Manifold for a liquid cooling system

Patent metadata

Field	Value
Publication number	US-2016354833-A1
Application number	US-201514856592-A
Country	US
Kind code	A1
Filing date	Sep 17, 2015
Priority date	Jun 2, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

A method including punching a first hole in a parent sheet metal, such that a substantially round section with a first diameter is removed from the hole, forming a second hole by inserting a mandrel into the first hole, causing a portion of the parent sheet metal to deform in a downward direction and increase the diameter of the first hole to a second diameter, the deformed portion of the parent sheet metal is substantially perpendicular to the parent sheet metal, forming a thread into an interior sidewall of the second hole, and forming the parent sheet metal into a water tight manifold.

First claim

What is claimed is:

1 . A method comprising:
forming a hole in a sheet metal flat pattern, the hole having a first diameter; forming a hole extrusion in the sheet metal flat pattern aligned with the hole, the hole extrusion comprises an inside diameter larger than the first diameter; forming a thread in an inner sidewall of the hole extrusion; and forming the sheet metal flat pattern into a water tight manifold.

2 . The method of claim 1 , wherein the hole extrusion comprises a portion of the sheet metal extending in a downward direction substantially perpendicular to a top surface of the sheet metal.

3 . The method of claim 1 , further comprising:
deburring the hole extrusion prior to forming the sheet metal flat pattern into the water tight manifold.

4 . The method of claim 1 , wherein forming the hole comprises:
punching an initial hole using a punch press, the initial hole essentially in a circular pattern with a third diameter; shaving the initial hole to remove a small portion of an edge of the initial hole to increase the third diameter to the first diameter; and coining the initial hole to remove any burs and sharp edges.

5 . The method of claim 1 , wherein joining edges of the sheet metal flat pattern comprises welding or brazing.

6 . The method of claim 1 , where a height of the extrusion is directly proportional to a thickness of the sheet metal and the inside diameter of the hole extrusion.

7 . The method of claim 1 , wherein an inside diameter of the hole extrusion is approximately twice the diameter of the hole.

8 . The method of claim 1 , wherein the inside diameter of the hole extrusion is approximately a minimum of four times a height of the hole extrusion.

9 . The method of claim 1 , wherein a height of the hole extrusion is at least three times a pitch of the thread.

10 . The method of claim 1 , wherein a wall thickness of the hole extrusion is at least two times a difference between a major diameter of the thread and a minor diameter of the thread.

11 . A method comprising:
punching a first hole in a parent sheet metal, such that a substantially round section with a first diameter is removed from the hole; forming a second hole by inserting a mandrel into the first hole, causing a portion of the parent sheet metal to deform in a downward direction and increase the diameter of the first hole to a second diameter, the deformed portion of the parent sheet metal is substantially perpendicular to the parent sheet metal; forming a thread into an interior sidewall of the second hole; and forming the parent sheet metal into a water tight manifold.

12 . The method of claim 11 , where a height of the deformed portion is directly proportional to a thickness of the sheet metal and the inside diameter of the hole extrusion.

13 . The method of claim 11 , wherein an inside diameter of the deformed portion is approximately twice the diameter of the hole.

14 . The method of claim 11 , wherein an inside diameter of the deformed portion is approximately a minimum of four times a height of the deformed portion.

15 . The method of claim 11 , wherein a height of the deformed portion is at least three times a pitch of the thread.

16 . The method of claim 11 , wherein a wall thickness of the deformed portion is at least two times a difference between a major diameter of the thread and a minor diameter of the thread.

Assignees

• IBM

Inventors

• Krug Jr Francis R
• Zoodsma Randy J

Classifications

• F28F9/10 Primary

  by screw-type connections, e.g. gland · CPC title

• F28F9/0248

  Arrangements for sealing connectors to header boxes · CPC title

• B21D53/02

  heat exchangers {or parts thereof}, e.g. radiators, condensers {fins, headers}(making finned or ribbed tubes by fixing strip material or the like to tubes B21C37/22) · CPC title

• B21D19/088

  for flanging holes · CPC title

• B21C37/292

  Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall · CPC title