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Toprem tetter
Pinion Whole Depth of Outer Cone Distance
finish and better cutter life are obtained when climb-cutting provided the gears or pinions are rigidly supported during the cutting operation.
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Up to 0.275"
This is true for both roughing and finishing. This
I
E 0.276" to 0.375"
machine can be set-up to cut on either the up-roll
C 0.376" to 0.500"
or the down-roll but normally the cutting is done
B 0.501" to 0.650" on the up-roll. Therefore, right-hand cutters will be
A 0.651' to 0.800"
most commonly used when generating roll is
Z 0.801" ond Up
employed.
When ordering cutters from the Gleason Works,
Another specification for cutters relates to the the following information should bei furnished with
direction in which the cutter rotates when it is the order:
cutting. A right-hand cutter is one which rotates
1. Summary number, if the summary was fur
clockwise when viewed from the back; a left-hand
nished by the Gleason Works. Otherwise
cutter rotates counterclockwise. The cutter spindle
send a copy of the summary.
of the No. 116 Hypoid Generator arranged for
2. Type: Roughing or Finishing.
r general work ma.y be run in either direction. Therefore either hand of cutter may be used on
3. Member: Pinion or Gear. For pinion finishing cutters, specify whether inside or outside
this machine. The machines arranged for produc
cutting blades are required.
tion work are normally set up for using only right-
If a summary or summary number cannot be
i: hand cutters. While a given gear or pinion may be successfully cut with either hand of cutter, there
furnished when ordering cutters, then furnish the following information:
are definite advantages to be obtained by using
1. Kind: Spiral bevel, Zerol bevel, or hypoid.
E the hand of cutter which best suits the particular requirement of the gears being cut. When the hand' of cutter is the same as the
Generated or Formate. 2. Type: Roughing or Finishing. 3. Size: Average diameter (or point diameter
hand of spiral of the gear or pinion being cut, the
on pinion finishing cutters), point width, blade
direction of the cut is from the small end to the
letter, blade radius, and on pinion finishing
large end of the teeth. For roughing flat gears
cutters whether inside or outside cutting
(greater than 3 to 1 ratio), cutters with the same
blades are required.
E hand as the hand of spiral are used so that the thrust of the cut forces the work against the chuck. On this machine, right-hond cutters climb-cut on
4. Pressure Angle: Cutter number and pressure angle.
5. Maximum Tooth Depth.
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the up-roll and left-hand cutters climb-cut on the down-roll. It has been determined that better
6. Toprem Letter. 7. Hand.
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GLEASON-000221