NTK Cutting Tools

Pure Copper Processing Solutions

For turning small parts | UC1 and Y axis holder + High-pressure coolant

Optimized for Pure Copper – Diamond-Coated Inserts & Y-Axis Machining
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NTK's Work Changing Concept

Diamond-coated carbide : Longer tool life with UC1 Improved chip control with Y-axis tool holder + high-pressure coolant
Performance
  • High purity, high hardness diamond coating, and excellent adhesion performance enable long-term stable machining
  • Improved chip control by applying Y-axis direction machining with high-pressure coolant
Tooling application

Pure copper (C1020/C1100) machined using Sliding head automatic lathes or CNC-lathes

 

Diamond-coated carbide:UC1
〔 Machining Property of C1100 Tough Pitch Copper 〕

Diamond-coated carbide: UC1 with excellent wear resistance & welding resistance is recommended because tooling tends to wear and the machined surface deteriorates due to welding, resulting in short tool life.
A good machined surface can be obtained by applying the appropriate cutting condition (low cutting depth/low feed) which reduces the chip thickness.

Case study
Battery connector
Material
C1100 φ10-20 φ.394 -.787 in.
Speed
(m/min) (SFM)
55 – 110 180 – 360
Feed
(mm/rev) (IPR)
0.03 .0012
DOC
(mm) (inch)
0.2 .008
Coolant
WET
UC1 DCMT11T302 DCMT32.508 FNAM3
1000 pcs / corner
PVD super coat DCGT11T302 DCMT32.508 molded chipbreaker
50 pcs / corner
Electrode part
Material
C1100 φ12 φ.472 in.
Speed
  (m/min) (SFM)
80 262
Feed
  (mm/rev) (IPR)
0.05 .002
DOC
(mm) (inch)
1.0 .040
Coolant
WET
UC1 DCMT11T301 DCMT32.504 FNAM3
2000 pcs / corner
PVD super coat DCGT11T301 DCMT32.504 molded chipbreaker
100 pcs / corner
Machined Surface Comparison

[ Cutting conditions ]
Part material : C1100 vc= 80m/min ap=1.0mm 260 SFM ap=.040  WET

[ Tools used ]
DCMT11T302FNAM3 DCMT32.508FNAM3  UC1

If the cutting conditions cause the chips to become thick (high cutting depth or high feed) then the machined surface will deteriorate due to chip clogging.

Cutting conditions
- - - Scroll the table - - -
Grade Tool Operation Machining Speed (m/min) Speed (SFM) Feed (mm/rev) Feed (IPR) DOC (mm) DOC (inch) WET
UC1 Tough pitch copper C1100 Turning Rough – Finish 50 – 150 160 – 500 0.02 – 0.05 .0008 – .002 0.2 – 2.0 .008 – .080

Using the cutting conditions shown, chips can be segmented and controlled with AM3 chipbreaker.
When machining at large depths of cut and high feed rate, select CL or ZP chipbreakers to suppress chip clogging.

〔 Machining Properties of C1020 Oxygen-free Copper 〕

Stable chip generation may be difficult with a chip breaker alone, it is recommended to add a Y-axis holder + high pressure coolant

Cutting conditions
- - - Scroll the table - - -
Grade Tool Operation Machining Speed (m/min) Speed (SFM) Feed (mm/rev) Feed (IPR) DOC (mm) DOC (inch) WET
UC1 TM4 Oxygen-free copper C1020 Turning Rough – Finish 50 – 150 160 – 500 0.02 – 0.20 .0008 – .008 0.5 – 3.0 .020 – .118

Refer to content above to select cutting conditions and chip breaker to obtain good chip control.
If you want longer tool life than PVD Carbide: TM4, use Diamond-Coated Carbide: UC1.

〔 Boring 〕

Improve chip control by using FG/F1 chip breakers to evacuates chips backwards and high-pressure coolant

Cutting conditions
- - - Scroll the table - - -
Grade Tool Operation Machining Speed (m/min) Speed (SFM) Feed (mm/rev) Feed (IPR) DOC (mm) DOC (inch) WET
UC1 TM4 C1100 C1020 Turning Finish 50 – 150 160 – 500 0.02 – 0.05 .0008 – .002 0.1 – 0.5 .004 – .020

If you want longer tool life than PVD Carbide: TM4, use Diamond-Coated Carbide: UC1.

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