Dear Experts
Hope you are all fine and safe
We are facing tool unclamp issue, please fine below our actions and observations for your advice
- Toll does not get unclamped for full stroke hence unclamp input does not get ON but if we apply emergency & switch ON control after releasing Emergency then only for the first time, unclamp works perfectly alright for full stroke but later on unclamp stops almost at same place again and again - this observation is repeatative
- Hydraulic oil level and condition good
- Replaced valve with another machine - no effect
- Replaced complete set of Motor, Hydraulic oil tank and Solenoid valve with another running machine - no effect
- One more observation is that collet does get connected with drawbar with little difficulty unlike other machines
- Added 1.5mm spacer to improve knock out but to no avail
- Motor is getting heated up that means getting overloaded
Please advice if return line of oil is getting clogged somewhere & thereby not allowing unclamp for full stroke, if yes, how do we move ahead because we have opened
concerned pipe and checked for any clogging etc did not find anything
Based on the above, request your feedback to ascertain reason due to which every time if we apply emergency & switch ON control after releasing Emergency then only for the first time, unclamp works perfectly alright for full stroke but later on unclamp stops almost at same place again and again - do u also suspect drawbar movement getting obstructed somewhere?
Regards