Configurable printed-circuit-board-assembly component pressing fixture

A pressing fixture comprising:

• a fixture plate comprising a set of threaded holes;
• a set of threaded pressing devices inserted partially into the threaded holes, each threaded pressing device comprising:
• a screw body comprising:
• a screw shaft that comprises exterior spiral threads and an interior cavity;
• a screw head that comprises a driver interface;
• a pin partially inserted into the interior cavity, the pin comprising:
• a first pin end inserted into the interior cavity;
• a pin shaft that is connected to the first end;
• and
• a second pin end that is connected to the pin shaft and that is exterior to the interior cavity;
• a spring inserted into the interior cavity;
• wherein the pin is capable of advancing into the interior cavity, and wherein the spring is coiled around the pin shaft;
• wherein rotating a pressing device in the set of pressing devices in a first direction of rotation that is parallel to the fixture plate causes the pressing device to move in a first axial direction that is perpendicular to the fixture plate and wherein rotating the pressing device in a second direction of rotation that is opposite the first direction of rotation causes the pressing device to move in a second axial direction that is opposite the first axial direction.

A method of pressing a component for a first printed circuit board assembly to a printed circuit board, the method comprising:

• inserting the printed circuit board into a pressing fixture wherein the pressing fixture comprises:
• a fixture plate comprising a set of threaded holes;
• a set of threaded pressing devices inserted partially into the threaded holes, each threaded pressing device comprising:
• a screw body comprising:
• a screw shaft that comprises exterior spiral threads and an interior cavity;
• a screw head that comprises a driver interface;
• a pin partially inserted into the interior cavity, the pin comprising:
• a first pin end inserted into the interior cavity;
• a pin shaft that is connected to the first end;
• and
• a second pin end that is connected to the pin shaft and that is exterior to the interior cavity;
• a spring inserted into the interior cavity;
• wherein the pin is capable of advancing into the interior cavity, and wherein the spring is coiled around the pin shaft;
• wherein rotating a pressing device in the set of pressing devices in a first direction of rotation that is parallel to the fixture plate causes the pressing device to move in a first axial direction that is perpendicular to the fixture plate and wherein rotating the pressing device in a second direction of rotation that is opposite the first direction of rotation causes the pressing device to move in a second axial direction that is opposite the first axial direction;
• determining that a historical pressing plan is not available for the printed circuit board;
• mapping a set of components on the first printed circuit board assembly;
• extending the set of pressing devices to the set of components, wherein the weight of a set of pins in the set of pressing devices applies a force to the set of components on the printed circuit board;
• creating, based on the extending, a pressing plan for the first printed circuit board assembly;
• and
• performing wave soldering on the first printed circuit board assembly.