Jones and Shipman CNC grinder maintenance

[Spark plug]

At work I'm Being given an increasing amount of maintenance work, witch I'm very pleased about because I enjoy tinkering.

I have a fleet of 8 Jones and Shipman CNC grinders to look at with a wide range of faults and I'm becoming a little unstuck.

Was wondering if anyone has any experience with Jones and Shipman equipment?

 

[awemawson]

Well I have a couple of J&S grinders (540 & 1300 ) but sadly no CNC ones

Now if you get fed up with them I'll come along with my trailer and collect one

Andrew

 

[Lawnmowerboy]

I have done a bit on them (we have 2) I'm still getting to grips with them. What faults I particular?

 

[Spark plug]

The fault that worries me the most is with one of the 4 axis ones the head unexpectedly dropes during a job, the. Drive belt and ball screw seem ok, the motor is ok it just unexpectedly happens now and again.

Other than that it's mainly hydraulic issues beeing slow or weak witch I expected to be oil and filters but I changed these with no success. Next thing is to start going through the pumps and valves.

 

[madkayaker]

They look a serious bit of kit. Do the manufactures run training courses on maintenance? Expensive kit to bust I bet

 

[Spark plug]

They look a serious bit of kit. Do the manufactures run training courses on maintenance? Expensive kit to bust I bet

It's not just the machines that I'm worried about but also he solid carbide components and the diamond grinding wheels.

I will look in to training cources.

 

[Lawnmowerboy]

There is a radial load sensor for each screw and motor which is basically meant to stop it having a knock if you see what I mean. Same as all nc lathes and mills. Could be a likely suspect. It forgets where it is and jumps thinking it's having an accident. Not so sure about the hydraulics. Robotstar will have more of an idea of what's what on the nc side of it.

 

[Robotstar5]

Robotstar will have more of an idea of what's what on the nc side of it.

Sorry, never had anything to do with NC machines, most robots tend to monitor movements via the feedback encoder and any un-commanded movement ( axis moves unexpectedly) tends to result in a shutdown until the cause is corrected.

 

[Lawnmowerboy]

Fair enough my bad!!

 

[Welderpaul]

Your employer should give you the right training to be able to service them...otherwise if you do knack it up it's his fault really.

 

[Spark plug]

Your employer should give you the right training to be able to service them...otherwise if you do knack it up it's his fault really.

We'll I think he knows that but the machines are quite old and have been left in a bad way by the last two part swappers, oops I mean maintenance men.

 

[Lawnmowerboy]

What operating system are yours on amours are fanuc osf-d2 or three I think

 

[Spark plug]

What operating system are yours on amours are fanuc osf-d2 or three I think

Not sure off the top of my head lie have to Check, lie probably be having a play tomorrow unless the bearings have came in for a gearbox I have in bits.