A milling cutter

Abstract

The utility model discloses a milling cutter relates to milling cutter field, including milling cutter body, the sliding slot is opened in the milling cutter body, the locating column is slidly connected in the sliding slot, the cavity is opened in the milling cutter body, the elastic push assembly is installed in the cavity, is used for pushing the locating column, makes the locating column end portion to pass through the cutter head of milling cutter body. Advantageous effect lies in: through the locating column and inserts the observation hole, fills the observation hole through the locating column, can avoid the observation hole and be damaged by the milling cutter body, with the gradually disassembling battery of milling cutter body, the locating column is inwards in the milling cutter body, and the locating column can continue and insert the observation hole, and the protection effect of this milling cutter is ensured.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter technology, and specifically to a milling cutter. Background Technology

[0002] During lithium battery recycling or cell repair, the tabs must be disassembled precisely to avoid the central part of the cell, such as the observation hole and the internal electrode connection. This area is structurally fragile. Most existing milling cutters are integral rigid structures. When cutting, the tip of the cutter directly presses against the surface of the cell. If there is a pre-machined hole in the center of the cell, such as an observation hole, the cutter may insert into the hole, causing scratches on the inner wall or cracking of the material around the hole, leading to electrolyte leakage or internal short circuit risk.

[0003] In addition, if the relative position of the tool and the battery cell cannot be precisely fixed during the disassembly process, it is easy to cause excessive grinding of the tab, damage the tab structure, or even damage the internal components of the battery cell, reducing the safety and lifespan of the battery. Utility Model Content

[0004] The purpose of this utility model is to provide a milling cutter to solve the above-mentioned problems, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This utility model provides a milling cutter, including a milling cutter body, a groove is formed in the milling cutter body, a positioning pin is slidably connected in the groove, a cavity is formed in the milling cutter body, and an elastic pushing component is installed in the cavity to push the positioning pin so that the end of the positioning pin passes through the cutter head of the milling cutter body.

[0007] Using the above-mentioned milling cutter, the milling cutter body is mounted on the drilling machine, and the positioning pin is aligned with the observation hole of the battery cell. As the milling cutter body continues to approach the observation hole, the positioning pin is inserted into the observation hole first. By filling the observation hole with the positioning pin, the observation hole can be prevented from being damaged by the milling cutter body. As the milling cutter body gradually disassembles the battery cell, the positioning pin retracts into the milling cutter body, and the positioning pin can be continuously connected to the observation hole.

[0008] Meanwhile, when disassembling the electrode tab, inserting the positioning pin into the observation hole can also locate the relative position of the milling cutter body and the battery cell, avoiding excessive grinding of the electrode tab.

[0009] Preferably, the groove and the cavity are both arranged along the axis of the milling cutter body, with one end of the groove penetrating the milling cutter body and the other end communicating with the cavity, and the end of the cavity away from the groove penetrating the end of the milling cutter body away from the milling cutter head.

[0010] Preferably, the diameter of the cavity is larger than the diameter of the groove.

[0011] Preferably, the elastic pushing component includes a fixed column, which is clearance-fitted with the inner wall of the cavity, and is fixedly connected to a positioning column. A plug is threaded to the end of the cavity away from the fixed column. A spring is placed inside the cavity to push the positioning column, and a plane bearing is placed between the spring and the fixed column.

[0012] Preferably, the plug has a groove.

[0013] Preferably, the groove is an internal hexagonal groove or a screwdriver groove.

[0014] Preferably, one end of the plug inserted into the cavity is designed to be tapered, and the end of the spring contacts the tapered surface of the plug.

[0015] Preferably, when the fixing post contacts the end face of the cavity, the end of the positioning post protrudes through the cutting head of the milling cutter body.

[0016] Preferably, the two sides of the planar bearing are in contact with the fixed post and the end of the spring, respectively.

[0017] Preferably, the spring is fitted with a clearance fit to the inner wall of the cavity.

[0018] The beneficial effects are:

[0019] 1. By inserting the positioning pin into the observation hole and filling the observation hole with the positioning pin, damage to the observation hole by the milling cutter body can be avoided. As the battery cell is gradually disassembled from the milling cutter body, the positioning pin retracts into the milling cutter body. The positioning pin can be continuously inserted into the observation hole to ensure the protective effect of the milling cutter.

[0020] 2. The elastic push assembly is easy to install. The positioning column, plane bearing, spring and plug are installed in the cavity in sequence, and the structure is simple and stable.

[0021] 3. After the positioning pin is inserted into the observation hole, it not only protects the hole structure, but also accurately fixes the relative position of the milling cutter and the battery cell, preventing the tool from shifting or shaking, avoiding excessive grinding of the tabs, and ensuring disassembly accuracy. Attached Figure Description

[0022] 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.

[0023] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0024] Figure 2This is a front view structural diagram of the present invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 4 This is a front view cross-sectional structural diagram of the present invention;

[0027] Figure 5 This is a schematic diagram of the front cross-sectional structure of the cavity of this utility model.

[0028] The annotations in the attached figures are explained as follows:

[0029] 1. Milling cutter body; 2. Slide groove; 3. Cavity; 4. Positioning pin; 5. Elastic push assembly; 6. Fixing pin; 7. Planar bearing; 8. Spring; 9. Plug; 10. Groove. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] See Figures 1-5 As shown, this utility model provides a milling cutter, including a milling cutter body 1, a groove 2 is provided in the milling cutter body 1, a positioning post 4 is slidably connected in the groove 2, a cavity 3 is provided in the milling cutter body 1, and an elastic pushing component 5 is installed in the cavity 3 for pushing the positioning post 4 so that the end of the positioning post 4 passes through the cutter head of the milling cutter body 1.

[0032] As an optional implementation, both the groove 2 and the cavity 3 are arranged along the axis of the milling cutter body 1, and one end of the groove 2 passes through the milling cutter body 1, while the other end is connected to the cavity 3. The end of the cavity 3 away from the groove 2 passes through the end of the milling cutter body 1 away from the milling cutter head.

[0033] The diameter of cavity 3 is larger than the diameter of slide groove 2. The maximum extension length of positioning post 4 can be limited by the cooperation of fixing post 6 and cavity 3.

[0034] The elastic pushing component 5 includes a fixed post 6, which is clearance-fitted with the inner wall of the cavity 3. The fixed post 6 is fixedly connected to the positioning post 4. A plug 9 is threadedly connected to the end of the cavity 3 away from the fixed post 6. A spring 8 is placed inside the cavity 3 to push the positioning post 4. A plane bearing 7 is placed between the spring 8 and the fixed post 6.

[0035] The elastic push assembly 5 is easy to install. The positioning pin 4, the plane bearing 7, the spring 8 and the plug 9 are installed in the cavity 3 in sequence. The positioning pin 4 is pushed by the spring 8 so that the positioning pin 4 is placed outside the milling cutter body 1.

[0036] During the production process, such as when drilling holes in the battery cell tabs, the observation holes can assist in positioning. For example, in a device for precise drilling and positioning of lithium-ion battery cells, the observation holes on the punch guide plate can help the operator accurately move the tabs onto the positioning and orientation grooves on the device base, ensuring precise positioning of the battery cell during the punching process.

[0037] When disassembling the electrode tab, the positioning post 4 can be inserted into the observation hole to locate the relative position of the tool and the battery cell, avoiding excessive grinding of the electrode tab.

[0038] The plug 9 has a groove 10.

[0039] The groove 10 adopts an internal hexagonal groove or a screwdriver groove, and the groove 10 is designed to facilitate the installation and removal of the plug 9.

[0040] The end of the plug 9 inserted into the cavity 3 is designed to be tapered, and the end of the spring contacts the tapered surface of the plug 9.

[0041] When the fixed post 6 contacts the end face of the cavity 3, the end of the positioning post 4 passes through the cutter head of the milling cutter body 1.

[0042] The two sides of the planar bearing 7 are in contact with the fixed post 6 and the end of the spring 8, respectively.

[0043] The planar bearing 7 between the fixed column 6 and the spring 8 reduces rotational friction, making the positioning column 4 move more smoothly in the axial direction and further improving positioning stability.

[0044] The spring 8 is fitted with the inner wall of the cavity 3 with a clearance. This design can keep the spring 8 stable and prevent the spring 8 from bending.

[0045] Using the above structure, the milling cutter body 1 is installed on the drilling machine, and the positioning pin 4 is aligned with the observation hole of the battery cell. As the milling cutter body 1 continues to approach the observation hole, the positioning pin 4 is inserted into the observation hole first. By filling the observation hole with the positioning pin 4, the observation hole can be prevented from being damaged by the milling cutter body 1. As the milling cutter body 1 gradually disassembles the battery cell, the positioning pin 4 retracts into the milling cutter body 1, and the positioning pin 4 can be continuously connected to the observation hole.

[0046] Meanwhile, when disassembling the electrode tab, the positioning pin 4 can be inserted into the observation hole to locate the relative position of the milling cutter body 1 and the battery cell, avoiding excessive grinding of the electrode tab.

[0047] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A milling cutter, characterized in that: The device includes a milling cutter body (1), a groove (2) is provided inside the milling cutter body (1), a positioning pin (4) is slidably connected inside the groove (2), a cavity (3) is provided inside the milling cutter body (1), and an elastic pushing component (5) is installed inside the cavity (3) to push the positioning pin (4) so ​​that the end of the positioning pin (4) passes through the cutter head of the milling cutter body (1).

2. The milling cutter according to claim 1, characterized in that: The groove (2) and the cavity (3) are both arranged along the axis of the milling cutter body (1), and one end of the groove (2) passes through the milling cutter body (1) and the other end is connected to the cavity (3). The end of the cavity (3) away from the groove (2) passes through the end of the milling cutter body (1) away from the milling cutter body (1) and away from the cutter head.

3. The milling cutter according to claim 1, characterized in that: The diameter of the cavity (3) is larger than the diameter of the groove (2).

4. A milling cutter according to claim 2, characterized in that: The elastic pushing component (5) includes a fixed post (6), which is in clearance fit with the inner wall of the cavity (3). The fixed post (6) is fixedly connected to the positioning post (4). A plug (9) is threadedly connected to one end of the cavity (3) away from the fixed post (6). A spring (8) is placed inside the cavity (3) to push the positioning post (4). A plane bearing (7) is placed between the spring (8) and the fixed post (6).

5. A milling cutter according to claim 4, characterized in that: The plug (9) has a groove (10).

6. A milling cutter according to claim 5, characterized in that: The groove (10) is an internal hexagonal groove or a screwdriver groove.

7. A milling cutter according to claim 4, characterized in that: The end of the plug (9) inserted into the cavity (3) is designed to be tapered, and the end of the spring contacts the tapered surface of the plug (9).

8. A milling cutter according to claim 4, characterized in that: When the fixed post (6) contacts the end face of the cavity (3), the end of the positioning post (4) passes through the cutter head of the milling cutter body (1).

9. A milling cutter according to claim 4, characterized in that: The two sides of the planar bearing (7) are in contact with the fixed column (6) and the end of the spring (8), respectively.

10. A milling cutter according to claim 4, characterized in that: The spring (8) is fitted with the inner wall of the cavity (3) with a clearance.

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