Machine type selection:
Single coordinate series CNC deep hole drilling machine: it is suitable for machining rotary parts. When the cutter rotates, the workpiece can also be fixed. The machining of eccentric hole and inclined hole can be completed by adding lateral moving fixture and dividing head.
Three coordinate series CNC deep hole drilling machine: it is suitable for processing special-shaped parts, the workpiece is fixed on the workbench, and the cutter is rotated and fed.
Processing method selection:
The selection of machining method is mainly based on the requirements of drilling diameter, accuracy and efficiency.
Gun drilling method (external chip removal method): the drilling diameter is Φ 1.5 - Φ 40m m, the surface roughness is ra0.4-ra3.2 μ m (general material), the efficiency is higher than that of twist drill, and lower than that of BTA method.
BTA method (internal chip removal method): drilling diameter ≥ Φ 16m m, surface roughness ra1.6-ra6.3 μ m (general material), efficiency 1.5-4 times higher than gun drilling method.
Processing efficiency requirements:
If the machining efficiency is high, multi head can be selected, which can greatly improve the efficiency.
