A range of spindles are available for applications including contact lens turning, flycutting of optical components, mould grinding and ultra precision face grinding. Spindle designs are continually reviewed and updated to include the latest innovations in high precision technology.
They are manufactured to the highest standards of precision of all spindle types. They are also fitted with low noise motors and are dynamically balanced to within 0.001 gm cm to achieve motion errors as low as 0.05 um peak-peak. Bearing designs are also optimized to give maximum overall spindle stiffness in both radial and axial directions.
Spindles are available with foot mounted or plain cylindrical housings. Work or tool holding arrangements are manufactured to suit individual requirements and include air operated chucks, vacuum chucks and collets.
Smaller spindles within the range can reach speeds of 15 000 rpm with air cooling or 25 000 rpm with water cooling. These higher speed spindles are fitted with AC induction motors whilst spindles designed for lower speed machining applications are fitted with DC brushless motors. Encoders are used where accurate speed control or angular positioning is required.
Ultra precision spindles may also be integrated with air slides for applications requiring extreme positional accuracy.
Diamond turning spindles are all dynamically balanced to a very high accuracy and by incorporating low noise integral electric motors, supported by high stiffness air bearings, the driven shaft has no external influences. Diamond turning spindles can achieve T.I.R. as low as 0.05 microns and non synchronous motion running accuracies as low as 0.025 microns. Spindles are also suitable for diamond flycutting.
- Custom Designs are a feature of Loadpoint’s capability.
- Standard motors are of the AC induction type rated at 15,000 rev/min with air cooling or 25,000 rev/min with water cooling.
LoadPoint Air Bearing Spindle Properties:
- High Stiffness Bearings
- High Torque
- Wide Speed Range
- Runout <1 micron axially and radially
- Low Harmonics
- All rotating parts are balanced to gyroscopic levels.
- wide range of collet designs
- Significantly more accurate than the best rolling element bearings