Hole forming tool and hole forming method for ceramic matrix composite part

Abstract

The invention relates to a hole making device and a hole making method, in particular to a hole making tool and a hole making method for a ceramic matrix composite part, and solves the problems of high connecting hole making difficulty, poor precision, low interchangeability of sunk screws, non-ideal hole making effect, low production cost and the like in the existing ceramic matrix composite connecting and assembling process. And the batch hole forming requirement of the ceramic matrix composite material connecting holes is difficult to meet. The drilling tool comprises a tool body, a plurality of drilling bushings, a plurality of tapping bushings and a grinding cutter. The tool body is attached to and fixed to a part to be drilled. The hole forming insert sleeve is used for being arranged in a preset hole, and a bottom hole is drilled and milled in a part to be subjected to hole forming through an external hole forming tool. The tapping bushing is used for being arranged in a preset hole, and tapping is conducted on the inner wall of the bottom hole through an external tapping tool. And the grinding cutter is arranged in the preset hole, is connected with external power equipment and is used for processing a countersunk head on the tapped bottom hole. According to the hole making method, batch hole making can be achieved.

Description

Technical Field

[0001] The invention relates to a hole making device and a hole making method, and in particular to a hole making tool and a hole making method for ceramic-based composite material parts. Background Art

[0002] As a ceramic-based composite material that combines the advantages of metal materials, ceramic materials and carbon materials, it has the characteristics of high temperature resistance, low density, high specific strength, high specific modulus, oxidation resistance, ablation resistance, insensitivity to cracks, and not prone to catastrophic damage. It is widely used in aviation, aerospace, nuclear energy, photovoltaics and other fields. The connectors in ceramic-based composite products play a key role in connecting components and bearing stress, and are an important part of ceramic-based composite products that cannot be ignored.

[0003] In order to solve the connection problem between ceramic-based composite parts, connectors are usually used for fixed connection, and countersunk screws are an important type of connector. At present, the connection holes of countersunk screws in ceramic-based composite parts are often made by pasting 1:1 drawings on the surface of the parts. After the bottom hole is processed by tools such as glass drills and PCD milling cutters, the holes are expanded by reamer. This type of hole making method involves manual positioning and calibration, bottom hole processing, and hole expansion. The hole making process is greatly affected by human factors, resulting in poor hole position accuracy. In addition, when the hole making surface is non-planar, the hole making difficulty is higher, and it is difficult to ensure that the hole position is perpendicular to the surface of the part, which easily leads to low interchangeability of countersunk screws between the hole positions and unsatisfactory hole making effects. It is difficult to meet the batch hole making requirements for inclined connection holes in ceramic-based composite materials. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problems in the existing ceramic-based composite material connection and assembly process, such as high difficulty in making connection holes, poor precision, low interchangeability of countersunk screws, unsatisfactory hole making effect, and difficulty in meeting the requirements for batch hole making of ceramic-based composite material connection holes, and to provide a hole making tool and hole making method for ceramic-based composite material parts.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A hole-making tool for ceramic-based composite parts, used for preparing countersunk screw holes; the special feature of the tool is that it includes a tool body, a plurality of hole-making inserts, a plurality of tapping inserts and a grinding tool;

[0007] The tooling body is provided with N preset holes, the inner surface of which is attached to and fixed to the hole-making surface of the component to be hole-made, N≥2;

[0008] The outer diameters of the hole-making sleeve, the tapping sleeve and the grinding tool are respectively matched with the inner diameter of the preset hole. The hole-making sleeve is used to be arranged in the preset hole and fixedly connected to the tooling body. A through hole is provided in the hole-making sleeve for external drilling and milling equipment to drill and mill the bottom hole of the component to be drilled through the through hole.

[0009] The tapping sleeve is used to be arranged in a preset hole and fixedly connected to the tooling body. A threaded hole is provided in the tapping sleeve, and an external tapping tool is used to tap the inner wall of the bottom hole through the threaded hole.

[0010] The grinding tool is used to be set in a preset hole, connected to an external power device and to process a countersunk head on the bottom hole after tapping.

[0011] Furthermore, the tooling body is respectively provided with connecting holes on one side of the N preset holes; the hole-making sleeve includes a punching part and a first connecting part connected to the punching part; the through hole is arranged on the punching part; the first connecting part is connected to the connecting hole and is used to fix the punching part; the tapping sleeve includes a tapping part and a second connecting part connected to the tapping part; the threaded hole is arranged on the tapping part, and the inner diameter of the threaded hole is the same as the diameter of the through hole; the second connecting part is connected to the connecting hole and is used to fix the tapping part; the punching part and the tapping part are both cylinders, and their outer diameters are adapted to the inner diameter of the preset hole; the punching part is used to be arranged in the preset hole, and a glass drill is used to drill and mill the bottom hole of the component to be holed through the through hole; the tapping part is used to be arranged in the preset hole, and a tap is used to tap the inner wall of the bottom hole through the threaded hole.

[0012] Furthermore, the grinding tool includes a clamping body, a limiting body and a grinding body which are coaxially connected in sequence from top to bottom along the grinding direction; the upper end of the clamping body is used to connect to an external power device; the diameter of the limiting body is larger than the diameter of the corresponding preset hole; the grinding body includes a tool body and a grinding head; one end of the tool body is connected to the limiting body, and the other end is connected to the large end of the grinding head; the height of the tool body is equal to the axial length of the preset hole; the conical surface of the grinding head is the same size as the countersunk head of the component to be holed, and diamond particles are arranged on the outer surface of the truncated table for processing the countersunk head of the bottom hole.

[0013] Furthermore, the tooling body includes an operating plate that fits the hole-making surface of the component to be hole-made, and each operating plate is connected to each other; the preset holes and the connecting holes are arranged on the operating plate.

[0014] Furthermore, the tooling body includes two operating panels and a connecting plate; the two operating panels are arranged opposite to each other and connected by the connecting plate to form a U-shaped structure; the inner surfaces of the two operating panels are respectively fitted with the hole-making surfaces on both sides of the parts to be hole-made; the preset holes and the connecting holes are arranged on the operating panels.

[0015] Furthermore, the number of the hole-making inserts and the tapping inserts is the same as the number of the preset holes; the materials of the clamping body and the tool body are both tungsten carbide hard alloy; and the material of the grinding head is electroplated diamond.

[0016] At the same time, a hole making method for ceramic matrix composite parts is also provided. Based on the above-mentioned hole making tool for ceramic matrix composite parts, the method is special in that it includes the following steps:

[0017] 1] Make the inner surface of the tooling body fit and fix with the hole-making surface of the part to be holed;

[0018] 2] Install multiple hole-making sleeves in the preset holes on the tooling body, connect and fix them, and then use external drilling and milling equipment to drill and mill the bottom holes of the parts to be drilled one by one. After the drilling and milling is completed, remove the multiple hole-making sleeves;

[0019] 3] Install multiple tapping sleeves in the preset holes on the tooling body, connect and fix them, and then use external tapping equipment to tap the N bottom holes drilled and milled in step 2] one by one. After the tapping is completed, remove the multiple tapping sleeves;

[0020] 4] Insert the grinding tool vertically into the preset hole on the tool body, and connect the grinding tool to the external power device to countersunk the bottom holes tapped in step 3] of the tool body one by one to complete the hole making of the ceramic-based composite material.

[0021] Further, step 2] is specifically as follows:

[0022] Install the punching parts of the plurality of hole-making inserts into the preset holes on the operation panel, then connect the first connecting part with the connecting hole of the tooling body, use a glass drill to drill the bottom holes of the parts to be drilled one by one, and remove the plurality of hole-making inserts after the drilling and milling is completed;

[0023] Step 3] Specifically:

[0024] Install the tapping parts of multiple tapping sleeves in the preset holes on the operating panel, then connect the second connecting part to the connecting hole of the tooling body, use a tap to tap the N bottom holes drilled and milled in step 2] one by one, and remove the multiple tapping sleeves after the tapping is completed.

[0025] Further, step 4] is specifically as follows:

[0026] Insert the grinding body vertically into the preset hole on the operating panel, and connect the clamping body to the external power equipment so that the small end face of the grinding head is opposite to the tapped bottom hole of the component to be holed; use the external power equipment to feed the grinding head at a uniform speed to process the countersunk, and when the limiter is close to the outer surface of the tooling body, reduce the feed grinding speed; when the limiter is in contact with the outer surface of the tooling body, withdraw the grinding head until all the tapped bottom holes in step 3 are countersunk one by one, then remove the tooling body to complete the hole making of the ceramic-based composite material.

[0027] Beneficial effects of the present invention:

[0028] 1. The present invention discloses a hole-making tool for ceramic-based composite parts. The tool body is fitted with a planar or non-planar part to be hole-made, and the hole is made after being aligned and fixed with the part to be hole-made. Compared with the method of positioning and making holes by pasting a 1:1 drawing on the surface of the part, the position accuracy between holes and between holes and the part to be hole-made is greatly improved, and the difficulty of hole making is reduced.

[0029] 2. The present invention discloses a hole-making tool for ceramic-based composite parts, which limits the external hole-making tool and the tapping tool by means of a hole-making sleeve and a tapping sleeve, thereby ensuring the perpendicularity of the hole position, the tapping thread and the surface of the part to be holed, and greatly improving the connection effect between product components.

[0030] 3. The present invention discloses a hole-making tool for ceramic-based composite parts, which uses a grinding tool to process the countersunk head of the connecting hole. By coordinating the grinding tool with the hole position, the limiting body and the tool body, it is ensured that the connecting hole and the countersunk head are perpendicular to the surface of the part to be holed, while greatly improving the consistency of the connecting hole and ensuring the interchangeability of the countersunk screws.

[0031] 4. The tool body of the hole-making tool for ceramic-based composite parts of the present invention is suitable for batch hole-making of planar or non-planar parts to be hole-made.

[0032] 5. In a hole-making tool for ceramic-based composite parts of the present invention, the tool body includes an operating plate that fits the hole-making surface of the part to be holed, and the operating plates are interconnected, which can be applicable to the situation where the surfaces of the part to be holed are not in the same plane; the tool body is composed of two operating plates arranged opposite to each other, and connected by a connecting plate to form a U-shaped structure, which can be applicable to the situation where holes need to be made on both sides of the part to be holed.

[0033] 6. The present invention provides a method for making holes in ceramic-based composite parts. The tooling body cooperates with a hole-making sleeve, a tapping sleeve and a grinding tool respectively to achieve batch hole-making. The hole-making sleeve, the tapping sleeve and the grinding tool are limited by preset holes on the tooling body, so that the verticality of the countersunk screw holes can be improved, thereby improving the hole-making accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is an exploded view of an embodiment of a hole-making tool for ceramic-based composite parts of the present invention (the grinding tool is not shown);

[0035] Figure 2 It is a structural schematic diagram of a hole-making insert in an embodiment of a hole-making tool for ceramic-based composite material parts of the present invention;

[0036] Figure 3It is a structural schematic diagram of a tapping insert in an embodiment of a hole-making tool for ceramic-based composite material parts of the present invention;

[0037] Figure 4 It is a structural schematic diagram of a grinding tool in an embodiment of a hole-making tool for ceramic-based composite material parts of the present invention;

[0038] Figure 5 It is a structural schematic diagram of a tool body in an embodiment of a hole-making tool for ceramic-based composite material parts of the present invention;

[0039] Figure 6 It is a structural schematic diagram of a grinding countersunk head of a grinding tool in an embodiment of a hole-making tool for ceramic-based composite material parts of the present invention;

[0040] Figure 7 It is a structural schematic diagram of a hole-making tooling embodiment of the present invention for ceramic-based composite material parts, in which a tooling body and a hole-making insert are installed on a flat part to be hole-made;

[0041] Figure 8 It is a schematic structural diagram of a countersunk screw hole after grinding in an embodiment of a hole-making tool for ceramic-based composite material parts of the present invention;

[0042] Fig. 9 It is a structural schematic diagram of a hole-making tooling embodiment of the present invention for ceramic-based composite material parts, in which a tooling body and a tapping insert are installed on a non-planar part to be hole-made;

[0043] Fig.10 The present invention is a schematic diagram of the installation structure of a tool body, a hole making sleeve, a tapping sleeve and a non-planar component to be holed in a hole making tool embodiment for a ceramic-based composite component of the present invention.

[0044] Description of reference numerals:

[0045] 1- tooling body, 2- hole making sleeve, 21- punching part, 22- first connecting part, 3- tapping sleeve, 31- tapping part, 32- second connecting part, 41- preset hole, 42- connecting hole, 5- skin part, 6- leading edge part, 7- sealing plate part, 9- parts to be holed, 10- grinding tool, 101- clamping body, 102- limiting body, 103- grinding body, 11- tool body, 12- grinding head, 13- operation panel, 14- connecting plate. DETAILED DESCRIPTION

[0046] like Figure 1As shown, a hole-making tool for ceramic-based composite parts is used to prepare countersunk screw holes, which includes a tool body 1, multiple hole-making sleeves 2, multiple tapping sleeves 3 and a grinding tool 10; the inner surface of the tool body 1 is in contact with the hole-making surface of the part 9 to be holed, and is provided with N preset holes 41 and connecting holes 42; N ≥ 2; the normal vector of the hole-making surface of the part 9 to be holed is parallel to the central axis of the preset hole 41; wherein the number of the hole-making sleeves 2, the tapping sleeves 3 and the preset holes 41 is the same; the hole-making sleeves 2, the tapping sleeves 3 and the grinding tool 10 are The outer diameters are respectively matched with the inner diameters of the preset holes 41; the hole-making sleeve 2 is used to be arranged in the preset hole 41 and is fixedly connected to the tooling body 1; a through hole is provided in the hole-making sleeve 2 for external drilling and milling equipment to drill and mill the bottom hole of the component 9 to be holed through the through hole; the tapping sleeve 3 is used to be arranged in the preset hole 41 and is fixedly connected to the tooling body 1; a threaded hole is provided in the tapping sleeve 3 for an external tapping tool to tap the inner wall of the bottom hole through the threaded hole; the grinding tool 10 is used to be set in the preset hole 41, connected to an external power equipment and process the countersunk head of the bottom hole after tapping.

[0047] like Figure 2 As shown, the tool body 1 is provided with connecting holes 42 on one side of the N preset holes 41; the hole-making insert 2 includes a punching portion 21 and a first connecting portion 22 connected to the punching portion 21; the through hole is provided on the punching portion 21; the first connecting portion 22 is connected to the connecting hole 42 for fixing the punching portion 21; Figure 3 As shown, the tapping sleeve 3 includes a tapping portion 31 and a second connecting portion 32 connected to the tapping portion 31; the threaded hole is arranged on the tapping portion 31, and the inner diameter of the threaded hole is the same as the diameter of the through hole; the second connecting portion 32 is connected to the connecting hole 42, and is used to fix the tapping portion 31; the punching portion 21 and the tapping portion 31 are both cylindrical, and their outer diameters are adapted to the inner diameter of the preset hole 41; the punching portion 21 is used to be arranged in the preset hole 41, and a glass drill is used to drill and mill the bottom hole of the component 9 to be drilled through the through hole; when the tapping portion 31 is used to be arranged in the preset hole 41, a tap is used to tap the inner wall of the bottom hole through the threaded hole.

[0048] like Figure 4As shown, the grinding tool 10 includes a clamping body 101, a limiting body 102 and a grinding body 103 which are coaxially connected from top to bottom along the grinding direction; the upper end of the clamping body 101 is used to connect with an external power device; the diameter of the limiting body 102 is larger than the diameter of the corresponding preset hole 41; in the process of machining the countersunk head, the limiting body 102 plays a warning and limiting role to ensure the consistency of the countersunk screw hole. The grinding body 103 includes a tool body 11 and a grinding head 12; one end of the tool body 11 is connected to the limiting body 102, and the other end is connected to the large end of the grinding head 12; the height of the tool body 11 is equal to the axial length of the preset hole 41; the conical surface of the grinding head 12 is the same as the countersunk size of the component 9 to be made, and diamond particles are arranged on the outer surface of the truncated cone for machining the countersunk head of the bottom hole. The materials of the clamping body 101 and the tool body 11 are both tungsten carbide cemented carbide; the material of the grinding head 12 is electroplated diamond.

[0049] like Figure 5 As shown, the tool body 1 includes two operating panels 13 and a connecting plate 14; the two operating panels 13 are arranged opposite to each other and connected by the connecting plate 14 to form a U-shaped structure; the inner surfaces of the two operating panels 13 are respectively fitted with the hole-making surfaces on both sides of the component 9 to be hole-made; Figure 7 As shown in FIG. 1 , when the surface of the component 9 to be holed is a plane, the sealing plate 7 is used to limit the position of the component 9 to be holed, and then the U-shaped structure is passed through the leading edge member 6 and clamped on the skin member 5 (i.e., the component 9 to be holed) to perform batch hole making. In other embodiments, when the surface of the component 9 to be holed is a non-planar surface (i.e., the hole making surfaces of the component to be holed are no longer on the same plane), as shown in FIG. Fig. 9 , Fig.10 As shown, the tool body 1 includes two operating panels 13 that fit the hole-making surface of the component 1 to be hole-made, and the operating panels 13 are connected to each other; the preset holes 41 and the connecting holes 42 are set on the operating panels 13.

[0050] At the same time, the present invention provides a hole-making method for ceramic-based composite material parts, based on the above-mentioned hole-making tool for ceramic-based composite material parts, comprising the following steps:

[0051] 1] Make the inner surface of the tool body 1 fit and fix the hole-making surface of the component 9 to be hole-made;

[0052] 2] Install the punching parts 21 of the plurality of hole-making inserts 2 into the preset holes 41 on the operating panel 13, and then connect and fix the first connecting part 22 to the connecting hole 42 of the tooling body 1, and use a glass drill to drill the bottom holes of the parts 9 to be drilled one by one. After the drilling and milling, remove the plurality of hole-making inserts 2;

[0053] 3] Install the tapping parts 31 of the multiple tapping sleeves 3 in the preset holes 41 on the operating panel 13, and then connect and fix the second connecting part 32 to the connecting hole 42 of the tooling body 1, and use a tap to tap the N bottom holes drilled and milled in step 2] one by one, and remove the multiple tapping sleeves 3 after the tapping is completed;

[0054] 4] If Figure 6 As shown, the grinding body 103 is vertically inserted into the preset hole 41 on the operating plate 13, and the clamping body 101 is connected to the external power device, so that the small end face of the grinding head 12 is opposite to the bottom hole of the part 9 to be holed after tapping; the external power device is used to feed the grinding head 12 at a uniform speed to process the countersunk, and when the limiting body 102 is close to the outer surface of the tooling body 1, the feeding grinding speed is reduced; when the limiting body 102 is in contact with the outer surface of the tooling body 1, the grinding head 12 is withdrawn until all the bottom holes after tapping in step 3] are countersunk one by one, and then the tooling body 1 is removed to complete the hole making of the ceramic matrix composite material, see Figure 8 .

Claims

1. A hole-making tool for ceramic matrix composite parts, used for preparing countersunk screw holes; characterized in that: It comprises a tool body (1), a plurality of hole-making inserts (2), a plurality of tapping inserts (3) and a grinding tool (10); The tool body (1) is provided with N preset holes (41), the inner surface of which is in contact with and fixed to the hole-making surface of the component (9) to be hole-made, N≥2; The outer diameters of the hole-making sleeve (2), the tapping sleeve (3) and the grinding tool (10) are respectively adapted to the inner diameter of the preset hole (41); the hole-making sleeve (2) is used to be arranged in the preset hole (41) and is fixedly connected to the tooling body (1); a through hole is provided in the hole-making sleeve (2) for an external drilling and milling device to drill a bottom hole in the component (9) to be drilled through the through hole; The tapping sleeve (3) is used to be arranged in the preset hole (41) and is fixedly connected to the tool body (1); a threaded hole is provided in the tapping sleeve (3) for an external tapping tool to tap the inner wall of the bottom hole through the threaded hole; The grinding tool (10) is used to be arranged in a preset hole (41), connected to an external power device and to process a countersunk head on the bottom hole after tapping.

2. The hole-making tool for ceramic matrix composite parts according to claim 1, characterized in that: The tool body (1) is provided with connection holes (42) on one side of the N preset holes (41); The hole-making sleeve (2) comprises a punching portion (21) and a first connecting portion (22) connected to the punching portion (21); the through hole is arranged on the punching portion (21); the first connecting portion (22) is connected to the connecting hole (42) and is used to fix the punching portion (21); The tapping sleeve (3) comprises a tapping portion (31) and a second connecting portion (32) connected to the tapping portion (31); the threaded hole is arranged on the tapping portion (31), and the inner diameter of the threaded hole is the same as the diameter of the through hole; the second connecting portion (32) is connected to the connecting hole (42) and is used to fix the tapping portion (31); The punching part (21) and the tapping part (31) are both cylindrical, and their outer diameters are compatible with the inner diameter of the preset hole (41); the punching part (21) is used to be arranged in the preset hole (41), and a glass drill is used to drill and mill the bottom hole of the component to be drilled (9) through the through hole; the tapping part (31) is used to be arranged in the preset hole (41), and a tap is used to tap the inner wall of the bottom hole through the threaded hole.

3. The hole-making tool for ceramic matrix composite parts according to claim 2, characterized in that: The grinding tool (10) comprises a clamping body (101), a limiting body (102) and a grinding body (103) which are coaxially connected in sequence from top to bottom along a grinding direction; The upper end of the clamping body (101) is used to connect to an external power device; The diameter of the limiting body (102) is greater than the diameter of the corresponding preset hole (41); The grinding body (103) comprises a tool body (11) and a grinding head (12); one end of the tool body (11) is connected to the limiting body (102), and the other end is connected to the large end of the grinding head (12); the height of the tool body (11) is equal to the axial length of the preset hole (41); the conical surface of the grinding head (12) is the same size as the countersunk head of the component (9) to be holed, and diamond particles are arranged on the outer surface of the truncated cone for machining the countersunk head of the bottom hole.

4. The hole-making tool for ceramic matrix composite parts according to claim 3, characterized in that: The tool body (1) comprises an operating plate (13) which is in contact with the hole-making surface of the component (9) to be hole-made, and each operating plate (13) is connected to each other; The preset hole (41) and the connection hole (42) are arranged on the operation panel (13).

5. The hole-making tool for ceramic matrix composite parts according to claim 3, characterized in that: The tool body (1) comprises two operating plates (13) and a connecting plate (14); the two operating plates (13) are arranged opposite to each other and connected by the connecting plate (14) to form a U-shaped structure; the inner surfaces of the two operating plates (13) are respectively fitted with the hole-making surfaces on both sides of the component (9) to be hole-made; The preset hole (41) and the connection hole (42) are arranged on the operation panel (13).

6. The hole-making tool for ceramic matrix composite parts according to claim 4 or 5, characterized in that: The number of the hole-making sleeves (2) and the tapping sleeves (3) is the same as the number of the preset holes (41); The materials of the clamping body (101) and the tool body (11) are both tungsten carbide hard alloy; The material of the grinding head (12) is electroplated diamond.

7. A method for making holes in ceramic matrix composite parts, based on a hole making tool for ceramic matrix composite parts according to any one of claims 1 to 6, characterized in that: The following steps are involved: 1] The inner surface of the tool body (1) is fitted and fixed to the hole-making surface of the component (9) to be hole-made; 2] Installing a plurality of hole-making inserts (2) in the preset holes (41) on the tooling body (1), and connecting and fixing them, and then using external drilling and milling equipment to drill and mill the bottom holes of the components (9) to be drilled one by one, and removing the plurality of hole-making inserts (2) after the drilling and milling is completed; 3] Installing a plurality of tapping sleeves (3) in the preset holes (41) on the tooling body (1), and connecting and fixing them, and then tapping the N bottom holes drilled and milled in step 2] one by one using an external tapping device, and removing the plurality of tapping sleeves (3) after the tapping is completed; 4] Insert the grinding tool (10) vertically into the preset hole (41) on the tool body (1), and connect the grinding tool (10) to an external power device to countersunk the bottom holes tapped in step 3] of the tool body (1) one by one, thereby completing the hole making of the ceramic matrix composite material.

8. The hole making method for ceramic matrix composite parts according to claim 7, characterized in that: Step 2] Specifically: The punching parts (21) of the plurality of hole-making inserts (2) are installed in the preset holes (41) on the operation panel (13), and then the first connecting part (22) is connected to the connecting hole (42) of the tooling body (1), and the bottom holes of the parts (9) to be drilled are drilled one by one using a glass drill, and after the drilling and milling are completed, the plurality of hole-making inserts (2) are removed; Step 3] Specifically: The tapping parts (31) of the plurality of tapping sleeves (3) are installed in the preset holes (41) on the operating panel (13), and then the second connecting part (32) is connected to the connecting hole (42) of the tooling body (1), and the N bottom holes drilled and milled in step 2] are tapped one by one using a tap, and after the tapping is completed, the plurality of tapping sleeves (3) are removed.

9. The hole making method for ceramic matrix composite parts according to claim 8, characterized in that: Step 4] Specifically: The grinding body (103) is vertically inserted into the preset hole (41) on the operating panel (13), and the clamping body (101) is connected to an external power device so that the small end face of the grinding head (12) is opposite to the tapped bottom hole of the component (9) to be holed; the grinding head (12) is fed at a uniform speed by the external power device to process the countersunk head, and when the limiting body (102) is close to the outer surface of the tooling body (1), the feeding grinding speed is reduced; when the limiting body (102) is in contact with the outer surface of the tooling body (1), the grinding head (12) is withdrawn until all the tapped bottom holes in step 3 are countersunk one by one, and then the tooling body (1) is removed to complete the hole making of the ceramic matrix composite material.

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