METHOD FOR REMOVING A BURR, COMPUTER PROGRAM AND DEBURRING TOOL THEREFOR

Abstract

Method (300) for removing a burr (102) which is formed during the rotational joining of a metal bushing (110) with a hollow cylindrical section (110a) into an opening (101) of a busbar (100) provided for joining the metal bushing (110), wherein the method (300) comprises the following: Centering (301) one or more cutting wheels (202) around the opening (111) of the hollow cylindrical section (110a) of the metal bushing (110); and Driving (302) the one or more cutting wheels (202) to perform a cutting motion along the burr (102) of the conductor rail (100) in order to remove the burr (102), wherein the cutting motion includes both a rotational movement around the opening (111) of the hollow cylindrical section (110a) of the metal bushing (110) and a feed movement towards the burr (102).

Description

Technical field

[0001] The present invention relates to a method for removing a burr and a corresponding deburring tool. The invention relates in particular to a deburring method for the joint of rotationally friction-welded bushings on aluminum. State of the art

[0002] The contacting of aluminum busbars (or aluminum stampings) for e-mobility applications is typically carried out by rotary friction welding of copper bushings. Due to the material properties of aluminum, burrs often form between the bushing and the aluminum busbar. These burrs are unavoidable in this process and must be removed, as they interfere with subsequent process steps, and burr fragments can cause a short circuit. The burr is conventionally removed partially with side cutters, but flush deburring is rarely possible, leaving metal splinters or fragments at the deburring point. Using unguided cutting tools such as side cutters or even a utility knife poses an increased risk of injury to the user and can damage the surface coating of the bushing.

[0003] US patent 2 690 804 A discloses a machine for chamfering the edge of a workpiece. Description of the invention

[0004] One object of the invention is therefore to create a concept for deburring burrs that arise during rotary friction welding of copper bushings in aluminium busbars, in which the disadvantages described above with regard to safety and risk of injury do not occur.

[0005] The problem is solved by the subject matter of the independent claims. Advantageous embodiments of the invention are specified in the dependent claims, the description, and the accompanying figures.

[0006] The inventive solution is based on the idea of ​​removing the burr with a specially developed auxiliary tool suitable for both manual and machine use. A cutting wheel is positioned in the bushing hole using a device and guided centrally around the bushing. The cutting wheel cleanly cuts the burr flush between the rail and the bushing. The burr can then be easily removed. The methodology of the specially developed auxiliary tool, which has already been tested in a manual process, can thus be transferred to an automated method, as described in more detail in this disclosure.

[0007] The solution presented here is particularly suitable for the industrialization of rotary friction welding as an automatable method for reliably removing burrs. Tool manufacturers can incorporate this method as a step in their production line to create a manufacturing system with an automated deburring tool in accordance with this disclosure.

[0008] As already mentioned, the method presented here can be automated and integrated into the plant design. By using a deburring tool or method as described in this disclosure, no disruptive burrs will interfere with subsequent process steps, such as housing assembly, screwing processes, and technical cleanliness.

[0009] According to a first aspect, the problem described above is solved by a method for removing a burr that arises during the rotational joining of a metal bushing with a hollow cylindrical section into an opening of a busbar provided for joining the metal bushing, wherein the method comprises: centering one or more cutting wheels around the opening of the hollow cylindrical section of the metal bushing; and driving the one or more cutting wheels to perform a cutting motion along the burr of the busbar in order to remove the burr, wherein the cutting motion comprises both a rotational motion around the opening of the hollow cylindrical section of the metal bushing and a feed motion towards the burr.

[0010] This method allows for a straight cut with the cutting wheel, as the cutting wheel rotates in a centered position, facing the burr, and thus cuts it off evenly. Burrs, which are particularly common during the rotary friction welding of copper bushings in aluminum busbars, can therefore be removed safely and without risk of injury.

[0011] Rotational joining is, for example, rotary welding, rotary friction welding, or another similar process. It can also involve bonding. The busbar, for example, is an aluminum busbar. The metal socket, for example, is a copper socket.

[0012] The feed movement of one or more cutting wheels ensures that the respective cutting wheel is always in contact with the burr and that sufficient pressure is generated so that the burr can be cut off via the cutting edge of the respective cutting wheel.

[0013] According to an exemplary embodiment of the method, the one or more cutting wheels comprise at least three cutting wheels arranged symmetrically to each other, which center themselves around the opening of the hollow cylindrical section of the metal bushing.

[0014] This achieves the technical advantage that the three or more cutting wheels can self-center around the opening of the hollow cylindrical section of the metal bushing due to their symmetrical arrangement.

[0015] With multiple cutting wheels, the burr is cut simultaneously by the respective cutting edges of the wheels, making the cutting process faster and more efficient. Each cutting wheel has a single cutting edge that works together during the cutting process to achieve simultaneous cutting.

[0016] According to an exemplary embodiment of the method, the at least three cutting wheels are arranged at equal distances from each other and at equal distances from the opening of the hollow cylindrical section of the metal bushing.

[0017] This allows at least three cutting wheels to self-center.

[0018] It has been shown that three identical cutting wheels, arranged at 120-degree angles to each other, are particularly advantageous for achieving a fast and clean cutting result. Of course, different cutting wheels can also be used, for example, those with different radii. In all cases, the cutting edges on the wheels can be either straight or serrated. However, straight edges are particularly advantageous for clean, residue-free cutting.

[0019] According to an exemplary embodiment of the method, the centering of the one or more cutting wheels is carried out via a shaft or device to which the one or more cutting wheels are attached; wherein the shaft or device for centering the one or more cutting wheels is inserted into the opening of the hollow cylindrical section of the metal bushing.

[0020] The shaft can also be used to center an arrangement of cutting wheels, which may, for example, only have one or two cutting wheels.

[0021] According to an exemplary embodiment of the method, the method further comprises: applying a feed force to the one or more cutting wheels in order to perform the feed movement of the one or more cutting wheels and to press the one or more cutting wheels against the burr.

[0022] The feed force applied to one or more cutting wheels determines their feed movement. This force ensures that each cutting wheel is always in contact with the burr and that sufficient pressure is generated to remove the burr via the cutting edge of the respective wheel. The feed force can be, for example, a lever force or a tilting force acting on the one or more cutting wheels.

[0023] According to an exemplary embodiment of the method, the method further comprises: mounting each of the one or more cutting wheels on a bearing with an engagement element, such that the respective cutting wheel is rotatably mounted and can be moved towards the burr; and applying a force to the engagement element to perform the rotary movement and the moving movement.

[0024] This engagement element allows force to be applied to the respective cutting wheel, thus initiating a cutting process. The force can be applied either manually or by means of a machine.

[0025] According to an exemplary embodiment of the method, the bearing comprises a rotary bearing for performing the rotary movement of the respective cutting wheel and a tilting bearing for performing the feed movement of the respective cutting wheel towards the burr.

[0026] The feed movement of each cutting wheel towards the burr ensures that the cutting wheel is always in contact with the burr and sufficient pressure is generated to cut the burr off via the cutting edge of the wheel. The rotating bearing ensures that the cutting process occurs along the burr, resulting in its complete removal.

[0027] According to an exemplary embodiment of the method, the tilting bearing comprises a rotationally symmetrical section to which the respective cutting wheel is rotatably attached, so that the respective cutting wheel performs a rotational movement about the rotationally symmetrical section of the tilting bearing when the rotary bearing is rotated, and the respective cutting wheel is uniformly loaded during the cutting movement along the burr.

[0028] This offers the technical advantage that the rotary motion of the pivot bearing allows the cutting edge of each cutting wheel to be guided around the opening of the hollow cylindrical section of the metal bushing to completely remove the burr, and that simultaneously the cutting wheel can rotate around its own axis, which corresponds to the axis of rotation of the rotationally symmetrical section of the rocker bearing to which the cutting wheel is attached. Thus, the cutting wheel rotates during the cutting process, resulting in even wear and stress distribution on the cutting edge.

[0029] According to a second aspect, the task described above is solved by a computer program comprising instructions which, when the program is executed by a computer, cause it to carry out the procedure according to the preceding first aspect.

[0030] Such a computer program allows the cutting motion of one or more cutting wheels to be controlled automatically, and the process can be executed automatically. The computer program can, for example, be used on the control system of a machine tool to remove a burr according to the method described above.

[0031] According to a third aspect, the problem described above is solved by a deburring tool for removing a burr that arises during the rotary joining of a metal bushing with a hollow cylindrical section into an opening of a busbar provided for joining the metal bushing, wherein the deburring tool comprises: one or more cutting wheels that can be positioned centered around the opening of the hollow cylindrical section of the metal bushing; and a mechanism for driving the one or more cutting wheels to perform a cutting motion along the burr of the busbar in order to remove the burr, wherein the cutting motion includes both a rotary motion around the opening of the hollow cylindrical section of the metal bushing and a feed motion towards the burr.

[0032] With such a deburring tool for removing burrs, straight cuts can be made to remove the burr cleanly and without residue, as the one or more cutting wheels can be positioned centrally around the opening of the hollow cylindrical section of the metal bushing and thus cut the burr evenly. Burrs, which are particularly likely to occur during the rotary friction welding of copper bushings in aluminum busbars, can therefore be removed safely and without risk of injury.

[0033] As described above, rotational joining can be, for example, rotary welding, rotary friction welding, or another similar process. It can also involve bonding. The busbar, for example, is an aluminum busbar. The metal socket, for example, is a copper socket. Brief character description

[0034] The invention will now be described in more detail with reference to exemplary embodiments and the figures. The figures show: Fig. 1a a 3D representation of a busbar 100 with an opening 101 provided for rotary friction welding of a metal bushing; Fig. 1b a 3D representation of the power rail 100 from Fig. 1a with metal bushing 110 to be inserted into the opening 101; Fig. 2 a 3D representation of the power rail 100 from Fig. 1a with a metal bushing 110 joined into the opening 101 by means of rotary friction welding, wherein a burr 102 is visible in the busbar 100; Fig. 3 a schematic representation of a method 300 according to the invention for removing a burr. Fig. 4 a 3D representation of a deburring tool according to the invention 200; Fig. 5 a 3D representation of the deburring tool 200 according to the invention, which is inserted into the opening 101 of the busbar 100 provided for joining the metal bushing. Fig. 2 is plugged in; Fig. 6 a schematic representation of the operating principle of the deburring tool 200 according to the invention; and Fig. 7 a sectional view of the deburring tool 200 according to the invention.

[0035] The figures are merely schematic representations and serve only to illustrate the invention. Identical or equivalent elements are consistently identified by the same reference numerals.

[0036] The following detailed description refers to the accompanying drawings, which form part thereof and illustrate specific embodiments in which the invention can be implemented. It is understood that other embodiments can also be used and structural or logical modifications can be made without deviating from the concept of the present invention. Therefore, the following detailed description is not to be understood as limiting. Furthermore, it is understood that the features of the various embodiments described herein can be combined with one another, unless specifically stated otherwise.

[0037] The aspects and embodiments are described with reference to the drawings, where the same reference numerals generally refer to the same elements. For illustrative purposes, numerous specific details are presented in the following description to provide a thorough understanding of one or more aspects of the invention. However, it may be obvious to a person skilled in the art that one or more aspects or embodiments can be implemented with a lesser degree of specific detail. In other cases, known structures and elements are shown schematically to facilitate the description of one or more aspects or embodiments. It is understood that other embodiments may be used and structural or logical modifications may be made without departing from the concept of the present invention.

[0038] Fig. Figure 1a shows a 3D representation of a busbar 100 with an opening 101 provided for rotary friction welding of a metal bushing.

[0039] The busbar 100 can, for example, be part of a double busbar system, which is used to connect the battery of an electric vehicle to the charging infrastructure. The busbar 100 is a flat conductor made of solid metal, for example, aluminum.

[0040] The busbar 100 can comprise a first insulated section 100a and a second non-insulated section 100b, which is formed at one end of the busbar 100. The non-insulated section 100b has an opening 101, which is suitable for inserting a metal bushing 110, for example a copper bushing, in order to establish a metallurgical electrical connection between the busbar 100 and the metal bushing 110.

[0041] To produce the rotary joining connection, for example a rotary welding connection or a rotary friction welding connection, the busbar 100 can be clamped into a machine.

[0042] Fig. Figure 1b shows a 3D representation of the power rail 100. Fig. 1a with metal bushing 110 to be inserted into the opening 101.

[0043] The metal bushing 110 can be inserted into the opening 101 of the busbar 100 in order to electrically connect the metal bushing 110 to the busbar 100 by means of a rotary joining connection, for example a rotary welding connection or a rotary friction welding connection.

[0044] A force 120 is applied, which presses the metal bushing 110 into the opening 101 of the busbar.

[0045] After the first step "clamping the rail in the machine", accordingly Fig. 1a thus shows Fig. 1b the second step “connect socket to rail”.

[0046] The metal bushing 110, for example, comprises a first section 110a, the diameter of which is adapted for insertion into the opening 101 of the busbar 100, i.e., is approximately the same size as or slightly larger than the diameter of the opening 101. The metal bushing comprises, for example, a second section 110c, the diameter of which is larger than the diameter of the opening 101, in order to provide support for insertion when the first section 110a is already inserted into the metal bushing 110. Furthermore, the metal bushing can comprise a third section 1f10b, which is shaped as a polygon, for example, a hexagon, to form a suitable mechanical connection point, for example, for the engagement of a tool.

[0047] Fig. Figure 2 shows a 3D representation of the power rail 100. Fig. 1a with metal bushing 110 joined into the opening 101 by means of rotary friction welding, wherein a burr 102 is visible in the busbar 100.

[0048] The metal bushing 110 is inserted into the opening 101 of the busbar 100. During the insertion process, a burr 102 was formed on the busbar 100, which is to be removed. Fig. 2 shows the ring in the connection between conductor rail 100 and metal bushing 110, in which the burr 102 was formed.

[0049] Fig. Figure 3 shows a schematic representation of a method 300 according to the invention for removing a burr.

[0050] Method 300, also referred to here as methodology, serves to remove a burr 102 which is formed during the rotational joining of a metal bushing 110 with a hollow cylindrical section 110a into an opening 101 of a busbar 100 provided for joining the metal bushing 110, as described above. Fig. 1a, Fig. 1b and Fig. 2 described.

[0051] Procedure 300 comprises the following steps: Centering (301) one or more cutting wheels 202 around the opening 111 of the hollow cylindrical section 110a of the metal bushing 110; and

[0052] Driving 302 of one or more cutting wheels 202 to perform a cutting motion along the burr 102 of the conductor rail 100 in order to remove the burr 102, wherein the cutting motion includes both a rotational movement around the opening 111 of the hollow cylindrical section 110a of the metal bushing 110 and a feed movement towards the burr 102.

[0053] An example of such a cutting wheel 202 is shown in the following. Fig. Figures 4 to 7 illustrate the method 300. This method is described in general terms and can be applied not only to one cutting wheel 202, but to several cutting wheels 202. The one or more cutting wheels 202 can be mounted on a shaft 201, as shown, for example, in Figures 4 to 7 below, or there may be no shaft and the cutting wheels 202 may be arranged in a self-centering manner relative to each other, for example, mounted on a suspension.

[0054] The rotational movement is rotationally symmetrical around the opening 111 of the hollow cylindrical section 110a of the metal bushing 110, i.e. around a center of this opening.

[0055] In one embodiment of the method 300, the one or more cutting wheels 202 comprise at least three cutting wheels 202 (not shown in the figures) which are arranged symmetrically to each other and center themselves around the opening 111 of the hollow cylindrical section 110a of the metal bushing 110 301.

[0056] The at least three cutting wheels 202 are arranged, for example, at equal distances from each other and at equal distances from the opening 111 of the hollow cylindrical section 110a of the metal bushing 110.

[0057] In one embodiment of method 300, the centering of one or more cutting wheels 202 is carried out via a shaft 201, as in the Fig. Figures 4 to 7 show the one or more cutting wheels 202 attached to it. For this purpose, the shaft 201 is inserted into the opening 111 of the hollow cylindrical section 110a of the metal bushing 110 to center the one or more cutting wheels 202, as shown in the Fig. Figures 4 to 7 are shown as examples. With three or more cutting wheels 202, such a shaft 201 is not required, as the cutting wheels can then self-center.

[0058] The procedure 300 can further include the following step: Applying a delivery force 210, for example as shown in Fig. 6, on the one or more cutting wheels 202, to execute the feed movement of the one or more cutting wheels 202 and to press the one or more cutting wheels 202 against the burr 102. The feed force 210 is in the example of the Fig. Figure 6 shows only one cutting wheel 202. With multiple cutting wheels 202, a corresponding feed force 210 can be applied to each cutting wheel 202.

[0059] Method 300 may further comprise the following step: mounting one or more cutting wheels 202 on a bearing 203, 204 (see the Fig. 4 to 7) with an engagement element 205, such that the respective cutting wheel 202 is rotatably mounted and can be moved towards the burr 102; and exerting a force on the engagement element 205 to perform the rotary movement and the moving movement.

[0060] The bearing 203, 204 can comprise a rotary bearing 203 for performing the rotary movement of the respective cutting wheel 202 and a tilting bearing 204 for performing the feed movement of the respective cutting wheel 202 towards the burr 102, as shown in the Fig. Figures 4 to 7 are shown for a cutting wheel. In the case of multiple cutting wheels 202, each cutting wheel 202 can have a corresponding rotary bearing 203 and a corresponding tilting bearing 204.

[0061] The tilting bearing 204 can, for example, comprise a rotationally symmetrical section 204a, as shown in Fig. 7 shown, to which the respective cutting wheel 202 is rotatably attached, so that the respective cutting wheel 202 performs a rotational movement about the rotationally symmetrical section 204a of the tilting bearing 204 when the rotary bearing 203 rotates, so that the respective cutting wheel 202 is uniformly loaded during the cutting movement along the burr 102.

[0062] The procedure described here can be used in a computer program or computer program product. Such a computer program comprises instructions that, when executed by a computer, cause it to perform the procedure 300 as described above.

[0063] Fig. Figure 4 shows a 3D representation of a deburring tool 200 according to the invention.

[0064] The deburring tool 200 is used to remove a burr 102 which is formed during the rotary joining of a metal bushing 110 with a hollow cylindrical section 110a into an opening 101 of a busbar 100 provided for joining the metal bushing 110, as shown in the Fig. 1a, Fig. 1b and Fig. 2 shown.

[0065] The deburring tool 200 comprises one or more cutting wheels 202 (where in Fig. 4 (only one cutting wheel is shown), which can be placed centered around the opening 111 of the hollow cylindrical section 110a of the metal bushing 110.

[0066] The deburring tool 200 includes a mechanism for driving one or more cutting wheels 202 to perform a cutting motion along the burr 102 of the busbar 100 in order to remove the burr 102.

[0067] The cutting movement includes both a rotary movement around the opening 111 of the hollow cylindrical section 110a of the metal bushing 110 and a feed movement towards the burr 102.

[0068] In an exemplary embodiment, as in Fig. As shown in Figure 4, the deburring tool 200 comprises a shaft 201 for insertion into an opening 111 of the hollow cylindrical section 110a of the metal bushing 110, as for example in Fig. 2 is shown, formed.

[0069] In the embodiment of the Fig. 4 The deburring tool 200 comprises a single cutting wheel 202, which is movably attached to the shaft 201 and is designed to perform a cutting motion along the burr 102 of the busbar 100 when the shaft 201 is inserted into the opening 111 of the hollow cylindrical section 110a of the metal bushing 110, in order to remove the burr 102. It is understood that Fig. 4 shows only one example with a cutting wheel; there can also be several cutting wheels that cut the burr 102 simultaneously.

[0070] Fig. Figure 5 shows a 3D representation of the deburring tool 200 according to the invention. Fig. 4, which is inserted into the opening 101 of the busbar 100 provided for inserting the metal bushing Fig. 2 is plugged in.

[0071] The deburring tool 200 corresponds to the one described above. Fig. The deburring tool 200 described in section 4 is located here. Fig. 5 is inserted into the opening 101 of the busbar 100 provided for inserting the metal bushing 110.

[0072] As described above, in this exemplary embodiment, the deburring tool 200 comprises a shaft 201 designed for insertion into an opening 111 of the hollow cylindrical section 110a of the metal bushing 110; and a cutting wheel 202 movably attached to the shaft 201, designed to perform a cutting motion along the burr 102 of the busbar 100 when the shaft 201 is inserted into the opening 111 of the hollow cylindrical section 110a of the metal bushing 110, in order to remove the burr 102.

[0073] The cutting wheel 202 is designed to perform both a rotary movement around the shaft 201 and a tilting movement towards the burr 102 in order to remove the burr 102.

[0074] The deburring tool 200 comprises a rotary bearing 203, which is designed to support the cutting wheel 202 on the shaft 201 and to perform the rotary movement of the cutting wheel 202 around the shaft 201.

[0075] The deburring tool 200 additionally includes a tilting bearing 204, which is formed on the rotary bearing 203 and is designed to perform the tilting movement of the cutting wheel 202 towards the burr 102.

[0076] The tilting bearing 204, for example, comprises a rotationally symmetrical section 204a to which the cutting wheel 202 is rotatably attached, so that the cutting wheel 202, when the rotary bearing 203 rotates, performs a rotational movement about the rotationally symmetrical section 204a of the tilting bearing 204, so that the cutting wheel 202 is uniformly loaded during the cutting movement along the ridge 102.

[0077] The tilting bearing 203 can, for example, have an engagement element 205 configured to exert a lever force 210 on the cutting wheel 202, as shown in Fig. 5 shown in more detail to execute the tilting movement of the cutting wheel 202 and to press the cutting wheel 202 against the burr 102.

[0078] The engagement element 205 can further be configured to exert a rotational force 211 on the rotary bearing 203, as shown in Fig. 6 shown in more detail to execute the rotary movement of the cutting wheel 202 around the shaft 201.

[0079] The engagement element 205 can, for example, be a handle, as in the Fig. 4 and Fig. Figure 5 shows the deburring tool 200 being manually operated. Alternatively, the engagement element 205 can be a machine-operated element, allowing the deburring tool 200 to be operated mechanically. For example, the deburring tool 200 can be inserted into a machine tool via the shank 201, which can then apply the cutting force appropriately via the engagement element 205.

[0080] The deburring tool 200 can also have a stop element 206 configured to hinder or stop the insertion of the shaft 201 into the opening 111 of the hollow cylindrical section 110a of the metal bushing 110 from a predefinable position. The stop element 206 can be a part of the shaft 201 that has a larger diameter than the opening 111 of the hollow cylindrical section 110a of the metal bushing 110.

[0081] Fig. Figure 6 shows a schematic representation of the operating principle of the deburring tool 200 according to the invention.

[0082] The deburring tool 200 corresponds to the one described above. Fig. 5 deburring tool 200 already described.

[0083] In Fig. Figure 6 shows in more detail that the tilting bearing 203 has an engagement element 205 which is designed to exert a lever force 210 on the cutting wheel 202 in order to perform the tilting movement of the cutting wheel 202 and to press the cutting wheel 202 against the burr 102.

[0084] Furthermore, in Fig. Figure 6 shows in more detail that the engagement element 205 is designed to exert a rotational force 211 on the rotary bearing 203 in order to perform the rotary movement of the cutting wheel 202 around the shaft 201.

[0085] Furthermore, in Fig. 6 the cutting motion 212 of the cutting wheel 202 is shown in more detail.

[0086] By applying slight downward pressure (arrow direction or lever force 210 in Fig. 6) The cutting wheel 202 is pressed against the edge with the burr 102. A rotary motion allows the cutting wheel 202 to be moved along the burr 102. Because the cutting wheel 202 is mounted on bearings, it can rotate during this movement. This ensures that the cutting edge of the cutting wheel 202 is subjected to even stress.

[0087] Fig. Figure 7 shows a sectional view of the deburring tool 200 according to the invention.

[0088] The deburring tool 200 corresponds to the one mentioned above. Fig. 5 and Fig. 6 already described deburring tool 200.

[0089] In Fig. Figure 7 shows the tilting bearing 204 in section, which is formed on the rotary bearing 203 and is designed to execute the tilting movement of the cutting wheel 202 towards the burr 102.

[0090] The tilting bearing 204 comprises a rotationally symmetrical section 204a to which the cutting wheel 202 is rotatably attached, so that the cutting wheel 202, when the rotary bearing 203 rotates, performs a rotational movement about the rotationally symmetrical section 204a of the tilting bearing 204, so that the cutting wheel 202 is uniformly loaded during the cutting movement along the ridge 102.

[0091] In Fig. Figure 7 shows the engagement element 205 in section, which is formed on the tilting bearing 204 and is designed to exert a lever force 210, also called a feed force, on the cutting wheel 202, as shown above. Fig. 6 described in order to execute the tilting movement, also called the feed movement, of the cutting wheel 202 and to move the cutting wheel 202 against the burr 102 (not in Fig. 7 shown) to press.

[0092] In a further embodiment, which is not shown in the figures, the deburring tool 200 comprises one or more further cutting wheels 202, which are movably attached to the shaft 201 together with the cutting wheel 202, and are designed to perform corresponding cutting movements along the burr 102 of the busbar 100 together with the cutting wheel 202 in order to remove the burr 102.

[0093] For example, one or more additional cutting wheels 202 and the cutting wheel 202 can be attached to the shaft 202 at equal distances from each other and at equal distances from a longitudinal axis 207 of the shaft 202. REFERENCE MARK LIST 110 busbar 101 Opening of the busbar, provided for inserting the metal bushing 102 degrees 110 metal bushing, copper bushing 110a hollow cylindrical section of the metal bushing 111 Opening of the hollow cylindrical section of the metal bushing 200 deburring tools 201 shaft 202 cutting wheel 203 swivel bearings 204 tilting bearings 204a Rotationally symmetric section of the tilting bearing 205 Intervention element 206 Stopper element 207 Longitudinal axis of the shaft 210 Leverage 211 Torque 300 methods for removing a burr 301 Centering one or more cutting wheels 302 Driving one or more cutting wheels to perform a cutting motion

Claims

[1] Method (300) for removing a burr (102) which is formed during the rotational joining of a metal bushing (110) with a hollow cylindrical section (110a) into an opening (101) of a busbar (100) provided for joining the metal bushing (110), wherein the method (300) comprises: Centering (301) one or more cutting wheels (202) around the opening (111) of the hollow cylindrical section (110a) of the metal bushing (110); and Driving (302) the one or more cutting wheels (202) to perform a cutting motion along the burr (102) of the conductor rail (100) in order to remove the burr (102), wherein the cutting motion includes both a rotational movement around the opening (111) of the hollow cylindrical section (110a) of the metal bushing (110) and a feed movement towards the burr (102). [2] Method (300) according to claim 1, wherein the one or more cutting wheels (202) comprise at least three cutting wheels (202) arranged symmetrically to each other and center themselves around the opening (111) of the hollow cylindrical section (110a) of the metal bushing (110) (301). [3] Method (300) according to claim 2, wherein the at least three cutting wheels (202) are arranged at equal distances from each other and at equal distances from the opening (111) of the hollow cylindrical section (110a) of the metal bushing (110). [4] Method (300) according to any one of the preceding claims, wherein the centering of the one or more cutting wheels (202) is carried out via a shaft (201) to which the one or more cutting wheels (202) are attached; wherein the shaft (201) is inserted into the opening (111) of the hollow cylindrical section (110a) of the metal bushing (110) for centering (301) the one or more cutting wheels (202). [5] Method (300) according to any of the preceding claims, applying a feed force (210) to the one or more cutting wheels (202) in order to carry out the feed movement of the one or more cutting wheels (202) and to press the one or more cutting wheels (202) against the burr (102). [6] Method (300) according to any one of the preceding claims, comprising: Mounting each of the cutting wheels (202) of one or more cutting wheels (202) on a bearing (203, 204) with an engagement element (205), such that the respective cutting wheel (202) is mounted rotatably and adjustable towards the burr (102); and Applying a force to the engagement element (205) to perform the rotary movement and the feed movement. [7] Method (300) according to claim 6, wherein the bearing (203, 204) comprises a rotary bearing (203) for performing the rotary movement of the respective cutting wheel (202) and a tilting bearing (204) for performing the feed movement of the respective cutting wheel (202) towards the burr (102). [8] Method (300) according to claim 7, wherein the tilting bearing (204) comprises a rotationally symmetric section (204a) to which the respective cutting wheel (202) is rotatably attached, so that the respective cutting wheel (202) performs a rotational movement about the rotationally symmetric section (204a) of the tilting bearing (204) when the rotary bearing (203) is rotated and the respective cutting wheel (202) is uniformly loaded during the cutting movement along the burr (102). [9] Computer program comprising instructions which, when the program is executed by a computer, cause it to perform the method according to the preceding claims. [10] Deburring tool (100) for removing a burr (102) which is formed during the rotary joining of a metal bushing (110) with a hollow cylindrical section (110a) into an opening (101) of a busbar (100) provided for joining the metal bushing (110), wherein the deburring tool (200) comprises the following: one or more cutting wheels (202) that can be positioned centered around the opening (111) of the hollow cylindrical section (110a) of the metal bushing (110); and an engagement for driving the one or more cutting wheels (202) to perform a cutting movement along the burr (102) of the conductor rail (100) in order to remove the burr (102), wherein the cutting movement includes both a rotational movement around the opening (111) of the hollow cylindrical section (110a) of the metal bushing (110) and a feed movement towards the burr (102).

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