JP4444894B2 - GEARED MOTOR SERIES AND GEARED MOTOR MANUFACTURING METHOD - Google Patents

Description

The present invention relates to a process for producing a series and geared motors formic Yadomota.

  Conventionally, a geared motor as described in Patent Document 1 is known. A geared motor is an integrated motor and power transmission device, and is used to drive various industrial machines by decelerating (or increasing) the rotation of a motor serving as a power source.

  In addition, there are two types of geared motors: a parallel type in which the positional relationship between the input shaft and the output shaft is parallel (including concentricity) and an orthogonal type in which the input shaft and the output shaft are orthogonal.

  Also, both types are prepared in series as geared motors with different mechanical strength of the power transmission device, motor capacity, etc. for each reduction ratio.

JP 2003-269552 A

  When preparing geared motors as a series, there is a demand to reduce costs by sharing parts as much as possible in those series. For example, a motor with a helical pinion cut directly can be procured inexpensively and easily because the quantity is very large. Therefore, this motor is used as a common power source. It is possible to do. In such a case, the thing of the said patent document 1 has taken the structure which receives once by the helical gear parallel to an input shaft, and makes it orthogonal after that. Therefore, a compact design is difficult for this configuration as much as received by the helical gear. Furthermore, since the rotation of the motor shaft is decelerated by the first-stage parallel shaft gear meshing with the helical pinion and is orthogonalized at the second and subsequent stages where the torque is increased, the cost is originally lower than that of the parallel-shaft gear. However, it is also necessary to manufacture such an orthogonal shaft gear with increased strength to withstand the increased torque. As a result, the gear size is large and the cost is high.

  On the other hand, as for the pinion provided on the motor shaft, it is possible to prepare a dedicated one for the orthogonal type like a hypoid pinion (see Fig. 5) and a dedicated one for a parallel type like a helical pinion. This means that the number of types of motors to be prepared is doubled, and the purpose of sharing parts and reducing costs cannot be achieved.

  In view of the above circumstances, an object of the present invention is to provide a compact orthogonal geared motor and its series by effectively using a motor in which a helical pinion is integrally formed.

The present invention is a series of geared motors including a motor having a motor shaft integrally formed with a helical pinion and a power transmission device having a gear that meshes directly with the helical pinion, wherein the gear is a face gear. Or an orthogonal type power transmission device having an output shaft orthogonal to the motor shaft, or a parallel type power transmission device in which the gear is configured as a helical gear and having an output shaft parallel to the motor shaft. bind to configure so as to be able to transmit power, it is obtained by solving the above Symbol challenges.

  Accordingly, a series of orthogonal geared motors or parallel geared motors can be configured using a motor in which a common helical pinion is directly cut.

The present invention also provides a step of preparing a motor having a motor shaft integrally formed with a helical pinion, a face gear directly meshing with the helical pinion, and an orthogonal power transmission device having an output shaft orthogonal to the motor shaft. Or manufacturing a geared motor through a step of selecting one power transmission device from a helical gear directly meshing with the helical pinion and a parallel type power transmission device having an output shaft parallel to the motor shaft. Similarly, the above-mentioned problems are solved.

  Thereby, the orthogonal geared motor and the parallel geared motor can be collectively provided as a series using a motor in which a common helical pinion is directly cut.

  According to the present invention, an orthogonal geared motor can be made compact by effectively using a motor in which a helical pinion is directly cut.

  Further, since it is possible to use a common motor for the orthogonal type geared motor and the parallel type geared motor, the number of necessary parts can be reduced and the cost can be reduced.

  Hereinafter, an example of an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a side view of an orthogonal geared motor according to the present invention, and FIG. 2 is a partially developed sectional view of the orthogonal geared motor according to the present invention.

  The geared motor GM100 includes a motor 110 serving as a power source and a power transmission device 120 that decelerates and outputs the rotation of the motor. In the present embodiment, the power transmission device 120 is described as a speed reducer, but is not necessarily limited thereto, and may be a speed increaser.

  The power transmission device 120 is configured by arranging various gears and the like in an orthogonal gear casing 170 and a cover 172 (details will be described later). The motor 110 has a motor casing 110 </ b> A that is separable from the orthogonal gear casing 170 of the power transmission device 120. The power transmission device 120 is connected to the motor 110 by coupling the orthogonal gear casing 170 and the motor casing 110A via bolts (not shown).

  A helical pinion 114 is directly cut and formed on the motor shaft 112 of the motor 110. The helical pinion 114 meshes with teeth 124 formed on the face gear 122. The first reduction shaft 126 that rotates integrally with the face gear 122 is rotatably supported by the orthogonal gear casing 170 and the cover 172 by a bearing 152 and a bearing 154. A pinion 128 is formed at a substantially central portion of the first reduction shaft 126. The pinion 128 meshes with a gear 130 that rotates integrally with the second reduction shaft 134. The second reduction shaft 134 is rotatably supported by the orthogonal gear casing 170 and the cover 172 by a bearing 156 and a bearing 158. Further, a pinion 132 is formed on the second reduction shaft 134. The pinion 132 meshes with a gear 136 that rotates integrally with the output shaft 140. The output shaft 140 is rotatably supported by the orthogonal gear casing 170 and the cover 172 by a bearing 160 and a bearing 162.

  Reference numerals 180 and 182 denote oil seals.

  The orthogonal gear casing 170 and the cover 172 are connected by a bolt 174.

  Next, the operation of the geared motor GM100 will be described.

  When the motor 110 is energized, the motor shaft 112 starts to rotate. This rotation is transmitted to the face gear 122 via the helical pinion 114, and the output shaft 140 is sequentially rotated through the pinion 128, the gear 130, the pinion 132, and the gear 136. At this time, as the power is transmitted to the first deceleration shaft 126 and the second deceleration shaft 134 and further to the output shaft 140, the rotation of the motor shaft 112 is sequentially decelerated (the torque is increased simultaneously) and transmitted. . The rotation of the motor shaft 112 is directly changed to the orthogonal direction by the face gear 122. By skillfully using the face gear 122, the shape of the pinion provided on the motor shaft 112 is dedicated to the orthogonal type. The helical pinion 114 can be used as it is.

  With this configuration, the power transmission device itself can be designed compactly because it is not necessary to convert the rotation of the motor shaft with a parallel shaft gear that is parallel to the motor shaft and then convert it to the orthogonal direction. Furthermore, since it is not necessary to convert to the orthogonal direction at the stage after deceleration where the torque has increased, there is no need to use costly components.

  Next, a geared motor including a parallel type power transmission device will be described with reference to FIGS. 3 and 4.

  FIG. 3 is a front view of the parallel geared motor, and FIG. 4 is a partially developed cross-sectional view of the parallel geared motor GM200 in FIG. In addition, about the part which is the same as that of geared motor GM100 already demonstrated or similar, it adds only the code | symbol same as the last 2 digits, and duplication description is abbreviate | omitted about a structure and an effect | action.

  The geared motor GM200 includes a power transmission device 220 and a motor 210. Here, the motor 210 and the motor 110 in the geared motor GM100 described above are completely the same motor. The power transmission device 220 is configured by arranging various gears and the like in a parallel gear casing 270 and a cover 272. The motor 210 has a motor casing 210 </ b> A that is separable from the parallel gear casing 270 of the power transmission device 220. The power transmission device 220 is connected to the motor 110 by connecting the parallel gear casing 270 and the motor casing 210A via bolts (not shown).

  In the geared motor GM200, the rotation of the motor shaft 212 is sequentially decelerated by four-stage deceleration and transmitted to the output shaft 240. The power transmission device 220 provided in the geared motor GM200 is a parallel type power transmission device, and the motor shaft 212 and the output shaft 240 are parallel to each other. A helical pinion 214 provided on the motor shaft 212 meshes with a gear 223 that is a parallel shaft gear parallel to the motor shaft 212. As described above, in the geared motor GM200, the rotation of the motor shaft 212 is transmitted without using the face gear, so that the rotation is transmitted to the output shaft 240 while being kept in parallel without being converted into the orthogonal direction.

  In both the above-described geared motor GM100 and the geared motor GM200, a motor shaft provided with a helical pinion can be used. Furthermore, in the above-described geared motor GM100 and the geared motor GM200, the same motor (110, 210) can be used in different embodiments.

  Also, it can be configured as an orthogonal geared motor or a parallel geared motor depending on whether the gear directly meshed with the helical pinion formed on the motor shaft is a face gear or a normal parallel gear (helical gear). Therefore, it is possible to greatly share the second and subsequent members as well as the output shaft. That is, a gear that meshes with a helical pinion is configured as a face gear, and a power transmission device with various reduction ratios (using an orthogonal gear casing of the same size) having an output shaft orthogonal to the motor shaft on which the helical pinion is formed. By combining with any one of the power transmission devices), it is possible to construct orthogonal geared motors with various reduction ratios. Also, the gear that meshes with the helical pinion is configured as a helical gear, and a power transmission device with various reduction ratios (using a parallel gear casing of the same size) has an output shaft parallel to the motor shaft on which the helical pinion is formed. By combining with any one of the power transmission devices), parallel type geared motors with various reduction ratios can be configured. Of course, although it is necessary to series the motors according to the capacity of the motor, it is not necessary to prepare motors of the same capacity for the orthogonal type and the parallel type.

  Furthermore, by replacing the orthogonal gears (for example, hypoid gears) of the orthogonal reduction gears (for example, hypoid reducers) already available as products with face gears as in this embodiment, the current products can be used almost as they are. It becomes.

  In the description with reference to the drawings, the geared motor is configured with a three-stage deceleration and a four-stage deceleration. However, the number of deceleration (or acceleration) stages is not limited to this, and for example, a one-stage deceleration application. It can be appropriately changed depending on the situation.

  Further, “perpendicular” does not necessarily require that the extension lines of the shaft centers of the shafts (for example, the motor shaft and the output shaft) directly intersect. That is, it is a concept that includes a virtual plane along the axis of the motor shaft and a virtual plane along the axis of the output shaft orthogonal to each other.

  The present invention can be widely applied as a geared motor to a reduction gear and a speed increase gear.

Side view of orthogonal geared motor according to the present invention Partially developed sectional view of an orthogonal geared motor according to the present invention Front view of parallel geared motor Partially developed sectional view of the geared motor in FIG. In order to make an orthogonal type geared motor, an example in which the pinion directly cut on the motor shaft is shaped exclusively for the orthogonal type

Explanation of symbols

GM100 ... Geared motor 110 ... Motor 112 ... Motor (input shaft)
114 ... Helical pinion 120 ... Power transmission device 122 ... Face gear 126 ... First reduction shaft 134 ... Second reduction shaft 140 ... Output shaft 152, 154, 156, 158, 160, 162 ... Bearing 170 ... Casing 172 ... Cover 180, 182 ... Oil seal

Claims (6)

A motor having a motor shaft integrally formed with a helical pinion;
A series of geared motors including a power transmission device having a gear that directly meshes with the helical pinion,
The motor is
The gear is configured as a face gear, an orthogonal type power transmission device having an output shaft orthogonal to the motor shaft, or
The geared motor series, wherein the gear is configured as a helical gear, and can be coupled to any one of a parallel type power transmission device having an output shaft parallel to the motor shaft. In claim 1,
The output shaft of the orthogonal power transmission device and the output shaft of the parallel power transmission device are common.
This is a series of geared motors. In claim 1 or 2 ,
The orthogonal type power transmission apparatus comprising the products which the reduction ratio varies in orthogonal gear casing of the same size, the said flat row type power transmission device constitute a product group ratio reduction parallel gear casing of the same size are different And
The motor is capable of transmitting power by being coupled to one power transmission device selected from a product group of orthogonal power transmission devices or a product group of parallel power transmission devices. A series of geared motors. Preparing a motor having a motor shaft integrally formed with a helical pinion;
An orthogonal type power transmission device having a face gear directly meshing with the helical pinion and an output shaft perpendicular to the motor shaft, or a parallel type having a helical gear directly meshing with the helical pinion and an output shaft parallel to the motor shaft Selecting one power transmission device from any one of the power transmission devices. In claim 4,
The orthogonal type power transmission apparatus comprising the products which the reduction ratio varies in orthogonal gear casing of the same size, the said flat row type power transmission device constitute a product group ratio reduction parallel gear casing of the same size are different And
Selecting one power transmission device from either the product group of the orthogonal power transmission device or the product group of the parallel power transmission device. In claim 4 or 5,
The method further includes the step of coupling the motor and the selected power transmission device.

Images