Grinding Machine with Replacement Structure for Replacing Trimming Grinding Wheel Automatically

A grinding machine comprising:

• a working grinder and a holding unit;
• wherein:
• the working grinder includes a grinding wheel mounting section and a power mechanism;
• a grinding wheel is mounted on the grinding wheel mounting section;
• the power mechanism supplies a power to the grinding wheel mounting section to drive the grinding wheel;
• the holding unit includes a base, a movable seat movably mounted on the base, and a holding device mounted on the movable seat for holding a workpiece;
• the holding unit further includes a grinding wheel trimming module mounted on the movable seat;
• the grinding wheel trimming module includes a transmission shaft box, a motor, a holding claw, and a clamping cylinder;
• the transmission shaft box is mounted on the movable seat and arranged beside the holding device;
• the motor is mounted on a side of the transmission shaft box and provides a power to the transmission shaft box;
• the holding claw is mounted on a first end of the transmission shaft box for holding a trimming grinding wheel;
• the clamping cylinder is mounted on a second end of the transmission shaft box for driving the holding claw to clamp the trimming grinding wheel;
• the holding unit further includes a pedestal arranged beside the base, and a clamping arm mounted on the pedestal;
• the clamping arm is provided with a holding end;
• the holding end of the clamping arm grips the trimming grinding wheel and moves the trimming grinding wheel to the holding claw of the grinding wheel trimming module;
• the holding claw is driven by the clamping cylinder to clamp the trimming grinding wheel;
• the holding end of the clamping arm releases the trimming grinding wheel;
• and
• the motor drives the transmission shaft box which drives and rotates the holding claw which rotates the trimming grinding wheel.