The choice of tool holder plays a vital role in machining accuracy, efficiency and stability. BT knife handles and BBT knife handles both get a lot of attention, but there are some significant differences between them.
The BT toolholder adopts a single-sided lamination design, which is relatively insufficient in rigidity and stability, and can meet the needs of most conventional processing. However, it may be slightly insufficient when facing some high-precision, high-load processing tasks.
The BBT toolholder adopts a double-sided lamination design, which is more suitable for high-precision processing scenarios. First, its clamping force is stronger, which can better fix the tool and reduce vibration and offset during processing;
Secondly, the BBT toolholder has higher rigidity and can withstand greater cutting force, making the processing process more stable and reliable;
Furthermore, the BBT toolholder has better precision retention. Its double-sided lamination design effectively reduces the spindle expansion and poor precision caused by the toolholder during high-speed cutting. Even after long-term use and multiple clamping, it can still maintain high precision, reducing the scrap rate caused by the decrease in toolholder precision.
In general, BT toolholders are suitable for general processing needs; BBT toolholders are more suitable for high-precision processing scenarios with higher requirements for precision, rigidity and stability.