Drilling and tapping combined

Darryl · 2006-10-01T18:49:08+00:00

Hi,I am new to this group and need some good advise.I have a manual Bridgeport type vertical milling machine, and need torun many plastic parts that need to be drilled and tapped with a (1/8 "NTP thread) in the same hole.1) The easy part is that these parts are plastic PVC pipes and theplacement of the holes is not too critical, except that the tappedholes need to be accurate and on the top of the pipe surface.2) Whenever a hole is drilled, I cannot move the position of the roundpipe, and need to tap the thread in exactly the same position as thedrilled hole.3) I have clamped the pipes to a rigid flat 'Vee' fixture which enablesthe pipes to be held in a fixed position and can be easily moved on themachine table.4) Clearly it is not possible to remove the drill and change to mytapping attachment for many thousands of holes.4) Is there a relatively inexpensive manual head or attachment (R8) Ican purchase that will allow me to drill a hole and then swing atapping attachment to the same position without moving the part?Of course this process could be done with a CNC machine, but I am notconsidering buying one for this simple operation.Please can someone give me advise on where a can get such a product, oradvise on what to do?Thanks,Darryl

Oct 01, 2006 20 Replies

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Dave Lyon 20 years ago

Exactly. I bought this machine for a job I did a few years ago. It was faster to use it than a CNC. The job has gone away, so I need to get the drill press out of my way.

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