73results about How to "Good molding precision" patented technology

The invention discloses a high-precision laser additive and subtractive material combined manufacturing device. The device comprises a sealed forming chamber, an inert protective gas source and a machining forming platform. The inert protective gas source is connected with the sealed forming chamber. The machining forming platform is arranged in the sealed forming chamber, and a light path selection system is arranged over the machining forming platform. A machining station is arranged on the machining forming platform, a lead screw is arranged at the bottom of the machining forming platform,the machining forming platform is fixed to a sliding block of the lead screw, the lead screw is connected with a lead screw motor, and the machining forming platform can be driven by the lead screw motor to slide forwards and backwards on the lead screw. The light path selection system comprises an additive material independent laser light path and a subtractive material independent laser light path. The additive material independent laser light path and the subtractive material independent laser light path are parallel to each other, are arranged in the direction of the lead screw and do notshare equipment. According to the device, the laser additive and subtractive material technology is integrated, the forming precision, the surface quality, the structure performance and the residual stress state of a complex fine additive workpiece are improved, and one-stop high-efficiency high-precision and high-performance additive workpiece manufacturing operation is achieved.

The invention discloses an automatic nylon tube hot forming apparatus and process, and relates to the technical field of nylon tube forming. The automatic nylon tube hot forming apparatus comprises abody, a feeding assembly, a heating assembly and a bending assembly, wherein the heating assembly comprises a baking oven in communication with the feeding assembly and an electric heating cylinder arranged between the baking oven and the bending assembly; a heating ring is arranged in the electric heating cylinder; a nylon tube is fed from the feeding assembly and enters the bending assembly through the baking oven and the heating ring; the electric heating cylinder and the bending assembly are arranged outside the body; and an air cooling system and a cutting device are arranged outside thebending assembly. The nylon tube forming process comprises the following steps: pulling; heating in the body; heating outside the body; bending; staying; feeding; angle adjusting; repeating the previous steps until the length and the bending degree of the nylon tube meet the requirements; and cutting off. The apparatus and process have the beneficial effects of improving the forming precision of the nylon tube, ensuring the product quality and improving the machining efficiency.

Laser ray transmitting colored resin composition comprising a polyphenylene sulfide resin and a colorant having an endothermic peak between 200°C and 300°C as determined by TG / DTA thermal analysis, wherein the difference T C -T N between the crystallization point T C of the laser ray transmitting colored resin composition and the crystallization point T N of the same composition as said composition except for not containing the aforementioned colorant, is not less than 0°C as determined by DSC thermal analysis. Laser ray transmitting material made of the laser ray transmitting colored resin composition, and having one exothermic energy peak and one endothermic energy peak as determined by DSC thermal analysis. The laser ray transmitting colored resin composition excellent in molding accuracy, good in molded product appearance and gloss, capable of preventing or effectively reducing the gap between the materials to be welded in the case of a molded product used for laser welding, and good in heat resistance and fastness, and the laser ray transmitting material excellent in dimension stability and shape stability and capable of preventing or effectively reducing the gap between the materials to be welded when used for laser welding.

A press mold for fabricating a glass substrate, the glass substrate comprising a substrate; and a terrace-shaped flat portion formed on the substrate and having a grooved portion formed therein, is characterized in that the press mold comprises a top mold and a bottom mold; at least one of the top mold and the bottom mold having an indented portion formed therein so as to correspond to the terrace-shaped flat portion, the indented portion having an entire periphery surrounded by a mold reference surface.