CN102513497B - Rotary riveting die for mounting balancer and method for riveting by use of such rotary riveting die - Google Patents
Rotary riveting die for mounting balancer and method for riveting by use of such rotary riveting die Download PDFInfo
- Publication number
- CN102513497B CN102513497B CN201110414497.8A CN201110414497A CN102513497B CN 102513497 B CN102513497 B CN 102513497B CN 201110414497 A CN201110414497 A CN 201110414497A CN 102513497 B CN102513497 B CN 102513497B
- Authority
- CN
- China
- Prior art keywords
- rivet
- patrix
- forming cavity
- riveting
- upper forming
- 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.)
- Active
Links
Landscapes
- Insertion Pins And Rivets (AREA)
Abstract
The invention discloses a rotary riveting die for mounting balancer and a method. The rotary riveting die comprises an upper die and a lower die; a lower molding cavity concaved downwardly is formed at the upper surface of the lower die, an upper molding cavity concaved upwardly is formed at the lower surface of the upper die; the lower molding cavity is spherical; the bottom surface of the upper molding cavity is a straight line segment, and the side of the upper molding cavity is an arc segment. The method comprises connecting the parts by the rivets, and then riveting by use of the upper die and the lower die. The rotary riveting die of the invention can shorten the deformation time, improve the riveting efficiency, and avoid stress concentration.
Description
Technical field
The present invention relates to revolving riveting mould and utilizing the method for revolving riveting mould and carrying out riveting on riveted joint balancer.
Background technology
Traditional clinching method utilizes the mode of knocking to make rivet end produce plastic deformation, the defect of this clinching method is: be difficult to the distortion controlling rivet end, cause distortion uneven, in addition, because the load be carried on rivet is uneven, therefore, easily cause stress to concentrate, cause fastening insecure phenomenon.For above-mentioned defect, start now to occur utilizing riveter to rivet, riveter is installed and revolves riveting mould, the forming cavity revolving riveting mould is dome shape, when patrix is applied on rivet, easily cause rivet to offset, thus make rivet end same circumferentially deflection inconsistent, cause stress to concentrate, the fastening strength of rivet is reduced.
Summary of the invention
For overcoming above-mentioned technical problem, the invention provides a kind of that and revolving for revolve riveting mould and the utilization of assembling balancer the method that riveting mould carries out riveting.
The technical scheme solved the problems of the technologies described above is: the riveting mould that revolves for assembling balancer comprises counterdie and patrix, and the upper surface of counterdie is formed with the compacted under chamber to lower recess, and the lower surface of patrix is formed with the upper forming cavity upwards caved in; Described compacted under chamber is spheric, and the arc radius through centre of sphere parting face is 2.98-5.75mm, and the chord length corresponding to circular arc is 5.2-10.5mm; Upper forming cavity bottom surface is straightway, the side of upper forming cavity is arc section, and straightway bottom surface is 1.5-2.5mm to the distance of patrix bottom surface, and arc section radius is 1.5-2.5mm, the opening section of upper forming cavity is circular, and the opening diameter of upper forming cavity is 4.5-10mm.
Utilize that to revolve the method step that riveting mould carries out riveting as follows:
(1) by rivet, two parts are linked together, and make the upper and lower side of rivet stretch out parts;
(2) lower end of rivet is placed in compacted under chamber, slow mobile patrix declines, and makes the lower end of rivet be placed in forming cavity;
(3) start patrix, patrix is rotated and produces downward pressure to complete riveted joint.
The invention has the beneficial effects as follows: because upper forming cavity bottom surface is straightway, the side of upper forming cavity is arc section, when rivet upper surface does not touch straightway, the contacting section of rivet upper end and upper forming cavity amasss little, according to formula (wherein, for stress, P is load, and A is sectional area), formula (wherein, be strain, L is the variable after distortion, L
0variable for before distortion) and stress, strain curve known, under same load, sectional area is less, then produced stress is larger, and stress is larger, then strain also larger, and deflection greatly, thus has shortened the time of being out of shape, and improves the efficiency of riveted joint; When the upper surface of rivet contacts with straightway, upper forming cavity has positioning action to rivet, can prevent rivet skew in riveting process, ensure that rivet top and bottom are the same at same circumferentially deflection, reduce the phenomenon that stress is concentrated.
Accompanying drawing explanation
Fig. 1 revolves riveting mould to be installed to structure chart on riveter.
Fig. 2 is the structure chart of patrix.
Fig. 3 is the structure chart of counterdie.
Fig. 4 is the enlarged drawing of A.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
First embodiment.
As shown in Figure 1, riveter comprise mounting platform 100, the column 101 be fixed on mounting platform 100, the transfer gear box 102 can slided on column, the motor 103 be arranged in transfer gear box 102, the output shaft 104 be arranged in transfer gear box 102.
Above-mentioned riveter is provided with and revolves riveting mould, the described riveting mould that revolves comprises counterdie 1, patrix 2 and base 3.Base 3 bottom surface has trapezoid block, and base is installed on mounting platform by trapezoid block, and described counterdie 1 is fixing on the base 3, and described patrix 2 is fixed on output shaft; Counterdie 1 is up-small and down-big truncated cone-shaped, and patrix 2 is up big and down small truncated cone-shaped, to improve the strength and stiffness of counterdie and patrix.As shown in Figure 3, the upper surface of counterdie is formed with the compacted under chamber 11 to lower recess; As shown in Figure 2, the lower surface of patrix 2 is formed with the upper forming cavity 21 upwards caved in; Described compacted under chamber 11 is spheric, and the arc radius R through centre of sphere parting face is 2.98-5.75mm, and in the present embodiment, preferred 2.98mm, the chord length L corresponding to circular arc are 5.2-10.5mm, preferred 5.2mm; As shown in Figure 4, upper forming cavity bottom surface 6 is straightway, and the side 7 of upper forming cavity is arc section, and straightway bottom surface is 1.5-2.5mm to the distance H of patrix bottom surface, in the present embodiment, and preferred 1.5mm; Arc section radius r is 1.5-2.5mm, in the present embodiment, and preferred 1.5mm; Opening 8 cross section of upper forming cavity is circular, and opening 8 diameter of upper forming cavity is 4.5-10mm, preferred 4.5mm.
Utilize that to revolve the method step that riveting mould carries out riveting as follows:
(1) by rivet, two parts are linked together, and make the upper and lower side of rivet stretch out parts.
(2) lower end of rivet is placed in compacted under chamber, slow mobile patrix declines, and makes the lower end of rivet be placed in forming cavity.
(3) start patrix, patrix is rotated and produces downward pressure, in riveting process, the lower end of rivet first with the contacts side surfaces in compacted under chamber, the upper end of rivet first contacts with the arc section of upper forming cavity, and along with pressing down of patrix, lower end and the upper end of rivet, in forming cavity, plastic deformation occurs; When the upper surface that patrix is depressed into rivet contacts with straightway, rivet upper end has been riveted, and the lower end of rivet continues plastic deformation to occur until rivet lower end and compacted under chamber fit like a glove.
In the present embodiment, because upper forming cavity bottom surface is straightway, the side of upper forming cavity is arc section, when rivet upper surface does not touch straightway, the contacting section of rivet upper end and upper forming cavity amasss little, according to formula, (wherein, be stress, P is load, A is sectional area), formula (wherein, for strain, L is the variable after distortion, L
0variable for before distortion) and stress, strain curve known, under same load, sectional area is less, then produced stress is larger, and stress is larger, then strain also larger, and deflection greatly, thus has shortened the time of being out of shape, and improves the efficiency of riveted joint; When the upper surface of rivet contacts with straightway, upper forming cavity has positioning action to rivet, can prevent rivet skew in riveting process, ensure that rivet top and bottom are the same at same circumferentially deflection, reduce the phenomenon that stress is concentrated.
Second embodiment.
As shown in Figure 1, riveter comprise mounting platform 100, the column 101 be fixed on mounting platform 100, the transfer gear box 102 can slided on column, the motor 103 be arranged in transfer gear box 102, the output shaft 104 be arranged in transfer gear box 102.
Above-mentioned riveter is provided with and revolves riveting mould, the described riveting mould that revolves comprises counterdie 1, patrix 2 and base 3.Base 3 bottom surface has trapezoid block, and base is installed on mounting platform by trapezoid block, and described counterdie 1 is fixing on the base 3, and described patrix 2 is fixed on output shaft; Counterdie 1 is up-small and down-big truncated cone-shaped, and patrix 2 is up big and down small truncated cone-shaped, to improve the strength and stiffness of counterdie and patrix.As shown in Figure 3, the upper surface of counterdie is formed with the compacted under chamber 11 to lower recess; As shown in Figure 2, the lower surface of patrix 2 is formed with the upper forming cavity 21 upwards caved in; Described compacted under chamber 11 is spheric, and the arc radius R through centre of sphere parting face is 2.98-5.75mm, and in the present embodiment, preferred 4.64mm, the chord length L corresponding to circular arc are 5.2-10.5mm, preferred 8.5mm; As shown in Figure 4, upper forming cavity bottom surface 6 is straightway, and the side 7 of upper forming cavity is arc section, and straightway bottom surface is 1.5-2.5mm to the distance H of patrix bottom surface, in the present embodiment, and preferred 2mm; Arc section radius r is 1.5-2.5mm, in the present embodiment, and preferred 2mm; Opening 8 cross section of upper forming cavity is circular, and opening 8 diameter of upper forming cavity is 4.5-10mm, preferred 7.5mm.
Utilize that to revolve the method step that riveting mould carries out riveting as follows:
(1) by rivet, two parts are linked together, and make the upper and lower side of rivet stretch out parts.
(2) lower end of rivet is placed in compacted under chamber, slow mobile patrix declines, and makes the lower end of rivet be placed in forming cavity.
(3) start patrix, patrix is rotated and produces downward pressure, in riveting process, the lower end of rivet first with the contacts side surfaces in compacted under chamber, the upper end of rivet contacts prior to the arc section of upper forming cavity, and along with pressing down of patrix, lower end and the upper end of rivet, in forming cavity, plastic deformation occurs; When the upper surface that patrix is depressed into rivet contacts with straightway, rivet upper end has been riveted, and the lower end of rivet continues plastic deformation to occur until rivet lower end and compacted under chamber fit like a glove.
In the present embodiment, because upper forming cavity bottom surface is straightway, the side of upper forming cavity is arc section, when rivet upper surface does not touch straightway, the contacting section of rivet upper end and upper forming cavity amasss little, according to formula, (wherein, be stress, P is load, A is sectional area), formula (wherein, for strain, L is the variable after distortion, L
0variable for before distortion) and stress, strain curve known, under same load, sectional area is less, then produced stress is larger, and stress is larger, then strain also larger, and deflection greatly, thus has shortened the time of being out of shape, and improves the efficiency of riveted joint; When the upper surface of rivet contacts with straightway, upper forming cavity has positioning action to rivet, can prevent rivet skew in riveting process, ensure that rivet top and bottom are the same at same circumferentially deflection, reduce the phenomenon that stress is concentrated.
3rd embodiment.
As shown in Figure 1, riveter comprise mounting platform 100, the column 101 be fixed on mounting platform 100, the transfer gear box 102 can slided on column, the motor 103 be arranged in transfer gear box 102, the output shaft 104 be arranged in transfer gear box 102.
Above-mentioned riveter is provided with and revolves riveting mould, the described riveting mould that revolves comprises counterdie 1, patrix 2 and base 3.Base 3 bottom surface has trapezoid block, and base is installed on mounting platform by trapezoid block, and described counterdie 1 is fixing on the base 3, and described patrix 2 is fixed on output shaft; Counterdie 1 is up-small and down-big truncated cone-shaped, and patrix 2 is up big and down small truncated cone-shaped, to improve the strength and stiffness of counterdie and patrix.As shown in Figure 3, the upper surface of counterdie is formed with the compacted under chamber 11 to lower recess; As shown in Figure 2, the lower surface of patrix 2 is formed with the upper forming cavity 21 upwards caved in; Described compacted under chamber 11 is spheric, and the arc radius R through centre of sphere parting face is 2.98-5.75mm, and in the present embodiment, preferred 5.75mm, the chord length L corresponding to circular arc are 5.2-10.5mm, preferred 10.5mm; As shown in Figure 4, upper forming cavity bottom surface 6 is straightway, and the side 7 of upper forming cavity is arc section, and straightway bottom surface is 1.5-2.5mm to the distance H of patrix bottom surface, in the present embodiment, and preferred 2.5mm; Arc section radius r is 1.5-2.5mm, in the present embodiment, and preferred 2.5mm; Opening 8 cross section of upper forming cavity is circular, and opening 8 diameter of upper forming cavity is 4.5-10mm, preferred 10mm.
Utilize that to revolve the method step that riveting mould carries out riveting as follows:
(1) by rivet, two parts are linked together, and make the upper and lower side of rivet stretch out parts.
(2) lower end of rivet is placed in compacted under chamber, slow mobile patrix declines, and makes the lower end of rivet be placed in forming cavity.
(3) start patrix, patrix is rotated and produces downward pressure, in riveting process, the lower end of rivet first with the contacts side surfaces in compacted under chamber, the upper end of rivet contacts prior to the arc section of upper forming cavity, and along with pressing down of patrix, lower end and the upper end of rivet, in forming cavity, plastic deformation occurs; When the upper surface that patrix is depressed into rivet contacts with straightway, rivet upper end has been riveted, and the lower end of rivet continues plastic deformation to occur until rivet lower end and compacted under chamber fit like a glove.
In the present embodiment, because upper forming cavity bottom surface is straightway, the side of upper forming cavity is arc section, when rivet upper surface does not touch straightway, the contacting section of rivet upper end and upper forming cavity amasss little, according to formula (wherein, for stress, P is load, and A is sectional area), formula
(wherein, be strain, L is the variable after distortion, L
0variable for before distortion) and stress, strain curve known, under same load, sectional area is less, then produced stress is larger, and stress is larger, then strain also larger, and deflection greatly, thus has shortened the time of being out of shape, and improves the efficiency of riveted joint; When the upper surface of rivet contacts with straightway, upper forming cavity has positioning action to rivet, can prevent rivet skew in riveting process, ensure that rivet top and bottom are the same at same circumferentially deflection, reduce the phenomenon that stress is concentrated.
Claims (7)
1. revolve riveting mould for what assemble balancer, comprise counterdie and patrix, the upper surface of counterdie is formed with the compacted under chamber to lower recess, and the lower surface of patrix is formed with the upper forming cavity upwards caved in; Described compacted under chamber is spheric, it is characterized in that: the arc radius through centre of sphere parting face is 2.98-5.75mm, and the chord length corresponding to circular arc is 5.2-10.5mm; Upper forming cavity bottom surface is straightway, the side of upper forming cavity is arc section, and straightway bottom surface is 1.5-2.5mm to the distance of patrix bottom surface, and arc section radius is 1.5-2.5mm, the opening section of upper forming cavity is circular, and the opening diameter of upper forming cavity is 4.5-10mm.
2. according to claim 1ly revolve riveting mould for what assemble balancer, it is characterized in that: counterdie is up-small and down-big truncated cone-shaped, patrix is up big and down small truncated cone-shaped.
3. according to claim 1 and 2ly revolve riveting mould for what assemble balancer, it is characterized in that: be fixed with base in the lower end of counterdie.
4. utilize the method for revolving riveting mould and carrying out riveting, it is characterized in that: revolve riveting mould and comprise counterdie and patrix, the upper surface of counterdie is formed with the compacted under chamber to lower recess, and the lower surface of patrix is formed with the upper forming cavity upwards caved in; Described compacted under chamber is spheric, and the arc radius wherein through centre of sphere parting face is 2.98-5.75mm, and the chord length corresponding to circular arc is 5.2-10.5mm; Upper forming cavity bottom surface is straightway, the side of upper forming cavity is arc section, and straightway bottom surface is 1.5-2.5mm to the distance of patrix bottom surface, and arc section radius is 1.5-2.5mm, the opening section of upper forming cavity is circular, and the opening diameter of upper forming cavity is 4.5-10mm;
Utilize that to revolve the method step that riveting mould carries out riveting as follows:
(1) by rivet, two parts are linked together, and make the upper and lower side of rivet stretch out parts;
(2) lower end of rivet is placed in compacted under chamber, slow mobile patrix declines, and makes the lower end of rivet be placed in forming cavity;
(3) start patrix, patrix is rotated and produces downward pressure to complete riveted joint.
5. the method that riveting mould carries out riveting is revolved in utilization according to claim 4, it is characterized in that: when carrying out above-mentioned steps (3), the lower end of rivet first with the contacts side surfaces in compacted under chamber, the upper end of rivet first contacts with the arc section of upper forming cavity, along with pressing down of patrix, there is plastic deformation in lower end and the upper end of rivet in forming cavity; When the upper surface that patrix is depressed into rivet contacts with straightway, rivet upper end has been riveted, and the lower end of rivet continues plastic deformation to occur until rivet lower end and compacted under chamber fit like a glove.
6. the method that riveting mould carries out riveting is revolved in utilization according to claim 4, it is characterized in that: counterdie is up-small and down-big truncated cone-shaped, and patrix is up big and down small truncated cone-shaped.
7. the method that riveting mould carries out riveting is revolved in the utilization according to claim 4 or 5, it is characterized in that: be fixed with base in the lower end of counterdie.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110414497.8A CN102513497B (en) | 2011-12-13 | 2011-12-13 | Rotary riveting die for mounting balancer and method for riveting by use of such rotary riveting die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110414497.8A CN102513497B (en) | 2011-12-13 | 2011-12-13 | Rotary riveting die for mounting balancer and method for riveting by use of such rotary riveting die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102513497A CN102513497A (en) | 2012-06-27 |
| CN102513497B true CN102513497B (en) | 2015-01-14 |
Family
ID=46284707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110414497.8A Active CN102513497B (en) | 2011-12-13 | 2011-12-13 | Rotary riveting die for mounting balancer and method for riveting by use of such rotary riveting die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102513497B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107737861A (en) * | 2017-11-14 | 2018-02-27 | 宣城市君诚汽车零部件有限公司 | A kind of riveter |
| CN107838359A (en) * | 2017-11-23 | 2018-03-27 | 苏州听毅华环保科技有限公司 | A kind of snap rivet drift |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB142296A (en) * | 1919-05-02 | 1920-05-06 | James Walter Muir Hall | Improvements in and relating to dies and like tools for riveting, caulking, stamping and other purposes |
| DE1128370B (en) * | 1958-07-30 | 1962-04-19 | Ernst Zur Linden | Process for the production of cutting tools which have been subjected to machining and then heat-treated |
| US3561102A (en) * | 1968-09-25 | 1971-02-09 | Champion Commercial Ind Inc | Process of forming a cold driven riveted joint |
| DE2733119A1 (en) * | 1977-07-22 | 1979-02-01 | Kloeckner Moeller Elektrizit | Rotatable head for setting rivets - uses rocking motion of inclined insert to produce convex rivet head by axial pressure |
| SU1750841A1 (en) * | 1990-01-30 | 1992-07-30 | С Ф.Рикман и В.П.Рубеко | Arrangement for expanding rivet heads |
| NL9100286A (en) * | 1991-02-19 | 1992-09-16 | Michiel Pieter Brandts | METHOD, SNAPPER, NAIL, ETC. FOR CONNECTING A PLATE PACKAGE TOGETHER AL-ALLOY RIVETS. |
| JPH08117896A (en) * | 1994-10-25 | 1996-05-14 | Honda Motor Co Ltd | Caulking method |
| CA2415669A1 (en) * | 2003-01-07 | 2004-07-07 | Gbm Rivet & Fasteners Inc. | Riveting tool and method of its use |
| CN101879573A (en) * | 2009-05-05 | 2010-11-10 | 烟台金王礼品有限公司 | Die special for riveting |
| CN201676992U (en) * | 2010-03-29 | 2010-12-22 | 新昌县科贸实业有限公司 | Riveting machine |
-
2011
- 2011-12-13 CN CN201110414497.8A patent/CN102513497B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102513497A (en) | 2012-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100493765C (en) | Forging method of large scale conical barrel | |
| CN203578591U (en) | Non-rivet riveting device for improving quality of riveted joint | |
| CN105728575A (en) | Double-punch combination multi-degree-of-freedom flat bottom non-rivet plastic connection technology for light plate materials | |
| CN105382168A (en) | Multidirectional die-forging forming die and forming method of valve forge part with main flange | |
| CN103331575B (en) | A kind of moulding process of two-way tubular boss wheel hub | |
| CN102601248A (en) | Riveting method of metal sheets | |
| CN105437537A (en) | Assembling method for airfoil total composite transonic flutter model | |
| CN102513497B (en) | Rotary riveting die for mounting balancer and method for riveting by use of such rotary riveting die | |
| CN101879552A (en) | Stamping and flanging die and method for flanging with die | |
| CN105312470A (en) | Composite die for forging automobile crankshaft | |
| CN102527791A (en) | Main pipeline brake forming process and device of equipment in nuclear power station | |
| CN103658476B (en) | A kind of thick-wall hollow forging integral forming method of special-shaped angle head cylindrical band boss | |
| CN103706745A (en) | Manufacturing method of damping shaft sleeve | |
| CN203155846U (en) | Motor shell stamping forming die | |
| CN106341011A (en) | Circular compression method for motor enclosure | |
| CN204396634U (en) | Produce the mould of automobile front wall baffle sill | |
| CN203945098U (en) | A kind of frock press-fiting for cover in injection line and distributing pipe | |
| CN207325778U (en) | A kind of coining attachment device of ultrasonic wave added | |
| CN102172716B (en) | Heavy truck front axle bending die | |
| CN203460639U (en) | Triangular automobile chassis arm | |
| CN102610981A (en) | Positioning and press-fit composite die | |
| CN203448498U (en) | Punching device of temperature controller of electric cooker | |
| CN202192167U (en) | Cold stamping die with flanging mechanism | |
| CN201922405U (en) | Compound pressure head integrating press-mounting and riveting | |
| CN202045278U (en) | Improved riveting mould |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510800 Guangdong province Guangzhou Huadu Auto City Road on the north side of city Patentee after: Guangzhou Xinbang intelligent equipment Limited by Share Ltd Address before: 510800 Guangdong province Guangzhou Huadu Auto City Road on the north side of city Patentee before: Guangzhou Xinbang Automobile Equipment Manufacturing Co., Ltd. |