Need Help!- how to check the center of insert ?

[pit202]

Hi all,

I have the feeling my end of the insert is a little higher as the center of the spindle , if I do planing(?) my front surface it crash the end of the insert.

How to check if tools are in center ? Is there a way to correct this in VDI turret ?

__
Piter

[fourcylthrill]

To check turret centerline cut a piece of material, so it's running true with the spindle, and clamp a .0001" level style indicator onto that od with a hose clamp or something similar. Put your best condition boring bar holder in one of the positions and set it to centerline. Move that holder to X0. and run the indicator around the ID of the boring bar holder. Zero the indicator at the top of the holder. Spin the turret 180 degrees. Any run out will be how far your turret is off center height.

I have the procedure for realigning the turret documented. Unfortunately it's at the shop. You have to barely loosen the 10 or so bolts on the turret and pry the thing around until it runs true. There are also some parameters that need to be changed if the X0. changes when you unbolt it. Don't know that part right off hand. I'll post it Monday if you need it.

[pit202]

I`ll check this, this is a new machine , but never knows

[mach3water]

Hi all,

I have the feeling my end of the insert is a little higher as the center of the spindle , if I do planing(?) my front surface it crash the end of the insert.

How to check if tools are in center ? Is there a way to correct this in VDI turret

Hope this helps, take a piece of steel and face it with that insert(The shinnier the surface the better), then stop your spindle and orientate it to 0Deg. Lock it into place, then bring the insert to the face and lightly scratch it using the tool as a scribe and jogging in the x axis. Draw an arrow on the face with a marker wich way is up (very important). After it is marked turn the O.D. slighty and then cut your sample off. From there take it to an optical comparitor, turn on the reflective light and place the scribed side so you can see it and make sure the arrow on your part is facing up. Measure your distance from the top of the scribe line to the centerline of the part. what ever the distance is, shim up your tool or surface grind the holder to bring it down. Only grind or shim if your machines location is not eccentric adjustable.

[pit202]

today i`ve checked the center with a ID tool holder and dial indicator , and when I done averything correctly my turret is 0.15mm out of center ( 0.0059 in ) machine is under warranty so I called the service. thanks for replay.

[cam1]

Hi: I like to take a facing cut, starting with the tool set low. I then adjsut it up until it takes of the material in the center.It's a simple but effective method.

regards

[pit202]

today was the service man and readjusted the tool turret an about 0,1mm , now are all the central points of the turret in 0,03mm , will see if this helps.