CNC lathe has several key parameters, through these parameters can roughly judge the lathe processing capacity and choose a suitable model, the following is mainly on the CNC lathe diameter of a few values.
The maximum swing diameter over bed (the maximum diameter of the workpiece) : it is the largest diameter of the workpiece that can be rotated over bed by the CNC lathe chuck, that is to say, the chuck clamps the workpiece to rotate without interference with the bed, but it is usually impossible to turn the outer circle of workpiece diameter.
Generally refers to the processing of disc parts of the end face and inner hole, the length is short, do not need to pass through the slide, so not by the interference of the slide.
Maximum turning diameter (the maximum diameter of the end face) : it is the maximum end face diameter that the CNC lathe can turn. The X-axis stroke is usually slightly larger than half of the maximum turning diameter. On the flat bed saddle lathe (CAK, A2 large HTC), the diameter is the same as the maximum swing diameter of the bed (only applicable to the standard tool rest, optional tool rest will be different); This diameter is smaller than the maximum swing diameter of the bed on a slant saddle lathe (flat bed ETC or slant bed HTC) because the bed is different from the tool rest structure.
Maximum swing diameter on the slide (the maximum diameter of the outer circle, with HTC2050 and 3230 exceptions) : refers to the turning axis workpiece outer circle, the workpiece must be turned on the top of the slide, in this case the maximum diameter.
Slide is higher than the guideway surface, so the bed maximum swing diameter of the workpiece in the outer circle will be interference, so the bed saddle maximum swing diameter is smaller than the bed maximum swing diameter. Generally, the maximum turning diameter is larger than the maximum turning diameter on the slide, and the maximum turning diameter on the slide is the maximum diameter of the outer circle of the lathe. The maximum turning diameter of HTC2050 and HTC3230 is less than the maximum swing diameter on the slide. In this case, the maximum turning diameter is the maximum diameter of the outer circle of the lathe. The maximum turning diameter can also be increased to the maximum turning diameter on the slide by increasing the stroke of X axis.
The parameters of some CNC lathes are compared as follows :(with tool rest)
Max.swing dia.over bed
Max.swing dia.on slide