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Gridless Printed Circuit Board Drilling Machine

IP.com Disclosure Number: IPCOM000034770D
Original Publication Date: 1989-Apr-01
Included in the Prior Art Database: 2005-Jan-27
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Fink, OJ: AUTHOR [+4]

Abstract

A printed circuit board drilling machine is described. This concept reduces inefficiencies associated with machines which employ multiple drill spindles mounted on fixed centers. The drill machine shown in the figure employs multiple drill spindles per drill station with one or more spindles mounted on individually controlled slides. This configuration allows the drilling of more than one hole per drill station at each machine cycle regardless of the product grid system required.

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Gridless Printed Circuit Board Drilling Machine

A printed circuit board drilling machine is described. This concept reduces inefficiencies associated with machines which employ multiple drill spindles mounted on fixed centers. The drill machine shown in the figure employs multiple drill spindles per drill station with one or more spindles mounted on individually controlled slides. This configuration allows the drilling of more than one hole per drill station at each machine cycle regardless of the product grid system required. The machine includes a base (1), a supporting bridge
(2), one or more drilling stations (3) mounted on a servo-driven slide (4), which provides motion in the 'Y' direction, a servo-driven slide (5), which provides motion in the 'X' direction, drill spindles
(6), which rotate the drills and provide motion in the 'Z' direction, servo-driven spindle slides (7) which provide additional and independent motion in the 'X' direction for those spindles mounted outboard on each group of spindles. Slides (4), (5) and (7) are positioned independently under program control. The control for this machine must optimize the drilling and drill bit selection sequence for the following parameters: - 'Y' axis location - Hole sites along 'X' axis at each 'Y' axis location

- Drill bit size required for each hole For a product which requires multiple holes along the 'X' axis for any given 'Y' axis location, the sequence is as follows: - 'Y' slide (4) moves to posi...