Wheel hub special drilling device

A wheel hub special drilling device, comprising:

• a main shaft transmission device, which has a transmission mechanism base and a transmission mechanism mounted on the transmission mechanism base, wherein the transmission mechanism comprises an X-axis transmission mechanism, a Y-axis transmission mechanism and a Z-axis transmission mechanism which are used for respectively moving a main shaft in three vertical axial directions;
• a main shaft, which is mounted on the vertical Z-axis transmission mechanism;
• a drilling tool, which is mounted on the main shaft and is rotationally driven by the main shaft;
• and
• a clamp device, which is used for clamping and fixing a wheel hub to be processed;
• wherein the clamp device includes:
• a clamp seat and at least two clamps for clamping and fixing the wheel hub, wherein the at least two clamps are arranged on the clamp seat side by side along the conveying direction of the wheel hub;
• a clamp base, wherein the clamp seat is disposed on the clamp base;
• a positioning device for the clamp seat, the positioning device comprises at least two pin holes arranged in the clamp seat and at least one positioning pin inserted into the at least two pin holes, wherein the at least one positioning pin positions the at least two clamps in the machining positions of the clamp device respectively;
• a first driving device, which drives the clamp seat together with the at least two clamps arranged on the clamp seat to move and switch between a machining position and a clamping position of the clamp device;
• and
• a second driving device for driving the at least one positioning pin, mounted on the lower surface of the clamp base.