CA2747897A1 - Using phase change expansion of a substance to perform work on a workpiece - Google Patents

Using phase change expansion of a substance to perform work on a workpiece Download PDF

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Publication number
CA2747897A1
CA2747897A1 CA2747897A CA2747897A CA2747897A1 CA 2747897 A1 CA2747897 A1 CA 2747897A1 CA 2747897 A CA2747897 A CA 2747897A CA 2747897 A CA2747897 A CA 2747897A CA 2747897 A1 CA2747897 A1 CA 2747897A1
Authority
CA
Canada
Prior art keywords
workpiece
hollow interior
interior space
container
piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2747897A
Other languages
French (fr)
Other versions
CA2747897C (en
Inventor
Abdulrahman Abdulkadar Mohammad Fakieh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fakieh Research & Development Center
Original Assignee
Fakieh Research & Development Center
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fakieh Research & Development Center filed Critical Fakieh Research & Development Center
Priority to CA2747897A priority Critical patent/CA2747897C/en
Publication of CA2747897A1 publication Critical patent/CA2747897A1/en
Priority to JP2012146128A priority patent/JP2013035062A/en
Priority to US13/539,079 priority patent/US20130031898A1/en
Application granted granted Critical
Publication of CA2747897C publication Critical patent/CA2747897C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/005—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by thermal expansion or evaporation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Press Drives And Press Lines (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

Apparatus and method for working of a workpiece use the expansion of water in a container during the freezing process to drive a piston against a workpiece that is positioned to at least partially overlie a cross-sectional area of a hollow interior of the container. Use of a piston with a tapered working end focuses the resulting force against a small area of the workplece in order to produce a bend in the workpiece at the point of application. In environments where conventional bending tools are not available, the apparatus can be used to perform bending or other operations on workpieces of varying materials.

Claims (26)

1. Apparatus for working of a workpiece, the apparatus comprising:

a container comprising a hollow interior space for receipt of a substance known to expand when transitioning from one phase to another;

a closure member for closing off a respective end of the hollow interior space of the container in a fluid-tight manner containing the substance within the hollow cylindrical interior space at said respective end.

a piston slidable within a cylindrical portion of the hollow interior space of the container along an axis of said hollow interior space;

a fluid-tight seal between the piston and a boundary wall closing around the axis of the hollow space for containing the substance within the hollow interior space between the piston and the closure member; and a workpiece support feature arranged to support the workpiece in a position placing at least. part of the workpiece over a cross-sectional area of the hollow interior space of the container.
2. Apparatus for working of a workpiece, the apparatus comprising:

a container comprising a hollow interior space containing a substance known to expand when transitioning from one phase to another;

a closure member closing off a respective and of the hollow interior space of the container in a fluid-tight manner.

a piston slidably disposed within a cylindrical portion of the hollow interior space of the container;

a fluid-tight seat between the piston and a boundary wall closing around the axis of the hollow space to contain the substance within the hollow interior space between the fluid tight seal and the closure member; and a workpiece support feature arranged to support the workpiece in a position placing at least part of the workpiece over a cross-sectional area of the hollow interior space of the container.
3. The apparatus of claim 1 wherein the workpiece support feature comprises a workpiece passage extending into said container and passing through the hollow interior space thereof at a distance from the closure member for receipt of the workpiece in the passage in a position placing a part of the workpiece within the hollow interior of the container.
4. The apparatus of claim 2 wherein the workpiece support feature comprises a workpiece passage extending into said container and passing through the hollow interior space on a side of the piston opposite the closure member for receipt of the workpiece in the passage in a position placing part of the workpiece within the hollow interior of the container.
5. The apparatus of claim 3 or 4 wherein the workpiece passage comprises a cylindrical bore.
6. The apparatus of any one of claims 1 to 5 wherein the closure member is removably engagable to the container for selective opening and closing of the respective end of the hollow interior space.
7. The apparatus of claim 6 wherein the closure member and the container are matingly threaded.
8. The apparatus of ay one of claims 1 to 7 wherein a working end of the piston comprises a non-planar surface for working the workpiece.
9. The apparatus of claim 8 wherein the working end of the piston is at least partially conical.
10. The apparatus of 8 wherein the working end of the piston is wedge-shaped.
11. The apparatus of any one of claims 1 to 10 further comprising a cover for closing off a second end of the hollow interior space.
12. The apparatus of claim 11 wherein the cover is selectively engagable to and removable from the container.
13. The apparatus of any one of claims 1 to 12 wherein the piston is one of a plurality of differently shaped pistons selectable for use within the hollow interior.
14. The apparatus of claim 13 wherein each piston comprises a peaked end tapering at a respectively different angle.
15. The apparatus of claim 2 wherein the substance expands as it transitions into a solid state.
16. The apparatus of claim 15 wherein the substance is water.
17. A method of working a workpiece, the method comprising:

(a) providing a container comprising a hollow interior space that has at least one closed end and contains a substance known to expand when transitioning from one phase to another;

(b) positioning the workpiece in a manner holding at least part of the workpiece over a cross-sectional area of the hollow interior space of the container;
and (c) with the substance contained between the closed end of the hollow interior space and a piston slidably disposed within a cylindrical portion of the hollow interior space, causing the substance to transition from the one phase to the other to force the piston against the workpiece to perform a working operation thereon.
18. The method of claim 17 wherein step (b) comprises inserting the workpiece into a workpiece passage that extends into the container and passes through the hollow interior space thereof on a side of the piston opposite the closure member.
19. The method of claim 17 or 18 wherein step (c) comprises causing the substance to solidify.
20. The method of claim 17 or 18 wherein step (c) comprises cooling the substance.
21. The method of claim 17 or 18 wherein step (c) comprises freezing the substance.
22. The method of any one of claims 17 to 21 wherein the substance is water.
23. The method of any one of claims 17 to 21 wherein forcing the piston against the workpiece in step (c) forms a bend in the workpiece.
24. The method of any one of claims 17 to 22 wherein step (c) comprises forcing a tapered end of the piston against the workpiece.
25. The method of claim 24 wherein the tapered end is conically tapered.
26. The method of claim 24 wherein the tapered end is wedge-shaped.
CA2747897A 2011-08-03 2011-08-03 Using phase change expansion of a substance to perform work on a workpiece Expired - Fee Related CA2747897C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA2747897A CA2747897C (en) 2011-08-03 2011-08-03 Using phase change expansion of a substance to perform work on a workpiece
JP2012146128A JP2013035062A (en) 2011-08-03 2012-06-28 Using phase change expansion of substance to perform work on workpiece
US13/539,079 US20130031898A1 (en) 2011-08-03 2012-06-29 Using phase change expansion of a substance to perform work on a workpiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2747897A CA2747897C (en) 2011-08-03 2011-08-03 Using phase change expansion of a substance to perform work on a workpiece

Publications (2)

Publication Number Publication Date
CA2747897A1 true CA2747897A1 (en) 2011-10-11
CA2747897C CA2747897C (en) 2012-10-16

Family

ID=44786906

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2747897A Expired - Fee Related CA2747897C (en) 2011-08-03 2011-08-03 Using phase change expansion of a substance to perform work on a workpiece

Country Status (3)

Country Link
US (1) US20130031898A1 (en)
JP (1) JP2013035062A (en)
CA (1) CA2747897C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103334910B (en) * 2013-07-04 2015-10-28 吉林大学 A kind of squeezing unit of the internal pressure utilizing the sell of one's property of water freezing phase raw
CN104819088B (en) * 2015-03-31 2017-05-17 周红军 Water-ice phase change power generation system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2302953A (en) * 1940-07-23 1942-11-24 Hydraulic Dev Corp Inc Method of metal stretching, using blank-holder types of presses
US3751956A (en) * 1971-09-27 1973-08-14 I P Spa Sa Fluid-dynamic press for the cold forming of sheet metal
CH666857A5 (en) * 1984-11-27 1988-08-31 Heinrich Schmid Maschinen Und SWASH PRESS.
US4807855A (en) * 1987-07-24 1989-02-28 Suspa, Incorporated Gas cylinder plunger lock
US5065607A (en) * 1989-10-30 1991-11-19 Teledyne Industries, Inc. Piston and cylinder assembly
US5819573A (en) * 1997-06-17 1998-10-13 Seaman; Roy C. Hydraulic forming of workpieces from sheet metal
JP3850663B2 (en) * 1998-07-23 2006-11-29 テレダイン・インダストリーズ・インコーポレーテッド Low contact force spring
US6332318B1 (en) * 2000-04-28 2001-12-25 Lucent Technologies Inc. Solidification engine and thermal management system for electronics
US8683803B2 (en) * 2007-01-24 2014-04-01 Ashraf F. Bastawros Method and apparatus for energy harvesting through phase-change induced pressure rise under cooling conditions

Also Published As

Publication number Publication date
JP2013035062A (en) 2013-02-21
US20130031898A1 (en) 2013-02-07
CA2747897C (en) 2012-10-16

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MKLA Lapsed

Effective date: 20190806