Internal circulation photoelectric type edge finder

Abstract

The invention relates to an internal circulation photoelectric type edge finder which comprises an end cover, an electric conduction body, a resistor, a double-spring component, an insulation sleeve, a battery, a ceramic gasket and a probe. The electric conduction body is of a cylindrical structure with a circular-ring-shaped baffle ring at one end and unequal-diameter through holes in the middle, the probe is arranged at the end, provided with the baffle ring, of the electric conduction body through the double-spring component in the through holes of the electric conduction body, the end cover is provided with a switch and is connected with the other end of the electric conduction body, the ceramic gasket is arranged between the probe and the electric conduction body and is connected with the electric conduction body, the battery and the resistor are arranged in the through holes of the electric conduction body, the insulation sleeve is arranged between the double-spring component and the inner walls of the through holes of the electric conduction body, and in the working state, the switch, a power source, the resistor, the double-spring component, the probe and the baffle ring form a work loop. According to the edge finder, edge finding operation can be performed on all parts (conductive and non-conductive parts), and the edge finder has the advantages of being simple in structure, short in response time, easy to operate, wide in application range and the like.

Description

technical field [0001] The invention relates to an edge finder used in numerical control machining technology, in particular to an inner circulation photoelectric edge finder. Background technique [0002] The outer loop (also called external series) photoelectric edge finder is a cyclic loop formed by the conductivity of external media such as machine tools and parts, so that the edge finder emits sound and light signals. It is the most widely used one among the existing photoelectric edge finder. An insulating layer is arranged in the middle of the edge finder, and the two poles of the power supply are respectively defined at two ends separated by the insulating layer. The contact part is a Φ10mm spherical probe, which is connected with the body by a spring, which can be stretched freely, and can play a protective role when the contact parts are over-traveled. [0003] Usually the body of the machine tool is generally made of metal and has electrical conductivity. When ...

AI Technical Summary

Problems solved by technology

[0005] 1. The edge-seeking operation cannot be performed on non-conductive (such as rubber, resin, etc.) parts. The parts are not conductive and cannot form a circuit

[0006] 2. The response time of the outer loop is slow, and it is easily disturbed by the external environment, which affects the response time of the loop and causes accumulated errors

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