JP2005348501A - Geared motor series and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To construct a geared motor series which can supply a geared motor at a low cost, capable of coping with various market needs. <P>SOLUTION: In a motor side connection section 18 wherein a motor M having a helical pinion 12 and a gear head G having a helical gear are provided to the motor M, and in a gear head side connection section 20 wherein the motor M and the gear head G are provided to the gear head G, a detachably connected geared motor GM is attained in a series. Three types of motors M1, M2 and M3 are common in the shape of the motor side connection section 18 and in tooth form data of the helical pinion 12. Two types of gear heads G1, G2 are common in the shape of the gear head side connection section 20 and in tooth form data of the helical gear. In the geared motor series 10, connection for power transmission is possible in any combination between the three types of motors M1, M2 and M3 and the two type of gear head G1, G2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a series of geared motors in which a motor and a gear head are detachably coupled and a manufacturing method of the geared motor.

  2. Description of the Related Art Conventionally, a gear head having a motor having a motor shaft provided with a helical pinion near the tip, a helical gear for meshing engagement with the helical pinion, and a speed reducing mechanism for reducing and outputting the rotation input to the helical gear. However, there is known a geared motor that is detachably coupled at a motor side coupling portion provided on the motor and a gear head side coupling portion provided on the gear head (see, for example, Patent Document 1).

  There are several types of geared motors with different normal output capacities so that appropriate output specifications can be selected according to the application. Specifically, for multiple types of motors with different output capacities (maximum power, maximum torque, etc.), the appropriate mechanical strength (gear strength, shaft strength, casing strength, etc.) for each motor output capacity There are several types of gearheads that have a combination of gearheads. The normal gear head is provided with a plurality of reduction ratios for each mechanical strength. By serializing multiple types of geared motors with different output capacities in this way, it is possible to easily select geared motors that have appropriate output capacities according to the application and that are compact and low cost. ing.

  However, even if the required output capacity is equivalent, the life of the geared motor actually varies depending on the application. For this reason, the output capacity is the same, and the helical pinion and gear head provided on the motor shaft have different mechanical strengths. For example, two types of geared motors, the standard type and the reinforced type, are set to meet more diverse needs. Was.

Japanese Patent Laid-Open No. 2003-240105

  However, by setting two types of geared motors such as standard type and reinforced type for each output capacity, the number of parts increases when viewed as a whole geared motor series, resulting in a significant increase in cost. It was.

  In addition, the life of the motor and the life of the gear head may differ depending on the application. Even if two types of geared motors such as the standard type and the reinforced type are set for each output capacity, they are not necessarily in various markets. There were cases where the needs could not be met.

  The present invention has been made in view of the above problems, and it is an object of the present invention to construct a series of geared motors that can provide geared motors that can respond to various market needs while suppressing an increase in the types of components. To do.

  According to the present invention, a motor having a motor shaft integrally formed with a helical pinion and a gear head having a helical gear for meshing engagement with the helical pinion are provided on a motor side coupling portion and the gear head provided on the motor. In a series of geared motors that are detachably coupled at a provided gear head side coupling portion, a plurality of types having different output capacities are prepared as the motors, and at least two types of motors among the plurality of types of motors are prepared. , The coupling of the motor side coupling portion and the tooth profile of the helical pinion are common, and a plurality of types having different mechanical strengths are prepared as the gear head, and at least two types of the plurality of types of gear heads are prepared. For the gear head, the coupling of the gear head side coupling portion and the helicopter The above-mentioned problems can be solved by sharing the tooth profile specifications of the gears and enabling coupling so that power can be transmitted for any combination of the at least two types of motors and the at least two types of gear heads. It is a thing.

  This series of geared motors can be combined with a combination of multiple types of motors with different output capacities and multiple types of gear heads with different mechanical strengths. A geared motor in which a motor and a gear head with various mechanical strengths are combined can be provided. For example, in the application where the required output capacity is P1, when a mechanical strength greater than normal is required for the gear head due to circumstances specific to the application, the motor with the output capacity P1 and the output capacity It is possible to provide a geared motor in which a gear head having a mechanical strength S2 larger than that of a gear head having a mechanical strength S1 that is considered appropriate is combined.

  Therefore, while increasing the number of types of geared motors such as the standard type and the enhanced type for each output capacity, the increase in the number of types of components as a whole geared motor series is suppressed without increasing the types of components. It can meet various market needs at low cost.

  As described above, the present invention is not limited to a gear head having a mechanical strength, which is generally considered appropriate for a motor having a predetermined output capacity, but generally to the output capacity. The geared motor series is configured so that gear heads that are considered to have excessive or low mechanical strength can be combined, and the overall geared motor series can be used to meet the diverse needs of the market while suppressing an increase in the number of parts. In this way, only one type of gear head that can be coupled to each motor is prepared, and its output capacity is completely different from the conventional geared motor series, which has been a common sense to provide a compact geared motor. It was made based on the concept.

  ADVANTAGE OF THE INVENTION According to this invention, the suitable geared motor corresponding to the needs of various markets can be provided, suppressing the increase in the kind of components.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a side view schematically showing the configuration of the geared motor series according to the first embodiment of the present invention. FIG. 2 is a side sectional view showing the structure of the geared motor.

  The geared motor series 10 is provided with a motor M having a motor shaft 14 integrally formed with a helical pinion 12 near the tip and a gear head G having a helical gear 16 for engaging with the helical pinion 12. A geared motor GM that is detachably coupled by a bolt 22 in the motor head coupling portion 18 and the gear head side coupling portion 20 provided in the gear head G is a series of a plurality of types of motors M and a plurality of types of motors. Any combination of the gear head G and the gear head G can be coupled.

  The motor M is provided with three types of motors M1, M2, and M3 having output capacities different from P1, P2, and P3 (P1 <P2 <P3), and these three types of motors M1, M2, and M3 are motors. The coupling of the side coupling portion 18 and the tooth profile specifications of the helical pinion 12 are common. The three types of motors M1, M2, and M3 have the same outer shape.

  The motor M has a cylindrical casing 24 that houses a rotor, a stator, and the like, and a motor side coupling portion 18 is provided at one end of the casing 24 on the gear head G side. As shown in FIG. 3, the motor side coupling portion 18 is a substantially square flange, and through holes 18 </ b> A through which the bolts 22 are inserted are formed at four locations near the corner portion. The common coupling of the motor side coupling portion 18 means that the elements used for coupling to the gear head side coupling portion 20 are common, and in this embodiment, the size and the installation position of the through hole 18A are common. It means that.

  The gear head G is prepared with two types of gear heads G1 and G2 having mechanical strengths different from S1 and S2 (S1 <S2), respectively. The tooth profile specifications of the helical gear 16 are common. The two types of gear heads G1 and G2 have the same outer shape. Note that a plurality of types of gear heads G1 and G2 having different reduction ratios are prepared.

  The gear head G includes a box-shaped casing 26 having a substantially square cross section perpendicular to the axial direction. Incidentally, a part of the casing 26 on the motor M side is opened so that the helical pinion 12 can be inserted, and a part on the opposite side to the motor M is also opened, and the output shaft 28 protrudes. The gear head side coupling portion 20 is provided at the end of the casing 26 on the motor M side, and as shown in FIG. 4, through holes 20A through which the bolts 22 pass are formed at four locations near the corner portion. . The common engagement of the gear head side coupling portion 20 means that the elements used for coupling to the motor side coupling portion 18 are common, and in this embodiment, the size and the installation position of the through hole 20A are common. It means that.

  The bolt 22 is inserted from the motor M side into the through-hole 18A of the motor M and the through-hole 20A of the gear head G, and the threaded portion protrudes from the gear head G, and the nut 23 is screwed into the threaded portion. The gear head G is coupled.

  The speed reduction mechanism of the gear head G is composed of a parallel shaft gear set, and is configured to decelerate the rotation of the helical pinion 12 with 2 to 4 stages of gear set and output from the output shaft 28 according to the speed reduction ratio. ing.

  Next, the operation of the geared motor series 10 will be described.

  The geared motor series 10 includes a helical pinion 12 and a helical gear 16 tooth profile for any combination of three types of motors M1, M2, and M3 having different output capacities and two types of gear heads G1 and G2 having different mechanical strengths. Since the specifications are common and the through hole 18A of the motor side coupling portion 18 and the through hole 20A of the gear head side coupling portion 20 are common, coupling is possible so that power can be transmitted. It is possible to provide a geared motor in which the motors M1, M2, and M3 having the output capacity are coupled to the gear heads G1 and G2 having the desired mechanical strength.

  Normally, a geared motor having a motor with an output capacity suitable for the application may be selected from the region denoted by A in FIG. On the other hand, when a particularly high durability is required for the gear head G due to circumstances specific to the application, a geared motor in a region indicated by a symbol B in FIG. 5 may be selected. For example, even when the output capacity of the motor required for the geared motor GM is P1, if a large mechanical strength S is required for the gear head G due to circumstances specific to a predetermined application, etc., the motor having an output capacity of P1 A geared motor GM (symbol B) in which M1 is coupled to a gear head G2 having a mechanical strength S2 and having a mechanical strength S larger than that of the gear head G1 having a mechanical strength S1 that is normally appropriate for the output capacity P1. Can be selected. On the other hand, when the mechanical strength S required for the gear head G is low due to the specific circumstances of the application, a motor having an output capacity suitable for the application is determined from the combination of the regions denoted by C in FIG. What is necessary is just to select the geared motor with which it is equipped.

  In other words, the geared motor series 10 can meet the needs of various markets without increasing the number of parts as a whole series.

  The geared motor series 10 has the same outer shape for the three types of motors M1, M2, and M3, and the two gear heads G1 and G2 have the same outer shape, so select any combination of geared motors GM. Even in this case, the external shape is the same, and it is easy to design the geared motor GM and the connection with the external mechanism. Also, when the geared motor GM that has already been installed is replaced with another combination of geared motors GM, or when only one of the motor M or the gear head G of the geared motor GM is replaced, the outer shape is the same. The design with the external mechanism is not necessary and the design is easy.

  In the above-described embodiment, the geared motor series 10 has the same shape of the gear head side coupling portion 20 of the two types of gear heads G1 and G2, the tooth shape specifications and the outer shape of the helical gear 16, but further two types of gear heads. For example, bearings, shafts, gears, and the like, which are constituent parts of the G1 and G2 speed reduction mechanisms, may be common. By doing in this way, the casing of the gear heads G1 and G2 and the components inside the gear head other than the speed reduction mechanism can be shared, and the cost of the gear heads G1 and G2 can be reduced. In this case, if the shape of at least a part of the components of the speed reduction mechanism is made common to the two types of gear heads G1 and G2, a certain effect of reducing the cost of the gear head can be obtained.

  In this case, the components of the speed reduction mechanism that have a common shape may be provided with a difference in mechanical strength such that at least one of heat treatment, surface treatment, and processing accuracy is different. For example, gear head gears with intermediate mechanical strength are manufactured by machining steel materials, and gear head gears with higher mechanical strength are further hardened after induction machining of steel materials. The surface treatment such as heat treatment such as carburizing and quenching or shot peening may be performed. In addition, the mechanical strength can be increased by increasing processing accuracy and reducing backlash and surface roughness. On the other hand, gear head gears with low mechanical strength do not require gear cutting and can be produced by zinc die casting, metal powder sintering, resin molding, etc. it can. Further, the cost can be reduced by reducing the processing accuracy.

  In the above embodiment, the outer shapes of the three types of motors M1, M2, and M3 are the same, and the outer shapes of the two types of gear heads G1 and G2 are also the same, but the three types of motors M1, M2, and M3 are the same. If the coupling of the motor side coupling portion 18 and the tooth profile specifications of the helical gear 16 are common, and the coupling of the gear head side coupling portion 20 of the two types of gear heads G1 and G2 and the tooth profile specifications of the helical gear 16 are common, three types One or both of the outer shapes of the motors M1, M2, and M3, or the outer shapes of the two types of gear heads G1 and G2 may be different. In this case as well, coupling is possible so that power can be transmitted for any combination of three types of motors M1, M2, and M3 having different output capacities and two types of gear heads G1 and G2 having different mechanical strengths. Therefore, it is possible to provide a geared motor that meets the various needs of the market while suppressing an increase in the types of components.

  Further, in the above embodiment, the motor side coupling portion 18 is a substantially square flange, the through holes 18A through which the bolts 22 are inserted are formed at four locations in the vicinity of the corner portion, and the gear head side coupling portion 20 is also substantially square. The through holes 20A through which 22 are inserted are formed at four locations in the vicinity of the corner, but the shape of the motor side coupling portion and the gear head side coupling portion is not particularly limited as long as the motor M and the gear head G can be detachably coupled. . For example, the motor side coupling portion is a substantially circular flange, and a plurality of through holes through which bolts are inserted are formed at an appropriate pitch in the circumferential direction, and the gear head side coupling portion is also substantially circular and has a plurality of through holes through which the bolts are inserted. It is good also as a structure by which the hole was formed in the circumferential direction appropriate pitch.

  In the above embodiment, the geared motor series 10 can be combined for all combinations of three types of motors M having different output capacities and two types of gear heads G having different mechanical strengths. Even in the case where coupling is possible so that power can be transmitted only for the combination of two types of motors M and two types of gear heads G among the three types of motors M, there are various market needs. And a certain effect of suppressing an increase in the types of parts can be obtained.

  In the above embodiment, the geared motor series 10 includes three types of motors M and two types of gear heads G. The geared motor series includes only two types of motors M having different output capacities. The present invention can also be applied to a series of geared motors in which four or more types of motors M having different output capacities are prepared. The present invention is also applicable to a series of geared motors in which three or more types of gear heads G having different mechanical strengths are prepared.

  The present invention can be used in various fields such as industrial machines, production facilities, and transportation equipment.

The side view which shows typically the structure of the series of the geared motor which concerns on embodiment of this invention Side sectional view showing the structure of the same geared motor Front view showing the structure of the motor side coupling part of the same geared motor Front view showing structure of gear head side coupling portion of same geared motor Table showing combinations of motors of the same geared motor series and gear heads

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Series of geared motor 12 ... Helical pinion 14 ... Motor shaft 16 ... Helical gear 18 ... Motor side coupling part 20 ... Gear head side coupling part G, G1, G2 ... Gear head GM ... Geared motor M, M1, M2, M3 ... Motor P, P1 , P2, P3: Output capacity S, S1, S2: Mechanical strength

Claims (5)

A motor having a motor shaft integrally formed with a helical pinion and a gear head having a helical gear for engaging with the helical pinion are provided on a motor side coupling portion provided on the motor and a gear head side provided on the gear head. In the series of geared motors that are detachably coupled at the coupling part,
A plurality of types of motors with different output capacities are prepared, and at least two of the plurality of types of motors have a common joint on the motor side coupling portion and tooth profile specifications of the helical pinion. Yes,
A plurality of types of gear heads having different mechanical strengths are prepared, and at least two types of gear heads among the plurality of types of gear heads have a common joint of the gear head side coupling portion and tooth profile specifications of the helical gear. Yes,
A series of geared motors that can be coupled so that power can be transmitted for any combination of the at least two types of motors and the at least two types of gear heads. In claim 1,
The at least two types of motors have a common outer shape,
A series of geared motors characterized in that the at least two types of gear heads have the same outer shape. In claim 1 or 2,
A series of geared motors characterized in that at least two types of gear heads among the plurality of types of gear heads have a common shape of at least some of the components of the speed reduction mechanism. In claim 3,
The geared motor series, wherein the components of the speed reduction mechanism having the same shape are different in mechanical strength due to at least one of heat treatment, surface treatment, and machining accuracy. A motor having a motor shaft integrally formed with a helical pinion, and a gear head having a helical gear for engaging with the helical pinion, a motor side coupling portion provided in the motor and a gear head side provided in the gear head In a geared motor manufacturing method for manufacturing a geared motor by coupling at a coupling portion,
As the motor, a plurality of types of motors including at least two types of motors having different output capacities and having the same tooth profile data of the helical pinion and the coupling of the motor side coupling part are prepared.
As the gear head, a plurality of types of gear heads including at least two types of gear heads having different mechanical strengths and having the same gear head side coupling portion and the helical gear tooth profile specifications are prepared,
Constituting a series of geared motors that can be coupled so that power can be transmitted for any combination of the at least two types of motors and the at least two types of gear heads;
A desired geared motor is manufactured by selecting and combining one motor and one gear head from the geared motor series.

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