Fixing jig for rotor cutting

Abstract

The utility model provides a kind of fixed clamp for rotor cutting.The fixed clamp for rotor cutting is used to fix the rotor when cutting the rotor with built-in magnet using band saw machine, with basic part;Bottom surface support part for supporting the bottom surface of the rotor is installed on the basic part;And at least four side surface support parts for supporting the side surface of the rotor protrude from the bottom surface support part.The fixed clamp for rotor cutting of the utility model can fix the rotor when cutting the rotor using band saw machine, so that the rotor does not shake left and right when it contacts with band saw blade.

Description

Technical Field

[0001] This utility model relates to a fixing clamp for rotor cutting, used to fix the rotor when cutting a rotor with built-in magnets using a band saw. Background Technology

[0002] In hybrid electric vehicles, magnets are built into the rotor that makes up the electric motor. To inspect these magnets, the rotor must be cut open to remove them. In this case, a band saw, which uses a rotating band saw blade to cut the object, is typically used to cut the rotor.

[0003] When cutting a rotor with a band saw, if the operator holds the rotor with their hand and pushes it onto the band saw blade for cutting, care must be taken to avoid contact between the hand and the band saw blade. At the same time, care must be taken to prevent the rotor from bouncing up and down when it comes into contact with the band saw blade.

[0004] Therefore, for safety reasons, in the past, a rotor cutting clamp made of wood chips or the like was often used to hold the side of the rotor down and then push the rotor onto the band saw blade.

[0005] However, when using conventional rotor cutting fixtures, the rotor pressed against the band saw blade may wobble from side to side due to vibrations during cutting. In this case, problems may occur such as the band saw blade deviating from the cutting position of the rotor, or the rotor leaving the band saw blade, causing the cutting operation to stop. Utility Model Content

[0006] In view of the above situation, the purpose of this utility model is to provide a rotor cutting fixing fixture that can fix the rotor when performing rotor cutting operation using a band saw, so that the rotor will not sway left and right when it comes into contact with the band saw blade.

[0007] As a technical solution to solve the above-mentioned technical problems, the present invention provides a fixing clamp for rotor cutting. The fixing clamp for rotor cutting is used to fix the rotor when cutting a rotor with built-in magnets using a band saw. It is characterized by having a base part; a bottom support part installed on the base part for supporting the bottom surface of the rotor; and at least four side support parts protruding from the bottom support part for supporting the sides of the rotor.

[0008] In addition, in the rotor cutting fixture of the present invention, it is preferable that the at least four side support portions include a movable side support portion, which is configured to be able to move close to the rotor and also move away from the rotor.

[0009] In addition, in the above-mentioned rotor cutting fixing fixture of the present invention, the movable side support includes a slit formed in the bottom support; a nut fitted in the slit and movable inside the slit; and a bolt tightened on the internal thread of the nut and extending parallel to the rotation axis of the rotor.

[0010] In addition, the rotor cutting fixture of the present invention is preferably further provided with an angle adjustment part for adjusting the angle formed between the rotation shaft of the rotor and the band saw blade of the band saw.

[0011] In addition, in the above-mentioned rotor cutting fixing fixture of the present invention, it is preferred that the angle adjustment part includes a hinge that rotatably connects the bottom support part to the base part, and a retaining joint that fixes the bottom support part in a predetermined rotation position so that it cannot rotate. Attached Figure Description

[0012] Figure 1 is a schematic perspective view showing the overall structure of the rotor cutting fixture 1 according to an embodiment of the present invention.

[0013] Figure 2 is a schematic perspective view showing the structure of the side support part 4.

[0014] Figure 3 is a schematic diagram illustrating the steps of using the rotor cutting fixture 1.

[0015] Figure 4 is a schematic diagram illustrating the steps of using the rotor cutting fixture 1.

[0016] Figure 5 is a schematic diagram illustrating the steps of using the rotor cutting fixture 1.

[0017] Figure 6 is a side view showing the cutting portion of the rotor R using the rotor cutting fixture 1 in the first stage.

[0018] Figure 7 is a side view showing the cutting portion of the rotor R using the rotor cutting fixture 1 in the second stage.

[0019] Figure 8 is a side view showing the cutting portion of the rotor R using the rotor cutting fixture 1 in the third stage. Detailed Implementation

[0020] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0021] <Structure of the fixing fixture for rotor cutting>

[0022] First, the structure of the rotor cutting fixture of this embodiment will be described. Figure 1 is a schematic perspective view showing the overall structure of the rotor cutting fixture 1 of this embodiment. As shown in Figure 1, the rotor cutting fixture 1 includes a base part 2, a bottom support part 3, four side support parts 4, and an angle adjustment part 5.

[0023] The base section 2 can be placed on the workbench of the band saw and can be held by the operator when using the rotor cutting clamp 1. The base section 2 is composed of multiple assembly tubes (pipe fittings with plastic covering on the surface of steel pipes) connected to each other. As shown in Figure 1, the base section 2 has a pair of parallel longitudinal tubes 6, end transverse tubes 7 connecting one end of each of the pair of longitudinal tubes 6, intermediate transverse tubes 8 connecting the middle portions of each of the pair of longitudinal tubes 6, and a pair of left and right inclined tubes 9 extending obliquely upward from each intermediate transverse tube 8.

[0024] The bottom support portion 3 is used to place the rotor and supports the bottom surface of the rotor. The bottom support portion 3 is composed of assembly tubes, as shown in FIG1. ​​The bottom support portion 3 includes a pair of left and right rotating tubes 10 extending in a direction parallel to the longitudinal tube 6 of the base portion 2 when viewed from above. The base ends of each of the left and right rotating tubes 10 are rotatably connected to the front ends of the left and right inclined tubes 9 respectively through a first hinge 16 constituting the angle adjustment portion 5 described later.

[0025] Four side supports 4 are used to support the sides (i.e., the outer circumferential surface of the rotor) of the rotor placed on the bottom support 3, thus preventing the rotor from swaying left and right. Figure 2 is a schematic perspective view showing the structure of the side supports 4. These side supports 4 include a pair of fixed side supports 11 on the left and right and a pair of movable side supports 12 on the left and right. In addition, Figure 2 shows the state after a portion of the rotor R has been cut off.

[0026] The fixed side support 11 is composed of an assembly tube, as shown in Figure 2, and its base end is fixed to the base end of the rotating tube 10. The pair of fixed side supports 11 are configured to protrude upward from the bottom support 3 respectively.

[0027] As shown in Figure 2, the movable side support 12 includes a slit 13 formed by cutting the rotating tube 10 along its length, a T-slot nut (not shown) fitted into the slit 13 and movable within the slit 13, and a bolt 15 tightened onto the internal thread of the T-slot nut and extending upward through the slit 13. Thus, the left and right pairs of movable side supports 12 are configured to move towards and away from the left and right pairs of fixed side supports 11, respectively. Here, the slit 13 is set large enough in the length direction to ensure that the movable side supports 12 can support the sides of various rotors R with different diameters, and can also support the sides of a cut rotor R.

[0028] The angle adjustment unit 5 is used to adjust the angle formed between the rotation axis of the rotor R, which is placed on the bottom support 3, and the band saw blade of the band saw. As shown in Figure 1, the angle adjustment unit 5 includes a pair of left and right first hinges 16, a connecting pipe 17, a height positioning pipe 18, a first retaining joint 19, and a second retaining joint 20.

[0029] The first hinge 16 is used to rotatably connect the bottom support part 3 to the base part 2. The left and right pairs of first hinges 16 respectively rotatably connect the front ends of the left and right pairs of inclined tubes 9 constituting the base part 2 to the base ends of the left and right pairs of rotating tubes 10 constituting the bottom support part 3.

[0030] The connecting pipe 17 is used to connect the left and right pairs of rotating pipes 10 to each other. The connecting pipe 17 is composed of an assembly pipe, which extends in a direction approximately perpendicular to the rotating pipes 10 as shown in FIG1, and the front ends of the left and right pairs of rotating pipes 10 are respectively fixed in the middle part of their length direction.

[0031] The height positioning tube 18 is used to determine the height position of the connecting tube 17, and thus the height position of the front ends of the left and right pair of rotating tubes 10. This height positioning tube 18 is constructed from an assembly tube, as shown in Figure 1, and can be bent within a 180° range at the location where the second hinge 21 is provided (its middle section). The height positioning tube 18 is thus constructed such that its base end is rotatably connected to the middle section of the connecting tube 17, and its front end is a free end.

[0032] The first retaining connector 19 is used to fix the pair of left and right rotating tubes 10 constituting the bottom support part 3 into a state where they cannot rotate in the first tilted posture P1 described later. Although not shown in detail in the figure, the first retaining connector 19 is a metal fixing component that can fix the front end of the height positioning tube 18 by means of bolts or the like. As shown in Figure 1, the first retaining connector 19 is installed at the middle part of the length direction of the middle transverse tube 8 constituting the base part 2. Furthermore, the material, shape, number, installation position, and fixing method of the first retaining connector 19 can be appropriately designed within the range that can achieve its function.

[0033] The second retaining joint 20 is used to fix the pair of left and right rotating tubes 10 constituting the bottom support part 3 into a state where they cannot rotate in the second tilted posture P2 and the horizontal posture P3 described later. Although not shown in detail in the figure, the second retaining joint 20 is a metal fixing component that can fix the base end of the height positioning tube 18 or the second hinge 21 by means of bolts or the like. As shown in Figure 1, the second retaining joint 20 is installed at the middle part of the length direction of the end transverse tube 7 constituting the base part 2. Furthermore, the material, shape, number, installation position, and fixing method of the second retaining joint 20 can be appropriately designed within the range that can achieve its function.

[0034] <Functions and Effects>

[0035] Next, the usage steps, functions, and effects of the rotor cutting fixture 1 according to this embodiment will be explained. Figures 3 to 5 are schematic diagrams illustrating the usage steps of the rotor cutting fixture 1.

[0036] The operator performing the cutting operation on rotor R first places the rotor cutting fixture 1 on the worktable T of band saw O, away from the band saw blade C, as shown in Figure 3. Then, the operator pulls the height positioning tube 18 into a straight line and fixes its front end to the first retaining joint 19. At this time, the left and right rotating tubes 10 connected to the connecting tube 17 are fixed in an inverted state with their respective front ends higher than their respective base ends (i.e., the first inverted state P1) so that they cannot rotate.

[0037] In this state, the operator places the rotor R to be cut on the bottom support 3, and while supporting the side S of the rotor R with a pair of fixed side supports 11, moves the pair of movable side supports 12 to a position in contact with the side S of the rotor R. Thus, the rotor R is tilted at an acute angle between its rotation axis and the band saw C, and the side S is supported by the four side supports 4.

[0038] Next, the operator holds the left and right ends of the transverse tube 7 with both hands and pushes the rotor cutting fixture 1 forward (i.e., towards the band saw C). Figures 6 to 8 are side views showing the cutting part of the rotor R using the rotor cutting fixture 1. As shown in Figure 6, the rotor R, placed on the bottom support 3, is pushed forward along with the rotor cutting fixture 1. When its upper edge U contacts the band saw C, the portion shown by the double-dotted line in Figure 6 is cut. At this time, as described above, the side surface S of the rotor R is supported by the four side support parts 4, so the rotor R pressing on the band saw C is less likely to wobble from side to side. Therefore, it is possible to prevent the cutting position of the rotor R from deviating or the rotor R from dislodging from the band saw C, thus stopping the cutting operation. In addition, since only the upper edge U of the rotor R contacts the band saw C, the contact area is reduced compared to the case where the side surface S of the rotor R contacts the band saw C along its entire axial length, thereby reducing the generated friction. This not only improves the cutting efficiency of the band saw rotor R, but also reduces the wear of the band saw blade C.

[0039] Next, the operator pulls the rotor cutting clamp 1 back (i.e., away from the band saw C). This causes the rotor R to move away from the band saw C, and the band saw C stops cutting the rotor R.

[0040] Next, the operator releases the first retaining joint 19 from fixing the front end of the height positioning tube 18. Then, using the first hinge 16 as a fulcrum, the operator rotates the left and right pairs of rotating tubes 10 respectively, so that they are in an inclined position where the front end is lower than the base end, as shown in FIG. 4 (i.e., the second inclined position P2). At this time, while maintaining a straight extension, the height positioning tube 18 rotates with the connecting tube 17 as a fulcrum so that its front end protrudes to the outside of the base part 2. Next, the operator fixes the base end of the height positioning tube 18 to the second retaining joint 20. Thus, the left and right pairs of rotating tubes 10 are fixed in a state where they cannot rotate in the second inclined position P2. At this time, the rotor R, supported on the bottom support part 3, is in an inclined state where its rotation axis forms an obtuse angle with the band saw C.

[0041] Next, the operator holds the left and right ends of the transverse tube 7 with both hands and pushes the rotor cutting fixture 1 forward (i.e., towards the band saw C). As shown in Figure 7, the rotor R, placed on the bottom support 3, is pushed forward along with the rotor cutting fixture 1. When its lower edge D contacts the band saw C, the portion shown by the double-dotted line in Figure 7 is cut. In this case, the effects and benefits resulting from the support of the side surface S of the rotor R, and the effects and benefits resulting from the smaller contact area between the rotor R and the band saw C, are the same as those described above for Figure 6.

[0042] Next, the operator pulls the rotor cutting clamp 1 back (i.e., away from the band saw C). This causes the rotor R to move away from the band saw C, thus stopping the band saw C from cutting the rotor R.

[0043] Next, the operator releases the base end of the height positioning tube 18 from the state where it is fixed by the second retaining joint 20. Then, using the first hinge 16 as a fulcrum, the operator rotates the left and right pairs of rotating tubes 10 respectively, so that they are in a horizontal position where the front end and the base end are at the same height as shown in Figure 5 (i.e., horizontal position P3). At this time, the height positioning tube 18 bends 180° at the second hinge 21, thus becoming a folded state. Then, the operator fixes the second hinge 21 of the height positioning tube 18 to the second retaining joint 20. Thus, the left and right pairs of rotating tubes 10 are fixed in a state where they cannot rotate in the horizontal position P3. At this time, the rotor R, which is supported on the bottom support part 3, is in a state where its rotation axis is parallel to the band saw C.

[0044] Next, the operator holds the left and right ends of the transverse tube 7 with both hands and pushes the rotor cutting fixture 1 forward (i.e., towards the band saw C). As shown in Figure 8, the rotor R, placed on the bottom support 3, is pushed forward along with the rotor cutting fixture 1. When the protrusion at the middle of its height direction contacts the band saw C, the portion shown by the double-dotted line in Figure 8 is cut. In this case, the effects and benefits resulting from the support of the side S of the rotor R, and the effects and benefits resulting from the smaller contact area between the rotor R and the band saw C, are the same as those explained with reference to Figure 6.

[0045] Next, the operator pulls the rotor cutting clamp 1 back (i.e., away from the band saw C). This moves the rotor R away from the band saw C, stopping the band saw C from cutting the rotor R. At this point, the cutting operation on the rotor R is complete, and the magnet (not shown) built into the rotor R can be removed.

[0046] Next, the operator moves the pair of movable side supports 12 on the left and right sides toward the side S away from the rotor R, thereby releasing the support of the movable side supports 12 on the rotor R. Then, the operator removes the rotor R from the bottom support 3 and removes the internal magnet (not shown in detail) from the cut rotor R. Alternatively, the step of removing the magnet from the rotor R can be performed before removing the rotor R from the bottom support 3.

[0047] <Variation Example>

[0048] However, the technical scope of this utility model is not limited to the above-described embodiments. Various modifications can be made without departing from the spirit of this utility model as defined in the claims. For example, the above-described embodiments of this utility model can be modified as follows.

[0049] In the above embodiment, four side support portions 4 are used to support the side surface S of the rotor R to prevent it from swaying left and right. However, the number of side support portions 4 is not limited to four, and can be five or more. In addition, in this embodiment, two movable side support portions 12 are provided as side support portions 4. However, as long as it can be ensured that the rotor R can be detachably mounted on the bottom support portion 3, the side support portion 4 can include at least one movable side support portion 12. Alternatively, all side support portions 4 can be provided as movable side support portions 12.

[0050] Furthermore, in the above embodiment, the movable side support 12 is constituted by the slit 13, the T-slot nut, and the bolt 15. However, the present invention is not limited to this; the movable side support 12 can adopt any structure, as long as it can move close to the rotor R and away from the rotor R. For example, although not shown in detail, the movable side support 12 can also be constituted by a guide rail provided along the rotating tube 10 and a slider that can move back and forth along the guide rail.

[0051] In the above embodiment, the angle adjustment part 5 is constituted by a pair of left and right first hinges 16, a connecting pipe 17, a height positioning pipe 18, a first retaining joint 19, and a second retaining joint 20. However, the present invention is not limited to this, and the angle adjustment part 5 can adopt any structure, as long as it can adjust the angle formed between the rotation axis of the rotor R and the band saw C. For example, although not shown in detail, the angle adjustment part 5 can also be constituted by a hinge that rotatably connects the bottom support part 3 to the base part 2, and a retaining joint that fixes the bottom support part 3 in a predetermined rotational position so that it cannot rotate.

Claims

1. A fixing fixture for cutting rotors, used to fix a rotor containing a built-in magnet when cutting it with a band saw, characterized in that: have Basic Department; A bottom support portion mounted on the base to support the bottom surface of the rotor; and At least four side supports protruding from the bottom support portion to support the sides of the rotor.

2. The rotor cutting fixture as described in claim 1, characterized in that: The at least four side supports include movable side supports, which are configured to move both close to and away from the rotor.

3. The rotor cutting fixture as described in claim 2, characterized in that: The movable side support includes a slit formed in the bottom support; a nut fitted into the slit and movable inside the slit; and a bolt tightened onto the internal thread of the nut and extending parallel to the rotation axis of the rotor.

4. The rotor cutting fixture as described in any one of claims 1 to 3, characterized in that: It also includes an angle adjustment unit for adjusting the angle formed between the rotating shaft of the rotor and the band saw blade of the band saw.

5. The rotor cutting fixture as described in claim 4, characterized in that: The angle adjustment unit includes a hinge that rotatably connects the bottom support to the base, and a retaining joint that fixes the bottom support in a predetermined rotational position so that it cannot rotate.

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