1. Thread milling
Double-ended thread mills are very similar to single-ended thread mills in both use and appearance. Single-ended thread mills are more versatile than multi-ended thread mills because they are not limited to a fixed pitch. Double-ended mills with a 60°angle are capable of machining internal and external imperial and metric threads. Thread mills with a 55° angle can be used to machine 55° British Standard Pipe Threads (BSPT).
2. Chamfering
Depending on your chamfering requirements and the angle of the chamfer you create on the part, thread milling is a process that can be done. The angle of the top or bottom of the tool will determine the angle of the part chamfer. Chamfering and back chamfering (leaving a chamfer on the bottom of the part) are the cutting parts of the operation.
3. Back chamfering
Consider a through hole that has burrs or tears due to drilling from the back of the workpiece. Repositioning the workpiece and repositioning the hole is time-consuming and cumbersome, making it difficult to accurately complete the hole processing. In this case, back chamfering the burred hole without changing the processing position is a preferred method. Simply put, being able to accurately chamfer the top and bottom of the part without re-fixturing the workpiece on the machine will save time and improve efficiency.
When chamfering, for the best results, the method of reducing the feed amount and increasing the number of passes is adopted, and the number of passes is reduced as the radial cut amount increases. This method helps to control the feed amount and can significantly avoid tool deflection.
4. Processing V-grooves
Thread milling cutters are often used to process V-groove profiles because their cutter heads are perpendicular to the tool centerline. This provides efficient processing even at low spindle speeds.
5. Deburring
Manual deburring can be exhausting and inefficient for your business. It can also lead to inaccuracies in parts that require precise dimensions. Thread milling cutters can be used to deburr directly on CNC machines. By doing so, the process of finishing the part becomes simple, fast, and accurate. Of course, it is critical to ensure proper clearance before machining the bottom of the hole.
6. Countersinking
Countersinking a part is done so that the screw, nail or bolt can be flush with the surface of the part. Using a thread mill can help expand the edge of the drilled hole and bevel the sides so that the screw can be accurately placed.
