Stator manufacturing equipment

Abstract

This technology eliminates the need to change the base stage and allows for the continuous manufacturing of multiple stators with different coil end lengths. [Solution] The stator manufacturing apparatus according to this disclosure comprises a lifter 2 and a base 1 placed on the lifter 2. The base 1 can hold a workpiece W10. The base 1 comprises a substantially cylindrical base body 1A and a plurality of extension pieces 1B extending radially from the lower end of the outer peripheral surface of the base body 1A. The lifter comprises a lifter body 2A that is supported so as to be horizontally rotatable and is substantially cylindrical, and a plurality of first base holding parts 2B and a plurality of second base holding parts 2C extending radially from the outer peripheral surface of the lifter body 2A. Each second base holding part 2C is positioned on the outer peripheral surface of the lifter body 2A at a predetermined distance from each first base holding part 2B on the outer peripheral surface of the lifter body 2A. The heights of the plurality of first base holding parts 2B and the heights of the plurality of second base holding parts 2C are different.

Description

Technical Field

[0001] This disclosure relates to a stator manufacturing apparatus.

Background Art

[0002] The stator manufacturing apparatus disclosed in Patent Document 1 has a fixing jig for fixing a stator.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The inventors of the present application have discovered the following technical problems. An example of such a stator manufacturing apparatus includes, as a fixing jig, a pedestal corresponding to the coil end length. Using such an example of a stator manufacturing apparatus, it is required to continuously manufacture a plurality of stators having different coil end lengths. In such manufacturing, it is necessary to change the pedestal according to the coil end length.

[0005] This disclosure has been made in view of the above-described problems, and provides a technique that can continuously manufacture a plurality of stators having different coil end lengths without the need to change the pedestal.

Means for Solving the Problems

[0006] The stator manufacturing apparatus according to this disclosure includes a lifter and a pedestal placed on the lifter, and in the stator manufacturing apparatus in which the pedestal can hold a workpiece the pedestal includes a substantially cylindrical pedestal body and a plurality of extending pieces extending radially from the lower end of the outer peripheral surface of the pedestal body.​​ The aforementioned lifter is A lifter body that is supported so as to be able to rotate horizontally and is substantially cylindrical in shape, The lifter body comprises a plurality of first base holding portions and a plurality of second base holding portions extending radially from the outer circumferential surface, Each second base holding portion is positioned on the outer circumferential surface of the lifter body at a predetermined distance from each first base holding portion on the outer circumferential surface of the lifter body. The heights of the plurality of first base holding parts and the heights of the plurality of second base holding parts are different, Depending on the coil end length of the workpiece, the lifter body is rotated to bring the plurality of first base holding parts or the plurality of second base holding parts into contact with the plurality of extension pieces.

[0007] Furthermore, in the stator manufacturing apparatus described above, the lifter further comprises a plurality of third base holding portions extending radially from the outer circumferential surface of the lifter body, each of which is positioned on the outer circumferential surface of the lifter body at a predetermined distance from each of the first and second base holding portions, the height of the plurality of third base holding portions differs from the height of the plurality of first and second base holding portions, and the lifter body is rotated according to the coil end length of the workpiece to bring the plurality of first base holding portions, the plurality of second base holding portions, or the plurality of third base holding portions into contact with the plurality of extension pieces. [Effects of the Invention]

[0008] According to this disclosure, there is no need to change the base stage, and multiple stators with different coil end lengths can be manufactured in succession. [Brief explanation of the drawing]

[0009] [Figure 1] This is a plan view of a stator manufacturing apparatus according to an embodiment. [Figure 2] This is a cross-sectional view along the cutting line II-II in Figure 1. [Figure 3]It is a plan view of the main part of a stator manufacturing apparatus according to an embodiment. [Figure 4] It is a block diagram showing a control configuration of a stator manufacturing apparatus according to an embodiment. [Figure 5] It is a plan view showing an operation of a stator manufacturing apparatus according to an embodiment. [Figure 6] It is a cross-sectional view taken along the cutting line VI-VI of FIG. 5. [Figure 7] It is a flowchart showing an example of a method for manufacturing a stator according to an embodiment. [Figure 8] It is a schematic view showing a method for manufacturing a stator according to an embodiment. [Figure 9] It is a schematic view showing a method for manufacturing a stator according to an embodiment.

Embodiments for Carrying Out the Invention

[0010] Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments. Also, for clarity of explanation, the following description and drawings are simplified as appropriate.

[0011] <Embodiment> An embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a plan view of a stator manufacturing apparatus according to an embodiment. FIG. 2 is a cross-sectional view taken along the cutting line II-II of FIG. 1. FIG. 3 is a plan view of the main part of a stator manufacturing apparatus according to an embodiment. FIG. 4 is a block diagram showing a control configuration of a stator manufacturing apparatus according to an embodiment. FIG. 5 is a plan view showing an operation of a stator manufacturing apparatus according to an embodiment. FIG. 6 is a cross-sectional view taken along the cutting line VI-VI of FIG. 5.

[0012] Of course, the right-handed XYZ coordinates shown in FIG. 1 and other drawings are for convenience in explaining the positional relationship of the components. Usually, the positive Z-axis direction is vertically upward, the XY plane is a horizontal plane, and is common among the drawings.

[0013] As shown in FIGS. 1 and 2, the stator manufacturing apparatus 10 includes a pedestal 1 and a lifter 2. The pedestal 1 is placed on the lifter 2.

[0014] The pedestal 1 includes a pedestal body 1A and a plurality of extending pieces 1B. The pedestal body 1A is a substantially cylindrical body having an axis Z1. The plurality of extending pieces 1B extend radially from the lower end of the outer peripheral surface of the pedestal body 1A. When viewed from above the pedestal 1, the plurality of extending pieces 1B may be arranged at a predetermined interval on the outer peripheral surface of the pedestal body 1A.

[0015] The pedestal 1 according to the present embodiment includes three extending pieces 1B. When viewed from above the pedestal 1, the three extending pieces 1B may be arranged at equal intervals on the outer peripheral surface of the pedestal body 1A. In other words, when viewed from above the pedestal 1, the angle formed by the straight lines connecting the adjacent extending pieces 1B and the axis Z1 intersecting at the axis Z1 may be 120 degrees.

[0016] [[ID=ID=12]]As shown in FIGS. 1 to 3, the lifter 2 includes a lifter body 2A, a plurality of first pedestal holding parts 2B, and a plurality of second pedestal holding parts 2C. The lifter body 2A is a substantially columnar body. The lifter body 2A and the pedestal body 1A may have the same axis Z1. The lifter body 2A is supported so as to be horizontally rotatable. The lifter body 2A is supported so as to be rotatable around the axis Z1. The plurality of first pedestal holding parts 2B and the plurality of second pedestal holding parts 2C extend radially from the outer peripheral surface of the lifter body 2A. The plurality of first pedestal holding parts 2B and the plurality of second pedestal holding parts 2C may extend in a substantially L shape in a cross section including the axis Z1. The cross section including the axis Z1 includes, for example, the ZX plane, the ZY plane, etc. Each first pedestal holding part 2B may be arranged at a position spaced apart by a predetermined interval on the outer peripheral surface of the lifter body 2A. Each second pedestal holding part 2C may be arranged at a position spaced apart by a predetermined interval from each first pedestal holding part 2B on the outer peripheral surface of the lifter body ②. The heights of the plurality of first pedestal holding parts 2B and the heights of the plurality of second pedestal holding parts 2C are different.

[0017] The lifter 2 according to this embodiment comprises three first base holding parts 2B and three second base holding parts 2C. The three first base holding parts 2B are taller than the three second base holding parts 2C. When viewed from above the lifter body 2A, the three first base holding parts 2B are preferably arranged at equal intervals on the outer circumferential surface of the lifter body 2A. In other words, when viewed from above the lifter body 2A, the angle formed by the intersection of lines connecting adjacent first base holding parts 2B and axis Z1 at axis Z1 is preferably 120 degrees. Similarly, when viewed from above the lifter body 2A, the three second base holding parts 2C are preferably arranged at equal intervals on the outer circumferential surface of the lifter body 2A. In other words, when viewed from above the lifter body 2A, the angle formed by the intersection of the lines connecting the adjacent second base holding parts 2C and the axis Z1 at axis Z1 should be 120 degrees.

[0018] As shown in Figure 4, the stator manufacturing apparatus 10 may further include a workpiece information acquisition unit 3, a control unit 4, and a lifter rotation unit 5.

[0019] The work information acquisition unit 3 acquires information from the sensor 20. The sensor 20 is located outside the stator manufacturing apparatus 10. The information may indicate the type of workpiece held by the base 1, or the vehicle type corresponding to the workpiece. The sensor 20 may be, for example, an image sensor, and may acquire the information by reading a code directly attached to the workpiece. The code indicates the vehicle type corresponding to the workpiece to which the code is attached. The work information acquisition unit 3 may, for example, acquire a signal indicating the information from the sensor via a signal cable or the like.

[0020] The control unit 4 determines the indexing position of the lifter 2 according to the information acquired by the work information acquisition unit 3. The control unit 4 sends a control signal to the lifter rotation unit 5 according to the determined indexing position of the lifter 2. The control unit 4 is, for example, a general-purpose computer. It can be configured using a general-purpose computer. The computer includes a central processing unit (CPU), storage devices such as read-only memory (ROM) and random access memory (RAM), input / output ports, etc. The read-only memory may pre-record a table list indicating the type of workpiece held by the base 1, or the vehicle type corresponding to the workpiece and the corresponding indexing position of the lifter 2.

[0021] The lifter rotation unit 5 rotates the lifter body 2A around the axis Z1. The lifter rotation unit 5 comprises, for example, a driver and a motor. The driver receives a control signal from the control unit 4 and supplies a drive current to the motor corresponding to the control signal. The motor supplies rotational driving force to the lifter 2, causing the lifter 2 to rotate around the axis Z1. The stator manufacturing apparatus 10 may further include a moving unit that separates the base 1 and the lifter 2. The moving unit separates the base 1 and the lifter 2 while the lifter rotation unit 5 rotates the lifter body 2A around the axis Z1. As a result, contact between each first base holding part 2B and each second base holding part 2C and the base 1 can be suppressed.

[0022] The operation of the lifter rotation unit 5 will now be described. As shown in Figures 1 and 2, the three first base holding parts 2B are each in contact with the three extension pieces 1B. As shown in Figure 2, the length from the top of the base 1 to the top of the lifter body 2A is L1.

[0023] The lifter rotation unit 5 drives the lifter body 2A to rotate 180 degrees around axis Z1. As shown in Figure 5, the three second base holding parts 2C each come into contact with the three extension pieces 1B. As described above, the three first base holding parts 2B are higher than the three second base holding parts 2C. As shown in Figure 6, the length from the top of the base 1 to the top of the lifter body 2A is L2, which is shorter than L1 shown in Figure 2. In other words, as a result of the lifter rotation unit 5 driving the lifter body 2A to rotate, the length from the top of the base 1 to the top of the lifter body 2A can be shortened from L1 to L2.

[0024] <Manufacturing method> Next, a method for manufacturing a stator using the stator manufacturing apparatus 10 will be described with reference to Figures 7 to 9. Figure 7 is a flowchart showing an example of a method for manufacturing a stator according to an embodiment. Figures 8 and 9 are schematic diagrams showing a method for manufacturing a stator according to an embodiment.

[0025] The workpiece is brought into the vicinity of the stator manufacturing device 10 (Step ST1). It is preferable to bring it in using the worker's hand or a robot hand. Next, the sensor 20 acquires and detects information indicating the vehicle type corresponding to the workpiece (Step ST2).

[0026] The lifter body 2A is rotated according to the vehicle type detected by the sensor 20 (steps ST31, 32).

[0027] When the sensor 20 detects vehicle type V10, the lifter rotation unit 5 rotates the lifter body 2A, bringing the three first base holding parts 2B into contact with the three extension pieces 1B (step ST31). The three first base holding parts 2B each contact the three extension pieces 1B to hold the base 1. Here, the length from the top of the base 1 to the top of the lifter body 2A is L1.

[0028] As shown in Figure 8, the workpiece W10 corresponding to vehicle model V10 is placed on the base 1 by an operator or a robotic hand. The workpiece W10 comprises a coil W1 and a stator core W3. The stator core W3 is, for example, a plurality of stacked cylindrical plates. The coil W1 is, for example, a plurality of wires. The coil W1 is inserted into the stator core W3 and protrudes from both ends of the stator core W3. The coil W1 comprises a coil end W1A and a coil end W1B. The coil end W1A protrudes from one end of the stator core W3. The coil end length L1 is the same as the length from the top of the base 1 to the top of the lifter body 2A. The lifter body 2A can hold the stator core W3 while holding the coil end W1A.

[0029] On the other hand, when the sensor 20 detects vehicle type V20, the lifter rotation unit 5 rotates the lifter body 2A, bringing the three second base holding parts 2C into contact with the three extension pieces 1B (step ST32). The three second base holding parts 2C each contact the three extension pieces 1B to hold the base 1. Here, the length from the top of the base 1 to the top of the lifter body 2A is L2.

[0030] As shown in Figure 9, the workpiece W20 corresponding to vehicle model V20 is placed on the base 1 by an operator or a robotic hand. The workpiece W20 comprises a coil W2 and a stator core W3. The coil W2 may have the same configuration as the coil W1, except for the coil end length L2. The coil end length L2 is shorter than the coil end length L1. The coil end length L2 is the same as the length from the top of the base 1 to the top of the lifter body 2A. The lifter body 2A can hold the stator core W3 while holding the coil end W2A.

[0031] Lifter 2 is raised (step ST4). Workpiece W10 or workpiece W20 is machined (step ST5). Specifically, coil end W1B or coil end W2B is welded. As a result, the stator can be manufactured.

[0032] By repeating steps ST1 to ST5, it is not necessary to change the base 1, and stators with different coil end lengths L1 and L2 can be manufactured continuously. The stator manufacturing apparatus 10 can be suitably used in a mixed-model production line.

[0033] It should be noted that the present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from the spirit of the invention. Furthermore, the present invention may be implemented by appropriately combining the above embodiments or examples thereof. In this embodiment, the lifter rotation unit 5 rotated the lifter 2 around the axis Z1, but the operator may manually rotate the lifter 2 around the axis Z1. In this embodiment, the sensor 20 is provided outside the stator manufacturing apparatus 10, but the stator manufacturing apparatus 10 may be equipped with the sensor 20.

[0034] Furthermore, although the lifter 2 is equipped with a first base holding part 2B and a second base holding part 2C, the lifter 2 may also be equipped with a third base holding part. The height of the third base holding part is different from the height of the first base holding part 2B and the height of the second base holding part 2C. The height of the third base holding part should be determined according to the coil end lengths of the workpieces, which are different from the coil end lengths L1 and L2. These workpieces correspond to different vehicle models, V10 and V20. If the lifter 2 is equipped with a third base holding part, there is no need to change the height of the base 1, and three stators with different coil end lengths can be manufactured in succession. Similarly, if the lifter 2 is equipped with multiple base holding parts in addition to the first base holding part 2B and the second base holding part 2C, there is no need to change the height of the base 1, and four or more stators with different coil end lengths can be manufactured in succession. [Explanation of Symbols]

[0035] 10 Stator manufacturing equipment 1 base 1A Base 1B Extension piece 2 Lifters 2A Lifter Body 2B First base holding part 2C Second base holding part 3. Work Information Acquisition Unit 4. Control Unit 5. Lifter Rotation Unit 20 sensors W10, W20 Work W1, W2 coils W1A, W1B, W2A, W2B coil ends W3 stator core Z1 axis L1, L2 coil end length

Claims

1. Lifter and, The lifter is equipped with a base on which the base is placed, In a stator manufacturing apparatus in which the base can hold a workpiece, The base comprises a substantially cylindrical base body and a plurality of extensions extending radially from the lower end of the outer surface of the base body. The aforementioned lifter is A lifter body that is supported so as to be able to rotate horizontally and is substantially cylindrical in shape, The lifter body comprises a plurality of first base holding portions and a plurality of second base holding portions extending radially from the outer circumferential surface, Each second base holding portion is positioned on the outer circumferential surface of the lifter body at a predetermined distance from each first base holding portion on the outer circumferential surface of the lifter body. The heights of the plurality of first base holding parts and the heights of the plurality of second base holding parts are different, Depending on the coil end length of the workpiece, the lifter body is rotated to bring the plurality of first base holding parts or the plurality of second base holding parts into contact with the plurality of extension pieces. Stator manufacturing equipment.

2. The lifter further comprises a plurality of third base holding portions extending radially from the outer circumferential surface of the lifter body, Each third base holding portion is positioned on the outer circumferential surface of the lifter body at a predetermined distance from each first base holding portion and each second base holding portion. The heights of the plurality of third base holding parts differ from the heights of the plurality of first base holding parts and the heights of the plurality of second base holding parts. Depending on the coil end length of the workpiece, the lifter body is rotated to bring the plurality of first base holding parts, the plurality of second base holding parts, or the plurality of third base holding parts into contact with the plurality of extension pieces. The stator manufacturing apparatus according to claim 1.

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