A modular pinion shaft that includes a tubular member having a first end and a second end, a first pinion gear member secured to the first end by a plurality of fasteners, and a second pinion gear member secured to the first end by a plurality of fasteners. Gear teeth of each of the pinion gear members are aligned by one or more indexing members disposed between the tubular member and each pinion gear member.

A modular pinion shaft that includes a tubular member having a first end and a second end, a first pinion gear member secured to the first end by a plurality of fasteners, and a second pinion gear member secured to the first end by a plurality of fasteners. Gear teeth of each of the pinion gear members are aligned by one or more indexing members disposed between the tubular member and each pinion gear member.

An interface for a surgical system includes an instrument drive unit and a surgical instrument. The instrument drive unit includes a connection hub and at least one drive shaft rotatably supported in the connection hub. The at least one drive shaft extends between a first end and a second end having an oblique end surface. The surgical instrument is releasably connectable to the instrument drive unit and includes a connecting member and at least one driven shaft rotatably supported in the connecting member. The at least one driven shaft extends between a first end and a second end. The second end has an oblique end surface corresponding to the oblique end surface of the at least one drive shaft. The oblique end surfaces are configured such that the connecting member is connectible with the connection hub via a first connection pathway and a second connection pathway.

An interface for a surgical system includes an instrument drive unit and a surgical instrument. The instrument drive unit includes a connection hub and at least one drive shaft rotatably supported in the connection hub. The at least one drive shaft extends between a first end and a second end having an oblique end surface. The surgical instrument is releasably connectable to the instrument drive unit and includes a connecting member and at least one driven shaft rotatably supported in the connecting member. The at least one driven shaft extends between a first end and a second end. The second end has an oblique end surface corresponding to the oblique end surface of the at least one drive shaft. The oblique end surfaces are configured such that the connecting member is connectible with the connection hub via a first connection pathway and a second connection pathway.

A work tool and transmission system thereof. The transmission system comprises: a first shaft (250) and a second shaft (350), a near end (351) of the second shaft having a first mating part; a shaft coupler (600), a far-side part (620) of the shaft coupler having a second mating part matched in shape to the first mating part; and a coupling mechanism capable of directly or indirectly applying a coupling force to at least one of the first shaft, the second shaft and the shaft coupler; when the far-side part of the shaft coupler is aligned with the near end of the second shaft in the circumferential direction, the coupling force forces the first mating part to engage with the second mating part, so that the shaft coupler transmits rotational movement of the first shaft to the second shaft. The work tool comprises: a transmission system; a motive power head transmission-connected to the first shaft (250); and a working head transmission-connected to the second shaft (350).

A torque bar manufactured by an additive manufacturing process is provided. The torque bar may include a torque bar body made of more than one metallic material. The torque bar may also include a geometry that comprises one or more voids and one or more webs, as well as a varied geometry in the direction of a longitudinal axis. The torque bars can exhibit characteristics, such as vibration damping, tuned stiffness, and tuned bending resistance in order to enhance dynamic stability.

Some embodiments of the present disclosure provide a shaft sleeve assembly, a blade mounting structure and an air conditioner. The shaft sleeve assembly is configured to connect a blade shaft and a motor shaft and includes: a blade shaft sleeve a first end of the blade shaft sleeve being configured to be connected with the blade shaft; and a motor shaft sleeve, a first end of the motor shaft sleeve being configured with be connected to the motor shaft and a second end of the motor shaft sleeve being connected with a second end of the blade shaft sleeve and at least one of the blade shaft sleeve and the motor shaft sleeve is an injection molded member.

A mixing system includes a housing having a motor mount rotatably coupled thereto, the motor mount having a passage extending therethrough. A drive shaft is removably positioned within the passage of the motor mount. A cap includes a main body removably coupled to the motor mount and an actuator coupled to the main body so as to be pivotable between a first position and a second position with respect to the main body. The actuator producing a camming action when the actuator is pivoted such that when the actuator is in the first position, the actuator pushes the drive shaft against the motor mount so that the main body is locked to the motor mount and so that rotation of the motor mount causes rotation of the drive shaft and when the actuator is in the second position, the actuator is disengaged from the drive shaft and the cap is removable from the motor mount.

A mixing system includes a housing having a motor mount rotatably coupled thereto, the motor mount having a passage extending therethrough. A drive shaft is removably positioned within the passage of the motor mount. A cap includes a main body removably coupled to the motor mount and an actuator coupled to the main body so as to be pivotable between a first position and a second position with respect to the main body. The actuator producing a camming action when the actuator is pivoted such that when the actuator is in the first position, the actuator pushes the drive shaft against the motor mount so that the main body is locked to the motor mount and so that rotation of the motor mount causes rotation of the drive shaft and when the actuator is in the second position, the actuator is disengaged from the drive shaft and the cap is removable from the motor mount.

The present disclosure relates to a spline connection structure in which a shaft portion having teeth with crowned tooth surfaces formed at equal intervals on an outer circumferential surface and a cylindrical portion having grooves into which the teeth of the shaft portion are fitted formed on an inner circumferential surface are connected, wherein two adjacent tooth surfaces facing each other are bent while maintaining a constant distance therebetween in a tooth width direction when viewed from a diameter direction of the shaft portion.