Tool holder positioning cutter template assembly and positioning method for cutter head of heading machine

Abstract

The present application relates to a kind of cutter templates for positioning cutter holder of heading machine cutter disc, including respectively as independent component intermediate part cutter template and auxiliary arm cutter template: the side of intermediate part cutter template is inwardly provided with a plurality of first positioning grooves arranged at intervals, and the first positioning groove is used to determine the position of intermediate cutter holder installed on the intermediate part of the heading machine cutter disc, and auxiliary arm cutter template is used to determine the position of auxiliary arm cutter holder on the auxiliary arm of heading machine cutter disc, the side of auxiliary arm cutter template is inwardly provided with a plurality of second positioning grooves arranged at intervals, and the second positioning groove is used to determine the position of auxiliary arm cutter holder installed on the auxiliary arm, and auxiliary arm cutter template includes multiple templates, and adjacent templates are detachably connected.The present application positions the position of cutter holder on the intermediate part and auxiliary arm by intermediate part cutter template and auxiliary arm cutter template respectively, relative to the triangular cutter template in the prior art, is divided into multiple cutter templates, small in size, simple in structure, and more convenient to use.

Description

Technical Field

[0001] This invention relates to the field of tunneling machine cutterhead machining technology, and in particular to a tool template assembly and positioning method for positioning the tool holder of a tunneling machine cutterhead. Background Technology

[0002] The tunneling machine cutterhead includes an octahedral central section at the center of the cutterhead and multiple auxiliary arms arranged on the sides of the central section. Multiple cutter holders for mounting hobbing cutters are installed on the end face of the central section and on the auxiliary arms. In existing technology, when determining the position of the cutter holders on the cutterhead, the central section and auxiliary arms need to be assembled, an auxiliary fixture supporting the cutter template is installed on the central section, and the cutter template is installed on the auxiliary fixture. The cutter template is a triangular structure. However, large-diameter tunneling machine cutterheads are approximately 9 meters high and 23 meters in diameter, resulting in a large size and weight for the cutter template, making its fabrication and installation difficult. Furthermore, to allow the installation of cutter holders on the end face of the central section and on the multiple auxiliary arms, the cutter template needs to be rotated, which is difficult due to its weight. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a tool template assembly and positioning method for positioning the tool holder of a tunneling machine cutterhead, which solves the technical problem in the prior art that the tool template is large in size and weight, making it inconvenient to position the tool holder on the tunneling machine cutterhead.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0007] A tool template assembly for positioning the tool holder of a tunneling machine cutterhead includes a middle tool template and an auxiliary arm tool template, which are each independent components.

[0008] The middle section cutter template has a plurality of spaced first positioning grooves on one side facing inward. The first positioning grooves are used to determine the position of the middle cutter holder installed on the middle part of the tunneling machine cutterhead and allow the middle hobbing cutter at the corresponding position to pass through.

[0009] The auxiliary arm cutter template is used to determine the position of the auxiliary arm cutter holder on the auxiliary arm of the tunneling machine cutterhead. Multiple spaced second positioning grooves are opened on one side of the auxiliary arm cutter template. The second positioning grooves are used to determine the position of the auxiliary arm cutter holder installed on the auxiliary arm and allow the auxiliary arm hobbing cutter at the corresponding position to pass through.

[0010] The auxiliary arm tool template includes multiple template sections, and adjacent template sections can be detachably connected.

[0011] Preferably, the auxiliary arm cutter template is further provided with a first positioning hole, which is located on the side opposite to the opening direction of the second positioning groove. The first positioning hole is used to position the auxiliary arm cutter template above the corresponding auxiliary arm.

[0012] Preferably, the intermediate tool template has a plurality of second positioning holes arranged at linear intervals on the side opposite to the opening direction of the first positioning groove;

[0013] The side of the middle tool template with the first positioning groove includes a straight section and an inclined section;

[0014] The straight line segment is parallel to the straight line formed by the plurality of second positioning holes;

[0015] One end of the inclined segment is connected to the straight segment, and the other end is inclined at an angle to the straight segment toward the side away from the second positioning hole.

[0016] A positioning method for a tool template assembly for positioning the cutterhead of a tunneling machine using any of the above-described solutions, comprising:

[0017] S1. Fix the intermediate tool template and the auxiliary arm tool template above the mounting end face of the corresponding intermediate part and the mounting end face of the auxiliary arm, respectively, and arrange the first positioning groove opposite to the mounting end face of the intermediate part and the second positioning groove opposite to the mounting end face of the auxiliary arm.

[0018] S2. Determine the position of the tool holder on the corresponding mounting end face according to the position of the positioning groove.

[0019] Preferably, S1 includes S11;

[0020] S11. Fix the intermediate tool template at a preset position above the mounting end face of the intermediate part of the intermediate tool holder, and the intermediate tool template is parallel to the mounting end face of the intermediate part and extends radially along the mounting end face of the intermediate part.

[0021] Preferably, S1 includes S12;

[0022] S12. Fix the auxiliary arm cutter template at a preset position above the mounting end face of the auxiliary arm on which the auxiliary arm cutter holder is mounted, and make the auxiliary arm cutter template parallel to the mounting end face of the auxiliary arm.

[0023] Preferably, the distance from the bottom of the second positioning groove to the mounting end face of the auxiliary arm is equal to the maximum distance the auxiliary arm hob extends beyond the mounting end face of the auxiliary arm after it is mounted on the auxiliary arm.

[0024] Preferably, S2 includes S21;

[0025] S21. Determine the position of the intermediate tool holder on the middle part based on the position of the first positioning groove.

[0026] Preferably, S2 includes S22;

[0027] S22. Determine the position of the auxiliary arm knife holder on the auxiliary arm according to the position of the second positioning groove.

[0028] Preferably, S1 includes a first fixing fixture for fixing the intermediate tool template and a second fixing fixture for fixing the auxiliary arm tool template;

[0029] The first fixed fixture is rotatably mounted on the middle part;

[0030] The second fixing fixture includes multiple support plates, which are spaced apart on the mounting end face of the auxiliary arm along the length direction of the auxiliary arm. The support plates extend upward along the mounting end face perpendicular to the auxiliary arm. Each support plate is provided with a third positioning hole, which corresponds one-to-one with the multiple first positioning holes and is connected by bolts.

[0031] (III) Beneficial Effects

[0032] The beneficial effects of this invention are:

[0033] (1) The present invention uses the middle tool template and the auxiliary arm tool template to position the tool holders on the middle part and the auxiliary arm respectively. Compared with the triangular tool template in the prior art, it is divided into multiple tool templates, which are small in size, simple in structure and more convenient to use.

[0034] (2) The present invention uses the intermediate tool template and the auxiliary arm tool template to position the tool holders on the intermediate part and the auxiliary arm respectively. It does not require the auxiliary arm to be fixed to the intermediate template. That is, compared with the prior art, the tool holders on the intermediate part and the auxiliary arm can be positioned using small tool templates, reducing the step of fixing the auxiliary arm to the intermediate part. Moreover, when positioning the tool holders on the auxiliary arm, it is not necessary to climb several meters high to operate, reducing the risk of injury to the workers.

[0035] (3) Since the present invention does not require the middle part and the auxiliary arm to be installed together to position the tool holder, compared with the prior art, the required installation space is small, and the middle part and each auxiliary arm can simultaneously position the corresponding tool holder, thereby improving work efficiency and reducing the installation cycle. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of the intermediate tool template in this invention;

[0037] Figure 2This is a schematic diagram of the structure of the first template of the auxiliary arm tool template in this invention;

[0038] Figure 3 This is a schematic diagram of the structure of the second template of the auxiliary arm tool template in this invention;

[0039] Figure 4 This is a schematic diagram of the structure of the third template of the auxiliary arm tool template in this invention;

[0040] Figure 5 This is a schematic diagram of the structure of the fourth template of the auxiliary arm tool template in this invention;

[0041] Figure 6 This is a schematic diagram of the structure of the fifth template of the auxiliary arm tool template in this invention;

[0042] Figure 7 This is a schematic diagram of the combination of the first fixed tooling and the auxiliary arm in this invention;

[0043] Figure 8 This is a schematic diagram of the combination of the second fixed fixture, the auxiliary arm, and the auxiliary arm tool template in this invention.

[0044] Figure 9 This is a schematic diagram of the combination of the second fixed fixture, the intermediate part, and the intermediate tool template in this invention.

[0045] [Explanation of Labels in the Attached Image]

[0046] 1: Intermediate tool template; 11: First positioning groove; 12: Second positioning hole; 2: Auxiliary arm tool template; 21: Second positioning groove; 22: First positioning hole; 23: Second template; 24: Third template; 25: Fourth template; 26: Sixth template; 27: First template; 3: Second fixed fixture; 4: Auxiliary arm; 6: First fixed fixture; 7: Intermediate tool holder; 8: Intermediate part. Detailed Implementation

[0047] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] Example 1

[0049] like Figures 1-6As shown, a tool template assembly for positioning the tool holder of a tunneling machine cutterhead includes a central tool template 1 and an auxiliary arm tool template 2, each being an independent component. The central tool template 1 has multiple spaced-apart first positioning grooves 11 on one side facing inwards. These first positioning grooves 11 are used to determine the position of the central tool holder 7 mounted on the central part 8 of the tunneling machine cutterhead and allow the corresponding central hobbing cutter to pass through. The auxiliary arm tool template 2 is used to determine the position of the auxiliary arm tool holder on the auxiliary arm 4 of the tunneling machine cutterhead. The auxiliary arm tool template 2 also has multiple spaced-apart second positioning grooves 21 on one side facing inwards. These second positioning grooves 21 are used to determine the position of the auxiliary arm tool holder mounted on the auxiliary arm 4 and allow the corresponding auxiliary arm hobbing cutter to pass through. The auxiliary arm tool template 2 includes multiple template sections, with adjacent templates being detachably connected.

[0050] like Figure 9 As shown, the middle part 8 comprises three stacked middle blocks, with the middle tool holder 7 mounted on the top surface of the uppermost middle block. In this invention, when installing the middle tool holder 7 on the middle part 8, it is not necessary to stack the three middle blocks. Instead, the first fixing fixture 6 is installed on the top surface of the corresponding middle block, and then the middle tool template 1 is installed on the first fixing fixture 6 to position the middle tool holder. Compared to existing technologies, the working height for positioning the middle tool holder 7 is significantly reduced, minimizing the risk of injury to workers.

[0051] In existing technology, when determining the position of the cutterhead on the cutterhead, the intermediate section 8 and the auxiliary arm 4 need to be assembled. An auxiliary fixture supporting the cutter template is then installed on the intermediate section 8, and the cutter template is installed on the auxiliary fixture. The cutter template is a triangular structure. However, the tunneling machine cutterhead is approximately 9 meters high and 23 meters in diameter, resulting in a large size and weight of the cutter template, making its installation difficult. Furthermore, to allow the installation of cutterheads on the end face of the intermediate section 8 and multiple auxiliary arms, the cutter template needs to be rotated, which is difficult due to its weight. Additionally, because the tunneling machine cutterhead has a diameter of approximately 23 meters, positioning the cutterhead requires a large area, necessitating a large space to house the cutterhead and install the cutterhead.

[0052] The present invention uses the intermediate tool template 1 and the auxiliary arm tool template 2 to respectively position the tool holders on the intermediate part 8 and the auxiliary arm 4. Compared with the triangular tool template in the prior art, the tool template is divided into multiple segments, which is small in size, simple in structure and more convenient to use.

[0053] The cutterhead of a tunneling machine typically includes an octahedral central section 8 and eight auxiliary arms 4. The auxiliary arms 4 are evenly arranged circumferentially along the central section 8. Before installing the cutterhead rollers, cutter holders must be installed at the corresponding positions, and the cutterhead rollers are installed within the cutter holders. The number, depth, width, and distance between adjacent positioning slots of the first positioning slot 11 and the second positioning slot 21 are determined based on the cutterhead roller configuration on the tunneling machine cutterhead. The relevant parameters of the first positioning slot 11 and the second positioning slot 21 differ for different models of tunneling machine cutterheads. For example... Figure 1 As shown, the intermediate tool template 1 has multiple second positioning holes 12 arranged at intervals along a straight line on the side opposite to the opening direction of the first positioning groove 11. These second positioning holes 12 are used to determine the position of the intermediate tool template 1 above the intermediate part 8, facilitating its fixation. The side of the intermediate tool template 1 with the first positioning groove 11 includes a straight segment and an inclined segment. The straight segment is parallel to the straight line formed by the multiple second positioning holes 12. One end of the inclined segment connects to the straight segment, and the other end is inclined at an angle away from the second positioning holes 12. The shape of the side of the intermediate tool template 1 with the first positioning groove 11 is consistent with the shape and structure of the mounting end face of the hob in the intermediate part 8. Therefore, the angle between the inclined segment and the straight segment is determined based on the shape and structure of the mounting end face of the hob in the intermediate part 8.

[0054] like Figures 2-6 As shown, the auxiliary arm cutter template 2 includes at least one template section. Depending on the diameter of the tunneling machine cutterhead, the auxiliary arm cutter template 2 is divided into different template sections. In this embodiment, the auxiliary arm cutter template 2 consists of five template sections: a first template 27, a second template 23, a third template 24, a fourth template 25, and a sixth template 26. Adjacent templates are fixedly connected by bolts. Because the auxiliary arm 4 is very large, the auxiliary arm cutter template 2 is also very large. Dividing the auxiliary arm cutter template 2 into five sections makes each section smaller and lighter, facilitating the fabrication of the auxiliary arm cutter template 2 and making installation easier. The auxiliary arm cutter template 2 also has a first positioning hole 22, located on the side of the second positioning groove 21 opposite to its opening direction. The first positioning hole 22 is used to position the auxiliary arm cutter template 2 above the corresponding auxiliary arm 4.

[0055] Example 2

[0056] A method for positioning the cutterhead using the cutterhead positioning template of the tunneling machine cutterhead described in any of the above solutions includes:

[0057] S1. Fix the tool templates above the corresponding mounting faces, ensuring the positioning grooves are aligned with the mounting faces. The tool templates include the middle tool template 1 and the auxiliary arm tool template 2, and the mounting faces include the mounting face of the middle part 8 and the mounting face of the auxiliary arm 4. Figure 9For reference, the mounting end face of the middle part 8 is the top end face of the middle part 8. Figure 8 For reference, the mounting end face of the auxiliary arm 4 is the top surface of the auxiliary arm 4. In this design, the cutter holder is not mounted on the mounting end face, but is mounted inside the auxiliary arm 4 or the middle part 8, that is, below the mounting end face. The hob is mounted inside the cutter holder, and the hob extends out of the mounting end face and can pass through the positioning groove. When passing through the positioning groove, all surfaces of the positioning groove of the hob are in contact with each other.

[0058] like Figures 4-6 As shown, specifically, in step S11, the intermediate tool template 1 is fixed at a preset position above the mounting end face of the intermediate part 8 of the intermediate tool holder 7, and the intermediate tool template 1 is parallel to the mounting end face of the intermediate part 8 and extends radially along the mounting end face of the intermediate part 8, and the first positioning groove 11 is arranged opposite to the mounting end face of the intermediate part 8.

[0059] The intermediate tool template 1 is mounted above the intermediate section 8 via a first fixing fixture 6. The first fixing fixture 6 is fixed to the center of the intermediate section 8 and can selectively rotate around the axial direction of the intermediate section 8, and can also rise and fall along the axial direction of the center section. The first fixing fixture 6 includes a vertically movable column fixed to the intermediate section 8, a sleeve fitted on the column, the sleeve being rotatably connected to the column, and a support beam mounted on the side of the sleeve. The intermediate tool template 1 is mounted at the bottom of the support beam. In use, the distance between the intermediate tool template 1 and the intermediate section 8 is adjusted by raising and lowering the column, fixing the intermediate tool template 1 to the bottom of the support beam. The position of a tool holder at a certain location on the intermediate section 8 is determined according to the first positioning groove 11 on the intermediate tool template 1. By rotating the sleeve, the positions of all tool holders on the intermediate section 8 are determined sequentially.

[0060] S12. Fix the auxiliary arm tool template 2 at a preset position above the mounting end face of the auxiliary arm 4 on which the auxiliary arm tool holder is installed, and make the auxiliary arm tool template 2 parallel to the mounting end face of the auxiliary arm 4, with the second positioning groove 21 arranged opposite to the mounting end face of the auxiliary arm 4.

[0061] like Figure 8 As shown, the auxiliary arm cutter template 2 is installed above the mounting end face of the auxiliary arm 4 via the second fixing fixture 3, and the auxiliary arm cutter template 2 is located at the center of the width direction of the mounting end face. Specifically, the auxiliary arm cutter template 2 is installed above the mounting end face of the auxiliary arm 4 via the second fixing fixture 3. Figure 8In this design, the hypotenuse of the triangular auxiliary arm 4 is defined as the "length direction," the extension direction of the second fixing fixture 3 is defined as the "vertical direction," and the direction perpendicular to both the length and vertical directions is defined as the "width direction." The second fixing fixture 3 includes multiple support plates, which are arranged at intervals along the length of the auxiliary arm 4 on its mounting end face. The support plates extend upwards perpendicular to the mounting end face of the auxiliary arm 4. Each support plate has a third positioning hole, which corresponds one-to-one with a portion of the first positioning holes 22 and are connected by bolts.

[0062] The distance from the bottom of the second positioning groove 21 to the mounting end face of the auxiliary arm 4 is equal to the maximum distance the auxiliary arm cutter extends beyond the mounting end face of the auxiliary arm 4 after being installed on the auxiliary arm 4. For a tunneling machine cutterhead, since the size of the auxiliary arm cutter is known, and the maximum distance it extends beyond the mounting end face of the auxiliary arm 4 after being installed on the auxiliary arm 4 is also a constant, the installation position of the auxiliary arm cutter template 2 can be determined accordingly.

[0063] The support plate is installed between two adjacent auxiliary arm tool holders on the auxiliary arm 4. The installation position of the auxiliary arm tool holders on different auxiliary arms 4 is different. Therefore, the installation position of the support plate on each auxiliary arm 4 is also different.

[0064] S2. Determine the position of the tool holder on the corresponding mounting end face according to the position of the positioning groove.

[0065] S21. Determine the position of the intermediate tool holder 7 on the intermediate part 8 based on the position of the first positioning groove 11.

[0066] Specifically, the position of the intermediate tool holder 7 is determined according to the position of the first positioning groove 11, and an intermediate tool holder hole is opened on the middle part 8 to install the intermediate tool holder 7. An intermediate dummy tool is installed in the intermediate tool holder 7 to simulate an intermediate hobbing tool, and the position of the intermediate tool holder 7 is checked to see if it is installed properly.

[0067] S22. Determine the position of the auxiliary arm knife holder on the auxiliary arm 4 based on the position of the second positioning groove 21.

[0068] Specifically, the position of the auxiliary arm tool holder is determined according to the position of the second positioning groove 21, and an auxiliary arm tool holder hole is opened on the auxiliary arm 4 to install the auxiliary arm tool holder. An auxiliary arm dummy tool is installed in the auxiliary arm tool holder to simulate the auxiliary arm hobbing tool, and the position of the auxiliary arm tool holder is checked to see if it is installed properly.

[0069] In the description of this invention, it should be understood that 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0070] 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0071] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0072] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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.

[0073] 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 modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A cutter template assembly for cutter seat positioning of a roadheader cutter head, characterized in that, Including the intermediate tool template (1) and the auxiliary arm tool template (2), which are separate components: The intermediate cutter template (1) has a plurality of spaced first positioning grooves (11) on one side facing inward. The first positioning grooves (11) are used to determine the position of the intermediate cutter holder (7) installed on the intermediate part (8) of the tunneling machine cutterhead, and allow the intermediate hob cutter at the corresponding position to pass through. The auxiliary arm cutter template (2) is used to determine the position of the auxiliary arm cutter holder on the auxiliary arm (4) of the tunneling machine cutterhead. Multiple second positioning grooves (21) are opened inward on one side of the auxiliary arm cutter template (2). The second positioning grooves (21) are used to determine the position of the auxiliary arm cutter holder installed on the auxiliary arm (4) and allow the auxiliary arm hobbing cutter at the corresponding position to pass through. The auxiliary arm tool template (2) includes multiple templates, and adjacent templates can be detachably connected.

2. The cutter head cutter pocket positioning cutter template assembly of claim 1, wherein, The auxiliary arm cutter template (2) is also provided with a first positioning hole (22). The first positioning hole (22) is located on the side opposite to the opening direction of the second positioning groove (21). The first positioning hole (22) is used to position the auxiliary arm cutter template (2) above the corresponding auxiliary arm (4).

3. The cutter head cutter pocket positioning cutter template assembly of claim 1, wherein, The intermediate tool template (1) is located on the side opposite to the opening direction of the first positioning groove (11) and has a plurality of second positioning holes (12) arranged at intervals along a straight line. The side of the tool template (1) with the first positioning groove (11) in the middle part includes a straight section and an inclined section; The straight line segment is parallel to the straight line formed by the plurality of second positioning holes (12); One end of the inclined segment is connected to the straight segment, and the other end is inclined at an angle to the straight segment toward the side away from the second positioning hole (12).

4. A positioning method using the tool template assembly for positioning the tool holder of a tunneling machine cutterhead according to any one of claims 1 to 3, characterized in that, include: S1. Fix the intermediate tool template (1) and the auxiliary arm tool template (2) above the mounting end face of the corresponding intermediate part (8) and the mounting end face of the auxiliary arm (4), respectively, and arrange the first positioning groove (11) opposite to the mounting end face of the intermediate part (8) and the second positioning groove (21) opposite to the mounting end face of the auxiliary arm (4). S2. Determine the position of the tool holder on the corresponding mounting end face according to the position of the positioning groove.

5. The positioning method for the tool template assembly for positioning the tool holder of the tunneling machine cutterhead as described in claim 4, characterized in that, S1 includes S11; S11. Fix the intermediate tool template (1) at a preset position above the mounting end face of the intermediate part (8) on which the intermediate tool holder (7) is mounted, and the intermediate tool template (1) is parallel to the mounting end face of the intermediate part (8) and extends radially along the mounting end face of the intermediate part (8).

6. The positioning method of the tool template assembly for positioning the tool holder of the tunneling machine cutterhead as described in claim 4, characterized in that, S1 includes S12; S12. Fix the auxiliary arm cutter template (2) at a preset position above the mounting end face of the auxiliary arm (4) on which the auxiliary arm cutter holder is installed, and make the auxiliary arm cutter template (2) parallel to the mounting end face of the auxiliary arm (4).

7. The positioning method for the tool template assembly for positioning the tool holder of the tunneling machine cutterhead as described in claim 4, characterized in that, The distance from the bottom of the second positioning groove (21) to the mounting end face of the auxiliary arm is equal to the maximum distance that the auxiliary arm hob extends beyond the mounting end face of the auxiliary arm (4) after it is mounted on the auxiliary arm (4).

8. The positioning method of the tool template assembly for positioning the tool holder of the tunneling machine cutterhead as described in claim 4, characterized in that, S2 includes S21; S21. Determine the position of the intermediate tool holder (7) on the intermediate part (8) according to the position of the first positioning groove (11).

9. The positioning method of the tool template assembly for positioning the tool holder of the tunneling machine cutterhead as described in claim 4, characterized in that, S2 includes S22; S22. Determine the position of the auxiliary arm knife holder on the auxiliary arm (4) according to the position of the second positioning groove (21).

10. The positioning method of the tool template assembly for positioning the tool holder of the tunneling machine cutterhead as described in claim 4, characterized in that, S1 includes a first fixing fixture (6) for fixing the intermediate tool template (1) and a second fixing fixture (3) for fixing the auxiliary arm tool template (2). The first fixed fixture (6) is rotatably mounted on the middle part (8); The second fixed fixture (3) includes multiple support plates. The multiple support plates are arranged at intervals on the mounting end face of the auxiliary arm (4) along the length direction of the auxiliary arm (4). The support plates extend upward along the mounting end face perpendicular to the auxiliary arm (4). Each support plate is provided with a third positioning hole. The third positioning hole corresponds one-to-one with the multiple first positioning holes (22) and is connected by bolts.

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