Author Topic: Mill Vise From Morrison & Marvin Castings  (Read 12214 times)

Offline Dave Otto

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #90 on: June 14, 2020, 10:16:38 PM »
I need to build one of those steel ones for the Aciera F1.    I should consider that......

  :thinking:

Dave

And with your new toy in the shop it may simplify many of the operations. :D

Dave

Offline Bobsmodels

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #91 on: June 15, 2020, 01:06:46 AM »
Dave

You would start this project up again, I am working on three now.  Guess I need to add this back in.  I think I started a thread on it once.

I appriciate the number setup, I have the tilting indexer so guessed that was how you would attack it.  I will need to stamp the numbers so need a setup to hold the stamps, will need some playing around.

To make things worse I am following your build on the other vise, -  not sure about 5 projects I will run out of bench space!

 I really enjoy following along.

Bob

Offline Dave Otto

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #92 on: June 15, 2020, 01:24:21 AM »
Hi Bob

I did 4 of them, two bronze and two steel; yes it is quite an undertaking. 1440 divisions not including the engraving of the numbers. :o
Glad to hear that I'm not the only one with multiple projects on the bench. :lolb:

Thanks for following along.
Dave

Offline Dave Otto

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #93 on: June 15, 2020, 01:31:12 AM »
Dave

You would start this project up again, I am working on three now.  Guess I need to add this back in.  I think I started a thread on it once.

I appriciate the number setup, I have the tilting indexer so guessed that was how you would attack it.  I will need to stamp the numbers so need a setup to hold the stamps, will need some playing around.

To make things worse I am following your build on the other vise, -  not sure about 5 projects I will run out of bench space!

 I really enjoy following along.

Bob

Found it Bob now you don't have any excuse. :Lol:
http://www.modelenginemaker.com/index.php/topic,8258.0.html

Dave

Offline Don1966

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #94 on: June 15, 2020, 02:47:33 AM »
You just got to respect a man who’s mill is always clean and does museum quality work. Always a pleasure to see updates Dave!.... : :Love:




 :drinking-41:
Don

Offline Kim

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #95 on: June 15, 2020, 05:49:25 AM »
Wow, Dave!  That is some fine engraving!  Incredibly neat and tidy.  You should be proud if that!
Kim

Offline Bobsmodels

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #96 on: June 15, 2020, 06:57:57 PM »

[/quote]

Found it Bob now you don't have any excuse. :Lol:
http://www.modelenginemaker.com/index.php/topic,8258.0.html

Dave
[/quote]

Thanks for the push  - I think!!

Bob

Offline kvom

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #97 on: June 15, 2020, 08:19:36 PM »
Build your 4th axis with a harmonic drive and you won't need to worry about backlash.  If you start with a rotary table that has a worm gear, both backlash and wear will be a problem.  And likely too heavy to tilt for a job like this.

Offline Dave Otto

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #98 on: June 16, 2020, 12:42:12 AM »
Thanks Don & Kim,
Bob, I'm looking forward to seeing some progress pictures of your Vises.

Kirk, I don't think that I would waste my time trying to convert a rotary table, The harmonic drive would certainly remove the backlash but I wonder how durable it would be? That fine tooth flex gear seems like to would be prone to breakage?  I think a unit that would hold a 5C collet would cover most anything I would do with it. I also have 3 and 4 jaw chucks mounted on 5C arbors that could be used. Maybe I should by a motor and encoder and get that running, then I could think about the hardware part.

Dave

Offline steamer

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #99 on: June 16, 2020, 12:50:30 AM »
Tormachs A axis is a harmonic drive by the way
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline Dave Otto

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #100 on: June 16, 2020, 01:07:07 AM »
Is it direct drive between the motor and spindle or is there a belt in between?

Dave

Offline steamer

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #101 on: June 16, 2020, 02:02:01 AM »
It appears to be direct
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Damned ijjit!

Offline steamer

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #102 on: June 16, 2020, 02:11:49 AM »
https://tormach.com/microarc-4-4th-axis-38412.html

Hollow shaft stepper motor allows stock to be fed through the center.
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline steamer

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #103 on: June 16, 2020, 02:15:06 AM »
Backlash is specd at 18 arc seconds....
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline Dave Otto

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Re: Mill Vise From Morrison & Marvin Castings
« Reply #104 on: June 21, 2020, 06:16:14 PM »
Hi Everyone

Continuing on with work on the Mill Vise.

I had picked up this nice little block from a retired tool maker along with some other cool shop made items awhile back. Curious about its accuracy I took it to work where we have a very well equipped metrology lab. Using a Square Master and 50 millionths indicator I checked every surface on this little guy. I was quite pleased to find everything square and parallel to within a tenth; the ol boy that ground this really had some serious skill. :praise2:
I made the set of toe clamps form O1 steel, then hardened and ground them. I also designed and printed a tray to keep everything together.


I didn’t take a lot of photos of the grinding but here are a few. The tooling block was used to hold the jaws for most of the grinding operations. In this picture it is being set up to grind the sides of the moveable jaw parallel to machined guides.


Then it is only a matter of rotating the block to grind the jaw plate face square to the sides of the jaw.


After the jaws were ground and assembled, the jaws were preloaded using one of the ground jaw plates. Then the tops of the jaws were dusted off to make them pretty, and parallel to the bottom of the vise.


After lots of tedious masking the castings are ready for paint.


Everything was given a light coat of etching primer.

More later, thanks for checking in.
Dave