A complex flow tube for fine sealing coating of a PVC material for an automobile includes a base fixed to a mechanical arm, and a pipeline connected to the base for delivering a PVC sealant; the base is detachably butted with an interface of a PVC gluing pump mounted on the mechanical arm; the PVC gluing pump delivers the PVC sealant through the pipeline to a part to be coated or sealed of the automobile. The complex flow tube may be combined with the metal 3D printing technology, so that the manufactured complex flow tube has the advantages of being convenient to use, simple in structure, high in strength, not liable to break, etc.

A complex flow tube for fine sealing coating of a PVC material for an automobile includes a base fixed to a mechanical arm, and a pipeline connected to the base for delivering a PVC sealant; the base is detachably butted with an interface of a PVC gluing pump mounted on the mechanical arm; the PVC gluing pump delivers the PVC sealant through the pipeline to a part to be coated or sealed of the automobile. The complex flow tube may be combined with the metal 3D printing technology, so that the manufactured complex flow tube has the advantages of being convenient to use, simple in structure, high in strength, not liable to break, etc.

According to some embodiments, system and methods are provided comprising receiving, via a communication interface of a parameter development module comprising a processor, a defined geometry for one or more parts, wherein the parts are manufactured with an additive manufacturing machine, and wherein a stack is formed from one or more parts; fabricating the one or more parts with the additive manufacturing machine based on a first parameter set; collecting in-situ monitoring data from one or more in-situ monitoring systems of the additive manufacturing machine for one or more parts; determining whether each stack should receive an additional part based on an analysis of the collected in-situ monitoring data; and fabricating each additional part based on the determination the stack should receive the additional part. Numerous other aspects are provided.

Selective laser solidification apparatus is described that includes a powder bed onto which a powder layer can be deposited and a gas flow unit for passing a flow of gas over the powder bed along a predefined gas flow direction. A laser scanning unit is provided for scanning a laser beam over the powder layer to selectively solidify at least part of the powder layer to form a required pattern. The required pattern is formed from a plurality of stripes or stripe segments that are formed by advancing the laser beam along the stripe or stripe segment in a stripe formation direction. The stripe formation direction is arranged so that it always at least partially opposes the predefined gas flow direction. A corresponding method is also described.

Selective laser solidification apparatus is described that includes a powder bed onto which a powder layer can be deposited and a gas flow unit for passing a flow of gas over the powder bed along a predefined gas flow direction. A laser scanning unit is provided for scanning a laser beam over the powder layer to selectively solidify at least part of the powder layer to form a required pattern. The required pattern is formed from a plurality of stripes or stripe segments that are formed by advancing the laser beam along the stripe or stripe segment in a stripe formation direction. The stripe formation direction is arranged so that it always at least partially opposes the predefined gas flow direction. A corresponding method is also described.

The present invention relates to a method for generating a tool path (20; 82) for an application tool (12) for additive manufacturing, in particular for additive manufacturing using buildup welding, of a substantially rotationally symmetric workpiece (28; 328), comprising the following steps: a) providing cross-sectional contour data describing at least a portion of a cross-sectional contour (42; 342; 442; 542) of the workpiece (28; 328); b) providing axis data describing a rotation axis (R) of the rotationally symmetric workpiece (28; 328); c) generating a continuous cross-sectional path (54; 354; 355; 454; 554), taking into account the cross-sectional contour data, the cross-sectional path (54; 354; 355; 454; 554) being inscribed in the portion of the cross-sectional contour (42; 342; 442; 542); d) generating the tool path (20; 82) with a helical or/and spiral course revolving around the rotation axis (R), wherein the tool path (20; 82) intersects the cross-sectional path (54; 354; 355; 454; 554), preferably with each revolution around the rotation axis (R).

The present invention relates to a method for generating a tool path (20; 82) for an application tool (12) for additive manufacturing, in particular for additive manufacturing using buildup welding, of a substantially rotationally symmetric workpiece (28; 328), comprising the following steps: a) providing cross-sectional contour data describing at least a portion of a cross-sectional contour (42; 342; 442; 542) of the workpiece (28; 328); b) providing axis data describing a rotation axis (R) of the rotationally symmetric workpiece (28; 328); c) generating a continuous cross-sectional path (54; 354; 355; 454; 554), taking into account the cross-sectional contour data, the cross-sectional path (54; 354; 355; 454; 554) being inscribed in the portion of the cross-sectional contour (42; 342; 442; 542); d) generating the tool path (20; 82) with a helical or/and spiral course revolving around the rotation axis (R), wherein the tool path (20; 82) intersects the cross-sectional path (54; 354; 355; 454; 554), preferably with each revolution around the rotation axis (R).

In one example, a three-dimensional (3D) printing method is disclosed. The 3D printing method may partition an entirety of a powder bed into a plurality of portions including a first portion and a second portion. The method may position an energy source over first portion of the powder bed, apply irradiation to the first portion until an irradiation dose is reached, and turn off irradiation to the first portion of the powder bed. The 3D printing method may rearrange the energy source and the powder bed to position the energy source over a second portion of the powder bed, apply irradiation to the second portion until the irradiation dose is reached, and turn off irradiation to the second portion of the powder bed.

Certain aspects of the present disclosure provide a method for optimizing process parameters for additive manufacturing, including: determining a change to at least one process parameter of a plurality of process parameters while additively manufacturing a first part using an additive manufacturing apparatus according to a build file comprising machine code defining the plurality of process parameters; modifying the build file based on the determined change to the at least one process parameter to generate a modified build file; additively manufacturing a second part using the additive manufacturing apparatus according to the modified build file, wherein: additively manufacturing the first part is performed in a closed-loop control mode, and additively manufacturing the second part is performed in an open-loop control mode.

Certain aspects of the present disclosure provide a method for optimizing process parameters for additive manufacturing, including: determining a change to at least one process parameter of a plurality of process parameters while additively manufacturing a first part using an additive manufacturing apparatus according to a build file comprising machine code defining the plurality of process parameters; modifying the build file based on the determined change to the at least one process parameter to generate a modified build file; additively manufacturing a second part using the additive manufacturing apparatus according to the modified build file, wherein: additively manufacturing the first part is performed in a closed-loop control mode, and additively manufacturing the second part is performed in an open-loop control mode.