Dimension detection device for piston fittings

Abstract

The utility model belongs to the technical field of size detection, and particularly discloses a size detection device for piston fittings, which comprises a base, and a size detection assembly is arranged above the base. The size detection assembly comprises a connecting column, the top of the base is fixedly connected with a connecting rod, the top end of the connecting rod is fixedly connected with a connecting plate, the connecting column is slidably connected with the connecting plate, the bottom of the connecting column is fixedly connected with two fixing plates, and the bottom ends of the two fixing plates are fixedly connected with pressing blocks; according to the utility model, through the arrangement of the size detection assembly, the traditional manual measurement mode of manually holding a caliper with a hand is converted into mechanically-driven automatic pressing detection, the displacement of the pressing block is accurately controlled through a mechanical transmission system, the detection precision is improved, and the detection precision is improved. The risks of reading deviation and measurement inconsistency caused by subjective factors such as visual fatigue and force difference during manual operation are effectively reduced, and the effect of reducing the influence of manual errors on a detection result is achieved.

Description

Technical Field

[0001] This application relates to the field of dimensional inspection technology, and more specifically, to a dimensional inspection device for piston parts. Background Technology

[0002] As a key component of piston parts, the dimensional accuracy of piston rings plays a decisive role in engine performance. The thickness of the piston ring directly affects the sealing effect and friction performance; uneven thickness or excessive deviation can easily lead to oil leakage and power loss. If the outer diameter does not meet the standards, it will cause improper fit with the cylinder wall, resulting in air leakage and accelerated wear. Therefore, thickness and outer diameter measurement are essential steps to ensure the normal operation of piston rings and improve engine reliability and efficiency.

[0003] Currently, the inspection of piston ring thickness and outer diameter largely relies on manual operation of tools such as calipers and micrometers. Manual inspection has significant drawbacks: prolonged work can lead to visual fatigue in inspectors, resulting in reading inaccuracies; different operators use varying techniques and pressure, causing inconsistencies in measurement results; and manual inspection is inefficient, failing to meet the inspection needs of large-scale piston ring production. This not only delays production schedules but also increases labor costs and hinders efficient quality control. Utility Model Content

[0004] To address the aforementioned problems, this application provides a dimensional inspection device for piston components.

[0005] The present application provides a dimensional inspection device for piston parts, which adopts the following technical solution:

[0006] A size detection device for piston parts includes a base, and a size detection component is provided on top of the base;

[0007] The dimension inspection component includes a connecting column, a connecting rod fixedly connected to the top of the base, a connecting plate fixedly connected to the top of the connecting rod, a slidable connection between the connecting column and the connecting plate, two fixing plates fixedly connected to the bottom of the connecting column, and clamping blocks fixedly connected to the bottom ends of the two fixing plates.

[0008] A length measuring instrument is installed above the connecting plate, and the length measuring instrument is located on one side of the connecting column.

[0009] Through the above technical solution, the size detection component transforms the traditional manual measurement method of handheld calipers into a mechanically driven automatic clamping detection. By precisely controlling the displacement of the clamping block through the mechanical transmission system, it effectively reduces the risk of reading deviations and measurement inconsistencies caused by subjective factors such as visual fatigue and force differences during manual operation, and reduces the impact of human error on the detection results.

[0010] Furthermore, an L-plate is fixedly connected to the bottom of the connecting plate, and a motor is located above the L-plate.

[0011] Furthermore, a lead screw is fixedly connected to the output end of the motor, one end of the connecting rod is fixedly connected to a plate, and the end of the lead screw away from the motor is rotatably connected to the plate.

[0012] Furthermore, the outer wall of the lead screw is threaded with a slider, one end of which is fixedly connected to a limiting plate, and a limiting groove is opened inside the connecting rod, with the limiting plate and the limiting groove being slidably connected.

[0013] Furthermore, a drive plate is fixedly connected to the end of the slider away from the limiting plate, and one end of the drive plate is fixedly connected to the connecting column.

[0014] Furthermore, multiple placement plates are provided above the base, and each placement plate has an electric push rod inside. Two of the electric push rods are fixedly connected to an arc-shaped plate at opposite ends.

[0015] Furthermore, each of the other two electric push rods has a long plate fixedly connected to one end facing the other, and both long plates are higher than the curved plate.

[0016] Through the above technical solution, the design of multiple electric push rods in the placement plates are respectively connected to the arc plate and the long plate, which can be adapted to both horizontal and vertical positions of the piston ring, achieving the effect of one device being compatible with multi-parameter detection and improving equipment utilization.

[0017] Furthermore, a control panel is fixedly connected to the end of the connecting plate away from the length measuring instrument. The control panel is electrically connected to the length measuring instrument, multiple electric push rods, and motors.

[0018] Through the above technical solution, the electrical connection between the control panel and the length measuring instrument, electric push rod, and motor enables preset detection parameters, component linkage control, and automatic qualification judgment, thereby automating the detection process and improving quality inspection efficiency.

[0019] Furthermore, the clamping block has a cavity inside, and a rod is fixedly connected inside the cavity. A multi-stage telescopic rod is provided on one side of the rod, and an L-shaped plate is fixedly connected to the bottom of the multi-stage telescopic rod. A round block is slidably connected to the outside of the rod.

[0020] Furthermore, two rotating rods are rotatably connected to the outer end of the circular block, and rollers are rotatably connected to the outer ends of the two rotating rods. A sensing pad is fitted on the outer wall of the roller, and the sensing pad is electrically connected to the controller.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] (1) By setting up the size detection component, this utility model transforms the traditional manual measurement method of handheld calipers into mechanically driven automatic clamping detection. Through the precise control of the displacement of the clamping block by the mechanical transmission system, it effectively reduces the risk of reading deviation and measurement inconsistency caused by subjective factors such as visual fatigue and force difference during manual operation, and reduces the impact of human error on the detection results.

[0023] (2) This utility model is designed to connect the arc plate and the long plate with electric push rods in multiple placement plates respectively, which can be adapted to the two postures of piston rings being placed flat and vertically, achieving the effect of one device being compatible with multiple parameter detection and improving equipment utilization.

[0024] (3) This utility model realizes the preset detection parameters, component linkage control and automatic qualification judgment by connecting the control panel with the length detector, electric push rod and motor, thereby achieving the automation of the detection process and improving the quality inspection efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a side view of the present invention;

[0027] Figure 3 This is a diagram showing the piston ring thickness measurement of this utility model;

[0028] Figure 4 This is a plan view of the present invention;

[0029] Figure 5 This is a partial view of the present invention;

[0030] Figure 6 This is a schematic diagram of the internal structure of the clamping block of this utility model.

[0031] Explanation of reference numerals in the attached drawings: 1. Base; 2. Connecting rod; 3. Length measuring instrument; 4. Connecting plate; 5. Lead screw; 6. Connecting column; 7. Fixing plate; 8. Pressing block; 9. Placement plate; 10. Electric push rod; 11. Arc plate; 12. Limiting plate; 13. Limiting groove; 14. Slider; 15. Plate body; 16. Drive plate; 17. Motor; 18. Control panel; 19. Long plate; 20. Round block; 21. Rotating rod; 22. Roller; 23. Rod body; 24. Multi-stage telescopic rod; 25. L-shaped plate. Detailed Implementation

[0032] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] Reference Figures 1-6 A size detection device for piston parts includes a base 1, and a size detection component is provided above the base 1;

[0034] The dimension detection assembly includes a connecting column 6, a connecting rod 2 fixedly connected to the top of the base 1, a connecting plate 4 fixedly connected to the top of the connecting rod 2, a slidable connection between the connecting column 6 and the connecting plate 4, and two fixing plates 7 fixedly connected to the bottom of the connecting column 6, with clamping blocks 8 fixedly connected to the bottom ends of the two fixing plates 7.

[0035] A length measuring instrument 3 is provided above the connecting plate 4, and the length measuring instrument 3 is located on one side of the connecting column 6.

[0036] Reference Figures 4-5 An L-plate is fixedly connected to the bottom of the connecting plate 4. A motor 17 is located above the L-plate. A lead screw 5 is fixedly connected to the output end of the motor 17. A plate body 15 is fixedly connected to one end of the connecting rod 2. The end of the lead screw 5 away from the motor 17 is rotatably connected to the plate body 15. A slider 14 is threadedly connected to the outer wall of the lead screw 5. A limit plate 12 is fixedly connected to one end of the slider 14. A limit groove 13 is opened inside the connecting rod 2. The limit plate 12 is slidably connected to the limit groove 13. A drive plate 16 is fixedly connected to the end of the slider 14 away from the limit plate 12. One end of the drive plate 16 is fixedly connected to the connecting column 6.

[0037] When inspecting the piston ring dimensions, the piston component to be inspected is first placed on the base 1. Initially, the clamping block 8 is not in contact with the base 1. Then, the motor 17 is started, and the output end of the motor 17 drives the lead screw 5 to rotate. Since the lead screw 5 and the slider 14 are threadedly connected, and the limiting plate 12 slides within the limiting groove 13, the slider 14 can only move along the axial direction of the lead screw 5. When the lead screw 5 rotates clockwise, the slider 14 moves along the lead screw 5 towards the piston component. The slider 14 drives the connecting post 6 to slide downward on the connecting plate 4 via the drive plate 16. The bottom of the connecting post 6 is connected to the clamping block 8 via the fixing plate 7, so when the connecting post 6 slides downward, the clamping block 8 also moves downward until it presses against the piston component placed on the base 1. After the clamping block 8 presses against the piston ring, the length measuring instrument 3, located above the connecting plate 4 and on one side of the connecting post 6, starts working to detect the thickness of the piston ring. By detecting the length of the connecting post 6 extending out of the connecting plate 4 using the length measuring instrument 3, the purpose of detecting the piston ring thickness can be achieved.

[0038] After the test is completed, the control motor 17 reverses, the lead screw 5 rotates in the opposite direction, and the slider 14 moves along the lead screw 5 away from the piston fitting, thereby driving the connecting column 6 and the clamping block 8 to rise and reset, so as to carry out the next test operation.

[0039] Without any workpieces placed on it, the top of the connecting column 6 is flush with the connecting plate 4, so the displacement change of the connecting column 6 can be used to directly calculate the piston ring thickness.

[0040] The length measuring instrument 3 is existing technology and will not be described in detail here.

[0041] Reference Figures 1-4 The base 1 has multiple placement plates 9 on top, and each of the multiple placement plates 9 has an electric push rod 10 inside. Two of the electric push rods 10 are fixedly connected to an arc plate 11 at one end facing each other, and two other electric push rods 10 are fixedly connected to a long plate 19 at one end facing each other. Both long plates 19 are higher than the arc plate 11.

[0042] The control panel 18 has buttons for controlling two sets of electric push rods 10. To test the thickness of the piston ring, first place the piston ring flat in the testing area between the two arc plates 11. Then, start the corresponding electric push rod 10 through the control panel 18. The electric push rod 10 pushes the arc plates 11 to move towards each other. The arc surface of the arc plate 11 fits against the outer circle of the piston ring, clamping and fixing the flat piston ring to ensure that it remains horizontal and stable during the testing process.

[0043] To test the outer diameter of the piston ring, place the piston ring vertically between two long plates 19, the height of which can be adapted to the height of the piston ring when it is placed vertically. Activate another set of electric push rods 10 via the control panel 18 to push the long plates 19 to move towards each other. The sides of the piston ring are clamped by the plane of the long plates 19, thus vertically fixing the piston ring and preventing it from tilting or shaking.

[0044] After fixing, the dimension detection components (connecting column 6, clamping block 8, length detector 3, etc.) are activated to automatically detect the thickness, outer diameter, and other dimensions of the piston ring. After the detection is completed, the electric push rod 10 moves in the reverse direction to release the arc plate 11 or the long plate 19, allowing the piston ring to be removed.

[0045] Different sizes of piston rings will be matched with different models of size inspection devices to adapt to the different levels of inspection requirements. One size inspection device is only suitable for piston rings of the same specification. The size inspection device will measure and judge the thickness and outer diameter of the piston ring to ensure that its dimensional accuracy meets the design standards and usage requirements. After each piston ring is inspected, the results are presented in real time through the control panel 18 in the form of visual data, signal indicator lights, and graphical interface to facilitate subsequent processing.

[0046] Reference Figures 1-5 A control panel 18 is fixedly connected to the end of the connecting plate 4 away from the length measuring instrument 3. The control panel 18 is electrically connected to the length measuring instrument 3, multiple electric push rods 10 and motor 17.

[0047] The operator first presets the standard parameters and tolerance range for piston ring testing on the control panel 18. After selecting the testing mode, the panel sends a command to the motor 17 to drive the lead screw 5 to rotate, which in turn drives the connecting column 6 and the clamping block 8 to descend and clamp the piston ring. At the same time, the electric push rod 10 drives the arc plate 11 to complete the clamping and positioning. After the workpiece is fixed, the thickness, outer diameter and other dimensions are measured in real time by the length measuring instrument 3, and the data is transmitted to the control panel 18 for comparison with the preset standard to quickly determine the pass rate.

[0048] Reference Figure 6 The clamping block 8 has a cavity inside, and a rod 23 is fixedly connected inside the cavity. A multi-stage telescopic rod 24 is provided on one side of the rod 23. An L-shaped plate 25 is fixedly connected to the bottom of the multi-stage telescopic rod 24. A round block 20 is slidably connected to the outside of the rod 23. Two rotating rods 21 are rotatably connected to the outer end of the round block 20. Rollers 22 are rotatably connected to the outer ends of the two rotating rods 21. A sensing pad is sleeved on the outer wall of the roller 22. The sensing pad is electrically connected to the controller.

[0049] When the clamping block 8 descends to measure the thickness, the multi-stage telescopic rod 24 drives the L-shaped plate 25 to descend. The descent of the L-shaped plate 25 drives the rotating rods 21 and rollers 22 on both sides to descend. When the rollers 22 contact the base 1, they roll outwards. When the rollers 22 contact the inner diameter of the piston ring, the sensing pad converts the pressure change into an electrical signal. The signal strength is positively correlated with the pressure magnitude. After receiving the electrical signal, the controller converts the signal strength into a displacement according to the built-in algorithm, thus determining the inner diameter of the piston ring.

[0050] When the piston rings are being tested for thickness, roller 22 rises and returns to its original position, which does not affect the thickness measurement.

[0051] The clamping block 8 is suitable for piston rings of the same specification. The clamping block 8 can also be made in different sizes and equipped with different size detection devices to adapt to piston rings of different sizes.

[0052] Working Principle: First, the operator places the piston ring flat between two arc-shaped plates 11 or vertically between two long plates 19 according to the testing requirements (such as thickness or outer diameter). The operator then selects the corresponding testing mode and inputs the standard parameters and tolerance range via the control panel 18. Next, pressing the start button sends a command to the motor 17, which drives the lead screw 5 to rotate. Since the lead screw 5 is threadedly connected to the slider 14 and the limiting plate 12 slides within the limiting groove 13, the slider 14 moves axially along the lead screw 5. This movement, via the drive plate 16, causes the connecting post 6 to slide downwards on the connecting plate 4. The clamping block 8 at the bottom of the connecting post 6 descends accordingly, until the piston ring is clamped. Simultaneously, the control panel 18 controls the corresponding electric push rod 10. If the thickness is being tested, the electric push rod 10 pushes the arc-shaped plates 11 to move towards each other, clamping the piston ring horizontally by the arc surface against its outer diameter. If the outer diameter is being tested, the electric push rod 10 drives the long plates 19 to move towards each other, clamping the side of the vertically placed piston ring with a flat surface to fix it vertically.

[0053] After the piston rings are fixed, the control panel 18 triggers the length measuring instrument 3 to start working, measuring the thickness or outer diameter of the piston rings in real time. The length measuring instrument 3 transmits the collected dimensional data to the control panel 18, which compares it with the preset tolerance standard to determine whether the piston rings are qualified. After the inspection is completed, the control panel 18 controls the motor 17 to reverse, the lead screw 5 to rotate in the opposite direction, and the slider 14 to drive the connecting column 6 and the clamping block 8 to rise and reset. At the same time, it controls the electric push rod 10 to move in the opposite direction, releasing the arc plate 11 or the long plate 19, allowing the operator to remove the piston rings. If the inspection result is qualified, the control panel 18 displays a qualified signal; if it is unqualified, it issues a reminder for subsequent processing.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dimensional detection device for a piston fitting, characterized by, Include: Base (1), the top of the base (1) is provided with size detection assembly; The size detection assembly includes a connecting column (6), the top of the base (1) is fixedly connected with a connecting rod (2), the top end of the connecting rod (2) is fixedly connected with a connecting plate (4), the connecting column (6) is slidably connected with the connecting plate (4), the bottom of the connecting column (6) is fixedly connected with two fixed plates (7), the bottom end of the two fixed plates (7) is fixedly connected with a pressing block (8); The top of the connecting plate (4) is provided with a length detector (3), and the length detector (3) is located on one side of the connecting column (6).

2. A dimensional inspection device for a piston assembly as defined in claim 1, wherein: The bottom of the connecting plate (4) is fixedly connected with an L plate, and the top of the L plate is provided with a motor (17).

3. A dimensional inspection device for a piston assembly as set forth in claim 2, wherein: The output end of the motor (17) is fixedly connected with a lead screw (5), one end of the connecting rod (2) is fixedly connected with a plate body (15), and the end of the lead screw (5) away from the motor (17) is rotatably connected with the plate body (15).

4. A dimensional detection device for a piston assembly as set forth in claim 3, wherein: The outer wall of the lead screw (5) is threadedly connected with a sliding block (14), one end of the sliding block (14) is fixedly connected with a limiting plate (12), and the inside of the connecting rod (2) is provided with a limiting groove (13), and the limiting plate (12) and the limiting groove (13) are slidably connected.

5. A dimensional inspection device for a piston assembly as set forth in claim 4, wherein: The end of the sliding block (14) away from the limiting plate (12) is fixedly connected with a driving plate (16), and one end of the driving plate (16) is fixedly connected with the connecting column (6).

6. A dimensional inspection device for a piston assembly as set forth in claim 2, wherein: The top of the base (1) is provided with a plurality of placing plates (9), and the inside of the plurality of placing plates (9) is provided with an electric push rod (10), wherein the opposite ends of the two electric push rods (10) are fixedly connected with an arc-shaped plate (11).

7. A dimensional inspection device for a piston assembly as defined in claim 6, wherein: The opposite ends of the other two electric push rods (10) are fixedly connected with a long plate (19), and the two long plates (19) are higher than the arc-shaped plate (11).

8. A dimensional inspection device for a piston assembly as set forth in claim 6, wherein: The end of the connecting plate (4) away from the length detector (3) is fixedly connected with a control panel (18), and the control panel (18) is electrically connected with the length detector (3), the plurality of electric push rods (10) and the motor (17).

9. The dimensional detection device for a piston assembly of claim 1, wherein: The inside of the pressing block (8) is provided with a cavity, the inside of the cavity is fixedly connected with a rod body (23), one side of the rod body (23) is provided with a plurality of telescopic rods (24), the bottom of the plurality of telescopic rods (24) is fixedly connected with an L-shaped plate (25), and the outside of the rod body (23) is slidably connected with a circular block (20).

10. A dimensional inspection device for a piston assembly as set forth in claim 9, characterized in that: The outer end of the circular block (20) is rotatably connected with two rotating rods (21), the outer ends of the two rotating rods (21) are rotatably connected with a roller (22), the outer wall of the roller (22) is sleeved with a sensing pad, and the sensing pad is electrically connected with a controller.

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