Automatic measurement system and method of physical quantities of a body of revolution

Abstract

This invention relates to the field of physical quantity measurement technology for rotating bodies, specifically disclosing an automatic physical quantity measurement system and method for rotating bodies. The system includes a frame, a conveyor line mounted on the frame, a tray on the conveyor line for supporting the rotating body, a mass centroid measuring mechanism mounted on the frame and located below the conveyor line, and a length coaxiality measuring mechanism mounted on the frame. The mass centroid measuring mechanism slides with the frame along the Z-axis, and the length coaxiality measuring mechanism and the mass centroid measuring mechanism slide with the frame along the X-axis. The tray has a through slot for the mass centroid measuring mechanism and the length coaxiality measuring mechanism to pass through. This invention effectively solves the problem of high safety risks caused by frequent lifting, hoisting, and transfer of rotating bodies during physical quantity measurement by manual labor / robotic arms, while reducing hoisting and handling time and improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of physical quantity measurement technology for rotating bodies, and more specifically, to an automatic physical quantity measurement system and method for rotating bodies. Background Technology

[0002] After the rotating body is assembled, in order to ensure that its performance meets the design requirements, it is necessary to measure its physical quantities (including mass, center of mass, length, coaxiality, etc.).

[0003] Traditional measurement method one: Physical quantity measuring equipment consists of single machines (such as mass centroid measuring equipment, length measuring equipment, and coaxiality measuring equipment), each placed in a fixed location within the factory area. When the rotating body is assembled and needs testing, the operator manually places the rotating body on a trolley, pushes it near the measuring equipment, and then manually lifts or uses hoisting tools to place the rotating body onto the respective measuring equipment. After measurement, the trolley is returned, and finally, the machine is pushed back to its workstation to continue subsequent work.

[0004] Traditional measurement method two: Individual physical quantity measuring devices (such as mass centroid measuring devices, length measuring devices, and coaxiality measuring devices) are placed next to the assembly line. When the rotating body needs to be tested after assembly, a six-axis robot or gantry robot is used to lift the rotating body onto the respective measuring devices. After measurement, it is lifted back onto the assembly line to continue subsequent work.

[0005] Traditional measurement methods have problems: 1. The number of individual measuring devices is large and they are scattered, and transportation is done manually, which is labor-intensive; 2. Manual transfer and lifting are time-consuming, have low testing efficiency, and pose a high risk of the rotating body falling. 3. Six-axis robots or gantry robots frequently lift rotating bodies between measuring equipment and assembly lines, which poses a high risk of the rotating bodies falling and results in low testing efficiency. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an automatic physical quantity measurement system and method for rotating bodies, which effectively solves the problem of high safety risk of rotating bodies falling due to frequent lifting, hoisting and transfer by manual / robotic arms during the physical quantity measurement process, while reducing hoisting and handling time and improving production efficiency.

[0007] The solution adopted by this invention to solve the technical problem is: on the one hand: This invention provides an automatic physical quantity measurement system for a rotating body, including a frame, a conveyor line mounted on the frame, a tray disposed on the conveyor line for supporting the rotating body, a mass centroid measuring mechanism mounted on the frame and located below the conveyor line, and a length coaxiality measuring mechanism mounted on the frame; the mass centroid measuring mechanism slides with the frame along the Z-axis, and the length coaxiality measuring mechanism and the mass centroid measuring mechanism slide with the frame along the X-axis; the tray is provided with a through groove for the mass centroid measuring mechanism and the length coaxiality measuring mechanism to pass through.

[0008] In some possible implementations, a mounting base plate is provided within the frame, and an X-axis drive mechanism is mounted on the mounting base plate and used to control the movement of the mass centroid measuring mechanism along the X-axis direction.

[0009] In some possible implementations, the mass center of mass measuring mechanism includes a movable plate that is slidably mounted on a mounting base plate along the X-axis and is connected to an X-axis drive mechanism, and a weighing component that is sequentially arranged on the movable plate along the X-axis and is used to weigh the rotating body; the weighing component and the movable plate are slidably engaged along the Z-axis.

[0010] In some possible implementations, the length coaxiality measuring mechanism includes a mounting plate mounted on a frame, a linear module mounted on the mounting plate, a grating ruler and a profile scanner mounted on the linear module and driven by the linear module to move along the X-axis, and a coaxiality measuring support assembly sequentially arranged on a moving plate along the X-axis; the weighing assembly and the coaxiality measuring support assembly are staggered and their axes are on the same plane. The coaxiality measurement support assembly and the moving plate slide together along the Z-axis.

[0011] In some possible implementations, the weighing assembly includes a weighing support block located above a moving plate for supporting the rotating body during weighing, a weighing sensor disposed at the bottom of the weighing support block, a weighing support for mounting the weighing sensor, and a Z-axis weighing lifting component mounted on the moving plate and controlling the weighing support to move up and down along the Z-axis direction. The coaxiality measurement support assembly includes a coaxiality support block for supporting the rotating body during length and coaxiality measurements and disposed above the moving plate, and a Z-axis coaxial lifting component mounted on the moving plate for controlling the coaxiality support block to rise and fall along the Z-axis direction.

[0012] In some possible implementations, the Z-axis weighing lifting component has the same structure as the Z-axis coaxial lifting component, including a lead screw arranged along the Z-axis direction and connected at one end to the weighing support or coaxiality support block, a hollow reduction platform screwed to the lead screw and mounted on the moving plate, a drive motor drivenly connected to the hollow reduction platform and mounted on the moving plate, and a guide shaft mounted on the bottom of the weighing support or coaxiality support block and arranged parallel to the lead screw; the guide shaft is slidably engaged with the moving plate.

[0013] In some possible implementations, the top surface of the weighing support has a V-shaped opening structure, and two sets of support rollers are arranged within the V-shaped opening structure; the axes of the two sets of support rollers form a V shape, and the axes of the support rollers are on the same Z-axis plane; The top surface of the coaxiality support block has an arc-shaped structure; at least two sets of rollers are provided on the arc-shaped structure, and the axis of the rollers is set along the X-axis direction.

[0014] In some possible implementations, a blocking mechanism, a photoelectric sensor, and a clamping mechanism are provided on the conveyor line; Once the photoelectric sensor detects that the pallet has moved into position, the control system stops the conveyor line from rotating, the blocking mechanism prevents the pallet from moving further, and the clamping mechanism clamps and fixes the pallet in place.

[0015] In some possible implementations, the frame includes a main frame, adjustable feet mounted at the bottom of the main frame, casters mounted at the bottom of the adjustable feet, a control cabinet mounted on the main frame, and an audible and visual warning device.

[0016] on the other hand: This invention also provides an automatic measurement method for physical quantities of a rotating body. The automatic measurement system for physical quantities of a rotating body described above specifically includes the following steps: Step S1: The conveyor line transports the rotating body on the pallet. When the pallet is in place, the conveyor line stops working and fixes the pallet. Step S2: Control the mass center of mass measuring mechanism to move along the X-axis direction, so that the weighing component in the mass center of mass measuring mechanism is in the mass center of mass measuring position. Control the mass center of mass measuring mechanism to rise along the Z-axis direction, and support and lift the rotating body. Read the readings m1 and m2 of the two sets of weighing sensors in the mass center of mass measuring mechanism; calculate the total mass M of the rotating body, M=m1+m2. Step S3: Use a length coaxiality measuring mechanism to measure the length of the rotating body and the distance between the center of mass of the rotating body and the reference of the automatic physical quantity measurement system; combine the readings of the weighing sensor to calculate the center of mass of the rotating body; L X =m1A / M+(BC); in, L XThis is the location of the center of mass of the body of revolution; A is the distance between the two sets of weighing support blocks; B is the distance between the weighing sensor m2 and the reference of the automatic physical quantity measurement system; C is the distance between the center of mass of the rotating body and the reference of the automatic physical quantity measurement system; Step S4: Control the mass center of mass measuring mechanism to descend along the Z-axis direction so that the rotating body is supported on the tray. Control the coaxiality measuring support assembly to move along the X-axis direction so that the coaxiality measuring support assembly is in the length coaxiality measuring position, and support and lift the rotating body. Perform coaxiality measurement of the rotating body through the length coaxiality measuring mechanism.

[0017] In some possible implementations, when performing coaxiality measurement, the profile scanner is controlled to move along the X-axis, so that the profile scanner moves to the position of each section of the rotating body, the readings of the profile scanner are recorded, the center of each section is fitted, and the coaxiality of the rotating body is calculated.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention effectively achieves online measurement of the physical quantities of a rotating body through the cooperation of a tray, a mass center of mass measuring mechanism, and a length coaxiality measuring mechanism. Compared with the prior art, the rotating body does not need to be transported or lifted during the entire measurement process, which greatly improves work efficiency and avoids the situation where the rotating body falls or is damaged due to transport or lifting. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structural relationship of the rotating body in this invention; Figure 2 This is a schematic diagram of the structure of the frame and conveyor line in this invention; Figure 3 This is a schematic diagram of the mass centroid measuring mechanism, mounting base plate, X-axis drive mechanism, and coaxiality measuring support assembly in this invention. Figure 4 for Figure 3 Side view; Figure 5 for Figure 3 Top view; Figure 6 This is a schematic diagram of the structure of the mounting plate, linear module, grating ruler, and contour scanner in this invention; in: 1. Frame; 11. Main frame; 12. Adjustable feet; 13. Casters; 14. Control cabinet; 15. Audible and visual warning device; 2. Conveyor line; 21. Blocking mechanism; 22. Photoelectric sensor; 23. Pressing mechanism; 3. Tray; 31. Through groove; 4. Mass centroid measurement mechanism; 41. Moving plate; 42. Weighing assembly; 421. Weighing support block; 422. Weighing sensor; 423. Weighing support; 424. Z-axis weighing lifting component; 4241. Lead screw; 4242. Hollow reduction gear platform; 4243. Drive motor; 4244. Guide shaft; 5. Length coaxiality measuring mechanism; 51. Mounting plate; 52. Linear module; 53. Grating ruler; 54. Contour scanner; 55. Coaxiality measurement support assembly; 551. Coaxiality support block; 552. Z-axis coaxial lifting component; 6. Install the base plate; 7. X-axis drive mechanism; 10. Rotating body. Detailed Implementation

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] The present invention will now be described in detail.

[0022] Example 1: like Figures 1-6As shown, an automatic physical quantity measurement system for a rotating body 10 includes a frame 1 that is connected to an automatic assembly line, a conveyor line 2 mounted on the frame 1, a tray 3 mounted on the conveyor line 2 for supporting the rotating body 10, a mass centroid measuring mechanism 4 mounted on the frame 1 and located below the conveyor line 2, and a length coaxiality measuring mechanism 5 mounted on the frame 1. The mass centroid measuring mechanism 4 is slidably engaged with the frame 1 along the Z-axis, and the length coaxiality measuring mechanism 5 and the mass centroid measuring mechanism 4 are slidably engaged with the frame 1 along the X-axis. The tray 3 is provided with a through groove 31 for the mass centroid measuring mechanism 4 and the length coaxiality measuring mechanism 5 to pass through. Specifically, there are two sets of support points on the rotating body 10. By setting a through groove 31 on the tray 3 and controlling the mass center of mass measuring mechanism 4 to move along the X-axis, the mass center of mass measuring mechanism 4 can support the support points on the rotating body 10 after it has moved into place, thereby achieving weighing. After weighing, the length and coaxiality of each section of the rotating body 10 will be measured by the length coaxiality measuring mechanism 5. The mass center of the rotating body 10 will be calculated by using the parameters obtained from the length and weighing, as well as the distance between the rotating body 10 and the reference of this system. Compared with the prior art, the present invention does not require the transportation and lifting of the rotating body 10 when measuring the physical quantities of the rotating body 10, which greatly improves the measurement efficiency and avoids the risk of the rotating body 10 falling due to transportation and lifting. The through groove 31 is set corresponding to the two sets of support points of the rotating body 10.

[0023] In some possible implementations, in order to effectively control the movement of the mass center of mass measuring mechanism along the X-axis, a mounting base plate 6 is provided in the frame 1 to slide with the mass center of mass measuring mechanism 4 along the X-axis, and an X-axis drive mechanism 7 is mounted on the mounting base plate 6 and used to control the movement of the mass center of mass measuring mechanism 4 along the X-axis; the mounting base plate 6 is fixed in the frame. Specifically, a slide rail is provided on the mounting base plate 6 along the X-axis direction, and the mass center of mass measuring mechanism 4 is mounted on the mounting base plate 6 and slides in cooperation with the slide rail along the X-axis direction; the X-axis drive mechanism 7 can be assembled with the mass center of mass measuring mechanism 4 using existing linear drive devices such as electric actuators and lead screws 4241 pairs; thereby controlling the movement of the mass center of mass measuring mechanism 4 along the X-axis direction to effectively support the rotating body 10.

[0024] In some possible implementations, in order to effectively measure the mass of the rotating body 10 using the mass center of mass measuring mechanism 4, and to measure the center of mass in conjunction with the length coaxiality measuring mechanism 5; the mass center of mass measuring mechanism 4 includes a movable plate 41 slidably mounted on the mounting base plate 6 along the X-axis and connected to the X-axis drive mechanism 7, and a weighing component 42 sequentially arranged on the movable plate 41 along the X-axis for weighing the rotating body 10; the weighing component 42 and the movable plate 41 are slidably engaged along the Z-axis. Furthermore, the movable plate 41 is mounted on the mounting base plate 6 and slides with the slide rail. The movable plate 41 is connected to the linear drive device to control the movement of the movable plate 41 along the X-axis. Two sets of weighing components 42 are mounted on the movable plate 41. During weighing, the two sets of weighing components 42 pass through the through slot 31 on the tray 3 and contact the support point of the rotating body 10, lifting the rotating body 10 off the tray 3 to achieve weighing. The total weight M of the rotating body 10 can be obtained by adding the mass data m1 and m2 obtained by the two sets of weighing components 42.

[0025] In some possible implementations, in order to effectively measure length and coaxiality using the length coaxiality measuring mechanism 5, and to measure the center of mass of the rotating body 10 in conjunction with the mass center of mass measuring mechanism 4, the length coaxiality measuring mechanism 5 includes a mounting plate 51 mounted on the frame 1, a linear module 52 mounted on the mounting plate 51, a grating ruler 53 and a contour scanner 54 mounted on the linear module 52 and driven by the linear module 52 to move along the X-axis, and a coaxiality measuring support assembly 55 sequentially arranged on the moving plate 41 along the X-axis; the weighing assembly 42 and the coaxiality measuring support assembly 55 are staggered and their axes are on the same plane; the grating ruler 53 and the contour scanner 54 will move synchronously; The coaxiality measurement support component 55 and the movable plate 41 slide together along the Z-axis direction; Specifically, after weighing, the weighing component 42 descends along the Z-axis, causing the rotating body 10 to fall onto the tray 3, which no longer supports the rotating body 10. Then, the linear drive device controls the moving plate 41 to move along the X-axis, so that the coaxiality measuring support component 55 is located directly below the support point of the rotating body 10. Then, the coaxiality measuring support component 55 is controlled to rise along the Z-axis, passing through the through slot 31 to support and lift the rotating body 10. Finally, the length of the rotating body 10 is measured by the cooperation of the grating ruler 53 and the contour scanner 54. During length measurement, when the contour scanner 54 scans the contour of the rotating body 10, the reading of the grating ruler 53 is recorded as L0. The contour scanner 54 continues to move. When the contour scanner 54 scans the contour of the rotating body 10 and it disappears, the reading of the grating ruler 53 is recorded as L1. The movement is stopped and the device is reset. The length of the rotating body 10 is calculated as L = L1 - L0. During coaxiality measurement, the linear module 52 is controlled to move along the X-axis and move to each section of the rotating body 10, the readings of the contour scanner 54 are recorded and the center of each section is fitted, thereby calculating the coaxiality of the rotating body 10; During the measurement of the center of mass, since the distance between the two sets of weighing components 42 and the distance between the weighing support with a mass of m2 and the equipment reference are known, the distance between the reference of the rotating body 10 and the reference of this system can be measured by the length coaxiality measuring mechanism 5, and the center of mass of the rotating body 10 can be calculated.

[0026] In some possible implementations, the weighing assembly 42 includes a weighing support block 421 located above the moving plate 41 for supporting the rotating body 10 during weighing, a weighing sensor 422 disposed at the bottom of the weighing support block 421, a weighing support 423 for mounting the weighing sensor 422, and a Z-axis weighing lifting component 424 mounted on the moving plate 41 and controlling the weighing support 423 to rise and fall along the Z-axis direction. The coaxiality measurement support assembly 55 includes a coaxiality support block 551, which supports the rotating body 10 during length and coaxiality measurement and is disposed above the moving plate 41, and a Z-axis coaxial lifting member 552, which is mounted on the moving plate 41 and is used to control the coaxiality support block 551 to rise and fall along the Z-axis direction. The weighing support block 421 is used for contact and abutment of the rotating body 10. The weighing sensor 422 is installed on the weighing support 423 and located at the bottom of the weighing support block 421. Under the drive of the Z-axis weighing lifting component 424, the weighing support 423 will be lifted and lowered along the Z-axis direction, thereby driving the weighing support block 421 and the weighing sensor 422 to be lifted and lowered. During weighing, when the weighing support block 421 is controlled by the weighing lifting component 424 to lower the rotating body 10 from the tray 3 and the rotating body 10 is simultaneously on the horizontal turntable, the control is stopped. At this time, the data on the two sets of weighing sensors 422 are read to obtain m1 and m2. Then the total weight of the rotating body 10 can be calculated as M = m1 + m2. When measuring the position of the center of mass of the rotating body 10, after weighing, the distance between the center of mass reference of the rotating body 10 and the reference of this system should be measured by the length coaxiality measuring mechanism 5, and then the position of the center of mass of the rotating body 10 can be calculated. Specifically, during length measurement, the X-axis drive mechanism 7 first controls the moving block to move so that the coaxiality support block 551 is directly below the support point of the rotating body 10. Then, the Z-axis coaxial lifting component 552 controls the coaxiality support block 551 to rise along the Z-axis and pass through the through slot 31. The coaxiality support block 551 supports the rotating body 10 and lifts it to the designated position. Then, the contour scanner 54 and the grating ruler 53 are controlled to move. When the contour scanner 54 scans the contour of the rotating body, the reading of the grating ruler 53 is recorded as L0. The movement continues. When the contour scanner 54 scans the contour of the rotating body and it disappears, the reading of the grating ruler 53 is recorded as L1. The movement stops and the body is reset. The length of the rotating body L = L1 - L0 is calculated. When measuring the coaxiality of the rotating body 10, the Z-axis weighing lifting component 424 controls the weighing support 423 to descend, so that the rotating body 10 falls back onto the tray 3. When measuring coaxiality, the profile scanner 54 is controlled to move along the X-axis, so that the profile scanner 54 moves to the position of each section of the rotating body 10, the readings of the profile scanner 54 are recorded, the center of each section is fitted, and the coaxiality of the rotating body 10 is calculated.

[0027] In some possible implementations, to effectively control the lifting and lowering of the weighing support 423 or the coaxiality support block 551 along the Z-axis, the Z-axis weighing lifting component 424 has the same structure as the Z-axis coaxial lifting component 552, including a lead screw 4241 arranged along the Z-axis and connected at one end to the weighing support 423 or the coaxiality support block 551, a hollow reduction platform 4242 screwed to the lead screw 4241 and mounted on the moving plate 41, a drive motor 4243 drivenly connected to the hollow reduction platform 4242 and mounted on the moving plate 41, and a guide shaft 4244 mounted at the bottom of the weighing support 423 or the coaxiality support block 551 and arranged parallel to the lead screw 4241; the guide shaft 4244 is slidably engaged with the moving plate 41. Specifically, taking the weighing support block 421 as an example, the bottom of the weighing support 423 is connected to the lead screw 4241 and the guide shaft 4244 respectively; the other end of the lead screw 4241 is connected to the hollow reduction platform 4242, which is provided with a nut screwed to the lead screw 4241. The drive motor 4243 controls the hollow reduction platform 4242 to drive the nut to rotate, thereby realizing the movement of the lead screw 4241 along the Z-axis; the guide shaft 4244 guides the movement direction of the weighing support 423; furthermore, there are two sets of guide shafts 4244, located on both sides of the lead screw 4241; Furthermore, the X-axis drive mechanism has the same structure as the Z-axis weighing lifting component 424 and the Z-axis coaxial lifting component 552. The lead screw in the X-axis drive mechanism is arranged along the X-axis direction and is hinged to the moving plate 41.

[0028] In some possible implementations, in order to effectively support the rotating body 10 and lift the top surface of the weighing support 423 in a V-shaped opening structure, two sets of support rollers are provided in the V-shaped opening structure; the axes of the two sets of support rollers form a V shape, and the axes of the support rollers are on the same Z-axis plane. The top surface of the coaxiality support block 551 has an arc-shaped structure; at least two sets of rollers are provided on the arc-shaped structure, and the axis of the rollers is arranged along the X-axis direction.

[0029] In some possible implementations, a blocking mechanism 21, a photoelectric sensor 22, and a pressing mechanism 23 are provided on the conveyor line 2; When the photoelectric sensor 22 detects that the tray 3 has moved into position, the control system controls the conveyor line 2 to stop rotating, the blocking mechanism 21 blocks the tray 3 from continuing to move, and the clamping mechanism 23 clamps and fixes the tray 3. Specifically, the blocking mechanism 21 is set at the input end of the conveyor line 2; when the photoelectric sensor 22 detects that the tray 3 is in place, the conveyor line 2 stops rotating, and the clamping mechanism 23 clamps and fixes the tray 3, so that the tray 3 no longer moves.

[0030] In some possible implementations, the frame 1 includes a main frame 11, adjustable feet 12 mounted at the bottom of the main frame 11, casters 13 mounted at the bottom of the adjustable feet 12, a control cabinet 14 mounted on the main frame 11, and an audible and visual warning device 15; this configuration enables the movement and leveling of the system; the control cabinet 14 is configured for human-machine interaction, and the audible and visual warning device 15 on the top is used for audible and visual reminders.

[0031] The control cabinet 14 is connected to the photoelectric sensor 22, the blocking mechanism 21, the clamping mechanism 23, the length coaxiality measuring mechanism 5, and the mass center of gravity measuring mechanism 4 to realize online measurement and control; In this invention, the conveyor line 2 consists of two sets of roller conveyor lines; a channel is formed between the two sets of roller conveyor lines for the weighing support 423 and the coaxiality support block 551 to pass through, and the through groove 31 provided on the pallet 3 is connected to the channel; since the weighing support 423 and the coaxiality support block 551 can move in the Z-axis direction, no interference will occur when the pallet 3 and the rotating body 10 are conveyed.

[0032] Example 2: An automatic measurement method for physical quantities of a rotating body 10, according to the automatic measurement system for physical quantities of a rotating body 10 described in Embodiment 1, specifically includes the following steps: Step S1: The conveyor line 2 conveys the rotating body 10 on the tray 3. When the photoelectric sensor 22 senses that the tray 3 has moved into place, the control system controls the conveyor line 2 to stop rotating, the blocking mechanism 21 blocks the tray 3 from continuing to move, and the clamping mechanism 23 clamps and fixes the tray 3. Step S2: The X-axis drive mechanism 7 controls the mass center of mass measuring mechanism 4 to move along the X-axis direction, so that the weighing support 423 is directly below the support point on the rotating body 10; then the Z-axis weighing lifting component 424 controls the weighing support 423 to rise along the Z-axis direction, pass through the through slot 31, support the rotating body 10 and lift it up, and read the readings m1 and m2 of the two sets of weighing sensors 422 in the mass center of mass measuring mechanism 4; calculate the total mass M of the rotating body 10, M=m1+m2; Step S3: Use the length coaxiality measuring mechanism 5 to measure the length of the rotating body 10 and the distance between the center of mass of the rotating body 10 and the reference of this system; combine the reading m1 of the weighing sensor 422 to calculate the center of mass of the rotating body 10; L X =m1A / M+(BC); in, L X This is the location of the center of mass of the rotating body 10; A is the distance between the two sets of weighing support blocks 421; B is the distance between the weighing sensor m2 and the reference of the automatic physical quantity measurement system; C is the distance between the center of mass of the rotating body and the reference of the automatic physical quantity measurement system.

[0033] Step S4: Control the weighing support 423 to descend along the Z-axis direction, so that the rotating body 10 is supported on the pallet 3. Control the coaxiality support block 551 to move along the X-axis direction through the X-axis drive mechanism 7 so that the coaxiality support block 551 is directly below the support point on the rotating body 10. Then, control the coaxiality support block 551 to rise along the Z-axis direction through the Z-axis coaxial lifting component 552 to support and lift the rotating body 10. Perform coaxiality measurement through the grating ruler 53 and contour scanning. In this invention, length measurement can be performed either in step S3 when measuring the distance between the centroid reference of the rotating body 10 and the reference of this system, or in step S4 when measuring coaxiality. During measurement, the contour scanner 54 on the linear module 52 moves. When the contour scanner 54 scans the contour of the rotating body, the reading of the grating ruler 53 is recorded as L0. The scanner continues to move. When the contour scanner 54 scans the contour of the rotating body and it disappears, the reading of the grating ruler 53 is recorded as L1. The scanner stops moving and resets. The length of the rotating body L = L1 - L0 is calculated. When measuring coaxiality, the profile scanner 54 is controlled to move along the X-axis, so that the profile scanner 54 moves to the position of each section of the rotating body 10, the readings of the profile scanner 54 are recorded, the center of each section is fitted, and the coaxiality of the rotating body 10 is calculated.

[0034] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A physical quantity automatic measuring system of a gyratory body, characterized by, The device includes a frame, a conveyor line mounted on the frame, a tray on the conveyor line for supporting a rotating body, a mass centroid measuring mechanism mounted on the frame and located below the conveyor line, and a length coaxiality measuring mechanism mounted on the frame. The mass centroid measuring mechanism slides with the frame along the Z-axis, and the length coaxiality measuring mechanism and the mass centroid measuring mechanism slide with the frame along the X-axis. The tray is provided with a through groove for the mass centroid measuring mechanism and the length coaxiality measuring mechanism to pass through.

2. The automatic measurement system for physical quantities of a rotating body according to claim 1, characterized in that, The frame is provided with a mounting base plate and an X-axis drive mechanism mounted on the mounting base plate for controlling the movement of the mass centroid measuring mechanism along the X-axis direction.

3. A physical quantity automatic measuring system for a revolving body according to claim 2, wherein The mass centroid measuring mechanism includes a movable plate that is slidably mounted on the mounting base plate along the X-axis and is connected to the X-axis drive mechanism, and a weighing component that is sequentially arranged on the movable plate along the X-axis and is used to weigh the rotating body; the weighing component and the movable plate are slidably engaged along the Z-axis.

4. A physical quantity automatic measuring system for a revolving body according to claim 3, wherein The length coaxiality measuring mechanism includes a mounting plate mounted on a frame, a linear module mounted on the mounting plate, a grating ruler and a contour scanner mounted on the linear module and driven by the linear module to move along the X-axis, and a coaxiality measuring support assembly arranged sequentially on a moving plate along the X-axis; the weighing assembly and the coaxiality measuring support assembly are staggered and their axes are on the same plane. The coaxiality measurement support assembly and the moving plate slide together along the Z-axis.

5. A physical quantity automatic measuring system for a revolving body according to claim 4, wherein The weighing assembly includes a weighing support block located above the moving plate for supporting the rotating body during weighing, a weighing sensor disposed at the bottom of the weighing support block, a weighing support for mounting the weighing sensor, and a Z-axis weighing lifting component mounted on the moving plate and controlling the weighing support to move up and down along the Z-axis direction. The coaxiality measurement support assembly includes a coaxiality support block for supporting the rotating body during length and coaxiality measurements and disposed above the moving plate, and a Z-axis coaxial lifting component mounted on the moving plate for controlling the coaxiality support block to rise and fall along the Z-axis direction.

6. A physical quantity automatic measuring system for a revolving body according to claim 5, wherein The Z-axis weighing lifting component has the same structure as the Z-axis coaxial lifting component, including a lead screw arranged along the Z-axis direction and connected at one end to the weighing support or coaxiality support block, a hollow reduction platform screwed to the lead screw and mounted on the moving plate, a drive motor driven by the hollow reduction platform and mounted on the moving plate, and a guide shaft mounted on the bottom of the weighing support or coaxiality support block and arranged parallel to the lead screw; the guide shaft is slidably engaged with the moving plate.

7. A physical quantity automatic measuring system for a revolving body according to claim 5, wherein The top surface of the weighing support has a V-shaped opening structure, and two sets of support rollers are arranged inside the V-shaped opening structure; the axes of the two sets of support rollers form a V shape, and the axes of the support rollers are on the same Z-axis plane; The top surface of the coaxiality support block has an arc-shaped structure; at least two sets of rollers are provided on the arc-shaped structure, and the axis of the rollers is set along the X-axis direction.

8. The automatic measuring system of physical quantities of a body of revolution according to claim 1, characterized in that, The conveyor line is equipped with a blocking mechanism, a photoelectric sensor, and a clamping mechanism. Once the photoelectric sensor detects that the pallet has moved into position, the control system stops the conveyor line from rotating, the blocking mechanism prevents the pallet from moving further, and the clamping mechanism clamps and fixes the pallet in place.

9. An automatic measurement method for physical quantities of a rotating body, characterized in that, An automatic measurement system for physical quantities of a rotating body according to any one of claims 1-8 specifically includes the following steps: Step S1: The conveyor line transports the rotating body on the pallet. When the pallet is in place, the conveyor line stops working and fixes the pallet. Step S2: Control the mass center of mass measuring mechanism to move along the X-axis direction, so that the weighing component in the mass center of mass measuring mechanism is in the mass center of mass measuring position. Control the mass center of mass measuring mechanism to rise along the Z-axis direction, and support and lift the rotating body. Read the readings m1 and m2 of the two sets of weighing sensors in the mass center of mass measuring mechanism; calculate the total mass M of the rotating body, M=m1+m2. Step S3: Use a length coaxiality measuring mechanism to measure the length of the rotating body and the distance between the center of mass of the rotating body and the reference of the automatic physical quantity measurement system; combine the readings of the weighing sensor to calculate the center of mass of the rotating body; L X =m1A / M+(BC); in, L X the center of mass of the body of revolution; A is the distance between the two sets of weighing support blocks; B is the distance between the weighing sensor m2 and the reference of the automatic physical quantity measurement system; C is the distance between the center of mass of the rotating body and the reference of the automatic physical quantity measurement system; Step S4: Control the mass center of mass measuring mechanism to descend along the Z-axis direction so that the rotating body is supported on the tray. Control the coaxiality measuring support assembly to move along the X-axis direction so that the coaxiality measuring support assembly is in the length coaxiality measuring position, and support and lift the rotating body. Perform coaxiality measurement of the rotating body through the length coaxiality measuring mechanism.

10. A method of automatically measuring physical quantities of a gyratory body according to claim 9, wherein When measuring coaxiality, the profile scanner is controlled to move along the X-axis, so that the profile scanner moves to the position of each section of the rotating body. The readings of the profile scanner are recorded and the center of each section is fitted to calculate the coaxiality of the rotating body.

Images