KR102170734B1 - Method for manufacturing coil module for linear motor - Google Patents

Abstract

The method of manufacturing a coil module for a linear motor according to the present invention includes a core preparation step of preparing a core having m core teeth arranged in a row, and preparing m*n small coils that can be coupled to n number of core teeth. A multistage coil is formed by preparing a small coil, combining the n small coils to each of the core teeth of the core, and connecting the n small coils connected to each of the core teeth of the core in parallel. And forming a multi-stage coil forming step.

Description

Method for manufacturing coil module for linear motor {Method for manufacturing coil module for linear motor}

The present invention relates to a method of manufacturing a coil module for a linear motor.

In the linear motor, a coil module including a core having core teeth arranged in a row and coils coupled to the core teeth is used to generate a magnetic field by a driving power source. The force of the linear motor is proportional to the number of turns of the coil of the coil module and the amount of current flowing through the coil. On the other hand, when the linear motor operates, the magnitude of the back electromotive force generated in the coil module is proportional to the number of turns of the coil and the operating speed of the linear motor. Therefore, high-speed linear motors used in high-speed applications are manufactured with a lower number of coil turns compared to low-speed linear motors used in low-speed applications in order to limit the magnitude of the back EMF to a suitable range. Because of this, the current flowing through the coil must be larger to compensate for this. When the current flowing through the coil increases in this way, a thick wire must be used for the coil to reduce heat loss and prevent the coil from burning.

In short, the coil module of the low-speed linear motor is manufactured using a thin wire, and the coil module of the high-speed linear motor is manufactured using a thick wire. Therefore, different designs, different parts, and different production facilities are required when manufacturing a low-speed linear motor and when manufacturing a high-speed linear motor.

Japanese Unexamined Patent Application Publication No. Hei 11-113239 (1999.04.23.)

The present invention provides a method of manufacturing a coil module for a linear motor capable of manufacturing a coil module for a high speed linear motor in the same manufacturing environment as in the case of a low speed linear motor.

In the method of manufacturing a coil module for a linear motor according to an embodiment of the present invention, in the method of manufacturing a coil module for a linear motor, a core preparation step of preparing a core having m core teeth arranged in a row-m is an integer of 2 or more , Small coil preparation step of preparing m*n small coils that can be coupled to n number of core teeth-n is an integer greater than or equal to 2, small coil combination combining n number of small coils to each of the core teeth of the core And a multistage coil forming step of forming a multistage coil by connecting the n number of small coils coupled to each of the core teeth of the core in parallel with each other.

In one embodiment, a second core preparation step of preparing a second core having k core teeth identical to the core tooth of the core-k is an integer of 2 or more, consisting of the same wire as the small coil, to the core tooth It characterized in that it further comprises a large coil preparation step of preparing k large coils to which one can be coupled, and a large coil coupling step of coupling the one large coil to each of the core teeth of the second core.

In one embodiment, the inner diameter of the small coil corresponds to the outer diameter of the core tooth, the length of the small coil is 1/n or less of the length of the core tooth, and n number of core teeth coupled to each of the core teeth of the core The small coils are stacked in the axial direction of the core tooth.

In one embodiment, the small coil and the large coil have the same inner diameter, and the length of the small coil is less than 1/n times the length of the large coil.

In one embodiment, the small coil and the large coil have the same inner diameter, and the length of the small coil is 1/n times the length of the large coil.

In one embodiment, n is characterized in that 3.

In one embodiment, k is characterized as equal to n.

In one embodiment, it is characterized in that it further comprises a multi-stage coil connection step of serially connecting the multi-stage coils of the core teeth corresponding to the same phase among the core teeth of the core.

The present invention includes a coil module and a linear motor manufactured by the method for manufacturing a coil module for a linear motor described above.

According to the present invention, it is possible to manufacture both a low-speed linear motor and a high-speed linear motor with the same parts and equipment without separate design.

1 is a view schematically showing the configuration of a coil module for a low-speed linear motor manufactured according to an embodiment of the present invention.
2 is a diagram schematically showing the configuration of a coil module for a high-speed linear motor manufactured according to the first embodiment of the present invention.
3 is a diagram schematically showing a configuration of a coil module for a high speed linear motor manufactured according to a second embodiment of the present invention.
4 is a diagram schematically showing a partial configuration of a coil module for a high-speed linear motor manufactured according to a third embodiment of the present invention.
5 is a flow chart showing the flow of a method of manufacturing a coil module for a linear motor according to an embodiment of the present invention.
FIG. 6 is a flowchart illustrating additional steps when manufacturing a coil module for a high-speed linear motor by the method shown in FIG. 5 and additionally manufacturing a coil module for a low-speed linear motor using the same parts and equipment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to clarify the technical idea of the present invention. In describing the present invention, when it is determined that a detailed description of a related known function or component may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. Constituent elements having substantially the same functional configuration among the drawings are assigned the same reference numerals and reference numerals as much as possible, even if they are indicated on different drawings. If necessary for convenience of explanation, the device and the method will be described together.

1 is a view schematically showing the configuration of a coil module for a low-speed linear motor manufactured according to an embodiment of the present invention. Referring to FIG. 1, the coil module 100 for a low-speed linear motor manufactured according to an embodiment of the present invention includes a core 110 and a core tooth 111 having a plurality of core teeth 111 arranged in a row. It includes coils 120 coupled to. In FIG. 1, 12 core teeth 111 and 12 coils 120 are each shown. For convenience of identification, reference numerals are indicated on only the rightmost one. The core teeth 111 are not necessarily arranged in a straight line, but may be arranged in a slightly curved shape depending on the application. Such a coil module for a linear motor may be used for a stator or a mover, and for convenience, a case of being used for a stator will be described below.

Typically, in the case of a three-phase linear motor, the number of core teeth 111 is a multiple of 3. The coil module shown in FIG. 1 is for a three-phase linear motor and includes four core teeth 111 for each of U, V, and W three phases.

Among the core teeth 111, the coils 120 of the core teeth 111 corresponding to the same phase are connected in series with each other. That is, the coils 120 of the core teeth 111 corresponding to U1, U2, U3, and U4 are connected in series with each other, and the coils 120 of the core teeth 111 corresponding to V1, V2, V3, and V4 are They are connected in series with each other, and the coils 120 of the core teeth 111 corresponding to W1, W2, W3, and W4 are connected in series with each other. 1 shows only the connection between the coils 120 of the core teeth 111 corresponding to the U phase, for convenience of identification, and the connection between the coils 120 of the core teeth 111 corresponding to the V phase and the W phase. The illustration of is omitted. A tap of one end of the coils connected in series on the _U may be connected to the driving power source V _U of the U phase, and the tap of the other end may be connected to a neutral point (N). The same is true for the V and W phases.

Hereinafter, a method of manufacturing a coil module for a high-speed linear motor using the components and manufacturing equipment of the coil module for a low-speed linear motor as illustrated in FIG. 1 will be described.

First Example

2 is a diagram schematically showing the configuration of a coil module for a high-speed linear motor manufactured according to the first embodiment of the present invention. Referring to FIG. 2, the coil module 200 for a high speed linear motor manufactured according to the first embodiment of the present invention includes a plurality of core teeth 111 arranged in a row, similar to the coil module 100 for a low speed linear motor of FIG. ) Includes a core 110 and coils 120 coupled to the core teeth 111.

However, unlike the coil module 100 for a low speed linear motor of FIG. 1, in the coil module 200 for a high speed linear motor of FIG. 2, the coil 120 of the core teeth 111 corresponding to the same phase among the core teeth 111 Connect them in parallel. That is, the coils 120 of the core teeth 111 corresponding to U1, U2, U3, and U4 are connected in parallel to each other, and the coils 120 of the core teeth 111 corresponding to V1, V2, V3, and V4 are connected to each other. In parallel connection, the coils 120 of the core teeth 111 corresponding to W1, W2, W3, and W4 are connected in parallel to each other. 2 shows only the connection between the coils 120 of the core teeth 111 corresponding to the U phase, for convenience of identification, and the connection between the coils 120 of the core teeth 111 corresponding to the V phase and the W phase. The illustration of is omitted.

When the coils 120 of the core teeth 111 corresponding to the same phase are connected in parallel to each other, even if the same wire is used, the resistance of the entire coil of each phase is lowered, thereby obtaining an effect similar to that of manufacturing a coil using a thick wire. You will be able to. In the coil module 100 for a low-speed linear motor shown in FIG. 1, the four coils 120 of each phase are connected in series with each other, whereas the coil module 200 for a high-speed linear motor shown in FIG. Since the two coils 120 are connected in parallel with each other, the resistance value of each phase is reduced to 1/16. In addition, since the number of turns of the coil is the same as lowering to 1/4, the back EMF value is lowered to 1/4 at the same speed, and when the same current flows, the force decreases to 1/4. That is, the back EMF constant and the force constant of the motor are reduced to 1/4. Since the back EMF constant is reduced to 1/4, it is possible to achieve a speed of about 4 times at the same driving voltage. Meanwhile, since the coils 120 of the two coil modules 100 and 200 use the same wire, they have the same rated current value, and therefore the coil module 200 for a high-speed linear motor of FIG. 2 is for a low-speed linear motor of FIG. It is possible to pass four times more current than the coil module 100. Therefore, even if the force constant is lowered to 1/4, the same force can be generated by passing the current four times as much. Motor constant is not affected by winding method and therefore does not change.

In this way, when the same core 110 and the same coil 120 are used, but the coils 120 of the core teeth 111 corresponding to the same phase are connected in parallel instead of serially connected to each other, the motor design may be redesigned. Linear motors for different applications can be manufactured using the same parts and the same manufacturing equipment without the need. In other words, in manufacturing the coil module 100 for a low-speed linear motor used in low-speed applications and the coil module 200 for a high-speed linear motor used in high-speed applications, the core 100, the coil 120, the wire forming the coil, etc. It is possible to share parts of the same and use the same core manufacturing facility or coil manufacturing facility. In particular, the manufacturing and maintenance cost of a winding machine for manufacturing a coil by winding a specific wire in a specific shape is high. The coil module 100 for a low-speed linear motor and the coil module 200 for a high-speed linear motor according to the present invention have a core tooth 111 Since the shape of) and the wires constituting the coil 120 are the same, the same winding machine can be used, thereby greatly reducing the cost of manufacturing equipment. In addition, since the same parts are shared for linear motors used in different applications, it is possible to significantly reduce the burden of parts inventory according to demand forecasts.

However, the coil module 200 for a high-speed linear motor shown in FIG. 2 has a disadvantage in that the motor can be controlled only when the mover covers the entire coil module 200. This is because, when a mover equipped with a permanent magnet or the like is only on a part of the coil module 200, a load is applied only to the coils 120 under the mover, so that current flows only to the coils 120 that are not loaded. For example, looking at the case where the mover covers from U1 to W2, the coils 120 of U1 and U2 under the mover in the U phase have impedance by the mover, but the coils 120 of U3 and U4 that are out of the mover. ) Do not generate impedance due to the mover. However, since the coils 120 of U1, U2, U3, and U4 are connected in parallel with each other, most of the current by the driving power flows only to the coils 120 of U3 and U4, and the current flows to the coils 120 of U1 and U2. It hardly flows. Therefore, the magnetic field is hardly generated by the coils 120 of U1 and U2. Since the mover is only on the coils 120 of U1 and U2, the mover cannot be controlled by the magnetic field.

Therefore, the high-speed linear motor coil module 200 shown in FIG. 2 has a very limited range in which a mover can be controlled. Typically, the length of the coil module 200 is about 250mm and the length of the mover is 270~720mm.For example, if the length of the coil module 200 is 250mm and the length of the mover is 500mm, the mover may use the coil module 200 It is possible to control the mover only in the range of 250mm that is completely covered. If the length of the mover is 270 mm, the control of the mover is only possible in the range of 20 mm, and the motor becomes ineffective.

Second Example

3 is a diagram schematically showing a configuration of a coil module for a high speed linear motor manufactured according to a second embodiment of the present invention. Referring to FIG. 3, the coil module 300 for a high-speed linear motor manufactured according to the second embodiment of the present invention includes a plurality of core teeth 111 arranged in a row, similar to the coil module 100 for a low-speed linear motor of FIG. 1. ) Includes a core 110 and coils 120 coupled to the core teeth 111.

However, unlike the coil module 100 for a low-speed linear motor of FIG. 1, the coil module 200 for a high-speed linear motor of FIG. 2 is a coil 120 of the core teeth 111 corresponding to the same phase among the core teeth 111. Connect them in a combination of series and parallel. Looking at the case of the U phase, the coils 120 of the core teeth 111 corresponding to U1 and U3 are connected in series with each other, the coils 120 of the core teeth 111 corresponding to U2 and U4 are connected in series with each other, The series connected coils of U1 and U3 and the series connected coils of U2 and U4 are connected in parallel with each other. The V-phase and W-phase are also connected in the same manner, and FIG. 3 shows only the connection between the coils 120 of the core teeth 111 corresponding to the U-phase, for identification convenience, and the core teeth 111 corresponding to the V-phase and W-phase. ) The illustration of the connection between the coils 120 are omitted.

When connected in this way, even if the same wire is used, the resistance of the entire coil of each phase is lowered, and an effect similar to that of manufacturing a coil using a thick wire can be obtained. That is, compared to the coil module 100 for a low-speed linear motor shown in FIG. 1, the coil module 300 for a high-speed linear motor shown in FIG. 3 has a resistance value of each phase lowered to 1/4, at the same speed. The back electromotive force value decreases by 1/2, and when the same current flows, the force decreases by 1/2. That is, the back EMF constant and force constant of the motor are reduced to 1/2. Therefore, it is possible to achieve twice the speed at the same driving voltage and to generate the same power by passing twice as much current. The motor constant is not changed.

Even in the case of manufacturing the coil module 300 for a high-speed linear motor as shown in FIG. 3, the same components and the same manufacturing facilities can be used without redesigning the motor as described with reference to FIG. 2.

However, the coil module 300 for a high-speed linear motor shown in FIG. 3 has a disadvantage in that the motor can be controlled only when the mover covers more than half of the coil module 200. Looking at the U phase, for example, if the mover is only above U1, the impedance by the mover occurs only in the series connected coil of U1 and U3, and the impedance by the mover does not occur in the series connected coil of U2 and U4. Most of the current flows only through the series connected coils of U2 and U4, and little current flows through the series connected coils of U1 and U3. Therefore, the magnetic field is hardly generated by the coils 120 of U1 and U2. Since the mover is only on the coil 120 of U1, the mover cannot be controlled by the magnetic field. At least the mover must cover U1 and U2 to control the mover.

Third Example

4 is a diagram schematically showing a partial configuration of a coil module for a high-speed linear motor manufactured according to a third embodiment of the present invention. For better understanding, only one core tooth 111 is shown enlarged in FIG. 4. The coil module 400 for a high speed linear motor manufactured according to the third embodiment of the present invention shown in FIG. 4 is also shown in FIG. Like the coil module 100 for a linear motor, the core 110 includes a plurality of core teeth 111 arranged in a row. 4, a plurality of the same small coil 141 is coupled to one core tooth 111 of the coil module 400 for a high speed linear motor, and a plurality of small coils 141 coupled to one core tooth 111 They are connected in parallel to each other to form a multistage coil 140. In FIG. 4, for convenience of identification, the small coils 141 are shown to be spaced apart from each other. Preferably, the small coils 141 may be arranged so as to be adjacent to each other. The multistage coils 140 of the core teeth 111 corresponding to the same phase among the plurality of core teeth 111 may be connected in series with each other as in the coil module 100 for a low speed linear motor of FIG. 1.

The multistage coil 140 refers to a plurality of small coils 141 stacked in the axial direction of the core tooth 111 are connected in parallel to each other. The small coil 141 is made of the same wire as the coil 120 of FIG. 1, but refers to a coil manufactured short so that a plurality of them can be stacked and coupled to one core tooth 111. The coil 120 of FIG. 1, which is a size that can be coupled to one core tooth 111, corresponds to the small coil 141 and may be referred to as a large coil.

The inner diameter of the small coil 141 corresponds to the outer diameter of the core tooth 111. That the inner diameter of the small coil 141 corresponds to the outer diameter of the core tooth 111, the inner diameter of the small coil 141 is the outer diameter of the core tooth 111 so that the small coil 141 can be coupled to the core tooth 111 Is substantially equal to or slightly smaller than

When n small coils 141 are stacked, the length of the small coils 141 may be manufactured to be 1/n or less of the length of the core tooth 111. Here, the length of the coil refers to the length, that is, the height in the axial direction of the core tooth 111. Preferably, the length of the small coil 141 may be manufactured to be 1/n of the length of the core tooth 111, in this case, the length of the multistage coil 140 is the same as the length of the core tooth 111 . It goes without saying that the length of the small coil 141 may be made much smaller than 1/n of the length of the core tooth 111 as necessary so that the length of the multistage coil 140 is much smaller than the length of the core tooth 111 .

The length of the large coil 120 may be manufactured to be less than the length of the core tooth 111, and preferably, the length of the large coil 120 may be manufactured to be the same as the length of the core tooth 111.

The small coil 141 and the large coil 120 have the same inner diameter. Preferably, the outer diameters of the small coil 141 and the large coil 120 are also the same. It is preferable that the outer diameter of the coil is manufactured to almost fill the space between the core teeth 111.

The length of the small coil 141 may be manufactured to be less than 1/n times the length of the large coil 120, and preferably may be manufactured to be equal to 1/n times the length of the large coil 120 . Of course, it can be seen that there are some errors in manufacturing as substantially the same.

When the length of the small coil 141 is manufactured to be 1/n times the length of the large coil 120, the number of turns and resistance of the small coil 141 are 1/n times the number of turns and resistance of the large coil 120, respectively. do. Actually, the number of turns and resistance of the small coil 141 may be slightly smaller than 1/n times the number of turns and resistance of the large coil 120, respectively, depending on the manufacturing process and the shape of the coil.

If the linear motor is manufactured as in this embodiment, even if the same wire is used, the resistance of the entire coil of each phase is lowered, and an effect similar to that of manufacturing the coil using a thick wire can be obtained. For example, when the length of the small coil 141 is 1/3 of the length of the large coil 120 and three small coils 141 are used for each core tooth 111, a coil module for a high speed linear motor ( 400) is the same as that the resistance value of each phase is lowered to 1/9 and the number of turns of the coil is lowered to 1/3, compared to the coil module 100 for a low speed linear motor shown in FIG. Is lowered by 1/3, and when the same current flows, the force is reduced by 1/3. That is, the back EMF constant and force constant of the motor are reduced to 1/3. Therefore, it is possible to achieve a speed of about 3 times at the same driving voltage, and to generate the same force by passing 3 times as much current. The motor constant is not changed. Unlike the first and second embodiments, the coil module 400 for a high-speed linear motor according to the third embodiment can control the motor even if the mover is on only one core tooth 111.

Even in the case of manufacturing the coil module 400 for a high-speed linear motor as shown in FIG. 4, the same components and the same manufacturing equipment can be used without redesigning the motor as described with reference to FIG. 2. The coil module 400 for a high-speed linear motor of FIG. 4 uses a small coil 141 instead of the large coil 120 such as the coil module 100 for a low-speed linear motor of FIG. 1, but the shape of the core tooth 111 Since the wires constituting the coil 120 are the same, it is still possible to use the same winding machine. That is, the small coil 141 can be manufactured by using the same wire and winding machine as the wire for manufacturing the large coil 120 as it is, but shortening the length of the coil. In addition, when a thin line is used to make a high-speed liner motor, when a thin line is used, the dot ratio of the coil can be increased, thereby reducing waste of space between the core teeth 111 and increasing the amount of current.

The fact that the wires of the large coil 120 and the small coil 141 are the same may include a case where the wires are not only the same, but also there is a slight difference in the degree that the same winding machine can be used when manufacturing the coil. On the other hand, in order to share parts, it is preferable to use the same core as the core of the coil module for a low-speed linear motor 100 as the core of the coil module 400 for a high-speed linear motor. You may. However, since the core tooth 111 of the coil module 400 for a high speed linear motor and the coil module 100 for a low speed linear motor are the same, the same reference numerals are given. Here, the same core tooth means that they have the same shape, and if there is a slight difference in the degree that the same winding machine can be used when manufacturing the coil, it can be regarded as substantially the same.

It is also possible to manufacture various linear motors while attempting to unify parts by connecting the small coils 141 in series and parallel. The combination of series and parallel connection means that i small coils in each group are selected for j groups of i small coils among the plurality of small coils 141 coupled to one core tooth 111. It refers to connecting each other in series and connecting j groups in parallel. For example, after manufacturing the length of the small coil 141 to about 1/6 of the length of the core tooth 111, while combining 1 to 6 small coils 141 to one core tooth 111, one When the small coils 141 coupled to the core tooth 111 are connected including a combination of series and parallel, the resistance of the multistage coil 140 is 5/6 compared to the case where all the small coils 141 are connected in series, It can be 2/3, 1/2, 1/3, 1/4, 1/6, 1/9, 1/12, 1/18, 1/24, 1/30, 1/36, etc.

5 is a flow chart showing the flow of a method of manufacturing a coil module for a linear motor according to an embodiment of the present invention. 5 includes a method of manufacturing a coil module 400 for a high-speed linear motor according to a third embodiment of the present invention. Referring to FIG. 5, a method of manufacturing a coil module for a linear motor according to an embodiment of the present invention includes a core preparation step (S510) of preparing a core having m core teeth 111 arranged in a row. Where m is an integer of 2 or more. For example, a core can be manufactured by laminating a plurality of silicon steel sheets having the same shape.

The method for manufacturing a coil module for a linear motor according to an embodiment of the present invention includes a small coil preparation step (S520) of preparing m*n small coils 141 that can be coupled to one core tooth 111, and A small coil coupling step (S530) of coupling the n small coils 141 to each of the core teeth 111 of the core. Where n is an integer of 2 or more. When n is 3, a coil module 400 for a high-speed linear motor capable of generating a speed of about three times while generating the same force as compared to the coil module 100 for a low-speed linear motor can be manufactured.

The small coil 141 can be manufactured using a winding machine. After the small coil 141 is manufactured, it is coupled to the core tooth 111, and a small coil 141 is manufactured by directly winding a wire around the core tooth 111, while simultaneously attaching the small coil 141 to the core tooth 111. Combining can be seen as substantially the same.

A method of manufacturing a coil module for a linear motor according to an embodiment of the present invention includes a multi-stage coil 140 formed by connecting n small coils 141 coupled to each of the core teeth 141 of a core in parallel. By including the coil forming step (S540) it is possible to manufacture the coil module 400 for a high-speed linear motor.

A method of manufacturing a coil module for a linear motor according to an embodiment of the present invention is a multi-stage coil connection in which the multi-stage coils 140 of the core teeth 111 corresponding to the same phase among the core teeth 111 of the core are connected in series with each other. It may further include a step.

6 illustrates additional steps when manufacturing the coil module for a high speed linear motor 400 by the method shown in FIG. 5 and additionally using the same parts and equipment to manufacture the coil module 100 for a low speed linear motor. It is a flow chart. 6, a method of manufacturing a coil module for a linear motor according to an embodiment of the present invention includes, in addition to the steps described in connection with FIG. 5, a core tooth 111 of the core of the coil module 400 for a high speed linear motor. A second core preparation step (S610) of preparing a second core having k core teeth 111 identical to that of the high speed linear motor coil module 400, consisting of the same wire as the small coil 141, the core tooth Large coil preparation step (S620) of preparing k large coils 120 that can be coupled to one (111), and one large coil 120 is coupled to each of the core teeth 111 of the second core By further including a large coil coupling step (S630) to manufacture the coil module 100 for a low-speed linear motor. Here, k is an integer of 2 or more, preferably the same number as m.

A method of manufacturing a coil module for a linear motor according to an embodiment of the present invention includes a large coil 120 of the core teeth 111 corresponding to the same phase among the core teeth 111 of the second core connected in series with each other. The coil connection step may be further included.

According to the present invention, by unifying parts and unifying production facilities in manufacturing linear motors of various specifications, design costs, manufacturing costs, and inventory burden costs can be greatly reduced, and the cost of linear motors can be reduced. do. The present invention includes a coil module and a linear motor manufactured according to an embodiment of the present invention.

Table 1 shows actual specifications of a low-speed linear motor and a high-speed linear motor manufactured with the same parts and equipment according to the third embodiment of the present invention.

Parameters Symbol Units Low speed linear motor High speed linear motor Continuous Force F _c N 105 90 Peak Force F _p N 316 271 Continuous Current I _c@Tmax A _rms One 3 Peak Current I _p A _rms 3 9 Force Constant K _f N/A _rms 105 30 Electrical Time Constant Τ _e ms 7.4 7.9 Back EMP Constant (ph-ph) K _e V _rms /m/s 60.7 17.4 Resistance (ph-ph at 25℃) R _s Ω 23.7 2.1 Inductance (ph-ph) L _s mH 176 16.8 Motor Constant K _M N/√W 15.5 14.8 Coil Mass M _c kg 1.6 1.6 Maximum Speed V _max m/s 2 5 Continuous Power P _c W 210 451 Pole Pitch - Mm 15 15 Thermal Resistance - ℃/W 2.03 2.51 Resistance (ph at 100℃) - Ω 15.3 1.4 Input Voltage (ph) - V _peak 150 150

The low-speed linear motor of the above table uses a large coil 120 as shown in FIG. 1, and the high-speed linear motor uses three small coils 141 as shown in FIG. 4. The resistance and the number of turns of the small coil 141 are slightly smaller than 1/3 times the resistance and the number of turns of the large coil 120. Looking at the table, it can be seen that the resistance value of a high-speed linear motor is slightly smaller than 1/9 times compared to a low-speed linear motor. The force constant is slightly less than 1/3 times that of a low-speed linear motor, but the rated current is 3 times, so it can produce similar force. When the rated current flows, the driving speed of the motor is 2.5 times higher than that of a low-speed linear motor, but since the back EMF constant is slightly less than 1/3 times, the back EMF is lower even though the speed is much faster than that of a low-speed linear motor. That is, when a low-speed linear motor is operated at 2m/s, the back EMF is 70V _rms (ph), and when a high-speed linear motor is operated at 5m/s, the back EMF is only 50V _rms (ph). The rated power is slightly less than 2.5 times. The motor constant is slightly smaller for high-speed linear motors than for low-speed linear motors. As described above, according to the method of manufacturing a linear motor coil module according to the present invention, it is possible to produce a high-speed linear motor having completely different specifications by using the same parts and equipment as the low-speed linear motor.

So far, the present invention has been looked at in detail centering on the preferred embodiments shown in the drawings. These embodiments are not intended to limit the present invention, but are merely illustrative, and should be considered from an illustrative point of view rather than a restrictive point of view. The true technical protection scope of the present invention should be determined not by the above description but by the technical spirit of the appended claims. Although specific terms have been used in the present specification, they are used only for the purpose of describing the concept of the present invention, and not for limiting the meaning or limiting the scope of the present invention described in the claims. Each step of the present invention need not necessarily be performed in the order described, and may be performed in parallel, selectively or individually. Those of ordinary skill in the technical field to which the present invention pertains will understand that various modifications and other equivalent embodiments are possible without departing from the essential technical idea of the present invention claimed in the claims. It is to be understood that equivalents include not only currently known equivalents, but also equivalents to be developed in the future, that is, all components invented to perform the same function regardless of structure.

Claims (10)

In the coil module manufacturing method for a linear motor for manufacturing a coil module for a high-speed linear motor and a coil module for a low-speed linear motor using the same parts,
Core preparation step of preparing a core provided with m core teeth arranged in a line-m is an integer of 2 or more;
Small coil preparation step of preparing m*n small coils capable of being coupled to n number of core teeth-n is an integer of 2 or more;
A small coil coupling step of coupling n of the small coils to each of the core teeth of the core; And
Performing a multi-stage coil forming step of forming a multi-stage coil by connecting the n number of small coils coupled to each of the core teeth of the core in parallel to each other to manufacture the high-speed linear motor coil module,
A second core preparation step of preparing a second core having k core teeth identical to the core teeth of the core-k is an integer of 2 or more;
A large coil preparation step of preparing k large coils that can be coupled to one core tooth made of the same wire as the small coil; And
A method for manufacturing a coil module for a linear motor, characterized in that for manufacturing the coil module for the low-speed linear motor by performing a large coil coupling step of coupling one large coil to each of the core teeth of the second core. delete The method of claim 1,
The inner diameter of the small coil corresponds to the outer diameter of the core tooth,
The length of the small coil is 1/n or less of the length of the core tooth,
The method of manufacturing a coil module for a linear motor, characterized in that the n number of small coils coupled to each of the core teeth of the core are stacked in the axial direction of the core teeth. The method of claim 1,
The small coil and the large coil have the same inner diameter,
The length of the small coil is 1/n times or less of the length of the large coil. The method of claim 1,
The small coil and the large coil have the same inner diameter,
The method of manufacturing a coil module for a linear motor, wherein the length of the small coil is 1/n times the length of the large coil. The method of claim 1,
n is a method for manufacturing a coil module for a linear motor, characterized in that 3. The method of claim 1,
The method of manufacturing a coil module for a linear motor, characterized in that k is the same as n. The method of claim 1,
A method of manufacturing a coil module for a linear motor, further comprising a step of connecting multi-stage coils of the core teeth corresponding to the same phase among the core teeth of the core in series with each other. A coil module for a high speed linear motor and a coil module for a low speed linear motor manufactured by the method of any one of claims 1 and 3 to 8. A high-speed linear motor and a low-speed linear motor each comprising a coil module for a high-speed linear motor and a coil module for a low-speed linear motor manufactured by the method of any one of claims 1 and 3 to 8.

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