摘要:
A three-dimensional object is manufactured from a powder of polymer material by selective sintering process by means of electromagnetic radiation of the powder, wherein the powder comprises a preselected polymer or copolymer and is subjected to selective sintering such that the manufactured three-dimensional object has a final crystallinity which is in such a range that the balance of properties, in particular mechanical properties including Young's modulus, tensile strength and elongation at break, is improved.
摘要:
A three-dimensional object is manufactured from a powder of polymer material by selective sintering process by means of electromagnetic radiation of the powder, wherein the powder comprises a preselected polymer or copolymer and is subjected to selective sintering such that the manufactured three-dimensional object has a final crystallinity which is in such a range that the balance of properties, in particular mechanical properties including Young's modulus, tensile strength and elongation at break, is improved.
摘要:
A three-dimensional object is manufactured by selective sintering by means of electromagnetic radiation, wherein the powder comprises a polymer or copolymer having at least one of the following structural characteristics: (i) at least one branching group in the backbone chain of the polymer or copolymer, provided that in case of the use of polyaryletherketones (PAEK) the branching group is an aromatic structural unit in the backbone chain of the polymer or copolymer; (ii) modification of at least one end group of the backbone chain of the polymer or copolymer; (iii) at least one bulky group within the backbone chain of the polymer of copolymer, provided that in case of the use of polyaryletherketones (PAEK) the bulky group is not selected from the group consisting of phenylene, biphenylene, naphthalene and CH2— or isopropylidene-linked aromatics; (iv) at least one aromatic group non-linearly linking the backbone chain.
摘要:
A three-dimensional object is manufactured by selective sintering by means of electromagnetic radiation, wherein the powder comprises a polymer or copolymer having at least one of the following structural characteristics: (i) at least one branching group in the backbone chain of the polymer or copolymer, provided that in case of the use of polyaryletherketones (PAEK) the branching group is an aromatic structural unit in the backbone chain of the polymer or copolymer; (ii) modification of at least one end group of the backbone chain of the polymer or copolymer; (iii) at least one bulky group within the backbone chain of the polymer of copolymer, provided that in case of the use of polyaryletherketones (PAEK) the bulky group is not selected from the group consisting of phenylene, biphenylene, naphthalene and CH2— or isopropylidene-linked aromatics; (iv) at least one aromatic group non-linearly linking the backbone chain.
摘要:
The invention relates to a hard finish machine (1) for hard finishing of a workpiece (2), comprising at least two different hard finish tools (3, 4) which are arranged on a tool spindle (5), wherein the tool spindle (5) is arranged movable in the direction (Y) of its axis (6) on a tool carrier (7), wherein the tool carrier (7) is translational movable relatively to a machine bed (8) and wherein the hard finish machine furthermore comprises cooling lubricant supplying means (9) for the supply of cooling lubricant to the machining region between the workpiece (2) and the hard finish tool (2, 3). To work in all possible tool and method combinations with optimized cooling lubricant supply conditions the invention proposes that the cooling lubricant supplying means (9) comprise at least one nozzle element (10), wherein the nozzle element (10) comprises a nozzle chamber (11), wherein the nozzle chamber (11) is limited by two facing wall elements (12, 13) which define a stream exit opening (14) for the cooling lubricant and wherein at least one of the wall elements (12, 13) is arranged movable for the variation of the stream exit opening (14).
摘要:
The invention relates to a hard finish machine (1) for hard finishing of a workpiece (2), comprising at least two different hard finish tools (3, 4) which are arranged on a tool spindle (5), wherein the tool spindle (5) is arranged movable in the direction (Y) of its axis (6) on a tool carrier (7), wherein the tool carrier (7) is translational movable relatively to a machine bed (8) and wherein the hard finish machine furthermore comprises cooling lubricant supplying means (9) for the supply of cooling lubricant to the machining region between the workpiece (2) and the hard finish tool (2, 3). To work in all possible tool and method combinations with optimized cooling lubricant supply conditions the invention proposes that the cooling lubricant supplying means (9) comprise at least a first cooling lubricant nozzle (9′) having at least one opening for a stream of cooling lubricant and at least a second cooling lubricant nozzle (9″) having at least one opening for a stream of cooling lubricant, wherein the two cooling lubricant nozzles (9′, 9″) are arranged movable relatively to another in the direction (Y) of the axis (6) of the tool spindle (5).
摘要:
A small electrical appliance is provided. The small electrical appliance includes a switch element having an on position and an off position that can be activated by a user; an indicator element having a first function and a second function; and a control unit for monitoring the switch element and for controlling the indicator element. The small electrical appliance includes a first operating condition and a second operating condition. And the control unit activates the indicator element to indicate the first function when the small electrical appliance is in the first operating condition and the switch element is in the off position, and the control unit activates the indicator element to indicate the second function when the small electrical appliance is in the first operating condition and the switch element is in the on position.
摘要:
In order to avoid erroneous or incorrectly attributed comments in picture-assisted documentation systems, the invention proposes a system which comprises at least one mobile terminal, at least one server and at least two machine-readable markers applied to or on articles, in which the mobile terminal comprises a reading unit which can be used to read the markers applied to or on the articles, a camera for taking pictures, and means for sending pictures.
摘要:
A motor vehicle includes a body structure that has a lateral structure, a vehicle seat that is mounted on the body structure, and a side impact protection device for a passenger in the vehicle. The side impact protection device includes a head airbag with a first inflation device that can deploy upward in the region of the breastwork of the lateral structure, and a side airbag with a second inflation device that can deploy laterally out of the seat. In order for the side impact protection device to be used for different body structures, the side airbag is designed as a thorax airbag, which, in its ready state, is positioned, together with the second inflation device, inside the seat back of the vehicle seat, and can deploy essentially toward the front out of the side wall of the seat back. When the thorax airbag is in its deployed state, its upper edge comes to rest next to the breastwork of the lateral structure.
摘要:
Apparatuses and methods for improving aberration determination capabilities, providing corrective prescription verification, and allowing binocular vision correction in ophthalmic wavefront measuring devices. (1) Improved aberration determination capabilities are achieved through input beam modification which includes sensing an image in a wavefront emanating from an eye in response to an input beam with a sensor and then modifying the input beam with an adaptive optical device based on the sensed information. (2) Corrective prescription verification includes modifying an image with an adaptive optical element to produce a corrected image at the patients eye. (3) Binocular vision correction for a pair of eyes includes measuring the aberrations of one eye with a first ophthalmic wavefront measuring device and measuring the aberration produced by the other eye with a second ophthalmic wavefront measuring device substantially simultaneously.