JPH0187224U

JPH0187224U -

Info

Publication number: JPH0187224U
Application number: JP18347987U
Authority: JP
Priority date: 1987-11-30
Filing date: 1987-11-30
Publication date: 1989-06-08
Also published as: JPH0447632Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の工具折損検出器１
０の電気的構成を示すブロツク図、第２図は瓔珞
線検波回路１３の原理を示す電気回路図、第３図
は工具折損検出器１０の各構成部分の信号波形図
、第４図はハイパスフイルタ１４の原理を示す電
気回路図、第５図は工具折損検出器１０に適用さ
れる包絡線検波回路１３及びハイパスフイルタ１
４の具体的な電気回路図、第６図は従来の工具折
損検出器１の電気的構成を示すブロツク図、第７
図は包絡線検波回路４の具体的な電気回路図、第
８図は包絡線検波回路４の動作を示す波形図であ
る。１０……工具折損検出器、１１……振動検出素
子、１３……包絡線検波回路、１４……ハイパス
フイルタ、１７……比較回路。 Figure 1 shows a tool breakage detector 1 according to an embodiment of the present invention.
2 is an electric circuit diagram showing the principle of the wire detection circuit 13, FIG. 3 is a signal waveform diagram of each component of the broken tool detector 10, and FIG. 4 is a high-pass An electric circuit diagram showing the principle of the filter 14, FIG. 5 shows the envelope detection circuit 13 and the high-pass filter 1 applied to the tool breakage detector 10.
4 is a specific electrical circuit diagram, FIG. 6 is a block diagram showing the electrical configuration of the conventional tool breakage detector 1, and FIG.
The figure is a specific electric circuit diagram of the envelope detection circuit 4, and FIG. 8 is a waveform diagram showing the operation of the envelope detection circuit 4. 10... Tool breakage detector, 11... Vibration detection element, 13... Envelope detection circuit, 14... High pass filter, 17... Comparison circuit.

Claims

[Claims for Utility Model Registration] Abnormal vibration state detection of a vibrating body by detecting the vibration waveform of the vibrating body and detecting an abnormal vibration waveform superimposed on the steady vibration waveform of the vibrating body to detect the abnormal vibration state of the vibrating body. A vibration detection element that converts the vibration of a vibrating body into an electrical signal according to a change in the vibration level, and a circuit that detects the envelope of the detection signal from the vibration detection element, the circuit detecting the rise or rise of the detection signal. Such an envelope detection circuit outputs a detected signal that follows one of the falling edges and has a slowly changing signal waveform on the other, and a high-pass filter that high-pass filters the detected signal from the envelope detection circuit. and the level of the output signal from the high-pass filter,
1. An abnormal vibration state detector for a vibrating body, comprising a comparison circuit that compares the vibration state with a predetermined reference level.