JP2021141765A - Rotor cutting method for motor and machine thereof - Google Patents

Abstract

To cut the outer peripheral surface of a rotor having high degree of concentricity between the outer peripheral surface of the rotor of a motor and the outer peripheral surface of a shaft, and cut the outer peripheral surface of the rotor having good roundness and surface roughness to machine the outer peripheral surface of the rotor with high accuracy.SOLUTION: A rotor cutting machine for a motor includes a rotor support mechanism unit A provided with a pair of opposed V-shaped shaft receiving units A1 that can rotatably support both ends of a shaft S of a rotor R of a motor, a rotary drive mechanism unit B provided with an endless drive belt B1 that elastically contacts the outer peripheral surface G of the rotor to rotate the rotor, a retracting mechanism unit C that retracts the rotary drive mechanism unit from a drive position K in which a drive belt contacts the rotor to a retracted position in which the drive belt separates from the rotor, and a cutting mechanism D provided with a cutting tool T that cuts the outer peripheral surface of the rotor.SELECTED DRAWING: Figure 1

Description

The present invention relates to, for example, a rotor cutting method for electric motors and a machine thereof for cutting the outer peripheral surface of a rotor (also referred to as a "rotor") of various electric motors such as a DC motor, an AC motor, and the like with a cutting tool. ..

Conventionally, a machine having a structure using a cutting tool as a machine for cutting the surface of the commutator portion and the outer peripheral surface of the shaft portion of this type of rotor for electric motors is known.

Japanese Unexamined Patent Publication No. 2-250707 Japanese Unexamined Patent Publication No. 53-68803 Jikken Sho 60-3665

However, in the case of the above-mentioned conventional structure, the structure is such that the surface of the rotor portion of the rotor for the motor and the outer peripheral surface of the shaft portion are cut, not the structure for cutting the outer peripheral surface of the rotor for the motor, for example. The rotor has a structure in which a laminate of multiple thin plates or silicon steel plates is externally fitted to the shaft and integrally formed by aluminum die casting, and the rotors are concentrically formed with a predetermined clearance in the stator. It is internally fitted, and the roundness and concentricity of the outer peripheral surface of the rotor with respect to the rotation axis of the shaft are strictly required, which also affects the rotation efficiency of the motor. Machining accuracy of the outer peripheral surface of the rotor of an electric motor for automobiles (EV vehicles) is strongly required.

The present invention aims to solve such inconveniences, and the invention of the method according to claim 1 of the present invention is a rotation drive mechanism when cutting the outer peripheral surface of the rotor of a motor with a cutting tool. The retracting mechanism unit retracts the unit to a retracting position where the drive belt separates from the rotor, and both ends of the rotor shaft are rotatable by the pair of V-shaped shaft receiving portions facing the rotor support mechanism. The rotary drive mechanism unit is operated to face the drive position where the drive belt comes into contact with the rotor from the retracted position where the drive belt separates from the rotor, and the endless drive belt of the rotary drive mechanism unit is operated. To rotate the rotor by elastically contacting the outer peripheral surface of the rotor, rotate the rotor by the drive belt of the rotation drive mechanism portion, and cut the outer peripheral surface of the rotor by the cutting tool of the cutting mechanism portion. This is a rotor cutting method for electric motors.

The invention of the machine according to claim 2 is a rotor cutting machine that cuts the outer peripheral surface of the rotor of an electric motor with a cutting tool, and a pair of facing surfaces capable of rotatably supporting both ends of the shaft of the rotor. A rotor support mechanism unit having a V-shaped shaft receiving portion, a rotation drive mechanism unit having an endless drive belt that makes elastic contact with the outer peripheral surface of the rotor to rotate the rotor, and the rotation. It is provided with a retracting mechanism for retracting the drive mechanism from a drive position where the drive belt comes into contact with the rotor to a retracted position where the drive belt separates from the rotor, and a cutting tool for cutting the outer peripheral surface of the rotor. It is a rotor cutting machine for an electric motor, which is characterized by being provided with a cutting mechanism portion.

Further, the invention of the machine according to claim 3 is an inclination angle in which the angle formed by the traveling direction of the drive belt of the rotation drive mechanism unit and the orthogonal direction orthogonal to the rotation axis of the rotor can be adjusted to a predetermined inclination angle. The machine is characterized in that it includes an adjusting mechanism and a positioning portion that abuts on one end of the shaft of the rotor, and the invention of the machine according to claim 4 is described in the cutting mechanism portion. The present invention is characterized by comprising a cutting mechanism for cutting the cutting tool in the radial direction of the rotor and a feeding mechanism for feeding the cutting tool in the direction of the rotation axis of the rotor. In the invention of the machine according to 5, the drive belt is arranged at the drive position where the upper outer peripheral surface of the rotor can be elastically contacted, and the cutting tool is arranged at the cutting position where the lower outer peripheral surface of the rotor is cut and cut. It is characterized by being made.

Further, in the invention of the machine according to claim 6, the rotary drive mechanism unit has a pair of elastic contact rolls and a retracted position in which the drive belt is compressed and wound on the outer peripheral surface of the rotor at the drive position. It is characterized in that it is provided with a slack absorption mechanism having an absorption roll that absorbs the slack of the drive belt generated between a pair of elastic contact rolls due to the separation of the rotor from the outer peripheral surface and stretches the drive belt. In the invention of the machine according to claim 7, the rotary drive mechanism unit includes a drive motor for driving the drive belt and a drive roll rotated by the drive motor, and the drive roll is provided. The drive belt is wound around the pair of elastic contact rolls, and the retracting mechanism unit retracts from the drive position to the retracted position by a vertical swing cylinder centered on the rotation axis of the drive roll. In the invention of the machine according to claim 8, the tilt angle adjusting mechanism is centered on a swivel axis having a swivel axis orthogonal to the rotation axis of the drive roll. It is characterized by comprising a swivel adjustment mechanism capable of swivel adjustment.

As described above, in the inventions according to the first and second aspects of the present invention, the rotation drive mechanism unit is retracted to a retracted position where the drive belt separates from the rotor by the retracting mechanism unit, and is artificially or automatically. Both ends of the rotor shaft of the electric motor are rotatably supported by a pair of V-shaped shaft receiving portions facing each other of the rotor support mechanism portion, and the rotation drive mechanism portion is retracted so that the drive belt separates from the rotor. The rotary drive mechanism unit is operated to face the drive position where the drive belt contacts the rotor from the position, and the endless drive belt of the rotary drive mechanism unit is elastically contacted with the outer peripheral surface of the rotor to rotate the rotor. The rotor is rotated by the drive belt of the rotor, and the outer peripheral surface of the rotor is cut by the bite of the cutting mechanism. Since both ends of the shaft are rotatably supported and the outer peripheral surface of the rotor is cut, the outer peripheral surface of the rotor having a high degree of concentricity between the outer peripheral surface of the rotor and the outer peripheral surface of the shaft is cut. This can be done by rotatably supporting both ends of the rotor shaft on a pair of V-shaped shaft receivers facing each other of the rotor support mechanism, and supporting the endless drive belt of the rotor drive mechanism of the rotor. Since the rotor is rotated by elastic contact with the outer peripheral surface and the outer peripheral surface of the rotor is cut by the cutting tool of the cutting mechanism, vibration of the rotor due to rotation can be suppressed, and the roundness and roundness and The outer peripheral surface of the rotor with good surface roughness can be cut, the outer peripheral surface of the rotor can be cut with high accuracy, and the rotor is placed on the stator of the electric motor with a predetermined clearance. It is possible to prevent the rotor from being damaged due to gripping without gripping the outer peripheral surface of the rotor or the shaft, and the rotor can be easily supplied and removed, and the rotor can be rotated. The efficiency of cutting of the child can be further improved.

Further, in the invention according to claim 3, the inclination formed by the traveling direction of the drive belt of the rotation drive mechanism unit and the orthogonal direction orthogonal to the rotation axis of the rotor can be adjusted to a predetermined inclination angle. Since it is configured to include an angle adjusting mechanism and a positioning portion that abuts on one end of the rotor shaft, it depends on the angle formed by the traveling direction of the drive belt and the orthogonal direction orthogonal to the rotation axis of the rotor. Due to the generated thrust force, one end of the rotor shaft abuts on the positioning portion and the rotor can be positioned by the shaft receiving portion, the positioning structure of the rotor can be simplified, and the rotation with respect to the shaft receiving portion can be simplified. The child can be easily supplied and taken out, and in the invention according to claim 4, a cutting mechanism and a cutting tool for cutting the cutting tool in the radial direction of the rotor are provided in the cutting mechanism portion. Since it is equipped with a feed mechanism that feeds the rotor in the direction of the rotation axis, the outer peripheral surface of the rotor can be accurately adjusted by cutting the bite in the radial direction of the rotor and feeding it in the direction of the rotation axis of the rotor. In the invention according to claim 5, the drive belt is arranged at the drive position where the upper outer peripheral surface of the rotor can be elastically contacted, and the bite is the rotor. Since it is located at the cutting position where the lower outer peripheral surface of the rotor is cut and cut, mutual interference between the elastic contact operation of the drive belt of the rotary drive mechanism that rotates the rotor and the cutting operation and feed operation of the cutting tool is avoided. It is possible to increase the winding angle of the drive belt with respect to the outer peripheral surface of the rotor, the rotary drive can be reliably performed by the drive belt, and the outer peripheral surface of the rotor is satisfactorily machined. It can be performed.

Further, in the invention according to claim 6, the rotary drive mechanism unit has a pair of elastic contact rolls for compressing and winding contact the drive belt on the outer peripheral surface of the rotor at the drive position, and the retracting. This is because it is provided with a slack absorbing mechanism having an absorbing roll that absorbs the slack of the drive belt generated between the pair of elastic contact rolls due to the separation of the rotor from the outer peripheral surface at the position and stretches the drive belt. , The drive rotation of the rotor by the drive belt and the running of the drive belt can be smoothly performed, the rotor can be cut satisfactorily, and in the invention according to claim 7, the above-mentioned rotary drive can be performed. The mechanism unit includes a drive motor that drives the drive belt and a drive roll that is rotated by the drive motor. The drive belt is wound and arranged between the drive roll and the pair of pressure contact rolls, and the drive belt is retracted. Since the mechanism unit is configured to retract from the drive position to the retracted position by a vertical swing cylinder centered on the rotation axis of the drive roll, the structure of the retracted mechanism unit can be simplified and driven. The retracting operation from the position to the retracted position can be smoothly performed, and in the invention according to claim 8, the tilt angle adjusting mechanism makes the rotary drive mechanism unit orthogonal to the rotation axis of the drive roll. Since it is configured to have a swivel adjustment mechanism that can swivel around a swivel axis having a swivel axis, the structure of the tilt angle adjustment mechanism can be simplified, and the traveling direction of the drive belt and the rotation of the rotor The angle formed by the orthogonal direction orthogonal to the axis can be adjusted to a predetermined inclination angle, the rotor can be smoothly rotated by adjusting the thrust force, and one end of the rotor shaft can be used as a positioning portion. The contact can be surely made, and the outer peripheral surface of the rotor can be satisfactorily cut.

It is an overall front sectional view of the Example of Embodiment of this invention. It is an overall plan view of the Example of Embodiment of this invention. It is a partial side sectional view of the Example of Embodiment of this invention. It is a partially enlarged front view of the embodiment of the present invention. It is a partially enlarged side sectional view of the Example of Embodiment of this invention. It is a partially enlarged front sectional view of the Example of Embodiment of this invention. It is a partial plan view of the embodiment of the present invention. It is a partially enlarged side sectional view of the Example of Embodiment of this invention. It is a partially enlarged plan view of the Example of Embodiment of this invention. It is a partial right sectional view of the Example of Embodiment of this invention. It is a partial right sectional view of the Example of Embodiment of this invention. It is explanatory perspective view of the Example of Embodiment of this invention.

1 to 12 show an example of an embodiment of the present invention, and as shown in FIGS. 1, 2, 6, 10, and 11, roughly, both ends of the shaft S of the rotor R of the motor are rotated. a rotor supporting mechanism a having a shaft receiving portion a ₁ · a ₁ of freely supportable opposed pair of V-shaped, endless rotating the rotor R and repression contact with the outer peripheral surface G of the rotor R of a rotary drive mechanism B having a driving belt B _1, save that the drive belt B ₁ from the drive position K in which the driving belt B ₁ is in contact with rotating drive mechanism B in the rotor R is away from the rotor R It is configured to include a retracting mechanism portion C for retracting to the position L and a cutting mechanism portion D provided with a bite T for cutting the outer peripheral surface G of the rotor R.

In this case, 1, 2, as shown in FIG. 9, the angle between the direction perpendicular Nd perpendicular to the rotation axis R ₀ in the running direction Bd and the rotor R of the drive belt B ₁ of the rotation drive mechanism B It is configured to include an inclination angle adjusting mechanism E that can be adjusted to a predetermined inclination angle θ, and a positioning portion F that abuts on one end of the shaft S of the rotor R.

Further, in this case, as shown in FIGS. 2 and 3, the cutting mechanism D1 for cutting the cutting mechanism D into the cutting mechanism D in the radial direction of the rotor R and the cutting mechanism D _{1 for} cutting the cutting mechanism D into the rotation axis R of the rotor R. It is provided with a feed mechanism D _{2 that feeds in the 0 direction.}

Further, in this case, as shown in FIG. 6, the drive belt B ₁ represents disposed over the outer peripheral surface G _U repression can contact a said drive position K of the rotor R, the byte T is lower periphery of the rotor R It is arranged at the cutting position Q where the surface G _{D is cut and cut.}

Further, in this case, as shown in FIGS. 1, 4, 5, and 12, the rotation drive mechanism unit B _{represses the drive belt B 1} on the outer peripheral surface G of the rotor R at the drive position K and winds it. roll pair of repression contact for hanging contact B ₂ · B ₂ and the by separating from the outer peripheral surface G of the rotor R in the retracted position L occurs between the rolls for the pair of elastic pressure contact B ₂ · B ₂ drive belt B ₁ to absorb the slack is stretched a driving belt B _1, in this case, the slack absorbing mechanism B ₃ having an absorption roll B ₆ capable repression drive belt B ₁ always between the pair of tension rolls B ₄ · B ₄ It is configured with.

Further, in this case, 10, 11, as shown in FIG. 12, the drive roll B _R the rotation driving mechanism part B is rotated by the drive motor B _M and the drive motor B _M for driving the drive belt B ₁ with it, the drive roll B _R and the drive belt B ₁ between the pair of elastic pressure contact roll B ₂ · B ₂ is disposed wrapping, the retracting mechanism C is driven roll B _R rotational axis B _R0 of It is configured to retract operation to the retracted position L from the driving position K by the vertical swing cylinder C ₁ around the.

Further, in this case, FIG. 1, as shown in FIG. 2, the pivot shaft E ₁ the inclination angle adjusting mechanism E is with pivot axis E ₁₀ orthogonal to the rotation driving mechanism part B to the rotational axis B _R0 of the drive roll B _R It is configured to be provided with a swivel adjustment mechanism E _{2 that can be swivel-adjustable as a center.}

In this case, in the rotor support mechanism portion A, as shown in FIGS. 1, 2, 6, 7, 8, and 9, a pair of bearings 2.2 are arranged to face each other on the machine body 1, and the bearings 2.2 are arranged. Two guide shafts 3 and 3 are erected between them, and two slides 4 and 4 are slidably provided between the guide shafts 3 and 3, and between each slide 4 and 4 and each bearing 2 and 2. Screw shafts 5 and 5 are erected, respectively, and slides 4 and 4 are provided so as to be able to move forward and backward by rotating the screw shafts 5 and 5 in the forward and reverse directions. ₁・ A ₁ is attached, and both ends of the shaft S of the rotor R of the motor are rotatably supported by the V-shaped bearing surfaces 6 and 6 of _{the shaft receiving parts A 1} and A _{1. In this case, the shaft} receiving a _1-a, respectively V-shaped receiving surface 6, 6 of ₁ industrial diamond material or other hard material of the hard material 6a-6a disposed, the electric motor by the normal and reverse rotation of the screw shaft 5, 5 It is configured to be compatible with the length and size of the shaft S of the rotor R.

Further, in this case, as shown in FIGS. 1 and 3, the rotation drive mechanism unit B is attached to the rocking machine 7 by a pair of tension _{contact rolls B 2} and B ₂ and a slack absorption mechanism B _3. roll _B 4 · _{B 4,} the guide roll _{B 5} and the driving roll _{B R} are arranged, these repression contact roll _B 2 · _{B 2,} a pair of tension rolls _B 4 · _{B 4} of the slack absorbing mechanism _{B 3,} guide roll B ₅ to the endless and driven roll B _R drive belt B ₁ is being constructed by winding disposed.

Further, in this case, as shown in FIGS. 1 and 2, in the retracting mechanism portion C, the tilt angle adjusting mechanism E, and the turning adjusting mechanism E ₂ , the swivel base 8 is mounted on the horizontal plane portion 1a of the machine body 1 and the swivel shaft E _{1 is used.} The swivel axis E ₁₀ is provided so that the swivel axis 8 can be swiveled around the center of the swivel axis E10. the swing cylinder C ₁ vertical swing cylinder C ₁ and disposed in the groove portion 8a · 1b escape the pivotally mounted by pivot 10, and pivotally by a connecting pin 11 to the vertical swing cylinder C ₁ of the rod to the rocker body 7 Further, in the positioning portion F, a stop pin 12 is provided on one of the pair of bearings 2 and 2 so as to be adjustable in advance and retreat, and a bolt 13 for fixing the stop pin 12 to the bearing 2 is provided. as shown in FIG. 9, by the thrust force P of the inclination angle θ by arising shown formed between a direction perpendicular Nd perpendicular to the rotation axis R ₀ in the running direction Bd and the rotor R of the drive belt B ₁ of the rotation drive mechanism B the rotor R is moved into contact with the positioning portion F on one end of the shaft S of the rotor R on the shaft receiving portion a ₁ · a _1, positioning the rotor R with the shaft receiving portion a ₁ · a ₁ It is freely configured.

Further, in this case, as shown in FIGS. 1, 2, and 3, in the cutting mechanism D ₁ and the feeding mechanism D ₂ of the cutting mechanism D, the fixing base 14 is mounted on the slope 1c of the machine 1. The moving table 15 is provided on the fixed table 14 by a sliding mechanism 16 including a sliding portion 16a and a guide portion 16b so as to be _{movable in the direction of the rotation axis R0} of the rotor R, and the feeding motor 17 is provided on the fixed base 14. At the same time, the screw shaft 17a is erected on the fixing base 14 by the bearing plates 14a and 14a, the nut body 15a screwed to the screw shaft 17a is attached to the moving base 15, and the main shaft of the feed motor 17 and the screw shaft 17a are joined to the joint 17b. The cutting table 18 is connected to the moving table 15 by a sliding mechanism 19 including a sliding portion 19a and a guide portion 19b so that the cutting table 18 can be cut and moved in the radial direction orthogonal to _{the rotation axis R0 of the rotor R.} The cutting motor 20 is attached to the moving table 15, the screw shaft 20a is erected on the moving table 15 by the bearing plates 15b and 15b, and the nut body 20b screwed to the screw shaft 20a is attached to the cutting table 18 for cutting. a main shaft and the screw shaft 20a of the write motor 20 connected by joints 20c, mount the tool mount 21 to cut base 18, to cut cutting the lower outer peripheral surface G _D of the rotor R on the tool mount 21 A bite T is attached, for example, a bite T for shaving cutting used for precision cutting and finish cutting, and a bite T of various other shapes and materials are used, and a rotor is used by the bite T arranged at the cutting position Q. the lower outer peripheral surface G _D of R are configured to cut the cutting. As the arrangement angle α of the slope portion 1c with respect to the horizontal plane portion 1a in FIG. 1, for example, about 20 degrees to 45 degrees is adopted, and the larger the arrangement angle α is, the more the cutting mechanism portion D is driven with respect to the arrangement structure of the bite T. it is possible to increase the flexibility of Cyclic arrangement of belt B _1, it just makes it possible to increase the γ wrap angle of the drive belt B ₁ with respect to the outer peripheral surface of the rotor R, the rotor by the driving belt B ₁ The rotary drive of R can be reliably performed.

Since the example of this embodiment has the above configuration, as shown in FIG. 11, the rotation drive mechanism unit B is moved to the retracted position L where the _{drive belt B 1 is separated from the rotor R by the retracting mechanism portion C, and artificially or} automatically both ends of the shaft S of the rotor R of the electric motor is rotatably supported respectively on the rotor supporting mechanism unit opposed pair of V-shaped shaft receiving portion a ₁ · a ₁ of a, as shown in FIG. 10, The rotary drive mechanism B is operated so as _{to face the drive position K in which the drive belt B 1} contacts the rotor R from the retracted position L where the _{drive belt B 1} separates from the rotor R, and the rotary drive mechanism B is endless. driving the belt B ₁ in repression contact with the outer peripheral surface G of the rotor R to rotate the rotor R, byte T of the cutting mechanism D to rotate the rotor R by a drive belt B ₁ of the rotation drive mechanism B the results in cutting the outer peripheral surface G of the rotor R, Therefore, both end portions of the shaft S of the rotor R to the rotor supporting mechanism shaft receiving a ₁ · a ₁ opposed pair of V-shaped of a Since the outer peripheral surface G of the rotor R is cut by rotatably supporting each of them, the outer peripheral surface G of the rotor R having a high degree of concentricity between the outer peripheral surface G of the rotor R and the outer peripheral surface of the shaft S cutting can be performed, both ends of the shaft S of the rotor R is rotatably supported respectively on the rotor supporting mechanism shaft receiving a ₁ · a ₁ opposed pair of V-shaped of a, the rotary drive mechanism The endless drive belt B ₁ of B is elastically contacted with the outer peripheral surface G of the rotor R to rotate the rotor R, and the outer peripheral surface G of the rotor R is cut by the bite T of the cutting mechanism portion D. Therefore, the vibration of the rotor R due to rotation can be suppressed, the outer peripheral surface G of the rotor R having good roundness and surface roughness can be cut, and the outer peripheral surface G of the rotor R can be cut. It is possible to perform cutting with high accuracy, and the rotor R can be accurately arranged with a predetermined clearance on the stator of the electric motor. Damage to the rotor R can be prevented, the supply and removal of the rotor R can be easily performed, and the efficiency of the cutting process of the rotor R can be further improved.

In this case, 1, 2, as shown in FIG. 9, the angle between the direction perpendicular Nd perpendicular to the rotation axis R ₀ in the running direction Bd and the rotor R of the drive belt B ₁ of the rotation drive mechanism B an inclination angle adjusting mechanism E can be adjusted to a predetermined inclination angle theta, because they constitute and a positioning portion F which abuts the one end portion of the shaft S of the rotor R, the traveling direction Bd of the drive belt B ₁ And the thrust force P generated by the inclination angle θ formed by the orthogonal direction Nd orthogonal to the rotation axis R ₀ of the rotor R, one end of the shaft S of the rotor R abuts on the positioning portion F to cause the rotor R to come into contact with the positioning portion F. can be positioned in the shaft receiving portion a ₁ · a _1, a positioning structure of a rotor R can be simplified, easily performed that the supply and removal of the rotor R with respect to the shaft receiving portions a ₁ · a ₁ In this case, as shown in FIGS. 1, 2, and 3, the cutting mechanism D ₁ and the cutting tool T that cut the cutting mechanism D into the cutting mechanism D in the radial direction of the rotor R are rotated. Since the feed mechanism D ₂ for feeding the child R in the rotation axis R ₀ direction is provided, the bite T is cut in the radial direction of the rotor R and fed in _{the rotation axis R 0 direction of the rotor R.} the outer peripheral surface G of the rotor R can be accurately machined by, also in this case, as shown in FIG. 6, the drive belt B ₁ represents possible repression contact with the upper outer peripheral surface G _U of the rotor R Since the bite T is arranged at the drive position K and the bite T is _{arranged at the cutting position Q for cutting and cutting the lower outer peripheral surface G D} of the rotor R, the drive of the rotation drive mechanism unit B for rotating the rotor R is performed. Mutual interference between the elastic contact operation of the belt B ₁ and the cutting operation and the feed operation of the bite T can be avoided, and the winding angle γ _{of the drive belt B 1 with respect to the outer peripheral surface G of the rotor R can be increased.} This makes it possible _{to reliably rotate the rotor R by the drive belt B 1} , and to satisfactorily cut the outer peripheral surface G of the rotor R.

Further, in this case, as shown in FIGS. 6, 10 and 11, the rotary drive mechanism B presses the drive belt B ₁ against the outer peripheral surface G of the rotor R at the drive position K to bring it into contact with the outer peripheral surface G. the slack in the drive belt B ₁ occurring between the rolls for the pair of elastic pressure contact B ₂ · B ₂ by separating from the outer peripheral surface G of the rotor R of the pair of elastic pressure contact roll B ₂ · B ₂ and the retreat position L since absorption to constitute comprise the slack absorbing mechanism B ₃ having an absorption roll B ₆ to tension the drive belt B _1, the travel of the driving rotation and drive belt B ₁ of the rotor R by the drive belt B ₁ smoothly can be performed, the cutting of the rotor R can be satisfactorily performed, also in this case, 10, as shown in FIG. 11, the rotation driving mechanism part B for driving for driving the driving belt B ₁ It becomes a driving roll B _R which is rotated by the motor B _M and the drive motor B _M, the drive belt B ₁ is meshed disposed between the drive roll B _R and the pair of elastic pressure contact roll B ₂ · B ₂ It is, because the retracting mechanism C is constructed so as to retracting operation to the retracted position L from the driving position K by the vertical swing cylinder C ₁ around the rotation axis B _R0 of the drive roll B _R, the retraction The structure of the mechanism unit C can be simplified, the retracting operation from the drive position K to the retracted position L can be smoothly performed, and in this case, as shown in FIGS. 1, 2, and 9, the above tilt angle adjusting mechanism E is provided with the above-mentioned rotational drive mechanism revolving adjustable pivot adjustment mechanism E ₂ about a pivot axis E ₁ having a pivot axis E ₁₀ orthogonal to B to the axis of rotation B _R0 of the drive roll B _R because they constitute, it is possible to simplify the structure of the tilt angle adjusting mechanism E, an angle between a direction perpendicular Nd perpendicular to the rotation axis R ₀ in the running direction Bd and the rotor R of the drive belt B ₁ It can be adjusted to a predetermined inclination angle θ, the rotor R can be smoothly rotated by adjusting the thrust force P, and one end of the shaft S of the rotor R is surely brought into contact with the positioning portion F. This makes it possible to satisfactorily cut the outer peripheral surface G of the rotor R.

The present invention is not limited to the embodiment of the above embodiment, the rotor R, the shaft S, the structure of the byte T, the rotor support mechanism A, the shaft receiving portion A ₁ · A _1, the rotation drive mechanism B , the drive belt _{B 1,} repression contact roll _B 2 · _{B 2,} the slack absorbing mechanism _{B 3,} absorbing roller _{B 6,} the driving motor _{B M,} drive roll _{B R,} the traveling direction Bd, the rotation axis _{B R0,} retracting mechanism C, Cylinder for vertical swing C ₁ , Cutting mechanism D, Cutting mechanism D ₁ , Feed mechanism D ₂ , Tilt angle adjustment mechanism E, Swivel shaft E ₁ , Swivel adjustment mechanism E ₂ , Swivel axis E ₁₀ , Positioning unit F The structure and inclination angle θ of are appropriately changed and designed.

As mentioned above, the intended purpose can be sufficiently achieved.

R Rotor S Shaft T-bite A Rotor support mechanism A ₁ Shaft receiving part B Rotation drive mechanism B ₁ Drive belt B ₂ Repulsion contact roll B ₃ Loose absorption mechanism B ₆ Absorption roll _BM Drive motor _BR drive Roll Bd Traveling direction _BR0 Rotating axis C Retracting mechanism C ₁ Vertical swing cylinder D Cutting mechanism D ₁ Cutting mechanism D ₂ Feeding mechanism E Tilt angle adjustment mechanism E ₁ Swing axis E ₂ Swing adjustment mechanism E ₁₀ Swing axis F Positioning part G outer peripheral surface G _U upper outer peripheral surface G _D lower outer peripheral surface K drive position L retract position R ₀ rotation axis Nd orthogonal direction Q cutting position θ tilt angle

The present invention relates to, for example, a rotor cutting method for electric motors and a machine thereof for cutting the outer peripheral surface of a rotor (also referred to as a "rotor") of various electric motors such as a DC motor, an AC motor, and the like with a cutting tool. ..

Conventionally, a machine having a structure using a cutting tool as a machine for cutting the surface of the commutator portion and the outer peripheral surface of the shaft portion of this type of rotor for electric motors is known.

Japanese Unexamined Patent Publication No. 2-250707 Japanese Unexamined Patent Publication No. 53-68803 Jikken Sho 60-3665

However, in the case of the above-mentioned conventional structure, the structure is such that the surface of the rotor portion of the rotor for the motor and the outer peripheral surface of the shaft portion are cut, not the structure for cutting the outer peripheral surface of the rotor for the motor, for example. The rotor has a structure in which a laminate of multiple thin plates or silicon steel plates is externally fitted to the shaft and integrally formed by aluminum die casting, and the rotors are concentrically formed with a predetermined clearance in the stator. It is internally fitted, and the roundness and concentricity of the outer peripheral surface of the rotor with respect to the rotation axis of the shaft are strictly required, which also affects the rotation efficiency of the motor. Machining accuracy of the outer peripheral surface of the rotor of an electric motor for automobiles (EV vehicles) is strongly required.

The present invention aims to solve such inconveniences, and the invention of the method according to claim 1 of the present invention is a rotation drive mechanism when cutting the outer peripheral surface of the rotor of a motor with a cutting tool. The retracting mechanism unit retracts the unit to a retracting position where the drive belt separates from the rotor, and both ends of the rotor shaft are rotatable by the pair of V-shaped shaft receiving portions facing the rotor support mechanism. The rotary drive mechanism unit is operated to face the drive position where the drive belt comes into contact with the rotor from the retracted position where the drive belt separates from the rotor, and the endless drive belt of the rotary drive mechanism unit is operated. To rotate the rotor by elastically contacting the outer peripheral surface of the rotor, rotate the rotor by the drive belt of the rotation drive mechanism portion, and cut the outer peripheral surface of the rotor by the cutting tool of the cutting mechanism portion. This is a rotor cutting method for electric motors.

The invention of the machine according to claim 2 is a rotor cutting machine that cuts the outer peripheral surface of the rotor of an electric motor with a cutting tool, and a pair of facing surfaces capable of rotatably supporting both ends of the shaft of the rotor. A rotor support mechanism unit having a V-shaped shaft receiving portion, a rotation drive mechanism unit having an endless drive belt that makes elastic contact with the outer peripheral surface of the rotor to rotate the rotor, and the rotation. It is provided with a retracting mechanism for retracting the drive mechanism from a drive position where the drive belt comes into contact with the rotor to a retracted position where the drive belt separates from the rotor, and a cutting tool for cutting the outer peripheral surface of the rotor. It is a rotor cutting machine for an electric motor, which is characterized by being provided with a cutting mechanism portion.

Further, the invention of the machine according to claim 3 is an inclination angle in which the angle formed by the traveling direction of the drive belt of the rotation drive mechanism unit and the orthogonal direction orthogonal to the rotation axis of the rotor can be adjusted to a predetermined inclination angle. The machine is characterized in that it includes an adjusting mechanism and a positioning portion that abuts on one end of the shaft of the rotor, and the invention of the machine according to claim 4 is described in the cutting mechanism portion. The present invention is characterized by comprising a cutting mechanism for cutting the cutting tool in the radial direction of the rotor and a feeding mechanism for feeding the cutting tool in the direction of the rotation axis of the rotor. In the invention of the machine according to 5, the drive belt is arranged at the drive position where the upper outer peripheral surface of the rotor can be elastically contacted, and the cutting tool is arranged at the cutting position where the lower outer peripheral surface of the rotor is cut and cut. It is characterized by being made.

Further, in the invention of the machine according to claim 6, the rotary drive mechanism unit has a pair of elastic contact rolls for compressing and winding contact the drive belt on the outer peripheral surface of the rotor at the drive position, and the retracted position. It is characterized in that it is provided with a slack absorption mechanism having an absorption roll that absorbs the slack of the drive belt generated between a pair of elastic contact rolls due to the separation of the rotor from the outer peripheral surface and stretches the drive belt. In the invention of the machine according to claim 7, the rotary drive mechanism unit includes a drive motor for driving the drive belt and a drive roll rotated by the drive motor, and the drive roll is provided. The drive belt is wound and arranged between the pair of rolls for elastic contact, and the retracting mechanism unit moves the rotation drive mechanism unit from the drive position by a vertical swing cylinder about the rotation axis of the drive roll. The machine is characterized in that it retracts to the retracted position, and in the invention of the machine according to claim 8, the tilt angle adjusting mechanism causes the rotary drive mechanism unit to rotate on a swivel axis orthogonal to the rotary axis of the drive roll. It is characterized by comprising a swivel adjustment mechanism capable of swivel adjustment around a swivel shaft having a.

As described above, in the inventions according to the first and second aspects of the present invention, the rotation drive mechanism unit is retracted to a retracted position where the drive belt separates from the rotor by the retracting mechanism unit, and is artificially or automatically. Both ends of the rotor shaft of the electric motor are rotatably supported by a pair of V-shaped shaft receiving portions facing each other of the rotor support mechanism portion, and the rotation drive mechanism portion is retracted so that the drive belt separates from the rotor. The rotary drive mechanism unit is operated to face the drive position where the drive belt contacts the rotor from the position, and the endless drive belt of the rotary drive mechanism unit is elastically contacted with the outer peripheral surface of the rotor to rotate the rotor. The rotor is rotated by the drive belt of the rotor, and the outer peripheral surface of the rotor is cut by the bite of the cutting mechanism. Since both ends of the shaft are rotatably supported and the outer peripheral surface of the rotor is cut, the outer peripheral surface of the rotor having a high degree of concentricity between the outer peripheral surface of the rotor and the outer peripheral surface of the shaft is cut. This can be done by rotatably supporting both ends of the rotor shaft on a pair of V-shaped shaft receivers facing each other of the rotor support mechanism, and supporting the endless drive belt of the rotor drive mechanism of the rotor. Since the rotor is rotated by elastic contact with the outer peripheral surface and the outer peripheral surface of the rotor is cut by the cutting tool of the cutting mechanism, vibration of the rotor due to rotation can be suppressed, and the roundness and roundness and The outer peripheral surface of the rotor with good surface roughness can be cut, the outer peripheral surface of the rotor can be cut with high accuracy, and the rotor is placed on the stator of the electric motor with a predetermined clearance. It is possible to prevent the rotor from being damaged due to gripping without gripping the outer peripheral surface of the rotor or the shaft, and the rotor can be easily supplied and removed, and the rotor can be rotated. The efficiency of cutting of the child can be further improved.

Further, in the invention according to claim 3, the inclination formed by the traveling direction of the drive belt of the rotation drive mechanism unit and the orthogonal direction orthogonal to the rotation axis of the rotor can be adjusted to a predetermined inclination angle. Since it is configured to include an angle adjusting mechanism and a positioning portion that abuts on one end of the rotor shaft, it depends on the angle formed by the traveling direction of the drive belt and the orthogonal direction orthogonal to the rotation axis of the rotor. Due to the generated thrust force, one end of the rotor shaft abuts on the positioning portion and the rotor can be positioned by the shaft receiving portion, the positioning structure of the rotor can be simplified, and the rotation with respect to the shaft receiving portion can be simplified. The child can be easily supplied and taken out, and in the invention according to claim 4, a cutting mechanism and a cutting tool for cutting the cutting tool in the radial direction of the rotor are provided in the cutting mechanism portion. Since it is equipped with a feed mechanism that feeds the rotor in the direction of the rotation axis, the outer peripheral surface of the rotor can be accurately adjusted by cutting the bite in the radial direction of the rotor and feeding it in the direction of the rotation axis of the rotor. In the invention according to claim 5, the drive belt is arranged at the drive position where the upper outer peripheral surface of the rotor can be elastically contacted, and the bite is the rotor. Since it is located at the cutting position where the lower outer peripheral surface of the rotor is cut and cut, mutual interference between the elastic contact operation of the drive belt of the rotary drive mechanism that rotates the rotor and the cutting operation and feed operation of the cutting tool is avoided. It is possible to increase the winding angle of the drive belt with respect to the outer peripheral surface of the rotor, the rotary drive can be reliably performed by the drive belt, and the outer peripheral surface of the rotor is satisfactorily machined. It can be performed.

Further, in the invention according to claim 6, the rotary drive mechanism unit has a pair of elastic contact rolls for compressing and winding contact the drive belt on the outer peripheral surface of the rotor at the drive position, and the retracting. This is because it is provided with a slack absorbing mechanism having an absorbing roll that absorbs the slack of the drive belt generated between the pair of elastic contact rolls due to the separation of the rotor from the outer peripheral surface at the position and stretches the drive belt. , The drive rotation of the rotor by the drive belt and the running of the drive belt can be smoothly performed, the rotor can be cut satisfactorily, and in the invention according to claim 7, the above-mentioned rotary drive can be performed. The mechanism unit includes a drive motor that drives the drive belt and a drive roll that is rotated by the drive motor. The drive belt is wound and arranged between the drive roll and the pair of pressure contact rolls, and the drive belt is retracted. Since the mechanism unit is configured to retract the rotary drive mechanism unit from the drive position to the retracted position by a vertical swing cylinder centered on the rotation axis of the drive roll, the structure of the retracted mechanism unit is simplified. Therefore, the retracting operation from the drive position to the retracted position can be smoothly performed, and in the invention according to claim 8, the tilt angle adjusting mechanism drives the rotary drive mechanism portion of the drive roll. Since it is equipped with a swivel adjustment mechanism that can adjust swivel around a swivel axis that has a swivel axis perpendicular to the rotation axis, the structure of the tilt angle adjustment mechanism can be simplified, and the traveling direction of the drive belt The angle formed by the orthogonal direction orthogonal to the rotation axis of the rotor can be adjusted to a predetermined inclination angle, and the rotor can be smoothly rotated by adjusting the thrust force, and one end of the rotor shaft can be adjusted. The portion can be reliably brought into contact with the positioning portion, and the outer peripheral surface of the rotor can be satisfactorily cut.

It is an overall front sectional view of the Example of Embodiment of this invention. It is an overall plan view of the Example of Embodiment of this invention. It is a partial side sectional view of the Example of Embodiment of this invention. It is a partially enlarged front view of the embodiment of the present invention. It is a partially enlarged side sectional view of the Example of Embodiment of this invention. It is a partially enlarged front sectional view of the Example of Embodiment of this invention. It is a partial plan view of the embodiment of the present invention. It is a partially enlarged side sectional view of the Example of Embodiment of this invention. It is a partially enlarged plan view of the Example of Embodiment of this invention. It is a partial right sectional view of the Example of Embodiment of this invention. It is a partial right sectional view of the Example of Embodiment of this invention. It is explanatory perspective view of the Example of Embodiment of this invention.

1 to 12 show an example of an embodiment of the present invention, and as shown in FIGS. 1, 2, 6, 10, and 11, roughly, both ends of the shaft S of the rotor R of the motor are rotated. a rotor supporting mechanism a having a shaft receiving portion a ₁ · a ₁ of freely supportable opposed pair of V-shaped, endless rotating the rotor R and repression contact with the outer peripheral surface G of the rotor R of a rotary drive mechanism B having a driving belt B _1, save that the drive belt B ₁ from the drive position K in which the driving belt B ₁ is in contact with rotating drive mechanism B in the rotor R is away from the rotor R It is configured to include a retracting mechanism portion C for retracting to the position L and a cutting mechanism portion D provided with a bite T for cutting the outer peripheral surface G of the rotor R.

In this case, 1, 2, as shown in FIG. 9, the angle between the direction perpendicular Nd perpendicular to the rotation axis R ₀ in the running direction Bd and the rotor R of the drive belt B ₁ of the rotation drive mechanism B It is configured to include an inclination angle adjusting mechanism E that can be adjusted to a predetermined inclination angle θ, and a positioning portion F that abuts on one end of the shaft S of the rotor R.

Further, in this case, as shown in FIGS. 2 and 3, the cutting mechanism D1 for cutting the cutting mechanism D into the cutting mechanism D in the radial direction of the rotor R and the cutting mechanism D _{1 for} cutting the cutting mechanism D into the rotation axis R of the rotor R. It is provided with a feed mechanism D _{2 that feeds in the 0 direction.}

Further, in this case, as shown in FIG. 6, the drive belt B ₁ represents disposed over the outer peripheral surface G _U repression can contact a said drive position K of the rotor R, the byte T is lower periphery of the rotor R It is arranged at the cutting position Q where the surface G _{D is cut and cut.}

Further, in this case, as shown in FIGS. 1, 4, 5, and 12, the rotation drive mechanism unit B _{represses the drive belt B 1} on the outer peripheral surface G of the rotor R at the drive position K and winds it. roll pair of repression contact for hanging contact B ₂ · B ₂ and the by separating from the outer peripheral surface G of the rotor R in the retracted position L occurs between the rolls for the pair of elastic pressure contact B ₂ · B ₂ drive belt B ₁ to absorb the slack is stretched a driving belt B _1, in this case, the slack absorbing mechanism B ₃ having an absorption roll B ₆ capable repression drive belt B ₁ always between the pair of tension rolls B ₄ · B ₄ It is configured with.

Further, in this case, 10, 11, as shown in FIG. 12, the drive roll B _R the rotation driving mechanism part B is rotated by the drive motor B _M and the drive motor B _M for driving the drive belt B ₁ with it, the drive roll B _R and the drive belt B ₁ between the a pair of elastic pressure contact roll B ₂ · B ₂ is disposed wrapping, the retracting mechanism C roll drives the rotation driving mechanism portion B B the cylinder C ₁ for vertical swing about a rotational axis B _R0 of _R are configured to retract operation to the retracted position L from the drive position K.

Further, in this case, FIG. 1, as shown in FIG. 2, the pivot shaft E ₁ the inclination angle adjusting mechanism E is with pivot axis E ₁₀ orthogonal to the rotation driving mechanism part B to the rotational axis B _R0 of the drive roll B _R It is configured to be provided with a swivel adjustment mechanism E _{2 that can be swivel-adjustable as a center.}

In this case, in the rotor support mechanism portion A, as shown in FIGS. 1, 2, 6, 7, 8, and 9, a pair of bearings 2.2 are arranged to face each other on the machine body 1, and the bearings 2.2 are arranged. Two guide shafts 3 and 3 are erected between them, and two slides 4 and 4 are slidably provided between the guide shafts 3 and 3, and between each slide 4 and 4 and each bearing 2 and 2. Screw shafts 5 and 5 are erected, respectively, and slides 4 and 4 are provided so as to be able to move forward and backward by rotating the screw shafts 5 and 5 in the forward and reverse directions. ₁・ A ₁ is attached, and both ends of the shaft S of the rotor R of the motor are rotatably supported by the V-shaped bearing surfaces 6 and 6 of _{the shaft receiving parts A 1} and A _{1. In this case, the shaft} receiving a _1-a, respectively V-shaped receiving surface 6, 6 of ₁ industrial diamond material or other hard material of the hard material 6a-6a disposed, the electric motor by the normal and reverse rotation of the screw shaft 5, 5 It is configured to be compatible with the length and size of the shaft S of the rotor R.

Further, in this case, as shown in FIGS. 1 and 3, the rotation drive mechanism unit B is attached to the rocking machine 7 by a pair of tension _{contact rolls B 2} and B ₂ and a slack absorption mechanism B _3. roll _B 4 · _{B 4,} the guide roll _{B 5} and the driving roll _{B R} are arranged, these repression contact roll _B 2 · _{B 2,} a pair of tension rolls _B 4 · _{B 4} of the slack absorbing mechanism _{B 3,} guide roll B ₅ to the endless and driven roll B _R drive belt B ₁ is being constructed by winding disposed.

Further, in this case, as shown in FIGS. 1 and 2, in the retracting mechanism portion C, the tilt angle adjusting mechanism E, and the turning adjusting mechanism E ₂ , the swivel base 8 is mounted on the horizontal plane portion 1a of the machine body 1 and the swivel shaft E _{1 is used.} The swivel axis E ₁₀ is provided so that the swivel axis 8 can be swiveled around the center of the swivel axis E10. the swing cylinder C ₁ vertical swing cylinder C ₁ and disposed in the groove portion 8a · 1b escape the pivotally mounted by pivot 10, and pivotally by a connecting pin 11 to the vertical swing cylinder C ₁ of the rod to the rocker body 7 Further, in the positioning portion F, a stop pin 12 is provided on one of the pair of bearings 2 and 2 so as to be adjustable in advance and retreat, and a bolt 13 for fixing the stop pin 12 to the bearing 2 is provided. as shown in FIG. 9, by the thrust force P of the inclination angle θ by arising shown formed between a direction perpendicular Nd perpendicular to the rotation axis R ₀ in the running direction Bd and the rotor R of the drive belt B ₁ of the rotation drive mechanism B the rotor R is moved on the shaft receiving portion a ₁ · a ₁ is brought into contact with one end of the shaft S of the rotor R in the positioning unit F, positioning the rotor R with the shaft receiving portion a ₁ · a ₁ It is freely configured.

Further, in this case, as shown in FIGS. 1, 2, and 3, in the cutting mechanism D ₁ and the feeding mechanism D ₂ of the cutting mechanism D, the fixing base 14 is mounted on the slope 1c of the machine 1. The moving table 15 is provided on the fixed table 14 by a sliding mechanism 16 including a sliding portion 16a and a guide portion 16b so as to be _{movable in the direction of the rotation axis R0} of the rotor R, and the feeding motor 17 is provided on the fixed base 14. At the same time, the screw shaft 17a is erected on the fixing base 14 by the bearing plates 14a and 14a, the nut body 15a screwed to the screw shaft 17a is attached to the moving base 15, and the main shaft of the feed motor 17 and the screw shaft 17a are joined to the joint 17b. The cutting table 18 is connected to the moving table 15 by a sliding mechanism 19 including a sliding portion 19a and a guide portion 19b so that the cutting table 18 can be cut and moved in the radial direction orthogonal to _{the rotation axis R0 of the rotor R.} The cutting motor 20 is attached to the moving table 15, the screw shaft 20a is erected on the moving table 15 by the bearing plates 15b and 15b, and the nut body 20b screwed to the screw shaft 20a is attached to the cutting table 18 for cutting. a main shaft and the screw shaft 20a of the write motor 20 connected by joints 20c, mount the tool mount 21 to cut base 18, to cut cutting the lower outer peripheral surface G _D of the rotor R on the tool mount 21 A bite T is attached, for example, a bite T for shaving cutting used for precision cutting and finish cutting, and a bite T of various other shapes and materials are used, and a rotor is used by the bite T arranged at the cutting position Q. the lower outer peripheral surface G _D of R are configured to cut the cutting. As the arrangement angle α of the slope portion 1c with respect to the horizontal plane portion 1a in FIG. 1, for example, about 20 degrees to 45 degrees is adopted, and the larger the arrangement angle α is, the more the cutting mechanism portion D is driven with respect to the arrangement structure of the bite T. it is possible to increase the flexibility of Cyclic arrangement of belt B _1, it just makes it possible to increase the γ wrap angle of the drive belt B ₁ with respect to the outer peripheral surface of the rotor R, the rotor by the driving belt B ₁ The rotary drive of R can be reliably performed.

Since the example of this embodiment has the above configuration, as shown in FIG. 11, the rotation drive mechanism unit B is moved to the retracted position L where the _{drive belt B 1 is separated from the rotor R by the retracting mechanism portion C, and artificially or} automatically both ends of the shaft S of the rotor R of the electric motor is rotatably supported respectively on the rotor supporting mechanism unit opposed pair of V-shaped shaft receiving portion a ₁ · a ₁ of a, as shown in FIG. 10, The rotary drive mechanism B is operated so as _{to face the drive position K in which the drive belt B 1} contacts the rotor R from the retracted position L where the _{drive belt B 1} separates from the rotor R, and the rotary drive mechanism B is endless. driving the belt B ₁ in repression contact with the outer peripheral surface G of the rotor R to rotate the rotor R, byte T of the cutting mechanism D to rotate the rotor R by a drive belt B ₁ of the rotation drive mechanism B the results in cutting the outer peripheral surface G of the rotor R, Therefore, both end portions of the shaft S of the rotor R to the rotor supporting mechanism shaft receiving a ₁ · a ₁ opposed pair of V-shaped of a Since the outer peripheral surface G of the rotor R is cut by rotatably supporting each of them, the outer peripheral surface G of the rotor R having a high degree of concentricity between the outer peripheral surface G of the rotor R and the outer peripheral surface of the shaft S cutting can be performed, both ends of the shaft S of the rotor R is rotatably supported respectively on the rotor supporting mechanism shaft receiving a ₁ · a ₁ opposed pair of V-shaped of a, the rotary drive mechanism The endless drive belt B ₁ of B is elastically contacted with the outer peripheral surface G of the rotor R to rotate the rotor R, and the outer peripheral surface G of the rotor R is cut by the bite T of the cutting mechanism portion D. Therefore, the vibration of the rotor R due to rotation can be suppressed, the outer peripheral surface G of the rotor R having good roundness and surface roughness can be cut, and the outer peripheral surface G of the rotor R can be cut. It is possible to perform cutting with high accuracy, and the rotor R can be accurately arranged with a predetermined clearance on the stator of the electric motor. Damage to the rotor R can be prevented, the supply and removal of the rotor R can be easily performed, and the efficiency of the cutting process of the rotor R can be further improved.

In this case, 1, 2, as shown in FIG. 9, the angle between the direction perpendicular Nd perpendicular to the rotation axis R ₀ in the running direction Bd and the rotor R of the drive belt B ₁ of the rotation drive mechanism B an inclination angle adjusting mechanism E can be adjusted to a predetermined inclination angle theta, because they constitute and a positioning portion F which abuts the one end portion of the shaft S of the rotor R, the traveling direction Bd of the drive belt B ₁ And the thrust force P generated by the inclination angle θ formed by the orthogonal direction Nd orthogonal to the rotation axis R ₀ of the rotor R, one end of the shaft S of the rotor R abuts on the positioning portion F to cause the rotor R to come into contact with the positioning portion F. can be positioned in the shaft receiving portion a ₁ · a _1, a positioning structure of a rotor R can be simplified, easily performed that the supply and removal of the rotor R with respect to the shaft receiving portions a ₁ · a ₁ In this case, as shown in FIGS. 1, 2, and 3, the cutting mechanism D ₁ and the cutting tool T that cut the cutting mechanism D into the cutting mechanism D in the radial direction of the rotor R are rotated. Since the feed mechanism D ₂ for feeding the child R in the rotation axis R ₀ direction is provided, the bite T is cut in the radial direction of the rotor R and fed in _{the rotation axis R 0 direction of the rotor R.} the outer peripheral surface G of the rotor R can be accurately machined by, also in this case, as shown in FIG. 6, the drive belt B ₁ represents possible repression contact with the upper outer peripheral surface G _U of the rotor R Since the bite T is arranged at the drive position K and the bite T is _{arranged at the cutting position Q for cutting and cutting the lower outer peripheral surface G D} of the rotor R, the drive of the rotation drive mechanism unit B for rotating the rotor R is performed. Mutual interference between the elastic contact operation of the belt B ₁ and the cutting operation and the feed operation of the bite T can be avoided, and the winding angle γ _{of the drive belt B 1 with respect to the outer peripheral surface G of the rotor R can be increased.} This makes it possible _{to reliably rotate the rotor R by the drive belt B 1} , and to satisfactorily cut the outer peripheral surface G of the rotor R.

Further, in this case, as shown in FIGS. 6, 10 and 11, the rotary drive mechanism B presses the drive belt B ₁ against the outer peripheral surface G of the rotor R at the drive position K to bring it into contact with the outer peripheral surface G. the slack in the drive belt B ₁ occurring between the rolls for the pair of elastic pressure contact B ₂ · B ₂ by separating from the outer peripheral surface G of the rotor R of the pair of elastic pressure contact roll B ₂ · B ₂ and the retreat position L since absorption to constitute comprise the slack absorbing mechanism B ₃ having an absorption roll B ₆ to tension the drive belt B _1, the travel of the driving rotation and drive belt B ₁ of the rotor R by the drive belt B ₁ smoothly can be performed, the cutting of the rotor R can be satisfactorily performed, also in this case, 10, as shown in FIG. 11, the rotation driving mechanism part B for driving for driving the driving belt B ₁ It becomes a driving roll B _R which is rotated by the motor B _M and the drive motor B _M, the drive belt B ₁ is meshed disposed between the drive roll B _R and the pair of elastic pressure contact roll B ₂ · B ₂ is, the retracting mechanism C is configured to retract operation from the driving position K by the vertical swing cylinder C ₁ rotation driving mechanism section B around the rotation axis B _R0 of the drive roll B _R to the retreat position L Therefore, the structure of the retracting mechanism portion C can be simplified, the retracting operation from the driving position K to the retracting position L can be smoothly performed, and in this case, FIGS. 1, 2 and 2. as shown in FIG. 9, the inclination angle adjusting mechanism E is swivel adjustable swivel adjusted about a pivot axis E ₁ having a pivot axis E ₁₀ orthogonal to the rotation driving mechanism part B to the rotational axis B _R0 of the drive roll B _R Since the mechanism E ₂ is provided, the structure of the tilt angle adjusting mechanism E can be simplified, and the traveling direction Bd of _{the drive belt B 1 and the orthogonal direction orthogonal to the rotation axis R 0} of the rotor R are orthogonal to each other. The angle formed by Nd can be adjusted to a predetermined inclination angle θ, the rotor R can be smoothly rotated by adjusting the thrust force P, and one end of the shaft S of the rotor R can be positioned at the positioning portion F. The outer peripheral surface G of the rotor R can be satisfactorily cut.

The present invention is not limited to the embodiment of the above embodiment, the rotor R, the shaft S, the structure of the byte T, the rotor support mechanism A, the shaft receiving portion A ₁ · A _1, the rotation drive mechanism B , the drive belt _{B 1,} repression contact roll _B 2 · _{B 2,} the slack absorbing mechanism _{B 3,} absorbing roller _{B 6,} the driving motor _{B M,} drive roll _{B R,} the traveling direction Bd, the rotation axis _{B R0,} retracting mechanism C, Cylinder for vertical swing C ₁ , Cutting mechanism D, Cutting mechanism D ₁ , Feed mechanism D ₂ , Tilt angle adjustment mechanism E, Swivel shaft E ₁ , Swivel adjustment mechanism E ₂ , Swivel axis E ₁₀ , Positioning unit F The structure and inclination angle θ of are appropriately changed and designed.

As mentioned above, the intended purpose can be sufficiently achieved.

R Rotor S Shaft T-bite A Rotor support mechanism A ₁ Shaft receiving part B Rotation drive mechanism B ₁ Drive belt B ₂ Repulsion contact roll B ₃ Loose absorption mechanism B ₆ Absorption roll _BM Drive motor _BR drive Roll Bd Traveling direction _BR0 Rotating axis C Retracting mechanism C ₁ Vertical swing cylinder D Cutting mechanism D ₁ Cutting mechanism D ₂ Feeding mechanism E Tilt angle adjustment mechanism E ₁ Swing axis E ₂ Swing adjustment mechanism E ₁₀ Swing axis F Positioning part G outer peripheral surface G _U upper outer peripheral surface G _D lower outer peripheral surface K drive position L retract position R ₀ rotation axis Nd orthogonal direction Q cutting position θ tilt angle

Claims (8)

When cutting the outer peripheral surface of the rotor of an electric motor with a cutting tool, the rotation drive mechanism unit is retracted to a retracted position where the drive belt separates from the rotor, and both ends of the rotor shaft are retracted by the retractor mechanism. The drive belt is rotatably supported by a pair of V-shaped shaft receiving portions facing each other of the support mechanism portion, and the drive belt comes into contact with the rotor from a retracted position where the drive belt separates from the rotor. The rotor is operated to face the drive position, the endless drive belt of the rotation drive mechanism unit is elastically contacted with the outer peripheral surface of the rotor to rotate the rotor, and the rotor is rotated by the drive belt of the rotation drive mechanism unit. A rotor cutting method for an electric motor, which comprises cutting the outer peripheral surface of the rotor with a cutting tool of a cutting mechanism portion. A rotor cutting machine that cuts the outer peripheral surface of the rotor of an electric motor with a cutting tool, and is provided with a pair of opposed V-shaped shaft receiving portions capable of rotatably supporting both ends of the rotor shaft. A support mechanism unit, a rotation drive mechanism unit provided with an endless drive belt that elastically contacts the outer peripheral surface of the rotor to rotate the rotor, and the rotation drive mechanism unit as the rotor and the drive belt It is provided with a retracting mechanism unit for retracting the drive belt from a contacting drive position to a retracting position where the drive belt separates from the rotor, and a cutting mechanism unit provided with a cutting tool for cutting the outer peripheral surface of the rotor. A featured rotor cutting machine for electric motors. An inclination angle adjusting mechanism capable of adjusting the angle formed by the traveling direction of the drive belt of the rotation drive mechanism unit and the orthogonal direction orthogonal to the rotation axis of the rotor to a predetermined inclination angle, and one end of the shaft of the rotor. The rotor cutting machine for an electric motor according to claim 2, further comprising a positioning portion that comes into contact with the portions. The claim is characterized in that the cutting mechanism portion is provided with a cutting mechanism for cutting the cutting tool in the radial direction of the rotor and a feeding mechanism for feeding the cutting tool in the direction of the rotation axis of the rotor. The rotor cutting machine for an electric motor according to 2 or 3. The drive belt is arranged at the drive position where the upper outer peripheral surface of the rotor can be elastically contacted, and the bite is arranged at the cutting position where the lower outer peripheral surface of the rotor is cut and cut. The rotor cutting machine for an electric motor according to any one of claims 2 to 4. The rotary drive mechanism unit is a pair of rolls for pressure contact in which the drive belt is compressed and wound on the outer peripheral surface of the rotor at the drive position, and a pair due to separation from the outer peripheral surface of the rotor at the retracted position. 2. The rotor cutting machine for motors described. The rotary drive mechanism unit includes a drive motor for driving the drive belt and a drive roll rotated by the drive motor, and the drive belt is wound between the drive roll and the pair of pressure contact rolls. 6. The rotor cutting machine for motors described. 7. The rotor cutting machine for electric motors according to item 1.

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