A turbine blade tenon tooth grinding temperature measuring device and method

Abstract

The present application relates to a kind of turbine blade tenon tooth grinding temperature measuring device and method, belong to aero-engine field.It includes: fixture seat, fixture stopper and multiple thermocouple sensor components, the fixture seat with the fixture stopper detachable connection, turbine blade is located between the fixture seat and the fixture stopper, multiple the thermocouple sensor components are located at the end of the fixture seat away from the fixture stopper, and the turbine blade side abuts.This application is favorable in the process of grinding wheel to turbine blade tenon tooth grinding, real-time monitoring the temperature inside turbine blade when grinding tenon tooth, and closed-loop control grinding feed, avoid overheating to cause the change of turbine blade metallographic structure and failure.

Description

Technical Field

[0001] This invention relates to the field of aero-engines, and more particularly to a device and method for measuring the grinding temperature of turbine blade tenons. Background Technology

[0002] During the grinding of turbine blade tenons for aero-engines, the surface of the part is subjected to friction, plowing, and cutting by the abrasive grains of the grinding wheel. The ground surface is subjected to force and heat. When the grinding amount is too large, the coolant casting pressure and flow rate are insufficient, the flushing pressure is too low, or the grinding wheel is not selected properly, varying degrees of burning can occur in the contact area between the grinding wheel and the tenon, weakening the turbine blade matrix. Under the action of grinding force and structural stress, the formation of grinding cracks is accelerated, posing a significant hidden danger to the internal quality of the turbine blade. Currently, the turbine blade tenon machining process lacks online monitoring technology, posing a product quality risk. The difficulty in online monitoring of the tenon grinding temperature lies in the fact that during the grinding process, the heating point of the tenon is within the range of motion of the grinding wheel, leaving no effective detection space. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a device and method for measuring the grinding temperature of turbine blade tenons, so as to monitor the internal temperature of the turbine blade tenons in real time during the grinding process of the grinding wheel on the turbine blade tenons.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a turbine blade tenon grinding temperature measuring device, comprising: a clamp seat, a clamp stop and a plurality of thermocouple sensor assemblies, wherein the clamp seat and the clamp stop are detachably connected, the turbine blade is disposed between the clamp seat and the clamp stop, and the plurality of thermocouple sensor assemblies are disposed at one end of the clamp seat away from the clamp stop and abut against the side of the turbine blade.

[0005] The beneficial effects of the present invention are: the clamp seat and the clamp stop block are conducive to fixing the turbine blade tenon teeth, and the temperature of the tooth tip, tooth bottom and extension section at one end of the turbine blade tenon teeth is detected by the thermocouple sensor assembly, thereby indirectly obtaining the temperature inside the turbine blade tenon teeth and realizing real-time monitoring of the temperature inside the turbine blade tenon teeth.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, it also includes multiple countersunk screws and multiple cylindrical pins, with each of the multiple countersunk screws, multiple cylindrical pins and multiple thermocouple sensor assemblies corresponding to one another. The countersunk screws are fixed to the end of the clamp seat away from the clamp stop by threads, and the cylindrical pins are located between the countersunk screws and the thermocouple sensor assemblies, with each end of the cylindrical pin abutting against the countersunk screws and the thermocouple sensor assemblies.

[0008] The beneficial effect of adopting the above-mentioned further solution is that the countersunk screws and cylindrical pins help to stably fix the thermocouple sensor assembly to the end of the clamp seat away from the clamp stop.

[0009] Furthermore, the fixture base includes: a tenon tooth profiled base, a fixture base side plate, multiple sensor mounting holes and multiple threaded holes. The tenon teeth of the turbine blade are adapted to be mounted on the tenon tooth profiled base. The fixture base side plate is vertically and detachably disposed at one end of the tenon tooth profiled base. The sensor mounting holes and the threaded holes are both through holes disposed on the fixture base side plate.

[0010] The beneficial effect of adopting the above-mentioned further solution is that the tenon tooth profile base and the clamp seat side plate in the clamp seat cooperate with the clamp stop block, which helps to fix the turbine blade tenon tooth and improve the stability of the turbine blade tenon tooth test process.

[0011] Furthermore, the multiple countersunk screws are threadedly connected to the multiple threaded holes one by one, and the multiple thermocouple sensor assemblies pass through the multiple sensor mounting holes one by one.

[0012] The beneficial effect of adopting the above-mentioned further solution is that it facilitates the installation of countersunk screws and thermocouple sensor assemblies on the side plate of the fixture seat, and the tightness of the thermocouple sensor assemblies can be adjusted with the cylindrical pins, thereby detecting the temperature of the tooth tip, tooth root and extension section at one end of the turbine blade tenon.

[0013] Furthermore, the tenon-shaped base is provided with a plurality of clamp seat fastening holes at one end near the clamp stop, and the clamp seat fastening holes are threaded blind holes.

[0014] The beneficial effect of adopting the above-mentioned further solution is that the clamp seat fastening hole facilitates the fixing of the clamp seat and the clamp stop under the action of the fastener.

[0015] Furthermore, the clamping block includes: a first clamping block side plate, two second clamping block side plates, and a plurality of clamping block fastening holes. The two second clamping block side plates are vertically installed on both sides of the first clamping block side plate near the clamping seat. The clamping block fastening holes are through holes installed on the first clamping block side plate. The plurality of clamping block fastening holes are coaxially arranged with the plurality of clamping seat fastening holes.

[0016] The beneficial effect of adopting the above-mentioned further solution is that the first clamping block side plate and the two second clamping block side plates help to form a U-shaped clamping block, which fixes the tenon tooth contour base between the U-shaped areas and plays a certain limiting role.

[0017] Furthermore, it also includes fasteners that are inserted into the clamp stop fastening hole and the clamp seat fastening hole for connecting the clamp stop and the clamp seat.

[0018] The beneficial effects of adopting the above-mentioned further solution are: the fasteners are inserted into the fastening holes of the clamp stop and the clamp seat, which helps to fix the clamp stop and the clamp seat and improves the stability during the turbine blade tenon test.

[0019] Furthermore, the thermocouple sensor assembly includes a cylindrical sleeve, a thermocouple sensor, and two wires. The thermocouple sensor is disposed at one end of the cylindrical sleeve, and the wires pass through the cylindrical sleeve and are connected to the thermocouple sensor. The cylindrical sleeve passes through the sensor mounting hole, and the thermocouple sensor is disposed at one end of the clamp seat side plate near the tenon-tooth contour base.

[0020] The advantages of adopting the above-mentioned further solution are: the cylindrical sleeve is conducive to fixing the thermocouple sensor at one end close to the turbine blade tenon, thereby detecting the temperature at the end of the turbine blade tenon, and the wire is conducive to providing power for the operation of the thermocouple sensor and transmitting the detection signal.

[0021] Furthermore, the cylindrical sleeve is provided with two through holes along its axis. The through holes are through holes, and the two wires pass through the two through holes one to one.

[0022] The beneficial effects of adopting the above-mentioned further solution are: wire perforation helps protect the wires and improves the reliability of thermocouple sensor operation.

[0023] Another technical solution of the present invention to solve the above-mentioned technical problems is as follows: A method for measuring the grinding temperature of turbine blade tenon teeth, comprising the following steps:

[0024] S1: The turbine blade is fitted and fixed between the fixture seat and the fixture block. The mortise teeth on the machined side of the turbine blade are positioned in the shape of the fixture seat and the turbine blade is clamped by the fixture block.

[0025] S2: Install the three thermocouple sensor assemblies on the fixture base, and align them one by one with the tooth top, tooth bottom and extension of the unmachined side tenon of the turbine blade;

[0026] S3: The turbine blades are ground to form tenons using a grinding wheel, which heats the turbine blades. Thermocouple sensor components are used to detect the temperature of the tooth tip, tooth root, and extension section of the tenons during the grinding process.

[0027] S4: By observing the relationship between the surface temperature and the internal temperature of the turbine blade tenon, the real-time temperature inside the turbine blade tenon is indirectly obtained, and the grinding feed rate is controlled in a closed loop.

[0028] The beneficial effects of this invention are: the measuring device and the measuring method enable the measurement of the grinding temperature of the turbine blade tenon end face, and indirectly reflect the internal temperature of the tenon under the correspondence between the surface temperature and the internal temperature of the turbine blade tenon, realizing real-time online monitoring of the grinding temperature of the turbine blade tenon, and closed-loop control of the grinding feed, avoiding overheating that could cause changes in the metallographic structure of the turbine blade and failure, real-time control of the processing quality, and ensuring the quality of the aero-engine. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0030] Figure 2 A top view of the overall structure provided in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the fixture base structure provided in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the clamp stop structure provided in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the thermocouple sensor assembly structure provided in an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of a cylindrical sleeve structure provided in an embodiment of the present invention;

[0035] Figure 7 A flowchart of the measurement method provided in an embodiment of the present invention.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1. Fixture base; 2. Fixture stop; 3. Countersunk screw; 4. Thermocouple sensor assembly; 5. Cylindrical pin; 11. Tenon-tooth profiled base; 12. Fixture base side plate; 13. Sensor mounting hole; 14. Threaded hole; 21. First fixture stop side plate; 22. Second fixture stop side plate; 23. Fixture stop fastening hole; 41. Cylindrical sleeve; 42. Thermocouple sensor; 43. Wire; 111. Fixture base fastening hole; 411. Wire through hole. Detailed Implementation

[0038] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0039] like Figure 1 and Figure 2As shown, a turbine blade tenon grinding temperature measuring device includes: a clamping seat 1, a clamping block 2, and a plurality of thermocouple sensor assemblies 4. The clamping seat 1 and the clamping block 2 are detachably connected. The turbine blade is disposed between the clamping seat 1 and the clamping block 2. The plurality of thermocouple sensor assemblies 4 are disposed at one end of the clamping seat 1 away from the clamping block 2 and abut against the side of the turbine blade.

[0040] It should be noted that, in a preferred embodiment of the present invention, the number of thermocouple sensor components 4 is three, corresponding to the temperature detection of the tooth tip, tooth bottom and extension section at one end of the turbine blade tenon.

[0041] The beneficial effects of the present invention are: the clamp seat and the clamp stop block are conducive to fixing the turbine blade tenon teeth, and the temperature of the tooth tip, tooth bottom and extension section at one end of the turbine blade tenon teeth is detected by the thermocouple sensor assembly, thereby indirectly obtaining the temperature inside the turbine blade tenon teeth and realizing real-time monitoring of the temperature inside the turbine blade tenon teeth.

[0042] Preferred, such as Figure 1 and Figure 2 As shown, it also includes multiple countersunk screws 3 and multiple cylindrical pins 5. The multiple countersunk screws 3, the multiple cylindrical pins 5 and the multiple thermocouple sensor assemblies 4 correspond one-to-one. The countersunk screws 3 are fixed to the end of the clamp seat 1 away from the clamp stop 2 by threads. The cylindrical pins 5 are located between the countersunk screws 3 and the thermocouple sensor assemblies 4. The two ends of the cylindrical pins 5 correspond one-to-one with the countersunk screws 3 and the thermocouple sensor assemblies 4.

[0043] It should be noted that in the preferred embodiment of the present invention, there are three countersunk screws 3 and three cylindrical pins 5. In other preferred embodiments of the present invention, the countersunk screws 3 and the cylindrical pins 5 may be omitted, and the thermocouple sensor assembly 4 may be directly fixed to the end of the clamp seat 1 away from the clamp stop 2 by means of threaded connection, or the thermocouple sensor assembly 4 may be fixed by other means.

[0044] It should also be noted that: the contact between the cylindrical pin 5, the countersunk screw 3, and the thermocouple sensor assembly 4 means that one end of the outer wall of the cylindrical pin 5 abuts against the lower part of the arc-shaped outer wall of the countersunk screw 3 head, and the other end abuts against the side wall of the thermocouple sensor assembly 4.

[0045] The advantages of adopting the above preferred solution are that the countersunk screws and cylindrical pins help to stably fix the thermocouple sensor assembly to the end of the clamp seat away from the clamp stop.

[0046] Preferred, such as Figure 3As shown, the fixture base 1 includes: a tenon tooth contour base 11, a fixture base side plate 12, multiple sensor mounting holes 13 and multiple threaded holes 14. The tenon teeth of the turbine blade are adapted to be mounted on the tenon tooth contour base 11. The fixture base side plate 12 is vertically and detachably disposed at one end of the tenon tooth contour base 11. The sensor mounting holes 13 and the threaded holes 14 are both through holes disposed on the fixture base side plate 12.

[0047] The advantages of adopting the above-mentioned preferred solution are: the tenon tooth profile base and the clamp seat side plate in the clamp seat cooperate with the clamp stop block, which helps to fix the turbine blade tenon tooth and improve the stability of the turbine blade tenon tooth test process.

[0048] Preferably, the plurality of countersunk screws 3 are threadedly connected to the plurality of threaded holes 14 in a one-to-one correspondence, and the plurality of thermocouple sensor assemblies 4 pass through the plurality of sensor mounting holes 13 in a one-to-one correspondence.

[0049] The advantages of adopting the above preferred solution are: it facilitates the installation of countersunk screws and thermocouple sensor assemblies on the side plate of the fixture seat, and the adjustment of the tightness of the thermocouple sensor assemblies with cylindrical pins, thereby detecting the temperature of the tooth tip, tooth root and extension section at one end of the turbine blade tenon.

[0050] Preferred, such as Figure 3 As shown, the tenon tooth contour base 11 is provided with a plurality of clamp seat fastening holes 111 at one end near the clamp stop block 2, and the clamp seat fastening holes 111 are threaded blind holes.

[0051] The advantages of adopting the above preferred solution are: the clamp seat fastening hole facilitates the fixing of the clamp seat and the clamp stop under the action of the fastener.

[0052] Preferred, such as Figure 4 As shown, the clamp stop 2 includes: a first clamp stop side plate 21, two second clamp stop side plates 22, and a plurality of clamp stop fastening holes 23. The two second clamp stop side plates 22 are vertically installed on both sides of the first clamp stop side plate 21 near the end of the clamp seat 1. The clamp stop fastening holes 23 are through holes installed on the first clamp stop side plate 21. The plurality of clamp stop fastening holes 23 are coaxially arranged with the plurality of clamp seat fastening holes 111 corresponding to each other.

[0053] The beneficial effects of adopting the above preferred solution are: the first clamping block side plate and the two second clamping block side plates help to form a U-shaped clamping block, which fixes the tenon tooth contour base between the U-shaped areas and plays a certain limiting role.

[0054] Preferably, it also includes fasteners inserted into the clamp stop fastening hole 23 and the clamp seat fastening hole 111 for connecting the clamp stop 2 and the clamp seat 1.

[0055] It should be noted that, in a preferred embodiment of the present invention, the fastener is a bolt.

[0056] The advantages of adopting the above preferred solution are: the fasteners are inserted into the clamp stop fastening holes and the clamp seat fastening holes, which helps to fix the clamp stop and the clamp seat and improves the stability during turbine blade tenon testing.

[0057] Preferred, such as Figure 5 As shown, the thermocouple sensor assembly 4 includes a cylindrical sleeve 41, a thermocouple sensor 42, and two wires 43. The thermocouple sensor 42 is disposed at one end of the cylindrical sleeve 41. The wires 43 pass through the cylindrical sleeve 41 and are connected to the thermocouple sensor 42. The cylindrical sleeve 41 passes through the sensor mounting hole 13. The thermocouple sensor 42 is disposed at one end of the clamp seat side plate 12 near the tenon tooth contour base 11.

[0058] It should be noted that, in a preferred embodiment of the present invention, the cylindrical sleeve 41 is made of insulating ceramic material. The two wires 43 serve as the positive and negative terminals of the thermocouple sensor 42, and are connected to an external signal receiving device.

[0059] The advantages of adopting the above preferred solution are: the cylindrical sleeve is conducive to fixing the thermocouple sensor at one end close to the turbine blade tenon, thereby detecting the temperature at the end of the turbine blade tenon; and the wire is conducive to providing power for the operation of the thermocouple sensor and transmitting the detection signal.

[0060] Preferred, such as Figure 6 As shown, the cylindrical sleeve 41 is provided with two wire through holes 411 in the axial direction. The wire through holes 411 are through holes, and the two wires 43 pass through the two wire through holes 411 in a one-to-one correspondence.

[0061] The advantages of adopting the above preferred solution are: wire perforation helps protect the wires and improves the reliability of thermocouple sensor operation.

[0062] like Figure 7 As shown, a method for measuring the grinding temperature of turbine blade tenon teeth includes the following steps:

[0063] S1: The turbine blade is fitted and fixed between the clamping seat 1 and the clamping block 2. The mortise teeth on the machined side of the turbine blade are positioned in the shape of the clamping seat 1, and the turbine blade is clamped by the clamping block 2.

[0064] S2: Install the three thermocouple sensor assemblies 4 on the fixture seat 1, and align them one by one with the tooth top, tooth bottom and extension of the unmachined side tenon of the turbine blade;

[0065] S3: The turbine blade is ground with a grinding wheel to form tenons, which heats up the turbine blade. Thermocouple sensor assembly 4 is used to detect the temperature of the top, bottom and extension of the tenons during the grinding process.

[0066] S4: By observing the relationship between the surface temperature and the internal temperature of the turbine blade tenon, the real-time temperature inside the turbine blade tenon is indirectly obtained, and the grinding feed rate is controlled in a closed loop.

[0067] It should be noted that in step S2, when installing the three thermocouple sensor assemblies 4 on the fixture base 1, the cylindrical sleeve 41 needs to be passed through the sensor mounting hole 13 so that the thermocouple sensor 42 is located at the end of the fixture base side plate 12 near the tenon tooth contour base 11.

[0068] In step S4, the relationship between the surface temperature of the turbine blade tenon and the internal temperature of the tenon is: internal temperature = end face temperature + KX (where K is the thermal conductivity, and the K value is different depending on the material of the turbine blade tenon; X is the distance between the temperature measurement point inside the turbine blade tenon and the end face); closed-loop control means that if the detected internal temperature of the tenon is too high, the grinding amount is reduced, and if the temperature is too low, the grinding amount is increased.

[0069] The beneficial effects of this invention are: the measuring device and the measuring method enable the measurement of the grinding temperature of the turbine blade tenon end face, and indirectly reflect the internal temperature of the tenon under the correspondence between the surface temperature and the internal temperature of the turbine blade tenon, realizing real-time online monitoring of the grinding temperature of the turbine blade tenon, and closed-loop control of the grinding feed, avoiding overheating that could cause changes in the metallographic structure of the turbine blade and failure, real-time control of the processing quality, and ensuring the quality of the aero-engine.

[0070] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0072] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0073] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0075] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for measuring the grinding temperature of turbine blade tenon teeth, characterized in that, The device for measuring the temperature during turbine blade tenon grinding includes the following steps: S1: The turbine blade is fitted and fixed between the fixture seat (1) and the fixture block (2). The mortise teeth on the machined side of the turbine blade are positioned in the shape of the fixture seat (1), and the turbine blade is clamped by the fixture block (2). S2: Install the three thermocouple sensor assemblies (4) on the fixture seat (1) and correspond them one by one to the tooth top, tooth bottom and extension of the unmachined side tenon of the turbine blade; S3: Use a grinding wheel to grind the turbine blade to make the tenon teeth, so that the turbine blade heats up, and use a thermocouple sensor assembly (4) to detect the temperature of the top, bottom and extension of the tenon teeth during the grinding process of the turbine blade. S4: By observing the relationship between the surface temperature and the internal temperature of the turbine blade tenon, the real-time temperature inside the turbine blade tenon is indirectly obtained, and the grinding feed rate is controlled in a closed loop. The relationship between the surface temperature and the internal temperature of the turbine blade tenon is as follows: internal temperature = end face temperature + KX, where K is the thermal conductivity, and the K value is different depending on the material of the turbine blade tenon; X is the distance between the temperature measurement point inside the turbine blade tenon and the end face. Closed-loop control means that if the detected internal temperature of the tenon is too high, the grinding amount is reduced; if the temperature is too low, the grinding amount is increased. A turbine blade tenon grinding temperature measuring device includes: a clamp seat (1), a clamp stop (2) and multiple thermocouple sensor assemblies (4). The clamp seat (1) and the clamp stop (2) are detachably connected. The turbine blade is disposed between the clamp seat (1) and the clamp stop (2). The multiple thermocouple sensor assemblies (4) are disposed at one end of the clamp seat (1) away from the clamp stop (2) and abut against the side of the turbine blade.

2. The method for measuring the grinding temperature of turbine blade tenon teeth according to claim 1, characterized in that, It also includes multiple countersunk screws (3) and multiple cylindrical pins (5), with each of the multiple countersunk screws (3), multiple cylindrical pins (5) and multiple thermocouple sensor assemblies (4) corresponding to one another. The countersunk screws (3) are fixed to the end of the clamp seat (1) away from the clamp stop (2) by threads. The cylindrical pins (5) are located between the countersunk screws (3) and the thermocouple sensor assemblies (4), with each end of the cylindrical pins (5) corresponding to and abutting against the countersunk screws (3) and the thermocouple sensor assemblies (4).

3. The method for measuring the grinding temperature of turbine blade tenon teeth according to claim 2, characterized in that, The fixture base (1) includes: a tenon tooth profile base (11), a fixture base side plate (12), multiple sensor mounting holes (13) and multiple threaded holes (14). The tenon teeth of the turbine blade are adapted to be mounted on the tenon tooth profile base (11). The fixture base side plate (12) is vertically and detachably disposed at one end of the tenon tooth profile base (11). The sensor mounting holes (13) and the threaded holes (14) are both through holes disposed on the fixture base side plate (12).

4. The method for measuring the grinding temperature of turbine blade tenon teeth according to claim 3, characterized in that, Multiple countersunk screws (3) are threadedly connected to multiple threaded holes (14) in a one-to-one correspondence, and multiple thermocouple sensor assemblies (4) pass through multiple sensor mounting holes (13) in a one-to-one correspondence.

5. The method for measuring the grinding temperature of turbine blade tenon teeth according to claim 3, characterized in that, The tenon tooth contour base (11) is provided with a plurality of clamp seat fastening holes (111) at one end near the clamp stop (2), and the clamp seat fastening holes (111) are threaded blind holes.

6. The method for measuring the grinding temperature of turbine blade tenon teeth according to claim 5, characterized in that, The clamp stop (2) includes: a first clamp stop side plate (21), two second clamp stop side plates (22) and a plurality of clamp stop fastening holes (23). The two second clamp stop side plates (22) are vertically installed on both sides of the first clamp stop side plate (21) near the clamp seat (1). The clamp stop fastening holes (23) are through holes installed on the first clamp stop side plate (21). The plurality of clamp stop fastening holes (23) are coaxially arranged with the plurality of clamp seat fastening holes (111) corresponding to each other.

7. The method for measuring the grinding temperature of turbine blade tenon teeth according to claim 6, characterized in that, It also includes fasteners that are inserted into the clamp stop fastening hole (23) and the clamp seat fastening hole (111) for connecting the clamp stop (2) and the clamp seat (1).

8. The method for measuring the grinding temperature of turbine blade tenon teeth according to claim 3, characterized in that, The thermocouple sensor assembly (4) includes a cylindrical sleeve (41), a thermocouple sensor (42), and two wires (43). The thermocouple sensor (42) is disposed at one end of the cylindrical sleeve (41). The wires (43) pass through the cylindrical sleeve (41) and are connected to the thermocouple sensor (42). The cylindrical sleeve (41) passes through the sensor mounting hole (13). The thermocouple sensor (42) is disposed at one end of the clamp seat side plate (12) near the tenon tooth contour base (11).

9. The method for measuring the grinding temperature of turbine blade tenon teeth according to claim 8, characterized in that, The cylindrical sleeve (41) is provided with two wire through holes (411) in the axial direction. The wire through holes (411) are through holes, and the two wires (43) pass through the two wire through holes (411) one by one.

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