Tiny Tools
CMR General Recommendations
Coolant uid Dry machining should not be performed under any circumstances. It is necessary to use an internal coolant in all applications. Oil or emulsion lubricants are recommended for best performance. In the event of low coolant pressure, adding external coolant can improve tool operation. The cooling stream is designed to provide three bene ts: 1. Cooling the cutting edge of the tool and the contact area. 2. Pushing the chip away from the tool quickly, thereby reducing wear of the edge. 3. Helping to break the chip into smaller pieces and evacuating them from the cutting area.
Cutting Data
ISO Standard
Material
Cutting Speed m/min
Low and Medium Carbon Steels <0.55%C
20 - 75
P
High Carbon Steels ≥0.55%C
20 - 75
Alloy Steels, Treated Steels
20 - 60
Stainless Steels - Free Cutting
20 - 60
M
Stainless Steels - Austenitic
20 - 50
Cast Steels
20 - 70
K
Cast Iron
20 - 90
Aluminum ≤12% Si, Copper
40 - 150
N
Aluminum >12% Si
20 - 100
Synthetics, Duroplastics, Thermoplastics
40 - 150
S
Nickel Alloys, Titanium Alloys
15 - 60
H
60 - 70
Hardened Steels
Recommended Feed Rate: 0.01 - 0.03 mm/rev
CPR – Technical Section Internal pre-parting and chamfering are common operations on "small part machining" applications where a smooth and burr-free cut is needed. CPR tools create a pre-parting groove and chamfer. The operation should be completed with one of our standard parting-o inserts. A right or left-hand parting-o insert can be used with a leading from angle to minimize burrs.
54
Made with FlippingBook - Online Brochure Maker