JPS61205748U

JPS61205748U -

Info

Publication number: JPS61205748U
Application number: JP7326486U
Authority: JP
Priority date: 1986-05-14
Filing date: 1986-05-14
Publication date: 1986-12-25

Description

[Brief explanation of the drawing]

第１図はドリルにおける加工個数と負荷（スラ
スト力）パターンの変化を示すグラフ、第２図は
本考案装置の一例を示す要部断面図、第３図はバ
ネ要素の荷重一変位曲線の説明用グラフ、第４図
は本考案におけるバネ要素のスラスト力によるス
ライダの変位を示すグラフ、第５図は本考案にお
ける切削異常検出信号の処理要領の説明図、第６
図は本考案装置の全体のシステムを示すブロツク
線図である。１……切削工具、４……工具ホルダ、５……バ
ネ要素、６……バネ要素の予変位調整手段、１０
……変位検出器。 Figure 1 is a graph showing changes in the number of pieces processed and the load (thrust force) pattern in a drill, Figure 2 is a sectional view of the main part showing an example of the device of the present invention, and Figure 3 is an explanation of the load-displacement curve of the spring element. FIG. 4 is a graph showing the displacement of the slider due to the thrust force of the spring element in the present invention. FIG. 5 is an explanatory diagram of the processing procedure for the cutting abnormality detection signal in the present invention.
The figure is a block diagram showing the entire system of the device of the present invention. DESCRIPTION OF SYMBOLS 1... Cutting tool, 4... Tool holder, 5... Spring element, 6... Spring element pre-displacement adjustment means, 10
...Displacement detector.

Claims

[Scope of Claim for Utility Model Registration] A slider on which a cutting tool is replaceably mounted using a collet, etc., and a tool holder on which the slider is mounted so that it can slide in the axial direction of the cutting tool and rotate integrally with the cutting tool. , a spring element interposed between the axially opposing surfaces of the slider and the tool holder so that the spring element can be compressively displaced in the axial direction in proportion to the magnitude of the thrust force of the cutting tool; a pre-displacement adjustment means for a spring element fixed in an adjustable-movement manner and configured to apply an axial pre-compression displacement corresponding to a critical thrust force for wear or breakage of a cutting tool to the spring element via the slider; A shaft that is disposed on the tool holder side with a slight axial clearance between the axially opposing surfaces of the slider and the tool holder, and detects the occurrence of a thrust force greater than the critical thrust force for wear or breakage of the cutting tool. A cutting abnormality detection device comprising a directional displacement detector.