CN102513497A - 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
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- CN102513497A CN102513497A CN2011104144978A CN201110414497A CN102513497A CN 102513497 A CN102513497 A CN 102513497A CN 2011104144978 A CN2011104144978 A CN 2011104144978A CN 201110414497 A CN201110414497 A CN 201110414497A CN 102513497 A CN102513497 A CN 102513497A
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- rivet
- patrix
- forming cavity
- last forming
- counterdie
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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 riveting mould that revolves that the present invention relates to rivet on the balancer revolves the method that the riveting mould is riveted with utilizing.
Background technology
Traditional clinching method is to utilize the mode of knocking to make rivet end produce plastic deformation; The defective of this clinching method is: be difficult to control the distortion of rivet end, cause distortion inhomogeneous, in addition; Because the load that is carried on the rivet is inhomogeneous; Therefore, cause that easily stress is concentrated, cause fastening insecure phenomenon.To above-mentioned defective, begin now to occur utilizing riveter to rivet, on riveter, install and revolve the riveting mould; The forming cavity that revolves the riveting mould is dome shape; When patrix affacts on the rivet, cause rivet skew easily, thereby make rivet end on same circumference deflection inconsistent; Cause that stress is concentrated, the fastening strength of rivet is reduced.
Summary of the invention
For overcoming above-mentioned technical problem, the invention provides a kind of that be used to assemble balancer revolve the riveting mould and the method that the riveting mould is riveted is revolved in utilization.
The technical scheme that solves the problems of the technologies described above is: the riveting mould that revolves that is used to assemble 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 upwards last forming cavity of depression; Described compacted under chamber is a sphere shape, and the arc radius that passes centre of sphere parting face is 2.98-5.75mm, and the pairing chord length of circular arc is 5.2-10.5mm; Last forming cavity bottom surface is a straightway; The side of last forming cavity is an arc section, and the straightway bottom surface is 1.5-2.5mm to the distance of patrix bottom surface, and the arc section radius is 1.5-2.5mm; The opening section of last forming cavity is circular, and the opening diameter of last forming cavity is 4.5-10mm.
It is following that the method step that the riveting mould rivets is revolved in utilization:
(1) through rivet two parts is linked together, and make the upper and lower side of rivet stretch out parts;
(2) lower end with rivet places the compacted under chamber, slowly moves patrix and descends, and makes the lower end of rivet place forming cavity;
(3) start patrix, make the patrix rotation and produce downward pressure and accomplish riveted joint.
The invention has the beneficial effects as follows: because last forming cavity bottom surface is a straightway, the side of last forming cavity is an arc section, when the rivet upper surface does not touch straightway; The rivet upper end is long-pending little with the contacting section of last forming cavity, (wherein, is stress according to formula; P is a load, and A is a sectional area), formula (wherein, is strain; L is the variable after being out of shape, L
0Variable before being to be out of shape) can know that with stress, strain curve under same load, sectional area is more little, the stress that is then produced is big more, and stress is big more, and then strain is also big more, and deflection is big, thereby has shortened the time of distortion, has improved the efficient of riveting; When the upper surface of rivet contacted with straightway, last forming cavity had positioning action to rivet, can prevent rivet skew in the riveted joint process, guaranteed that rivet top and bottom deflection on same circumference is the same, had reduced the phenomenon that stress is concentrated.
Description of drawings
Fig. 1 revolves the riveting mould to be installed to the structure chart on the 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.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is further elaborated.
First embodiment.
As shown in Figure 1, riveter comprises mounting platform 100, be fixed on column 101 on the mounting platform 100, can be in the transfer gear box of sliding on the column 102, be installed in motor 103 on the transfer gear box 102, be installed in the output shaft 104 on the transfer gear box 102.
On above-mentioned riveter, be equipped with and revolve the riveting mould, the described riveting mould that revolves comprises counterdie 1, patrix 2 and base 3.Base 3 bottom surfaces have trapezoid block, and base is installed on the mounting platform through trapezoid block, and described counterdie 1 is fixed on the base 3, and described patrix 2 is fixed on the 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 upwards last forming cavity 21 of depression; Described compacted under chamber 11 is a sphere shape, and the arc radius R that passes centre of sphere parting face is 2.98-5.75mm, in this embodiment, and preferred 2.98mm, the pairing chord length L of circular arc is 5.2-10.5mm, preferred 5.2mm; As shown in Figure 4, last forming cavity bottom surface 6 is a straightway, and the side 7 of last forming cavity is an arc section, and the straightway bottom surface is 1.5-2.5mm to the distance H of patrix bottom surface, in this embodiment, and preferred 1.5mm; The arc section radius r is 1.5-2.5mm, in this embodiment, and preferred 1.5mm; Opening 8 cross sections of last forming cavity are circular, and opening 8 diameters of last forming cavity are 4.5-10mm, preferred 4.5mm.
It is following that the method step that the riveting mould rivets is revolved in utilization:
(1) through rivet two parts is linked together, and make the upper and lower side of rivet stretch out parts.
(2) lower end with rivet places the compacted under chamber, slowly moves patrix and descends, and makes the lower end of rivet place forming cavity.
(3) start patrix, make the patrix rotation and produce downward pressure, in the riveted joint process; The lower end of rivet at first with the contacts side surfaces in compacted under chamber; The upper end of rivet contacts with the arc section of last forming cavity earlier, and along with pressing down of patrix, plastic deformation takes place in forming cavity for the lower end of rivet and upper end; When the upper surface that patrix is depressed into rivet contacted with straightway, the riveted joint of rivet upper end was accomplished, and plastic deformation is continued to take place till rivet lower end and compacted under chamber fit like a glove in the lower end of rivet.
In this embodiment, because last forming cavity bottom surface is a straightway, the side of last forming cavity is an arc section; When the rivet upper surface did not touch straightway, the rivet upper end was long-pending little with the contacting section of last forming cavity, according to formula (wherein; Be stress, P is a load, and A is a sectional area), formula (wherein; Be strain, L is the variable after being out of shape, L
0Variable before being to be out of shape) can know that with stress, strain curve under same load, sectional area is more little, the stress that is then produced is big more, and stress is big more, and then strain is also big more, and deflection is big, thereby has shortened the time of distortion, has improved the efficient of riveting; When the upper surface of rivet contacted with straightway, last forming cavity had positioning action to rivet, can prevent rivet skew in the riveted joint process, guaranteed that rivet top and bottom deflection on same circumference is the same, had reduced the phenomenon that stress is concentrated.
Second embodiment.
As shown in Figure 1, riveter comprises mounting platform 100, be fixed on column 101 on the mounting platform 100, can be in the transfer gear box of sliding on the column 102, be installed in motor 103 on the transfer gear box 102, be installed in the output shaft 104 on the transfer gear box 102.
On above-mentioned riveter, be equipped with and revolve the riveting mould, the described riveting mould that revolves comprises counterdie 1, patrix 2 and base 3.Base 3 bottom surfaces have trapezoid block, and base is installed on the mounting platform through trapezoid block, and described counterdie 1 is fixed on the base 3, and described patrix 2 is fixed on the 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 upwards last forming cavity 21 of depression; Described compacted under chamber 11 is a sphere shape, and the arc radius R that passes centre of sphere parting face is 2.98-5.75mm, in this embodiment, and preferred 4.64mm, the pairing chord length L of circular arc is 5.2-10.5mm, preferred 8.5mm; As shown in Figure 4, last forming cavity bottom surface 6 is a straightway, and the side 7 of last forming cavity is an arc section, and the straightway bottom surface is 1.5-2.5mm to the distance H of patrix bottom surface, in this embodiment, and preferred 2mm; The arc section radius r is 1.5-2.5mm, in this embodiment, and preferred 2mm; Opening 8 cross sections of last forming cavity are circular, and opening 8 diameters of last forming cavity are 4.5-10mm, preferred 7.5mm.
It is following that the method step that the riveting mould rivets is revolved in utilization:
(1) through rivet two parts is linked together, and make the upper and lower side of rivet stretch out parts.
(2) lower end with rivet places the compacted under chamber, slowly moves patrix and descends, and makes the lower end of rivet place forming cavity.
(3) start patrix, make the patrix rotation and produce downward pressure, in the riveted joint process; The lower end of rivet at first with the contacts side surfaces in compacted under chamber; The upper end of rivet is prior to the arc section contact of last forming cavity, and along with pressing down of patrix, plastic deformation takes place in forming cavity for the lower end of rivet and upper end; When the upper surface that patrix is depressed into rivet contacted with straightway, the riveted joint of rivet upper end was accomplished, and plastic deformation is continued to take place till rivet lower end and compacted under chamber fit like a glove in the lower end of rivet.
In this embodiment, because last forming cavity bottom surface is a straightway, the side of last forming cavity is an arc section; When the rivet upper surface did not touch straightway, the rivet upper end was long-pending little with the contacting section of last forming cavity, according to formula (wherein; Be stress, P is a load, and A is a sectional area), formula (wherein; Be strain, L is the variable after being out of shape, L
0Variable before being to be out of shape) can know that with stress, strain curve under same load, sectional area is more little, the stress that is then produced is big more, and stress is big more, and then strain is also big more, and deflection is big, thereby has shortened the time of distortion, has improved the efficient of riveting; When the upper surface of rivet contacted with straightway, last forming cavity had positioning action to rivet, can prevent rivet skew in the riveted joint process, guaranteed that rivet top and bottom deflection on same circumference is the same, had reduced the phenomenon that stress is concentrated.
The 3rd embodiment.
As shown in Figure 1, riveter comprises mounting platform 100, be fixed on column 101 on the mounting platform 100, can be in the transfer gear box of sliding on the column 102, be installed in motor 103 on the transfer gear box 102, be installed in the output shaft 104 on the transfer gear box 102.
On above-mentioned riveter, be equipped with and revolve the riveting mould, the described riveting mould that revolves comprises counterdie 1, patrix 2 and base 3.Base 3 bottom surfaces have trapezoid block, and base is installed on the mounting platform through trapezoid block, and described counterdie 1 is fixed on the base 3, and described patrix 2 is fixed on the 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 upwards last forming cavity 21 of depression; Described compacted under chamber 11 is a sphere shape, and the arc radius R that passes centre of sphere parting face is 2.98-5.75mm, in this embodiment, and preferred 5.75mm, the pairing chord length L of circular arc is 5.2-10.5mm, preferred 10.5mm; As shown in Figure 4, last forming cavity bottom surface 6 is a straightway, and the side 7 of last forming cavity is an arc section, and the straightway bottom surface is 1.5-2.5mm to the distance H of patrix bottom surface, in this embodiment, and preferred 2.5mm; The arc section radius r is 1.5-2.5mm, in this embodiment, and preferred 2.5mm; Opening 8 cross sections of last forming cavity are circular, and opening 8 diameters of last forming cavity are 4.5-10mm, preferred 10mm.
It is following that the method step that the riveting mould rivets is revolved in utilization:
(1) through rivet two parts is linked together, and make the upper and lower side of rivet stretch out parts.
(2) lower end with rivet places the compacted under chamber, slowly moves patrix and descends, and makes the lower end of rivet place forming cavity.
(3) start patrix, make the patrix rotation and produce downward pressure, in the riveted joint process; The lower end of rivet at first with the contacts side surfaces in compacted under chamber; The upper end of rivet is prior to the arc section contact of last forming cavity, and along with pressing down of patrix, plastic deformation takes place in forming cavity for the lower end of rivet and upper end; When the upper surface that patrix is depressed into rivet contacted with straightway, the riveted joint of rivet upper end was accomplished, and plastic deformation is continued to take place till rivet lower end and compacted under chamber fit like a glove in the lower end of rivet.
In this embodiment, because last forming cavity bottom surface is a straightway, the side of last forming cavity is an arc section; When the rivet upper surface did not touch straightway, the rivet upper end was long-pending little with the contacting section of last forming cavity, according to formula (wherein; Be stress, P is a load, and A is a sectional area), formula
(wherein, be strain, L is the variable after being out of shape, L
0Variable before being to be out of shape) can know that with stress, strain curve under same load, sectional area is more little, the stress that is then produced is big more, and stress is big more, and then strain is also big more, and deflection is big, thereby has shortened the time of distortion, has improved the efficient of riveting; When the upper surface of rivet contacted with straightway, last forming cavity had positioning action to rivet, can prevent rivet skew in the riveted joint process, guaranteed that rivet top and bottom deflection on same circumference is the same, had reduced the phenomenon that stress is concentrated.
Claims (7)
1. what be used to assemble balancer revolves the riveting mould, 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 upwards last forming cavity of depression; Described compacted under chamber is a sphere shape, it is characterized in that: the arc radius that passes centre of sphere parting face is 2.98-5.75mm, and the pairing chord length of circular arc is 5.2-10.5mm; Last forming cavity bottom surface is a straightway; The side of last forming cavity is an arc section, and the straightway bottom surface is 1.5-2.5mm to the distance of patrix bottom surface, and the arc section radius is 1.5-2.5mm; The opening section of last forming cavity is circular, and the opening diameter of last forming cavity is 4.5-10mm.
2. according to claim 1 be used to assemble balancer revolve the riveting mould, 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 2 be used to assemble balancer revolve the riveting mould, it is characterized in that: the lower end at counterdie is fixed with base.
4. utilize and revolve the method that the riveting mould is riveted, it is characterized in that: revolve the 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 upwards last forming cavity of depression; Described compacted under chamber is a sphere shape, and the arc radius that wherein passes centre of sphere parting face is 2.98-5.75mm, and the pairing chord length of circular arc is 5.2-10.5mm; Last forming cavity bottom surface is a straightway; The side of last forming cavity is an arc section, and the straightway bottom surface is 1.5-2.5mm to the distance of patrix bottom surface, and the arc section radius is 1.5-2.5mm; The opening section of last forming cavity is circular, and the opening diameter of last forming cavity is 4.5-10mm;
It is following that the method step that the riveting mould rivets is revolved in utilization:
(1) through rivet two parts is linked together, and make the upper and lower side of rivet stretch out parts;
(2) lower end with rivet places the compacted under chamber, slowly moves patrix and descends, and makes the lower end of rivet place forming cavity;
(3) start patrix, make the patrix rotation and produce downward pressure and accomplish riveted joint.
5. the method that the riveting mould is riveted 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 at first with the contacts side surfaces in compacted under chamber; The upper end of rivet contacts with the arc section of last forming cavity earlier, and along with pressing down of patrix, plastic deformation takes place in forming cavity for the lower end of rivet and upper end; When the upper surface that patrix is depressed into rivet contacted with straightway, the riveted joint of rivet upper end was accomplished, and plastic deformation is continued to take place till rivet lower end and compacted under chamber fit like a glove in the lower end of rivet.
6. the method that the riveting mould is riveted 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. revolve the method that the riveting mould is riveted according to claim 4 or 5 described utilizations, it is characterized in that: the lower end at counterdie is fixed with base.
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 |
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| Publication Number | Publication Date |
|---|---|
| CN102513497A true CN102513497A (en) | 2012-06-27 |
| CN102513497B CN102513497B (en) | 2015-01-14 |
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| 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 |
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Cited By (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 |
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| 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 |
| GB917561A (en) * | 1958-07-30 | 1963-02-06 | Ernst Zur Linden | Method of manufacturing heat-treated impact tools used in conjunction with impact hammers, and impact tools manufactured by this method |
| 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 |
| JPH08117896A (en) * | 1994-10-25 | 1996-05-14 | Honda Motor Co Ltd | Caulking method |
| US5557835A (en) * | 1991-02-19 | 1996-09-24 | Brandts; Michiel P. | Method, Rivet-Punch, for joining several metal sheets by using non-heat-treated rivets made from an aluminium alloy |
| US7076864B2 (en) * | 2003-01-07 | 2006-07-18 | Gbm Rivet & Fasteners Inc. | Riveting tool |
| 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 |
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2011
- 2011-12-13 CN CN201110414497.8A patent/CN102513497B/en active Active
Patent Citations (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 |
| GB917561A (en) * | 1958-07-30 | 1963-02-06 | Ernst Zur Linden | Method of manufacturing heat-treated impact tools used in conjunction with impact hammers, and impact tools manufactured by this method |
| 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 |
| US5557835A (en) * | 1991-02-19 | 1996-09-24 | Brandts; Michiel P. | Method, Rivet-Punch, for joining several metal sheets by using non-heat-treated rivets made from an aluminium alloy |
| JPH08117896A (en) * | 1994-10-25 | 1996-05-14 | Honda Motor Co Ltd | Caulking method |
| US7076864B2 (en) * | 2003-01-07 | 2006-07-18 | Gbm Rivet & Fasteners Inc. | Riveting tool |
| 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 |
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102513497B (en) | 2015-01-14 |
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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. |