Wilton 8201 Instrukcja Użytkownika Pobierz pdf (Strona 2)

Choosing the Correct Blade Length

If the Operator’s Manual for your band saw does not

specify the proper blade length, use the following

procedure to determine the blade length:

1. Fix pulleys or wheels in working position.

2. Determine distance from center of hub on upper

and lower wheels (C).

3. Determine radius of the upper and of the

lower wheel.

4. Apply the following formula:

(R1 x 3.1416) + (R2 x 3.146) + (2 x C) = length.

Installing your Band Saw Blade

1. Unplug the saw, then loosen the tension on the

upper wheel. With all the blade guides backed off,

slip the new blade around the wheels and then

tension it.

2. When you have tensioned the blade enough to

keep it on the wheels, track it by turning the upper

wheel with one hand while adjusting the tilt

of the wheel's axis with the other hand. The blade

should ride in the middle of the rim.

Never track the blade with the motor running

and the cover open.

3. Next, adjust the blade guides; first the thrust

bearings: upper and lower, then the left had

side guides.

Tips

for all Band Saw Blades

OLSON

12.Premature Loss of Set

• Improper width selection – check chart for

correct width for radius cutting.

• Reduce band velocity.

13.Band Develops

Positive Camber

• Decrease force.

• Use a coarser pitch to

increase tooth penetration.

• Adjust saw guides closer to work.

14.Band Develops Twist

• Wrong width for radius being cut – choose a

narrower blade.

• Binding in cut – decrease feed pressure.

• Decrease

band tension.

• Adjust saw

guides further from workpiece.

15.Finished Cut Surface Too Rough

• Improper tooth selection

– choose a finer pitch.

• Increase band velocity.

• Decrease feed rate.

16.Band Scoring

(side wear or grooving)

• Check for wear on saw

guide inserts.

• Too much pressure on

saw guide inserts.

• Check alignment of saw guides – be sure they

are square to front vise. Replace or clean guides.

17.Burring or Mushrooming of

Blade Back Edge

• Increase tension and adjust guides.

• Check contact between blade and back

edge rollers.

• Reduce feed pressure.

• Use coarser pitch blade.

• Use finishing stone.

Diagnosing Problems

1.Premature and Excessive

Tooth Wear

• Feed pressure too light,

increase it.

• Lower band velocity.

• Improper tooth selection,

use a finer pitch.

• Improper break-in with

new band. Velocity and

feeding should be reduced the first few cuts.

• Teeth are running the wrong direction. Be sure

teeth are pointing in proper direction.

• Incorrect saw guide insert size for the band,

allowing them to strike teeth

2.Blade Vibration

• Increase or decrease band velocity.

• Increase tension of band.

• Teeth too coarse for workpiece.

• Increase feed pressure.

• Material not securely held.

3.Gullets Loading

• Teeth too fine for workpiece - use a coarser pitch.

• Decrease band velocity.

4.Band Stalls in Work

• Feed pressure too great - decrease feed.

• Teeth too coarse, use finer tooth blade

5.Premature Blade

eakage

• Thickness of blade too heavy

for diameter of wheels

and speed of machine

• Increase or decrease velocity

• Check wheels for defects

• Teeth too coarse for workpiece –use a finer pitch

• Decrease blade tension

• Decrease feeding force

• Brittle weld – increase annealing period, decreasing

heat gradually

• Check for proper adjustment of band guides, saw

guides, saw guide inserts and back-up bearings.

6.Blade Making Belly-Shaped Cuts

• Increase tension.

• Adjust guides closer

to workpiece.

• Teeth too fine – use a

coarse pitch.

• Decrease feed force.

• Teeth dull.

7.Tooth Strippage

• Teeth too coarse

for workpiece.

• Material not securely held.

• Too much feed pressure

–reduce for good chip curl.

• Band velocity too low –

increase speed.

8.Band Develops a Negative Camber

• Band is riding on saw

guide backup bearing too

heavily. Adjust band for

alignment on top and

bottom wheels.

• Check band wheel alignment.

9.Blade Not Running True Against

Saw Guide Backup Bearing

• If clicking noise against saw guide backup

bearing, remove burr on band.

• Check band wheel alignment.

• Check saw guide backup bearing for wear,

replace if necessary

• Weld not in proper alignment. Reweld blade

straight and true.

10.Cutting Rate Too Slow

• Increase band velocity.

• Increase feed pressure.

• Use a coarser pitch.

11.Blade Leading In Cut

• Reduce feed pressure or rate.

• Check adjustments and

wear of saw guides or rollers.

• Lack of band tension.

• Tooth set damage.

4. Use a square to make sure you are not pushing

the blade out of line and place a piece of white

paper between the blade guide and the blade to

allow for clearance.

Right Wrong

Right

Wrong

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