Tapping apparatus

Details Tapping apparatus Tapping apparatus

1988-07-08

1990-03-27

Howell, Daniel

Cutting by use of rotating axially moving tool

Means to drive tool

Including means to move tool along tool-axis

10135R, 10141H, 408138, B23G 116, B23B 4700

Patent

active

049115880

ABSTRACT:
A tapping apparatus in accordance with this invention includes a frame, a spindle mounted on the frame for rotation and axial movement and provided with a tap coupled to one end thereof, the spindle being driven by a driven source, an external thread section formed in the outer periphery of the spindle, a guide member rotatably mounted on the frame and having an internal thread section formed in the inner periphery thereof, the internal thread section being threadably engaged with the external thread section, and a synchronous rotation mechanism for rotatably driving the guide member in synchronization with the spindle so that the axial movement of the spindle agrees with a pitch of the tap.

REFERENCES:
patent: 2796767 (1957-06-01), Carpenter
patent: 3126766 (1964-03-01), Bent
patent: 3640147 (1972-02-01), Fantoni
patent: 4050835 (1977-09-01), Womack
patent: 4115025 (1978-09-01), Petroff

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