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Speed control of CNC machining

Published on:2018-7-25 16:15:11   Reading:times


Speed control of CNC machining

 

1. flexible acceleration and deceleration control

 

In the CNC machining, the specific automatic speed control function is directly realized by the system program. In this way, it is necessary to change or add and subtract the numerical control program by changing or adding and subtraction of the acceleration and deceleration characteristics of the system, so that the ordinary users can not make the CNC machine with the best acceleration and deceleration performance according to their own wishes. Therefore, the flexible acceleration and deceleration control method which we put forward adopts the principle of database, and divides the acceleration and deceleration control into two parts: description and implementation of acceleration and deceleration, and separation of acceleration and deceleration description from system program. In the software of numerical control system, a general control channel that is unrelated to the content of the acceleration and deceleration database is designed to perform the acceleration and deceleration calculation and the trajectory control independently.

 

2. flexible automatic acceleration control

 

Set up acceleration curve, analytical curve and non analytical curve, and use them as templates to store in the acceleration and deceleration curve Library in the form of numbers.

 

3. flexible automatic deceleration control

The acceleration control is stored in the acceleration and deceleration curve library as a template in the form of a number table. Reasonable automatic acceleration and deceleration control is an important link to ensure the dynamic performance of CNC machine. Due to the lack of flexibility, the traditional automatic acceleration and deceleration control based on the fixed curve is difficult to ensure the combination of the acceleration and deceleration process with the performance of the machine tool, and it is difficult to make the dynamic characteristics of the machine tool best.


Key words:China Lathe Machining

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