Testing device for manufacturing drilling hob

Abstract

The invention relates to the technical field of drilling hobs, in particular to a testing device for manufacturing a drilling hob, which comprises a numerical control machine tool, and the numerical control machine tool comprises a tool assembly and a three-jaw chuck; the three-jaw chuck is used for clamping the hob drill bit and driving the hob drill bit to rotate; the tool assembly comprises a tool base, a threading tool is arranged on the end face of the tool base, and the threading tool is used for turning internal threads at the connecting position of the front end of the hob drill bit. The outer side of the tool base is fixedly sleeved with a thread testing ring, and the thread testing ring is matched with the thread connecting position of the hob drill bit. The tool assembly further comprises a linear reciprocating mechanism and a displacement sensor, a testing ejector rod of the displacement sensor is kept in contact with one end face of the thread testing ring, and the linear reciprocating mechanism is used for driving the displacement sensor to move between the thread testing ring and the end face of the hob drill bit in a reciprocating mode. And the integrated function of thread machining and testing is conveniently and efficiently realized.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling cutters, in particular to a testing device for manufacturing drilling cutters. Background Art

[0002] Roller cutter bits for drilling are one of the most commonly used drill bit types in fields such as oil, natural gas, geothermal, mineral exploration, and water well drilling. Since the drill bit itself needs to rotate continuously at high speed during use, the accuracy and reliability of the bearing sealing system in the roller cutter bit process are key factors in determining the performance and life of the drill bit.

[0003] In the finishing process of a roller cutter drill, a threaded joint needs to be machined. Usually, the staff needs to lift the drill bit and install it on the lathe chuck, use an alloy turning tool to probe into the drill bit, and machine a connecting thread at the connection position at the front end of the drill bit body to facilitate the later installation of the protective cover of the bearing system. In order to ensure the positional accuracy and reliability of the subsequent installation of the bearing system structure, usually after the thread processing is completed, the staff needs to screw the test protective cover into the machined threaded interface for a thread accuracy test. Whether the protective cover is screwed in and whether it is on the same plane as the front end face of the drill bit after being screwed in can be used to determine whether the processing accuracy of the connecting thread meets the standard.

[0004] However, the drill body that has just completed thread processing will generate a lot of heat, especially the front thread connection. At this time, if the staff screws in the protective cover for testing, there will be personal safety hazards and burns are likely to occur. In addition, it is not easy to detect small dimensional deviations with the naked eye. At this time, the drill body needs to be removed from the machine tool and then accurately tested using professional measuring tools. However, the drill body itself is heavy, and the staff will undoubtedly waste processing time and reduce work efficiency by lifting and removing it and placing it on the test tooling.

[0005] Therefore, it is necessary to provide a testing device for drilling cutter manufacturing, which can achieve the functions of thread processing and testing in one. Summary of the Invention

[0006] The object of the present invention is to provide a testing device for manufacturing drilling roller cutters to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a testing device for manufacturing drilling cutters, comprising a numerically controlled machine tool, The CNC machine tool includes a tooling assembly and a three-jaw chuck; The three-jaw chuck is used to clamp the roller cutter bit and rotate it; The tooling assembly includes a tooling seat, and a thread turning tool is provided on the end surface of the tooling seat. The thread turning tool is used to turn the internal thread at the front end connection of the hob drill bit; A thread test ring is fixedly sleeved on the outer side of the tooling seat, and the thread test ring is adapted to the threaded connection of the roller cutter drill bit; The tooling assembly also includes a linear reciprocating mechanism and a displacement sensor. The test push rod of the displacement sensor maintains contact with one end face of the threaded test ring. The linear reciprocating mechanism is used to drive the displacement sensor to move back and forth between the threaded test ring and the end face of the roller drill bit.

[0008] In one embodiment, a fixed cylinder seat is provided on the middle side of the tooling assembly, one end of the fixed cylinder seat is connected to the tooling seat, and a transverse groove for accommodating the displacement sensor is provided at the upper end of the fixed cylinder seat. A pair of limit blocks are fixedly connected at both ends of the transverse groove, and a limit transverse hole is provided on the inner side of the limit block. Ring sleeves are provided at both ends of the displacement sensor housing, and the ring sleeves are adapted to the limit transverse holes.

[0009] In one embodiment, the fixed cylinder seat includes a pair of clamping plates and a center seat, a center shaft is rotatably connected between the pair of clamping plates, a pair of square top blocks are fixedly connected to the middle side of the center shaft, the four corners of the square top blocks are provided with round chamfers, and a cylindrical hole for accommodating the square top blocks is provided on the middle side of the center seat.

[0010] In one embodiment, the upper end of the cylindrical hole is connected to the transverse groove, the upper end of the square top block is contacted with a roller, a center block is rotatably connected between a pair of rollers, the upper end of the center block is fixedly connected to a top plate, and the two ends of the top plate are fixedly connected to a guide rod, and a guide hole is opened on the lower side of the transverse groove of the clamping plate, the guide hole is adapted to the guide rod, and a tension spring is connected between the guide hole and the guide rod.

[0011] In one embodiment, a ball is provided at the head end of the test push rod of the displacement sensor.

[0012] In one embodiment, one end of the fixed cylinder seat is rotatably connected to the tooling seat, an adaptive circular groove is provided on the inner side of the clamping disk, one end of the tooling seat is fixedly connected to a bearing disk 1, a roller is provided in a ring shape on the outer side of the bearing disk 1, the bearing disk 1 is adapted to the adaptive circular groove, and one end of the central axis passes through the bearing disk 1 and is fixedly connected to the tooling seat.

[0013] In one embodiment, a bearing disk 2 is similarly provided on one side of the other side of the clamping disk, one end of the bearing disk 2 is fixedly connected to a sliding seat, and limiting grooves are provided on the four sides of the sliding seat. One end of the sliding seat slides to fit the limiting cavity, and the inner side of the limiting cavity is adapted to the sliding seat. The other end of the central axis passes through the bearing disk 2 and is fixedly connected to the sliding seat.

[0014] In one embodiment, the lower end of the limiting cavity is fixedly connected to an extension arc plate, the inner side of the extension arc plate is provided with a guide rail recess, the upper side of the extension arc plate is slidingly engaged with the fixed cylinder seat, the lower side of the fixed cylinder seat is provided with a guide rail protrusion, the guide rail protrusion is adapted to the guide rail concave part, one end of the fixed cylinder seat is fixedly connected to a guide rod, one end of the limiting cavity is provided with a guide groove, and the guide rod is slidingly engaged with the guide groove.

[0015] In one embodiment, the lower ends of the extending arc plate and the limiting cavity are fixedly connected to an X-axis sliding base.

[0016] Compared with the prior art, the present invention has the following beneficial effects: in the present invention, the tooling seat drives the thread test ring to move to the position where it contacts the threads of the roller cutter drill bit, and then the tooling seat restricts the thread test ring from rotating. Similarly, the three-jaw chuck drives the roller cutter drill bit to rotate relative to the thread test ring, thereby screwing the thread test ring into the roller cutter drill bit along its thread lines. When the thread test ring completes the screw-in test, the displacement sensor is driven by the linear reciprocating mechanism to move back and forth, so that the test push rod moves back and forth between the thread test ring and the front end face of the roller cutter. The displacement sensor feedbacks data. If the distance difference between the two planes is within the standard value, it means that the thread processing accuracy is qualified. Otherwise, it is unqualified, and the roller cutter test is completed. The thread turning tool and thread test ring are assembled on the fixture. The same drive system of the CNC machine tool is used to drive the hob drill to rotate through the three-jaw chuck, so that thread processing and thread testing can be carried out successively. The integrated function of thread processing and thread testing is realized efficiently and conveniently, and the accuracy and safety of the test are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0018] In the attached figure: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a three-dimensional schematic diagram of a roller cutter drill bit of the present invention; Figure 3 It is a schematic three-dimensional diagram of the tooling assembly of the present invention; Figure 4 It is a partial cross-sectional schematic diagram of the fixed cylinder seat of the present invention; Figure 5 is a three-dimensional schematic diagram of the displacement sensor of the present invention; Figure 6 It is an exploded perspective schematic diagram of the fixed cartridge seat of the present invention; Figure 7is a schematic cross-sectional view of the tooling assembly of the present invention; Figure 8 yes Figure 7 A local enlarged schematic diagram of area A; Figure 9 It is a three-dimensional schematic diagram of the sliding seat of the present invention; Figure 10 is a three-dimensional schematic diagram of an extended arc plate of the present invention; In the figure: 1, tooling assembly; 101, tooling seat; 102, adapting circular groove; 103, bearing plate 1; 104, bearing plate 2; 105, sliding seat; 106, limiting cavity; 107, extension arc plate; 108, guide rod; 109, sliding base; 2. Thread test ring; 3. Displacement sensor; 301. Limit block; 302. Ball; 4. Fixed cylinder seat; 401. Snap-on plate; 402. Center seat; 403. Center axis; 404. Square top block; 405. Roller; 406. Center block; 407. Top plate; 408. Guide rod; 409. Guide hole; 5. Three-jaw chuck; 6. Roller cutter bit; 7. Thread turning tool. DETAILED DESCRIPTION

[0019] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0020] See also Figure 1-10 The present invention provides a technical solution: a testing device for manufacturing drilling cutters, comprising a numerically controlled machine tool, The CNC machine tool includes a tooling assembly 1 and a three-jaw chuck 5; The three-jaw chuck 5 is used to clamp the roller cutter bit 6 and rotate it; The tool assembly 1 includes a tool seat 101, and a thread turning tool 7 is provided on the end surface of the tool seat 101. The thread turning tool 7 is used to turn the internal thread at the front end connection of the hob drill bit 6; A thread test ring 2 is fixedly sleeved on the outer side of the tooling seat 101, and the thread test ring 2 is adapted to the threaded connection of the roller cutter drill bit 6; The tooling assembly 1 also includes a linear reciprocating mechanism and a displacement sensor 3. The test push rod of the displacement sensor 3 maintains contact with one end face of the threaded test ring 2. The linear reciprocating mechanism is used to drive the displacement sensor 3 to move back and forth between the threaded test ring 2 and the end face of the roller drill bit 6.

[0021] First, the staff installs the hob drill bit 6 into the CNC machine tool. Specifically, it is fixed by the three-jaw chuck 5. Then the CNC machine tool is started. The XYZ axis linear displacement system of the CNC machine tool drives the thread turning tool 7 on the end face of the tool holder 101 to extend into the inner side of the front end of the hob drill bit 6. With the rotation of the three-jaw chuck 5 and the feeding of the thread turning tool 7, the processing of the connecting thread is completed (internal thread processing by CNC machine tools is a common existing technology in this field, so it will not be described in detail here); When the processing is completed, the thread accuracy test can be carried out. Specifically, when the thread processing is completed, the waste chips at the processing site are first cleaned manually with an air gun to avoid affecting the subsequent test accuracy. Then, the thread test ring 2 is driven by the tooling seat 101 to move to the threaded position corresponding to the roller drill bit 6. Then, the tooling seat 101 restricts the thread test ring 2 from rotating. Similarly, the roller drill bit 6 is driven to rotate relative to the thread test ring 2 by the three-jaw chuck 5, so that the thread test ring 2 can be screwed into the roller drill bit 6 along its thread lines. Then, it is necessary to detect the thread processing depth and the thread coaxiality to avoid the bearing system from being unable to be installed in place or being installed away from the center axis of the roller drill bit 6. Specifically, in the initial state, the test push rod of the displacement sensor 3 always keeps in contact with one end face of the thread test ring 2 (such as Figure 4 As shown in FIG), after the thread test ring 2 completes the screw-in test, the displacement sensor 3 is driven by the linear reciprocating mechanism to perform a reciprocating motion, so that the test push rod moves back and forth between the thread test ring 2 and the front end surface of the roller cutter 6. The displacement sensor 3 provides feedback. If the distance difference between the two planes is within the standard value, it indicates that the thread processing accuracy is qualified. Otherwise, it is unqualified, and the test of the roller cutter 6 is completed. The thread turning tool 7 and the thread testing ring 2 are assembled on the tooling seat 101. The same drive system of the CNC machine tool is used to drive the hob drill 6 to rotate through the three-jaw chuck 5, so that the thread processing and thread testing work can be carried out successively, and the integrated function of thread processing and thread testing can be realized efficiently and conveniently, thereby improving the accuracy and safety of the test.

[0022] A fixed cylinder seat 4 is provided on the middle side of the tooling assembly 1, one end of the fixed cylinder seat 4 is connected to the tooling seat 101, and a transverse groove for accommodating the displacement sensor 3 is provided at the upper end of the fixed cylinder seat 4. A pair of limit blocks 301 are fixedly connected at both ends of the transverse groove, and a limit transverse hole is provided on the inner side of the limit block 301. Ring sleeves are provided at both ends of the outer shell of the displacement sensor 3, and the ring sleeves are adapted to the limit transverse holes.

[0023] Preferably, a pair of limit blocks 301 are used to limit the two ends of the displacement sensor 3 so that it can move up and down along the limit horizontal hole. The displacement range is the test distance between the end face of the threaded test ring 2 and the front end face of the roller drill bit 6.

[0024] The fixed cylinder seat 4 includes a pair of clamping plates 401 and a center seat 402. A center shaft 403 is rotatably connected between the pair of clamping plates 401. A pair of square top blocks 404 are fixedly connected to the middle side of the center shaft 403. The four corners of the square top blocks 404 are provided with round chamfers, and the middle side of the center seat 402 is provided with a cylindrical hole for accommodating the square top blocks 404.

[0025] Preferably, in order to improve the convenience of processing and assembly, the fixed cylinder seat 4 is set to be split, which is composed of a pair of clamping plates 401 and a center seat 402. The linear reciprocating mechanism includes a square top block 404. Specifically, when it is necessary to drive the displacement sensor 3 to move back and forth, the pair of square top blocks 404 are driven to rotate through the center axis 403. The four corners of the square top blocks 404 are all set to be chamfered. The displacement sensor 3 is continuously pushed up by the four corners and lowered and reset under the action of gravity, so that it can move back and forth for detection.

[0026] The upper end of the cylindrical hole is connected to the transverse groove, and the upper end of the square top block 404 is in contact with a roller 405. A center block 406 is rotatably connected between a pair of rollers 405. The upper end of the center block 406 is fixedly connected to a top plate 407. Both ends of the top plate 407 are fixedly connected to guide rods 408. A guide hole 409 is provided on the lower side of the transverse groove of the clamping disk 401. The guide hole 409 is adapted to the guide rod 408, and a tension spring is connected between the guide hole 409 and the guide rod 408.

[0027] Preferably, a top plate 407 is fixed to the lower end of the displacement sensor 3, and a tension spring is connected between a guide hole 409 and a guide rod 408, so that in the initial state, the displacement sensor 3 always generates a downward force, and the roller 405 always fits on the square top block 404. When the central axis 403 drives the square top block 404 to rotate, the roller 405 rolls in contact with it, thereby driving the roller 405 to drive the center block 406 and the top plate 407 to move back and forth up and down, so that the displacement sensor 3 can perform reciprocating detection. The roller 405 is provided to further reduce the friction generated when the square top block 404 is driven to rise and fall.

[0028] A ball 302 is provided at the head end of the test push rod of the displacement sensor 3 .

[0029] Preferably, a ball 302 is provided at the head end of the test push rod of the displacement sensor 3, so that the ball 302 rolls back and forth between the end face of the threaded test ring 2 and the front end face of the roller drill bit 6, thereby greatly reducing the wear of the test push rod and improving its service life.

[0030] One end of the fixed cylinder seat 4 is rotatably connected to the tooling seat 101, and an adapting circular groove 102 is provided on the inner side of the clamping disk 401. One end of the tooling seat 101 is fixedly connected to a bearing disk 103, and a roller is provided in a ring shape on the outer side of the bearing disk 103. The bearing disk 103 is adapted to the adapting circular groove 102. One end of the central axis 403 passes through the bearing disk 103 and is fixedly connected to the tooling seat 101.

[0031] Preferably, a bearing disc 103 is provided so that the fixed cylinder seat 4 itself remains stationary, while the tool seat 101 can rotate relative to the fixed cylinder seat 4, and the tool seat 101 is connected to the central shaft 403. Specifically, when testing, the tool seat 101 first restricts the thread test ring 2 from rotating, so that the thread test ring 2 is tightened in the roller drill bit 6 to complete the screw-in test. Then, when the subsequent displacement sensor 3 detection is required, the three-jaw chuck 5 continues to drive the roller drill bit 6 to rotate, thereby synchronously driving the tightened thread test ring 2 to rotate, so that the tool seat 101 rotates relative to the fixed cylinder seat 4, and the tool seat 101 also drives the central shaft 403 to rotate, thereby driving The dynamic displacement sensor 3 performs a linear reciprocating motion. At this time, the roller drill bit 6 and the thread test ring 2 are in a rotating state, and the displacement sensor 3 is always at the upper end of the fixed cylinder seat 4 and performs an up and down reciprocating motion. Moreover, when the square top block 404 rotates one circle, the displacement sensor 3 moves up and down four times. Therefore, when the roller drill bit 6 and the thread test ring 2 rotate one circle, the square top block 404 is driven to rotate one circle, so that the displacement sensor 3 detects the four sides of the end face of the roller drill bit 6 once. The detection effect is more comprehensive, and there is no need to add an additional drive component inside the CNC machine tool to drive the displacement sensor 3 to perform a linear reciprocating motion, which reduces the difficulty and cost of the overall structural design.

[0032] Similarly, a bearing disc 2 104 is provided on one side of the other side clamping disc 401, and one end of the bearing disc 2 104 is fixedly connected to a sliding seat 105. Limiting grooves are provided on the four sides of the sliding seat 105. One end of the sliding seat 105 slides to fit the limiting cavity 106, and the inner side of the limiting cavity 106 is adapted to the sliding seat 105. The other end of the central axis 403 passes through the bearing disc 2 104 and is fixedly connected to the sliding seat 105.

[0033] Preferably, when it is necessary to limit the rotation of the workpiece 101, a sliding seat 105 and a limiting cavity 106 are provided, and the two slide and engage with each other. Specifically, in the initial state, the sliding seat 105 is completely stuck in the limiting cavity 106, thereby limiting the sliding seat 105, and the sliding seat 105 is fixedly connected to the center shaft 403, thereby limiting the workpiece 101, so that the thread test ring 2 remains stationary until the screw-in test is completed. Then, when the displacement sensor 3 needs to be detected, at this time, since the thread test ring 2 and the hob drill bit 6 are tightened with each other, the workpiece 101, the fixed cylinder seat 4 and the sliding seat 105 all stay in place and move away from the three-jaw chuck 5 through the limiting cavity 106 until the limiting cavity 106 is completely separated from the sliding seat 105, the restriction of the sliding seat 105 can be released, and then the center shaft 403 can be driven by the three-jaw chuck 5 to rotate, so that the displacement sensor 3 can be detected.

[0034] The lower end of the limiting cavity 106 is fixedly connected to an extension arc plate 107, and a guide rail recess is provided on the inner side of the extension arc plate 107. The upper side of the extension arc plate 107 slides with the fixed cylinder seat 4, and a guide rail protrusion is provided on the lower side of the fixed cylinder seat 4. The guide rail protrusion is adapted to the guide rail concave. One end of the fixed cylinder seat 4 is fixedly connected to a guide rod 108, and a guide groove is provided at one end of the limiting cavity 106, and the guide rod 108 slides with the guide groove.

[0035] The lower ends of the extended arc plate 107 and the limiting cavity 106 are fixedly connected to an X-axis sliding base 109 .

[0036] Preferably, in order to improve the stability of the relative displacement between the limiting cavity 106 and the fixed cylinder seat 4, and to prevent the fixed cylinder seat 4 from rotating itself, an extended arc plate 107 is provided. A guide rail protrusion and a guide rail concave are respectively provided at the lower end of the fixed cylinder seat 4 and in the extended arc plate 107, so that the two guide and slide with each other, thereby improving the stability of the relative displacement between the two and the support stability of the fixed cylinder seat 4; The limit cavity 106 and the extension arc plate 107 are driven to move by the XYZ linear displacement system inside the CNC machine tool. Specifically, an X-axis sliding base 109 is fixedly connected to the lower end of the extension arc plate 107 and the limit cavity 106. The X-axis sliding base 109 can drive the entire tooling assembly 1 to move in the X-axis direction, so that the thread turning tool 7 can feed in the X-axis direction when machining the thread and when the thread test ring 2 is screwed in. When the displacement sensor 3 is detected, the X-axis sliding base 109 can move in the opposite direction to stabilize the sliding seat 105 and the limit cavity 106. Separate and release the restriction on the tooling seat 101. Then, when the tooling seat 101 rotates one circle and the detection is completed, the X-axis sliding base 109 can be reset, so that the sliding base 105 and the limit cavity 106 are re-engaged for limiting. Then the three-jaw chuck 5 can be rotated in the opposite direction, thereby loosening the thread test ring 2, and the hob drill bit 6 can be removed to complete the processing and testing work. In other words, only the linear displacement system in the CNC machine tool is used to realize the thread processing and testing functions of the hob drill bit 6, without the need for additional drive components for driving, thereby reducing design and manufacturing costs.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or interconnected connections; they can refer to direct connections, internal connectivity between two components, or an interaction between two components. A person of ordinary skill in the art will be able to understand the meaning of the above terms in this application based on the specific circumstances.

[0038] The above is a detailed introduction to a testing device for manufacturing drilling cutters provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A testing device for manufacturing drilling cutters, comprising a numerically controlled machine tool, characterized in that: The CNC machine tool includes a tooling assembly (1) and a three-jaw chuck (5); The three-jaw chuck (5) is used to clamp the roller cutter bit (6) and rotate it; The tool assembly (1) includes a tool seat (101), and a thread turning tool (7) is provided on the end surface of the tool seat (101). The thread turning tool (7) is used to turn an internal thread at the front end connection of the hob drill bit (6); A threaded test ring (2) is fixedly sleeved on the outer side of the tooling seat (101), and the threaded test ring (2) is adapted to the threaded connection of the roller cutter drill bit (6); The tooling assembly (1) further includes a linear reciprocating mechanism and a displacement sensor (3), wherein a test push rod of the displacement sensor (3) maintains contact with an end face of the threaded test ring (2), and the linear reciprocating mechanism is used to drive the displacement sensor (3) to move back and forth between the threaded test ring (2) and the end face of the roller drill bit (6).

2. A testing device for manufacturing drilling cutters according to claim 1, characterized in that: A fixed cylinder seat (4) is provided on the middle side of the tooling assembly (1), one end of the fixed cylinder seat (4) is connected to the tooling seat (101), and a transverse groove for accommodating the displacement sensor (3) is provided on the upper end of the fixed cylinder seat (4), a pair of limit blocks (301) are fixedly connected to the two ends of the transverse groove, and a limit transverse hole is provided on the inner side of the limit block (301), and ring sleeves are provided at both ends of the housing of the displacement sensor (3), and the ring sleeves are adapted to the limit transverse holes.

3. A testing device for manufacturing drilling cutters according to claim 2, characterized in that: The fixed cylinder seat (4) comprises a pair of clamping discs (401) and a center seat (402). A center shaft (403) is rotatably connected between the pair of clamping discs (401). A pair of square top blocks (404) are fixedly connected to the middle side of the center shaft (403). The four corners of the square top blocks (404) are provided with round chamfers. The center seat (402) is provided with a cylindrical hole in the middle side for accommodating the square top blocks (404).

4. A testing device for manufacturing drilling cutters according to claim 3, characterized in that: The upper end of the cylindrical hole is connected to the transverse groove, the upper end of the square top block (404) is contacted with a roller (405), a center block (406) is rotatably connected between the pair of rollers (405), the upper end of the center block (406) is fixedly connected to a top plate (407), and the two ends of the top plate (407) are fixedly connected to guide rods (408), a guide hole (409) is opened on the lower side of the transverse groove of the clamping plate (401), the guide hole (409) is adapted to the guide rod (408), and a tension spring is connected between the guide hole (409) and the guide rod (408).

5. The testing device for manufacturing drilling cutters according to claim 1, characterized in that: A ball (302) is provided at the head end of the test push rod of the displacement sensor (3).

6. The testing device for manufacturing drilling roller cutters according to claim 3, characterized in that: One end of the fixed cylinder seat (4) is rotatably connected to the tooling seat (101), an adapting circular groove (102) is provided on the inner side of the clamping disc (401), one end of the tooling seat (101) is fixedly connected to a bearing disc 1 (103), a roller is provided in an annular shape on the outer side of the bearing disc 1 (103), the bearing disc 1 (103) is adapted to the adapting circular groove (102), and one end of the central shaft (403) passes through the bearing disc 1 (103) and is fixedly connected to the tooling seat (101).

7. A testing device for manufacturing drilling cutters according to claim 6, characterized in that: Similarly, a bearing disc 2 (104) is provided on one side of the other side of the clamping disc (401), and one end of the bearing disc 2 (104) is fixedly connected to a sliding seat (105), and limiting grooves are provided on four sides of the sliding seat (105). One end of the sliding seat (105) slides with the limiting cavity (106), and the inner side of the limiting cavity (106) is adapted to the sliding seat (105). The other end of the central axis (403) passes through the bearing disc 2 (104) and is fixedly connected to the sliding seat (105).

8. The testing device for manufacturing drilling roller cutters according to claim 7, characterized in that: The lower end of the limiting cavity (106) is fixedly connected to an extension arc plate (107), the inner side of the extension arc plate (107) is provided with a guide rail concave part, the upper side of the extension arc plate (107) is slidably matched with the fixed cylinder seat (4), the lower side of the fixed cylinder seat (4) is provided with a guide rail protrusion, the guide rail protrusion is adapted to the guide rail concave part, one end of the fixed cylinder seat (4) is fixedly connected to a guide rod (108), one end of the limiting cavity (106) is provided with a guide groove, and the guide rod (108) is slidably matched with the guide groove.

9. The testing device for manufacturing drilling cutters according to claim 8, characterized in that: The lower ends of the extended arc plate (107) and the limiting cavity (106) are fixedly connected to an X-axis sliding base (109).

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