Comparison between Inclined Bed CNC Lathe And Flat Bed CNC Lathe

CNC machine tools were born to adapt to the mass automated production of modern industrial production, and the key word is automation. The flat bed CNC lathe is a simple CNC transformation from a regular lathe, and its automation considerations are not comprehensive. The inclined bed CNC lathe is developed and designed based on the principles of CNC machining, with strong targeting. In terms of machine layout, rigidity, accuracy, and chip removal ability, it has significantly improved compared to the flat bed CNC lathe. These advantages are as follows:

1: High machining accuracy

The transmission screw of a CNC lathe is a high-precision ball screw, and 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 opposite direction, it is inevitable to produce reverse clearance, which will affect the repeated positioning accuracy of the CNC lathe and thus affect the machining accuracy. The layout of the inclined bed CNC lathe can directly affect the clearance of the X-direction ball screw, and gravity directly acts on the axial direction of the screw, making the reverse clearance during transmission almost zero. The X-direction screw of the CNC lathe with a flat bed is not affected by axial gravity, and the gap cannot be directly eliminated. This is the inherent precision advantage that design brings to inclined bed CNC lathes.

2: The CNC lathe has good rigidity and is less prone to vibration during cutting

The cross-sectional area of a CNC lathe with an inclined bed is larger than that of a flat bed of the same specification, which means it has stronger resistance to bending and torsion. The cutting tool of the inclined bed CNC lathe cuts downwards from the inclined top of the workpiece, and the cutting force is basically in the same direction as the gravity of the workpiece, so the spindle runs relatively smoothly and is not easy to cause cutting vibration. On the other hand, when the flat bed CNC lathe cuts, the cutting force generated by the tool and the workpiece is 90 ° with the gravity of the workpiece, which is easy to cause vibration.

3: Iron filings are less likely to wrap around cutting tools due to gravity, which is beneficial for chip removal

Due to the influence of gravity, the inclined bed CNC lathe is less prone to generating winding tools, which is beneficial for chip removal; Simultaneously cooperating with the central screw and guide rail protective sheet metal can prevent chips from accumulating on the screw and guide rail.

4: High degree of automation

The increase in the number of machine tools and the configuration of automatic chip removal machines are actually laying the foundation for automated production. One person on duty for 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 tool or a robotic arm, which can automatically load and clamp all the chip cutting processes in one go, and automatically discharge and discharge chips. This has become a highly efficient automatic CNC lathe. Although the flat bed CNC lathe can also add power milling heads and automatic feeding, its structure is at a disadvantage in automated production.