Rotary mechanical screw transmission

    公开(公告)号:US12129015B2

    公开(公告)日:2024-10-29

    申请号:US17765561

    申请日:2020-08-27

    申请人: UMBRAGROUP S.P.A.

    IPC分类号: F16H25/22 B64C13/34 F16H25/20

    摘要: A rotary mechanical transmission, includes: a containment structure, a first rotary element, connected to a drive unit to define a mechanical power input unit and rotatable about an axis. The transmission also includes a fixed guide and a second rotary element, rotatable about said axis and defining a power output unit. A connecting element extends along the axis and couples to the first rotary element by a first threaded connection. The connecting element is also coupled with one of either the fixed guide and the second rotary element by a second threaded connection, and with the other of the fixed guide and the second rotary element by a linear guide parallel to the axis. The first threaded connection and second threaded connection have different pitches in such a way as to vary the angular speed between the connecting element and the first rotary element.

    Linear motion device
    3.
    发明授权

    公开(公告)号:US12117069B2

    公开(公告)日:2024-10-15

    申请号:US18021327

    申请日:2021-08-16

    申请人: FANUC CORPORATION

    IPC分类号: F16H25/22 F16H25/20

    摘要: A linear motion device includes: a bearing mounted to the outer periphery of a ball screw; a nut holder through which the ball screw passes; and a bearing pressing member which is fixed to a motor housing with the ball screw inserted in a through hole and which restricts the movement of the bearing in the motor housing in the axial direction. The bearing pressing member has a cutout portion extending from the inner peripheral surface of the through hole over to the outer peripheral surface of the bearing pressing member in the radial direction.

    Linear motion apparatus and robot

    公开(公告)号:US12110949B2

    公开(公告)日:2024-10-08

    申请号:US18255892

    申请日:2021-12-21

    申请人: FANUC CORPORATION

    发明人: Toshikatsu Kuroki

    摘要: A linear motion apparatus has a linear motion mechanism having a long shaft member and a connecting member attached to the shaft member, wherein at least one of the shaft member and the connecting member moves in a longitudinal direction of the shaft member; and an antirust member attached to the linear motion mechanism, wherein the antirust member contains an antirust material having a higher ionization tendency than a material for the linear motion mechanism and is electrically connected to the linear motion mechanism.

    VARIABLE GEAR RATIO TRANSFER GEAR SET FOR ACTUATION SYSTEM

    公开(公告)号:US20240328482A1

    公开(公告)日:2024-10-03

    申请号:US18321300

    申请日:2023-05-22

    IPC分类号: F16H3/00 F16D41/066 F16H25/20

    摘要: A variable gear ratio gear set system includes a planetary gear set including a sun gear locate at a central axis of rotation, a plurality of planet gears meshed with the sun gear and retained at a carrier, and a ring gear surrounding the plurality of planet gears and meshed therewith. An input shaft inputs rotational energy to the planetary gear set at a first rotational speed, and an output shaft outputs rotational energy from the planetary gear set at a second rotational speed. A plurality of one-way clutches are positioned in the gear set and are engageable such that the system has a first gear ratio when the input shaft is rotated in a first direction, and a second gear ratio when the input shaft is rotated in a second direction.

    Modular robotic structure
    8.
    发明授权

    公开(公告)号:US12076858B2

    公开(公告)日:2024-09-03

    申请号:US18158557

    申请日:2023-01-24

    摘要: A motorized module for a modular robotic structure comprises a housing, a first wheel, a second wheel, an elongated structure mounted to the first and second wheels and configured to rotate the first and second wheels. A driver is mounted to the housing between the first and second wheels. A leadscrew is mounted to the housing between the first and second wheels. A transmission drivingly connecting the driver to the leadscrew. A connector is coupled to the leadscrew and configured to move longitudinally along the second longitudinal axis in response to a rotation of the leadscrew, the connector being attached to the elongated structure.