A balance spring flatness testing fixture

Abstract

The utility model provides a hairspring flatness inspection fixture relates to hairspring inspection technical field, including clamp station, the clamp station top end along the length direction one side is equipped with hairspring inspection groove, both ends of hairspring inspection groove all are installed and go in and out material clamp, be installed between hairspring inspection groove and inspect clamp station, the in -out material clamp includes first shaft roll, first shaft roll has two and is parallel to up and down, first shaft roll rotation is installed in first axle seat, and the top of first axle seat is installed with lifting assembly, and the lifting assembly is driven to make the upper inspection head close / away from second shaft roll through first air cylinder and lift inspection head, the utility model discloses a hairspring flatness inspection fixture structure design is reasonable, and the setting of lifting assembly and first air cylinder makes the operation more convenient, and the operator only needs simple operation to complete the loading of hairspring, detection and taking out process, reduces the operation difficulty, improves work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hairspring inspection technology, and in particular to a hairspring flatness inspection fixture. Background Technology

[0002] A hairspring is a tiny mechanical component that plays a crucial role in many precision instruments, such as clocks, sensors, and microelectromechanical systems (MEMS).

[0003] The shape and dimensional accuracy of the hairspring directly affect the performance of these precision instruments. Therefore, accurate detection of the hairspring's flatness is one of the key steps to ensure its performance. Traditional methods often rely on manual visual inspection or simple measuring tools, which are not only inefficient but also difficult to achieve high precision. With the advancement of technology, the requirements for automation and flatness detection are becoming increasingly stringent, and existing detection technologies are becoming more and more sophisticated. However, existing hairspring flatness detection fixtures on the market still need further improvement in terms of structural design, ease of operation, and detection accuracy.

[0004] Specifically: on the one hand, the complex structure and cumbersome operation make it difficult for operators to get started, reducing work efficiency; on the other hand, the measurement accuracy is limited, especially for the effective detection of minor unevenness in some small hairsprings; in addition, some existing testing fixtures are prone to introducing additional deformation when loading and fixing the hairspring, thus affecting the accuracy of the test results. Therefore, we propose a hairspring flatness inspection fixture. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and design a hairspring flatness inspection fixture that is easy to operate and can provide high-precision test results.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A hairspring flatness inspection fixture includes a fixture platform, a hairspring inspection groove is provided on one side of the top of the fixture platform along the length direction, feeding and discharging clamps are installed at both ends of the hairspring inspection groove, and an inspection fixture platform is installed between the hairspring inspection grooves;

[0008] The feeding and discharging clamp includes a first shaft roller. There are two first shaft rollers that are parallel to each other. The upper first shaft roller is rotatably installed in a first shaft seat. A lifting assembly is installed above the first shaft seat. The lifting assembly drives the first shaft seat to rise and fall, so that the upper first shaft roller moves closer to / away from the lower first shaft roller.

[0009] The bottom of the inspection fixture table is equipped with an inspection head, which is installed on the output end of the first cylinder on the inspection fixture table. A second roller is provided below the inspection head. The first cylinder drives the inspection head to move up and down, so that the upper inspection head moves closer to / away from the second roller.

[0010] Furthermore, both the first and second shaft rollers are rotatably connected between the hairspring inspection groove.

[0011] Furthermore, a second bearing seat is installed at the bottom of both the first and second rollers.

[0012] Furthermore, both the first and second rollers are fitted with rubber rings, the thickness of which is less than 0.5 mm.

[0013] Furthermore, the lifting assembly consists of a bracket and a second cylinder, with the second cylinder mounted on the bracket and the bracket mounted above the hairspring inspection slot.

[0014] Furthermore, the inspection head includes an inspection contact ball, which is built into the inspection head and partially extends out of the bottom port of the inspection head. A capacitive proximity sensor assembly is provided inside the inspection head, and a double-coil spring is provided between the inspection contact ball and the capacitive proximity sensor assembly.

[0015] Furthermore, the distance between the test contact sphere and the capacitive proximity sensor assembly is ±0.002 to 0.008 mm.

[0016] Furthermore, an alarm light is installed on the top of the inspection fixture table, and the capacitive proximity sensor assembly is electrically connected to the alarm light.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The structure of the hairspring flatness inspection fixture of this utility model is reasonably designed. The setting of the lifting component and the first cylinder makes the operation more convenient. The operator can complete the loading, inspection and removal of the hairspring with simple operation, which reduces the difficulty of operation and improves the work efficiency.

[0019] 2. By precisely designing the distance between the contact ball and the capacitive proximity sensor assembly, and by using a high-precision capacitive proximity sensor assembly in conjunction with the feeding and discharging fixtures, minute unevenness of the hairspring can be accurately detected, thus improving the accuracy and reliability of the detection.

[0020] 3. The rubber rings surrounding the first and second rollers, as well as the elastic contact between the inspection contact ball and the hairspring, effectively prevent damage to the hairspring caused by the clamps, ensuring the integrity of the hairspring and the accuracy of the test results. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall structure of a hairspring flatness inspection fixture provided by this utility model;

[0022] Figure 2 A schematic diagram of the first bearing structure of a hairspring flatness inspection fixture provided by this utility model;

[0023] Figure 3 A schematic diagram of the inspection head of a hairspring flatness inspection fixture provided by this utility model;

[0024] Figure 4 A schematic diagram of the second bearing structure of a hairspring flatness inspection fixture provided by this utility model.

[0025] Illustration: 1. Fixture table;

[0026] 2. Hairspring inspection groove;

[0027] 3. Feeding / discharging clamps; 31. First shaft roller; 32. First shaft seat; 33. Lifting assembly; 331. Support; 332. Second cylinder;

[0028] 4. Inspection fixture table; 41. Second shaft roller; 42. Second shaft seat;

[0029] 5. Inspection head; 51. Inspection contact ball; 52. Capacitive proximity sensor assembly; 53. Double-coil spring; 54. Alarm light;

[0030] 6. First cylinder;

[0031] 7. Rubber ring. Detailed Implementation

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

[0033] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] Example 1

[0037] like Figure 1-4 As shown, this utility model provides a technical solution: a hairspring flatness inspection fixture, including a fixture table 1, a hairspring inspection groove 2 is provided on one side of the top of the fixture table 1 along the length direction, the two ends of the hairspring inspection groove 2 are connected to the hairspring feeding and taking out device, the two ends of the hairspring inspection groove 2 are equipped with feeding and discharging fixtures 3, and an inspection fixture table 4 is installed between the hairspring inspection grooves 2.

[0038] The feeding and discharging clamp 3 includes a first shaft roller 31. There are two first shaft rollers 31, which are parallel to each other. The upper first shaft roller 31 is rotatably installed in the first shaft seat 32, and a lifting component 33 is installed above the first shaft seat 32. The lifting component 33 drives the first shaft seat 32 to rise and fall, so that the upper first shaft roller 31 moves closer to / away from the lower first shaft roller 31, thereby facilitating the insertion and removal of the hairspring. The distance between the upper and lower first shaft rollers 31 can be adjusted according to the thickness of the hairspring to accommodate different specifications of hairspring.

[0039] The bottom of the inspection fixture table 4 is provided with an inspection head 5. The inspection head 5 is installed at the output end of the first cylinder 6 set on the inspection fixture table 4. A second shaft roller 41 is provided correspondingly below the inspection head 5. The first cylinder 6 drives the inspection head 5 to rise and fall, so that the inspection head 5 approaches / moves away from the second shaft roller 41, so as to perform flatness inspection on the hairspring placed on the second shaft roller 41.

[0040] Example 2

[0041] like Figure 1-4 As shown, both the lower first roller 31 and the second roller 41 are rotatably connected between the hairspring inspection groove 2. A second bearing 42 is installed at the bottom of both the lower first roller 31 and the second roller 41. This allows the hairspring to move smoothly during feeding, discharging, and inspection, reducing damage to the hairspring caused by friction.

[0042] Both the first roller 31 and the second roller 41 are fitted with rubber rings 7. The thickness of the rubber rings 7 is less than 0.5 mm. The rubber rings 7 can protect the hairspring and prevent the rollers from directly contacting the hairspring and causing wear. At the same time, the small thickness can also ensure the normal movement of the hairspring and the accuracy of inspection.

[0043] The lifting assembly 33 consists of a bracket 331 and a second cylinder 332. The second cylinder 332 is mounted on the bracket 331, which is mounted above the hairspring inspection groove 2. The extension and retraction of the second cylinder 332 drives the first shaft seat 32 on the bracket 331 to rise and fall, thereby realizing the lifting and lowering action of the upper first shaft roller 31.

[0044] The inspection head 5 includes an inspection contact ball 51, which is built into the inspection head 5 and partially extends out of the bottom port of the inspection head 5. The inspection head 5 is equipped with a capacitive proximity sensor assembly 52. ​​A double-coil spring 53 is provided between the inspection contact ball 51 and the capacitive proximity sensor assembly 52. ​​The double-coil spring 53 can provide a certain elastic buffer to ensure the stability of the inspection contact ball 51 when it contacts the hairspring, while avoiding excessive pressure on the hairspring.

[0045] The distance between the inspection contact ball 51 and the capacitive proximity sensor assembly 52 is ±0.002 to 0.008 mm. This distance setting ensures that the capacitive proximity sensor assembly 52 can accurately detect minute changes when the inspection contact ball 51 contacts the hairspring, thereby improving the inspection accuracy.

[0046] An alarm light 54 is installed on the top of the inspection fixture table 4. The capacitive proximity sensor assembly 52 is electrically connected to the alarm light 54. When the capacitive proximity sensor assembly 52 detects that the flatness of the hairspring does not meet the requirements, it will send a signal to the alarm light 54, causing the alarm light 54 to light up and remind the operator that there is a flatness problem with the hairspring.

[0047] The working process of this utility model is as follows: When using a hairspring flatness inspection fixture, firstly, according to the specifications of the hairspring to be inspected, the distance between the upper and lower first shaft rollers 31 in the feed and discharge fixture 3 is adjusted by the lifting component 33 so that the hairspring can pass through smoothly. Specifically, the second cylinder 332 is started, and the second cylinder 332 extends and retracts to drive the first shaft seat 32 on the bracket 331 to rise and fall, thereby adjusting the position of the upper first shaft roller 31 until the distance between the upper and lower first shaft rollers 31 is suitable for the insertion of the hairspring.

[0048] Then, place one end of the hairspring on the lower first shaft roller 31 of the feed clamp 3, and move the hairspring along the hairspring inspection groove 2 toward the inspection clamp table 4 by manual or mechanical means, so that the hairspring passes through the second shaft roller 41 and reaches the appropriate position.

[0049] Next, the first cylinder 6 on the inspection fixture table 4 is activated. The first cylinder 6 drives the inspection head 5 to descend, so that the inspection contact ball 51 approaches the hairspring on the second shaft roller 41 until the inspection contact ball 51 makes light contact with the hairspring. At this time, the capacitive proximity sensor assembly 52 starts to work and detects the changes in relevant parameters when the inspection contact ball 51 contacts the hairspring.

[0050] During the inspection process, the capacitive proximity sensor assembly 52 monitors the flatness of the hairspring in real time. If the hairspring flatness meets the requirements, the capacitive proximity sensor assembly 52 will not send a signal to the alarm light 54, and the alarm light 54 will remain off. If the hairspring flatness does not meet the requirements, the inspection contact ball 51 contacts the capacitive proximity sensor assembly 52 upwards, thereby detecting the abnormality and sending a signal to the alarm light 54. The alarm light 54 will then illuminate, reminding the operator that there is a problem with the hairspring flatness.

[0051] After the inspection is completed, the first cylinder 6 drives the inspection head 5 to rise, so that the inspection contact ball 51 moves away from the hairspring; if the next hairspring needs to be inspected, the above steps can be repeated.

[0052] Through the above workflow, the hairspring flatness inspection fixture of this utility model can efficiently and accurately inspect the flatness of the hairspring, improving inspection efficiency and accuracy, while protecting the hairspring from damage.

[0053] 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 hairspring flatness inspection fixture, comprising a fixture table (1), wherein a hairspring inspection groove (2) is provided on one side of the top of the fixture table (1) along the length direction, characterized in that: Both ends of the hairspring inspection tank (2) are equipped with infeed and discharge clamps (3), and an inspection clamp table (4) is installed between the hairspring inspection tanks (2). The feeding and discharging clamp (3) includes a first shaft roller (31), there are two first shaft rollers (31) and they are parallel to each other. The upper first shaft roller (31) is rotatably installed in the first shaft seat (32), and a lifting assembly (33) is installed above the first shaft seat (32). The lifting assembly (33) drives the first shaft seat (32) to rise and fall, so that the upper first shaft roller (31) moves closer to / away from the lower first shaft roller (31). The bottom of the inspection fixture table (4) is provided with an inspection head (5). The inspection head (5) is installed on the output end of the first cylinder (6) set on the inspection fixture table (4). A second roller (41) is provided below the inspection head (5). The inspection head (5) is raised and lowered by the first cylinder (6) so that the upper inspection head (5) moves closer to / away from the second roller (41).

2. The hairspring flatness inspection fixture according to claim 1, characterized in that: The first roller (31) and the second roller (41) are rotatably connected between the hairspring inspection groove (2).

3. The hairspring flatness inspection fixture according to claim 1, characterized in that: The bottom of the first roller (31) and the second roller (41) are both equipped with a second bearing seat (42).

4. The hairspring flatness inspection fixture according to claim 1, characterized in that: The first roller (31) and the second roller (41) are both fitted with rubber rings (7), and the thickness of the rubber rings (7) is less than 0.5 mm.

5. A hairspring flatness inspection fixture according to claim 1, characterized in that: The lifting assembly (33) consists of a bracket (331) and a second cylinder (332), the second cylinder (332) being mounted on the bracket (331), and the bracket (331) being mounted above the hairspring inspection groove (2).

6. A hairspring flatness inspection fixture according to claim 1, characterized in that: The inspection head (5) includes an inspection contact ball (51), which is built into the inspection head (5) and partially extends out of the bottom port of the inspection head (5). The inspection head (5) is provided with a capacitive proximity sensor assembly (52), and a double-coil spring (53) is provided between the inspection contact ball (51) and the capacitive proximity sensor assembly (52).

7. A hairspring flatness inspection fixture according to claim 6, characterized in that: The distance between the test contact sphere (51) and the capacitive proximity sensor assembly (52) is ±0.002 to 0.008 mm.

8. A hairspring flatness inspection fixture according to claim 7, characterized in that: An alarm light (54) is installed on the top of the inspection fixture table (4), and the capacitive proximity sensor assembly (52) is electrically connected to the alarm light (54).

Images