Brake disc flexible online detection machine

Abstract

The present application relates to the technical field of brake disc detection equipment, and particularly relates to a flexible online brake disc detection machine, which comprises a sliding rail module, the sliding rail module comprises a guide rail, a sliding block and balls, the guide rail is provided with a raceway on both sides, the raceway extends along the length direction of the guide rail, the sliding block is slidingly connected to the guide rail, a plurality of balls are arranged in each raceway, the balls in the same raceway are uniformly spaced, and the arrangement track of the balls is inclined to the length direction of the raceway. The present application is provided with a plurality of balls which are arranged in a spaced manner along the raceway and are arranged in an inclined manner, the balls in a group are staggered along the width direction of the raceway, the rolling paths of the balls on the raceway can be formed, thus the stress of the balls on the raceway can be effectively dispersed, the damage degree of the raceway is reduced, and the service life of the raceway is prolonged.

Description

Technical Field

[0001] This invention relates to the field of brake disc testing technology, and in particular to an online brake disc flexibility testing machine. Background Technology

[0002] The brake disc flexibility testing machine is an automated device for multi-dimensional quality inspection of automotive brake discs. It is compatible with various specifications and models of brake discs and does not require frequent changes of special tooling fixtures. It is widely used in the factory inspection or process quality control of automotive parts production lines.

[0003] To meet the core requirements of "high precision, high stability, and flexible adaptation" during the testing process, the measuring mechanism (such as laser sensors, contact probes, and machine vision cameras) of the brake disc flexibility testing machine uses a linear slide rail module as the moving carrier. The linear slide rail module consists of a guide rail, a slider, and a cylinder. The measuring mechanism is mounted on the slider, the guide rail is mounted on the frame, the fixed end of the cylinder is located on the frame, and the driving end is connected to the slider, pulling the slider along the guide rail so that the measuring mechanism moves along a preset linear trajectory, thereby enabling the measuring mechanism to complete a series of tests on the brake disc.

[0004] To reduce friction between the slider and the guide rail and improve motion smoothness, the slider and guide rail are connected by two rows of rolling balls (the two rows of balls are located on the left and right sides of the slider, and the arrangement direction of the two rows of balls is the same as the slider's movement direction). This ensures that the measuring mechanism moves without jamming or vibration, avoiding interference from vibration to the precision sensor and achieving uniform movement to guarantee the uniformity of multi-point sampling. Although the rolling ball contact between the slider and the guide rail effectively reduces friction and improves motion smoothness, in existing technologies, the rolling paths of a single row of balls are identical. Therefore, the balls exert concentrated pressure on the raceways of the guide rail. With the accumulation of high-frequency reciprocating motion between the slider and the guide rail, the wear of the raceways and balls intensifies, leading to an increase in the clearance between the guide rail and the slider. Summary of the Invention

[0005] Therefore, it is necessary to provide an online brake disc flexibility testing machine to address the existing problems of slide rail modules, in order to solve the problem of large wear on the raceway of existing slide rails, which easily leads to an increase in the fit clearance between the slide rail and the slider.

[0006] The above objectives are achieved through the following technical solutions: The brake disc flexibility online testing machine includes a slide rail module, which includes: The guide rail has raceways on both sides, and the raceways extend along the length of the guide rail. The slider is slidably connected to the guide rail. Each raceway contains a number of balls, and the balls in the same raceway are evenly spaced, with the ball arrangement trajectory inclined to the length direction of the raceway.

[0007] Preferably, a support plate is provided on the inner side of the slider, and the length direction of the support plate is the same as the length direction of the slider. The balls are arranged at intervals and at an angle on the outer side of the support plate, and the balls are in rolling connection with the raceway.

[0008] Preferably, a chain is connected to the outer surface of the support plate for transmission. The chain is inclined along the length direction of the support plate, and balls are rolled on each link of the chain, and the balls are rolledly connected to the support plate.

[0009] Preferably, an annular guide frame is inclined on the outer side of the support plate, and a chain is slidably sleeved inside the annular guide frame, with balls rolling on each link of the chain.

[0010] Preferably, the annular guide frame can reciprocate within a preset distance along the width direction of the support plate.

[0011] Preferably, the support plate is provided with a linear drive element, the axis of the drive end of the linear drive element is perpendicular to the line of the length direction of the support plate, and the drive end of the linear drive element is connected to the annular guide frame.

[0012] Preferably, the support plate is provided with a rotation drive assembly, which is used to drive the chain to rotate circumferentially around the annular guide frame.

[0013] Preferably, the drive assembly includes a motor and a gear. The motor is disposed within the support plate, and the gear is sleeved on the output shaft of the motor. The gear and the output shaft of the motor can rotate synchronously around the axis of the gear and slide relative to each other along the axis of the gear. The gear is connected to the chain drive.

[0014] Preferably, a sponge block is provided on the outside of the support plate, the sponge block is impregnated with lubricating oil, and the sponge block is pressed and fitted with the ball bearing.

[0015] Preferably, it also includes a detection mechanism, which is connected to the slider.

[0016] The beneficial effects of this invention are: 1. By causing multiple balls in a set to be staggered relative to each other along the width direction of the raceway, the present invention can form multiple rolling paths of the balls on the raceway, thereby effectively dispersing the stress of the balls on the raceway, reducing the degree of damage to the raceway, and extending the service life of the raceway.

[0017] 2. The present invention is provided with an annular guide frame, and each time the slider completes a working stroke, the annular guide frame moves a preset distance along the width direction of the support plate, so as to cause the matching position of the ball and the raceway to change, and the contact point position of the ball itself and the raceway to change. In this way, through the dual change of the stress-bearing parts of the raceway and the stress-bearing points of the ball, the stress is further dispersed and the wear concentration is reduced.

[0018] 3. The present invention is provided with a rotation drive component. When the length of the chain and the travel distance of the slider cannot satisfy an integer multiple relationship, the chain is actively driven to rotate at a low speed by the rotation drive component during the sliding of the slider along the guide rail. This ensures that the contact time between each ball on the chain and the raceway is the same when the slider completes one working stroke, thereby reducing the uneven wear between different balls. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram of the brake disc flexibility online testing machine of the present invention; Figure 2 for Figure 1 A magnified schematic diagram of the structure at point A in the middle; Figure 3 This is a schematic diagram of the guide rail module in the brake disc flexibility online testing machine of the present invention; Figure 4 for Figure 3 Side view; Figure 5 for Figure 4 BB section view; Figure 6 This is a schematic diagram of the connection structure of the slider in the brake disc flexibility online testing machine of the present invention; Figure 7 for Figure 6 A magnified schematic diagram of the structure at point C; Figure 8 This is a schematic diagram of the connection structure of the support plate in the brake disc flexibility online testing machine of the present invention; Figure 9 for Figure 8 Side view; Figure 10 for Figure 9 DD section view; Figure 11 for Figure 10 A magnified schematic diagram of the structure at point F in the middle; Figure 12 for Figure 9 EE section view; Figure 13 This is a schematic diagram of the annular guide frame in the brake disc flexibility online testing machine of the present invention; Figure 14 for Figure 13 A magnified schematic diagram of the structure at point G.

[0020] in: 100. Guide rail; 110. Raceway; 200. Slider; 300, ball bearing; 400. Support plate; 500, chain; 510, chain link; 600. Annular guide frame; 610. Guide groove; 620. Through groove; 700. Linear drive components; 800. Rotary drive assembly; 810. Motor; 820. Gear; 900, Sponge block; 1001. Frame; 1002. Fixture; 1003. Testing mechanism. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0022] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They 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 limiting the invention.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] like Figures 1 to 14 As shown, the brake disc flexibility online testing machine includes a slide rail module, which includes a guide rail 100, a slider 200, and balls 300. The guide rail 100 has raceways 110 on both sides, and the raceways 110 extend along the length of the guide rail 100. The slider 200 is slidably connected to the guide rail 100. Each raceway 110 has several balls 300, and the balls 300 in the same raceway 110 are evenly spaced, and the arrangement trajectory of the balls 300 is inclined to the length of the raceway 110.

[0025] When the slider 200 slides along the guide rail 100, the balls 300 located between the raceway 110 and the slider 200 roll under force. Since the arrangement trajectory of the balls 300 is inclined to the length direction of the raceway 110, the rolling paths of several balls 300 in each group on the raceway 110 are staggered along the width direction of the raceway 110. Compared with the single rolling path of a group of balls 300 in the prior art, the present invention makes multiple balls 300 in a group staggered along the width direction of the raceway 110, so that multiple rolling paths of balls 300 are formed on the raceway 110. Therefore, the stress of the balls 300 on the raceway 110 can be effectively dispersed, the stress concentration of the balls 300 on the raceway 110 can be avoided, the degree of damage to the raceway 110 can be reduced, and the service life of the raceway 110 can be extended.

[0026] It should be further explained that, for the guide rail 100, if there is a raceway 110 on each side of the guide rail 100, then the multiple balls 300 (an even number) are evenly divided into two groups, with the two groups of balls 300 corresponding one-to-one with the two raceways 110. To increase the stability of the fit between the guide rail 100 and the slider 200, and to prevent the slider 200 from moving vertically or horizontally relative to the guide rail 100, the number of raceways 110 can be increased to four, such as... Figure 5 As shown, the number of raceways 110 is set to four, with two on each of the left and right sides of the guide rail 100. The guide surfaces of the two raceways 110 on the same side are arranged at an angle. In this way, the freedom of the slider 200 relative to the guide rail 100 in the vertical and left and right directions is constrained, thus preventing the slider 200 from moving vertically or horizontally relative to the guide rail 100. In addition, the number of sets of balls 300 and the number of raceways 110 are both set to four, compared to two sets of balls 300 and two raceways 110. This helps to distribute the stress on each raceway 110, thereby extending the service life of the raceway 110.

[0027] It should also be noted that, in order to make the ball 300 roll on the inner side of the slider 200, in this embodiment, a ball groove for mounting the ball 300 can be machined on the inner side of the slider 200, and the ball 300 can be rolled in the ball groove.

[0028] In a further embodiment, such as Figure 1 and Figure 2 As shown, the brake disc flexibility online testing machine also includes a testing mechanism 1003, which is connected to the slider 200. The guide rail 100 is mounted on the frame 1001. In addition, the frame 1001 is also equipped with a clamp 1002 for fixing the brake disc.

[0029] In the previous embodiment, to install the ball bearing 300, a ball groove for installing the ball bearing 300 needs to be machined on the inner side of the slider 200. Since the ball bearing 300 moves relative to the ball groove during its rolling process, the ball groove will gradually wear and enlarge over time. When the ball groove wears to the point that the ball bearing 300 installed inside it wobbles relative to the ball groove during rolling, the ball groove loses its function of limiting the ball bearing 300. At this point, the slider 200 becomes unusable. To solve this problem, in a further embodiment, such as... Figure 5 and Figure 6 As shown, a support plate 400 is provided on the inner side of the slider 200. Specifically, the support plate 400 can be fixedly installed on the inner side of the slider 200 by screws, and the length direction of the support plate 400 is the same as the length direction of the slider 200. The balls 300 are arranged at intervals and at an angle on the support plate 400 along the outer side of the support plate 400. Specifically, multiple ball grooves are arranged at intervals and at an angle on the support plate 400 along the outer side of the support plate 400, and the balls 300 are located in the ball grooves and are in rolling connection with the raceway 110.

[0030] When the ball groove on the support plate 400 is worn and can no longer be used, the operator can remove the support plate 400 from the slider 200 and replace it with a new support plate 400, without having to replace the entire slider 200, thus reducing maintenance costs.

[0031] In addition, the manufacturing cost of machining ball grooves on the support plate 400 is much lower than that of machining ball grooves on multiple inner surfaces of the slider 200, which also helps to reduce the cost of the equipment (brake disc flexible online testing machine).

[0032] In a further embodiment, a chain 500 is slidably sleeved on the outer surface of the support plate 400. The chain 500 is inclined in the length direction of the support plate 400. Balls 300 are slidably disposed on each link 510 of the chain 500. Specifically, a ball groove is provided on the link 510, and the ball groove is a through spherical groove. The ball 300 is slidably disposed in the ball groove so that the ball 300 is simultaneously slidably connected with the support plate 400 and the raceway 110.

[0033] Because there is a certain contact stress between the ball 300 and the raceway 110, when the slider 200 slides along the guide rail 100, under the driving action of static friction, the ball 300 pushes the corresponding chain link 510 to move, so that the chain 500 is subjected to force and slides circumferentially along the outer side of the support plate 400. Since the ball 300 on the chain link 510 and the raceway 110 are transmitted through "static friction", there is no relative sliding between the raceway 110 and the chain 500. Therefore, the wear on the raceway 110 can be further reduced and the service life of the raceway 110 can be extended.

[0034] It should be noted that the reason for reducing the wear on the raceway 110, rather than completely avoiding wear, is that the chain 500 may experience slight slippage relative to the raceway 110 due to improper maintenance during use.

[0035] It should be noted that, in this embodiment, there is no need to open a ball groove for mounting the ball 300 on the outer side of the support plate 400; the ball 300 can directly roll in contact with the smooth outer side of the support plate 400.

[0036] To facilitate the tilted mounting of the chain 500 onto the support plate 400, in a further embodiment, such as... Figures 6-8 As shown, an annular guide frame 600 is inclined on the outer side of the support plate 400. Specifically, the straight line of the length direction of the annular guide frame 600 is inclined to the straight line of the length direction of the support plate 400. The annular guide frame 600 is set on the outer side of the support plate 400 by screw connection. A chain 500 is slidably sleeved in the annular guide frame 600. Specifically, a guide groove 610 is opened on the outer side of the annular guide frame 600. The guide groove 610 is an annular groove. The chain 500 is slidably sleeved in the guide groove 610. The width of the guide groove 610 is adapted to the width of the chain link 510. The ball bearings 300 are rolled on each chain link 510 of the chain 500.

[0037] During installation, the staff only needs to slide the chain 500 into the guide groove 610 of the ring guide frame 600, and then install the ring guide frame 600 at an angle on the support plate 400 to ensure that the chain 500 is inclined in the length direction of the support plate 400 and that the chain 500 is in a taut state.

[0038] It should also be noted that the guide groove 610 is preferably a recessed groove, in which case the ball 300 is in contact with the bottom of the guide groove 610. During the process of the chain 500 sliding around the guide groove 610, the ball 300 does not contact the support plate 400. Compared with making the guide groove 610 a through groove, the support plate 400 can be prevented from being worn due to direct contact between the ball 300 and the support plate 400. Therefore, when the annular guide frame 600 is worn, only the annular guide frame 600 needs to be replaced, and there is no need to replace the support plate 400, thus reducing the cost of replacing consumables.

[0039] In a further embodiment, such as Figures 6-8 As shown, the annular guide frame 600 can reciprocate within a preset range along the width direction of the support plate 400, and this preset range is approximately equal to the circumference length corresponding to the diameter of the ball 300.

[0040] After the slider 200 slides along the guide rail 100 to its limit position and resets, the annular guide frame 600 moves a preset distance along the width direction of the support plate 400. This preset distance is approximately equal to one-quarter of the circumference corresponding to the diameter of the ball 300. At this time, the mating position of the ball 300 and the raceway 110 (the position along the width direction of the raceway 110) has changed compared to before the annular guide frame 600 moved. Therefore, the stress on the raceway 110 can be further dispersed, reducing the degree of wear concentration. In addition, when the annular guide frame 600 moves along the width direction of the support plate 400, the ball 300 rolls under its own force. Therefore, the position of the contact point between the ball 300 and the raceway 110 is also changed. Thus, the stress position of the ball 300 can also be dispersed, preventing severe local wear of the ball 300. Thus, whenever the slider 200 completes a working stroke, the annular guide frame 600 moves a preset distance along the width direction of the support plate 400, so as to cause the mating position of the ball 300 and the raceway 110 to change. The contact point position between the ball 300 and the raceway 110 changes, thereby achieving the effect of further dispersing stress and reducing the degree of wear concentration through the dual changes in the stress-bearing parts of the raceway 110 and the stress-bearing points of the ball 300.

[0041] Furthermore, a linear drive element 700 is provided on the support plate 400. The axis of the drive end of the linear drive element 700 is perpendicular to the line containing the length direction of the support plate 400. The drive end of the linear drive element 700 is connected to the annular guide frame 600. The linear drive element 700 can be a hydraulic cylinder or an electric telescopic rod. The linear drive element 700 is connected to the cylinder for driving the slider 200 to move along the guide rail 100. It is configured such that the linear drive element 700 drives the annular guide frame 600 to move a preset distance for each working stroke completed by the slider 200.

[0042] It should also be noted that there are two linear drive elements 700, which are spaced apart along the length of the support plate 400, thereby uniformly pushing the annular guide frame 600 to move along the width of the support plate 400.

[0043] It should also be noted that when the linear drive element 700 drives the annular guide frame 600 to move along the width direction of the support plate 400 to the limit position of one of the two ends, the linear drive element 700 drives the annular guide frame 600 to move in the opposite direction along the width direction of the support plate 400 by a preset distance.

[0044] It is understandable that the travel length of the slider 200 and the circumference of the chain 500 are not always guaranteed to be an integer multiple. For example, dimensional fit issues may prevent the travel length of the slider 200 from being guaranteed to be an integer multiple of the circumference of the chain 500 during manufacturing. This will cause some balls 300 to have a longer contact time with the raceway 110 than others, resulting in inconsistent wear on the balls 300. To solve this problem, in a further embodiment, such as... Figures 10-11 As shown, a rotation drive assembly 800 is provided on the support plate 400. The rotation drive assembly 800 is used to drive the chain 500 to rotate circumferentially around the annular guide frame 600.

[0045] When the travel length of slider 200 is not an integer multiple of the circumference of chain 500, the operator can divide the travel length of slider 200 by the circumference of chain 500 to obtain the remainder. Then, by rotating the drive assembly 800, the chain 500 is driven to actively rotate around the annular guide frame 600 a target distance until the sum of the target distance and the remainder equals the circumference of chain 500. This ensures that the contact time between each ball 300 and the raceway 110 is consistent, thereby preventing excessive wear of some balls 300.

[0046] In a further embodiment, such as Figures 10-14 As shown, the rotation drive assembly 800 includes a motor 810 and a gear 820. The motor 810 is disposed inside the support plate 400, and the gear 820 is sleeved on the output shaft of the motor 810. The gear 820 and the output shaft of the motor 810 can rotate synchronously around the axis of the gear 820 and slide relative to each other along the axis of the gear 820. The gear 820 is connected to the chain 500 for transmission.

[0047] When the travel length of slider 200 is not an integer multiple of the circumference of chain 500, the rotation angle of motor 810 is pre-set according to the diameter of gear 820 so that the sum of the target distance (arc length of gear 820) and the remainder equals the circumference of chain 500. As slider 200 moves along guide rail 100, motor 810 starts to rotate. The output shaft of motor 810 drives gear 820 to rotate, which in turn drives chain 500. When slider 200 completes one working stroke, the sum of the arc length of gear 820 driven by motor 810 and the remainder equals the circumference of chain 500. This ensures that the contact time between each ball 300 and raceway 110 is consistent, thus preventing excessive wear of some balls 300.

[0048] It should also be noted that, such as Figures 13-14 As shown, in order to enable the gear 820 to be connected and engaged with the chain 500 in the guide groove 610, a through groove 620 is provided at the end of the guide groove 610, and the edge area of ​​the gear 820 passes through the through groove 620 and is connected and engaged with the chain 500.

[0049] In a further embodiment, such as Figure 7 As shown, a sponge block 900 is provided on the outside of the support plate 400. The sponge block 900 is impregnated with lubricating oil, and the sponge block 900 is pressed into the ball bearing 300.

[0050] Sponge block 900 is provided to lubricate ball bearing 300 and reduce wear on ball bearing 300.

[0051] Before each start-up of this brake disc flexibility online testing machine, the slider 200 is moved back and forth along the guide rail 100 for several empty strokes. The ball bearings 300 are lubricated by the sponge block 900 to prevent jamming between the guide rail 100 and the slider 200 during the testing process due to dry friction.

[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An online testing machine for brake disc flexibility, characterized in that, Includes a slide rail module, which includes: The guide rail has raceways on both sides, and the raceways extend along the length of the guide rail. The slider is slidably connected to the guide rail. Each raceway contains a number of balls, and the balls in the same raceway are evenly spaced apart, with the ball arrangement trajectory inclined to the length direction of the raceway.

2. The brake disc flexibility online testing machine according to claim 1, characterized in that, A support plate is provided on the inner side of the slider, and the length direction of the support plate is the same as the length direction of the slider. The balls are arranged at intervals and at an angle on the outer side of the support plate, and the balls are connected to the raceway in a rolling manner.

3. The brake disc flexibility online testing machine according to claim 2, characterized in that, A chain is connected to the outer side of the support plate. The chain is inclined along the length of the support plate, and balls are rolled on each link of the chain and are rolled in connection with the support plate.

4. The brake disc flexibility online testing machine according to claim 2, characterized in that, An annular guide frame is inclined on the outer side of the support plate, and a chain is slidably sleeved inside the annular guide frame, with balls rolling on each link of the chain.

5. The brake disc flexibility online testing machine according to claim 4, characterized in that, The annular guide frame can reciprocate within a preset distance along the width of the support plate.

6. The brake disc flexibility online testing machine according to claim 5, characterized in that, A linear drive element is provided on the support plate. The axis of the drive end of the linear drive element is perpendicular to the line containing the length direction of the support plate, and the drive end of the linear drive element is connected to the annular guide frame.

7. The brake disc flexibility online testing machine according to claim 4, characterized in that, The support plate is equipped with a rotation drive assembly, which is used to drive the chain to rotate circumferentially around the annular guide frame.

8. The brake disc flexibility online testing machine according to claim 7, characterized in that, The drive assembly includes a motor and a gear. The motor is mounted inside the support plate, and the gear is sleeved on the output shaft of the motor. The gear and the output shaft of the motor can rotate synchronously around the axis of the gear and slide relative to each other along the axis of the gear. The gear is connected to the chain drive.

9. The brake disc flexibility online testing machine according to claim 8, characterized in that, The support plate is equipped with a sponge block on the outside, which is impregnated with lubricating oil, and the sponge block is pressed into the ball bearing.

10. The brake disc flexibility online testing machine according to claim 1, characterized in that, It also includes a testing mechanism, which is connected to the slider.

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