The square tube polishing machine can automatically adjust the diameter of the polishing tube.
(2) Adjust the height of the main machine support plate to align the workpiece center height with the center height of the guide wheel, small square tube polishing machine, and sanding disk. Secure the main machine support plate.
(3) The polishing machine's auxiliary device is positioned identically to the auxiliary grinder.
(4) Adjustment Method: Place the tube into the main unit (the main unit should be in the stopped state) and retract the grinding head. Loosen the locking screw of the support plate and turn the adjustment wheel. Continue until the center of the tube is equal to the guide wheel, then secure the support plate. Loosen the locking nut of the weight-bearing wheel of the feeding and discharging unit, turn the adjustment handle, and align the round tube's position in both the main and auxiliary units.
Before initiating the initial polishing, ensure each grinder head's position is checked to prevent overcutting and damage to the parts.
(6) The speed of the variable-speed motor driving the guide wheel is gradually increased to prevent accidents.
(7) Tubes with excessive curvature should be straightened before polishing.
(8) To achieve an economically reasonable polishing effect, it is not only essential to select the polishing cut-in quantity rationally but also to choose the number of polishing heads based on the original surface conditions. If the condition of the involved surface of the workpiece is good, the number of polishing heads for the workpiece can be reduced.
(9) Machine tools should use qualified abrasive felt disks for polishing; otherwise, vibration and safety accidents may occur due to unbalanced blades and other reasons.


