Hub flange flatness testing fixture

Abstract

The utility model discloses a hub flange planeness testing fixture which comprises a planeness testing fixture main body, a positioning platform is arranged on the planeness testing fixture main body, a pneumatic positioning mechanism is installed in the positioning platform, and an inner hole clamp is connected to the pneumatic positioning mechanism, so that the inner hole clamp is positioned through a hub flange center hole. A horizontal displacement mechanism is mounted on the flatness detection tool main body, a mounting seat is movably mounted on the horizontal displacement mechanism through a screw rod structure, a probe mounting seat is connected to the lower end of the mounting seat, a detection probe is mounted at the lower end of the probe mounting seat, and a blowing nozzle is arranged on the side surface of the probe mounting seat; and the lower end plane of the blowing nozzle is higher than that of the detection probe. According to the hub flange flatness detection tool, impurities possibly existing in a detection part can be removed in a blowing mode, the influence on flatness detection is avoided, meanwhile, positioning between the probe and the hub flange is accurate, and the detection accuracy can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flatness checking tools, in particular to a hub flange flatness checking tool. Background Art

[0002] The hub flange is a component that connects the wheel and the vehicle axle. It is usually made of metal and has a center hole for mounting on the axle and multiple screw holes for fixing the wheel. The hub flange plays the role of fixing the wheel, transmitting power and bearing the vehicle load. The flatness of the hub flange refers to the degree of deviation between its surface and the standard plane. When manufacturing the hub flange, the control of flatness is very important because the hub flange flatness directly affects the connection quality and sealing performance of the hub flange and the wheel and the vehicle axle. During the manufacturing process of the hub flange, the hub flange flatness is tested by a flatness gauge. The flatness gauge and the hub flange after surface cleaning are placed on a flat base, so that the hub flange is in contact with the measuring instrument, and the instrument is adjusted to keep it level with the flange surface. The levelness detection probe is moved, and the readings of the probe at each position are recorded. The measurement results are analyzed and the hub flange flatness is obtained.

[0003] When the existing hub flange flatness inspection tool is in use, there may be dust and other debris on the hub flange surface, which causes a certain error in the flatness inspection. At the same time, the error in the movement of the probe relative to the hub flange will also affect the inspection result. Utility Model Content

[0004] The purpose of the utility model is to provide a hub flange flatness gauge to solve the problem raised by the above-mentioned background technology that when the hub flange flatness gauge on the market is in use, dust and other debris may still exist on the surface of the hub flange, causing a certain error in the flatness detection. At the same time, the error in the movement of the probe relative to the hub flange will also affect the detection result.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hub flange flatness gauge, comprising a flatness gauge body, a positioning platform is provided on the flatness gauge body, and a pneumatic positioning mechanism is installed in the positioning platform, and an inner hole fixture is connected to the pneumatic positioning mechanism, so that the inner hole fixture is positioned through the center hole of the hub flange, a horizontal displacement mechanism is installed on the flatness gauge body, and a mounting seat is movably installed on the horizontal displacement mechanism through a screw structure, and a probe mounting seat is connected to the lower end of the mounting seat, a detection probe is installed at the lower end of the probe mounting seat, and a blowing nozzle is provided on the side of the probe mounting seat, and the lower end plane of the blowing nozzle is higher than the lower end plane of the detection probe, so that the blowing nozzle performs a blowing decontamination treatment on the contact portion between the detection probe and the hub flange.

[0006] Preferably, a fixed bottom plate is provided at the bottom of the flatness gauge body, and the fixed bottom plate is bolted to the positioning platform. A mounting plate is also provided above the flatness gauge body, and a lifting hydraulic cylinder is installed between the mounting plate and the fixed bottom plate, and the lifting hydraulic cylinder is located on the side of the positioning platform.

[0007] Preferably, a mounting spindle is installed at the lower end of the other end of the mounting plate, and a movable mounting sleeve is connected to the lower end of the mounting spindle, a groove structure is formed between the mounting spindle and the movable mounting sleeve, and the horizontal displacement mechanism is clamped and positioned by the groove formed between the mounting spindle and the movable mounting sleeve, and the end of the horizontal displacement mechanism is fixed to the mounting spindle bolt.

[0008] Preferably, a circular groove is provided at the lower end of the movable mounting sleeve, and a limit seat with a T-shaped cross-section is engaged in the circular groove of the movable mounting sleeve, and a limit hole is provided at the bottom of the limit seat, and a fastener with a T-shaped cross-section is also engaged at the bottom of the movable mounting sleeve, and the fastener and the limit seat are engaged with each other, and balls are evenly engaged with the fastener and the limit seat at close locations, and the fastener is fixed to the movable mounting sleeve with screws.

[0009] Preferably, an integral positioning column is provided in the middle of the upper end of the positioning platform, and the positioning column is engaged with the limiting hole. A strip through hole movably arranged with the inner hole clamp is opened on the positioning platform, and the inner hole clamp is distributed in a circle with the positioning column as the center.

[0010] Preferably, a micro air pump and a flatness detection mechanism are fixed to the upper end of the horizontal displacement mechanism by screws, and the micro air pump is connected to the blowing nozzle by a pipe, and a probe mounting seat fastened with bolts to the probe mounting seat is engaged with the blowing nozzle, the flatness detection mechanism is connected to the probe mounting seat by a wire, and a bubble level is also bonded and fixed to the side of the probe mounting seat.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the hub flange flatness inspection tool can remove the debris that may exist in the inspection part by blowing, so as to avoid affecting the flatness inspection, and the probe and the hub flange are precisely positioned, so as to improve the inspection accuracy. The hub flange flatness inspection tool is provided with a positioning column on the positioning platform, so that the movable installation sleeve used for the lifting and positioning of the inspection probe and the rotation limit can be accurately positioned through the positioning column. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a hub flange flatness inspection tool of the utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of a hub flange flatness inspection tool positioning platform of the utility model;

[0014] Figure 3 This utility model is a hub flange flatness inspection tool Figure 2 The enlarged structural diagram at A in the middle;

[0015] Figure 4 It is a schematic diagram of the lowering structure of the mounting plate of a hub flange flatness inspection tool of the utility model;

[0016] Figure 5 This is a schematic diagram of the connection structure between the positioning platform and the hub flange of a hub flange flatness inspection tool of the utility model;

[0017] Figure 6 This is a schematic diagram of the upper structure of the positioning platform of a hub flange flatness inspection tool of the utility model;

[0018] Figure 7 It is a top view of the relative position structure of the mounting plate of a hub flange flatness inspection tool of the utility model;

[0019] Figure 8 It is a schematic diagram of the relative position structure of the horizontal displacement mechanism and the movable installation sleeve of a hub flange flatness inspection tool of the utility model;

[0020] Fig. 9 The utility model is a schematic diagram of the connection structure of the horizontal displacement mechanism and the mounting spindle of a wheel hub flange flatness inspection tool.

[0021] In the figure: 1. Flatness check fixture body; 2. Mounting plate; 3. Lifting hydraulic cylinder; 4. Limit seat; 401. Limit hole; 5. Positioning platform; 6. Fixed bottom plate; 7. Horizontal displacement mechanism; 8. Micro air pump; 9. Flatness detection mechanism; 10. Mounting seat; 11. Mounting spindle; 12. Probe mounting seat; 13. Blowing nozzle; 1301. Blowing nozzle fixing piece; 14. Detection probe; 15. Movable mounting sleeve; 1501. Ball; 1502. Fastener; 16. Pneumatic positioning mechanism; 17. Inner hole fixture; 18. Positioning column; 19. Bubble level. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-9The utility model provides a technical solution: a hub flange flatness gauge, comprising a flatness gauge body 1, a positioning platform 5 is arranged on the flatness gauge body 1, a fixed bottom plate 6 is arranged at the bottom of the flatness gauge body 1, and the fixed bottom plate 6 is bolted to the positioning platform 5, a mounting plate 2 is also arranged above the flatness gauge body 1, and a lifting hydraulic cylinder 3 is installed between the mounting plate 2 and the fixed bottom plate 6, and the lifting hydraulic cylinder 3 is located on the side of the positioning platform 5, this structure enables the flatness gauge body 1 to be fixed at the bottom through the fixed bottom plate 6, so that the flatness gauge body 1 can be placed on the inspection table, the upper surface of the positioning platform 5 is arranged horizontally, and the hub flange is horizontally fixed, so that the hub flange can be inspected for flatness, and the lifting hydraulic cylinder 3 is fixed on the fixed bottom plate 6 The mounting plate 2 is lifted and lowered under the position, and the distance between the detection probe 14 and the plane of the hub flange can be adjusted so that the detection probe 14 can perform flatness detection. A pneumatic positioning mechanism 16 is installed in the positioning platform 5, and an inner hole fixture 17 is connected to the pneumatic positioning mechanism 16, so that the inner hole fixture 17 is positioned through the center hole of the hub flange. An integral positioning column 18 is provided in the middle of the upper end of the positioning platform 5, and the positioning column 18 is engaged with the limiting hole 401. A strip through hole movably arranged with the inner hole fixture 17 is opened on the positioning platform 5, and the inner hole fixture 17 is distributed in a circle with the positioning column 18 as the center. This structure enables the movable mounting sleeve 15 to be firmly positioned relative to the positioning platform 5 through the cooperation of the limiting hole 401 and the positioning column 18, so that the horizontal displacement machine In order to ensure the smooth positioning and reliable rotation adjustment of the structure 7, a horizontal displacement mechanism 7 is installed on the flatness inspection fixture body 1, and a mounting seat 10 is movably installed on the horizontal displacement mechanism 7 through a screw structure, and a probe mounting seat 12 is connected to the lower end of the mounting seat 10, and a mounting spindle 11 is installed at the lower end of the other end of the mounting plate 2, and a movable mounting sleeve 15 is connected to the lower end of the mounting spindle 11, a groove structure is formed between the mounting spindle 11 and the movable mounting sleeve 15, and the horizontal displacement mechanism 7 is positioned by the groove formed between the mounting spindle 11 and the movable mounting sleeve 15, and the end of the horizontal displacement mechanism 7 is fixed to the mounting spindle 11 by bolts. This structure enables the mounting spindle 11 to be fixed to the motor through a coupling, so that the mounting spindle 11 can drive the horizontal displacement mechanism 7 The movable mounting sleeve 15 is rotated and adjusted to realize the flatness detection of different parts of the hub flange. A circular groove is provided at the lower end of the movable mounting sleeve 15, and a limit seat 4 with a T-shaped cross section is clamped in the circular groove of the movable mounting sleeve 15, and a limit hole 401 is provided at the bottom of the limit seat 4. A fastener 1502 with a T-shaped cross section is also clamped at the bottom of the movable mounting sleeve 15, and the fastener 1502 and the limit seat 4 are clamped with each other. Balls 1501 are evenly spaced and clamped near the fastener 1502 and the limit seat 4, and the fastener 1502 is fixed to the movable mounting sleeve 15 with screws. This structure enables the movable mounting sleeve 15 and the limit seat 4 to rotate relative to each other, and the ball 1501 plays a role in reducing resistance.The fastener 1502 fixes the limit seat 4 relative to the movable mounting sleeve 15. A detection probe 14 is installed at the lower end of the probe mounting seat 12, and a blowing nozzle 13 is provided on the side of the probe mounting seat 12, and the lower end plane of the blowing nozzle 13 is higher than the lower end plane of the detection probe 14, so that the blowing nozzle 13 performs a blowing decontamination treatment on the contact part between the detection probe 14 and the hub flange. The upper end of the horizontal displacement mechanism 7 is fixed with a micro air pump 8 and a flatness detection mechanism 9 by screws, and the micro air pump 8 is connected with the blowing nozzle 13 by a pipe fitting, and the blowing nozzle 13 is clamped with a probe mounting seat 12 fastened with bolts of the probe mounting seat 12. The flatness detection mechanism 9 is connected with the probe mounting seat 12 by a wire, and a bubble level 19 is also bonded and fixed on the side of the probe mounting seat 12. This structure can ensure the horizontal installation of the probe mounting seat 12 through the bubble level 19, so as to detect the flatness of the detection probe 14.

[0024] Working principle: When using the hub flange flatness gauge, first place the flatness gauge body 1 on the inspection table through the fixed base plate 6 to ensure that the surface of the positioning platform 5 is horizontal, then place the hub flange on the positioning platform 5, start the pneumatic positioning mechanism 16, and make the inner hole clamp 17 position the hub flange through the center hole of the hub flange, and then start the lifting hydraulic cylinder 3, so that the lifting hydraulic cylinder 3 moves the mounting plate 2 downward under the positioning of the fixed base plate 6, and after the movable mounting sleeve 15 is inserted into the center hole of the hub flange, the limit seat 4 is inserted into the positioning column 18 through the limit hole 401 to realize the positioning of the movable mounting sleeve 15 relative to the positioning platform 5, and after the detection probe 14 just contacts the surface of the hub flange, the positioning of the horizontal displacement mechanism 7 is realized, and then the horizontal displacement mechanism 7 is started to drive the mounting seat 10 to move through the screw structure, and the position of the probe mounting seat 12 is adjusted. The position of the detection probe 14 is adjusted relative to the hub flange to detect the flatness. The detection reading is displayed by the flatness detection mechanism 9. At the same time, the micro air pump 8 is started, and the contact part between the detection probe 14 and the hub flange surface is sprayed through the nozzle 13 to remove the influence of debris on the detection structure. The nozzle fixing part 1301 fixes the nozzle 13 on the side of the probe mounting seat 12. The bubble level 19 is used to ensure that the probe mounting seat 12 is installed horizontally, so as to ensure the horizontal movement of the detection probe 14. The mounting spindle 11 drives the horizontal displacement mechanism 7 to rotate and adjust under the positioning of the mounting plate 2, so as to realize the flatness detection of different parts of the hub flange by the detection probe 14. When the movable mounting sleeve 15 rotates, it moves relative to the limit seat 4 through the ball 1501. The fastener 1502 plays a role in installing and fastening the movable mounting sleeve 15 and the limit seat 4, thereby completing a series of tasks.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wheel hub flange flatness gauge, comprising a flatness gauge body (1), characterized in that: The flatness gauge body (1) is provided with a positioning platform (5), and a pneumatic positioning mechanism (16) is installed in the positioning platform (5), and the pneumatic positioning mechanism (16) is connected to an inner hole fixture (17), so that the inner hole fixture (17) is positioned through the center hole of the hub flange. The flatness gauge body (1) is provided with a horizontal displacement mechanism (7), and a mounting seat (10) is movably mounted on the horizontal displacement mechanism (7) through a screw structure, and a probe mounting seat (12) is connected to the lower end of the mounting seat (10), a detection probe (14) is installed at the lower end of the probe mounting seat (12), and a blowing nozzle (13) is provided on the side of the probe mounting seat (12), and the lower end plane of the blowing nozzle (13) is higher than the lower end plane of the detection probe (14), so that the blowing nozzle (13) performs a blowing decontamination treatment on the contact portion between the detection probe (14) and the hub flange.

2. A hub flange flatness inspection tool according to claim 1, characterized in that: A fixed bottom plate (6) is provided at the bottom of the flatness gauge body (1), and the fixed bottom plate (6) is fixed to the positioning platform (5) by bolts. A mounting plate (2) is also provided above the flatness gauge body (1), and a lifting hydraulic cylinder (3) is installed between the mounting plate (2) and the fixed bottom plate (6), and the lifting hydraulic cylinder (3) is located on the side of the positioning platform (5).

3. A hub flange flatness inspection tool according to claim 2, characterized in that: A mounting spindle (11) is mounted at the lower end of the other end of the mounting plate (2), and a movable mounting sleeve (15) is connected to the lower end of the mounting spindle (11), a groove structure is formed between the mounting spindle (11) and the movable mounting sleeve (15), and the horizontal displacement mechanism (7) is positioned by clamping through the groove formed between the mounting spindle (11) and the movable mounting sleeve (15), and the end of the horizontal displacement mechanism (7) is fixed to the mounting spindle (11) by bolts.

4. The hub flange flatness inspection tool according to claim 3, characterized in that: A circular groove is provided at the lower end of the movable installation sleeve (15), and a limit seat (4) with a T-shaped cross section is engaged in the circular groove of the movable installation sleeve (15), and a limit hole (401) is provided at the bottom of the limit seat (4). A fastener (1502) with a T-shaped cross section is also engaged at the bottom of the movable installation sleeve (15), and the fastener (1502) and the limit seat (4) are mutually engaged. Ball bearings (1501) are evenly engaged at intervals between the fastener (1502) and the limit seat (4), and the fastener (1502) and the movable installation sleeve (15) are fixed with screws.

5. The hub flange flatness inspection tool according to claim 1, characterized in that: An integral positioning column (18) is provided in the middle of the upper end of the positioning platform (5), and the positioning column (18) is engaged with the limiting hole (401). A strip-shaped through hole movably arranged with the inner hole clamp (17) is opened on the positioning platform (5), and the inner hole clamp (17) is distributed in a circle with the positioning column (18) as the center.

6. The hub flange flatness inspection tool according to claim 1, characterized in that: A micro air pump (8) and a flatness detection mechanism (9) are fixed to the upper end of the horizontal displacement mechanism (7) by screws, the micro air pump (8) is connected to the blowing nozzle (13) by a pipe fitting, and a probe mounting seat (12) fastened to the probe mounting seat (12) by bolts is engaged on the blowing nozzle (13), the flatness detection mechanism (9) is connected to the probe mounting seat (12) by a wire, and a bubble level (19) is also bonded and fixed to the side of the probe mounting seat (12).

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