Hub center hole detection equipment

Abstract

The invention discloses hub center hole detection equipment. The hub center hole detection equipment comprises a detection table and a hub supporting and positioning mechanism, a distance measuring mechanism is arranged above the detection table; the hub supporting and positioning mechanism comprises a base, a central sleeve and a driving mechanism; the center sleeve is arranged on the base, a first cavity is formed between the lower portion of the center sleeve and the base, a linkage plate is arranged in the first cavity, a plurality of guide columns are arranged on the linkage plate, guide holes matched with the guide columns are formed in the upper portion of the center sleeve, first matching portions are arranged on the upper portions of the guide columns, and a plurality of sliding blocks arranged with the axis of the center sleeve as the circle center are arranged on the upper portion of the center sleeve. The sliding blocks are provided with second matching parts, the upper portion of the center sleeve is provided with a plurality of sliding grooves arranged with the axis of the center sleeve as the circle center, and the driving mechanism is in driving connection with the linkage plate. The scheme has the characteristics that the size of the center hole of the hub is detected, so that the hub is uniformly stressed in the process of being supported and positioned, the supporting and positioning efficiency is high, and clamping marks and deformation on the outer surface of the hub are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hub detection equipment, in particular to a hub center hole detection equipment. BACKGROUND

[0002] The hub is a key bearing and moving part of vehicles such as automobiles and motorcycles. The size precision and geometric state of the center mounting hole of the hub are crucial. The diameter and roundness of the center hole directly affect the fitting precision of the hub and the vehicle axle head. If the center hole size is too large or out of round, it will cause radial runout after the hub is installed, affecting the ride smoothness, tire wear uniformity, and even endangering the driving safety; if the size is too small, it cannot be installed smoothly. Therefore, after the hub is produced and manufactured offline, and after being subjected to external forces such as impact and extrusion during use, the center hole needs to be quickly and accurately detected, which is a key link to ensure product quality and driving safety.

[0003] In addition, during the detection of the hub center hole, the hub needs to be positioned and fixed. At present, for hubs, especially aluminum alloy, steel or composite material hubs with center mounting holes and spoke holes, the common positioning and fixing methods mainly include the following: External clamping positioning: clamping using the outer circumferential surface or rim of the hub. This method has obvious defects. First, the clamping force acts on the appearance surface of the hub, which is easy to produce clamping marks or deformation on the surface, affecting the appearance and even the structural strength of the product, especially for hubs that have been finished or painted. Second, the outer circle of the hub is usually not a high-precision reference surface, and using it as a positioning reference will introduce a large error, affecting the coaxiality and runout precision of machining or detection.

[0004] Bolt hole positioning and pressing: positioning through the bolt holes on the spokes using bolts or pins, and applying pressing force from the front of the hub. Although this method avoids damage to the appearance surface, it has the problems of complicated operation and low efficiency. Each hub needs to tighten multiple bolts, and the degree of automation is low. More importantly, the pressing force acts on the front of the hub, which may cause local deformation or stress concentration for thin or special-shaped hubs, and the reliability of the pressing force is challenged under high-speed rotating conditions.

[0005] Prior Chinese patent CN115555879A discloses "a one-way tension positioning mechanism", and Chinese patent CN115533558A discloses "a tension positioning mechanism". Both prior arts adopt a T-shaped head and a T-shaped groove to drive the clamping jaw to achieve the final purpose of tension positioning. However, it is found in the use process that the above structure is only suitable for a small number of clamping jaws, so that the hub is often shaken and displaced after being tensioned due to the small number of clamping jaws, resulting in poor positioning effect. If the number of clamping jaws is increased, multiple clamping jaws cannot be arranged due to the space requirement of the T-shaped head and the T-shaped groove, otherwise the thin part between the two connected T-shaped grooves will be damaged during clamping due to insufficient hardness.

[0006] Therefore, there is an urgent need to provide a hub center hole detection device to solve the above problems. SUMMARY

[0007] To achieve the above-mentioned purpose, the inventors provide a hub center hole detection device, which comprises a detection table and a hub tension positioning mechanism. A distance measuring mechanism is arranged above the detection table. The hub tension positioning mechanism is arranged on the detection table, and comprises a base, a center sleeve and a driving mechanism. The center sleeve is arranged on the base, and a first cavity is arranged between the lower part of the center sleeve and the base. A linkage plate is arranged in the first cavity. A plurality of guide columns are arranged on the linkage plate. A plurality of guide holes are arranged on the upper part of the center sleeve and matched with the guide columns. A first matching part is arranged on the upper part of the guide column. A plurality of sliding blocks are arranged on the upper part of the center sleeve and arranged in a circle with the center sleeve as the center. A second matching part is arranged on each sliding block. The first matching part and the second matching part are matched and connected. A plurality of sliding grooves are arranged on the upper part of the center sleeve and arranged in a circle with the center sleeve as the center. The sliding blocks and the sliding grooves are matched and connected. The driving mechanism is drivingly connected with the linkage plate.

[0008] As a preferred structure of the present application, a recess is arranged on the inner wall of the sliding groove, and a protrusion is arranged on the outer wall of the sliding block. The protrusion and the recess are matched and connected.

[0009] As a preferred structure of the present application, the first matching part is an inclined block, and the second matching part is an inclined groove. The inclined groove is arranged on the protrusion, and the inclined block and the inclined groove are matched and connected.

[0010] As a preferred structure of the present application, a cover is further arranged, and the cover is arranged on the top end of the center sleeve.

[0011] As a preferred structure of the present application, an opening is arranged on the cover and matched with the top part of the sliding block.

[0012] As a preferred structure of the present application, the first fitting part is a wedge, and the second fitting part is a wedge groove, and the wedge and the wedge groove are adaptively connected.

[0013] As a preferred structure of the present application, the guide column comprises a cylindrical bottom and a semi-cylindrical upper part, and the wedge is arranged on the straight plane of the semi-cylindrical upper part.

[0014] As a preferred structure of the present application, the wedge is arranged from bottom to top and outwardly inclined.

[0015] As a preferred structure of the present application, the driving mechanism is a driving oil cylinder, and the telescopic end of the driving oil cylinder penetrates through the base and the linkage plate and is connected with the linkage plate.

[0016] As a preferred structure of the present application, the outer wall of the center sleeve is provided with an injection hole and a discharge hole, and the outer wall of the sliding block is provided with an oil storage groove in communication with the injection hole and the discharge hole.

[0017] Compared with the prior art, the above technical scheme has the following beneficial effects: the device can effectively detect the center hole of the hub after the hub is tightly positioned by setting the detection table, the distance measuring mechanism, and the hub clamping and positioning mechanism; the hub clamping and positioning mechanism drives the linkage plate to move up and down in the first cavity through the driving mechanism, and the linkage plate drives the guide column to move up and down, so that the sliding block slides around the center of the center sleeve through the cooperation of the first fitting part of the guide column and the second fitting part of the sliding block. When the sliding block extends outward, the inner ring of the hub is tightly positioned, and when the sliding block is retracted, the hub is released, thereby effectively achieving the clamping and positioning effect of the hub. During the entire clamping and positioning process, no marks or deformation are generated on the outer surface of the hub, and all the sliding blocks move synchronously, thereby effectively avoiding the deformation of the hub caused by uneven force. In addition, the mechanism can adjust the number of sliding blocks according to actual needs by driving the sliding blocks through the linkage plate and the guide column, and is not limited by the design space. The entire clamping and positioning process is realized through the driving mechanism, thereby effectively improving the efficiency of clamping and positioning. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The hub center hole detection device structure schematic diagram is described for the specific implementation manner. Figure 2 The hub clamping and positioning mechanism structure schematic diagram is described for the specific implementation manner. Figure 3 The hub clamping and positioning mechanism internal partial structure schematic diagram is described for the specific implementation manner. Figure 4 The hub clamping and positioning mechanism sectional view is described for the specific implementation manner. Figure 5 An exploded view of the wheel hub tensioning and positioning mechanism described in a specific embodiment.

[0019] Explanation of reference numerals in the attached figures: 1. Hub clamping and positioning mechanism; 101. Base; 102. Center sleeve; 103. First cavity; 104. Linkage plate; 105. Guide hole; 106. Guide post; 1061. Cylindrical bottom; 1062. Semi-cylindrical upper part; 1063. Straight plane; 107. Inclined groove; 108. Slider; 109. Inclined block; 110. Slide groove; 111. Protrusion; 112. Recess; 113. Cover; 114. Opening; 115. Injection hole; 116. Discharge hole; 117. Oil reservoir; 118. Drive mechanism; 201. Detection table; 202. Distance measuring mechanism. Detailed Implementation

[0020] To explain in detail the technical content, structural features, objectives, and effects of the technical solution, the following description is provided in conjunction with specific embodiments and accompanying drawings.

[0021] like Figures 1 to 5 As shown, this embodiment provides a wheel hub center hole detection device, including: a detection platform 201 and a wheel hub clamping and positioning mechanism 1; a distance measuring mechanism 202 is provided above the detection platform 201; the wheel hub clamping and positioning mechanism 1 is disposed on the detection platform 201, and the wheel hub clamping and positioning mechanism 1 includes a base 101, a center sleeve 102 and a drive mechanism 118; the center sleeve 102 is disposed on the base 101, and a first cavity 103 is provided between the lower part of the center sleeve 102 and the base 101, a linkage plate 104 is provided in the first cavity 103, and a plurality of guide posts 1 are provided on the linkage plate 104. 06. The upper part of the central sleeve 102 is provided with a guide hole 105 adapted to the guide post 106. The upper part of the guide post 106 is provided with a first mating part. The upper part of the central sleeve 102 is provided with a plurality of sliders 108 arranged with the axis of the central sleeve 102 as the center. The sliders 108 are respectively provided with a second mating part. The first mating part and the second mating part are adapted to be connected. The upper part of the central sleeve 102 is provided with a plurality of sliding grooves 110 arranged with the axis of the central sleeve 102 as the center. The sliders 108 are adapted to be connected to the sliding grooves 110 respectively. The driving mechanism 118 is driven to be connected to the linkage plate 104.

[0022] In the specific implementation of the above embodiments, the ranging mechanism 202 can use a high-precision ranging sensor, such as a laser ranging sensor or a resistance ruler, to measure the size of the center hole of the wheel hub; the wheel hub clamping and positioning mechanism 1 is mounted on the detection table 201, and the driving mechanism 118 can be a driving cylinder, with the extension and retraction end of the driving cylinder passing through the base 101 and the linkage plate 104 and connected to the linkage plate 104; when it is necessary to perform internal clamping and positioning and release of the wheel hub, the driving mechanism 118 drives the linkage plate 104 to move within the first cavity 103, thereby driving the guide column 106 to rise. During the lifting and lowering process of the guide column 106, the first and second mating parts cooperate to drive the slider 108 to extend and retract in all directions around the axis of the central sleeve 102, thereby achieving the tightening, positioning, and release of the inner ring of the wheel hub. After the tightening and positioning mechanism achieves the tightening and positioning of the wheel hub, the ranging mechanism 202 also includes a lifting frame. The lifting frame drives the ranging sensor to approach the center hole of the wheel hub to detect the size of the center hole, thereby determining whether the size of the center hole of the wheel hub meets the factory standard and whether the wheel hub has deformed after being squeezed or impacted. In addition, in this embodiment, there are eight sliders 108, that is, the number of sliders 108 is not limited by the setting space. The corresponding number of sliders can be set as needed to achieve precise and stable tightening and positioning of the wheel hub.

[0023] like Figure 5 As shown in the above embodiment, in order to facilitate the sliding of the slider 108, a plurality of sliding grooves 110 are provided on the upper part of the central sleeve 102, arranged with the axis of the central sleeve 102 as the center. The slider 108 is adapted to and connected to the sliding grooves 110 respectively; that is, by setting the sliding grooves 110, the slider 108 is restricted to slide within the sliding grooves 110, so that the sliding of the slider 108 can be stable and avoid lateral tilting or other situations that would affect the tightening effect. In addition, in order to better restrict and guide the sliding of the slider 108, in some embodiments, such as Figure 3 and Figure 5 As shown, the inner wall of the slide groove 110 is provided with a recess 112, and the outer wall of the slider 108 is provided with a protrusion 111. The protrusion 111 and the recess 112 are adapted to be connected.

[0024] like Figure 4 As shown, the first mating part is a wedge block 109, and the second mating part is a wedge groove 107. The wedge groove 107 is formed on the protrusion 111, and the wedge block 109 and the wedge groove 107 are adapted to be connected. That is, in this embodiment, by setting the first mating part as a wedge block 109 and the second mating part as a wedge groove 107, the mating movement of the wedge block 109 and the wedge groove 107 can effectively drive the slider 108 to slide horizontally in the groove 110. Furthermore, by setting the wedge groove 107 on the protrusion 111, the structure of the protrusion 111 can be effectively utilized, making the overall structure more compact and simple.

[0025] likeFigure 2 and Figure 5 As shown, in this embodiment, the support and positioning mechanism also includes a cover 113, which is placed on the top end of the central sleeve 102. The cover 113 can effectively protect and seal the sliding area of ​​the slider 108, preventing dust and debris from the working environment from falling into the sliding area and affecting the sliding stability of the slider 108.

[0026] In different embodiments, in order to reserve an external interface for the slider 108, an opening 114 adapted to the top of the slider 108 is provided on the cover 113, such as... Figure 5 As shown, external structures, such as grippers or extension blocks, can be set on the slider 108 through the opening 114.

[0027] like Figure 3 and Figure 5 As shown, in this embodiment, the first mating part is a wedge block 109, and the second mating part is a wedge groove 107. The wedge block 109 and the wedge groove 107 are adapted to each other, that is, the slider 108 is driven to move horizontally through the adapted connection of the wedge block 109 and the wedge groove 107. In this embodiment, the guide post 106 includes a cylindrical bottom 1061 and a semi-cylindrical upper part 1062. The wedge block 109 is disposed on the straight plane 1063 of the semi-cylindrical upper part 1062, so that the bottom end face of the slider 108 can be placed on the top end face of the cylindrical bottom 1061 of the guide post 106. When the guide post 106 rises to the highest point, the top end face of the cylindrical bottom 1061 of the guide post 106 is exactly connected to the bottom of the slide groove 110 and is on the same plane, which makes the structure more compact and improves the stability of sliding.

[0028] like Figure 3 As shown, in order to make the drive mechanism 118 descend and drive the slider 108 to extend in all directions, in this embodiment, the inclined block 109 is inclined outward from bottom to top.

[0029] like Figure 2 and Figure 5 As shown, in some embodiments, in order to reduce the friction of the slider 108 during movement and to protect the slider 108, an injection hole 115 and a discharge hole 116 are provided on the outer wall of the central sleeve 102. An oil storage groove 117 connected to the injection hole 115 and the discharge hole 116 is provided on the outer wall of the slider 108. That is, lubricating oil is injected into the oil storage groove 117 through the injection hole 115 and the discharge hole 116, so that the outer wall of the slider 108 is always lubricated by lubricating oil, which has the function of reducing friction and providing protection.

[0030] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection of the present invention. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of the present invention, or equivalent structural or procedural transformations made using the content of the present invention's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of patent protection of the present invention.

Claims

1. A device for detecting the center hole of a wheel hub, characterized in that, include: The testing platform and the wheel hub tensioning and positioning mechanism; A ranging mechanism is provided above the detection platform; The wheel hub tensioning and positioning mechanism is mounted on the testing platform, and the wheel hub tensioning and positioning mechanism includes a base, a central sleeve, and a drive mechanism; The center sleeve is mounted on the base. A first cavity is provided between the lower part of the center sleeve and the base. A linkage plate is provided in the first cavity. A plurality of guide posts are provided on the linkage plate. The upper part of the center sleeve is provided with guide holes adapted to the guide posts. A first mating part is provided on the upper part of the guide posts. A plurality of sliders are arranged around the axis of the center sleeve. A second mating part is provided on each slider. The first mating part and the second mating part are adapted to each other. A plurality of sliding grooves are arranged around the axis of the center sleeve. The sliders are adapted to each sliding groove. The driving mechanism is driven to the linkage plate.

2. The hub support and positioning mechanism according to claim 1, characterized in that: The inner wall of the slide groove is provided with a recessed portion, and the outer wall of the slider is provided with a protruding portion, which is adapted to be connected to the recessed portion.

3. The hub support and positioning mechanism according to claim 2, characterized in that: The first mating part is a wedge block, and the second mating part is a wedge groove. The wedge groove is formed on the protrusion, and the wedge block and the wedge groove are adapted to be connected.

4. The hub support and positioning mechanism according to claim 1, characterized in that: It also includes a cap, which is placed on the top end of the central sleeve.

5. The hub support and positioning mechanism according to claim 4, characterized in that: The cover has an opening that matches the top of the slider.

6. The hub support and positioning mechanism according to claim 1, characterized in that: The first mating part is an inclined block, and the second mating part is an inclined groove, wherein the inclined block and the inclined groove are adapted to be connected.

7. The hub support and positioning mechanism according to claim 1, characterized in that: The guide post includes a cylindrical bottom and a semi-cylindrical upper part, and the inclined block is located on the straight plane of the semi-cylindrical upper part.

8. The hub support and positioning mechanism according to claim 7, characterized in that: The inclined blocks are set outwards and tilted upwards.

9. The hub clamping and positioning mechanism according to any one of claims 1 to 8, characterized in that: The driving mechanism is a driving cylinder, and the telescopic end of the driving cylinder passes through the base and the linkage plate and is connected to the linkage plate.

10. The hub clamping and positioning mechanism according to any one of claims 1 to 8, characterized in that: The outer wall of the central sleeve is provided with an injection hole and a discharge hole, and the outer wall of the slider is provided with an oil storage groove that communicates with the injection hole and the discharge hole.

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