Gantry type machine tool movable cross beam lifting synchronous detection device

Abstract

The invention provides a gantry type machine tool movable cross beam lifting synchronous detection device. The gantry type machine tool movable cross beam lifting synchronous detection device comprises a movable cross beam and two screw rods arranged on two sides of the movable cross beam and used to drive the movable cross beam to rise and fall, and further comprises two identical velocity measurement tooth discs, wherein each velocity measurement tooth disc and each screw rod which are located on the same side are set in synchronous rotation mode, each velocity measurement tooth disc is matched with an optoelectronic switch, the optoelectronic switches are installed vertically to the velocity measurement tooth discs, and when the two optoelectronic switches are installed or maintained, the optoelectronic switches need to synchronously face teeth of the two velocity measurement tooth discs directly or synchronously face tooth grooves of the two velocity measurement tooth discs directly, and a controller counts numbers of pulses of the two optoelectronic switches respectively, and compares a difference value W between the numbers of the two pulses with a value M. When the difference value W satisfies the equation that |W|>=M, the gantry type machine tool movable cross beam lifting synchronous detection device sends out an alarm, and controls a machine tool spindle drive motor and a movable beam lifting drive motor to stop, and the value M satisfies the equation that M=|E|*N / P, wherein E is the set maximum height difference of two portions of the movable cross beam, located on the two screw rods, N is the number of the teeth of each velocity measurement tooth disc, and P is the helical pitch of each screw rod.

Description

technical field [0001] The invention relates to an intelligent protection device in the mechanical equipment manufacturing industry, in particular to a synchronous detection device for lifting and lowering of a movable crossbeam of a gantry-type machine tool. Background technique [0002] The lifting movement of the movable beam of the gantry machine tool is driven by the screw provided on both sides. During the lifting process of the movable beam, if one side of the screw is driven by power failure or the screw is damaged, one side of the screw will run. The unilateral force on the movable beam may easily cause the movable beam to break. Therefore, a detection device must be used to detect whether the overall rise and fall of the beam is synchronized. According to the survey, some domestic equipment only monitor the rotating device. This kind of monitoring is not comprehensive. Even if the motor and the rotating device are running normally, due to the asynchrony of t...

AI Technical Summary

Problems solved by technology

According to the survey, some domestic equipment only monitor the rotating device. This kind of monitoring is not comprehensive. Even if the motor and the rotating device are running normally, due to the asynchrony of the rotating device, it will also cause certain hidden dangers. It will be found that, but over time, the accumulation of errors will also affect the synchronization at both ends of the beam, which will cause serious uneven force at both ends when processing workpieces

It may be relatively stable when the movable beam moves up and down, but it may cause accidents when processing workpieces

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