Disassembling and assembling sleeve punch for escapement fork shaft of watch

Abstract

The utility model provides a watch escapement fork shaft dismounting sleeve punch which sequentially comprises a punch pin and a punch pedestal from top to bottom, the punch pin comprises a punch rod and an ejector pin, the ejector pin is fixedly connected to the end, facing the punch pedestal, of the punch rod and used for clamping a fork shaft, one end of the punch pedestal is provided with a bearing table, the bearing table is used for placing a fork body, and the bearing table is axially provided with a blanking hole. The mounting and dismounting device for the escapement fork shaft has the advantages that the mounting and dismounting efficiency of the escapement fork shaft is improved, and the cost of a mounting and dismounting tool is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a watch maintenance tool, concretely relates to a watch pallet fork shaft dismounting and mounting punch. BACKGROUND

[0002] The pallet fork is a key component in the pallet fork mechanism, and is responsible for the actions of locking, transmitting and releasing. A pallet fork shaft is embedded in the center of the pallet fork, and the main components of the pallet fork shaft include a shaft and a body. During watch maintenance, the shaft is usually mounted on the body or dismounted from the body. The special equipment for dismounting and mounting the shaft on the market is complicated in the alignment process, resulting in low dismounting and mounting efficiency of the pallet fork shaft, and the production cost of the special equipment is high, which is difficult to be widely applied. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a watch pallet fork shaft dismounting and mounting punch to solve the problems of low dismounting and mounting efficiency of the pallet fork shaft and high cost of the dismounting and mounting tool.

[0004] In order to achieve the above-mentioned purpose, the utility model discloses a watch pallet fork shaft dismounting and mounting punch adopting the following technical scheme:

[0005] A watch pallet fork shaft dismounting and mounting punch includes a punch needle and a punch base in sequence from top to bottom. The punch needle includes a punch rod and a top needle. The top needle is fixedly connected to one end of the punch rod facing the punch base. The top needle is used for clamping the shaft. One end of the punch base is provided with a bearing table. The bearing table is used for placing the body. An axial bearing hole is arranged on the bearing table. The bearing hole is used for the shaft to pass through. The other end of the punch base is provided with a base.

[0006] As an optimization of the watch pallet fork shaft dismounting and mounting punch, the top needle includes a dismounting needle and an installation needle. An avoiding hole is arranged axially on the dismounting needle and the installation needle. The avoiding hole is used for the shaft tip to insert. A limiting hole is further arranged axially on the installation needle. The limiting hole is used for clamping the shaft. The diameter of the limiting hole is greater than that of the avoiding hole.

[0007] As an optimization of the watch pallet fork shaft dismounting and mounting punch, a side hole is transversely arranged on the side wall of the installation needle. The side hole is perpendicular to the avoiding hole. The side wall of the side hole is connected to the end of the avoiding hole.

[0008] As an optimization of the watch pallet fork shaft dismounting and mounting punch, the punch base is further provided with a center hole. The base is inserted into the center hole. The diameter of the punch base is greater than or equal to twice the diameter of the base.

[0009] As an optimization of the watch escapement fork shaft assembly and disassembly punch, a limiting platform is fixedly connected to one end of the base near the bearing platform, and the diameter of the limiting platform is larger than the diameter of the center hole.

[0010] As an optimization of the watch escapement fork shaft assembly and disassembly punch, the side wall of the bearing platform is provided with a tool hole, which is connected to the bottom of the blanking hole.

[0011] As an optimization of the watch escapement fork shaft assembly and disassembly punch, the diameter of the punch rod is larger than the diameter of the ejector pin, and a ramp is fixedly connected between the punch rod and the ejector pin.

[0012] As an optimization of the watch escapement fork shaft assembly and disassembly punch, the hardness of the punch is HRC62, and the hardness of the punch holder is HRC64.

[0013] Compared to existing technologies, the advantages of this invention are as follows: During the disassembly of the fork shaft, the punch pushes the fork shaft, separating it from the fork body placed on the punching platform; during the installation of the fork shaft, the punch clamps the fork shaft, aligning it with the central axis of the punching platform, and drives the punch rod close to the support table, aligning and embedding the fork shaft on the punch into the fork body on the punching platform. This punch set allows for simple and quick disassembly and installation of the fork shaft, improving efficiency. Furthermore, the punch set has a simple structure, is easy to carry, facilitates mass production, and has low production costs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of the watch escapement fork shaft assembly and disassembly punch according to an embodiment of this application;

[0016] Figure 2 This is a partial cross-sectional view of the watch escapement fork shaft assembly and disassembly punch according to an embodiment of this application;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0019] Figure 5 for Figure 2 A magnified view of point C in the middle.

[0020] In the figure: 1, punch pin; 11, punch rod; 12, ejector pin; 13, inclined platform; 2, punch pedestal; 21, bearing platform; 211, blanking hole; 212, tool hole; 22, base; 23, limiting platform; 3, dismounting pin; 4, mounting pin; 41, avoiding hole; 42, limiting hole; 43, side hole; 5, punch pedestal sleeve; 51, center hole. DETAILED DESCRIPTION

[0021] In order to make the technical scheme and advantages of the utility model clearer, the utility model and its beneficial effects will be further described in detail in combination with specific implementation manners and the drawings of the specification, but the implementation manners of the utility model are not limited to this.

[0022] In the description of the utility model, unless explicitly defined and limited, the terms "mounting", "connection", "connecting", "fixing" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the communication inside two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0023] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, and the mechanical parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection mode in the prior art, which will not be described in detail here.

[0024] The following will be described in detail in combination with the drawings Figures 1-5 The application will be further described in detail.

[0025] The application provides a watch escapement fork shaft dismounting and mounting punch, which adopts the following technical scheme:

[0026] Refer to Figure 1, the punch pin 1 and the punch pedestal 2 are vertically arranged in sequence from top to bottom, the punch pin 1 and the punch pedestal 2 are made of special high-hardness and high-strength materials, specifically, the material of the punch pin 1 is SKD11 (high-carbon and high-chromium alloy tool steel), the surface hardness of the punch pin 1 is HRC62, the material of the punch pedestal 2 is SKH59 (molybdenum-based high-carbon and high-chromium super-hard high-speed tool steel), and the surface hardness of the punch pedestal 2 is HRC64. The punch pin 1 is in the shape of a long rod, and the punch pin 1 includes a punch rod 11 and a top pin 12, the punch rod 11 is used as a force applying part for convenient holding or tool clamping, and has a relatively long rod length, specifically, in the embodiment, the length of the punch rod 11 is 80mm, and the diameter is 4.7mm. The top pin 12 is integrally formed at one end of the punch rod 11 towards the punch pedestal 2, and the top pin 12 is used as a driving part for resisting the movement of the fork shaft, specifically, the diameter of the top pin 12 ranges from 0.28mm to 0.6mm. Further, the diameter of the punch rod 11 is greater than the diameter of the top pin 12, and a bevel table 13 is integrally connected between the punch rod 11 and the top pin 12, the bevel table 13 can smoothly transition the large diameter of the punch rod 11 to the small diameter of the top pin 12, which is conducive to reducing the collision damage of the punch pin 1.

[0027] With reference to Figure 1 , Figure 2 and Figure 3 , the top end of the punch pedestal 2 is integrally formed with a bearing table 21, the bearing table 21 is used for bearing the fork body part of the escapement fork, and a blanking hole 211 is axially formed on the bearing table 21, the diameter of the blanking hole 211 is greater than the diameter of the fork shaft, specifically, the diameter of the fork shaft of the escapement fork on the market is 0.375mm, and in the embodiment, the diameter of the blanking hole 211 is 0.39mm, and the fork shaft can freely fall in the blanking hole 211. The bottom end of the punch pedestal 2 is integrally formed with a pedestal 22, which is used as a supporting part of the punch pedestal 2, specifically, the diameter of the bottom end is 4.7mm, which can be stably placed on the surface of the workbench, reducing the shaking of the fork shaft borne by the bearing table 21, and facilitating the alignment of the punch pin 1.

[0028] When the fork shaft needs to be disassembled, the fork body and the fork shaft combination of the escapement fork are placed on the bearing table 21, the punch pin 1 is driven to move along the axis of the blanking hole 211, the top pin 12 drives the fork shaft to move downward, the bearing table 21 limits the movement of the fork body, so that the fork shaft is separated from the fork body, and the fork shaft falls into the blanking hole 211, which can complete the disassembly of the escapement fork shaft at one time, thereby improving the installation efficiency of the escapement fork shaft. When the escapement fork shaft needs to be installed, the fork body of the escapement fork is placed on the bearing table 21, and the fork shaft is fixedly installed on the punch pin 1, the punch pin 1 is driven to move along the axis of the blanking hole 211, the top pin 12 drives the fork shaft to move downward, so that the fork shaft is embedded in the mounting hole of the fork body, and is fixedly connected through the tolerance fit between the fork shaft and the fork body, which can complete the installation of the escapement fork shaft at one time, thereby improving the installation efficiency of the escapement fork shaft.

[0029] In the preferred embodiment of the present application, referring to Figure 1 , Figure 2 , Figure 4 and Figure 5 , the ejector pin 12 is divided into the dismounting pin 3 and the mounting pin 4 according to the functions and structures, and the dismounting pin 3 and the mounting pin 4 are both provided with the avoiding hole 41 in the axial direction, the diameter of the avoiding hole 41 is 0.15mm, the avoiding hole 41 is used for inserting the shaft tip of the fork shaft, and the shaft tip can be protected to reduce the risk of breaking. Further, only the avoiding hole 41 is provided on the dismounting pin 3, and the limiting hole 42 is further provided in the axial direction on the end face of the mounting pin 4, the avoiding hole 41 is further extended in the direction of the punch rod 11 from the bottom end of the limiting hole 42, the diameter of the limiting hole 42 is larger than the diameter of the avoiding hole 41, in the embodiment, the diameter of the limiting hole 42 is 0.375mm, the limiting hole 42 is used for inserting the shaft body of the fork shaft, and the fork shaft can be limited to avoid shaking, which facilitates alignment to improve the accuracy of alignment. In the actual application process, the dismounting and mounting process of the fork shaft is as follows: when the escapement fork shaft needs to be dismounted, the shaft tip of the fork shaft is limited to be embedded in the avoiding hole 41 of the dismounting pin 3, the dismounting pin 3 is driven to move along the axis of the blanking hole 211, the shaking of the fork shaft is reduced, the fork shaft is separated from the fork body, and thus the dismounting step of the escapement fork shaft is completed; when the escapement fork shaft needs to be mounted, the fork shaft is mounted on the mounting pin 4, the shaft body of the fork shaft is mounted in the limiting hole 42, and the shaft tip of the fork shaft enters the avoiding hole 41, the fork shaft can be embedded and fixed on the mounting pin 4, the fork shaft is limited, the mounting pin 4 is driven to move coaxially along the axis of the blanking hole 211, the alignment of the punch pin 1 and the punch seat 2 is adjusted, the fork shaft can be installed in place at one time, and the installation efficiency of the fork shaft is improved.

[0030] Further, referring to Figure 3 , the side hole 43 is transversely provided through the side wall of the mounting pin 4, the direction of the side hole 43 is perpendicular to the direction of the avoiding hole 41, the side wall of the side hole 43 is communicated with the end of the avoiding hole 41, and both ends of the avoiding hole 41 are open. When there is foreign matter blocking the avoiding hole 41 of the mounting pin 4, the foreign matter is pushed from the avoiding hole 41 to the side hole 43, the foreign matter is taken out through the side hole 43, the avoiding hole 41 of the mounting pin 4 is kept unblocked, the fork shaft can be embedded in the limiting hole 42 to a sufficient depth, and the limiting effect of the limiting hole 42 on the fork shaft is improved.

[0031] In the preferred embodiment of the present application, referring to Figure 1, the watch escapement axle dismounting and mounting punch still comprises a punch stand sleeve 5, the punch stand sleeve 5 is cylindrical, the axis of the punch stand sleeve 5 is axially provided with a central hole 51, the diameter of the central hole 51 is equal to the diameter of the base 22, the base 22 is inserted into the central hole 51, and the diameter of the punch stand sleeve 5 is equal to twice the diameter of the base 22, in the embodiment, the diameter of the base 22 is 4.7mm, the diameter of the central hole 51 is 4.7mm, and the diameter of the punch stand sleeve 5 is 20mm, the contact area between the punch stand 2 and the workbench is increased by the punch stand sleeve 5, the stability of the punch stand 2 can be further improved, the shaking of the punch stand 2 is reduced, and the alignment accuracy is improved.

[0032] Further, referring to Figure 1 , the base 22 is integrally formed with a limiting table 23 close to one end of the bearing table 21, the diameter of the limiting table 23 is greater than the diameter of the central hole 51, in the embodiment, the diameter of the limiting table 23 is 5.9mm, the longitudinal movement of the punch stand 2 can be limited by the limiting table 23, the influence of the longitudinal jumping on the dismounting or mounting of the axle is reduced, and the alignment accuracy of the axle is improved, in addition, the limiting table 23 can conveniently assist the operator to hold the punch stand 2, and the appearance and practicability of the punch stand 2 are improved.

[0033] In the preferred embodiment of the application, referring to Figure 3 , the sidewall of the bearing table 21 is provided with a tool hole 212, and the sidewall of the tool hole 212 is communicated with the bottom of the blanking hole 211, on the one hand, the tool hole 212 can conveniently position and hold the jig during the production of the punch stand 2, and the machining precision of the punch stand 2 is improved, and on the other hand, the tool hole 212 is communicated with the blanking hole 211, and the blanking hole 211 can be conveniently cleaned, and the hole is prevented from being blocked.

[0034] According to the disclosure and teaching of the above description, the person skilled in the art of the utility model can also change and modify the above embodiment. Therefore, the utility model is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the person skilled in the art on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in the specification, these terms are only for convenience of description, and do not constitute any limitation on the utility model.

Claims

1. A watch pallet shaft dismounting and mounting bushing, characterized in that, From top to bottom, it sequentially comprises a punch pin (1) and a punch pedestal (2), the punch pin (1) comprises a punch rod (11) and a top pin (12), the top pin (12) is fixedly connected to one end of the punch rod (11) towards the punch pedestal (2), the top pin (12) is used for clamping a fork shaft, one end of the punch pedestal (2) is provided with a bearing table (21), the bearing table (21) is used for placing a fork body, an axial blanking hole (211) is arranged on the bearing table (21), the blanking hole (211) is used for the fork shaft to pass through, the other end of the punch pedestal (2) is provided with a base (22).

2. A watch pallet fork dismounting and reassembling punch according to claim 1, characterized in that, The top pin (12) comprises a dismounting pin (3) and a mounting pin (4), the dismounting pin (3) and the mounting pin (4) are both provided with an avoiding hole (41) in the axial direction, the avoiding hole (41) is used for the shaft tip to insert; the mounting pin (4) is further provided with a limiting hole (42) in the axial direction, the limiting hole (42) is used for clamping the fork shaft, the diameter of the limiting hole (42) is greater than that of the avoiding hole (41).

3. A watch pallet fork dismounting and reassembling punch according to claim 2, characterized in that, The side wall of the mounting pin (4) is transversely provided with a side limiting hole (43), the side limiting hole (43) is perpendicular to the avoiding hole (41), the side wall of the side limiting hole (43) is communicated with the end of the avoiding hole (41).

4. A watch pallet fork dismounting and reassembling punch according to claim 1, characterized in that, It further comprises a punch pedestal sleeve (5), the punch pedestal sleeve (5) is provided with a central hole (51) in the axial direction, the base (22) is inserted into the central hole (51), the diameter of the punch pedestal sleeve (5) is greater than or equal to twice the diameter of the base (22).

5. A watch pallet fork dismounting and reassembling punch according to claim 4, characterized in that, The base (22) is fixedly connected with a limiting table (23) near one end of the bearing table (21), the diameter of the limiting table (23) is greater than that of the central hole (51).

6. A watch pallet fork dismounting and reassembling punch according to claim 1, characterized in that, The side wall of the bearing table (21) is provided with a tool hole (212), the tool hole (212) is communicated with the bottom of the blanking hole (211).

7. A watch pallet fork dismounting and reassembling punch according to claim 1, characterized in that, The diameter of the punch rod (11) is greater than that of the top pin (12), and the punch rod (11) and the top pin (12) are fixedly connected with an inclined table (13).

8. A watch pallet fork dismounting and reassembling punch according to claim 1, characterized in that, The hardness of the punch pin (1) is HRC62, and the hardness of the punch pedestal (2) is HRC64.

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