X-direction mass center measuring and calculating device and method for small products

Through the combination of leveling weighing device and grating distance measuring device, automated measurement of the quality center of mass of small products is achieved, solving the problems of high measurement costs, low efficiency and major safety risks in traditional methods, and improving measurement efficiency and accuracy.

CN120538744APending Publication Date: 2025-08-26BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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Patent Information

Application Number
CN202510886653.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-30
Publication Date
2025-08-26

AI Technical Summary

Technical Problem

Traditional mass centroid measurement methods require the design of tooling for small products under test of different sizes and shapes, resulting in high measurement costs, low efficiency and safety risks, and high labor intensity for operators, which affects measurement accuracy and efficiency.

Method used

The X-direction mass centroid measurement device including a leveling weighing device and a grating distance measuring device is adopted. By adjusting the load-bearing weighing device and a grating distance measuring device, data is automatically collected and labor intensity is reduced to realize mass centroid measurement of multi-special small products.

Benefits of technology

It improves the efficiency and accuracy of the measurement of the centroid of mass of small products, reduces safety risks during suspension and lifting, and adapts to product needs of different sizes and shapes.

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Abstract

The invention relates to an X-direction mass center measuring and calculating device for small products, which is characterized by comprising a leveling and weighing device and a grating distance measuring device, and the grating distance measuring device is mounted beside the leveling and weighing device in parallel; wherein the leveling and weighing device comprises a positioning base plate (1), a movable guide rail (2) and two bearing and weighing devices, the movable guide rail (2) is installed on the horizontally-arranged positioning base plate (1), and the two bearing and weighing devices are installed on the movable guide rail (2) in a sliding mode; the device is a product which is more suitable for actual production and more practical, increases benefits for enterprises, and is simple and reasonable in structure and convenient to use, assemble, debug and maintain. Through the design of the support, the measured requirements of small products of different sizes and shapes are met, meanwhile, the potential safety hazards of a suspension method in the suspension and lifting process are reduced, and the measurement efficiency and accuracy of the process are improved.
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Description

Technical Field

[0001] The invention relates to an X-direction mass centroid measuring device and method for small products, and belongs to the field of mechanical automation. Background Art

[0002] In practical applications, traditional mass centroid measurement methods require separate tooling for small products of different sizes and shapes, which cannot meet universal requirements and increases measurement costs and time. Currently, the main measurement method is the suspension method, which requires the use of a specific suspension device. There are certain safety hazards during the suspension and lifting process. During the measurement process, the object to be measured needs to be centered and adjusted multiple times, which is labor-intensive and prone to fatigue for operators, thus affecting measurement efficiency and accuracy. Furthermore, errors may occur in the reading and recording of measurement data during the measurement process, or the position of the object to be measured may not be adjusted accurately enough, resulting in inaccurate measurements. Therefore, it is urgent to develop an X-axis mass centroid measurement device for small products to achieve automated measurement, improve the measurement efficiency and accuracy of this process, and meet the measurement needs of a variety of products. Summary of the Invention

[0003] In response to the problems existing in the measurement process of the mass centroid of the above-mentioned small products, the present invention provides an X-axis mass centroid measurement device and method for small products. The device is suitable for measuring the mass centroid of small products of multiple specifications, can realize automatic data collection, reduce labor intensity of personnel, and improve process safety.

[0004] A device for measuring the X-axis mass center of mass of small products, characterized in that it includes a leveling weighing device and a grating distance measuring device, the grating distance measuring device being installed parallel to the leveling weighing device; wherein the leveling weighing device includes a positioning base plate 1, a movable guide rail 2, and two load-bearing weighing devices, the movable guide rail 2 being installed on the horizontally arranged positioning base plate 1, and the two load-bearing weighing devices being slidably installed on the movable guide rail 2; each load-bearing weighing device is constructed as follows: a slider 3 is connected to each end of a slider connecting plate 4, the grooves at the bottom of the two sliders 3 are clamped on the two guide rails of the movable guide rail 2, a lifting platform 5 is connected to the slider connecting plate 4, a sensor base plate 6 is connected to the lifting platform 5, a force sensor 7 is connected to the sensor base plate 6, a force sensor 7 is connected to the sensor support plate 8, and a support 9 is connected to the sensor support plate 8; a triangular beam 10 is connected to the side of the support 9; because the two load-bearing weighing devices can slide on the movable guide rail 2, the two top supports 9 of the two load-bearing weighing devices can support the two ends of the rotating products to be measured of different lengths;

[0005] The grating distance measuring device includes a grating connecting plate 11, a grating 12, a grating guide rail 13, a grating slider 14, a slider connecting block 15, and a movable swing arm mechanism 16. The grating guide rail 13 is installed next to the movable guide rail 2 and maintained parallel to it. The grating guide rail 13 is fixedly mounted on multiple evenly distributed grating connecting plates 11. The gratings 12 are connected to the sides of the multiple evenly distributed grating connecting plates 11, so that the gratings 12 are parallel to the grating guide rail 13 and connected together through the grating connecting plates 11. The grating slider 14 is also slidably connected to the grating guide rail 13. The grating slider 14 is connected to the slider connecting block 15, and the slider connecting block 15 is connected to the movable swing arm mechanism 16. The movable swing arm mechanism 16 moves on the grating guide rail 13 together with the grating slider 14 and the slider connecting block 15.

[0006] During operation, the two load-bearing weighing devices move on the movable guide rail 2 through the movable slider 3, so that the horizontal distance between the two supports 9 of the two load-bearing weighing devices matches the rotating product to be measured; after the rotating product to be measured is placed on the two supports 9, the horizontal posture of the product is adjusted by the lifting platform 5; after the horizontal posture adjustment is completed, the equipment automatically reads the value of the force sensor 7, and after the reading is completed, the movable swing arm mechanism 16 is moved on the grating guide rail 13. The displacement enables the movable swing arm mechanism 16 to read the position information of the front end of the rotating product to be measured and the ends of the two triangular beams 10; after the movable swing arm mechanism 16 completes the measurement of the position information of the above three points, it automatically completes the calculation of the mass and center of mass data.

[0007] The movable swing arm mechanism 16 includes a bearing seat 160, a bearing 161, a retaining ring 162, a swing arm beam 163 and a connecting positioning pin 164. The bearing 161 is installed in the bearing hole of the bearing seat 160 and is restricted by the retaining ring 162. The positioning pin 164 passes through the inner hole of the bearing. The end of the swing arm beam 163 and the positioning pin 164 are connected together by threads.

[0008] The mass centroid is measured using the X-axis mass centroid measuring device for small products, which is characterized by comprising the following steps:

[0009] Step 1: During operation, the operator moves the two load-bearing weighing devices on the movable guide rail 2 by moving the slider 3 so that the horizontal distance between the two supports 9 on the two load-bearing weighing devices matches the product to be measured;

[0010] Step 3: Place the two ends of the rotating product to be measured on two supports 9;

[0011] Step 4: After the product is placed, the horizontal posture of the rotating product to be measured is adjusted by the lifting platform 5;

[0012] Step 5: After the posture of the rotating product to be measured is adjusted, the two load-bearing weighing devices automatically read the value of the force sensor 7;

[0013] Step 6: After the reading is completed, the position information is read at the front end of the rotating product to be measured by moving the swing arm mechanism 16; then the swing arm beam 163 is respectively placed against the two triangular beams 10 to read the position information;

[0014] Step 7: After the swing arm mechanism 16 completes the measurement of the three position information, the computer automatically completes the calculation of the mass and center of mass data.

[0015] Beneficial effects

[0016] This invention provides a device and method for measuring the X-axis mass center of mass of small products. This device is more suitable for actual production and is more practical, increasing enterprise profitability. Its simple and rational structure makes it easy to use, assemble, debug, and maintain. The support design allows for the measurement of small products of varying sizes and shapes. It also reduces safety hazards associated with suspension methods during the lifting process, improving measurement efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the device of the present invention;

[0018] Figure 2 is a top view of the positioning substrate of the present invention;

[0019] Figure 3 This is a bottom view of the positioning substrate of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the movable guide rail of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the slider of the present invention;

[0022] (a) A three-dimensional view of the slider of the present invention;

[0023] (b) bottom view of the slider of the present invention;

[0024] Figure 6 This is a structural diagram of the slider connecting plate of the present invention;

[0025] (a) A top view of the slider connecting plate of the present invention;

[0026] (b) Bottom view of the slider connecting plate of the present invention;

[0027] Figure 7 It is a schematic diagram of the lifting platform structure of the present invention;

[0028] Figure 8It is a schematic structural diagram of the sensor substrate of the present invention;

[0029] (a) A front perspective view of the sensor substrate of the present invention;

[0030] (b) A perspective view of the back side of the sensor substrate of the present invention;

[0031] Figure 9 is a three-dimensional diagram of the force sensor of the present invention;

[0032] Figure 10 is a perspective view of the sensor support plate of the present invention;

[0033] Figure 11 It is a three-dimensional diagram of the support of the present invention;

[0034] Figure 12 It is a three-dimensional diagram of the triangular beam of the present invention;

[0035] Figure 13 This is a three-dimensional diagram of the grating connecting plate of the present invention;

[0036] Figure 14 It is a grating stereogram of the present invention;

[0037] Figure 15 Schematic diagram of the grating guide rail structure of the present invention;

[0038] Figure 16 It is a schematic structural diagram of the grating slider of the present invention;

[0039] Figure 17 This is a schematic structural diagram of the slider connecting block of the present invention;

[0040] (a) A perspective view showing the structure of the slider connecting block of the present invention;

[0041] (b) A perspective view showing the bottom of the slider connecting block structure of the present invention;

[0042] Figure 18 It is a structural schematic diagram of the movable swing arm mechanism of the present invention;

[0043] (a) A schematic diagram of the front structure of the movable swing arm mechanism of the present invention;

[0044] (b) A schematic diagram of the back structure of the movable swing arm mechanism of the present invention;

[0045] Figure 19 This is a structural breakdown diagram of the movable swing arm mechanism of the present invention.

[0046] Among them, 1 is the positioning substrate, 2 is the moving guide rail, 3 is the slider, 4 is the slider connecting plate, 5 is the lifting platform, 6 is the sensor substrate, 7 is the force sensor, 8 is the sensor support plate, 9 is the support, 10 is the triangular beam, 11 is the grating connecting plate, 12 is the grating, 13 is the grating guide rail, 14 is the grating slider, 15 is the slider connecting block, 16 is the moving swing arm mechanism, 160 is the bearing seat, 161 is the bearing, 162 is the retaining ring, 163 is the swing arm beam, and 164 is the connecting positioning pin.

[0047] Among them, 100 (1-18) is a threaded hole, 101 (1-8) is a threaded hole, 200 (1-8) is a countersunk hole, 300 (1-4) is a threaded hole, 400 (1-4) is a threaded hole, 401 (1-4) is a threaded hole, 500 (1-4) is a countersunk hole, 501 (1-6) is a threaded hole, 600 (1-6) is a countersunk hole, 601 (1-2) is a countersunk hole, 700 (1-2) is a threaded hole, 701 (1-2) is a countersunk hole, Threaded hole, 800, 801 are threaded holes, 900 (1-2) are threaded holes, 1000 (1-2) are threaded holes, 1100 (1-2) are threaded holes, 1200 (1-2) are threaded holes, 1300 (1-18) are countersunk holes, 1400 (1-4) are threaded holes, 1500 (1-4) are threaded holes, 1501 (1-4) are through holes, 1502 (1-4) are through holes, and 1600 (1-2) are countersunk holes. DETAILED DESCRIPTION

[0048] The technical solution adopted by the present invention is: a device and method for measuring the X-axis mass center of mass of small products.

[0049] It mainly includes: a positioning substrate 1, a movable guide rail 2, a slider 3, a slider connecting plate 4, a lifting platform 5, a sensor substrate 6, a force sensor 7, a sensor support plate 8, a support 9, a triangular beam 10, a grating connecting plate 11, a grating 12, a grating guide rail 13, a grating slider 14, a slider connecting block 15, a movable swing arm mechanism 16, a bearing seat 160, a bearing 161, a retaining ring 162, a swing arm beam 163, and a connecting positioning pin 164.

[0050] Among them, 100 (1-18) is a threaded hole, 101 (1-8) is a threaded hole, 200 (1-8) is a countersunk hole, 300 (1-4) is a threaded hole, 400 (1-4) is a threaded hole, 401 (1-4) is a threaded hole, 500 (1-4) is a countersunk hole, 501 (1-6) is a threaded hole, 600 (1-6) is a countersunk hole, 601 (1-2) is a countersunk hole, 700 (1-2) is a threaded hole, 701 (1-2) It is a threaded hole, 800, 801 are countersunk holes, 900 (1-2) is a threaded hole, 1000 (1-2) is a threaded hole, 1100 (1-2) is a through hole, 1200 (1-2) is a threaded hole, 1300 (1-18) is a countersunk hole, 1400 (1-4) is a threaded hole, 1500 (1-4) is a threaded hole, 1501 (1-4) is a through hole, 1502 (1-4) is a through hole, and 1600 (1-2) is a countersunk hole.

[0051] In the above components, the positioning substrate 1 mainly serves as the substrate for fixing other devices. The movable guide rail 2 is fixed through the threaded hole 100 (1-18) of 100. The two sets of movable guide rails 2 are rigidly connected to the positioning substrate 1 by passing M8 screws through the countersunk holes 200 (1-8). The sliders 3 and the movable guide rails 2 are connected to the positioning substrate 1 through the slider adapter to achieve translational movement. The slider connecting plate 4 is connected to the slider 300 (1-4) by passing four M6 screws through the through hole 400 (1-4). The lifting platform 5 mainly serves as the Z-axis adjustment mechanism and is connected to the threaded hole 401 (1-4) by passing four M6 screws through the countersunk hole 500 (1-4). The sensor substrate 6 is mainly responsible for connecting the sensor support plate 8 to the lifting platform 5. It is connected to the threaded hole 501 (1-6) by passing six M4 screws through the countersunk hole 600 (1-6). The force sensor 7 collects weight information and is connected to the threaded hole 700 (1-2) by passing an M4 screw through the countersunk hole 601 (1-2). The sensor support plate 8 forms a torque angle with the force sensor 7 and is connected through the threaded hole 701 (1-2). The support 9 supports the product to be measured. The blade design adapts to the measurement requirements of products with different diameters. The support 9 is fixed by connecting it to the bottom of the support 9 through the countersunk holes 800 and 801. The triangular beam 10 mainly completes the contact of the mobile swing arm mechanism 16 to achieve the measurement of the center position. It is connected to the threaded hole 900 (1-2) by passing an M4 screw through the through hole 1000 (1-2). The grating connecting plate 11 is used to carry the grating 12 and corresponding components, and is connected to the thread 101 (1-8) through the M6 ​​through the through hole 1100 (1-2). The grating 12 is mainly used to measure position information and is located on the grating connecting plate 11. The grating guide rail 13 is mainly used to ensure the stability and accuracy of the measured position information and is placed on the grating connecting plate 11. The grating slider 14 is connected to the grating guide rail 13 to complete the linear motion. The slider connecting block 15 is connected to the grating 12 through the M6 ​​screw passing through 1501 (1-2). 1500 (1-4) is a through hole, which is connected to the grating slider 14 through four M6 screws. The movable swing arm mechanism 16 is mainly used to realize the precise positioning of the product placement position by the grating, and is connected to the 1502 (1-2) threaded hole through two M4 screws passing through the 1600 (1-2) through hole.

[0052] The movable swing arm mechanism 16 comprises a bearing seat 160, a bearing 161, a retaining ring 162, a swing arm beam 163, and a connecting locating pin 164. The bearing seat 160 is connected to the threaded hole 1502(1-2) by inserting two M4 screws through the through-hole 1600(1-2). The bearing 161 is installed in the bearing hole of the bearing seat 160 and restrained by the retaining ring 162. The swing arm beam 163 is connected to the end of the bearing by connecting the locating pin 164 through the inner hole of the bearing and then connecting to the threaded end of the bearing.

[0053] During operation, the operator places an X-axis mass center of mass measurement device designed for small products in a stable position. They move the slider 3 onto the movable guide rail 2, aligning the horizontal distance between the two sets of supports 9 with the product being measured. After the product is placed, the lifting platform 5 adjusts the product's horizontal position. The device automatically reads the force sensor 7 value. After this reading, the movable swing arm mechanism 16 is displaced along the grating guide rail 13, causing the swing arm beam 163 to abut against the triangular beam 10, positioning the front end of the product and performing a position reading. After the movable swing arm mechanism 16 completes all length measurements, the mass and center of mass data are automatically calculated.

[0054] In order to make the technical solution, usage process, achieved effects and functions of the present invention easy to understand, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the operation process of an X-axis mass center of mass measurement device and method for small products.

[0055] The mechanism involved in the present invention is characterized in that it includes: a positioning substrate 1, a movable guide rail 2, a slider 3, a slider connecting plate 4, a lifting platform 5, a sensor substrate 6, a force sensor 7, a sensor support plate 8, a support 9, a triangular beam 10, a grating connecting plate 11, a grating 12, a grating guide rail 13, a grating slider 14, a slider connecting block 15, a movable swing arm mechanism 16, a bearing seat 160, a bearing 161, a retaining ring 162, a swing arm beam 163, and a connecting positioning pin 164.

[0056] Among them, 100 (1-18) is a threaded hole, 101 (1-8) is a threaded hole, 200 (1-8) is a countersunk hole, 300 (1-4) is a threaded hole, 400 (1-4) is a threaded hole, 401 (1-4) is a threaded hole, 500 (1-4) is a countersunk hole, 501 (1-6) is a threaded hole, 600 (1-6) is a countersunk hole, 601 (1-2) is a countersunk hole, 700 (1-2) is a threaded hole, 701 (1-2) is a countersunk hole, Threaded hole, 800, 801 are threaded holes, 900 (1-2) are threaded holes, 1000 (1-2) are threaded holes, 1100 (1-2) are threaded holes, 1200 (1-2) are threaded holes, 1300 (1-18) are countersunk holes, 1400 (1-4) are threaded holes, 1500 (1-4) are threaded holes, 1501 (1-4) are through holes, 1502 (1-4) are through holes, and 1600 (1-2) are countersunk holes.

[0057] In the above components, the positioning substrate 1 mainly serves as the substrate of the device to fix other devices. The movable guide rail 2 is fixed through the threaded hole 100 (1-18). The two sets of movable guide rails 2 are rigidly connected to the positioning substrate 1 by passing M8 screws through the countersunk holes 200 (1-8). The sliders 3 and the movable guide rails 2 are connected to the positioning substrate 1 through the slider adaptation to achieve translational movement. The slider connecting plate 4 is connected to the slider 3 by passing four M6 screws through the through hole 400 (1-4). The lifting platform 5 mainly serves as the Z-axis adjustment mechanism and is connected to the threaded hole 401 (1-4) by passing four M6 screws through the countersunk hole 500 (1-4). The sensor substrate 6 is mainly responsible for supporting the sensor and connecting it to the lifting platform 5. It is connected to the threaded hole 501 (1-6) by passing six M4 screws through the countersunk hole 600 (1-6). The force sensor 7 collects weight information and is connected to the thread 700 (1-2) by passing an M4 screw through the countersunk hole 601 (1-2). The sensor support plate 8 forms a torque angle with the force sensor 7 and is connected through 701 (1-2). The support 9 supports the product to be measured. The blade design adapts to the measurement requirements of products with different diameters. The support 9 is fixed by connecting it to the bottom of the support 9 through the countersunk holes 800 and 801. The triangular beam 10 mainly completes the contact of the mobile swing arm mechanism 16 to achieve the measurement of the center position. It is connected to the threaded hole 900 (1-2) through the M4 screw through the through hole 1000 (1-2). The grating connecting plate 11 is used to carry the grating 12 and corresponding components, and is connected to the thread 101 (1-8) through the M6 ​​screw through the through hole 1100 (1-2). The grating 12 is mainly used to measure position information and is located on the grating connecting plate 11. The grating guide rail 13 is mainly used to ensure the stability and accuracy of the measured position information and is placed on the grating connecting plate 11. The grating slider 14 is connected to the grating guide rail 13 to complete the linear motion. The slider connecting block 15 is connected to the grating by passing the M6 ​​screws through 1501 (1-2). 1500 (1-4) is a through hole, which passes through 4 M6 screws to connect to the grating slider 14. The movable swing arm mechanism 16 is mainly used to realize the precise positioning of the product placement position by the grating. It is connected to the threaded hole 1502 (1-2) by passing 2 M4 screws through the through hole 1600 (1-2).

[0058] The movable swing arm mechanism includes a bearing seat 160, a bearing 161, a retaining ring 162, a swing arm beam 163, and a connecting locating pin 164. The bearing seat 160 is connected to the threaded hole 1502(1-2) by inserting two M4 screws through the through hole 1600(1-2). The bearing 161 is installed in the bearing hole of the bearing seat 160 and is restrained by the retaining ring 162. The swing arm beam 163 is connected to the end of the bearing by the connecting locating pin 164, which passes through the inner hole of the bearing and is threaded at the end.

[0059] This invention provides a device and method for measuring the X-axis center of mass of small products. This device has a simple and rational structure, making it easy to use, assemble, debug, and maintain. The support design allows for measuring small products of varying sizes and shapes. It also reduces safety hazards associated with suspension methods during the lifting process, improving measurement efficiency and accuracy.

[0060] Example:

[0061] Step 1: When working, the operator places an X-axis mass center measurement device for small products in a stable position.

[0062] Step 2: Move the slider 3 onto the movable guide rail 2 and match the horizontal distance between the two sets of supports 9 with the product to be tested.

[0063] Step 3: Place the product.

[0064] Step 4: After the product is placed, the horizontal posture of the product is adjusted through the lifting platform 5.

[0065] Step 5: The device automatically reads the value of the force sensor 7.

[0066] Step 6: After the reading is completed, the position is read at the front end of the product by moving the swing arm mechanism 16 so that the swing arm beam 163 is close to the triangular beam 10 for position reading.

[0067] Step 7: After the swing arm mechanism 16 completes the measurement of all length information, the mass and center of mass data are automatically calculated.

[0068] The present invention has beneficial effects.

[0069] The above description is the main structural features and usage methods of the present invention. It should be noted that technical personnel in this industry can propose corresponding improvements and changes based on the structural and technical principles of the present invention, but the improvements and changes should also be regarded as the scope of protection of the patent of this invention.

Claims

1. A device for measuring the X-axis mass center of mass of small products, characterized in that: The invention comprises a leveling weighing device and a grating distance measuring device, wherein the grating distance measuring device is installed parallel to the leveling weighing device; wherein the leveling weighing device comprises a positioning substrate (1), a movable guide rail (2) and two load-bearing weighing devices, wherein the movable guide rail (2) is installed on the horizontally arranged positioning substrate (1), and the two load-bearing weighing devices are slidably installed on the movable guide rail (2); each load-bearing weighing device is constructed as follows: a slider (3) is connected to each end of a slider connecting plate (4), the grooves at the bottom of the two sliders (3) are clamped on the two guide rails of the movable guide rail (2), and the sliders are connected to the two guide rails of the movable guide rail (2). The connecting plate (4) is connected to a lifting platform (5), a sensor substrate (6) is connected to the lifting platform (5), a force sensor (7) is connected to the sensor substrate (6), a force sensor (7) is connected to the sensor support plate (8), and a support (9) is connected to the sensor support plate (8); a triangular beam (10) is connected to the side of the support (9); since two load-bearing weighing devices can slide on the movable guide rail (2), the two uppermost supports (9) of the two load-bearing weighing devices can support the two ends of the rotating body products to be measured of different lengths; The grating distance measuring device comprises a grating connecting plate (11), a grating (12), a grating guide rail (13), a grating slider (14), a slider connecting block (15) and a movable swing arm mechanism (16); the grating guide rail (13) is installed beside the movable guide rail (2) and kept parallel, the grating guide rail (13) is fixedly installed on a plurality of evenly distributed grating connecting plates (11), the sides of the plurality of evenly distributed grating connecting plates (11) are connected with the grating (12), so that the grating (12) and the grating guide rail (13) are parallel and connected together through the grating connecting plate (11); a grating slider (14) is also slidably connected to the grating guide rail (13), the grating slider (14) is connected to the slider connecting block (15), and the slider connecting block (15) is connected to the movable swing arm mechanism (16); the movable swing arm mechanism (16) moves on the grating guide rail (13) together with the grating slider (14) and the slider connecting block (15); During operation, the two load-bearing weighing devices move on the movable guide rail (2) through the movable slider (3), so that the horizontal distance between the two supports (9) of the two load-bearing weighing devices matches the rotating product to be measured; after the rotating product to be measured is placed on the two supports (9), the horizontal posture of the product is adjusted by the lifting platform (5); after the horizontal posture adjustment is completed, the equipment automatically reads the value of the force sensor (7), and after the reading is completed, the movable swing arm mechanism (16) is moved on the grating guide rail (13), and the displacement causes the movable swing arm mechanism (16) to read the position information of the front end of the rotating product to be measured and the ends of the two triangular beams (10); after the movable swing arm mechanism (16) completes the measurement of the position information of the above three points, the mass and center of mass data are automatically calculated.

2. The X-axis mass center of mass measuring device for small products according to claim 1, characterized in that: The movable swing arm mechanism (16) comprises a bearing seat (160), a bearing (161), a retaining ring (162), a swing arm beam (163) and a connecting positioning pin (164). The bearing (161) is installed in the bearing hole of the bearing seat (160) and is restricted by the retaining ring (162). The positioning pin (164) passes through the inner hole of the bearing. The ends of the swing arm beam (163) and the positioning pin (164) are connected together by threads.

3. The X-axis mass centroid measuring device for small products according to claim 2 is used to measure the mass centroid, characterized in that: The following steps are included: Step 1: During operation, the operator moves the two load-bearing weighing devices on the movable guide rail (2) by moving the slider (3) so that the horizontal distance between the two supports (9) on the two load-bearing weighing devices matches the product to be measured; Step 3: Place the two ends of the rotating product to be measured on two supports (9); Step 4: After the product is placed, the horizontal posture of the rotating product to be measured is adjusted by the lifting platform (5); Step 5: After the posture of the rotating product to be measured is adjusted, the two load-bearing weighing devices automatically read the value of the force sensor (7); Step 6: After the reading is completed, the position information is read at the front end of the rotating product to be measured by moving the swing arm mechanism (16); and then the swing arm beam (163) is respectively placed against the two triangular beams (10) to read the position information; Step 7: After the mobile swing arm mechanism (16) completes the measurement of the three position information, the computer automatically completes the calculation of the mass and center of mass data.