A double-screw synchronous drive linear motor test platform

Abstract

The present invention relates to the technical field of linear motor testing, and particularly relates to a double-screw synchronous drive type linear motor testing platform, which includes a test bench. A scheduling frame is arranged at the upper end of the test bench, and a touch display controller is arranged at the front end of the scheduling frame. A linear motor to be tested is arranged between the test bench and the scheduling frame. A connector is arranged below the scheduling frame. One end of a pull-pressure sensor is fixedly installed on the side of the connector, and the other end of the pull-pressure sensor is fixedly installed with a sliding plate. The testing platform further includes a multiple testing mechanism and a switching connection mechanism. The multiple testing mechanism further includes a magnetic drive testing component, a double-screw testing component, and a pneumatic testing component. Using the loading force provided by the magnetic drive testing component to test the linear motor to be tested can effectively reduce the influence of friction, but the thrust is not stable enough, and it is suitable for testing linear motors for transporting lighter goods.

Description

Technical Field

[0001] The present invention relates to the technical field of linear motor testing, and in particular to a dual-screw synchronously driven linear motor testing platform. Background Art

[0002] After design and production, linear motors require calibration and inspection, requiring a dedicated linear motor test platform to evaluate motor performance. This platform simulates the motor's operating conditions within a machine tool and evaluates motor performance by collecting performance parameters such as output speed and thrust. Manufacturers typically test positioning force, thrust fluctuation, thrust constant, and thrust linearity during this testing process. Verifying these parameters provides a comprehensive understanding of motor performance.

[0003] Amidst the wave of iterations in motor technology and diverse applications, linear motors have excelled in fields such as industrial automation and precision manufacturing thanks to their unique performance. These performance and testing requirements vary significantly across different application scenarios. Semiconductor manufacturing pursues extreme positioning accuracy and low noise, while logistics sorting prioritizes rapid response and high-load stability, resulting in vastly different testing requirements. Current linear motor testing platforms are generally monolithic, lacking flexibility in functional adaptation and testing methods, making it difficult to meet diverse testing needs. For example, single-screw motors, while their screw-nut combination is structurally mature, have significant shortcomings. Thread friction consumes energy, affecting stability and accuracy. Reverse transmission clearance causes commutation pauses or deviations. Their high mass inertia reduces dynamic response and positioning accuracy. However, their compact structure and stable transmission ratio make them valuable in specific high-precision, low-speed, stable-load testing scenarios.

[0004] Therefore, a double-screw synchronous drive linear motor testing platform is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a dual-screw synchronous drive linear motor test platform to solve the problem that the test platform proposed in the above background technology is difficult to meet diverse detection needs.

[0006] To achieve the above object, the present invention provides the following technical solution: A double-screw synchronous drive linear motor test platform, including a test bench, a scheduling frame is arranged at the upper end of the test bench, a touch display controller is arranged at the front end of the scheduling frame, a linear motor to be tested is arranged between the test bench and the scheduling frame, a connector is arranged below the scheduling frame, one end of a tensile and compressive force sensor is fixedly installed on the side of the connector, and the other end of the tensile and compressive force sensor is fixedly installed with a sliding plate. The test platform further includes a multiple test mechanism and a switching connection mechanism. The multiple test mechanism further includes a magnetic drive test component, a double-screw test component and a pneumatic test component. The magnetic drive test component can construct a dynamic magnetic field to conduct a counter-dragging test on the linear motor. The double-screw test component can achieve synchronous drive through a double-headed servo motor to provide a loading force in the horizontal direction. The pneumatic test component can provide a loading force by means of suction. The switching connection mechanism can be respectively connected to the double-screw test component and the pneumatic test component to realize the switching of three test modes.

[0007] Preferably, the linear motor to be tested includes a linear motor base arranged at the upper end of the test bench. A linear motor stator is fixedly installed at the upper end of the linear motor base. A linear motor mover is arranged at the upper end of the linear motor stator. The linear motor mover is fixedly installed at the bottom end of the sliding plate. The sliding plate is slidably connected to the linear motor base.

[0008] Preferably, the magnetic drive test component includes a connecting plate arranged at the rear end of the connector. A magnetic field generator mover is fixedly installed at the bottom end of the connecting plate. A magnetic field generator stator is arranged below the magnetic field generator mover. The magnetic field generator stator is fixedly installed on a support plate. The support plate is fixedly connected to the scheduling frame.

[0009] Preferably, the double-screw test component includes a transmission seat clamped on the side of the connector. The transmission seat is in threaded transmission connection with two groups of lead screws. Both groups of lead screws are rotatably connected to the scheduling frame.

[0010] Preferably, a double-headed servo motor is fixedly connected to the upper end of the scheduling frame. The output shaft of the double-headed servo motor is fixedly connected with a rotating rod through a coupling. A first pulley is fixedly connected to the outer end of the rotating rod. The first pulley is in belt transmission connection with a second pulley. The second pulley is fixedly connected to the lead screw.

[0011] Preferably, the pneumatic test component includes a drive seat clamped on the upper end of the connector. A piston rod is fixedly connected to one side of the drive seat. A piston is fixedly connected to the left side of the piston rod. The piston is arranged in an air cylinder. The air cylinder is fixedly installed on the scheduling frame.

[0012] Preferably, one end of an air delivery pipe is fixedly connected to the outside of the air cylinder. The other end of the air delivery pipe is fixedly connected to the bottom end of an air inlet pump. An air exhaust pump is arranged on the side of the air inlet pump. One end of an exhaust pipe is fixedly connected to the bottom end of the air exhaust pump. The other end of the exhaust pipe is fixedly connected to the air delivery pipe.

[0013] Preferably, the switching connection mechanism includes a first cylinder rotatably connected inside the connector. A first transmission wheel is fixedly installed on the outer side of the first cylinder. The first transmission wheel is connected to a second transmission wheel through a belt. The second transmission wheel is fixedly installed on the outer side of a second cylinder. An adjustment knob is fixedly installed on the outer side of the second cylinder.

[0014] Preferably, two groups of limiting plates are arranged inside both the first cylinder and the second cylinder. A return spring is arranged between the two groups of limiting plates. A clamping post is fixedly connected to the outer side of the limiting plate. Two symmetrical notches are arranged on the outer side of the clamping post. The outer end of the clamping post is clamped in a clamping groove. Several groups of clamping grooves are respectively opened on the transmission seat and the driving seat.

[0015] Advantages of the present invention:

[0016] 1. By designing a multiple testing mechanism, the present invention uses the loading force provided by the magnetic drive testing component to test the linear motor to be tested, which can effectively reduce the influence of friction. However, the thrust is not stable enough, and it is suitable for testing linear motors for transporting lighter goods. Using the loading force provided by the double lead screw testing component to test the linear motor to be tested can eliminate the positioning error caused by uneven force or mechanical clearance during the test. However, the phenomenon of transmission response lag easily caused by the inertia of the lead screw is suitable for testing linear motors with slow cargo transportation speed. Using the loading force provided by the pneumatic testing component to test the linear motor to be tested can avoid the phenomenon of transmission response lag caused by inertia and make the movement more stable. However, the pneumatic testing component occupies more space and is suitable for testing linear motors with high stability requirements and short strokes.

[0017] 2. By designing the magnetic drive testing component in cooperation with the multiple testing mechanism, the present invention uses the thrust of the magnetic field to provide a loading force for the connector, reduces the influence of friction during the test, greatly improves the test accuracy, and overcomes the defects of large starting hysteresis force and slower loading response speed in motor testing, making the test operation convenient, easy to control, highly flexible, and reliable.

[0018] 3. By designing the double lead screw testing component in cooperation with the multiple testing mechanism, the present invention uses a double-headed servo motor to synchronously drive two lead screws, enabling the transmission seat to move stably, facilitating the provision of a stable loading force for the connector, eliminating the positioning error caused by uneven force or mechanical clearance during the test, and the driving design of the double lead screws has a good offset effect on the influence of non-linear factors such as unilateral friction and thermal deformation, making the repeat positioning accuracy reach the micron level, meeting the test requirements of high-precision linear motors, and having advantages such as improving test accuracy, enhancing system stability, and expanding test scenarios.

[0019] The present invention designs a pneumatic test component in cooperation with a multiple test mechanism, and uses the suction of the air cylinder to provide thrust for the connector, avoiding the phenomenon of transmission response lag caused by the inertia of the lead screw, making the movement smoother, and the fluid-driven expansion and contraction can achieve stepless control of the movement speed of the linear motor mover, facilitating the simulation of various movement conditions of the linear motor.

[0020] 5. The present invention designs a switching connection mechanism in cooperation with a multiple test mechanism, and uses the orientation of the notch on the clamping post and the restoring force of the return spring to control the clamping post to enter and exit the card slot, facilitating the disassembly and assembly of the transmission seat and the driving seat on the connector, and the notches between different clamping posts are at 90 degrees, which can achieve staggered adjustment of locking and unlocking of the transmission seat and the driving seat, avoiding interference between the three test components. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is an overall three-dimensional schematic diagram of a double lead screw synchronous drive type linear motor test platform according to an embodiment of the present invention;

[0023] Figure 2 It is a three-dimensional schematic diagram of the magnetic drive test component of a double lead screw synchronous drive type linear motor test platform according to an embodiment of the present invention;

[0024] Figure 3 It is a three-dimensional schematic diagram of the double lead screw test component of a double lead screw synchronous drive type linear motor test platform according to an embodiment of the present invention;

[0025] Figure 4 It is a three-dimensional schematic diagram of the pneumatic test component of a double lead screw synchronous drive type linear motor test platform according to an embodiment of the present invention;

[0026] Figure 5 It is a partial three-dimensional schematic diagram of a double lead screw synchronous drive type linear motor test platform according to an embodiment of the present invention;

[0027] Figure 6 It is a Figure 5 Schematic cross-sectional view at location A of a double lead screw synchronous drive type linear motor test platform according to an embodiment of the present invention;

[0028] Figure 7 It is an exploded schematic diagram of the switching connection mechanism of a double lead screw synchronous drive type linear motor test platform according to an embodiment of the present invention.

[0029] The markings in the figure are: 1, test bench; 2, scheduling rack; 3, touch display screen controller;

[0030] 4, linear motor base; 41, linear motor stator; 42, linear motor mover; 43, carriage;

[0031] 5, connector; 51, tension and compression sensor;

[0032] 6, connecting plate; 61, magnetic field generator mover; 62, magnetic field generator stator; 63, support plate;

[0033] 7, drive seat; 71, lead screw; 72, double - head servo motor; 73, coupling; 74, rotating rod; 75, first pulley; 76, second pulley;

[0034] 8, driving seat; 81, piston rod; 82, piston; 83, air cylinder; 84, air pipe; 85, air inlet pump; 86, exhaust pump; 87, exhaust pipe;

[0035] 9, first cylinder; 91, second cylinder; 92, first transmission wheel; 93, second transmission wheel; 94, adjusting knob; 95, limiting plate; 96, return spring; 97, clamping post; 98, notch; 99, card slot. Detailed implementation manners

[0036] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments.

[0037] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this term cover the elements or objects listed after this term and their equivalents, without excluding other elements or objects. The terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0038] Please refer to Figures 1 to 7, the present invention provides a technical solution: a double-screw synchronous drive type linear motor test platform, which includes a test bench 1. A scheduling frame 2 is arranged at the upper end of the test bench 1. A touch display controller 3 is arranged at the front end of the scheduling frame 2. A linear motor to be tested is arranged between the test bench 1 and the scheduling frame 2. A connector 5 is arranged below the scheduling frame 2. One end of a tension and compression sensor 51 is fixedly installed on the side of the connector 5. The other end of the tension and compression sensor 51 is fixedly installed with a sliding plate 43. The test platform further includes a multi-test mechanism and a switching connection mechanism. The multi-test mechanism further includes a magnetic drive test component, a double-screw test component and a pneumatic test component. The magnetic drive test component can construct a dynamic magnetic field to conduct a counter-drag test on the linear motor. The double-screw test component can achieve synchronous drive through a double-headed servo motor 72 to provide a loading force in the horizontal direction. The pneumatic test component can provide a loading force by means of suction. The switching connection mechanism can be respectively connected to the double-screw test component and the pneumatic test component to realize the switching of three test modes. The linear motor to be tested includes a linear motor base 4 arranged at the upper end of the test bench 1. A linear motor stator 41 is fixedly installed at the upper end of the linear motor base 4. A linear motor mover 42 is arranged at the upper end of the linear motor stator 41. The linear motor mover 42 is fixedly installed at the bottom end of the sliding plate 43. The sliding plate 43 is slidably connected to the linear motor base 4. During use, the touch display controller 3 controls the AC and DC programmable power supplies inside the scheduling frame 2 to pass DC current into any two of the three-phase windings of the linear motor to be tested. The loading force drags the linear motor mover 42 to make a small-step stepping movement through the sliding plate 43. During the stepping movement of the sliding plate 43, the movement position of the linear motor mover 42 and the readings of the tension and compression sensor 51 corresponding to the position are read and recorded by using a linear grating, and then the static thrust values corresponding to each position can be obtained. The average value of the readings of the tension and compression sensor 51 at all positions is calculated, and then the force reading value at each position is subtracted from the average value to obtain the positioning force value corresponding to each position. The tests of the positioning force, static thrust, thrust linearity, thrust coefficient, back electromotive force waveform and back electromotive force coefficient of the linear motor to be tested can be completed. These measurements and calculations are existing conventional means and will not be described in detail here.

[0039] As an embodiment of the present invention, as Figure 1 and Figure 2As shown in the figure, the magnetic drive test assembly includes a connecting plate 6 provided at the rear end of the connector 5. A magnetic field generator mover 61 is fixedly installed at the bottom end of the connecting plate 6. A magnetic field generator stator 62 is provided below the magnetic field generator mover 61. The magnetic field generator stator 62 is fixedly installed on a support plate 63. The support plate 63 is fixedly connected to the dispatching rack 2. When using the thrust of the magnetic field as the loading force for counter-traction, first, the connector 5 is disengaged from the driving seat 7 and the drive seat 8 by using the switching connection mechanism. Then, the touch screen controller 3 supplies current to the magnetic field generator stator 62 to generate an air-gap magnetic field that is sinusoidally distributed in the longitudinal direction on the support plate 63. The air-gap magnetic field will move linearly in the direction of the alternating current phase sequence. This translated magnetic field is called a traveling-wave magnetic field. Then, the magnetic field generator mover 61 forms a directional induced current under the cutting of the traveling-wave magnetic field. The magnetic field generator mover 61 generates a longitudinal electromagnetic thrust under the combined action of the induced current and the magnetic field. Finally, the electromagnetic thrust of the magnetic field is used as the loading force to drive the linear motor mover 42 to move. The linear grating is used to read and record the movement position of the linear motor mover 42 and the readings of the tension and compression sensor 51 corresponding to the position. This is beneficial for using the thrust of the magnetic field to provide a loading force for the connector 5, reducing the influence of friction during the test, greatly improving the test accuracy, and overcoming the defects of large starting stagnation force and slower loading response speed in motor testing, making the test operation convenient, easy to control, highly flexible, and reliable.

[0040] As an embodiment of the present invention, as Figure 1 and Figure 3As shown in the figure, the double-screw test assembly includes a transmission seat 7 clamped on the side of the connector 5. The transmission seat 7 is threadedly connected to two groups of lead screws 71. Both groups of lead screws 71 are rotatably connected to the scheduling frame 2. The upper end of the scheduling frame 2 is fixedly connected with a double-headed servo motor 72. The output shaft of the double-headed servo motor 72 is fixedly connected with a rotating rod 74 through a coupling 73. The outer end of the rotating rod 74 is fixedly connected with a first pulley 75. The first pulley 75 is connected to a second pulley 76 through belt drive. The second pulley 76 is fixedly connected to the lead screw 71. When using the driving force of the double-headed servo motor 72 as the loading force for counter-dragging, first connect the connector 5 to the transmission seat 7 by using the switching connection mechanism, and make the connector 5 separable from the driving seat 8. Then, the touch screen controller 3 controls the double-headed servo motor 72 to start. The double-headed servo motor 72 drives the two groups of first pulleys 75 to rotate through the coupling 73 and the rotating rod 74. Then, because the two output shafts of the double-headed servo motor 72 are set to rotate in the same direction, the coaxial rotation of the double-headed servo motor 72 is prior art and will not be described in detail here. Therefore, the two groups of first pulleys 75 drive the two groups of second pulleys 76 to rotate in the same direction through the belt, so that the transmission seat 7 can move. Finally, the transmission seat 7 drives the linear motor mover 42 at the bottom of the slide plate 43 to move through the connector 5 and the tension and compression sensor 51. It is beneficial to synchronously drive the two groups of lead screws 71 by the double-headed servo motor 72, so that the transmission seat 7 can move stably, which is convenient to provide a stable loading force for the connector 5, and can eliminate the positioning error caused by uneven force or mechanical clearance in the test. Moreover, the drive design of the double-screw can offset the influence of non-linear factors such as unilateral friction and thermal deformation, making the repeat positioning accuracy reach the micron level, meeting the test requirements of high-precision linear motors, and having advantages such as improving the test accuracy, enhancing the system stability, and expanding the test scenarios.

[0041] As an embodiment of the present invention, as Figure 1 and Figure 4As shown in the figure, the pneumatic test assembly includes a drive seat 8 clamped to the upper end of the connector 5. One side of the drive seat 8 is fixedly connected to a piston rod 81, and the left side of the piston rod 81 is fixedly connected to a piston 82. The piston 82 is arranged in a cylinder 83, and the cylinder 83 is fixedly installed on the dispatching frame 2. One end of an air delivery pipe 84 is fixedly connected to the outside of the cylinder 83, and the other end of the air delivery pipe 84 is fixedly connected to the bottom end of an air inlet pump 85. An air exhaust pump 86 is arranged on the side of the air inlet pump 85. One end of an exhaust pipe 87 is fixedly connected to the bottom end of the air exhaust pump 86, and the other end of the exhaust pipe 87 is fixedly connected to the air delivery pipe 84. When using the thrust of gas as the loading force for counter-traction, first, connect the connector 5 to the drive seat 8 through the switching connection mechanism and make the connector 5 separable from the transmission seat 7. Then start the air inlet pump 85. The air inlet pump 85 sends external gas into the cylinder 83 through the air delivery pipe 84. The gas in the cylinder 83 drives the drive seat 8 to move leftward through the piston rod 81 and the piston 82. Then start the air exhaust pump 86. The air exhaust pump 86 discharges the gas in the cylinder 83 through the linear motor base 4 and the exhaust pipe 87, causing the drive seat 8 to move rightward. Finally, the drive seat 8 drives the linear motor mover 42 at the bottom end of the sliding plate 43 to move through the connector 5 and the tensile and compressive force sensor 51. This is beneficial to providing thrust for the connector 5 by the suction of the cylinder 83, avoiding the phenomenon of transmission response lag caused by the inertia of the lead screw, making the movement smoother, and enabling stepless control of the movement speed of the linear motor mover 42 through fluid-driven expansion and contraction, facilitating the simulation of various movement conditions of the linear motor.

[0042] As an embodiment of the present invention, as Figure 5 , Figure 6 and Figure 7As shown in the figure, the switching connection mechanism includes a first cylinder body 9 rotatably connected inside the connector 5. A first transmission wheel 92 is fixedly installed on the outer side of the first cylinder body 9. The first transmission wheel 92 is connected to a second transmission wheel 93 through a belt drive. The second transmission wheel 93 is fixedly installed on the outer side of a second cylinder body 91. An adjustment knob 94 is fixedly installed on the outer side of the second cylinder body 91. Two groups of limiting plates 95 are arranged inside both the first cylinder body 9 and the second cylinder body 91. A return spring 96 is arranged between the two groups of limiting plates 95. A clamping column 97 is fixedly connected to the outer side of the limiting plate 95. Two symmetrically arranged notches 98 are arranged on the outer side of the clamping column 97. The outer end of the clamping column 97 is clamped in a clamping groove 99. Several groups of clamping grooves 99 are respectively opened on a transmission seat 7 and a driving seat 8. When it is necessary to disassemble or assemble the transmission seat 7 or the driving seat 8 of the connector 5, rotate the adjustment knob 94. The adjustment knob 94 can drive the second cylinder body 91 to rotate. Since the first transmission wheel 92 is connected to the second transmission wheel 93 through a belt drive, the first transmission wheel 92 is arranged on the first cylinder body 9, and the second transmission wheel 93 is arranged on the second cylinder body 91, the second cylinder body 91 can drive the first cylinder body 9 to rotate synchronously. Also, since limiting plates 95 are arranged inside both the first cylinder body 9 and the second cylinder body 91, and the limiting plates 95 are polygonally arranged, the first cylinder body 9 and the second cylinder body 91 can drive the clamping column 97 to rotate through the limiting plates 95, so that the adjustment knob 94 can change the orientation of the notch 98 on the clamping column 97. Then, when the notch 98 on the clamping column 97 faces the moving direction of the transmission seat 7 or the driving seat 8, since the length of the projection of the inclined surface of the notch 98 in the horizontal direction is greater than the depth of the clamping groove 99, the transmission seat 7 or the driving seat 8 can press the clamping column 97 into the first cylinder body 9 or the second cylinder body 91 along the notch 98, so that the clamping column 97 is disengaged from the clamping groove 99, and further the transmission seat 7 or the driving seat 8 can be disengaged. And the clamping column 97 can be reset through the return spring 96. When the notch 98 on the clamping column 97 faces upward, the transmission seat 7 or the driving seat 8 cannot press the clamping column 97 along the notch 98, thereby realizing the locking of the transmission seat 7 or the driving seat 8. Finally, since the orientations of the notches 98 on the clamping columns 97 on both sides of the first cylinder body 9 differ by ninety degrees from the orientations of the notches 98 on the clamping columns 97 on both sides of the second cylinder body 91, the staggered adjustment of locking one and disengaging the other of the transmission seat 7 and the driving seat 8 can be realized, which is beneficial to controlling the clamping column 97 to enter and exit the clamping groove 99 by using the orientation of the notch 98 on the clamping column 97 and the restoring force of the return spring 96, facilitating the disassembly and assembly of the transmission seat 7 and the driving seat 8 on the connector 5. And the notches 98 between different clamping columns 97 are ninety degrees, which can realize the staggered adjustment of locking one and disengaging the other of the transmission seat 7 and the driving seat 8, avoiding interference between the three test components.

[0043] Working principle: When using the thrust of the magnetic field as the loading force for counter-traction, first, the switching connection mechanism is used to disconnect the connector 5 from the transmission seat 7 and the driving seat 8. Then, the touch display controller 3 supplies current to the stator 62 of the magnetic field generator, generating an air-gap magnetic field with a sinusoidal distribution along the longitudinal direction on the support plate 63. The air-gap magnetic field will move linearly in the direction of the alternating current phase sequence. This translational magnetic field is called a traveling-wave magnetic field. Then, the mover 61 of the magnetic field generator forms a directional induced current under the cutting of the traveling-wave magnetic field. The mover 61 of the magnetic field generator generates a longitudinal electromagnetic thrust under the combined action of the induced current and the magnetic field. Finally, the electromagnetic thrust of the magnetic field is used as the loading force to drive the mover 42 of the linear motor to move. The linear grating is used to read and record the movement position of the mover 42 of the linear motor and the readings of the tension and compression force sensor 51 corresponding to the position;

[0044] When using the driving force of the double-headed servo motor 72 as the loading force for counter-traction, first, the switching connection mechanism is used to connect the connector 5 to the transmission seat 7 and make the connector 5 detachable from the driving seat 8. Then, the touch display controller 3 controls the double-headed servo motor 72 to start. The double-headed servo motor 72 drives two groups of first belt pulleys 75 to rotate through the coupling 73 and the rotating rod 74. Then, because the two output shafts of the double-headed servo motor 72 are set to rotate in the same direction, and the coaxial rotation of the double-headed servo motor 72 is a prior art and will not be described in detail here, so the two groups of first belt pulleys 75 drive two groups of second belt pulleys 76 to rotate in the same direction through the belt, so that the transmission seat 7 can move. Finally, the transmission seat 7 drives the mover 42 at the bottom of the slide plate 43 to move through the connector 5 and the tension and compression force sensor 51;

[0045] When using the thrust of the gas as the loading force for counter-traction, first, the switching connection mechanism is used to connect the connector 5 to the driving seat 8 and make the connector 5 detachable from the transmission seat 7. Then, the air inlet pump 85 is started. The air inlet pump 85 sends external gas into the air cylinder 83 through the air delivery pipe 84. The gas in the air cylinder 83 drives the driving seat 8 to move leftward through the piston rod 81 and the piston 82. Then, the exhaust pump 86 is started. The exhaust pump 86 discharges the gas in the air cylinder 83 through the linear motor base 4 and the exhaust pipe 87, making the driving seat 8 move rightward. Finally, the driving seat 8 drives the mover 42 at the bottom of the slide plate 43 to move through the connector 5 and the tension and compression force sensor 51;

[0046] When it is necessary to disassemble or assemble the driving seat 7 or the driving base 8 on the connector 5, turn the adjusting knob 94. Since the first driving wheel 92 is drivingly connected to the second driving wheel 93 provided on the second cylinder 91 through a belt, turning the adjusting knob 94 can drive the second cylinder 91 to rotate synchronously, and then drive the first cylinder 9 provided with the first driving wheel 92 to rotate together. Polygonal limiting plates 95 are provided in both the first cylinder 9 and the second cylinder 91. The two cylinders can drive the clamping post 97 to rotate through the limiting plates 95, so as to change the orientation of the notch 98 on the clamping post 97. When the notch 98 on the clamping post 97 faces the moving direction of the driving seat 7 or the driving base 8, because the length of the projection of the inclined surface of the notch 98 in the horizontal direction is greater than the depth of the clamping groove 99, the driving seat 7 or the driving base 8 can press the clamping post 97 into the first cylinder 9 or the second cylinder 91 along the notch 98, so that the clamping post 97 is disengaged from the clamping groove 99, realizing the disassembly of the driving seat 7 or the driving base 8. Subsequently, the return spring 96 can reset the clamping post 97. When the notch 98 on the clamping post 97 faces the upper end, the driving seat 7 or the driving base 8 cannot press the clamping post 97 along the notch 98, thus realizing the locking of the driving seat 7 or the driving base 8. In addition, the orientations of the notches 98 on the clamping posts 97 on both sides of the first cylinder 9 differ from the orientations of the notches 98 on the clamping posts 97 on both sides of the second cylinder 91 by ninety degrees. This design can realize the staggered adjustment of locking and unlocking of the driving seat 7 and the driving base 8.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

[0048] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A double-screw synchronous drive linear motor test platform, comprising a test bench (1). A scheduling frame (2) is arranged at the upper end of the test bench (1). A touch display controller (3) is arranged at the front end of the scheduling frame (2). A linear motor to be tested is arranged between the test bench (1) and the scheduling frame (2). A connector (5) is arranged below the scheduling frame (2). One end of a tension and compression sensor (51) is fixedly installed on the side of the connector (5). The other end of the tension and compression sensor (51) is fixedly installed with a sliding plate (43). It is characterized in that: The test platform further comprises a multi-test mechanism and a switching connection mechanism. The multi-test mechanism further comprises a magnetic drive test component, a double-screw test component and a pneumatic test component. The magnetic drive test component can construct a dynamic magnetic field to conduct a counter-dragging test on the linear motor. The double-screw test component can achieve synchronous drive through a double-headed servo motor (72) to provide a loading force in the horizontal direction. The pneumatic test component can provide a loading force by means of suction. The switching connection mechanism can be respectively connected to the double-screw test component and the pneumatic test component to realize the switching of three test modes; The switching connection mechanism comprises a first cylinder body (9) rotatably connected inside the connector (5). A first transmission wheel (92) is fixedly installed on the outer side of the first cylinder body (9). The first transmission wheel (92) is connected to a second transmission wheel (93) by a belt drive. The second transmission wheel (93) is fixedly installed on the outer side of a second cylinder body (91). An adjusting knob (94) is fixedly installed on the outer side of the second cylinder body (91); Two groups of limiting plates (95) are arranged inside both the first cylinder body (9) and the second cylinder body (91). A return spring (96) is arranged between the two groups of limiting plates (95). A clamping column (97) is fixedly connected to the outer side of the limiting plate (95). Two symmetrical notches (98) are arranged on the outer side of the clamping column (97). The outer end of the clamping column (97) is clamped in a clamping groove (99). Several groups of the clamping grooves (99) are respectively opened on a transmission seat (7) and a driving seat (8).

2. The linear motor test platform with double lead screw synchronous drive according to claim 1, characterized in that The linear motor to be tested comprises a linear motor base (4) arranged at the upper end of the test bench (1). A linear motor stator (41) is fixedly installed at the upper end of the linear motor base (4). A linear motor mover (42) is arranged at the upper end of the linear motor stator (41). The linear motor mover (42) is fixedly installed at the bottom end of the sliding plate (43). The sliding plate (43) is slidably connected to the linear motor base (4).

3. A double-screw synchronous drive linear motor test platform according to claim 1, characterized in that The magnetic drive test component comprises a connecting plate (6) arranged at the rear end of the connector (5). A magnetic field generator mover (61) is fixedly installed at the bottom end of the connecting plate (6). A magnetic field generator stator (62) is arranged below the magnetic field generator mover (61). The magnetic field generator stator (62) is fixedly installed on a support plate (63). The support plate (63) is fixedly connected to the scheduling frame (2).

4. A double-screw synchronous drive linear motor test platform according to claim 1, characterized in that The double-screw testing assembly includes a transmission seat (7) clamped on the side of the connector (5). The transmission seat (7) is in threaded transmission connection with two groups of lead screws (71), and the two groups of lead screws (71) are both rotatably connected to the scheduling frame (2).

5. A double-screw synchronous drive linear motor test platform according to claim 4, characterized in that, A double-headed servo motor (72) is fixedly connected to the upper end of the scheduling frame (2). The output shaft of the double-headed servo motor (72) is fixedly connected to a rotating rod (74) through a coupling (73). A first pulley (75) is fixedly connected to the outer end of the rotating rod (74). The first pulley (75) is in belt transmission connection with a second pulley (76), and the second pulley (76) is fixedly connected to the lead screw (71).

6. The linear motor test platform with double lead screw synchronous drive according to claim 1, characterized in that, The pneumatic testing assembly includes a driving seat (8) clamped on the upper end of the connector (5). A piston rod (81) is fixedly connected to one side of the driving seat (8). A piston (82) is fixedly connected to the left side of the piston rod (81). The piston (82) is arranged in a cylinder (83), and the cylinder (83) is fixedly installed on the scheduling frame (2).

7. A double-screw synchronous drive linear motor test platform according to claim 6, characterized in that, One end of an air delivery pipe (84) is fixedly connected to the outside of the cylinder (83). The other end of the air delivery pipe (84) is fixedly connected to the bottom end of an air inlet pump (85). An air exhaust pump (86) is arranged on the side of the air inlet pump (85). One end of an exhaust pipe (87) is fixedly connected to the bottom end of the air exhaust pump (86). The other end of the exhaust pipe (87) is fixedly connected to the air delivery pipe (84).

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