When manufacturing products that are most likely going to be attached to other objects, the manufacturers leave spaces or holes where they expect to place screws or bolts through them. In case the holes are not there, someone can create some for himself or herself and the holes are referred to as countersink, and the cutting tools used to create them are called countersunk cutting tools.
These holes are the spaces where the screw or bolt will lie so that the surface will sit flush, and not have unsightly protrusions on or below the surface. Another function of the countersink includes its use as a finish after a drilling job, or as a smoother of edges that might cause accidents.
Some of the countersink cutting tools includes:
• The cross hole countersink cutter
• The fluted countersink cutter
• The back countersink and
• The form countersink
1. The cross-hole countersink cutter has the shape of a cone, which cuts using the sharp outline of the hole found on the top part of the cone. Therefore, the cutting part of the tool is where you find the intersection of the cone with the hole. The cutting tool is not a perfect cone since it retreats from the edge that is used for cutting as it rotates. This inequality leads to the cutting edge sinking in the direction of the material being cut, as opposed to the edge lacking clearance. The cross-hole countersink cutter can be used in materials such as wood, plastic or even harder substances.
2. The fluted countersink cutter provides a heavy edge connection between the surfaces being joined. The cutter ensures that the finish will be smooth. The head screw gives the opportunity for another operation of a machine such that, there are several angles that the cutter has with the most common angle being 82 degrees.
3. The back countersink also goes by the name-inserted countersink since it makes use of the two countersink pieces. The tool is used for pieces of work that require inserting in a hole that is existing, and to act as a back boring or back debarring. The advantage in using this tool is that it gives the user ease of cleaning, reclamping and flipping over, as opposed to frustrating them and reducing their setup time. For a user looking to have a high level of parallelism and concentricity in their first setting up, then using this tool is essential.
4. The form countersinking is also referred to as dimpling. This countersinking is used in metals when the owner is intending to increase the structural strength of a number of pieces attached to each other. There are two ways of coming up with the countersinking and they include modified radius dimpling, and the coin dimpling.
The expertise of the finish and the proper use of the countersink cutting tools to produce a countersink leave behind a surface that has many appealing qualities. The smooth, flush finish ensures that there are no chances of accidents and the aesthetic appeal.
