CN107571175B - Rectifier B+ screw press-fitting fixture - Google Patents
Rectifier B+ screw press-fitting fixture Download PDFInfo
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- CN107571175B CN107571175B CN201710801281.4A CN201710801281A CN107571175B CN 107571175 B CN107571175 B CN 107571175B CN 201710801281 A CN201710801281 A CN 201710801281A CN 107571175 B CN107571175 B CN 107571175B
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- 238000003825 pressing Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The invention discloses a rectifier B+ screw press-fitting clamp which comprises a die shank connected to an upper die of press-fitting equipment, a base connected to a lower die of the press-fitting equipment, a pressing head arranged on the die shank and used for pressing down the B+ screw, guide posts symmetrically arranged on the base, and a sliding block formed in a clearance hole of the base and connected with the guide posts in a sliding manner, wherein a groove matched with a head of the B+ screw is formed in the base. The advantages are that: compared with the traditional press-fitting clamp, the press-fitting clamp saves the die changing time and improves the production efficiency; the condition of polar plate tipping in the press mounting process is avoided, and the press mounting precision is further ensured; the condition that the installation accuracy is not up to standard due to the deformation of the pressure head is reduced.
Description
Technical Field
The invention relates to a tool for a B+ screw rod of a rectifier in an automobile generator, in particular to a press-fitting clamp for the B+ screw rod of the rectifier.
Background
The B+ screw rod of the rectifier is a necessary component for generating current to be output to various electric appliances on the automobile by the automobile generator, so that larger current always passes through the B+ screw rod in the working state. The bottom of the B+ screw is provided with straight lines, and the diameter of the straight lines is 0.2-0.4mm larger than that of the screw holes of the polar plate, so that the B+ screw is required to be pressed into the polar plate during installation. The press mounting requirement of the B+ screw and the polar plate is particularly high, if the B+ screw and the polar plate are in press mounting, the polar plate is deformed or can not be tightly attached due to other factors, a large contact resistance can be generated between the B+ screw and the polar plate, when the generator is in a working state, a large amount of heat can be generated between the B+ screw and the polar plate due to the contact resistance, and the generator can be ignited when serious. The press-mounting precision of the conventional tool is to be improved, as in fig. 1-3, the press-mounting working condition of the b+ screw and the polar plate in the prior art is shown, the conventional base is integrally inverted T-shaped, the vertical surface of the conventional base is used for fixing the non-press-mounting surface of the polar plate 14, in order to prevent interference during press-mounting, the conventional press head is designed into a special shape, the end part of the conventional press head protrudes to one side, and the force is transmitted to the b+ screw by means of the protruding part during operation, so that the b+ screw is press-mounted on the polar plate. This press-fit method has a great disadvantage: firstly, a traditional pressure head needs to be made into a special shape to avoid interference between a polar plate and a traditional die shank, and the special-shaped pressure head deforms due to unbalanced stress and long service time, so that a B+ screw rod is biased, and the press-fitting precision is reduced; secondly, the polar plate is not stably placed on the base, the tipping moment arm is larger, and the polar plate is easy to incline, so that the press-fitting precision is low; and the press-fitting position is not well adjusted, and the position of the traditional press head is easily misaligned during working and is pressed on the polar plate, so that the polar plate is scrapped.
Therefore, the tooling of the B+ screw and the polar plate is improved, the press mounting precision of the B+ screw and the polar plate is improved, and the tooling is an important problem for improving the safety performance of an automobile generator.
Disclosure of Invention
The invention aims to provide a press-fitting clamp for a B+ screw rod of a rectifier, which solves the problem that the B+ screw rod of the rectifier in a generator is not easy to be tightly attached to a polar plate during press-fitting, and improves the press-fitting precision of the B+ screw rod and the polar plate.
In order to solve the problems, the technical scheme of the invention is as follows: the utility model provides a rectifier B+ screw rod pressure equipment anchor clamps, includes the die shank of connecting on the last mould of pressure equipment, connects the base under the lower mould of pressure equipment, locates on the die shank and be used for pushing down the pressure head of B+ screw rod, the guide post on the base is located to the symmetry and is formed in the clearance room of base and with guide post sliding connection's slider, be equipped with on the base with the head matched recess of B+ screw rod.
Further, the sliding block is connected with the guide post through a linear bearing.
Further, the device also comprises a special-shaped pin for fixing the pole plate to be pressed on the sliding block, wherein the special-shaped pin is connected with the sliding block through a fastener.
Further, a limiting block for limiting the polar plate to move is arranged between the fastener and the special-shaped pin.
Further, the base is connected to the lower die of the press-fitting apparatus through a pad.
Furthermore, two hard limiting plates are arranged on the base plate.
Further, elastic pieces are arranged at two ends of the guide post.
Further, the length of the elastic piece at the upper end of the guide post is longer than that of the elastic piece at the lower end of the guide post.
Further, the orthographic projection of the groove is non-circular.
Compared with the prior art, the invention has the following technical effects:
1. compared with the traditional press-fitting clamp, the press-fitting clamp for the rectifier B+ screw rod provided by the invention is more convenient for the quick die change of a production line, and saves the die change time, thereby improving the production efficiency.
2. According to the rectifier B+ screw press-fitting clamp, when the rectifier B+ screw press-fitting clamp is used for press-fitting, the polar plate is fixed on the sliding block, the special-shaped pin and the limiting block are arranged transversely to limit, and the elastic piece is arranged longitudinally to limit, so that the situation that the polar plate is tipped over in the press-fitting process is avoided, and the press-fitting precision is further ensured.
3. According to the rectifier B+ screw press-fitting clamp, the press head cannot be made into a special shape in order to avoid interference between the polar plate and the die shank, and the requirement on the shape of the press head is reduced, so that the performance of the press head can be preferentially considered when the press head is selected, and the condition that the press-fitting precision is not up to standard due to deformation of the press head is reduced.
4. The rectifier B+ screw press-fitting clamp provided by the invention does not relate to the interference problem of the pressure head and the polar plate during press-fitting, so that the situation that the polar plate is scrapped due to the fact that the pressure head is pressed onto the polar plate is avoided.
Drawings
The invention will now be further described with reference to the drawings and examples.
Fig. 1 is a schematic diagram of a conventional rectifier b+ screw press-fitting operation.
Fig. 2 is a schematic diagram of a conventional rectifier b+ screw press-fitting operation.
Fig. 3 is a schematic diagram of a conventional rectifier b+ screw press-fitting operation.
Fig. 4 is a schematic diagram of the present invention.
Fig. 5 is an enlarged view of a portion a in fig. 4.
Fig. 6 is a schematic diagram of the press-fitting working condition of the rectifier b+ screw of the present invention.
Fig. 7 is a schematic diagram of a press-fitting condition of a rectifier b+ screw according to the present invention.
Fig. 8 is a schematic diagram of the press-fitting working condition of the rectifier b+ screw of the present invention.
Fig. 9 is a cross-sectional view of a ram of the present invention.
Fig. 10 is a side view of the base of the present invention.
Fig. 11 is a schematic view of a shaped pin of the present invention.
Fig. 12 is a schematic view of a stopper according to the present invention.
Wherein: 1. the die comprises a die shank, 2, a pressing head, 3, a base, 301, a groove, 4, a sliding block, 5, a guide post, 6, a spring, 7, a special-shaped pin, 8, a positioning pin, 9, a limiting block, 10, a linear bearing, 11, a hard limit, 12, a traditional pressing head, 13, a traditional base, 14, a polar plate, 15, a B+ screw, 16, a backing plate, 17 and a traditional die shank.
Detailed Description
As shown in fig. 4 and 5, the invention comprises a die shank 1, a pressing head 2, a base 3, a sliding block 4, a guide post 5, a spring 6, a special-shaped pin 7, a positioning pin 8, a limiting block 9, a linear bearing 10, a hard limiting block 11 and a base plate 16. Wherein the die shank 1 is fixed on an upper die of the press-fitting equipment, and a counter bore is arranged on the die shank 1 and is used for being connected with the pressure head 2. As shown in fig. 9, the threaded hole at the thick end of the ram 2 is matched with a bolt to connect the die shank 1, and the hollow at the thin end of the ram 2 is used for passing the b+ screw 15 during press fitting. The base 3 is fixed on a lower die of the press-fitting device through a gasket,
as shown in fig. 4 and 10, the upper end surface of the base 3 is provided with a groove 301 for placing the head of the b+ screw 15, so that the size of the groove 301 is slightly larger than the size of the head of the b+ screw 15, and the vertical projection of the groove 301 is square, so as to prevent the rotation of the b+ screw 15 during the press-fitting process and improve the press-fitting stability. The middle part of the base 3 forms a clearance space. The left and right sides of the base 3 are symmetrically fixed with two guide posts 5 by bolts. The springs 6 are positioned at the upper end and the lower end of the guide post 5, wherein the length of the spring at the upper end is longer than that of the spring at the lower end, and the design is used for ensuring that the polar plate 14 is stressed downwards by the spring at the upper end along with the sliding block 4 before or during press fitting after the polar plate 14 is placed, so that the phenomenon of loosening of the polar plate 14 is skillfully avoided. The sliding block 4 is fixed on the outer ring of the linear bearing 10, and the linear bearing 10 is matched with the guide post 5, so that the effect of linear reciprocating motion of the sliding block 4 on the guide post 5 with a lower friction coefficient is realized.
As shown in fig. 7, 11 and 12, in order to prevent the polar plate 14 from moving transversely or longitudinally, the polar plate 14 is to be positioned on the sliding block 4 before press fitting, the polar plate 14 is effectively prevented from rocking left and right by the two special-shaped pins 7, the polar plate 14 is effectively prevented from rocking back and forth by the limiting block 9, and the special-shaped pins 7 and the limiting block 9 are fixed on the sliding block 4 through the positioning pins 8. The hard limit 11 has two parts, and the bottom part of the hard limit is fixed on the base plate 16. The hard limit 11 corresponds to the press mounting equipment, the height of the hard limit 11 is set in advance, and in the press mounting process, when the corresponding positions of the hard limit 11 and the upper die of the press mounting equipment are tightly attached, the polar plate 14 and the screw are just pressed and mounted to be qualified.
Fig. 6-8 show the press-fitting working condition of the press-fitting clamp of the rectifier b+ screw 15, as shown in fig. 6, the head of the b+ screw 15 is firstly placed in the groove 301 of the base 3; as shown in fig. 7, the press-fit surface of the polar plate 14 passes through the b+ screw 15, and the non-press-fit surface in the vertical direction is fixed on the sliding block 4 through the special-shaped pin 7, the positioning pin 8 and the limiting block 9; after the polar plate 14 is fixed, starting a press-fitting device to press the polar plate 14 downwards by means of the pressing head 2 penetrating through the B+ screw 15 during press-fitting; as shown in fig. 8, after being pressed into a proper position, the pressing head 2 and the die shank 1 return along with an upper die of the pressing device, and the pressing is completed.
The rectifier B+ screw 15 press-fitting fixture provided by the invention has a plurality of advantages: compared with the traditional press-fitting clamp, the quick die change of the production line is more convenient, the die change time is saved, and the production efficiency is improved. During press fitting, the polar plate 14 is fixed on the sliding block 4, the special-shaped pin 7 and the limiting block 9 are transversely limited, and the elastic piece is longitudinally limited, so that the situation that the polar plate 14 is tipped over in the press fitting process is avoided, and the press fitting precision is further guaranteed. The pressure head 2 can not be made into special shapes in order to avoid interference between the polar plate 14 and the die shank, and the requirement on the shape of the pressure head 2 is reduced, so that the performance of the pressure head 2 can be preferentially considered when the pressure head 2 is selected, and the condition that the press fitting precision is not up to standard due to deformation of the pressure head 2 is reduced. The interference problem of the pressure head 2 and the polar plate 14 is not involved in the press fitting process, so that the situation that the polar plate 14 is scrapped due to the fact that the pressure head 2 is pressed onto the polar plate 14 is avoided.
The above disclosure is only one specific embodiment of the present application, but the present application is not limited thereto, and any changes that can be thought by those skilled in the art should fall within the protection scope of the present application.
Claims (5)
1. The rectifier B+ screw press-fitting clamp is characterized by comprising a die shank connected to an upper die of press-fitting equipment, a base connected to a lower die of the press-fitting equipment, a pressure head arranged on the die shank and used for pressing down the B+ screw, guide posts symmetrically arranged on the base, and a sliding block formed on a clearance hole of the base and slidingly connected with the guide posts, wherein the base is provided with a groove matched with the head of the B+ screw, and further comprises a special-shaped pin used for fixing a polar plate to be installed on the sliding block, the special-shaped pin is connected with the sliding block through a fastener, and a limiting block used for limiting polar plate movement is arranged between the fastener and the special-shaped pin; elastic pieces are arranged at two ends of the guide post, and the length of the elastic piece at the upper end of the guide post is longer than that of the elastic piece at the lower end of the guide post.
2. The rectifier b+ screw press-fitting jig according to claim 1, wherein: the sliding block is connected with the guide post through a linear bearing.
3. The rectifier b+ screw press-fitting jig according to claim 1, wherein: the base is connected to the lower die of the press-fitting apparatus through a pad.
4. A rectifier b+ screw press-fitting jig according to claim 3, wherein: and two hard limiting parts are arranged on the base plate.
5. The rectifier b+ screw press-fitting jig according to claim 1, wherein: the orthographic projection of the groove is non-circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710801281.4A CN107571175B (en) | 2017-09-07 | 2017-09-07 | Rectifier B+ screw press-fitting fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710801281.4A CN107571175B (en) | 2017-09-07 | 2017-09-07 | Rectifier B+ screw press-fitting fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107571175A CN107571175A (en) | 2018-01-12 |
| CN107571175B true CN107571175B (en) | 2024-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710801281.4A Active CN107571175B (en) | 2017-09-07 | 2017-09-07 | Rectifier B+ screw press-fitting fixture |
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| CN (1) | CN107571175B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318713B (en) * | 2018-01-30 | 2020-11-03 | 兰州大学 | Contact resistance test clamping device based on pressure adjustment clamping area and quantity |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201208723Y (en) * | 2007-12-20 | 2009-03-18 | 浙江双环传动机械股份有限公司 | Two gear oil groove contraposition press mounting fixture |
| KR100918673B1 (en) * | 2009-02-09 | 2009-09-22 | (주)그린아트산업 | Auto tighten device of a nut |
| JP2011093030A (en) * | 2009-10-28 | 2011-05-12 | Isamu Kataoka | Mounting tool for plate material |
| CN203390868U (en) * | 2013-07-29 | 2014-01-15 | 江苏云意电气股份有限公司 | Rectifier diode positioning and press-mounting clamp |
| CN104852604A (en) * | 2015-05-27 | 2015-08-19 | 江苏云意电气股份有限公司 | Structure of self-locking screw of automobile generator |
| CN106272257A (en) * | 2016-08-30 | 2017-01-04 | 宁波圣龙汽车动力***股份有限公司 | Lubricating oil pump rapid spring mounting tool |
| CN207344453U (en) * | 2017-09-07 | 2018-05-11 | 江苏云意电气股份有限公司 | A kind of rectifier B+screw rod pressing clamp |
-
2017
- 2017-09-07 CN CN201710801281.4A patent/CN107571175B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201208723Y (en) * | 2007-12-20 | 2009-03-18 | 浙江双环传动机械股份有限公司 | Two gear oil groove contraposition press mounting fixture |
| KR100918673B1 (en) * | 2009-02-09 | 2009-09-22 | (주)그린아트산업 | Auto tighten device of a nut |
| JP2011093030A (en) * | 2009-10-28 | 2011-05-12 | Isamu Kataoka | Mounting tool for plate material |
| CN203390868U (en) * | 2013-07-29 | 2014-01-15 | 江苏云意电气股份有限公司 | Rectifier diode positioning and press-mounting clamp |
| CN104852604A (en) * | 2015-05-27 | 2015-08-19 | 江苏云意电气股份有限公司 | Structure of self-locking screw of automobile generator |
| CN106272257A (en) * | 2016-08-30 | 2017-01-04 | 宁波圣龙汽车动力***股份有限公司 | Lubricating oil pump rapid spring mounting tool |
| CN207344453U (en) * | 2017-09-07 | 2018-05-11 | 江苏云意电气股份有限公司 | A kind of rectifier B+screw rod pressing clamp |
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| Publication number | Publication date |
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| CN107571175A (en) | 2018-01-12 |
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