GB2579609A - Improved caulking joint - Google Patents
Improved caulking joint Download PDFInfo
- Publication number
- GB2579609A GB2579609A GB1819904.2A GB201819904A GB2579609A GB 2579609 A GB2579609 A GB 2579609A GB 201819904 A GB201819904 A GB 201819904A GB 2579609 A GB2579609 A GB 2579609A
- Authority
- GB
- United Kingdom
- Prior art keywords
- caulking
- joint
- grooves
- piece
- caulking joint
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K25/00—Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
A caulking joint between a first 10 and a second 20 part. The joint is made with a caulking tool that cuts out a piece of material 21 from the second part and presses it upon a contact area of the first part. The contact area of the first part has a pattern of grooves, a and b, upon which said piece of material is pressed upon. The grooves may be circular and concentric (a, figure 5), linear and parallel, continuous or interrupted.
Description
Description
Improved caulking joint The present invention relates to an improved caulking joint.
Caulking operation is an advanced process used to obtain permanent assemblies by tightly pressing a piece of material around another to avoid their relative movement. Usually, two parts are placed on top of each other and a tool (the caulking tool) deforms one of them to create such a caulking joint. As a rule, the joined parts need to withstand high forces or pressures. Under high forces, the joined parts may slide against each other, the deformed part is pushed aside or pulled away, breaking from the rest and the joint fails: either does not seal anymore or simply bursts.
For this reason, the technical problem to be solved is how to increase the force or pressure needed to separate the parts out 20 of joint, without introducing significant changes of geometries or process.
A main object of the present invention is to increase the friction or adhesion between the joint parts.
According to the invention, this object is achieved by the subject matter of the independent claim, namely an improved caulking joint.
Further advantageous embodiments are the subject matter of the dependent claims.
The present invention provides an improved caulking joint between a first part and a second part, the joint being performed by means of a caulking tool that cuts out a piece of material of second part and presses it upon a contact area of first part, wherein said contact area of first part has a pattern of grooves upon which said piece of material is pressed upon.
The main advantage of the invention is that a more reliable assembly is obtained: it can withstand up to 40% higher forces or pressures. In addition, manufacturing costs and timing are minimally influenced, while the assembling process, materials and tools does not change.
Further special features and advantages of the present invention can be taken from the following description of advantageous embodiment by way of the accompanying drawings, whereby: - Fig. 1 illustrates a usual caulking process (prior art), namely the preparing step; - Fig. 2 represents the actual caulking operation; - Fig. 3 represents the assembly obtained by caulking; -Fig. 4 shows a graphic illustration of a relationship between displacement depending on tear-out force; - Fig. 5 shows an embodiment of an improved caulking joint according to the invention; - Fig. 6 shows a detail of a caulking joint from Fig. 5.
Referring now to Fig. 1, it presents a usual caulking process, as it is known from prior art: in a preparing step, a caulking tool is ready to cut out a piece of material of a first part and to press it upon a second part (which, in this case, is a closing cover component of a hydraulic system, therefore subject to force and/or pressure).
Fig. 2 shows the actual caulking operation, when the cut piece reaches the second part on a contact area, being pressed by the caulking tool; Fig. 3 illustrates that finally, the caulking tool is pulled back and the assembly is finished.
Fig. 4 shows a graphic illustration of a relationship between displacement depending on tear-out force, at different friction values; it is clearly visible that, for a higher friction, a higher force would be needed to get the same displacement; therefore, the need to increase the friction or adhesion between parts.
Figs. 5 and 6 illustrate an embodiment of the improved caulking joint, according to invention. According to this particular embodiment, a first part 10 subject to caulking, namely a closing cover, rests on a shoulder of a second part 20 subject to caulking, in this case a valve support. First part 10 has an upper side provided with a contact area a that is not smooth, but patterned with circular, concentric grooves b; a concentric pattern aids the sealing function of the joint. Said grooves b are continuous, for example; obviously, the pattern can be different (linear instead of circular; parallel instead of concentric; interrupted instead of continuous, in order to prevent sliding), adapted to the shape of second part 20. A caulking tool I acts upon the second part 20 and cuts a piece of material 21 out of it, which piece of material 21 is then pressed by the caulking tool T upon patterned contact area a. Circular, concentric grooves b provide additional contact area to adhere to for piece of material 21, as it is more visible in Fig. 6.
However, no matter the pattern adopted, a more rigid assembly is 30 obtained, without changing the shape of the involved parts; the global friction of the improved caulking joint increases without changing materials of the process itself.
While certain embodiments of the present invention have been described in detail, those familiar with the art to which this invention relates will recognize various alternative designs and embodiments for practicing the invention as defined by the following claims.
List of reference signs 10 First part Second part 21 Piece of material a Contact area b Grooves T Caulking tool
Claims (5)
- Patent claims 1. Improved caulking joint between a first part and a second part, said joint being performed by means of a caulking tool that cuts out a piece of material of second part and presses it upon a contact area of first part, characterized by that said contact area of first part has a pattern of grooves upon which said piece of material is pressed upon.
- 2. Improved caulking joint according to claim 1, characterized by that said grooves are circular and concentric.
- 3. Improved caulking joint according to claim 1, characterized by that said grooves are linear and parallel.
- 4. Improved caulking joint according to claim 1, characterized by that said grooves are continuous.
- 5. Improved caulking joint according to claim 1, characterized 20 by that said grooves are interrupted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1819904.2A GB2579609A (en) | 2018-12-06 | 2018-12-06 | Improved caulking joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1819904.2A GB2579609A (en) | 2018-12-06 | 2018-12-06 | Improved caulking joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201819904D0 GB201819904D0 (en) | 2019-01-23 |
| GB2579609A true GB2579609A (en) | 2020-07-01 |
Family
ID=65029913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1819904.2A Withdrawn GB2579609A (en) | 2018-12-06 | 2018-12-06 | Improved caulking joint |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2579609A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55147434A (en) * | 1980-04-07 | 1980-11-17 | Hitachi Ltd | Coupling structure of two members |
| GB2059838A (en) * | 1979-10-05 | 1981-04-29 | Hitachi Ltd | Joining two metal members |
| JPH08257653A (en) * | 1995-03-17 | 1996-10-08 | Kyoshin Seiki Kk | Method for joining metallic parts |
| EP2554289A1 (en) * | 2010-03-26 | 2013-02-06 | Keihin Seimitsu Kogyo Co., Ltd | Metal component coupling structure and device |
| DE102015202807A1 (en) * | 2015-02-17 | 2016-08-18 | Em-Motive Gmbh | Method for axially fixing a rotor active part on a rotor carrier of an electric machine and correspondingly manufacturable rotor |
| WO2016189226A1 (en) * | 2015-05-22 | 2016-12-01 | Valeo Systemes De Controle Moteur | Method for immobilizing two components |
-
2018
- 2018-12-06 GB GB1819904.2A patent/GB2579609A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2059838A (en) * | 1979-10-05 | 1981-04-29 | Hitachi Ltd | Joining two metal members |
| JPS55147434A (en) * | 1980-04-07 | 1980-11-17 | Hitachi Ltd | Coupling structure of two members |
| JPH08257653A (en) * | 1995-03-17 | 1996-10-08 | Kyoshin Seiki Kk | Method for joining metallic parts |
| EP2554289A1 (en) * | 2010-03-26 | 2013-02-06 | Keihin Seimitsu Kogyo Co., Ltd | Metal component coupling structure and device |
| DE102015202807A1 (en) * | 2015-02-17 | 2016-08-18 | Em-Motive Gmbh | Method for axially fixing a rotor active part on a rotor carrier of an electric machine and correspondingly manufacturable rotor |
| WO2016189226A1 (en) * | 2015-05-22 | 2016-12-01 | Valeo Systemes De Controle Moteur | Method for immobilizing two components |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201819904D0 (en) | 2019-01-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |