Portable adjustable multiple end drill device

An end drill device, comprising:

• a restraint device for holding a rotary power source;
• a main end drill unit communicating with the power source via a first transmission shaft;
• a plurality of auxiliary end drill units communicating with the main end drill unit via a second transmission shaft;
• a pair of guide bars for holding the main end drill unit and the auxiliary end drill units, wherein the auxiliary end drill units are moveable on the guide bars and a position of each of the auxiliary end drill units relative to the main end drill unit is independently adjustable;
• and
• a bearing device for rotating the guide bars, the main end drill unit and the auxiliary end drill units relative to the power source.

A method for assembling an end drill device comprising the steps of:

• sliding a main end drill unit and a plurality auxiliary end drill units over first and second guide bars;
• displacing fasteners for the main end drill unit and the auxiliary end drill units to allow the first and second guide bars to be slid through the end drill units without interference from a respective restraining slab;
• securing the main end drill unit to the first and second guide bars by tightening the fasteners against the first and second guide bars once viewing window dials of the main end drill unit are aligned with a zeroth calibration of either or both of the first and second guide bars and indentations of both of the first and second guide bars are aligned with the restraining slab;
• aligning an auxiliary end drill unit at a metrically designated location along at least one of the first and second guide bars by aligning one of the viewing window dials of the auxiliary end drill unit with a particular calibration corresponding to the particular metrically designated location;
• securing the auxiliary end drill units to the first and second guide bars by tightening fasteners;
• inserting a splined power transmission shaft in an internally splined cavity of each of the end drill units once all of the end drill units to be employed have been secured to the first and second guide bars;
• inserting the first and second guide bars in latch recesses of end-caps;
• securing the first and second guide bars to end-caps;
• inserting the splined power transmission shaft in a bearing of each of the end-caps;
• securing a rotary power source to an input shaft of the main end drill unit;
• securing a rotary power source to restraints for the rotary power source;
• rotating the end drill device to various angles with respect to the rotary power source;
• securing drill bits to a respective the drill/fastener base of a respective end drill unit;
• providing a plate for the drill bits, wherein each plate includes slots which are aligned with rigid tabs formed on a drill/fastener base, wherein the plate is pressed flush against the drill/fastener base;
• simultaneously rotating the drill bit while pressing against the base such that through holes formed in the base align with spring-loaded detents in the base, allowing each of the detents to emerge through its corresponding hole due to the force from its respective attached spring to secure the drill bit in place and preventing unwanted rotation of the drill bit;
• securing fastener bits and/or drill bits to the main end drill unit and/or the auxiliary end drill units;
• and
• removing the end-caps from the first and second guide bars and the splined power transmission shaft to add or remove end drill units.