A measuring instrument applicable to measuring the roundness and diameter of annular products

Abstract

The present invention relates to the field of measurement technology, and discloses a measuring instrument suitable for measuring the roundness and diameter of a ring-shaped product, which comprises a frame, a workbench surface, a measuring assembly, a driving device and a control system. The driving device is used to drive the ring-shaped product to be measured to rotate. The control system is used to control the operation of the driving device and receive and process the measurement data of the measuring assembly. The inner diameter measuring assembly and the outer diameter groove measuring assembly in the measuring assembly are respectively located inside the inner circle and outside the ring-shaped product to be measured; and the inner diameter measuring assembly is in contact with the inner circle wall; the outer diameter groove measuring assembly is in contact with the outer circle wall and the bead respectively. Through the reasonable distribution of the measuring assembly on the workbench surface and the corresponding structure, the present invention can accurately measure the diameter and roundness-related parameters of the ring-shaped product to be measured. Through data calculation and processing by the control system, data such as the runout value, error, true roundness and height value between diameters of the ring-shaped product to be measured can be obtained. The measuring instrument has a high degree of automation and accurate detection results, greatly saving manpower.

Description

Technical Field

[0001] The invention relates to the field of measuring technology, in particular to a measuring instrument for measuring the roundness and diameter of bicycle wheels or other annular products. Background Art

[0002] The measurement of the diameter and roundness of wheels or other annular products is the parameter that needs to be measured for disc parts. Although there are various ways to measure disc parts, such as roller method, pneumatic method, grating measurement, laser measurement, etc., due to the shape of the wheel and the limitation of the measuring part, the outer diameter of the wheel is currently measured offline by a special wheel outer diameter ruler, and the measurement error is more than 0.1mm; moreover, the manual measurement of the outer diameter of the wheel using a wheel outer diameter ruler can neither guarantee the measurement accuracy nor meet the requirements of continuous production, and the labor intensity of workers is also very high. Although the pneumatic method and laser measurement method can achieve high accuracy, these methods are difficult to implement, have a large maintenance workload, and are costly, making them difficult to promote and apply in production practice. Moreover, most of the current measuring devices have relatively single functions and cannot measure roundness and diameter at the same time. Some measuring devices that can measure multiple parameters at the same time are costly. Summary of the invention

[0003] The purpose of the present invention is to provide a measuring instrument suitable for measuring the roundness and diameter of annular products in order to overcome the shortcomings of the prior art. The measuring instrument can accurately measure the diameter and roundness related parameters of the annular product to be measured through the reasonable distribution of the measuring components on the worktable and the corresponding structure. Each measuring component is connected to the control system for data calculation and processing, and the run-out value, error, true roundness and height value between diameters of the annular product to be measured can be obtained. The measuring instrument has strong practicality, high degree of automation, accurate detection results, and greatly saves manpower.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] The present invention discloses a measuring instrument suitable for measuring the roundness and diameter of annular products, which includes a frame, a work surface, a measuring component, a driving device and a control system. The work surface is arranged on the frame, the annular product to be measured is placed on the work surface, and the measuring component is arranged on the work surface and distributed around the annular product to be measured. The driving device is arranged on the work surface and is used to drive the annular product to be measured to rotate. The control system is arranged on the frame and connected with the measuring component and the driving device, and is used to control the operation of the driving device and receive and process the measurement results of the measuring component. The measuring component includes an inner diameter measuring component and an outer diameter groove measuring component; the inner diameter measuring component is located in the inner ring of the annular product to be measured and is in contact with the inner ring wall; the outer diameter groove measuring component is located outside the annular product to be measured and is in contact with the outer ring wall and the tire lip.

[0006] The inner diameter measuring assembly includes an inner diameter measuring wheel assembly and an inner diameter dial indicator assembly. The inner diameter measuring wheel assembly includes an inner diameter measuring roller, an inner diameter measuring wheel saddle, and an inner diameter measuring roller shaft core. The inner diameter measuring roller is in contact with the inner wall of the annular product to be measured. The inner diameter measuring roller is rotatably arranged on the inner diameter measuring wheel saddle through the inner diameter measuring roller shaft core. The inner diameter dial indicator assembly includes an inner diameter data transmission dial indicator and an inner diameter measuring table pressure block. The inner diameter data transmission dial indicator is fixed on the inner diameter measuring table pressure block. The inner diameter measuring wheel saddle and the inner diameter measuring table pressure block are connected by an elastic device, and the free end of the inner diameter data transmission dial indicator is in contact with the rear side of the inner diameter measuring wheel saddle.

[0007] Further, the outer diameter groove measuring assembly includes a groove measuring assembly and an outer diameter measuring assembly. The groove measuring assembly includes a groove measuring roller, a groove measuring wheel shaft core, an outer diameter measuring roller, an outer diameter measuring wheel shaft core, an outer diameter measuring wheel saddle, a groove data transmission dial indicator, and a groove measuring table fixing seat. The groove measuring roller is in contact with the bead of the annular product to be measured. The groove measuring roller is rotatably arranged on the free end of the groove data transmission dial indicator through the groove measuring wheel shaft core. The groove data transmission dial indicator is fixed on the groove measuring table fixing seat, and the groove measuring table fixing seat is fixed on the outer diameter measuring wheel saddle. The outer diameter measuring roller is in contact with the outer wall of the annular product to be measured. The outer diameter measuring roller is rotatably arranged on the outer diameter measuring wheel saddle through the outer diameter measuring wheel shaft core. The outer diameter measuring assembly includes an outer diameter data transmission dial indicator and an outer diameter measuring table fixing block. The outer diameter data transmission dial indicator is fixed on the outer diameter measuring table fixing block. The outer diameter measuring wheel saddle and the outer diameter measuring table fixing block are connected by an elastic device, and the free end of the outer diameter data transmission dial indicator is in contact with the rear side of the groove measuring table fixing seat.

[0008] Further, a first linear slide rail is arranged on the workbench surface. A first slider is arranged at the bottom of the inner diameter measuring wheel saddle, a third slider is arranged at the bottom of the inner diameter measuring table pressure block, a fourth slider is arranged at the bottom of the outer diameter measuring table fixing block, and a fifth slider is arranged at the bottom of the outer diameter measuring wheel saddle. The first slider, the third slider, the fourth slider, and the fifth slider are all movably arranged on the first linear slide rail.

[0009] Further, the elastic device includes a compression spring shaft core and a measuring head adjusting limit rod; one end of the compression spring shaft core is screwed to the front side of the inner diameter measuring gauge block, and the other end is movably sleeved on the rear side of the inner diameter measuring wheel saddle; alternatively, one end of the compression spring shaft core is screwed to the rear side of the outer diameter measuring wheel saddle, and the other end is movably sleeved on the front side of the outer diameter measuring gauge fixed block. A compression spring is arranged on the compression spring shaft core. The left side surface of the inner diameter measuring wheel saddle and the left side surface of the inner diameter measuring gauge block are adjustably connected by the measuring head adjusting limit rod, or the left side surface of the outer diameter measuring wheel saddle and the left side surface of the outer diameter measuring gauge fixed block are adjustably connected by the measuring head adjusting limit rod. Both ends of the measuring head adjusting limit rod are respectively provided with chutes for adjusting movement.

[0010] Further, a pushing component is further included, and the pushing component is arranged on the rear side surface of the inner diameter measuring gauge block or the rear side surface of the outer diameter measuring gauge block.

[0011] Further, the pushing component includes a double-rod cylinder and a pushing cylinder saddle. The double-rod cylinder is fixed on the pushing cylinder saddle, and the pushing cylinder saddle is arranged on the workbench surface so as to be movable back and forth.

[0012] Further, a plurality of pressing mechanisms are further included; each pressing mechanism includes a plane support bearing slide, a lever cylinder saddle and a lever cylinder. The plane support bearing slide is arranged on the workbench surface in an adjustable position, the lever cylinder saddle is fixed on the plane support bearing slide, and the lever cylinder is fixed on the lever cylinder saddle. A bearing is arranged above the plane support bearing slide and at the shaft end of the lever cylinder, and a spherical support roller is sleeved on the bearing. The control system is connected to the lever cylinder to control the operation of the lever cylinder.

[0013] Further, the plurality of pressing mechanisms are evenly and symmetrically arranged at 45 degrees on the workbench surface.

[0014] Further, the driving device includes a servo motor, a driving wheel set and a product positioning device. The servo motor is arranged at the bottom of the workbench surface. The driving wheel set and the product positioning device are rotatably arranged around the workbench surface and are in contact with the outer wall of the to-be-measured annular product. The product positioning device can move back and forth on the workbench surface; a first driving synchronous wheel and a second driving synchronous wheel which are matched with each other are respectively arranged at the shaft end of the servo motor and the driving wheel set; the first driving synchronous wheel is connected to the second driving synchronous wheel through a belt loop.

[0015] Further, the product positioning device includes: a positioning cylinder, a positioning cylinder saddle, a cylinder connection block, a driven wheel fixing block, and a driven wheel. The driven wheel is rotatably arranged on the driven wheel fixing block. The driven wheel fixing block is connected to the shaft end of the positioning cylinder through the cylinder connection block. The positioning cylinder is fixed to the bottom of the workbench surface through the positioning cylinder saddle. A second slider is fixed above the driven wheel fixing block, and a second linear slide rail matching with the second slider is arranged at the bottom of the workbench surface.

[0016] Further, a plurality of data calibration holes are also arranged on the workbench surface. Data calibration columns are placed in the data calibration holes.

[0017] Further, a display is also included. The display is arranged above the workbench surface and is connected to the control system.

[0018] The advantages of the present invention are as follows:

[0019] 1. An inner diameter measuring component is arranged on the workbench surface of the present invention. The inner diameter measuring roller of the inner diameter measuring component is in contact with the inner wall of the to-be-tested annular product. By the cooperation of the inner diameter data transmission dial indicator and the inner diameter measuring roller, the inner diameter and inner diameter roundness of the to-be-tested annular product can be measured simultaneously.

[0020] 2. An outer diameter groove measuring component is arranged on the workbench surface of the present invention. The groove measuring roller of the outer diameter groove measuring component is in contact with the bead of the to-be-tested annular product, and the outer diameter measuring roller is in contact with the outer wall of the to-be-tested annular product. By the cooperation of the outer diameter data transmission dial indicator and the outer diameter measuring roller of the outer diameter groove measuring component, the outer diameter and outer diameter roundness of the to-be-tested annular product can be measured simultaneously. By the cooperation of the groove data transmission dial indicator and the groove measuring roller of the outer diameter groove measuring component, the bead diameter and bead roundness of the to-be-tested annular product can be measured simultaneously.

[0021] 3. A plurality of pressing mechanisms are symmetrically arranged at 45-degree intervals on the workbench surface of the present invention to press the to-be-tested annular product tightly and prevent it from jumping. Through the control system, the to-be-tested annular product can be automatically fixed and released conveniently and quickly. A spherical support roller is also arranged on the pressing mechanism. The spherical support roller is of a spherical structure and is internally provided with a bearing. Using this spherical structure is not easy to damage the workpiece product and plays a protective role.

[0022] 4. The driving device of the present invention uses a driving wheel set to drive the rotation of the to-be-tested annular product; and a product positioning device that can move forward and backward to clamp the to-be-tested annular product, so as to achieve the purpose of driving, and the structure is simple and convenient.

[0023] 5. Each data transmission dial indicator of the present invention is connected to the control system, and transmits the measured data to the control system for data calculation and processing, capable of quickly obtaining data such as the runout value, error, roundness, and height value between diameters of the to-be-tested annular product, with a high degree of automation. Description of the Drawings

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0025] Figure 2 It is a detailed structural diagram of the driving device of the present invention.

[0026] Figure 3 It is a top view structural diagram of the present invention.

[0027] Figure 4 It is a three-dimensional structural diagram of the outer diameter groove measuring assembly.

[0028] Figure 5 It is a sectional view of the outer diameter groove measuring assembly.

[0029] Figure 6 It is a three-dimensional structural diagram of the inner diameter measuring assembly.

[0030] Figure 7 It is a sectional view of the inner diameter measuring assembly.

[0031] Figure 8 It is a three-dimensional structural diagram of the pressing mechanism.

[0032] Figure 9 It is a sectional view of the pressing mechanism.

[0033] Description of the Main Component Symbols:

[0034] 1 - Frame, 2 - Workbench surface, 3 - Bicycle wheel, 4 - Measuring assembly, 41 - Inner diameter measuring assembly, 410 - Inner diameter measuring wheel assembly, 411 - Inner diameter measuring roller, 412 - Inner diameter measuring wheel saddle, 413 - Inner diameter measuring roller axle core, 414 - Inner diameter dial indicator assembly, 415 - Inner diameter data transmission dial indicator, 416 - Inner diameter measuring gauge block, 42 - Outer diameter groove measuring assembly, 420 - Groove measuring assembly, 421 - Groove measuring roller, 422 - Groove measuring roller axle core, 423 - Outer diameter measuring roller, 424 - Outer diameter measuring roller axle core, 425 - Outer diameter measuring wheel saddle, 426 - Groove data transmission dial indicator, 427 - Groove measuring gauge fixing seat, 428 - Outer diameter measuring assembly, 429 - Outer diameter data transmission dial indicator, 430 - Outer diameter measuring gauge fixing block, 5 - Elastic device, 51 - Compression spring axle core, 52 - Measuring head adjustment limit rod, 53 - Compression spring, 6 - Pushing assembly, 61 - Double-rod cylinder, 62 - Pushing cylinder saddle, 7 - Clamping mechanism, 71 - Plain bearing slide, 72 - Lever cylinder saddle, 73 - Lever cylinder, 74 - Spherical support roller, 8 - Driving device, 81 - Servo motor, 82 - Driving wheel set, 83 - First driving synchronous wheel, 84 - Second driving synchronous wheel, 85 - Product positioning device, 851 - Positioning cylinder, 852 - Positioning cylinder saddle, 853 - Cylinder connection block, 854 - Driven wheel fixing block, 855 - Driven wheel, 856 - Second slider, 857 - Second linear slide rail, 9 - Data calibration hole, 91 - Data calibration column, 10 - First linear slide rail, 11 - First slider, 12 - Third slider, 13 - Fourth slider, 14 - Fifth slider. Detailed implementation manner

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] The annular product to be measured in this embodiment is the bicycle wheel 3. This embodiment mainly measures the inner diameter, roundness and runout of the inner ring of the bicycle wheel 3, the outer diameter, roundness and runout of the outer ring, the diameter, roundness and runout of the bead position, as well as the height from the outer ring to the bead, and the height of the rim, that is, the height from the inner ring to the outer ring.

[0037] As Figures 1-9As shown in the figure, the present invention discloses a measuring instrument suitable for measuring the roundness and diameter of annular products, which includes a frame 1, a workbench surface 2, a measuring assembly 4, a driving device 8, four pressing mechanisms 7, a display (not marked in the figure), and a control system. In this embodiment, the control system uses a PC-PLC control system. The workbench surface 2 is arranged on the frame 1, and a start button and a stop button are provided on the workbench surface 2. The bicycle wheel 3 and the measuring assembly 4 are placed on the workbench surface 2, and the measuring assembly 4 is distributed around the bicycle wheel 3. The driving device 8 is arranged on the workbench surface 2 and is used to drive the bicycle wheel 3 to rotate. The four pressing mechanisms 7 are symmetrically arranged at 45 degrees on the workbench surface 2 to press the bicycle wheel 3 to make it not easy to jump.

[0038] Sealing plates are provided on the left, right, front and rear sides of the frame 1, and the bottom of the frame 1 is also sealed, thus enclosing a cavity. The control system is arranged in the cavity of the frame 1. The control system is connected to the measuring assembly 4, the driving device 8 and the pressing mechanism 7, and is used to control the operation of the driving device 8 and the pressing mechanism 7 and receive and process the measurement results of the measuring assembly 4. The display (not marked in the figure) is arranged above the workbench surface 2 and is connected to the control system for real-time data display.

[0039] A first linear slide rail 10 is arranged on the workbench surface 2, and sliders are arranged on the measuring assembly 4 (a first slider 11 is arranged at the bottom of the inner diameter measuring wheel saddle 412, a third slider 12 is arranged at the bottom of the inner diameter measuring gauge block 416, a fourth slider 13 is arranged at the bottom of the outer diameter measuring gauge fixing block 430, and a fifth slider 14 is arranged at the bottom of the outer diameter measuring wheel saddle 425). The sliders are movably arranged on the first linear slide rail 10, so that the measuring assembly 4 can adjust its position on the workbench surface 2 according to the size of the bicycle wheel 3.

[0040] A number of data calibration holes 9 are arranged on the workbench surface 2 to calibrate the distance between the data calibration holes 9 and the origin. Data calibration columns 91 are placed in the data calibration holes 9.

[0041] Among them, as Figure 1 shown, the measuring assembly 4 includes an inner diameter measuring assembly 41 and two outer diameter groove measuring assemblies 42. The inner diameter measuring assembly 41 is located inside the inner circle of the bicycle wheel 3 and is in contact with the inner circle wall. The outer diameter groove measuring assemblies 42 are located outside the bicycle wheel 3 and are in contact with the outer circle wall and the tire bead.

[0042] As Figure 6 、 Figure 7As shown, the inner diameter measuring assembly 41 includes an inner diameter measuring wheel assembly 410 and an inner diameter dial indicator assembly 414. The inner diameter measuring wheel assembly 410 includes an inner diameter measuring roller 411, an inner diameter measuring wheel saddle 412, and an inner diameter measuring roller shaft core 413. The inner diameter measuring roller 411 is in contact with the inner ring wall of the bicycle wheel 3. The inner diameter measuring roller 411 is rotatably arranged on the inner diameter measuring wheel saddle 412 through the inner diameter measuring roller shaft core 413, and a first slider 11 is arranged at the bottom of the inner diameter measuring wheel saddle 412. The inner diameter dial indicator assembly 414 includes an inner diameter data transmission dial indicator 415 and an inner diameter measuring gauge pressing block 416. The inner diameter data transmission dial indicator 415 is fixed on the inner diameter measuring gauge pressing block 416, and a third slider 12 is arranged at the bottom of the inner diameter measuring gauge pressing block 416. The inner diameter measuring wheel saddle 412 and the inner diameter measuring gauge pressing block 416 are connected by an elastic device 5, and the free end of the inner diameter data transmission dial indicator 415 is in contact with the rear side surface of the inner diameter measuring wheel saddle 412.

[0043] As Figure 4 , Figure 5 shown, the outer diameter groove measuring assembly 42 includes a groove measuring assembly 420 and an outer diameter measuring assembly 428. The groove measuring assembly 420 includes a groove measuring roller 421, a groove measuring wheel shaft core 422, an outer diameter measuring roller 423, an outer diameter measuring wheel shaft core 424, an outer diameter measuring wheel saddle 425, a groove data transmission dial indicator 426, and a groove measuring gauge fixing seat 427. The groove measuring roller 421 is in contact with the bead of the bicycle wheel 3. The groove measuring roller 421 is rotatably arranged on the free end of the groove data transmission dial indicator 426 through the groove measuring wheel shaft core 422. The groove data transmission dial indicator 426 is fixed on the groove measuring gauge fixing seat 427, and the groove measuring gauge fixing seat 427 is fixed on the outer diameter measuring wheel saddle 425. The outer diameter measuring roller 423 is in contact with the outer ring wall of the bicycle wheel 3. The outer diameter measuring roller 423 is rotatably arranged on the outer diameter measuring wheel saddle 425 through the outer diameter measuring wheel shaft core 424. A fifth slider 14 is arranged at the bottom of the outer diameter measuring wheel saddle 425. The outer diameter measuring assembly 428 includes an outer diameter data transmission dial indicator 429 and an outer diameter measuring gauge fixing block 430. The outer diameter data transmission dial indicator 429 is fixed on the outer diameter measuring gauge fixing block 430, and a fourth slider 13 is arranged at the bottom of the outer diameter measuring gauge fixing block 430. The outer diameter measuring wheel saddle 425 and the outer diameter measuring gauge fixing block 430 are connected by an elastic device 5, and the free end of the outer diameter data transmission dial indicator 429 is in contact with the rear side surface of the groove measuring gauge fixing seat 427.

[0044] As Figure 3As shown, the inside diameter data transmission dial indicator 415, the groove data transmission dial indicator 426, and the outside diameter data transmission dial indicator 429 are connected to the control system through a serial port, and the measured data is fed back to the control system for data calculation and processing, so that data such as the diameter, runout value, error, roundness, and height value between diameters of the bicycle wheel 3 can be obtained.

[0045] Among them, the elastic device 5 includes a compression spring shaft core 51 and a measuring head adjustment limit rod 52. When the elastic device 5 is used to connect with the inside diameter measuring component 41, one end of the compression spring shaft core 51 is screwed to the front side of the inside diameter measuring gauge block 416, and the other end is movably sleeved on the rear side of the inside diameter measuring wheel saddle 412; the left side of the inside diameter measuring wheel saddle 412 and the left side of the inside diameter measuring gauge block 416 are adjustably connected through the measuring head adjustment limit rod 52. When the elastic device 5 is used to connect with the outside diameter and groove measuring component 42, one end of the compression spring shaft core 51 is screwed to the rear side of the outside diameter measuring wheel saddle 425, and the other end is movably sleeved on the front side of the outside diameter measuring gauge fixing block 430. The left side of the outside diameter measuring wheel saddle 425 and the left side of the outside diameter measuring gauge fixing block 430 are adjustably connected through the measuring head adjustment limit rod 52. A compression spring 53 is arranged on the compression spring shaft core 51. Both ends of the measuring head adjustment limit rod 52 are provided with chutes for adjusting movement.

[0046] In order to make the measuring instrument more automated, a pushing component 6 controlled by the control system is arranged on the rear sides of both the inside diameter measuring gauge block 416 and the outside diameter measuring gauge block. The pushing component 6 includes a double-rod cylinder 61 and a pushing cylinder saddle 62. The double-rod cylinder 61 is fixed on the pushing cylinder saddle 62, and the pushing cylinder saddle 62 is arranged on the workbench surface 2 so as to be movable back and forth.

[0047] Among them, as Figure 8 、 Figure 9 shown, the pressing mechanism 7 includes a flat support bearing slide 71, a lever cylinder saddle 72, and a lever cylinder 73. An industrial aluminum profile is arranged between the flat support bearing slide 71 and the workbench surface 2. The industrial aluminum profile is fixed on the workbench surface 2, and a protrusion matching the groove of the industrial aluminum profile is arranged at the bottom of the flat support bearing slide 71. The protrusion can be placed into the groove of the industrial aluminum profile and move back and forth. After moving to a suitable position, the flat support bearing slide 71 is fixed on the industrial aluminum profile through bolts and nuts, so that the flat support bearing slide 71 can adjust its position on the workbench surface 2. The lever cylinder saddle 72 is fixed on the flat support bearing slide 71, and the lever cylinder 73 is fixed on the lever cylinder saddle 72. A bearing is arranged above the flat support bearing slide 71 and at the shaft end of the lever cylinder 73, and a spherical support roller 74 is sleeved on the bearing. The spherical support roller 74 is of a spherical structure. Using this spherical structure is not easy to damage the workpiece product and plays a protective role. The control system is connected to the lever cylinder 73 to control the operation of the lever cylinder 73.

[0048] Among them, as Figure 2 shown, the driving device 8 includes a servo motor 81, a driving wheel set 82 and a product positioning device 85. The servo motor 81 is arranged at the bottom of the workbench surface 2. The driving wheel set 82 and the product positioning device 85 are rotatably arranged around the workbench surface 2 and are in contact with the outer wall of the bicycle wheel 3. The product positioning device 85 can move back and forth on the workbench surface 2. A first driving synchronous wheel 83 and a second driving synchronous wheel 84 which are matched with each other are respectively arranged at the shaft end of the servo motor 81 and the driving wheel set 82; the first driving synchronous wheel 83 is connected with the second driving synchronous wheel 84 through a belt loop.

[0049] Among them, the product positioning device 85 includes: a positioning cylinder 851, a positioning cylinder saddle 852, a cylinder connecting block 853, a driven wheel fixing block 854 and a driven wheel 855. The driven wheel 855 is rotatably arranged on the driven wheel fixing block 854, the driven wheel fixing block 854 is connected with the shaft end of the positioning cylinder 851 through the cylinder connecting block 853, and the positioning cylinder 851 is fixed at the bottom of the workbench surface 2 through the positioning cylinder saddle 852. A second slider 856 is fixed above the driven wheel fixing block 854, and a second linear slide rail 857 which is matched with the second slider 856 is arranged at the bottom of the workbench surface 2.

[0050] Working principle and method:

[0051] During use, first place the bicycle wheel 3 on the workbench surface 2 so that the outer wall of the bicycle wheel 3 is in contact with the driving wheel set 82. Move the pressing mechanism 7 so that the spherical support roller 74 of the pressing mechanism 7 is in contact with the bottom of the bicycle wheel 3 and fix it. Place the data calibration column 91 in the corresponding data calibration hole 9 according to the size of the bicycle wheel 3. The pushing assembly 6 moves the pushing cylinder saddle 62 to a suitable position according to the position of the data calibration column 91 and fixes it. Start the switch, and the measuring instrument starts to operate. The product positioning device 85 moves forward to clamp the product between the driving wheel set 82 and the driven wheel 855. Then, the lever cylinder 73 of the pressing mechanism 7 operates to fix the bicycle wheel 3 on the upper and lower spherical support rollers 74. The pushing assembly 6 respectively pushes the inner diameter measuring assembly 41 and the outer diameter groove measuring assembly 42 towards the bicycle wheel 3, so that the inner diameter measuring roller 411, the groove measuring roller 421, and the outer diameter measuring roller 423 are in contact with the inner wall, the bead, and the outer wall of the bicycle wheel 3 respectively. The driving wheel set 82 starts to operate and drives the bicycle wheel 3 to rotate. During the rotation, the inner diameter data transmission dial indicator 415, the groove data transmission dial indicator 426, and the outer diameter data transmission dial indicator 429 measure the diameter, runout value, error, and roundness of the corresponding positions, and feedback the data to the control system for data calculation and processing. By calculating the data measured by the data transmission dial indicator and the data of the data calibration column 91, the inner diameter, roundness, and runout of the inner ring of the bicycle wheel 3, the outer diameter, roundness, and runout of the outer ring, the diameter, roundness, and runout of the bead position, the height from the outer ring to the bead, and the height of the rim, that is, the height from the inner ring to the outer ring, can be obtained.

[0052] Since the inner diameter measuring roller 411, the groove measuring roller 421, and the outer diameter measuring roller 423 are in contact with the inner wall, the bead, and the outer wall of the bicycle wheel 3 respectively, and the groove measuring roller 421 is directly connected to the free end of the groove data transmission dial indicator 426, when the groove measuring roller 421 is squeezed, the groove data transmission dial indicator 426 can obtain the data change. The inner diameter measuring roller 411 and the outer diameter measuring roller 423 are respectively arranged on the inner diameter measuring wheel saddle 412 and the outer diameter measuring wheel saddle 425; while the free ends of the inner diameter data transmission dial indicator 415 and the outer diameter data transmission dial indicator 429 are in contact with the inner diameter measuring wheel saddle 412 and the outer diameter measuring wheel saddle 425 respectively. In addition, both between the inner diameter measuring wheel saddle 412 and the inner diameter measuring gauge block 416 and between the outer diameter measuring wheel saddle 425 and the outer diameter measuring gauge fixing block 430 are movably connected through the elastic device 5; so when the inner diameter measuring roller 411 and the outer diameter measuring roller 423 are squeezed, the inner diameter data transmission dial indicator 415 and the outer diameter data transmission dial indicator 429 can obtain the data change. When the bicycle tire rotates, the roundness and runout of the corresponding positions can be measured through the data change of the data transmission dial indicator.

[0053] In summary, through the reasonable distribution of the measuring components on the workbench surface and the corresponding structure, the present invention can accurately measure the diameter and roundness-related parameters of the annular product to be measured. Each measuring component is connected to the control system for data calculation and processing, and data such as the runout value, error, true roundness, and height value between diameters of the annular product to be measured can be obtained. This measuring instrument has strong practicability, high automation, and accurate detection results, greatly saving manpower.

[0054] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A measuring instrument applicable to measuring the roundness and diameter of annular products, characterized in that: it includes a frame, a workbench surface, a measuring component, a driving device and a control system; the workbench surface is arranged on the frame, the annular product to be measured and the measuring component are arranged on the workbench surface, and the measuring component is distributed around the annular product to be measured; the driving device is arranged on the workbench surface and is used to drive the annular product to be measured to rotate; the control system is arranged on the frame and is connected to the measuring component and the driving device, and is used to control the operation of the driving device and receive and process the measurement data of the measuring component; the measuring component includes an inner diameter measuring component and an outer diameter groove measuring component; the inner diameter measuring component is located inside the inner circle of the annular product to be measured and is in contact with the inner circle wall; the outer diameter groove measuring component is located outside the annular product to be measured and is in contact with the outer circle wall; the inner diameter measuring component includes an inner diameter measuring wheel component and an inner diameter dial indicator component; the inner diameter measuring wheel component includes an inner diameter measuring roller, an inner diameter measuring wheel saddle and an inner diameter measuring roller shaft core; the inner diameter measuring roller is in contact with the inner circle wall of the annular product to be measured; the inner diameter measuring roller is rotatably arranged on the inner diameter measuring wheel saddle through the inner diameter measuring roller shaft core; the inner diameter dial indicator component includes an inner diameter data transmission dial indicator and an inner diameter measuring table pressing block; the inner diameter data transmission dial indicator is fixed on the inner diameter measuring table pressing block; the inner diameter measuring wheel saddle and the inner diameter measuring table pressing block are connected through an elastic device, and the free end of the inner diameter data transmission dial indicator is in contact with the rear side surface of the inner diameter measuring wheel saddle; the outer diameter groove measuring component includes a groove measuring component and an outer diameter measuring component; the groove measuring component includes a groove measuring roller, a groove measuring roller shaft core, an outer diameter measuring roller, an outer diameter measuring roller shaft core, an outer diameter measuring wheel saddle, a groove data transmission dial indicator and a groove measuring table fixing seat; the groove measuring roller is in contact with the bead of the annular product to be measured, and the groove measuring roller is rotatably arranged on the free end of the groove data transmission dial indicator through the groove measuring roller shaft core; the groove data transmission dial indicator is fixed on the groove measuring table fixing seat, and the groove measuring table fixing seat is fixed on the outer diameter measuring wheel saddle; the outer diameter measuring roller is in contact with the outer circle wall of the annular product to be measured; the outer diameter measuring roller is rotatably arranged on the outer diameter measuring wheel saddle through the outer diameter measuring roller shaft core; the outer diameter measuring component includes an outer diameter data transmission dial indicator and an outer diameter measuring table fixing block; the outer diameter data transmission dial indicator is fixed on the outer diameter measuring table fixing block, the outer diameter measuring wheel saddle and the outer diameter measuring table fixing block are connected through an elastic device, and the free end of the outer diameter data transmission dial indicator is in contact with the rear side surface of the groove measuring table fixing seat.

2. The measuring instrument applicable to measuring the roundness and diameter of annular products according to claim 1, characterized in that: A first linear slide rail is provided on the workbench surface. A first slider is provided at the bottom of the inner diameter measuring wheel saddle, a third slider is provided at the bottom of the inner diameter measuring gauge pressing block, a fourth slider is provided at the bottom of the outer diameter measuring gauge fixing block, and a fifth slider is provided at the bottom of the outer diameter measuring wheel saddle. The first slider, the third slider, the fourth slider, and the fifth slider are all movably arranged on the first linear slide rail.

3. The measuring instrument applicable to measuring the roundness and diameter of a ring-shaped product according to claim 1 or 2, characterized in that: The elastic device includes a compression spring shaft core and a measuring head adjusting limit rod; one end of the compression spring shaft core is screwed to the front side of the inner diameter measuring gauge pressing block, and the other end is movably sleeved on the rear side of the inner diameter measuring wheel saddle; alternatively, one end of the compression spring shaft core is screwed to the rear side of the outer diameter measuring wheel saddle, and the other end is movably sleeved on the front side of the outer diameter measuring gauge fixing block; a compression spring is provided on the compression spring shaft core; the left side surface of the inner diameter measuring wheel saddle and the left side surface of the inner diameter measuring gauge pressing block are adjustably connected through the measuring head adjusting limit rod, or the left side surface of the outer diameter measuring wheel saddle and the left side surface of the outer diameter measuring gauge fixing block are adjustably connected through the measuring head adjusting limit rod; both ends of the measuring head adjusting limit rod are respectively provided with chutes for adjusting movement.

4. The measuring instrument applicable to measuring the roundness and diameter of a ring-shaped product according to claim 1, characterized in that: It further includes a pushing assembly, and the pushing assembly is arranged on the rear side surface of the inner diameter measuring gauge pressing block or the rear side surface of the outer diameter measuring gauge pressing block.

5. The measuring instrument applicable to measuring the roundness and diameter of a ring-shaped product according to claim 4, characterized in that: The pushing assembly includes a double-rod cylinder and a pushing cylinder saddle. The double-rod cylinder is fixed on the pushing cylinder saddle, and the pushing cylinder saddle is movably arranged on the workbench surface in the front-rear direction.

6. The measuring instrument applicable to measuring the roundness and diameter of a ring-shaped product according to claim 1, characterized in that: It further includes a plurality of pressing mechanisms; the pressing mechanisms include a flat support bearing slide seat, a lever cylinder saddle, and a lever cylinder; the flat support bearing slide seat is adjustably arranged on the workbench surface, the lever cylinder saddle is fixed on the flat support bearing slide seat, and the lever cylinder is fixed on the lever cylinder saddle; a bearing is provided above the flat support bearing slide seat and at the shaft end of the lever cylinder, and a spherical support roller is sleeved on the bearing; the control system is connected to the lever cylinder to control the operation of the lever cylinder.

7. The measuring instrument applicable to measuring the roundness and diameter of a ring-shaped product according to claim 6, characterized in that: The plurality of pressing mechanisms are evenly distributed and symmetrically arranged at 45 degrees on the workbench surface.

8. The measuring instrument applicable to measuring the roundness and diameter of a ring-shaped product according to claim 1, characterized in that: The driving device includes a servo motor, a driving wheel set and a product positioning device; the servo motor is arranged at the bottom of the workbench surface; the driving wheel set and the product positioning device are rotatably arranged around the workbench surface and are in contact with the outer wall of the annular product to be measured; the product positioning device can move back and forth on the workbench surface; a first driving synchronous wheel and a second driving synchronous wheel which are matched with each other are respectively arranged at the shaft end of the servo motor and the driving wheel set; The first driving synchronous wheel is connected to the second driving synchronous wheel through a belt loop.

9. The measuring instrument applicable to measuring the roundness and diameter of an annular product according to claim 8, characterized in that: The product positioning device includes: a positioning cylinder, a positioning cylinder saddle, a cylinder connecting block, a driven wheel fixing block and a driven wheel; the driven wheel is rotatably arranged on the driven wheel fixing block, the driven wheel fixing block is connected to the shaft end of the positioning cylinder through the cylinder connecting block, and the positioning cylinder is fixed to the bottom of the workbench surface through the positioning cylinder saddle; a second slider is fixed above the driven wheel fixing block, and a second linear slide rail matched with the second slider is arranged at the bottom of the workbench surface.

10. The measuring instrument applicable to measuring the roundness and diameter of an annular product according to claim 1, characterized in that: A plurality of data calibration holes are further arranged on the workbench surface; data calibration columns are placed in the data calibration holes.

11. The measuring instrument applicable to measuring the roundness and diameter of an annular product according to claim 1, characterized in that: It further includes a display, and the display is arranged above the workbench surface and is connected to the control system.

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