Gantry moving type bearing press-fitting system and press-fitting method

Abstract

The invention discloses a gantry moving type bearing press-fitting system and method, and the system comprises a base platform which is used for positioning and placing a to-be-press-fitted pulley assembly; the movable portal frame is arranged on the base platform and can move in the length direction of the base platform; the press-fitting device is arranged at the top of the movable portal frame and located above the base platform, the movable portal frame is used for moving the press-fitting device to a corresponding press-fitting station on the base platform, and the press-fitting device is used for press-fitting the bearing into the pulley assembly; the detection device is used for detecting press-fitting data of the press-fitting device; the control system is connected with the movable portal frame, the press-fitting device and the detection device and used for receiving detection information of the detection device, controlling the movable portal frame to move and regulating and controlling the press-fitting device to conduct press-fitting. The press-fitting precision and the production efficiency are improved, the press-fitting quality can be guaranteed, and the press-fitting device is suitable for press-fitting of bearings of different specifications of the pulley assembly.

Description

Technical Field

[0001] The present application relates to the press-fitting of bearings of a pulley assembly of a port machinery, and in particular to a gantry movable bearing press-fitting system and a press-fitting method. Background Art

[0002] Traditionally, the press-fitting of bearings in pulley assemblies for port machinery relies on manual hammering, resulting in low assembly precision, high risk of impact damage, poor environmental compatibility, and low efficiency. Existing bearing press-fitting equipment also suffers from inconvenient operation, reliance on manual intervention and adjustment, low efficiency, unstable press-fit quality, and high energy consumption. This equipment is unable to adapt to the press-fitting of bearings of varying specifications in pulley assemblies, failing to meet the production needs of port machinery and hindering its development and green transformation. Summary of the Invention

[0003] The purpose of this application is to propose a gantry movable bearing press-fitting system and press-fitting method to improve the press-fitting accuracy and production efficiency, ensure the press-fitting quality, and be suitable for the press-fitting of bearings of different specifications in pulley assemblies.

[0004] In order to solve at least one of the above technical problems, the technical solution of this application is as follows:

[0005] According to the first aspect of the present application, a gantry movable bearing pressing system is provided, comprising: a base platform for positioning and placing a pulley assembly to be pressed; a movable gantry, which is arranged on the base platform and can move along the length direction of the base platform; a pressing device, which is arranged on the top of the mobile gantry and is located above the base platform, and the mobile gantry is used to move the pressing device to a corresponding pressing station on the base platform, and the pressing device is used to press the bearing into the pulley assembly; a detection device, which is used to detect the pressing data of the pressing device; a control system, which is respectively connected to the mobile gantry, the pressing device and the detection device, and is used to receive detection information of the detection device, control the movement of the mobile gantry, and regulate the pressing device for press fitting.

[0006] In a possible implementation of the first aspect above, the base platform includes: a placement platform, a base is provided at the bottom of the placement platform, and a plurality of positioning seats for positioning the pulley assembly are provided on the upper surface of the placement platform at intervals along its length direction.

[0007] In a possible implementation of the first aspect above, a centering detection device is provided on the base platform, and the centering detection device is used to detect the center of the pulley assembly and the bearing for centering. The centering detection device is also used to detect the center of the press-fitting device and the bearing for centering.

[0008] In a possible implementation of the first aspect above, the mobile gantry includes: a gantry body; two walking mechanisms, which are respectively arranged at the lower ends of both sides of the gantry body, and a base platform is provided with walking tracks corresponding to each walking mechanism along its length direction.

[0009] In a possible implementation of the first aspect above, each walking mechanism includes: a walking beam connected to the gantry body; walking wheels, arranged on the walking beam and cooperating with the corresponding walking track; and a first driving mechanism, arranged on the walking beam and connected to the walking wheels, for driving the walking wheels to move along the walking track.

[0010] In a possible implementation of the first aspect above, the length direction of each walking beam is consistent with the length direction of the walking track, and walking wheels are respectively provided at both ends of the length direction of each walking beam. The lower ends of both sides of the gantry body are respectively connected to the middle part of their corresponding walking beams, and each walking wheel is provided with a groove that matches the walking track.

[0011] In a possible implementation of the first aspect above, the lower ends of both sides of the gantry body are respectively provided with horizontal connecting parts connected to the middle part of their respective corresponding walking beams, the horizontal connecting parts are perpendicular to the walking beams to which they are connected, and the base platform is located between the two horizontal connecting parts. Walking channels connected to the walking beams are respectively provided on both sides of the length direction of the base platform, and two walking tracks are respectively arranged on the bottom surfaces of their respective corresponding walking channels, and the first driving mechanism is arranged in the walking beam.

[0012] In a possible implementation of the first aspect above, each walking beam is further provided with a counter-roller at both ends in the length direction, each counter-roller is used to cooperate with the top surface of its corresponding walking channel, and the two walking wheels on each walking beam are located between the two counter-rollers.

[0013] In a possible implementation of the first aspect above, each counter-roller is installed on a support, and connecting plates connected to the support are respectively provided at both ends in the length direction of each walking beam. A support seat that cooperates with the support is provided on each connecting plate, and an adjustment component is also provided on each support seat, which is used to adjust the height of the support.

[0014] In a possible implementation of the first aspect above, the press-fitting device includes: a press head, used to contact the bearing for press-fitting; and a second drive mechanism, connected to the press head, used to drive the press head to rise and fall.

[0015] In a possible implementation of the first aspect above, the detection device includes: a pressure sensor for detecting the pressure of the pressure head; a displacement sensor for detecting the displacement of the pressure head; wherein the pressure sensor and the displacement sensor are arranged on the pressure head, and the pressure head is in the shape of a circular plate. The control system adjusts the pressing parameters of the pressing device based on the detection information of the pressure sensor and the displacement sensor and the statistical process control module, and an alarm is also provided on the control system.

[0016] According to a second aspect of the present application, a bearing press-fitting method is provided, which is applied to the gantry movable bearing press-fitting system of the first aspect, comprising the following steps:

[0017] S1. Position the pulley assembly to be press-fitted on the base platform, and place the bearing in the press-fitting position of the pulley assembly;

[0018] S2. The control system controls the mobile gantry to move to the corresponding press-fitting station on the base platform so that the press-fitting device on the mobile gantry is located above the corresponding bearing;

[0019] S3. The control system controls the press-fitting device to perform press-fitting. During the press-fitting process, the detection device detects the press-fitting data of the press-fitting device and sends the detection information to the control system. The control system adjusts the press-fitting parameters of the press-fitting device based on the detection information of the detection device until the press-fitting is completed.

[0020] In a possible implementation of the second aspect, a centering detection device is provided on the base platform. In step S1, the center of the pulley assembly and the bearing are detected by the centering detection device and aligned so that the centers of the pulley assembly and the bearing coincide with each other.

[0021] In a possible implementation of the second aspect above, the mobile gantry includes a traveling mechanism. In step S2, the control system controls the traveling mechanism to move along a traveling track of the base platform.

[0022] In a possible implementation of the second aspect, the press-fitting device includes a second driving mechanism and a pressing head. In step S3, the control system controls the second driving mechanism to drive the pressing head to move up and down for press-fitting.

[0023] In a possible implementation of the second aspect above, the detection device includes a pressure sensor and a displacement sensor. In step S3, the pressure sensor detects the pressure of the pressure head, and the displacement sensor detects the displacement of the pressure head. The control system adjusts the pressing parameters of the pressing device based on the detection information of the detection device and the statistical process control module.

[0024] In a possible implementation of the second aspect, in step S3 , the press-fitting process sequentially includes a pre-pressing stage, a main pressing stage, and a pressure-holding stage.

[0025] In a possible implementation of the second aspect, in step S1, the size parameters of the bearing to be press-fitted are input through the control system;

[0026] In a possible implementation of the second aspect above, in step S3, after the pressing is completed, the control system performs quality traceability, compares the actual pressing curve with the pressing curve template pre-stored in the control system, and outputs a corresponding pass rate report.

[0027] The above technical solution of the present application has at least one of the following beneficial effects:

[0028] According to the gantry movable bearing pressing system of the present application, it includes a base platform, a mobile gantry, a pressing device, a detection device and a control system. The base platform is used to position and place the roller pulley assembly to be pressed. The pressing device is arranged on the top of the mobile gantry and above the base platform. The control system controls the mobile gantry to move to the corresponding pressing station along the length direction of the base platform. The control system controls the pressing device to press the bearing into the pulley assembly. The detection device is used to detect the pressing data of the pressing device and send the detection information to the control system. The control system can also adjust the pressing parameters of the pressing device in real time based on the detection information of the detection device, optimize the pressing curve of the bearing, and thus achieve accurate, efficient and stable pressing of the bearing. Therefore, the present application can achieve accurate, efficient and stable pressing of bearings, is easy to operate, greatly reduces manual intervention and adjustment, improves pressing accuracy and production efficiency, can ensure pressing quality, and can install bearings of different specifications into the pulley assembly according to the different requirements of the pulley assembly, adapt to the pressing of bearings of different specifications of the pulley assembly, meet the production needs of port machinery, and is conducive to the development and green transformation of port machinery.

[0029] In addition, in the technical solution of the present application, anything not specifically stated can be implemented by adopting conventional means in this field. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 This is a structural schematic diagram of a gantry movable bearing press-fitting system according to an embodiment of the present application;

[0032] Figure 2 This is a schematic structural diagram of a base platform according to an embodiment of the present application;

[0033] Figure 3 This is a structural diagram of a mobile gantry according to an embodiment of the present application;

[0034] Figure 4 This is a schematic structural diagram of a walking mechanism according to an embodiment of the present application;

[0035] Figure 5 A schematic flow chart of a bearing press-fitting method according to an embodiment of the present application.

[0036] Description of the reference numerals in the accompanying drawings:

[0037] Base platform 100; placement platform 110; base 120; positioning seat 130; walking track 140; walking channel 150;

[0038] Mobile gantry 200; gantry body 210, horizontal connection part 211; walking mechanism 220; walking beam 221; walking wheel 222; anti-roller 223; connecting plate 224; support 225; support base 226; adjustment assembly 227;

[0039] Pressing device 300; pressing head 310; second driving mechanism 320;

[0040] Control system 400;

[0041] Pulley assembly 500. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of this application more clear, the application is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are part of the embodiments of this application, rather than all of the embodiments, and are only used to explain this application and are not intended to limit this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0043] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer", "two ends", "both sides", "bottom", "top", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting this application. In addition, the terms "first", "second", "superior", "inferior", "primary", "secondary", etc. are used for descriptive purposes only and can be simply used to more clearly distinguish different components, but cannot be understood as indicating or implying relative importance.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0045] See also Figure 1 The figure schematically illustrates a gantry-type movable bearing press-fitting system according to an embodiment of the present application, primarily used in port machinery to install bearings into corresponding pulley assemblies. The system includes a base platform 100, a movable gantry 200, a press-fitting device 300, a detection device (not shown), and a control system 400.

[0046] Among them, the base platform 100 is used to position and place the pulley assembly 500 to be pressed, the mobile gantry 200 is set on the base platform 100, the mobile gantry 200 can move along the length direction of the base platform 100, the pressing device 300 is set on the top of the mobile gantry 200, the pressing device 300 is located above the base platform 100, the mobile gantry 200 is used to move the pressing device 300 to the corresponding pressing station on the base platform 100, the pressing device 300 is used to press the bearing into the pulley assembly 500, and the control system 400 can be set on the top of the mobile gantry 200 And it is close to the pressing device 300, the control system 400 is respectively connected to the mobile gantry 200, the pressing device 300 and the detection device (such as electrical connection, wireless communication connection, etc.), the control system 400 is used to receive the detection information of the pressing device 300, control the movement of the mobile gantry 200 and regulate the pressing device 300 for pressing, the detection device is used to detect the pressing data of the pressing device 300 during the pressing process, such as pressure data and displacement data, and send the detection information to the control system 400, and the control system 400 can adjust the pressing parameters of the pressing device 300 based on the detection information of the detection device.

[0047] A plurality of pulley assemblies 500 to be pressed can be positioned and positioned in sequence along the length direction of the base platform 100, so that a plurality of pressing stations are formed in sequence along the length direction of the base platform 100, and then the bearing to be pressed is placed at the pressing position of each pulley assembly 500, and then the control system 400 controls the movable gantry 200 to move to one of the pressing stations along the length direction of the base platform 100, so that the pressing device 300 is located above the corresponding bearing to be pressed, and then the control system 400 controls the pressing device 300 to press the bearing into the pulley assembly 500. During the pressing process, the detection device can detect the pressing data of the pressing device 300 in real time, and send the detection information to the control system 400. The control system 400 can adjust the pressing parameters of the pressing device 300 in real time based on the detection information of the detection device, optimize the pressing curve of the bearing, until the pressing of the bearing is completed, and then press the bearings at other pressing stations in sequence, thereby realizing accurate, efficient and stable pressing of the bearing.

[0048] Therefore, the gantry movable bearing pressing system of the present application can realize accurate, efficient and stable pressing of bearings, is easy to operate and highly flexible. The control system 400 can adjust the pressing parameters of the pressing device 300 in real time, optimize the pressing curve of the bearing, greatly reduce manual intervention and adjustment, improve the pressing accuracy and production efficiency, and ensure the pressing quality. Moreover, bearings of different specifications can be installed into the pulley assembly 500 according to the different requirements of the pulley assembly 500, and it is suitable for the pressing of bearings of different specifications of the pulley assembly 500, which can meet the production needs of port machinery and is conducive to the development and green transformation of port machinery.

[0049] In some embodiments, reference Figure 2 As shown, the base platform 100 includes a placement platform 110, with a base 120 disposed at the bottom of the placement platform 110. The length direction of the placement platform 110 is the length direction of the base platform 100. The upper surface of the placement platform 110 is sequentially spaced along its length and is provided with a plurality of positioning seats 130 for positioning the pulley assembly 500. The base platform 100 can be a frame structure formed by welding high-strength alloy steel, or it can be made of other suitable materials. The base 120 can be evenly distributed along the placement platform 110 to stably support the placement platform 110. The positioning seats 130 can be multiple and sequentially spaced along the length direction of the placement platform 110. The positioning seats 130 can be provided with a positioning structure for positioning the pulley assembly 500. The positioning structure can be a positioning groove or other suitable structure. The positioning seats 130 and the placement platform 110 can be detachably connected to facilitate replacement of different positioning seats 130 according to different pulley assemblies 500. In this way, the pulley assembly 500 can be placed stably, the movable gantry 200 can be carried more stably, and better press-fitting can be ensured.

[0050] In some embodiments, reference Figure 1As shown, the press-fitting device 300 includes a press head 310 and a second drive mechanism 320. The second drive mechanism 320 is connected to the press head 310 and can be a servo electric cylinder or other suitable drive mechanism. The second drive mechanism 320 is used to drive the press head 310 up and down so that the press head 310 contacts the bearing for press-fitting. The servo electric cylinder can use closed-loop control to facilitate precise control of thrust, speed, and telescopic length. The control system 400 controls the servo electric cylinder more accurately based on detection signals from the detection device. It can perform multi-level adaptive pressure adjustment based on the press-fitting requirements of different bearings to ensure press-fitting quality. The press head 310 and the second drive mechanism 320 can be detachably connected, facilitating the replacement of different press heads 310 according to different requirements. This improves press-fitting accuracy and enhances safety and reliability. Furthermore, the press head 310 and the second drive mechanism 320 can be detachably connected, facilitating the replacement of different press heads 310 according to specific conditions, such as the pulley assembly 500.

[0051] In some embodiments, reference Figure 1 As shown, a centering detection device (not shown in the figure) is provided on the base platform 100. The centering detection device is used to detect the center of the pulley assembly 500 and the bearing for centering. The centering detection device is also used to detect the center of the press-fitting device 300 and the bearing for centering. Among them, the centering detection device can use a laser centering instrument. The laser centering instrument is used to detect the center of the pulley assembly 500 and the bearing for centering, so that the pulley assembly 500 and the bearing are centered; the laser centering instrument is used to detect the center of the press-fitting device 300's ram 310 and the bearing for centering, so that the ram 310 and the center of the bearing to be press-fitted coincide with each other. For example, the coaxiality error between the ram 310 and the bearing to be press-fitted is less than 0.01mm. In this way, more precise press-fitting is ensured, which is better suitable for multi-station continuous operation.

[0052] In some embodiments, reference Figures 2-3As shown, the mobile gantry 200 includes: a gantry body 210 and two walking mechanisms 220. The two walking mechanisms 220 are respectively arranged at the lower ends of the two sides of the gantry body 210, and the base platform 100 is provided with walking rails 140 corresponding to each walking mechanism 220 along its length. The walking rails 140 can be made of high-strength alloy steel quenched and hardened linear rails. The surface of the walking rails 140 can be treated with anti-wear to extend the service life and better suited for multi-station continuous operation. The length of the walking rails 140 can be customized according to different needs, thereby adapting to the needs of different production scenarios. The control system 400 controls the two walking mechanisms 220 to move respectively along the two walking rails 140, so that the mobile gantry 200 moves as a whole along the length direction of the base platform 100. In this way, the mobile gantry 200 is ensured to move stably, friction is reduced, and energy consumption is reduced.

[0053] In some embodiments, reference Figures 3-4 As shown, each walking mechanism 220 includes: a walking beam 221, a walking wheel 222 and a first drive mechanism (not shown in the figure). Among them, the walking beam 221 is connected to the gantry body 210, the walking wheel 222 is arranged on the walking beam 221 and cooperates with the corresponding walking track 140, and the first drive mechanism is arranged on the walking beam 221 and connected to the walking wheel 222. The first drive mechanism is used to drive the walking wheel 222 to rotate, so that the walking wheel 222 moves along the walking track 140. Among them, the first drive mechanism can be directly driven by a driving member such as an electric motor or a motor, or can be driven by a driving member through a transmission mechanism such as a gear mechanism. The first drive can be arranged inside the walking beam 221 or outside the walking beam 221. The first drive mechanism is arranged inside the walking beam 221, has a small volume, and a more compact and stable structure. Thus, it is ensured that the walking mechanism 220 moves stably and reliably along the walking track 140, reducing friction and energy consumption.

[0054] In some embodiments, reference Figures 3-4 As shown, the length direction of each walking beam 221 is consistent with the length direction of the walking track 140. Each walking beam 221 is provided with a walking wheel 222 at both ends of the length direction. The lower ends of the two sides of the gantry body 210 are respectively connected to the middle part of the corresponding walking beam 221. Each walking wheel 222 is provided with a groove (not shown) that matches the walking track 140. The groove can be C-shaped in the axial cross-section of the walking wheel 222. As a result, the structure is more stable and reliable. The groove of the walking wheel 222 matches the walking track 140 and can also constrain the walking wheel 222, ensuring better movement of the mobile gantry 200.

[0055] In some embodiments, reference Figures 2-4As shown, the lower ends of the gantry body 210 are respectively provided with horizontal connecting parts 211 connected to the middle parts of their corresponding walking beams 221. The horizontal connecting parts 211 are perpendicular to the walking beams 221 to which they are connected. The base platform 100 is located between the two horizontal connecting parts 211. The base platform 100 is respectively provided with walking channels 150 connected to the walking beams 221 on both sides of the length direction. Two walking tracks 140 are respectively provided on the bottom surfaces of the corresponding walking channels 150. The first drive mechanism can be disposed within the walking beams 221. As a result, the structure is more compact and stable, and the operation is more convenient, thereby ensuring that the mobile gantry 200 moves more smoothly and accurately.

[0056] In some embodiments, reference Figure 4 As shown, each walking beam 221 is further provided with a counter-roller 223 at each end in the longitudinal direction. Each counter-roller 223 is configured to engage the top surface of the corresponding walking channel 150. The two walking wheels 222 on each walking beam 221 are located between the two counter-rollers 223. Thus, by providing the walking wheels 222 and the counter-roller 223 at each end in the longitudinal direction of the walking beam 221, the walking mechanism 220 is constrained in the walking channel 150, reducing friction, lowering noise, and achieving high movement precision. This reduces the need for frequent maintenance, making it suitable for long-term continuous operation at multiple stations and reducing energy consumption.

[0057] Specifically, refer to Figure 4 As shown, each counter-roller 223 is installed on a support 225, and connecting plates 224 connected to the support 225 are respectively provided at both ends of the length direction of each walking beam 221. The connecting plates 224 can be welded to the end of the walking beam 221, and the support 225 and the connecting plates 224 can be connected by fasteners such as bolts. Each connecting plate 224 is provided with a support seat 226 that cooperates with the support 225. The support seat 226 is located below the support 225. The support seat 226 and the connecting plate 224 can also be connected by fasteners such as bolts. Each support seat 226 is also provided with an adjustment component 227, and the adjustment component 227 is used to adjust the height of the support 225. For example, the adjustment assembly 227 can use a jackscrew arranged in the vertical direction. The jackscrews can be one, two, or more. Each jackscrew is threadedly connected to its corresponding support seat 226. The tail of each jackscrew faces upward and contacts the top of the support 225. Each jackscrew is also provided with a locking nut. The support 225 is connected to the connecting plate 224 by multiple bolts. The connecting plate 224 is provided with waist-shaped holes corresponding to the multiple bolts. The length direction of each waist-shaped hole is consistent with the vertical direction. By rotating the jackscrew, the support 225 is pushed upward, thereby adjusting the height of the support 225. This makes operation more convenient and quick, and facilitates maintenance.

[0058] In some embodiments, the detection device includes a pressure sensor and a displacement sensor. The pressure sensor is used to detect the pressure of the pressure head 310 and transmit the detected pressure information to the control system 400. The displacement sensor is used to detect the displacement of the pressure head 310 (such as the extension and contraction of the servo cylinder) and transmit the detected displacement information to the control system 400. The pressure sensor and the displacement sensor can be installed on the pressure head 310, which can be in the shape of a circular plate. The control system 400 can also be provided with an alarm, which can be an audible or visual alarm.

[0059] During the press-fitting process, pressure sensors and displacement sensors monitor the pressure and displacement of the press head 310 in real time. Based on this information and the statistical process control module, the control system 400 adjusts the press-fitting parameters of the press-fitting device 300, dynamically optimizing the bearing's press-fitting curve and achieving a precise match between the pressure and displacement of the press head 310. This eliminates impact loads, improves the pressure safety factor, avoids overload damage to the workpiece, and ensures damage-free press-fitting of the bearing, offering greater safety and reliability. If an abnormal condition such as overpressure or excessive displacement occurs during press-fitting, an alarm sounds and generates a fault code, improving maintenance efficiency, facilitating the setting of pressure ranges for different bearings, and enabling more precise control of the start and stop of the press-fitting device 300.

[0060] In some embodiments, the control system 400 may include a PLC (Programmable Logic Controller), a human-machine interface (HMI), a statistical process control (SPC) module, and a data storage module. The SPC module performs process control using mathematical statistics. The HMI may utilize a capacitive touch screen. The control system 400 pre-stores press-fit curve templates for different bearings. The operator inputs the outer diameter, height, and other dimensional parameters of the bearing to be press-fitted through the HMI. The control system 400 then calls the corresponding bearing press-fit curve template for subsequent press-fitting. The HMI is concise, intuitive, and easy to operate. During the press-fitting process, the control system 400 adjusts the press-fitting parameters of the press-fitting device 300 based on the detection information from the pressure sensor and displacement sensor and the SPC module, dynamically optimizing the bearing press-fitting curve. The control system 400 also records and generates the actual pressure-displacement curve (i.e., press-fitting curve). After the bearing press-fitting is completed, the control system 400 can also perform quality traceability. The control system 400 compares the actual press-fitting curve with the press-fitting curve template and outputs a corresponding pass rate report.

[0061] According to an embodiment of the present application, a bearing press-fitting method is also provided, which is applied to the above-mentioned gantry movable bearing press-fitting system. Figure 5 As shown, the bearing press-fitting method of the present application includes the following steps:

[0062] S1. Position the pulley assembly to be press-fitted on the base platform, and place the bearing in the press-fitting position of the pulley assembly.

[0063] In this embodiment, a centering detection device is installed on the base platform, which can be a laser alignment device. After the bearing is placed in the press-fit position of the pulley assembly, the centering detection device detects the center of the pulley assembly and the bearing and aligns them so that the centers of the pulley assembly and the bearing coincide. The operator can also input the dimensional parameters of the bearing to be press-fitted, such as the outer diameter and height, through the human-machine interface of the control system.

[0064] S2. The control system controls the movable gantry to move to the corresponding press-fitting station on the base platform so that the press-fitting device on the movable gantry is located above the corresponding bearing.

[0065] In this embodiment, the mobile gantry includes a traveling mechanism, and the control system controls the traveling mechanism to move along the traveling track of the base platform so that the press-fitting device on the mobile gantry is located above the corresponding bearing.

[0066] S3. The control system controls the press-fitting device to perform press-fitting. During the press-fitting process, the detection device detects the press-fitting data of the press-fitting device and sends the detection information to the control system. The control system adjusts the press-fitting parameters of the press-fitting device based on the detection information of the detection device until the press-fitting is completed.

[0067] In this embodiment, the press-fitting device includes a second drive mechanism and a press head. The second drive mechanism can be a servo electric cylinder. The detection device includes a pressure sensor and a displacement sensor. When the press-fitting device's press head is positioned above the corresponding bearing, a centering detection device detects the center of the press head and the bearing, aligning the press head and the bearing so that the center of the press head and the bearing to be press-fitted coincide. For example, the coaxiality error between the press head and the bearing to be press-fitted is less than 0.01 mm. The control system pre-stores press-fitting curve templates for different bearings. Based on the input dimensional parameters of the bearing to be press-fitted, the control system calls the corresponding bearing press-fitting curve template to control the press-fitting device to perform press-fitting. During the press-fitting process, the pressure sensor detects the pressure of the press head, and the displacement sensor detects the displacement of the press head. Based on the detection information of the detection device and the statistical process control module, the control system adjusts the press-fitting parameters of the press-fitting device, such as the thrust, speed, and telescopic length parameters of the servo electric cylinder, to dynamically optimize the bearing press-fitting curve, achieving precise matching of the pressure and displacement of the press head. This can eliminate impact loads, improve the pressure safety factor, avoid overload damage to the workpiece, and ensure damage-free press-fitting of the bearing, with higher safety and reliability. When abnormal conditions such as overpressure and displacement exceeding the limit occur during press fitting, the alarm will sound an alarm and generate a fault code, which improves maintenance efficiency, facilitates setting the pressure range of different bearings, and more accurately controls the start and stop of the press fitting device.

[0068] In some embodiments, the press-fitting process may sequentially include a pre-pressing phase, a main pressing phase, and a holding phase. For example, during the pre-pressing phase, a servo electric cylinder drives the press head downward at a low speed, causing it to contact the bearing, with a pressure sensor providing real-time feedback on the contact status. During the main pressing phase, the servo electric cylinder drives the press head downward at a constant speed, causing the bearing to be pressed into the pulley assembly at a constant speed. Simultaneously, the control system dynamically adjusts the thrust of the servo electric cylinder to compensate for surface unevenness of the workpiece. During the holding phase, the target pressure is maintained for a certain period of time, such as 10-15 seconds, to eliminate microscopic deformation of the assembly and ensure the stability of the interference fit between the bearing and the pulley assembly.

[0069] In some embodiments, after press-fitting is complete, the control system performs quality traceability, compares the actual press-fitting curve with a pre-stored press-fitting curve template, and outputs a corresponding pass rate report. Multiple pulley assemblies to be press-fitted can be positioned sequentially along the length of the base platform to form multiple press-fitting stations. A mobile gantry moves sequentially to each press-fitting station to perform operations, eliminating the need for manual intervention and enabling continuous multi-station operation.

[0070] Based on the above-mentioned embodiments of the present application, in the absence of explicit negation or conflict, the technical features of one embodiment may be beneficially combined with one or more other embodiments.

[0071] The above descriptions are merely some embodiments of the present application and are intended to illustrate the technical solution of the present application, not to limit it. It should be understood that, without departing from the inventive concept of the present application, those skilled in the art may make improvements or substitutions based on the above descriptions, and all such improvements and substitutions shall fall within the scope of protection of the present application. In such cases, all details may be replaced with equivalent elements, and the materials, shapes, and sizes may be arbitrary.

Claims

1. A gantry movable bearing press-fitting system, characterized in that: include: The base platform is used to position and place the pulley assembly to be pressed; A movable gantry is provided on the base platform and is movable along the length direction of the base platform; A press-fitting device is provided on top of the movable gantry and above the base platform, the movable gantry is used to move the press-fitting device to a corresponding press-fitting station on the base platform, and the press-fitting device is used to press-fit the bearing into the pulley assembly; A detection device, used for detecting press-fitting data of the press-fitting device; The control system is connected to the movable gantry, the pressing device and the detection device respectively, and is used to receive detection information from the detection device, control the movement of the movable gantry and regulate the pressing device to perform pressing.

2. The gantry movable bearing press-fitting system according to claim 1, characterized in that: The base platform comprises: A placement platform, wherein a base is provided at the bottom of the placement platform, and a plurality of positioning seats for positioning the pulley assembly are provided on the upper surface of the placement platform at intervals along its length direction; Wherein, a centering detection device is provided on the base platform, and the centering detection device is used to detect the center of the pulley assembly and the bearing for centering, and the centering detection device is also used to detect the center of the press-fitting device and the bearing for centering.

3. The gantry movable bearing press-fitting system according to claim 1, characterized in that: The mobile gantry comprises: Gantry body; Two walking mechanisms are respectively arranged at the lower ends of both sides of the gantry body, and the base platform is provided with walking tracks corresponding to each of the walking mechanisms along its length direction.

4. The gantry movable bearing press-fitting system according to claim 3, characterized in that: Each of the walking mechanisms comprises: A walking beam connected to the gantry body; Traveling wheels, arranged on the travel beam and matched with the corresponding travel tracks; The first driving mechanism is arranged on the walking beam and connected to the walking wheel, and is used for driving the walking wheel to move along the walking track.

5. The gantry movable bearing press-fitting system according to claim 4, characterized in that: The length direction of each walking beam is consistent with the length direction of the walking track, and the two ends of the length direction of each walking beam are respectively provided with the walking wheels, and the lower ends of both sides of the gantry body are respectively connected to the middle part of the corresponding walking beam, and each walking wheel is provided with a groove that matches the walking track; The lower ends of both sides of the gantry body are respectively provided with horizontal connecting parts connected to the middle parts of the corresponding walking beams, and the horizontal connecting parts are perpendicular to the walking beams to which they are connected. The base platform is located between the two horizontal connecting parts, and walking channels connected to the walking beams are respectively provided on both sides of the length direction of the base platform. The two walking tracks are respectively arranged on the bottom surfaces of the corresponding walking channels, and the first driving mechanism is arranged in the walking beam.

6. The gantry movable bearing press-fitting system according to claim 5, characterized in that: Each of the two ends of the walking beam in the length direction is further provided with a reverse roller, each of the reverse rollers is used to cooperate with the top surface of the corresponding walking channel, and the two walking wheels on each walking beam are located between the two reverse rollers; Each of the counter-rollers is installed on a support, and connecting plates connected to the support are respectively provided at both ends of the length direction of each walking beam. A support seat that cooperates with the support is provided on each connecting plate, and an adjustment component is also provided on each support seat, and the adjustment component is used to adjust the height of the support.

7. The gantry movable bearing press-fitting system according to claim 1, characterized in that: The press-fitting device comprises: The pressing head is used to contact the bearing for press-fitting; The second driving mechanism is connected to the pressure head and is used to drive the pressure head to move up and down.

8. The gantry movable bearing press-fitting system according to claim 7, characterized in that: The detection device comprises: A pressure sensor, used to detect the pressure of the pressure head; A displacement sensor, used to detect the displacement of the pressure head; Among them, the pressure sensor and the displacement sensor are arranged on the pressure head, and the pressure head is in the shape of a circular plate. The control system adjusts the pressing parameters of the pressing device based on the detection information of the pressure sensor and the displacement sensor and the statistical process control module. The control system is also equipped with an alarm.

9. A bearing press-fitting method, characterized in that: The gantry movable bearing press-fitting system according to any one of claims 1 to 8 comprises the following steps: S1. Position the pulley assembly to be press-fitted on the base platform, and place the bearing at the press-fitting position of the pulley assembly; S2. The control system controls the mobile gantry to move to the corresponding press-fitting station on the base platform so that the press-fitting device on the mobile gantry is located above the corresponding bearing; S3. The control system controls the press-fitting device to perform press-fitting. During the press-fitting process, the detection device detects the press-fitting data of the press-fitting device and sends the detection information to the control system. The control system adjusts the press-fitting parameters of the press-fitting device based on the detection information of the detection device until the press-fitting is completed.

10. The bearing press-fitting method according to claim 9, characterized in that: The base platform is provided with a centering detection device. In S1, the centering detection device detects the center of the pulley assembly and the bearing and aligns them so that the centers of the pulley assembly and the bearing coincide with each other. The movable gantry includes a walking mechanism. In S2, the control system controls the walking mechanism to move along the walking track of the base platform.

11. The bearing press-fitting method according to claim 9, characterized in that: The press-fitting device includes a second driving mechanism and a pressing head. In S3, the control system controls the second driving mechanism to drive the pressing head to move up and down for press-fitting. The detection device includes a pressure sensor and a displacement sensor. In S3, the pressure sensor detects the pressure of the pressing head, and the displacement sensor detects the displacement of the pressing head. The control system adjusts the pressing parameters of the pressing device based on the detection information of the detection device and the statistical process control module. In S3, the press-fitting process includes a pre-pressing stage, a main pressing stage, and a pressure-holding stage in sequence.

12. The bearing press-fitting method according to claim 11, characterized in that: In S1, the size parameters of the bearing to be press-fitted are input through the control system; In S3, after the press-fitting is completed, the control system performs quality tracing, compares the actual press-fitting curve with the press-fitting curve template pre-stored in the control system, and outputs a corresponding pass rate report.

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