Sharp AE-X9JJ Manual de usuario descargar pdf (Pagina 16)

MARTINDALE

• 1375 Hird Ave • Cleveland, OH 44107

Phone (216) 521-8567 • Fax Local 521-9476 / USA & Canada (800) 344-9191

Web Site: www.martindaleco.com

11/07

To obtain a 1/16 inch deep cut with 1/32 inch free copper above the mica, the following table may be used:

Thickness of Mica Angle of “V”-cutter

.023 inch 40°

.029 inch 50°

.036 inch 60°

The necessity of accurately centering the circular cutter on the mica is readily apparent. Mica fins in V-slots being

wedge-shaped, are more difficult to remove than the fins of uniform thickness left at the sides of U-slots by inaccu-

rate centering of the circular cutter.

COMPOUND LAND

The teeth on the compound land mica saw are alternately ground to a special taper which reduces the impact on

each individual tooth and produces chips of just slightly over half the width of the mica slot thereby eliminating the

tendency to clog. When undercutting with a compound land saw the bottom of the slot will appear to be flat.

However, as a result of the reverse taper on alternate teeth, the slot will have a slight pyramid or convex surface.

This type of saw operates cooler and cleans better thereby prolonging the saw life with resulting economy to the

user.

After a commutator has been undercut, it should be very carefully inspected to assure that all copper particles have

been removed, that the bars have been carefully chamfered, and that all sharp edges and burs have been elimi-

nated. Then each slot should be individually checked and reworked as necessary to remove any traces of fin or

side mica.

Finally, the surface should be lightly polished with a fine-grain commutator stone. **A more popular method is the

use of a rubber bond cleaning stone, which will properly finish the surface and leave the proper filming required.

Helpful Hints For Saw Users

(Mica Undercutting Saws & V-Cutters) (Continued)

Mica Fins Are Left in Slots

That Are:

Too Shallow -or- Off Center

Compound Land

Saw Cut

Copper

Mica

1 2 ... 11 12 13 14 15 16

Sin comentarios

Sharp AE-X9JJ Manual de usuario Pagina 16