soldernerd

This is the first of a series of probably four posts about the restoration of a Tripet MHP 500 surface grinder. The series came together a bit on the fly so the writeup is lagging behind the actual work. Everything shown here is already done and the machine is up and running.

This page is a short overview of my posts on a 1963 Tripet MHP 500 surface grinder that I picked up and put back to work. The Tripet is a compact, Swiss-built grinder. Mine originally came from the Werkzeugmaschinen-Laboratorium at ETH Zürich and now lives in my workshop.

It’s been a while. The blog has been sitting there, largely unchanged, collecting dust and serving ads to anyone who happened to stumble across it. So I decided it was time for an overhaul.

Looks almost like the first version This board may look familiar to some of you. Because at first glance, it looks just like its older brother described here: Dividing Head Controller. But many things have been improved in Revision B.

The Universal Interface It’s time to present a relatively simple yet useful device: the Universal Interface. The need for this little helper arised when building the control for my CNC milling machine. But that’s a major project that I will introduce another time. Today it’s only about this little board.

I’ve just finished the variable-frequency drive (VFD) for my 1970s Schaublin 102 lathe. Before I dig into details, there’s a youtube video here:

This post ist about the CNC conversion of a manual dividing head aka indexing head. If you’re not familiar with that kind of equipment, there’s a wiki page here. One makes use of interchangeable indexing plates and and the internal worm gear to accurately divide the circle. Parts like cogwheels and the like can be machined this way. A video of the finished project can be found here on my youtube cannel.

Let’s start with a video. It will tell you most of what I’m going to write about today.