If you can diamond turn tungsten carbide using the Nanoform-XTC from Precitech, why would you grind it? Diamond turning provides several benefits that conventional grinding does not.
Diamond turning has feed rates of up to 6 mm per minute, which means that the finishing of standard components can take less than one minute. In addition to this diamond, turning allows established techniques to be followed for the rapid manufacturing of complex diffractive (kinoform) molds.
The Nanoform Xtc can produce surfaces with under 5 nm Sa and 150 nm PV, in addition, the technique also allows parts that require little post-polishing to be produced in minutes rather than the hours taken using traditional grinding methods.
Diamond turning has also been shown to be high-speed HS 75 Spindlee effective on infrared materials such as Silicon (Si), Germanium (Ge), Calcium Fluoride (CaF2), Zinc Sulfide (ZnSe) and Zinc Selenide (ZnSe).
Diamond turning on sapphire, glass (BK7) and Silicon Carbide (SiC) is currently in progress.
Key Specifications
| . |
. |
| Turning performance on tungsten carbide |
Surface roughness: < 5 nm Sa
Form accuracy: < 0.15 µm P-V |
| Programming resolution |
0.01 nm linear
0.0000001° rotary |
| Ultimate load capacity |
136 kg (300 lbs.) @ 100 PSI |
| Standard swing capacity |
250 mm dia. |
Technical Specifications
| Machine Base and Control |
Description |
| Machine Base |
Sealed natural granite base provides exceptional long term machine tool stability |
| Machine Type |
Ultra precision two, three, or four axis CNC contouring machine |
| Vibration Isolation |
FEA optimized dual sub-frames and integral self-leveling TMC MaxDamp® isolators (Optional PEPS® II-VX active vibration cancellation available) |
| Control System |
UPx™ Control System with optional Adaptive Control Technology |
| Operating System |
QNX real time operating system |
| Programming Resolution |
0.01 nm linear / 0.0000001° rotary |
| File Transfer/Storage |
USB, CD, Ethernet, On-board data storage backup |
| Turning Performance |
Surface Roughness < 5.0 nm Sa, Form Accuracy < 0 .15 µm P-V,
measured on a 10 mm dia., 15 mm convex sphere, tungsten carbine test part |
| |
| Linear Hydrostatic Slideways |
Description |
| Type |
Hydrostatic bearing slideways with symmetrical linear motor placement and liquid cooling |
| Travel |
X and Z: 220 mm (8.6 in.) |
| Maximum Feedrate |
4,500 mm/min. (177 in./min.) |
| Drive System |
Linear motor |
| Position Feedback Resolution |
8 pm (0.008 nm) |
| X-axis Straightness |
Horizontal (critical direction): 0.2 µm (8.0 µin.)
full travel 0.05 µm/25 mm (2.0 µin.) |
| Z-axis Straightness |
Horizontal (critical direction): 0.2 µm (8.0 micro in.)
full travel 0.05 µm/25 mm (2.0 µin.) |
| Vertical Straightness |
0.375 µm (15 µin.) full travel |
| Hydrostatic oil supply system |
Hydro-7 Smart Servo Control, low pulsation pump, optional thermal control |
| |
| Workholding/Positioning Spindle |
High Speed HS 75 Spindle |
High Performance HS 150 Spindle |
| Air Bearing Type |
Slot-type thrust bearing |
Slot-type thrust bearing |
| Material |
Steel shaft/Bronze journal |
Steel shaft/Bronze journal |
| Motor |
Integral brushless motor |
Integral brushless motor |
| Ultimate Load Capacity |
45 kg (100 lbs.) @100 PSI |
136 kg (300 lbs.) @100 PSI
204 kg (450 lbs.) @150 PSI |
| Axial Stiffness |
105 N/µm (600,000 lbs./in.) |
230 N/µm (1,314,000 lbs./in.) |
| Radial Stiffness |
35 N/µm (200,000 lbs./in.) |
130 N/µm (743,600 lbs./in.) |
| Motion Accuracy |
Axial/Radial ≤ 20 nm (0.8 µin.) |
Axial/Radial ≤ 15 nm (0.6 µin.) |
| Thermal Control Optional |
Liquid cooled chiller +/- 0.1 °C Accuracy |
Liquid cooled chiller +/- 0.1 °C Accuracy |
| C-axis Feedback Resolution |
0.018 arc-sec
9,000 line encoder |
0.010 arc-sec
16,200 line encoder |
| C-axis Position Accuracy |
+/- 1 arc-sec |
+/- 1 arc-sec |
| C-axis Max Speed |
4,000 RPM |
2,000 RPM
4,000 RPM with 9,000 line encoder |
| Work Holding Spindle Max speed |
18,000 RPM |
10,000 RPM |
|
| Facility Requirements |
|
| Power |
208 or 230 VAC - 3.0 KVA 1 phase - 50/60Hz for DT Machine
115 or 230 VAC – 1.5 KVA 1 phase 50/60 Hz for µ-LAM System |
| Air Supply |
Typical: 12 SCFM @ 100 PSIG |
| Machine Footprint (W x L x H) |
929 x 2152 x 1790 mm (36.6 x 84.8 x 70.5 in.) |