Maintenance And Cleaning - F.F. Group DPB 16 PLUS Original Instructions Manual

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Table Of Contents

Table of Contents

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Adjusting the spindle return spring (Fig. 16):

It may be necessary to adjust the spindle return

spring because its tension has changed and the

spindle moves back too quickly or too slowly. To

do so:

1. Lower the table for more work space.

2. Work on the left side of the drill.

3. Insert a screwdriver into the lower front groove

(1) and hold it.

4. Remove the outer nut (3) with a wrench.

5. With the screwdriver still in the nut, loosen the

inner nut (4) until the notch detaches from the

hub (6).

WARNING:

Spring is under tension.

6. Carefully turn the spring cap (2) counterclock-

wise with the screwdriver until you can press

the nut (1) into the hub (6).

7. Lower the spindle to the lowest position

and hold the spring cap (2) in position. When

the spindle moves up and down as you wish,

tighten the inner nut (4) again.

8. If it's too loose, repeat steps 3-5. If it's too

tight, reverse the step 6.

9. Secure the outer nut (3) against the inner

nut (4) with an open-ended wrench.

NOTE:

Do not tighten excessively and do not restrict the

movement of the spindle.

The axial operation of the spindle (Fig. 17):

When the spindle is in the lower position, turn it

by hand. If you find that the operation is too big,

proceed as follows:

1. Loosen the lock nut (19).

2. Turn the screw clockwise (20), to balance the

operation, without interfering with the up and

down movement of the spindle (a little opera-

tion is normal).

3. Tighten the lock nut (19) again.

Positioning the work piece:

As a general rule, use a machine vice or another

suitable clamping device to secure a work piece in

position. Never hold the work piece in place with

your hand. When drilling, the work piece should

be able to travel on the drill table for self-center-

ing purposes. Ensure that the work piece cannot

rotate. This is best achieved by placing the work

piece /machine vice on a sturdy block.

NOTE:

Sheet metal parts must be clamped in to prevent

them from being torn up. Properly set the height and

angle of the drill table for each work piece. There

must be enough distance between the upper edge

of the work piece and the tip of the drill bit.

NOTE:

Place a piece of backup material (e.g. wood) on the

table underneath the work piece. This will prevent

splitting or making a heavy burr on the underside of

the work pieces as the drill bit breaks through.

WARNING:

To keep the backup material from spinning out of

control it must contact the left side of the column

as illustrated. If the work piece or the backup mate-

DPB 16/12 PLUS | DPF 16/12 PLUS

rial is not long enough to reach the column, clamp

them to the table. Failure to do this could result in

personal injury.

NOTE:

For small pieces that cannot be clamped to the ta-

ble, use a drill press vise (optional accessory). The

vice must be clamped or bolted to the table to avoid

injury from spinning or breakage.

Choosing speed:

Ensure that you drill at the proper speed. Drill

speed is dependent on the diameter of the drill

bit and the material in question.

The table below acts as a guide for selecting the

proper speed for various materials:

Drill

Cast

Steel Iron

bit ø

iron

2.550

1.600 2.230

1.900

1.200 1.680

1.530

955

1.270

800

1.090

680

960

600

850

530

765

480

700

435

640

400

590

370

545

340

480

300

425

265

380

240

350

220

305

190

NOTE:

The drill speeds specified above are merely suggest-

ed values.

Countersinking and center-drilling:

With this table drill, you can also countersink and

center-drill. Please observe that countersinking

should be performed at the lowest speed, while a

high speed is required for center-drilling.