公开(公告)号：US20200099280A1

公开(公告)日：2020-03-26

申请号：US16141281

申请日：2018-09-25

Applicant: GM Global Technology Operations LLC

Inventor： John S. Agapiou ,  Thomas A. Perry

IPC: H02K15/09 ,  H02K15/00 ,  H02K3/04 ,  H02K15/02 ,  H02K17/28

Abstract: A method for manufacturing an induction rotor includes placing a lamination stack into a fixture in which the first end of the lamination stack is rotated in an opposite rotational direction from the second end of the lamination stack to skew the conduction bars to an angle α. Vertical members are fixed to an outer perimeter of each of the plurality of laminates of the lamination stack. Hoop members are fixed to each of the plurality of vertical members and an outer edge of each of the plurality of conduction bars. A conduction ring is fixed on each of the ends of the lamination stack. An outer perimeter of the lamination stack is machined to remove the plurality of vertical members and the plurality of hoop members from the lamination stack.

公开(公告)号：US10164508B2

公开(公告)日：2018-12-25

申请号：US15439009

申请日：2017-02-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： John S. Agapiou ,  Michael D. Hanna

IPC: H02K17/16 ,  H02K15/00

Abstract: A lamination pack for a motor and method of forming the lamination pack is provided. The method includes inserting a plurality of conductor bars into a plurality of rotor slots defined by a lamination stack such that opposing bar ends of the conductor bars extend from opposing end faces of the lamination stack, skewing the lamination stack and the conductor bars to a skew angle relative to a rotation axis of the lamination stack, and subsequently bending the bar ends of the conductor bars in opposing radial directions to a locking angle greater than the skew angle, to lock each of the conductor bars in its respective rotor slot. The bent bar ends exert a compressive axial locking force on the lamination stack to prevent axial and radial movement of the laminations in the lamination stack and to prevent axial movement of the conductor bars relative to the lamination stack.

公开(公告)号：US20180248439A1

公开(公告)日：2018-08-30

申请号：US15442745

申请日：2017-02-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Arthur L. McGrew, JR. ,  Huaxin Li ,  John S. Agapiou

IPC: H02K5/04 ,  H02K7/116

Abstract: An electric motor includes a stator assembly and a rotor configured to rotate within the stator assembly about an axis. The stator assembly includes a stator case having a channel and a laminate steel core having a retention feature aligned with the channel of the stator case. The stator case is fixed to the laminate steel core via displacement of material of the stator case at the channel toward the laminate steel core to capture the retention feature. An electro-mechanical drive-unit employing the above-described electric motor and a method of generating a stator assembly for such an electric motor are also contemplated.

公开(公告)号：US10038359B2

公开(公告)日：2018-07-31

申请号：US15902618

申请日：2018-02-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael D. Hanna ,  John S. Agapiou

IPC: B22D17/00 ,  H02K17/16 ,  H02K15/00 ,  B22D19/00

CPC classification number: H02K17/165 ,  B22D17/00 ,  B22D19/0054 ,  H02K15/0012

Abstract: A rotor casting includes a lamination stack and a cast structure including proximal and distal cast end rings respectively adjacent proximal and distal end faces of the lamination stack. Cast axial ribs are distributed radially on a peripheral surface of the lamination stack and extend between the proximal and distal cast end rings. Cast feed members extend axially from the proximal cast end ring and are respectively positioned radially between an adjacent pair of axial ribs. In one example, cast bar segments integral to the proximal and distal cast end rings are formed in axial slots of the lamination stack. In one example, a bar insert in each axial slot has insert ends that extend respectively from the proximal and distal end faces of the lamination stack and are fully encapsulated respectively in the proximal and distal cast end rings. A method of forming the rotor casting is provided.

公开(公告)号：US09079312B2

公开(公告)日：2015-07-14

申请号：US13875532

申请日：2013-05-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Christopher B. Preston ,  Christine A. Blake ,  Sunil Nandwani ,  John S. Agapiou

IPC: B25J15/00

CPC classification number: B25J15/0009 ,  B25J15/009

Abstract: A part transfer system includes a robotic arm, and an end effector attached to the robotic arm. The end effector includes a locating pin that is operable to engage an existing part feature of a part. The presence of the existing part feature is required for the intended use of the part, and therefore serves a function of the part other than a transfer function. The existing part feature defines a circular aperture disposed on a feature plane. The locating pin includes an engagement portion that extends along a longitudinal axis of the at least one locating pin. The engagement portion includes a diameter that is tapered along the longitudinal axis such that the engagement portion of the locating pin engages a radial inner edge of the circular aperture on the feature plane along an approximately annular contact ring disposed about a circumference of the tapered portion.

Abstract translation: 部件传送系统包括机器人臂和附接到机器人臂的末端执行器。 端部执行器包括可操作以接合部件的现有部件特征的定位销。 现有部件特征的存在对于部件的预期使用是必需的，因此用于传递函数以外的部分的功能。 现有的部件特征限定了设置在特征平面上的圆形孔。 定位销包括沿着至少一个定位销的纵向轴线延伸的接合部分。 接合部分包括沿着纵向轴线渐缩的直径，使得定位销的接合部分沿着围绕锥形部分的圆周设置的大致环形的接触环与特征平面上的圆形孔的径向内边缘接合。

公开(公告)号：US20150073733A1

公开(公告)日：2015-03-12

申请号：US14024185

申请日：2013-09-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： John S. Agapiou ,  Thomas A. Perry ,  Jon Matthew Radlick

IPC: G01R31/00

CPC classification number: G01R31/003 ,  G01R31/1227 ,  G01R31/343

Abstract: An electrical part testing system for evaluating quality of an insulated electrical part, including a computer-controlled switching apparatus for providing an original voltage to the electrical part automatically according to a pre-established testing scheme calling for provision of voltage to each phase of the part, in turn, while grounding the other phases of the part. A high-frequency filter for receiving receive the original voltage, receiving a load voltage emanating from the electrical part in response to the part receiving the original voltage, and filtering the original voltage from the load voltage to isolate any partial-discharge voltage added to the original voltage by the electrical part while the part is being electrified by the original voltage, yielding a filtered signal. A computing device determines, based on a comparison of a peak amplitude of the partial-discharge inception voltage to a voltage threshold, the quality of the electrical part being tested.

Abstract translation: 一种用于评估绝缘电气部件的质量的电气部件测试系统，包括用于根据预先建立的测试方案自动向电气部件提供原始电压的计算机控制的开关装置，其要求向部件的每个相位提供电压 反过来，同时接地零件的其他阶段。 用于接收的高频滤波器接收原始电压，响应于接收原始电压的部分接收从电气部分发出的负载电压，并且从负载电压对原来的电压进行滤波，以将添加到 原始电压通过电气部分，同时部分由原始电压通电，产生滤波信号。 计算装置基于部分放电起始电压的峰值振幅与电压阈值的比较来确定正在测试的电气部件的质量。