An outer ball cage angular positioning device

Abstract

The utility model relates to the technical field of ball cage detection positioning, and relates to an outer ball cage angular positioning device, which comprises a detection rack, a placing mechanism, a positioning mechanism and a driving cylinder are arranged on the detection rack, the placing mechanism comprises a placing rack and a positioning rack, a guide rod is arranged at the lower end of the positioning rack, the lower end of the guide rod is slidably arranged on the upper end of the placing rack and is externally sleeved with a buffer spring, the buffer spring is respectively abutted with the lower end of the positioning rack and the upper end of the placing rack, the positioning mechanism comprises a positioning plate, a rotary cylinder one and a positioning ball head, the piston rod tail end of the driving cylinder is fixedly connected with the positioning plate and is used for driving the positioning plate to go up and down. The utility model automatically completes the preliminary positioning, rotation alignment, accurate embedding and resetting of the outer ball cage through the programmed action of the driving cylinder and the rotary cylinder, and manual operation is not needed throughout.

Description

Technical Field

[0001] This utility model relates to the field of ball cage detection and positioning technology, and to an external ball cage angular positioning device. Background Technology

[0002] As a key component of the automotive transmission system, the angular positioning accuracy of the outer CV joint directly affects the power transmission efficiency and driving safety of the entire vehicle. In mass production, the outer CV joint needs to be angularly positioned to ensure the consistency of the reference for subsequent inspections (such as dynamic balancing and dimensional inspection) or assembly (such as welding with half shafts and connecting with universal joints). Therefore, the efficiency and accuracy of the positioning process are of paramount importance.

[0003] Traditional manual positioning relies on visual alignment, which is affected by operational experience, and the angle error often reaches ±5° or more, making it difficult to meet the requirements of high-precision assembly; at the same time, manual inspection is time-consuming and labor-intensive, resulting in low efficiency in production inspection. Utility Model Content

[0004] This invention provides an external ball cage angular positioning device to solve the problems of the prior art.

[0005] The objective of this utility model can be achieved through the following technical solution: An external ball cage angular positioning device, comprising: a detection frame, wherein a placement mechanism, a positioning mechanism, and a driving cylinder are provided on the detection frame; the placement mechanism includes a placement frame disposed at the lower end of the detection frame and a positioning frame disposed on the placement frame; a guide rod is provided at the lower end of the positioning frame; the lower end of the guide rod is slidably disposed at the upper end of the placement frame and is externally sleeved with a buffer spring; the two ends of the buffer spring respectively abut against the lower end of the positioning frame and the upper end of the placement frame; the positioning mechanism includes a positioning plate, a rotary cylinder disposed at the lower end of the positioning plate, and a positioning ball head disposed at the rotating end of the rotary cylinder; the piston rod end of the driving cylinder is fixedly connected to the positioning plate for driving the positioning plate to move up and down.

[0006] In a further improvement, a pneumatic gripper is provided at the upper end of the placement rack, and the pneumatic gripper is disposed between the placement rack and the positioning rack.

[0007] In a further improvement, a guide rail is provided at the upper end of the testing frame, and the side end of the positioning plate is slidably mounted on the guide rail. In a further improvement, a second rotary cylinder is provided at the lower end of the testing frame, and the side end of the positioning plate is located on the rotating end of the second rotary cylinder.

[0008] In a further improvement, a limiting plate is provided on the side end of the testing frame, and the limiting plate is disposed between the placement mechanism and the positioning mechanism.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model automatically completes the initial positioning, rotational alignment, precise embedding and resetting of the outer ball cage through the programmed actions of the drive cylinder and the rotary cylinder, without the need for manual operation throughout the entire process; 2. The elastic buffer design of the buffer spring in this utility model stabilizes the contact pressure between the positioning ball head and the outer ball cage within a safe range, avoiding scratches on the flange surface of the outer ball cage or wear on the positioning ball head caused by rigid collisions, thereby reducing the scrap rate of workpieces and equipment maintenance costs. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the structure of the outer ball cage of this utility model.

[0011] In the diagram, 1. Inspection frame; 11. Guide rail; 12. Rotary cylinder II; 13. Limiting plate; 2. Placement mechanism; 21. Placement frame; 22. Positioning frame; 221. Guide rod; 222. Buffer spring; 23. Pneumatic gripper; 3. Positioning mechanism; 31. Positioning plate; 32. Rotary cylinder I; 33. Positioning ball head; 4. Drive cylinder; 5. Outer ball cage; 51. Groove; 52. Transmission rod. Detailed Implementation

[0012] In the description of this utility model, it should be noted that the terms "center", "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. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0013] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0014] The following is a description of the embodiments and appendices. Figures 1-3 The technical solution of this utility model will be further described below.

[0015] Example 1 An external ball cage angular positioning device includes: a detection frame 1, on which a placement mechanism 2, a positioning mechanism 3, and a driving cylinder 4 are provided. The placement mechanism 2 includes a placement frame 21 disposed at the lower end of the detection frame 1 and a positioning frame 22 disposed on the placement frame 21. A guide rod 221 is disposed at the lower end of the positioning frame 22. The lower end of the guide rod 221 is slidably disposed at the upper end of the placement frame 21 and is externally sleeved with a buffer spring 222. The two ends of the buffer spring 222 abut against the lower end of the positioning frame 22 and the upper end of the placement frame 21, respectively. The positioning mechanism 3 includes a positioning plate 31, a rotary cylinder 32 disposed at the lower end of the positioning plate 31, and a positioning ball head 33 disposed at the rotating end of the rotary cylinder 32. The piston rod end of the driving cylinder 4 is fixedly connected to the positioning plate 31 for driving the positioning plate 31 to move up and down.

[0016] like Figures 1-3 As shown, in actual use, the transmission rod 52 of the outer ball cage 5 is first vertically inserted into the through hole in the middle of the positioning frame 22. The diameter of the through hole of the positioning frame 22 is matched with the outer diameter of the transmission rod 52, which can quickly limit the horizontal displacement of the outer ball cage and complete the initial centering. At this time, the groove 51 of the outer ball cage 5 faces upward. Secondly, the drive cylinder 4 is activated, and its piston rod retracts, causing the positioning plate 31 and the rotating cylinder 32 and positioning ball head 33 below it to descend synchronously. When the positioning ball head 33 approaches the flange end of the outer ball cage 5, the rotating cylinder 32 is activated, causing the positioning ball head 33 to rotate and find the angle that matches the groove 51. As the positioning mechanism continues to descend, the positioning ball head 33 first contacts the upper surface of the flange end of the outer ball cage. At this time, the guide rod 221 at the lower end of the positioning frame 22 slides downward along the guide hole of the placement frame 21, and the buffer spring 222 is compressed. The spring force buffers the downward pressure of the positioning mechanism, avoiding a rigid collision between the positioning ball head and the outer ball cage, effectively protecting the flange surface of the outer ball cage and the positioning ball head, and preventing the workpiece or equipment from being damaged by impact. During the continuous rotation of the positioning ball head 33, when its outline aligns with the groove 51 of the outer ball cage, the positioning ball head 33 is precisely embedded in the groove 51 under the downward pressure of the drive cylinder. At this time, the angle sensor of the rotating cylinder 32 triggers an electrical signal, immediately stops the rotation and starts the angle correction program. According to the preset angular positioning parameters, the positioning ball head 33 is driven to rotate until the groove 51 is completely consistent with the reference direction of the inspection or assembly process, thus completing the angular positioning. After positioning is completed, the piston rod of the drive cylinder 4 extends, causing the positioning plate 31 and the positioning ball head 33 to rise synchronously, and the positioning ball head 33 disengages from the groove 51; then, the gripping mechanism of the production line picks up the positioned outer ball cage 5 and transfers it to the subsequent inspection or assembly station, and the positioning device enters the next cycle.

[0017] This utility model has the following beneficial effects: 1. The device automatically completes the initial positioning, rotational alignment, precise insertion and reset of the outer ball cage through programmed actions of the drive cylinder and rotary cylinder, without the need for manual operation throughout the process; 2. The elastic buffer design of the buffer spring 222 stabilizes the contact pressure between the positioning ball head and the outer ball cage within a safe range, avoiding scratches on the flange surface of the outer ball cage or wear on the positioning ball head caused by rigid collisions, thereby reducing the scrap rate of workpieces and equipment maintenance costs.

[0018] As a further preferred embodiment, the upper end of the placement rack 21 is provided with a pneumatic gripper 23, which is disposed between the placement rack 21 and the positioning rack 22.

[0019] Specifically, when the positioning ball head 33 completes angular positioning and is about to leave the groove 51, the transmission rod 52 of the outer ball cage 5 at its gripper end clamps it to prevent the outer ball cage 5 from shifting angularly due to inertia or slight vibration at the moment the positioning ball head 33 leaves. At the same time, during the process of the gripping mechanism gripping the outer ball cage, the continuous clamping can resist the lateral torque brought by the gripping force, ensuring that the outer ball cage maintains its positioning reference unchanged before transfer. Meanwhile, for some cases where the outer ball cage groove 51 is shallow or has a smooth surface, the control system can preset that when the positioning ball head 33 contacts the outer ball cage and begins to rotate for alignment, the pneumatic gripper 23 clamps the transmission rod 52 with a pre-tightening force. At this time, the outer ball cage is fixed, preventing the positioning ball head from rotating synchronously due to friction, and ensuring that the positioning ball head can rotate independently to find the groove position.

[0020] As a further preferred embodiment, the upper end of the testing frame 1 is provided with a guide rail 11, and the side end of the positioning plate 31 is slidably disposed on the guide rail 11.

[0021] Specifically, when the drive cylinder 4 drives the positioning plate 31 to rise and fall, the rigid constraint of the guide rail 11 and the slider can limit the horizontal swing of the positioning plate, ensuring that the axis of the positioning ball head 33 is always coaxial with the central axis of the outer ball cage 5.

[0022] As a further preferred embodiment, a rotary cylinder 12 is provided at the lower end of the testing frame 1, and the side end of the positioning plate 31 is provided on the rotating end of the rotary cylinder 12.

[0023] Specifically, after positioning is completed, the rotary cylinder 12 can drive the placement mechanism 2 to rotate, moving the outer ball cage 5 from the inner working area of ​​the inspection frame 1 to the gripping station on the outer side of the frame, thus avoiding collision between the gripping mechanism and the frame when it extends to grip.

[0024] As a further preferred embodiment, a limiting plate 13 is provided on the side end of the detection frame 1, and the limiting plate 13 is disposed between the placement mechanism 2 and the positioning mechanism 3.

[0025] Specifically, when the drive cylinder 4 drives the positioning plate 31 to descend, the descent stroke of the positioning mechanism 3 is limited by the limiting plate 13 to prevent the positioning ball head 33 from rigidly colliding with the outer ball cage 5.

[0026] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An angular positioning device for an outer ball cage, characterized in that, include: The testing frame includes a placement mechanism, a positioning mechanism, and a drive cylinder. The placement mechanism includes a placement frame at the lower end of the testing frame and a positioning frame on the placement frame. A guide rod is provided at the lower end of the positioning frame, and the lower end of the guide rod is slidably disposed on the upper end of the placement frame and externally fitted with a buffer spring. The two ends of the buffer spring abut against the lower end of the positioning frame and the upper end of the placement frame, respectively. The positioning mechanism includes a positioning plate, a rotary cylinder at the lower end of the positioning plate, and a positioning ball head at the rotating end of the rotary cylinder. The piston rod end of the drive cylinder is fixedly connected to the positioning plate for driving the positioning plate to move up and down.

2. The angular positioning device for an outer ball cage according to claim 1, characterized in that, The upper end of the placement rack is provided with a pneumatic gripper, which is located between the placement rack and the positioning rack.

3. The outer ball cage angular positioning device according to claim 1, characterized in that, The upper end of the testing frame is provided with a guide rail, and the side end of the positioning plate is slidably mounted on the guide rail.

4. The outer ball cage angular positioning device according to claim 2, characterized in that, A rotary cylinder 2 is provided at the lower end of the testing frame, and the side end of the positioning plate is provided on the rotating end of the rotary cylinder 2.

5. The outer ball cage angular positioning device according to claim 1, characterized in that, A limiting plate is provided on the side of the testing frame, and the limiting plate is located between the placement mechanism and the positioning mechanism.

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