An automated processing system for automotive wheel hubs

Abstract

The application relates to the technical field of automatic processing equipment, in particular to an automatic processing system for automobile wheel hubs, which comprises a feeding module, a machining module, a trimming module, a collecting module and a control module; the machining module comprises a rotary base, a positioning unit and a machining unit, the positioning unit abuts against the inner wall of the central hole of the automobile wheel hub through a central tensioning subunit and abuts against the outer periphery of the automobile wheel hub through a radial limiting subunit; the trimming module is used for trimming the hole edge, the spoke edge and / or the outer edge transition area; the collecting module is used for obtaining a reference state, a trimming state and a detection state; the control module divides the wheel hub circumferential sector according to the angular position of the rotary base, and obtains a processing result by associating each state according to the sector, so that the repositioning, reprocessing or shunting treatment is controlled, the problem that different circumferential area states are difficult to correspond is solved, and the pertinence of abnormal treatment, the processing stability and the quality tracing capability are improved.

Description

Technical Field

[0001] This invention relates to the field of automated processing equipment technology, and in particular to an automated processing system for automobile wheel hubs. Background Technology

[0002] The production process of automobile wheel hubs typically involves processes such as material loading, positioning, machining, hole edge trimming, spoke edge treatment, and inspection. Existing automated processing systems generally use a conveyor mechanism to send the automobile wheel hubs into the processing position, then use a positioning fixture to fix the automobile wheel hubs, and the corresponding processing equipment, trimming equipment, and inspection equipment complete the corresponding processing in sequence.

[0003] In actual processing, the edge of the bore, the edge of the spoke, and the outer edge transition area of ​​the car wheel hub are usually distributed along the circumference. The processing and finishing states of different circumferential areas may differ. Although existing systems can locate, process, and inspect car wheel hubs, it is usually difficult to correlate the reference state, finishing state, and inspection state of different circumferential areas of the same car wheel hub.

[0004] When the detection equipment finds an abnormality at a certain hole edge, spoke edge, or outer edge transition area, the existing system can usually only perform repair, re-inspection, or diversion processing based on the detection results. It is difficult to determine whether the abnormal area corresponds to unreliable positioning, insufficient repair, or abnormal repair contact, which is not conducive to targeted repositioning, local repair, and diversion control of automobile wheel hubs. Summary of the Invention

[0005] The main objective of this invention is to provide an automated processing system for automobile wheel hubs, which aims to solve the problem that existing technologies cannot correlate the positioning reference state, trimming process state and inspection state of different circumferential areas of the same wheel hub, resulting in frequent processing abnormalities.

[0006] To achieve the above objectives, the present invention provides an automated processing system for automobile wheel hubs, the system comprising: The loading module includes a conveying unit and a loading unit. The conveying unit is used to convey automobile wheel hubs to be processed, and the loading unit is located on one side of the conveying unit. A machining module includes a rotating base, a positioning unit, and a machining unit. The positioning unit is disposed on the rotating base, and the machining unit is used to perform machining on the automobile wheel hub. The positioning unit includes a central tensioning subunit and a radial limiting subunit. The central positioning subunit abuts against the inner wall of the central hole of the automobile wheel hub, and the radial limiting subunit abuts against the outer periphery of the automobile wheel hub. A trimming module is disposed on one side of the machining module, and the trimming module is used to trim the hole edge, spoke edge and / or outer edge transition area of ​​the automobile wheel hub. The acquisition module is used to acquire the reference state, repair state and inspection state of the automobile wheel hub; The control module is communicatively connected to the feeding module, machining module, trimming module, and data acquisition module. The control module is used to divide the circumferential area of ​​the car wheel hub into several sectors according to the angular position of the slewing base, and associate the reference state, trimming state and inspection state of the same car wheel hub according to the corresponding sectors to obtain the processing results. The control module is also used to control the positioning unit to perform repositioning, or control the trimming module to perform repair, or control the car wheel hub to enter the diversion process, based on the processing results.

[0007] Optionally, the positioning unit further includes a positioning seat, which is fixedly connected to the rotating base; The radial limiting subunit includes several limiting claws and several driving components. The driving components are disposed on the positioning seat, the limiting claws are movably disposed on the positioning seat, and the limiting claws are also connected to the output end of the driving components.

[0008] Optionally, a plurality of the limiting claws are respectively disposed at different heights of the positioning seat, and the plurality of the limiting claws are disposed in pairs, wherein at least one pair of limiting claws is disposed perpendicular to each other.

[0009] Optionally, the central tensioning subunit includes: The tensioning seat is fixedly connected to the center of the positioning seat, and support pins are provided at both ends of the tensioning seat. A pair of tensioning jaws are provided, and the tensioning jaws are movably disposed on the outer periphery of the support pin; The tensioning component is disposed between two tensioning jaws. The tensioning component includes a tensioning motor, a transmission rod, and a pair of tensioning connecting rods. The ends of the two tensioning connecting rods are hinged to each other, and the hinged portions abut against the tensioning jaws respectively. The tensioning motor is fixedly mounted on the tensioning seat. The output end of the tensioning motor is connected to the transmission rod. The two ends of the transmission rod are movably connected to the middle of the tensioning connecting rods respectively, so as to drive the tensioning connecting rods to be tensioned outward synchronously by the tensioning motor, thereby driving the tensioning jaws to slide on the support pin. The tensioning claw includes a tensioning sleeve and several tensioning pins. The tensioning pins are movably disposed on the tensioning sleeve. The tensioning sleeve is sleeved on the outer periphery of the support pin. The two ends of the support pin have variable diameter portions. The diameter of the variable diameter portion located above decreases from top to bottom, and the diameter of the variable diameter portion located below increases from top to bottom.

[0010] Optionally, a support block is provided in the middle of the tensioning seat, the transmission rod moves through the support block, and the outer periphery of the transmission rod is threaded.

[0011] Optionally, the acquisition module includes a reference unit, which includes a tension subunit, a limiting subunit, and an angle subunit; The tensioning subunit is disposed on the tensioning claw and / or tensioning pin, and is used to obtain the contact state between the tensioning pin and the inner wall of the center hole of the automobile wheel hub. The limiting subunit is disposed on the radial limiting subunit and is used to obtain the limiting state between the limiting claw and the outer periphery of the automobile wheel hub. The angle subunit is connected to the slewing base and is used to obtain the angular position when the slewing base drives the car wheel hub to rotate; The control module is used to obtain the reference state of the car wheel hub based on the contact state, the limit state, and the angular position.

[0012] Optionally, the tensioning subunit includes a contact sensor and / or a pressure sensor; The tensioning pin has an abutment end at one end near the inner wall of the center hole of the car wheel hub, and the contact sensor and / or pressure sensor are located at the abutment end, inside the tensioning pin, or between the tensioning pin and the tensioning sleeve. The contact sensor is used to determine whether the tensioning pin is in contact with the inner wall of the center hole of the vehicle wheel hub, and the pressure sensor is used to determine the tensioning pressure exerted by the tensioning pin on the inner wall of the center hole of the vehicle wheel hub.

[0013] Optionally, the trimming module includes a robot body, a trimming spindle, and a trimming tool, wherein the trimming spindle is disposed on the robot body and the trimming tool is disposed at the output end of the trimming spindle; The acquisition module also includes a trimming unit, which is used to acquire the contact force between the trimming tool and the car wheel hub, the floating displacement of the trimming spindle, the working current of the trimming spindle and / or the vibration state of the trimming spindle, so as to acquire the trimming state of the corresponding sector of the car wheel hub.

[0014] Optionally, the acquisition module further includes a detection unit, which includes a vision sensor, a contour sensor, and a detection light source; The vision sensor is used to acquire detection images of the bore edge, spoke edge and / or outer edge transition area of ​​the car wheel hub; the contour sensor is used to acquire contour data of the bore edge, spoke edge and / or outer edge transition area of ​​the car wheel hub; and the detection light source is used to provide illumination to the acquisition area of ​​the vision acquisition device. The control module is used to map the detected image and contour data to the corresponding sector according to the angular position of the rotating base, so as to obtain the detection status of the corresponding sector of the car wheel hub.

[0015] Optionally, the control module is used to obtain processing results based on the reference state, trimming state, and detection state; When the reference state does not meet the preset reference requirements, the car wheel hub is marked as a reference unreliable state, and the positioning unit is controlled to perform repositioning. When the baseline state meets the preset baseline requirements, the detection state does not meet the preset detection requirements, and the corresponding sector's trimming state indicates under-trimming, the trimming module is controlled to perform re-trimming on the corresponding sector. When the baseline state meets the preset baseline requirements, the detection state does not meet the preset detection requirements, and the trimming state of the corresponding sector indicates abnormal contact, the control module generates a trimming tool maintenance prompt or a trimming parameter adjustment instruction. When the baseline state meets the preset baseline requirements, the detection state does not meet the preset detection requirements, and the trimming state of the corresponding sector meets the preset trimming requirements, the control module controls the car wheel hub to enter the re-inspection station or the unqualified station.

[0016] The beneficial effects that this invention can achieve are as follows: This invention uses a feeding module, including a conveying unit and a loading unit, to stably deliver the automotive wheel hub to be processed into the processing position. The machining module, with its rotating base, positioning unit, and processing unit, completes the positioning and machining of the wheel hub. Simultaneously, the positioning unit uses a central tensioning subunit to abut against the inner wall of the wheel hub's central hole and a radial limiting subunit to abut against the outer circumference of the wheel hub, ensuring that the wheel hub is constrained by both the central reference and the outer circumferential direction during processing and rotation. Furthermore, a trimming module trims the wheel hub's hole edges, spoke edges, and / or outer edge transition areas. A data acquisition module obtains the reference state, trimming state, and detection state of the same wheel hub. The control module then divides the circumferential area of ​​the wheel hub into several sectors based on the angular position of the rotating base and associates the aforementioned states according to the corresponding sectors. This solves the problem in existing automated processing systems where it is difficult to correlate the positioning, trimming, and detection states of different circumferential areas of the same wheel hub, leading to unclear causes of processing abnormalities and insufficient precision in repair and diversion processing. Specifically, through the above-mentioned structure and control coordination, the system can generate processing results around specific sectors and select repositioning, local repair or diversion processing based on the processing results. This makes the handling of abnormalities no longer solely dependent on the final inspection conclusion, reduces unnecessary rework of the entire part, improves the targeting of processing of hole edges, spoke edges and outer edge transition areas, and enhances the continuity, stability and quality traceability of the automated processing of automotive wheel hubs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the processing system in Embodiment 1 of the present invention; Figure 2This is a schematic diagram of the positioning unit and the car wheel hub in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the positioning unit in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the central tensioning subunit in Embodiment 1 of the present invention.

[0018] Figure label: 1-Feeding module, 2-Machining module; 11-Conveying unit, 12-Feeding unit; 21-Positioning unit, 22-Processing unit; 211-Central tensioning sub-unit, 212-Radial limiting sub-unit, 213-Positioning seat; 2111-Tensioning seat, 2112-Support pin, 2113-Tensioning claw, 2114-Tensioning component, 2115-Tensioning motor; 2116-Transmission rod, 2117-Tensioning connecting rod, 2118-Tensioning sleeve, 2119-Tensioning pin, 2110-Variable diameter part, 2120-Support block; 2121-Limit gripper, 2122-Driver.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean 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.

[0023] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0024] Example 1: Please refer to the attached document as well. Figures 1 to 4 This embodiment provides an automated processing system for automobile wheel hubs, the system comprising: The loading module 1 includes a conveying unit 11 and a loading unit 12. The conveying unit 11 is used to convey the automobile wheel hubs to be processed, and the loading unit 12 is disposed on one side of the conveying unit 11. The machining module 2 includes a rotating base, a positioning unit 21, and a machining unit 22. The positioning unit 21 is disposed on the rotating base, and the machining unit 22 is used to perform machining on the automobile wheel hub. The positioning unit 21 includes a central tensioning subunit 211 and a radial limiting subunit 212. The central positioning subunit abuts against the inner wall of the central hole of the automobile wheel hub, and the radial limiting subunit 212 abuts against the outer periphery of the automobile wheel hub. A trimming module is disposed on one side of the machining module 2. The trimming module is used to trim the hole edge, spoke edge and / or outer edge transition area of ​​the automobile wheel hub. The acquisition module is used to acquire the reference state, repair state and inspection state of the automobile wheel hub; The control module is communicatively connected to the feeding module 1, the machining module 2, the trimming module, and the data acquisition module. The control module is used to divide the circumferential area of ​​the car wheel hub into several sectors according to the angular position of the slewing base, and associate the reference state, trimming state and inspection state of the same car wheel hub according to the corresponding sectors to obtain the processing results. The control module is also used to control the positioning unit 21 to perform repositioning, or control the trimming module to perform repair, or control the car wheel hub to enter the diversion process according to the processing result.

[0025] In this embodiment, the positioning unit 21 further includes a positioning seat 213, which is fixedly connected to the rotating base; The radial limiting subunit 212 includes a plurality of limiting claws 2121 and a plurality of driving members 2122. The driving members 2122 are disposed on the positioning seat 213, the limiting claws 2121 are movably disposed on the positioning seat 213, and the limiting claws 2121 are also connected to the output end of the driving members 2122.

[0026] In this embodiment, several limiting claws 2121 are respectively disposed at different heights of the positioning base 213, and several limiting claws 2121 are disposed in pairs, wherein at least one pair of limiting claws 2121 are disposed perpendicular to each other.

[0027] In this embodiment, the central tensioning subunit 211 includes: Tensioning seat 2111, the tensioning seat 2111 is fixedly connected to the center of the positioning seat 213, and support pins 2112 are provided at the openings at both ends of the tensioning seat 2111; A pair of tensioning claws 2113 are provided, and the tensioning claws 2113 are movably disposed on the outer periphery of the support pin 2112; Tensioning element 2114 is disposed between two tensioning claws 2113. The tensioning element 2114 includes a tensioning motor 2115, a transmission rod 2116, and a pair of tensioning connecting rods 2117. The ends of the two tensioning connecting rods 2117 are hinged to each other, and the hinged parts abut against the tensioning claws 2113 respectively. The tensioning motor 2115 is fixedly disposed on the tensioning seat 2111. The output end of the tensioning motor 2115 is connected to the transmission rod 2116. The two ends of the transmission rod 2116 are movably connected to the middle of the tensioning connecting rods 2117 respectively, so that the tensioning motor 2115 drives the tensioning connecting rods 2117 to be tensioned outward synchronously, so as to drive the tensioning claws 2113 to slide on the support pin 2112. The tensioning claw 2113 includes a tensioning sleeve 2118 and a plurality of tensioning pins 2119. The tensioning pins 2119 are movably disposed on the tensioning sleeve 2118. The tensioning sleeve 2118 is sleeved on the outer periphery of the support pin 2112. The two ends of the support pin 2112 have variable diameter portions 2110. The diameter of the upper variable diameter portion 2110 decreases from top to bottom, and the diameter of the lower variable diameter portion 2110 increases from top to bottom.

[0028] In this embodiment, a support block 2120 is provided in the middle of the tensioning seat 2111, and the transmission rod 2116 movably passes through the support block 2120. The outer periphery of the transmission rod 2116 is threaded.

[0029] It should be noted that automobile wheel hubs typically have a center hole, an outer rim, spokes, and several hole edges. During machining and subsequent finishing, if the center hole of the wheel hub is not positioned stably or the outer radial limit is insufficient, machining differences can easily occur at different circumferential positions of the hole edges, spoke edges, or outer edge transition areas.

[0030] Based on this, in this embodiment, the wheel hub to be processed is fed into the machining module 2 through the feeding module 1, and the center hole and outer periphery of the wheel hub are constrained simultaneously through the positioning unit 21. Then, the reference state, repair state and detection state are obtained through the acquisition module, so that the control module can record the different circumferential areas of the same wheel hub according to the angle position of the slewing base, which is convenient for subsequent judgment of whether abnormal areas need to be repositioned, partially repaired or diverted.

[0031] In one specific embodiment, the feeding module 1 includes a conveying unit 11 and a feeding unit 12. The conveying unit 11 can be a roller conveyor line, a chain conveyor line, a pallet conveyor line, or other conveying structures suitable for carrying automobile wheel hubs. The conveying unit 11 is used to receive automobile wheel hubs to be processed from the previous process and to transport the automobile wheel hubs to the material picking position near the machining module 2.

[0032] In one specific embodiment, the loading unit 12 is located on one side of the conveying unit 11. It preferably employs a robotic arm, a lifting and transferring mechanism, a clamping and handling mechanism, or a transfer mechanism with suction clamps. After the car wheel hub reaches the picking position, the loading unit 12 picks up the car wheel hub from the conveying unit 11 and transfers it to the positioning unit 21, ensuring that the center hole of the car wheel hub faces the center tensioning subunit 211, and that the outer periphery of the car wheel hub falls within the limiting range of the radial limiting subunit 212. Based on this structure, the conveying unit 11 can maintain continuous feeding, while the loading unit 12 is responsible for completing the directional transfer between the conveying position and the processing position, ensuring that the car wheel hub has a relatively stable initial posture when entering the processing position.

[0033] It is understood that the machining module 2 includes a rotary base, a positioning unit 21 and a machining unit 22. The rotary base is used to support the positioning unit 21 and drive the positioning unit 21 and the car wheel hub to rotate around a preset axis. The rotary base can be connected to a servo drive mechanism, an indexing mechanism or a turntable structure so that the control module can obtain or control the angular position of the rotary base.

[0034] It is also understandable that the positioning unit 21 is set on the rotating base. When the car wheel hub is placed on the positioning unit 21, the positioning unit 21 rotates together with the rotating base, so that different circumferential areas of the car wheel hub face the machining unit 22, the trimming module, or the acquisition module in sequence. The machining unit 22 may include turning, milling, drilling, boring, or chamfering machining mechanisms, used to perform machining on the hole edges, spoke connection areas, outer edge transition areas, or other areas to be machined on the car wheel hub. Since the car wheel hub needs to withstand the force of the tool during the machining process, the positioning unit 21 uses both a central tensioning subunit 211 and a radial limiting subunit 212, which helps to limit the position of the car wheel hub from both the inner wall of the central hole and the outer periphery, reducing machining errors caused by wheel hub wobble or radial movement during the machining process.

[0035] Furthermore, the positioning unit 21 also includes a positioning seat 213, which is fixedly connected to the rotating base. The positioning seat 213 serves as the mounting base for the central tensioning subunit 211 and the radial limiting subunit 212. The radial limiting subunit 212 includes several limiting claws 2121 and several driving members 2122. The driving members 2122 are mounted on the positioning seat 213, and the limiting claws 2121 are movably mounted on the positioning seat 213 and connected to the output end of the corresponding driving member 2122. When the driving member 2122 operates, it can drive the limiting claws 2121 to move radially closer to or further away from the outer circumference of the car wheel hub. After the car wheel hub is placed on the positioning unit 21, the limiting claws 2121 move towards the outer circumference of the car wheel hub under the drive of the driving member 2122 and abut against the outer circumference of the car wheel hub, thereby limiting the car wheel hub from the outer circumferential direction.

[0036] Furthermore, several limiting claws 2121 are respectively disposed at different heights on the positioning seat 213, so that the limiting effect covers different height positions on the outer periphery of the car wheel hub, avoiding the instability of support caused by steps, chamfers or rim transition surfaces on the outer periphery of the wheel hub when limiting only a single height. Several limiting claws 2121 are arranged in pairs, and at least one pair of limiting claws 2121 are arranged perpendicular to each other, restricting the lateral movement of the car wheel hub from two intersecting radial directions, making it less likely for the car wheel hub to eccentrically shift during rotation and processing.

[0037] In some specific embodiments, the central tensioning subunit 211 abuts against the inner wall of the center hole of the car wheel hub. It includes a tensioning seat 2111, a pair of tensioning claws 2113, and a tensioning member 2114. The tensioning seat 2111 is fixedly connected to the center of the positioning seat 213, so that the central tensioning subunit 211 is located in the central area of ​​the positioning unit 21. Support pins 2112 are provided at both ends of the tensioning seat 2111. The support pins 2112 are used to provide sliding support for the tensioning claws 2113. The pair of tensioning claws 2113 are movably disposed on the outer periphery of the support pins 2112. The tensioning member 2114 is disposed between the two tensioning claws 2113. When the car wheel hub is placed on the positioning seat 213, the tensioning member 2114 drives the two tensioning claws 2113 to open outward synchronously, so that the tensioning claws 2113 gradually approach and abut against the inner wall of the center hole of the car wheel hub. By using the tension positioning of the inner wall of the center hole, the car wheel hub is positioned with the center hole as the main positioning reference, which facilitates the subsequent processing unit 22, the trimming module and the acquisition module to perform operations and record data around the same wheel hub center.

[0038] It should be noted that the tensioning component 2114 includes a tensioning motor 2115, a transmission rod 2116, and a pair of tensioning connecting rods 2117. The tensioning motor 2115 is fixedly mounted on the tensioning seat 2111. The output end of the tensioning motor 2115 is connected to the transmission rod 2116. Both ends of the transmission rod 2116 are movably connected to the middle of the tensioning connecting rods 2117. The ends of the two tensioning connecting rods 2117 are hinged to each other, and the hinged parts abut against the tensioning claws 2113. When the tensioning motor 2115 is working, it drives the transmission rod 2115. When rod 2116 moves, the transmission rod 2116 drives the pair of tensioning rods 2117 to move synchronously through its two ends. The hinged part of the tensioning rod 2117 pushes the tensioning claw 2113 outward, causing the tensioning claw 2113 to slide along the support pin 2112 and be tensioned towards the inner wall of the center hole of the car wheel hub. Since the tensioning rods 2117 on both sides act outward synchronously on the tensioning claw 2113, the pair of tensioning claws 2113 can be pressed against the inner wall of the center hole more evenly, reducing the risk of wheel hub center displacement caused by unilateral tensioning.

[0039] It should also be noted that the tensioning claw 2113 includes a tensioning sleeve 2118 and several tensioning pins 2119. The tensioning sleeve 2118 is sleeved on the outer periphery of the support pin 2112 and can slide along the support pin 2112. The tensioning pins 2119 are movably disposed on the tensioning sleeve 2118. The two ends of the support pin 2112 have variable diameter portions 2110, wherein the diameter of the upper variable diameter portion 2110 decreases from top to bottom, and the diameter of the lower variable diameter portion 2110 increases from top to bottom. When the tensioning sleeve 2118 moves along the support pin 2112 under the push of the tensioning connecting rod 2117, the tensioning pin 2119 can extend radially or retract under the cooperation of the tensioning sleeve 2118 and the variable diameter part 2110, so that the tensioning pin 2119 gradually approaches the inner wall of the center hole of the car wheel hub and forms an abutment. Through the cooperation of the variable diameter part 2110 and the tensioning pin 2119, the sliding of the tensioning sleeve 2118 along the direction of the support pin 2112 can be converted into the tensioning action of the tensioning pin 2119 relative to the inner wall of the center hole, so that the center tensioning subunit 211 can form a more reliable internal support positioning effect within the limited installation space. When multiple tensioning pins 2119 act on the inner wall of the center hole at the same time, multi-point contact can be formed, reducing the local force concentration of the center hole, which is also conducive to improving the center positioning stability of the car wheel hub during the rotary machining process.

[0040] In this embodiment, a support block 2120 is provided in the middle of the tensioning seat 2111, and the transmission rod 2116 movably passes through the support block 2120. The outer circumference of the transmission rod 2116 is threaded. The support block 2120 supports the middle position of the transmission rod 2116, preventing it from wobbling or deviating when driven by the tensioning motor 2115. The threaded outer circumference of the transmission rod 2116 allows it to form a threaded transmission relationship with the tensioning connecting rod 2117, the threaded sleeve, or other transmission mating parts, enabling the rotational output of the tensioning motor 2115 to be stably converted into the axial drive or synchronous traction action of the transmission rod 2116. Supporting the transmission rod 2116 with the support block 2120 improves the stability of the tensioning member 2114 during repeated tensioning and loosening processes, and reduces the impact of the transmission rod 2116's sway on the synchronization of the tensioning jaws 2113.

[0041] The trimming module is located on one side of the machining module 2 and is used to trim the hole edges, spoke edges, and / or outer edge transition areas of the automobile wheel hub. The trimming module can be positioned to the side of the rotating base, so that when the automobile wheel hub rotates to the corresponding angle under the drive of the rotating base, the corresponding hole edges, spoke edges, or outer edge transition areas can reach the working range of the trimming module. The trimming module can employ a robotic trimming structure, a floating spindle structure, or an actuator with trimming tools, used to remove burrs, sharp edges, or localized residual edges formed after machining. Since the structural positions of different circumferential areas of the automobile wheel hub are different, distinguishing the circumferential areas of the wheel hub by the angular position of the rotating base allows the trimming module to process the hole edges, spoke edges, or outer edge transition areas corresponding to different sectors, facilitating subsequent mapping of the trimming state to specific circumferential areas.

[0042] Understandably, the acquisition module is used to acquire the reference state, trimming state, and inspection state of the automotive wheel hub. The reference state may include the contact status between the center tensioning subunit 211 and the inner wall of the center hole, the limiting status between the radial limiting subunit 212 and the outer circumference of the automotive wheel hub, and the angular position of the slewing base; the trimming state may include the contact status of the trimming module when operating in the corresponding circumferential area, changes in trimming amount, or trimming process signals; the inspection state may include images, contours, or other inspection results of the trimmed hole edge, spoke edge, or outer edge transition area. The control module is communicatively connected to the feeding module 1, machining module 2, trimming module, and acquisition module, respectively, so that the control module can not only control the feeding, positioning, processing, and trimming actions, but also receive the status data corresponding to each process.

[0043] It should also be noted that each sector can correspond to an angular range in the circumferential direction of the car wheel hub, such as a certain hole edge area, a certain spoke edge area, or a certain outer edge transition area. After the car wheel hub is positioned on the rotary base, the control module uses the angular position of the rotary base as the circumferential correspondence basis and associates the reference state, trimming state, and inspection state acquired by the acquisition module according to the corresponding sector. In this way, when an anomaly occurs in a certain sector during subsequent inspection, the control module can review the reference state and trimming state of that sector before and after processing, thereby determining that the anomaly is more likely related to unstable positioning reference, insufficient trimming, abnormal trimming contact, or subsequent inspection failure, rather than simply making a general classification based on the final inspection result.

[0044] In this embodiment, during system operation, the conveying unit 11 delivers the car wheel hub to be processed to the loading position, and the loading unit 12 transfers the car wheel hub to the positioning unit 21. The center tensioning subunit 211 first drives the tensioning claw 2113 to move through the tensioning motor 2115, transmission rod 2116 and tensioning connecting rod 2117, so that the tensioning pin 2119 abuts against the inner wall of the center hole of the car wheel hub. The radial limiting subunit 212 then limits the car wheel hub from the outer periphery direction through several limiting claws 2121, so that the car wheel hub forms a fixed state with the combined action of center tensioning and outer periphery limiting. Subsequently, the rotating base drives the car wheel hub to rotate to the corresponding position of the processing unit 22, and the processing unit 22 performs mechanical processing on the car wheel hub. After the mechanical processing is completed, the trimming module trims the hole edge, spoke edge and / or outer edge transition area of ​​the car wheel hub. The acquisition module acquires the reference state, trimming state and detection state during the positioning, trimming and detection processes, respectively. The control module maps these states to corresponding sectors according to the angular position of the slewing base, and obtains the processing results based on the state association results within the same sector.

[0045] Through the above implementation method, this embodiment associates the positioning state, trimming process state, and inspection state of the automotive wheel hub under the same rotational reference by circumferential sectors. For automotive wheel hubs with abnormal processing results, the control module can select a processing method based on the reference state, trimming state, and inspection state corresponding to the sector where the abnormality occurs. When the reference state is unreliable, the positioning unit 21 can be controlled to perform repositioning; when the corresponding sector has under-trimmed areas, the trimming module can be controlled to perform re-trimming on that sector; when the trimming state shows contact abnormality, the trimming tool can be prompted to maintain or adjust the trimming parameters; when both the reference state and the trimming state meet the requirements but the inspection is still unqualified, the automotive wheel hub can be controlled to enter the re-inspection station or the unqualified station. Therefore, this embodiment can improve the targeting of wheel hub processing abnormality handling, reduce unnecessary rework of the entire part, and help maintain the continuity and stability of the automated processing of automotive wheel hubs.

[0046] Example 2: In this embodiment, the acquisition module includes a reference unit, which includes a tension subunit, a limiting subunit, and an angle subunit. The tensioning subunit is disposed on the tensioning claw 2113 and / or the tensioning pin 2119, and is used to obtain the contact state between the tensioning pin 2119 and the inner wall of the center hole of the automobile wheel hub. The limiting subunit is disposed on the radial limiting subunit 212 and is used to obtain the limiting state between the limiting claw 2121 and the outer periphery of the car wheel hub. The angle subunit is connected to the slewing base and is used to obtain the angular position when the slewing base drives the car wheel hub to rotate; The control module is used to obtain the reference state of the car wheel hub based on the contact state, the limit state, and the angular position.

[0047] In this embodiment, the tensioning subunit includes a contact sensor and / or a pressure sensor; The tensioning pin 2119 is provided with an abutting end at one end near the inner wall of the center hole of the car wheel hub, and the contact sensor and / or pressure sensor are provided at the abutting end, inside the tensioning pin 2119, or between the tensioning pin 2119 and the tensioning sleeve 2118. The contact sensor is used to determine whether the tensioning pin 2119 is in contact with the inner wall of the center hole of the car wheel hub, and the pressure sensor is used to determine the tensioning pressure exerted by the tensioning pin 2119 on the inner wall of the center hole of the car wheel hub.

[0048] In this embodiment, the trimming module includes a robot body, a trimming spindle, and a trimming tool. The trimming spindle is mounted on the robot body, and the trimming tool is mounted on the output end of the trimming spindle. The acquisition module also includes a trimming unit, which is used to acquire the contact force between the trimming tool and the car wheel hub, the floating displacement of the trimming spindle, the working current of the trimming spindle and / or the vibration state of the trimming spindle, so as to acquire the trimming state of the corresponding sector of the car wheel hub.

[0049] In this embodiment, the acquisition module further includes a detection unit, which includes a visual sensor, a contour sensor, and a detection light source; The vision sensor is used to acquire detection images of the bore edge, spoke edge and / or outer edge transition area of ​​the car wheel hub; the contour sensor is used to acquire contour data of the bore edge, spoke edge and / or outer edge transition area of ​​the car wheel hub; and the detection light source is used to provide illumination to the acquisition area of ​​the vision acquisition device. The control module is used to map the detected image and contour data to the corresponding sector according to the angular position of the rotating base, so as to obtain the detection status of the corresponding sector of the car wheel hub.

[0050] In this embodiment, the control module is used to obtain the processing result based on the reference state, the trimming state, and the detection state; When the reference state does not meet the preset reference requirements, the car wheel hub is marked as a reference unreliable state, and the positioning unit 21 is controlled to perform repositioning. When the baseline state meets the preset baseline requirements, the detection state does not meet the preset detection requirements, and the corresponding sector's trimming state indicates under-trimming, the trimming module is controlled to perform re-trimming on the corresponding sector. When the baseline state meets the preset baseline requirements, the detection state does not meet the preset detection requirements, and the trimming state of the corresponding sector indicates abnormal contact, the control module generates a trimming tool maintenance prompt or a trimming parameter adjustment instruction. When the baseline state meets the preset baseline requirements, the detection state does not meet the preset detection requirements, and the trimming state of the corresponding sector meets the preset trimming requirements, the control module controls the car wheel hub to enter the re-inspection station or the unqualified station.

[0051] In this embodiment, the acquisition module is further used to acquire state data of the automobile wheel hub during positioning, trimming, and inspection, and provide the acquisition results to the control module for sector-based correlation judgment. Specifically, the acquisition module includes a reference unit, which includes a tensioning subunit, a limiting subunit, and an angle subunit. The tensioning subunit is set on the tensioning jaw 2113 and / or the tensioning pin 2119, and is used to acquire the contact state between the tensioning pin 2119 and the inner wall of the center hole of the automobile wheel hub. The limiting subunit is set on the radial limiting subunit 212, and is used to acquire the limiting state between the limiting jaw 2121 and the outer circumference of the automobile wheel hub. The angle subunit is connected to the rotating base and is used to acquire the angular position when the rotating base drives the automobile wheel hub to rotate. The control module acquires the reference state of the automobile wheel hub based on the contact state, the limiting state, and the angular position, thereby determining whether the automobile wheel hub is in a reliable positioning state before entering the processing or trimming stage.

[0052] In one specific embodiment, the tensioning subunit includes a contact sensor and / or a pressure sensor. The tensioning pin 2119 has an abutment end near the inner wall of the center hole of the vehicle wheel hub. The contact sensor and / or pressure sensor can be located at the abutment end, inside the tensioning pin 2119, or between the tensioning pin 2119 and the tensioning sleeve 2118. The contact sensor determines whether the tensioning pin 2119 has contacted the inner wall of the center hole, and the pressure sensor obtains the tensioning pressure exerted by the tensioning pin 2119 on the inner wall of the center hole. With this configuration, the control module can not only confirm whether the center tensioning subunit 211 has completed its operation, but also determine whether the inner support of the center hole is stable based on the tensioning pressure, avoiding further processing, adjustment, or testing when the center reference is unreliable.

[0053] In this embodiment, the trimming module includes a robot body, a trimming spindle, and a trimming tool. The trimming spindle is mounted on the robot body, and the trimming tool is located at the output end of the trimming spindle. The acquisition module also includes a trimming unit, which is used to acquire the contact force between the trimming tool and the car wheel hub, the floating displacement of the trimming spindle, the operating current of the trimming spindle, and / or the vibration state of the trimming spindle, and accordingly acquire the trimming state of the corresponding sector of the car wheel hub. Since the bore edge, spoke edge, and outer edge transition area of ​​the car wheel hub are distributed circumferentially, the control module can map the state data during the trimming process to specific sectors according to the angular position of the rotating base, so as to determine whether there is under-trimming, abnormal contact, or abnormal tool state in the corresponding area.

[0054] In this embodiment, the acquisition module further includes a detection unit, which includes a vision sensor, a contour sensor, and a detection light source. The vision sensor is used to acquire detection images of the wheel hub hole edge, spoke edge, and / or outer edge transition area. The contour sensor is used to acquire contour data of the above-mentioned areas. The detection light source is used to provide illumination to the acquisition area. The control module maps the detection images and contour data to corresponding sectors according to the angular position of the slewing base to obtain the detection status of the corresponding sector of the wheel hub, so that the final detection anomaly can establish a correspondence with the previous positioning status and trimming status.

[0055] The control module obtains the processing results based on the reference state, trimming state, and inspection state. When the reference state does not meet the preset reference requirements, the control module marks the car wheel hub as having an unreliable reference state and controls the positioning unit 21 to perform repositioning. When the reference state meets the preset reference requirements, the inspection state does not meet the preset inspection requirements, and the trimming state of the corresponding sector indicates under-trimming, the control module controls the trimming module to perform re-trimming on the corresponding sector. When the trimming state of the corresponding sector indicates contact abnormality, the control module generates a trimming tool maintenance prompt or a trimming parameter adjustment instruction. When both the reference state and the trimming state meet the requirements, but the inspection state still does not meet the preset inspection requirements, the control module controls the car wheel hub to enter the re-inspection station or the unqualified station. Through the above methods, the system can make corresponding judgments based on the positioning, trimming, and inspection data within the same sector, improving the pertinence of abnormal handling, reducing rework of the entire part, and enhancing the stability of the automated processing of the car wheel hub.

[0056] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. An automated processing system for automobile wheel hubs, characterized in that, The system includes: The loading module includes a conveying unit and a loading unit. The conveying unit is used to convey automobile wheel hubs to be processed, and the loading unit is located on one side of the conveying unit. A machining module includes a rotating base, a positioning unit, and a machining unit. The positioning unit is disposed on the rotating base, and the machining unit is used to perform machining on the automobile wheel hub. The positioning unit includes a central tensioning subunit and a radial limiting subunit. The central positioning subunit abuts against the inner wall of the central hole of the automobile wheel hub, and the radial limiting subunit abuts against the outer periphery of the automobile wheel hub. A trimming module is disposed on one side of the machining module, and the trimming module is used to trim the hole edge, spoke edge and / or outer edge transition area of ​​the automobile wheel hub. The acquisition module is used to acquire the reference state, repair state and inspection state of the automobile wheel hub; The control module is communicatively connected to the feeding module, machining module, trimming module, and data acquisition module. The control module is used to divide the circumferential area of ​​the car wheel hub into several sectors according to the angular position of the slewing base, and associate the reference state, trimming state and inspection state of the same car wheel hub according to the corresponding sectors to obtain the processing results. The control module is also used to control the positioning unit to perform repositioning, or control the trimming module to perform repair, or control the car wheel hub to enter the diversion process, based on the processing results.

2. The automated processing system for automobile wheel hubs as described in claim 1, characterized in that, The positioning unit further includes a positioning seat, which is fixedly connected to the rotary base; The radial limiting subunit includes several limiting claws and several driving components. The driving components are disposed on the positioning seat, the limiting claws are movably disposed on the positioning seat, and the limiting claws are also connected to the output end of the driving components.

3. The automated processing system for automobile wheel hubs as described in claim 2, characterized in that, The limiting claws are respectively disposed at different heights of the positioning seat, and the limiting claws are disposed in pairs, wherein at least one pair of limiting claws is disposed perpendicular to each other.

4. The automated processing system for automobile wheel hubs as described in claim 1, characterized in that, The central tensioning subunit includes: The tensioning seat is fixedly connected to the center of the positioning seat, and support pins are provided at both ends of the tensioning seat. A pair of tensioning jaws are provided, and the tensioning jaws are movably disposed on the outer periphery of the support pin; The tensioning component is disposed between two tensioning jaws. The tensioning component includes a tensioning motor, a transmission rod, and a pair of tensioning connecting rods. The ends of the two tensioning connecting rods are hinged to each other, and the hinged portions abut against the tensioning jaws respectively. The tensioning motor is fixedly mounted on the tensioning seat. The output end of the tensioning motor is connected to the transmission rod. The two ends of the transmission rod are movably connected to the middle of the tensioning connecting rods respectively, so as to drive the tensioning connecting rods to be tensioned outward synchronously by the tensioning motor, thereby driving the tensioning jaws to slide on the support pin. The tensioning claw includes a tensioning sleeve and several tensioning pins. The tensioning pins are movably disposed on the tensioning sleeve. The tensioning sleeve is sleeved on the outer periphery of the support pin. The two ends of the support pin have variable diameter portions. The diameter of the variable diameter portion located above decreases from top to bottom, and the diameter of the variable diameter portion located below increases from top to bottom.

5. The automated processing system for automobile wheel hubs as described in claim 4, characterized in that, A support block is provided in the middle of the tensioning seat, and the transmission rod moves through the support block. The outer periphery of the transmission rod is threaded.

6. The automated processing system for automobile wheel hubs as described in claim 4, characterized in that, The acquisition module includes a reference unit, which includes a tension subunit, a limiting subunit, and an angle subunit. The tensioning subunit is disposed on the tensioning claw and / or tensioning pin, and is used to obtain the contact state between the tensioning pin and the inner wall of the center hole of the automobile wheel hub. The limiting subunit is disposed on the radial limiting subunit and is used to obtain the limiting state between the limiting claw and the outer periphery of the automobile wheel hub. The angle subunit is connected to the slewing base and is used to obtain the angular position when the slewing base drives the car wheel hub to rotate; The control module is used to obtain the reference state of the car wheel hub based on the contact state, the limit state, and the angular position.

7. The automated processing system for automobile wheel hubs as described in claim 6, characterized in that, The tensioning subunit includes a contact sensor and / or a pressure sensor; The tensioning pin has an abutment end at one end near the inner wall of the center hole of the car wheel hub, and the contact sensor and / or pressure sensor are located at the abutment end, inside the tensioning pin, or between the tensioning pin and the tensioning sleeve. The contact sensor is used to determine whether the tensioning pin is in contact with the inner wall of the center hole of the vehicle wheel hub, and the pressure sensor is used to determine the tensioning pressure exerted by the tensioning pin on the inner wall of the center hole of the vehicle wheel hub.

8. The automated processing system for automobile wheel hubs as described in claim 1, characterized in that, The trimming module includes a robot body, a trimming spindle, and a trimming tool. The trimming spindle is mounted on the robot body, and the trimming tool is mounted on the output end of the trimming spindle. The acquisition module also includes a trimming unit, which is used to acquire the contact force between the trimming tool and the car wheel hub, the floating displacement of the trimming spindle, the working current of the trimming spindle and / or the vibration state of the trimming spindle, so as to acquire the trimming state of the corresponding sector of the car wheel hub.

9. The automated processing system for automobile wheel hubs as described in claim 1, characterized in that, The acquisition module also includes a detection unit, which includes a visual sensor, a contour sensor, and a detection light source. The vision sensor is used to acquire detection images of the bore edge, spoke edge and / or outer edge transition area of ​​the car wheel hub; the contour sensor is used to acquire contour data of the bore edge, spoke edge and / or outer edge transition area of ​​the car wheel hub; and the detection light source is used to provide illumination to the acquisition area of ​​the vision acquisition device. The control module is used to map the detected image and contour data to the corresponding sector according to the angular position of the rotating base, so as to obtain the detection status of the corresponding sector of the car wheel hub.

10. The automated processing system for automobile wheel hubs as described in claim 1, characterized in that, The control module is used to obtain processing results based on the baseline state, trimming state, and detection state. When the reference state does not meet the preset reference requirements, the car wheel hub is marked as a reference unreliable state, and the positioning unit is controlled to perform repositioning. When the baseline state meets the preset baseline requirements, the detection state does not meet the preset detection requirements, and the corresponding sector's trimming state indicates under-trimming, the trimming module is controlled to perform re-trimming on the corresponding sector. When the baseline state meets the preset baseline requirements, the detection state does not meet the preset detection requirements, and the trimming state of the corresponding sector indicates abnormal contact, the control module generates a trimming tool maintenance prompt or a trimming parameter adjustment instruction. When the baseline state meets the preset baseline requirements, the detection state does not meet the preset detection requirements, and the trimming state of the corresponding sector meets the preset trimming requirements, the control module controls the car wheel hub to enter the re-inspection station or the unqualified station.

Images