Work holding device - Printable Version

Work holding device - Printable Version

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Work holding device - RobWilson - 02-18-2012

Hi Lads

being in the mood to weld bits of plate together , i thought i would make a start on building a fixture to hold work perpendicular to the machine table ,, be it mill, surface grinder , drill or whatever . Something that looks like this .
[Image: normal_DB%20Angle%20Plate.jpg]

It its a welded steel fabrication ,, 1" plate ,, each leg of the 90 is 3" and it will be 7" tall ,,,,,,,,, why these sizes ? well so it can be machined on the shaper . Always good when designing things to take into consideration your machine travel , tooling and work holding :med:

Here is the ruff part on the shaper table as you can see we need away to fix the part to the table .

[Image: normal_P1040403.jpg]

A couple of off cuts of steel welded together will do the job

[Image: normal_P1040405.jpg]

The ruff part is then tack welded to the fixture ,, welded were it wont matter ,
[Image: normal_P1040408.jpg]

Now the job can be bolted to the shaper table

[Image: normal_P1040409.jpg]

The faces marked with orange show were i can machine in one go without having to disturb the job ,this means all faces will be
parallel and perpendicular to each other .
[Image: normal_P1040410.jpg]

Also at this fixing the slot and chamfers were machined .
[Image: normal_P1040415.jpg]

Next up the part was unbolted and turned over and fixed to the table with one of the machined faces down , so that the face of the fixture could be skimmed flat.

[Image: normal_P1040420.jpg]

This was done so that the base could be machined , The part was then re fitted to the table .
[Image: normal_P1040431.jpg]

And clocked in on both faces so the base when machined will be square to them ,,, no point having it cock eyed .
[Image: normal_P1040429.jpg]

Forgot to take photo of machine up base :doh: ,,,,see two photos down :palm:,,,,,, the fixture was then de-welded from the job with an angle grinder .

RE: Work holding device - RobWilson - 02-18-2012

Next off to the mill to clean up the edges of the base .

[Image: normal_P1040435.jpg]

And the slots poked in .
[Image: normal_P1040438.jpg]

I was toying with the idea of putting rads on the corners of the base ,,, but being lazy i went for chamfers , so over went the table to 45.
[Image: normal_P1040445.jpg]

Next up the slots ,, the job was repositioned and clocked into the edge .
[Image: normal_P1040460.jpg]

I used a 1012 woodruff cutter to mill the slot .

[Image: normal_P1040461.jpg]

RE: Work holding device - RobWilson - 02-18-2012

Next a bit of a clean up were the clamp will run .

[Image: normal_P1040468.jpg]

And a chamfer on the outer edge ,, sharp edges get damaged easily when knocked .

[Image: normal_P1040477.jpg]

Then i decided to surface grinned the base .

[Image: normal_P1040482.jpg]

Then clean up the top on the mill .

[Image: normal_P1040487.jpg]

this face was also ground .

[Image: normal_P1040491.jpg]

Thats all the machining done to that :) a few money shots .

[Image: normal_P1040541.jpg]

And one next to the Keats for comparison .

[Image: normal_P1040546.jpg]

Suppose i better make the clamps now .

Rob

RE: Work holding device - Highpower - 02-18-2012

Tis a thing of beauty that is. Most impressive Rob.
Having a surface grinder has got to be considered the icing on the cake for most home shop guys.

RE: Work holding device - DaveH - 02-18-2012

Wow Rob,:)

A fabulous piece of work, a spectacular post, super photo's.:):):)

Words actually fail me Big Grin

Superb and thanks for a great post.

DaveH

PS What's with the glitter :huh::huh::huh:

RE: Work holding device - RobWilson - 02-18-2012

(02-18-2012, 02:24 PM)Highpower Wrote: Tis a thing of beauty that is. Most impressive Rob.
Having a surface grinder has got to be considered the icing on the cake for most home shop guys.

Thanks Highpower Big Grin

My surface grinder is a small hand operated machine , not fast at removing material ,,,, but ideal for the home shop metal worker ,, bought it years ago and i would not like to be without it now .

Cheers Rob

RE: Work holding device - RobWilson - 02-18-2012

(02-18-2012, 02:40 PM)DaveH Wrote: Wow Rob,:)

A fabulous piece of work, a spectacular post, super photo's.:):):)

Words actually fail me

Superb and thanks for a great post.

DaveH

PS What's with the glitter :huh::huh::huh:

Thanks Dave Big Grin

Glitter ??????? :huh: ,, in the back ground ,,, thats a rubber mat with bits of other coloured rubber in it ,,, it is packing that goes between very very large rolls of news paper ,,, thought it would be good on the bench to stop things rolling about and to stop finished parts getting marked

Rob

RE: Work holding device - RobWilson - 02-18-2012

And the clamp bars ,,, not so many machining photos this time LOL , the bars were made from 30mm boiler plate .
[Image: normal_P1040559.jpg]

After lots of milling :)
[Image: normal_P1040636.jpg]

There is still a bit of work to do .

Cheers Rob

RE: Work holding device - DaveH - 02-18-2012

Rob,

And it all fits together.

It really is so nice, I wouldn't want to use it Big Grin

So what else is there to be done?

DaveH

RE: Work holding device - EdK - 02-18-2012

Rob,

That's just plain beautiful. I love the finish the shaper gives. I see one of those in my future but first is a bigger mill, then a surface grinder. The list goes on.

Guys, we need to keep this man here so let's be gentle with him. Big Grin