GENERAL-PURPOSE TEST DEVICE, LINEAR ACTUATOR, AND TWIST TEST DEVICE

摘要

In a general-purpose test device and a linear actuator which drive a cross head by a servo motor and a feed screw mechanism, the servo motor and a linear guide of the feed screw mechanism are fixed to a single support plate. It is preferable that a drive shaft of the servo motor be coupled to the feed screw by a rigid coupling or a semi-rigid coupling. Moreover, in a twist test device which applies a twist load to a test piece by the servo motor and a speed reduction mechanism, both of the servo motor and the speed reduction mechanism are fixed to a first support member as a single member. It is preferable that a drive shaft of the servo motor be coupled to an input shaft of the speed reduction mechanism by the rigid coupling or the semi-rigid coupling.