This .pdf document is bookmarked Operating Instructions and Parts Manual Step Pulley Turret Mill Model JTM-1, JTM-2 Model JTM-1 shown WALTER MEIER (Manufacturing) Inc. 427 New Sanford Road LaVergne, Tennessee 37086 Ph.: 800-274-6848 www.waltermeier.com Part No. M-690082 Revision G 02/2013 Copyright © 2013 Walter Meier (Manufacturing) Inc.
1.0 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.
2.0 Table of contents Section Page 1.0 Warranty and service ..................................................................................................................................... 2 2.0 Table of contents............................................................................................................................................ 3 3.0 Safety warnings...................................................................................................................................
safety equipment, such as face or dust masks that are specifically designed to filter out microscopic particles. 12. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication. 3.0 Safety warnings 1. Read and understand the entire owner's manual before attempting assembly or operation. 13. Make certain the switch is in the OFF position before connecting the machine to the power supply. 2. Read and understand the warnings posted on the machine and in this manual.
28. Maintain a balanced stance at all times so that you do not fall into the cutter or other moving parts. Do not overreach or use excessive force to perform any machine operation. 33. Do not stand on the machine. Serious injury could occur if the machine tips over. 34. Never leave the machine running unattended. Turn the power off and do not leave the machine until it comes to a complete stop. 29. Use the right tool at the correct speed and feed rate.
5.
6.0 Specifications Model Number .......................................................................................... JTM-1............................................ JTM-2 Stock Number ......................................................................................... 690082........................................... 690089 Motor and Electricals: Motor type ............................................................................................ induction.......
7.0 JTM-1/JTM-2 Features and Terminology Figure 2: Features and Terminology (JTM-1 shown) 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 1. 2. 3. 4. 5. 6. 7. 20. 21. 22. 23. 24. 25. 26.
8.2 Contents of shipping container 8.0 Setup and Assembly Note: Some parts may be pre-installed on the mill. 1 Turret Mill (not shown) 1 Flat Way Cover 1 Pleated Way Cover 1 Draw Bar 3 Table Adjustment Handles 2 Belt Guards 1 Tool Box, containing (Figure 3): 1 Hex Key Set (1.
cause the column to twist and put a bind in the ways. 8.3 Site preparation The mill must be placed on an even surface and bolted to the floor. Anchor bolts of sufficient size and length must be fastened to the floor according to the mill’s footprint. See the site installation diagram in Figure 1. 8.5 Completing assembly Before attempting to raise mill head, familiarize yourself with instructions in section 12.1, for procedures to safely raise and set up the mill head. 8.
prevent motor overheating and burnout, the use of wire sizes for branch circuits or electrical extension cords according to the following table is recommended: 11. Unwrap and clean elevating (knee) crank and install it on its shaft. 12. Install rubber way covers at front and behind table. Conductor Length 13. Install belt guards. 8.6 Lubrication 0 – 50 Ft. 50 – 100 Ft. Over 100 Ft. Do not operate this milling machine before fully lubricating it. Failure to comply may damage machine.
J. Change speed range only when motor is NOT running. C. Spindle Brake (C, Figure 5) – Move in either direction to prevent spindle from turning. Manual Fine Feed Handwheel (J, Figure 5) – Feed reversing knob (K, Figure 5) must be in neutral position. The feed trip lever (I, Figure 5) must be engaged. Note: Manual feed handwheel may be removed when not in use. K. Feed Reversing Knob (K, Figure 5) – located in center of manual feed handwheel. Position of knob depends upon direction of spindle rotation.
11.0 Operations 11.1 Operating precautions Observe the instructions before using this mill. following 1. Verify that spindle brake is released before starting motor. 2. Rotate spindle by hand to facilitate meshing of clutch and gears. 3. Do not use quill power feed at speeds above 2700 RPM. 4. It is recommended that power feed worm gear be disengaged whenever power feed is not required. This will avoid unnecessary wear on worm gear. 5. 6. 7. 8. 9. Figure 6 11.
2. Position feed reversing knob (K) in the center at neutral position. 9. Set Feed Rate Lever (M) to the feed rate required for the tooling and material used. 3. Engage feed trip lever (I) by pulling away from head assembly. 10. Place Quill Feed Engagement Lever (E) in the Engaged position. 11. Select feed direction by setting the Feed Direction Knob (K) position per Table 2: Spindle Dir. CW CCW Feed Dir. Knob Pos. Down In Up Out Down Out Up In Table 2 Figure 7 12.
11.7 Draw bar operation; changing tooling The drawbar has 7/16”-20 right hand threads and should be tightened with normal pressure using provided wrench. To remove a tool: 1. Lock spindle by turning spindle brake (C, Figure 8) left or right. 2. Use provided wrench to loosen draw bar two or three turns (counterclockwise). 3. If collect does not open immediately, tap the top of draw bar with a soft-faced hammer to loosen collet from taper. 4. Remove tool from collet. 5. Insert new tool into collet.
12.3 Positioning ram 12.2 Head movement: Fore and aft 1. 12.3.1 Sliding ram fore and aft Setting the angle: 1. a. Loosen the three ram adapter locking bolts (A, Figure 10). It is unnecessary to loosen the bolts more than one-half (1/2) turn to allow tilting. Loosen two bolts (A, Figure 11) that lock ram to its ways. Figure 11: Ram positioning 2. Turn lever (B, Figure 11) to move ram on its ways. 3. When desired position is reached, lock bolts (A, Figure 11) securely. Figure 10: Head movement b.
12.5.3 Table gib Loosen table locking handles. The table gib adjustment screw (C, Figure 13) is on the left-hand side, beneath table. Tighten screw until slight drag is felt when turning longitudinal table cranks. 12.6 Table lead screw backlash adjustment Refer to Figure 14. The milling machine table is moved by a lead screw and nut for each machine axis. For proper operation, there must be clearance between lead screw and nut, which results in backlash.
4. Tighten the two nut locking screws. 5. Using one of the longitudinal table cranks, move table to middle position. 6. Set up a dial indicator to check longitudinal backlash. Gently move crank back and forth while watching dial indicator. The backlash should be between 0.003 inch and 0.005 inch. 7. If necessary, repeat the above steps to set backlash.
13.0 Maintenance Before any intervention on machine, disconnect it from electrical supply by pulling out plug or switching off main switch! Failure to comply may cause serious injury. 13.1 Lubrication The milling machine is equipped with a “one-shot” lubrication system. The system lubricates the lead screws and ways. Oil cups provide lubrication for spindle bearings and back gear mechanism. Refer to Table 3 and Figures 15/16 for lubrication requirements and access points.
14.0 Belt position – speed ranges Figure 15: Belt position 15.0 Replacement Parts Replacement parts are listed on the following pages. To order parts or reach our service department, call 1800-274-6848 Monday through Friday (see our website for business hours, www.waltermeier.com). Having the Model Number and Serial Number of your machine available when you call will allow us to serve you quickly and accurately.
15.1.
15.1.2 Upper Head Assembly – Parts List Index No Part No Description Size Qty 1 ................ LA-072....................... Draw Bar.................................................................. R8 ................................. 1 2 ................ JTM4VS-A002B ........ Draw Bar Washer .................................................... ...................................... 1 3 ................ LA-071....................... Upper Bearing Lock Nut .......................................... .
Index No Part No Description Size Qty 73 .............. JTM1-C73 ................. Lock Washer ............................................................ ...................................... 1 74 .............. LA-059....................... Bearing Lock Nut ..................................................... ...................................... 1 75 .............. JTM1-C75 ................. Hardened Nut .......................................................... 7/16” ............................
15.2.
15.2.2 Head Assembly – Parts List Index No Part No Description Size Qty .................. LA-166A .................... Worm Gear Cradle Assembly (includes #1-17,36,37,40) ............................... 1 1 ................ TS-1533042 .............. Screw....................................................................... M5x10 ........................... 6 2 ................ HA-002 ...................... Bevel Pinion Washer ............................................... ...........................
Index No Part No Description Size Qty 80 .............. LA-084....................... Overload Clutch ....................................................... ...................................... 1 81 .............. LA-085....................... Overload Clutch Sleeve ........................................... ...................................... 1 82 .............. LA-090....................... Key........................................................................... ..........................
Index No Part No Description Size Qty 161 ............ LA-115....................... Quill Micro-Stop Nut................................................. ...................................... 1 162 ............ LA-116....................... Micrometer Nut ........................................................ ...................................... 1 163 ............ LA-117....................... Quill Stop Knob ........................................................ ................................
15.3.
15.3.2 Base Assembly – Parts List Index No Part No Description Size Qty 1 ................ LB-001....................... Hex Socket Cap Screw............................................ M6 x30 .......................... 2 2 ................ LB-023....................... Gear ......................................................................... ...................................... 1 3 ................ LB-020....................... Ram Adapter.........................................................
Index No Part No Description Size Qty 60 .............. MK-019...................... Bearing Retainer Ring ............................................. ...................................... 1 61 .............. MK-016...................... Elevating Screw ....................................................... ...................................... 1 62 .............. LK-037....................... Handle ..................................................................... .............................
15.4.1 Table Leadscrew Assembly – Exploded View 15.4.2 Table Leadscrew Assembly – Parts List Index No Part No Description Size Qty 1 ................ TS-0571052 .............. Jam Nut ................................................................... 1/2-20UNF .................... 3 2 ................ LT-010C .................... Handle ..................................................................... ...................................... 3 3 ................ LT-010B ....................
15.5.1 One-Shot Lubrication System – Exploded View 15.5.2 One-Shot Lubrication System – Parts List Index No Part No Description Size Qty .................. LT-8-A ....................... Hand Oiler Assembly (includes #1,1A,4,5,9) ........... ...................................... 1 1 ................ LT-8 ........................... Hand Oiler................................................................ ...................................... 1 1A .............. LT-8-SG ....................
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WALTER MEIER (Manufacturing) Inc. 427 New Sanford Road LaVergne, Tennessee 37086 Phone: 800-274-6848 www.jettools.com waltermeier.
