Friday, 29 June 2012

Refurbishing my bench vices 52 1/2E

Well here I go again, my vices both are records, one is  52 1/2E the other is also a record 52 1/2 Slightly different in the shape design, but that's all I can see, unless you know different, I 'de be interested to know what the difference is, if any.

I'm refurbishing these now prior to starting my new workbench.



Here they are the one in the foreground Is already stripped apart. It's a straight forward strip, first you knock out the split pin in the end of the turn screw central bar, then remove two small bolt that hold the thumb quick release lever in place and slide it all apart, ready for cleaning and refurbishment.

Most of the cleaning is either old grease someone used in the past, or oil and dried sawdust which over time clogs up the drive threads making it difficult to use your vice but, as seen in the above photo the glide rods are rusted up and this definitely needs cleaning off, it's so when you use the thumb quick release lever to open your vice it will glide out and you don't end up having to tug struggling to pull it out.



Here are all the components cleaned up and lightly sprayed with WD40 to keep the rust off while I spray on the first primer coat to the main framework of this vice.

Primarily the most important part of the vice is the back half of it, the part that bolted under the bench and out of sight and forgotten about, really it's the vices gearbox and should be taken good care of. as seen here. With a refurbishment this is the most important part from here on, the six holes must be bare metal, ie: no oil, grease mucky sawdust and definitely no paint.

How many of you have actually checked on this, especially if it,s been bought second hand probably it's been slapped all over with paint, then and a ton of oil and grease splattered all over to get it to work somewhere near how it should be.

 

Another most important part shown left above here with the aid of two pencils, these are two machined faces where the clutch site snugly between, also to be kept as bare metal, Once these and the holes are all cleaned your now ready to do a partial rebuild. Before you go mad and totally rebuild your vice now assemble it to this stage only.

.

Just place the end spacer bar (blue) on the ends of the glide bars to hold them parallel to each other, do not refit the spacer washer and split pin.

Now leaving the front end of the vice on the bench with your right hand pick up the end with the spacer bar attached to about a thirty 30 angle keeping you left hand out of the way the back half of the vice should now slide smoothly to full length of the glide bars under it's on weight. if it doesn't then more cleaning is still required.

I have use a piece of wood to demo this but as you see the vice has slide the full length under it's own weight without assistants.

At this stage both glide bars and holes are perfect so on to the rebuild of the clutch. The clutch while it's engaged you can only wind the vice in or out by hand, disengaged the clutch using the lever, As you engage the lever it raises the clutch off of the main screw bar allowing you to pull it open, or push closed, when you release the lever the clutch re-engages stopping you pushing or pulling any further.As seen here.

Here  left in the photos shows the screw bar with the clutch sat snugly in the spiral screw, While in this position the clutch is engaged.
Middle the clutch is fully assemble and engaged note the flat bar is horizontal the pencils are showing the amount of metal shown above there points.
 
Here right, I am engaging the lever although it difficult to see in the photo the flat bar is raised on the edge nearest to you, but you can now see extra metal showing above the pencil tips, now the clutch is disengaged, and raised by a good 5 - 6mm, giving the clearance for the spiral thread to allow you to pull open the vice or close it.

 

Ok clutch sat in it's housing with the spiral thread underneath waiting for the main clutch housing to be bolted over it. Right looking straight on the end of the vice here you see the clutch housing bolted on, the end of the flat bar is in the horizontal position (clutch engaged) the left side of the bar is inset into the side of the shaft on the clutch which when the lever is engaged lifts the clutch, disengaging it, but, (NOTE) on the right side a finger of metal that is part of the clutch housing and must be under the flat bar this stops the flat bar from turning downwards thus giving the left side of the bar greater lift to disengage.
 
 



















The assemble of the clutch housing, this is fiddly, bear in mine the lever has to be in about the 2 O clock position when the vice is in it's normal working position, when you move the lever to the 2 0 clock position it's now under pressure from the return spring situated on the rear of the face of the vice.

Now you have to hold that pressure while at the same time as your assembling the clutch housing trying to get it over the clutch shaft and at the same time getting that finger of metal under the flat bar It's difficult it's fiddly but can be done, you may need two pair of hand and it may take several attempt, you will swear at it to get it into the right place and bolted back together, good luck.

Now you can fit the two spacing washer and split pin, your now completed.

Just to prove it does run smoothly, blink and you will miss it. here  There you go, one down one to go.

 It's now painted and finished.




Enjoy. 

Sunday, 17 June 2012

Pillar drill table

Time to get this table finished, I started this back last year, Before I went into hospital in October. Well I'm now back to near  normal as I can get.

First I cut three section of MDF  board to form the base but I'm not sure yet if  I'm going to use the third piece, still pondering a few ideas that I want to try too incorporate into the base.  Anyway hear is the radial arm drill I bought from Axminster  earlier.



First I placed the round cast iron table on top of one layer of the MDF  drew around it and marked all the slots, then drill two hole through the MDF then counter bored them to recessed them to the depth of the  bolt heads and fixed the first layer to the swivel head as seen.

Top layer  I simple screwed  to the bottom layer from underneath, I then  machined in grooves for two tee tracks which I bought  from Rutland along with  a kit of tee bolts and and handles. I  then made the fence  with elongated slots cut into them made from an off cut of Bali, this allows the fence to be tighten and secured at any angle using the drill tip as the centre spot.


My pillar drill is situated  very close to the workshop door that in its self is not a problem  when I'm using the drill, but when it's not in use with the mdf table  attached  it protrudes out into the doors entry space to much  and makes life difficult entering or leaving the workshop. 

I designed this to stay attached to the  circular cast iron table all the times. 

To get over this I simple unlock the table with the lever lock arms as seen on the left, the radial arm can now swing the table to the left at the same time the table swivels in the radial arm itself. as seen in the photo on the right.  I then cut a recess along the back edge of the table to allow it to fold further back ( middle photo).  Shown on the right  tuck away neatly when not in use.

 

This now leaves me pondering, As I mentioned earlier a third layer of  MDF this would be slipped in between the two layer  to incorporate some more ideas that  I want to use with this drill, or to change the design  underneath completely  to give the table much more depth. 

More to follow.

Saturday, 16 June 2012

Axminster modified drill tidy.

Since I bought this drill tidy every time I looked at it. :hmm: to much vacant space left on it which you can only lie things on which sort of defeats the the idea of a drill tidy.


So seeing I'm waiting for my Inverter for this drill to arrive thought it's about time I attacked it and improved on it's holding capacity.



My design is simple, I didn't want to lose it's original design and bit holding capacity so I simple cut two mdf circle to fit the size of the original tray one from 6mm and the other 18mm and screwed them together (no glue) I then cut around the original drill holes. I marked out a couple of semi circle and spaced them out where the new drills will go, but haven't drilled any hole yet just mark there position with a small counter sink, reason being different drill sizes different shaft sizes so I'll drill them as and when I buy new drill bits, I want all bits will have there own storage place,also I want to place the small bit at the front of the semi circle with the taller bits at the back so when you reach in you don't scratch your wrists on the ends of larger sharp drill bits, ouch.

When I buy the new drill bits, I Simple remove the MDF circles and separate the two and drill the hole in the 18mm mdf only, then screw them back together this then forms the bottom of the drill holes with the 6mm base MDF reattached.

Reassemble and mounted on the drill column the mdf is also screwed to the tray base from underneath which has also removed the twist in the plastic tray platform. Plus this idea still has vacant storage space on the front of the disc so if I need to expand I can simple fill that area and I can swivel the hole disc 360 degrees if I prefer to do it that way depending on what bit is required at the time of use. enjoy. Kind regards. hc