A vehicular interior rearview mirror assembly includes a mounting structure, a plastic mirror casing, and a mirror reflective element having a glass substrate. The glass substrate includes a periphery surface extending between a planar first surface and a planar second surface and spanning a thickness dimension of the glass substrate. The mirror casing includes a central mounting portion and spaced apart attachment portions. The mirror reflective element is adhesively attached the spaced apart attachment portions. The central mounting portion includes a first pivot element and the mounting structure includes a second pivot element, the first pivot element and the second pivot element forming a pivot joint. The periphery surface of the glass substrate includes a curved outer surface that provides a rounded transition between the planar first surface of the glass substrate and a less-curved outer surface of a side wall of the mirror casing.

A grinder selection device includes: an input unit that inputs a grinding condition for a workpiece as a grinding target of grinding machining including at least the geometry of the workpiece and vibration data indicating vibration of a grinding machine, and grinder information about one or more grinders as grinder candidates to be used for the grinding machining; a learned model acquired through supervised learning using training data containing input data and label data, the input data containing an arbitrary grinding condition for a workpiece as a grinding target of grinding machining by an arbitrary grinding machine including at least the geometry of the workpiece and vibration data indicating vibration of the grinding machine, and grinder information about an arbitrary grinder, the label data being data indicating the adequacy or inadequacy of a combination between the grinding condition and the grinder information about the grinder; and a judgment unit.

A machine learning device is provided with: an input data obtaining unit that, in burnishing process in which a processing surface of an arbitrary workpiece is surface-treated with an arbitrary tool, obtains as input data processing information including information of the workpiece prior to the burnishing process and information of a processing condition; a label obtaining unit that obtains label data indicating processed state information including a processed state of the workpiece after the burnishing process and surface roughness of the workpiece when the processed state is normal; and a learning unit that carries out supervised learning using the input data and the label data thus obtained to generate a learned model to which processing information of an upcoming burnishing process is input and which outputs processed state information for the burnishing process.

A machine learning device is provided with: an input data obtaining unit that, in burnishing process in which a processing surface of an arbitrary workpiece is surface-treated with an arbitrary tool, obtains as input data processing information including information of the workpiece prior to the burnishing process and information of a processing condition; a label obtaining unit that obtains label data indicating processed state information including a processed state of the workpiece after the burnishing process and surface roughness of the workpiece when the processed state is normal; and a learning unit that carries out supervised learning using the input data and the label data thus obtained to generate a learned model to which processing information of an upcoming burnishing process is input and which outputs processed state information for the burnishing process.

A machine for machining sheet metal parts has a plurality of machining stations along a continuous conveyor belt, including a first sanding belt unit with an endlessly rotating sanding belt, a brush unit with horizontally rotating abrasive brushes and a second sanding belt unit with a fine-grained sanding belt. The three machining stations can be adjusted independently, and the machining tools are interchangeable. The technical data of the machining tools is stored in a tool memory. The machine includes a device for providing a suggestion for an optimal adjustment as well as an operator terminal with a touch screen, via which the user can make inputs and/or receive information from or about the machine. Based on the data entered by the user and the data stored in the machine, the user receives a suggestion for the optimal adjustment of the machine and is prompted to change the tool if necessary.

A grinding apparatus acquires a ground-off quantity of a wafer that is being ground, by subtracting a vertical length |(H0−H1)| by which grindstones are worn that is acquired by an upper surface height measuring instrument that is selectively lifted and lowered in unison with a grinding mechanism from a distance |(Z0−Z1)| by which the grinding mechanism is lowered that is acquired by a Z-axis encoder coupled with the grinding mechanism. Since the ground-off quantity of the wafer is acquired using the upper surface height measuring instrument and the Z-axis encoder, it is not necessary to determine the ground-off quantity of the wafer with use of only an upper surface height measuring instrument disposed on a foundation, as has been customary heretofore.

A grinding apparatus acquires a ground-off quantity of a wafer that is being ground, by subtracting a vertical length |(H0−H1)| by which grindstones are worn that is acquired by an upper surface height measuring instrument that is selectively lifted and lowered in unison with a grinding mechanism from a distance |(Z0−Z1)| by which the grinding mechanism is lowered that is acquired by a Z-axis encoder coupled with the grinding mechanism. Since the ground-off quantity of the wafer is acquired using the upper surface height measuring instrument and the Z-axis encoder, it is not necessary to determine the ground-off quantity of the wafer with use of only an upper surface height measuring instrument disposed on a foundation, as has been customary heretofore.

Workpiece holder (3) for coupling a workpiece (2) provided with reference surfaces (30) to a machining device (200) for manufacturing a rotational-symmetrical tool (1) with at least one geometrically defined cutting edge (10), the workpiece holder (3) comprises a machine part (31) configured to be connectable to the machining device (200) in a releasable rotationally fixed manner, a clamping part (32) configured to receive and clamp the workpiece (2) in a releasable manner. The clamping part (32) of the workpiece holder (3) comprises at least one slot (40) provided at a circumference thereof and configured to provide access to the reference surfaces (30) of the clamped workpiece (2) therethrough.

Disclosed are a machining method and a machining device improving machining efficiency and preserving workpiece surface integrity. The machining method improving machining efficiency and preserving workpiece surface integrity includes: setting a workpiece (300) and a machining unit (400); and machining the workpiece (300) by the machining unit (400) at a preset machining speed, wherein the preset machining speed is not lower than a machining speed corresponding to the embrittlement of the workpiece material. By the machining method, the machining speed of the machining unit (400) is set during machining, which results in “skin effect” of subsurface damage caused by the embrittlement of the workpiece material (300) and enables the damage depth of the workpiece (300) to be confined in a shallow subsurface layer, so that the damage depth of the workpiece (300) is reduced, the workpiece integrity is preserved, and the machining quality and the machining efficiency are improved.

An angle grinder (200), which includes a gear neck (210) for connecting a dust hood (100, 100′) equipped with a flange (90), the angle grinder (200) including a sensor unit (20), with the aid of which it is possible to detect which type of dust hood (100, 100′) is connected to the angle grinder (200), the angle grinder (200) also including rotational direction control electronics (230), which are connected by signals to the sensor unit (20) in such a way that the rotational direction (GGD, GLD) of a cutting wheel (220) of the angle grinder (200) is predefined as a function of the dust hood type detected by the sensor unit (20).