Shandong Deed Precision Machine Tool Co., Ltd.
Shandong Deed Precision Machine Tool Co., Ltd.

What Is the Difference Between Inclined Bed CNC Lathe and Flat Bed CNC Lathe?

Numerical control lathe is one of the most commonly used machine tools in modern manufacturing, widely used in the machining of parts in fields such as machinery, aviation, automotive, electronics, and molds. Slant bed CNC turning machine and flat bed CNC turning machine are two common types of CNC turning machine. Although both can achieve high precision and efficiency machining, there are still some significant differences between them. The following will give a detailed introduction to the differences between slant bed CNC turning machine and flat bed CNC turning machine.


The characteristics of slant bed CNC turning machine


The bed of slant bed CNC turning machine is designed at 45-degree inclined angle, with the machining position of the workpiece on the machine tool lower, which can reduce the height between the workpiece and the ground, facilitating the observation, adjustment, and machining by operators. In addition, the X-axis stroke of slant bed CNC turning machine is longer, allowing more tools and longer workpieces to be accommodated, thereby expanding the machining range and improving the efficiency. The cutting force of slant bed CNC turning machine is basically in line with the direction of the gravity of the workpiece, and the spindle operation is relatively stable, with less cutting vibration. Slant bed CNC turning machine is less likely to produce tangled cutting tools due to the influence of gravity, which is conducive to chip removal. Slant bed CNC turning machine has high precision and stability in machining.


The characteristics of flat bed CNC turning machine


The bed plane of flat bed CNC turning machine is parallel to the ground, making it more convenient for loading and unloading and adjustment. Flat bed CNC turning machine's structure is simple and easy to maintain, so it has lower costs and is widely used in some simple machining fields. The cutting force generated by the tool and the workpiece in the machining process in flat bed CNC turning machine is at 90 degrees with the gravity of the workpiece, making it easy to cause vibration and affect the cutting quality. Therefore, slant bed CNC turning machine has a significant advantage in high-precision machining and the machining of workpieces with high cutting quality requirements.


Comparison between slant bed CNC turning machine and flat bed CNC turning machine


Machining range


The bed surface inclination of slant bed CNC turning machine allows longer workpieces to be accommodated, while flat bed CNC turning machine needs to add support devices to machine long workpieces.


Cutting quality


The cross-sectional area of slant bed CNC turning machine is larger than that of the same specification flat bed, that is, it has stronger bending and torsional resistance. When the tool cuts the workpiece in the oblique direction, the cutting force is basically consistent with the gravity direction of the workpiece, and the spindle operation is relatively stable, making it less likely to cause cutting vibration and ensuring high-quality cutting.


In contrast, in the flat bed CNC turning machine, the cutting force generated by the tool and the workpiece is at 90 degrees with the gravity of the workpiece, which is easy to cause vibration and affect the cutting quality. Therefore, slant bed CNC turning machine has obvious advantages in high-precision machining and workpiece machining with high cutting quality requirements.


Machining accuracy


The processing accuracy of CNC turning machine is affected by many factors, among which the clearance of the transmission leadscrew is an important factor. The layout of the slant CNC turning machine can directly affect the clearance of the X-direction ball screw, and the gravity directly acts on the axis of the screw, making the reverse clearance of the transmission almost zero, greatly improving the processing accuracy.


The X-axis screw in the flat bed CNC turning machine is not affected by the axial gravity, cannot directly eliminate the clearance, and thus affects the machining accuracy. The slant bed design of CNC turning machine has inherent advantages in machining accuracy.


Chip removal ability


Chip removal is an issue that cannot be ignored in the machining process. Due to the influence of gravity, slant bed CNC turning machine is less likely to produce tangled cutting tools, which is conducive to chip removal. At the same time, slant bed CNC turning machine is usually equipped with an automatic chip removal machine, which can automatically remove chips, increase the effective working time of workers, and improve production efficiency. The structure of the flat bed is difficult to increase the automatic chip removal machine, so it is not as good as the slant bed CNC turning machine in chip removal ability.