Strategy for the production of deep holes using the solid carbide WTX deep hole drill
1. Producing the pilot hole
- For the pilot hole, we recommend a WTX drill 3xD/ 5xD with the same nominal diameter
- The pilot hole should be 0.01–0.03 mm larger in diameter and at least 3xD deep.
- From a hole depth of 40xD and 50xD, we recommend a pilot hole of 12xD with our WTX Quattro 4F.
2. Moving the deep hole drill into the pilot hole
- Move the WTX deep hole drill without coolant pressure and with reduced speed (n = 200–300 rpm) into the pilot hole at a feed of vf = 1000 mm/min
- Approx. 2 mm before reaching the bottom of the hole (end of the pilot hole), stop the feed, switch on the coolant and wait for a short time until the recommended pressure is reached
3. Drill to the desired hole depth, without chip removal cycle
- Reduce the feed by 50 % for transverse holes and when exiting the hole
4. Retracting the drill
- Retract the drill to around the depth of the pilot hole.
- Reduce the speed incrementally until a slower speed is reached (n = 200–300 rpm).
Buy deep hole drill
You might also be interested in this