Modeling and Distribution Laws of Drilling Force for Staggered Teeth BTA Deep Hole Drill

Table 3

Comparison of predicted values with experimental values of cutting and burnishing force.

Test No.	Teeth cutting force						Guide pads burnishing force
	/N			/(N·m)			/N			/(N·m)
	Pred	Exp	Error (%)	Pred	Exp	Error (%)	Pred	Exp	Error (%)	Pred	Exp	Error (%)
2	500.9	525.8	-4.74	3.335	3.174	5.07	43.62	48.37	-9.82	1.598	1.491	7.18
4	805.2	834.7	-3.53	5.359	5.711	-6.16	70.25	67.45	4.15	2.569	2.317	10.8
5	1147.2	1043.6	9.93	7.633	7.296	4.62	99.34	106.60	-6.81	3.657	3.714	-1.53