This .pdf document is bookmarked Operating Instructions and Parts Manual Variable Speed Turret Mill Model JTM-4VS Shown with optional accessories X-Axis Table Powerfeed and DRO WALTER MEIER (Manufacturing) Inc. 427 New Sanford Road LaVergne, Tennessee 37086 Ph.: 800-274-6848 www.waltermeier.com Part No. M-690182 Revision H 04/2011 Copyright © 2011 Walter Meier (Manufacturing) Inc.
Warranty and Service Walter Meier (Manufacturing) Inc., warrants every product it sells. If one of our tools needs service or repair, one of our Authorized Service Centers located throughout the United States can give you quick service. In most cases, any of these Walter Meier Authorized Service Centers can authorize warranty repair, assist you in obtaining parts, or perform routine maintenance and major repair on your JET® tools.
Table of Contents Warranty and Service .................................................................................................................................2 Introduction ...............................................................................................................................................7 Specifications ............................................................................................................................................7 Unpacking .................
Lead Screw Assembly .......................................................................................................................... 37 One-Shot Lubrication System ................................................................................................................ 38 Electrical Connections – Single Phase only ............................................................................................ 39 Electrical Connections – 3 Phase only .............................................
Warning 1. Read and understand the entire owner’s manual before attempting assembly or operation. 2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with all of these warnings may cause serious injury. 3. Replace the warning labels if they become obscured or removed. 4. This turret mill is designed and intended for use by properly trained and experienced personnel only.
21. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are careless acts that can result in serious injury. 22. Maintain a balanced stance at all times so that you do not fall or lean against the cutters or other moving parts. Do not overreach or use excessive force to perform any machine operation. 23. Use the right tool at the correct speed and feed rate. Do not force a tool or attachment to do a job for which it was not designed.
Introduction This manual is provided by Walter Meier (Manufacturing) Inc., covering the safe operation and maintenance procedures for a JET Model JTM-4VS Turret Milling Machine. This manual contains instructions on installation, safety precautions, general operating procedures, maintenance instructions and parts breakdown. This machine has been designed and constructed to provide years of trouble free operation if used in accordance with instructions set forth in this manual.
3 1 Unpacking Open shipping container and check for shipping damage. Report any damage immediately to your distributor and shipping agent. Do not discard any shipping material until the Turret Mill is assembled and running properly. Compare the contents of your container with the following parts list to make sure all parts are intact. Missing parts, if any, should be reported to your distributor. Read the instruction manual thoroughly for assembly, maintenance and safety instructions.
and-aft leveling. Be certain you get it level in BOTH directions. Set-up and Installation Preparing the Milling Machine for Service 1. Remove any crating which may be covering the machine on the pallet. Mill must be supported equally under all four corners. Failure to comply may cause the column to twist and put a bind in the table ways. 2. Remove accessory items from the pallet or machine table. Compare these items with the list on the previous page. 10.
JTM-4VS Dimensions Figure 2: Installation Diagram 10
JTM-4VS Overview and Terminology Figure 3: Overview 11
Electrical Connections Operating Instructions All electrical connections must be made by a qualified electrician! Failure to comply may cause serious injury! Operating Controls The lubrication system is a manually operated, oneshot system requiring operator intervention. The operator must lower the one-shot lever to lubricate the machine ways and ball screws. The one-shot lubrication system reservoir is located on the left side of the machine.
Figure 6 Variable Speed Control Change speed only while the spindle is turning. The vari-speed handwheel (A, Figure 7) is used to control the spindle speed. The speeds for high and low speed ranges are displayed on the panel on the front of the mill head (B, Figure 7). All speed changes must be made while the motor is running. Attempting speed changes without the motor running can result in damage to the drive mechanism.
Do not move the Quill Power Feed Lever unless the motor is at a complete stop. When changing the lever position, do it gently. If the gear does not engage, jog the motor and allow it to stop before attempting to change. Spindle Brake The spindle brake lever is located on the upper left side of the mill head (Figure 8). Pull lever downward to apply the brake. The spindle brake lever is used only after the motor switch has been set to OFF. The spindle will not stop with the motor running.
Feed Trip Cam Lever Coarse Feed Handle The Feed Trip Cam Lever (A, Figure 12) is located on the left side of the head behind the Manual Fine Feed Handwheel (B, Figure 12). It engages the overload clutch on the pinion shaft when positioned to the left. The Feed Trip Cam Lever stays engaged until Quill Stop (C, Figure 15) comes in contact with Micrometer Adjusting Nut (A, Figure 15) forcing it to drop out automatically, or until it is released manually by engaging the lever to the right.
9. Select feed rate with the Variable Speed Control Handwheel (E). 10. Set the Feed Rate Lever (B) to the feed rate required for the tooling and material required. 11. Place the Quill Feed Engagement Lever (F) in the Engaged position. 12. Select feed direction by setting the Feed Direction Knob (C) position per the table: Depth Scale and Stop Referring to Figure 15: The Depth Scale and Stop are used in drilling operations to set the depth of the drilled hole.
Draw Bar Operation - Changing Tooling Adjustments 1. Using the wrench provided with the machine, loosen the draw bar two or three turns (turn counterclockwise) using the draw bar hex (Figure 18). Mill Head – Left/Right Adjustment Make sure the machine base is secured to the floor before repositioning the mill head. The center of gravity can shift enough to cause the machine to tip over, resulting in serious injury to the operator and damage to the machine. 1.
4. Before applying final torque, check to make sure the mill head is perpendicular to the worktable. 2. Returning to upright position: a. When returning the mill head to its full upright position, be sure to support the head by upward pressure on the spindle as you turn the worm nut. 5. Set up a dial indicator in a collet and secure using the draw bar (refer to Figure 22). b. Check to make sure the mill head is perpendicular to the worktable. 6. Put the spindle drive in neutral. 7.
Positioning the Ram Positioning the Ram Fore and Aft 1. Loosen the two bolts (A, Figure 23) that lock the ram to its ways. Figure 24 Adjustment of Knee Gib The knee gib adjustment screw (A, Figure 24) is located under the chip wiper at the rear of the knee where it contacts the column. Remove the way cover and the wiper to expose the gib adjustment screw. Tighten the screw until a slight drag is felt when turning the knee crank. Figure 23 2. Turn the lever (B, Figure 23) to move the ram on its ways.
power feed. If not, readjust the mechanism until positive disengagement occurs when the quill is at the top of its stroke. Power Feed Trip Lever Mechanism Refer to Figure 25. 10. Check for correct operation using the coarse feed handle. If operating correctly, start the drive motor and engage the power feed mechanism. Verify that the power feed lever correctly engages and disengages when driven by the drive motor.
4. Tighten the two nut locking screws. 5. Using the longitudinal table crank, move the table to the middle position. 6. Set up a dial indicator to check longitudinal backlash. Gently move the crank back and forth while watching the dial indicator. The backlash should be between 0.003 inch and 0.005 inch. If necessary, repeat the steps above to set backlash.
Maintenance Before any intervention on the machine, disconnect it from the electrical supply by pulling out the plug or switching off the main switch! Failure to comply may cause serious injury. Lubrication The milling machine is equipped with a “one-shot” lubrication system. The system lubricates the lead screws and ways. An oil cup and grease nipple on the mill head provide lubrication for the spindle bearings and back gear mechanism.
10. Slowly release pressure on hydraulic ram until the spring (ref. 8) is fully extended. Replacement of Drive Motor Refer to Figure 30 and Head Assembly in the Parts section. 11. Remove the lengthening shaft (ref. 106), spring stop washer (ref. 9), spring (ref. 8) and outermost pulley (ref. 5) from the motor shaft. 12. Loosen set screw (ref. 3) on innermost pulley (ref. 2). Remove the pulley (ref. 2) and drive key (ref. 7) from the motor shaft. 13. Install drive key (ref. 7) and pulley (ref.
Replacement of Vari-Speed Belt Refer to Figures 31 and 32, and Head Assembly in the Parts section. Disconnect electrical power to the machine before performing any maintenance. 1. Remove drive motor (refer to the Replacement of Drive Motor section). 2. Remove Quill Top Cover by removing three cap screws (Figure 31). 3. Remove six cap screws and remove the upper housing (Figure 32). Figure 33 6. Pull the pivot finger stud (ref. 58) out of the lower housing cover (ref. 50) and the brake pivot fingers (ref.
7. Install the replacement spring (ref. 178) in the spring cover (ref 177). Replacement of Quill Feed Clock Spring Refer to the Spindle Assembly in the Parts section. 8. Install end of spring (ref. 178) over the pin (ref. 168) on pinion shaft (ref. 166). Disconnect electrical power to the machine before performing any maintenance. 9. Install pin (ref. 168) in feed handle hub sleeve (ref. 176) on other end of spring (ref. 178). 1. Remove the coarse feed handle. 10. Turn the spring cover (ref.
Head Assembly 26
Parts List for Head Assembly Index No. Part No. Description Size Qty ................ JTM4VS-HA ............Head Assembly w/ Motor................................................................................. 1 1 .............. VS-001....................Upper Housing ............................................................................................... 1 2 .............. VS-002....................Motor Pulley ...................................................................................
Index No. Part No. Description Size Qty 55 ............ TS-1503061 ............Hex Socket Cap Screw .....................................M6 x 25 .................................. 1 56 ............ VS-056....................Brake Lock Handle ......................................................................................... 1 57 ............ VS-057....................Plastic Ball ..................................................................................................... 2 58 ............
Index No. Part No. Description Size Qty 115 .......... JTM4VS-A002B .......Draw Bar Washer ........................................................................................... 1 116 .......... VS-116....................Key ................................................................................................................ 1 117 .......... VS-117....................Oval Head Screw..............................................3/16” x 1/2”............................. 1 118 ..........
Spindle Assembly 30
Parts List for Spindle Assembly Index No. Part No. Description Size Qty 1 .............. TS-1533042 ............Screw ..............................................................M5 x 10 .................................. 6 2 .............. HA-002 ...................Bevel Pinion Washer....................................................................................... 1 3 .............. HA-003 ...................Feed Gear...............................................................................
Index No. Part No. Description Size Qty 78 ............ LA-082 ....................Overload Clutch Lockout ................................................................................. 1 79 ............ LA-083 ....................Safety Clutch Spring ....................................................................................... 1 80 ............ LA-084 ....................Overload Clutch ................................................46T ........................................ 1 .........
Index No. Part No. Description Size Qty 153 .......... LA-110 ....................Quill Lock Sleeve ............................................................................................ 1 155 .......... LA-043 ....................T-Bolt Assembly ............................................................................................. 4 156 .......... LA-046 ....................Spacer ...........................................................................................................
Base Assembly 34
Parts List for Base Assembly Index No. Part No. Description Size Qty 1 .............. LB-001 ....................Set Screw ........................................................M6 x30................................... 2 2 .............. LB-023 ....................Gear .............................................................................................................. 1 3 .............. LB-020 ....................Ram Adapter ...................................................................
Index No. Part No. Description Size Qty 57 ............ LK-022 ....................Washer .......................................................................................................... 1 58 ............ MK-021 ...................Bevel Gear ..................................................................................................... 1 59 ............ BB-6306ZZ ..............Ball Bearing....................................................................................................
Lead Screw Assembly Index No. Part No. Description Size Qty 1 .............. TS-0571052 ............Jam Nut ...........................................................1/2-20UNF ............................. 3 2 .............. LT-010C ..................Handle ........................................................................................................... 3 3 .............. LT-010B ..................Ball Crank ....................................................................................
One-Shot Lubrication System Index No. Part No. Description Size Qty ................ LT-8-A.....................Hand Oiler Assembly (includes index #1,1A,4,5, 9) ........................................... 1 1 .............. LT-8 ........................Hand Oiler...................................................................................................... 1 1A............ LT-8-SG ..................Hand Oiler Sight Glass (w/gasket) ...............................................................
Electrical Connections – Single Phase only 39
Electrical Connections – 3 Phase only WALTER MEIER (Manufacturing) Inc. 427 New Sanford Road LaVergne, Tennessee 37086 Phone: 800-274-6848 www.waltermeier.
