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The 2MK22120X200 gantry vertical CNC internal cylindrical honing machine is a new generation of large-scale CNC honing machine developed by Dahe CNC Machine Tool Co., Ltd. The machine tool adopts a frame structure and is equipped with our company's self-developed patented technology - a CNC honing machine hydraulic reciprocating follow-up control device and a multi-stage hydraulic feed system for the honing machine, achieving precision machining of various hydraulic cylinders, mining and petroleum machinery, marine engine cylinder holes, and cylinder liners.

The reciprocating motion of the spindle adopts a mobile spindle box structure, which has good spindle rigidity and rotational accuracy. Linear guides are installed on two frame columns, and the spindle box moves on the linear guides to achieve the reciprocating motion of the spindle. The driving of reciprocating motion is achieved by two reciprocating oil cylinders installed on two frame columns respectively.

This machine tool adopts the research and development achievement of the national science and technology major project undertaken by our company, which is the reciprocating CNC drive system for the spindle of the CNC honing machine, to achieve the CNC control of the honing machine tool.

It can achieve CNC control of three axes, including spindle reciprocating, spindle rotation, and worktable movement; It can achieve the machining of mesh patterns at any angle in the inner hole of the machined part.

This machine tool adopts a hydraulic position closed loop composed of a CNC mechanical position closed loop and a linear mechanical hydraulic servo valve, forming a hydraulic reciprocating motion follow-up CNC reversing device. This equipment has the characteristics of flexible and convenient numerical control, rapid linear motion response, and large driving load, achieving the positioning accuracy and speed required for the reciprocating motion of the honing machine, and can be CNC controlled.