2 results about "Constant linear velocity" patented technology

This invention discloses an online inspection system and method for printed circuit board (PCB) apertures, specifically comprising: a platform for undisturbed, uniform-speed transmission, used to carry and drive the PCB through the inspection station at a constant linear velocity; a high-resolution incremental photoelectric encoder coaxially and directly connected to the drive shaft end of the platform, used to output differential pulse signals that strictly correspond to the absolute displacement of the PCB in real time; a non-transparent, dual-telecentric optical module, vertically mounted directly above the inspection station, with an optical distortion rate of less than 0.05%; the optical module is equipped with a large-area global exposure industrial camera, used to eliminate visible artifacts on the inner wall of the aperture at the edge of the field of view caused by the perspective angle; the printed circuit boards of this invention can flow through the inspection machine at extremely high speeds. The production capacity of one machine is equivalent to ten traditional stop-and-go automatic optical inspection machines, greatly reducing the depreciation costs of factory equipment.

The invention relates to the technical field of metal material pulse laser processing, and particularly discloses a device and method for online cutting of an iron-based amorphous alloy sheet through pulse laser. The device comprises pulse laser cutting units arranged on the two sides of a conveying path, galvanometer driving modules arranged at the output ends of the cutting units, a high-speed conveying belt mechanism used for conveying the iron-based amorphous alloy sheets at the constant linear speed, and a speed sensing unit used for monitoring and feeding back the conveying speed of a sheet belt. The control system module is used for controlling a laser switch and synchronous coordinated movement; and the mounting support assembly is used for stabilizing device positioning and structure fixing. The pulse laser one-way dynamic cutting device integrates the advantages of a high-speed kinematic model, pulse laser one-way dynamic cutting, closed-loop speed control, a low heat influence technology and the like, has the characteristics of high cutting speed, high precision, small thermal deformation, high applicability and the like, and has a wide industrial application prospect.