Jet JVM-836 User manual

.JET
EQUIPMENT& TOOLS
OPERATOR'S MANUAL
JVM-836 Milling Machine
-,)~.
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JET EQUIPMENT & TOOLS, INC.
A WMH Company
www.jettools.com
P.O. BOX 1349
Auburn, WA 98071-1349
e-mail [email protected]
253-351-6000
Fax [phone]
M-690036 5/00

Important Information
1-YEAR
LIMITED WARRANTY JET offers a one-year limited
warranty on this product
REPLACEMENT PARTS
Replacement parts for this tool are available directly form JET Equipment & Tools.
To placean order,call 1-800-274-6848. Please havethe following information ready:
1. Visa, MasterCard, or DiscoverCard number
2. Expirationdate
3. Part number listed within this manual
4. Shippingaddress other than a Post Office box.
REPLACEMENT PART WARRANTY
JET Equipment & Tools makes every effort to assure that parts meet high quality and durability
standards and warrants to the original retailconsumer/purchaserof our partsthat each such part(s)
to be free from defects in materialsandworkmanshipfor a period of thirty (30) days from the date of
purchase.
"P~O~.E.c)FPDRCHASE
Please retainyour dated sales receiptas proof of purchase to validate the warranty period.
LJMITEDTOOL AND EQUIPMENTWARRANTY
JET makes eVeryeffort to assure that its products meet high quality and durability standards and warrants to
the original retail consumer/purchaser of our products that each product be free from defects in materials and
workmanship as follows: 1 YEAR LIMITED WARRANTY ON THIS JET PRODUCT. Warranty does not apply
to defectsdue directly or indirectlyto misuse, abuse,negligence or accidents, repairsor alterations outside our
facilities or to a lack of maintenance. JET LIMITSALL IMPLIEDWARRANTIESTO THE PERIOD SPECIFIED
ABOVE FROM THE DATETHE PRODUCTWAS PURCHASEDAT RETAIL. EXCEPT AS STATEDHEREIN,
ANY IMPLIED WARRANTIES OR MECHANTABILITYAND FITNESS ARE EXCLUDED. SOME STATESDO
NOT ALLOW LIMITATIONS ON HOW LONG THE IMPLIED WARRANTY LASTS, SO THE ABOVE
LIMITATIONMAY NOTAPPLY TO YOU. JET SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIESTO
PERSONS OR PROPERY OR FOR INCIDENTAL, CONTINGENT, SPECIAL OR CONSEQUENTIAL
DAMAGES ARISING FROM THE USE OF OUR PRODUCTS. SOME STATES DO NOT ALLOW THE
EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE
LIMITATIONOR EXCLUSION MAY NOT APPLY TO YOU. To take advantage of this warranty,the product or
part must be returned for examination, postage prepaid, to an authorized service station designated by our
Auburn office. Proof of purchase date and an explanation of the complaint must accompany the merchandise.
If our inspectiondiscloses a defect, JET will either repair or replacethe product or refundthe purchase price, if
we cannot readily and quickly providea repair or replacement,if you are willing to accept such refund. JET will
return repaired product or replacement at JET's expense, but if it is determined there is no defect, or that the
defect resultedfrom causes not within the scope of JET's warranty,then the user must bearthe cost of storing
and returningthe product. This warranty gives you specific legal rights,and you have other rights, which vary,
from state to state.
JET Equipment &Tools. P.O.Box 1349, Auburn, WA98071-1349 .[phone]

it WARNING
1. Read and understand the entire
instruction manual before attempting
set-up or operation of this machine.
2. Always wear approved safety
glasses/face shields while using this
machine.
3. Makecertain the machine is properly
grounded.
4. Beforeoperating the machine, remove
tie, rings,watches, otherjewelry, and roll
up sleeves above the elbows. Remove
all loose clothing and confine long hair.
Do not wear gloves.
5. Keepthe floor around the machineclean
and free of scrap material,oil and
grease.
6. Keep machine guards in place at all
times when the machine is in use. If
removed for maintenance purposes, use
extreme caution and replacethe guards
immediately.
7. Do not over reach. Maintaina balanced
stance at all times so that you do not fall
or lean against blades or other moving
parts.
8. Makeall machine adjustments or
maintenancewith the machine
unpluggedfrom the power source.
9. Usethe right tool. Don'tforce a tool or
attachment to do a job which it was not
designed for.
10. Replacewarning labels if they become
obscured or removed.
11. Make certain the motor switch is in the
OFF position before connecting the
machine to the power supply.
12. Giveyour work undividedattention.
Lookingaround, carrying on a
conversation,and "horse-play" are
careless acts that can result in serious
injury.
13. Keepvisitors a safe distance from the
work area.
14. Use recommended accessories;
improper accessories may be
hazardous.
15. Keep handsaway from all moving parts
(belts, cutters, gears, etc.).
16. Never operatethis machine under the
influenceof alcohol or drugs.
17. Read and understandall warnings
posted on the machine.
18. This manual is intended to familiarize you
with the technical aspects of this milling
machine. It is not, nor was it intended to
be, a training manual.
19. This machine isdesigned and intended
for use by properlytrained and
experienced personnel only. If you are
notfamiliar with the proper safe use of
milling machines,do not use this
machine until proper trainingand
knowledge has been obtained.
20. Failureto complywith all of these
warnings maycause serious injury.
2

Specifications JVM-836
Stock Number .690036 JVM-836-1
Stock Number ..690038 JVM-836-3
Spindle Taper R-8
Diameter of Quill (in) 3-3/8
Number of Spindle Speeds (5) JVM-836-1
Numberof Spindle Speeds ,(10) JVM-836-3
Range of Spindle Speeds (rpm) ".. 240-1,550 JVM-836-1
Range of Spindle Speeds (rpm) 120-1,550 JVM-836-3
Spindle Travel (in) 5
Collet Capacity (in) 1/8-7/8
Head Movement 90° Land R
MaximumTravel of Ram (in) , 10-1/2
Maximum Distance Spindle to Table(in) " 13-3/4
Minimum Distance Spindle to Column (in) 5-114
Maximum Distance Spindle to Column (in) 15-3/4
Maximum LongitudinalTableTravel (in) "24
Maximum CrossTableTravel (in) , 9-1/2
Maximum Knee TableTravel (in) ,14
Size of Table (in) , 7-7/8 x 36
T-Slot (number) Size (in) (3) 5/8
T-Slot Centers (in) 2-1/2
Motor (JVM-836-1) , \1-112HP,1Ph 115/230V
prewired 115V
Motor (JVM-836-3) 1-1/2 HP, 3Ph 2 Speed
.230V Only
Floor Space Required (LxWxH/in) 55 x 52 x 77
Net Weight (approx.) .1474 Lbs.
Table of Contents Page
Warranty 1
Warnings .2
Specifications 3
Tableof Contents 3
Installation Layout 4
Shipping Container Contents 5
Unpackingand Clean-Up 5
Raisingthe Head 5
Site Preparation 6
Lifting the Mill 6
Lubrication 7
ElectricalConnections 7
Controls 8-9
Changing Speeds 9
Positionof Ram 9
Adjustments ...9
Parts Listsand Breakdowns , 11-21
Wiring Diagram 22
The specifications inthis manual are given as general informationand are not binding. JET Equipment
& Tools reservesthe rightto effect,at any time andwithout priornotice, changes or alterationsto parts,
fittings, and accessory equipment deemed necessaryfor any reaso'nwhatsoever.
3

JVM-836 Installation Layout
5"
1916
16.5"
~I<X)
<D
HOLD
DOWN
BOLT
.MI
CD
M~
(\J
(Y)
A-A
L..J
..
VIEW A-A
3"
74-
4

Shipping Container Contents
1. Mill
1. FlatWay Cover (rear)
1. Accordion Way Cover (front)
1. KneeCrank
1. Drawbar
1. Tool Box:
1. Hex Wrench Set (1.5 -10mm)
1. 17/19mm Combination Wrench
1. #2 Cross Point Screw Driver
1. #2 Flat Blade Screw Driver
1. Oil Can
1. Handwheel
1. Adjustable Wrench
5. Handles for Handwheels
1. Operator's Manual
1. Warranty Card
Unpacking and Clean-Up
1. Finish removing the sides and top of the
crate. Leave the mill bolted to the skid until
it is ready to be moved to its final location.
2. Clean all rust protected surfaces with
kerosene or a light solvent. Do not use
gasoline, paint thinner, or lacquer thinner.
These will damage paintedsurfaces.
3. Cover all machined surfaces with a film of
light machinetool oil to inhibit rust.
4. Removewood block from belowthe knee.
Raising the Head
1. Remove handwheel (A, Fig. 1).
2. Loosen four cap nuts (B, Fig.1) with a Y2
turn to unlock the head. Do not remove
these nuts unless you are prepared to
remove the head.
3. Use a 19mm socket and breaker bar on
adjusting nut (C, Fig. 1)to raise the head.
I~..
~"
--
A L
Fig.1
5

Site Preparation
CAUTION!
Mill must be supported equally under all
four corners. Failure to comply may cause
the column to twist and put a bind in the
bedways.
The mill must be placedonan evensurface
and bolted to the floor. Anchor bolts of
sufficient size and length must be fastened to
the floor according to the footprint of the mill.
See Installation Layout page4.
Lifting the Mill
~WARNING
Keep people a safe distance away from the
milling machine while ifis being moved.
Failure to comply may cause serious injury!
Lift the mill with appropriate sized lifting
straps. Follow the diagram in Fig. 2 for the
proper position ofthe straps under the ram.
Note: the position of the ram, and that the
table has been moved against the column.
Tighten ram locking bolts (A, Fig. 2) before
lifting.
Carefully lift the mill. Move into position
over the anchor bolts. Lower the mill onto the
anchor bolts. Check for level, and secure with
washers and anchor bolt nuts.
Check the mill for level with a machinist's
level placed on the table. Mill must be level
back to front and side to side. Shim if
necessary, but rememberthat the mill must be
supportedequallyat allfour corners. Checkfor
level beforetightening the anchor bolt nuts and
after tightening them. Adjust as necessary.
6
A A
D
Fig. 2

Lubrication
CAUTION!
Do not operate the mill before lubricating
the machine fully. Failure to comply may
Ccil'$e damage to ttle machine.
Reference Fig. 3 for parts of the mill to
lubricate:
A. Spindle Bearings - fill oil cup once daily
with Mobil DTE@Oil Light.
B. Oil Pump - fill reservoir as needed by
removingcap on top of tank andfilling with
Mobil Vactra Oil NO.2. Pump oil with
release handle once for every hour of
operation. Way surfaces and leadscrews
are lubricated inthis manner.
C. Knee Leadscrew - lubricatewith Mobilith@
AW2 once a week.
Electrical Connections
LtWARNING
All electrical connections must be made by
a qualified electricIan! Failure to comply
may cause serious injury!
The JVM-836-3 Mill is rated 1-1/2HP,3Ph,
230V only. The JVM-836-1 Mill is rated at 1-
1/2HP, 1Ph 115/230V and comes from the
factory prewired at 115V.
Confirm power at the site matches power
requirements of the mill before connecting to
the power source.
To change from 115V to 230V operation
(JVM-836-1 only), remove the junction box
cover on the motor and change the wires
accordingto the diagram found onthe insideof
the cover.
The mill must be properly grounded.
7
Fig. 3

Controls
A. BeltCover Lock Knobs (A, Fig.4) located
on the right side of the head. Loosen and
remove belt cover to change belt position
on the pulleys.
B. Spindle Brake (B, Fig. 4) located on left
sideof the head. Move in eitherdirectionto
stop spindle once power has been turned
off.
C. Quill Feed Handle (C, Fig. 4) located on
the right side of the head. Rotate counter-
clockwise to lower spindle. Return spring
will retract the spindle automatically once
the handle is released.
D. Quill Lock (0, Fig. 5) located on the right
side of the head. Rotate the handle
clockwise to lock the quill in a desired
position. Rotate the handle counter-
clockwise to release.
E. Micrometer Adjusting Nut (E, Fig. 4)
located on the front of the head. Use for
setting specific spindle depth.
F. Manual Fine Feed (F, Fig. 4) located on
the left side of the head. Mustengagefine
feed (I, Fig.5) for handwheelto function.
G. Quill Stop (G, Fig. 4) located on the front
of the head. Used in conjunction with
micrometer adjusting nut for predetermined
depth.
H. Reversing Switch (H, Fig. 5) located on
the left side of the head. Switches rotation
of spindle. For 3 Ph motor there is an
additional low and high-speed option.
I. Fine Feed Engagement (I, Fig. 5) located
on the left side of the head. Turn clockwise
until tight. This engages the manual fine
feed.
J. Draw Bar (J, Fig. 5) located on the top of
the head. This is used to tighten a R-8
collet or R-8 tool into the quill. Tighten
draw bar enough to hold tool securely
during millingoperations.
G
B-II"""-"-
F
E
Fig. 4
J
H
".. CI
Fig. 5
8

K. Longitudinal Movement (J, Fig. 6)
handles located on opposite ends of the
table. This controls the X axis.
L. Cross Movement (K, Fig. 6) handle
located directly in front of the machine.
This controls the Y axis.
M. Knee Handle (L, Fig. 6) this raises the
table up and down.
Changing Speeds
1. Unscrew two knobs (A, Fig. 4) and remove
belt cover.
2. Loosen hex nut (A, Fig. 7).
3. Take the tension off the belt by moving
handle (B, Fig. 7).
4. Use the RPM chart, located on the back of
the belt cover, to place the belt in the
desired position.
5. Place tension on the belt by moving
handle.
6. Tighten hex nut.
7. Always replace the belt cover!
Note: The 3 Ph motor has an additional low
andhigh-speedsetting(H, Fig.5).
Position of Ram
CAUTION!
Care should be taken to lock ram securely
after setting.
Ram can be moved by loosening two
handles (A, Fig. 8), and turning handle (B, Fig.
8) to desired position.
Note: It is recommended while doing heavy
millingwork the head should be left as close to
face of turret as possible. Maximum rigidity is
then obtained.
I
K
..... -,'
Fig.6
I
'~:'
_II
.Fig.7
B
Fig.8
9