It is possible to improve workpiece machining efficiency by efficiently receiving and delivering a workpiece from/to each workpiece holder and shortening a time required for workpiece conveyance. A workpiece conveyance system is a workpiece conveyance system that receives and delivers workpieces W to be machined to n spindles (workpiece holders, where n is an integer satisfying n≥2) that hold and rotate the workpieces W, and includes a main loader including n+m main loader chucks (where m is an integer satisfying m≥1) that receive and deliver workpieces from/to the n spindles or n relay loaders disposed corresponding to the n respective spindles to receive and deliver the workpieces W from/to the main shafts.

It is possible to improve workpiece machining efficiency by efficiently receiving and delivering a workpiece from/to each workpiece holder and shortening a time required for workpiece conveyance. A workpiece conveyance system is a workpiece conveyance system that receives and delivers workpieces W to be machined to n spindles (workpiece holders, where n is an integer satisfying n≥2) that hold and rotate the workpieces W, and includes a main loader including n+m main loader chucks (where m is an integer satisfying m≥1) that receive and deliver workpieces from/to the n spindles or n relay loaders disposed corresponding to the n respective spindles to receive and deliver the workpieces W from/to the main shafts.

A method of fabricating a refrigerator cabinet or door includes forming a wrapper and an inner liner. The method further includes forming a vacuum insulated core comprising a permeable core material that is disposed inside an impermeable envelope. A sheet of prefabricated compressible foam material is positioned between the vacuum insulated core between the inner door liner and/or the door wrapper. The prefabricated compressible foam material may be cut from a sheet of foam having substantially uniform thickness prior to fabrication of the refrigerator door. The foam compresses to accommodate differences in spacing between the vacuum insulated core and the door wrapper and/or the door liner.

It is possible to improve workpiece machining efficiency by efficiently receiving and delivering a workpiece from/to each workpiece holder and shortening a time required for workpiece conveyance. A workpiece conveyance system is a workpiece conveyance system that receives and delivers workpieces W to be machined to n spindles (workpiece holders, where n is an integer satisfying n2) that hold and rotate the workpieces W, and includes a main loader including n+m main loader chucks (where m is an integer satisfying m1) that receive and deliver workpieces from/to the n spindles or n relay loaders disposed corresponding to the n respective spindles to receive and deliver the workpieces W from/to the main shafts.

It is possible to improve workpiece machining efficiency by efficiently receiving and delivering a workpiece from/to each workpiece holder and shortening a time required for workpiece conveyance. A workpiece conveyance system is a workpiece conveyance system that receives and delivers workpieces W to be machined to n spindles (workpiece holders, where n is an integer satisfying n2) that hold and rotate the workpieces W, and includes a main loader including n+m main loader chucks (where m is an integer satisfying m1) that receive and deliver workpieces from/to the n spindles or n relay loaders disposed corresponding to the n respective spindles to receive and deliver the workpieces W from/to the main shafts.

An electrically conductive sandwich panel (10) supplies at least one electrical device to be pushed into the panel. The sandwich panel (10) has two electrically conductive layers (13, 15) insulated from each other and a layer (11) formed by a board (12, 14) insulated from said electrical layers. The board has two sheets (111, 112) of cardboard enclosing an electrically insulating material, such as plaster. Connectors are used to connect the electrically conductive layers to a power supply. The panel may be screw-fastened on a support by means of suitable screws and may be fitted with a suitable electrical device. A punch tool facilitates pushing the electrical device into the panel.