1. Comparison of cutting rigidity.
The cross-sectional area of the inclined bed CNC machine tool is larger than that of the flat bed of the same specification, that is, the anti-bending and anti-distortion ability is strong. The cutting tool of the oblique bed CNC machine tool cuts down on the slope of the workpiece, and the cutting force is basically the same as the gravity direction of the workpiece, so the main shaft is stable, which is not easy to cause cutting vibration, and the cutting force of the tool and the gravity of the workpiece is 90° when the flat bed CNC machine tool is cutting, which is easy to cause vibration.
2. Comparison of machining accuracy.
The transmission screw of CNC machine tool is a high-precision ball screw, the transmission gap between the screw and the nut is very small, but it is not without the gap, as long as there is a gap, the lead screw moves in one direction after the reverse transmission, the reverse gap will inevitably produce, the reverse gap will affect the repeated positioning accuracy of CNC machine tool, affecting the processing accuracy. The layout of the inclined bed CNC machine directly affects the clearance of the ball screw in the x direction, the gravity directly acts on the axial direction of the screw, and the reverse clearance during transmission is almost zero. The linear rod in the x direction of the flat bed CNC machine tool is not affected by axial gravity, and the gap cannot be directly erased. This is the precision advantage of designing inclined bed CNC machine tools.
3. Comparison of machine tool layout.
The two guide rails of the flat bed CNC machine tool are parallel to the ground plane. The plane of the two guide rails of the inclined bed CNC machine tool crosses with the ground plane to become the inclined plane, and the Angle is 30°, 45°, 60°, and 75°. From the side of the machine tool, the bed of the flat bed CNC machine tool is square, and the bed of the inclined bed CNC machine tool is right triangle. Obviously, in the case of the same track width, the X-direction mop of the inclined bed is longer than the flat bed, and the practical significance of the application of the lathe is that more tool numbers can be arranged.
4, automatic production comparison.
The increase of tool number and the configuration of automatic chip removal machine actually lay the foundation for automatic production. One person to protect multiple machine tools, has always been the direction of the development of machine tools. Inclined bed CNC machine tool added milling power head, automatic feeding machine or manipulator, automatic feeding, one clamp to complete all the chip process, automatic feeding, automatic discharge of chips, become a high efficiency automatic CNC machine tool. The structure of flat bed CNC machine tools is at a disadvantage in terms of automated production. The inclined bed CNC machine tool is more advanced than the flat bed CNC machine tool, but its market share lags behind.