JPS6332749U

JPS6332749U -

Info

Publication number: JPS6332749U
Application number: JP12295386U
Authority: JP
Priority date: 1986-08-12
Filing date: 1986-08-12
Publication date: 1988-03-02

Description

[Brief explanation of the drawing]

第１図は本考案に係る切削状態監視装置の構成
を示すブロツク図、第２図、第３図及び第４図は
それぞれ従来の切削状態監視装置の構成を示すブ
ロツク図である。図面中、３は許容上限負荷演算器、４は切削負
荷検出器、５は主軸モータ、６は比較器、８は目
標負荷設定器、９は送り調節器、１０は切削条件
入力器、１１は工具情報記憶器、１２は材質情報
記憶器、１３は負荷演算器である。 FIG. 1 is a block diagram showing the configuration of a cutting condition monitoring device according to the present invention, and FIGS. 2, 3, and 4 are block diagrams showing the configuration of conventional cutting condition monitoring devices, respectively. In the drawing, 3 is an allowable upper limit load calculator, 4 is a cutting load detector, 5 is a spindle motor, 6 is a comparator, 8 is a target load setter, 9 is a feed adjuster, 10 is a cutting condition input device, and 11 is a 12 is a tool information storage device, 12 is a material information storage device, and 13 is a load calculator.

Claims

[Scope of utility model registration request]

A cutting condition input device into which the cutting conditions to be monitored from the machine tool are input, a tool information storage device in which information on the tools used for cutting is stored in advance, and a material information storage device in which information on the workpiece material is stored in advance. and a load calculator that calculates a maximum load generated during cutting and a preset target load based on information from the cutting condition input device, tool information storage device, and material information storage device, and input from the load calculation device. an allowable upper limit load calculator that calculates the allowable upper limit load from the maximum load and the margin factor input from the margin factor input device; a cutting load detector that detects the spindle motor current flowing to the spindle motor during cutting; a comparator that compares the allowable upper limit load input from the load calculator with the spindle motor current input from the cutting load detector and issues an alarm when the spindle motor current exceeds the allowable upper limit load; A target load setter that sets a target load based on the target load output from a computing unit compares the spindle motor current detected by the cutting load detector with the target load input from the target load setter. A cutting state monitoring device for a machine tool, comprising: a feed adjuster that adjusts the feed speed of the spindle motor so that the spindle motor current approaches the target load.