CN-117548701-B - Intelligent cutting tool with embedded temperature sensor and preparation method thereof

Abstract

The invention relates to an intelligent cutting tool with an embedded temperature sensor and a preparation method thereof, belonging to the technical field of cutting processing and advanced manufacturing. The invention provides an intelligent cutting tool with an embedded temperature sensor, which comprises a tool shank part and a cutting part, wherein the tool tip of the cutting part is provided with at least one mounting position, the mounting position is detachably provided with an intelligent blade, and at least one temperature sensing circuit comprising the temperature sensor is arranged in the intelligent blade. The temperature sensing circuit is arranged in the blade, the junction is arranged at the positions of the blade tip and the blade edge, the temperature measurement of the cutting area is accurate, and meanwhile, the blade is manufactured in an integrated layered mode based on the principle of additive manufacturing, so that the influence on the performance and the service life of the cutter is small.

Inventors

• XU JIE
• HAN YINGYI

Assignees

• 江南大学

Dates

Publication Date

20260505

Application Date

20231113

Claims (6)

1. 1. A method for preparing an intelligent blade of an intelligent cutting tool is characterized in that, The intelligent cutting tool comprises a tool shank part and a cutting part, wherein the cutting part is provided with a front tool face, a main rear tool face and an auxiliary rear tool face, and the intersection part of the front tool face, the main rear tool face and the auxiliary rear tool face forms a tool nose; a first lead and a second lead which are communicated with the cutter handle part and the cutting part are arranged in the intelligent cutting tool; The intelligent blade is provided with at least one cutting edge part capable of being used for cutting, at least one part of the pressing block is pressed against the upper part of the intelligent blade, at least one temperature sensing circuit comprising a temperature sensor is arranged in the intelligent blade, and the temperature sensing circuit is connected with the first lead and the second lead; The mounting position is a notch of the tool nose and is provided with a first mounting surface, a second mounting surface and a third mounting surface which are not parallel to each other, the first mounting surface is provided with a first lead electrode connected with the first lead, and the second mounting surface is provided with a second lead electrode connected with the second lead; each temperature sensing circuit comprises a first hot electrode and a second hot electrode which are connected by a node, wherein the first hot electrode and the second hot electrode are respectively provided with a first connecting part connected with the first lead electrode and a second connecting part connected with the second lead electrode; the method comprises the following steps: Step 1, preparing ceramic slurry, wherein the ceramic slurry comprises alumina ceramic slurry and photo-curing alumina ceramic slurry containing photo-curing agent; Step 2, preparing metal slurry, wherein the metal slurry comprises tungsten rhenium 5, tungsten rhenium 20 and copper slurry; Step 3, based on an additive manufacturing principle, the intelligent blade is manufactured by dividing the intelligent blade into two layers from outside to inside, wherein the outer layer material and the inner layer material of the intelligent blade respectively adopt photo-curing alumina ceramic slurry and alumina ceramic slurry containing photo-curing agents, the first hot electrode adopts tungsten-rhenium 5 slurry, the second hot electrode adopts tungsten-rhenium 20 slurry, and the first connecting part and the second connecting part both adopt copper slurry; Step 4, according to the blade layering in the step 3 and materials selected by the intelligent blade, the first hot electrode, the second hot electrode, the first connecting part and the second connecting part, based on a material extrusion process and an additive manufacturing principle, extrusion paths of different slurries are further obtained; step 5, blade forming, namely sequentially extruding various slurries according to extrusion paths of different slurries to form an intelligent blade; step 6, pre-treating the blade blank, namely further photocuring the formed intelligent blade, heating the intelligent blade to 600-800 ℃ under vacuum, and keeping the intelligent blade for 3-5 hours; step 7, calcining the blade, namely continuously heating to 1600-1800 ℃ and keeping for 2-5 hours, and naturally cooling to room temperature; step 8, blade post-treatment, namely removing impurities and foreign matters on the surface of the calcined intelligent blade, grinding the surface to be smooth and smooth, and exposing the first connecting part and the second connecting part on the surface; And 9, quality inspection, namely mounting the intelligent blade on a mounting position, measuring conduction and resistance, and judging the effectiveness of the thermocouple circuit.
2. 2. The method according to claim 1, wherein in the step 5, the extruded slurry is irradiated with curing light corresponding to a wavelength of light for curing at the time of extrusion of the light-cured alumina ceramic slurry.
3. 3. The method of claim 1, wherein the first lead electrode and the second lead electrode are each flexible electrodes.
4. 4. The method of claim 1, wherein the smart blade includes four temperature sensing circuits within the smart blade that are identical in structure.
5. 5. The method of claim 4, wherein the nodes are disposed inside the blade portion.
6. 6. The method of claim 4, wherein the first and second connection portions are exposed at different directional surfaces of the smart blade, respectively.

Description

Intelligent cutting tool with embedded temperature sensor and preparation method thereof Technical Field The invention relates to an intelligent cutting tool with an embedded temperature sensor and a preparation method thereof, belonging to the technical field of cutting processing and advanced manufacturing. Background The acquisition of status data of the manufacturing process by the sensors for research applications is the basis for implementing intelligent manufacturing equipment. The state of the cutting area in the cutting process directly influences and reflects the quality of the part, so that the position of a sensor in the machine tool in the intelligent manufacturing background is more and more approaching to the cutting area, and more direct and accurate state data are obtained. Mounting the sensor on the tool is a more viable option, since the material of the surface of the workpiece to be machined will be removed during the cutting process and the handling of the sensor on the workpiece will affect the production efficiency. In general, state parameters of cutting temperature, cutting force, cutting vibration, etc. can reflect the state of a cutting process, wherein the measurement of cutting temperature is simpler and more economical, and is widely applied in engineering. However, it is difficult to directly measure the cutting temperature of the cutting region due to interference of chips, cutting fluid, etc. during the cutting process. In order to be able to measure the cutting temperature of the cutting zone more efficiently, reliably and conveniently by means of a sensor, it is a reasonable option to embed the temperature sensor inside the tool and to bring it as close as possible to the cutting zone. In this regard, researchers have proposed some designs and implementation methods, but these designs do not implement embedding a temperature sensor into a tool without changing the cutting performance and service life of the tool, and the tool is not convenient enough to use, and there are still major problems in engineering applications, and the specific analysis is as follows: Patent CN102601399a proposes an intelligent tool comprising a tool body and a functional coating, the functional coating comprising a cutting coating on the tool body, a sensor sensing coating and an outermost protective coating, the cutting coating being applied on the tool body, the protective coating being applied on the surface of the sensor sensing coating, the sensor sensing coating being constituted by a piezoelectric film layer and an array of interdigital transducers integrated therein and a radio frequency antenna connected thereto. The functional coating of the cutter is realized through a coating process, the process is complex, the economy is poor, the binding force between a substrate and the functional coating is limited, the coating thickness is limited, the functional coating is easy to damage and lose effectiveness under the action of cutting force or after the cutter is worn during cutting, and in addition, the temperature measurement by an interdigital transducer array has high requirements on acquisition, processing and analysis, and the system is complex, low in reliability and poor in economy. Patent CN103111642a proposes an intelligent cutter based on a surface acoustic wave sensing system, the front end of the blade is fixed with a diamond cutter head, the blade at the rear side of the diamond cutter head is provided with a blade signal sensing area, and the surface acoustic wave sensing system is fixed in the blade signal sensing area on the blade. The scheme is based on the principle of acoustic surface wave sensing, has high requirements on signal acquisition, processing and analysis, is complex in system, low in reliability and poor in economical efficiency, and has poor temperature sensing capability on a cutting area from diamond to the head. Patent CN104942318a proposes an intelligent transient cutting temperature measuring tool, a manufacturing method and a temperature measuring method, wherein the tool comprises a tool body, a film thermocouple, an electrode, a circuit, a temperature acquisition terminal and the like, which are coated on the tool body. The film thermocouple comprises an insulating film coated on the cutter body, a first thermode coated on the insulating film, a second thermode, a Si3N4 protective film and a lead-out line. The scheme is based on the thermocouple principle to measure the temperature, is simple and convenient, but adopts plating to attach the thin film thermocouple and the Si3N4 protective film on the substrate, and the functional coating is easy to damage and lose efficacy under the action of cutting force or after the cutter is worn during cutting. Patent CN113732332A proposes a temperature sensing cutter which consists of a cutter body made of structural materials and a temperature sensing module made of thermal ceramics, wherein the cutter body and