CN114689197A - A online temperature measuring device for metal surface function is rebuild - Google Patents
A online temperature measuring device for metal surface function is rebuild Download PDFInfo
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- CN114689197A CN114689197A CN202210603302.2A CN202210603302A CN114689197A CN 114689197 A CN114689197 A CN 114689197A CN 202210603302 A CN202210603302 A CN 202210603302A CN 114689197 A CN114689197 A CN 114689197A
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- thermocouple
- cutter
- protective shell
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
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Abstract
The application discloses an online temperature measuring device for metal surface function reconstruction, which relates to the technical field of machining temperature measurement and comprises a first cutter handle, a protective shell, a second cutter handle, a modified cutter, a thermocouple and a transmission module, wherein the first cutter handle, the protective shell, the second cutter handle and the modified cutter are coaxially connected; the first end of the thermocouple is positioned in the protective shell, the second end of the thermocouple sequentially penetrates through the bottom plate, the second knife handle and the modifying cutter of the protective shell, and the second end of the thermocouple is positioned in the modifying cutter and close to the second end of the modifying cutter; the transmission module is positioned in the protective shell and is electrically connected with the thermocouple; the thermocouple is used for acquiring temperature information of the second end of the modified cutter and transmitting the temperature information to the transmission module; the transmission module is used for receiving the temperature information and transmitting the temperature information to the upper computer. The temperature of the working end of the modified cutter is collected through the embedded thermocouple, fed back to the transmission module, and transmitted to the upper computer through the transmission module so as to obtain the temperature of the working end of the modified cutter in real time.
Description
Technical Field
The application relates to the technical field of machining temperature measurement, in particular to an online temperature measuring device for metal surface function reconstruction.
Background
In the machining process, the measurement and control of the cutting temperature are always important contents of research in scientific research and production, and are important signals for indirectly monitoring the cutting process and the state of a cutter. For cutting machining with a spindle rotating at a high speed, the traditional testing method has the defects of difficult wiring, long response time of a temperature sensing element and the like, so that the cutting temperature is difficult to measure accurately in real time.
The micro-nano structure and the texture characteristic can be improved on the metal surface characteristic by utilizing a progressive surface micro-nano modification technology, and the effect of integrating the material structure function is achieved, wherein the related key component, namely the temperature of the modified cutter during working has profound influence on the metal surface characteristic, so that the real-time online measurement and acquisition of the working temperature of the modified cutter have important guiding significance, and a tool capable of realizing the temperature measurement work is lacked at present.
Disclosure of Invention
The main purpose of this application is to provide an online temperature measuring device for metal surface function is reproduced, aims at solving the problem that lacks the instrument of carrying out real-time measurement to modified cutter operating temperature among the prior art.
The technical scheme adopted by the application is as follows:
an on-line temperature measuring device for metal surface function reconstruction comprises a thermocouple, a transmission module, a first knife handle, a protective shell, a second knife handle and a modified knife, wherein,
the first cutter handle, the protective shell, the second cutter handle and the modified cutter are sequentially and coaxially connected;
the first end of the thermocouple is positioned in the protective shell, the second end of the thermocouple sequentially penetrates through the bottom plate, the second knife handle and the modifying cutter of the protective shell, and the second end of the thermocouple is positioned in the modifying cutter and close to the second end of the modifying cutter;
the transmission module is positioned in the protective shell and is electrically connected with the thermocouple;
the thermocouple is used for acquiring temperature information of the second end of the modified cutter and transmitting the temperature information to the transmission module;
the transmission module is used for receiving the temperature information and transmitting the temperature information to the upper computer.
Optionally, the device further comprises a holder, the holder is arranged on the inner bottom plate of the protective shell, and the first end of the thermocouple is in interference fit with the holder.
Optionally, the device still includes a plurality of stud, and a plurality of stud are the annular array around the axis of protective housing and distribute, and stud's one end all is connected with the holder, and stud's the other end all is connected with transmission module.
Optionally, a gap is formed between the middle of the holder and the bottom plate of the protective shell, one end of the stud bolt penetrates through the holder and is located in the gap, and the vertical section of the holder is in a symmetrical step shape.
Optionally, the second end of the modifying tool is provided with a mounting hole, the mounting hole is coaxial with the modifying tool, a copper core is arranged in the mounting hole, the copper core is in interference fit with the mounting hole, and the first end of the copper core is in contact with the second end of the thermocouple.
Optionally, the device further comprises a spring clamp and a locking nut, the modified cutter is inserted into an inner ring of the spring clamp, an outer conical surface of the spring clamp is in contact with an inner conical surface of the second cutter handle, and the locking nut is sleeved on an outer wall of the second cutter handle and is in threaded connection with the second cutter handle.
Optionally, the spring clip is an ER clip.
Optionally, a rivet is arranged at the first end of the first tool shank and is in threaded connection with the first tool shank.
Optionally, the thermocouple is a type B thermocouple.
Optionally, the first handle and the protective shell and/or the protective shell and the second handle are connected by bolts.
Compared with the prior art, the beneficial effects of this application are:
the embodiment of the application provides an online temperature measuring device for metal surface function reconstruction, a device main body with a main axis is formed by a first handle, a protective shell, a second handle and a modified cutter which are coaxially connected, the axis of the device is ensured to coincide with the rotating axis under high-speed rotation work, mass eccentricity is avoided, the stability of the device is kept, one end of the modified cutter is provided with a thermocouple in the device main body in an embedded mode, the other end of the thermocouple is electrically connected with a transmission module positioned in the protective shell after penetrating through the protective shell and the second handle, the thermocouple can detect and collect the second end of the modified cutter, namely the temperature of the working end of the modified cutter in real time due to the functional characteristics of the thermocouple and feed back the temperature to the transmission module in real time, the transmission module reacts the received temperature information to an upper computer, and no more external devices and wires are introduced to form a complex operation space, under the condition that the matched machining is stably carried out, an operator can obtain the temperature of the working end of the modified cutter in real time.
Drawings
FIG. 1 is a schematic structural diagram of an on-line temperature measuring device for metal surface function reconstruction provided in an embodiment of the present application;
FIG. 2 is a schematic cross-sectional structural view of an online temperature measuring device for metal surface function reconstruction according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a working end of a modified cutting tool in an on-line temperature measuring device for metal surface function reconstruction according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a locking nut in the on-line temperature measuring device for metal surface function reconstruction provided in the embodiment of the present application;
FIG. 5 is a schematic structural diagram of a spring clamp in the online temperature measuring device for metal surface function reconstruction according to the embodiment of the present disclosure;
FIG. 6 is a schematic top view of a holder of the on-line thermometric device for metal surface function reconstruction according to the embodiment of the present application;
FIG. 7 is a front cross-sectional view of a holder in an on-line thermometric device for metal surface function reconstruction provided by an embodiment of the present application;
the reference numbers in the figures indicate:
1-copper core, 2-modified cutter, 3-thermocouple, 4-locking nut, 5-spring clamp, 6-second handle, 7-second handle nut, 8-second handle bolt, 9-protective shell, 10-clamp, 11-nut, 12-stud bolt, 13-wire, 14-transmission module, 15-first handle nut, 16-first handle bolt, 17-first handle and 18-rivet.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the embodiment of the present application are only used to explain the relative position relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.
In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
In machining, detection and control of cutting temperature are always important contents of scientific research, the traditional testing method is difficult in wiring and complicated in operating environment, the response time of an induction element is long, real-time measurement is difficult to achieve, especially, at the current time when the micro-nano modification technology on the progressive metal surface is more mature, higher requirements are placed on operation and detection of a modified cutter, if real-time detection of the temperature of the modified cutter during working can be achieved, working parameters of the modified cutter of a numerical control machine tool can be adjusted in time through automatic control software of a PC (personal computer) end, the machining process is more stable and controllable, and the machining quality can be greatly improved.
Therefore, the embodiment of the present application provides an online temperature measuring device for metal surface function reconstruction to achieve the above object, and with reference to fig. 1 to 7, the device includes a thermocouple 3, a transmission module 14, a first tool shank 17, a protective shell 9, a second tool shank 6, and a modified tool 2, wherein the first tool shank 17, the protective shell 9, the second tool shank 6, and the modified tool 2 are coaxially connected in sequence; the first end of the thermocouple 3 is positioned inside the protective shell 9, the second end of the thermocouple 3 sequentially penetrates through the bottom plate of the protective shell 9, the second knife handle 6 and the modified cutter 2, and the second end of the thermocouple 3 is positioned inside the modified cutter 2 and close to the second end of the modified cutter 2; the transmission module 14 is positioned in the protective shell 9, and the transmission module 14 is electrically connected with the thermocouple 3;
the thermocouple 3 is used for acquiring temperature information of the second end of the modified cutter 2 and transmitting the temperature information to the transmission module 14; the transmission module 14 is used for receiving the temperature information and transmitting the temperature information to the upper computer.
In this embodiment, it should be noted that the first end and the second end of the component described in the embodiments of the present application are based on the directions shown in fig. 2, and the upper end of the component is the first end thereof, and the lower end thereof is the second end thereof.
The device main body is composed of a first cutter handle 17, a protective shell 9, a second cutter handle 6 and a modified cutter 2 which are coaxially connected in sequence, so that the device main body is provided with an axis, the axis of the device is ensured to be coincident with the central axis of rotation when the device works in a high-speed rotation mode, and eccentric rotation is avoided; modified cutter 2 adopts embedded mode to be provided with thermocouple 3, and the one end of thermocouple 3 is close to the second end of modified cutter 2, also is modified cutter 2's work end, and is used for measuring the real-time temperature of work end, behind thermocouple 3's the other end runs through other parts, with the 14 electric connection of transmission module who is located protective housing 9, so that the temperature information who gathers can transmit for transmission module 14, and send to the host computer, make operating personnel can obtain the temperature of modified cutter 2 work end in real time.
In the embodiment of the application, the progressive metal surface micro-nano modification technology is a technology for modifying the metal surface at a micro-nano level based on the metal surface modification technology, and the tool holder is an existing processing auxiliary tool and can be conveniently butted with external parts such as a tool and processing equipment; the modification tool 2 is a tool used in a progressive metal surface micro-nano modification technology, and can be operated to realize micro-nano and texture characteristic improvement on metal surface characteristics at a certain temperature so as to achieve the effect of material structure function integration; the thermocouple 3 is a temperature measuring element commonly used in a temperature measuring instrument, directly measures temperature, converts a temperature signal into a thermal electromotive force signal, and converts the thermal electromotive force signal into the temperature of a measured medium through an electric instrument (a secondary instrument). The various thermocouples are often very different in their outer shape, but their basic structure is generally the same, and usually consists of a main part of a thermode, an insulating sheath protection tube, and a terminal box, and as shown in fig. 2, a probe-like main structure of a thermocouple is shown, and its terminal, terminal box, etc. can be arranged at its first end and mounted inside a protection case 9 or on a holder 10.
The transmission mechanism 14, such as a common thermal device or a temperature measuring instrument, can convert the temperature information fed back by the thermocouple 3 into a digital signal and wirelessly transmit the digital signal to an upper computer, for example, in the embodiment of the present application, the transmission mechanism may be composed of a MAX31856 (high precision thermocouple-to-digital output converter with linear compensation) and a Sub-1GHz bluetooth transmission module, the Sub-1GHz bluetooth transmission module sends a signal after the signal conversion, and a Sub-1GHz bluetooth receiving module corresponding to the upper computer receives the signal, so as to implement real-time transmission. In one embodiment, the thermocouple is a type B thermocouple, a precious metal thermocouple, a platinum rhodium 30-platinum rhodium 6 (type B) thermocouple, and the nominal chemical composition of the positive electrode (BP) is a platinum rhodium alloy with 30% rhodium and 70% platinum, the negative electrode (BN) is a platinum rhodium alloy with 6% rhodium. The diameter of the thermocouple wire is specified to be 0.5mm, the allowable deviation is-0.015 mm, the nominal chemical composition of the positive electrode (BP) is platinum-rhodium alloy, the rhodium content is 30%, the platinum content is 70%, the negative electrode (BN) is platinum-rhodium alloy, the rhodium content is 6%, so the thermocouple is commonly called double platinum-rhodium thermocouple. The thermocouple has the advantages of high long-term maximum use temperature of 1600 ℃, high short-term maximum use temperature of 1800 ℃, and the B-type thermocouple in a thermocouple series has the advantages of high accuracy, high stability, wide temperature measurement temperature range, long service life, high temperature measurement upper limit and the like.
In one embodiment, as shown in fig. 2, 6 and 7, in order to prevent the thermocouple 3 from hitting the inner wall of the modifying tool 2 and to stabilize the first end of the thermocouple 3 during high-speed rotation, a holder 10 is added to the device, the holder 10 is disposed on the inner bottom plate of the protective case 9, and the first end of the thermocouple 3 is interference-fitted with the holder 10. The first end of the thermocouple 3 is stabilized by the holder 10, and since the thermocouple 3 is integrally in a probe shape, after one end is fixed, the rotation center of the thermocouple 3 during rotation coincides with the axis of the device, and eccentric rotation is avoided.
In one embodiment, as shown in fig. 2 and 6, after the holder 10 is arranged, considering that the transmission module 14 is carried by the holder 10, so as to realize multi-component simultaneous fixation, a plurality of studs 12 are added to the device, the plurality of studs 12 are distributed in an annular array around the axis of the protective shell 9, one ends of the studs 12 are connected with the holder 10, and the other ends of the studs 12 are connected with the transmission module 14. The transmission module 14 is fixed on the holder 10 through the evenly distributed stud bolts 12 at the central position, as shown in fig. 6, the stud bolts 12 are arranged in a 4-number structure, negative effects caused by eccentric mass of the transmission module in rotation can be avoided, two ends of the stud bolts 12 are tightly fixed through being matched with the nuts 11, the thermocouple 3 is close to the transmission module 14 under the carrying of the holder 10, the electric connection can be realized by directly adopting one section of shorter lead 13, and connection of metal sheets, metal rods and the like can be adopted in other embodiments.
In one embodiment, as shown in fig. 7, in order to facilitate the installation and fixation of the holder 10 and consider hiding the nut 11, etc., the holder 10 is configured in a step shape, specifically, a gap is formed between the middle of the holder 10 and the bottom plate of the protective shell 9, the vertical section of the holder 10 is in a symmetrical step shape, one end of the stud 12 penetrates through the holder 10 and is located in the gap, so that the nut 11 can also be hidden in the gap, and when the holder 10 and the protective shell 9 are installed, a clearance fit is adopted between the holder 10 and the protective shell 9, which facilitates the disassembly and adjustment.
In one embodiment, as shown in fig. 2 and fig. 3, in order to improve the measurement speed and accuracy of the temperature of the working end of the modification tool 2, a mounting hole is formed in the second end of the modification tool 2, the mounting hole is coaxial with the modification tool 2, a copper core 1 is arranged in the mounting hole, the copper core 1 is in interference fit with the mounting hole, and the first end of the copper core 1 is in contact with the second end of the thermocouple 3 to realize conduction collection of the temperature; through inserting one end copper core 1 at the tip of modification cutter 2, because copper has good thermal conductivity, it can be fast with the real-time temperature conduction of work end to thermocouple 3 department to because the tribochemical reaction under high temperature work, the surface of copper core 1, modification cutter 2 generates the reaction film that has the lubrication action, thereby realizes the self-lubricating of modification cutter 1.
In the specific implementation process, the modified tool 2 is a hard alloy tool, a blind hole with the diameter of 5mm is machined along the center of the tail of the modified tool 2 by adopting electric spark discharge, the bottom of the blind hole is about 5mm away from the tool tip of the modified tool 2, a micropore with the diameter of 1mm is machined along the tool tip of the modified tool 2 along the bottom of the blind hole, namely a mounting hole, the micropore is embedded into a copper core 1 with the diameter of 1.1mm, the copper core 1 is an H62 brass bar, and the end face of the thermocouple 3 is contacted with the end face of the copper core 1 to complete mounting.
In an embodiment, as shown in fig. 2, 4 and 5, in order to facilitate replacement and adjustment of the modified tool 2 carried on the second tool holder 6 and increase stability of the modified tool 2 when the modified tool 2 is fixed, a spring clamp 5 and a lock nut 4 are added to the device, the modified tool 2 is inserted into an inner ring of the spring clamp 5, an outer conical surface of the spring clamp 5 contacts with an inner conical surface of the second tool holder 6, and the lock nut 4 is sleeved on an outer wall of the second tool holder 6 and is in threaded connection with the second tool holder 6; the spring clamp 5 is in close contact with the second handle of a knife 6 through the conical surface of the spring clamp 5, the end part of the second handle of a knife 6 is encircled by the outer side of the locking nut 4, the locking nut 4 pushes the spring clamp 5 to continue to be inserted into the second handle of a knife 6 along the conical surface of the spring clamp, the end part of the second handle of a knife 6 is expanded under the pushing of the spring clamp 5 and further achieves closer thread fit with the locking nut 4, the modified tool 2 is locked and fixed, when the modified tool is required to be disassembled, the locking nut 4 only needs to be rotated reversely, after the threaded connection state of the second handle of a knife 6 and the second handle of a knife is released, the limitation is removed from the end part of the second handle of a knife 6, and the spring clamp 5 can withdraw from the conical space at the end part of the second handle of a knife 6.
The spring clamp 5 is selected according to different types according to actual conditions, an ER chuck is adopted in the embodiment, the ER chuck is a cylindrical clamp which is used for fixing a drilling and tapping tool or a milling tool and is arranged on a main shaft of a drilling, tapping and milling machine or a machining center, and can also be used for fixing and reinforcing a fixed locking device which needs to be modified and machined parts, also called the ER chuck, the ER chuck has the characteristics of stable performance, high precision, simplicity in assembly and disassembly, low price and the like, and is widely used for machining such as boring, milling, drilling, tapping, grinding and engraving due to large clamping force and wide clamping range, energy loss cannot be caused during high-speed operation, but attention needs to be paid to the fact that the matched position of the ER chuck is clean and no sundries can be generated during use.
In one embodiment, as shown in fig. 1 and fig. 2, in order to facilitate the docking of the apparatus with the machine tool interface, a pull nail 18 adapted to the numerical control machine tool interface is arranged at a first end of the first tool shank 17, the pull nail 18 is in threaded connection with the first tool shank 17, so that the apparatus can be detached, and the apparatus can be conveniently docked with the machine tool through the pull nail 18.
In an embodiment, as shown in fig. 1 and fig. 2, in order to facilitate the detachment and installation of the main structure of the device, the first tool shank 17 and the protective shell 9 and/or the protective shell 9 and the second tool shank 6 are connected by bolts, specifically, a portion of the protective shell 9 in contact with the first tool shank 17 extends outward to form a fixing lug, the first tool shank bolt 16 is inserted into a hole of the fixing lug to realize the connection of the protective shell 9 and the first tool shank 17, and then the protective shell 9 and the first tool shank bolt 16 are connected by a first tool shank nut 15 and a first tool shank bolt 16 in a threaded manner on one side to realize the fixation, and similarly, after the second tool shank bolt 8 is connected with the protective shell 9 and the second tool shank 6, the second tool shank nut 7 is connected with the second tool shank nut 7 in a threaded manner to realize the fixation. Further, in order to cooperate with the rotary working, the second handle bolt 8 and the first handle bolt 16 are all provided with multiple groups and distributed in an annular array mode around the axis of the protective shell 9, so that the fixing degree of each part is the same, and damage or loosening of the connection state of the parts under high-speed rotation due to uneven stress is avoided.
In an embodiment, the transmission module 14 may further include a power supply module, the long-term stable operation of the transmission module 14 is realized through an internal power supply, the Sub-1GHz bluetooth receiving module receives the measured temperature data and transmits the measured temperature data to the PC end by using a USB interface technology or a wireless transmission technology, the PC end may display the temperature data in real time through a display screen and store the temperature data in the PC end as basic data for subsequent process optimization and adjustment, the PC end may be equipped with automatic control software, and the working parameters of the modification tool 2 are correspondingly adjusted through real-time feedback of temperature information, so as to realize automatic stable control of temperature.
The embodiment of the application provides an online temperature measuring device for metal surface function reconstruction can carry out real-time detection and display to modified cutter 2 operating temperature, has characteristics such as response speed is fast, measurement accuracy height to can adjust modified cutter 2 according to temperature feedback at the PC end, can realize the steady control operating temperature, have further promotion to the stable controllability of machining process, be favorable to the promotion of processingquality and the high quality of processing work piece is unified.
The application relates to a specific work flow of an online temperature measuring device for metal surface function reconstruction, which comprises the following steps: the surface of a workpiece is processed by using the modified cutter 2, the heat conduction action of the copper core 1 quickly conducts the temperature to a contact end of the thermocouple 3 in real time, the temperature information collected by the thermocouple 3 is fed back to the transmission module 14, a digital output converter on the transmission module 14 converts the signal and transmits the converted signal to a corresponding Bluetooth receiving module through a Bluetooth transmitting module, the Bluetooth receiving module transmits the signal data to a PC (personal computer) end, the PC end displays and stores the data in real time, and then the working parameters of the modified cutter 2 are correspondingly controlled and adjusted according to the real-time temperature condition.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. An on-line temperature measuring device for metal surface function reconstruction is characterized by comprising a thermocouple, a transmission module, a first cutter handle, a protective shell, a second cutter handle and a modified cutter, wherein,
the first knife handle, the protective shell, the second knife handle and the modified knife tool are sequentially and coaxially connected;
the first end of the thermocouple is located inside the protective shell, the second end of the thermocouple sequentially penetrates through the bottom plate of the protective shell, the second knife handle and the modified cutter, and the second end of the thermocouple is located inside the modified cutter and close to the second end of the modified cutter;
the transmission module is positioned in the protective shell and is electrically connected with the thermocouple;
the thermocouple is used for acquiring temperature information of the second end of the modified cutter and transmitting the temperature information to the transmission module;
the transmission module is used for receiving the temperature information and transmitting the temperature information to an upper computer.
2. The on-line thermometric device for metal surface functional reengineering of claim 1, further comprising a holder disposed on an inner base plate of the protective case, the first end of the thermocouple being in interference fit with the holder.
3. The on-line temperature measuring device for metal surface function reconstruction as claimed in claim 2, further comprising a plurality of studs distributed in an annular array around the axis of the protective shell, wherein one end of each stud is connected to the holder and the other end of each stud is connected to the transmission module.
4. The on-line temperature measuring device for metal surface function reconstruction as claimed in claim 3, wherein a gap is formed between the middle part of the holder and the bottom plate of the protective shell, one end of the stud bolt penetrates through the holder and is located in the gap, and the holder is symmetrically step-shaped in vertical section.
5. The on-line temperature measuring device for metal surface function reconstruction of claim 1, wherein a mounting hole is opened at the second end of the modified cutter, the mounting hole is coaxial with the modified cutter, a copper core is arranged in the mounting hole, the copper core is in interference fit with the mounting hole, and the first end of the copper core is in contact with the second end of the thermocouple.
6. The on-line temperature measuring device for metal surface function reconstruction as claimed in claim 1, further comprising a spring clamp and a lock nut, wherein the modifying tool is inserted into an inner ring of the spring clamp, an outer conical surface of the spring clamp contacts with an inner conical surface of the second tool shank, and the lock nut is sleeved on an outer wall of the second tool shank and is in threaded connection with the second tool shank.
7. The on-line thermometric apparatus for metal surface functional reengineering of claim 6, wherein the spring clamp employs an ER clamp.
8. The on-line temperature measuring device for metal surface function reconstruction as claimed in claim 1, wherein a rivet is arranged at a first end of the first tool shank, and the rivet is in threaded connection with the first tool shank.
9. The on-line thermometric device for metal surface functional reengineering of claim 1, wherein the thermocouple is a type B thermocouple.
10. The on-line temperature measuring device for metal surface function reconstruction as claimed in claim 1, wherein the first tool holder and the protective shell and/or the protective shell and the second tool holder are connected by bolts.
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