CN202985257U - Cutting temperature measuring device - Google Patents

Abstract

A cutting temperature measuring device, comprising a thin film thermocouple temperature measuring cutter head, a conditioning circuit, a data acquisition card, and a PC, the thin film thermocouple temperature measuring cutter head is connected to the conditioning circuit, the conditioning circuit is connected to the data acquisition card, and the data acquisition card is connected to the PC . The beneficial effects of the utility model are: simple structure, convenient use, real-time, fast and accurate measurement of cutting temperature, good measurement effect and high measurement efficiency.

Description

A cutting temperature measuring device

technical field

The utility model relates to a device for measuring temperature, in particular to a cutting temperature measuring device.

Background technique

Cutting temperature is one of the most important factors affecting high-speed cutting. Its changing law is an important part of studying cutting principles and processing laws. It affects the machining accuracy of workpieces, the selection of cutting tool materials, the setting of cutting parameters and the arrangement of cutting processes. Therefore, it is of great significance to study the cutting temperature.

There are many methods for measuring cutting temperature, mainly natural thermocouple method, artificial thermocouple method, semi-artificial thermocouple method, radiation temperature measurement method, etc. These methods have their own characteristics, but there are certain deficiencies, the deficiencies lie in the following points:

1. The natural thermocouple has a certain hysteresis to the changing temperature, and the dynamic response is slow. When the tool or workpiece material is changed, the thermocouple needs to be recalibrated, which limits the flexibility of its use;

2. Although the semi-artificial thermocouple method is more flexible in application, if the tool material is used as one pole of the thermocouple, it is difficult to embed the other pole of the thermocouple into the superhard tool. When the cutting area is in contact with the thermocouple It is impossible to determine what is happening in the cutting area and the contact time is very short;

3. Infrared radiation temperature measurement method is simple to use and responds quickly, but the complexity of the emissivity parameters on the surface of the material affects the measurement of the actual temperature of the measured object. Cooling fluid is often added during the processing process, which will also affect the performance of infrared temperature measurement. accuracy. the

Utility model content

The utility model aims to solve the above-mentioned problems in the prior art, and provides a cutting temperature measuring device, which can measure the cutting temperature in real time, quickly and accurately.

The technical solution adopted by the utility model to solve its technical problems: this cutting temperature measuring device includes a thin-film thermocouple temperature measuring cutter head, a conditioning circuit, a data acquisition card, a PC, and a thin-film thermocouple temperature measuring cutter head is connected to the conditioning circuit, and the conditioning The circuit is connected to the data acquisition card, and the data acquisition card is connected to the PC.

The thin-film thermocouple temperature-measuring cutter head includes a numerically controlled cutter, and the numerically controlled cutter is coated with a NiCr hot electrode and a NiSi hot electrode.

The NiCr thermode is connected to the conditioning circuit through the NiCr wire, and the NiSi thermode is connected to the conditioning circuit through the NiSi wire.

The conditioning circuit includes a cold junction compensation circuit and a signal conditioning circuit.

There is a cutting temperature collection interface on the PC.

The principle of the utility model is: the thermocouple of the thin-film thermocouple temperature measuring cutter head is close to the cutting edge, and the temperature signal is measured, and the signal is sent to the conditioning circuit through the NiCr wire and NiSi wire, and the cold end compensation circuit and the signal conditioning circuit perform signal processing. Processing, the processed signal is sent to the data acquisition card, the data acquisition card collects the signal, and the collected signal is sent to the PC, and the cutting temperature collection interface on the PC displays, analyzes and stores the signal to complete the cutting temperature measurement the process of.

The beneficial effects of the utility model are: the cutting temperature measuring device of the utility model has a simple structure, is convenient to use, can measure the cutting temperature in real time, quickly and accurately, has good measurement effect and high measurement efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is a block diagram of the utility model.

Explanation of reference signs: film thermocouple temperature measuring cutter head 1, numerical control tool 1-1, conditioning circuit 2, cold junction compensation circuit 2-1, signal conditioning circuit 2-2, data acquisition card 3, PC 4, cutting temperature Collection interface 4-1, NiCr hot electrode 5, NiCr wire 5-1, NiSi hot electrode 6, NiSi wire 6-1.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

Referring to the accompanying drawings: the cutting temperature measuring device in this embodiment includes a thin-film thermocouple temperature measuring cutter head 1, a conditioning circuit 2, a data acquisition card 3, and a PC 4, and the thin-film thermocouple temperature measuring cutter head 1 is connected to the conditioning circuit 2, The conditioning circuit 2 is connected to the data acquisition card 3 , and the data acquisition card 3 is connected to the PC 4 .

The thin-film thermocouple temperature measuring cutter head 1 includes a numerically controlled cutter 1-1, and the numerically controlled cutter 1-1 is coated with a NiCr thermal electrode 5 and a NiSi thermal electrode 6 .

The NiCr thermode 5 is connected to the conditioning circuit 2 through the NiCr wire 5-1, and the NiSi thermode 6 is connected to the conditioning circuit 2 through the NiSi wire 6-1.

The conditioning circuit 2 includes a cold junction compensation circuit 2-1 and a signal conditioning circuit 2-2.

The PC 4 is provided with a cutting temperature acquisition interface 4-1.

The CNC tool 1-1 can be made of polycrystalline cubic boron nitride material, which is hard and has good insulation. The thermocouple of the thin-film thermocouple temperature measuring tool head 1 can be coated with a layer of Al ₂ O ₃ insulating layer, Al ₂ O ₃ is the main component of ceramics, the material is hard, it can not only play the role of insulation, but also protect the thermocouple.

When in use, the thermocouple of the thin-film thermocouple temperature measuring cutter head 1 is close to the cutting edge, and the temperature signal is measured, and the signal is sent to the conditioning circuit 2 through the NiCr wire 5-1 and NiSi wire 6-1, and the cold junction compensation circuit 2-1 And the signal conditioning circuit 2-2 processes the signal, and the processed signal is sent to the data acquisition card 3, and the data acquisition card 3 collects the signal, and the collected signal is sent to the PC 4, and the cutting on the PC 4 The temperature acquisition interface 4-1 displays, analyzes and stores the signals.

The utility model is characterized in that: the NiCr thermal electrode 5 and the NiSi thermal electrode 6 are plated on the numerically controlled cutting tool 1-1 to realize real-time, fast and accurate measurement of the cutting temperature.

Although the present invention has been illustrated and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made within the scope of the claims.

Claims (5)

1. cutting temperature measurement device, it is characterized in that: comprise film thermocouple thermometric cutter head (1), modulate circuit (2), data collecting card (3), PC (4), described film thermocouple thermometric cutter head (1) connects modulate circuit (2), described modulate circuit (2) connection data capture card (3), described data collecting card (3) connects PC (4).

2. cutting temperature measurement device according to claim 1, it is characterized in that: described film thermocouple thermometric cutter head (1) comprises NC cutting tool (1-1), has been coated with NiCr thermode (5) and NiSi thermode (6) on described NC cutting tool (1-1).

3. cutting temperature measurement device according to claim 2 is characterized in that: described NiCr thermode (5) connects modulate circuit (2) by NiCr silk (5-1), and described NiSi thermode (6) connects modulate circuit (2) by NiSi silk (6-1).

4. cutting temperature measurement device according to claim 1, it is characterized in that: described modulate circuit (2) comprises cold junction compensation circuit (2-1) and signal conditioning circuit (2-2).

5. cutting temperature measurement device according to claim 1, it is characterized in that: described PC (4) is provided with cutting temperature acquisition interface (4-1).

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