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What are the functional differences between flat-bed CNC lathes and slant-bed CNC lathes? DONGS Machine Tools will answer your questions.
Jul 28,2025
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The bed of a flat-bed CNC lathe is horizontal, and this design makes workpiece clamping and changing relatively simple and suitable for most routine machining tasks. Its structure is relatively simple and easy to maintain, suitable for mass production and occasions that do not require high machining accuracy. The slant-bed CNC lathe adopts a tilted bed design, which can effectively reduce the impact of the cutting force on the bed, improve the stability of the machine tool, and then improve the machining accuracy.
Due to the different design structure of the bed, the following aspects are compared and illustrated:
1.Cutting performance
From the cutting performance point of view, the slant-bed CNC lathe is more resistant to bending and torsion. Slant-bed CNC lathe tool is cutting from the workpiece diagonally above down, so the spindle can maintain a relatively smooth movement, effectively reducing the cutting vibration, while the flat-bed CNC lathe is different, the tool and the workpiece to maintain a perpendicular state of the cutting force is more likely to cause vibration, noise and impact on the accuracy and service life of the machine tool.
2.Machining precision
Flat bed / slant bed CNC lathe screw and nut between the existence of a very small transmission gap, as long as there is a gap, when the screw to a direction of movement and then reverse movement, will eliminate the backlash, there is a backlash is bound to have an impact on the repeatability of the positioning accuracy and affect the machining accuracy; slant bed CNC lathe layout is different, it can be a direct impact on the clearance of the X-direction ballscrew. Gravity will have a direct effect on the axial direction of the screw, thus ensuring that the backlash during transmission is zero. On the other hand, flat bed CNC lathe's X-direction screw is not affected by X-axis gravity, so it is difficult to eliminate the backlash directly. Slant-bed CNC lathes typically have higher machining accuracy. This is because they are designed to better resist vibration and thermal deformation, and are suitable for high-precision machining tasks, especially in areas that require detailed machining, which explains why slant-bed CNC lathes have an advantage in machining accuracy over traditional flat-bed machines.
- chip removal force
Due to the inclined bed, the chip removal effect is also better, which can effectively avoid the machining problems caused by the accumulation of chips. Inclined bed CNC lathe in the design to avoid the phenomenon of chip accumulation in the screw and guideway, and is equipped with automatic chip removal machine to remove chips, while the flat bed by the structure of the limitations of the chip is easy to fall on the screw and guideway, need to be cleaned regularly to avoid the impact of the machine tool's machining performance.
- Automated production
Slant-bed CNC lathe can be assembled with 12-station power turret, which can clamp multiple power heads at one time, turn, mill, drill, tap, hobbing and other processing of the workpiece, and automatic chip removal; flat-bed CNC lathe does not have these advantages in the structure.
For more information, please contact DONGS CNC Machine Tools.
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