Systems and methods for joining components

Patent metadata

Field	Value
Publication number	US-2016167353-A1
Application number	US-201414568363-A
Country	US
Kind code	A1
Filing date	Dec 12, 2014
Priority date	Dec 12, 2014
Publication date	Jun 16, 2016
Grant date	—

Abstract

The present technology discloses methods for joining a first workpiece and a second workpiece through an interlocking weld, and products formed thereby. The first workpiece has a first surface and a second surface opposite the first surface, and the second workpiece has a first surface, a groove formed in the first surface, and a second surface opposite the first surface. The system is formed by applying energy to the system, at least partially melting material of the first workpiece, and causing the material to flow into the groove, and allowing or causing the material to cool, forming an interlocked-weld joint connecting the workpieces.

First claim

1 . A method, for forming a joint surface between a first workpiece and a second workpiece, comprising:
providing a second surface, opposite a first surface, of the first workpiece in contact with a first surface, opposite a second surface, of the second workpiece, the first surface of the second workpiece having formed therein a slot groove positioned at an angle between 0 degrees and 90 degrees relative to the first surface of the second workpiece, wherein the slot groove is sized and shaped to receive molten workpiece material from the first workpiece, when energy is applied to at least one of the first workpiece and the second workpiece, thereby enhancing interlock between the first workpiece and the second workpiece so that the joint surface formed can withstand a higher amount of fracture energy after a joint is formed than if the slot groove were not present; applying energy to at least one of the first workpiece and the second workpiece causing material of the first workpiece to melt, yielding the molten workpiece material, and flow into the slot groove formed in the first surface of the second workpiece; and allowing or causing the molten workpiece material to cool, forming an interlocking weld comprising the slot groove and joining the first workpiece to the second workpiece.

2 . The method of claim 1 wherein forming the joint surface further comprises forming the slot groove mechanically, electrically, or by chemically etching into the first surface of the second workpiece.

3 . The method of claim 1 wherein the angle is between 60 degrees and 30.

4 . The method of claim 1 wherein:
the first surface of the second workpiece has a plurality of slot grooves formed therein;
a first of the slot grooves has a side extending at a first angle between 0 degrees and 90 degrees relative to the first surface of the second workpiece, in a reference frame, and a second of the slot grooves has a side extending at a second angle between 90 degrees and 180 degrees relative to the first surface of the second workpiece in the reference frame; and
energy applied, in forming the system, comprises melting the material of the first workpiece causing it to flow into each of the slot grooves formed in the first surface of the second workpiece forming the interlocking weld joining the first workpiece to the second workpiece.

5 . The method of claim 1 wherein:
the first workpiece comprises, prior to the energy being applied, a protrusion extending from the second surface opposite the slot groove in the first surface of the second workpiece; and
energy applied, in forming the joint surface, to melt the material of the first workpiece comprises melting at least a portion of the protrusion so that it flows into the slot groove toward forming the interlocking weld joining the first workpiece to the second workpiece.

6 . The method of claim 1 wherein applying energy, in forming the joint surface, to melt the material of the first workpiece comprises one of applying a laser to melt the material of the first workpiece, applying induction to melt the material of the first workpiece, and applying ultrasonic vibrations to melt the material of the first workpiece.

7 . A system comprising:
a first workpiece comprising a first surface and a second surface opposite the surface; and a second workpiece comprising a first surface connected by an interlocking weld with the second surface of the first workpiece and having formed therein a groove forming part of the interlocking weld; wherein the system is formed by:
providing the second surface of the first workpiece in contact with surface of the second workpiece;
applying energy to at least one of the first workpiece and the second workpiece causing material of the first workpiece to melt, yielding molten and flow into the groove formed in the first surface of the second workpiece; and
allowing or causing the molten material to cool, forming the interlocking weld joining the first workpiece to the second workpiece.

8 . The system of claim 7 wherein forming the system further comprises forming the groove mechanically, electrically, or by chemically etching into the first surface of the second workpiece.

9 . The system of claim 7 wherein the groove extends at an angle between 90 degrees and 0 degrees to the first surface of the second workpiece.

10 . The system of claim 7 wherein:
the first surface of the second workpiece has a plurality of grooves formed therein;
a first of the grooves has a side extending at a first angle between 0 degrees and 90 degrees from the first surface of the second workpiece, in a reference frame, and a second of the grooves has a side extending at a second angle between 90 degrees and 180 degrees from the first surface of the second workpiece in the reference frame; and
energy applied, in forming the system, comprises melting the material of the first workpiece causing it to flow into each of the grooves formed in the first surface of the second toward forming the interlocking weld joining the first workpiece to the second workpiece.

11 . The system of claim 7 wherein:
the grooves have a first wall and a second wall;
at least a portion of the first wall extends at a first angle between 0 degrees and 90 degrees from the first surface of the second workpiece, in a reference frame; and
at least a portion of the second wall extends at a second angle between 90 degrees and 180 degrees from the first surface of the second workpiece in the reference frame.

12 . The system of claim 7 wherein:
the first workpiece comprises, prior to the energy being applied, a protrusion extending from the second surface opposite the groove in the first surface of the second workpiece; and
energy applied, in forming the system, to melt the material of the first workpiece comprises melting at least a portion of the protrusion so that it flows into the groove toward forming the interlocking weld joining the first workpiece to the second workpiece.

13 . The system of claim 7 wherein applying energy, in forming the system, to melt the material of the first workpiece comprises one of applying a laser to melt the material of the first workpiece, applying induction to melt the material of the first workpiece, and applying ultrasonic vibrations to melt the material of the first workpiece.

14 . A system comprising:
a first workpiece comprising a first surface and a second surface opposite the first surface; and a second workpiece comprising a first surface connected by an interlocking weld with the second surface of the first workpiece and having formed therein a groove forming part of the interlocking weld; wherein the system is formed by:
providing the second surface of the first workpiece in contact with the first surface of the second workpiece;
applying energy to, at least one of the first workplace and the second workpiece causing material of the first workpiece to melt, yielding molten material, and wall material of the groove formed in the first surface of the second workplace to soften, yielding softened material; and
allowing or causing the molten material of the first workpiece to flow into the groove of the second workpiece; and
allowing or causing the molten material of the first workpiece and the softened material of the groove of the second workpiece to cool, forming the interlocking weld joining the first workpiece to the second workpiece.

15 . The system of claim 14 wherein the wall material is softened, in forming the system, by the molten material flowing into the groove.

16 . The system of claim 14 where

Assignees

• Gm Global Tech Operations Inc

Inventors

• Fan Hua-Tzu
• Wang Chen-Shih
• Arinez Jorge F
• Smyth Susan M

Classifications

• B32B2310/00

  Treatment by energy or chemical effects · CPC title

• B32B37/04 Primary

  characterised by the partial melting of at least one layer · CPC title

• B29C65/46

  heated by induction · CPC title

• B29C66/72143

  Fibres of discontinuous lengths · CPC title

• B29C65/44

  Joining a heated non plastics element to a plastics element · CPC title