A spring concentricity detection device

Abstract

This utility model discloses a spring concentricity testing device, including a base, a movable testing mechanism, a concentricity testing mechanism, and a horizontal clamping mechanism. A front bracket is fixedly mounted on one side of the base, and a front slide rail is fixedly mounted in the middle of the other side of the front bracket. A first slider slides on the front slide rail, and a front limiting plate is fixedly mounted outside the first slider. A testing plate is fixedly mounted on the other side of the front limiting plate. Positioning holes are arranged in the middle of the front limiting plate, and a positioning locking pin is inserted into the upper middle of the front bracket. A concentricity testing mechanism is mounted on one side of the base, and a horizontal clamping mechanism is mounted on the other side of the base. This utility model, through the cooperation of the front slide rail and the positioning locking pin, quickly adjusts the height of the front limiting plate. After the positioning holes are locked, it automatically ensures that the spring axis is coaxial with the testing plate. It can adapt to multiple specifications of testing without changing the tooling. The testing plate presses down along the vertical slide rail to contact the top of the spring, and the pointer directly points to the multi-ring scale line on the testing plate.

Description

Technical Field

[0001] This utility model relates to the technical field of spring testing equipment, and in particular to a spring concentricity testing device. Background Technology

[0002] Spring concentricity is a core indicator for measuring spring manufacturing precision. It refers to the consistency of the position of the center points of each coil of the spring along the axial direction, i.e., the degree of deviation between the actual center and the theoretical reference center. Concentricity belongs to the positional tolerance in geometric tolerances. It describes the degree of offset between the actual center and the reference center, which directly affects the uniformity of force distribution, fatigue life, and assembly reliability of the spring. Spring concentricity is a core indicator of precision manufacturing and must be ensured through material optimization, process control, and high-precision testing throughout the entire process. Especially in fields such as engines and medical devices, the tolerance for deviation is extremely low, and strict adherence to standards is required.

[0003] A utility model application with application number 201920792930.3 discloses a device for measuring the concentricity of a spring. Through the threaded engagement of a first rotating rod, a first transmission gear, a first bevel gear, a second transmission gear, a second bevel gear, a threaded rod, and a sliding rod, the four arc-shaped clamping plates can be synchronously moved closer or further away simply by manually rotating the handle. This ensures that the fixed spring can be installed at the center of the mounting tube. The position of the circular bottom end of the spring can be marked by the projection of a laser light on the frosted glass, and the concentricity can be obtained by comparing it with the position of the circular top end of the spring, achieving high measurement accuracy and effectively reducing measurement errors.

[0004] However, the aforementioned spring concentricity measuring device cannot be compatible with detecting the concentricity of different springs, and it cannot simultaneously detect spring concentricity and length, resulting in low versatility and a large workload. Therefore, this utility model proposes a spring concentricity detection device to solve the problems existing in the prior art. Utility Model Content

[0005] To address the aforementioned problems, the purpose of this utility model is to propose a spring concentricity detection device. This device, through the cooperation of a front slide rail and a positioning locking pin, quickly adjusts the height of the front limit plate and locks the positioning hole, automatically ensuring that the spring axis is coaxial with the detection plate. It can adapt to multiple specifications of testing without changing tooling. By pressing the detection plate down along the vertical slide rail to contact the top of the spring, the pointer directly points to the multi-ring scale line on the detection plate. The concentricity deviation value can be read intuitively in a single operation, and it simultaneously supports concentricity and length detection.

[0006] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a spring concentricity detection device, including a base, a movable detection mechanism, a concentricity detection mechanism, and a horizontal clamping mechanism. The movable detection mechanism includes a front support, a front slide rail, a first slider, a front limiting plate, a detection plate, positioning holes, and a positioning locking pin. The front support is fixedly provided on one side of the base, and the front slide rail is fixedly provided in the middle of the other side of the front support. The first slider is slidably provided on the front slide rail. The front limiting plate is fixedly provided outside the first slider. The detection plate is fixedly provided on the other side of the front limiting plate. Positioning holes are arranged in the middle of the front limiting plate. A positioning locking pin is inserted into the upper middle of the front support. The concentricity detection mechanism is provided on one side of the base, and the horizontal clamping mechanism is provided on the other side of the base.

[0007] A further improvement is that the positioning locking pin corresponds to the positioning hole, and the positioning locking pin engages with the positioning hole for locking.

[0008] Further improvements are made in that: the concentricity detection mechanism includes scale lines, detection brackets, vertical slide rails and detection plates; the other side of the detection plate has multiple rings of scale lines; the base has detection brackets fixedly installed symmetrically on one side; the detection brackets have vertical slide rails fixedly installed inside; and the detection plates are installed between the vertical slide rails.

[0009] A further improvement is that the detection plate is located on the other side of the front limiting plate, and a pointer is fixedly provided in the middle of one side of the detection plate.

[0010] A further improvement is that the horizontal clamping mechanism includes a horizontal slide rail, a second slider, a clamping frame, a rear limiting plate, and a pushing mechanism. The base is symmetrically fixed with horizontal slide rails, and the second slider is slidably mounted on the horizontal slide rails. A clamping frame is fixed above the second slider, and a rear limiting plate is fixed on one side of the clamping frame. A pushing mechanism is provided on the other side of the base.

[0011] A further improvement is that the pushing mechanism includes an electric telescopic rod, a top block, and a pressure sensor. The electric telescopic rod is fixedly installed in the middle of the other side of the base. The top block is fixedly installed at the telescopic end of the electric telescopic rod, and a pressure sensor is fixedly installed on one side of the top block.

[0012] A further improvement is that one side of the top block is pushed against the other side of the clamping frame, and the sensing end of the pressure sensor is in contact with the other side of the clamping frame.

[0013] The beneficial effects of this utility model are as follows: This utility model, through the cooperation of the front slide rail and the positioning locking pin, quickly adjusts the height of the front limit plate and locks the positioning hole, automatically ensuring that the spring axis is coaxial with the detection plate. It can adapt to multi-specification detection without changing the tooling. By pressing the detection plate down along the vertical slide rail to contact the top of the spring, the pointer directly points to the multi-ring scale line on the detection plate. The concentricity deviation value can be read intuitively in a single operation, and concentricity and length detection are supported simultaneously. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the entire utility model;

[0015] Figure 2 This is a three-dimensional schematic diagram of the clamping frame of this utility model;

[0016] Figure 3 This is a left view of the detection disc of this utility model;

[0017] Figure 4 This is a right view of the detection disc of this utility model.

[0018] The components include: 1. Base; 2. Front support; 3. Front slide rail; 4. First slider; 5. Front limit plate; 6. Detection plate; 7. Positioning hole; 8. Positioning locking pin; 9. Scale line; 10. Detection support; 11. Vertical slide rail; 12. Detection plate; 13. Pointer; 14. Horizontal slide rail; 15. Second slider; 16. Clamping frame; 17. Rear limit plate; 18. Electric telescopic rod; 19. Top block; 20. Pressure sensor. Detailed Implementation

[0019] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0020] according to Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, this embodiment provides a spring concentricity detection device, including a base 1, a movable detection mechanism, a concentricity detection mechanism, and a horizontal clamping mechanism. The movable detection mechanism includes a front support 2, a front slide rail 3, a first slider 4, a front limiting plate 5, a detection plate 6, a positioning hole 7, and a positioning locking pin 8. The front support 2 is fixedly mounted on one side of the base 1, and the front slide rail 3 is fixedly mounted in the middle of the other side of the front support 2. The first slider 4 slides on the front slide rail 3, and the front limiting plate 5 is fixedly mounted outside the first slider 4. The detection plate 6 is fixedly mounted on the other side of the front limiting plate 5. The front limiting plates 5 are arranged in the middle. A positioning hole 7 is provided, and a positioning locking pin 8 is inserted into the upper middle of the front bracket 2. The positioning locking pin 8 corresponds to the positioning hole 7, and the positioning locking pin and the positioning hole 7 are locked together. When facing the concentricity detection of springs of different sizes, the first slider 4 and the front limit plate 5 are moved up and down along the front slide rail 3 as needed for adjustment. After adjustment, the positioning locking pin 8 is inserted into the corresponding positioning hole 7, so that the front limit plate 5 can move up and down and stop at a specific position, ensuring the concentricity of the detected spring and the limit plate. A concentricity detection mechanism is provided on one side of the base 1, and a horizontal clamping mechanism is provided on the other side of the base 1.

[0021] The concentricity testing mechanism includes a scale line 9, a testing bracket 10, a vertical slide rail 11, and a testing plate 12. The other side of the testing plate 6 has multiple rings of scale line 9, with a ring of scale line 9 every 1 mm. The testing bracket 10 is symmetrically fixed on one side of the base 1. The vertical slide rail 11 is fixedly fixed inside the testing bracket 10. The testing plate 12 is located between the vertical slide rails 11. The testing plate 12 is located on the other side of the front limit plate 5. A pointer 13 is fixedly fixed in the middle of one side of the testing plate 12. When testing is performed, the testing plate 12 is pushed down along the vertical slide rail 11, so that the testing plate 12 descends and contacts the top of the spring. The pointer 13 points to the position of the scale line 9 for easy and intuitive measurement of concentricity.

[0022] The horizontal clamping mechanism includes a horizontal slide rail 14, a second slider 15, a clamping frame 16, a rear limiting plate 17, and a pushing mechanism. The horizontal slide rail 14 is symmetrically fixed on the base 1. The second slider 15 is slidably mounted on the horizontal slide rail 14. The clamping frame 16 is fixed above the second slider 15. The rear limiting plate 17 is fixed on one side of the clamping frame 16. The pushing mechanism is located on the other side of the base 1. The pushing mechanism includes an electric telescopic rod 18, a top block 19, and a pressure sensor 20. The electric telescopic rod 18 is fixed in the middle of the other side of the base 1. The telescopic end of the electric telescopic rod 18... A top block 19 is fixedly provided, and a pressure sensor 20 is fixedly provided on one side of the top block 19. One side of the top block 19 is in contact with the other side of the clamping frame 16. The sensing end of the pressure sensor 20 is in contact with the other side of the clamping frame 16. When testing is performed, the electric telescopic rod 18 extends to push the top block 19 to press against the clamping frame 16, and pushes the second slider 15 and the clamping frame 16 to slide along the horizontal slide rail 14 towards the base 1. The spring is clamped and limited by the front limit plate 5 and the rear limit plate 17. During the testing process, multiple tests such as concentricity and length can be performed, effectively reducing the workload of the testing personnel.

[0023] When performing the spring concentricity detection device, the front limiting plate slides according to the spring size, and the first slider moves along the front slide rail. The positioning locking pin is inserted into the corresponding positioning hole to lock the height, ensuring that the detection plate and the spring are coaxial. Then, the electric telescopic rod is activated to push the top block, so that the clamping frame moves along the horizontal slide rail. The front and rear limiting plates clamp the spring in both directions. The pressure sensor monitors the clamping force in real time. After clamping, the detection plate is manually pushed down along the vertical slide rail until it contacts the top of the spring. The concentricity deviation value is directly read by pointing the pointer in the center of the detection plate to the scale line of the detection plate. The concentricity deviation is determined according to the number of scale circles indicated by the pointer. The entire process can be completed without changing the tooling, and the positioning, clamping and detection can be integrated.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A spring concentricity detection device, characterized in that: The device includes a base (1), a movable detection mechanism, a concentricity detection mechanism, and a horizontal clamping mechanism. The movable detection mechanism includes a front support (2), a front slide rail (3), a first slider (4), a front limiting plate (5), a detection plate (6), a positioning hole (7), and a positioning locking pin (8). The front support (2) is fixedly provided on one side of the base (1), and the front slide rail (3) is fixedly provided in the middle of the other side of the front support (2). The first slider (4) is slidably provided on the front slide rail (3). The front limiting plate (5) is fixedly provided outside the first slider (4). The detection plate (6) is fixedly provided on the other side of the front limiting plate (5). The positioning hole (7) is arranged in the middle of the front limiting plate (5). The positioning locking pin (8) is inserted in the upper middle of the front support (2). The concentricity detection mechanism is provided on one side of the base (1), and the horizontal clamping mechanism is provided on the other side of the base (1).

2. The spring concentricity detection device according to claim 1, characterized in that: The positioning locking pin (8) corresponds to the positioning hole (7), and the positioning locking pin cooperates with the positioning hole (7) to lock.

3. The spring concentricity detection device according to claim 1, characterized in that: The concentricity detection mechanism includes a scale line (9), a detection bracket (10), a vertical slide rail, and a detection plate (12). The other side of the detection plate (6) is provided with a scale line (9) in multiple rings. The detection bracket (10) is symmetrically fixed on one side of the base (1). The detection bracket (10) is fixedly provided on the inner side of the detection bracket (10). The detection plate (12) is provided between the vertical slide rails.

4. The spring concentricity detection device according to claim 3, characterized in that: The detection plate (12) is located on the other side of the front limiting plate (5), and a pointer (13) is fixedly provided in the middle of one side of the detection plate (12).

5. The spring concentricity detection device according to claim 1, characterized in that: The horizontal clamping mechanism includes a horizontal slide rail (14), a second slider (15), a clamping frame (16), a rear limiting plate (17), and a pushing mechanism. The horizontal slide rail (14) is symmetrically fixed on the base (1). The second slider (15) is slidably mounted on the horizontal slide rail (14). The clamping frame (16) is fixed above the second slider (15). The rear limiting plate (17) is fixed on one side of the clamping frame (16). The pushing mechanism is mounted on the other side of the base (1).

6. The spring concentricity detection device according to claim 5, characterized in that: The pushing mechanism includes an electric telescopic rod (18), a top block (19) and a pressure sensor (20). The electric telescopic rod (18) is fixedly provided on the middle of the other side of the base (1). The top block (19) is fixedly provided at the telescopic end of the electric telescopic rod (18). The pressure sensor (20) is fixedly provided on one side of the top block (19).

7. A spring concentricity detection device according to claim 6, characterized in that: The top block (19) is pushed against the other side of the clamping frame (16) on one side, and the sensing end of the pressure sensor (20) is in contact with the other side of the clamping frame (16).

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