Mobile cooling lubricant monitoring system

Abstract

Mobile cooling lubricant monitoring system for machine tools comprising two sensors, a pH sensor (pH) and a conductivity sensor (Lf), a gateway (G) which is connected to the sensors (pH, Lf) and which forwards the information to a terminal device via a communication network (GSM), wherein the power supply of the sensors is via a two-wire connection between the gateway (G) and the sensors (pH, Lf) and the sensors (pH, Lf) are arranged on a floating body (SK) which can be inserted into a container of the cooling lubricant monitoring system which is filled with cooling lubricant.

Description

The invention relates to a mobile cooling lubricant monitoring system according to claim 1.The document WO2020 / 126457A1 discloses a complex coolant lubricant system in which a coolant lubricant emulsion is removed from a tank and partly returned to the tank.The publications DE9318849U1 disclose a multiparameter measuring probe which dips on a cable into a tank which is filled with a fluid.Various devices for fill level measurement are known from the publications DE102012102658A1, DE102016108594B3 and DE102013221223A1.There are also systems on the market (for example: cooling lubricant manager and sensor • LIQUIDTOOL, Fa. Liquid tool Systems AG), which, by measuring the concentration and temperature of the cooling lubricant, realize a monitoring of the cooling lubricant in machine tools. The systems are not of modular construction and usually require a WLAN connection on site.The object of the invention is to overcome these disadvantages.This object is achieved by a mobile cooling lubricant monitoring system according to claim 1.The invention is explained in more detail below with reference to an exemplary embodiment shown in the drawing.The following are shown: FIG. 1 shows floating bodies with two sensors FIG. 2 shows a measuring system according to the invention FIG. 3 shows a block diagram of the gatewayFIG. 1 shows a floating body SK with the two sensors, a sensor pH for the pH value and a sensor Lf for the conductivity of the cooling lubricant.FIG. 2 shows the mobile measurement system according to the invention for monitoring coolant lubricant.Fig. 3 shows a block diagram of the gatewayThe measurement system MS consists of a pH sensor pH and a conductivity sensor Lf (LDL 100, Fa ifm electronic gmbh), which transmit their measured values to a gateway (IO-Key Fa. ifm electronic gmbh) via IO link.The measured values are forwarded from the gateway to a terminal device, e.g. a smartphone, laptop, tablet etc., via a communication network, e.g. GSM network.Threshold values can also be stored in the gateway G in order, if appropriate, to actuate an actuator.The function of the invention is explained in more detail below.Floating bodies, AIK001, LDL100, DP2200, EVC cables and a pH sensor pH result in a mobile system for monitoring the cooling lubricant. By means of a SIM card, exceeding or falling below preset limit values are transmitted to the operator by email or SMS.The LDL100 measures temperature and conductivity. It was demonstrated in experiments that the conductivity increases with increasing oil content (2%, 4%, 6%). Conversely, when the user fills only water, the oil-water ratio changes. Thus, a change can be displayed and communicated properly.The pH sensor indicates when the KSS changes in the direction of "tipping.". Bacterial contamination of the KSS also has an effect on the pH. The user can thus also follow this indication on the basis of the changed measured values. The floating body SK could be fastened to the inner rim of the bowl by means of a magnetic holder.In the IO key, the pass and alert values may be easily set (or preset as desired) by the user. Thus, the customer would be able to obtain a preconfigured system.Advantages of the Inventionmodular construction as a system of standard components for simple monitoring of water-based cooling lubricant (CSS) in machine toolsRemovable system by addition of further sensor systems and software (fill level, monoeo) depending on the customer requirementReal-time analysis: data is continuously recorded and stored; retrievable and analyzable by users at any timeAdditional use of up to two outputs at the IO key in order to activate oil separators (band trimmers), centrifugal pumps or ifm signal lights etcMobile system (SIM card in the IO key) with floating body SK and mounted sensors, usable in any desired KSS basin shapes

Claims

Mobile cooling lubricant monitoring system for machine tools comprising two sensors, a pH sensor (pH) and a conductivity sensor (Lf), a gateway (G) which is connected to the sensors (pH, Lf) and which forwards the information to a terminal via a communication network (GSM), wherein the current is supplied to the sensors via a two-conductor connection between the gateway (G) and the sensors (pH, Lf) and the sensors (pH, Lf) are arranged on a floating body (SK) which can be inserted into a container of the cooling lubricant monitoring system filled with cooling lubricant.

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