Landis Machine Modern Methods of Cylindrical Grinding Instruction Guides

MO

0

The efficiency of a modern cylindrical grinder is based on its capacity

do

a precise job - and do
production,
of

important

Landis designers are building machines with a combination

new features

it

reliably. To meet

built

around

four

the

demands

major

grinding

of

today's

machine

essentials:

(1)

work support

(1)

WORK SUPPORT

In cyl

indrical
rotated
to

within
workpiece
its
wheel

the

own

rest

the

, or

about

of

expected tole

must

weight

both.

(2)

grinding

its

axis.

the

machine.

also
or

the

wheel support

the

work

must

This

axis

must

The

work

rance

. In

be suppo

cutting

rted

against

pressure

(3)

be

supported

be

held

centers

many

of

wheelfeed

in

relation

must

be rigid

instances

bowing

the

due

grinding

and

the

to

(4)

wheel dressing

(2)

The
ported
t

he

the

WHEEL SUPPORT

grinding

by

true

geometric

wheelhead

to

the

wheel

spind

.

and

spindle

le

bearings

axis, and

to

must

be

to

provide rotation

hold

this

axis

adequate

in rel

ly

sup

about

ation

-

to

Pr

eloaded

The
designed
su

pport

Un

iversal

This

example
designed

which

roundness
li

onths. Work

on center

Wedge

The
to
su

pport
work rest jaws, actuated
hardened steel

in

a

nd

piece

Landis

to t

universal

are

work

work

giv

e depe

lo

conlacl

move

diameter

ball

slee

ve

footstock

footstock

to

provide a shake-free

he

headstock

of

the

into

producing
to

less than

can

s.

rest

rest ha

the workpie

with

forward

has

work

.

headstock

greater

Landis gri

s been des

ndable follow-up

wedges.

lhe

is

parts

25

be chuck

ce.

are

workpiece

as

the

reduced

rig

been

is

an

idi

ty

nders

with

mil

ed

or

igned

The

by

held

work

.

-

Landis

clearance
tremely
spindle
assures

The
its

,

-

roun
The

in
hands

maintenance

Hard

close

having

heavy

close

geometric

dne

ss,

exclusive

gs

are

of

Film

between

bearings

the

spin

operate

dle

and the

running clearance, combined

increased

cuts

running

clearance

axis

size

and

Hard

guaranteed

the

original

diameter

and

rapid

resulting

finish.
Film

Microsphere

for the

purchaser

sparkout

keeps
in

workpieces

life

.

with

bearing. This

between

for

the

spindle

wheel

of

the

with

normal care

low "tenths

with a rigid

the

bearings

faster cyc

rotating

with

improved

spindle

grinder

in

ex-

les

on

bear

the

and

"

,
.

-

2

Copyright

Landis

Tool

1978

(3)

WH

EELFEED

Given

adequate
necessary
and

to

accurately

is

reduced

Three

different

precision
ing

application.

work

to

bring

.

type

grinders

support

the

wheel

advance

wheelfeeds

to

meet

and

wheel

into

contact

the

wheel

are

the

requirements

The Landis cylindrical grinders shown on the following pages demon­strate the flexibility and capacity
profitable advantages of improved accuracy, simplified setup and
operation, and easier maintenance.

NO

det,11

lhe muNne

The

mi1J1mum

support

with

as

the

work

available

of

TE

Some

\s

of

p1oduchon

, it

the

on

any

w,trs.

doors

tr1e

rNCntnt A'I protect

ra

in

upJb1hl/

is

then

work

surface

Landis

grind-

s.ho.,,.

anCI

n f

2uards

or

lht

hnt

..

, de

fflith1r:ts ,

Oten

ce1

of

remo,ed

c,

sn

o:

...

n

1n

lht

open

a11.

s1 be OJOOttly

Ut

cuslomu

rtQUJ'tmenl\ and

(4)

WHEEL DRESSING

A

precision

This

provision

nates

the

need

The

Landis
wheelhead
of

the

dresser

more

uniform

and

diamond

oosill

1ns11l;eo

Jno hste11to

dresser

reduces

for

Truform

casting

with

parts

costs

do

these modern machines and the

on

to

1P11St

ult

i1d1J t1orgl

ht.fare ~p:

tri11tni'.

rwt

necew1111 rep,tstnl

is

required

time

operator care

dresser

to

assure a more

the

in

less

lost

is

wheel

time

on

all

production

for

dressing

and

skill.

mounted sol

uniform

spindle

and

reduces

idly

axis.

grinders.

and

elimi-

on

the
relationship
It

produces

both

wheel

.

1.

Ha

nd Oper

Can

include

riage

reversal

carriage

2.

Hydraul

a

positive

3.

Electronic Digi

two

types

MPC

Microtronic
troller
system
logic

controller

reversal.

ic

stop

of

electronic

and

core

.

(2)

Landis

adjustable

lnfeed

Both electronic

control

iary
Landis

wheelfeed

functions

design

ate

d

for

feed

automatic

with

advance

for

plunge

set

in

relation

tal

Wheelfeed

digital

Feed

which

memory. This

Microtronic

system.

systems, which

rates, distances,

in

the

cycle.

and

fabrication

J,

ing

in

thousandths

increment

at

either

grinding

to

final

size.

s:

Landis

wheelfeed

or

with

systems.

I.I

i•@t4=Pi

(\

or

feed

both

points

power

currently

(1)

tenths.

at

feed

utilizes a microprocessor

is a software

Feed

actuate

dwells

Both

electronic

which

programming

is a hardwired

stepping

and

motors,

other

systems

.

car

-

of

to

offers

Landis

con

-

auxil

-

are

of

The

principle
ability
form

bar

1.

Truform

marily
and

where

to

duplicate
on

the

where a high

different

requirements.

2.

Truform Dresse

production

ments

3.

Rotary

for

high

applicable.

and

are

25

Form

production

This

operational

with

cutting

feature

extreme

face

of

Dresser-Single Poi

finish

(25

profile

r-Rotary D

repetitive

rms

or

above.

Dresser

operations

is a plunge

wheels

iamond

operations

-

uses

when

type

of

this

accuracy

the

grinding

nt

Diamon

rms

or

are

part

Wheel-used

where

a

formed

dresser

dresser.

dresser

the

shape

wheel.

d-used

less)

is

required

of

varying

finish

require-

diam01ld

travefl8

is

the

of

the

pri-

job

in

high

wiled

IS:

Land

is

5R

automatic

crankpin

grinder

with Mi

A coordinated function of digital commands
and stepping motor feed

crotronic

PRODUCTION

Part: automotive crankshaft

Operation: automatically grin ds four pin

diameters in one handling

Rate: 25 shafts per hour

100% efficiency

Stock removal: 0.040" on diameter

Tolerances: 0.

0.
25 rms finish

Feed

DATA

0.006" to 0.008" per sidewall

0005

" size

00025

" roundness and taper

at

for

uniform

cycles

and

increase

d

prod

uctivity

Solid state
tions

The s

tepping motor

It

turns
distance
stops the feed screw
can be
g

rindin

Digital comm
controller are
tro

lled oscilla

grind

Abso lute

the same

ing feed variables associated with h

wheelfeeds are

rates resul

pred ic

contro

for grea

the feed screw

manually

g wheelhead

tab

ter

and

direction

ands

timed

tor

elimin

unifor

le produc

ts

from

size a

mity of

, accurate within

nd

l coordinates all wheelfeed func­uniform

responds to digital comm ands.

actuated for positioning

from

this
tion

ity and reliability.

for

the progra

of the wheelhead, and al

for

required dwell periods.

for wheel

a solid state programmed

by a

800,0

ated.

progra
new system. Con stant and

for

type is assured.

change and setup.

00

mme

all c

rankp

mm

ed rate,

cps

cri~lal con-

0.0

2°0. I .1herent

d grincJing feed

in grinders of

of

the

;draul

so

It

ic

··-

--

·-

-

..•

,

.

LANDIS

•t

• :

a

··

""

-

ff

..

•

is

-

·1

..

is

tamper proof. A change in

acc

omplished by use of a portable pro-

'-

.

~

,,.

Hard wired circuit board control
when continuous production
This system
ing cycle
gramming panel followed by a simple change
hard wired circuit board.

•

--

-··

: .

~

•

'

:

-·

..

-.

~

'

-,

~

-

is

of

like parts is required.

-~:_

.

.;

~

,

recommended

the

..

.

L,

~

,.

--·

~

/ ····-'·

I • \

•

grind-

of

the

. I

.

l

4

Thumbwheel
the

type
quiring
cycle.
of
distances, and dwells.

Programming

thumbwheel

switch

and size

an occasional

control

of

switches

is

recommended

parts

being

change

is

accomplished

and

of

dials

ground

the

through

for

where

vary

, re-

grinding

use

feed rates,

Automatic
positioning crankshafts
stopping

indexing on-

shaft

rotation.

the-fly

for

each new

greatly

reduces

pin

to

cycle

be

time

ground

by re-

without

Landis Truform dresser with rotary diamond

dressing wheel

is

programmed

by

thumbwheel
switches for amount of feed, frequency of dress,
and wheelhead compensation.

s

Landis

multiple

wheel

grinder

with

Microtronic

Feed

grinds

The

new
Feed
pletely
l

ine

bearings

75

Landis 5RIW

simultaneously

automat

to

80

camshafts

mult

iple wheel

grinds

ic operation. It's also used extensively to

of

cranksh

bearings

afts

.

per

grinder

of

camsha f

hour

with

Microtronic

ts

in a com-

grind

The Landis

◄

features automatic

eliminates

5RIW

taper

multiple wheel

in

taper

the

eliminator

workpiece.

grinder

which

6

Cam

contour

grinder

with

MPC

Microtron

ic

Feed

ro

ugh

an

finish

The Landis Type S
grinds
only

Typical
during
wheel speed
moval

0.

006" at
Stock removal is
tomer
to

25

grinds

intake

one

stock

roughi

during

requirements.

micro

Landis designed automatic loader and un­loader with magazine loader chute and

·escapement
cycle. After rough and finish grinding cycles
are completed, an automatic work ejector
actuated to position the part for removal
the radial arm

rolls down the escapement.

and

handling

removal on

ng

of 12,

finish gri

a wheel speed

inch .

cam

cam

exhaust lobes

of

each

operations: 0.

000

adjustable

Cam lobe

is

directly tied into machine

s.

Following removal, the part

contou

contour

shaft

the

new

sfpm

. Stock re-

nding: 0.004" to

of

6,000

to

rs

grinder

of

automotive

.

grinder

150" at

sfpm

suit

cus-

finish: 20

by

a

.

is

in

one

rough

camshafts

►

loading

and

finish

with

7

Small

crankshafts

ground

to

customer

roundness

tolerance

of

0.000050"

Two L
wheelhead are used to plunge
crankshafts
chine

diameter
The

diameter
Microtron

requirement.
cr
panel

given

time

andis 10" x

grinds

second

ankshaft

in

machine

the

jobs are repeated in the

in

in

ic Feed is especially suited to

can be established

discrete

-0.000075"

24"

Type 2R plain

for

power saw and

two

diameters, fillets, faces, radius and a

one

plunge

machine

one

plun

The stand ards

numb

will

duplicate

grind

grinds
ge grind .

a diameter, fillet, face and

ers

with

on

two

grinders

grind

.

of

on

the

several

snowmobile

this

production

the

Microtronic

abso lute assurance

selected

future

performance

.

plain

with 30°
different
motors. One ma-

type

of

for

each type

Feed

grinders

angular
sizes

grinding

of

taper

taper

control

that
at

any

a

with

Microtronic

Feed

"""""~:-

a.-..-+-.J-i

"+-,_• l""

......

...

-

~...,

~""[

I

'9

-

-411~"J

,J

8

Landis

automatic

bearing

race

grinder

with

Electronic

Feed

A Landis

grinder

pered
diameter
second

This

new machine can handle bearing races

to

4.800

on

this
work support
electro-magnetic chuck
against a unipole

automatic

with

roller

and

floor

" fl ange

machine

electronic

bearings

holds 0.

to

floor

diameter

are

shoes

work

Type R

feed

removing 0.018" stock

00025

cycle.

supported

during the g

is used

driver

conjugate

grinds

" size tolerance in a

. The bearing races

in

bearing

inner

and located on

rinding

to

hold

the

gri

races

from

operation.

the

inner

nding

race

of

ta-

from

position.

the

14

0.500

ground

OD

An

race

"

9

Landis

Microtronic

Sizefinder

with

programmed

punch

card

control

cuts

This
finder
of
tional machine.

Microtronic Sizefinder minimizes setup errors and setup time
assuring more quali
faulty

Punch cards are programmed
ground
(3) work rotation speed and (4)
card program capability
reader in the console permits processing shafts with a max
mum
card may
grammed

New Landis encoder endpoint control
sizing accuracy with only limited use of in-process gaging.

Typical example: this machine gri
length with four to seven diameters ranging from 0.

7.6444/7.6434
diameter shaft
rail above the grinding area.

overall

14" x 72"

and programmed punch card control grinds a variety

shafts in 50% less time than could

setup.

, (2) table positioning

of

14 diameters. For extremely small lots where punch

not

by dial control.

".
is

grinding

Type

be feasible , multiple diameters can

Processing time

8.6

4R

plain grinder with Microtronic

ty

workpieces by avoiding scrap due to

is

minutes. In-process sizing gages are mounted

cycle

for

(1) work diameter to

for

diameter

grinding

seven diameters. The dual card

nds

shafts ranging from 20"

less

handling, for the illustrated five

50%

be

done on a conven-

to

infeed rate. Single

of

the wheelfeed assures

5903/0.5898" to

on

be

multiple

Size-

be

ground,

be

pro-

to 26"

on

i-

in

a

diameter

shafts

10

Landis

automatic

piston

grinder

with

Microtronic

Feed

finish

grinds

180

cam

shaped

piston

skirts

A Landis
automotive
skirts
dictable
chucked,
machine
20

per

second cycle.

hour

5"

Type R

engine

using

the

machine

ground

control gage, unchucked

automatic

plant

reliability

operation. Parts

to

size

is

finish

of

Microtronic

through

piston

grinding

are

use

of

and

unloaded in

grinder

automatically

an

in -process electronic

cam

Feed

line in a

shaped piston

to

assure pre-

loaded ,

approximate

major

Pistons are ground

0.00025"

tolerance.

to

any one of eight dial selected sizes to a

Landis

roll

grinder

finishes

more

rolls

per

day

P-

"'-

..

,

.-e; - -

~.:..~:.

1. Landis Hard Film Microsphere wheel

ings-gu
than wheel spindle bearings in

2. New hy
movement

3. New sequential co

adjustme
and traver

grindin g.

4. N

ew

thr

ee

5. Crowning and concavi ng mechanism
more accurate.

6. Stepless variab le speed
movement

Landis Type R roll grinder

or 60" swings, and in lengths starting with

between centers.

aranteed

dro

static pressure pads assure

of

nt

of

se

autom atic wheelfeed

autom atic

s.

for

life-run

wheel carriage and wheelhead.

ntrol

wheel speed, whe elfeed,

speed

for

grind

rough to semi -

ing

at

any

for

programming

monitor

feeds.

controls

is

available in 36", 50"

spindle

closer clearances

other

work

fini

provides

is

for

all

roll

grinder

smoother

autom

speed,

sh

to

choice

five

machine

120

bear-

atic

fin

ish

of

times

"

.

12

New

Landis

plain

grinder

with

Microtronic

Feed

increases

productivity

Grinding

power tool

with

ing
Four

in

the

ground

reduced
A

unique

body area

Floor to

been reduced
Microtronic

tating

time

manufacturer

30°

angular

system

to

of

the

photo to

in five

from

lateral locating

of a rotor

floor

Feed

faster

for

wheelhead ,

maintain

many

the

operations

5.07

time

from

minimizes

setups when

for

a variety

parts

right. The

minutes

unit

including

3.12

power

of

small

parts

by a Landis

Microtronic

required lateral

ground

is now

method

(part

minutes

changing

on the Landis plain gri

rotor

spindle

ground

per

piece to 1.70

assures precise lateral

B)

without

grinding

scrap and raises

both end diameters and faces has

to 2.10

from

tool

has been reduced

6" x 18"

Feed

dimensions

(part

in one.

use

of

minutes

one

manufacturer

Type

and

a unique lateral locat-

.

A)

which was

Grinding

minutes

an in -process width gage.

.

quality

production by facili-

lot

of

parts

at a midwest

2R

plain

nder

are shown

time

.

dimension

to

another.

grinder

formerly

has been

of

the

Landis

plunge

grinders

with

Microtronic

"·'

F

eed

These
mental
and

two

per

hour

machines

control

faces in a single

per

production

units. The

machine

.

grind

air

machines

plun

ge

operation.

injection

grind

four

pump

rotors

diameters,

Production

used

adjace

rate

is

in

environ

nt

115

-

radius

parts

M

icrotronic

hard

amper

A variation
illustrated and
Landis
angular

Stock removal is 0.020"
from

0.000125"
and

In
without
In
duction

Ad

diti
two
in-process

mounted

wired

proof

of

the prog

10" Typ
wheelhead installed in a

face. Roundne

on the stem di ameters. Finish is

30 rms

installat

this

case a hard wired

onal fe

30"

on the st em diameters.

ions such as

ha ving progra

job is ins

ature

spaced g

gaging

dresser

Feed

circuit

described on pages 8 and 13, are

e R a

ss tolerance

ert

ed

s include: indexing reel loader

rinding

by

digital

with

with

board

production

ramm

utomati

mming

rotary

able Mic

c plunge grinders

from

this it

into

the dia

is desirable

switches and dials accessible to the

circuit

the logic rack.

wheels;

type gage

diamond

major

met

is

0.0001" on the large

board with

30

hp

for

grinding

rotronic

automotive

ers and

60

to

programmed

whee l drive

with

jump

cutter.

Feed

these

with

0.003" to

rms

have

the

and

-on

15°

plant.

diameter

on

the

Microtronic

loading

motor

diametral

0.004

large

feed cycle values

with variable

"

and

diameter

Feed operate

machine

ram

arranged

gage head

frequency

operator.

for

the pro-

for

lateral location;

drive;

and

heavy

automatic

duty

wheelhead

14

raise

productivity

in

major

automotive

plant

Cr

ankshaft

linebearing

grinder

with

Microtronic

Feed

Mainbearings, sidewalls,
3, 4 and 6 cylinder
ground

Production
shafts
parts

Operation:

2.999"
thrust
of

the

Stock removal is
from

-+-

0.0005"; and

In
cludes carriage positioning, lateral locating, work rest ad-

vance, wheel approach

jump-on in-process sizing gage and wheel dressing.

grinds

on a Landis 5R linebearing grinder.

rate

is 5.2

per

hour

finish

mainbearing

walls

0.160/0.130"

each sidewall; size tolerance on diameters is

addition

to

to

3, 4 and 6 cylinder

thrust

diesel

at

100% efficiency

parts

per

hour

excluding loading and unloading.

grind,

1.501

0.020"

finish

Microtronic

after

diameters,

/1.499"

fillet

from

25

rms.

control

walls including fillet radii

crankshafts

and

for

heat treating, the 3.

the

width

radii.

diameters, 0.

Feed,

automatic

including

are automatically

for 4 and

3 cylinder shafts 6.7

sidewalls including

and

approximately 90°

008" to 0.010

sidewall feed,

shafts.

6 cylinder

operation in-

of

000

/

"

Plunge

grinding

large

railroad

axles

on

centerless

grinders

Journal and oil seal diameters,

railroad axles are
centerless
each end.

After

grinding

elevated ,

end diameters.

◄ In-process sizing gage

Stock removal

taper of

grinder

an

axle is loaded

position. Upon completion

turned

0.001

ground
. Grinding

180

is

is

0.010" to

" per foot.

onto

° and lowered

in position

0.012

adjoining

with

one

handling

time

is 1

an elevator

as

one end of the axle

". Diameters are held to a maximum

radii on both ends

on a Landis 14R

minute, 55

unit, it

of

the

for

grinding

is lowered

grind, the

seconds

the

of

for

into

part

is

opposite

is

ground.

17

Landis
to

tolerances

Where fast setup and fast change of setup are positive requirements,
as in
grinding

range in length

this

3R

installation ,

can be profitable. Workpieces ground on this machine

universal

of

-f-0.0001"-0.0000"

the

Landis 3R universal proves

from

1/ 2"

to 72",

grinds

with diameters from 7 /16"

plunger

shafts

that

small lot

to 14".

Grinding the plunger shaft for a hydraulic arm. Di­ameter is ground to

1.7490" +0.0001" -0.0000

".

Typical shafts
universal. Internal grinding attachment grinds ID
of bushings

up

and

bushings ground

to 12".

on

Landis

3R

Landis

abrasive

plunge

grinders

rough

grind

wobble

plates

removing

Landis

rough
conditioning
parts
drels
two
Wheel speed is

The
live
system
for
heavy
with
wheel

tronic

Wobble plates, lower right,
each end
tween the two power driven work centers.

14" x 24"

grinding

at a time
per

parts,

machines

spindle

in

reloading;

duty

rotary

with

Feed

of

0.700"

Type 5R abrasive

wobble

compressors.

on a

hour

a mandrel.

to

a

total

headstocks

which

wheelhead

diamond

5"

system

stock

12,000

have

each

variable

face

and

.

stock

plates

Each

mandrel

60-100

removal is 0.

sfpm.

left

and

with

hydrostatic

spindle

speed
mounted
cutters; 36"

special cycle

are

positioned with one workpiece

The

mandrel

used

machine grinds

at

rms

right

automatica

hp

grinding

is

automatically located be-

in

11

seconds

plun

ge

gri

nders

in

automotive

a rate

finish.

hand power driven

wheel

diameter

of

155

In

700

"

per

spindle

lly retracts

drive

wheel dresser

for

Landis Micro-

are

two

man

grinding

part.

bear"ing

motor;

grinding

air

-

on

►

..

--

19

Landis

automatic

chucking

grinder

with

Microtronic

Feed

At a major automotive

been tooled
of

diff
ting
different
liable
ju

stment

predictable

grinds

to automati

erential

of

the

gri

size parts.

production.

to

machine

pinion

ndin

com

g cycle

pensate

240

It

Microtronic

oper

differential

plant

gears.

assures

a Landis R chucki

cally

plun

ge grind

Microtronic

to

suit

the

faster, more

Feed requires no

for

hydraulic changes.

ation, part

gri

pinions

ng

grinder

the

spherical radius

Feed allows

nding requirements

uniform

operator

It

after

part

, day

after

per

has

the

set-

and

assures

day.

Operation: plunge gri
Rate
Stock removal : 0 .

Customer

of

re-

ad-

: 2

hour

40

parts

tolerance required: 0.

Typical Part Production Data

nd

2.

371

/ 2.3

69"

spherical radi us

per hour

007

at

100%

eff1c1

ency

to 0.01 l " from radius

00

2" size; 30

rm

s fi

nish

20

Apprentices

grind

small

parts

to

accuracies

of

0.0001",

hold

A Landis
tant
maker
Training

the

ground

On
to
within

major

2 mi

part

apprentices

top

include push rods, sleeves, pins, and shave dies.

a 4

½"

+0.000

0.0001

OD is held

cro

10

" x 20"

of

the

training

on

the

1 R is one

performers

long

multidiameter

and

-0.001

".

Concentricity

within

inch f

lR

at

a leading electrical manufac

in

" . Taper

0.

inishes

universal

program

of

the

the

apprenti

push rod, OD's are held

from

0001

".

with

grinder

for

machinist

final assignments

ce shop . Parts

end

to

of

multidiameters

Landis

is

an

impor-

-tool-

tur

end is held

er.

for

to

IR

Typic

al

parts ground

1½

''

long sleeve, top, and

push

rod

.

by

apprentices

4½

on

Landis

" long multidiameter

IR

are

Automatic

dual

head

valve

grinder

raises

pr:oduction

A Landis special dual work head
faces
method by 100%. The two parts
the same
grind

of

two valves

grinding

a wide variety

100%-holds

simultaneously-increasing

wheel. The Landis dual head grinder can

of

parts at considerable savings in time and costs.

0.000025"

grinder

are

automatically finish grinds

production over

ground in a single operation by

Production:
Stock remov

◄

The valves are positioned in collets of du al

located above and below wheel centerline.

flatness

be

former

tooled

Two valve

al: 0.0095

to

s eve

ry 7 se

". Flatness: 0.

conds or

000025

960

".

work

per hour.

heads

22

. . "

(,

• I

..

"

--

1

■

1\

I

~

Inner

and

outer

bearing

races

ground

to

precision

tolerances

on

Landis

thrufeed

centerless

A large

"exceed present g
a new level
variety
furnished
that
manua
ing

powered
wheelhead for size co

Typical of the production and tolerances obtained are in
the thrufeed grinding of
races
grind removing up to 0 .
roundness and a finish grind remov ing 0.

0.002
6 rms finish, roundness less than

0.

0001

9 high band.

grinder

of

inner

demand.

l in feed

wheel

two

as

shown below. Two passes are required: a rough

''.

Thrufeed rate

"- 0.

0002

bearing

of

a 14R centerl ess

The

and

-way

" and waveometer of 7 low band and

manufacturer

rind

ing

capabilities

quality" in

and

outer

machine

of

the

reg

Landis Micro-Size , an

movement

is 20" per minute. Tolerances are:

thrufeed

bearing

grinde

was

ulat

ing

ntrol.

the

8_000" diameter outer

035

" stock to affect better

0.0001

wanted

ana

grinding

races. Landis

r which

equipped

wheel

of

and

ultra

the grinding

",

squareness

0005

to

reach

a

met

with

grind-

fine

" to

23

Landis

grinders

hold

0.000

l"

tolerances

and

A New England
to
grinders
act
setups.

less

regrind

duplication

mill rolls

provide simplified

than 2 rms

producer

of

repeat

of

thin

strip

to

close tolerances and

adjustment

settings

, and reduced

finish

is using Landis precision

for

crown

mirror

ing

downtime

finishes. Landis

and concaving, ex-

T

he

company's

◄

plai n grinders and two sine
smaller rolls and slitter knives ground on
chi nes are shown here.

throu

grinders

gh fast

grinding

department

bar

grinders. Some of

includes

the

three

Landis

Landis

the

ma-

Landis

fr

grinders

om one ro ll

provide

to

another.

fast

setup

and

fast

changeover

Landis

heavy

duty

plain

grinder

has

12,000

lb.

workpiece

capacity

between

centers

Multip
are
of
and footstock assures
customer

To speed wheelhead
size

wheelhead is

feed is actuated by a han dwhee

The shaft illustrated is 973/s"
Seven diameters ranging from 7" to 29½"

tomer

between

le

diame

gro

un d on

an Eastern

.

diameter

's tolerance for size to

0.015

ters

this

manufacture

to

anot

part

of

" and 0.

on a variety

36"

x 120"

r. A specially

the

weight

positioning

her,

electric

the

machine

in length and weighs approximately 8,

±0.0005

020

".

of

LFF

when

equipment. Grinding

l.

" to + o.

heavy

plain grinder

capacity

rapid

OD

armatu

designed

required

changing

moveme

are

ground holding cus-

001

".

Stock removal is

re

shafts

at

the

plant

headstock

by

from
nt of the

wheel-

600

the

one

lbs.

14" plunge

grinder

with

Microtronic

Feed

grinds

multiple

diameters,

radii,

taper

and

shoulder

Complete spindle
in one plunge operation on this Landis 14" Type R plunge

g

rinder with 30° angular wheelhead. Two sizes
ground in production lot sizes. The
tronic
changeover and setup . On

spi
pa

Typical operation
fillet radius, adjacent taper,

1.7550/ 1.7543
removal
from the shoulder to a maximum
is
proximately

Feed

ndle

is

rt

after

is 0.015

within 0.

programmed, the

part

0015

100

in

one

OD grinding requirement

for

the

specific sp indle

and day

is

finish grinding the 0.

" diameter, 0.

" to 0.

" TIR (customer requirements) . Producti
operations per hour.

022

operation

ability

to

ce the g

aft

er da

1.6878/ 1.6871
125

" fillet radius and adjacent shoulder. Stock

" from the diameters and

50

rinding

plunge grinder repea

y.

9998

" diameter, 0.

rms finish. Concentricity of diameters

to

be ground

cycle

/ 0.

9991

s are

" diameter, 0.

complet

of

spindles are

prog

ram

for

the

ts tha

125

" fillet radius,

0.005

on

ed

Micro-

simplifies

specific

t cycle

500

"

to

0.007

"

rate

is

ap-

26

the

world's

most

complete

line

of

cylindrical precision grinders

is

designed and built by Landis . . .

universal

plain

centerless

roll

crankshaft

camshaft

multiple

L

ANDIS

bearing

wheel
valve face

race

other

con

special

nu merica I ly

jugate

purpose

piston

grinders

plunge

control

led

c

hucking

La n

dis

Tool

Company,

Waynesboro,

Pennsylvania.

MM-78