A piston ring runout detection machine

Abstract

The utility model relates to workpiece detection technical field especially is a piston ring runout detection machine, including work bench, install coaxial locking mechanism in work bench top and install in work bench bottom for driving coaxial locking mechanism rotation drive mechanism, the coaxial locking mechanism one side horizontal arrangement has install in work bench top's outer groove detection sensor, in the utility model, through setting up multiple detection sensors, after piston ring installation is finished, starting device, servo motor and planetary reducer work drive spring clamp cover rotation, each detection sensor can detect value, subtract the minimum value of the maximum value detected in the rotation of piston ring, the data obtained and the comparison of the set qualified range are compared to determine whether the piston ring is qualified, this design can simultaneously carry out runout detection to multiple positions on the piston ring, improve work efficiency, and avoid the problem that piston ring position adjusts multiple times and leads to high false detection rate.

Description

Technical Field

[0001] This utility model relates to the field of workpiece inspection technology, specifically a piston ring runout detection machine. Background Technology

[0002] Piston rings are core sealing and guiding components in automotive transmissions. They are typically installed in the annular grooves of the transmission's hydraulic pistons. Piston rings require high precision, and during the production process, a dial indicator is used to inspect the surface accuracy of the piston rings.

[0003] However, since the piston ring surface has multiple structures of different sizes, such as outer grooves, bosses, and inner grooves, the position of the piston ring and the dial indicator needs to be adjusted multiple times when using a dial indicator for testing, resulting in low work efficiency. At the same time, the multiple adjustments to the position of the piston ring can easily lead to a high false detection rate. Therefore, a piston ring runout testing machine is proposed to address the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a piston ring runout detection machine to solve the problems of low detection efficiency and high false detection rate of existing piston rings mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A piston ring runout testing machine includes a worktable, a coaxial locking mechanism mounted on the top of the worktable, and a drive mechanism mounted on the bottom of the worktable for driving the coaxial locking mechanism to rotate. An outer groove detection sensor mounted on the top of the worktable is horizontally arranged on one side of the coaxial locking mechanism. A vertically arranged planar detection sensor is arranged on one side of the outer groove detection sensor, with its detection probe pointing vertically downwards. A vertically arranged boss surface detection sensor is arranged on one side of the planar detection sensor, with its detection probe pointing vertically upwards. An outer diameter detection sensor is horizontally arranged on one side of the boss surface detection sensor, and an inner groove detection sensor is horizontally arranged on one side of the outer diameter detection sensor. A first drive assembly for driving the planar detection sensor to move horizontally is mounted on the outside of the planar detection sensor, and a second drive assembly for driving the inner groove detection sensor to move horizontally and vertically is mounted on the outside of the inner groove detection sensor. Multiple amplifiers are mounted on the top of the worktable and electrically connected to the outer groove detection sensor, planar detection sensor, boss surface detection sensor, outer diameter detection sensor, and inner groove detection sensor, respectively.

[0006] Preferably, the first drive assembly includes a first fixed frame mounted on the outside of the planar detection sensor, a first slider mounted on the bottom of the first fixed frame, a first slide rail slidably connected to the bottom of the first slider, and a first drive cylinder fixedly connected to the top of the worktable mounted on one side of the first slider.

[0007] Preferably, the second drive assembly includes a second fixed frame fixedly connected to the outside of the inner groove detection sensor, an elastic support mechanism installed at the bottom of the second fixed frame, a second slider installed at the bottom of the elastic support mechanism, a second slide rail slidably connected to the bottom of the second slider, a second drive cylinder fixedly connected to the top of the worktable installed on one side of the second slider, a pressing mechanism installed on the top of the worktable on one side of the second slide rail, and an inner diameter measuring probe installed on the inner groove detection sensor.

[0008] Preferably, the elastic support mechanism includes a fixed cylinder fixedly connected to the bottom of the second fixed frame, a support spring fixedly connected to the inner side of the fixed cylinder, a fixed shaft fixedly connected to the bottom of the support spring through the fixed cylinder and the second fixed frame and slidably connected thereto, and a limiting plate for limiting the position of the second fixed frame fixedly connected to the outer side of the fixed shaft.

[0009] Preferably, a wedge block is fixedly connected to one side of the second fixed frame, and the pressing mechanism includes a support frame fixedly connected to the top of the workbench, on which pulleys corresponding to the wedge block are installed.

[0010] Preferably, the coaxial locking mechanism is a spring clip.

[0011] Preferably, the drive mechanism is a servo motor equipped with a planetary gear reducer.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, by setting multiple detection sensors, the device is started after the piston ring is installed. The servo motor and planetary reducer work to drive the spring sleeve to rotate, and each detection sensor can detect the value. The maximum value detected by the piston ring is subtracted from the minimum value after one revolution of the piston ring. The data obtained is compared with the set qualified range to determine whether the piston ring is qualified. This design can simultaneously detect the runout of multiple positions on the piston ring, which improves work efficiency and avoids the problem of high false detection rate caused by multiple adjustments of the piston ring position. 2. In this utility model, by setting the first driving component and the second driving component, the plane detection sensor and the inner groove detection sensor can be displaced when the device is in use, so that the plane detection sensor and the inner groove detection sensor avoid the coaxial locking mechanism and prevent the plane detection sensor and the inner groove detection sensor from interfering with the installation of the piston ring. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a top view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the structure of the first drive component of this utility model; Figure 4 This is a schematic diagram of the structure of the second drive component of this utility model; Figure 5 This is a front view schematic diagram of the second drive component of this utility model; Figure 6 This is a schematic diagram of the elastic support mechanism of this utility model; Figure 7 This is a schematic diagram of the piston ring mounting structure of this utility model; Figure 8 This is a schematic diagram of the cross-sectional structure of the piston ring of this utility model; Figure 9 This is a schematic diagram of the workpiece clamping position structure of this utility model; Figure 10 This is a schematic diagram of the outer groove runout inspection of this utility model.

[0014] In the diagram: 1. Worktable; 2. Coaxial locking mechanism; 3. Drive mechanism; 4. Outer groove detection sensor; 5. Plane detection sensor; 51. First drive assembly; 511. First fixed frame; 512. First slider; 513. First slide rail; 514. First drive cylinder; 6. Boss surface detection sensor; 7. Outer diameter detection sensor; 8. Inner groove detection sensor; 81. Second drive assembly; 811. Second fixed frame; 8111. Wedge block; 812. Elastic support mechanism ; 8121, Fixed cylinder; 8122, Support spring; 8123, Fixed shaft; 8124, Limiting plate; 813, Second slider; 814, Second slide rail; 815, Second drive cylinder; 816, Pressing mechanism; 8161, Support frame; 8162, Pulley; 82, Inner diameter measuring probe; 9, Amplifier; a, Boss surface runout check; b, Outer diameter runout check; c, Plane runout check; d, Inner groove runout check; e, Workpiece clamping position; f, Outer groove runout check. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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. Unless otherwise stated, these directional terms 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 therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0017] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0018] Please see Figure 1-10 This utility model provides a technical solution: A piston ring runout testing machine includes a worktable 1, a coaxial locking mechanism 2 mounted on the top of the worktable 1, and a drive mechanism 3 mounted on the bottom of the worktable 1 for rotating the coaxial locking mechanism 2. An outer groove detection sensor 4 mounted on the top of the worktable 1 is horizontally arranged on one side of the coaxial locking mechanism 2. A vertically arranged plane detection sensor 5 is arranged on one side of the outer groove detection sensor 4, with its detection probe pointing vertically downwards. A vertically arranged boss surface detection sensor 6 is arranged on one side of the plane detection sensor 5, with its detection probe pointing vertically upwards. An outer diameter detection sensor 7 is horizontally arranged on one side of the boss surface detection sensor 6, and an inner groove detection sensor 8 is horizontally arranged on one side of the outer diameter detection sensor 7. A first [unclear - possibly a device] is mounted on the outside of the plane detection sensor 5 for driving the plane detection sensor 5 to move horizontally. The drive assembly 51 has a second drive assembly 81 installed on the outside of the inner groove detection sensor 8 for driving the inner groove detection sensor 8 to move horizontally and vertically. The top of the worktable 1 is equipped with multiple amplifiers 9 that are electrically connected to the outer groove detection sensor 4, the plane detection sensor 5, the boss surface detection sensor 6, the outer diameter detection sensor 7, and the inner groove detection sensor 8, respectively. After the piston ring is installed, the device is started. The servo motor and the planetary reducer work to drive the spring sleeve to rotate. Each detection sensor can then detect the value. The maximum value detected by the piston ring is subtracted from the minimum value after one revolution of the piston ring. The data obtained is compared with the set qualified range to determine whether the piston ring is qualified. This design can simultaneously detect the runout of multiple positions on the piston ring, which improves the work efficiency and avoids the problem of high false detection rate caused by multiple adjustments of the piston ring position.

[0019] The first drive assembly 51 includes a first fixed frame 511 mounted on the outside of the planar detection sensor 5. A first slider 512 is mounted on the bottom of the first fixed frame 511. A first slide rail 513 is slidably connected to the bottom of the first slider 512. A first drive cylinder 514 is mounted on one side of the first slider 512 and fixedly connected to the top of the worktable 1. The first drive assembly 51 can cause the planar detection sensor 5 to move, thus avoiding interference with the installation of the piston ring.

[0020] The second drive assembly 81 includes a second fixed frame 811 fixedly connected to the outside of the inner groove detection sensor 8. An elastic support mechanism 812 is installed at the bottom of the second fixed frame 811. A second slider 813 is installed at the bottom of the elastic support mechanism 812. A second slide rail 814 is slidably connected to the bottom of the second slider 813. A second drive cylinder 815 is fixedly connected to the top of the worktable 1 on one side of the second slider 813. A pressing mechanism 816 is installed on the top of the worktable 1 on one side of the second slide rail 814. An inner diameter measuring probe 82 is installed on the inner groove detection sensor 8. The second drive assembly 81 can cause the inner groove detection sensor 8 to move, avoiding interference with the installation of the piston ring.

[0021] The elastic support mechanism 812 includes a fixed cylinder 8121 fixedly connected to the bottom of the second fixed frame 811. A support spring 8122 is fixedly connected to the inner side of the fixed cylinder 8121. A fixed shaft 8123 is fixedly connected to the bottom of the support spring 8122, passing through the fixed cylinder 8121 and the second fixed frame 811 and slidably connected thereto. A limiting plate 8124 for limiting the position of the second fixed frame 811 is fixedly connected to the outer side of the fixed shaft 8123. A wedge block 8111 is fixedly connected to one side of the second fixed frame 811. The pressing mechanism 816 includes a support frame 8161 fixedly connected to the top of the worktable 1. A pulley 8162 corresponding to the wedge block 8111 is installed on the support frame 8161. The cooperation of the elastic support mechanism 812 and the pressing mechanism 816 enables the inner groove detection sensor 8 to move downward during horizontal movement, thereby aligning the detection probe of the inner groove detection sensor 8 with the inner groove of the piston ring.

[0022] The coaxial locking mechanism 2 is a spring clip, which can ensure that the piston ring is fixed in the axial position, reliably lock the piston ring, and is easy to operate.

[0023] The drive mechanism 3 is a servo motor equipped with a planetary reducer. This design allows the coaxial locking mechanism 2 to rotate at a uniform and stable speed, thereby making the piston ring runout detection more accurate.

[0024] Workflow: Before use, amplifier 9 needs to be connected to each detection sensor using cables. Connect the electrical appliance to the external controller and power it on. When detecting piston rings, first place the piston ring to be detected on the coaxial locking mechanism 2 at the top of the worktable 1, so that the spring clip clamps the workpiece clamping position e of the inner ring of the piston ring. At this time, the outer groove detection sensor 4, the boss surface detection sensor 6, and the outer diameter detection sensor 7 can be aligned with the piston ring. Then, the first drive assembly 51 and the second drive assembly 81 can be activated to displace the plane detection sensor 5 and the inner groove detection sensor 8. The specific working steps are as follows: The output shaft of the first drive cylinder 514 moves, causing the first fixed frame 511 to move, so that the first slider 512 slides outside the first slide rail 513 until the plane detection sensor 5 moves above the piston ring. The output shaft of the second drive cylinder 815 moves, driving the second fixed frame 811 to move, causing the second slider 813 to slide outside the second slide rail 814, and causing the inner groove detection sensor 8 to move above the piston ring. When the wedge block 8111 on the second fixed frame 811 contacts the pulley 8162 on the support frame 8161, the second fixed frame 811 will be forced to move downward. At this time, the fixed shaft 8123 will slide relative to the fixed cylinder 8121, and the support spring 8122 will be compressed. When the support frame 8161 and the pulley 8162 are located inside the second fixed frame 811, the top of the limiting plate 8124 will contact the bottom of the second fixed frame 811, thereby cooperating with the support frame 8161 to lock the second fixed frame 811. At this time, the inner diameter measuring probe 82 on the inner groove detection sensor 8 will be horizontally aligned with the inner groove of the piston ring. The design of the first drive assembly 51 and the second drive assembly 81 allows the plane detection sensor 5 and the inner groove detection sensor 8 to avoid the coaxial locking mechanism 2, preventing the plane detection sensor 5 and the inner groove detection sensor 8 from interfering with the installation of the piston ring. The cooperation of the elastic support mechanism 812 and the pressing mechanism 816 allows the inner groove detection sensor 8 to move downward during horizontal movement, so that the detection probe of the inner groove detection sensor 8 can be aligned with the inner groove of the piston ring. After the positions of all the detection sensors are adjusted, the controller can be started to extend the probes of multiple detection sensors and make contact with the workpiece. Each detection probe is aligned with the positions of piston ring boss surface runout check (a), outer diameter runout check (b), plane runout check (c), inner groove runout check (d), and outer groove runout check (f). Then, the drive mechanism 3 is started, which makes the servo motor and planetary reducer work to drive the spring sleeve to rotate. Each detection sensor can then detect values. The maximum value detected by the piston ring is subtracted from the minimum value after one revolution of the piston ring. The data obtained is compared with the set qualified range to determine whether the piston ring is qualified.

[0025] Multiple detection sensors convert physical quantities into weak electrical signals. Amplifier 9 processes the signals through amplification, filtering, and linearization to meet the recognition and processing requirements of the controller. Finally, the controller realizes closed-loop control of the entire system. Amplifier 9 and multiple detection sensors are all of the GT2-70 series.

[0026] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Standard parts used in this invention can all be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all use conventional models from the prior art, and the circuit connections also use conventional connection methods from the prior art, which will not be detailed here.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A piston ring runout testing machine, comprising a worktable (1), a coaxial locking mechanism (2) mounted on the top of the worktable (1), and a drive mechanism (3) mounted on the bottom of the worktable (1) for driving the coaxial locking mechanism (2) to rotate, characterized in that: The coaxial locking mechanism (2) has an outer groove detection sensor (4) installed on the top of the workbench (1) horizontally on one side. The outer groove detection sensor (4) has a vertically arranged plane detection sensor (5) on one side. The detection probe of the plane detection sensor (5) is vertically downward. The plane detection sensor (5) has a vertically arranged boss surface detection sensor (6) on one side. The detection probe of the boss surface detection sensor (6) is vertically upward. The boss surface detection sensor (6) has an outer diameter detection sensor (7) horizontally arranged on one side. The outer diameter detection sensor (7) has an inner groove detection sensor (8) horizontally arranged on one side. The planar detection sensor (5) is equipped with a first drive assembly (51) for driving the planar detection sensor (5) to move horizontally, and the inner groove detection sensor (8) is equipped with a second drive assembly (81) for driving the inner groove detection sensor (8) to move horizontally and vertically. The top of the workbench (1) is equipped with multiple amplifiers (9) that are electrically connected to the outer groove detection sensor (4), the plane detection sensor (5), the boss surface detection sensor (6), the outer diameter detection sensor (7), and the inner groove detection sensor (8).

2. The piston ring runout detection machine according to claim 1, characterized in that: The first drive assembly (51) includes a first fixed frame (511) mounted on the outside of the planar detection sensor (5), a first slider (512) mounted on the bottom of the first fixed frame (511), a first slide rail (513) slidably connected to the bottom of the first slider (512), and a first drive cylinder (514) fixedly connected to the top of the workbench (1) mounted on one side of the first slider (512).

3. The piston ring runout detection machine according to claim 1, characterized in that: The second drive assembly (81) includes a second fixed frame (811) fixedly connected to the outside of the inner groove detection sensor (8). An elastic support mechanism (812) is installed at the bottom of the second fixed frame (811). A second slider (813) is installed at the bottom of the elastic support mechanism (812). A second slide rail (814) is slidably connected to the bottom of the second slider (813). A second drive cylinder (815) fixedly connected to the top of the worktable (1) is installed on one side of the second slider (813). A pressing mechanism (816) installed on the top of the worktable (1) is provided on one side of the second slide rail (814). An inner diameter measuring probe (82) is installed on the inner groove detection sensor (8).

4. A piston ring runout testing machine according to claim 3, characterized in that: The elastic support mechanism (812) includes a fixed cylinder (8121) fixedly connected to the bottom of the second fixed frame (811), a support spring (8122) fixedly connected to the inner side of the fixed cylinder (8121), a fixed shaft (8123) that passes through the fixed cylinder (8121) and the second fixed frame (811) and is slidably connected to the bottom of the support spring (8122), and a limiting plate (8124) for limiting the position of the second fixed frame (811) fixedly connected to the outer side of the fixed shaft (8123).

5. A piston ring runout testing machine according to claim 4, characterized in that: The second fixed frame (811) has a wedge block (8111) fixedly connected to one side. The pressing mechanism (816) includes a support frame (8161) fixedly connected to the top of the workbench (1). The support frame (8161) is equipped with pulleys (8162) that correspond to the wedge block (8111).

6. A piston ring runout testing machine according to claim 1, characterized in that: The coaxial locking mechanism (2) is a spring clip.

7. A piston ring runout testing machine according to claim 1, characterized in that: The drive mechanism (3) is a servo motor equipped with a planetary reducer.

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