- Aug 14, 2020
- Reaction score
I really like that it seems to be fun and become a nice discussion for everyone.
During the visit to the vendor of the Japanese machine, he happens to be only 2 km away from my place, I trapped my self into an impulse buy. I am not 100% sure if I did the right thing.
View attachment 126262The spindle is mounted on a vertical column, the spindle can be moved up and down, and from left to right.
The workpiece holding head can be adjusted in some angles, but obviously not tilted up or down.
View attachment 126263
The head can be tilted so that the work holding spindle and the grinding spindle are parallel, or more than 90°.
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For following the flutes, it has something similar to a lathe taper attachment.
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The vertical column with the spindle can be rotated around the vertical axis a little in both directions.
A hand wheel is broken. I have to fix it.
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The machine runs on Linar rails on most moving axis. But all the covers are damaged. The seller promised me they would not cost too much, he wants to hook me up with supplier of those.
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I was advised here in some posts to look for accessories. And as I feared the machine comes with "one" as in "1" collet. I did not even care to check its size. I think the seller bought it to be able to demonstrate the machine, the collet nut was brand new and srewed on very smooth. It uses C10 collets which limits clamping range from 2.4 to 10 mm diameter. These Collets seem to be Japanese style milling chuck collets. I will have to source them somewhere. ( I was told it is easy, I was not told it is cheap). I think practically the working range of the collets covers 85% of what I use. Only advantage is that they have a much better runout spec than ER collets.
The machine uses tiny tapered grinding wheel hubs. It comes with a few of those hubs. Grinding wheels inside diameter is 31.75, seems to be a common size.
The motor is a 3-phase 200 W motor that looks like it can run all day long, without problem. ( just from the looks)
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The machine was not cheap, but I managed to get 15% off the first asking price, plus free shipping. They will bring the 300 kg heavy beast with a truck with boom crane and unload it, so I do not have to do any difficult moving.
I saw the many home made solutions and at some point I will have another look into this I think it is a very interesting project to make one, even if it is only selfserving.
Norman sugested the lathe tool grinding jig, a thing that this machine is not really capable of.
I think I will follow that route at some point making a lathe tool grinding aid.
I must admit there is no such excuse available for me. I think I can buy all cutters somewhere, if not exotic size or spec within one workday.
If exotic size or spec, it is a matter of price quantity and waiting time.
The complete thing is nonsense in economical categories. Comparable to Aluminium wheels for the car. Something people (me) think they need to have, but is not neccesary.
I will see what I will do with it. (Doorstop not an option, it is too heavy to move to the door)
I would vehemently disagree with your assessment that this was a 'nonsense in economical categories' purchase.
You very much like making things in your shop - - - - this tool should be a great assist in those endeavors!
(Would suggest that you repair the broken way bellows pdq to keep the tool working well for a very long time!!! - - - -