A welding method of a battery cover plate includes performing at least two times of continuous welding along a connecting zone between a cover plate and a shell, and adjusting laser welding power, welding speeds, and defocusing amounts. Welding power of a first continuous welding is less than welding power of a second continuous welding. An amount of deformation of the shell is less than or equal to 0.6 mm after the first continuous welding, and the amount of deformation of the shell is less than or equal to 1.0 mm after the second continuous welding.

A plurality of values measured are relatively compared to determine an optical axis deviation direction in which an optical axis of a measurement beam S deviates from a laser beam L. In performing laser welding in the optical axis deviation direction, an irradiation position of the measurement beam S is changed so that the irradiation position of the measurement beam S is moved to a rear side of the center of the optical axis of the laser beam L in the welding direction.

A plurality of values measured are relatively compared to determine an optical axis deviation direction in which an optical axis of a measurement beam S deviates from a laser beam L. In performing laser welding in the optical axis deviation direction, an irradiation position of the measurement beam S is changed so that the irradiation position of the measurement beam S is moved to a rear side of the center of the optical axis of the laser beam L in the welding direction.

A processing apparatus processes an object by irradiating the object with a processing light, and includes: a combining optical system that combines an optical path of the processing light from the processing light source and an optical path of a first measurement light from a measurement light source; an irradiation optical system that irradiates the object with processing light and the first measurement light through the combining optical system; a position change apparatus that changes a position of the irradiation optical system relative to the object; an imaging apparatus a position of which is changed together with the irradiation optical system and which captures an image of the object; and a detection apparatus that detects, through the irradiation optical system and the combining optical system, a second measurement light generated from the object due to the first measurement light with which the object is irradiated through the irradiation optical system.

A processing apparatus processes an object by irradiating the object with a processing light, and includes: a combining optical system that combines an optical path of the processing light from the processing light source and an optical path of a first measurement light from a measurement light source; an irradiation optical system that irradiates the object with processing light and the first measurement light through the combining optical system; a position change apparatus that changes a position of the irradiation optical system relative to the object; an imaging apparatus a position of which is changed together with the irradiation optical system and which captures an image of the object; and a detection apparatus that detects, through the irradiation optical system and the combining optical system, a second measurement light generated from the object due to the first measurement light with which the object is irradiated through the irradiation optical system.

A build plate-clamping assembly may include a work station having a build plate-receiving surface and a lock-pin extending from the build plate-receiving surface of the work station. The lock-pin may include a hollow pin body, a piston disposed within the hollow pin body, with the piston axially movable from a retracted position to an actuated position, and a plurality of detents, with the plurality of detents radially extensible through respective ones of a plurality of detent-apertures in the hollow pin body responsive to the piston having been axially moved to the actuated position. A methods of working on workpieces may include lockingly engaging a build plate at a first work station, performing a first work-step, releasing the build plate from the first work station, lockingly engaging the build plate at a second work station, and performing a second work-step. An additive manufacturing system may include a vision system with a first build plate-receiving surface and an additive manufacturing machine with a second build plate-receiving surface.

A build plate-clamping assembly may include a work station having a build plate-receiving surface and a lock-pin extending from the build plate-receiving surface of the work station. The lock-pin may include a hollow pin body, a piston disposed within the hollow pin body, with the piston axially movable from a retracted position to an actuated position, and a plurality of detents, with the plurality of detents radially extensible through respective ones of a plurality of detent-apertures in the hollow pin body responsive to the piston having been axially moved to the actuated position. A methods of working on workpieces may include lockingly engaging a build plate at a first work station, performing a first work-step, releasing the build plate from the first work station, lockingly engaging the build plate at a second work station, and performing a second work-step. An additive manufacturing system may include a vision system with a first build plate-receiving surface and an additive manufacturing machine with a second build plate-receiving surface.

A laser welding control method, apparatus and system, and an electronic device are disclosed, the method includes: receiving a current position of a welding head fed back by an encoder; determining whether the current position reaches a set position; and in response to the welding head reaching the set position, sending a laser control signal to a laser device to control the laser device to output laser at the set position.

A laser welding control method, apparatus and system, and an electronic device are disclosed, the method includes: receiving a current position of a welding head fed back by an encoder; determining whether the current position reaches a set position; and in response to the welding head reaching the set position, sending a laser control signal to a laser device to control the laser device to output laser at the set position.

An adjustment method of a laser processing apparatus includes a spatial light modulator adjustment step of adjusting a spatial light modulator into a state ready for splitting a laser beam emitted from a laser oscillator and applying a plurality of laser beams such that laser beams will have a desired positional relation, a processing mark formation step of operating the laser oscillator to apply the laser beams to a wafer such that a plurality of processing marks is formed, an imaging step of stopping the laser oscillator, and imaging the processing marks formed at the wafer, and an aberration correction step of correcting aberration of the condenser by comparing the desired positional relation and a positional relation among the imaged processing marks, and adjusting the spatial light modulator such that the positional relation among the processing marks conforms to the desired positional relation.