Jet JTM-1050 Operating Instructions And Parts Manual

Also see for JTM-1050: Operator's manual

1612.7 Mill head – angle setting1. Setting the angle:a. Loosen the three ram adapter clamp bolts(E, Figure 11). There is no need to loosen thebolts more than one-half (1/2) turn to allowtilting.Figure 11: Mill head movementb. Support the mill head with your free hand.Press upward on the spindle when changingthe angle.c. Turn ram adapter worm nut (F, Figure 11) totilt head forward and backward. Use scale onram adapter to locate desired angle.2. Returning to upright position:a. When returning mill head to full uprightposition, support head by upward pressure onthe spindle as you turn worm nut.b. Check to make sure mill head isperpendicular to worktable.c. Set up a dial indicator in a collet and secureusing the draw bar (refer to Figure 10).d. Put spindle drive in neutral.e. Set dial indicator plunger on worktable. Zerothe indicator.f. Rotate spindle 180 degrees. (When rotating,raise dial indicator plunger by hand to preventit from dropping into the table T-slots).g. Read dial indicator. The indicator shouldread zero. If not, loosen adaptor bolts (E,Figure 11) and reposition mill head.h. Recheck perpendicularity using dialindicator. Repeat procedure above until dialindicator reads zero in both positions.i. When indicator reads zero, tighten ramadapter clamp bolts (E, Figure 11).12.8 Ram movement12.8.1 Ram position fore and aftRefer to Figure 12.1. Loosen handles (G, Figure 12) that lock theram to its ways.2. Turn lever (H) to slide ram.3. When desired position is reached, lockhandles (G) securely.Figure 12: Ram positioning12.8.2 Rotating ram on turretRefer to Figure 12.Make sure machine base issecured to floor before repositioning ram. Thecenter of gravity can shift enough to causemachine to tip over, resulting in serious injuryto operator and damage to machine.1. Loosen four turret lock bolts (J, Figure 12) thatclamp the ram to the top of the base. One-half(1/2) turn should be sufficient to allow theturret to move.Note: Use gentle hand pressure to avoid rapidmovement.2. Swing the ram until spindle is in desiredposition. Use scale (I) on turret for degreemeasurement.3. Tighten the four turret lock bolts (J).12.9 Table MovementRefer to Figure 13.A. Longitudinal Movement (A, Figure 13) -handles located on opposite ends of table;control the X-axis.B. Stops (B) - located on front of table; limit howfar table travels in either direction.C. Table Locks (C) - located on front of saddle;used for locking table in position.D. Cross Feed Movement (D) - located on frontof knee; controls the Y-axis.E. Knee Handle (E) - located on corner of knee;controls the Z-axis.