Thread: Piper Tapping Chuck

great photos. how do you set the depth ofof the thread

Thanks BT,
I always struggle with planetary gears, are the rpms the same in reverse?

azzrock, I assume you can set the depth with the quill depthstop. Although all the machine tapping I have done was through hole and mostly done free hand.

Stuart

I have not tried to use it to tap a blind hole to a fixed depth. From what I have read, you'd drill the hole over length and tap to the required depth. With the Piper, you could not use the quill stop because the chuck only reverses when the body of the chuck is moved upwards, disengaging the drive lugs. The reverse gear ratio is 2:1.

I had made a short video to show how it functions but for some reason I'm unable to upload it.

BT

Originally Posted by Anorak Bob

With the Piper, you could not use the quill stop because the chuck only reverses when the body of the chuck is moved upwards, disengaging the drive lugs.

But once the quill hits it's stop the tap would continue feeding until the clutch disengaged, then you let go of the quill feed and the reverse clutch engages. Although I'm not sure I would try this with a dog clutch in a blind hole as it would be disengaging and reengaging at maximum torque(even if it is only a 65% thread). The disengaging wouldn't to the clutch any good, the reengaging wouldn't do the tap any good.

Stuart