Operating and Maintenance Manual Machine Parts | 6 1 MACHINE PARTS The selected basic machine parts of the milling head are shown in the figure below (Error! Reference source not found.). The legend is located above the figure, and the numbering is obtained from the modelling programme (skipping certain numbers is not an error). The milling head is either delivered as a part of the machine (and is thus mounted on the spindle head) or externally, i.e. not mounted on the spindle head. Legend: 50 Locking ring 89 Tapered pin with inner thread 52 C axis body 90 Cylindrical head screw 53 Main bearing tube 91 Cylindrical reinforcement screw 54 Spindle 92 Cylindrical head screw 55 Ring between front bearings of the spindle – bottom 93 Cylindrical head screw 56 Ring between front bearings of the spindle – top 94 Cylindrical head screw 57 Oil-catch ring – back 95 Cylindrical head screw 58 Labyrinth ring 97 C axis cover 59 KMTA nut 98 C axis seal 60 Gearwheel washer 99 Round head screw 61 Cover ring 100 Round head screw 62 Output gearwheel 101 Cylindrical reinforcement screw 63 Spacing tube 102 Cylindrical head screw 65 Spindle stone 103 Cylindrical reinforcement screw 66 Bearing 104 Cylindrical head screw 67 Bearing 105 Cylindrical head screw 68 Clamp check ring 106 Hex screw 69 Spindle bearing flange 107 Spring 70 Bronze flange ring 108 Tight spring 72 Distribution cylinder 109 Stopper 73 Clamp washer 110 Low cylindrical head screw 74 Pressure oil seal 111 Tapered pin with inner thread 75 Pressure oil seal 112 O-ring 76 Gearwheel cover 113 O-ring 77 Stopper 114 O-ring 79 Stopper 87 Cylindrical head screw 88 Cylindrical head screw Operating and Maintenance Manual Milling Head Lubrication | 7 2 MILLING HEAD LUBRICATION Lubrication of the milling head is performed by a pump located on the spindle head (Figure 6), which pumps oil from the spindle head refrigerator into the milling head via the feeder canal and drains the oil back into the refrigerator via the draining canal. To lubricate wheels, an oil with classification ISO VG 22 is used; most often MOGUL HM 22. The same oil is also used to cool the bearings in the head’s spindle. Figure 6 Diagram of the uncovered spindle head and the pump Legend: 1 Pump Lubrication is initiated automatically upon turning on the machine. The oil pressure for milling head lubrication is 2.5 bar. The oil levels for wheel lubrication can be monitored via the oil level gauge located on the front of the head (Figure 7). Figure 7 Oil level gauge Operating and Maintenance Manual List of Figures and Tables | 9 3 MAINTENANCE AND REPAIR 3.1 Maintenance Maintenance of milling head by the customer (operator) is performed by monitoring the overall state of the device and cleaning it using non-aggressive measures and tools. Careful handling is necessary during machine maintenance, which is to be performed only when the machine is turned off or when the part of the machine under maintenance is demounted from the machine. Tampering with the machine is not permitted and any actions leading to tampering with the device are first to be discussed with service technicians of the manufacturer or persons authorized by the manufacturer. 3.2 Repair Repair is always performed by service technicians of the manufacturer or persons authorized by the manufacturer.