公开(公告)号：US20170297134A1

公开(公告)日：2017-10-19

申请号：US15491484

申请日：2017-04-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： David R. Sigler ,  Thomas A. Perry ,  James G. Schroth

IPC: B23K11/11 ,  B23K11/20 ,  B23K11/34 ,  B23K35/00

CPC classification number: B23K11/115 ,  B23K11/20 ,  B23K11/34 ,  B23K35/002 ,  B23K2103/20

Abstract: A method of resistance spot welding a workpiece stack-up that that includes an aluminum workpiece and an adjacent overlapping steel workpiece involves assembling the workpiece stack-up so that an intermediate metallurgical additive is positioned between the faying surfaces of the aluminum and steel workpieces. The intermediate metallurgical additive includes at least one of carbon, silicon, nickel, manganese, chromium, cobalt, or copper, and has the capability to counteract the growth and formation of Fe—Al intermetallic compounds within a molten metal weld pool created within the aluminum workpiece during resistance spot welding of the workpiece stack-up. In certain aspects of the disclosed method, the intermediate metallurgical additive may be one or more metallurgical additive deposits that are deposited onto the faying surface of the aluminum workpiece or the faying surface of the steel workpiece by an oscillating wire arc welding process.

公开(公告)号：US09547049B2

公开(公告)日：2017-01-17

申请号：US14258736

申请日：2014-04-22

Applicant: GM Global Technology Operations LLC

Inventor： David T. Stark ,  Daniel J. Smith ,  Thomas A. Perry ,  Joshua Charles Sautner

IPC: G01R33/00 ,  F16D25/10 ,  F16D25/12 ,  F16D21/06 ,  G01D5/14 ,  G01D5/244

CPC classification number: G01R33/0076 ,  F16D21/06 ,  F16D2300/18 ,  G01D5/145 ,  G01D5/24433 ,  G01R33/0047

Abstract: A linear magnetic sensor shield system comprises first and second shield parts. The system may include first and second field sensor assemblies, each having field sensors disposed therein. The first shield part may be disposed adjacent to a first side and a third side of the first field sensor assembly, and the second shield part may be disposed adjacent to a second side of the second field sensor assembly. The shield parts may be formed of mu metal, by of example, or they may have a curved shape or a thickness in the range of about 0.015 inch to about 0.030 inch. A torque transmitting device is also provided.

Abstract translation: 线性磁传感器屏蔽系统包括第一和第二屏蔽部分。 该系统可以包括第一和第二场传感器组件，每个具有设置在其中的场传感器。 第一屏蔽部分可以布置成与第一场传感器组件的第一侧和第三侧相邻，并且第二屏蔽部分可以被布置为与第二场传感器组件的第二侧相邻。 屏蔽部分可以由mu金属形成，例如，它们可以具有约0.015英寸至约0.030英寸范围内的弯曲形状或厚度。 还提供了扭矩传递装置。

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。

公开(公告)号：US20140368233A1

公开(公告)日：2014-12-18

申请号：US13916483

申请日：2013-06-12

Applicant: GM Global Technology Operations LLC

Inventor： Thomas A. Perry ,  John D. Campbell

IPC: G01R31/34

CPC classification number: G01R31/34 ,  G01R31/346 ,  H02K15/00

Abstract: A continuity tester that has particular application for inspecting the insulation on the stator windings in an electric machine. The continuity tester includes a power supply, a brush having conductive bristles, and an analog-to-digital (A/D) converter. One terminal of the power supply is electrically coupled to the brush and another terminal of the power supply is electrically coupled to the A/D converter and the stator being tested. The conductive brush is selectively positioned against the exposed windings of the stator, and if an electrical circuit is formed as a result of loss of insulation, the potential at the input of the A/D converter drops, which can be detected. In one embodiment, the conductive brush is a manual brush that is moved across the stator windings, and in alternate embodiments the conductive brush is specially configured to be positioned against the conductive windings in an automated process.

Abstract translation: 一种连续性测试仪，具有特殊应用，用于检查电机中定子绕组上的绝缘。 连续性测试器包括电源，具有导电刷毛的刷子和模拟（A / D）转换器。 电源的一个端子电耦合到电刷，并且电源的另一个端子电耦合到A / D转换器和被测试的定子。 导电刷被选择性地定位成抵靠定子的暴露的绕组，并且如果由于绝缘损失而形成电路，则可以检测到A / D转换器的输入处的电位下降。 在一个实施例中，导电刷是穿过定子绕组移动的手动刷，并且在替代实施例中，导电刷被特别地构造成在自动化过程中抵靠导电绕组定位。

公开(公告)号：US10532420B2

公开(公告)日：2020-01-14

申请号：US15702255

申请日：2017-09-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： James G. Schroth ,  Thomas A. Perry ,  Hongliang Wang

IPC: B23K11/11 ,  B23K11/16 ,  B23K11/18 ,  B23K35/22 ,  B23K35/30 ,  B23K103/12

Abstract: A method of joining together adjacent overlapping copper workpieces by way of resistance spot welding involves providing a workpiece stack-up that includes a first copper workpiece and a second copper workpiece that lies adjacent to the first copper workpiece. The faying surface of the first copper workpiece includes a projection that ascends beyond a surrounding base surface of the faying surface and makes contact, either directly or indirectly, with an opposed faying surface of the second copper workpiece. Once provided, a compressive force is applied against the first and second copper workpieces and an electric current is passed momentarily through the first and second copper workpieces. The electric current initially flows through the projection to generate and concentrate heat within the projection prior to the projection collapsing. This concentrated heat surge allows a metallurgical joint to be established between the first and second copper workpieces.

公开(公告)号：US10226841B2

公开(公告)日：2019-03-12

申请号：US15200452

申请日：2016-07-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Hui-ping Wang ,  Michael G. Poss ,  Aaron D. Cox ,  Blair E. Carlson ,  Thomas A. Perry

IPC: B23K26/70 ,  B23K26/064 ,  B23K26/21 ,  B23K37/00

Abstract: An aperture plate for a welding apparatus includes a body defining an aperture. The body of the aperture plate includes a first end and a second end that is opposite the first end. In addition, the body includes a first surface intersecting the first and second ends. Moreover, the body includes a second surface formed opposite the first surface. The second surface is nonparallel to the first surface.

公开(公告)号：US10213878B2

公开(公告)日：2019-02-26

申请号：US14996549

申请日：2016-01-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： James G. Schroth ,  Thomas A. Perry ,  John S. Agapiou ,  Ronald M. Lesperance

IPC: B23K35/22 ,  B23K9/00 ,  B23K9/23 ,  B23K1/19 ,  B23K1/00 ,  B23K9/167 ,  H02K3/50 ,  H02K15/00 ,  B23K103/12 ,  B23K101/32 ,  B23K101/36

Abstract: An arc welding/brazing process is disclosed that is useful to join together a first copper piece and a second copper piece without damaging more heat-sensitive materials that may be located nearby is disclosed. The arc welding/brazing process includes using a non-consumable electrode wire, which electrically communicates with a weld control in a straight polarity orientation, to strike an arc across a gap established between a leading tip end of the electrode wire and the first copper piece. The current that flows through the arc when the arc is established heats the first copper piece such that the first copper piece becomes joined to a second copper piece. The joint between the first copper piece and the second copper piece may be an autogenous weld joint or a braze joint.

公开(公告)号：US20150301129A1

公开(公告)日：2015-10-22

申请号：US14258736

申请日：2014-04-22

Applicant: GM Global Technology Operations LLC

Inventor： David T. Stark ,  Daniel J. Smith ,  Thomas A. Perry ,  Joshua Charles Sautner

IPC: G01R33/00 ,  F16D21/06 ,  G01D5/14

CPC classification number: G01R33/0076 ,  F16D21/06 ,  F16D2300/18 ,  G01D5/145 ,  G01D5/24433 ,  G01R33/0047

Abstract: A linear magnetic sensor shield system comprises first and second shield parts. The system may include first and second field sensor assemblies, each having field sensors disposed therein. The first shield part may be disposed adjacent to a first side and a third side of the first field sensor assembly, and the second shield part may be disposed adjacent to a second side of the second field sensor assembly. The shield parts may be formed of mu metal, by of example, or they may have a curved shape or a thickness in the range of about 0.015 inch to about 0.030 inch. A torque transmitting device is also provided.

Abstract translation: 线性磁传感器屏蔽系统包括第一和第二屏蔽部分。 该系统可以包括第一和第二场传感器组件，每个具有设置在其中的场传感器。 第一屏蔽部分可以布置成与第一场传感器组件的第一侧和第三侧相邻，并且第二屏蔽部分可以被布置为与第二场传感器组件的第二侧相邻。 屏蔽部分可以由mu金属形成，例如，它们可以具有约0.015英寸至约0.030英寸范围内的弯曲形状或厚度。 还提供了扭矩传递装置。

公开(公告)号：US20150083693A1

公开(公告)日：2015-03-26

申请号：US14488799

申请日：2014-09-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： James G. Schroth ,  David R. Sigler ,  Thomas A. Perry

IPC: B23K11/20 ,  B23K11/30 ,  B23K11/11

CPC classification number: B23K11/20 ,  B23K11/115 ,  B23K11/34 ,  B23K2103/20

Abstract: A method of resistance spot welding a steel workpiece to an aluminum or aluminum alloy workpiece is disclosed. One step of the disclosed method involves providing a workpiece stack-up that includes a steel workpiece and an aluminum workpiece. Another step involves preheating the welding electrode that is meant to contact the aluminum or aluminum alloy workpiece. Yet another step of the disclosed method involves pressing the preheated welding electrode and another welding electrode against opposite sides of the workpiece stack-up, with the preheated welding electrode abutting the aluminum or aluminum alloy workpiece, and passing an electrical current between the two welding electrodes at a weld site to initiate and grow a molten weld pool within the aluminum or aluminum alloy workpiece.

Abstract translation: 公开了一种将钢工件电阻点焊到铝或铝合金工件上的方法。 所公开的方法的一个步骤包括提供包括钢工件和铝工件的工件叠层。 另一步骤是预热焊接电极，其意图是接触铝或铝合金工件。 所公开的方法的另一步骤包括将预热的焊接电极和另一个焊接电极压在工件叠层的相对侧上，预热的焊接电极邻接铝或铝合金工件，并在两个焊接电极之间通过电流 在焊接部位，以在铝或铝合金工件内引发和生长熔融焊池。

公开(公告)号：US10576565B2

公开(公告)日：2020-03-03

申请号：US15273923

申请日：2016-09-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： James G. Schroth ,  Thomas A. Perry ,  Hongliang Wang ,  Chen Zhou

IPC: B23K26/211 ,  B23K1/00 ,  B23K1/18 ,  B23K1/005 ,  B23K101/32 ,  B23K103/12

Abstract: A method of forming a weld interface between a first workpiece and a second workpiece includes arranging a reactive braze material at a first joining surface of the first workpiece. The reactive material is selected to react upon being heated to a temperature below the solidus temperature of the first and second workpieces to form a liquid-containing reaction product. Furthermore, an assembly is prepared of the first workpiece and the second workpiece with the first joining surface of the first workpiece and a second joining surface of the second workpiece separated by the reactive material. The second workpiece is then heated with a first laser beam following a first path and with a second laser beam following a second path.