Precise spring length detection device

Abstract

The utility model relates to the technical field of spring detection, and discloses a precision spring length detection device comprising a spring testing machine, the spring testing machine comprises a machine body, the machine body is slidably provided with an electric sliding seat, and the electric sliding seat and the machine body are both provided with positioning assemblies; the positioning assembly comprises a positioning disc fixedly connected with the machine body or the electric sliding base. According to the precise spring length detection device, the positioning assemblies are arranged on the movable module and the fixed module of the spring testing machine respectively, the axes of the two positioning assemblies coincide, when the spring is placed, the stop strip is inserted into the end of the spring, then the end of the spring can be temporarily limited on the stop strip, and then the spring can be fixed through mutual matching of the screw and the threaded hole in the stop strip. When the spring is fixed, the spring can be fixed, so that the two ends of the spring can be aligned in the fixing process of the spring, the whole spring is kept in a vertical state, and the accuracy degree of a subsequent length detection result is ensured.

Description

Technical Field

[0001] This utility model relates to the field of spring detection technology, specifically a precision spring length detection device. Background Technology

[0002] A spring testing machine is an instrument specifically designed to test the performance of springs. It is suitable for various types of precision springs. During the test, the instrument records the displacement changes of the spring under force, thereby indirectly determining the original length or the length after deformation of the spring.

[0003] When a spring is placed on a traditional testing machine for testing, the two ends of the spring need to be attached to the fixed end and the movable end of the machine body, respectively. By moving the movable end, the force on the spring is simulated to measure the change in the length under force. However, the upper and lower ends of the spring are not easy to align. In the subsequent force state of the spring, the spring is easily displaced by the force, which affects the accuracy of its length detection. Therefore, we propose a precision spring length detection device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a precision spring length detection device, which solves the problems mentioned in the background.

[0005] This utility model provides the following technical solution: a precision spring length detection device, comprising: a spring testing machine, the spring testing machine including a machine body, an electric slide block slidably disposed on the machine body, and positioning components disposed on both the electric slide block and the machine body; the positioning component including a positioning disk fixedly connected to the machine body or the electric slide block, a stop bar slidably disposed on the positioning disk, and a first gear shaft and a second gear shaft rotatably disposed on the positioning component, a screw and a secondary bevel gear respectively fixedly mounted at both ends of the first gear shaft, a main bevel gear and a linkage gear respectively fixedly mounted at both ends of the second gear shaft, the linkage gear meshing with a ring gear, the screw being threadedly connected to the stop bar, and the... The secondary bevel gear meshes with the main bevel gear for transmission. The positioning disk is also equipped with an adjustment assembly, which includes a drive shaft rotatably disposed inside the positioning disk. A columnar head and a worm are fixedly mounted at both ends of the drive shaft. The worm is meshed with a worm wheel rotatably connected to the positioning disk. A connecting disk is fixedly mounted on the upper surface of the worm wheel. The connecting disk is equipped with a bearing for rotatably connecting to the positioning disk, and its upper surface is fixedly connected to a ring gear. A sliding rod is slidably disposed inside the drive shaft. A sliding plate and a connecting rod are fixedly mounted at both ends of the sliding rod. A return spring is fixedly mounted on the side of the sliding plate, and a friction block is fixedly mounted at the end of the connecting rod.

[0006] Preferably, the outer surface of the baffle is provided with a threaded hole, and the boundary of the baffle is designed with rounded corners.

[0007] Preferably, there are three linkage gears, and all three linkage gears are meshed with ring gears.

[0008] Preferably, an annular protrusion is fixedly provided on the upper surface of the connecting disk, and the bearing is connected to the inner surface of the annular protrusion, and the annular protrusion is fixedly connected to the annular gear.

[0009] Preferably, a circular protrusion is fixedly provided at the center of the lower surface of the connecting disk, and the circular protrusion is fixedly connected to the worm gear, wherein the axis of the worm gear coincides with the axis of the connecting disk.

[0010] Preferably, the columnar head is located at the end of the drive shaft that passes through the positioning disk, and the columnar head has a hexagonal opening.

[0011] Preferably, the return spring is located inside the hexagonal opening of the cylindrical head, and the end of the return spring is fixedly connected to the cylindrical head.

[0012] Preferably, the friction block has a ring structure design, and the side of the friction block is provided with friction texture to enhance friction.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This precision spring length detection device establishes positioning components on the movable and fixed modules of the spring testing machine. The axes of these two positioning components coincide. When placing the spring, a stop bar is first inserted into the end of the spring to temporarily restrict the end of the spring to the stop bar. Then, the spring is fixed by the screw engaging with the threaded hole on the stop bar. In this way, during the fixing process, it can be ensured that the two ends of the spring are aligned, so that the entire spring remains in a vertical state, thereby ensuring the accuracy of the subsequent length detection results.

[0015] 2. This precision spring length detection device, by setting an adjustment component, can adjust the position of the stop bar in real time, thereby meeting the positioning and fixing requirements of springs of different sizes, expanding the applicability of the overall structure, and improving its practicality. At the same time, the reset spring and friction block in the adjustment component cooperate with each other to lock the overall structure by forming a certain friction force, so as to ensure the positioning effect of the positioning component and meet the actual use requirements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the positioning disc structure of this utility model;

[0018] Figure 3 This is a first cross-sectional view of the positioning disk structure of this utility model;

[0019] Figure 4 This is an exploded view of the internal structure of the positioning disc of this utility model;

[0020] Figure 5 This is a second cross-sectional view of the positioning disk structure of this utility model;

[0021] Figure 6 This is an exploded view of the slide bar structure of this utility model.

[0022] In the diagram: 1. Spring testing machine; 2. Positioning assembly; 21. Positioning plate; 22. Stop bar; 23. Threaded hole; 24. Screw; 25. First gear shaft; 26. Secondary bevel gear; 27. Second gear shaft; 28. Main bevel gear; 29. ​​Linkage gear; 210. Ring gear; 3. Adjusting assembly; 31. Columnar head; 32. Slide plate; 33. Connecting plate; 34. Worm gear; 35. Worm; 36. Bearing; 37. Drive shaft; 38. Friction block; 39. Slide rod; 310. Connecting rod; 311. Return spring. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-6 A precision spring length testing device includes: a spring testing machine 1, the spring testing machine 1 includes a machine body, an electric slide is slidably arranged on the machine body, and positioning components 2 are arranged on both the electric slide and the machine body.

[0025] The positioning assembly 2 includes a positioning disk 21 fixedly connected to the machine body or electric slide. A stop bar 22 is slidably arranged on the positioning disk 21. A first gear shaft 25 and a second gear shaft 27 are also rotatably arranged on the positioning assembly 2. A screw 24 and a secondary bevel gear 26 are fixedly installed at both ends of the first gear shaft 25, and a main bevel gear 28 and a linkage gear 29 are fixedly installed at both ends of the second gear shaft 27. The linkage gear 29 is meshed with a ring gear 210. The screw 24 is threadedly connected to the stop bar 22, and the secondary bevel gear 26 is meshed with the main bevel gear 28 for transmission. The outer surface of the stop bar 22 is provided with a threaded hole 23, and the boundary of the stop bar 22 is designed with rounded corners. There are three linkage gears 29 in total, and all three linkage gears 29 are meshed with the ring gear 210 to ensure the flexibility of the overall structural design to meet the sleeve requirements of springs of different sizes to be tested.

[0026] The positioning disk 21 is also equipped with an adjustment assembly 3, which includes a drive shaft 37 rotatably disposed inside the positioning disk 21. A columnar head 31 and a worm gear 35 are fixedly mounted at both ends of the drive shaft 37, respectively. The worm gear 35 is meshed with and drives a worm wheel 34 rotatably connected to the positioning disk 21. A connecting disk 33 is fixedly mounted on the upper surface of the worm wheel 34. A bearing 36 for rotatably connecting to the positioning disk 21 is provided on the connecting disk 33, and the upper surface of the connecting disk 33 is fixedly connected to a ring gear 210. A slide rod 39 is slidably disposed inside the drive shaft 37. A slide plate 32 and a connecting rod 310 are fixedly mounted at both ends of the slide rod 39, respectively. A return spring 311 is fixedly mounted on the side of the slide plate 32, and a friction block 38 is fixedly mounted at the end of the connecting rod 310. A friction block 38 is fixedly disposed on the upper surface of the connecting disk 33. An annular protrusion is provided, and the bearing 36 is connected to the inner surface of the annular protrusion. The annular protrusion is fixedly connected to the annular gear 210. A circular protrusion is fixedly provided at the center of the lower surface of the connecting disk 33. The circular protrusion is fixedly connected to the worm gear 34. The axis of the worm gear 34 coincides with the axis of the connecting disk 33. The columnar head 31 is located at the end of the drive shaft 37 that passes through the positioning disk 21. The columnar head 31 has a hexagonal opening. The return spring 311 is located inside the hexagonal opening of the columnar head 31. The end of the return spring 311 is fixedly connected to the columnar head 31. This allows the user to adjust the state of the overall structure using a hexagonal wrench, thereby meeting the actual application requirements. The friction block 38 has an annular structure design, and the side of the friction block 38 is provided with friction texture to enhance friction.

[0027] The working principle of the spring testing machine 1 mainly consists of a machine body, an electric slide, and a control panel. When testing items such as spring length, the two ends of the spring are fixed to the electric slide and the machine body respectively. The electric slide moves up and down, and the spring is deformed by the force. At this time, the spring length and other information are detected. The entire spring testing machine 1 is a product of existing technology, and the spring length detection function is also an existing function. Therefore, its specific operation steps and principles will not be elaborated in this article.

[0028] The positioning disk 21 fixed on the electric slide coincides with the axis of the positioning disk 21 fixed on the machine body. Therefore, when the two ends of the spring are respectively set at the center of the two positioning disks 21, the two ends of the spring can be aligned and the spring can be kept in a vertical state for testing. In actual operation: insert the hex wrench into the cylindrical head 31, the slide plate 32 is squeezed, and the friction block 38 is driven to slide through the slide rod 39 and the connecting rod 310, so that a gap is created between the friction block 38 and the positioning disk 21. Then, the cylindrical head 31 is driven by the wrench. After the head 31 rotates, the drive shaft 37, which is fixedly connected to the columnar head 31, and the worm 35, which is fixedly fixed to the end of the drive shaft 37, rotate together. The worm 35 meshes with the worm wheel 34, which is fixedly connected to the connecting disk 33. The connecting disk 33 is rotatably connected to the positioning disk 21 using the bearing 36. The upper surface of the connecting disk 33 is fixedly connected to the ring gear 210, which meshes with the linkage gear 29. The second gear shaft 27, which is fixedly connected to the linkage gear 29, is fixedly connected to the secondary bevel gear 26. The main bevel gear 28 is dynamically connected, while the secondary bevel gear 26 is fixedly connected to the screw 24 via the first gear shaft 25. Therefore, after the drive shaft 37 rotates, it can drive all the screws 24 on the positioning disk 21 to rotate together. After the screws 24 rotate, they can drive the threadedly connected stop bars 22 to slide on the positioning disk 21 until the distance between the three stop bars 22 can match the opening at the end of the spring. Then, the wrench is pulled out. Under the elastic force of the return spring 311, which is fixedly connected to the slide plate 32 and the column head 31 at both ends, the slide plate 32 and the slide rod 39 and other structures are driven to slide back, eliminating the gap between the friction block 38 and the positioning disk 21. This makes the friction texture on the friction block 38 contact and match the positioning disk 21 tightly, thereby forming a certain friction force, restricting the rotation of the drive shaft 37 and other structures, and thus locking the state of the overall structure. Finally, the spring to be tested can be sleeved on the three stop bars 22, and the end of the spring to be tested can be fixed by connecting the threaded hole 23 on the stop bar 22 with a screw with a nut.

[0029] 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 precision spring length measuring device, characterized by, Include: Spring testing machine (1), the spring testing machine (1) includes the body, the electric sliding seat is arranged on the body and is slid, the electric sliding seat and the body are both provided with positioning assembly (2); The positioning assembly (2) includes the positioning disc (21) fixedly connected with the body or the electric sliding seat, the blocking strip (22) is slidably arranged on the positioning disc (21), and the first gear shaft (25) and the second gear shaft (27) are further rotatably arranged on the positioning assembly (2), the both ends of the first gear shaft (25) are respectively fixedly installed with screw rod (24) and auxiliary bevel gear (26), the both ends of the second gear shaft (27) are respectively fixedly installed with main bevel gear (28) and linkage gear (29), the linkage gear (29) is meshed with annular gear (210), the screw rod (24) is threadedly connected with the blocking strip (22), and the auxiliary bevel gear (26) is meshed and driven with the main bevel gear (28); The positioning disc (21) is further provided with adjusting assembly (3), the adjusting assembly (3) includes driving shaft (37) rotatably arranged in the positioning disc (21), the both ends of the driving shaft (37) are respectively fixedly installed with cylindrical head (31) and worm (35), the worm (35) is meshed and driven with the worm gear (34) rotatably connected with the positioning disc (21), the upper surface of the worm gear (34) is fixedly installed with connecting disc (33), the connecting disc (33) is provided with bearing (36) for being rotatably connected with the positioning disc (21), and the upper surface of the connecting disc (33) is fixedly connected with the annular gear (210), the driving shaft (37) is slidably arranged with slide rod (39), the both ends of the slide rod (39) are respectively fixedly installed with slide plate (32) and connecting rod (310), the side surface of the slide plate (32) is fixedly installed with return spring (311), and the end of the connecting rod (310) is fixedly installed with friction block (38).

2. A precision spring length measuring device according to claim 1, wherein The outer surface of the blocking strip (22) is provided with a threaded hole (23), and the boundary of the blocking strip (22) is designed as a fillet.

3. The precision spring length measuring device of claim 1, wherein, The linkage gear (29) is provided with three, and the three linkage gears (29) are all meshed with the annular gear (210).

4. The precision spring length measuring device of claim 1 wherein, The upper surface of the connecting disc (33) is fixedly provided with an annular protrusion, and the inner surface of the annular protrusion is connected with the bearing (36), and the annular protrusion is fixedly connected with the annular gear (210).

5. The precision spring length measuring device of claim 1 wherein, The center of the lower surface of the connecting disc (33) is fixedly provided with a circular protrusion, which is fixedly connected with the worm gear (34), and the axis of the worm gear (34) coincides with the axis of the connecting disc (33).

6. The precision spring length measuring device of claim 1 wherein, The cylindrical head (31) is located on the end of the driving shaft (37) passing through the positioning disc (21), and a hexagonal opening cavity is formed in the cylindrical head (31).

7. A precision spring length measuring device according to claim 6, wherein The return spring (311) is located in the hexagonal opening cavity of the cylindrical head (31), and the end of the return spring (311) is fixedly connected with the cylindrical head (31).

8. The precision spring length measuring device of claim 1 wherein, The friction block (38) is designed as an annular structure, and the side surface of the friction block (38) is provided with friction lines for enhancing friction.

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