A Digital Display Control System of a Digital Display Radial Arm Drilling Machine

Abstract

The invention provides a numerical display control system of a numerical display type radial drilling machine. A micro-control unit performs comprehensively analytic computation and sends an analog quantity to a spindle frequency converter, and is combined with a programmable logic device to complete pulse sending and record the number of pulses; the micro-control unit needs to be in bus communication with the programmable logic device and the programmable logic device serves as a memory of the micro-control unit for reading and writing; feedbacks to processing incremental signals by programming the programmable logic device include encoder signals of a feeding servomotor and an encoder fed back by a servo-driver, signals of a rotary encoder on a square external column of a rectangular guide rail, signals of an encoder on a spindle variable-frequency motor and signals of a grating scale on a rocker arm. According to the numerical display control system of the numerical display type radial drilling machine, stepless speed changing of a spindle can be realized without shutdown; graphic and numerical display can be realized at working positions; a number of revolutions of the spindle is directly displayed on a numerical display screen; besides, an amount of feed of the spindle is directly displayed on the numerical display screen; in short, the numerical display control system is applicable to machining industries.

Description

technical field [0001] The invention relates to a digital display control system of a digital display radial drilling machine in the mechanical processing industry. Background technique [0002] At present, in the mechanical processing industry, the radial drilling machine is a kind of machine tool used for single-piece or batch production of hole processing for large parts with holes. Generally, the spindle box can move on the rocker arm and rotate around the column with the rocker arm. The rocker arm moves up and down along the column to adapt to processing workpieces of different heights. Smaller workpieces are mounted on the table, and larger workpieces are placed directly on the machine base or the ground. Radial drilling machines are widely used in single-piece and small and medium-sized batch production to process holes in workpieces with large volume and weight. The main variants of radial drilling machines are slide type and universal type. The slide type radial...

AI Technical Summary

Problems solved by technology

[0003] There are still many deficiencies in the digital display control system of the radial drilling machine. The spindle cannot realize stepless speed change without stopping, the working position cannot realize the display of graphics and numbers, and the speed change knob cannot be directly rotated when the spindle is changing speed. The number of revolutions of the spindle is directly displayed on the screen; when the spindle feed is changed, the speed change knob cannot be directly rotated, and the feed amount of the spindle cannot be directly displayed on the digital display screen; because this speed change cannot realize non-stop speed change, and the number of revolutions needs to be selected , the operation control system is relatively backward, some operations are difficult to realize, the function is poor, and the failure rate is high

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