KustomKB,
Thanks for looking in
and thanks for the suggestion about the camera, I have a tripod for my flip video, it will fit in the digital still camera too, about the "sim" project, it is on hold for now, I am done with all the model engineering aspect of it, (machining, and mechanical design).
But I will work on it later on, which will be making a light weight (maybe balsa wood) structure for it, as the photo shows, it will be a project of model design and building, like those old stick model airtplanes, we used to build back in years yonder...
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Today I wanted to work on this part of the vice, it is the locking nut housing with a rib connecting to a zero adjustment bolt flange.
I sketched out the relevant positions on the workpiece.
Now I began to take some dimensions, such as the length between the housing and the flange
I'll start by taking the depth of cut needed from the backside of the nut housing to the backside of the adjustment bolt flange.
And by taking a 1" diameter round rod (alumminum) and chucking it into my 5C collet spin jig.
I transfer these dimensions to the workpiece.
Touch off and set the 'Z' axis to final depth of cut, on the backside of the workpiece.
Using the backside as a zero reference, on the spin jig.
I now cut to the bolt flange
that would be this area here on the model base.
which is this area here on the original subject.
the back side milled to the flange
Now that the backside is milled flat, I want to machine a flat bottom, to know how much to machine off I guage the width of the nut housing block from the previous machuined back section to the front, this will determine how far into the round bar I need to machine to get this width cut.
To machune the bottom I turn the spin jig 90* backwards or at the 270* mark shown on the jig.
Now the backside is facing the front, so the bottom side is ontop, ready for machining.
Now with my guage set to the width of the nut housing, from previous measurement, I can now mark the front side of the workpiece using the dividers referenced off the back edge, (which is now at the fromt in this photo), by making a mark, like this
it establishes the width of the nut housing, as well as the depth of cut needed to attain that width
.
So now I can set the depth of cut to this mark.
And machine away the material needed to establish the bottom section.
Now to recap,
I set the jig to 270*
to machine the bottom side,
I set the jig to 0*
to machine the back side.
I set the jig to 90*
to machine the top side
and set the jig to 180*
to machine the front side.
Now I spin the jig so that the front side is ontop .
so it can be machined to final width in dimensioin
which will end up here on the model
Now I need to secure the heigth dimension of the nut housing
and transfer that dim. to the workpiece
set the depthstop to that mark
and machine away the material to bring the top height in.
that is this area here (the heigth dimension) on the original.
Now I establish the length of the nut housing and transfer that dimension to the workpiece
that mark will be the start of the machining of the connecting rib shown here on the original
I need to get another dimension, and that is to scale down this width of the rib, on the original
transfer the last two dimensions to the workpiece, this will establish the heigth, length and width of this rib feature.
Now to make the start position of this rib, I take a little at a time on the 'Y' axis and using an endmill, I drive the 'Z' axis into the workpiece, about 50 thou. of 'Y' travel for each plunge of 'Z'
Then work the 'X' axis across to make the entire rib length. This is the front of the rib section being machined out.
Now that plunge cut at the nut housing intersection, left a rounded interior edge, so the nice thing about a spinjig setup, is I can rotate the jig to make this side be ontop so as to machine that rounded edge to a square corner.
Did I mention, I like to use my spin jig, for complicated workpieces like this.
Rather than a vice. When facets need to be machined on 2 or more sides.
likje this
now the top of the rib machined to final heigth.
looking at the original, the zero adj. bolt flange is at the same heigth as the top of the rib
So I'll take a transfer measurment of the length of this whole section
and transfer that as a mark on the workpiece
as well as the final distasnce between the nut housing and bolt flange
and transfer that mark on here
and now the finish dimensional milling to bring everything into specs.
done to this point
Now machine the end to finished length,
to temporarily c heck for finish fit in the model
Next will be some filling and profile work on this piece, then probably work on the rest of the base, and work my way up to the top section, all the lathe work I'll save for last.
Have a great day..