The ZCS-QMK50A2 high-precision air floating desktop CNC external (internal) cylindrical grinder adopts an air static pressure workpiece electric spindle, an air static pressure external (internal) circular grinding wheel electric spindle, a natural marble bed body, and a Huazhong bus type high-precision CNC system. Achieve a machining accuracy of 0.2um roundness, 1um cylindricity, and Ra0.05um smoothness for the entire machine. The specific technical parameters are as follows:

1、 Technical features:
This machine tool is suitable for mirror machining of cylindrical outer (inner) circles, end faces, and conical surfaces, as well as multi-stage cylindrical outer circles, end faces, and conical surfaces.
The grinder adopts an air static pressure workpiece electric spindle and an air static pressure outer (inner) circular grinding wheel electric spindle, both of which are high-precision air static pressure (air bearing) spindles made of "nano carbon fiber material" with high rigidity, large load capacity, low air consumption, self-lubricating and wear-resistant properties. It has the characteristics of low-carbon, green, environmentally friendly, and wear-resistant.
The whole machine adopts a high-precision CNC system based on the Huazhong bus, achieving two line and two rotation spindle control. Achieve a machining accuracy of 0.2um roundness, 1um cylindricity, and Ra0.05um smoothness for the entire machine.
The workpiece and outer circular grinding wheel electric spindle are both equipped with permanent magnet synchronous motors, built-in encoders, and synchronous drivers to achieve stepless speed regulation.

The inner circular grinding wheel electric spindle adopts a high stiffness air static pressure AC asynchronous electric spindle, with a speed range of 1000-50000 revolutions per minute, 1.5KW, 0.29Nm, and an AC frequency converter stepless speed regulation. The grinding wheel is installed with a straight rod internal thread.

The workpiece clamping adopts various methods such as automatic spring chuck and high-precision chuck. Special fixtures can also be customized according to process requirements. Automatic loading and unloading devices can also be customized.
The feed of the grinding wheel frame and the movement of the worktable are both driven by high-precision linear guides and AC servo motors through high-precision ball screws.
The machine tool bed is made of high-quality natural marble, which has stable organization and solid structure.
The grinder is equipped with pressure sensors at the inlet of the air and water circuits, which have fault alarm protection functions such as overcurrent, overload, air pressure below the lower limit, and cooling water cut-off. And it has communication function with the upper computer (RS-485).

2、 Main Technical Parameters Table of the Whole Machine