Swing rod bearing automatic assembly tool and control and precision compensation method thereof

Abstract

The invention discloses a swing rod bearing automatic assembly tool and a control and precision compensation method thereof, and relates to the technical field of swing rod bearing assembly.The assembly tool comprises a first feeding mechanism, a second feeding mechanism, a third feeding mechanism and a fourth feeding mechanism, the detection mechanism is arranged on the first feeding mechanism, and the detection mechanism is used for carrying out rotation detection on the bearing outer ring below the swing rod bearing main body; the second feeding mechanism is used for conveying the flange end cover to a second clamping position; the conveying mechanism comprises a conveying assembly and a clamping assembly, the clamping assembly is arranged corresponding to the first clamping position and the second clamping position, and under transmission of the conveying assembly, the clamping assembly is used for clamping and transferring the flange end cover at the second clamping position and the swing rod bearing body at the first clamping position to the press-fitting position; the press-fitting mechanism is used for press-fitting the swing rod bearing main body and the flange end cover at the press-fitting position together; by means of the assembling tool, quality control over bearing parts before assembling is achieved.

Description

Technical Field

[0001] This invention belongs to the field of rocker arm bearing assembly technology, specifically relating to an automatic assembly fixture for rocker arm bearings and its control and precision compensation method. Background Technology

[0002] The rocker arm bearing is not perpendicular to the center line of the bearing inner hole; there is a non-90° angle. When the inner ring of the bearing rotates, the ball bearing drives the rocker arm of the outer ring to reciprocate through the guidance of the annular track groove. It is widely used in power tools such as electric hammers and reciprocating saws to achieve the design goals of lightweight, portability, and simplified transmission mechanism.

[0003] Currently, for production such as Figure 1 When assembling the rocker arm bearing parts shown, the rocker arm bearing body needs to be assembled first, and then pressed onto the flange end cover. Existing press-fitting equipment on the market is usually semi-automated, directly placing the end cover and rocker arm bearing body in sequence onto the press-fitting station for pressing and assembling the bearing parts. However, no further testing or verification is performed to check whether the rotation quality of the bearing outer ring under the rocker arm bearing body meets the usage requirements before press-fitting, which affects the overall performance of the rocker arm bearing parts after press-fitting, indicating inadequate product quality control. Summary of the Invention

[0004] The purpose of this invention is to provide a simple and reasonably designed automatic assembly fixture for rocker arm bearings, as well as its control and precision compensation method, in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] Firstly, this invention provides an automatic assembly fixture for rocker arm bearings, comprising: The first feeding mechanism is used to transport the rocker arm bearing body to the first clamping position; The testing mechanism is set on the first feeding mechanism and is used to perform rotation testing on the outer ring of the bearing below the main body of the rocker arm bearing. The second feeding mechanism is used to transport the flange end cap to the second clamping position; The conveying mechanism includes a conveying component and a clamping component. The clamping component is arranged corresponding to the first clamping position and the second clamping position. Under the drive of the conveying component, the clamping component is used to clamp and transfer the flange end cover at the second clamping position and the rocker arm bearing body at the first clamping position to the pressing position, respectively. The press-fitting mechanism is used to press the rocker arm bearing body and the flange end cover together at the press-fitting position.

[0007] As a further optimization of the present invention, the first feeding mechanism includes a first feeding seat, in which a T-shaped feeding groove is provided. The outer ring of the bearing below the main body of the rocker arm bearing is located in the feeding groove, and a plurality of the main bodies of the rocker arm bearing are distributed in an orderly manner along the extension direction of the feeding groove.

[0008] As a further optimization of the present invention, the detection mechanism includes a top-loading assembly, an active friction wheel, a driven friction wheel, a laser emitter, and a laser receiver. The active friction wheel is located above the first loading seat, and a drive motor is driven to the input end of the active friction wheel. The driven friction wheel is located above the first loading seat and is rotatably mounted on a base. The base is fixedly disposed on one side of the first loading seat. A laser receiver is embedded at the lower end of the driven friction wheel. The laser emitter is disposed on the base and is used to receive the emission signal from the laser emitter. Along the conveying direction of the swing arm bearing body, the driven friction wheel is located in front of the active friction wheel. Baffles are symmetrically arranged on both sides of the loading groove in the front section of the first loading seat. The top-loading assembly is disposed on one side of the first loading seat and is used to move the swing arm bearing body from the driven friction position to the active friction position. A first pushing drive is disposed on one side of the first loading seat, and a first pushing block is disposed at the output end of the first pushing drive. The first pushing block is used to push the defective swing arm bearing body located in the first clamping position into the dropping seat. When the rocker arm bearing body is in the driven friction position, the outer ring sidewall of the rocker arm bearing body rubs against the driving friction wheel; when the rocker arm bearing body moves to the driving friction position, the outer ring sidewall of the rocker arm bearing body rubs against the driven friction wheel.

[0009] As a further optimization of the present invention, the top material assembly includes a top material seat, a top material drive, a translation seat and a translation drive, the output end of the translation drive is driven to the translation seat, the translation seat is provided with the top material drive, the output end of the top material drive is driven to the top material seat, and the first loading seat is provided with a translation groove. In the initial state, the top material seat is located in the translation groove and the upper end face of the top material seat is lower than the bottom face of the feeding groove; When the top material seat supports the main body of the rocker arm bearing until the main body of the rocker arm bearing is in the driven friction position, the outer ring of the bearing protrudes outside the first material seat, and the upper part of the side of the active friction wheel rubs against the side of the outer ring of the bearing. Driven by the translation drive, the top material seat lifts the rocker arm bearing body and moves it forward along the extension direction of the translation groove until the rocker arm bearing body is in the active friction position.

[0010] As a further optimization of the present invention, the second feeding mechanism includes a platform, a pusher platform, a second pusher block, and a second feeding seat. Along the feeding direction of the flange end cover in the second feeding seat, the pusher platform is provided at the front end of the second feeding seat. The platform is provided on one side of the pusher platform, and the platform surface and the pusher platform surface are flush. The input end of the second pusher block is drivenly connected to a second pusher drive component.

[0011] As a further optimization of the present invention, the clamping assembly includes a first adjusting arm, a second adjusting arm, a clamping drive member, and a gripper. The output end of the first adjusting arm is drivenly connected to the second adjusting arm, and the output end of the second adjusting arm is drivenly connected to the clamping drive member. The clamping drive members are arranged in pairs, and the output end of the clamping drive member is drivenly connected to the gripper.

[0012] As a further optimization of the present invention, the conveying assembly includes a drive wheel, a drive belt, a slider, a slide block, a first shifting seat, and a first shifting drive component. The drive wheels are arranged in pairs, and the drive belt is sleeved on the drive wheels. One of the drive wheels is driven to a drive motor at its input end. The lower end of the slider is fixedly mounted on the drive belt and is also slidably connected to the slide block. The upper end of the slider is slidably connected to the first shifting seat via a slide rail. The input end of the first shifting seat is driven to a first shifting drive component. The sliding direction of the slider is perpendicular to the sliding direction of the first shifting seat.

[0013] As a further optimization of the present invention, the pressing mechanism includes a lower pressing seat, an upper pressing seat, and a pressing drive component. The lower pressing seat is fixedly mounted on a support seat. A lifting guide column is fixedly mounted on the upper end of the support seat. An upper seat is fixedly mounted on the upper end of the lifting guide column. A pressing drive component is mounted on the upper end of the upper seat. A lower seat is fixedly connected to the output end of the pressing drive component. An upper pressing seat is fixedly mounted on the lower end of the lower seat. A sleeve is fixedly connected to the lower seat. The sleeve is slidably sleeved on the lifting guide column. A stop column is also fixedly mounted on the upper end of the support seat. The stop column is located below the lower seat. The upper press base is fixedly provided with an upper limit post at its lower end, and the lower press base is fixedly provided with a lower limit seat at its upper end. A guide post is slidably connected in the lower press base, and a spring is fixedly connected to the lower end of the guide post. The upper end of the guide post passes through the lower limit seat, and a lower limit post is fixedly provided at the end of the guide post located outside the lower limit seat.

[0014] Secondly, the present invention also provides a control and precision compensation method for automatic assembly of rocker arm bearings, applied to the aforementioned automatic assembly fixture for rocker arm bearings, the method comprising the following steps: The first feeding mechanism transports the main body of the rocker arm bearing to the first clamping position, and the detection mechanism performs rotation detection on the outer ring of the bearing below the main body of the rocker arm bearing, leaving the qualified rocker arm bearing main body in the first clamping position. The flange end cap is conveyed to the second clamping position via the second feeding mechanism; The flange end cap at the second clamping position and the rocker arm bearing body at the first clamping position are sequentially clamped and moved to the press-fit position by the corresponding clamping components. At this time, the flange end cap is located below the rocker arm bearing body. The rocker arm bearing body and flange end cover at the pressing position are pressed together by a pressing mechanism.

[0015] As a further optimization of the present invention, the detection mechanism includes a top material assembly, an active friction wheel, a driven friction wheel, a laser emitter, and a laser receiver. The step of the detection mechanism detecting the rotation of the outer ring of the bearing below the main body of the rocker arm bearing includes: The top material assembly lifts the main body of the rocker bearing in the feeding trough to the driven friction position, so that the side wall of the outer ring of the bearing comes into frictional contact with the active friction wheel. Continue to move the rocker arm bearing body forward with the help of the top material assembly until the rocker arm bearing body is in the active friction position, so that the outer ring sidewall of the bearing comes into frictional contact with the driven friction wheel. At this time, the laser receiver intermittently receives signals from the laser emitter. The number of times the laser receiver intermittently receives signals is used to reflect the rotational flexibility of the outer ring of the bearing. The rocker arm bearing body with the rotational flexibility of the outer ring of the bearing is left in the first clamping position, waiting to be clamped by the clamping assembly.

[0016] The present invention has at least the following beneficial effects: The present invention provides an automatic assembly fixture for rocker arm bearings and its control and precision compensation method. The automatic assembly fixture for rocker arm bearings includes a first feeding mechanism, a detection mechanism, a second feeding mechanism, a conveying mechanism, and a pressing mechanism. The first feeding mechanism and the second feeding mechanism respectively convey the rocker arm bearing body and the flange end cover in an orderly manner, and the pressing mechanism automatically presses and assembles the two. The detection mechanism is set on the first feeding mechanism to detect the rotation of the bearing outer ring below the rocker arm bearing body to ensure that the rotation flexibility of the bearing outer ring meets the standard before pressing, so as to ensure the performance of the bearing parts after pressing. Moreover, by using the active friction wheel in the testing mechanism to actively rub the outer ring of the bearing, and by using the passive friction wheel to receive the passive friction of the outer ring of the bearing, the number of signals received by the laser receiver from the laser emitter directly reflects the rotation of the passive friction wheel, and indirectly reflects the rotational flexibility of the outer ring of the bearing. This enables the performance testing of the outer ring of the bearing at the press-fit position of the rocker arm bearing body, without causing disassembly damage to the outer ring of the bearing. In addition, the press-fitting mechanism includes a lower press-fitting seat, an upper press-fitting seat, and a press-fitting drive component. Even if the position of the part clamped by the gripper assembly is slightly off, the lower limit seat can limit the flange end cover, and the lower and upper limit posts can limit the rocker arm bearing body in both directions, ensuring the press-fitting accuracy between the rocker arm bearing body and the flange end cover. Furthermore, the spring in the lower press-fitting seat can be used to push the guide post up the press-fitted part, achieving material ejection accuracy compensation and ensuring that the finished part is ejected in a consistent position. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the rocker arm bearing component of the present invention; Figure 2 This is a schematic diagram of the overall structure of the assembly tooling of the present invention; Figure 3 This is a front view structural schematic diagram of the pressing mechanism of the present invention; Figure 4 This is the present invention. Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the structure of the first feeding mechanism and the detection mechanism of the present invention; Figure 6 This is a schematic diagram of the structure of the first feeding mechanism and the detection mechanism of the present invention when they are in their initial positions; Figure 7 This is a schematic diagram of the structure of the rocker arm bearing body of the present invention when it is in the driven friction position; Figure 8 This is a schematic diagram of the structure of the rocker arm bearing body of the present invention when it is in the active friction position; Figure 9 This is a schematic diagram of the structure of the second feeding mechanism of the present invention; Figure 10 This is a schematic diagram of the clamping assembly and conveying mechanism of the present invention.

[0018] In the diagram: 1. Rocker arm bearing body; 11. Flange end cover; 12. Bearing outer ring; 13. Shaft core hole; 2. Second feeding mechanism; 201. Platform; 202. Pushing platform; 203. Second pushing block; 204. Second pushing drive; 205. Second feeding seat; 21. Clamping assembly; 211. First adjusting arm; 212. Second adjusting arm; 213. Clamping drive; 214. Gripper; 3. Conveying mechanism; 31. Drive wheel; 32. Drive belt; 33. Slide; 34. Slider; 35. First shifting drive; 36. First shifting seat; 4. First feeding mechanism; 41. First feeding seat; 42. Feeding trough; 43. Dropping seat; 44. First pushing block. 45. First pusher drive component; 46. Translation drive component; 47. Translation seat; 48. Ejector drive component; 49. Ejector seat; 410. Translation groove; 411. Baffle; 5. Detection mechanism; 51. Active friction wheel; 52. Drive motor; 53. Driven friction wheel; 54. Laser emitter; 541. Laser receiver; 55. Base; 6. Pressing mechanism; 61. Support seat; 62. Lower pressing seat; 621. Lower limit post; 622. Guide post; 623. Lower limit seat; 624. Spring; 63. Upper pressing seat; 631. Upper limit post; 64. Pressing drive component; 65. Upper seat; 66. Lifting guide post; 67. Lower seat; 68. Sleeve; 69. Abutment post. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly placed when the product of this application is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] like Figure 1 , Figure 2 As shown, the present invention provides an automatic assembly fixture for a rocker arm bearing, comprising: The first feeding mechanism 4 is used to transport the rocker arm bearing body 1 to the first clamping position; The detection mechanism 5 is set on the first feeding mechanism 4. The detection mechanism 5 is used to detect the rotation of the outer ring 12 of the bearing below the main body 1 of the rocker arm bearing. The second feeding mechanism 2 is used to transport the flange end cap 11 to the second clamping position; The conveying mechanism 3 includes a conveying component and a clamping component 21. The clamping component 21 is arranged corresponding to the first clamping position and the second clamping position. Under the transmission of the conveying component, the clamping component 21 is used to clamp and transfer the flange end cover 11 at the second clamping position and the rocker arm bearing body 1 at the first clamping position to the pressing position, respectively. The pressing mechanism 6 is used to press the rocker arm bearing body 1 and the flange end cover 11 together at the pressing position.

[0022] The testing mechanism 5 performs quality inspection on the rocker arm bearing body 1 before it is conveyed to the first clamping position. The main focus is on the rotation of the outer bearing ring 12 below the rocker arm bearing body 1 to ensure that the rotational flexibility of the outer bearing ring 12 meets the requirements before press-fitting. This ensures the assembly quality between the rocker arm bearing body 1 and the flange end cover 11 after press-fitting, guaranteeing the quality of the assembly. Figure 1 The overall performance of the rocker arm bearing components shown demonstrates multiple controls over product quality.

[0023] It should be noted that further reading is required. Figure 3 and Figure 4 The pressing mechanism 6 includes a lower pressing seat 62, an upper pressing seat 63, and a pressing drive component 64. The lower pressing seat 62 is fixedly mounted on a support seat 61. A lifting guide column 66 is fixedly mounted on the upper end of the support seat 61. An upper seat 65 is fixedly mounted on the upper end of the lifting guide column 66. A pressing drive component 64 is mounted on the upper end of the upper seat 65. A lower seat 67 is fixedly connected to the output end of the pressing drive component 64. The upper pressing seat 63 is fixedly mounted on the lower end of the lower seat 67. A sleeve 68 is fixedly connected to the lower seat 67. The sleeve 68 is slidably sleeved on the lifting guide column 66. A stop column 69 is also fixedly mounted on the upper end of the support seat 61. The stop column 69 is located below the lower seat 67. The upper press base 63 is fixedly provided with an upper limit post 631 at its lower end, and the lower press base 62 is fixedly provided with a lower limit seat 623 at its upper end. A guide post 622 is slidably connected in the lower press base 62, and a spring 624 is fixedly connected to the lower end of the guide post 622. The upper end of the guide post 622 passes through the lower limit seat 623, and a lower limit post 621 is fixedly provided at the end of the guide post 622 located outside the lower limit seat 623.

[0024] The press-fit drive component 64 is a lifting hydraulic cylinder or an electric telescopic cylinder. The clamping assembly first precisely places the flange end cover 11 onto the lower limit seat 623, with the top of the lower limit seat 623 located in the cover groove of the flange end cover 11. At this time, the guide post 622 penetrates the opening of the corresponding mounting bearing outer ring 12 on the flange end cover 11. Then, with the help of another clamping assembly, the rocker arm bearing body 1 is moved above the flange end cover 11. At this time, the lower limit post 621 extends into the lower hole portion of the shaft core hole 13 of the rocker arm bearing body 1, and the guide post 622 supports the outer edge of the shaft core hole 13. Furthermore, the press-fitting drive 64 drives the upper press-fitting seat 63 to move down until the upper limit post 631 extends into the upper hole of the shaft core hole 13, thereby achieving vertical positioning of the rocker arm bearing body 1; under the continued drive of the press-fitting drive 64, the rocker arm bearing body 1 is pressed and moved. At this time, the guide post 622 presses down the spring 624 until the lower seat 67 abuts against the abutment post 69, stopping the drive of the press-fitting drive 64, indicating that the rocker arm bearing body 1 has moved down to the position where the bearing outer ring 12 is pressed into the flange end cover 11; the press-fitting drive 64 is lifted, and under the reset action of the spring 624, the guide post 622 will... Figure 1 The part shown is lifted up, and the reset force of spring 624 achieves the compensation of the lifting accuracy, ensuring that the finished part is ejected in a consistent position. Thus, the part is accurately removed from the pressing position by the material picking robot (not shown in the figure). The part will not be misaligned after pressing, which would cause the robot to pick up the part roughly or even drop it, so that it can be ready for the pressing of the next part.

[0025] It should be noted that, at the press-fit position, after the flange end cover 11 and the rocker arm bearing body 1 are respectively moved to the press-fit position, before press-fitting, a pressure rod (not shown in the figure) can be placed above the bearing outer ring 12. When the upper press-fit seat 63 moves down to abut against the upper end face of the rocker arm bearing body 1, the upper press-fit seat 63 will also abut against the pressure rod, so that the pressure rod moves down synchronously, so that the rocker arm bearing body 1 and the bearing outer ring 12 are simultaneously subjected to downward pressure, and the bearing outer ring 12 is pressed into the mounting hole of the flange end cover 11.

[0026] For example, see [link to relevant documentation]. Figure 5 The first feeding mechanism 4 includes a first feeding seat 41, in which a T-shaped feeding groove 42 is provided. The outer ring 12 of the bearing below the rocker arm bearing body 1 is located in the feeding groove 42, while the rocker arm, rocker arm outer ring, rocker arm shaft and other components of the rocker arm bearing body 1 are distributed outside the feeding groove 42. Multiple rocker arm bearing bodies 1 are orderly distributed along the extension direction of the feeding groove 42.

[0027] For example, see [link to relevant documentation]. Figure 5 and Figure 6The detection mechanism 5 includes a top-loading assembly, an active friction wheel 51, a driven friction wheel 53, a laser emitter 54, and a laser receiver 541. The active friction wheel 51 is located above the first loading seat 41, and a drive motor 52 is connected to the input end of the active friction wheel 51. The driven friction wheel 53 is located above the first loading seat 41 and is rotatably mounted on a base 55. The base 55 is fixedly disposed on one side of the first loading seat 41. The laser receiver 541 is embedded in the lower end of the driven friction wheel 53. The laser emitter 54 is disposed on the base 55, and the laser receiver 541 is used to receive the laser emitted by the laser emitter 54. The signal is emitted, and along the conveying direction of the rocker arm bearing body 1, the driven friction wheel 53 is located in front of the active friction wheel 51. The feed groove 42 of the front part of the first feed seat 41 is symmetrically provided with baffles 411 on both sides. The top material assembly is provided on one side of the first feed seat 41. The top material assembly is used to move the rocker arm bearing body 1 from the driven friction position to the active friction position. A first push material drive 45 is provided on one side of the first feed seat 41. A first push material block 44 is provided at the output end of the first push material drive 45. The first push material block 44 is used to push the defective rocker arm bearing body 1 located in the first clamping position into the drop material seat 43. like Figure 5 As shown, the rocker arm bearing body 1 is conveyed in an orderly manner. After the rocker arm bearing body 1 is moved to the outside of the feeding trough 42, it is lifted by the top material assembly to the driven friction position, as shown. Figure 7 As shown, at this time, the drive motor 52 drives the active friction wheel 51 to rotate, and the active friction wheel 51 rubs against the side wall of the outer ring 12 of the rocker arm bearing body 1, causing the outer ring 12 of the bearing to rotate; when the rocker arm bearing body 1 moves to the active friction position, as Figure 8As shown, the outer ring 12 of the rocker arm bearing body 1 rubs against the driven friction wheel 53. At this time, the rotating outer ring 12 causes friction that drives the driven friction wheel 53, thereby causing the laser receiver 541 to rotate synchronously with the driven friction wheel 53. The laser receiver 541 will only receive a signal when it rotates directly above the laser emitter 54. For every revolution of the driven friction wheel 53, the laser receiver 541 receives one signal. Therefore, the number of times the laser receiver 541 intermittently receives signals under the rotation of the driven friction wheel 53 directly reflects the rotation frequency of the driven friction wheel 53, and indirectly reflects the rotation frequency of the outer ring 12 of the bearing. To illustrate the rotational flexibility of the bearing outer ring 12, for a part that meets the usage requirements, under the frictional drive of the active friction wheel 51, the bearing outer ring 12 rotates, driving the driven friction wheel 53 to rotate thirty times (the specific parameters can be selected according to the quality requirements of the part, and are not limited here). However, if the driven friction wheel 53 rotates less than thirty times, it means that the rotational flexibility of the bearing outer ring 12 is not up to standard. When the rocker arm bearing body 1 is moved to the first clamping position, it will be pushed into the dropping seat 43 by the first pusher block 44, and the next rocker arm bearing body 1 that meets the quality requirements will be moved to the first clamping position to await clamping by the clamping assembly.

[0028] It should be noted that friction pads are provided on the side walls of both the driven friction wheel 53 and the driving friction wheel 51 to increase the friction transmission effect between the driven friction wheel 53 and the outer ring 12 of the bearing and the friction transmission effect between the driving friction wheel 51 and the outer ring 12 of the bearing.

[0029] For example, see [link to relevant documentation]. Figure 5 and Figure 6 The top material assembly includes a top material seat 49, a top material drive 48, a translation seat 47, and a translation drive 46. For example, the top material drive 48 and the translation drive 46 are both hydraulic telescopic cylinders. The output end of the translation drive 46 is driven to the translation seat 47. The translation seat 47 is provided with the top material drive 48. The output end of the top material drive 48 is driven to the top material seat 49. The first loading seat 41 has a translation groove 410. In the initial state, such as Figure 6 As shown, the top material seat 49 is located in the translation groove 410 and the upper end face of the top material seat 49 is lower than the bottom face of the feeding groove 42. It should be noted that the upper end of the top material seat 49 has a limiting ring. After the rocker arm bearing body 1 is conveyed to the top material seat 49, the top material drive 48 drives the top material seat 49 to move upward and lift the rocker arm bearing body 1. At this time, the limiting ring is located in the lower hole of the shaft core hole 13 of the rocker arm bearing body 1, which limits the shaft core of the rocker arm bearing body 1. Even if the outer ring 12 of the bearing is rotated by friction, the shaft core of the rocker arm bearing body 1 will not deflect. Continue reading Figure 7When the top material seat 49 supports the rocker arm bearing body 1 until the rocker arm bearing body 1 is in the driven friction position, the outer ring 12 of the bearing protrudes out of the first loading seat 41, and the upper part of the side of the active friction wheel 51 rubs against the side of the outer ring 12 of the bearing. At this time, the outer ring 12 of the bearing is driven to rotate by the active friction wheel 51. Driven by the translation drive 46, the outer ring 12 of the bearing disengages from the friction of the active friction wheel 51, causing the top support 49 to lift the rocker arm bearing body 1 and move it forward along the extension direction of the translation groove 410 until the rocker arm bearing body 1 is in the active friction position. Figure 8 As shown, the rotating outer ring 12 of the bearing will cause the driven friction wheel 53 to rotate due to friction.

[0030] Continue reading Figure 9 The second feeding mechanism 2 includes a platform 201, a pusher platform 202, a second pusher block 203, and a second feeding seat 205. Along the feeding direction of the flange end cover 11 in the second feeding seat 205, the pusher platform 202 is provided at the front end of the second feeding seat 205. The platform 201 is provided on one side of the pusher platform 202, and the platform surface of the platform 201 is flush with the platform surface of the pusher platform 202. The input end of the second pusher block 203 is connected to a second pusher drive 204. Under the drive of the second pusher drive 204, the second pusher block 203 pushes the flange end cover 11 on the pusher platform 202 onto the platform 201. At this time, the flange end cover 11 is located in the second clamping position.

[0031] It should be noted that further reading is required. Figure 10 The clamping assembly 21 includes a first adjusting arm 211, a second adjusting arm 212, a clamping drive 213, and a gripper 214. The output end of the first adjusting arm 211 is drivenly connected to the second adjusting arm 212, and the output end of the second adjusting arm 212 is drivenly connected to the clamping drive 213. The clamping drive 213 is arranged in pairs, and the output end of the clamping drive 213 is drivenly connected to the gripper 214. By adjusting the vertical position of the first adjusting arm 211 and the horizontal position of the second adjusting arm 212 (which are both electric telescopic cylinders), the clamping accuracy of the gripper 214 is adjusted, allowing the gripper 214 driven by the clamping drive 213 to smoothly clamp the parts. The clamping assemblies 21 are arranged in pairs, one for clamping the flange end cap 11 and the other for clamping the rocker arm bearing body 1.

[0032] For further reference Figure 10The conveying assembly includes a drive wheel 31, a drive belt 32, a slider 34, a slide block 33, a first shifting seat 36, and a first shifting drive component 35. The drive wheels 31 are arranged in pairs, and the drive belt 32 is sleeved on the drive wheel 31. The input end of one of the drive wheels 31 is connected to a drive motor (not shown in the figure). The lower end of the slider 34 is fixedly mounted on the drive belt 32. Under the drive of the drive motor, the drive wheel 31 drives the drive belt 32 to rotate, causing the slider 34 to move in the direction of movement of the drive belt 32. The lower end of the slider 34 is also slidably connected to the slide block 33. The upper end of the slider 34 is slidably connected to the first shifting seat 36 through a slide rail. The input end of the first shifting seat 36 is connected to the first shifting drive component 35. The first shifting drive component 35 is a hydraulic telescopic cylinder. The sliding direction of the slider 34 is perpendicular to the sliding direction of the first shifting seat 36.

[0033] It should be noted that, under the transmission of the first shifting drive 35 and the drive motor, the first shifting seat 36 is shifted two-dimensionally in the horizontal plane. For example, taking the clamping assembly on the right as an example, after the gripper 214 clamps the flange end cover 11, the first shifting seat 36 moves towards the first shifting drive 35, and under the drive of the drive motor, the slider 34 moves to the left. The first shifting drive 35 then drives the first shifting seat 36 to move away from the first shifting drive 35, and places the flange end cover 11 on the lower limit seat 623. Similarly, in the clamping assembly on the left, the gripper 214 clamps the rocker arm shaft... After the bearing body 1 is clamped, the first shift seat 36 moves toward the direction of the first shift drive 35, and under the drive of the drive machine, the slider 34 moves to the right, and the first shift drive 35 drives the first shift seat 36 to move away from the first shift drive 35, and places the rocker arm bearing body 1 on the guide post 622. In order to improve working efficiency, when the right clamping assembly clamps and picks up the flange end cover 11, the left clamping assembly releases the rocker arm bearing body 1, and when the left clamping assembly clamps and picks up the rocker arm bearing body 1, the right clamping assembly releases the flange end cover 11.

[0034] In other embodiments, the present invention also provides a control and precision compensation method for automatic assembly of rocker arm bearings, applied to the above-mentioned automatic assembly fixture for rocker arm bearings, the method comprising the following steps: The first feeding mechanism 4 transports the rocker arm bearing body 1 to the first clamping position, and the detection mechanism 5 performs rotation detection on the bearing outer ring 12 below the rocker arm bearing body 1, leaving the qualified rocker arm bearing body 1 in the first clamping position. The flange end cap 11 is conveyed to the second clamping position by the second feeding mechanism 2; The flange end cap 11 at the second clamping position and the rocker arm bearing body 1 at the first clamping position are sequentially clamped and moved to the press-fit position by the corresponding clamping assembly 21. At this time, the flange end cap 11 is located below the rocker arm bearing body 1. The rocker arm bearing body 1 and the flange end cover 11 at the pressing position are pressed together by the pressing mechanism 6.

[0035] The detection mechanism 5 includes a top material assembly, an active friction wheel 51, a driven friction wheel 53, a laser emitter 54, and a laser receiver 541. The step of the detection mechanism 5 to perform rotation detection on the outer ring 12 of the bearing below the rocker arm bearing body 1 includes: The rocker arm bearing body 1 in the feeding trough 42 is lifted to the driven friction position by the top material assembly, so that the side wall of the bearing outer ring 12 rubs against the active friction wheel 51. The rocker arm bearing body 1 continues to move forward with the support of the top material assembly until it is in the active friction position, so that the side wall of the bearing outer ring 12 rubs against the driven friction wheel 53. At this time, the laser receiver 541 intermittently receives the signal from the laser transmitter 54. The number of times the laser receiver 541 intermittently receives the signal is used to reflect the rotational flexibility of the bearing outer ring 12. The rocker arm bearing body 1 with the rotational flexibility of the bearing outer ring 12 meets the standard is left in the first clamping position, waiting to be clamped by the clamping assembly 21.

[0036] It should be noted that, in use, the flange end cover 11 of the automatic assembly fixture for the rocker arm bearing is transported to the pusher table 202 in an orderly manner, and the second pusher block 203 is driven by the second pusher drive 204 to push the flange end cover 11 to the carrier table 201, that is, the flange end cover 11 is located in the second clamping position. The rocker arm bearing body 1 is conveyed in an orderly manner along the feeding trough 42. When the rocker arm bearing body 1 is conveyed outside the feeding trough 42, the top material drive 48 drives the top material seat 49 to move upward, lifting the rocker arm bearing body 1. Figure 7 As shown, the side of the bearing outer ring 12 rubs against the upper part of the side of the active friction wheel 51. Under the drive of the drive motor 52, the bearing outer ring 12 is driven to rotate by the active friction wheel 51. As the translation drive component 46 drives, the top material seat 49 moves forward along the direction of the translation groove 410. During the forward movement, the bearing outer ring 12 continues to rotate until... Figure 8As shown in the diagram, the rocker arm bearing body 1 is in the active friction position. The side wall of the bearing outer ring 12 rubs against the driven friction wheel 53. The rotating bearing outer ring 12 causes the driven friction wheel 53 to rotate synchronously with the driven friction wheel 53. The number of times the laser receiver 541 receives signals intermittently directly reflects the rotation frequency of the driven friction wheel 53, and indirectly reflects the rotation frequency of the bearing outer ring 12, i.e., the rotational flexibility of the bearing outer ring 12. The rocker arm bearing body 1 that meets the quality standard is placed back onto the first loading seat 41 by the top material seat 49, ready to be picked up by the gripper 214. For those that do not meet the quality standard, the rocker arm bearing body 1 is placed back onto the first loading seat 41 by the top material seat 49, and the first pusher drive 45 drives the first pusher block 44, causing the first pusher block 44 to push the rocker arm bearing body 1 to fall into the dropping seat 43. This allows for a re-control of the quality of the rocker arm bearing body 1 before pressing, ensuring the quality of subsequent pressing. Under the transmission of the first shifting drive 35 and the drive motor, the first shifting seat 36 is shifted two-dimensionally in the horizontal plane, thereby enabling the clamping assembly on the first shifting seat 36 to clamp the corresponding parts, including the flange end cover 11 and the rocker arm bearing body 1. The flange end cover 11 is first placed on the lower limit seat 623 using the clamping assembly, with the guide post 622 penetrating the opening of the corresponding mounting bearing outer ring 12 on the flange end cover 11. Then, the rocker arm bearing body 1 is moved above the flange end cover 11 using another clamping assembly. At this time, the lower limit post 621 extends into the lower hole portion of the shaft core hole 13 of the rocker arm bearing body 1 and guides... The column 622 supports the outer edge of the shaft core hole 13, and the press-fitting drive 64 drives the upper press-fitting seat 63 to move down until the upper limit column 631 extends into the upper hole of the shaft core hole 13, thereby achieving vertical positioning of the rocker arm bearing body 1; under the continued drive of the press-fitting drive 64, the rocker arm bearing body 1 is pressed and moved. At this time, the guide column 622 presses down the spring 624 until the lower seat 67 abuts against the abutment column 69, stopping the drive of the press-fitting drive 64, indicating that the rocker arm bearing body 1 has moved down to the position where the bearing outer ring 12 is pressed into the flange end cover 11; the press-fitting drive 64 is lifted, and under the reset action of the spring 624, the guide column 622 will... Figure 1 The part shown is lifted up, and thus removed from the press position by a robotic arm, ready for the press-fitting of the next part.

[0037] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. An automatic assembly fixture for a rocker arm bearing, characterized in that, include: The first feeding mechanism (4) is used to transport the rocker arm bearing body (1) to the first clamping position; The detection mechanism (5) is set on the first feeding mechanism (4). The detection mechanism (5) is used to perform rotation detection on the outer ring (12) of the bearing below the main body (1) of the rocker arm bearing. The second feeding mechanism (2) is used to transport the flange end cap (11) to the second clamping position; The conveying mechanism (3) includes a conveying component and a clamping component (21). The clamping component (21) is set to correspond to the first clamping position and the second clamping position. Under the transmission of the conveying component, the clamping component (21) is used to clamp and transfer the flange end cap (11) at the second clamping position and the rocker arm bearing body (1) at the first clamping position to the pressing position respectively. The pressing mechanism (6) is used to press the rocker arm bearing body (1) and the flange end cover (11) together at the pressing position.

2. The automatic assembly fixture for a rocker arm bearing according to claim 1, characterized in that, The first feeding mechanism (4) includes a first feeding seat (41), in which a T-shaped feeding groove (42) is provided. The outer ring (12) of the bearing below the swing arm bearing body (1) is located in the feeding groove (42), and multiple swing arm bearing bodies (1) are distributed in an orderly manner along the extension direction of the feeding groove (42).

3. The automatic assembly fixture for a rocker arm bearing according to claim 2, characterized in that, The detection mechanism (5) includes a top-loading assembly, an active friction wheel (51), a driven friction wheel (53), a laser emitter (54), and a laser receiver (541). The active friction wheel (51) is located above the first loading seat (41), and a drive motor (52) is connected to the input end of the active friction wheel (51). The driven friction wheel (53) is located above the first loading seat (41) and is rotatably mounted on a base (55). The base (55) is fixedly mounted on one side of the first loading seat (41). A laser receiver (541) is embedded at the lower end of the driven friction wheel (53). The laser emitter (54) is mounted on the base (55), and the laser receiver (541) is used to receive laser light. The transmitter (54) transmits a signal, and along the conveying direction of the rocker arm bearing body (1), the driven friction wheel (53) is located in front of the active friction wheel (51), and baffles (411) are symmetrically arranged on both sides of the feeding groove (42) of the front section of the first feeding seat (41). The top material assembly is arranged on one side of the first feeding seat (41). The top material assembly is used to move the rocker arm bearing body (1) from the driven friction position to the active friction position. A first push material drive (45) is arranged on one side of the first feeding seat (41). A first push material block (44) is arranged at the output end of the first push material drive (45). The first push material block (44) is used to push the defective rocker arm bearing body (1) located in the first clamping position into the dropping seat (43). When the rocker arm bearing body (1) is in the driven friction position, the side wall of the bearing outer ring (12) of the rocker arm bearing body (1) rubs against the active friction wheel (51); when the rocker arm bearing body (1) moves to the active friction position, the side wall of the bearing outer ring (12) of the rocker arm bearing body (1) rubs against the driven friction wheel (53).

4. The automatic assembly fixture for a rocker arm bearing according to claim 3, characterized in that, The top material assembly includes a top material seat (49), a top material drive (48), a translation seat (47), and a translation drive (46). The output end of the translation drive (46) is connected to the translation seat (47). The top material drive (48) is provided on the translation seat (47). The output end of the top material drive (48) is connected to the top material seat (49). The first top material seat (41) has a translation groove (410) in the row. In the initial state, the top material seat (49) is located in the translation groove (410) and the upper end face of the top material seat (49) is lower than the bottom face of the feeding groove (42); When the top material seat (49) supports the rocker arm bearing body (1) until the rocker arm bearing body (1) is in the driven friction position, the outer ring (12) of the bearing protrudes out of the first loading seat (41), and the upper part of the side of the active friction wheel (51) rubs against the side of the outer ring (12). Driven by the translation drive (46), the top material seat (49) lifts the rocker arm bearing body (1) and moves it forward along the extension direction of the translation groove (410) until the rocker arm bearing body (1) is in the active friction position.

5. The automatic assembly fixture for a rocker arm bearing according to claim 4, characterized in that, The second feeding mechanism (2) includes a platform (201), a pusher platform (202), a second pusher block (203), and a second feeding seat (205). Along the feeding direction of the flange end cover (11) in the second feeding seat (205), the pusher platform (202) is provided at the front end of the second feeding seat (205). The platform (201) is located on one side of the pusher platform (202), and the platform surface of the platform (201) and the platform surface of the pusher platform (202) are flush. The input end of the second pusher block (203) is connected to a second pusher drive (204).

6. The automatic assembly fixture for a rocker arm bearing according to claim 5, characterized in that, The clamping assembly (21) includes a first adjusting arm (211), a second adjusting arm (212), a clamping drive (213), and a gripper (214). The output end of the first adjusting arm (211) is connected to the second adjusting arm (212), and the output end of the second adjusting arm (212) is connected to the clamping drive (213). The clamping drive (213) is arranged in pairs, and the output end of the clamping drive (213) is connected to the gripper (214).

7. The automatic assembly fixture for a rocker arm bearing according to claim 6, characterized in that, The conveying assembly includes a drive wheel (31), a drive belt (32), a slider (34), a slide block (33), a first shifting seat (36), and a first shifting drive (35). The drive wheels (31) are arranged in pairs, and the drive belt (32) is sleeved on the drive wheel (31). The input end of one of the drive wheels (31) is connected to a drive motor. The lower end of the slider (34) is fixedly installed on the drive belt (32), and the lower end of the slider (34) is also slidably connected to the slide block (33). The upper end of the slider (34) is slidably connected to the first shifting seat (36) through a slide rail. The input end of the first shifting seat (36) is connected to the first shifting drive (35). The sliding direction of the slider (34) is perpendicular to the sliding direction of the first shifting seat (36).

8. The automatic assembly fixture for a rocker arm bearing according to claim 7, characterized in that, The pressing mechanism (6) includes a lower pressing seat (62), an upper pressing seat (63), and a pressing drive (64). The lower pressing seat (62) is fixedly mounted on a support seat (61). A lifting guide column (66) is fixedly mounted on the upper end of the support seat (61). An upper seat (65) is fixedly mounted on the upper end of the lifting guide column (66). A pressing drive (64) is mounted on the upper end of the upper seat (65). A lower seat (67) is fixedly connected to the output end of the pressing drive (64). An upper pressing seat (63) is fixedly mounted on the lower end of the lower seat (67). A sleeve (68) is fixedly connected to the lower seat (67). The sleeve (68) is slidably mounted on the lifting guide column (66). A stop column (69) is also fixedly mounted on the upper end of the support seat (61). The stop column (69) is located below the lower seat (67). The upper press base (63) is fixedly provided with an upper limit post (631) at its lower end, and the lower press base (62) is fixedly provided with a lower limit seat (623) at its upper end. A guide post (622) is slidably connected in the lower press base (62), and a spring (624) is fixedly connected to the lower end of the guide post (622). The upper end of the guide post (622) passes through the lower limit seat (623), and a lower limit post (621) is fixedly provided at the end of the guide post (622) located outside the lower limit seat (623).

9. A method for controlling and compensating for the precision of automatic assembly of a rocker arm bearing, characterized in that, The method applied to the automatic assembly fixture for the rocker arm bearing according to claim 1 includes the following steps: The first feeding mechanism (4) transports the rocker arm bearing body (1) to the first clamping position, and the detection mechanism (5) performs rotation detection on the bearing outer ring (12) below the rocker arm bearing body (1), leaving the qualified rocker arm bearing body (1) in the first clamping position. The flange end cap (11) is conveyed to the second clamping position by the second feeding mechanism (2); The flange end cap (11) at the second clamping position and the rocker arm bearing body (1) at the first clamping position are sequentially clamped and moved to the press-fit position by the corresponding clamping assembly (21). At this time, the flange end cap (11) is located below the rocker arm bearing body (1). The rocker arm bearing body (1) and the flange end cover (11) at the pressing position are pressed together by the pressing mechanism (6).

10. The control and precision compensation method for automatic assembly of a rocker arm bearing according to claim 9, characterized in that, The detection mechanism (5) includes a top material assembly, an active friction wheel (51), a driven friction wheel (53), a laser emitter (54), and a laser receiver (541). The step of the detection mechanism (5) to perform rotation detection on the outer ring (12) of the bearing below the main body (1) of the rocker arm bearing includes: The rocker arm bearing body (1) in the feeding trough (42) is lifted to the driven friction position by the top material assembly, so that the side wall of the bearing outer ring (12) rubs against the active friction wheel (51); Continue to move the rocker arm bearing body (1) forward with the help of the top material assembly until the rocker arm bearing body (1) is in the active friction position, so that the side wall of the bearing outer ring (12) rubs against the driven friction wheel (53). At this time, the laser receiver (541) intermittently receives the signal from the laser transmitter (54). The number of times the laser receiver (541) intermittently receives the signal is used to reflect the rotational flexibility of the bearing outer ring (12). The rocker arm bearing body (1) with the rotational flexibility of the bearing outer ring (12) meets the standard is left in the first clamping position, waiting to be clamped by the clamping assembly (21).

Images