Delta 17-965 Instruction Manual download pdf (Page 14)

Fig. 25

NOTE: Use drill bits with a shank of 5/8" or less in diameter.

DISCONNECT MACHINE FROM POWER SOURCE.

1. Insert the smooth end of drill bit (A) Fig. 25 in the chuck (B) as far as it will go, and then back the bit out 1/16" (or

up to the flutes for small bits).

2. Center the drill bit (A) Fig. 25 in the chuck (B) before tightening the chuck with the key (C).

3. Turn the chuck key (C) Fig. 25 clockwise to tighten and counterclockwise to loosen the chuck jaws.

4. Tighten all three chuck jaws to secure the drill bit sufficiently to prevent slipping.

5. Remove the chuck key (C) Fig. 25 from the chuck before starting the drill press. The chuck key (C) is equipped

with a self-ejecting pin (D) which helps minimize the potential for the key to be left in the chuck.

INSTALLING AND REMOVING DRILL BITS

CORRECT DRILLING SPEEDS

Factors that determine the correct speed are 1) the workpiece, 2) the size of the hole, 3) the type of bit or other cutter,

and 4) the quality of cut.

Use the recommended speed for the drill press bit and workpiece.

DRILLING WOOD

Twist drills, usually intended for metal drilling, can also be used for boring holes in wood. However, machine spur bits

are generally preferred for working in wood. These bits cut a flat bottom hole and are designed for removal of wood

chips. Do not use hand bits which have a screw tip. At drill press speeds, they will lift and rotate the workpiece.

For through boring, align the workpiece so that the bit will go through the center hole in the table. Scribe a vertical line

on the front of the column and a matching mark on the table bracket and the drill press head, so that the table and drill

press head can be clamped in the center position at any height.

Feed the workpiece slowly when the bit is close to cutting through the wood to prevent splintering the bottom face.

Use a scrap piece of wood as a base block under the work. This helps to reduce splintering and protects the point of

the bit.

DRILLING METAL

Use clamps to hold the work when drilling metal. The workpiece should never be held in the bare hand. The drill bit

may seize the work at any time, especially when breaking through the stock. If the piece is jerked out of your hand,

you may be injured. The drill bit will be broken if the workpiece strikes the column.

Clamp the workpiece firmly while drilling. Any tilting, twisting, or shifting results not only in a rough hole, but also

increases drill bit breakage. For flat work, lay the workpiece on a wooden base and clamp it firmly against the table to

prevent it from turning. If the workpiece is of irregular shape and cannot lay flat on the table, it should be securely

blocked and clamped.

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Delta 17-965 Instruction Manual Page 14