Vertical to Horizontal Mill conversion.

[charlie murphyParticipant @charliemurphy79717]

hi

ian p & skarven i have uploaded some photo’s which may be of some interest you can let me know what you think that applies to all any constructive comments would be appreciated

 

cheers

charlie m

[charlie murphyParticipant @charliemurphy79717]

hi terryd

i have managed to post some photos but what a carry on i am only trying to help but will wait and see how it goes but many thanks for the help

 

much appreciated

 

thanks

 

cheers

charlie m

[Michael Cox 1Participant @michaelcox1]

Hi Charlie,

That looks a really neat adaptation of the angle grinder gearbox. Do you fix the saw blade to the output shaft using flanged washers?

Mike

[charlie murphyParticipant @charliemurphy79717]

hi mike

i use thin discs usually 125mm in dia that fit onto the grinder gearbox shaft but its open to anything you could use proper slitting discs with inserts but if you want to make it more rigid yes flanged washers could be used

 

the reason i wanted it was i had some versapak batteries which i needed to replace the internal nicads and tried using a dremel which worked but i figured the adaptor would be a better way to do it if you notice the table is driven on the mill i am not a proper engineer but a keen amateur

 

cheers

charlie m

[Michael Cox 1Participant @michaelcox1]

Hi Charlie,

I think most of us are not proper engineers ( I am certainly not one) but are just keen amateurs.

Mike

[Sub MandrelParticipant @submandrel]

Hi Skarven,

 

I understand in German it is die kormoran, but in my native land we call it a bilidowcar (the spelling may be a bit dodgy there!)

 

Neil

[SkarvenParticipant @skarven]

Hi Neil,

A search for bilidowcar popped up so many strange words that your native land has to be Wales! In Norway we have many names for that bird, among them kvitlåring (whitethigh), ålekråke (eelcrow), Shags ….

[SkarvenParticipant @skarven]

Hi Charlie

Nice pictures. I see that you have made what I am thinking of.

I picked the grinder apart to have a look at it and it looked quite good.

The grinder is a really cheap one from Biltema that I bought for about £18 a few years ago.

It is 900W at 11000 rpm.

The gear has 12 and 37 teeth giving 3.083:1. With my mill this will for 65-3200 rpm give a range of 21-1040, which should be OK.

The motor body is centered in the gearbox by a circular flange resting against the gearbox inside of the four holes for the screws connecting the gear to the motor.

The Motor shaft has a woodruff key for the small gear. There is one ballrace bearing for the motor in the gearbox, and one on the other end of the shaft.

The bearing for the output shaft seems to be quite good, with no play in any direction.

The gears also seems to be quite good, although there is a little bit of play there. I can’t imagine that this should be a problem for the intended use.

 

My first thought was to remove the motor and fan, cut the motor shaft to suitable length and fix the shaft in an ER32 collet chuck.

This seems a bit long to me, so I’m also thinking of making an adapter between the ISO30 mill shaft and the grinder motor shaft, as this will make the whole thing mch shorter and sturdier.

The gearbox is grease lubricated as is, but I wonder if a hypoid gear oil (for car rear axle) might be better. The load on this gear will of course be higher in this setup, but being little bit cautious I think you could keep it down to a factor of, let’s say 2, compared to the design load.

900W at 11000 rpm = 0.78Nm

mill is 1100W at 3200 rpm = 3.27Nm

The only thing now is to make the shaft adapter and the adapter between the gear body and the quill

 

[SkarvenParticipant @skarven]

A thought I had was to make a ISO32 collet for the grinders motor shaft. I have never seen a ISO32 collet, but it should be possible. Or maybe the cone isn’t right for collets?

[Cornish JackParticipant @cornishjack]

Re. names for cormorants – we have a regular visitor to the end of the groyne on ‘our’ beach – we call it Colin

Merry Xmas (or Bah! humbug, if you prefer)

Rgds

Bill

[Author]

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