A position compensation system based on displacement sensor is designed

aiming at the problem that grinding robots mostly use open-loop control and have no visual function and can not correct the placement errors of castings.The system uses laser displacement sensor as detection device to detect the position data of the castings to be polished.The measured values are transmitted to the programmable multi-axis motion controller CK3 M in which analog quantity is transformed into digital quantity

and then sent to upper computer Lab VIEW by industrial ethernet in Lab VIEW.After normalizing the position data of the castings

the compensation of each axis is generated by the difference between the normalized value and the standard value

and then the accurate grinding of the offset castings is realized.Experiments show that the grinding error caused by the deviation of casting placement can be corrected by introducing the compensation amount of each axis in the grinding cycle

which has high reliability in repeated grinding experiments and greatly improves the grinding quality of castings.