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Schleicher Technic |
Other manufacturers |
Machine stability |
High
- Use of solid base supports with backlash-free profile rail guides
- Optimized machine design with low leverage forces
- Axis drives with high torque
- Low vibration
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Low
- No solid base supports (partly sheet metal construction)
- Use of shaft guides (deflection under load)
- Use of very small bearing and guide elements
- Construction leads to increased vibrations
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Precision and accuracy |
High
- Use of precision-machined base supports
- Preloaded recirculating ball screw drives
- High accuracy of the machine geometry (angularity, parallelism, flatness)
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Low
- No precision-machined base supports or sheet metal parts (flatness errors)
- Guide elements partially screwed directly onto sheet metal parts
- Design-related and incorrect machine geometry
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Rotary axis |
High precision and performance
- Precise Harmonic-Drive gearbox (backlash-free)
- High bearing rigidity due to preload of the bearing units
- High torques possible due to high reduction ratio
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Low precision and performance
- Partly without gearbox (mounting directly on motor shaft) leads to low rigidity and thus to deflections under load
- Low torques, as there is no gear reduction
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Engraving and milling spindle |
High precision and performance
- High concentricity
- Centrically clamping tool holder
- Speeds of up to 60,000 rpm possible
- High cutting speeds and feed rates can be realized
- High rigidity thanks to the use of large ceramic spindle bearings
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Low precision and performance
- Low concentricity due to non-centric clamping of the tool holder
- Low concentricity leads to high tool wear
- Speeds too low (<18,000 rpm) and therefore cutting speeds and feed rates too low
- Low spindle rigidity due to the use of very small spindle bearings (deflection)
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Tool life / durability |
Very high
- Due to the high precision of the milling spindle (concentricity) and high structural stability
- Optimum cutting data for the tools thanks to adjustable speed
- Tool cooling and lubrication available (VEROMILL)
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Low
- Due to low precision of the milling spindle (concentricity error)
- Due to low machine stability (vibrations)
- No optimum cutting data for the tools due to partially non-adjustable speed ranges
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Compensation of uneven workpiece surfaces |
Electronic
- Patented electronic height correction
- Automatic measurement of surfaces
- Optimum cutting depth (several individual cutting depths lead to the total engraving depth)
- No manual adjustment of the engraving depth necessary
- No readjustment necessary
- No scratches on surfaces (abrasive sleeve)
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Mechanical
- Mechanical engraving depth regulator
- Engraving depth must be set manually
- Re-adjustment of the depth cuts necessary
- High tool wear as the cutting depth is usually too high
- Scratches can occur on the workpiece surfaces due to the abrasive sleeve of the engraving depth regulator
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Machine housing |
Yes
- Modern and elegant machine housing with front lift door
- Very low noise emission
- Protection against dust and soiling of the machine elements provided
- Precious metals and chips collect in the machine and can be removed quickly and easily
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No
- High noise emission
- No protection against dust and dirt
- Precious metals and chips spread throughout the entire environment and have to be laboriously collected
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Clamping elements (jaw chuck, vice, clamping jaws) |
High precision
- Precise clamping elements with high repeat accuracy
- Precise workpiece zero points (e.g. ring centers)
- Stable and strong clamping thanks to innovative clamping jaw geometry (no shrink sleeves required)
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Low precision
- Low precision and repeat accuracy
- Ring centers are not approached precisely, among other things
- Shrink tubes required for 3-jaw chucks (quirks, slipping)
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