Production system of hub bearing

Abstract

The utility model relates to the technical field of hub bearing machining, and particularly discloses a hub bearing production system which comprises a feeding table, a piece taking mechanical arm and machining equipment, the feeding table comprises a conveying line and an in-place detection assembly located at the output end of the conveying line, the in-place detection assembly comprises a positioning plate and an in-place sensor, the positioning plate is provided with a guide opening, and the in-place sensor is arranged on the conveying line. After the workpiece moves into the guide opening, the in-place sensor can be triggered; the in-place sensor comprises a trigger rod, a first elastic piece and a sensing switch, the sensing switch is fixedly installed, the trigger rod is connected to the positioning plate or arranged on the machine frame in a sliding mode, the sliding direction of the trigger rod is parallel to the conveying direction of the conveying line, the first elastic piece is arranged between the trigger rod and the positioning plate / the machine frame, and the trigger rod can trigger the sensing switch. According to the scheme, the problem that a mechanical arm cannot accurately take parts due to the fact that the positions of the workpieces are inaccurate when the hub bearing parts are machined and taken in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub bearing processing, in particular to a production system of wheel hub bearings. Background Art

[0002] With the advancement of science and technology, bearings have entered the third generation, namely wheel hub bearings. The inner ring or outer ring of the third generation wheel hub bearings includes a shaft section and a flange section. The shaft section is used to coordinate the inner and outer rings, and the flange section is used to connect with other parts, such as rims, brake discs, steering knuckles, etc.

[0003] At present, the machining of third-generation wheel hub bearing parts (i.e., wheel hub bearing inner ring machining / wheel hub bearing outer ring machining) is achieved by using a production line. For example, patent announcement number CN202952050U is an automated production line for machining third-generation automobile bearing wheel hub rings and outer rings. In this production line, wheel hub bearing parts are stacked on a loading table, and a robot takes the processed parts from the loading table and sends them to the processing equipment (CNC lathe) for machining.

[0004] However, in the current method, because the parts to be processed are stacked on the loading table, the stacked workpieces have the problem of insufficient safety due to excessive stacking, and on the other hand, the position of the stacked workpieces is also difficult to ensure the accuracy of the position where the robot picks up the parts.

[0005] Although there are loading platforms with conveying functions in the prior art, which enable parts to be transported to the pickup position, the current loading platforms generally include a conveyor line and a mechanical blocking structure located at the output end of the conveyor line, such as setting a baffle at the output end of the conveyor line, or installing an in-place sensor (such as a beam-type or reflective photoelectric sensor) on the side of the output end of the conveyor line. After the in-place sensor detects the workpiece, the conveyor line is controlled to stop conveying to prevent the workpiece from falling, and at the same time, it is convenient for the manipulator to take the workpiece at the output end of the conveyor line every time. However, because the width of the conveyor line is greater than the width of the workpiece, and there is a certain deviation in the position of the workpiece placed on the conveyor line each time, it is impossible to accurately determine the position of the workpiece to be used by relying solely on the in-place sensor, which easily leads to the problem that the manipulator cannot accurately pick up the workpiece. Utility Model Content

[0006] The utility model aims to provide a hub bearing production system to solve the problem that the robot arm is prone to be unable to accurately pick up the parts due to the inaccurate position of the workpiece when the hub bearing parts are machined and taken out.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A production system for wheel hub bearings includes a loading platform, a picking robot and machining equipment. The loading platform includes a conveyor line and an in-place detection component located at the output end of the conveyor line. The in-place detection component includes a positioning plate and an in-place sensor. The positioning plate is provided with a guide port. After the workpiece moves into the guide port, the in-place sensor can be triggered.

[0009] The principle and advantages of this solution are: the pick-up robot in this solution picks up the workpiece located at the guide port on the loading platform and sends it to the machining equipment for processing; because the positioning plate of the loading platform is provided with a guide port, the workpiece (wheel hub bearing part) must be moved to the guide port under the transmission of the conveyor line before it can be sensed by the in-place sensor. After the in-place sensor senses the workpiece, it means that the workpiece has been accurately moved to the pick-up position. At this time, the pick-up robot can accurately pick up the workpiece with the correct position, thus avoiding the problem of inaccurate pick-up by the pick-up robot caused by the position deviation of the workpiece at the output end of the conveyor line.

[0010] In addition, the positioning plate of the present solution is set at the output end of the conveyor line, which can also block the workpiece being conveyed to prevent the workpiece from falling from the output end of the conveyor line.

[0011] Preferably, as an improvement, the in-place sensor includes a trigger rod, a first elastic member and a sensing switch, the sensing switch is fixedly installed, the trigger rod is slidably connected to a positioning plate or a frame, the sliding direction of the trigger rod is parallel to the conveying direction of the conveyor line, a first elastic member is arranged between the trigger rod and the positioning plate / frame, and the trigger rod can trigger the sensing switch.

[0012] Beneficial effect: When this solution is adopted, when the workpiece moves into the guide port, the workpiece pushes the trigger rod, so that the trigger rod overcomes the elastic force of the first elastic member and is pushed. The pushed trigger rod can trigger the sensing switch. The sensing switch is triggered, indicating that the workpiece has reached the pickup position.

[0013] Preferably, as an improvement, there are multiple guide openings, and each guide opening corresponds to an in-position sensor.

[0014] Beneficial effect: This solution allows a loading table to have multiple workpieces to be picked up in accurate positions.

[0015] Preferably, as an improvement, a plurality of guide plates are provided above the conveyor line, and a moving channel for the workpiece is formed between adjacent guide plates, and the output end of the moving channel faces the guide port.

[0016] Beneficial effect: This solution enables the workpiece to automatically perform preliminary position calibration during the transmission process along the conveyor line.

[0017] Preferably, as an improvement, the loading table also includes a fixedly installed feeding sensor, which is used to sense the Nth / row of workpieces arranged at the output end, and the workpiece closest to the guide port is called the 1st / row of workpieces. Here, the value of N is greater than 1. When the feeding sensor does not sense the workpiece, the conveyor line is controlled to start.

[0018] Beneficial effect: This solution sets a material replenishment sensor so that when there is a shortage of material in the Nth / row of workpieces greater than 1, the conveyor line is controlled to start, thereby avoiding the problem of long-term shortage of material at the output end of the conveyor line affecting production efficiency.

[0019] Preferably, as an improvement, the picking robot includes a space mover and a combined mechanical claw, the space mover is used to drive the combined mechanical claw to move from the picking position of the loading platform to the machining equipment, the combined mechanical claw includes a rotary drive, a loading claw and a unloading claw, the loading claw and the unloading claw are both installed on the rotary drive, and the rotary drive is used to drive the loading claw or the unloading claw to rotate to the working position.

[0020] Beneficial effect: When this solution is adopted, by arranging both a mechanical claw for loading and a mechanical claw for picking on the same picking robot, after the unloading claw takes out the workpiece processed by the machining equipment, it can only rotate the rotary drive on the picking robot to align the loading claw holding the workpiece to be processed with the chuck of the machining equipment, which is convenient for rapid loading after the machining equipment unloading is completed, thereby improving the utilization rate of the machining equipment and thus improving production efficiency.

[0021] Preferably, as an improvement, the loading claw and the unloading claw both include a plurality of clamping claws that can approach or move away from each other and are located on the same circumference, each clamping claw is provided with clamping fingers, the clamping fingers include near clamping fingers and far clamping fingers, and the distance between the near clamping fingers and the center of the circle is smaller than the distance between the far clamping fingers and the center of the circle.

[0022] Beneficial effects: When this solution is adopted, both the loading claw and the unloading claw are configured to have both near clamping fingers and far clamping fingers, so that both the loading claw and the unloading claw can be used to clamp the shaft section or flange section of the hub bearing. Specifically, for the loading claw or the unloading claw, the near clamping fingers and the far clamping fingers are configured with a spacing in the center line projection direction, so that when the shaft section needs to be clamped, the shaft section of the hub bearing is clamped by using multiple near clamping fingers on the clamping claw; and when the outer periphery of the flange section of the hub bearing needs to be clamped, the flange section of the hub bearing is clamped by using multiple far clamping fingers at a farther distance. Since the distances between the near clamping finger and the far clamping finger and the center of the circle are different, it can be ensured that whether it is the flange section or the shaft section of the workpiece being clamped, it can be achieved on the basis of a short clamping jaw moving stroke, thereby ensuring the efficiency of clamping; in addition, both the loading jaws and the unloading jaws can be used for both flange section clamping and shaft section clamping, so that the same combined mechanical jaws can be used in different processing steps of the inner ring of the hub bearing. Compared with the existing technology, the mechanical jaws are made universal, which helps to reduce the management cost of the mechanical jaws and improve the practicality of the mechanical jaws.

[0023] In addition, because one combined mechanical claw can be used for different processing steps of wheel hub bearings in this solution, it is helpful to use the same combined mechanical claw for loading in two or more adjacent processes, greatly reducing equipment costs.

[0024] Preferably, as an improvement, the near clamping finger and the far clamping finger can be detachably connected to the clamping jaw to reduce maintenance costs.

[0025] Preferably, as an improvement, an elastic ejector pin is further installed on the clamping jaw of the feeding jaw, and the end of the ejector pin is located between the distal clamping finger and the proximal clamping finger.

[0026] Beneficial effects: This solution can compensate for the surface size error of the hub bearing to a certain extent, ensuring that the workpiece can be stably pushed into the chuck of the machining equipment. At the same time, it can also avoid the hard squeezing of the workpiece during the insertion of the workpiece into the chuck of the machining equipment, which helps to reduce the workpiece damage rate during the workpiece loading process.

[0027] Preferably, as an improvement, the feeding claw further comprises an elastic pushing frame, the near clamping finger is located between the pushing frame and the far clamping finger, and the pushing frame is used to push the axial end face of the workpiece.

[0028] Beneficial effect: The pushing frame of the present invention is used to abut against the end face of the shaft segment of the wheel hub bearing. When in use, the loading claw inserts the workpiece into the machined chuck by clamping the shaft segment, releases the clamping of the workpiece by the near clamping fingers, and then controls the mechanical claw to approach the chuck, so that the pushing frame at the rear end of the near clamping fingers abuts against the end face of the shaft segment of the workpiece, thereby pushing the workpiece to move through the pushing frame to ensure that the workpiece can be inserted into place on the chuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the utility model.

[0030] Figure 2 for Figure 1 main view.

[0031] Figure 3 It is a schematic diagram of the three-dimensional structure of the loading platform of an embodiment of the utility model (workpieces are placed on the conveyor line).

[0032] Figure 4 for Figure 3 Top view of the .

[0033] Figure 5 It is a three-dimensional structural schematic diagram of the in-place detection component of the loading platform in the embodiment of the utility model (a workpiece is placed on the figure).

[0034] Figure 6 for Figure 5 Right view of .

[0035] Figure 7 for Figure 5 Top view of the .

[0036] Figure 8 It is a schematic diagram of the partial three-dimensional structure of the object picking robot according to an embodiment of the utility model.

[0037] Fig. 9 for Figure 8 main view.

[0038] Fig.10 This is a schematic diagram of the structure of the combined mechanical claw on the pick-up robot of the utility model embodiment (compared to Figure 8 rotated by an angle).

[0039] Fig.11 for Fig.10 Top view of the .

[0040] Fig.12 for Figure 8 Front view of the combined mechanical claw.

[0041] Fig.13 The three-dimensional structural schematic diagram of the feeding claw is shown in the embodiment of the utility model.

[0042] Fig.14 for Fig.13 main view.

[0043] Fig.15 for Fig.13 Right view of .

[0044] Fig.16The longitudinal section view shows the ejector pin structure on the feeding claw in the embodiment of the utility model.

[0045] Fig.17 It is a schematic diagram of the three-dimensional structure of the feeding claw of the embodiment of the utility model after clamping the shaft section of the hub bearing with the proximal clamping fingers.

[0046] Fig.18 It is a schematic diagram of the three-dimensional structure of the feeding claw of the embodiment of the utility model after clamping the flange section of the hub bearing by using the distal clamping fingers. DETAILED DESCRIPTION

[0047] The following is further described in detail through specific implementation methods:

[0048] The reference numerals in the drawings of the specification include: a loading platform 100 , a picking robot 200 , a machining device 300 , and a through hole 301 .

[0049] Loading table 100: conveyor line 101, in-place detection component 102, positioning plate 1, guide port 11, air avoidance groove 12, in-place sensor 2, trigger rod 21, compression rod 211, fixing plate 212, baffle 213, first elastic member 22, induction switch 23, mounting bracket 231, linear bearing 24, guide plate 103, material taking sensor 104, and material replenishing sensor 105.

[0050] The picking robot 200: a mover 201, a linear mover 2011, a lifting mover 2012, a rotary driver 202, a rotary shaft 2021, a loading claw 203, a discharging claw 204, a clamping claw 3, a driver 4, a near clamping finger 31, a far clamping finger 32, a ejector pin 33, a needle head 331, a needle sleeve 332, an elastic body 333, a pushing frame 5, and a second elastic member 6.

[0051] The embodiment is basically as shown in the attached Figures 1 to 18 shown.

[0052] Combination Figure 1 and Figure 2 A production system for a wheel hub bearing includes a loading platform 100, a picking robot 200 and a machining device 300. The picking robot 200 is used to pick up the workpiece from the loading platform 100 and send it to the machining device 300 for processing (a through hole 301 is provided on the top of the machining device 300 to facilitate the picking robot 200 to move from the top to the inside of the machining device 300). The picking robot 200 is also used to remove the processed workpiece from the machining device 300.

[0053] Specifically, combined Figures 3 to 7The loading platform 100 includes a conveyor line 101 and an in-place detection component 102 installed on a frame. The conveyor line 101 is responsible for conveying the workpiece from the input end to the output end. The in-place detection component 102 is located at the output end of the conveyor line 101 and is used to detect whether the workpiece has reached a predetermined position (such as a pickup position). The conveyor line 101 adopts a chain plate conveyor line 101.

[0054] The in-place detection component 102 is composed of a positioning plate 1 and an in-place sensor 2. The positioning plate 1 is fixedly mounted on the frame, and a plurality of V-shaped guide openings 11 are processed on the positioning plate 1, and a clearance groove 12 is provided in the center of the guide opening 11, and each guide opening 11 corresponds to an in-place sensor 2.

[0055] In order to guide the workpiece to smoothly enter the guide port 11, a plurality of guide plates 103 are arranged above the conveyor line 101, and the guide plates 103 are fixedly mounted on the frame. A moving channel for the workpiece is formed between adjacent guide plates 103, and the output end of the moving channel faces the guide port 11. In this way, the workpiece can be guided by the guide plates 103 during the conveying process and accurately enter the in-place detection area.

[0056] Each in-position sensor 2 includes a trigger rod 21, a first elastic member 22 and a sensing switch 23. The sensing switch 23 is fixedly mounted on the positioning plate 1 through a mounting bracket 231. A support frame is fixed on the positioning plate 1. A linear bearing 24 is fixedly mounted on the support frame. The trigger rod 21 is slidably connected to the linear bearing 24. The sliding direction of the trigger rod 21 is parallel to the conveying direction of the conveyor line 101. The sensing switch 23 of this embodiment is a proximity switch.

[0057] The trigger rod 21 includes a compression rod 211, a fixed plate 212, a sliding rod and a baffle 213 which are fixedly connected in sequence. The compression rod 211 is used to abut against the workpiece, and the sliding rod is slidably connected to the linear bearing 24. One end of the sliding rod is fixed to the fixed plate 212, and the other end is fixed to the baffle 213. The baffle 213 and the fixed plate 212 are located on both sides of the linear bearing 24. After the baffle 213 moves, it can block the light of the induction switch 23, thereby triggering the induction switch 23 to send a signal.

[0058] The fixing plate 212 penetrates the avoidance groove 12 on the positioning plate 1, and the compression rod 211 is fixed to the lower end of the fixing plate 212. The compression rod 211 is used to be pushed against by the non-clamping position of the workpiece, so as to realize the movement of the trigger rod 21.

[0059] The first elastic member 22 on the trigger rod 21 is a spring, which is sleeved on the slide rod, one end of the spring abuts against the fixed plate 212, and the other end of the spring abuts against the linear bearing 24. The spring is used to provide a reset force for the trigger rod 21. When the workpiece moves close to the guide port 11, the workpiece will push against the compression rod 211, so that the trigger rod 21 moves as a whole toward the induction switch 23. When the trigger rod 21 moves to a certain position, it will trigger the induction switch 23, thereby sending a signal.

[0060] In order to realize automatic material picking and material replenishment control of the workpieces at the output end, the loading platform 100 of this embodiment also includes a fixedly installed material picking sensor 104 and a material replenishment sensor 105. The material picking sensor 104 is used to sense the entire row of workpieces at the output end. When the material picking sensor 104 does not sense the existence of workpieces at the output end, the conveyor line 101 is controlled to start so that the workpieces on the conveyor line 101 move toward the output end.

[0061] The replenishing sensor 105 is used to sense the Nth row of workpieces arranged at the output end (N is greater than 1). When the replenishing sensor 105 does not sense the workpiece, the conveyor line 101 is also controlled to start to replenish the workpiece. The value of N in this embodiment is 2, so that when there are missing workpieces in the second row, no matter whether there are workpieces at the output end (that is, the first row), the conveyor line 101 is controlled to start, thereby ensuring that there are always workpieces in the second row, avoiding the output end from lacking parts for too long and reducing production efficiency.

[0062] In this embodiment, the material taking sensor 104 and the material replenishing sensor 105 are both opposite-beam photoelectric switches.

[0063] The method of using the workpiece loading platform 100 of this embodiment is as follows:

[0064] Step I, feeding of the conveyor line 101: The conveyor line 101 conveys the workpieces. When there are workpieces in both the first row and the second row at the output end of the conveyor line 101, the material taking sensor 104 and the material replenishing sensor 105 are both triggered, and the conveyor line 101 stops conveying.

[0065] Step II, the picking robot 200 takes the workpiece at the accurate position. When the workpiece moves into the guide port 11 along with the conveyor line 101, the workpiece pushes the trigger rod 21 until the trigger rod 21 triggers the sensing switch 23. At this time, the sensing switch 23 senses that there is a workpiece to be picked up at the corresponding position of the guide port 11, which facilitates the picking robot 200 to pick up the workpiece moved to the position to be picked up. In summary, the workpiece loading platform 100 provided in this embodiment realizes automatic detection of the workpiece in place and precise control of the conveyor line 101 by designing the in-place detection component 102, the picking sensor 104 and the replenishing sensor 105. The loading platform 100 has the advantages of simple structure, easy operation, and the ability to accurately deliver the workpiece to the position to be picked up, which is helpful for the subsequent picking robot 200 to pick up the workpiece accurately.

[0066] Combination Figure 8 and Fig. 9 The picking robot 200 includes a space mover 201 and a combined mechanical claw. The space mover 201 is used to drive the combined mechanical claw to move in space, such as driving the combined mechanical claw to lift and move horizontally. The space mover 201 can adopt the existing truss robot body, or other structures. For example, the space mover 201 includes a horizontally arranged linear mover 2011 and a vertically arranged lifting mover 2012. The lifting mover 2012 is installed at the output end of the horizontally arranged linear mover 2011, and the combined mechanical claw is installed at the output end of the lifting mover 2012. The lifting mover 2012 is used to drive the combined mechanical claw to lift and lower; the horizontally arranged linear mover 2011 is used to drive the combined mechanical claw to move horizontally, and the horizontal direction is parallel to the axial direction of the hub bearing after being clamped by the chuck.

[0067] Combination Figures 10 to 12 The combined mechanical claw includes a rotary driver 202, a loading claw 203 and a unloading claw 204. The loading claw 203 and the unloading claw are 90 degrees apart. The loading claw 203 and the unloading claw 204 are both installed on the output end of the rotary driver 202. The rotary driver 202 is used to drive the loading claw 203 or the unloading claw to rotate to the working position. In this embodiment, the rotary driver 202 adopts a rotary cylinder.

[0068] The loading claw 203 and the unloading claw 204 are both used to stably clamp the wheel hub bearing, so as to facilitate the subsequent processing operation of the wheel hub bearing.

[0069] The loading claw 203 and the unloading claw 204 each include a plurality of jaws 3, which are always located on the same circle and evenly distributed in the circumferential direction of the circle. The plurality of jaws 3 are connected to the same driver 4, and the driver 4 is used to drive the plurality of jaws 3 to synchronously approach each other or synchronously move away from each other. In this embodiment, the number of jaws 3 of the loading claw 203 and the unloading claw 204 are both three, and the driver 4 and the jaws 3 constitute a jaw 3 cylinder.

[0070] Each clamping jaw 3 is equipped with a near clamping finger 31 and a far clamping finger 32. The distance between the near clamping finger 31 and the center of the circle is smaller than the distance between the far clamping finger 32 and the center of the circle. This design allows the near clamping finger 31 to clamp the shaft section of the hub bearing, while the far clamping finger 32 is used to clamp the flange section of the hub bearing.

[0071] The distal clamping finger 32 can also be adjusted in the axial position along the circumferential center axis on the clamping jaw 3. In order to achieve this function, the clamping jaw 3 is provided with a plurality of mounting holes, which are arranged axially, and each mounting hole can be used to fix and install the distal clamping finger 32. In this way, by selecting different mounting holes to install the distal clamping finger 32, the axial position of the distal clamping finger 32 on the clamping jaw 3 can be adjusted to adapt to hub bearings of different sizes.

[0072] The connection between the proximal clamping finger 31 and the clamping jaw 3 is threaded or screwed (in this embodiment, the proximal clamping finger 31 on the unloading jaw 204 is screwed, and the proximal clamping finger 31 on the loading jaw 203 is threaded). The axial direction of the thread of the proximal clamping finger 31 coincides with the radial direction of the circumference. Such a connection method allows the proximal clamping finger 31 to be fine-tuned in the radial direction of the circumference to better adapt to the shaft segment size of the hub bearing. The specific proximal clamping finger 31 includes a threaded segment and a clamping head fixed into one body. The clamping head is used to clamp the workpiece. A nut is threadedly connected to the threaded segment. The threaded segment is threadedly connected to the clamping jaw 3. When the length of the proximal clamping finger 31 extending out of the clamping jaw 3 is adjusted, the nut is used to move toward the clamping jaw 3 to tighten the proximal clamping finger 31.

[0073] There is a distance between the near clamping finger 31 and the far clamping finger 32 in the projection direction of the center line of the circumference.

[0074] Combination Figures 13 to 18 Compared with the unloading clamp, the loading clamp also has an elastic ejector pin 33 and a push frame 5. Specifically, an ejector pin 33 is installed on each clamping jaw 3 of the loading clamp, and the end of the ejector pin 33 is located between the distal clamping finger 32 and the proximal clamping finger 31. The ejector pin 33 is used to push the flange surface of the workpiece. An elastic body 333 is arranged between the ejector pin 33 and the clamping jaw 3. The deformation direction of the elastic body 333 is parallel to the circumferential center line. The elastic body 333 is like a spring, which can compensate for the surface size error on the wheel hub bearing blank to a certain extent, and ensure that the workpiece can be stably pushed into the chuck of the machining equipment 300.

[0075] The ejector pin 33 is also designed as a detachable structure for easy replacement and maintenance; specifically, the ejector pin 33 includes a needle head 331 and a needle sleeve 332, the needle head 331 is slidably connected to the needle sleeve 332, the needle head 331 is used to push the workpiece, and the needle head 331 extends out of the needle sleeve 332, an elastic body 333 is installed in the needle tube, the elastic body 333 can be a spring, one end of the elastic body 333 is against one end of the needle head 331 that penetrates into the needle sleeve 332, and the other end of the elastic body 333 is tightly pressed against the clamping jaw 3, and the needle sleeve 332 is fixed on the clamping jaw 3.

[0076] The pushing frame 5 on the loading clamp is slidably connected to the housing of the driver 4 of the loading clamp along the circumferential center line direction. A second elastic member 6 is connected between the pushing frame 5 and the driver 4. The second elastic member 6 is such as a spring. The near clamping finger 31 is located between the pushing frame 5 and the far clamping finger 32.

[0077] Specifically, the pushing frame 5 includes an integrally formed pushing center and three pushing rods evenly distributed along the circumference of the pushing center. The pushing center is opposite to the center of the circle enclosed by the multiple clamps 3. The pushing rod slides on the housing of the driver 4 along the center line of the circle. A second elastic member 6 (such as a spring) is arranged between the pushing rod and the housing of the driver 4.

[0078] After the loading claw 203 initially feeds the hub bearing (workpiece) onto the chuck of the processing equipment, the mechanical claw is controlled to approach the chuck, so that the pushing frame 5 pushes the shaft end face of the hub bearing to move, so that the hub bearing can be placed in place on the chuck. The design of the second elastic member 6 can provide a certain buffering effect during the clamping process to avoid damage to the hub bearing.

[0079] When this embodiment is in use, the loading clamp is used to load the workpiece, and the unloading clamp is used to unload the processed workpiece. When the loading claw 203 and the unloading claw 204 are required to correspond to a machining equipment 300, if there is a processed workpiece on the chuck of the machining equipment 300, it is necessary to first use the unloading claw 204 to unload the workpiece, and then use the loading claw 203 to load the chuck with the workpiece to be processed.

[0080] The specific unloading method is as follows: first control the rotary driver 202 to rotate the unloading clamp to the working position (the loading claw 203 or the unloading claw 204 in the working position is aligned with the workpiece on the chuck), then the machined chuck releases its clamping of the workpiece, and the unloading claw 204 clamps the workpiece (when the flange section of the workpiece faces the unloading claw 204, the far clamping finger 32 of the unloading claw 204 clamps the flange section of the workpiece; when the shaft section of the workpiece faces the unloading claw 204, the near clamping finger 31 of the unloading claw 204 clamps the shaft section of the workpiece), and finally control the mechanical claw to move away from the chuck, thereby removing the workpiece from the chuck to achieve unloading.

[0081] The specific loading process is as follows: first control the rotary driver 202 to rotate the loading clamp to the working position; when it is necessary to clamp the flange section of the hub bearing for loading, use the three distal clamping fingers 32 on the loading clamp to clamp the periphery of the flange section of the workpiece (i.e., the hub bearing), and then control the mechanical claw to approach the chuck and insert the shaft section of the workpiece into the chuck. Because the inserted workpiece cannot be completely inserted into place at one time, after releasing the distal clamping fingers 32, control the loading claw 203 to move closer to the chuck, so that the elastic ejector pin 33 can push against the flange surface of the workpiece, thereby achieving complete insertion of the workpiece on the chuck and ensuring stable and accurate placement of the workpiece on the chuck.

[0082] When it is necessary to clamp the shaft section of the hub bearing for loading, the three near-clamping fingers 31 on the clamping jaws 3 are used to clamp the outer periphery of the shaft section of the workpiece (i.e., the hub bearing), and then the loading jaws 203 are controlled to approach the chuck, and the flange section of the workpiece is inserted into the chuck. Because the inserted workpiece cannot be completely inserted into place at one time, after releasing the near-clamping fingers 31, the loading jaws 203 are controlled to move closer to the chuck, so that the elastic pushing frame 5 can push against the end face of the shaft section of the workpiece, thereby achieving complete insertion of the workpiece on the chuck and ensuring stable and accurate placement of the workpiece on the chuck.

[0083] The loading clamp and unloading clamp of the present embodiment both have a double-layer clamping structure (far clamping finger 32 and near clamping finger 31), so that the clamping of the same hub bearing in different directions can be achieved by using the same loading claw 203 / unloading claw 204, whether loading / unloading, thereby achieving the unification and generalization of the mechanical claws, helping to reduce the management cost and difficulty of the mechanical claws, and improving the practicality of the mechanical claws.

[0084] In addition, the arrangement of the elastic ejector pin 33 and the elastic push frame 5 of the loading claw 203 in this embodiment enables the loading claw 203 to adjust the position of the tool inserted into the chuck of the processing equipment, ensuring that the workpiece can be stably and accurately loaded onto the chuck, which helps to achieve dimensional consistency during machining, thereby ensuring the processing quality.

[0085] The method for using the production system of the wheel hub bearing of this embodiment includes the following steps:

[0086] S1. Pick up the workpiece to be processed: use the loading claw 203 of the picking robot 200 to pick up the workpiece located at the picking position on the loading platform 100, and then use the space mover 201 of the picking robot 200 to drive the combined mechanical claw to move to the machining equipment 300.

[0087] S2. The unloading claw 204 takes the workpiece processed on the machining equipment 300: the combined mechanical claws of the picking robot 200 are controlled to change the positions of the loading claw 203 and the unloading claw 204, so that the unloading claw 204 is driven by the rotary driver 202 to rotate to the working position, that is, to align with the chuck, and then the unloading claw 204 is used to take the processed workpiece off.

[0088] S3. The loading claw 203 feeds the workpiece to be processed into the chuck of the machining equipment 300: the combined mechanical claws of the picking robot 200 are controlled to change the positions of the loading claw 203 and the unloading claw 204, so that the loading claw 203 is driven by the rotary driver 202 to rotate to the working position, and then the picking robot 200 is used to feed the workpiece to be processed into the chuck of the machining equipment 300.

[0089] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A wheel hub bearing production system, comprising a loading platform, a pick-up manipulator and machining equipment, wherein the loading platform comprises a conveyor line and an in-place detection component located at the output end of the conveyor line, characterized in that: The in-place detection component includes a positioning plate and an in-place sensor. The positioning plate is provided with a guide opening. When the workpiece moves into the guide opening, the in-place sensor can be triggered.

2. A wheel hub bearing production system according to claim 1, characterized in that: The in-place sensor includes a trigger rod, a first elastic member and a sensing switch. The sensing switch is fixedly installed. The trigger rod is slidably connected to a positioning plate or a frame. The sliding direction of the trigger rod is parallel to the conveying direction of the conveyor line. A first elastic member is arranged between the trigger rod and the positioning plate / frame. The trigger rod can trigger the sensing switch.

3. A wheel hub bearing production system according to claim 1, characterized in that: There are multiple guide openings, and each guide opening corresponds to an in-position sensor.

4. A wheel hub bearing production system according to claim 3, characterized in that: A plurality of guide plates are arranged above the conveying line, and a moving channel for the workpiece is formed between adjacent guide plates, and the output end of the moving channel faces the guide port.

5. A wheel hub bearing production system according to claim 1, characterized in that: The loading table also includes a fixedly installed feeding sensor, which is used to sense the Nth / row of workpieces arranged at the output end. The workpiece closest to the guide port is called the 1st / row of workpieces. Here, the value of N is greater than 1. When the feeding sensor does not sense the workpiece, the conveyor line is controlled to start.

6. A wheel hub bearing production system according to any one of claims 1 to 5, characterized in that: The picking robot includes a space mover and a combined mechanical claw. The space mover is used to drive the combined mechanical claw to move from the picking position of the loading platform to the machining equipment. The combined mechanical claw includes a rotary drive, a loading claw and a unloading claw. The loading claw and the unloading claw are both installed on the rotary drive. The rotary drive is used to drive the loading claw or the unloading claw to rotate to the working position.

7. A wheel hub bearing production system according to claim 6, characterized in that: The loading claw and the unloading claw both include a plurality of clamping claws that can approach or move away from each other and are located on the same circumference, each clamping claw is provided with clamping fingers, the clamping fingers include near clamping fingers and far clamping fingers, and the distance between the near clamping fingers and the center of the circumference is smaller than the distance between the far clamping fingers and the center of the circumference.

8. A wheel hub bearing production system according to claim 7, characterized in that: The near clamping finger and the far clamping finger can be detachably connected to the clamping claw.

9. A wheel hub bearing production system according to claim 8, characterized in that: An elastic ejector pin is also installed on the clamping jaw of the feeding claw, and the end of the ejector pin is located between the far clamping finger and the near clamping finger.

10. A wheel hub bearing production system according to claim 9, characterized in that: The feeding claw also includes an elastic pushing frame, and the near clamping finger is located between the pushing frame and the far clamping finger.

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