speed.
Tapping a Hole
While cutting threads into a hole a tap is used. A tap has edges which usually straightens flutes. It also cut threads in order to allow expulsion of the chips. They have a slightly tapered end in order to allow the tap in. It’s advisable to be cautious while working with the tap and dies since the two are hard and brittle. The size of the hole should be a determinant on the size of the tap to be used. This is in order to ensure that the tap easily fits into the hole without breaking.
For the above-mentioned functioning of the drill press, the operator is required to follow the following steps for the drill to work just perfect.
Set the speed: This is done by adjusting the drive belt from one pulley to the other. It’s advisable to maintain low speed in order to enhance better drilling on metals while fast speed is encouraged while drilling wood.
Fitting the Bit: This is done by opening the chuck and then slide the bit in, then snug the chuck using your hand around the shaft of the bit. Tighten the chuck’s jaws with the key.
Gauge the Depth: Lower the bit to the required height then adjust the knurled nuts on the gauge to the right point. One of them should lock the first nut place and the other stops the spindle.
Drilling process: Ensure that the drill is rotating at the highest speed possible, and then present the bits to the workpiece. Lower the bit by swinging the spinning lever. Once you are done drilling the hole as desired, release the lever and its spring-loaded return mechanism returns to its original position.
Above procedure works best alongside the drill press manual. This is because drill press varies from one to the other. Their functionality also differs from one material to the other as well as the shape of the hole being drilled varies depending on the functions.