A method for forming a device structure is disclosed. The method of forming a device structure includes forming a variable-depth structure in a device material layer using a laser ablation. A plurality of device structures is formed in the variable-depth structure to define slanted device structures therein. The variable-depth structure and the slanted device structures are formed using an etch process.

Embodiments relate to an aligner breakage solution that tests damage to an aligner using machine learning. A method includes of training a machine learning model to predict damage to an orthodontic aligner includes gathering a training dataset comprising digital designs for a plurality of orthodontic aligners, wherein each digital design is associated with a respective orthodontic aligner of the plurality of orthodontic aligners, and wherein each digital design comprises metadata indicating whether the associated respective orthodontic aligner was damaged during manufacturing of the associated respective orthodontic aligner. The method further includes training the machine learning model using the training dataset, wherein the machine learning model is trained to process data from a digital design for an orthodontic aligner and to output a probability that the orthodontic aligner associated with the digital design will be damaged during manufacturing of the orthodontic aligner.

A method for manufacturing a mold for a retroreflective element, the mold having plural polygonal faces having a common vertex, the method including the steps of: roughing of a polygonal face in which cutting is carried out such that a predetermined cutting amount in a finishing process is left with respect to a desired shape; and finishing of the polygonal face in which a blade portion is made to move relatively towards the vertex while an angle of relief of the blade portion is kept within 1 degree so as to carry out cutting of the predetermined cutting amount, wherein a depth of cut for each one-time cutting operation is 2 micrometers or smaller, and the movement of the blade portion is a combination of a motion towards the vertex and an oscillation.

An apparatus and a method for manufacturing a reactor capable of both absorbing a dimensional variation of a core and preventing deformation due to a resin pressure during molding are provided. An apparatus for manufacturing a reactor is provided with a core. The apparatus includes a mold including a cavity for housing the core. The mold includes a plurality of pins protruding into the cavity. When the core is disposed in the cavity, at least one of the plurality of pins is not fixed, and each of the pins functions as a positioning pin. When a molded article is molded, the pin is fixed, and each pin functions as a core support pin for supporting the core against a resin pressure during molding.

Implementations describe systems and methods for manufacturing and performing quality assessment of dental appliances. In one embodiment, a method of manufacturing a dental appliance comprises receiving, at a holder, a feature of the dental appliance, the feature comprising a first surface having a first shape, wherein the holder holds the feature of the dental appliance at a reference position. The method further includes automatically placing an object against the feature at the reference position using a robot arm, wherein the object comprises a second surface having a second shape that mates with the first shape. The method further includes applying pressure to press the object against the feature of the dental appliance and bonding the object to the feature of the dental appliance while applying the pressure.

There are provided a decorative sheet having excellent fingerprint resistance of the surface of the decorative sheet, a decorative board, a method for manufacturing a transfer master plate, and a method for manufacturing a decorative sheet. The decorative sheet includes: a base material layer; a colored pattern layer provided on one surface of the base material layer; and a first surface protective layer provided on the surface on the side opposite to the base material layer of the colored pattern layer and having irregular shapes on the surface. The decorative sheet is formed using a transfer master plate which is a resin material having irregular shapes for master plate on the surface formed by irradiating the surface of an applied ionizing radiation curable resin with a first ionizing radiation having energy capable of cleaving a polymer chain of the ionizing radiation curable to shrink the surface of the ionizing radiation curable resin, forming the irregular shapes for master plate on the surface of the ionizing radiation curable resin, irradiating the shrunk ionizing radiation curable resin with a second ionizing radiation curing the ionizing radiation curable resin to cure the ionizing radiation curable resin.

A core molding apparatus and a core molding method capable of reducing the possibility of the deterioration in the calculation accuracy of the amount of supply of a raw material for a core are provided. A core molding apparatus includes: a kneading tank configured to knead a raw material for a core; a raw material supply unit configured to supply the raw material to the kneading tank; a mold configured to contain a kneaded material made of the raw material kneaded in the kneading tank and to mold the core; a piston configured to inject the kneaded material contained in the kneading tank into the mold; and a control unit configured to control an amount of supply of the raw material from the raw material supply unit to the kneading tank.

A molding shrinkage ratio is predicted according to molding conditions set in advance in designing a mold. A machine learning device includes an input data acquiring unit that acquires input data including any molding condition including a type of resin, a type of additive, a blending ratio of the additive, a surface temperature of a mold, and a product of a holding pressure and a holding pressure time for any article molded by any injection molding machine, a label acquiring unit that acquires label data indicating a molding shrinkage ratio in a flow direction and a molding shrinkage ratio in a vertical direction perpendicular to the flow direction of a resin measured of the article molded at the molding condition, and a learning unit that executes supervised learning using the input data and the label data, and generates a learned model.

A method is provided for fitting a curved surface model in a three-dimensional space to a plurality of object points in the three-dimensional space by causing a computer to perform free-form deformation (FFD). Embodiments include the steps of setting closest points corresponding to measurement points on a curved surface model, determining the movement amounts of control points by executing a least squares method to minimize the sum of squares of the distances between the closest points and the measurement points, and fitting the curved surface model to the measurement points by executing FFD based on the movement amounts.

Provided is a method for manufacturing a mold used in an injection molding device. The manufacturing method includes: a first step of shaping a stacked body as a part of the mold by discharging a shaping material to stack layers on a base plate; and a second step of manufacturing the mold including a mold base, the base plate, and the stacked body by incorporating the base plate on which the stacked body is shaped inside an opening provided in the mold base.