US1721263A - Method and apparatus for riveting - Google Patents
Method and apparatus for riveting Download PDFInfo
- Publication number
- US1721263A US1721263A US214296A US21429627A US1721263A US 1721263 A US1721263 A US 1721263A US 214296 A US214296 A US 214296A US 21429627 A US21429627 A US 21429627A US 1721263 A US1721263 A US 1721263A
- Authority
- US
- United States
- Prior art keywords
- rivet
- work
- riveting
- electrode
- heading
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title description 11
- 238000010438 heat treatment Methods 0.000 description 7
- 244000309464 bull Species 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004080 punching Methods 0.000 description 2
- 241000167854 Bourreria succulenta Species 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- 235000019693 cherries Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/02—Riveting procedures
- B21J15/08—Riveting by applying heat, e.g. to the end parts of the rivets to enable heads to be formed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/02—Riveting procedures
- B21J15/025—Setting self-piercing rivets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/16—Drives for riveting machines; Transmission means therefor
- B21J15/18—Drives for riveting machines; Transmission means therefor operated by air pressure or other gas pressure, e.g. explosion pressure
-
- 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
- Y10T29/49833—Punching, piercing or reaming part by surface of second part
-
- 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
- Y10T29/49915—Overedge assembling of seated part
Definitions
- the present invention relates to methods of riveting and deals more particularly with such methods when applied in service requiring rapid work and an unfailing uniformity of excellence of the finished product.
- This invention deals with thesetwo factors and an object thereof is to provide a method and apparatus for riveting whereby the handling of the piece is reduced appreciably thereby cutting down the expense of the total operation. It is proposed to eliminate the step of drilling and, instead, force the rivet through the pieces to be joined while the latter are highlyiheated.
- a further object lies in preserving the original quantity of metal in the pieces, as Well as forcingit under the rivet heads to cause it to, fill all available space thereunder. In this manner the maximum strength of the joint is obtained as well as utilizing. all iof the metal in the pieces to be joined. l i
- Figure 1 is a view in elevation, partly in section, showing a device in which the invention has been embodied in a known form of bull press, the work being in place, and
- Figure 2 is a sectional view taken on line 2-2 of Figure l and looking in the direction of the arrows.
- Figure 3 is a view in section taken on line 33 of Figure 2 and looking, in the direction of the arrows. j
- a indicates a bull press of the usual form provided with a device I) forapplying' power to the riveting plunger.
- the power source is shown with a cylinder provided with a piston adapted to be moved under air pres sure and controlled by hand lever b.
- connecting rod 19 is pivotally connected to a link 6 which is pivoted at 6 upon the stationary portion of the press.
- a suitable plunger a is slidably carried in the upper head of the bull press a and is connected, through link of, to the pivot point of link 6 and connecting rod 5 From the above description, it will be apparent that outward movement of connecting rod 6 will cause a downward movement of plunger a and the a desired riveting operation is thereby accomplished.
- v j j A slot a is provided in the bearing for the plunger in the upper head of the bull press, and a pin at carried by the plunger a moves in this slot.
- a device for' heatingthe work and riveting includes a bracket 6, carrying, pivotally, a guide member e"for an electrode holder 6
- a forked lever e is pivoted with the guide 6 uponthe bracket eandis formed with a rearwardly extending cam arm etwhich is normally disposed in thepath of movement of the pin a
- the electrode holder 6 is provided with a head a carrying diametrically disposed rollers e. Springs (2 aid the force of gravity in restoringrthe electrode andrelated parts 'to the normal position shown in full lines in Figure 2.
- the sta- V tionary portion a of the bull press a is connected to a suitable source of electricity 9 which, preferably, is of low voltage and capable of supplying an extremely high current.
- the electrode f is also connected to the other side of this current supply and insulated from the conducting parts of the mechanism which are carried by the press.
- the method of riveting comprising, placing the work in the desired position, placing the rivet over the work in a position to be forced into place, simultaneously heating the rivet and work to different tem peratures, forcing the rivet through the work,.and heading the rivet to compress the work between the heads thereof.
- a device of the character described comprising means for holding the work, means for applying heat thereto to bring it to a working temperature, means for heating the rivet, means for forcing the rivet through the work, and means for heading the rivet.
- a device of the character described comprising means for holding the work, means for applying heat thereto to bring it to a working temperature, means for heating the rivet to a temperature lower than that of the work, means for forcing the rivet through the work and means for heading the rivet.
- a device of the character described comprisingmeans for holding the work, means for applying heat thereto to bring it to a working temperature, means for heating the rivet simultaneously, means for forcing the rivet through the. work and means for heading the rivet.
- a device of the character described comprising means for holding the work, an electrode, means for placing the electrode over the portion of the work to be riveted and engage the rivet simultaneously, means for passing current from the electrode through the work and rivet to heat them to the desired temperatures, means for forcing the rivet through the work and means'for heading the rivet.
- a device of the character described comprising means for holding thework, an electrode, means'for placing the electrode over theportion of the work to be riveted and engage the rivet simultaneously, the
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Description
July 16, 1929. I 5, F, TAPMAN 1,721,263
METHOD ND APPARATUS FOR RIVETING Filed Aug. 20, 1927 2 sneetsshez 1 Fig.1
4 mm A IIIIIIIIflI/IIIIIIIIIIIIIIIIIIIII c July 16, 1929. s. F. TAPMAN 1.721,263
' METHOD AND APPARATUS FOR RIVETING Filed Aug. 20, 1927 2 Sheets-Sheet 2 Patented July 16, 1929.
r 1,721,263 "UNITEDL S PA E O SAMUEL I TAPMAN, OF JAMAICA, NEW YORK.
METHOD AND'APPARATUS FOR RIVETING.
Application filed August 20, 1927. Serial No. 214,296.
The present invention relates to methods of riveting and deals more particularly with such methods when applied in service requiring rapid work and an unfailing uniformity of excellence of the finished product.
WVhere a greatamount of rivetingis to be done theexpense of handling the materials in the drilling or punching, and riveting operationsisa considerable proportion of the total cost of the finished work and many forms of punches, drills and riveters have been designed in an effort to reduce the time required for doing the work. As a matter requiring further consideration, the strength of the joint under shearing stresses requires that the piece be designed with a suflicient quantity ofmetal to compensate forthat removed in the, drilling or punching operations. j
i This invention deals with thesetwo factors and an object thereof is to provide a method and apparatus for riveting whereby the handling of the piece is reduced appreciably thereby cutting down the expense of the total operation. It is proposed to eliminate the step of drilling and, instead, force the rivet through the pieces to be joined while the latter are highlyiheated.
A further object lies in preserving the original quantity of metal in the pieces, as Well as forcingit under the rivet heads to cause it to, fill all available space thereunder. In this manner the maximum strength of the joint is obtained as well as utilizing. all iof the metal in the pieces to be joined. l i
Other objects of the invention will be apparent as the description proceeds and reference will now be had, for amore detailed description of the invention, to the accompanying drawings wherein Figure 1 is a view in elevation, partly in section, showing a device in which the invention has been embodied in a known form of bull press, the work being in place, and
r the means for vheating it bearing there-- against to bring it to the desired tempera ture. t
Figure 2 is a sectional view taken on line 2-2 of Figure l and looking in the direction of the arrows. I
Figure 3 is a view in section taken on line 33 of Figure 2 and looking, in the direction of the arrows. j
Referring to the drawings a indicates a bull press of the usual form provided with a device I) forapplying' power to the riveting plunger. In this instance, the power source is shown with a cylinder provided with a piston adapted to be moved under air pres sure and controlled by hand lever b. A
connecting rod 19 is pivotally connected to a link 6 which is pivoted at 6 upon the stationary portion of the press. A suitable plunger a is slidably carried in the upper head of the bull press a and is connected, through link of, to the pivot point of link 6 and connecting rod 5 From the above description, it will be apparent that outward movement of connecting rod 6 will cause a downward movement of plunger a and the a desired riveting operation is thereby accomplished. v j j A slot a is provided in the bearing for the plunger in the upper head of the bull press, and a pin at carried by the plunger a moves in this slot.
In securing the ipieces together by means i of the rivet, the ormer are placed in the proper position asfshown in Figure 1 and indicated at 0. A rivet (Z is placed at the head of the plunger a and, when the work has been heated to the proper temperature, the plunger is moved downwardly to force the rivet through the highly heated work.
A device for' heatingthe work and riveting includes a bracket 6, carrying, pivotally, a guide member e"for an electrode holder 6 A forked lever e is pivoted with the guide 6 uponthe bracket eandis formed with a rearwardly extending cam arm etwhich is normally disposed in thepath of movement of the pin a The electrode holder 6 is provided with a head a carrying diametrically disposed rollers e. Springs (2 aid the force of gravity in restoringrthe electrode andrelated parts 'to the normal position shown in full lines in Figure 2. These rollers engage the upper faces of the forked port-ions of lever 6 and permit relative movement between ,the head 6 and forked lever 6 when the latter is moved pivotally from the descending plunger The sta- V tionary portion a of the bull press a is connected to a suitable source of electricity 9 which, preferably, is of low voltage and capable of supplying an extremely high current. The electrode f is also connected to the other side of this current supply and insulated from the conducting parts of the mechanism which are carried by the press.
When the electrode f is moved under influence of the spring e into engagement with the work 0 and the. rivet d, the circuit is closed through the work and rivet, and the current flow therethrough heats them to the desired temperature. Due to the fact that the area of contact between the electrode andrivet d is relatively small, a proportionately smaller amount of current will pass through the rivet and, as a consequence, the rivet will not be heated as highly as the work. The time of contact of the electrode with the rivet and work is designed to be sufficiently long to bring the work to an eX-- tremely hightemperature, at which the rivet may be forced through with little difficulty. The heating of the rivet, during this time, is suflicient to bring it to a cherry heat-and permit it to be headed in the proper manner as it is forced through the work.
' rivet when the latter is forced through the former and headed, the metal around the rivet will be forced into intimate contact with every available portion'thereof. This increases the strength of the joint against shear and the resulting work is much stronger due to this fact, as well as the fact that no metal has been removed from the work. i
The operation described above can be performed in less than six seconds and it will be quite apparent that a great saving results in the handling of the work, since it is unnecessary to perform the drilling operation. Theinvention is not to be construed as limited to the form of apparatus shown and described herein, since many constructions may be provided to perform the steps in the method embodied herein, and the specific mechanism described has been used merely as an example of one form in order that the invention might be described more clearly.
I claim as my invention:
1. The method of riveting comprising,
placing the workin the desired position,
that of the work, forcing the rivet through the work, and heading the rivet.
3. The method of riveting comprising,
placing the work in the desired position,
heating it to a. working temperature, heating the rivet simultaneously, forcing the rivet through the work, and heading the rivet.
4. The method of riveting comprising, placing the work in the desired position, placing the rivet over the work in a position to be forced into place, simultaneously heating the rivet and work to different tem peratures, forcing the rivet through the work,.and heading the rivet to compress the work between the heads thereof.
5. A device of the character described comprising means for holding the work, means for applying heat thereto to bring it to a working temperature, means for heating the rivet, means for forcing the rivet through the work, and means for heading the rivet.
6. A device of the character described comprising means for holding the work, means for applying heat thereto to bring it to a working temperature, means for heating the rivet to a temperature lower than that of the work, means for forcing the rivet through the work and means for heading the rivet.
7. A device of the character described comprisingmeans for holding the work, means for applying heat thereto to bring it to a working temperature, means for heating the rivet simultaneously, means for forcing the rivet through the. work and means for heading the rivet.
8. A device of the character described comprising means for holding the work, an electrode, means for placing the electrode over the portion of the work to be riveted and engage the rivet simultaneously, means for passing current from the electrode through the work and rivet to heat them to the desired temperatures, means for forcing the rivet through the work and means'for heading the rivet.
9. A device of the character described comprising means for holding thework, an electrode, means'for placing the electrode over theportion of the work to be riveted and engage the rivet simultaneously, the
area of the rivet engaged by the electrode being smaller than the area of the work engaged thereby, means for passing current from the electrode through the work and rivet, a smaller quantity passing through the rivet than through the work due to the different contact areas thereof, means for forcing the rivet through the work and means for heading the rivet.
This specification signed this 18th day of August, A. D. 1927.
SAMUEL F. TAPMAN.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US214296A US1721263A (en) | 1927-08-20 | 1927-08-20 | Method and apparatus for riveting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US214296A US1721263A (en) | 1927-08-20 | 1927-08-20 | Method and apparatus for riveting |
Publications (1)
Publication Number | Publication Date |
---|---|
US1721263A true US1721263A (en) | 1929-07-16 |
Family
ID=22798537
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US214296A Expired - Lifetime US1721263A (en) | 1927-08-20 | 1927-08-20 | Method and apparatus for riveting |
Country Status (1)
Country | Link |
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US (1) | US1721263A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3878356A (en) * | 1973-09-27 | 1975-04-15 | Cleveland E Roye | Diffusion band riveting method |
US6417490B1 (en) * | 1997-11-17 | 2002-07-09 | Technische Universitaet Dresden | Method and device for thermally supporting mechanical joints |
US6684479B2 (en) * | 2001-08-22 | 2004-02-03 | General Motors Corporation | Method and apparatus for clinching metal sheets |
-
1927
- 1927-08-20 US US214296A patent/US1721263A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3878356A (en) * | 1973-09-27 | 1975-04-15 | Cleveland E Roye | Diffusion band riveting method |
US6417490B1 (en) * | 1997-11-17 | 2002-07-09 | Technische Universitaet Dresden | Method and device for thermally supporting mechanical joints |
US6684479B2 (en) * | 2001-08-22 | 2004-02-03 | General Motors Corporation | Method and apparatus for clinching metal sheets |
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