Riser block

Discussion on all milling machines vertical & horizontal, including but not limited to Bridgeports, Hardinge, South Bend, Clausing, Van Norman, including imports.

Moderators: Harold_V, GlennW

bill jones
Posts: 31
Joined: Thu Jan 28, 2010 7:20 pm
Location: salt lake city, utah
Contact:

Re: Riser block

Post by bill jones » Wed Mar 06, 2019 3:08 pm

---here a link to my ordeal of lifting the head of the mill to install an 8" riser block---where I didn't have room to lift the mill from above


http://ryanbrownracing.com/Bill_Jones_Page_10.html

User avatar
BadDog
Posts: 4721
Joined: Wed May 17, 2006 8:21 pm
Location: Phoenix, AZ

Re: Riser block

Post by BadDog » Wed Mar 06, 2019 4:08 pm

I removed the head from my most recent mill when I received it. To manage the head, I took a piece of (3/4" I think?) round stock and mounted it in the head with a collet (using a step ladder due to 8" riser). I then clamped it in the vise with a vertical v-block. And then unbolted it and left the vise managing the load and holding it vertical. Once I completed what I wanted to do with the head, I reinstalled it by reversing that procedure. The bolts to t-nuts was a bit frustrating, but not having to man handle the head made it not a huge deal.
Russ
Master Floor Sweeper

RSG
Posts: 1065
Joined: Fri Feb 04, 2011 9:59 am
Location: Ontario, Canada

Re: Riser block

Post by RSG » Thu Mar 07, 2019 9:21 am

Awesome tutorial Bill! Thanks,

Russ, your idea, like Bills is sort of what I had in mind only I was thinking wood but I like the steel idea better. Bill shows a support system on the back of the ram but you don't mention that for your method, did you support it in any way? My first thought would be a dangerous amount of stress on the spindle bearings without supporting the back.

My idea was to have a the support touching the bottom of the dovetail on the ram. If I made it out of steel as you both have I could fashion a clamping method for the dovetail ensuring it doesn't tip in any way.

Thanks for the added info guys!
Vision is not seeing things as they are, but as they will be.

User avatar
BadDog
Posts: 4721
Joined: Wed May 17, 2006 8:21 pm
Location: Phoenix, AZ

Re: Riser block

Post by BadDog » Thu Mar 07, 2019 4:21 pm

I removed the head with the method described. I then lifted the ram and turret as an assembly with 2 straps (front/back) using a gantry.
Russ
Master Floor Sweeper

RSG
Posts: 1065
Joined: Fri Feb 04, 2011 9:59 am
Location: Ontario, Canada

Re: Riser block

Post by RSG » Fri Mar 08, 2019 10:47 am

Got it, thanks Russ!
Vision is not seeing things as they are, but as they will be.

RSG
Posts: 1065
Joined: Fri Feb 04, 2011 9:59 am
Location: Ontario, Canada

Re: Riser block

Post by RSG » Fri Mar 08, 2019 10:52 am

Next question,

I just found out the manufacturer doesn't make one for my mill so I am going to...Do the long bolts hold the ram and the riser block in place with the spider or does the riser block get fastened to the pillar base separate?

Sorry if this may be a dumb question, I want to be sure.
Vision is not seeing things as they are, but as they will be.

John Evans
Posts: 1988
Joined: Tue Jan 20, 2009 9:33 pm
Location: Phoenix ,AZ

Re: Riser block

Post by John Evans » Fri Mar 08, 2019 12:11 pm

Normally long bolts.
www.chaski.com

User avatar
BadDog
Posts: 4721
Joined: Wed May 17, 2006 8:21 pm
Location: Phoenix, AZ

Re: Riser block

Post by BadDog » Fri Mar 08, 2019 9:06 pm

My 7" riser had 2 spiders and separate bolts. The turret used a standard spider and bolts.
Russ
Master Floor Sweeper

f350ca
Posts: 258
Joined: Wed Dec 21, 2011 6:10 pm
Location: Calabogie Ontario

Re: Riser block

Post by f350ca » Fri Mar 08, 2019 11:06 pm

My mill uses long bolts with I think its a 10 inch riser. I have some 12 inch 1/4 wall pipe if your anywhere close.

Greg

RSG
Posts: 1065
Joined: Fri Feb 04, 2011 9:59 am
Location: Ontario, Canada

Re: Riser block

Post by RSG » Sat Mar 09, 2019 7:46 am

BadDog wrote:
Fri Mar 08, 2019 9:06 pm
My 7" riser had 2 spiders and separate bolts. The turret used a standard spider and bolts.
That's what I was wondering as some ads are showing the riser and another spider.
Vision is not seeing things as they are, but as they will be.

RSG
Posts: 1065
Joined: Fri Feb 04, 2011 9:59 am
Location: Ontario, Canada

Re: Riser block

Post by RSG » Sat Mar 09, 2019 7:47 am

f350ca wrote:
Fri Mar 08, 2019 11:06 pm
My mill uses long bolts with I think its a 10 inch riser. I have some 12 inch 1/4 wall pipe if your anywhere close.

Greg
Thanks Greg, that's nice of you. I'll consider it if the plan I have doesn't work out but for now I might be able to get my hands on some 2" wall pipe.
Vision is not seeing things as they are, but as they will be.

Post Reply