Wheel-guided ball sorting device and method

Abstract

The application provides a kind of pulley guide steel ball sorting device and method, device includes: wobble clearance measuring part, wobble clearance measuring part is used to measure the wobble clearance between pulley dynamic disc and static disc where pulley guide steel ball is placed;Wobble clearance measuring part includes wobble clearance measuring mechanism, couple acting mechanism, first clamping mechanism;Wobble clearance measuring mechanism measures the wobble clearance between pulley dynamic disc and static disc when pulley wobbles;Resistance measuring part, resistance measuring part is used to measure the sliding resistance of pulley guide steel ball;Resistance measuring part includes resistance measuring mechanism, second lifting mechanism, second clamping mechanism;Resistance measuring mechanism measures the sliding resistance of pulley when pulley moves up and down;Sorting control part, sorting control part is used to determine the size of pulley guide steel ball corresponding to sorting pulley according to wobble clearance and sliding resistance.The application solves the technical problem that the consistency is poor in the existing pulley guide steel ball sorting process and the matching degree with pulley is low, improves the quality of pulley after assembling pulley guide steel ball, and ensures the transmission performance of transmission.

Description

Technical Field

[0001] This application relates to the field of measurement, and more particularly to a wheeled guide steel ball sorting device and method. Background Technology

[0002] A CVT transmission, also known as a continuously variable transmission, automatically changes the transmission ratio of its pulleys within a wide range during operation. A CVT consists of a driving pulley, a driven pulley, and a steel belt running between them. To achieve automatic transmission ratio changes, the moving parts of the driving and driven pulleys move relative to their fixed parts on a specific drive shaft, causing a change in the transmission diameter of each pulley. One pulley's transmission diameter increases, while the other's decreases, ultimately changing the transmission ratio. To facilitate accurate movement and transmission of the driving and driven pulleys on the drive shaft, an axial guiding device is provided. This device has guide balls in guide grooves to transmit torque.

[0003] To ensure smooth movement of the pulley within the guiding device and high-quality transmission performance, the size of the pulley guide steel ball needs to be matched with the guide groove. Specifically, the diameter of the pulley guide steel ball must match the width of the guide groove. If the diameter of the pulley guide steel ball is too small, the gap will be too large, compromising transmission performance. If the diameter of the pulley guide steel ball is too large, the frictional resistance at the contact point between the pulley guide steel ball and the guide groove will be too high, hindering smooth movement and thus preventing the guiding and accurate control of the transmission ratio. Due to manufacturing errors, there are slight differences in the size of pulley guide steel balls within the same batch. Therefore, the requirement for automatic transmission ratio adjustment in CVT transmissions places higher demands on the fit between the diameter of the pulley guide steel ball and the guide groove.

[0004] In existing technologies, the size of the pulley guide steel balls is determined by experienced technicians through visual inspection and judgment of actual CVT transmissions. This involves placing guide steel balls of a specific size in the guide groove by visual inspection and experience, manually moving the guide steel balls to feel the oscillation clearance and sliding resistance, and judging the fit based on experience. The optimal guide steel ball is then selected through repeated trials. With the further development of sensor technology, some technicians can measure the oscillation clearance during the trial process using sensors for reference. However, the existing methods for determining the diameter of the pulley guide steel balls are primarily manual or using simple measuring devices, requiring significant labor and heavily relying on the experience of technicians. The measurement process is largely dependent on experience and human perception, resulting in poor accuracy and consistency in standards, and poor quality stability after assembly. Summary of the Invention

[0005] In view of this, this application provides a wheel-guided steel ball sorting device and method to solve the technical problems of the prior art, which requires a large amount of labor, has a low matching degree between the wheel-guided steel balls and the wheel, and has poor consistency.

[0006] The first aspect of the present invention provides a wheeled guide steel ball sorting device, comprising:

[0007] The swing gap measuring unit is used to measure the swing gap of the pulley on which the pulley guide steel ball is placed;

[0008] The swing gap measuring unit includes a swing gap measuring mechanism, a couple action mechanism, and a first clamping mechanism; the couple action mechanism applies a torque to the pulley with the pulley guide steel ball clamped by the first clamping mechanism, causing the pulley to swing; the swing gap measuring mechanism measures the swing gap between the moving plate and the stationary plate of the pulley when the pulley swings;

[0009] A resistance measuring unit is provided for measuring the sliding resistance of the guide steel ball of the pulley.

[0010] The resistance measuring unit includes a resistance measuring mechanism, a second lifting mechanism, and a second clamping mechanism; the second lifting mechanism drives the pulley with the pulley guide steel ball clamped by the second clamping mechanism to move up and down; the resistance measuring mechanism measures the sliding resistance of the pulley when the pulley moves up and down;

[0011] The sorting control unit is used to determine the size of the guide steel ball of the pulley corresponding to the sorted pulley based on the swing gap and the sliding resistance.

[0012] In some embodiments, the first clamping mechanism includes a flexible clamping mechanism and a locking mechanism;

[0013] The flexible clamping mechanism includes a force-applying mechanism and a clamping rod arranged opposite to it. The force-applying mechanism and the clamping rod are flexibly connected by a wedge. The curvature of the clamping rod is less than the curvature of the pulley.

[0014] The locking mechanism includes a sliding bearing and an inverted conical surface. The locking mechanism locks the starting position of the clamping mechanism and constrains or releases the relative degrees of freedom of the clamping mechanism.

[0015] In some embodiments, the pulley includes a moving pulley disc and a stationary pulley disc; the clamping mechanism includes a stationary pulley disc clamping mechanism and a moving pulley disc clamping mechanism; the couple action mechanism applies a force to the moving pulley disc clamping mechanism, causing the moving pulley disc to move relative to the stationary pulley disc.

[0016] In some embodiments, the swing gap measuring mechanism includes two displacement sensors respectively disposed on the stationary disc clamping mechanism and the moving disc clamping mechanism, and the swing gap between the moving disc and the stationary disc is determined by the relative position difference between the two displacement sensors.

[0017] Alternatively, a standard point can be set on one clamping mechanism and a sensor can be set on another clamping mechanism. The swing gap between the moving plate and the stationary plate of the pulley can be determined by the relative position difference between the standard point and the sensor.

[0018] In some embodiments, the swing gap measuring unit further includes a first lifting mechanism, which is used to move the pulley with the pulley guide ball to the first clamping mechanism.

[0019] In some embodiments, the second clamping mechanism includes a base, a pneumatic gripper, a linear slider, an arm, a clamping wheel assembly, and a pressure wheel assembly;

[0020] The pneumatic gripper is flexibly connected to the lower part of the base, and the pneumatic gripper is used to grip the moving disc of the pulley;

[0021] The pneumatic gripper is flexibly connected to the outside of the connection position with the base via a ball guide rail;

[0022] The symmetrically arranged clamping wheel assembly is connected to the boom hinge.

[0023] The clamping wheel assembly is connected to the bottom of the clamping wheel assembly;

[0024] The clamping wheel assembly and the pressure wheel assembly are used to maintain the stability of the pulley when it moves up and down.

[0025] In some embodiments, the second lifting mechanism includes a servo mechanism; the pulley includes a driving pulley and a driven pulley;

[0026] When the servo mechanism drives the active pulley and the passive pulley to move up and down, it adapts to the length difference between the active pulley and the passive pulley.

[0027] In some embodiments, the resistance measuring mechanism connects the servo mechanism and the second clamping mechanism via hinges in two directions to measure the sliding resistance when the servo mechanism drives the pulley to move up and down at a constant speed.

[0028] A second aspect of the present invention provides a method for sorting steel balls guided by pulleys, employing any of the above-described wheeled steel ball sorting devices, comprising:

[0029] Construct a mapping relationship for any standard steel ball, the mapping relationship including the mapping between the swing clearance and the size of the guide steel ball of the pulley;

[0030] Place the pulley containing the standard steel ball into the swing clearance measuring unit and measure the swing clearance between the moving and stationary discs of the pulley.

[0031] If the swing gap falls into the mapping relationship corresponding to the standard steel ball, the pulley guide steel ball of the size determined according to the mapping relationship will be placed into the pulley;

[0032] The pulley is placed into the resistance measuring unit to measure the sliding resistance of the pulley;

[0033] If the sliding resistance meets the sliding resistance threshold, then the pulley guide steel ball is selected as the pulley guide steel ball corresponding to the pulley.

[0034] In some embodiments, if the swing gap does not fall into the mapping relationship corresponding to the standard steel ball, a new standard steel ball is selected, and the pulley with the standard steel ball is placed in the swing gap measuring unit to measure the swing gap between the moving plate and the stationary plate of the pulley until the swing gap between the moving plate and the stationary plate of the pulley corresponding to the standard steel ball placed in the pulley falls into the mapping relationship.

[0035] The present invention provides a belt pulley guide steel ball sorting device and method, which uses the swing gap and sliding resistance between the moving and stationary discs of the belt pulley to sort belt pulley guide steel balls that are compatible with the belt pulley. The measurement process is standardized, fast and accurate, and improves the quality of the belt pulley after the belt pulley guide steel balls are assembled. Attached Figure Description

[0036] Figure 1 A front view of a wheeled guide steel ball sorting device provided for an exemplary embodiment;

[0037] Figure 2 A side view of a wheeled guide steel ball sorting device provided as an exemplary embodiment of the present invention;

[0038] Figure 3 A side view of the swing measurement area in the swing gap measuring section of a pulley-guided steel ball sorting device provided for an exemplary embodiment;

[0039] Figure 4 A top view of the swing measurement area in the swing gap measuring section of a pulley-guided steel ball sorting device provided for an exemplary embodiment;

[0040] Figure 5 A side view of the clamping area of ​​the sliding resistance measuring section of a wheeled guide steel ball sorting device provided for an exemplary embodiment;

[0041] Figure 6 A flowchart of a wheel-guided steel ball sorting method provided for an exemplary embodiment. Detailed Implementation

[0042] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0043] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0044] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] 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.

[0048] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0049] In existing manufacturing processes, due to manufacturing errors, the designed dimensions of the pulley guide groove and the pulley guide ball differ from their actual dimensions. If the pulley and corresponding guide ball are only matched according to the design dimensions, problems such as poor movement or excessive clearance can easily occur, leading to inconsistent quality of the transmission. The manual testing methods used in existing technologies require a large amount of labor, and it is difficult to standardize the selection criteria.

[0050] In view of this, the present invention provides a wheel guide steel ball sorting device and method, which uses the swing gap and sliding resistance between the wheel moving plate and the stationary plate to sort wheel guide steel balls that are compatible with the wheel. The measurement process is standardized, fast and accurate, and improves the product quality after successful assembly.

[0051] Figure 1 A front view of a wheeled guide steel ball sorting device provided for an exemplary embodiment; Figure 2 A side view of a wheeled guide steel ball sorting device provided for an exemplary embodiment of the present invention.

[0052] Please refer to Figures 1-2 An exemplary embodiment of the pulley-guided steel ball sorting device includes: a swing clearance measuring unit 100, a resistance measuring unit 200, and a sorting control unit. Specifically:

[0053] The swing gap measuring unit 100 is used to measure the swing gap between the moving and stationary discs of a pulley on which the pulley guide steel ball is placed. The swing gap measuring unit 100 includes a swing gap measuring mechanism 3, a torque action mechanism 2, and a first clamping mechanism 1; the torque action mechanism 2 applies a torque to the pulley on which the pulley guide steel ball is placed, which is clamped by the first clamping mechanism 1, causing the pulley to swing; the swing gap measuring mechanism 3 measures the swing gap between the moving and stationary discs of the pulley when the pulley swings.

[0054] The resistance measuring unit 200 is used to measure the sliding resistance of the guide steel ball of the pulley. The resistance measuring unit 200 includes a resistance measuring mechanism 20, a second lifting mechanism 9, and a second clamping mechanism 6; the second lifting mechanism 9 drives the pulley with the guide steel ball of the pulley, which is clamped by the second clamping mechanism 6, to move up and down; the resistance measuring mechanism 20 measures the sliding resistance of the pulley when the pulley moves up and down.

[0055] The sorting control unit is used to determine the size of the guide steel ball of the pulley corresponding to the sorted pulley based on the swing gap and the sliding resistance.

[0056] Understandably, the sorting control unit can be implemented based on common controllers, such as PLCs and microcontrollers. The controller controls the motors or any moving mechanisms involved in the swing gap measuring unit 100 and the resistance measuring unit 200 to complete each work process according to the measurement sequence, and performs data acquisition and necessary data processing on the signals emitted by the sensors 19 involved in the swing gap measuring unit 100 and the resistance measuring unit 200.

[0057] The pulley guide steel ball sorting device provided in this embodiment measures the swing clearance between the moving and stationary discs of the pulley containing the pulley guide steel balls using a clearance measuring unit, and measures the sliding resistance of the pulley containing the pulley guide steel balls using a resistance measuring unit 200. Combining the swing clearance and sliding resistance, the size of the pulley guide steel balls installed in the pulley is determined. This invention avoids errors caused by tolerances or other reasons during the assembly process, which could lead to poor fit between the pulley guide steel balls and the pulley based on the design. This improves the matching between the pulley and the corresponding pulley guide steel balls, enhancing the stability of the pulley's quality while ensuring sorting efficiency.

[0058] Figure 3 A side view of the swing measurement area in the swing gap measuring section of a pulley-guided steel ball sorting device provided for an exemplary embodiment; Figure 4 A top view of the swing measurement area in the swing gap measuring section of a wheeled guide steel ball sorting device provided for an exemplary embodiment.

[0059] Please refer to Figures 3-4The first clamping mechanism 1 includes a flexible clamping mechanism and a locking mechanism. The clamping mechanism 12 includes a force-applying mechanism and a clamping rod arranged opposite to it, wherein the force-applying mechanism and the clamping rod are flexibly connected by a wedge.

[0060] The curvature of the clamping rod is less than that of the pulley, so that the clamping rod only contacts the moving and stationary pulley discs in a portion of the vertical swing direction. This avoids excessive contact and constraint between the clamping rod and the moving and stationary pulley discs, which would result in a smaller relative displacement of the swing when the same force is applied to make the moving and stationary pulley discs swing, thus affecting the sorting accuracy.

[0061] The locking mechanism 11 includes a sliding bearing and a conical surface. The locking mechanism 11 locks the starting position of the clamping mechanism 12, constraining or releasing the degrees of freedom of the clamping mechanism 12, preventing the clamping mechanism holding the pulley equipped with the pulley guide steel balls from being in a completely horizontal and concentric position. When the clamping mechanism holding the pulley equipped with the pulley guide steel balls has a certain angle in the vertical direction, even if the couple action mechanism 2 applies a horizontal force to the clamping mechanism to cause it to swing, the swing of the clamping mechanism will still have a vertical component, causing errors in the measured swing gap, thus affecting the accuracy of the pulley guide steel ball sorting. The locking mechanism 11, formed by the sliding bearing and the conical surface, allows the clamping mechanism to maintain a horizontal starting state, constraining or releasing the degrees of freedom of the relative movement of the clamping mechanism, avoiding angular deviations or relative positional deviations in the vertical direction that would affect the measurement results.

[0062] In some embodiments, the pulley includes a moving pulley disc and a stationary pulley disc, and the clamping mechanism includes a vertically arranged stationary pulley disc clamping mechanism and a moving pulley disc clamping mechanism. When the pulley is placed in the clamping mechanism and sorting begins, the force-applying mechanism drives the clamping rod to clamp the pulley, causing the vertically arranged stationary pulley disc clamping mechanism and the moving pulley disc clamping mechanism to respectively clamp the outer surfaces of the stationary pulley disc and the moving pulley disc. To maintain the stability of the clamping, if necessary, an amplification mechanism can be provided between the force-applying mechanism and the clamping mechanism to allow a larger clamping force to act on the moving pulley disc and the stationary pulley disc, thereby obtaining a more stable clamping effect.

[0063] The couple action mechanism 2 applies a force to the pulley moving plate clamping mechanism, causing the pulley moving plate to move relative to the pulley stationary plate, thus causing the pulley moving plate to oscillate.

[0064] In some embodiments, the swing gap between the moving and stationary discs of the pulley is determined by installing sensors 19, which can determine the relative displacement, on two clamping mechanisms respectively. The above-described geometric measurement method, which considers the reciprocating motion, uses the relative displacement distance as the swing gap, eliminating the influence of unnecessary displacement gaps and ensuring measurement accuracy.

[0065] For example, the swing gap measuring mechanism 3 includes two displacement sensors 19 respectively disposed on the stationary disc clamping mechanism and the moving disc clamping mechanism. The swing gap between the moving disc and the stationary disc is determined by the relative position difference between the two displacement sensors 19.

[0066] For example, the swing gap measuring mechanism 3 includes a standard point and a sensor 19. Specifically, the standard point is set on one clamping mechanism and the sensor 19 is set on another clamping mechanism. The swing gap between the moving plate and the stationary plate of the pulley is determined by the relative position difference between the standard point and the follower sensor 19.

[0067] It is understood that the swing gap measuring unit 100 also includes a first lifting mechanism 4, which is used to move the pulley with the pulley guide steel ball to the first clamping mechanism 1. The first lifting mechanism 4 may include a cylinder to lift the pulley.

[0068] When the swing gap measuring unit 100 is activated, the first lifting mechanism 4 moves the pulley moving plate and the pulley stationary plate, with the guide steel balls of the pulley to be measured, along the mounting frame 5 to the clamping mechanism, so that the pulley moving plate and the pulley stationary plate are placed inside the clamping mechanism. At the same horizontal height, the couple action mechanism 2 applies a force to the pulley moving plate clamping mechanism, causing the pulley moving plate to move relative to the pulley stationary plate, causing the pulley moving plate to swing. The swing gap measuring mechanism 3 measures the swing gap of the pulley and sends the measured swing gap to the sorting control unit.

[0069] Figure 5 A side view of the clamping area of ​​the sliding resistance measuring section of a wheeled guide steel ball sorting device provided for an exemplary embodiment.

[0070] Please refer to Figure 5 The second clamping mechanism 6 includes a base 13, a pneumatic gripper 14, a linear slider 16, an arm 18, a clamping wheel assembly 15, and a pressure wheel assembly 17.

[0071] The pneumatic gripper 14 is flexibly connected to the lower part of the base 13, and the pneumatic gripper 14 is used to grip the moving disc of the pulley.

[0072] The pneumatic gripper 14 is flexibly connected to the outside of the connection position with the base 13 via a ball guide rail. The symmetrically arranged clamping wheel assembly is hinged to the arm 18. The pressure wheel assembly 17 is connected to the bottom of the clamping wheel assembly 15. The clamping wheel assembly 15 and the pressure wheel assembly 17 are used to maintain the stability of the pulley during up and down movement.

[0073] In some embodiments, the second lifting mechanism 9 includes a servo mechanism; the pulley includes a driving pulley and a driven pulley. The servo mechanism can be a ball screw servo loading mechanism 7, which, when mounted on the cylinder-driven lifting structure, drives the driving pulley and the driven pulley to move up and down, can adapt to the length difference between the driving pulley and the driven pulley.

[0074] Specifically, the resistance measuring mechanism 20 connects the servo mechanism and the second clamping mechanism 6 through hinges in two directions, and measures the sliding resistance when the servo mechanism drives the pulley to move up and down at a constant speed, so as to avoid adding unnecessary dynamic forces and affecting the measurement accuracy.

[0075] When the pulley with the guide steel ball is placed, the sliding resistance measurement is started. The size of the brake pulley and the driven pulley is adapted by adjusting the clamping wheel group 15 and the pressure wheel to make the driving pulley and the driven pulley stably fixed in the second clamping mechanism 6.

[0076] The second clamping mechanism 6 moves downward, positioning the pulley with a center point. The pneumatic gripper 14 of the second clamping mechanism 6 grips the movable disc of the pulley, driving the pulley up and down via a servo motor or other drive method. At this time, the sliding resistance of the pulley is measured by the resistance measuring mechanism 20 connected to the servo mechanism and the second clamping mechanism 6, and the measured sliding resistance is sent to the sorting control unit.

[0077] This embodiment provides a pulley-guided steel ball sorting device that uses the swing gap and sliding resistance between the moving and stationary discs of the pulley to sort pulley-guided steel balls suitable for the pulley. The measurement process is standardized, fast, and accurate, improving the quality of the product after successful assembly. The swing gap is measured using a follow-up relative displacement to eliminate unnecessary gap errors. The flexible clamping mechanism makes this embodiment highly compatible with the pulleys under test, enabling it to accommodate measurements of various sizes.

[0078] The above is a detailed description of a wheeled guide steel ball sorting device provided by the present invention. Next, a wheeled guide steel ball sorting method provided by the present invention will be described. The structure of the device used is the same as that of the wheeled guide steel ball sorting device provided in any of the above embodiments, and will not be repeated here.

[0079] Figure 6 A flowchart of a wheel-guided steel ball sorting method provided for an exemplary embodiment.

[0080] Please refer to Figure 6 A method for sorting steel balls with pulley guides includes:

[0081] S601. Construct a mapping relationship for any standard steel ball, wherein the mapping relationship includes the mapping between the swing clearance and the size of the guide steel ball of the pulley.

[0082] An exemplary mapping relationship is shown in Table 1. When using standard steel ball No. 1, the corresponding swing gap of standard steel ball No. 1 can be A1 to A2, A2 to A3, etc. For example, when the swing gap of steel ball No. 1 is A1 to A2, a guide steel ball of size L1 is used; when the swing gap of steel ball No. 1 is A2 to A3, a guide steel ball of size L2 is used. When a guide steel ball of size L1 is used, its corresponding sliding resistance range is F1 to F2. Similarly, when a guide steel ball of size L2 is used, its corresponding sliding resistance range is F2 to F3. For any standard steel ball such as standard steel ball No. 2 and standard steel ball No. 3, a mapping is established for its corresponding swing gap, guide steel ball size, and sliding resistance range, forming a mapping relationship for any standard steel ball.

[0083] Table 1. Mapping Relationships for Standard Steel Balls

[0084] Standard steel ball Swing gap Guide ball size Sliding resistance range 1 A1-A2 L1 F1-F2 1 A2-A3 L2 F2-F3 …… 2 …… 3 ……

[0085] S602. Place the pulley containing the standard steel ball into the swing clearance measuring unit and measure the swing clearance of the pulley.

[0086] Specifically, in conjunction with the guide steel ball sorting device provided in the above embodiment, when the swing gap measuring unit 100 is activated, the first lifting mechanism 4 moves the pulley moving plate and pulley stationary plate, on which the pulley guide steel ball to be measured is placed, along the mounting frame 5 to the clamping mechanism, so that the pulley moving plate and pulley stationary plate are placed inside the clamping mechanism. At the same horizontal height, the force couple action mechanism 2 applies a force to the pulley moving plate clamping mechanism, causing the pulley moving plate to move relative to the pulley stationary plate, causing the pulley moving plate to swing. The swing gap measuring mechanism 3 measures the swing gap of the pulley swing and sends the measured swing gap to the sorting control unit.

[0087] S603. If the swing gap falls into the mapping relationship corresponding to the standard steel ball, the pulley guide steel ball of the size determined according to the mapping relationship is placed into the pulley.

[0088] In some embodiments, if the swing gap does not fall into the mapping relationship corresponding to the standard steel ball, a new standard steel ball is selected, and the pulley with the standard steel ball is placed in the swing gap measuring unit 100 to measure the swing gap between the moving plate and the stationary plate of the pulley until the swing gap between the moving plate and the stationary plate of the pulley corresponding to the standard steel ball placed in the pulley falls into the mapping relationship.

[0089] S604. Place the pulley into the resistance measuring unit and measure the sliding resistance of the pulley. Verify whether the pulley guide steel ball, whose size is determined based on the swing clearance of the standard steel ball in the pulley, is suitable for the pulley by checking the sliding resistance.

[0090] Specifically, in conjunction with the guide steel ball sorting device provided in the above embodiments, when the pulley containing the guide steel balls begins to measure the sliding resistance, the clamping wheel assembly 15 and the pressure wheel are adjusted to adapt to the dimensions of the brake pulley and the driven pulley, so that the driving pulley and the driven pulley are stably fixed in the second clamping mechanism 6. The second clamping mechanism 6 moves down, using a center to position the pulley, and the pneumatic gripper 14 of the second clamping mechanism 6 grips the movable disc of the pulley, driving the pulley up and down through a servo motor or other driving method. At this time, the sliding resistance of the pulley is measured by the resistance measuring mechanism 20 connected to the servo mechanism and the second clamping mechanism 6, and the measured sliding resistance is sent to the sorting control unit.

[0091] S605. If the sliding resistance meets the sliding resistance threshold, then the pulley guide steel ball is sorted as the pulley guide steel ball corresponding to the pulley.

[0092] This embodiment provides a method for sorting guide steel balls for pulleys. The method uses the oscillation gap between the moving and stationary discs of a pulley containing standard steel balls to initially determine the guide steel balls suitable for the pulley. Then, based on the sliding resistance, it verifies whether the guide steel balls meet the compatibility requirements of the pulley, thereby achieving the sorting of the guide steel balls. The guide steel ball sorting method provided in this embodiment features a consistent, fast, and accurate measurement process, improving the quality of the pulley after the guide steel balls are assembled.

[0093] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are described simply because they are used to implement the method embodiments; relevant parts can be referred to the descriptions of the method embodiments.

[0094] The above description is merely an embodiment of this specification and is not intended to limit this specification. Various modifications and variations can be made to this specification by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of the claims of this specification.

Claims

1. A wheeled guide steel ball sorting device, characterized in that, include: The swing gap measuring unit is used to measure the swing gap between the moving plate and the stationary plate of the pulley, on which the pulley guide steel ball is placed; The swing gap measuring unit includes a swing gap measuring mechanism, a couple action mechanism, and a first clamping mechanism; the couple action mechanism applies a torque to the pulley with the pulley guide steel ball clamped by the first clamping mechanism, causing the pulley to swing; the swing gap measuring mechanism measures the swing gap between the moving plate and the stationary plate of the pulley when the pulley swings; A resistance measuring unit is provided for measuring the sliding resistance of the guide steel ball of the pulley. The resistance measuring unit includes a resistance measuring mechanism, a second lifting mechanism, and a second clamping mechanism; the second lifting mechanism drives the pulley with the pulley guide steel ball clamped by the second clamping mechanism to move up and down; the resistance measuring mechanism measures the sliding resistance of the pulley when the pulley moves up and down; The sorting control unit is used to determine the size of the guide steel ball of the pulley corresponding to the sorted pulley based on the swing gap and the sliding resistance.

2. The wheeled guide steel ball sorting device according to claim 1, characterized in that, The first clamping mechanism includes a clamping mechanism and a locking mechanism; The clamping mechanism includes a force-applying mechanism and a clamping rod arranged opposite to it. The force-applying mechanism and the clamping rod are flexibly connected by a wedge. The curvature of the clamping rod is less than the curvature of the pulley. The locking mechanism includes a sliding bearing and an inverted conical surface. The locking mechanism locks the starting position of the clamping mechanism and constrains or releases the relative degrees of freedom of the clamping mechanism.

3. The pulley-guided steel ball sorting device according to claim 2, characterized in that, The pulley includes a moving pulley disc and a stationary pulley disc; the clamping mechanism includes a stationary pulley disc clamping mechanism and a moving pulley disc clamping mechanism; the force couple mechanism applies a force to the moving pulley disc clamping mechanism, causing the moving pulley disc to move relative to the stationary pulley disc.

4. The pulley-guided steel ball sorting device according to claim 3, characterized in that, The swing gap measuring mechanism includes two displacement sensors respectively installed on the stationary disc clamping mechanism and the moving disc clamping mechanism. The swing gap between the moving disc and the stationary disc is determined by the relative position difference between the two displacement sensors. Alternatively, a standard point can be set on one clamping mechanism and a sensor can be set on another clamping mechanism. The swing gap between the moving plate and the stationary plate of the pulley can be determined by the relative position difference between the standard point and the sensor.

5. The pulley-guided steel ball sorting device according to claim 1, characterized in that, The swing gap measuring unit further includes a first lifting mechanism, which is used to move the pulley with the pulley guide steel ball to the first clamping mechanism.

6. The wheeled guide steel ball sorting device according to claim 1, characterized in that, The second clamping mechanism includes a base, a pneumatic gripper, a linear slider, an arm, a clamping wheel assembly, and a pressure wheel assembly; The pneumatic gripper is flexibly connected to the lower part of the base, and the pneumatic gripper is used to grip the moving disc of the pulley; The pneumatic gripper is flexibly connected to the outside of the connection position with the base via a ball guide rail; The symmetrically arranged clamping wheel assembly is connected to the boom hinge. The clamping wheel assembly is connected to the bottom of the clamping wheel assembly; The clamping wheel assembly and the pressure wheel assembly are used to maintain the stability of the pulley when it moves up and down.

7. The pulley-guided steel ball sorting device according to claim 6, characterized in that, The second lifting mechanism includes a servo mechanism; the pulley includes a driving pulley and a driven pulley; When the servo mechanism drives the active pulley and the passive pulley to move up and down, it adapts to the length difference between the active pulley and the passive pulley.

8. The pulley-guided steel ball sorting device according to claim 7, characterized in that, The resistance measuring mechanism connects the servo mechanism and the second clamping mechanism through hinges in two directions, and measures the sliding resistance when the servo mechanism drives the pulley to move up and down at a constant speed.

9. A method for sorting steel balls guided by pulleys, characterized in that, The wheeled guide steel ball sorting device as described in any one of claims 1-8 includes: Construct a mapping relationship for any standard steel ball, the mapping relationship including the mapping between the swing clearance and the size of the guide steel ball of the pulley; Place the pulley containing the standard steel ball into the swing clearance measuring unit and measure the swing clearance between the moving and stationary discs of the pulley. If the swing gap falls into the mapping relationship corresponding to the standard steel ball, the pulley guide steel ball of the size determined according to the mapping relationship will be placed into the pulley; Place the pulley into the resistance measuring unit and measure the sliding resistance of the pulley; If the sliding resistance meets the sliding resistance threshold, then the pulley guide steel ball is selected as the pulley guide steel ball corresponding to the pulley.

10. The method for sorting steel balls with pulley guides according to claim 9, characterized in that, If the swing gap does not fall into the mapping relationship corresponding to the standard steel ball, a new standard steel ball is selected, and the pulley with the standard steel ball is placed in the swing gap measuring unit. The swing gap between the moving plate and the stationary plate of the pulley is measured until the swing gap between the moving plate and the stationary plate of the pulley corresponding to the standard steel ball placed in the pulley falls into the mapping relationship.

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