Milling cutter and machining equipment

Abstract

The utility model provides a milling cutter and machining equipment, and relates to the technical field of machining. The milling cutter comprises a cutter handle and at least two cutter arms, and the at least two cutter arms are connected to the axial end part of the cutter handle; cutter heads are arranged at the ends, deviating from the cutter handles, of the cutter arms; when the milling cutter rotates, the cutter heads of different cutter arms have the same cutting direction; the at least two tool arms are arranged at intervals in the circumferential direction of the tool handle, so that an avoiding area is formed between the tool arms; and the avoiding area is configured to avoid the cap when the milling cutter cuts. The battery cap can be rapidly positioned and machined, cutting operation can be completed only through axial movement, the cutting frequency of repeated machining is reduced, the cutting efficiency is improved, and the welding requirement of the battery cap is met.

Description

Technical Field

[0001] This application relates to the technical field of machining equipment, and particularly to a milling cutter and a machining equipment. Background Art

[0002] When a milling cutter is used to machine the cap of a battery, it mainly plays a role in cutting and shaping. Its cutting edge can efficiently remove materials to make the materials reach the required shape and size.

[0003] In related technologies, a flat-bottom milling cutter is generally used. Specifically, when this tool is used to machine the cap of a battery, a numerical control machine tool needs to be programmed to machine the cap of the battery. However, in the above machining method, since the heights of the caps of the batteries are not uniform, the numerical control machine tool cannot ensure the machining depth of each battery when machining each battery, and cannot well meet the process requirements of welding. Summary of the Utility Model

[0004] In view of the above problems, the embodiments of this application provide a milling cutter and a machining equipment, which can quickly position and machine the cap of a battery. Only axial movement is required to complete the cutting operation, reducing the cutting times of repeated machining, improving the cutting efficiency, and meeting the welding requirements of the cap of the battery.

[0005] To achieve the above object, this application provides the following technical solutions:

[0006] The first aspect of the embodiments of this application provides a milling cutter for cutting the cap of a battery. The milling cutter includes a tool shank and at least two tool arms. At least two of the tool arms are connected to the axial end of the tool shank; one end of each tool arm facing away from the tool shank has a cutting head; when the milling cutter rotates, the cutting heads of different tool arms have the same cutting direction; at least two of the tool arms are circumferentially spaced around the tool shank so as to form an avoidance area between the tool arms; the avoidance area is configured to avoid the cap when the milling cutter is cutting.

[0007] In an implementable embodiment, the tool arm includes a connecting portion, the connecting portion is connected to the axial end face of the tool shank, and the cutting head is connected to one end of the connecting portion facing away from the tool shank; one end of the connecting portion connected to the tool shank has a first strengthening portion, and the first strengthening portion is located on the side of the connecting portion facing the axis of the tool shank.

[0008] In an implementable embodiment, a second strengthening portion is provided on one or both sides of the connecting portion facing and / or away from the cutting direction of the tool arm; the thickness of the tool arm gradually increases from the connecting portion to the tool shank at the position of the second strengthening portion.

[0009] In an implementable embodiment, a chip evacuation relief groove is provided on the side of the cutting head facing the axis of the tool shank.

[0010] In an implementable embodiment, one side of the chip evacuation relief groove facing the cutting direction of the tool tip has a first arc line, and the other side of the chip evacuation relief groove facing away from the cutting direction of the tool tip has a second arc line, and the first arc line and the second arc line are tangent to each other.

[0011] In an implementable embodiment, one side of the tool tip facing away from its cutting direction has an arc surface, so that an avoidance area is formed on one side of the tool tip facing away from its cutting direction.

[0012] In an implementable embodiment, one side of the tool tip facing its cutting direction has a cutting edge, and the slotting angle of the cutting edge is 20° - 35°.

[0013] In an implementable embodiment, a chip evacuation groove is provided on one side of the tool tip facing its cutting direction.

[0014] In an implementable embodiment, an avoidance hole is provided at the axial end of the tool shank, and the avoidance hole is configured to accommodate the cap during the cutting of the milling cutter.

[0015] In an implementable embodiment, the tool arm and the tool shank are integrally formed.

[0016] In an implementable embodiment, two tool arms are provided at both axial ends of the tool shank, and the two tool arms are centrosymmetric with respect to the axis center of the tool shank.

[0017] In a second aspect of the embodiments of the present application, a processing device is provided. The processing device includes a device main body and a milling cutter. The device main body has a rotating spindle, and the milling cutter is coaxially and fixedly connected to the rotating spindle; the processing device is configured to cut the cap of the battery by rotating the milling cutter and moving axially.

[0018] The embodiments of the present application provide a milling cutter and a processing device. The milling cutter includes a tool shank and at least two tool arms. The at least two tool arms are arranged at intervals around the axial end of the tool shank, so that an avoidance area is formed between the tool arms; the avoidance area is configured to avoid the cap during the cutting of the milling cutter. In this way, when the milling cutter rotates, an avoidance area can be formed in the center, which helps to avoid the cap of the battery. Moreover, in the present application, only the axial movement of the milling cutter is required to complete the cutting operation, which helps to quickly position and process the cap of the battery, reduce the number of cutting times of repeated processing, improve the cutting efficiency, and meet the welding requirements of the cap of the battery; in addition, different models of batteries can be compatible, and the manufacturing cost is relatively low, which is convenient for popularization and use. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the mating structure of the milling cutter and the battery cap provided by the embodiment of the present application;

[0021] Figure 2 Axonometric view of the milling cutter provided by the embodiment of the present application;

[0022] Figure 3 Front view of the milling cutter provided by the embodiment of the present application from one perspective;

[0023] Figure 4 Front view of the milling cutter provided by the embodiment of the present application from another perspective;

[0024] Figure 5 Front view of the milling cutter provided by the embodiment of the present application from yet another perspective;

[0025] Figure 6 Side view of the milling cutter provided by the embodiment of the present application;

[0026] Figure 7 Top view of the milling cutter provided by the embodiment of the present application.

[0027] Explanation of reference numerals:

[0028] 100 - Milling cutter;

[0029] 110 - Tool shank; 111 - Avoidance hole; 120 - Cutter arm;

[0030] 121 - Connection part; 122 - Cutting head; 1221 - Relief area;

[0031] 1222 - Chip evacuation groove; 130 - Avoidance area; 140 - First strengthening part;

[0032] 150 - Second strengthening part; 160 - Chip evacuation relief groove; 161 - First arc line;

[0033] 162 - Second arc line;

[0034] 200 - Battery; 210 - Cap. Detailed implementation manners

[0035] The cap of the battery is a structural component installed at the top of the battery, used to cover and protect the battery from the external environment and potential damage, and has the functions of providing battery sealing, temperature protection, safety valves, and positive or negative conductive terminals. Among them, the manufacturing process of the cap involves precise processes to ensure the safety performance and stability of the battery.

[0036] As a commonly used machining tool, the milling cutter can achieve precise machining of the battery cap to ensure that its size and shape meet the design requirements. In actual products, due to the inconsistent position heights of the battery caps, during the numerical control machining of each battery, it is not possible to well guarantee the machining depth of each battery and meet the welding process requirements; in addition, when measuring and machining the depth of a single battery, it is necessary to adjust the XYZ axes, resulting in low machining efficiency, cumbersome machining procedures, inability to machine quickly and effectively, and inability to guarantee the machining depth of each battery.

[0037] In view of the above technical problems, the embodiments of the present application provide a milling cutter and a machining device. The milling cutter includes a tool shank and at least two cutter arms. The at least two cutter arms are arranged at intervals around the axial end of the tool shank so as to form an avoidance area between the cutter arms; the avoidance area is configured to avoid the cap during the cutting of the milling cutter. In this way, when the milling cutter rotates, an avoidance area can be formed at the center, which helps to avoid the cap of the battery. Moreover, in the present application, only the axial movement of the milling cutter is required to complete the cutting operation, which helps to quickly position and machine the cap of the battery, reduce the cutting times of repeated machining, improve the cutting efficiency, and meet the welding requirements of the cap of the battery; in addition, it can be compatible with different models of batteries, with low manufacturing costs and is convenient for popularization and use.

[0038] To make the purpose, technical solution, and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals represent the same or similar components or components with the same or similar functions from beginning to end. The described embodiments are some, but not all, of the embodiments of the present application. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application and should not be construed as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0039] The embodiments of the present application provide a machining device. In this embodiment, there is no limitation on the machining object of the machining device. Exemplarily, in this embodiment, with reference to Figure 1 as shown, mainly taking the machining of the cap 210 of the battery 200 by the machining device as an example for explanation.

[0040] In the embodiments of the present application, the processing equipment includes a device main body and a milling cutter 100. Among them, the structure of the device main body is not limited. Exemplarily, the device main body in this embodiment can be a machine tool tool holder.

[0041] Among them, the device main body has a rotating spindle, and the milling cutter 100 is coaxially and fixedly connected to the rotating spindle; the processing equipment is configured to cut the cap 210 of the battery 200 by rotating the milling cutter 100 and moving axially. Exemplarily, the device main body can drive the milling cutter 100 clockwise to cut the cap 210 of the battery 200; or, the device main body can drive the milling cutter 100 counterclockwise to cut the cap 210 of the battery 200. This embodiment does not limit this.

[0042] In practical applications, the milling cutter 100 is loaded into the machine tool tool holder and locked and fixedly connected. The machine tool spindle rotates clockwise to drive the milling cutter 100 to cut the cap 210 of the battery 200. Just pull the machine tool Z-axis handle up and down to process the product. The Z-axis handle controls the milling cutter 100 to cut the cap 210 of the battery 200 until the cap 210 falls off, and helps to finish the surface of the welding edge of the cap 210 at one time, meeting the process requirements for the secondary welding of the cap 210.

[0043] Refer to Figures 2 to 7 As shown, the milling cutter 100 includes a tool shank 110 and at least two cutter arms 120, and the at least two cutter arms 120 are connected to the axial end of the tool shank 110. Among them, the number of the cutter arms 120 is not limited. Exemplarily, the number of the cutter arms 120 can be two, three or more. This embodiment does not limit this, and can be specifically set according to actual needs.

[0044] In the embodiments of the present application, the connection manner between the tool shank 110 and the cutter arms 120 is not limited. Exemplarily, the cutter arms 120 and the tool shank 110 can be integrally formed parts. In this way, it helps to reduce the connecting parts between the tool shank 110 and the cutter arms 120, simplifies the assembly steps of the milling cutter 100, and helps to enhance the structural strength of the milling cutter 100, ensuring the integrity and stability of the milling cutter 100. Or, the cutter arms 120 and the tool shank 110 can be split. For example, the cutter arms 120 and the tool shank 110 can be locked by screws. In this way, when replacing, only the cutter arms 120 can be replaced without replacing the tool shank 110, which is easy to repair and replace and helps to improve production efficiency.

[0045] In this embodiment, the case where the cutter arms 120 and the tool shank 110 are integrally formed is mainly taken as an example for description.

[0046] In the embodiment of the present application, there is no limitation on the material of the knife handle 110 and the knife arm 120. For example, the knife arm 120 and the knife handle 110 may be made of white steel, which has the advantages of good hardness, low price, wear resistance and long service life, so that the knife handle 110 and the knife arm 120 can resist wear and deformation and maintain sharp cutting performance. In addition, the white steel knife handle 110 has good toughness, can maintain its shape and performance when subjected to impact or pressure, and is not easy to break or deform.

[0047] In the present application, refer to Figures 2 to 6 As shown, the ends of the blade arms 120 facing away from the blade handle 110 are provided with a blade head 122. When the milling cutter 100 rotates, the blade heads 122 of different blade arms 120 have the same cutting direction. It can be understood that the milling cutter 100 cuts the cap 210 through the blade heads 122. Among them, the blade heads 122 have the same cutting direction, so that the arrangement and movement of the blade heads 122 are optimized, so that more debris can be taken away during cutting, the cutting resistance is reduced, thereby improving the cutting efficiency and reducing the material consumption.

[0048] In the embodiment of the present application, at least two blade arms 120 are arranged at intervals around the axial end of the blade handle 110. In this way, multiple blade heads 122 cut simultaneously. During the cutting rotation process, an avoidance zone 130 can be formed at the center position of the multiple blade arms 120, thereby helping to avoid the battery 200 cap 210 and avoid mutual interference with the cap 210, thereby maximizing the best cutting effect.

[0049] In addition, in the embodiment of the present application, there is no limitation on the shape of the milling cutter 100. For example, the milling cutter 100 in the present embodiment may be H-shaped. In this way, it is helpful to quickly locate the cap 210 of the battery 200 for processing, improve the processing efficiency, and help to be compatible with different models of batteries 200, with low manufacturing cost and convenient for promotion and utilization, and only needs to replace the milling cutter 100 of different diameters.

[0050] Specifically, two blade arms 120 are provided at both axial ends of the tool handle 110, and the two blade arms 120 are symmetrical with respect to the axis center of the tool handle 110. In this way, both ends of the milling cutter 100 can be used or replaced, thereby maximizing the processing efficiency and also helping to reduce the number of times the milling cutter 100 needs to be repaired.

[0051] Therefore, the milling cutter 100 provided in this embodiment helps to quickly position and process the cap 210 of the battery 200, reduce the number of repeated cutting times, improve cutting efficiency, and meet the welding requirements of the cap 210 of the battery 200; in addition, it can be compatible with different models of batteries 200, has a low manufacturing cost, and is easy to promote and use.

[0052] In one possible implementation, referring to Figures 2 to 5As shown, the tool arm 120 may include a connecting portion 121, and the connecting portion 121 is connected to the end face of the tool shank 110 in the axial direction. The tool tip 122 is connected to one end of the connecting portion 121 that is away from the tool shank 110. In this way, the connecting portion 121 helps to improve the connection strength between the tool arm 120 and the tool shank 110. At the same time, as a connection carrier between the tool shank 110 and the tool tip 122, the connecting portion 121 helps to bear and transmit the cutting force and cutting torque, so as to complete the cutting work efficiently while ensuring the machining quality and safety. Among them, the size, shape, etc. of the connecting portion 121 are not limited, and can be specifically set according to actual needs.

[0053] In the embodiment of the present application, with reference to Figure 3 As shown, one end of the connecting portion 121 connected to the tool shank 110 may have a first strengthening portion 140, and the first strengthening portion 140 is located on the side of the connecting portion 121 facing the axis of the tool shank 110. In this way, the design of the first strengthening portion 140 is crucial for ensuring high-precision cutting machining, maximizing the stability and firmness of the connection between the tool tip 122 and the tool shank 110, and helping to enhance the performance and durability of the milling cutter 100.

[0054] Among them, the shape of the first strengthening portion 140 is not limited. Exemplarily, the first strengthening portion 140 may be an arc structure. In this way, it helps to reduce stress concentration, thereby enhancing the durability and service life of the milling cutter 100. In addition, this design can better distribute and disperse the forces generated during the cutting process, reducing the risk of fracture or deformation caused by stress concentration, and ensuring that the milling cutter 100 can still maintain stable and reliable performance under high-speed cutting or heavy cutting conditions.

[0055] Among them, in this embodiment, the first strengthening portion 140 is a rigid strengthening inside the tool arm 120.

[0056] In an implementable embodiment, with reference to Figure 6 As shown, in order to further enhance the structural strength of the milling cutter 100, a second strengthening portion 150 may also be included. Among them, the second strengthening portion 150 may be provided on the side of the connecting portion 121 facing the cutting direction of the tool arm 120; or the second strengthening portion 150 may be provided on the side of the connecting portion 121 away from the cutting direction of the tool arm 120. This embodiment does not limit this.

[0057] Among them, in this embodiment, the second strengthening portion 150 is a front and rear rigid strengthening of the tool arm 120, and the thickness of the tool arm 120 gradually increases from the connecting portion 121 to the tool shank 110 at the position of the second strengthening portion 150. In this way, the stability and firmness of the tool arm 120 are maximized, and it helps to enhance the performance and durability of the milling cutter 100.

[0058] There is no limitation on the shape of the second reinforcement portion 150. For example, the second reinforcement portion 150 may also be an arc structure, which also helps to reduce the risk of fracture or deformation caused by stress concentration, and ensures that the milling cutter 100 can still maintain stable and reliable performance under high-speed cutting or heavy cutting conditions. This embodiment does not limit this.

[0059] In one possible implementation, referring to Figure 2 and Figure 5 As shown, a chip removal groove 160 may be provided on one side of the cutter head 122 facing the axis of the cutter handle 110. In this way, during the cutting rotation process, it helps to further avoid the battery 200 cap 210 and avoid mutual interference with the cap 210, thereby achieving a better cutting effect to the greatest extent.

[0060] In this embodiment, there is no limitation on the shape of the chip removal and air avoidance groove 160. For example, the chip removal and air avoidance groove 160 may be an arc structure, which can better adapt to the shape of the cap 210, ensure that the milling cutter 100 can fully process the cap 210, thereby improving the cutting performance, reducing vibration and heat accumulation during the cutting process, and helping to optimize the service life and production efficiency of the milling cutter 100.

[0061] In addition, in this embodiment, the size of the chip removal and avoidance groove 160 is not limited and can be set according to actual needs.

[0062] In one possible implementation, referring to Figure 5 As shown, the chip removal groove 160 may have a first arc line 161 on the side facing the cutting direction of the cutter head 122, and a second arc line 162 on the side away from the cutting direction of the cutter head 122, and the first arc line 161 and the second arc line 162 are tangent.

[0063] In this way, during the cutting process, the force can be made uniform. Specifically, when the first arc line 161 and the second arc line 162 are tangent, the contact area between them is the largest, which can effectively disperse the force and make the force more uniform. In addition, this design helps to reduce stress concentration, improve the stability and durability of the structure, and improve the overall performance; moreover, this design can better distribute and balance the load, avoid excessive local stress, and thus protect the milling cutter 100 from damage.

[0064] In one possible implementation, referring to Figure 2 As shown, the side of the cutter head 122 away from the cutting direction has an arc surface, so that a clearance area 1221 is formed on the side of the cutter head 122 away from the cutting direction.

[0065] In this way, a clearance area 1221 is formed through the transition of the arc surface. On the one hand, it can further avoid the edge of the battery 200 cap 210, preventing interference with the cap 210, and thus achieving a better cutting effect to the greatest extent. On the other hand, during the cutting process, a large amount of heat will be generated due to the high-speed movement and friction of the cutter head 122 part. If this heat cannot be dissipated in time, it will cause the cutter head 122 to overheat, which will in turn affect the durability and cutting quality of the milling cutter 100. Through the transition of the arc surface, the contact area between the cutter head 122 and the air can be increased to a certain extent, which is conducive to the rapid dissipation of heat, thereby protecting the cutter head 122 from overheating damage and extending the service life of the milling cutter 100. On the other hand, the design of the arc surface can better disperse stress, reduce the stress concentration phenomenon of the cutter head 122, make the cutter head 122 more stable during the cutting process, reduce the wear or breakage of the cutter head 122 caused by stress concentration, and improve the cutting efficiency and quality.

[0066] In an implementable embodiment, referring to Figure 5 as shown, one side of the cutter head 122 facing its cutting direction has a cutting edge, and the grooving angle of the cutting edge can be 20° - 35°.

[0067] Exemplarily, the grooving angle A of the cutting edge can be 20°, 25°, 27°, 30°, 25° or any value between 20° - 35°. In this embodiment, the grooving angle of the cutting edge is mainly taken as 27° for illustration.

[0068] If the grooving angle of the cutting edge is too small, it may lead to incomplete cutting and rough cutting. If the grooving angle of the cutting edge is too large, it may cause excessive wear or damage to the material. Therefore, in this embodiment, the grooving angle of the cutting edge is limited to 20° - 35°. In this way, on the one hand, the direction and magnitude of the cutting force can be effectively controlled, thereby reducing the extrusion and friction on the cap 210, reducing the deformation and heat affected zone of the cap 210, and improving the processing quality. On the other hand, the thickness and direction of the chip can be effectively controlled, which helps the chip to be discharged smoothly, avoids chip accumulation and tool blockage, and keeps the chip flow smooth. On the other hand, it can reduce the vibration and heat accumulation during the cutting process, protect the milling cutter 100 from premature wear, and extend the service life of the milling cutter 100.

[0069] In an implementable embodiment, referring to Figure 2As shown, a chip discharge groove 1222 may be provided on one side of the cutter head 122 facing its cutting direction. In this way, on the one hand, it is convenient for the discharge and cleaning of the chips, and can help the chips to be quickly discharged from the cutting area, so as to avoid the chips from being entangled or blocked during the cutting process, thereby maintaining the smoothness of the cutting process and improving the work efficiency; on the other hand, it can not only promote the discharge of the chips, but also control the outflow direction of the chips; on the other hand, it can reduce the resistance in the cutting process, reduce the wear of the milling cutter 100, and extend the service life of the milling cutter 100.

[0070] Exemplarily, the chip groove 1222 may be an arc-shaped structure. In this way, the arc-shaped chip groove 1222 can better guide the flow of chips, reduce the phenomenon of chip blockage and accumulation, thereby keeping the working area clean and improving work efficiency. In addition, it also helps to enhance the chip guiding ability, reduce the resistance of chips during the discharge process, ensure that the chips can be discharged smoothly, and avoid interference with the milling cutter 100 and the cap 210.

[0071] In one possible implementation, referring to Figure 7 As shown, the axial end of the shank 110 may be provided with an avoidance hole 111, so that when the milling cutter 100 is cutting, the avoidance hole 111 accommodates the cap 210, which helps to avoid mutual interference with the cap 210 to the greatest extent, thereby achieving a better cutting effect to the greatest extent, and helps to play a good limiting role for the cap 210, avoiding the problem of relative movement between the cap 210 and the milling cutter 100 during the cutting process, thereby ensuring the accuracy of cutting.

[0072] In this embodiment, there is no limitation on the shape of the avoidance hole 111. For example, the shape of the avoidance hole 111 may be a diamond, a square, a circle, etc., which is not limited in this embodiment.

[0073] In this embodiment, the avoidance hole 111 is mainly described as a diamond shape. In this way, on the one hand, the diamond design can provide more stable support, reduce the movement or shaking of the cap 210 during use, and maintain the stability of the battery 200; on the other hand, the design of the diamond avoidance hole 111 helps to prevent accidental short circuits inside the battery 200, and through its special shape and structure, it provides an additional layer of protection to reduce the risk of explosion of the battery 200; on the other hand, it can adapt to different models and specifications of the cap 210, provide better compatibility, while maintaining its protection and stability.

[0074] The embodiments of the present application provide a milling cutter and a processing device. The milling cutter includes a tool shank and at least two cutter arms. The at least two cutter arms are arranged at intervals around the axial end of the tool shank, so as to form an avoidance area between the cutter arms; the avoidance area is configured to avoid a cap during the cutting of the milling cutter. In this way, when the milling cutter rotates, an avoidance area can be formed in the center, which helps to avoid the cap of the battery. Moreover, in the present application, only the axial movement of the milling cutter is required to complete the cutting operation, which helps to quickly position and process the cap of the battery, reduce the number of cutting times of repeated processing, improve the cutting efficiency, and meet the welding requirements of the cap of the battery; in addition, different models of batteries can be compatible, and the manufacturing cost is relatively low, which is convenient for popularization and use.

[0075] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, or an indirect connection through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0076] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0077] The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims and drawings of the present application are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0078] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A milling cutter, characterized in that, A milling cutter for cutting the cap of a battery; the milling cutter includes a tool shank (110) and at least two cutter arms (120), and at least two of the cutter arms (120) are connected to the axial end of the tool shank (110); one end of each cutter arm (120) facing away from the tool shank (110) has a cutter head (122); when the milling cutter rotates, the cutter heads (122) of different cutter arms (120) have the same cutting direction; At least two of the cutter arms (120) are arranged at intervals around the axial end of the tool shank (110), so as to form an avoidance area (130) between the cutter arms (120); the avoidance area (130) is configured to avoid the cap when the milling cutter cuts.

2. The milling cutter according to claim 1, wherein, The cutter arm (120) includes a connecting portion (121), the connecting portion (121) is connected to the end face of the tool shank (110) in the axial direction, and the cutter head (122) is connected to one end of the connecting portion (121) facing away from the tool shank (110); one end of the connecting portion (121) connected to the tool shank (110) has a first strengthening portion (140), and the first strengthening portion (140) is located on the side of the connecting portion (121) facing the axis of the tool shank (110).

3. The milling cutter according to claim 2, characterized in that, A second strengthening portion (150) is provided on one side of the connecting portion (121) facing and / or away from the cutting direction of the cutter arm (120); the thickness of the cutter arm (120) gradually increases from the connecting portion (121) to the tool shank (110) at the position of the second strengthening portion (150).

4. The milling cutter according to claim 1, wherein, A chip removal clearance groove (160) is provided on the side of the cutter head (122) facing the axis of the tool shank (110).

5. The milling cutter according to claim 4, characterized in that, One side of the chip removal clearance groove (160) facing the cutting direction of the cutter head (122) has a first circular arc line (161), and one side of the chip removal clearance groove (160) facing away from the cutting direction of the cutter head (122) has a second circular arc line (162), and the first circular arc line (161) and the second circular arc line (162) are tangent.

6. The milling cutter according to claim 1, characterized in that, One side of the cutter head (122) facing away from its cutting direction has a circular arc surface, so as to form an avoidance area (1221) on one side of the cutter head (122) facing away from its cutting direction.

7. The milling cutter according to claim 1, characterized in that, One side of the cutter head (122) facing its cutting direction has a cutting edge, and the slotting angle of the cutting edge is 20°-35°.

8. The milling cutter according to claim 1, characterized in that, A chip removal groove (1222) is provided on the side of the cutter head (122) facing its cutting direction.

9. The milling cutter according to any one of claims 1-8, characterized in that, An avoidance hole (111) is provided at the axial end of the tool shank (110), and the avoidance hole (111) is configured to accommodate the cap when the milling cutter cuts.

10. The milling cutter according to any one of claims 1-8, characterized in that, The cutter arm (120) and the tool shank (110) are integrally formed.

11. The milling cutter according to any one of claims 1-8, characterized in that, Two cutter arms (120) are provided at both axial ends of the tool shank (110), and the two cutter arms (120) are centrosymmetric with respect to the axis of the tool shank (110).

12. A processing device, characterized in that, The processing device includes a device main body and a milling cutter according to any one of claims 1-11. The device main body has a rotating main shaft, and the milling cutter is coaxially and fixedly connected to the rotating main shaft. The processing device is configured to cut the cap of the battery by rotating the milling cutter and moving axially.

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