The Application Of Harmonic Reducer in Automatic Tool Changing CNC Milling Machine!

The automatic tool changing CNC boring and milling machine produced by a customer in Shenzhen adopts a harmonic reducer in the tool magazine transmission part to achieve a large reduction ratio and low-speed rotation of the tool magazine. After several months of operation testing, no problems have been found, and it can well meet the requirements of the automatic tool changing CNC boring and milling machine for the tool magazine transmission part.

Harmonic reducer is one of the new transmission technologies in harmonic gear transmission devices, which has the characteristics of high motion accuracy, large transmission ratio, light weight, and small volume. Its application in automatic tool changing CNC boring and milling machines further proves that it has a series of advantages such as simple structure, small volume, large reduction ratio, high transmission efficiency, smooth operation, impact resistance, reliability, and good stability. The main structures of harmonic reducers include rigid wheels, flexible wheels, bearings, and wave generators, all of which are indispensable. Among them, the number of teeth on the rigid wheel is slightly greater than that on the flexible wheel.In the automatic tool changing CNC boring and milling machine, the customer uses a hollow harmonic reducer, which is designed specifically to save mechanical equipment space and reduce overall costs. Therefore, a large-diameter hollow hole and flat shape design are adopted.The following are the main structural characteristics of hollow harmonic reducers:

Harmonic generator: A component with a thin ball bearing embedded in the outer ring of an elliptical cam, forming an elliptical shape as a whole.

Bearing: The inner ring of the bearing is fixed on the cam, while the outer ring is elastically deformed by the ball bearings. Usually installed on the input shaft.

Flexible wheel: a component made of metal elastomer with a thin-walled cup-shaped structure. The outer ring of the opening of the cup is engraved with a tooth shape. The bottom of the flexible wheel is called a membrane and is usually installed on the output shaft.

Rigid wheel: a rigid ring-shaped component. The inner side is engraved with teeth of the same size as the flexible wheel, and has 2 more teeth than the flexible wheel. Usually fixed on the shell.

In addition to automatic tool changing CNC boring and milling machines, this reducer is also widely used in CNC machine tools, industrial robots, photovoltaic equipment, medical devices, semiconductor equipment, aerospace and other fields.