摘要:
A silk hat type flexible external gear (13) of a flexible mesh engagement gear device (11) comprises a barrel portion (22), a diaphragm portion (23) and a boss portion (25). A thin portion (221) whose thickness is 80 % of the thickness of a main body portion of the barrel portion (22) is formed between the main body portion and a curved portion (222). The thickness of the diaphragm portion (23) is set such that it is the maximum at its internal circumferential end portion (point A), the minimum at its central portion (point B) and a slightly thinner than the maximum thickness at an external circumferential end portion (point C). The contour of the diaphragm is determined by using a group of curves (223, 224) such that the change in thickness is smooth as a whole. It is possible to ease the concentration of stress at the internal and external circumferential end portions so as to realize a gentle stress distribution by disposing the thin portion (221) in a way as described above and determining the thickness of the diaphragm portion (23) also in a way as described above. Consequently, it is possible to realize a silk hat type flexible mesh engagement gear device having a shorter axial length and a smaller outside diameter.
摘要:
Herein disclosed is a transmission gear for transmitting two rotary motions from a driving mechanism to a working mechanism. The transmission gear comprises a cylindrical support member (11), a flexible cylindrical member (12) fixedly supported by the cylindrical support member (11), first and second input shaft members (13 and 14), and first and second output shaft members (15 and 16). The first and second input shaft members (13 and 14) have non-circular peripheral portions (13a and 14a), respectively. The first and second output shaft members (15 and 16) have internal circular portions (15a and 16a) radially opposite to and spaced apart from the non-circular peripheral portions (13a and 14a) of the first and second input shaft members (13 and 14), respectively. The flexible cylindrical member (12) interposes between the non-circular peripheral portions (13a and 14a) ofthe first and second input shaft members (13 and 14) and the internal circular portions (15a and 16a) of the first and second output shaft members (15 and 16). The flexible cylindrical member (12) further having a buffer portion (12e) between the first and second transformable intervening portions (21 and 22) for allowing the first and second transformable intervening portions (21 and 22) to transform independently of each other without interference, thereby transmitting the rotary motions from the first and second input shaft members (13 and 14) to the first and second output shaft members (15 and 16), respectively, in independent relationship to each other.
摘要:
The device includes a rigid disk (1) provided with a pla- nartooghed ring portion (1a), which is meshed with a sector of a toothed ring portion (5a) of a flexible disk (23) angularly secured to the driven shaft (5b). The pitch of the ring portion (5a) is slightly different from the one of the ring portion (1a). The driving shaft (3) is coaxial with the shaft (5b) and is angularly secured to another disk (2) parallel to the rigid disk (1) and carrying a roller (4) which causes sequentially a sector of the toothed wing portion (5a) to yield parallely to the axis of the two shafts (3) and (5b).
摘要:
The application discloses a harmonic pin drive which comprises at least one outer ring gear with inner teeth that are adapted to the shape of pins of a pin ring, a transmitter for connecting to a rotor of an electric motor, a ball bearing that is supported on the transmitter and an arrangement of flexible means. The flexible means are distributed essentially on the circumference of a radius and the flexible means are provided for attachment to a casing. Furthermore, the flexible means comprise openings for inserting pins of the pin ring. Furthermore, an output shaft is provided for receiving a rotation of the outer ring gear.
摘要:
Exemplary embodiments of the invention are directed to drive mechanisms that may be used in, for example, power transmission and/or speed reduction applications. Exemplary embodiments of the invention may include a housing within which is located a wheel. A portion of a wave generator and a portion of an output element also reside within the chamber and are in communication with the wheel. Rotation of the wave generator causes a rotation of the wheel in a slipping manner and, thus, with a reduced rotational speed. Rotation of the wheel causes a rotation of the output element.
摘要:
A robot (100) includes a base (111), a first arm (121) that is provided to be rotatable with respect to the base, and a gear device (1) that transmits a driving force from the base (111) to the first arm (121). The gear device (1) has a flexible gear (3). The flexible gear (3) has a cylindrical body portion (31) and a bottom portion (32) that is connected to one end portion of the body portion. The bottom portion (32) has a metal flow (ff) radially extending from a center side to an outer peripheral side of the bottom portion (32).
摘要:
An externally toothed gear of a dual-type strain wave gearing is provided with first and second external teeth (7, 8) having different teeth numbers, and is flexed into an ellipsoidal shape by a wave generator. When t(1) represents the tooth bottom rim wall thickness of the first external teeth (7), and t(2) represents the tooth bottom rim wall thickness of the second external teeth (8), the ratio of t(1)/t(2) is set to a value satisfying 0.5>t(1)/t(2)
摘要:
Exemplary embodiments of the invention are directed to drive mechanisms that may be used in, for example, power transmission and/or speed reduction applications. Exemplary embodiments of the invention may include a housing within which is located a wheel. A portion of a wave generator and a portion of an output element also reside within the chamber and are in communication with the wheel. Rotation of the wave generator causes a rotation of the wheel in a slipping manner and, thus, with a reduced rotational speed. Rotation of the wheel causes a rotation of the output element.
摘要:
Provided is a strain wave gearing apparatus which is able to make the most of the structural advantages of the flat form while achieving ideal mesh-engagement without involving a high degree of dimensional precision or any special adjustment mechanism. A strain wave gearing apparatus 1 is provided with a stationary internal gear 3, a rotary internal gear 11 disposed side by side with the stationary internal gear, a flexible planetary gear 19 disposed on the inner peripheral side thereof for meshing partially with the internal gears by being deflected in the radial direction, and a wave generator 27 disposed inside the flexible planetary gear for continuously deforming and deflecting the flexible planetary gear by rotation. In the apparatus, backlash during mesh-engagement is eliminated by making the base portions 5 and 13 of the internal gears 3 and 11 elastic.