Instrument hairspring edge cutting device
By designing a clock spring trimming device that combines limiting and clamping components, the problems of low trimming efficiency and high manpower consumption in existing technologies are solved, achieving the effect of trimming multiple clock springs simultaneously and conveniently recycling debris.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU WEIMING PRECISION CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-04-21
AI Technical Summary
The existing instrument hairspring trimming device requires manual placement and handling, resulting in low work efficiency and high manpower consumption.
An instrument hairspring trimming device is designed, which includes a trimming component, a limiting component, a clamping component, and a recovery component. The limiting groove and locking rod work together to ensure the accuracy of the hairspring position, the clamping component prevents the hairspring from bouncing, and the recovery component facilitates the collection of debris, enabling multiple hairsprings to be trimmed simultaneously.
It improves the efficiency of hairspring trimming, reduces manpower consumption, ensures trimming quality, and facilitates debris recycling.
Smart Images

Figure CN224143385U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of instrument hairspring processing technology, specifically an instrument hairspring trimming device. Background Technology
[0002] A hairspring is a very thin spring, usually made of steel, coiled around the balance wheel. The variation in the effective length of the hairspring determines the moment of inertia and amplitude period of the balance wheel. The hairspring is one of the factors affecting the accuracy of timekeeping. Sometimes, the hairspring needs to be trimmed during manufacturing using a trimming device.
[0003] In the existing technology, there is a stable instrument hairspring trimming device with application number CN202122087763.2. This application places the hairspring on the hairspring placement device, then takes the end to be trimmed, and places it on the hairspring cutting device through the hairspring clamping device, and then trims the edge. However, when trimming the hairspring, it is necessary to manually place each hairspring on the hairspring placement device. After the edge of each hairspring is trimmed, it is taken out before the next hairspring can be placed and trimmed. The work efficiency is low and the labor consumption is large. Utility Model Content
[0004] To overcome the shortcomings of the existing technologies, an instrument hairspring trimming device is proposed.
[0005] The technical solution adopted by this utility model to solve its technical problem is:
[0006] An instrument hairspring trimming device, comprising:
[0007] Base;
[0008] A trimming assembly, which is installed at the middle of the upper end of the base, is used to trim the edge of the hairspring.
[0009] The edge-cutting component includes:
[0010] A cutting cylinder is fixedly installed at the upper middle part of the base. A receiving plate is fixedly installed inside the cutting cylinder. A limit rod is fixedly installed at the upper middle part of the receiving plate. A cutting frame is slidably connected inside the cutting cylinder.
[0011] Preferably, a cutter is fixedly installed on the upper end of the cutting frame, and fixed blocks are fixedly installed at the front and rear ends of the cutting cylinder. A lead screw is rotatably connected between the fixed blocks, and a slider is rotatably connected to the outside of the lead screw.
[0012] Preferred options also include:
[0013] A limiting component, which is installed inside the cutting edge component, is used to limit the movement of the hairspring.
[0014] Preferably, the limiting component includes:
[0015] A limiting plate is rotatably connected to the base and located at the lower end of the cutting cylinder. A locking rod is fixedly installed on the upper end of the limiting plate, and limiting grooves are opened on the left and right sides of the front end of the cutting cylinder.
[0016] Preferred options also include:
[0017] A clamping assembly, which is installed on the upper end of the base, is used to clamp the hairspring.
[0018] Preferably, the clamping assembly includes:
[0019] Fixed columns are fixedly installed on the front and rear sides of the upper end of the base. A top plate is fixedly installed on the upper end of the fixed column, a hydraulic rod is fixedly installed on the lower end of the top plate, a pressure plate is fixedly installed on the lower end of the hydraulic rod, and a sponge pad is glued to the lower end of the pressure plate.
[0020] Preferred options also include:
[0021] A recycling component is installed on the left and right sides of the upper end of the base and is used to collect debris.
[0022] Preferably, the recycling component includes:
[0023] The base has collection slots on the upper left and right sides. A grid plate is rotatably connected to the upper part of the collection slots. A storage box is slidably connected inside the collection slots. A stabilizing rod is fixedly installed inside the upper part of the storage box. A stop block is rotatably connected to the upper part of the base near the central axis of the collection slots.
[0024] The beneficial effects of this utility model are:
[0025] The limiting component of this utility model cooperates with the locking rod and the limiting groove. The limiting plate drives the locking rod to rotate, thereby rotating within the limiting groove and pushing the hairspring to rotate. This ensures the accuracy of the hairspring position during trimming and improves the quality of the hairspring after trimming. At the same time, the trimming component cooperates with the trimming frame and the trimmer to trim the hairspring. This facilitates trimming multiple hairsprings simultaneously, and the left and right sides of the hairspring are trimmed at the same time, resulting in high work efficiency and reduced manpower consumption.
[0026] The clamping component of this invention, through the cooperation of a pressure plate and a sponge pad, prevents the hairspring from bouncing during edge trimming, thus affecting the accuracy of the edge trimming position and the quality of the edge trimming. At the same time, the recycling component, through the cooperation of a storage box and a grid plate, facilitates the collection and retrieval of debris, making it easy to recycle and reuse the debris. Attached Figure Description
[0027] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0028] Figure 1 This is a perspective view of the present invention;
[0029] Figure 2 This is a cross-sectional view of the base in this utility model;
[0030] Figure 3 This is a perspective view of the clamping component in this utility model;
[0031] Figure 4 This is a perspective view of the edge-cutting component in this utility model;
[0032] Figure 5 This is a perspective view of the edge-cutting frame in this utility model;
[0033] Figure 6 This is a three-dimensional view of the storage box in this utility model.
[0034] Legend:
[0035] 1. Base;
[0036] 2. Edge trimming assembly; 201. Edge trimming cylinder; 202. Receiving plate; 203. Limiting rod; 204. Edge trimming frame; 205. Cutting blade; 206. Fixing block; 207. Lead screw; 208. Sliding block;
[0037] 3. Limiting components; 301. Limiting plate; 302. Locking rod; 303. Limiting groove;
[0038] 4. Clamping assembly; 401. Fixing column; 402. Top plate; 403. Hydraulic rod; 404. Pressure plate; 405. Sponge pad;
[0039] 5. Recycling components; 501. Collection trough; 502. Grid plate; 503. Storage box; 504. Stabilizer bar; 505. Stop block. Detailed Implementation
[0040] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0041] Specific implementation examples are given below.
[0042] Example 1:
[0043] Please see Figures 1 to 6 This utility model provides an instrument hairspring trimming device, including: a base 1; a trimming component 2, a limiting component 3, a pressing component 4 and a recovery component 5.
[0044] In this embodiment, when trimming the hairspring, the clamping component 4 is first activated to lift the clamping component 4 and remove the cover on the upper end of the trimming component 2. Then, the hairspring is placed into the trimming component 2, and the limiting component 3 is activated to ensure the accuracy of the hairspring position. At the same time, the clamping component 4 is activated again to press down and limit the hairspring to prevent it from shaking when trimming. Then, the trimming component 2 trims the hairspring.
[0045] Example 2:
[0046] Based on Embodiment 1, a trimming component 2 and a limiting component 3 are further disclosed. The trimming component 2 is installed at the middle of the upper end of the base 1 and is used to trim the hairspring. The limiting component 3 is installed inside the trimming component 2 and is used to limit the hairspring.
[0047] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the edge trimming assembly 2 includes: an edge trimming cylinder 201 fixedly installed in the middle of the upper end of the base 1; a receiving plate 202 fixedly installed inside the edge trimming cylinder 201; a limiting rod 203 fixedly installed in the middle of the upper end of the receiving plate 202; an edge trimming frame 204 slidably connected inside the edge trimming cylinder 201; a cutter 205 fixedly installed at the upper end of the edge trimming frame 204; fixing blocks 206 fixedly installed at the front and rear ends of the edge trimming cylinder 201; a lead screw 207 rotatably connected between the fixing blocks 206; and a slider 208 rotatably connected to the outside of the lead screw 207. The limiting assembly 3 includes: a limiting plate 301 rotatably connected to the lower end of the edge trimming cylinder 201 inside the base 1; a locking rod 302 fixedly installed at the upper end of the limiting plate 301; and limiting grooves 303 opened on the left and right sides of the front end of the edge trimming cylinder 201.
[0048] In this embodiment, when trimming the hairspring, the hairspring is placed inside the trimming tube 201 and fitted onto the limiting rod 203, with its lower end supported by the receiving plate 202. Multiple hairsprings can be added and fitted onto the limiting rod 203, while simultaneously engaging both sides of the hairspring into the limiting groove 303. Then, the motor is started to rotate the limiting plate 301, and the locking rod 302 also rotates with the limiting plate 301, thus rotating within the limiting groove 303. This pushes the hairspring to rotate on the limiting rod 203, ensuring that both sides of the hairspring engage with the limiting groove 303. The fit ensures the accuracy of the hairspring position during trimming, improving the quality of the trimmed hairspring. Then, the motor is started to drive the lead screw 207 to rotate. The rotation of the lead screw 207 causes the slider 208 to slide between the fixed blocks 206. The sliding of the fixed blocks 206 synchronously drives the trimming frame 204 to slide. The cutter 205 then slides upward with the trimming frame 204 to trim the hairspring. This allows for simultaneous trimming of multiple hairsprings, with both sides of the hairspring being trimmed simultaneously, resulting in high work efficiency and reduced manpower consumption.
[0049] Example 3:
[0050] Based on Embodiment 1, a clamping assembly 4 is further disclosed. The clamping assembly 4 is installed on the upper end of the base 1 and is used to clamp the hairspring.
[0051] like Figure 1 and Figure 3 As shown, the clamping assembly 4 includes: a fixing column 401 fixedly installed on the front and rear sides of the upper end of the base 1, a top plate 402 fixedly installed on the upper end of the fixing column 401, a hydraulic rod 403 fixedly installed on the lower end of the top plate 402, a pressure plate 404 fixedly installed on the lower end of the hydraulic rod 403, and a sponge pad 405 adhered to the lower end of the pressure plate 404.
[0052] In this embodiment, after the entire hairspring is placed into the trimming tube 201, the hydraulic rod 403 on the top plate 402 is activated. The hydraulic rod 403 pushes the pressure plate 404 down, so that the lower end of the pressure plate 404 is in contact with the hairspring. This prevents the hairspring from bouncing and affecting the accuracy of the trimming position when trimming the hairspring, thus affecting the quality of the trimming. At the same time, the lower end of the pressure plate 404 contacts the hairspring through the sponge pad 405, preventing the pressure plate 404 from rigidly contacting the hairspring and causing deformation and damage to the hairspring. When placing the hairspring, the hydraulic rod 403 is activated to drive the pressure plate 404 down, thereby exposing the upper end of the trimming tube 201, which facilitates the handling and placement of the hairspring.
[0053] Example 4:
[0054] Based on Embodiment 1, a recycling component 5 is further disclosed. The recycling component 5 is installed on the left and right sides of the upper end of the base 1 and is used to collect the debris.
[0055] like Figure 1 and Figure 6As shown, the recycling component 5 includes: a collection trough 501 opened on the left and right sides of the upper end of the base 1, a grid plate 502 rotatably connected to the upper end of the collection trough 501, a storage box 503 slidably connected to the inside of the collection trough 501, a stabilizing rod 504 fixedly installed at the upper end of the storage box 503, and a stop block 505 rotatably connected to the upper end of the base 1 on the side of the collection trough 501 near the central axis.
[0056] In this embodiment, when the hairspring is trimmed, the trimmed debris falls to both sides. Most of the debris falls onto the grid plate 502 and then into the collection box 503 through the slots on the grid plate 502. This facilitates the collection of debris generated during trimming. After a certain amount of debris has been collected in the collection box 503, the stop block 505 is rotated to remove the obstruction from the grid plate 502. Then, the grid plate 502 is rotated to expose the collection groove 501. Finally, the stabilizing rod 504 is pulled to remove the collection box 503 from the collection groove 501. This facilitates the collection and removal of debris and the recycling and reuse of the debris.
[0057] 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.
Claims
1. An instrument hairspring trimming device, characterized by, include: Base (1); Edge trimming assembly (2), which is installed at the middle of the upper end of the base (1) and is used to trim the hairspring; The edge-cutting component (2) includes: A cutting cylinder (201) is fixedly installed in the middle of the upper end of the base (1). A receiving plate (202) is fixedly installed inside the cutting cylinder (201). A limit rod (203) is fixedly installed in the middle of the upper end of the receiving plate (202). A cutting frame (204) is slidably connected inside the cutting cylinder (201).
2. An instrument hairspring trimming device according to claim 1, wherein: A cutter (205) is fixedly installed on the upper end of the cutting frame (204), and a fixing block (206) is fixedly installed at the front and rear ends of the cutting cylinder (201). A lead screw (207) is rotatably connected between the fixing blocks (206), and a slider (208) is rotatably connected to the outside of the lead screw (207).
3. An instrument hairspring trimming device according to claim 1 wherein, Also includes: Limiting component (3), which is installed inside the cutting component (2) and is used to limit the hairspring.
4. An instrument hairspring trimming device according to claim 3, wherein, The limiting component (3) includes: A limiting plate (301) is rotatably connected to the base (1) and located at the lower end of the cutting cylinder (201). A locking rod (302) is fixedly installed on the upper end of the limiting plate (301). Limiting grooves (303) are opened on the left and right sides of the front end of the cutting cylinder (201).
5. An instrument hairspring trimming device according to claim 1 wherein, Also includes: A clamping assembly (4) is installed on the upper end of the base (1) and is used to clamp the hairspring.
6. An instrument hairspring trimming device according to claim 5, wherein, The clamping assembly (4) includes: A fixed column (401) is fixedly installed on the front and rear sides of the upper end of the base (1). A top plate (402) is fixedly installed on the upper end of the fixed column (401). A hydraulic rod (403) is fixedly installed on the lower end of the top plate (402). A pressure plate (404) is fixedly installed on the lower end of the hydraulic rod (403). A sponge pad (405) is glued to the lower end of the pressure plate (404).
7. An instrument hairspring trimming device according to claim 1 wherein, Also includes: The recycling component (5) is installed on the left and right sides of the upper end of the base (1) and is used to collect the debris.
8. An instrument hairspring trimming device according to claim 7, wherein, The recycling component (5) includes: A collection trough (501) is provided on the upper left and right sides of the base (1). A grid plate (502) is rotatably connected to the upper part of the collection trough (501). A storage box (503) is slidably connected to the inside of the collection trough (501). A stabilizing rod (504) is fixedly installed at the upper part of the storage box (503). A stop block (505) is rotatably connected to the upper part of the base (1) on the side of the collection trough (501) near the central axis.
Citation Information
Patent Citations
Stable instrument hairspring corner cutting device
CN215903560U