How to program a CNC gear hobbing machine

Writer： admin Time：2024-08-08 10:27:34 Browse：54℃

The programming process of CNC gear hobbing machine mainly includes the following steps

Preparation work: Determine the model, diameter, number of teeth, and other parameters of the machined workpiece, and calculate the radial and axial offsets of the gear hobbing tool.

Set the machine tool coordinate system: Determine the coordinate system based on the machining process of the workpiece and the structure of the machine tool. 

The coordinate system of the CNC gear hobbing machine is divided into absolute coordinate system and relative coordinate system.

Establish a workpiece coordinate system: Establish a workpiece coordinate system based on the shape and processing technology of the workpiece, and determine the origin and the positive direction of the axis.

Choose gear hobbing tools and cutting parameters: Select appropriate gear hobbing tools and cutting parameters based on the shape and process requirements of the gear hobbing workpiece.

Write a gear hobbing program: Write a gear hobbing program according to the programming specifications of the gear hobbing machine, and use G code and M code for control.

Simulation and debugging: Use CNC simulation software to simulate and debug the pre written gear hobbing program, ensuring the correctness and feasibility of the program.

Automatic machining: Upload the pre written gear hobbing program to the gear hobbing machine and control it using the machine control system to achieve automatic machining.

During the programming process, it is also important to pay attention to the setting of the tool radius, taking into account tool wear and setting errors, 

in order to ensure the accuracy and efficiency of gear hobbing. In addition, the parameter setting of gear hobbing is the most critical step in programming,

Including information on tooth pitch, tooth width, tooth height, etc., it needs to be calculated according to the specific requirements of the workpiece. 

The writing of the machining path is also an important part, which defines the motion path and machining sequence of the machine tool,

It is necessary to plan the machining sequence reasonably based on the shape of the workpiece and the parameters of the gear teeth. ‌