Milling detection tool for shock absorber upper seat

Abstract

The utility model discloses a shock absorber upper seat milling detection frock, including bearing seat, be equipped with with the positioning post of casing mouth diameter cooperation on bearing seat, the outer periphery of positioning post is equipped with the support ring convex for with casing inner ring plate outer top surface contact, the upper of bearing seat is equipped with elevating measuring mechanism, and elevating measuring mechanism includes elevating seat, be equipped with the pressure head of pressure hold casing outer ring plate and be equipped with the elastic distance sensor of abutting inner ring plate inner top surface on elevating seat. The utility model discloses can replace traditional manual measurement mode, improve measuring efficiency and accuracy, reduce artificial operation error, and then guarantee the consistency of product quality.

Description

Technical Field

[0001] This utility model relates to the field of shock absorber processing technology, specifically to a milling and inspection fixture for the upper seat of a shock absorber. Background Technology

[0002] The shock absorber is a core component of a vehicle's suspension system. Its primary function is to dampen vibrations and impacts transmitted from uneven road surfaces to the vehicle body, ensuring smooth driving and ride comfort. The upper housing of the shock absorber (such as...) Figure 5 As shown, this component is an important part of the structure, and its basic structure includes a cylindrical body. The inside of the cylindrical body is an inner ring plate with a central through-hole, and the outside of the cylindrical body is an outer ring plate. The outer ring plate typically has three lugs arranged in a circumferential array, and each lug has bolt holes.

[0003] During the manufacturing process of the shock absorber upper housing, the inner top surface of the inner ring plate needs to be milled. This is to ensure the flatness and design dimensions of this load-bearing plane, providing a precise reference for subsequent assembly. After milling, the actual distance between the inner and outer top surfaces of the inner ring plate needs to be measured, i.e., wall thickness testing is performed to confirm whether the milling depth is qualified and whether the remaining wall thickness of the inner ring plate meets the structural strength requirements. However, in current testing, this wall thickness testing generally relies on manual measurement and judgment by operators. This process is cumbersome, inefficient, and the measurement methods vary from person to person, making process control unstable. Furthermore, human error in readings is unavoidable, ultimately leading to insufficient accuracy and reliability of the test results, affecting the consistency of product quality. Utility Model Content

[0004] Purpose of the utility model: To provide a milling and inspection fixture for the upper seat of a shock absorber, which can replace the traditional manual measurement method, improve measurement efficiency and accuracy, reduce human error, and thus ensure the consistency of product quality.

[0005] Technical solution: A milling and testing fixture for a shock absorber upper seat includes a bearing seat, on which a positioning post is provided that matches the diameter of the housing opening. The outer periphery of the positioning post is provided with a supporting ring protrusion for contacting the outer top surface of the inner ring plate of the housing. A lifting and measuring mechanism is provided above the bearing seat. The lifting and measuring mechanism includes a lifting seat, on which a pressure head for pressing the outer ring plate of the housing and an elastic distance sensor for abutting the inner top surface of the inner ring plate are provided.

[0006] A further improvement of this utility model is that at least two pressure heads are vertically arranged on the lifting seat via a first connecting member, and at least two elastic distance sensors are vertically arranged on the lifting seat via a second connecting member.

[0007] A further improvement of this utility model is that the support seat is also provided with an ear plate adjustment mechanism. The ear plate adjustment mechanism includes a rotary drive component that drives the positioning column to rotate. A positioning adjustment rod is provided on one side of the support seat. The positioning adjustment rod includes a stop that can extend and retract along the length direction of the support seat. After the stop extends into place, it is located on the rotation path of the ear plate of the housing and can abut against one side of one of the ear plates to limit the circumferential position of the housing.

[0008] A further improvement of this utility model is that the rotary drive component is a rotary motor, which is located below the top plate of the support base. The top plate has a through-hole for the positioning post to pass through, and the positioning post passes through the through-hole and is coaxially fixedly connected to the output shaft of the rotary motor.

[0009] A further improvement of this utility model is that an avoidance mechanism is provided on one side of the bearing seat. The avoidance mechanism includes a support seat, and an avoidance slide is slidably connected to the upper end surface of the support seat along the length direction of the bearing seat. One end of the avoidance slide is provided with a sliding drive member to drive it to slide. The lifting and measuring mechanism is fixedly installed on the avoidance slide.

[0010] A further improvement of this utility model is that the support base is provided with a workpiece detection sensor, which is located next to the positioning column and is used to detect whether a shell workpiece is placed on the support base.

[0011] A further improvement of this utility model is that the top plate of the support seat is provided with an ear plate detection sensor, which is vertically upward and the detection end is located below the rotation path of the ear plate of the housing, for detecting whether an ear plate passes over it. The ear plate detection sensor is signal connected to the positioning adjustment rod.

[0012] A further improvement of this utility model is that the first connector is provided with a through-hole to facilitate the passage of the elastic distance sensor.

[0013] A further improvement of this utility model is that both the first connecting member and the second connecting member are connecting plates, and a support block is provided between the two connecting plates. Beneficial effects

[0014] This utility model, by setting a bearing seat, positioning column and supporting ring protrusion, can accurately position the shell workpiece and ensure consistent measurement benchmark. The lifting measurement mechanism uses a pressure head to hold the outer ring plate and an elastic distance sensor to abut the inner top surface of the inner ring plate, realizing automatic measurement of the wall thickness of the inner ring plate after milling. It effectively replaces the traditional manual measurement method, improves measurement efficiency and accuracy, reduces human operation error, and ensures the consistency of product quality.

[0015] This invention enables the housing to rotate via an ear plate adjustment mechanism and restricts the circumferential position of the ear plates via a stop, thus achieving rapid angle adjustment of the housing. It can adapt to different ear plate positions, reduce the angle requirements for the placement of the housing workpiece, reduce manual adjustment time, and provide a stable and accurate angular reference for subsequent processing or inspection procedures.

[0016] This invention, by setting up an obstacle avoidance mechanism, allows the lifting measuring mechanism to slide along the length of the support seat. During non-measuring phases, the measuring mechanism can be moved horizontally away, providing an unobstructed operating space for the operator or automated robot, avoiding mechanism interference, improving operational safety and tooling adaptability, and making it suitable for continuous production environments. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 This is a three-dimensional schematic diagram of the lifting and measuring mechanism of this utility model.

[0019] Figure 3 This is a three-dimensional schematic diagram of the positioning column structure of this utility model.

[0020] Figure 4 This is a partially enlarged schematic diagram of the ear plate adjustment mechanism of this utility model.

[0021] Figure 5 This is a schematic diagram of the upper housing structure of a shock absorber in the prior art.

[0022] In the figure, 1-bearing seat, 2-positioning column, 3-supporting ring protrusion, 4-lifting seat, 5-pressure head, 6-elastic distance sensor, 7-first connecting piece, 8-second connecting piece, 9-rotation drive component, 10-positioning adjustment rod, 11-butt, 12-support seat, 13-avoidance slide, 14-sliding drive component, 15-workpiece detection sensor, 16-ear plate detection sensor, 17-support block, 18-cylinder, 19-inner ring plate, 20-outer ring plate, 21-ear plate, 22-inner top surface of inner ring plate, 23-outer top surface of inner ring plate, 24-bolt hole. Detailed Implementation

[0023] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1: Combination Figures 1-5It is known that a milling and testing fixture for a shock absorber upper seat includes a bearing seat 1. The bearing seat 1 is provided with a positioning post 2 that matches the diameter of the housing opening. The outer periphery of the positioning post 2 is provided with a supporting ring protrusion 3 for contacting the outer top surface of the inner ring plate of the housing. A lifting and measuring mechanism is provided above the bearing seat 1. The lifting and measuring mechanism includes a lifting seat 4. The lifting seat 4 is provided with a pressure head 5 for pressing the outer ring plate of the housing and an elastic distance sensor 6 for abutting the inner top surface of the inner ring plate.

[0025] The lifting seat 4 can be raised and lowered using conventional lifting structures in existing technology, such as a cylinder. The telescopic end of the cylinder points vertically upward, and a vertical linear guide rail is provided on the side of the cylinder. The lifting seat 4 is slidably connected to the linear guide rail via a slider, and the upper end of the lifting seat 4 is fixedly connected to the telescopic end of the cylinder via a connecting plate. The lifting seat 4 is driven to rise and fall along the linear guide rail by the cylinder, ensuring motion stability.

[0026] At least two pressure heads 5 are vertically arranged on the lifting seat 4 via the first connecting member 7, and at least two elastic distance sensors 6 are vertically arranged on the lifting seat 4 via the second connecting member 8.

[0027] The lower end of the probe of the elastic distance sensor 6 is lower than the lower end of the pressure head 5, ensuring that the probe of the elastic distance sensor 6 preferentially contacts the inner top surface of the inner ring plate and triggers elastic compression during measurement. Preferably, its initial height is 5-8 mm lower than the lower end of the pressure head 5. The elastic distance sensor 6 is preferably a contact displacement sensor or LVDT, with a built-in spring providing contact force. When the probe abuts against the inner top surface of the inner ring plate, its internal elastic element compresses and generates an electrical signal related to displacement, outputting the height value of the inner top surface of the inner ring plate relative to the sensor mounting reference surface. By comparing this height value with the known height value of the upper surface of the supporting ring protrusion 3 (i.e., the positioning reference surface), the wall thickness of the inner ring plate at the measurement point can be calculated.

[0028] Preferably, there are two pressure heads 5 arranged symmetrically, and three elastic distance sensors 6, with the probes of the three elastic distance sensors 6 distributed circumferentially. Multiple pressure heads 5 uniformly press the outer ring plate, and multiple elastic distance sensors 6 simultaneously measure different positions of the inner ring plate, ensuring the comprehensiveness and reliability of the wall thickness data and effectively detecting flatness deviations.

[0029] Both the first connector 7 and the second connector 8 are connecting plates, with a support block 17 between the two connecting plates. The first connector 7 has a through-hole for the elastic distance sensor 6 to pass through.

[0030] The diameter of the positioning post 11 is adapted to the diameter of the opening in the housing, and is used to position the housing. Preferably, the top of the positioning post 11 is tapered, which facilitates the placement of the housing.

[0031] Example 2: This example has a structure that is largely the same as that of Example 1, except that: The support 1 is also provided with an ear plate adjustment mechanism. The ear plate adjustment mechanism includes a rotary drive 9 that drives the positioning column 2 to rotate. A positioning adjustment rod 10 is provided on one side of the support 1. The positioning adjustment rod 10 (such as an electric push rod or a drive cylinder) includes a butt 11 that can extend and retract along the length of the support 1. After the butt 11 extends into place, it is located on the rotation path of the ear plate of the housing and can abut against one side of one of the ear plates to limit the circumferential position of the housing.

[0032] The rotary drive component 9 is a rotary motor, which is located below the top plate of the support base 1. The top plate has a through hole for the positioning pin 2 to pass through. The positioning pin 2 passes through the through hole and is coaxially fixedly connected to the output shaft of the rotary motor.

[0033] The support 1 is equipped with a workpiece detection sensor 15 (such as a photoelectric sensor or proximity switch). The workpiece detection sensor 15 is located next to the positioning column 2 and is used to detect whether a housing workpiece is placed on the support 1. The output signal of the workpiece detection sensor 15 is connected to the control unit of the tooling (such as a PLC) to automatically identify whether there is a housing on the support and prevent the detection action from being triggered accidentally under no-load conditions.

[0034] The control unit described in this solution is implemented using a conventional industrial controller found in existing technologies. Its hardware selection, signal input / output interface configuration, and basic control logic (such as triggering actuator actions after receiving sensor signals) are all well-known technologies in the field. The implementation of the control unit's functions does not involve any original program or hardware improvements. For conventional technical details such as the internal circuit structure and programming methods of the control unit, those skilled in the art can directly adopt standard solutions according to actual needs; therefore, these details will not be elaborated upon in this specification.

[0035] The top plate of the support 1 is equipped with an ear plate detection sensor 16 (such as a photoelectric sensor or proximity switch). Its detection direction is vertically upward and the detection end is located below the rotation path of the ear plate of the housing. It is used to detect whether an ear plate passes over it. The ear plate detection sensor 16 is signal-connected to the positioning adjustment rod 10. When an ear plate is detected passing over it, the positioning adjustment rod is triggered to extend the abutment 11 to a predetermined position. The corresponding ear plate then continues to rotate to the position where it contacts the abutment 11 of the positioning adjustment rod 10. This ensures that the abutment 11 will not accidentally hit the ear plate prematurely during the extension process, ensuring that the housing is accurately stopped at the preset detection angle and reducing manual intervention.

[0036] The output signal of the ear plate detection sensor 16 is connected to the control unit of the tooling. The extension and retraction of the positioning adjustment rod 10 is controlled by the control unit. When the control unit receives the signal from the ear plate detection sensor 16 indicating that the ear plate has passed, it controls the positioning adjustment rod 10 to drive the stop 11 to extend.

[0037] Compared to Embodiment 1, this embodiment achieves rapid angle adjustment of the housing by driving the housing to rotate through the ear plate adjustment mechanism and restricting the circumferential position of the ear plate by the abutment. It can adapt to different ear plate positions, reduce the angle requirements for the placement of the housing workpiece, reduce manual adjustment time, and provide a stable and accurate angular reference for subsequent processing or inspection procedures.

[0038] The other structures are the same as in Example 1, and will not be described in detail here.

[0039] Example 3: This example has a structure that is largely the same as that of Example 2, except that: A clearance mechanism is provided on one side of the bearing seat 1. The clearance mechanism includes a support seat 12. A clearance slide 13 is slidably connected to the upper end surface of the support seat 12 along the length direction of the bearing seat 1. A sliding drive 14 is provided at one end of the clearance slide 13 to drive it to slide. The lifting and measuring mechanism is fixedly installed on the clearance slide 13.

[0040] Preferably, the support base 12 is provided with a linear guide rail, the clearance slide 13 is slidably connected to the linear guide rail through a slider, the sliding drive component 14 is a cylinder, the cylinder body is fixedly mounted on the support base 12, and the piston rod of the cylinder is connected to the clearance slide 13.

[0041] Compared to Embodiment 2, this embodiment incorporates an obstacle avoidance mechanism, allowing the lifting measuring mechanism to slide along the length of the support seat. During non-measuring phases, the measuring mechanism can be moved horizontally, providing unobstructed operating space for operators or automated robotic arms, avoiding mechanism interference, improving operational safety and tooling adaptability, and making it suitable for continuous production environments.

[0042] The other structures are the same as in Example 2, and will not be described in detail here.

[0043] The working principle of the milling and inspection fixture for the upper seat of the shock absorber provided by this utility model is as follows: First, the upper housing of the shock absorber is placed on the bearing seat 1. The positioning pin 2 is inserted into the central opening of the housing, and the outer top surface of the inner ring plate is supported by the supporting ring protrusion 3 for positioning. Then, the lifting measuring mechanism descends, and the pressure head 5 presses against the outer ring plate of the housing to fix the workpiece. Simultaneously, the elastic distance sensor 6 abuts against the inner top surface of the inner ring plate and measures its height using the supporting ring protrusion 3 as a reference. Finally, the wall thickness of the inner ring plate is calculated based on the measurement data from the elastic distance sensor, achieving an automated and high-precision detection process.

[0044] When it is necessary to provide a uniform and accurate workpiece orientation for subsequent processes and avoid processing or inspection difficulties caused by angular deviations, the rotating drive component 9 of the ear plate adjustment mechanism drives the housing to rotate. After the ear plate detection sensor 16 detects the signal of the ear plate passing by, the drive cylinder of the positioning adjustment rod 10 is activated, causing the abutment 11 to extend to a fixed position. The ear plate rotates to the position where it contacts the abutment 11 of the positioning adjustment rod 10, thereby fixing the circumferential position and automatically completing the rapid correction of the workpiece angle, reducing the requirements for the initial placement angle of the workpiece.

[0045] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

[0046] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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. Any equivalent structural or process transformations made using the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

Claims

1. A milling and inspection fixture for a shock absorber upper seat, characterized in that: The device includes a support base (1), on which a positioning post (2) is provided that matches the diameter of the opening of the housing. The outer periphery of the positioning post (2) is provided with a supporting ring protrusion (3) for contacting the outer top surface of the inner ring plate of the housing. A lifting measuring mechanism is provided above the support base (1). The lifting measuring mechanism includes a lifting seat (4), on which a pressure head (5) for pressing the outer ring plate of the housing and an elastic distance sensor (6) for abutting the inner top surface of the inner ring plate are provided.

2. The milling and inspection fixture for a shock absorber upper seat according to claim 1, characterized in that: At least two pressure heads (5) are vertically arranged on the lifting seat (4) via a first connector (7), and at least two elastic distance sensors (6) are vertically arranged on the lifting seat (4) via a second connector (8).

3. The milling and inspection fixture for a shock absorber upper seat according to claim 2, characterized in that: The bearing seat (1) is also provided with an ear plate adjustment mechanism. The ear plate adjustment mechanism includes a rotary drive (9) that drives the positioning column (2) to rotate. The bearing seat (1) is provided with a positioning adjustment rod (10) on one side. The positioning adjustment rod (10) includes a butt (11) that can extend and retract along the length direction of the bearing seat (1). After the butt (11) extends into place, it is located on the rotation path of the ear plate of the housing and can abut against one side of one of the ear plates to limit the circumferential position of the housing.

4. The milling and inspection fixture for a shock absorber upper seat according to claim 3, characterized in that: The rotary drive component (9) is a rotary motor, which is located below the top plate of the support base (1). The top plate has a through hole for the positioning column (2) to pass through. The positioning column (2) passes through the through hole and is coaxially fixedly connected to the output shaft of the rotary motor.

5. A milling and inspection fixture for a shock absorber upper seat according to claim 1 or 3, characterized in that: The bearing seat (1) is provided with an avoidance mechanism on one side. The avoidance mechanism includes a support seat (12). The upper end of the support seat (12) is slidably connected to an avoidance slide (13) along the length direction of the bearing seat (1). One end of the avoidance slide (13) is provided with a sliding drive (14) to drive it to slide. The lifting and measuring mechanism is fixedly installed on the avoidance slide (13).

6. The milling and inspection fixture for a shock absorber upper seat according to claim 1, characterized in that: The support base (1) is provided with a workpiece detection sensor (15), which is located on the side of the positioning column (2) and is used to detect whether a shell workpiece is placed on the support base (1).

7. The milling and inspection fixture for a shock absorber upper seat according to claim 3, characterized in that: The top plate of the support (1) is provided with an ear plate detection sensor (16), which is vertically upward and the detection end is located below the rotation path of the ear plate of the housing. It is used to detect whether an ear plate passes above it. The ear plate detection sensor (16) is connected to the positioning adjustment rod (10) by signal.

8. The milling and inspection fixture for a shock absorber upper seat according to claim 2, characterized in that: The first connector (7) is provided with a through-hole to facilitate the passage of the elastic distance sensor (6).

9. A milling and inspection fixture for a shock absorber upper seat according to claim 8, characterized in that: The first connector (7) and the second connector (8) are both connecting plates, and a support block (17) is provided between the two connecting plates.

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