Positioning device for woodworking milling machine

A positioning device for a woodworking milling machine, designed to mount the woodworking milling machine on a track device, wherein the woodworking milling machine comprises a vertical spindle head and a milling cutter, the milling cutter being connected to and rotated by the spindle head while extending downwardly to process a workpiece positioned below the woodworking milling machine;

• the track device comprising two first tracks and two second tracks, the first tracks being parallel to each other, and the second tracks also being parallel to each other, with the ends of each second track mounted above the corresponding first tracks to enable the first tracks to guide the movement of the second tracks above the workpiece;
• the positioning device comprising:
• a mounting platform, including a base plate and two track engagement members, wherein the base plate has a through hole, and each track engagement member is connected to the base plate, engages with the corresponding second track, and is guided by the second tracks to move, thereby enabling the mounting platform to move back and forth along the second tracks;
• a guide sleeve assembly, used to connect a middle portion of the spindle head in a vertical direction;
• multiple guide columns, each connected to the base plate, extending upwardly in parallel to each other, and each pivotally passing through the guide sleeve assembly;
• a drive unit, connected to the mounting platform;
• and
• a lead screw, connected to the drive unit and rotated by the drive unit, parallel to the guide columns and threaded through the guide sleeve assembly, thereby enabling the guide sleeve assembly to move the spindle head vertically;
• wherein the portion of the spindle head adjacent to the milling cutter along the axial direction is referred to as a coupling portion, the outer diameter of the coupling portion is defined as a first diameter, while the inner diameter of the through hole is defined as a second diameter, and the second diameter is slightly larger than the first diameter to allow the coupling portion to pass through the through hole.