Rapid and automatic centering, positioning, clamping and machining tool for rocker arm

Abstract

The invention discloses a quick and automatic centering, positioning, clamping and machining tool for a rocker arm. The positioning piece is mounted on the base and is configured to be matched and propped against a preset positioning part on the rocker arm so as to determine the left and right mounting positions of the rocker arm; the centering mechanism is mounted on the base and is configured to extend between the connecting lugs on the two sides of the rocker arm respectively and apply acting force which is equal in magnitude and opposite in direction in the front-back direction to the rocker arm at the same time, so that the rocker arm is centered and positioned in the front-back direction; and the clamping mechanism is mounted on the base and is configured to be tightly propped against the rocker arm so as to fix the rocker arm on the base. The positioning piece and the positioning part are automatically matched, meanwhile, the centering mechanism is used for centering the connecting lugs on the two sides at the same time, rapid and automatic positioning of the rocker arm is achieved, the tedious process of repeated measurement and adjustment of traditional manual positioning is avoided, the clamping time is shortened, the production efficiency is remarkably improved, the clamping positions are consistent each time, and the production efficiency is improved. And a solid foundation is laid for batch processing.

Description

Technical Field

[0001] This application relates to the field of automotive parts processing equipment technology, and in particular discloses a rocker arm quick automatic centering positioning clamping processing fixture. Background Technology

[0002] As a key connecting component in a mechanical transmission system, the rocker arm typically has a complex external structure and high dimensional accuracy requirements. During its machining process, in order to ensure subsequent assembly and performance, it is often necessary to accurately position and clamp it to ensure the consistency of the machining datum.

[0003] Currently, the industry generally uses traditional manual tooling for centering and clamping rocker arms. This type of tooling usually relies on operators to manually adjust the positioning blocks, use feeler gauges for measurement, and repeatedly adjust the position of the rocker arm to gradually achieve the positioning of the rocker arm in the left-right and front-back directions. In the clamping process, manual locking mechanisms such as bolt pressure plates are also commonly used.

[0004] However, this manual clamping method has significant shortcomings: First, it is inefficient, requiring a significant amount of time for manual centering and adjustment each time, severely impacting production efficiency; second, positioning accuracy is difficult to guarantee consistently, as its accuracy is highly dependent on the operator's experience and skill, making it prone to human error, resulting in poor product consistency and even significant processing deviations; third, it is labor-intensive, with repetitive manual operations easily causing worker fatigue, further affecting accuracy and efficiency; and finally, it is difficult to adapt to the needs of automated and intelligent production lines, becoming a bottleneck restricting the overall efficiency improvement of the production line, thus requiring improvement. Summary of the Invention

[0005] The purpose of this application is to provide a fast automatic centering, positioning, clamping, and machining fixture for rocker arms.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: a quick automatic centering and positioning clamping machining fixture for a rocker arm, comprising: a base; a positioning element, which is mounted on the base and configured to cooperate with a pre-set positioning part on the rocker arm to determine its left and right installation positions; a centering mechanism, which is mounted on the base and configured to extend between the connecting ears on both sides of the rocker arm, and simultaneously apply equal and opposite front-to-back forces to them, so that the rocker arm is centered and positioned in the front-to-back direction; and a clamping mechanism, which is mounted on the base and configured to tightly abut against the rocker arm to fix it on the base.

[0007] As a preferred embodiment, the positioning element includes a bracket and a support element. The bracket is fixedly mounted on the base, and the support element is assembled on the bracket and its extension length is adjustable. The support element has an abutment surface for contacting and engaging with the positioning part of the rocker arm. The abutment surface on any of the support elements forms a surface contact with the surface of the corresponding positioning part on the rocker arm.

[0008] In a further preferred embodiment, the support member is a threaded adjustment rod, and the support member is connected to the bracket by a thread. By adjusting the thread engagement length between the support member and the bracket, the extension length of the support member can be adjusted.

[0009] Further preferably, the positioning component adopts a three-point positioning layout, which includes a first positioning component, a second positioning component, and a third positioning component arranged sequentially from left to right. The rocker arm has a corresponding first positioning part, a second positioning part, and a third positioning part. After the rocker arm is placed on the base, under its own weight, the first positioning part, the second positioning part, and the third positioning part on it respectively fit and abut against the first positioning component, the second positioning component, and the third positioning component, thereby forming a three-point positioning support in the left and right directions to realize the automatic positioning of the rocker arm.

[0010] As a preferred embodiment, there are two pairs of connecting ears, including a first connecting ear and a second connecting ear. There are two centering mechanisms, which are disposed on the left and right sides of the base corresponding to the areas of the first connecting ear and the second connecting ear, respectively. After the rocker arm is placed on the base, the two centering mechanisms operate simultaneously to fit the inner surfaces of the first connecting ear and the second connecting ear, respectively, thereby centering the rocker arm in the front-back direction.

[0011] Further preferably, the centering mechanism includes a first driver, a slider, a linkage assembly, and a centering rod. The first driver is fixedly mounted on the base. The slider is fixedly connected to the output end of the first driver and is adapted to slide in the vertical direction. There are two sets of linkage assemblies symmetrically hinged to the slider. There are two centering rods, each hinged to the linkage assembly and adapted to slide in the front-back direction. After the rocker arm is placed on the base, the first driver operates to move the slider upward. The two sets of linkage assemblies deflect in the front-back direction, thereby causing the corresponding centering rods to slide in the front-back direction to abut against the inner side of the connecting ear and to center and position them in the front-back direction.

[0012] As a preferred embodiment, the clamping mechanism includes a mounting post, a second driver, and a clamping arm. The mounting post is fixedly disposed on the base, the second driver is mounted on the mounting post, and the clamping arm is connected to the output end of the second driver. After the rocker arm is placed on the base and positioned, the second driver drives the clamping arm to tightly abut against the surface of the rocker arm, thereby limiting its displacement.

[0013] Further preferably, the clamping mechanism includes a first clamping mechanism and a second clamping mechanism, and the rocker arm is provided with a first material-stealing groove and a second material-stealing groove. The first clamping mechanism is adapted to abut against the first material-stealing groove, and the second clamping mechanism is adapted to abut against the second material-stealing groove.

[0014] As a preferred embodiment, the base is further provided with a limiting element configured to prevent the rocker arm from disengaging from the front and rear positions.

[0015] More preferably, the limiting component includes at least a first limiting group and a second limiting group. The first limiting group includes two first limiting posts arranged in a front-to-back pattern on the left side of the base, and the second limiting group includes two second limiting posts arranged in a front-to-back pattern on the right side of the base. The height of both the first limiting posts and the second limiting posts is not lower than the highest point of the upper surface of the rocker arm at their corresponding installation positions.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: (1) This application achieves automatic positioning of the rocker arm by automatically cooperating with the positioning part and the pre-set positioning part on the rocker arm, and the centering mechanism simultaneously centers the connecting ears on both sides, realizing rapid automatic positioning of the rocker arm in the front, back and left and right directions. This avoids the tedious process of repeated measurement and adjustment in traditional manual positioning, greatly shortens the clamping time, significantly improves production efficiency, and ensures that the clamping position is consistent each time, laying a solid foundation for batch processing.

[0017] (2) The centering mechanism of this application ensures that the forces are equal in magnitude and opposite in direction, so that the rocker arm can automatically and accurately reach the centering state in the front and back directions, eliminating random errors caused by human judgment and operation. With the accurate contact of the positioning component, the positioning accuracy of the rocker arm each time it is clamped does not depend on the operator's skills. Therefore, the processing benchmark is unified, the product size is consistent, and the processing quality is stable and reliable.

[0018] (3) In this application, the entire positioning, centering and clamping process can be automated after the rocker arm is placed on the device, without the need for heavy manual operation, which greatly reduces the labor intensity, reduces the dependence on the operator's experience, and also reduces errors caused by fatigue.

[0019] (4) The processing tooling of this application can realize automated positioning and clamping, and can be integrated into automated production lines or processing units to realize fully automated production of rocker arms. It effectively solves the problem of mismatch between manual clamping and automated production cycle, and provides reliable process equipment support for the upgrade of fully automated production lines. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention in use.

[0021] Figure 2 This is a three-dimensional structural diagram of the present invention in use.

[0022] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 4 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 5 yes Figure 3 A magnified view of part A.

[0025] Figure 6 This is a schematic diagram of the centering mechanism of the present invention.

[0026] Figure 7 This is the main view of the usage state of the present invention.

[0027] In the diagram: 1. Base; 2. Positioning component; 21. Bracket; 22. Support component; 23. First positioning component; 24. Second positioning component; 25. Third positioning component; 3. Centering mechanism; 31. First driver; 32. Slider; 33. Linkage assembly; 34. Centering rod; 4. Clamping mechanism; 41. Mounting post; 42. Second driver; 43. Clamping arm; 44. First clamping mechanism; 45. Second clamping mechanism; 5. Rocker arm; 51. First positioning part; 52. Second positioning part; 53. Third positioning part; 54. First connecting ear; 55. Second connecting ear; 56. First material-stealing groove; 57. Second material-stealing groove; 6. Limiting component; 61. First limiting group; 62. Second limiting group. Detailed Implementation

[0028] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0030] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0031] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0032] In the industry, manual positioning and clamping are commonly used when machining rocker arms 5. This is time-consuming, labor-intensive, and inefficient. Existing tooling of this type typically relies on operators manually adjusting positioning blocks, using feeler gauges for measurement, and repeatedly adjusting the position of rocker arms 5 to gradually achieve positioning of the rocker arms 5 in the left-right and front-back directions. In the clamping process, manual locking mechanisms such as bolts and pressure plates are often used. This manual clamping method has significant shortcomings: First, clamping efficiency is low, requiring a significant amount of time for manual centering and adjustment each time, severely impacting production efficiency; second, positioning accuracy is difficult to guarantee consistently. Its accuracy is highly dependent on the operator's experience and skill level, which is prone to human error, resulting in poor product consistency and even a large number of processing deviations. Furthermore, the labor intensity is high, and repetitive manual operation can easily cause worker fatigue, further affecting accuracy and efficiency. Finally, it is difficult to adapt to the needs of automated and intelligent production lines, becoming a bottleneck restricting the overall efficiency improvement of the production line. Therefore, it is necessary to design a quick automatic centering, positioning, and clamping machining tool for the rocker arm 5. It should have automatic positioning and automatic clamping functions and be compatible with automatic machining centers or automated production lines to realize the automation of rocker arm 5 production.

[0033] A preferred embodiment of this application, such as Figures 1 to 7 As shown, a quick and automatic centering, positioning, and clamping machining fixture for a rocker arm 5 includes: Base 1.

[0034] Positioning component 2 is mounted on base 1 and is configured to engage with a pre-set positioning part on rocker arm 5 to determine its left and right installation positions.

[0035] The positioning component 2 includes a bracket 21 and a support component 22. The bracket 21 is fixedly installed on the base 1, and the support component 22 is assembled on the bracket 21 and its extension length is adjustable. The support component 22 has an abutment surface for contacting and engaging with the positioning part of the rocker arm 5. The abutment surface on any support component 22 forms a surface contact with the surface of the corresponding positioning part on the rocker arm 5.

[0036] More specifically, in some embodiments, the support member 22 can be configured as a threaded adjustment rod, and the support member 22 is connected to the bracket 21 by a thread. By adjusting the thread engagement length between the support member 22 and the bracket 21, the extension length of the support member 22 can be adjusted.

[0037] The threaded adjustment design can compensate for minor dimensional differences in rocker arms 5 caused by casting or machining tolerances in different batches, and can also adapt to wear on the contact surface of the support 22 caused by long-term use, ensuring positioning accuracy and long-term reliability. Of course, for different models of rocker arms 5, a certain degree of adaptation can be achieved through threaded adjustment. In some other embodiments, in order to achieve complete adaptation, angle adjustment mechanisms and distance adjustment mechanisms can be added, thereby adjusting the distance between each positioning component 2 and the angle of the contact surface on the support 22. The above settings can be adjusted by those skilled in the art according to actual needs.

[0038] In this embodiment, the positioning component 2 adopts a three-point positioning layout, which includes a first positioning component 23, a second positioning component 24, and a third positioning component 25 arranged sequentially from left to right. The rocker arm 5 has a first positioning part 51, a second positioning part 52, and a third positioning part 53 respectively. After the rocker arm 5 is placed on the base 1, under its own weight, the first positioning part 51, the second positioning part 52, and the third positioning part 53 on it fit and abut against the first positioning component 23, the second positioning component 24, and the third positioning component 25 respectively, thereby forming a three-point positioning support in the left and right directions to realize the automatic positioning of the rocker arm 5.

[0039] like Figure 7As shown, the first positioning part 51, the second positioning part 52, and the third positioning part 53 on the rocker arm 5 are located on the lower side of the first connecting ear 54, the lower side of the middle part of the rocker arm 5, and the lower side of the second connecting ear 55 of the rocker arm 5, respectively. Importantly, the contact angles between the contact surfaces of each positioning part and the support member 22 are different. For example, the contact surface on the lower side of the first connecting ear 54 faces slightly to the right, the contact surface on the lower side of the middle part of the rocker arm 5 faces slightly to the left, and the contact surface on the lower side of the second connecting ear 55 faces slightly to the right. At the same time, the angles of each positioning member 2 are respectively matched. This setting can ensure that the entire rocker arm 5 has multiple opposite-directional limits in the left and right directions, avoiding its left and right deviation. At the same time, this setting can ensure that the rocker arm 5 has a unique positioning point, ensuring the consistency of clamping of each rocker arm 5 during the production process, and ensuring the accuracy and consistency of the product after production.

[0040] In other embodiments, those skilled in the art can adjust the height, angle, distance, or number of each positioning element 2 according to the actual situation to adapt to rocker arms 5 of different sizes and shapes. It should also be noted that after the rocker arm 5 is placed in the device in this embodiment, it can be automatically positioned according to its own weight. Therefore, the setting of each positioning element 2 should also take into account that it is easy to adjust according to its own weight, so as to avoid the need for manual adjustment and positioning after setting.

[0041] Centering mechanism 3 is mounted on base 1 and is configured to extend between the connecting ears on both sides of rocker arm 5, and simultaneously apply equal and opposite forces in the front-to-back direction to rocker arm 5 so that rocker arm 5 is centered in the front-to-back direction.

[0042] In this embodiment, there are two pairs of connecting ears, including a first connecting ear 54 and a second connecting ear 55. There are two centering mechanisms 3, which are set on the left and right sides of the base 1, respectively corresponding to the areas of the first connecting ear 54 and the second connecting ear 55. After the rocker arm 5 is placed on the base 1, the two centering mechanisms 3 operate simultaneously to fit the inner surfaces of the first connecting ear 54 and the second connecting ear 55 respectively, so that the rocker arm 5 is centered in the front-back direction.

[0043] The centering mechanism 3 of this application can ensure that the forces are equal in magnitude and opposite in direction, so that the rocker arm 5 can automatically and accurately reach the centering state in the front and back directions, eliminating random errors caused by human judgment and operation. With the accurate contact of the positioning component 2, the positioning accuracy of the rocker arm 5 each time it is clamped does not depend on the operator's skills. Therefore, the processing benchmark is uniform, the product size is consistent, and the processing quality is stable and reliable.

[0044] To ensure that the forces acting on the splitting mechanism 3 in this application are equal in magnitude and opposite in direction, such as Figure 5 and Figure 6As shown, the specific structure can be set as follows: The centering mechanism 3 includes a first driver 31, a slider 32, a connecting rod assembly 33, and a centering rod 34. The first driver 31 is fixedly mounted on the base 1. The slider 32 is fixedly connected to the output end of the first driver 31 and is adapted to slide in the up-down direction. There are two sets of connecting rod assemblies 33, which are symmetrically hinged to the slider 32. There are two centering rods 34, which are respectively hinged to the connecting rod assembly 33 and are adapted to slide in the front-back direction. After the rocker arm 5 is placed on the base 1, the first driver 31 operates to move the slider 32 upward. The two sets of connecting rod assemblies 33 deflect in the front-back direction, so that the corresponding centering rods 34 slide in the front-back direction to abut against the inner side of the connecting ear and center it in the front-back direction.

[0045] In the above structure, a single first driver 31 drives the symmetrically arranged connecting rod assembly 33 through the slider 32, which can ensure that the two centering rods 34 move synchronously, at the same speed, and in opposite directions. This means that the forces they apply to the connecting ears on the left and right sides of the rocker arm 5 are always equal in magnitude and opposite in direction, truly achieving centering rather than simply pressing. Therefore, the centering accuracy is high. In addition, this embodiment is provided with two centering mechanisms 3 to center the connecting ears on both sides respectively, so that the rocker arm 5 will not be pushed away from the determined left and right positioning reference due to the force on one side.

[0046] The first actuator 31 in this application can be a hydraulic cylinder, a pneumatic cylinder, an electric cylinder, etc. In this embodiment, based on the production environment of the rocker arm 5, hydraulic cylinder drive can be preferred. This is a mature and common setting, and it is not unfamiliar to operators.

[0047] Of course, in other embodiments, the centering mechanism 3 can also adopt other structures, such as a gear rack driven by a motor. Those skilled in the art can adjust the structure according to actual needs. However, it should be noted that since this device can achieve mass production of rocker arms 5, the reliability of the corresponding structure and maintenance costs should also be taken into consideration. The cylinder + connecting rod structure used in this embodiment has high reliability, no complex transmission, low overall loss, and low failure rate. Even if a failure occurs, the maintenance cost is relatively low. Therefore, the structure of this embodiment is preferred when used in actual production.

[0048] It is worth mentioning that in this embodiment, a centering mechanism 3 is set up, and its mounting base is selected as bracket 21. More specifically, it is located on bracket 21 in the connecting ear area. In this way, the centering mechanism 3 is integrated with the positioning component 2. The positioning area corresponding to the positioning component 2 is itself the position of the connecting ear. Therefore, after the positioning component 2 is installed on the base 1, the centering mechanism 3 can directly center the connecting ear during the production process. This integrated setting has the following advantages: First, the device is more compact and easier to install; second, when it is used on adjustable tooling, for rocker arms 5 of different sizes and signals, only the position of bracket 21 needs to be adjusted. After adjustment, adaptive positioning adjustment and centering adjustment can be achieved, avoiding the need to adjust the centering mechanism 3 when it is installed separately, reducing complex operations and improving production efficiency.

[0049] This application achieves rapid automatic positioning of the rocker arm 5 by automatically cooperating with the positioning part 2 and the pre-set positioning part on the rocker arm 5, while the centering mechanism 3 simultaneously centers the connecting ears on both sides. This avoids the tedious process of repeated measurement and adjustment in traditional manual positioning, greatly shortens the clamping time, significantly improves production efficiency, and ensures consistent clamping position each time, laying a solid foundation for batch processing.

[0050] The clamping mechanism 4 is mounted on the base 1 and is configured to abut against the rocker arm 5 to fix it on the base 1. After positioning and alignment are completed, it can provide sufficient and stable clamping force to firmly press the rocker arm 5 against the positioning member 2 to resist cutting force and vibration during the machining process, prevent the rocker arm 5 from moving or bouncing, and ensure machining safety and quality.

[0051] Specifically, the clamping mechanism 4 includes a mounting post 41, a second driver 42, and a clamping arm 43. The mounting post 41 is fixedly mounted on the base 1, the second driver 42 is mounted on the mounting post 41, and the clamping arm 43 is connected to the output end of the second driver 42. After the rocker arm 5 is placed on the base 1 and positioned, the second driver 42 drives the clamping arm 43 to tightly abut against the surface of the rocker arm 5, thereby limiting its displacement.

[0052] The second drive 42 can also be selected from hydraulic cylinders, pneumatic cylinders, electric cylinders, etc. In this embodiment, based on the production environment of the rocker arm 5, hydraulic cylinder drive can be preferred. This is a mature and common setting, and it is not unfamiliar to the operators. In addition, selecting the same hydraulic cylinder drive as the first drive 31 makes it easier for later maintenance and repair as well as the installation of the overall equipment.

[0053] In this embodiment, the clamping mechanism 4 includes a first clamping mechanism 44 and a second clamping mechanism 45. The rocker arm 5 is provided with a first material-stealing groove 56 and a second material-stealing groove 57. The first clamping mechanism 44 is adapted to abut against the first material-stealing groove 56, and the second clamping mechanism 45 is adapted to abut against the second material-stealing groove 57.

[0054] The above design is quite ingenious. The clamping arm 43 can extend into the material-stealing groove without interfering with the shape or features of the rocker arm 5 to be processed. At the same time, the side of the material-stealing groove is usually a good force-bearing surface. The clamping force acts on the relatively thick area of ​​the rocker arm 5 body structure, reducing the risk of deformation of the rocker arm 5 under clamping force and cutting force during processing.

[0055] It should be noted that because the rocker arm 5 has an irregular shape, the material-stealing groove is also not regularly shaped. In order to achieve accurate clamping, the first clamping mechanism 44 and the second clamping mechanism 45 in this application need to be adaptively adjusted according to the shape of the material-stealing groove. For example, the upper surface of the mounting post 41 in the first clamping mechanism 44 is slightly tilted to the right. At this time, the axis of the second driver 42 is tilted to the right, and the clamping arm 43 is also tilted to the right, which corresponds to the tilt of the clamping area of ​​the first material-stealing groove 56. The upper surface of the mounting post 41 in the second clamping mechanism 45 is tilted to the left. At this time, the axis of the second driver 42 is tilted to the left, and the clamping arm 43 is also tilted to the left, which corresponds to the tilt of the clamping area of ​​the second material-stealing groove 57. Different clamping mechanisms 4 need to be set for rocker arms 5 of different sizes and models, which can be adjusted by those skilled in the art according to the actual situation.

[0056] In this application, placing the rocker arm 5 on the device enables the entire positioning, alignment, clamping, and fixing process to be automated, eliminating the need for heavy manual operations, greatly reducing labor intensity, decreasing reliance on operator experience, and minimizing errors caused by fatigue. The machining fixture of this application can achieve automated positioning and clamping, and can be integrated into automated production lines or processing units to achieve fully automated production of the rocker arm 5. This effectively solves the problem of mismatch between manual clamping and automated production cycle time, providing reliable process equipment support for the upgrade of fully automated production lines.

[0057] In this embodiment, a limiting member 6 is also provided on the base 1, which is configured to prevent the rocker arm 5 from disengaging from the front and rear positions.

[0058] It is clear that the limiting component 6 is used to coarsely limit and prevent the rocker arm 5 from slipping off the base 1 or colliding with the centering mechanism 3 when the rocker arm 5 is placed too far forward or backward. It is not a precise positioning component, but to prevent the rocker arm 5 from slipping off the base 1 or colliding with the centering mechanism 3 when it is placed too far forward or backward.

[0059] The limiting component 6 includes at least a first limiting group 61 and a second limiting group 62. The first limiting group 61 includes two first limiting posts arranged in a front-to-back pattern on the left side of the base 1. The second limiting group 62 includes two second limiting posts arranged in a front-to-back pattern on the right side of the base 1. The height of the first limiting post and the second limiting post is not lower than the highest point of the upper surface of the rocker arm 5 at their corresponding installation positions.

[0060] It is understandable that front and rear limiting posts are set on the left and right sides of the base 1 respectively, forming a simple limiting area, which can quickly guide the rocker arm 5 to be placed in the roughly correct front and rear area, so that precise front and rear positioning can be achieved under the action of the centering mechanism 3; at the same time, this embodiment sets the height of the limiting post to be no lower than the highest point of the upper surface of the rocker arm 5 in the corresponding area, so that it can effectively prevent the rocker arm 5 from accidentally falling off.

[0061] The design of the entire machining fixture described above embodies a standardized and automated clamping logic from positioning to centering and clamping. Simply placing the rocker arm 5 into the limiting area formed by the limiting component 6 and the positioning component 2 automatically completes the centering and clamping process, which may only take a few seconds, greatly reducing the time required for traditional manual operation. The mechanical three-point positioning and symmetrical centering eliminate errors caused by manual alignment, ensuring that the position of each product after clamping is completely consistent, which is crucial for the quality stability of batch processing. In addition, all centering and clamping are completed by the driver, making it very easy to link with the automation system to achieve automated production. The overall rigid structure design of the device, combined with the reasonable selection of positioning, support, and clamping points, can ensure the stability of the machining process and the safety of operation.

[0062] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A quick automatic centering positioning clamping processing tool for rocker arm, characterized in that, The utility model relates to a kind of positioning device for rocker arm, including: Base; Positioning part is installed on the base, it is configured with the preset positioning part of rocker arm and is matched with abutment to determine its left and right installation position;Centering mechanism is installed on the base, it is configured to respectively extend between the connecting lug of the rocker arm two sides, and simultaneously exert equal size, opposite direction's force in front-back direction to it, so that the rocker arm is positioned in front-back direction;Clamping mechanism is installed on the base, it is configured with the rocker arm and is closely contacted to be fixed on the base.

2. The quick automatic centering and clamping processing tool for rocker arm as claimed in claim 1, wherein, The positioning part includes support and support, the support is fixedly installed on the base, the support is assembled on the support, and the extension length thereof is adjustable, the support has abutment surface for contacting with the positioning part of the rocker arm, and the abutment surface on any support forms surface contact with the surface of the corresponding positioning part on the rocker arm.

3. The quick automatic centering and clamping processing tool for rocker arm as claimed in claim 2, wherein, The support is screw adjusting rod, the support is connected with the support by screw thread, and the extension length of the support is adjusted by adjusting the screw thread length of the support and the support.

4. The quick automatic centering and clamping processing tool for rocker arm as claimed in claim 2, wherein, The positioning part adopts three-point positioning layout, which includes first positioning part, second positioning part and third positioning part arranged from left to right, and the rocker arm has first positioning part, second positioning part and third positioning part correspondingly, after the rocker arm is placed on the base, the first positioning part, the second positioning part and the third positioning part on the rocker arm are respectively matched with the first positioning part, the second positioning part and the third positioning part under the action of gravity, so that three-point positioning support is formed in left-right direction, to realize the automatic positioning of the rocker arm.

5. The quick automatic centering and clamping processing tool for rocker arm as claimed in claim 1, wherein, The connecting lug has two pairs, including first connecting lug and second connecting lug, and the centering mechanism has two, which are arranged on the left and right sides of the base respectively corresponding to the areas of the first connecting lug and the second connecting lug, after the rocker arm is placed on the base, two centering mechanisms operate simultaneously to respectively match the inner side of the first connecting lug and the second connecting lug, so that the rocker arm is centered in front-back direction.

6. The quick automatic centering and clamping processing tool for rocker arm as claimed in claim 5, wherein, The centering mechanism includes first driver, slider, connecting rod assembly and centering rod, the first driver is fixedly arranged on the base, the slider is fixedly connected with the output end of the first driver and is suitable for sliding in up-down direction, the connecting rod assembly has two groups and is symmetrically hinged on the slider, the centering rod has two, which are respectively hinged on the connecting rod assembly and are suitable for sliding in front-back direction;After the rocker arm is placed on the base, the first driver operates to make the slider move upward, two groups of connecting rod assemblies are respectively deflected in front-back direction, so that the corresponding centering rods are respectively slid in front-back direction to respectively abut the inner side of the connecting lug, and make it positioned in front-back direction.

7. The quick automatic centering and clamping processing tool for rocker arm as claimed in claim 1, wherein, The clamping mechanism comprises a mounting column, a second driver and a clamping arm, the mounting column is fixedly arranged on the base, the second driver is assembled on the mounting column, and the clamping arm is connected with the output end of the second driver; after the rocker arm is placed on the base and positioning is completed, the second driver drives the clamping arm to tightly abut against the surface of the rocker arm, so that displacement of the rocker arm is limited.

8. The quick automatic centering and clamping processing tool for rocker arm as claimed in claim 7, wherein, The clamping mechanism comprises a first clamping mechanism and a second clamping mechanism, the rocker arm is provided with a first material stealing groove and a second material stealing groove, the first clamping mechanism is adapted to abut against the first material stealing groove, and the second clamping mechanism is adapted to abut against the second material stealing groove.

9. The quick automatic centering and clamping processing tool for rocker arm as claimed in claim 1, wherein, The base is further provided with a limiting piece configured to limit the rocker arm from being disengaged from the front and rear positions.

10. The quick automatic centering and clamping processing tool for rocker arm as claimed in claim 9, wherein, The limiting piece comprises at least a first limiting group and a second limiting group, the first limiting group comprises two first limiting columns arranged in front and back on the left part of the base, the second limiting group comprises two second limiting columns arranged in front and back on the right part of the base, and the heights of the first limiting columns and the second limiting columns are not lower than the highest points of the upper surfaces of the rocker arm at the corresponding mounting positions.

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