Optimization design and analysis on Stewart six-dimensional force sensor is carried out

on the basis of finite element analysis

through ball head ball socket structure

cross recessed

and ring embedded cross beam structure.anticoupling ability of sensor is strengthened.At the same time

experimental comparison is carried out on optimized and non-optimized sensor.The sensor maximum error is reduced from 3.28 % to 0.41 % with one dimensional load

the maximum error is reduced from 4.76 % to 2.22 % with three-dimensional load.It is shown from above datas that the improved design is more reasonable and the precision of sensor is increased.