Abstract: A method for manufacturing a metal object having a solid lubricating surface layer includes: providing a metal blank having a surface; providing a plurality of microparticles and solid lubricating powder, and mixing them together, wherein the microparticles have a hardness greater than that of the surface; and projecting the microparticles and the solid lubricating powder onto the surface, wherein the microparticles cause plastic flow on the surface to form a compressive stress layer, and the solid lubricating powder adheres to the compressive stress layer to form a solid lubricating surface layer.

Abstract: Embodiments of the present disclosure provide a method and a system for optimizing metal stamping process parameters, thereby performing die parameters optimization and stamping forming curve optimization to achieve various design goals. Embodiments of the present disclosure automatically model the die parameters and stamping forming curves, and import them into an optimization process. Embodiments of the present disclosure use a response surface method to fit a linear polynomial function, and then perform optimization on a response surface to obtain a best die parameters values combination and a best stamping forming curve.

Abstract: A method for manufacturing a metal object having a solid lubricating surface layer includes: providing a metal blank having a surface; providing a plurality of microparticles and solid lubricating powder, and mixing them together, wherein the microparticles have a hardness greater than that of the surface; and projecting the microparticles and the solid lubricating powder onto the surface, wherein the microparticles cause plastic flow on the surface to form a compressive stress layer, and the solid lubricating powder adheres to the compressive stress layer to form a solid lubricating surface layer.

Abstract: A compound particle and a product manufactured from the compound particles are provided to solve a problem of a rough surface of a product made by additive manufacturing technology. The compound particle has a metal core and a ceramic shell wrapping the metal core. A melting point of the ceramic shell is higher than a melting point of the metal core.

Abstract: A light collecting module that includes at least one light concentrating unit, at least one collimating unit, and a focusing mirror is provided. The light concentrating unit has a light input end and a light output end opposite to the light input end, and the light concentrating unit is configured to collect lights at various incident angles through the light input end and concentrate the lights on the light output end. The collimating unit collimates the lights from the light output end of the light concentrating unit. The focusing mirror focuses the collimated lights from the collimating unit on a focus of the focusing mirror.

Abstract: A porous aerostatic carrier includes a porous body made by additive manufacturing method and a sealing layer, the porous body comprises a first ventilating portion and a second ventilating portion, and a first porosity of the first ventilating portion is higher than a second porosity of the second ventilating portion. Because of additive manufacturing method, pore size and porosity of the first ventilating portion and the second ventilating portion are controllable to make flow pressure passing through the porous aerostatic carrier distributing evenly.

Abstract: A self-drilling expansion fastener is integrally formed of a sheet metal material for locking two or more sheet workpieces together, and includes an expansion structure and a drill structure. The expansion structure has a plurality of internal threads and force-distributing bars. The drill structure has a chip guard for covering a head of the expansion structure, and a drill forward projected from the chip guar for self-drilling a hole. When an externally threaded element is screwed into the expansion structure to mesh with the internal threads, the force-distributing bars are brought to expand outward and are finally compressed into a folded state to thereby tightly lock the sheet workpieces to one another. A method of forming the self-drilling expansion fastener is also disclosed.

Abstract: A self-drilling expansion fastener is integrally formed of a sheet metal material for locking two or more sheet workpieces together, and includes an expansion structure and a drill structure. The expansion structure has a plurality of internal threads and force-distributing bars. The drill structure has a chip guard for covering a head of the expansion structure, and a drill forward projected from the chip guar for self-drilling a hole. When an externally threaded element is screwed into the expansion structure to mesh with the internal threads, the force-distributing bars are brought to expand outward and are finally compressed into a folded state to thereby tightly lock the sheet workpieces to one another. A method of forming the self-drilling expansion fastener is also disclosed.

Abstract: The present invention provides an evaluation method for calibration of a processing equipment. According to the present invention, prior to processing a device, a test member including the same thickness and material with the device is manufactured. Then, the processing equipment is used to process the device, the test member and form a micro-processing structure in the test member. Next, the status of the micro-processing structure in the test member is inspected for evaluating if the processing equipment should be calibrated. In this way, the size and shape accuracy of the formation micro-processing structures using the monitored processing equipment can be reasonably guaranteed.

Abstract: A self-drilling expansion fastener is integrally formed of a sheet metal material for locking two or more sheet workpieces together, and includes an expansion structure and a drill structure. The expansion structure has a plurality of internal threads and force-distributing bars. The drill structure has a chip guard for covering a head of the expansion structure, and a drill forward projected from the chip guar for self-drilling a hole. When an externally threaded element is screwed into the expansion structure to mesh with the internal threads, the force-distributing bars are brought to expand outward and are finally compressed into a folded state to thereby tightly lock the sheet workpieces to one another. A method of forming the self-drilling expansion fastener is also disclosed.

Abstract: An expansion mounting sleeve includes a forward tapered cylindrical body formed by stamping a material strip, and the cylindrical body defines an internally threaded tapered bore. A plurality of engaging teeth having different heights and shapes are formed to project from the cylindrical body. After the sleeve has been driven into or mounted-in a hole formed on a wall, a ready-made bolt having length, size, and screw threads matching the threaded bore of the cylindrical body may be screwed into the bore and thereby expands the tapered cylindrical body of the sleeve, causing the engaging teeth to move outward to tightly engage with the wall in the hole and firmly hold the expansion mounting-sleeve in place in the hole. A method of forming the expansion mounting sleeve is also provided.

Abstract: An expansion mounting sleeve includes a forward tapered cylindrical body formed by stamping a material strip, and the cylindrical body defines an internally threaded tapered bore. A plurality of engaging teeth having different heights and shapes are formed to project from the cylindrical body. After the sleeve has been driven into or mounted in a hole formed on a wall, a ready-made bolt having length, size, and screw threads matching the threaded bore of the cylindrical body may be screwed into the bore and thereby expands the tapered cylindrical body of the sleeve, causing the engaging teeth to move outward to tightly engage with the wall in the hole and firmly hold the expansion mounting sleeve in place in the hole. A method of forming the expansion mounting sleeve is also provided.