Songyou Intelligent Manufacturing: Fault in the Positive and Negative Tilt Angle Devices of Machine Tool Spindle Boxes

This function is to prevent the cutting disc from carrying a knife during milling, which affects the roughness of the machined surface. The inclination angle of the spindle box is adjusted by changing the position of the four wedges on the crossbeam, which are driven by the oil cylinder. The common fault in this area is tilt angle alarm.

When the CNC gantry milling machine is powered on, an alarm occurs. According to the PC program, each time the power is turned on, four V-shaped wheels press four micro switches. If there is an alarm, it indicates that at least one micro switch is not activated. E87.0, E87.1, E87.2 can be viewed from the monitor or programming controller

Is E87.3 all zero? Adjust the corresponding V-shaped wheel to press the micro switch, and move the wedge iron to zero position. When all four signals above are zero and E87.4=1, the situation is normal, the tilt indicator light is on, and the alarm is eliminated.

Whether it is an alarm when the CNC gantry milling machine is powered on or when changing the tilt angle, the general reasons can be summarized into four:

(1) The connecting nut between the oil cylinder and the wedge iron is loose. At this time, although the V-wheel carried by the oil cylinder has pressed the micro switch in place, the wedge iron

Not in place, tighten the loose nut and adjust the tilt angle again. Be sure to check the dimensional deviation from the wedge iron to the spindle box according to the drawing size requirements, and ensure that it is not too large.

(2) The loosening of the nut fixing the V-wheel causes the V-wheel to move,

Cannot press the limit switch normally. Be careful when adjusting to determine which V-wheel is not in place, and use a screwdriver to lightly press it. Force a signal to the suspected switch, and the corresponding wedge iron will move. At this point, slowly adjust the position of the V-shaped wheel.

(3) The breakage of the connecting rod between the oil cylinder and the V-wheel can also cause a report

Police. At this point, welding cannot be used for repair because it is difficult to ensure the coaxiality of both ends after welding, and the welding strength is poor. After a period of use, it may break. The measure taken at that time was to replace the connecting rod.

(4) Oil leakage from the oil cylinder causes the wedge iron to not move.