DOLittle - lathe
A new convincing concept!
- Highest precision for smallest turning parts
- Space-saving and compact design
- Optionally with opposed spindle
- Optionally with Y-axis
- Lowest setting-up times by external setting
- Driven tools with speed up to 18.000 rpm
- Spindle speed up to 15.000 rpm
Due to its design, this lathe is ideally suited for maximum precision with small to very small component dimensions. The flexible modular system offers a wide variety of machine variants in very compact installation space, all of which are characterized by an extremely low thermal cycle.
In addition to its precision, the innovative tool concept is designed for easy handling, external tool measurement, and the shortest possible set-up times. The turning machines are accommodated in tool blocks with five positions each. Via a specially developed interface, these blocks can be installed and removed within a few seconds, guaranteeing a changeover accuracy of < 0.01 mm. Outside the lathe, the new tools are inserted, measured and the coolant supply lines are adapted to the respective tool positions. Ideally, this is done while the CNC lathe is still processing the current job. A wide range of turning spindles with radial and axial run-out are available.
All variants of the DOLittle series can be automated either by Benzinger's own loading and unloading devices with the shortest possible workpiece change times or by separate robot cells. The addition of a bar feeder also enables complete machining from the bar.State-of-the-art controls from Siemens and Fanuc with various programming options complete the overall package.
Version B1, B2, B3, B5 and B6
Version - B1 - Turning machine
Version - B2 - Turning machine
Version - B3 - Turning machine
The DOLittle B3 lathe is equipped with a main spindle and a counter spindle to enable the complete machining of workpieces. Due to its design, the counter spindle inside the turning machine can be moved in three directions (X / Y / Z) to transfer the workpiece to the main spindle. Precise form and position tolerances from the first to the second workpiece side can thus be reliably maintained. The innovative tool blocks in combination with the Y-axis and the six-axis milling device with NC swivel axis enable the machining of complex and high-precision components.
Version - B5 - Turning machine
This makes the DOLittle B5 CNC-lathe a highly productive solution for machining repeat parts.
Version - B6 - Turning machine
The DOLittle B6 variant combines the advantages of the DOLittle design with the productivity of simultaneous machining.
The separate arrangement of the slide units at the smallest possible distance makes it possible to keep the machine's heat cycle to a minimum.
With the two equivalent spindles, speeds of up to 15,000 rpm can be achieved on both the main and counter spindles. Optionally, the counter spindle can be equipped with an internal clamping cylinder, which promises maximum roundness on the component, as the rotating masses are significantly reduced. The DOLittle B6 has a fully functional Y-axis (optional) under the counter spindle, which means that the transfer position from the main spindle to the counter spindle can be adjusted in all three linear spatial directions via the control.The machine concept is optimally suited for simultaneous machining of small to medium component sizes. It is possible to produce parts with a diameter of up to 26 mm with the highest precision. Thanks to the two VDI-25 turrets on optional Y-axes, even complex components up to 60 mm in length can be produced in the best quality without any problems. In addition, the DOLittle B6 can be equipped with a tailstock, which is mounted next to the counter spindle and enables the machining of longer and slim components. With the DOLittle-B6, high-precision simultaneous machining is possible in the smallest space.
Working space DOLittle-B3 turning machine
Innovative tool concept
Tool block DOLittle lathe for static tools:
- Changeover time <10 seconds
- Setup and measurement of the tools outside the turning machine, thus parallel to the machining process
- Changing accuracy < 0.01 mm
- 4 receptacles each ø25 mm and 1 x 10mm (square)
- In diameter 25, hydraulic expansion sleeves for tool shank ø12 mm, holders for ER16 and ER11 collets as well as high-frequency spindles can be clamped
- Internal coolant supply for all tools, high coolant pressure possible for individual tools