Rim fit size detection mechanism

Abstract

The utility model provides a rim fit size detection mechanism. The rim fit size detection mechanism comprises a detection mechanism and a positioning and clamping mechanism, the detection mechanism comprises displacement sensors and an execution mechanism, and the displacement sensors are symmetrically and fixedly arranged on the execution mechanism; the device is used for measuring the matching size of the rim inner diameter and the spoke outer diameter. The actuating mechanism is used for driving the displacement sensor to approach or be far away from the inner diameter detection surface of the rim; and the positioning and clamping mechanism is used for supporting, positioning and clamping the rim. The rim matching size detection mechanism can automatically detect whether the processed rim meets the press-fit requirement or not, the detection efficiency and the detection precision are greatly improved, and the situation that the press-fit efficiency and the press-fit quality of subsequent rims and spokes are affected due to large manual detection errors and low efficiency is avoided.

Description

Technical Field

[0001] This utility model relates to the field of automated processing technology, and in particular to a wheel rim fit dimension detection mechanism. Background Technology

[0002] Currently, the manufacturing process for tubeless steel wheels involves separately processing the rim and spokes, then pressing them together using a press. Therefore, strict dimensional control is required during the individual production of the rim and spokes. To ensure a tight fit and better withstand various loads and stresses, preventing relative loosening or deformation, the rim and spokes are typically designed with an interference fit to ensure safe vehicle operation.

[0003] Therefore, an automatic detection device for wheel rim pressing dimensions needs to be added to the final process of the wheel rim production line. After the dimension detection is completed, the products are sorted, and qualified products enter the wheel hub assembly line. This will further improve the automation level of the wheel rim equipment production line and increase the production efficiency of the production line.

[0004] Conventional dimensional inspection methods mostly involve manual inspection using tools such as micrometers and vernier calipers. The results of measurements taken by different personnel or with different tools will produce different errors from the actual dimensions, making it difficult to guarantee the consistency of the required pressing dimensions of the wheel rim, affecting the pressing quality of the wheel hub. At the same time, manual inspection has low production efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a wheel rim fit dimension detection mechanism to solve at least one or more technical problems existing in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model provides a rim fit dimension detection mechanism, comprising: a detection mechanism and a positioning and clamping mechanism;

[0007] The detection mechanism includes a displacement sensor and an actuator. The displacement sensor is symmetrically and fixedly mounted on the actuator. It is used to measure the mating dimensions of the inner diameter of the wheel rim and the outer diameter of the wheel spoke.

[0008] The actuator is used to drive the displacement sensor to approach or move away from the inner diameter detection surface of the rim;

[0009] The positioning and clamping mechanism is used for supporting, positioning, and clamping the wheel rim.

[0010] Furthermore, the testing mechanism also includes a testing frame, and the actuator is movably mounted on the testing frame.

[0011] Furthermore, the actuator includes an X-axis displacement mechanism for driving the displacement sensor to approach and move away from the wheel rim along the X-axis direction;

[0012] The X-axis displacement mechanism includes an X-axis displacement drive cylinder, an X-axis displacement seat, and an X-axis displacement guide device.

[0013] Furthermore, the actuator also includes a Y-axis displacement mechanism for driving the displacement sensor to move along the Y-axis direction;

[0014] The Y-axis displacement mechanism includes a lift, a lifting frame, and a Y-axis displacement guide device.

[0015] Furthermore, the actuator also includes a Z-axis displacement mechanism for driving the displacement sensor to simultaneously approach or move away from the inner diameter detection surface of the rim along the Z-axis direction;

[0016] The Z-axis displacement mechanism includes a Z-axis displacement drive cylinder, a connecting rod centering device, and a sensor support.

[0017] Preferably, the X-axis displacement guiding device includes two sets of guide rods and guide sleeves arranged symmetrically and parallel to each other along the X-axis, for guiding the X-axis displacement seat when it moves along the X-axis;

[0018] One end of the guide rod is fixedly connected to the X-axis displacement seat.

[0019] The guide sleeve is coaxially sleeved on the outside of the guide rod and fixedly mounted on the lifting frame.

[0020] Furthermore, the body of the X-axis displacement drive cylinder is fixedly connected to the lifting frame, and the telescopic end of the X-axis displacement drive cylinder is fixedly connected to the X-axis displacement seat.

[0021] The X-axis displacement drive cylinder body and guide sleeve are fixedly connected to the lifting frame, realizing the lifting frame driving the X-axis displacement mechanism to move up and down along the Y-axis direction, thereby realizing the movement of the displacement sensor along the Y-axis direction, meeting the measurement needs of rims of different diameters.

[0022] Furthermore, the input end of the elevator is equipped with a lifting handwheel for driving the elevator; the output end of the elevator is fixedly connected to the lifting frame.

[0023] Furthermore, the Y-axis displacement guide device includes two sets of Y-axis displacement slide rails and Y-axis displacement sliders arranged symmetrically and parallel to each other along the Y-axis, for guiding the lifting frame when it moves along the Y-axis;

[0024] The Y-axis displacement slider is fixedly mounted on the lifting frame;

[0025] The Y-axis displacement slide rail is fixedly mounted on the detection frame.

[0026] Preferably, two sensor supports are symmetrically arranged along the X-axis, and the two sensor supports can move simultaneously toward or away from each other along the Z-axis.

[0027] The displacement sensor is fixedly mounted on the sensor support.

[0028] Furthermore, the Z-axis displacement mechanism also includes a Z-axis displacement guide device, which includes two sets of Z-axis displacement sliders and Z-axis displacement slide rails symmetrically arranged along the Z-axis, for guiding the sensor support when it moves along the Z-axis.

[0029] The Z-axis displacement slider is fixedly mounted on the sensor support;

[0030] The Z-axis displacement slide rail is fixedly mounted on the X-axis displacement seat.

[0031] Furthermore, the connecting rod centering device includes a rotating shaft rotatably disposed in the middle of the X-axis displacement seat, and a connecting plate is fixedly disposed at one end of the rotating shaft extending out of the X-axis displacement seat;

[0032] Two connecting rods are pivotally connected to each end of the connecting plate;

[0033] The ends of the two connecting rods furthest from the connecting plate are respectively pivotally connected to the sensor support.

[0034] The linkage alignment device ensures that the two displacement sensors synchronously approach the inner diameter of the rim, improving the accuracy of the inner diameter measurement.

[0035] Furthermore, the body of the Z-axis displacement driving cylinder is fixedly connected to one side of the sensor support; the telescopic end of the Z-axis displacement driving cylinder is fixedly connected to the other side of the sensor support, for driving the two sensor supports to move simultaneously towards or away from each other along the Z-axis direction.

[0036] Furthermore, the detection mechanism also includes a limiting device, which is disposed on the side of the X-axis displacement seat near the extension end of the Z-axis displacement drive cylinder, for limiting the extension position of the Z-axis displacement drive cylinder;

[0037] The limiting device includes a limiting handwheel and a screw;

[0038] One end of the screw is fixedly connected to the limiting handwheel, and the other end extends out to the X-axis displacement seat and abuts against the sensor support connected to the telescopic end of the Z-axis displacement drive cylinder;

[0039] The screw is threadedly connected to the X-axis displacement seat.

[0040] Specifically, before the equipment operates, the wheel rim is placed into the positioning and clamping mechanism for clamping and positioning. The lifting handwheel is rotated to adjust the lifting mechanism, and the position of the displacement sensor in the Y-axis direction is determined and fixed according to the diameter of the wheel rim of different specifications. Next, the X-axis displacement drive cylinder extends, driving the displacement sensor to extend into the wheel rim along the X-axis direction and reach the radial detection position of the wheel rim's inner diameter. Then, the Z-axis displacement drive cylinder drives the two displacement sensor detection heads to a distance slightly larger than the inner diameter of the wheel rim being measured, ensuring that both displacement sensors can contact the measured position and be compressed. The distance between the front ends of the two displacement sensors at this point is recorded. Finally, the limit handwheel is rotated so that one end of the screw abuts against the displacement sensor support, forming a limit and preventing excessive displacement of the contact digital sensor during operation, which could damage the sensor and affect the accuracy of the measurement.

[0041] Furthermore, the positioning and clamping mechanism is provided with a support frame, which is arranged adjacent to the detection frame along the X-axis direction;

[0042] The top of the support frame is provided with two positioning shafts that are parallel to and spaced apart along the X-axis.

[0043] The positioning shaft is rotatably mounted on the support frame and is used for radial positioning of the wheel rim;

[0044] A drive motor is fixedly installed at one end of the positioning shaft on one side to drive the positioning shaft to rotate; a transmission mechanism is installed at the other end for transmission connection with the positioning shaft on the other side.

[0045] Furthermore, a limiting plate is fixedly provided on the top of the support frame for limiting the rim along the X-axis direction.

[0046] Furthermore, it also includes a pressure plate, which is movably disposed on the support frame along the X-axis direction for pressing the rim along the X-axis direction;

[0047] A clamping cylinder is fixedly installed on the side of the pressure plate away from the wheel rim, which is used to drive the pressure plate to move along the X-axis.

[0048] By adopting the above technical solution, this utility model has the following beneficial effects:

[0049] The wheel rim fit dimension detection mechanism provided by this utility model has the following advantages:

[0050] Setting up a wheel rim fit dimension detection mechanism at the end of the automated wheel rim production line can automatically detect whether the processed wheel rim meets the press-fit requirements, which greatly improves the detection efficiency and accuracy, and avoids the large errors and low efficiency of manual detection, which affect the subsequent press-fit efficiency and quality of wheel rim and spokes. Attached Figure Description

[0051] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 A perspective view of a rim fit dimension detection mechanism provided for an embodiment of this utility model;

[0053] Figure 2 A front view of a rim fit dimension detection mechanism provided in an embodiment of this utility model;

[0054] Figure 3 for Figure 2 Top view;

[0055] Figure 4 A perspective view of the detection mechanism in a rim fit dimension detection mechanism provided for an embodiment of this utility model;

[0056] Figure 5 A front view of the detection mechanism in a rim fit dimension detection mechanism provided in an embodiment of this utility model;

[0057] Figure 6 for Figure 5 The left view;

[0058] Figure 7 for Figure 5 Top view;

[0059] Figure 8 for Figure 6 AA section view in the image.

[0060] Figure label:

[0061] 1-Detection mechanism; 11-Detection frame; 111-Oblong hole; 12-Contact digital displacement sensor; 13-X-axis displacement mechanism; 131-X-axis displacement drive cylinder; 132-X-axis displacement seat; 133-Guide rod; 134-Guide sleeve; 14-Y-axis displacement mechanism; 141-Lifting platform; 142-Lifting frame; 143-Y-axis displacement slide rail; 144-Y-axis displacement slider; 145-Lifting handwheel; 146-Rotating rod; 147-Coupling; 15-Z-axis position 151-Z-axis displacement drive cylinder; 152-Sensor support; 153-Z-axis displacement slide rail; 154-Z-axis displacement slider; 155-Rotating shaft; 156-Connecting plate; 157-Connecting rod; 16-Limiting device; 161-Limiting handwheel; 162-Screw; 2-Positioning clamping mechanism; 21-Support frame; 22-Positioning shaft; 23-Drive motor; 24-Sprocket and chain transmission device; 25-Limiting plate; 26-Pressure plate; 27-Pressure cylinder; 3-Rim. Detailed Implementation

[0062] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0063] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0064] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0065] The present invention will be further explained below with reference to specific embodiments.

[0066] like Figure 1-3 As shown, this embodiment provides a rim fit dimension detection mechanism, including: a detection mechanism 1 and a positioning and clamping mechanism 2;

[0067] The detection mechanism 1 includes a displacement sensor and an actuator. The displacement sensor is fixedly installed on the actuator and symmetrically arranged on both sides of the axis of the rim 3, and is used to measure the inner diameter of the rim 3 and the spokes.

[0068] The actuator is used to drive the displacement sensor closer to or away from the inner diameter detection surface of the rim;

[0069] The positioning and clamping mechanism 2 is used for supporting, positioning and clamping the rim 3.

[0070] In this embodiment, the displacement sensor is a contact digital displacement sensor 12, and two are symmetrically arranged along the X-axis. The contact digital displacement sensor 12 not only has high accuracy, but also has good linearity and strong environmental adaptability, which greatly improves the detection accuracy of the inner diameter mating dimension of the rim 3.

[0071] like Figure 4-6 As shown, the testing mechanism 1 also includes a testing frame 11, and the actuator is movably mounted on the testing frame 11.

[0072] In this embodiment, the detection frame has an elongated hole 111 along the Z-axis direction for aligning the centerline between the two contact digital displacement sensors 12 with the centerline of the rim 3.

[0073] The actuator includes an X-axis displacement mechanism 13 for driving the contact digital displacement sensor 12 to approach and move away from the rim 3 along the X-axis direction;

[0074] The X-axis displacement mechanism 13 includes an X-axis displacement drive cylinder 131, an X-axis displacement seat 132, and an X-axis displacement guide device.

[0075] The actuator also includes a Y-axis displacement mechanism 14 for driving the contact digital displacement sensor 12 to move along the Y-axis direction;

[0076] The Y-axis displacement mechanism 14 includes a lift 141, a lifting frame 142, and a Y-axis displacement guide device.

[0077] The actuator also includes a Z-axis displacement mechanism 15, which drives the contact digital displacement sensor 12 to simultaneously approach or move away from the inner diameter detection surface of the rim 3 along the Z-axis direction.

[0078] Z-axis displacement mechanism 15 includes Z-axis displacement drive cylinder 151, connecting rod centering device and sensor support 152.

[0079] Preferably, the X-axis displacement guiding device includes two sets of guide rods 133 and guide sleeves 134 arranged symmetrically and parallelly along the X-axis for guiding the X-axis displacement seat 132 when it moves along the X-axis;

[0080] One end of the guide rod 133 is fixedly connected to the X-axis displacement seat 132;

[0081] The guide sleeve 134 is coaxially sleeved on the outside of the guide rod 133 and fixedly mounted on the lifting frame 142.

[0082] The body of the X-axis displacement drive cylinder 131 is fixedly connected to the lifting frame 142, and the telescopic end of the X-axis displacement drive cylinder 131 is fixedly connected to the X-axis displacement seat 132.

[0083] The X-axis displacement drive cylinder 131 and guide sleeve 134 are fixedly connected to the lifting frame 142, which enables the lifting frame 142 to drive the X-axis displacement mechanism 13 to move up and down along the Y-axis, thereby enabling the contact digital displacement sensor 12 to move along the Y-axis, thus meeting the measurement requirements of rims 3 with different diameters.

[0084] The input end of the elevator 141 is equipped with a lifting handwheel 145 for driving the elevator 141; the output end of the elevator 141 is fixedly connected to the lifting frame 142.

[0085] In this embodiment, a rotating rod 146 is fixedly installed on the handwheel, and a coupling 147 is installed at the end of the rotating rod 146 away from the lifting handwheel 145 for transmission connection with the lifting machine 141.

[0086] The Y-axis displacement guide device includes two sets of Y-axis displacement slide rails 143 and Y-axis displacement sliders 144 arranged symmetrically and parallelly along the Y-axis, which are used to guide the lifting frame 142 when it moves along the Y-axis.

[0087] Y-axis displacement slider 144 is fixedly mounted on lifting frame 142;

[0088] The Y-axis displacement slide rail 143 is fixedly mounted on the detection frame 11.

[0089] Preferably, two sensor supports 152 are symmetrically arranged along the X-axis, and the two sensor supports 152 can move towards or away from each other simultaneously along the Z-axis.

[0090] The contact-type digital displacement sensor 12 is fixedly mounted on the sensor support 152.

[0091] like Figure 7-8 As shown, the Z-axis displacement mechanism 15 also includes a Z-axis displacement guide device, which includes two sets of Z-axis displacement sliders 154 and Z-axis displacement slide rails 153 arranged symmetrically along the Z-axis, for guiding the sensor support 152 when it moves along the Z-axis.

[0092] Z-axis displacement slider 154 is fixedly mounted on sensor support 152;

[0093] Z-axis displacement slide rail 153 is fixedly mounted on X-axis displacement seat 132.

[0094] The connecting rod centering device includes a rotating shaft 155 rotatably disposed in the middle of the X-axis displacement seat 132, and a connecting plate 156 is fixedly disposed at one end of the rotating shaft 155 extending out of the X-axis displacement seat 132.

[0095] Two connecting rods 157 are pivotally connected to both ends of the connecting plate 156;

[0096] The ends of the two connecting rods 157 furthest from the connecting plate 156 are pivotally connected to the sensor support 152.

[0097] The linkage centering device ensures that the two contact digital displacement sensors 12 synchronously approach the inner diameter detection surface of the rim 3, thus improving the accuracy of the inner diameter measurement.

[0098] The body of the Z-axis displacement drive cylinder 151 is fixedly connected to one side sensor support 152; the telescopic end of the Z-axis displacement drive cylinder 151 is fixedly connected to the other side sensor support 152, which is used to drive the two sensor supports 152 to move towards or away from each other along the Z-axis direction at the same time.

[0099] The detection mechanism 1 also includes a limiting device 16, which is disposed on the side of the X-axis displacement seat 132 near the extension end of the Z-axis displacement drive cylinder 151, and is used to limit the extension position of the Z-axis displacement drive cylinder 151.

[0100] The limiting device 16 includes a limiting handwheel 161 and a screw 162;

[0101] One end of the screw 162 is fixedly connected to the limit handwheel 161, and the other end extends into an X-axis displacement seat 132 which abuts against the sensor support 152 connected to the telescopic end of the Z-axis displacement drive cylinder 151.

[0102] The screw 162 is threadedly connected to the X-axis displacement seat 132.

[0103] Specifically, before the equipment starts working, the rim 3 is placed into the positioning and clamping mechanism 2 and clamped for positioning; the lifting handwheel 145 is rotated to adjust the lifting mechanism 141, and the position of the contact digital displacement sensor 12 in the Y-axis direction is determined according to the diameter of the rim 3 of different specifications and fixed in this position; the detection end of the contact digital displacement sensor 12 is ensured to be radially aligned with the rim 3 in the Z-axis direction; then the X-axis displacement drive cylinder 131 extends, driving the contact digital displacement sensor 12 to extend into the rim 3 along the X-axis direction and reach the radial detection position of the inner diameter of the rim 3. At this point, rotating the limit handwheel 161 adjusts the position of the screw 162 to limit the sensor support, ensuring that when the sensor support 152 abuts against the screw 162, the distance between the detection heads of the two contact digital displacement sensors 12 is slightly greater than the inner diameter of the rim 3 being measured. This ensures that both contact digital displacement sensors 12 can contact the measured position and be compressed, while simultaneously mechanically limiting the displacement of the sensor support in the Z-axis direction. This prevents excessive displacement of the contact digital displacement sensors 12 during operation, which could damage the detection heads and affect the accuracy of the measurement. Then, the Z-axis displacement drive cylinder 151 drives the two contact digital displacement sensors 12 to measure the mating inner diameter of the rim 3 and records the distance between the front ends of the two contact digital displacement sensors 12 at this time.

[0104] For example Figure 1-3 As shown, the positioning and clamping mechanism 2 is provided with a support frame 21, which is arranged adjacent to the detection frame 11 along the X-axis direction;

[0105] The top of the support frame 21 is provided with two positioning shafts 22 that are parallel to and spaced apart along the X-axis;

[0106] The positioning shaft 22 is rotatably mounted on the support frame 21 and is used for radial positioning of the rim 3;

[0107] One end of the positioning shaft 22 is fixedly equipped with a drive motor 23 for driving the positioning shaft 22 to rotate; the other end is equipped with a transmission mechanism for transmission connection with the positioning shaft 22 on the other side.

[0108] The transmission mechanism can be a sprocket and chain drive, belt drive, or gear drive, etc. In this embodiment, the transmission mechanism is a sprocket and chain drive device 24.

[0109] A limiting plate 25 is also fixedly installed on the top of the support frame 21 for limiting the rim 3 along the X-axis direction.

[0110] In addition, it also includes a pressure plate 26, which is movably disposed on the support frame 21 along the X-axis direction for pressing the rim 3 along the X-axis direction;

[0111] A clamping cylinder 27 is fixedly installed on the side of the pressure plate 26 away from the rim 3, which is used to drive the pressure plate 26 to move along the X-axis.

[0112] Furthermore, it also includes a data processing module and an alarm module (not shown);

[0113] The data processing module receives the measurement values ​​from the contact digital sensor, calculates the inner diameter of the measured rim 3, and compares the inner diameter value with a preset threshold value; the alarm module issues an audible and visual alarm for data exceeding the threshold value.

[0114] During operation, the rim fit dimension detection mechanism is located at the end of the automated production line for rim 3. After the rim 3 flows into the support frame 21 from the production line, the clamping cylinder 21 extends, driving the pressure plate 26 to press the rim 3 tightly. Then, the X-axis displacement drive cylinder 131 extends, driving the contact digital displacement sensor 12 to the position of the inner diameter to be detected on the rim 3. Next, the Z-axis displacement drive cylinder 151 extends, driving the two contact digital displacement sensors 12 to contact the inner diameter measurement surface of the rim 3 respectively. The measuring ends of the contact digital displacement sensors 12 are compressed and retracted. The data processing module automatically reads the data from the two contact digital displacement sensors 12 and obtains the inner diameter dimension of the rim 3 by subtracting the readings of the two contact digital displacement sensors from the front-end distance data. After the measurement is completed, the Z-axis displacement drive cylinder 151 retracts, the X-axis displacement drive cylinder 131 retracts, the mechanism returns to its initial position, and the detection is completed. For rims 3 whose inner diameter exceeds the critical value, an audible and visual alarm is triggered and a robotic arm removes them from the production line, indicating that they are unqualified products; rims 3 whose inner diameter does not exceed the critical value flow into the rim 3 spoke pressing line to prepare for pressing with the spokes.

[0115] The wheel rim fit dimension detection mechanism provided by this utility model has the following advantages:

[0116] Setting up a wheel rim fit dimension detection mechanism at the end of the automated wheel rim production line can automatically detect whether the processed wheel rim meets the press-fit requirements, which greatly improves the detection efficiency and accuracy, and avoids the large errors and low efficiency of manual detection, which affect the subsequent press-fit efficiency and quality of wheel rim and spokes.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rim fit dimension detection mechanism, characterized in that, include: Testing and positioning clamping mechanisms; The detection mechanism includes a displacement sensor and an actuator. The displacement sensor is symmetrically and fixedly mounted on the actuator. It is used to measure the mating dimensions of the inner diameter of the wheel rim and the outer diameter of the wheel spoke. The actuator is used to drive the displacement sensor to approach or move away from the inner diameter detection surface of the rim; The positioning and clamping mechanism is used for supporting, positioning, and clamping the wheel rim.

2. The rim fit dimension detection mechanism according to claim 1, characterized in that, The testing mechanism also includes a testing frame, and the actuator is movably mounted on the testing frame.

3. The rim fit dimension detection mechanism according to claim 2, characterized in that, The actuator includes an X-axis displacement mechanism for driving the displacement sensor to approach and move away from the wheel rim along the X-axis direction; The X-axis displacement mechanism includes an X-axis displacement drive cylinder, an X-axis displacement seat, and an X-axis displacement guide device.

4. The rim fit dimension detection mechanism according to claim 3, characterized in that, The actuator further includes a Y-axis displacement mechanism for driving the displacement sensor to move along the Y-axis direction; The Y-axis displacement mechanism includes a lift, a lifting frame, and a Y-axis displacement guide device.

5. The rim fit dimension detection mechanism according to claim 4, characterized in that, The actuator also includes a Z-axis displacement mechanism, which drives the displacement sensor to simultaneously approach or move away from the inner diameter detection surface of the rim along the Z-axis direction. The Z-axis displacement mechanism includes a Z-axis displacement drive cylinder, a connecting rod centering device, and a sensor support.

6. The rim fit dimension detection mechanism according to claim 5, characterized in that, The X-axis displacement guiding device includes two sets of guide rods and guide sleeves arranged symmetrically and parallelly along the X-axis, which are used to guide the X-axis displacement seat when it moves along the X-axis. One end of the guide rod is fixedly connected to the X-axis displacement seat. The guide sleeve is coaxially sleeved on the outside of the guide rod and fixedly mounted on the lifting frame.

7. The rim fit dimension detection mechanism according to claim 4, characterized in that, The body of the X-axis displacement drive cylinder is fixedly connected to the lifting frame, and the telescopic end of the X-axis displacement drive cylinder is fixedly connected to the X-axis displacement seat.

8. The rim fit dimension detection mechanism according to claim 4, characterized in that, The elevator is equipped with a lifting handwheel at its input end for driving the elevator; the output end of the elevator is fixedly connected to the lifting frame.

9. The rim fit dimension detection mechanism according to claim 4, characterized in that, The Y-axis displacement guide device includes two sets of Y-axis displacement slide rails and Y-axis displacement sliders arranged symmetrically and parallelly along the Y-axis, which are used to guide the lifting frame when it moves along the Y-axis. The Y-axis displacement slider is fixedly mounted on the lifting frame; The Y-axis displacement slide rail is fixedly mounted on the detection frame.

10. The rim fit dimension detection mechanism according to claim 5, characterized in that, Two sensor supports are symmetrically arranged along the X-axis, and the two sensor supports can move simultaneously towards or away from each other along the Z-axis. The displacement sensor is fixedly mounted on the sensor support.

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