Magnetic field force application device, molded surface detection system, molded surface detection method and use method of molded surface detection system

Abstract

The invention provides a magnetic field force application device, a molded surface detection system, a molded surface detection method and a use method of the molded surface detection system.The magnetic field force application device comprises a magnetic field generator and a pressure generator, and the magnetic field generator comprises a connecting assembly, an electromagnetic coil and a current controller; the connecting assembly is detachably connected with the tool frame, the electromagnetic coil and the current controller are both located on the connecting assembly, and the current controller is connected with the electromagnetic coil and used for electrifying the electromagnetic coil and controlling the magnitude of current; the pressure generator comprises a permanent magnet, a pressure pad and a pressure sensor; the pressure pad is connected with the permanent magnet, the permanent magnet is used for generating pressing force and transmitting the pressing force to the pressure pad, the pressure pad is used for transmitting the pressing force to a to-be-tested structural member, the pressure sensor is connected with the pressure pad, and the pressure sensor is used for acquiring a pressure signal of the pressure pad and transmitting the pressure signal to the current controller. According to the invention, the efficiency and accuracy of profile deviation detection of the composite material structural member are improved.

Description

Technical Field

[0001] The present invention relates to the field of composite material parts detection, and in particular to a magnetic field force application device, a profile detection system, a profile detection method and a method for using the profile detection system. Background Art

[0002] Composite materials are often used as structural parts in aerospace, shipbuilding, automobile manufacturing and other fields because of their high specific strength, high specific stiffness and strong designability. In order to ensure the manufacturing accuracy and structural strength of composite structural parts, surface deviation detection is usually required after their manufacturing is completed. When there is a deviation in the surface of the composite structural part, a force less than a specific value can be applied within a certain area range according to relevant specifications, and the surface deviation value after the force is applied can be used to determine whether the structural part meets the acceptance requirements. The position and magnitude of the force applied during the surface detection process will directly affect the results of the surface deviation detection, thereby affecting the pass rate of the structural part.

[0003] In the field of composite structural parts manufacturing, a special surface inspection tool is usually designed for the composite structural parts to be inspected. The composite structural parts to be tested are fixed on the inspection tool through ears or clamps, and a force-applying device such as a sandbag, bandage or manual force-applying ejector rod is used to apply a pressing force to the structural parts. However, these force application methods have the following shortcomings: 1. If the structure to be tested is placed horizontally on the inspection tooling, a fixed-weight sandbag is used to apply a compressive force to it. This method cannot adjust the size and direction of the force applied by the sandbag, resulting in insufficient force on the large curvature part of the structure, and the warping of this part cannot be effectively suppressed; 2. If the structure to be tested is fixed vertically on the inspection tooling, a bandage is used to restrain the product and apply a compressive force to it. This method cannot control the bandage force value, and the compressive force may exceed the specified value, resulting in uncontrollable force; 3. If the structure is fixed on the inspection tooling with a fixed force application device by a positioning device, the method disclosed in CN 111750762A is used to adjust the compressive force of the force application push rod, and the force value is monitored by a pressure sensor. This method has a large workload for force adjustment due to the fixed force application position and force application direction and a large number of force application devices. In addition, the force application device is large in size and easily blocks the detection area, and the surface deviation of the structure to be tested cannot be given intuitively.

[0004] Therefore, there is an urgent need for a device for applying a compacting force that is small in size, easy to move, and can adjust the direction and magnitude of the force, so as to improve the efficiency and accuracy of the surface deviation detection of composite material structural parts. Summary of the invention

[0005] The object of the present invention is to provide a magnetic field force application device, a profile detection system, a profile detection method and a method for using the profile detection system to achieve the function of improving the efficiency and accuracy of profile deviation detection of composite material structural parts.

[0006] In order to achieve the purpose of the present invention, on the one hand, the technical solution adopted by the present invention is: A magnetic field force applying device, comprising a magnetic field generator and a pressure generator, wherein the magnetic field generator is separately arranged from the pressure generator, the magnetic field generator is detachably connected to a tooling frame, the tooling frame is used to fix a structure to be tested, the pressure generator is arranged on the structure to be tested, the magnetic field generator is used to generate a magnetic field, and the pressure generator is used to generate a pressing force on the structure to be tested in response to the direction and strength of the magnetic field; The magnetic field generator includes a connecting component, an electromagnetic coil and a current controller; the connecting component is detachably connected to the tooling frame, the electromagnetic coil and the current controller are both located on the connecting component, the current controller is connected to the electromagnetic coil, the current controller is used to energize the electromagnetic coil, and the current controller is also used to control the magnitude of the output current according to the first pressure value of the pressing force and the preset second pressure value, so as to adjust the magnitude of the first pressure value; The pressure generator includes a permanent magnet, a pressure pad and a pressure sensor; the pressure pad is connected to the permanent magnet, the pressure pad is in contact with the surface of the structure to be tested, and the pressure sensor is connected to the pressure pad. The permanent magnet is used to respond to the direction and strength of the magnetic field to generate a clamping force on the pressure pad, and the pressure pad is used to transmit the clamping force to the structure to be tested. The pressure sensor is used to obtain a pressure signal of the pressure pad and transmit the pressure signal to the current controller, and the pressure signal includes information of the first pressure value.

[0007] Furthermore, the magnetic field generator also includes a magnetic field confinement shell, which is a fully enclosed hollow setting, the magnetic field confinement shell is rotatably connected to the connecting assembly, the electromagnetic coil and the current controller are both connected to the inside of the magnetic field confinement shell, and the magnetic field confinement shell is used to constrain the direction of the magnetic field to reduce leakage magnetic flux.

[0008] Furthermore, the connecting assembly includes a magnetic base and a connecting rod, the magnetic base is magnetically attracted to a tooling frame that fixes the structure to be tested, and the connecting rod includes a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably connected to the magnetic base, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod is rotatably connected to the magnetic field confinement shell.

[0009] Furthermore, the magnetic field generator also includes a signal receiver, which is connected in the magnetic field confinement shell, and the signal receiver is connected to the current controller. The signal receiver is used to receive the pressure signal and send the pressure signal to the current controller. The pressure generator also includes a signal generator, which is connected to the pressure sensor, and the pressure sensor sends the pressure signal to the signal generator. The signal generator is used to receive the pressure signal and send the pressure signal to the signal receiver.

[0010] On the other hand, the technical solution adopted by the present invention is: A profile detection system comprises the above-mentioned magnetic field force application device, a tooling frame, a profile detection device and an industrial control device. The tooling frame is used to fix the structural part to be tested; The profile detection device is arranged on one side of the fixture frame, and is used to obtain the coordinate information of the profile of the structural part to be tested; The magnetic field force applying device is located at a designated position on the fixture, the designated position is adjacent to a target force applying position of the structure to be tested, and there is a gap between the designated position and the target force applying position; the pressure pad of the magnetic field force applying device is in contact with the surface of the target force applying position of the structure to be tested, so as to apply a pressing force to the structure to be tested; The industrial control device is arranged on one side of the tooling frame, and is communicatively connected with the profile detection device, and is communicatively connected with the magnetic field force application device. The industrial control device is used to calculate the profile deviation detection result according to the coordinate information of the profile, and adjust the size of the clamping force applied by the magnetic field force application device to the structural part to be tested according to the profile deviation detection result.

[0011] Furthermore, the tooling frame includes a jig, an inner jig plate and an outer jig plate, the jig is provided with a slot for the inner jig plate and the outer jig plate to be plugged in, the inner jig plate and the outer jig plate are plugged in and matched with the jig through the slot, the jig is provided with a plurality of ear holes, and the ear holes are used to fix the structural parts to be tested through pins.

[0012] Furthermore, the surface detection device includes a laser radar, a target seat and a target ball, the target seat is connected to the jig, the target ball is connected to the target seat, the laser radar and the target ball are separately arranged, and are used to scan the coordinate information of the surface of the structural part to be tested and calculate the surface deviation detection result.

[0013] Furthermore, a positioning hole is provided on the jig, and the target seat is plugged into and matched with the positioning hole. The laser radar is used to emit laser to the target ball and receive laser reflected by the target ball to obtain actual coordinate information of the center point of the target ball. The industrial control device is used to obtain position deviation information of the positioning hole based on the actual coordinate information and the preset theoretical coordinate information. The position deviation information of the positioning hole is used to indicate the horizontal state of the jig.

[0014] On the other hand, the technical solution adopted by the present invention is: A surface detection method is applied to the above-mentioned surface detection system, the method comprising: Acquire first coordinate information of the profile of the structural component to be tested in a free state, and calculate and obtain a first profile deviation detection result; Determining whether the first profile deviation detection result is within a preset tolerance requirement range; If the first profile deviation detection result is not within the preset tolerance requirement range, applying force to the profile of the structural component to be tested so that the profile of the structural component to be tested is deformed by the force; Acquire the second coordinate information of the profile of the structural component to be tested after the force is applied, and calculate the second profile deviation detection result; The force applied to the profile of the structural component to be tested is adjusted until the second profile deviation detection result is within a preset tolerance requirement range.

[0015] On the other hand, the technical solution adopted by the present invention is: A method for using a profile detection system is applied to the profile detection system described above, and the method comprises the following steps: Leveling the fixture frame to reduce the influence of the fixture frame's deadweight on the surface deviation detection result; Fix the structure to be tested by using the fixture frame; The first coordinate information of the profile of the structural part to be tested in a free state is obtained by a profile detection device, the profile detection device transmits the first coordinate information to the industrial control device, the industrial control device calculates a first profile deviation detection result according to the first coordinate information, and determines whether the first profile deviation detection result is within a preset tolerance requirement range; If the first profile deviation detection result is not within the preset tolerance requirement range, the magnetic field generator of the magnetic field force application device is connected to the target force application location of the tooling frame adjacent to the structure to be tested, and the pressure generator of the magnetic field force application device is placed at the target force application location of the structure to be tested, so that the pressure generator responds to the direction and intensity of the magnetic field to generate a pressing force on the structure to be tested; The second coordinate information of the profile of the structural part to be tested after the force is applied is obtained by the profile detection device, the profile detection device transmits the second coordinate information to the industrial control device, the industrial control device calculates the second profile deviation detection result according to the second coordinate information, and determines whether the second profile deviation detection result is within a preset tolerance requirement range; If the second profile deviation detection result is not within the preset tolerance requirement range, the industrial control device is used to control the magnetic field force device to change the magnitude of the clamping force applied to the structural part to be tested until the second profile deviation detection result is within the preset tolerance requirement range.

[0016] Beneficial effects of the present invention: 1. The present invention forms a magnetic field by setting a magnetic field generator, and sets a pressure generator. The pressure generator includes a permanent magnet. The permanent magnet can generate a clamping force on the structure to be tested in response to the direction and strength of the magnetic field. The magnetic field generator and the pressure generator are separately set, and the magnetic field generator can be detachably connected to the tooling frame. The pressure generator is magnetically attracted to the structure to be tested through the magnetic attraction effect between the permanent magnet and the magnetic field generator. The size of the clamping force can be changed by changing the magnetic field size of the magnetic field generator. Since the pressure generator is magnetically attracted to the structure to be tested, the pressure generator can be moved to the position where force needs to be applied by turning off the magnetic field generator, so that the pressure generator is easy to move and the position adjustment is simple, thereby improving the efficiency and accuracy of the surface deviation detection of the structure to be tested.

[0017] 2. The present invention separates the magnetic field generator from the pressure generator, and uses the magnetic attraction principle between the magnetic field generator and the pressure generator to apply force to the structure to be tested. The magnetic field generator can be detachably connected to the tooling frame, and the pressure generator is magnetically attracted to the structure to be tested by the magnetic field. The pressure generator can be moved by turning off the magnetic field generator. Surface detection usually uses laser radar or optical sensors to measure the surface features of the object. The pressure generator can be arranged on the inner surface side of the structure to be tested to reduce the pressure generator's obstruction of the surface detection light beam, thereby ensuring measurement accuracy.

[0018] 3. The present invention utilizes the magnetic attraction principle between a magnetic field generator and a pressure generator to realize the force applied to the structure to be tested. The magnetic field generator includes an electromagnetic coil and a current controller. The current controller is used to control the power supply to the electromagnetic coil, thereby adjusting the size and direction of the magnetic field, thereby quantitatively adjusting the size and direction of the force, so that the pressure generator can apply a variable clamping force to the structure to be tested, thereby improving the efficiency and accuracy of the surface deviation detection of the structure to be tested.

[0019] 4. The magnetic field generator can be detachably connected to the tooling frame, the position of the magnetic field generator can be adjusted, and the position of the pressure generator can also be adjusted accordingly, which improves the applicability and flexibility of the magnetic field force application device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is a schematic diagram of the overall structure of a magnetic field force applying device of the present invention.

[0021] Figure 2 The figure is a schematic diagram of the internal structure of a magnetic field generator of a magnetic field force applying device of the present invention.

[0022] Figure 3 This is a schematic diagram of the internal structure of a pressure generator of a magnetic field force applying device of the present invention.

[0023] Figure 4 The figure is a schematic diagram of the overall structure of a profile detection device of the present invention.

[0024] Figure 5 for Figure 4 A partial enlarged schematic diagram of part A.

[0025] Figure 6 for Figure 4 A partial enlarged schematic diagram of part B.

[0026] Figure 7 The figure is a flow chart of a surface detection method of the present invention.

[0027] Figure 8 The present invention is a flowchart of a method for using a surface detection system.

[0028] Description of reference numerals: 1. Magnetic field force device; 11. Magnetic field generator; 112. Connecting assembly; 113. Electromagnetic coil; 114. Signal receiver; 115. Current controller; 116. Magnetic field restraint housing; 1121. Magnetic base; 1122. Connecting rod; 11221. First connecting rod; 11222. Second connecting rod; 12. pressure generator; 121. housing; 122. permanent magnet; 123. pressure pad; 124. signal generator; 125. pressure sensor; 5. Structural part to be tested; 6. First set of rings; 7. Second set of rings; 71. Screw; 72. Rotary block; 2. Tooling frame; 21. Profile frame; 22. Inner profile plate; 23. Outer profile plate; 8. Fixing block; 9. Pin; 10. Foot; 3. Surface detection device; 31. Laser radar; 32. Target seat; 33. Target ball; 4. Industrial control equipment. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the present invention belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0030] The present embodiment provides a magnetic field force applying device 1, which includes a magnetic field generator 11 and a pressure generator 12. The magnetic field generator 11 and the pressure generator 12 are separately arranged, and the magnetic field generator 11 is detachably connected to the fixture frame 2. The fixture frame 2 is used to fix the structure to be tested 5, and the pressure generator 12 is used to be connected to the structure to be tested 5. The magnetic field generator 11 is used to generate a magnetic field, and the pressure generator 12 is used to respond to the direction and intensity of the magnetic field to generate a pressing force on the structure to be tested 5. The inspector can obtain the deviation value of the profile of the structure to be tested 5 after the force is applied to the structure to be tested 5, and can judge whether the structure to be tested 5 meets the acceptance requirements according to the profile deviation value.

[0031] Specifically, the magnetic field generator 11 includes a connecting component 112, an electromagnetic coil 113, a signal receiver 114 and a current controller 115. The connecting component 112 is detachably connected to the fixture frame 2 that fixes the structure 5 to be tested. The electromagnetic coil 113, the signal receiver 114 and the current controller 115 are all located on the connecting component 112. The current controller 115 is connected to the electromagnetic coil 113. The current controller 115 is used to energize the electromagnetic coil 113. After the electromagnetic coil 113 is energized, a magnetic field is generated. The signal receiver 114 is connected to the current controller 115. The pressure generator 12 generates a pressing force on the structure 5 to be tested in response to the direction and intensity of the magnetic field, and sends a pressure signal at the same time. The signal receiver 114 is used to receive the pressure signal sent by the pressure generator 12 and send the pressure signal to the current controller 115. The current controller 115 receives the pressure signal and converts it to obtain a first pressure value of the pressing force according to the pressure signal. A reference pressure value is preset in advance in the current controller 115 and recorded as a second pressure value. The inspection personnel can change the second pressure value according to the actual situation. The current controller 115 controls the magnitude of the current flowing to the electromagnetic coil 113 according to the first pressure value of the pressing force and the preset second pressure value to adjust the magnitude of the first pressure value, thereby changing the magnitude of the force applied to the structure 5 to be tested.

[0032] Specifically, the pressure generator 12 includes a housing 121, a permanent magnet 122, a pressure pad 123, a signal generator 124 and a pressure sensor 125. In this embodiment, the housing 121 is cylindrical, one end of the housing 121 is closed, the permanent magnet 122 and the signal generator 124 are fixed inside the housing 121, and the permanent magnet 122 and the signal generator 124 are spaced apart. The pressure pad 123 is connected to the permanent magnet 122, and the shape and size of the pressure pad 123 are consistent with the shape and size of the open end of the housing 121. The permanent magnet 122 is used to respond to the direction and strength of the magnetic field to generate a pressing force on the pressure pad 123. The pressure pad 123 is in contact with the surface of the structure 5 to be tested, and the pressure pad 123 is used to transmit the pressing force to the structure 5 to be tested. The pressure sensor 125 is connected to the pressure pad 123 , and the signal generator 124 is connected to the pressure sensor 125 . The pressure sensor 125 is used to obtain the pressure signal of the pressure pad 123 and transmit the pressure signal to the signal generator 124 . The signal generator 124 receives the pressure signal and sends the pressure signal to the signal receiver 114 .

[0033] Furthermore, the magnetic field generator 11 also includes a magnetic field confinement shell 116, which is a fully enclosed hollow shell. In the present embodiment, the magnetic field confinement shell 116 is square in shape, and one side of the magnetic field confinement shell 116 is rotatably connected to the connecting assembly 112. The electromagnetic coil 113, the signal receiver 114 and the current controller 115 are all fixed inside the magnetic field confinement shell 116. The magnetic field confinement shell 116 is used to confine the direction of the magnetic field to reduce magnetic leakage.

[0034] Furthermore, the connecting component 112 includes a magnetic base 1121 and a connecting rod 1122. The magnetic base 1121 can be rotatably connected to the magnetic base 1121 at one end of the workpiece frame 2, and the other end of the connecting rod 1122 is rotatably connected to the magnetic field confinement shell 116. There is a gap between the magnetic field confinement shell and the magnetic base 1121. By rotating the connecting rod 1122, the position and angle of the magnetic field confinement shell can be adjusted, thereby adjusting the position and angle of the electromagnetic coil 113. Specifically, the connecting rod 1122 includes a first connecting rod 11221 and a second connecting rod 11222, one end of the first connecting rod 11221 is rotatably connected to the magnetic base 1121, and the other end of the first connecting rod 11221 is rotatably connected to one end of the second connecting rod 11222 through a first sleeve ring 6 and a second sleeve ring 7, wherein the first sleeve ring 6 is sleeved on the first connecting rod 11221, and the second sleeve ring 7 is sleeved on the second connecting rod 11222, and a first threaded hole is formed on the first sleeve ring 6, the second sleeve ring 7 and the second connecting rod 1122, and a screw 71 runs through the first threaded hole, and the screw 71 is threadedly connected to the first sleeve ring 6, the second sleeve ring 7 and the second connecting rod 1122 through the first threaded hole, and a rotary block is fixed on the screw 71 72, by rotating the rotary block 72, the screw rod 71 can be driven to rotate, thereby releasing the fixation of the first ring 6 and the second ring 7, and at this time the second connecting rod 11222 can be swung to make the second connecting rod 11222 and the first connecting rod 11221 rotate relative to each other, when the rotary block 72 is rotated to completely loosen the screw rod 71, the first ring 6 can move relative to the first connecting rod 11221, and the second ring 7 can also move relative to the second connecting rod 11222, and the position of the first ring 6 on the first connecting rod 11221 can be changed by moving the first ring 6, and the position of the second ring 7 on the second connecting rod 11222 can also be changed by moving the second ring 7, thereby changing the relative position between the magnetic field confinement shell 116 and the magnetic suction base 1121. The other end of the second connecting rod 11222 is provided with an external thread, and the magnetic field confinement housing 116 is provided with a second threaded hole. The second connecting rod 11222 is inserted into the second threaded hole and is threadedly connected to the magnetic field confinement housing 116. The magnetic field confinement housing 116 can rotate relative to the second connecting rod 11222. By rotating the second connecting rod 11222 or the magnetic field confinement housing 116, the angle and position of the electromagnetic coil 113 relative to the structure to be measured 5 can be changed to improve the applicability of the magnetic field force device 1.

[0035] The present embodiment also provides a profile detection system, which includes the above-mentioned magnetic field force application device 1, a fixture frame 2, a profile detection device 3 and an industrial control device 4, wherein the fixture frame 2 is used to fix the structure to be tested 5. The profile detection device 3 is arranged on one side of the fixture frame 2, and is used to scan the coordinate information of the profile of the structure to be tested 5. The magnetic field force application device 1 is located at a designated position on the fixture frame 2, and the designated position is adjacent to the target force application point of the structure to be tested 5, and there is a gap between the designated position and the target force application point. The pressure pad 123 of the magnetic field force application device 1 is in contact with the surface of the target force application point of the structure to be tested 5, and is used to apply a pressing force to the structure to be tested 5. The industrial control device 4 is arranged on one side of the tooling frame 2, and is connected to the profile detection device 3 in communication, and is connected to the magnetic field force device 1 in communication, and is used to calculate the profile deviation detection result according to the coordinate information of the profile of the structure 5 to be tested, and adjust the magnitude of the clamping force applied by the magnetic field force device 1 to the structure 5 to be tested according to the profile deviation detection result. By changing the magnitude of the current output by the current controller 115 of the magnetic field force device 1, the magnitude of the magnetic field can be changed, thereby changing the magnitude of the clamping force, so as to achieve the purpose of quickly and accurately detecting the profile deviation of the structure 5 to be tested.

[0036] In this embodiment, the industrial control device 4 uses a computer installed with industrial control software, and the design digital models of the tooling frame 2 and the structure to be tested 5 are stored in the industrial control software.

[0037] Furthermore, the tooling frame 2 includes a frame 21, an inner cardboard 22 and an outer cardboard 23. The frame 21 is arranged in a U-shaped shape. A plurality of inner cardboards 22 and outer cardboards 23 are arranged. A corresponding number of slots for the inner cardboards 22 and outer cardboards 23 are provided at the top and bottom of the frame 21. A plurality of inner cardboards 22 and outer cardboards 23 are plugged and matched with the frame 21 through the slots, so that the inner cardboards 22 and outer cardboards 23 can be quickly disassembled. A plurality of fixing blocks 8 are fixed on both sides of the frame 21. The fixing blocks 8 are provided with ear holes. The ear holes are used to position the structure 5 to be tested through pins 9. The pins 9 penetrate the ear holes and the structure 5 to be tested. The pins 9 are tightly matched with the fixing blocks 8 and the structure 5 to be tested.

[0038] Furthermore, the profile detection device 3 includes a laser radar 31, a target seat 32 and a target ball 33. A positioning hole is provided on the profile frame 21. The target seat 32 is plugged into the positioning hole. The target ball 33 is fixed on the target seat 32. The laser radar 31 and the target ball 33 are separately arranged. The laser radar 31 is used to emit laser to the target ball 33 and receive the laser reflected by the target ball 33 to obtain the actual coordinate information of the center point of the target ball 33. The theoretical coordinate information of the positioning hole is preset in advance in the industrial control device 4. The theoretical coordinate information is used to indicate the coordinates of the positioning hole when the tooling frame 2 is in a horizontal state. The industrial control device 4 is used to obtain the position deviation information of the positioning hole according to the actual coordinate information and the preset theoretical coordinate information. The position deviation information of the positioning hole is used to indicate the horizontal state of the tooling frame 2.

[0039] In addition, a height-adjustable foot 10 is installed at the bottom of the jig 21. Before detection, the height of the foot 10 of the jig 21 needs to be adjusted, and the laser radar 31 is used to detect the actual position of the positioning hole, so that the deviation between the actual position of the positioning hole and the theoretical position is within a reasonable range, thereby avoiding the deformation of the jig 2 due to the uneven ground and reducing the influence of the jig 2's weight on the surface deviation detection result. After the jig 2 is adjusted to be level, the outer card plate 23 is taken out of the slot, the structure to be tested 5 is fixed on the fixed block 8 through the pin 9, and then the outer card plate 23 is returned to the slot to complete the positioning and fixation of the structure to be tested 5. The profile formed by the side edge of the inner card plate 22 facing the structure to be tested 5 is consistent with the inner profile of the fixed structure to be tested 5, and the profile formed by the side edge of the outer card plate 23 facing the structure to be tested 5 is consistent with the outer profile of the fixed structure to be tested 5. There is a gap between the inner clamping plate 22 and the outer clamping plate 23 and the fixed structure to be tested 5 .

[0040] After fixing the structure 5 to be tested, the inspector uses the laser radar 31 to scan the first coordinate information of the profile of the structure 5 to be tested in a free state, and transmits the first coordinate information to the industrial control device 4. The industrial control device 4 calculates the first profile deviation detection result according to the first coordinate information, and determines whether the first profile deviation detection result is within the preset tolerance requirement range. If the first profile deviation detection result is not within the preset tolerance requirement range, the inspector can arrange the magnetic field force device 1 according to the first profile deviation detection result. The magnetic base 1121 of the magnetic field generator 11 is magnetically attracted to the target force application point of the inner mold card 22 adjacent to the structure 5 to be tested, and the angle of the connecting rod 1122 is adjusted so that the electromagnetic coil 113 is located in the normal direction of the profile corresponding to the force application point of the structure 5 to be tested. The current magnitude and current direction of the electromagnetic coil 113 in the magnetic field generator 11 can be controlled by the current controller 115, so that it generates magnetic fields of different directions and magnitudes according to the principle of electromagnetic induction. The magnetic field constraint shell 116 constrains the direction of the magnetic field to reduce magnetic leakage on both sides. At the same time, the pressure generator 12 is placed at the target force application location of the structure 5 to be tested, so that the pressure generator 12 responds to the direction and strength of the magnetic field to generate a pressing force on the structure 5 to be tested. According to the principle of magnetic field interaction force, if the force application point needs to apply a force from the inner surface to the outer surface, the pressure generator 12 is arranged on the inner surface side of the structure 5 to be tested, otherwise it is arranged on the outer surface side of the structure 5 to be tested. The pressure pad 123 on the surface of the pressure generator 12 contacts the structure 5 to be tested.

[0041] When the electromagnetic coil 113 generates a magnetic field, the permanent magnet 122 in the pressure generator 12 generates a clamping force in response to the direction and strength of the magnetic field, and transmits the clamping force to the structure to be tested 5 through the pressure pad 123. The pressure sensor 125 obtains the pressure signal of the pressure pad 123 and transmits it to the signal generator 124. The signal generator 124 sends the pressure signal to the signal receiver 114 in the magnetic field generator 11, and the signal receiver 114 transmits the pressure signal to the current controller 115. The pressure signal includes information about the first pressure value. The current controller 115 controls the magnitude of the output current by comparing the first pressure value of the clamping force with the second pressure value preset in the industrial control device 4, thereby adjusting the magnitude of the clamping force, and obtains the surface deviation result by detecting the surface deviation of the structure to be tested 5 after the force is applied, until the surface deviation result is within the preset tolerance requirement range.

[0042] This embodiment also provides a profile detection method, which is applied to the profile detection system, and the method includes: S1: Acquire the first coordinate information of the profile of the structural component 5 to be tested in a free state, and calculate and obtain the first profile deviation detection result.

[0043] The laser radar 31 is used to scan the structure part 5 to be tested in a free state to obtain the first three-dimensional coordinate value of the point on the surface of the structure part 5 to be tested, and the surface deviation is evaluated by comparing the first three-dimensional coordinate value with the coordinate value of the midpoint of the preset theoretical numerical model, and a first surface deviation detection result is generated.

[0044] S2: Determine whether the first profile deviation detection result is within a preset tolerance requirement range.

[0045] S3: If the first profile deviation detection result is not within the preset tolerance requirement range, force is applied to the profile of the structural component 5 to be tested so that the profile of the structural component 5 to be tested is deformed by the force.

[0046] S4: obtaining the second coordinate information of the profile of the structural component 5 to be tested after the force is applied, and calculating the second profile deviation detection result.

[0047] The laser radar 31 is used to scan the structure part 5 to be tested after the force is applied, and the second three-dimensional coordinate value of the point on the surface of the structure part 5 to be tested is obtained. The surface deviation is evaluated by comparing the second three-dimensional coordinate value with the coordinate value of the midpoint of the preset theoretical numerical model, and a second surface deviation detection result is generated.

[0048] S5: adjusting the force applied to the profile of the structural component 5 to be tested until the second profile deviation detection result is within a preset tolerance requirement range.

[0049] By changing the current output by the current controller 115 of the magnetic field force device 1, the magnetic field size can be changed, thereby changing the clamping force size. The second profile deviation detection result generated after the clamping force changes changes accordingly until the second profile deviation detection result is within the preset tolerance requirement range.

[0050] This embodiment also provides a method for using the profile detection system, which is applied to the profile detection system described above and includes the following steps: P1: Level the fixture frame 2 to reduce the influence of the deadweight of the fixture frame 2 on the surface deviation detection result.

[0051] Insert the target base 32 into the positioning hole, control the laser radar 31 through the industrial control device 4 to detect the first actual coordinate information of the center point of the target ball 33, and then compare the first actual coordinate information with the preset theoretical coordinate information to obtain the first position deviation information of the positioning hole. If the first position deviation information is greater than the preset deviation value, adjust the height of the base 10, and then control the laser radar 31 through the industrial control device 4 to detect the second actual coordinate information of the center point of the target ball 33, and then compare the second actual coordinate information with the preset theoretical coordinate information to obtain the second position deviation information of the positioning hole, until the second position deviation information is within the preset horizontal tolerance range.

[0052] P2: Use the fixture frame 2 to fix the structural part 5 to be tested.

[0053] The outer card plate 23 is taken out from the slot, and the pin 9 is passed through the structure to be tested 5 and the ear hole to fix the structure to be tested 5 and the jig 21 together, and then the outer card plate 23 is returned to the slot to complete the positioning and fixing of the structure to be tested 5.

[0054] P3: The first coordinate information of the surface of the structural component 5 to be tested in a free state is obtained through the surface detection device 3, and the surface detection device 3 transmits the first coordinate information to the industrial control device 4. The industrial control device 4 calculates the first surface deviation detection result according to the first coordinate information, and determines whether the first surface deviation detection result is within the preset tolerance requirement range.

[0055] The laser radar 31 is controlled by the industrial control device 4 to scan the structural part 5 to be tested in a free state to obtain the third three-dimensional coordinate value of the point on the surface of the structural part 5 to be tested, and the third three-dimensional coordinate value is transmitted to the industrial control device 4. The industrial control device 4 evaluates the surface deviation by comparing the third three-dimensional coordinate value with the coordinate value of the midpoint of the theoretical digital model, generates a first surface deviation detection result, and determines whether the first surface deviation detection result is within the preset tolerance requirement range.

[0056] P4: If the first profile deviation detection result is not within the preset tolerance requirement range, the magnetic field generator 11 of the magnetic field force application device 1 is connected to the target force application location of the tooling frame 2 adjacent to the structural part 5 to be tested, and the pressure generator 12 of the magnetic field force application device 1 is placed at the target force application location of the structural part 5 to be tested, so that the pressure generator 12 responds to the direction and intensity of the magnetic field to generate a clamping force on the structural part 5 to be tested.

[0057] If the first profile deviation detection result is not within the preset tolerance requirement range, a pressure generator 12 is placed at the profile to be tested of the structural part 5 to be tested corresponding to the first profile deviation detection result, and the magnetic base 1121 is magnetically attracted to the inner mold clamping plate 22 close to the profile to be tested. By rotating the connecting rod 1122, the electromagnetic coil 113 is perpendicular to the normal direction of the profile where the force application point is located. There is a gap between the electromagnetic coil 113 and the structural part 5 to be tested. The first profile deviation detection result includes the profile deviation direction. According to the profile deviation direction, the pressure generator 12 is placed on the inner surface side or the outer surface side of the structural part 5 to be tested corresponding to the force application point.

[0058] P5: The second coordinate information of the surface of the structural component 5 to be tested after the force is applied is obtained through the surface detection device 3, and the surface detection device 3 transmits the second coordinate information to the industrial control device 4. The industrial control device 4 calculates the second surface deviation detection result according to the second coordinate information, and determines whether the second surface deviation detection result is within the preset tolerance requirement range.

[0059] The laser radar 31 is controlled by the industrial control device 4 to scan the structural part 5 to be tested after the force is applied, so as to obtain the fourth three-dimensional coordinate value of the point on the surface of the structural part 5 to be tested, and the fourth three-dimensional coordinate value is transmitted to the industrial control device 4. The industrial control device 4 evaluates the surface deviation by comparing the fourth three-dimensional coordinate value with the coordinate value of the midpoint of the theoretical digital model, generates a second surface deviation detection result, and determines whether the second surface deviation detection result is within the preset tolerance requirement range.

[0060] P6: If the second profile deviation detection result is not within the preset tolerance requirement range, the industrial control device 4 is used to control the magnetic field force device 1 to change the magnitude of the clamping force applied to the structural component 5 to be tested until the second profile deviation detection result is within the preset tolerance requirement range.

[0061] If the second profile deviation detection result is not within the preset tolerance requirement range, a second pressure value is preset in the industrial control device 4, and the industrial control device 4 is used to control the current controller 115 to output current. The current is converted into a magnetic field through the electromagnetic coil 113, and the permanent magnet 122 in the pressure generator 12 responds to the direction and strength of the magnetic field so that the pressure pad 123 applies a clamping force to the profile of the structural component 5 to be tested. The pressure sensor 125 obtains the pressure signal of the pressure pad 123 and transmits the pressure signal to the current controller 115. The current controller 115 controls the output current according to the first pressure value in the pressure signal and the preset second pressure value to adjust the size of the first pressure value until the second profile deviation detection result is within the preset tolerance requirement range. At this time, the industrial control device 4 records the size of the clamping force.

[0062] Then, force detection is performed on the remaining positions of the structural part to be tested. If the clamping force meets the following requirements: the maximum external force that can be applied at each force application position is not greater than 45N, and is related to the arrangement spacing between each force application position. Specifically, when the arrangement spacing C of each force application position is not less than 300mm, the maximum external force Fmax at each force application position is 45N; when the arrangement spacing C of each force application position is less than 300mm, the maximum external force Fmax (unit: N) at each force application position and the arrangement spacing C (unit: mm) of each force application position meet: Fmax=0.15×C, then the structural part to be tested is accepted.

[0063] Beneficial effects of the present invention: 1. The present invention forms a magnetic field by setting a magnetic field generator 11, and sets a pressure generator 12. The pressure generator 12 includes a permanent magnet 122. The permanent magnet 122 can respond to the direction and strength of the magnetic flux lines in the magnetic field to generate a clamping force and apply the clamping force to the structure to be tested 5. The magnetic field generator 11 and the pressure generator 12 are separately set. The magnetic field generator 11 is connected to a card plate that fixes the structure to be tested 5. The pressure generator 12 is magnetically attracted to the structure to be tested 5 through the magnetic attraction effect between the permanent magnet 122 and the magnetic field generator 11. The size of the clamping force can be changed by changing the magnetic field size of the magnetic field generator 11. Since the pressure generator 12 is magnetically attracted to the structure to be tested 5, the pressure generator 12 can be moved to the position where force needs to be applied by closing the magnetic field generator 11, so that the pressure generator 12 is easy to move and the position adjustment is simple, thereby improving the efficiency and accuracy of the surface deviation detection of the structure to be tested 5.

[0064] 2. The present invention sets the magnetic field generator 11 and the pressure generator 12 separately, and uses the magnetic attraction principle between the magnetic field generator 11 and the pressure generator 12 to apply force to the structure to be measured 5. The magnetic field generator 11 is connected to the card plate that fixes the structure to be measured 5, and the pressure generator 12 is magnetically attracted to the structure to be measured 5. The pressure generator 12 can be moved by turning off the magnetic field generator 11. Surface detection usually uses lasers or optical sensors to measure the surface features of the object. The pressure generator 12 can be arranged on the inner surface side of the structure to be measured 5 to reduce the obstruction of the pressure generator 12 to the surface detection light beam, thereby ensuring the measurement accuracy.

[0065] 3. The present invention utilizes the magnetic attraction principle between the magnetic field generator 11 and the pressure generator 12 to apply force to the structure to be measured 5. The magnetic field generator 11 includes an electromagnetic coil 113 and a current controller 115. The current controller 115 is used to control the magnitude of the power supplied to the electromagnetic coil 113, thereby adjusting the magnitude and direction of the magnetic field, thereby quantitatively adjusting the magnitude and direction of the force, so that the pressure generator 12 can apply a variable clamping force to the structure to be measured 5, thereby improving the efficiency and accuracy of the surface deviation detection of the structure to be measured 5.

[0066] 4. The magnetic field generator 11 is magnetically attracted to the fixture frame 2 . The position of the magnetic field generator 11 is adjustable, and the position of the pressure generator 12 is also adjustable accordingly, which improves the applicability and flexibility of the magnetic field force applying device 1 .

[0067] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention described in this application. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. A magnetic field force applying device (1), characterized in that: The device comprises a magnetic field generator (11) and a pressure generator (12), wherein the magnetic field generator (11) and the pressure generator (12) are arranged separately, the magnetic field generator (11) is detachably connected to a tooling frame (2), the tooling frame (2) is used to fix a structure to be tested (5), the pressure generator (12) is arranged on the structure to be tested (5), the magnetic field generator (11) is used to generate a magnetic field, and the pressure generator (12) is used to generate a pressing force on the structure to be tested (5) in response to the direction and strength of the magnetic field; The magnetic field generator (11) comprises a connecting component (112), an electromagnetic coil (113) and a current controller (115); the connecting component (112) is detachably connected to the tooling frame (2); the electromagnetic coil (113) and the current controller (115) are both located on the connecting component (112); the current controller (115) is connected to the electromagnetic coil (113); the current controller (115) is used to energize the electromagnetic coil (113); the current controller (115) is also used to control the magnitude of the output current according to the first pressure value of the pressing force and a preset second pressure value, so as to adjust the magnitude of the first pressure value; The pressure generator (12) comprises a permanent magnet (122), a pressure pad (123) and a pressure sensor (125); the pressure pad (123) is connected to the permanent magnet (122), the pressure pad (123) is in contact with the surface of the structure to be tested (5), the pressure sensor (125) is connected to the pressure pad (123), the permanent magnet (122) is used to generate a pressing force on the pressure pad (123) in response to the direction and strength of the magnetic field, the pressure pad (123) is used to transmit the pressing force to the structure to be tested (5), and the pressure sensor (125) is used to obtain a pressure signal of the pressure pad (123) and transmit the pressure signal to the current controller (115), wherein the pressure signal comprises information of the first pressure value.

2. The magnetic field force applying device (1) according to claim 1, characterized in that: The magnetic field generator (11) further comprises a magnetic field confinement shell (116), wherein the magnetic field confinement shell (116) is fully enclosed and hollow, the magnetic field confinement shell (116) is rotatably connected to the connection assembly (112), the electromagnetic coil (113) and the current controller (115) are both connected to the inside of the magnetic field confinement shell (116), and the magnetic field confinement shell (116) is used to confine the direction of the magnetic field to reduce magnetic leakage.

3. The magnetic field force applying device (1) according to claim 2, characterized in that: The connecting assembly (112) comprises a magnetic base (1121) and a connecting rod (1122); the magnetic base (1121) is magnetically attracted to a tooling frame (2) that fixes a structure to be tested (5); the connecting rod (1122) comprises a first connecting rod (11221) and a second connecting rod (11222); one end of the first connecting rod (11221) is rotatably connected to the magnetic base (1121); the other end of the first connecting rod (11221) is rotatably connected to one end of the second connecting rod (11222); and the other end of the second connecting rod (11222) is rotatably connected to the magnetic field confinement shell (116).

4. The magnetic field force applying device (1) according to claim 2, characterized in that: The magnetic field generator (11) further comprises a signal receiver (114), wherein the signal receiver (114) is connected to the magnetic field confinement shell (116), wherein the signal receiver (114) is connected to the current controller (115), wherein the signal receiver (114) is used to receive the pressure signal and send the pressure signal to the current controller (115), and wherein the pressure generator (12) further comprises a signal generator (124), wherein the signal generator (124) is connected to the pressure sensor (125), wherein the pressure sensor (125) sends the pressure signal to the signal generator (124), and wherein the signal generator (124) is used to receive the pressure signal and send the pressure signal to the signal receiver (114).

5. A profile detection system, characterized in that: It comprises the magnetic field force applying device (1), the tooling frame (2), the profile detection device (3) and the industrial control device (4) as claimed in any one of claims 1 to 4, The tooling frame (2) is used to fix the structure to be tested (5); The profile detection device (3) is arranged on one side of the tooling frame (2) and is used to obtain coordinate information of the profile of the structural component (5) to be tested; The magnetic field force applying device (1) is located at a designated position on the fixture frame (2), the designated position being adjacent to a target force applying location of the structure to be tested (5), and there being a gap between the designated position and the target force applying location; the pressure pad (123) of the magnetic field force applying device (1) is in contact with the surface of the target force applying location of the structure to be tested (5), and is used to apply a pressing force to the structure to be tested (5); The industrial control device (4) is arranged on one side of the tooling frame (2), the industrial control device (4) is connected in communication with the profile detection device (3), the industrial control device (4) is connected in communication with the magnetic field force application device (1), and the industrial control device (4) is used to calculate the profile deviation detection result based on the coordinate information of the profile, and adjust the size of the pressing force applied by the magnetic field force application device (1) to the structure (5) to be tested based on the profile deviation detection result.

6. The surface detection system according to claim 5, characterized in that: The jig frame (2) comprises a jig frame (21), an inner jig plate (22) and an outer jig plate (23); the jig frame (21) is provided with a slot for the inner jig plate (22) and the outer jig plate (23) to be plugged in; the inner jig plate (22) and the outer jig plate (23) are plugged in and matched with the jig frame (21) through the slot; the jig frame (21) is provided with a plurality of ear holes, and the ear holes are used to fix the structure (5) to be tested through pins (9).

7. The surface detection system according to claim 5, characterized in that: The mold surface detection device (3) comprises a laser radar (31), a target seat (32) and a target ball (33); the target seat (32) is connected to the mold frame (21); the target ball (33) is connected to the target seat (32); the laser radar (31) and the target ball (33) are separately arranged and are used to scan the coordinate information of the mold surface of the structural part (5) to be tested.

8. The surface detection system according to claim 7, characterized in that: The jig (21) is provided with a positioning hole, the target seat (32) is plugged into and matched with the positioning hole, the laser radar (31) is used to emit laser light to the target ball (33) and receive laser light reflected by the target ball (33) to obtain actual coordinate information of the center point of the target ball (33), and the industrial control device (4) is used to obtain position deviation information of the positioning hole based on comparison between the actual coordinate information and preset theoretical coordinate information, and the position deviation information of the positioning hole is used to indicate the horizontal state of the jig frame (2).

9. A surface detection method, characterized in that: The method applied to the profile detection system according to any one of claims 5 to 8 above comprises: Acquiring first coordinate information of a profile of a structural component (5) to be tested in a free state, and calculating a first profile deviation detection result; Determining whether the first profile deviation detection result is within a preset tolerance requirement range; If the first profile deviation detection result is not within the preset tolerance requirement range, a force is applied to the profile of the structural component (5) to be tested so that the profile of the structural component (5) to be tested is deformed by the force; Acquiring second coordinate information of the profile of the structural component (5) to be tested after the force is applied, and calculating and obtaining a second profile deviation detection result; The force applied to the profile of the structural component (5) to be tested is adjusted until the second profile deviation detection result is within a preset tolerance requirement range.

10. A method for using a profile detection system, characterized in that: The surface detection system according to any one of claims 5 to 8 above, wherein the method of use comprises the following steps: Leveling the tooling frame (2) to reduce the influence of the deadweight of the tooling frame (2) on the surface deviation detection result; Using the fixture frame (2) to fix the structure to be tested (5); The first coordinate information of the profile of the structural component (5) to be tested in a free state is obtained by a profile detection device (3), the profile detection device (3) transmits the first coordinate information to the industrial control device (4), the industrial control device (4) calculates a first profile deviation detection result based on the first coordinate information, and determines whether the first profile deviation detection result is within a preset tolerance requirement range; If the first profile deviation detection result is not within a preset tolerance requirement range, the magnetic field generator (11) of the magnetic field force application device (1) is connected to a target force application location of the tooling frame (2) adjacent to the structure to be tested (5), and the pressure generator (12) of the magnetic field force application device (1) is placed at the target force application location of the structure to be tested (5), so that the pressure generator (12) responds to the direction and intensity of the magnetic field to generate a pressing force on the structure to be tested (5); The second coordinate information of the profile of the structural component (5) to be tested after the force is applied is obtained by the profile detection device (3), the profile detection device (3) transmits the second coordinate information to the industrial control device (4), the industrial control device (4) calculates a second profile deviation detection result based on the second coordinate information, and determines whether the second profile deviation detection result is within a preset tolerance requirement range; If the second profile deviation detection result is not within the preset tolerance requirement range, the industrial control device (4) is used to control the magnetic field force application device (1) to change the magnitude of the clamping force applied to the structure to be tested (5) until the second profile deviation detection result is within the preset tolerance requirement range.

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