Assessments - 3, GPA: 4.7
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Facilidade de uso
ADJUSTING SPINDLE RETURN SPRING The spindle will automatically return to its upper-most position when the handle is released. Allow the handle to return slowly to the top position after each hole has been drilled. This spindle-return spring was adjusted at the factory. However, to adjust (if necessary): Disconnect the machine from the power source! 1. Loosen the nuts (B) and (E) Fig. 30. Make sure that the spring housing (A) stays engaged with the head casting. 2. FIRMLY HOLD the spring housing (A) Fig. 31, pull it out, and rotate it until the boss (D) is engaged with the next notch in the housing. Turn the housing counter-clockwise to increase or clockwise to decrease the spring tension. Turn the nut (E) until it contacts the spring housing (A), then back the nut (E) out 1/4 turn. Tighten the nut (B) against the nut (E) to hold the housing in place. IMPORTANT: Do not allow the inside nut (E) to contact the spring housing (A). A E F F C B D Fig. 28B B D B B Fig. 29 B A E B E D A Fig. 30 Fig. 31 18 MACHINE USE NOTE: Use bits with this drill press that have a shank of 5/8" or less in diameter. NOTE: Use scrap material for practice to get a feel of the machine before attempting regular work. RISK OF UNSAFE OPERATION. The use of accessories and attachments not recommended by Delta may result in risk of injury. IMPORTANT: If the workpiece is long enough, position it with one end against the left side of the column (Fig. 32). This action prevents the workpiece from rotating with the drill bit or cutting tool, causing damage to the workpiece or injury to you. If it is not possible to support the workpiece against the column, fasten it to the table using clamps or a vise. INSTALLING AND REMOVING DRILL BITS Disconnect the machine from the power source! 1. Insert smooth end of drill bit (A) Fig. 33, into 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. Make certain that the drill bit (A) Fig. 33, is centered in the chuck (B) before tightening the chuck with the key (C). 3. Turn the chuck key (C) Fig. 33, clockwise to tighten and counter-clockwise to loosen the chuck jaws. 4. Tighten all three chuck jaws to secure the drill bit sufficiently so that it does not slip while drilling. 5. RISK OF FLYING OBJECTS. Don't tether the chuck key to the tool. The cord could get tangled and chuck key could be thrown at user or tool could be damaged. Also, make sure that the chuck key (C) Fig. 33, is removed from chuck before starting drill press. Your chuck key (C) is equipped with a self-ejecting pin (D) which helps minimize the hazard of the key being left in the chuck. B A D C Fig. 32 Fig. 33 CORRECT DRILLING SPEEDS Factors that determine the best drilling speed 1) the workpiece, 2) the size of the hole to be drilled, 3) the type of drill or other cutter, and 4) the quality of cut. RISK OF UNSAFE OPERATION. Use the recommended speed for the drill press bit and workpiece material. DRILLING WOOD Twist drills, although intended for metal drilling, may be used for boring holes in wood. However, machine spur bits are generally preferred for working in wood. These bits cut cut a flat-bottom hole and are designed for removal of wood chips. Do not use hand bits that have a screw tip. At drill press speeds, they turn too rapidly and will lift the work and spin it. For through boring, align the table so that the bit will enter the center hole to avoid damage to 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. When the bit is about to cut through the workpiece, feed it slowly to prevent spintering the bottom face. To help protect the bit and reduce splintering, a wooden insert is included in the table. Alternately, you can use a scrap piece of wood as a base block under the work. 19 DRILLING METAL Use clamps to hold the workpiece. DO NOT try to hold the workpiece with your hand. The drill bit may seize the work at any time and spin, causing damage to the machine and/or injury to you. The drill bit will break if the workpiece strikes the column. Clamp the workpiece firmly. Tilting, twisting, or shifting will result in a rough hole and drill bit breakage. For flat work, lay the workpiece on a wooden base and clamp it firmly against the table. If the workpiece is of irregular shape and cannot lie flat on the table, make sure that you clamp it securely. REMOVING SPINDLE ADAPTER The spindle adapter and chuck can be removed for the purpose of using shanks with a #2 morse taper. Disconnect the machine from the power source! 1. Align the slot in the quill (A) Fig. 34 with the slot in the spindle (B). 2. Insert the drift key (C) Fig. 35 through the slot in the quill and the slot in the spindle. 3. Tap the drift key (C) Fig. 35 with a hammer until the the spindle adapter and chuck fall from the quill. B A C Fig. 34 Fig. 35 TRO...