Automatic positioning device for full automatic balancing machine cutting point

Abstract

The automatic cutting point locating equipment for automatic balancing machine includes a movable worktable, a cutting head, a cutting tool, a rotor fixture, an insulating plate between the movable worktable and the cutting head, a rotating spindle in the cutting head, a DC power source with positive pole connected through a brush and a limiting resistor to the rotating spindle and negative pole connected to the fixture, and a monolithic computer. During operation, the cutting head driven with the movable worktable moves toward the rotor. The monolithic computer outputs one high level when the cutting tool does not contact with the rotor or one low level after the cutting tool contacts, so as to locate the cutting point. The present invention has simple structure and less environment influence.

Description

technical field [0001] The invention relates to an automatic positioning device for a cutting point of a fully automatic balancing machine, in particular to an automatic detection and positioning device for the contact point between a cutting deduplication tool and a processed rotor. Background technique [0002] Power tools are important production and daily necessities. Among them, due to the influence of material, manufacturing process and assembly, the rotor has an unbalanced amount. In this way, when the rotor rotates, it will vibrate, which will bring noise, shorten the life of the product and other adverse effects, and even bring danger. Therefore, the rotor must be dynamically balanced. [0003] In the production of electric tools, the correction equipment for the dynamic balance of the rotor can be divided into two categories, namely manual correction dynamic balance machines and automatic balance machines. The cost of manual calibration dynamic balancing machine ...

AI Technical Summary

Problems solved by technology

The ensuing problem is that when the outer diameter of the rotor is inconsistent or there is out-of-roundness due to technological problems in the rotor processing, when the jig where the rotor is placed is worn, the problem of inaccurate weight removal that occurs when the cutting amount is too large or too small

Moreover, when the weight cannot be completely removed in one cutting, and it is necessary to cut again at the same position, since a part has been cut off and the shape of the rotor has been changed, the phenomenon of repeated cutting at the same position without finding the reference will occur, and finally cannot complete deduplication

[0006] Literature - "Research on Dynamic Balancing Numerical Control Weight Removal System and Its Key Technology" "Mechanical and Electrical Engineering", 2005, Volume 22, Issue 5, Page 4-8, the method given is to judge the resistance between the tool and the rotor, because when the rotor and the tool When contacting, the resistance will suddenly become very small (that is, the contact resistance R→O), and the effective contact point can be judged by capturing this jump. This method is relatively simple, but the circuit in it passes between the cutter head and the cutter rod and the bearing When the tool bar rotates at high speed, there will be a layer of oil film between the tool bar and its bearing. Although the capacitive effect of the oil film can be used to generate a circuit loop, it also introduces high-frequency interference, thus affecting the reliability of the loop signal. Therefore, other circuits have to be used to filter out interference, which complicates the system

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