We just bought a used Hansvedt EDM at work with a tool changer, it only hold 6 tools but is a very neat looking setup. It uses a double row chain with forks on it to hold the tools. There are ball detents to keep the tools in the holders and it looks like it rotates and extends using a worm drive an a eccentric camming opetation on a linear slide. I'll bet there are pictures on the net of it some where. |