THCD Series-Head changeable drill-TOTIME

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THCD Series

High productive head-changeable drill Rear end locking Diameter:D12.5-D40mm L/D: 1/3/5/7/8/10/12

Features

◇ Precise, reliable and durable locking structure

◇ Different tips for processing various materials

◇ Excellent self-centering and chip breaking ability

◇ Customized drill is available

Inserts & Grades

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Drill bodies

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Srandard cutting conditions

RPG（Steel and cast iron series）

	Line speed(m/min)		Feed(mm/r)
	Minimum value	Maximun value	16.00 mm	20.00 mm	25.00 mm	32.00 mm	40.00 mm
Low carbon steel long chips Hardness(HB):<125	75	130	0.17-0.36	0.20-0.38	0.23-0.43	0.25-0.45	0.27-0.50
Low carbon steel short chips Hardness(HB):<220	80	140	0.17-0.36	0.20-0.38	0.23-0.43	0.25-0.45	0.27-0.50
Medium and high carbon alloy steel Hardness(HB):<330	60	90	0.17-0.30	0.20-0.32	0.23-0.37	0.25-0.40	0.27-0.42
Alloy steel and Tool steel Hardness(HB):350-450	50	85	0.14-0.30	0.17-0.32	0.20-0.37	0.22-0.40	0.23-0.42
Gray cast iron and low stength spheroidal graphite cast irons Hardness(HB):120-290	90	175	0.21-0.42	0.25-0.48	0.31-0.59	0.37-0.70	0.43-0.81
Low strength spheroidal graphite cast irons Hardness(HB):130-260	90	125	0.21-0.41	0.25-0.48	0.31-0.59	0.37-0.70	0.43-0.81
High strength spheroidal graphite cast irons Hardness(HB):180-350	40	125	0.20-0.41	0.21-0.44	0.23-0.48	0.25-0.53	0.27-0.57

RSG(Stainless Steel)

	Line speed(m/min)		Feed(mm/r)
	Minimum value	Maximun value	16.00 mm	20.00 mm	25.00 mm	32.00 mm	40.00 mm
Austenitic stainless steel Hardness(HB):130-200	15	70	0.10-0.20	0.12-0.23	0.12-0.25	0.14-0.27	0.15-0.30
High strength austenitic stainless steel Hardness(HB):150-230	40	60	0.08-0.15	0.10-0.20	0.12-0.22	0.14-0.25	0.15-0.26
Dual phase steel Hardness(HB):135-275	45	60	0.10-0.17	0.10-0.20	0.12-0.22	0.14-0.24	0.15-0.27

Practical examples

Workpiece material:Q345R

Part name : Heat exchange plate

	THCD	Competitor
Modular exchangable-tip drill insert	THCD2530RPG	D25.30 Similar structure
Diameter	25.30mm	25.30mm
Modular exchangable-tip drill	THCD250R8WT32M	D25x8D
VC(Line speed)	119m/min	91m/min
rpm(Rotating speed)	1500r/min	1150r/min
F(Feed per revolution)	0.27mm/r	0.24mm/r
Vf(Feed)	405mm/min	276mm/min
Hole depth	190mm	190mm
Number of drill holes	255	187

Workpiece material: stainless steel 316L

Part name : Heat exchange plate

	THCD	Competitor
Modular exchangable-tip drill insert	THCD1930RSG	D19.30 Similar structure
Diameter	19.30mm	19.30mm
Modular exchangable-tip dril!	THCD190R7WT25M	D19x7D
VC(Line speed)	60m/min	50m/min
rpm(Rotating speed)	1000r/min	850r/min
F(Feed per revolution)	0.14mm/r	0.11mm/r
Vf(Feed)	140mm/min	95mm/min
Hole depth	130mm	130mm
Number of drill holes	460	230