Cutting speeds and conditions - Telcon Diamond Cutting Tools

Find the right working conditions for Telcon tools

Milling Cutting Conditions
Material	Cutting speed (m/min) for PCD or CVD End-Mills	Cutting speed (m/min) for Carbide End-Mills	Feed per tooth (mm) by Diameter
Material	Cutting speed (m/min) for PCD or CVD End-Mills	Cutting speed (m/min) for Carbide End-Mills	2 – 3	4 – 5	6 – 8	8 – 10	10 – 12
CFRP Unidirectional	150-200	100 – 150	0.015-0.02	0.02-0.025	0.025-0.03	0.03-0.035	0.035-0.04
CFRP Weave	100-150	70 – 120	0.01-0.015	0.015-0.02	0.02-0.025	0.025-0.03	0.03-0.035
GFRP	250 – 300	150 – 200	0.015-0.02	0.02-0.025	0.025-0.03	0.03-0.035	0.035-0.04
Aluminum-Si	200 – 300	120 – 170	0.015-0.02	0.02-0.025	0.025-0.03	0.03-0.035	0.035-0.04
Copper	200 – 300	150 – 200	0.015-0.02	0.02-0.025	0.025-0.03	0.03-0.035	0.035-0.04
Platinum, Paladium	80-100	50-70	0.01-0.015	0.015-0.02	0.02-0.025	0.025-0.03	0.03-0.035
SiC green stage***	35-45	NA	0.01-0.015	0.015-0.02	0.02-0.025	0.025-0.03	0.03-0.035
Tungsten Carbide green stage	50-60	NA	0.01-0.015	0.015-0.02	0.02-0.025	0.025-0.03	0.03-0.035
MMC: Al+SiC, Al+B2C	40-50	NA	0.008-0.012	0.012-0.016	0.016-0.02	0.02-0.025	0.025-0.03
CMC: SiC+SiC	25-35	NA	0.008-0.012	0.012-0.016	0.016-0.02	0.02-0.025	0.025-0.03
SiC, TC: Sintered	15-20	NA	0.005-0.008	0.006-0.01	0.01-0.015	0.012-0.018	0.015-0.02
Quartz	20-25	NA	0.005-0.008	0.006-0.01	0.01-0.015	0.012-0.018	0.015-0.02
Single Crystal Silicon	20-25	NA	0.005-0.008	0.006-0.01	0.01-0.015	0.012-0.018	0.015-0.02
* Conditions are for roughing (1xD depth of cut in Slotting or 0.5xD in side milling). For finishing, cutting speed can be increased up to 20% and feed can be adjusted according to desired surface finish and accuracy requirements.
** When part clamping on the jig is unstable, or tool extension is long, reduce RPM to avoid vibrations.
***When machining low Silicon content Aluminum, cutting speed can be doubled.
****For SiC and below materials, use PCD end mills only.

Material	Cutting speed (m/min) for PCD or CVD drills	Cutting speed (m/min) for carbide drills	Feed per revolution (mm), by Diameter
Material	Cutting speed (m/min) for PCD or CVD drills	Cutting speed (m/min) for carbide drills	2 -3	4 – 5	6 – 7	7 -8	8 – 10
CFRP Unidirectional	100 – 150	70 – 100	0.02-0.03	0.04-0.06	0.05-0.07	0.06-0.08	0.09-0.1
CFRP Bidirectional	80 – 120	60 – 80	0.01-0.02	0.015-0.025	0.02-0.03	0.03-0.04	0.04-0.05
CFRP/Al *	100-150	70 – 100	0.07-0.1	0.1-0.14	0.12-0.16	0.13-0.18	0.15-0.2
CFRP/Ti **	NA	50 – 70	0.02-0.03	0.04-0.06	0.05-0.07	0.06-0.08	0.09-0.1
GFRP	200 – 300	150 – 250	0.03 – 0.04	0.05-0.07	0.06-0.08	0.08-0.1	0.1-0.15
Aluminum-Si	200 – 300	150 – 250	0.07-0.1	0.1-0.14	0.12-0.16	0.13-0.18	0.15-0.2
Copper	200 – 300	150 – 200	0.05-0.08	0.08-0.12	0.1-0.13	0.12-0.16	0.13-0.18
Platinum, Paladium	80-100	50-70	0.05-0.08	0.08-0.12	0.1-0.13	0.12-0.16	0.13-0.18
SiC green stage***	35-45	NA	0.07-0.1	0.1-0.14	0.12-0.16	0.13-0.18	0.15-0.2
Tungsten Carbide green stage	50-60	NA	0.07-0.1	0.1-0.14	0.12-0.16	0.13-0.18	0.15-0.2
MMC: Al+SiC, Al+B2C	40-50	NA	0.01-0.02	0.015-0.025	0.02-0.03	0.03-0.04	0.04-0.05
CMC: SiC+SiC	25-35	NA	0.01-0.02	0.015-0.025	0.02-0.03	0.03-0.04	0.04-0.05
SiC, TC Sintered	15-20	NA	0.005-0.01	0.006-0.012	0.008-0.016	0.01-0.018	0.012-0.02
Quartz	20-25	NA	0.005-0.01	0.006-0.012	0.008-0.016	0.01-0.018	0.012-0.02
Single Crystal Silicon	20-25	NA	0.005-0.01	0.006-0.012	0.008-0.016	0.01-0.018	0.012-0.02
* If Aluminum is on exit, then on the Aluminum section only, pecking cycle of 50%D
** If Titanium is on exit, then on the Titanium section only, pecking cycle of 20%D
** When part clamping on the jig is unstable, or tool extension is long, reduce RPM to avoid vibrations.
***For materials SiC and below materials, use PCD drills only.

RPM =	Cutting speed (m/min) x 1000/π x Diameter (mm)

RPM =	Cutting speed (sfm) x 11.81/π x Diameter (inch)

Cutting Speed (m/min)=	RPM x π x Diameter (mm)/1000

Cutting Speed (SFM)=	RPM x π x Diameter (inch)/11.81

Table Feed (mm/min)=	RPM x Feed per revolution(mm)
1 IPM =	25.4 mm/min
1 SFM =	3.33 m/min

Telcon Diamond Ltd. is a world leading manufacturer of Diamond PCD and CVD cutting tools for the machining of composite materials: CFRP, GFRP, MMC, CMC and hard ceramics. TELCON produces a wide range of tools used by many of the world’s leaders in the field including Boeing, Airbus, Lockheed-Martin, Spirit, ATK, Embraer, Denel, ELBIT and IAI. Telcon’s tools include: PCD tipped Drills, CVD diamond drills, Carbide drills, PCD Countersinks, Carbide tipped Countersinks, PCD tipped End Mills and CVD diamond End Mills and Carbide End Mills.

TELCON possesses the most advanced Grinding, and EDM machines and state of the art Quality control equipment. TELCON’s vacuum brazing equipment is highly controlled to ensure repeatability and reproducibility of brazing operation. TELCON uses world class PCD and carbide grades and CVD coatings. In addition to tools manufacturing, Telcon operating reconditioning services for PCD and carbide tools.