Serrated bar with slot - where to find?

Zahnrad Kopf · Feb 27, 2018

I know I have seen these in the past but am not recalling where or what their proper name was. Hoping someone here does. It is what amounts to basically a piece of bar stock that has serrations along one face and a slot or even a t-slot along the length of it. Looking to make some fixturing/work holding and trying to speed the process by purchasing this detail if possible.

I have checked Reid, McMaster, etc... even Amazon. No love. Likely due simply not knowing the proper nomenclature. Ideally, looking for bar approximately 1”-1.5” x 0.75”-1” x 4” long.

Anyone know, or know where to find it?

Thanks.

Street · Feb 27, 2018

do you mean milling machine clamp Kit?

Here is this what your looking for?

milling clamp kit | eBay

The end of the clamp has serrated teeth so you can adjust the height of the clamp using the mating part in the kit, the slot is for placement of the draw down bolt.

Garwood · Feb 27, 2018

Like serrated lathe chuck jaws?

steve45 · Feb 28, 2018

Like a keyway broach?

Zahnrad Kopf · Feb 28, 2018

No. Not like a key way broach, not hold down block. Like a locking plate. Just basically a piece of rectangular bar stock with a t-slot down its length and serrations on the top face which happen to be at right angle to said t-slot. I’ll model something quickly and post it in a bit.

Mud · Feb 28, 2018

Like this?

I have some extras of these.

63131-na-bikers-choice-primary-chain-adjuster-plate-kit-for-harley-davidson-big-twin_1000_1000.jpg

Zahnrad Kopf · Feb 28, 2018

Very similar, Mud. Thanks. Like the attached pic. The slot can straight, or even something different. I can always murdify that part. But finding the block would be nice.

Mud · Feb 28, 2018

That looks like a Kitagawa master jaw. I've never seen a stock part like that, was wishing for it at one time.

Bill in PA · Feb 28, 2018

CNC bar pullers have a bar like that:

Royal Compact CNC Bar Pullers

Maybe Royal will sell just the replacement bar or knows of a source for it?

Bill

Zahnrad Kopf · Feb 28, 2018

Bill in PA said:
CNC bar pullers have a bar like that:
Royal Compact CNC Bar Pullers
Maybe Royal will sell just the replacement bar or knows of a source for it?
Bill

Hi Bill,

You are smarter than I look. No... wait... Nevermind... You are correct, Sir. The thing is that Royal wants $795 for that puller, and half that for just the bar. Meanwhile, there are guys/companies making the exact same affair for $300, complete. No one wants to talk about the serrated blocks for knowing why people are asking. Hence, the search.

Guess I'll just have to wire up what I want and do other paying things in the turning and machining centers while it runs.

Thanks!

DDoug · Feb 28, 2018

"Unistrut with serrations".... :skep:

Only stronger, and more accurate.

Me likey

Bill in PA · Feb 28, 2018

Zahnrad Kopf said:
Hi Bill,

You are smarter than I look. No... wait... Nevermind... You are correct, Sir. The thing is that Royal wants $795 for that puller, and half that for just the bar. Meanwhile, there are guys/companies making the exact same affair for $300, complete. No one wants to talk about the serrated blocks for knowing why people are asking. Hence, the search.

Guess I'll just have to wire up what I want and do other paying things in the turning and machining centers while it runs.

Thanks!

Do you have a gear shop local? Might be able to make up a couple of serrated "racks" and you mill slot and cut to length.

Bill

Bobw · Feb 28, 2018

Zahnrad Kopf said:
Guess I'll just have to wire up what I want and do other paying things in the turning and machining centers while it runs.

Thanks!

Basic lathe jaw type serrations? If 60's, stand it up at a 60 and blast it with a dovetail cutter.
For 90's that my lathe takes I have a soft jaw that will hold any stock at a 45, and then I blast it
with a square corner endmill. I can do a 4" long, 1.5" wide jaw with .0625 spacing in about 2 minutes.

Zahnrad Kopf · Feb 28, 2018

Bill in PA said:
Do you have a gear shop local? Might be able to make up a couple of serrated "racks" and you mill slot and cut to length.
Bill

LOL! Sorry. Had to chuckle at that one.
Still, despite milling racks from Blue Moon to Blue Moon ( not nearly as common as it used to be ) for whatever reason, I just don't have a serration mill on hand at the moment. Plus, see below...

Bobw said:
Basic lathe jaw type serrations? If 60's, stand it up at a 60 and blast it with a dovetail cutter. For 90's that my lathe takes I have a soft jaw that will hold any stock at a 45, and then I blast it with a square corner endmill. I can do a 4" long, 1.5" wide jaw with .0625 spacing in about 2 minutes.

I do have to positively agree with you, but in this case it's not a matter of skillfulness. It's a matter of timing. Kind of buried at the moment, and I need to keep the machining center and turning center fed while also running the gear making machines. It's easier to throw it in the WEDM and let it run while I stay productive, making money.

And THAT is the root of my wishing to purchase one.

Thanks, boys. Appreciate the time and input.

Limy Sami · Feb 28, 2018

Bobw said:
Basic lathe jaw type serrations? If 60's, stand it up at a 60 and blast it with a dovetail cutter.
For 90's that my lathe takes I have a soft jaw that will hold any stock at a 45, and then I blast it
with a square corner endmill. I can do a 4" long, 1.5" wide jaw with .0625 spacing in about 2 minutes.

Bob FYI 90 deg x 1/16 jaws (page 7 and on - needs a look) http://www.thame-eng.com/wp-content/uploads/2017/02/serrated-soft-top-jaws.pdf

Bobw · Feb 28, 2018

Limy Sami said:
Bob FYI 90 deg x 1/16 jaws (page 7 and on - needs a look) http://www.thame-eng.com/wp-content/uploads/2017/02/serrated-soft-top-jaws.pdf

Cool.. Looks like the SIZE I need is there.. I was never able to find it anywhere..
And they have what appears to be jaws for every chuck known to man, EXCEPT for my chuck..
It just doesn't exist, except for on MY machine.. Even the manufacturer won't admit
it exists.

Thanx.. Do you know how their pricing is??

Limy Sami · Feb 28, 2018

Bob, I rate them as ''fair to not bad'' but the UK is usually dearer than the US??? ......no direct price from Thame that I could find, but I ''know'' this outfits stock is Thame - click on a slot width ;- Rotagrip - Imperial Serrations

FWIW I'd be very very surprised if neither outfit ships to the US

......and both have always been helpful to me

adamm · Feb 28, 2018

Schunk has their KSM series. Not sure if that is overkill for your application. Based on other Schunk pricing, it is probably not cheap.

https://schunk.com/ca_en/clamping-technology/series/ksm2/

Kurt also has their SeraLock pallets. Double T-Slots, but might work. Serrated Pallet, Single Row Block, 12"

Danny VanVoorn · Feb 28, 2018

Carr Lane may have it or someone like J&S that make those dove tail clamps, some with serrations and some without on the bottom? Seems like the bar would compliment those, one could make a low profile vise/fixture with a pair of the bars mounted and four of the clamps.
Dan

twin staged · Feb 28, 2018

Could you modify your design to use off the shelf gear rack? Probably defeats the purpose of saving time and buying it.

Serrated bar with slot - where to find?

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