rimcanyon
Diamond
- Joined
- Sep 28, 2002
- Location
- Salinas, CA USA
Thought I would post some photos of the vise base I made for a recently acquired Hilma 100 vise. I recycled a 9" backing plate that was received damaged in shipping (one of the D1-3 pins had been broken off; I hate to think what it did to the USPS equipment).
There is a new center in the plate to replace the D1-3 mount. The project was interesting because it involved some work I had not done before. All of it was done with the horizontal spindle, mounted on a large angle plate, mainly so that the chip removal from the t-slot was helped by gravity. It worked great. I also had not previously done much engraving work. The 5 and 10 degree lines were done with a 1/16" ball mill .005" deep, and the degree numbers and the 1 degree lines were done with a carbide D-bit I ground with a sharp point, .005" deep. Engraving the numbers was also interesting because they were hand g-coded (like the rest of the program). The zero's use the 4-arc method for ovals, and if you look closely they aren't perfect, I have an error in the math but it was close enough. One question for the engravers in the audience: both the 1/16" ball mill and the D-bit raised a substantial burr. I ended up stoning it off, but is there a way to avoid the problem?
The oil troughs are helices, which was interesting on the D2 machine. They took forever to cut, because the program iterated G02 and G03 in 0.1 degree increments, each time dropping a half a thousandth. You could see all the context switching going on as the machine reloaded the registers for every function call.
I intend to paint the Hilma vise, but painting is not my favorite job.
There is a new center in the plate to replace the D1-3 mount. The project was interesting because it involved some work I had not done before. All of it was done with the horizontal spindle, mounted on a large angle plate, mainly so that the chip removal from the t-slot was helped by gravity. It worked great. I also had not previously done much engraving work. The 5 and 10 degree lines were done with a 1/16" ball mill .005" deep, and the degree numbers and the 1 degree lines were done with a carbide D-bit I ground with a sharp point, .005" deep. Engraving the numbers was also interesting because they were hand g-coded (like the rest of the program). The zero's use the 4-arc method for ovals, and if you look closely they aren't perfect, I have an error in the math but it was close enough. One question for the engravers in the audience: both the 1/16" ball mill and the D-bit raised a substantial burr. I ended up stoning it off, but is there a way to avoid the problem?
The oil troughs are helices, which was interesting on the D2 machine. They took forever to cut, because the program iterated G02 and G03 in 0.1 degree increments, each time dropping a half a thousandth. You could see all the context switching going on as the machine reloaded the registers for every function call.
I intend to paint the Hilma vise, but painting is not my favorite job.