Rainbow series automatic high-speed cold heading machine absorbs the advanced experience and technology of similar machines in local and abroad. The heading mechanism includes crank mechanism, main slider, horizontal axis, side cam, front cam, brake, clamp, feed, eject, cutting and die seat etc parts. The cold dial (rod) is after straightening, feeding, cutting, feeding, cold heading, and unloading procedures. The machine has a reasonable structure layout, stable operation, low failure rate, easy adjustment, simple operation, and easy maintenance; and high ball efficiency, small ball misalignment, and high steel utilization rate; the machine tool runs stably and reliably, and is currently the industry's advanced ball device.