Automatic feeding drilling multi-parameter active loading and testing platform

Abstract

The present application belongs to the technical field of spindle performance testing, and discloses an automatic feed drill multi-parameter active loading and testing platform. The platform comprises an automatic feed drill, a drill template, a platform base, a torque loading testing module, a grating ruler mounting plate, a grating ruler, a linear guide rail and an axial force loading testing module. The torque loading testing module is arranged offset from the brake, thereby reducing the inertia of the moving parts dragged by the spindle of the hole making equipment, and significantly improving the dynamic response capability and frequency response characteristics of the system. The axial force loading testing module separates the transmission paths of the torque and the axial force through the design of the angular contact bearing shaft system, thereby realizing the physical isolation of the axial force and the torque load, and ensuring that the two do not interfere with each other. Meanwhile, the axial force and the torque composite load are applied to the measured equipment, thereby realizing the dynamic testing of key parameters such as the rotating speed and the feed speed, and being suitable for the performance detection and the life testing of the automatic feed drill, and being capable of providing guidance for the equipment design and the control algorithm optimization of the portable hole making equipment.

Description

Technical Field

[0001] This invention belongs to the field of spindle performance testing technology, and relates to an automatic feed drilling multi-parameter active loading and testing platform. Background Technology

[0002] Portable automatic drilling equipment is commonly used in the assembly site of aerospace equipment manufacturing. With its advantage of being able to replace manual labor and achieve automatic feeding, it is widely used in the integrated drilling of difficult-to-machine materials such as composites, titanium alloys, aluminum alloys, aluminum composites, and titanium composites. The performance testing technology of portable automatic drilling equipment is a fundamental and necessary task to improve the overall performance of processing equipment. Its processing performance is related to the reliability of aircraft service and the production cost and efficiency of aircraft.

[0003] Modern machining equipment is evolving from traditional machinery to mechatronic systems, with automation encompassing elements such as CNC units, servo drives, mechanical structures, machining processes, and position and condition feedback. To improve the performance of portable automated drilling equipment, both the response of the mechanical structure and the dynamic behavior of the control and drive systems must be considered. Machine tool testing technology can characterize the actual performance of machining equipment, guiding the design of its mechanical structure and servo system algorithms, thereby improving the machining capabilities of the equipment. Traditional testing methods involve direct machining tests on the workpiece, making it difficult to accurately and quantitatively control cutting loads. These methods are cumbersome and consume significant amounts of materials, tools, and time. Therefore, simulating the stress characteristics of drilling equipment under multiple working conditions through a testing platform, actively applying infinitely adjustable loads to the spindle, simulating cutting loads under drilling, reaming, and boring conditions, and simultaneously monitoring dynamic parameters such as spindle axial feed force, axial feed speed, rotational torque, and rotational speed are key factors in improving the performance of automated feed drilling. Existing testing devices are limited in function and have limited load simulation and data acquisition methods, making them insufficient for experimental testing needs. Therefore, it is necessary to consider the actual application scenarios of portable automatic hole-making equipment and simulate its real load characteristics.

[0004] Automated drilling equipment has been used in the aerospace manufacturing field for some time, and there is already relatively complete research on partial load simulation devices for various loads. Currently, companies such as MITIS in France have mature solutions that use cylinders to simulate shaft cutting forces and electromagnetic brakes to simulate torque cutting forces. These solutions can apply multi-dimensional cutting force loads and monitor the dynamic performance of the machining equipment, thereby effectively simulating actual working conditions. However, this solution requires two control consoles to achieve the function, making it expensive. Research on partial load condition simulation devices for various loads in China started relatively late. Chen Fei, Zhang Heng, and others from Jilin University invented the "Electric Spindle Reliability Test Bench and Reliability Test Method" (patent number CN201610082282.3). The device includes no-load test methods and loading test methods. Through the coordinated cooperation of adjustable clamping mechanisms and modular components, it applies cutting forces to the electric spindle using a resultant force loading method. This can simulate the dynamic and static cutting forces and cutting torques experienced by the electric spindle under actual working conditions, which helps improve the compatibility and operational efficiency of the test and can effectively carry out reliability tests. However, the device uses a series loading torque method between the front end of the spindle tool holder and the dynamometer, which changes the force distribution during tool processing. At the same time, due to the structural design of the annular groove, the loading angle can only simulate a set series of arithmetic angles, and the loading test can only be carried out under the selected loading angle. It cannot accurately load radial and axial cutting forces during the feed process. Gao Weiguo et al. from Tianjin University invented a "Machine Tool Spindle Thermal Error Test Device under Simulated Working Condition Load Conditions" (patent number CN101972948B). This device simulates torque and radial force loads using a magnetic powder brake and a tension / compression gauge, and applies the simulated load to the spindle via a guide rod and a test bar. It can simulate the spindle's thermal characteristics and thermal error model, providing a practical test device for machine tool spindle accuracy prediction and design. However, this device cannot apply axial force during spindle feed and is not suitable for typical working conditions of titanium-coated laminates in the aerospace manufacturing field. It also lacks a multi-directional load simulation design based on actual machining load characteristics. Chen Weizheng et al. from Jilin University invented a "Portable Spindle Full-Condition Loading and Performance Testing Device" (patent number CN109406125B). This device uses an electro-hydraulic servo loader or an electromagnetic vibrator to simulate dynamic cutting forces and an electric dynamometer to simulate torque. It integrates spindle performance testing components with a standardized tool holder to apply loads, achieving simulation of the actual load on the machine tool spindle during machining and collecting performance testing data. However, the device cannot achieve simultaneous online acquisition of multiple physical quantities, the axial force loading is static, and its spindle is fixed, making it impossible to achieve feed action and difficult to perform precise load control, which significantly restricts the online testing and data analysis of the spindle.

[0005] In summary, to meet the reliability testing requirements of hole-making equipment in the aerospace equipment manufacturing field, it is necessary to develop a multi-parameter active loading and testing platform. Summary of the Invention

[0006] This invention addresses the active loading testing requirements of portable automatic drilling equipment by developing a multi-parameter active loading and testing platform for automatic feed drilling. The device features a linear guide rail 7 slide and ball splines, enabling testing during the drilling equipment's feed process. A hysteresis brake 408, mounted on the platform base 3, does not move with the linear guide rail 7 slide. Torque load is transmitted via a double diaphragm coupling 407, ball splines 402, and a synchronous belt 404, minimizing the inertia of the moving part dragged by the drilling equipment's spindle during testing. Axial force load is transmitted via a cylinder 801, tension / compression sensors 804, and the slide base 807, guided by the linear guide rail 7, minimizing axial loading resistance. Axial force and torque are isolated by rotating shaft systems at both ends of the slide base 807, preventing interference between the two loads and enabling combined loading and testing of axial force and torque during the drilling process.

[0007] The technical solution of this invention:

[0008] An automatic feed drilling multi-parameter active loading and testing platform includes an automatic feed drill 1, a drill template 2, a platform base 3, a torque loading test module 4, a grating ruler mounting plate 5, a grating ruler 6, a linear guide rail 7, and an axial force loading test module 8; the drill template 2, the grating ruler 6, and the axial force loading test module 8 are fixedly mounted on the platform base 3; the automatic feed drill 1 is connected to the drill template 2; the torque loading test module 4 is mounted on the platform base 3 via the linear guide rail 7; the grating ruler mounting plate 5 is fastened to the grating ruler 6;

[0009] The automatic feed drill 1 includes a test bar 101, a drill sleeve 102, a spindle 103, and a drill body 104. The drill body 104 is fastened to the drill sleeve 102. The drill sleeve 102 is positioned by engaging with a hole on the surface of the drill template 2 through its front cylindrical surface. The drill sleeve 102 is screwed to the surface of the drill template 2 through a wedge-shaped surface and a fan-shaped groove in its middle section, thereby fixing the automatic feed drill 1 on the test platform. The spindle 103 is installed inside the automatic feed drill 1 and is positioned by a conical surface to ensure coaxiality. It is fastened to the test bar 101 by threads or a chuck. The front end of the test bar 101 is inserted into a tension sleeve 409. By tightening the fastening screws of the tension sleeve 409, the test bar 101 is fastened to the spindle 411 of the slide table shaft system.

[0010] The torque loading test module 4 includes a T-type bearing housing A401, a ball spline 402, a brake-side synchronous pulley 403, a synchronous belt 404, a spline nut support 405, a T-type bearing housing B406, a double diaphragm 407, a hysteresis brake 408, a tensioning sleeve 409, an angular contact bearing A410, a slide table shaft system spindle 411, an angular contact bearing B412, a corrugated spring 413, a shaft system preload nut 414, a coupling A415, a torque sensor 416, and a coupling B41. 7. T-type bearing housing C418, sensor-side synchronous pulley 419, left sleeve of synchronous belt pulley shaft 420, synchronous pulley shaft 421, and rolling bearing 422; ball spline 402 is fixed to T-type bearing housing B406 via T-type bearing housing A401, and the right end of ball spline 402 is connected to hysteresis brake 408 via double diaphragm 407; the synchronous belt 404 enables transmission between the brake-side synchronous pulley 403 installed between the shaft segments of ball spline 402 and the synchronous pulley shaft 421. Synchronous transmission of the sensor-side synchronous pulley 419; the spline nut support 405 is installed on the right side of the brake-side synchronous pulley 403 and is fastened to the slide base 807 to ensure that the brake-side synchronous pulley 403 moves together with the sensor-side synchronous pulley 419; the left sleeve 420 of the synchronous belt pulley shaft is installed between the sensor-side synchronous pulley 419 and the synchronous pulley shaft 421, one end of the synchronous pulley shaft 421 is installed on the slide synchronous pulley support 806 through the rolling bearing 422, and the other end is installed on the T-type bearing seat. On C418, and connected to one end of torque sensor 416 via coupling B417; the main shaft 411 of the slide table shaft system is connected to the other end of torque sensor 416 via coupling A415, and is mounted on slide table shaft system support 809 via angular contact bearing A410 and angular contact bearing B412; the corrugated spring 413 and shaft system preload nut 414 are sequentially installed on the left end of slide table shaft system main shaft 411, and the tensioning sleeve 409 is installed on the right end of slide table shaft system main shaft 411 and connected to test bar 101;

[0011] The axial force loading test module 8 includes a cylinder 801, a cylinder mounting base 802, a cylinder connector 803, a tension / compression sensor 804, a synchronous pulley shaft end cover 805, a slide table synchronous pulley support 806, a slide table base 807, a slide table cover plate 808, and a slide table shaft support 809. The cylinder mounting base 802 is arranged on the platform base 3. The cylinder 801 is fastened to the cylinder mounting base 802 and connected to the tension / compression sensor 804 through the cylinder connector 803. The slide table synchronous pulley support 806, the slide table base 807, the slide table cover plate 808, and the slide table shaft support 809 are fastened to form a box structure, which is installed on the linear guide rail 7. One end of the box structure is connected to the tension / compression sensor 804 through the synchronous pulley shaft end cover 805, and the other end is connected to the tension sleeve 409 through the slide table shaft main shaft 411.

[0012] The grating ruler 6 is arranged on the platform base 3. The grating ruler 6 is mounted on the grating ruler mounting plate 5 through a sliding block. The grating ruler mounting plate 5 is fastened to the slide base 807 to collect feed speed information.

[0013] The workflow is as follows:

[0014] The hysteresis brake 408 applies torque, transmitting it to the synchronous pulley shaft 421 via the double diaphragm 407, ball spline 402, brake-side synchronous pulley 403, synchronous belt 404, and sensor-side synchronous pulley 419. The torque sensor 416 is connected at both ends to the synchronous pulley shaft 421 and the slide table shaft system main shaft 411, respectively, acquiring torque information and transmitting it to the slide table shaft system main shaft 411. Finally, the torque is transmitted to the test rod 101 via the tensioning sleeve 409. The cylinder 801 applies axial force, via the cylinder connector 803 and cylinder connector 8... 03. The tension / compression sensor 804 and the synchronous pulley shaft end cover 805 transmit the axial force to the box structure composed of the slide synchronous pulley support 806, slide base 807, slide cover plate 808 and slide shaft support 809. Then, the axial force is transmitted to the test rod 101 through the slide shaft main shaft 411 and the tension sleeve 409. When the cylinder 801 applies the axial force, the tension / compression sensor 804 collects the axial force information. The slide base 807 moves above the linear guide rail 7 under the force, which drives the sliding block of the grating ruler 6 to move, so that the grating ruler 6 collects the feed speed information.

[0015] The beneficial effects of this invention are as follows: This invention provides an automatic feed drilling multi-parameter active loading and testing platform. A torque brake is mounted on the platform base, and torque load is transmitted via a double diaphragm coupling, ball splines, and a synchronous belt. This layout effectively reduces the inertia of moving parts dragged by the drilling equipment spindle, significantly improving the system's dynamic response capability and frequency response characteristics, thus enabling more accurate simulation of high-speed, high-dynamic drilling conditions. Axial force load is transmitted through cylinders, tension / compression sensors, and a slide base, guided by linear guides, effectively reducing axial loading resistance. The physical isolation of axial force and torque load is achieved through the rotating shaft system located at both ends of the slide base, ensuring that the two do not interfere with each other. Based on this, torque and axial force loading curves can be independently set according to actual working conditions, actively applying simulated loads to the tested equipment to achieve dynamic testing of key parameters such as rotational speed and feed rate. This is suitable for performance testing and life testing of automatic feed drilling equipment and can provide guidance for the equipment design and control algorithm optimization of portable drilling equipment. Attached Figure Description

[0016] Figure 1 A view of the multi-parameter active loading and testing platform;

[0017] Figure 2 A partial cross-sectional view of the multi-parameter active loading and testing platform;

[0018] Figure 3 This is a structural diagram of the automatic feed drill part;

[0019] Figure 4 An exploded view of the torque loading test module.

[0020] Figure 5 An exploded view of the axial force loading test module.

[0021] Figure 6 A 3D diagram of a multi-parameter active loading and testing platform;

[0022] In the diagram: 1 Automatic feed drill, 101 Test bar, 102 Drill bushing, 103 Spindle, 104 Drill body, 2 Drill template, 3 Platform base, 4 Torque loading test module, 401 T-type bearing housing A, 402 Ball spline, 403 Brake side synchronous pulley, 404 Synchronous belt, 405 Spline nut support, 406 T-type bearing housing B, 407 Double diaphragm, 408 Hysteresis brake, 409 Tensioner sleeve, 410 Angular contact bearing A, 411 Slide table shaft system spindle, 412 Angular contact bearing B, 413 Corrugated spring, 414 Shaft preload nut, 41 5. Coupling A; 416. Torque Sensor; 417. Coupling B; 418. T-type Bearing Housing C; 419. Sensor Side Synchronous Pulley; 420. Synchronous Belt Pulley Shaft Left Sleeve; 421. Synchronous Pulley Shaft; 422. Rolling Bearing; 5. Grating Ruler Mounting Plate; 6. Grating Ruler; 7. Linear Guide Rail; 8. Axial Force Loading Test Module; 801. Cylinder; 802. Cylinder Mounting Base; 803. Cylinder Connector; 804. Tension / Compression Sensor; 805. Synchronous Pulley Shaft End Cover; 806. Slide Table Synchronous Pulley Support; 807. Slide Table Base; 808. Slide Table Cover Plate; 809. Slide Table Shaft Support. Detailed Implementation

[0023] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and technical solutions.

[0024] refer to Figures 1-3 as well as Figure 6 An automatic feed drilling multi-parameter active loading and testing platform includes an automatic feed drill 1, a drill template 2, a platform base 3, a torque loading test module 4, a grating ruler mounting plate 5, a grating ruler 6, a linear guide rail 7, and an axial force loading test module 8.

[0025] The automatic feed drill 1 includes a test bar 101, a drill sleeve 102, a spindle 103, and a drill body 104. The drill body 104 is fastened to the drill sleeve 102. The drill sleeve 102 is positioned by engaging with a hole on the surface of the drill template 2 through its front cylindrical surface. The drill sleeve 102 is screwed to the surface of the drill template 2 through a wedge-shaped surface and a fan-shaped groove in its middle section, thereby fixing the automatic feed drill 1 on the test platform. The spindle 103 is installed inside the automatic feed drill 1 and is positioned by a conical surface to ensure coaxiality. It is fastened to the test bar 101 by threads or a chuck. The front end of the test bar 101 is inserted into a tension sleeve 409. By tightening the fastening screws of the tension sleeve 409, the test bar 101 is fastened to the spindle 411 of the slide table shaft system.

[0026] like Figure 4 As shown, the torque loading test module 4 includes a T-type bearing housing A401, a ball spline 402, a brake-side synchronous pulley 403, a synchronous belt 404, a spline nut support 405, a T-type bearing housing B406, a double diaphragm 407, a hysteresis brake 408, a tensioning sleeve 409, an angular contact bearing A410, a slide table shaft system spindle 411, an angular contact bearing B412, a corrugated spring 413, a shaft system preload nut 414, a coupling A415, a torque sensor 416, and a coupling B415. 417, T-type bearing housing C418, sensor-side synchronous pulley 419, left sleeve of synchronous belt pulley shaft 420, synchronous pulley shaft 421, and rolling bearing 422; ball spline 402 is fixed to T-type bearing housing A401 and T-type bearing housing B406 respectively, and the right end of ball spline 402 is connected to hysteresis brake 408 through double diaphragm 407; synchronous belt 404 connects the brake-side synchronous pulley 403 installed between the shaft segments of ball spline 402 and the synchronous pulley shaft 421. Synchronous transmission of the sensor-side synchronous pulley 419; the spline nut support 405 is installed on the right side of the brake-side synchronous pulley 403 and is fastened to the slide base 807 to ensure that the brake-side synchronous pulley 403 moves together with the sensor-side synchronous pulley 419; the left sleeve 420 of the synchronous belt pulley shaft is installed between the sensor-side synchronous pulley 419 and the synchronous pulley shaft 421, one end of the synchronous pulley shaft 421 is installed on the slide synchronous pulley support 806 through the rolling bearing 422, and the other end is installed on the T-type bearing seat. On C418, and connected to one end of torque sensor 416 via coupling B417; the main shaft 411 of the slide table shaft system is connected to the other end of torque sensor 416 via coupling A415, and is mounted on slide table shaft system support 809 via angular contact bearing A410 and angular contact bearing B412; the corrugated spring 413 and shaft system preload nut 414 are sequentially installed on the left end of slide table shaft system main shaft 411, and the tensioning sleeve 409 is installed on the right end of slide table shaft system main shaft 411 and connected to test bar 101;

[0027] like Figure 5As shown, the axial force loading test module 8 includes a cylinder 801, a cylinder mounting base 802, a cylinder connector 803, a tension / compression sensor 804, a synchronous pulley shaft end cover 805, a slide table synchronous pulley support 806, a slide table base 807, a slide table cover plate 808, and a slide table shaft support 809. The cylinder mounting base 802 is arranged on the platform base 3. The cylinder 801 is fastened to the cylinder mounting base 802 and connected to the tension / compression sensor 804 through the cylinder connector 803. The slide table synchronous pulley support 806, the slide table base 807, the slide table cover plate 808, and the slide table shaft support 809 are fastened to form a box structure, which is installed on the linear guide rail 7. One end of the box structure is connected to the tension / compression sensor 804 through the synchronous pulley shaft end cover 805, and the other end is connected to the tension sleeve 409 through the slide table shaft main shaft 411.

[0028] In this embodiment, the ball spline 402 is fixed to the T-type bearing seat B406 via T-type bearing seat A401, and one end is connected to the hysteresis brake 408 via a double diaphragm 407. The brake-side synchronous pulley 403 is installed between the shaft segments of the ball spline 402, and forms synchronous transmission through the synchronous belt 404, the sensor-side synchronous pulley 419, and the synchronous pulley shaft 421. The spline nut support seat 405 is installed on the right side of the brake-side synchronous pulley 403 and is fastened to the slide base 807 with bolts to ensure that the brake-side synchronous pulley 403 moves together with the sensor-side synchronous pulley 419. The left sleeve 420 of the synchronous belt pulley shaft is installed between the sensor-side synchronous pulley 419 and the synchronous pulley shaft. Between 421, one end of the synchronous pulley shaft 421 is mounted on the slide table synchronous pulley support seat 806 via rolling bearing 422, and the other end is mounted on T-type bearing seat C418. It is connected to torque sensor 416 via coupling B417. At the same time, the slide table shaft system main shaft 411 is connected to the other end of torque sensor 416 via coupling A415, and is mounted on slide table shaft system support seat 809 via angular contact bearing A410 and angular contact bearing B412. Corrugated spring 413 and shaft system preload nut 414 are sequentially mounted on the left end of slide table shaft system main shaft 411, and tension sleeve 409 is mounted on the right end of slide table shaft system main shaft 411 and connected to test rod 101.

[0029] In this embodiment, the cylinder mounting seat 802 is arranged above the platform base 3. The cylinder 801 is fastened to the cylinder mounting seat 802 by bolts and connected to the tension and compression sensor 804 through the cylinder connector 803. The slide table synchronous pulley support seat 806, slide table base 807, slide table cover plate 808 and slide table shaft support seat 809 are fastened to form a box structure and installed above the linear guide rail 7. One end is connected to the tension and compression sensor 804 through the synchronous pulley shaft end cover 805, and the other end is connected to the test rod 101 through the slide table shaft main shaft 411 and the tension sleeve 409.

[0030] In this embodiment, the drill body 104 is connected to the drill sleeve 102 by bolts. The drill sleeve 102 and the drill template 2 are positioned by the front cylindrical surface engaging with the hole on the surface of the drill template 2. The middle section has a wedge-shaped surface and a fan-shaped groove that engage with the protrusion on the surface of the drill template 2 to simulate a machining scenario. The spindle 103 is positioned by a large taper surface to ensure coaxiality and is fastened to the test bar 101 by threads.

Claims

1. An automatic feed drilling multi-parameter active loading and testing platform, characterized in that, The automatic feed drilling multi-parameter active loading and testing platform includes an automatic feed drill (1), a drill template (2), a platform base (3), a torque loading test module (4), a grating ruler mounting plate (5), a grating ruler (6), a linear guide rail (7), and an axial force loading test module (8); the drill template (2), the grating ruler (6), and the axial force loading test module (8) are fixedly installed on the platform base (3); the automatic feed drill (1) is connected to the drill template (2); the torque loading test module (4) is installed on the platform base (3) through the linear guide rail (7); the grating ruler mounting plate (5) is fastened to the grating ruler (6); The torque loading test module (4) is characterized in that it includes a T-type bearing seat A (401), a ball spline (402), a brake-side synchronous pulley (403), a synchronous belt (404), a spline nut support seat (405), a T-type bearing seat B (406), a double diaphragm (407), a hysteresis brake (408), a tensioning sleeve (409), an angular contact bearing A (410), a slide table shaft system spindle (411), an angular contact bearing B (412), a corrugated spring (413), a shaft system preload nut (414), a coupling A (415), and a torque sensor (416). Coupling B (417), T-type bearing housing C (418), sensor-side synchronous pulley (419), left sleeve of synchronous belt pulley shaft (420), synchronous pulley shaft (421), and rolling bearing (422); ball spline (402) is fixed to T-type bearing housing B (406) via T-type bearing housing A (401), and the right end of ball spline (402) is connected to hysteresis brake (408) via double diaphragm (407); synchronous belt (404) connects the brake-side synchronous pulley (403) installed between the shaft segments of ball spline (402) and the synchronous pulley shaft (421). Synchronous transmission of the sensor-side synchronous pulley (419) on the slide; the spline nut support (405) is installed on the right side of the brake-side synchronous pulley (403) and is fastened to the slide base (807) to ensure that the brake-side synchronous pulley (403) moves together with the sensor-side synchronous pulley (419); the left sleeve (420) of the synchronous belt pulley shaft is installed between the sensor-side synchronous pulley (419) and the synchronous pulley shaft (421), one end of the synchronous pulley shaft (421) is installed on the slide synchronous pulley support (806) through the rolling bearing (422), and the other end is installed on the T-type bearing seat C (418). The slide table shaft system spindle (411) is connected to one end of the torque sensor (416) via coupling B (417); the slide table shaft system spindle (411) is connected to the other end of the torque sensor (416) via coupling A (415), and is mounted on the slide table shaft system support seat (809) via angular contact bearing A (410) and angular contact bearing B (412); the corrugated spring (413) and shaft system preload nut (414) are installed sequentially on the left end of the slide table shaft system spindle (411), and the tensioning sleeve (409) is installed on the right end of the slide table shaft system spindle (411) and connected to the test bar (101) of the automatic feed drill (1).

2. The automatic feed drilling multi-parameter active loading and testing platform according to claim 1, characterized in that, The automatic feed drill (1) includes a test bar (101), a drill sleeve (102), a spindle (103), and a drill body (104). The drill body (104) is fastened to the drill sleeve (102). The drill sleeve (102) is positioned by engaging with the hole on the surface of the drill template (2) through its cylindrical front end. The drill sleeve (102) is screwed to the surface of the drill template (2) through the wedge-shaped surface and fan-shaped groove in its middle section, thereby fixing the automatic feed drill (1) on the test platform. The spindle (103) is installed inside the automatic feed drill (1) and is positioned by a conical surface to ensure coaxiality. It is fastened to the test bar (101) through threads or a chuck. The front end of the test bar (101) is inserted into a tension sleeve (409). By tightening the fastening screw of the tension sleeve (409), the test bar (101) is fastened to the spindle (411) of the slide shaft system.

3. The automatic feed drilling multi-parameter active loading and testing platform according to claim 2, characterized in that, The axial force loading test module (8) includes a cylinder (801), a cylinder mounting base (802), a cylinder connector (803), a tension / compression sensor (804), a synchronous pulley shaft end cover (805), a slide synchronous pulley support (806), a slide base (807), a slide cover plate (808), and a slide shaft support (809); the cylinder mounting base (802) is arranged on the platform base (3); the cylinder (801) is fastened to the cylinder mounting base (802). The slide is connected to the tension and compression sensor (804) via the cylinder connector (803); the slide synchronous pulley support (806), slide base (807), slide cover plate (808) and slide shaft support (809) are fastened together to form a box structure, which is installed on the linear guide rail (7). One end of the box structure is connected to the tension and compression sensor (804) via the synchronous pulley shaft end cover (805), and the other end is connected to the tension sleeve (409) via the slide shaft main shaft (411).

4. The automatic feed drilling multi-parameter active loading and testing platform according to claim 3, characterized in that, The grating ruler (6) is mounted on the grating ruler mounting plate (5) via a sliding block. The grating ruler mounting plate (5) is fastened to the slide base (807) to collect feed speed information.

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