CLAUSING 5910 Series - Carriage, Threading Dial, and Feed Engagement

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5910

CARRIAGE

LOCK

SCREW

locks

carriage

to

bed

for

facing

or

cue-off

operations.

Caution:

Be

sure

co

re

-

lease

lock

before

moving

carriage.

CARRIAGE

HANDWHEEL

moves

carriage

along

the

bed

manually.

CROSS

FEED

SLIDE

AND

COMPOUND

REST

HAND-

WHEELS

move

the

cross

slide

and

compound

rest

in

and

out.

POWER

FEED

LEVER

controls

the

opera-

tion

of

both

power

longirudinal

feed

and

power

cross

feed.

Lever

has

three

posi-

tions:

center

is

disengaged

(neutral

for

hand

feeding),

co

the

left

and

down

engages

power

cross

feeds,

co

the

right

and

up

engages

power

longitudinal

feeds.

Caution:

The

power

feed

lever

and

the

half

-

nut

lever

are

interlocked.

Half-nuts

muse

be

disengaged

(half-nut

lever

in

down

position)

before

power

feeds

can

be

engaged.

NOTE:

Cross

feed

is

½

of

the

race

of

longitudinal

feed.

POWER

FEED

LEVER

Figure

9

NEUTRAL

POSITION

HALF-NUT

LEVER

engages

half-nuts

with

lead

screw

for

threading

- -

refer

to

figure

9.

To

engage

half

-

nuts:

1.

Move

power

feed

lever

to

center

(

disengaged

or

neutral

position).

2. Move

half-nut

lever

to

up

position.

NOTE:

Safety

lock

prevents

engaging

feeds

and

half-

nuts

at

same

time - - do

not

force

levers.

Important:

Never

use

half-nuts

for

power

feeds.

Using

half-nuts

for

threading

only

will

maintain

the

accuracy

of

the

lead

screw.

9

THREADING DIAL

The

threading

dial

performs

the

important

function

of

indicating

the

proper

time

to

engage

the

half-nut

lever

so

that

tool

will

enter

the

same

groove

of

the

thread

on

each

successive

cut.

To

maintain

the

accuracy

of

the

worm

gear,

loosen

clamp

screw

and

swing

threading

dial

away

from

lead

screw

when

not

threading.

When

cutting

even-numbered thread

(such

as

12,

14,

16,

32,

etc.,

per

inch),

engage

the

half-nut

lever

for

the

first

cut

when

the

stationary

mark

on

the

outside

of

the

threading

dial

is

in

line

with

any

of

the

marks

on

rotating

portion

of

the

dial.

Any

dial

marking may

be

used

for

successive

cuts.

When

cu

t

ting

odd-numbered thread

(such

as

7,

9,

11,

23, 27,

etc

.,

per

inch),

engage

the

half-nut

lever

for

the

first

cut

and

all

successive

cuts

when

-

the

stat~on-

ary

mark on

the

threading

dial

is

in

line

with

any

of

the

numbered

marks

on

the

dial.

When

cutting

half-numbered threads (

such

as

4½, 5½,

6½,

11½,

ere.,

per

inch),

engage

the

half-nut

lever

at

the

same

number

on

the

threading

dial

for

each

cut.

The

threading

dial

cannot

be

used

for

metric

threads.

For

these,

the

half-nut

is

closed

on

the

lead

screw,

and

remains

engaged

until

the

thread

is

completed.

After

each

cue

the

tool

withdrawal,

the

tool

is

brought

back

to

starting

point

by

reversing

the

spindle.

SEQUENCE

OF

ENGAGING

CONTROLS

FOR

THREADS

OR

FEEDS

L

Disengage

power

feed

and

half-nut

levers.

2.

Set

quick-change

mechanism:

A.

Move

thread-feed

selector

handle

to

the

number

position

indicated

on

chart

- -

refer

to

figure

7.

B.

Position

SLIDING GEAR.

C.

Position

SELECTOR

KNOB

to

A,

B,

or

C - -

engaged

position

is

vertical.

3,

Shift

LEAD

SCREW

DIRECTION

LEVER

for

di-

rection

desired,

4.

Select

drive

- -

either

dire<;c

or

back

gear

_ -

accord-

i

ng

to

spindle

speed

'

required

.

5, Scare motor.

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