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Resumen del manual
This will ease the work of the drill press motor and extend the life of your drill bits. SECURING WORKPIECE TO TABLE: Secure the workpiece to the table or in a vise that is secured to the table before drilling. PROTECTING TABLE: Protect the table by placing the workpiece on scrap wood, or center the location of the hole to be drilled over the pocket in the table when through drilling. Also, make use of the depth stop so that the drill bit goes no deeper than necessary. USING CORRECT SPEEDS: Use the correct speed for the diameter of the drill bit being used and the type of material being drilled. Refer to the Drill Bit Speed Chart on Page 23 to help you choose the correct speed for your application. LARGE DIAMETER BITS: Large diameter drill bits require slower spindle speeds. LUBRICANT: Use some form of lubricant on all materials except wood and cast iron. Refer to Lubrication Suggestions on Page 23 to find the correct lubrication for your application. DRILLING ACCURACY: To prevent drill bit wandering and ensure accurate placement of holes, mark the hole location with a center punch before drilling. Also consider using a center-point drill to start the hole. PLUG/ROSETTE CUTTERS: Plug cutters and rosette cutters are for wood only. 5-FLUTE/2-FLUTE CUTTERS: Use a 5-flute cutter when cutting into plastics, brass, aluminum, and mild steel. A 2-flute cutter can aggressively grab the workpiece and damage the tool if used with materials other than wood. SPADE BITS AND PLASTIC: When drilling plastic with a spade bit, use a spade bit with spurs. HOLE SAWS: When using hole saws, apply firm and even pressure, so the saw teeth contact the surface all at the same time—not at an angle. You can also flip the workpiece and finish drilling from the other side. Acaution Larger bits turning at slower speeds tend to grab the workpiece aggressively. This can result in the operator's hand being pulled into the bit or the workpiece being thrown with great force. Always clamp the workpiece to the table to prevent injuries. SMALL DIAMETER BITS: Smaller diameter drill bits require faster spindle speeds. HARD MATERIAL: The harder the material, (steel vs. wood) the slower the spindle speed. Model G7945/G7946 (Mfg. Since 3/07) -25- Depth Stop To set the spindle return distance: 1. Lower the drill bit. The Model G7945/G7946 has a depth stop that allows you to drill repeated non-through holes to the same depth every time. Depth Stop The depth stop consists of a stud attached to the quill with two hex nuts that can be lowered or raised on the stud so the lower nut (depth nut) hits a stop bracket when the drill bit is lowered. The upper hex nut (jam nut) is then used to tighten against the depth nut to secure it in place so it doesn't move with repeated operations. Figure 22 shows the various components of the depth stop. The return height nut, on the base of the stud, limits the downfeed handle return distance, which is set by how high the nut is placed on the stud. This feature is useful for repetitive drilling motions. Figure 22. Depth stop components. To set the depth stop: 1. Lower the drill bit to the required height. 2. Thread the depth nut down against the stop bracket. 3. Lower the jam nut against the depth nut. 4. Using wrenches, hold the depth nut in place and tighten the jam nut against the depth nut. 2. Thread the return height nut up the stud to the desired height. Note: The scale on the depth stop can be recalibrated if it gets moved or has changed since the factory setting. Refer to Depth Stop Calibration on Page 34 for instructions on how this is done. Table Adjustments The Model G7945 table can be adjusted for height and angle. The G7946 table adds the adjustments of table distance from column and rotation. Table Height 1. Loosen the table bracket clamp bolt (Figure 23). Turn the handle crank to lift or lower the table. 2. Remember to lock the support bracket in place before operating the machine. Figure 23. Table height controls (G7945). -26- Model G7945/G7946 (Mfg. Since 3/07) Table Tilt With the Model G7946, start at Step 1. With the Model G7945 start at Step 2. 1. Turn the locating pin nut (Figure 24), in a clockwise direction. This will draw the locating pin out of the casting. Once loose, pull out the pin and nut, and set them in a safe place until needed. Figure 24. Locating pin and nut (G7946). 2. Loosen the lock bolt (Figure 25) using the included wrench and tilt the table (G7945) or the column support arm (G7946) to the desired angle. Figure 25. Angle adjustment bolt (G7945). 3. Lock in place by tightening the lock bolt. 4. To return the table to its original position, align the holes in the column support arm and the table bracket, insert the locating pin and nut, and gently tap the pin with a hammer. 5. Tighten the nut. Table Rotation (Note: The following steps only apply to the G7946.) 1. Loosen the clamp bolt located under the table 26. Rotate the table the...