Re:CHNC-1 Retrofit & Upgrades

thanks rob


My lathe does have the parts catcher and the air powered parting tool as well as the octagon shaped turret


It appears that all of the air valves are electrically actuated so I am not sure weather all of the air components are even working


it would probably be a good idea to make sure all of this equipment works before attempting a retrofit? Wouldn't you think?



Bob

well in turth i pulled all mine out and replaced with new valves only as some of the macy ones had died before and here u can not buy them so i went with something off the shelf in UK.
as i had some already replaced when it was on old control i just wanted to tidy it all up etc...

most are 110V but afew are 24V i think turret up and turret lockpin/cousin are 24v ones

hardinge manuals dont give u too much info on CHNC so its abit of a figure it out as you go.
forthe HNC iv not chceked the manual

rob

Hey rob any chance you may have some pics of the air control section of the lathe

I would like to get a look at what you did, I think I will have plenty of air to run this thing providing I

get all of the leaks repaired I have a 125 gallon air compressor that puts out about 70-90 cfm


hopefully that will be enough.


Thanks



Bob

i iwll have a look i might have to snap afew when i have a moment tho


yea we have a large compressure like that if u have no leaks or can stop the closer leaking ull be ok..
but find piston is always on,
so we have a hydrovane compressor which easy keeps up with it we stick one,.. but we have alot of other things on in shop too , a bunch of mills and laths

That would be great thanks I think i will disconnect the outlet line on each component to

figure out exactly what goes to what, ie collet closer parts catcher part off ect.


I will keep all posted on the progress, getting new camera this weekend so lots of pics to come next week.


thanks all


Bob

Hey john


is the collet closer like a cnc mill with an ATC it vents air when changing tools or is there something I should know

I.e would it be worthwhile to replace the whole thing with a Dorian and hook it up to the solenoid

or is there a chance that I can still get a rebuild kit for mine?



Thanks



bob

bobinater wrote:

Hey john


is the collet closer like a cnc mill with an ATC it vents air when changing tools or is there something I should know

I.e would it be worthwhile to replace the whole thing with a Dorian and hook it up to the solenoid

or is there a chance that I can still get a rebuild kit for mine?



Thanks



bob

the way CHNC one works and HNC
is so when u loose air u still have air in the closer and u still grip onto that part in the collet or chuck as spindle dont stop right away on air or power loss

on most mills air or hydrolic is air or hydrolic on to push cylinder down.. and they have belleville washers inside ram to push them back up and hold onto the pull stud. which keeps tool in on power loss etc...

mine does not leak on the cylidner part that is perfect
where it does leak is on the bit that directs the air into the cylinder unit..
has two bearings in it.. and two pipes on bottom..

this directs air down to vent holes in draw tube if u like.
mine leaks out the bearings.. u cant make them a good fit or it will just bind and run up give big problems and brake something.. has to leak by design.

this is why we are looking to replace it with a hydrolic closer kitagawa make units for this
www.kitagawaeurope.com/hydraulic-cylinders/

rob

John


we have a dorian collet closer on out Haas tool room lathe and we run it off of the coollant relay instead of coolant with an m08 & m09

we get collet open or close with either command, did not mean to not make sense but the dorian air closer might not work on the hnc

because it would not allow for bar stock to be fed from the through hole on the head stock



Bob