2results about How to "High manufacturing stability" patented technology

This invention provides a pump housing comprising a first housing, a second housing, and an assembly. The second housing is connected to the first housing to form a receiving cavity capable of accommodating an impeller. At least one of the first and second housings has a groove with an opening facing the receiving cavity. The groove has a first side annular surface. The assembly includes a connected mounting surface and a second side annular surface. The assembly is accommodated in the groove, with the mounting surface facing the surface of the impeller housed within the receiving cavity, and the second side annular surface contacting the first side annular surface. The pump housing provided by this invention, by additionally providing the assembly to be installed in at least one of the first and second housings, allows for separate processing of the first housing, the second housing, and the assembly. This enables control over the flatness of the mounting surface, providing a basis for significant improvement in the flatness of the mounting surface and preventing thrombosis while improving the overall operational accuracy of the ventricular assist device. This invention also provides a pump body and a ventricular assist device.

The invention discloses a laser machining device for a surface microstructure of a thin-wall spherical shell type micro-component, and relates to the technical field of micro-component surface machining. The problem that due to the fact that traditional material removal modes such as ultra-precision cutting are incomplete in material removal and substandard in contour precision, the manufacturing requirement caused by the nanoscale precision of the surface microstructure of the thin-wall spherical shell micro-component cannot be met is solved, the device comprises an X / Y / Z / B / C axis movement unit, a Y axis, a B axis and a C axis are sequentially arranged on a horizontal base table board in a stacked mode, and a workpiece is installed on a C axis objective table; the X axis and the Z axis are mounted on a cross beam of the portal frame in an overlapping manner, the laser processing head is fixed on a Z-axis carriage, and the workpiece position change introduced by the swing of the B axis can be compensated through the X axis; according to the device, laser processing and in-situ detection of the surface microstructure of the thin-wall spherical shell micro-component are integrated, high-precision adjustment of a movement position, precise regulation and control of laser pulse energy and precise capturing and recognition of a feature point position can be achieved, and high-precision stable controllable removal of an incomplete part of a cutting processing material is met.