Sep. 25, 2025
Traditional steady rests typically use two or three points of support, manually adjusting each support rod to achieve concentricity with the spindle.
Adjustment accuracy often depends on the worker's feel, resulting in low precision and efficiency.
This method cannot meet the high-precision and high-efficiency requirements of CNC machine tools,
leading to the emergence of hydraulic self-centering steady rests.
The hydraulic self-centering steady rest structure consists of a housing with two pivotally connected clamping arms on both sides of the housing's front end.
The housing also houses a cam follower that performs linear reciprocating motion. Each side of the cam follower pivotally connects to a return plate with a slide groove.
A pin corresponding to the slide groove is mounted on the rear end of the clamping arm and is installed in the slide groove. Furthermore,
the front end of the clamping arm and the front end of the cam follower also have support bearings.
The rear end of the clamping arm has a rotatable sliding bearing, and the cam follower has a curved surface corresponding to the sliding bearing.
A hydraulic drive cylinder is located at the rear end of the housing.
The hydraulic drive cylinder consists of a cylinder body and a hydraulic piston rod housed within the cylinder body that drives the cam follower.
The hydraulic piston rod is connected to the rear end of the cam follower.
