Cutter, drilling device and battery production device

Abstract

The utility model discloses a cutter, a drilling device and a battery production device.The cutter comprises a fixing part and a machining part, the machining part is arranged on the side, in the axial direction of the cutter, of the fixing part, and a bottom cutting edge is arranged on the end face of the side, away from the fixing part, of the machining part in a protruding mode; the extending direction of the cutting edge of the bottom cutting edge is perpendicular to the axial direction, a plurality of spirally-extending side cutting edges are arranged on the outer circumferential face of the machining part, chip grooves formed in the outer circumferential face in a sunken mode are formed between the adjacent side cutting edges, and in the circumferential direction of the tool, the cutting edge of the bottom cutting edge is perpendicular to the axial direction. And the width of the chip groove is smaller than the distance between the adjacent side cutting edges. According to the cutter, machining chippings can be conveniently discharged, and the surface roughness of a machined surface can be reduced.

Description

Technical Field

[0001] The present application relates to the field of mechanical processing, and in particular to a tool, a drilling device and a battery production device. Background Art

[0002] With the development of new energy technology, batteries are used more and more widely, such as in mobile phones, laptops, battery cars, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc. The processing technology for batteries has also been developed accordingly.

[0003] The development of battery production and processing technology must take into account many factors at the same time. For example, how to improve processing efficiency during the drilling process is an important research direction in the field of battery production and processing. Utility Model Content

[0004] The present application provides a tool, a drilling device and a battery production device, which can improve processing efficiency.

[0005] In the first aspect, according to an embodiment of the present application, a tool is proposed, comprising a fixing portion and a processing portion, wherein the processing portion is arranged on one side of the fixing portion in the axial direction of the tool, a bottom cutting edge is protrudingly provided on the end face of the processing portion facing away from the fixing portion, and an extension direction of the cutting edge of the bottom cutting edge is perpendicular to the axial direction; a plurality of spirally extending side cutting edges are provided on the outer peripheral surface of the processing portion, and a chip groove recessed by the outer peripheral surface is provided between adjacent side cutting edges; in the circumferential direction of the tool, the width of the chip groove is smaller than the spacing between adjacent side cutting edges.

[0006] In the technical solution of the embodiment of the present application, the tool includes a fixing part for clamping and fixing, and a processing part provided with a blade for cutting, wherein the processing part is provided with a bottom cutting edge and a side cutting edge, thereby the waste chips can be shredded by the bottom cutting edge to reduce the size of the chips; at the same time, the chips can be easily discharged by providing a chip discharge groove. Thus, the possibility of large chips being stuck in the hole and not easy to fall off can be reduced, and the chips can be discharged in time and smoothly, thereby improving the processing efficiency.

[0007] According to some embodiments of the present application, two bottom cutting edges are arranged on the end surface of the processing portion away from the fixing portion, and the bottom cutting edges are arranged centrally symmetrically with respect to the central axis of the tool. The number of the bottom cutting edges and the chip removal grooves is small, so that the chip removal grooves can have a larger width, which is convenient for chip removal.

[0008] According to some embodiments of the present application, in the circumferential direction, the bottom cutting edge has a cutting side and a connecting side that are arranged opposite to each other, and one end of the chip removal groove extends to the end face of the processing part away from the fixing part and is arranged in connection with the cutting side. The chip removal groove extends to the end face where the bottom cutting edge is located and is arranged at the edge of the bottom cutting edge to facilitate chip removal.

[0009] According to some embodiments of the present application, the bottom cutting edge is provided with an auxiliary groove, the auxiliary groove is recessed from the cutting side to the connecting side, the auxiliary groove extends along the axial direction of the tool and is connected to the chip discharge groove. The auxiliary groove is provided on the bottom cutting edge to facilitate chip discharge during the cutting process.

[0010] According to some embodiments of the present application, in the circumferential direction, the extension size of the auxiliary groove is less than or equal to the extension size of the bottom cutting edge, and the cross-sectional figure formed by the auxiliary groove in the cross section perpendicular to the axial direction is an arc. The auxiliary groove can be in an arc shape, which makes it easier to guide the debris to the chip discharge groove and facilitates processing.

[0011] According to some embodiments of the present application, the side cutting edge includes a roughing edge and a finishing edge arranged in sequence along the spiral direction, the roughing edge is arranged on the side close to the bottom cutting edge; the side cutting edge is arranged protruding from the outer peripheral surface, and in the radial direction of the tool, the size of the roughing edge protruding from the outer peripheral surface is smaller than the size of the finishing edge protruding from the outer peripheral surface. By processing the hole wall twice with the stepped side cutting edge, entanglement burrs can be reduced and the surface roughness can be reduced.

[0012] According to some embodiments of the present application, in the radial direction, the difference between the protruding size of the finishing edge and the protruding size of the roughing edge is 0.2mm-0.5mm. The diameter difference between the roughing and finishing edges in the stepped side cutting edge is adjusted to achieve a better deburring effect.

[0013] According to some embodiments of the present application, in the axial direction of the tool, the extension size of the roughing edge is 1mm-5mm, and the extension size of the processing part is 20mm-30mm. The extension sizes of the roughing and finishing edges are adjusted to meet the requirements of holes of different depths.

[0014] According to some embodiments of the present application, an avoidance slope is further provided at one end of the chip groove near the bottom cutting edge, the avoidance slope is connected between the end surface of the processing portion on one side away from the fixing portion and the groove wall of the chip groove, and the angle between the avoidance slope and the central axis of the tool is greater than the maximum angle between the groove wall and the central axis. The avoidance slope is provided on the back side of the bottom cutting edge, which can reduce the possibility of interference between this part of the area and the cutting bottom surface, so as to make the cutting smooth.

[0015] In a second aspect, a drilling device is proposed according to an embodiment of the present application, comprising a tool in any embodiment of the first aspect, and the tool is used for drilling.

[0016] In a third aspect, a battery production device is proposed according to an embodiment of the present application, comprising the drilling device in any embodiment of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of a tool provided in some embodiments of the present application;

[0019] Figure 2 A side view of a cutting tool provided for some embodiments of the present application;

[0020] Figure 3 A bottom view of a cutting tool provided for some embodiments of the present application.

[0021] Reference numerals:

[0022] 100-knife;

[0023] 10-fixing part; 20-processing part;

[0024] 21- bottom cutting edge; 22- side cutting edge; 23- chip groove; 24- spacing area;

[0025] 211-cutting side; 212-connecting side; 213-auxiliary groove; 221-roughing edge; 222-finishing edge; 231-avoidance slope;

[0026] X-axis direction. DETAILED DESCRIPTION

[0027] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0029] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0032] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0033] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0034] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of 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 embodiments of the present application can be understood according to the specific circumstances.

[0035] During the machining process, when a hole needs to be formed on the workpiece, it is usually obtained by using a tool to perform drilling, milling and other process steps. However, when machining some metal parts, long spiral metal debris is usually formed during the drilling process. The debris is not easy to be discharged from the hole, especially when drilling on the wall of a closed cavity structure with a thin cavity wall. The larger debris is difficult to clean.

[0036] In view of this, the present application provides a tool, a drilling device and a battery production device, wherein the tool can reduce the size of cutting debris generated during the drilling process, making it easy to clean and discharge.

[0037] It can be understood that the following embodiments of the present application only use the tool for drilling holes in the bottom guard plate of the chemical chamber in the CTC (Cell To Chassis) structure battery as an example, but the tool provided in the embodiments of the present application is not limited to the following embodiments, and can also be used in other situations where it is necessary to drill holes in the cavity wall and protect them.

[0038] Next, combine with Figure 1 To Attachment Figure 3 The structure of the tool 100 will be described.

[0039] Please also read Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of a tool provided in some embodiments of the present application, Figure 2 A side view of a cutting tool provided for some embodiments of the present application.

[0040] In the first aspect, according to an embodiment of the present application, a tool 100 is proposed, comprising a fixing portion 10 and a processing portion 20, wherein the processing portion 20 is arranged on one side of the fixing portion 10 on the axial direction X of the tool, and a bottom cutting edge 21 is protrudingly provided on the end face of the processing portion 20 which is away from the fixing portion 10, and an extension direction of the cutting edge of the bottom cutting edge 21 is perpendicular to the axial direction X, and a plurality of spirally extending side cutting edges 22 are provided on the outer peripheral surface of the processing portion 20, and a chip groove 23 which is recessed in the outer peripheral surface is provided between adjacent side cutting edges 22.

[0041] The embodiment of the present application provides a tool 100, which can be used to drill holes at preset positions of structural parts such as battery boxes during the production and processing of batteries. The tool 100 includes a fixing portion 10 and a processing portion 20 arranged in sequence along its own axial direction X. The fixing portion 10 can be a cylinder and a chamfered structure is provided on the edge of the end face on one side away from the processing portion 20 to facilitate clamping and fixing.

[0042] The processing part 20 is provided with a bottom cutting edge 21 and a side cutting edge 22, which can be used to cut the workpiece to be processed. The end face of the processing part facing away from the fixing part 10 is provided with a bottom cutting edge 21, and the bottom cutting edge 21 should protrude from other structural arrangements on the end face in the axial direction X, so that it can first contact the surface to be cut during the cutting process. Multiple bottom cutting edges 21 can be provided on the end face of the processing part 20 at the same time, and the extension directions of these bottom cutting edges 21 are parallel to the radial direction of the end face. In the circumferential direction, these bottom cutting edges 21 are spaced apart from each other, and can be arranged at equal intervals. A spirally extending side cutting edge 22 is protruding on the outer peripheral surface of the processing part 20, and one end of the side cutting edge 22 extends to the end face of the processing part 20 facing away from the fixing part 10, and can be arranged one-to-one with the bottom cutting edge 21 at the periphery of the end face.

[0043] On the outer circumferential surface of the processing portion 20, a chip groove 23 is provided between adjacent side cutting edges 22. The chip groove 23 is recessed from the outer circumferential surface of the processing portion 20 toward the central axis of the tool 100, and can extend spirally in parallel with the side cutting edge 22. At the same time, in the circumferential direction, the chip groove 23 can be provided in contact with the side cutting edge 22 and at the location of the cutting edge of the side cutting edge 22, that is, in the cutting direction of the tool 100, the chip groove 23 is correspondingly provided in contact with the front of the side cutting edge 22. Optionally, the chip groove 23 can be an arc-shaped groove.

[0044] Exemplarily, in the circumferential direction of the tool 100, the width of the chip groove 23 can be smaller than the spacing between adjacent side cutting edges 22, that is, the area between each two adjacent side cutting edges 22 can retain a certain width of the outer peripheral surface in addition to the chip groove 23, forming a spacing area 24 connected between the chip groove 23 and the side cutting edge 22, and the spacing area 24 and the chip groove 23 extend parallel to each other, and the overall structure is similar to the structure of the groove body used for chip removal at the outer peripheral surface of a common twist drill. Optionally, in the circumferential direction, the width of the chip groove 23 is recorded as L1, and the spacing between adjacent side cutting edges 22 is recorded as L2, and it can be set to L1≤0.5L2, that is, the width of the spacing area 24 in the circumferential direction is greater than the width of the chip groove 23 in the circumferential direction.

[0045] The tool 100 proposed in the present application is provided with a bottom cutting edge 21, a side cutting edge 22 and a chip groove 23 in the processing part 20, wherein the extension direction of the edge of the bottom cutting edge 21 is perpendicular to the axial direction X, thereby making the chips formed by cutting shorter and smaller, reducing the possibility of long spiral chips and getting stuck in the hole, making it easy to discharge. At the same time, a chip groove 23 is provided between adjacent side cutting edges 22, and the chips can be conveniently discharged through the chip groove 23, reducing the possibility that large chips get stuck in the hole and cannot be discharged smoothly, and need to be manually reprocessed, thereby improving the processing efficiency.

[0046] In some optional embodiments, two bottom cutting edges 21 are provided on an end surface of the processing portion 20 facing away from the fixing portion 10 , and the bottom cutting edges 21 are centrally symmetrically arranged relative to the central axis of the tool 100 .

[0047] The processing portion 20 is provided with a bottom cutting edge 21 on one end surface, and the number of the bottom cutting edges 21 can be set according to the processing and use parameters of the tool 100. For example, two bottom cutting edges 21 can be provided in the processing portion 20, and the two bottom cutting edges 21 can extend parallel to each other and be centrally symmetrically arranged relative to the central axis of the tool 100.

[0048] Correspondingly, two side cutting edges 22 and two chip grooves 23 can be provided in the processing part 20. The two side cutting edges 22 and the two chip grooves 23 can also be distributed in a centrally symmetrical manner relative to the central axis, forming two groups of cutting modules that are centrally symmetrically arranged and composed of a bottom cutting edge 21, a side cutting edge 22 and a chip groove 23.

[0049] By providing two bottom cutting edges 21 in the processing portion 20 , the outer peripheral surface of the tool 100 can have sufficient space to provide a chip removal groove 23 with a certain width, thereby further facilitating chip removal during the cutting process.

[0050] See also Figure 3 , Figure 3 Bottom view of the tool provided for some embodiments of the present application. In some optional embodiments, in the circumferential direction, the bottom cutting edge 21 has a cutting side 211 and a connecting side 212 that are arranged opposite to each other, and one end of the chip groove 23 extends to the end surface of one side of the processing portion 20 away from the fixing portion 10, and is connected to the cutting side 211.

[0051] The chip groove 23 in the processing part 20 is used to discharge the cutting debris generated during the cutting edge processing. Therefore, the chip groove 23 should be set at a position connected to both the bottom cutting edge 21 and the side cutting edge 22, so that the chips can enter and move outward along the extension direction of the chip groove 23. On this basis, one end of the chip groove 23 can extend to the interface between the processing part 20 and the fixing part 10, and the other end opposite can extend to the end face where the processing part 20 is located, and is connected in front of the edge of the bottom cutting edge 21, so as to discharge the chips in time after the bottom cutting edge 21 cuts out the chips.

[0052] For example, the bottom cutting edge 21 may have a cutting side 211 and a connecting side 212 which are arranged opposite to each other in the circumferential direction of the tool 100, wherein the cutting side 211 is the side where the cutting edge of the bottom cutting edge 21 is located, and the connecting side 212 is the side where the cutting edge is connected to the main body in the processing part 20. On this basis, the chip groove 23 should be connected to the position where the cutting side 211 is located, so that the cut chips can fall into the chip groove 23.

[0053] In some optional embodiments, the bottom cutting edge 21 is provided with an auxiliary groove 213 , which is recessed from the cutting side 211 to the connecting side 212 , and extends along the axial direction X of the tool 100 and is connected to the chip removal groove 23 .

[0054] The bottom cutting edge 21 in the present application may be provided with an auxiliary groove 213 for further improving the chip removal efficiency. The auxiliary groove 213 is provided at the bottom cutting edge 21, and starts from the cutting edge of the bottom cutting edge 21, and is recessed in the direction close to the connecting side 212, forming an area that is partially recessed relative to both sides. The auxiliary groove 213 may be in an arc, rectangular, triangular, trapezoidal, etc. shape, and may be interconnected with the chip removal groove 23 in the axial direction X. Optionally, the wall portion of the auxiliary groove 213 may also be a cutting edge, that is, the position of the auxiliary groove 213 may be provided with the same cutting edge as the adjacent area, and correspondingly provide the same cutting function.

[0055] By providing the auxiliary groove 213 on the bottom cutting edge 21 , a larger space can be provided for the discharge of the debris, so that the debris can be discharged more easily during the cutting process.

[0056] In some optional embodiments, in the circumferential direction, the extension dimension of the auxiliary groove 213 is less than or equal to the extension dimension of the bottom cutting edge 21 , and the cross-sectional shape formed by the auxiliary groove 213 in the cross section perpendicular to the axial direction X is an arc.

[0057] As mentioned above, the bottom cutting edge 21 may be provided with an auxiliary groove 213 for further improving the possibility of smooth chip discharge. The auxiliary groove 213 is provided on the bottom cutting edge 21, and its depth may be less than the circumferential width of the bottom cutting edge 21, so that the auxiliary groove 213 is located within the range of the cutting edge, thereby enabling the position of the auxiliary groove 213 to still form a cutting edge and maintain good cutting performance. Exemplarily, the auxiliary groove 213 may be an arc-shaped groove to facilitate processing and maintain cutting performance, while better guiding the chips to the chip discharge groove 23.

[0058] In some optional embodiments, the side cutting edge 22 includes a roughing edge 221 and a finishing edge 222 arranged in sequence along the spiral direction, and the roughing edge 221 is arranged on the side close to the bottom cutting edge 21; the side cutting edge 22 is arranged to protrude from the outer peripheral surface, and in the radial direction of the tool, the size of the roughing edge 221 protruding from the outer peripheral surface is smaller than the size of the finishing edge 222 protruding from the outer peripheral surface.

[0059] A side cutting edge 22 is protrudingly provided on the outer circumference of the processing portion 20. The side cutting edge 22 is used to process the hole wall, and its diameter is related to the preset hole size. The side cutting edge 22 extends spirally along the outer circumference of the tool 100. In the spiral direction, that is, the direction of its own extension, the side cutting edge 22 can be composed of two parts, that is, a roughing edge 221 and a finishing edge 222, wherein the roughing edge 221 is provided at the front section close to the bottom cutting edge 21.

[0060] In the process of drilling with the tool 100, the roughing blade 221 first processes the hole wall. Since the roughing blade 221 is protruding from the outer peripheral surface, its diameter during rotation should be greater than or equal to the maximum diameter of the circular trajectory formed when the bottom cutting blade 21 rotates, and at the same time smaller than the preset diameter of the desired hole. The protruding size of the finishing blade 222 is greater than the protruding size of the roughing blade 221, that is, the diameter of the circular trajectory formed by the rotation is greater than that formed by the roughing blade 221, and should be the same as or similar to the preset diameter required for the hole. Therefore, when drilling, as the tool 100 is fed, the bottom cutting blade 21 can be used for cutting first, and then the hole wall can be processed by the roughing blade 221, and finally the hole can be further widened by the finishing blade 222 to reach the preset diameter.

[0061] By setting the stepped side cutting edge 22 with different diameters, the hole wall can be processed twice, rough and fine, with the amount of cutting reduced each time, which can further reduce the size of the chips for easy discharge, while reducing entanglement burrs and reducing the surface roughness of the hole wall.

[0062] In some optional embodiments, in the radial direction, the difference between the protruding dimension of the finishing edge 222 and the protruding dimension of the roughing edge 221 is 0.2 mm-0.5 mm.

[0063] As mentioned above, the side cutting edge 22 may include a roughing edge 221 and a finishing edge 222, and the protruding size of the finishing edge 222 is greater than the protruding size of the roughing edge 221, and the difference between the two may be 0.2mm-0.5mm, optionally 0.3mm-0.4mm, and specifically may be one of 0.3mm, 0.32mm, 0.34mm, 0.36mm, 0.38mm, and 0.4mm. Exemplarily, the protruding size of each part of the roughing edge 221 is the same, and the protruding size of each part of the finishing edge 222 is the same.

[0064] By setting the difference between the protruding dimensions of the roughing edge 221 and the finishing edge 222 to be within the aforementioned range, a good deburring effect can be achieved at the hole wall and the opening.

[0065] In some optional embodiments, in the axial direction of the tool 100 , the extension dimension of the rough machining edge 221 is 1 mm-5 mm, and the extension dimension of the machining portion 20 is 20 mm-30 mm.

[0066] The extension size of the roughing edge 221 in the side cutting edge 22 in the axial direction X can be set according to the specific depth of the hole to be processed. For example, it can be designed to be ±1mm of the depth of the hole to be processed, so as to reduce the feed stroke when the tool 100 is used to process the hole and improve the processing efficiency. Therefore, setting the size of the roughing edge 221 to 1mm-5mm can improve the applicability of the tool 100. For example, the size of the roughing edge 221 can be 1mm-3mm, and specifically can be one of 1mm, 1.5mm, 2mm, 2.5mm, and 3mm.

[0067] Similarly, the overall extension size of the processing portion 20 in the axial direction X can be 20mm-30mm, wherein the extension size of the side cutting edge 22 in this direction can be the same as or slightly smaller, that is, the sum of the sizes of the roughing edge 221 and the finishing edge 222 can be 20mm-30mm, to adapt to different hole depth requirements. Exemplarily, the extension size of the processing portion 20 can be 23mm-27mm, specifically one of 23mm, 24mm, 25mm, 26mm, and 27mm can be selected.

[0068] In some optional embodiments, an avoidance slope 231 is further provided at one end of the chip groove 23 close to the bottom cutting edge 21, and the avoidance slope 231 is connected between the end surface of the machining part 20 facing away from the fixed part 10 and the groove wall of the chip groove 23, and the angle between the avoidance slope 231 and the central axis of the tool 100 is greater than the maximum angle between the groove wall and the central axis.

[0069] An inclined surface inclined toward the direction close to the fixing portion 10, i.e., an escape inclined surface 231, may be provided at one end of the chip groove 23 close to the bottom cutting edge 21. The escape inclined surface 231 is connected between the groove wall of the chip groove 23 and the end face of the processing portion 20, and can change the angle between the structure and the end face. The escape inclined surface 231 may be located on the side where the cutting edge of the bottom cutting edge 21 is located and is spaced apart from the bottom cutting edge 21.

[0070] The extension direction of the avoidance slope 231 intersects with the axial direction X of the tool 100, and the angle between the slope and the axial direction X can be greater than the angle between the groove wall of the chip groove 23 and the axial direction X, and the contour shape of the avoidance slope 231 can be set according to the edge shape of the slope and the groove wall rubber of the chip groove 23. Optionally, the angle between the avoidance slope 231 and the axial direction X can be 30°-60°.

[0071] Exemplarily, in an embodiment in which two bottom cutting edges 21 are provided on the end face of the processing portion 20, the boundary line formed by the intersection of the avoidance slope 231 and the end face can extend along the radial direction of the tool 100, and be perpendicular to the extension direction of the cutting edge of the bottom cutting edge 21, and be centrally symmetrical about the central axis of the tool 100 similar to the bottom cutting edge 21.

[0072] An avoidance slope 231 is provided at one end of the chip groove 23 to reduce the possibility of interference between the partial structure located behind the bottom cutting edge 21 in the cutting direction and the workpiece being processed, thereby making the cutting smooth, giving the tool 100 good processing accuracy, and maintaining the tool 100 with good structural strength after processing.

[0073] In a second aspect, a drilling device is proposed according to an embodiment of the present application, comprising a tool 100 in any one of the embodiments of the first aspect, and the tool 100 is used for drilling.

[0074] In a third aspect, a battery production device is proposed according to an embodiment of the present application, comprising the drilling device in any one of the embodiments of the second aspect.

[0075] The present application also proposes a battery production device, which includes a drilling device that uses the aforementioned tool 100 and is capable of drilling holes in battery boxes, battery cell shells, and other locations. Exemplarily, the parts that use the tool 100 to process the required holes may include the upper cover plate and bottom guard plate of a traditional battery pack, as well as the bottom guard plate, support beam, expansion beam, etc. in a battery pack using a CTC structure. Optionally, the tool 100 can be used to process the fixing holes required for connection and fixation of the bottom guard plate of the chemical compartment in the CTC battery pack, or other similar hole structures set on a 2mm-3mm thick sealed cavity aluminum profile.

[0076] The drilling device and battery production device provided in the embodiments of the present application have all the beneficial effects of the tool 100 in any of the embodiments of the first aspect mentioned above. For details, please refer to the specific description of the tool 100 in the above embodiments, and this embodiment will not be repeated here.

[0077] The present application provides a tool 100, comprising a fixing portion 10 and a processing portion 20 arranged in sequence along its own axial direction X, wherein the end face of the processing portion 20 away from the fixing portion 10 is provided with two bottom cutting edges 21, the bottom cutting edges 21 are arranged centrally symmetrically relative to the central axis of the tool 100, and the extension direction of the bottom cutting edge is perpendicular to the axial direction X, and the bottom cutting edge is also provided with an arc-shaped auxiliary groove recessed from its own cutting side to the connecting side. The outer peripheral surface of the processing portion 20 is provided with a side cutting edge 22 protrudingly, and a chip removal groove 23 is provided between adjacent side cutting edges 22, both of which are spirally extended and extend to the end face where the bottom cutting edge 21 is located, and the width of the chip removal groove 23 is less than the spacing between adjacent side cutting edges 22. The side cutting edge 22 includes a roughing edge 221 and a finishing edge 222. The protruding dimension of the roughing edge 221 is smaller than that of the finishing edge 222. The difference between the protruding dimensions of the two is 0.2mm-0.5mm in the axial direction X. The extension dimension of the roughing edge is 1mm-5mm, and the extension dimension of the processing portion is 20mm-30mm. An avoidance slope 231 is provided at one end of the chip groove 23 close to the bottom cutting edge 21. The avoidance slope 231 is connected between the end face of the processing portion 20 away from the fixing portion 10 and the groove wall of the chip groove 23. The angle between the avoidance slope 231 and the central axis of the tool 100 is greater than the maximum angle between the groove wall and the central axis.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A cutting tool, characterized in that: include: Fixed part; The processing portion is arranged on one side of the fixing portion in the axial direction of the tool, and a bottom cutting edge is protrudingly provided on the end face of the processing portion facing away from the fixing portion, and the extension direction of the bottom cutting edge is perpendicular to the axial direction. The outer peripheral surface of the processing portion is provided with a plurality of spirally extending side cutting edges, and a chip groove is provided between adjacent side cutting edges, which is recessed by the outer peripheral surface.

2. The tool according to claim 1, characterized in that Two bottom cutting edges are arranged on an end surface of the processing portion facing away from the fixing portion, and the bottom cutting edges are arranged in a central symmetric manner with respect to the central axis of the tool.

3. The tool according to claim 1, characterized in that In the circumferential direction, the bottom cutting edge has a cutting side and a connecting side that are arranged opposite to each other, and one end of the chip groove extends to an end surface of the processing portion that is away from the fixing portion and is connected to the cutting side.

4. The tool according to claim 3, characterized in that The bottom cutting edge is provided with an auxiliary groove, the auxiliary groove is recessed from the cutting side to the connecting side, the auxiliary groove extends along the axial direction of the tool and is communicated with the chip removal groove.

5. The tool according to claim 4, characterized in that In the circumferential direction, the extension dimension of the auxiliary groove is less than or equal to the extension dimension of the bottom cutting edge, and the cross-sectional shape formed by the auxiliary groove in the cross section perpendicular to the axial direction is an arc shape.

6. The tool according to claim 1, characterized in that The side cutting edge comprises a roughing edge and a finishing edge sequentially arranged along a spiral direction, wherein the roughing edge is arranged on a side close to the bottom cutting edge; The side cutting edge is arranged to protrude from the outer peripheral surface, and in the radial direction of the tool, the dimension of the rough machining edge protruding from the outer peripheral surface is smaller than the dimension of the finishing edge protruding from the outer peripheral surface.

7. The tool according to claim 6, characterized in that In the radial direction, the difference between the protruding dimension of the finishing edge and the protruding dimension of the roughing edge is 0.2 mm-0.5 mm.

8. The tool according to claim 6, characterized in that In the axial direction of the tool, the extension dimension of the rough machining edge is 1 mm-5 mm, and the extension dimension of the machining portion is 20 mm-30 mm.

9. The tool according to any one of claims 1 to 8, characterized in that An avoidance slope is also provided at one end of the chip groove close to the bottom cutting edge, and the avoidance slope is connected between the end surface of the processing part on one side away from the fixed part and the groove wall of the chip groove, and the angle between the avoidance slope and the central axis of the tool is greater than the maximum angle between the groove wall and the central axis.

10. A drilling device, characterized in that: The invention comprises a tool as claimed in any one of claims 1 to 9, wherein the tool is used for drilling.

11. A battery production device, characterized in that: Comprising the drilling device as claimed in claim 10.

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