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7.8.7.2
Establishing Machine Zero Positions
The correct position of machine zero for an axis allows the full axis stroke
to be obtained and aligns the axis with other machine components like the
ATC, APC, etc. Machine zero is set at the factory and does not change
unless the relationship between a ball screw and servo motor changes.
After maintenance functions such as ball screw or servo motor replace-
ment, machine zero for that axis must be reset. Machine wrecks that
result in ball screw-to-motor coupling slippage also requires resetting
machine zero.
The V55 uses absolute position pulse coders in the servo motors. This
means that the machine zero positions are always remembered (stored),
even through a machine power Off and On sequence. Even though
machine zero is stored, the PMC software requires that all machine axes
be aligned by performing a reference operation at machine power On.
When an axis is referenced, it is aligned to pulse coder marker pulse. This
is not the “true” machine zero position. Machine zero is typically a position
that is shifted from the pulse coder marker pulse by a value set into the
Grid Shift parameter 1850. Parameter 1850 provides the ability to shift all
machine axes separately.
This section describes how to determine the machine zero position for
each axis and the setting values for Grid Shift parameter 1850.
Parameter 1850 Setting Values:
Parameter 1850 setting values are entered as “detection units” in the
range of ±99999999. Since the V55 uses metric ball screws, one
detection unit is equal to the least input increment of the metric mode.
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One detection unit = 0.001mm
Grid Shift Parameter 1850
The true axis reference position may be adjusted in the plus or minus direction from
the grid point by setting Grid Shift parameter 1850. The value set into 1850 tells the
CNC to add or subtract the set value from the pulse coder grid point.
The setting value for parameter 1850 is in detect units and is based on the metric sys-
tem. One detect unit is equal to 0.001 mm. After changing parameter 1850, power
must be turned Off and back On, before the parameter change becomes effective.
Summary of Contents for V55
Page 6: ...vi...
Page 32: ...1 24 NOTES SKETCHES...
Page 37: ...4V2A1563 E 2 3 FIGURE 2 1 SPINDLE POWER AND TORQUE CHARACTERISTICS...
Page 39: ...4V2A1563 E 2 5 FIGURE 2 2 AXIS CONFIGURATION TRAVEL AND WORK CUBE...
Page 41: ...4V2A1563 E 2 7 FIGURE 2 4 WORKPIECE SIZE LIMITATIONS...
Page 53: ...4V2A1563 E 2 19 FIGURE 2 6 FLOOR SPACE FOR STANDARD MACHINE...
Page 58: ...2 24 F IGURE 2 7 V55 WITH 25 TOOL ATC...
Page 59: ...4V2A1563 E 2 25 F IGURE 2 8 V55 WITH 25 TOOL ATC AND LIFT UP CHIP CONVEYOR LEFT...
Page 60: ...2 26 F IGURE 2 9 V55 WITH 25 TOOL ATC AND LIFT UP CHIP CONVEYOR RIGHT...
Page 61: ...4V2A1563 E 2 27 F IGURE 2 10 V55 WITH 25 TOOL ATC LIFT UP CHIP CONVEYOR LEFT AND APC...
Page 62: ...2 28 F IGURE 2 11 V55 WITH 25 TOOL ATC LIFT UP CHIP CONVEYOR RIGHT AND APC...
Page 63: ...4V2A1563 E 2 29 F IGURE 2 12 V55 WITH 40 OR 80 TOOL ATC...
Page 64: ...2 30 F IGURE 2 13 V55 WITH 40 OR 80 TOOL ATC AND LIFT UP CHIP CONVEYOR LEFT...
Page 65: ...4V2A1563 E 2 31 F IGURE 2 14 V55 WITH 40 OR 80 TOOL ATC AND LIFT UP CHIP CONVEYOR RIGHT...
Page 66: ...2 32 F IGURE 2 15 V55 WITH 40 OR 80 TOOL ATC LIFT UP CHIP CONVEYOR LEFT AND APC...
Page 67: ...4V2A1563 E 2 33 F IGURE 2 16 V55 WITH 40 OR 80 TOOL ATC LIFT UP CHIP CONVEYOR RIGHT AND APC...
Page 68: ...2 34 NOTES SKETCHES...
Page 93: ...4V2A1563 E 3 23 FIGURE 3 6 LEVELING BASE POSITIONS AND BED TO FLOOR CLEARANCE...
Page 94: ...3 24 NOTES SKETCHES...
Page 99: ...4V2A1563 E 4 3 FIGURE 4 1 MACHINE CORE ELEMENTS...
Page 103: ...4V2A1563 E 4 7 FIGURE 4 3 MAKINO PROFESSIONAL 3 CONTROL WITH MPC5...
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Page 123: ...4V2A1563 E 5 5 FIGURE 5 1 BASIC TROUBLESHOOTING FLOW CHART...
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Page 191: ...4V2A1563 E 5 73 TEC F IGURE 5 26 S CHEMATIC PAGE FORMAT...
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Page 202: ...NOTES SKETCHES...
Page 227: ...4V2A1563 E 6 25 NOTES SKETCHES...
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Page 261: ...4V2A1563 E 6 59 FIGURE 6 36 SPINDLE HYDRAULIC CIRCUIT...
Page 267: ...4V2A1563 E 6 65 FIGURE 6 40 L PORT SPINDLE LUBRICATION...
Page 269: ...4V2A1563 E 6 67 FIGURE 6 41 V PORT SPINDLE LUBRICATION...
Page 277: ...4V2A1563 E 6 75 NOTES SKETCHES...
Page 279: ...4V2A1563 E 6 77 FIGURE 6 48 SEALING ROD INSTALLATION...
Page 284: ...6 82 NOTES SKETCHES...
Page 293: ...4V2A1563 E 7 5 F IGURE 7 3 AXIS DRIVE CIRCUIT...
Page 297: ...4V2A1563 E 7 9 NOTES SKETCHES...
Page 309: ...4V2A1563 E 7 21 FIGURE 7 12 BALL SCREW COOLING OIL AND TAC BEARING LUBRICATION PIPING...
Page 311: ...4V2A1563 E 7 23 NOTES SKETCHES...
Page 317: ...4V2A1563 E 7 29 FIGURE 7 18 BALL SCREW PRE TENSION PROCEDURE...
Page 346: ...7 58 NOTES SKETCHES...
Page 348: ...7 60 FIGURE 7 35 Y AXIS COVER SYSTEM...
Page 351: ...4V2A1563 E 7 63 NOTES SKETCHES...
Page 369: ...4V2A1563 E 7 81 NOTES SKETCHES...
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Page 439: ...4V2A1563 E 9 5 NOTES SKETCHES...
Page 441: ...4V2A1563 E 9 7 F IGURE 9 3 OIL CONTROLLER ELECTRICAL DRAWINGS...
Page 443: ...4V2A1563 E 9 9 FIGURE 9 4 OIL CONTROLLER MACHINE SYSTEM...
Page 464: ...9 30 NOTES SKETCHES...
Page 468: ...NOTES SKETCHES...
Page 490: ...A 22 NOTES SKETCHES...
Page 525: ...4V2A1563 E A 57 NOTES SKETCHES...
Page 526: ...A 58 NOTES SKETCHES...
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