CNC machine tools were born to adapt to the mass automated production of modern industrial production, and the key word is automation. Flat bed CNC lathe is a simple CNC transformation from ordinary lathe, and there is no consideration in automation. The CNC lathe with inclined bed is developed and designed according to the principle of CNC machining, and it is very targeted. It has significantly improved the layout, rigidity, precision, and chip removal capacity of the machine tool compared with the CNC lathe with flat bed. These advantages are innate advantages brought from the mother’s womb, and cannot be reduced by manufacturing means.
1: High machining accuracy
The transmission screw of the CNC lathe is a high-precision ball screw. The transmission gap between the screw and the nut is very small, but it does not mean that there is no gap. As long as there is a gap, when the screw moves in one direction and then drives in the reverse direction, it is inevitable that a reverse gap will be generated. The reverse gap will affect the repeated positioning accuracy of the CNC lathe, thereby affecting the machining accuracy. The layout of the inclined bed CNC lathe can directly affect the clearance of the ball screw in the X direction. The gravity directly acts on the axial direction of the screw, making the reverse clearance during transmission almost zero. The X-direction screw of the flat bed CNC lathe is not affected by the axial gravity, and the clearance cannot be directly eliminated. This is the inherent precision advantage that the design brings to the inclined bed CNC lathe.
2: The machine tool has good rigidity and is not easy to cause vibration during cutting
The cross-sectional area of the inclined bed CNC lathe is larger than that of the flat bed of the same specification, that is, it has stronger bending and torsion resistance. The tool of the inclined bed CNC lathe cuts downward from the oblique upper part of the workpiece, and the cutting force is basically consistent with the gravity direction of the workpiece, so the spindle runs relatively smoothly and is not easy to cause cutting vibration. When the flat bed CNC lathe is cutting, the cutting force generated by the tool and the workpiece is 90° to the gravity of the workpiece, which is easy to cause vibration.
3: Due to gravity, iron chips are not easy to wrap around the tool, which is conducive to chip removal. Due to gravity, the inclined bed CNC lathe is not easy to wrap around the tool, which is conducive to chip removal; at the same time, with the central screw and guide rail protection sheet metal, chips can be prevented from accumulating on the screw and guide rail. 4: High degree of automation The increase in the number of tool positions of the machine tool and the configuration of the automatic chip conveyor are actually laying the foundation for automated production. One person guarding multiple machine tools has always been the direction of machine tool development. The inclined bed CNC lathe is equipped with a milling power head, an automatic feeding machine or a manipulator, automatic loading, and all chip cutting processes are completed in one clamping. Automatic unloading and automatic chip removal have become extremely efficient automatic CNC lathes. Although flat bed CNC lathes can also add power milling heads and automatic loading, their structure is at a disadvantage in automated production.
