公开(公告)号：US08797023B2

公开(公告)日：2014-08-05

申请号：US14001697

申请日：2011-03-07

申请人： Masafumi Suzuki ,  Tomonari Kogure ,  Mayumi Nakanishi

发明人： Masafumi Suzuki ,  Tomonari Kogure ,  Mayumi Nakanishi

IPC分类号： G01R33/16

CPC分类号： G01R33/16 ,  G01R33/1215 ,  G01R33/123

摘要： Provided is a coercive-force specifying apparatus capable of creating a demagnetization curve for each divisional area of a coercive-force distributed magnet without breaking the coercive-force distributed magnet and of specifying an average coercive force for each divisional area precisely.A coercive force specifying apparatus of the present invention includes: a yoke including an insertion space into which a coercive-force distributed magnet is to be inserted; a magnetizing coil; a search coil that detects a magnetization change when the magnetic field is applied to the coercive-force distributed magnet; and a tracer that creates a demagnetization curve on a basis of a voltage value generated due to the magnetization change. The end face is provided with two or more loop-shaped thread grooves bored therein, the search coil being provided in each thread groove. The coercive-force distributed magnet includes a divisional area defined so as to correspond to each of the two or more search coils, and a voltage value due to a magnetization change detected by each search coil is transmitted to the tracer for creation of a magnetization curve at a corresponding divisional area as well as for specification of an average coercive force.

摘要翻译： 提供一种矫顽力指定装置，其能够在不破坏矫顽力分布磁体的同时产生矫顽力分布磁体的每个分区的去磁曲线，并且精确地指定每个分区的平均矫顽力。 本发明的矫顽力指定装置包括：轭，其包括插入空间，矫顽力分布磁体将被插入到该插入空间中; 磁化线圈; 搜索线圈，当磁场施加到矫顽力分布磁体时检测磁化变化; 以及基于由于磁化变化而产生的电压值产生退磁曲线的示踪器。 端面设置有两个或多个在其中钻孔的环形螺纹槽，搜索线圈设置在每个螺纹槽中。 矫顽力分布磁体包括限定为与两个或更多个搜索线圈中的每一个对应的分区，并且由每个搜索线圈检测到的由磁化变化引起的电压值被传送到示踪器，以产生磁化曲线 在相应的分区，以及用于规定平均矫顽力。

公开(公告)号：US20130335064A1

公开(公告)日：2013-12-19

申请号：US14001697

申请日：2011-03-07

申请人： Masafumi Suzuki ,  Tomonari Kogure ,  Mayumi Nakanishi

发明人： Masafumi Suzuki ,  Tomonari Kogure ,  Mayumi Nakanishi

IPC分类号： G01R33/16

CPC分类号： G01R33/16 ,  G01R33/1215 ,  G01R33/123

摘要： Provided is a coercive-force specifying apparatus capable of creating a demagnetization curve for each divisional area of a coercive-force distributed magnet without breaking the coercive-force distributed magnet and of specifying an average coercive force for each divisional area precisely. A coercive force specifying apparatus of the present invention includes: a yoke including an insertion space into which a coercive-force distributed magnet is to be inserted; a magnetizing coil; a search coil that detects a magnetization change when the magnetic field is applied to the coercive-force distributed magnet; and a tracer that creates a demagnetization curve on a basis of a voltage value generated due to the magnetization change. The end face is provided with two or more loop-shaped thread grooves bored therein, the search coil being provided in each thread groove. The coercive-force distributed magnet includes a divisional area defined so as to correspond to each of the two or more search coils, and a voltage value due to a magnetization change detected by each search coil is transmitted to the tracer for creation of a magnetization curve at a corresponding divisional area as well as for specification of an average coercive force.

摘要翻译： 提供一种矫顽力指定装置，其能够在不破坏矫顽力分布磁体的同时产生矫顽力分布磁体的每个分区的去磁曲线，并且精确地指定每个分区的平均矫顽力。 本发明的矫顽力指定装置包括：轭，其包括插入空间，矫顽力分布磁体将被插入到该插入空间中; 磁化线圈; 搜索线圈，当磁场施加到矫顽力分布磁体时检测磁化变化; 以及基于由于磁化变化而产生的电压值产生退磁曲线的示踪器。 端面设置有两个或多个在其中钻孔的环形螺纹槽，搜索线圈设置在每个螺纹槽中。 矫顽力分布磁体包括限定为与两个或更多个搜索线圈中的每一个对应的分区，并且由每个搜索线圈检测到的由磁化变化引起的电压值被传送到示踪器，以产生磁化曲线 在相应的分区，以及用于规定平均矫顽力。

公开(公告)号：US20130002240A1

公开(公告)日：2013-01-03

申请号：US13583681

申请日：2010-03-15

申请人： Tomonari Kogure ,  Mayumi Nakanishi

发明人： Tomonari Kogure ,  Mayumi Nakanishi

IPC分类号： G01R33/16

CPC分类号： G01R33/10 ,  G01R31/34 ,  G01R33/1215 ,  G01R33/1223

摘要： According to the present invention, a method for determining coercivity of a coercivity distribution magnet, whereby coercivity of each portion in the coercivity distribution magnet can be determined with good accuracy without, for example, cutting the coercivity distribution magnet into pieces and thus quality assurance can be achieved with good accuracy, is provided.The coercivity determination method of the present invention comprises the following steps: a step of dividing a plane of a coercivity distribution magnet into a plurality of virtual plane segmented regions, placing the coercivity distribution magnet in a demagnetization-field-applying device, providing detectors for the plane segmented regions, and creating a demagnetization loss curve for each plane segmented region; a step of determining the minimum coercivity and the mean coercivity; a step of creating a coercivity distribution graph based on three hypotheses; and a step of determining the coercivity at an arbitrary position on the plane of the coercivity distribution magnet with the use of the coercivity distribution graph based on which the coercivity for each plane segmented region is determined.

摘要翻译： 根据本发明，一种用于确定矫顽磁力分布磁体的矫顽力的方法，由此可以在没有例如将矫顽力分布磁铁切割成碎片的情况下以高精度确定矫顽力分布磁体中各部分的矫顽力，从而可以确保质量保证 提供良好的准确性。 本发明的矫顽力测定方法包括以下步骤：将矫顽力分布磁体的平面分割为多个虚拟平面分割区域，将矫顽力分布磁铁置于退磁场施加装置中，提供检测器 平面分割区域，并为每个平面分割区域产生去磁损耗曲线; 确定最小矫顽力和平均矫顽力的步骤; 基于三个假设创建矫顽力分布图的步骤; 以及使用确定每个平面分割区域的矫顽力的矫顽力分布图来确定矫顽力分布磁体的平面上的任意位置的矫顽力的步骤。

公开(公告)号：US08547086B2

公开(公告)日：2013-10-01

申请号：US13816004

申请日：2010-08-11

申请人： Masafumi Suzuki ,  Mayumi Nakanishi

发明人： Masafumi Suzuki ,  Mayumi Nakanishi

IPC分类号： G01N27/76

CPC分类号： G01R33/16 ,  G01R33/123

摘要： There is provided a coercivity performance determination device for a coercivity distribution magnet that is capable of determining, in a short period of time, with precision, and at as low a testing cost as possible, whether or not each part of one coercivity distribution magnet has a coercivity that is equal to or greater than the required coercivity. A coercivity determining device of the present invention comprises: a substantially C-shaped magnetic body; excitation means that generates a magnetic flow in the magnetic body; and a flux meter that measures the residual magnetic flux of the coercivity distribution magnet. Protrusions are provided at corresponding positions on two opposing end faces of the magnetic body, and the coercivity distribution magnet is held between the two protrusions to form an annular magnetic circuit. An external magnetic field generation means is formed by magnetic regions caused by the protrusions and non-magnetic regions comprising the air in the periphery thereof. An external magnetic field that is generated when magnetism flows through the protrusions is adjusted in such a manner that a reverse magnetic field, which comprises the sum of the external magnetic field and the demagnetizing field of the coercivity distribution magnet, corresponds to the coercivity required of each part of the coercivity distribution magnet. The residual magnetic flux when this has acted as the reverse magnetic field is measured with the flux meter to determine coercivity performance.

摘要翻译： 提供了一种用于矫顽力分布磁体的矫顽力性能确定装置，其能够在短时间内精确地确定尽可能低的测试成本，一个矫顽力分布磁体的每个部分是否具有 矫顽力等于或大于所需的矫顽力。 本发明的矫顽力测定装置包括：基本上C形的磁体; 激励意味着在磁体中产生磁流; 以及测量矫顽力分布磁体的剩余磁通量的磁通计。 在磁性体的两个相对的端面上的对应位置处设有突起，并且矫顽力分布磁体保持在两个突起之间以形成环形磁路。 外部磁场产生装置由包括在其周边的空气的突起和非磁性区域引起的磁性区域形成。 磁性流过突起时产生的外部磁场被调整为包括外部磁场和矫顽力分布磁体的去磁场之和的反向磁场对应于矫顽磁力所需的矫顽力 每部分矫顽力分布磁铁。 用磁通计测量其作为反向磁场的剩余磁通量，以确定矫顽力性能。

公开(公告)号：US20130141080A1

公开(公告)日：2013-06-06

申请号：US13816004

申请日：2010-08-11

申请人： Masafumi Suzuki ,  Mayumi Nakanishi

发明人： Masafumi Suzuki ,  Mayumi Nakanishi

IPC分类号： G01R33/16

CPC分类号： G01R33/16 ,  G01R33/123

摘要： There is provided a coercivity performance determination device for a coercivity distribution magnet that is capable of determining, in a short period of time, with precision, and at as low a testing cost as possible, whether or not each part of one coercivity distribution magnet has a coercivity that is equal to or greater than the required coercivity. A coercivity determining device of the present invention comprises: a substantially C-shaped magnetic body; excitation means that generates a magnetic flow in the magnetic body; and a flux meter that measures the residual magnetic flux of the coercivity distribution magnet. Protrusions are provided at corresponding positions on two opposing end faces of the magnetic body, and the coercivity distribution magnet is held between the two protrusions to form an annular magnetic circuit. An external magnetic field generation means is formed by magnetic regions caused by the protrusions and non-magnetic regions comprising the air in the periphery thereof. An external magnetic field that is generated when magnetism flows through the protrusions is adjusted in such a manner that a reverse magnetic field, which comprises the sum of the external magnetic field and the demagnetizing field of the coercivity distribution magnet, corresponds to the coercivity required of each part of the coercivity distribution magnet. The residual magnetic flux when this has acted as the reverse magnetic field is measured with the flux meter to determine coercivity performance.

摘要翻译： 提供了一种用于矫顽力分布磁体的矫顽力性能确定装置，其能够在短时间内精确地确定尽可能低的测试成本，一个矫顽力分布磁体的每个部分是否具有 矫顽力等于或大于所需的矫顽力。 本发明的矫顽力测定装置包括：基本上C形的磁体; 激励意味着在磁体中产生磁流; 以及测量矫顽力分布磁体的剩余磁通量的磁通计。 在磁性体的两个相对的端面上的对应位置处设有突起，并且矫顽力分布磁体保持在两个突起之间以形成环形磁路。 外部磁场产生装置由包括在其周边的空气的突起和非磁性区域引起的磁性区域形成。 磁性流过突起时产生的外部磁场被调整为包括外部磁场和矫顽力分布磁体的去磁场之和的反向磁场对应于矫顽磁力所需的矫顽力 每部分矫顽力分布磁铁。 用磁通计测量其作为反向磁场的剩余磁通量，以确定矫顽力性能。

公开(公告)号：US08493062B2

公开(公告)日：2013-07-23

申请号：US13583681

申请日：2010-03-15

申请人： Tomonari Kogure ,  Mayumi Nakanishi

发明人： Tomonari Kogure ,  Mayumi Nakanishi

IPC分类号： G01N27/76

CPC分类号： G01R33/10 ,  G01R31/34 ,  G01R33/1215 ,  G01R33/1223

摘要： According to the present invention, a method for determining coercivity of a coercivity distribution magnet, whereby coercivity of each portion in the coercivity distribution magnet can be determined with good accuracy without, for example, cutting the coercivity distribution magnet into pieces and thus quality assurance can be achieved with good accuracy, is provided.The coercivity determination method of the present invention comprises the following steps: a step of dividing a plane of a coercivity distribution magnet into a plurality of virtual plane segmented regions, placing the coercivity distribution magnet in a demagnetization-field-applying device, providing detectors for the plane segmented regions, and creating a demagnetization loss curve for each plane segmented region; a step of determining the minimum coercivity and the mean coercivity; a step of creating a coercivity distribution graph based on three hypotheses; and a step of determining the coercivity at an arbitrary position on the plane of the coercivity distribution magnet with the use of the coercivity distribution graph based on which the coercivity for each plane segmented region is determined.

摘要翻译： 根据本发明，一种用于确定矫顽磁力分布磁体的矫顽力的方法，由此能够以高精度确定矫顽磁力分布磁铁中各部分的矫顽力，而不需要例如将矫顽力分布磁铁切割成片，从而可以确保质量保证 提供良好的准确性。 本发明的矫顽力测定方法包括以下步骤：将矫顽力分布磁体的平面分割为多个虚拟平面分割区域，将矫顽力分布磁铁置于退磁场施加装置中，提供检测器 平面分割区域，并为每个平面分割区域产生去磁损耗曲线; 确定最小矫顽力和平均矫顽力的步骤; 基于三个假设创建矫顽力分布图的步骤; 以及使用确定每个平面分割区域的矫顽力的矫顽力分布图来确定矫顽力分布磁体的平面上的任意位置的矫顽力的步骤。