CN204221317U - A kind of press fitting of piston pin device - Google Patents
A kind of press fitting of piston pin device Download PDFInfo
- Publication number
- CN204221317U CN204221317U CN201420676449.5U CN201420676449U CN204221317U CN 204221317 U CN204221317 U CN 204221317U CN 201420676449 U CN201420676449 U CN 201420676449U CN 204221317 U CN204221317 U CN 204221317U
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- CN
- China
- Prior art keywords
- locating shaft
- piston
- piston pin
- supporting seat
- press fitting
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- 238000009434 installation Methods 0.000 claims abstract description 17
- 210000000452 mid-foot Anatomy 0.000 claims abstract description 9
- 238000004080 punching Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000003825 pressing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241001125879 Gobio Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model discloses a kind of press fitting of piston pin device, it comprises frame (1) and the press fitting of piston pin mechanism be installed in frame (1) and positioning fixture, positioning fixture comprises big end end support fixture, connecting rod midfoot support block (2) and piston support fixture, piston support fixture comprises the supporting seat (6) that a upper surface is concave panel, the bottom of supporting seat (6) is provided with a telescopic locating shaft (7), and the depression bar (12) of press fitting of piston pin mechanism is positioned at directly over locating shaft (7).The beneficial effects of the utility model are: accurate positioning, and handled easily improves assembly precision, save installation time, avoid the damage of fixture to workpiece, achieve being in place smoothly of alignment pin, a hydraulic cylinder punching press can complete the assembling of a workpiece, and efficiency of assembling is high.
Description
Technical field
The utility model relates to a kind of press fitting of piston pin device.
Background technology
Engine gudgeon pin and the fit system of small end of connecting rod have full floating to be connected to be connected two kinds of modes with semi-floating, wherein semi-floating connects is piston pin and small end of connecting rod are fixed together, there is not relative motion in both in engine operation process, only has relatively rotating between piston pin and piston.Its fixing means one is by screw fastening, but by interference pressing.Wherein interference pressing mode is widely used on the engine gudgeon pin press-loading process of car, station wagon and minitruck.The quality of said structure assembly quality, on the sealing of cylinder operation with there is direct impact service life.In prior art, piston pin mostly can only beat with "painted-face" character in opera by hand or be assembled by pressing machine.But it is inaccurate to there is location in existing technique or equipment, and assembly difficulty is large, and yield rate is low, the problem that production efficiency is low.
Utility model content
The purpose of this utility model is the shortcoming overcoming prior art, provides a kind of accurate positioning, handled easily, press fitting of piston pin device that efficiency of assembling is high.
The purpose of this utility model is achieved through the following technical solutions: a kind of press fitting of piston pin device, it comprises frame and the press fitting of piston pin mechanism be installed in frame and positioning fixture, described positioning fixture comprises big end end support fixture, connecting rod midfoot support block and piston support fixture, described big end end support fixture comprises a support platform, support platform is provided with the boss of the column type that is matched with big end end through hole, the both sides of boss are provided with a limited block, the upper surface of described connecting rod midfoot support block is provided with the Horizontal limiting groove in the middle part of for installing connecting rods, it is the supporting seat of concave panel that described piston support fixture comprises a upper surface, the bottom of supporting seat is provided with a telescopic locating shaft, the external diameter of locating shaft and the diameter compatible of piston upper piston pin installing hole close, described press fitting of piston pin mechanism comprises the depression bar of the vertical hydraulic cylinder be fixed in frame and the piston rod end being installed on vertical hydraulic cylinder, the diameter compatible of the piston pin installing hole on the external diameter of depression bar and piston closes, and depression bar is positioned at directly over locating shaft.
The concave panel of described supporting seat matches with the outer surface of piston.
The frame being positioned at the bottom of described supporting seat is provided with a locating shaft installation cavity, described supporting seat is provided with the vertical through hole for installing locating shaft, locating shaft is arranged in the vertical through hole of supporting seat, the bottom of locating shaft is stretched in locating shaft installation cavity, the excircle being positioned at the locating shaft of locating shaft installation cavity is provided with an annular stop bit protruding, the locating shaft being positioned at the protruding bottom of stop bit is set with Compress Spring, one end of Compress Spring presses on the bottom surface of the locating shaft installation cavity being positioned at locating shaft bottom, the other end of Compress Spring presses in stop bit projection.
The utility model has the following advantages: the utility model accurate positioning, handled easily, improve assembly precision, save installation time, compared to existing technology, avoid the damage of manually beaing fabricated part parts, scalable locating shaft coordinates supporting seat both to achieve the accurate location of piston, make even piston stress again, avoid the damage of fixture to workpiece, also pinpoint, there is the good bit function that allows simultaneously, achieve being in place smoothly of alignment pin, a hydraulic cylinder punching press can complete the assembling of a workpiece, and efficiency of assembling is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of supporting seat of the present utility model;
Fig. 3 is positioning fixture structure schematic diagram of the present utility model
Fig. 4 is the sectional view of Fig. 3 along A-A cross section;
In figure, 1-frame, 2-connecting rod midfoot support block, 3-support platform, 4-boss, 5-limited block, 6-supporting seat, 7-locating shaft, 8-locating shaft installation cavity, 9-stop bit is protruding, 10-Compress Spring, 11-vertical hydraulic cylinder, 12-depression bar, 13-piston pin.
Detailed description of the invention
Be further described the utility model below in conjunction with accompanying drawing, protection domain of the present utility model is not limited to the following stated:
As shown in Figure 1, a kind of press fitting of piston pin device, it comprises frame 1 and the press fitting of piston pin mechanism be installed in frame 1 and positioning fixture, as Fig. 3, shown in Fig. 4, described positioning fixture comprises big end end support fixture, connecting rod midfoot support block 2 and piston support fixture, described big end end support fixture comprises a support platform 3, support platform 3 is provided with the boss 4 of the column type that is matched with big end end through hole, the both sides of boss 4 are provided with inwall when a through hole when big end end is set on column type boss 4 and are close to the limited block 5 of big end end outer surface, the upper surface of described connecting rod midfoot support block 2 be provided with connecting rod in the middle part of matching form close, for the Horizontal limiting groove in the middle part of installing connecting rods, the inwall of Horizontal limiting groove is close to the outer wall of connecting rod, realize the spacing location in the middle part of connecting rod, as shown in Figure 2, described piston support fixture comprises the supporting seat 6 that a upper surface is concave panel, the concave panel of supporting seat 6 matches with the outer surface of piston, as Fig. 3, shown in Fig. 4, the bottom of supporting seat 6 is provided with a telescopic locating shaft 7, the external diameter of locating shaft 7 and the diameter compatible of piston upper piston pin installing hole close, the frame 1 being positioned at the bottom of described supporting seat 6 is provided with a locating shaft installation cavity 8, described supporting seat 6 is provided with the vertical through hole for installing locating shaft 7, locating shaft 7 is arranged in the vertical through hole of supporting seat 6, the bottom of locating shaft 7 is stretched in locating shaft installation cavity 8, the excircle being positioned at the locating shaft 7 of locating shaft installation cavity 8 is provided with an annular stop bit projection 9, the locating shaft 7 being positioned at protruding 9 bottoms of stop bit is set with Compress Spring 10, one end of Compress Spring 10 presses on the bottom surface of the locating shaft installation cavity 8 being positioned at locating shaft 7 bottom, the other end of Compress Spring 10 presses in stop bit projection 9, under the effect of Compress Spring 10, the upper surface of stop bit projection 9 presses on the lower surface of supporting seat 6.
Described press fitting of piston pin mechanism comprises the depression bar 12 of the vertical hydraulic cylinder 11 be fixed in frame 1 and the piston rod end being installed on vertical hydraulic cylinder 11, the diameter compatible of the piston pin installing hole on the external diameter of depression bar 12 and piston closes, and depression bar 12 is positioned at directly over locating shaft 7.
During use, piston is installed on supporting seat 6, and the piston pin installing hole of piston lower portion is set on locating shaft 7, and the outer surface of piston and the concave panel of supporting seat 6 fit tightly, realize location and support, concave panel be arranged so that the support force that piston bears is even.The through hole of big end end is set on boss 4, and both sides are spacing by limited block 5, and the middle part of connecting rod is placed in the Horizontal limiting groove of connecting rod midfoot support block 2.By arranging the installation site of each parts of positioning fixture, the through hole of the small end of connecting rod end after now locating and the piston pin installing hole of piston are aligned, the lower end of piston pin 13 is pre-loaded in the piston pin installing hole of upper piston area, then vertical hydraulic cylinder 11 is started, drive depression bar 12 pressing piston pin 13 downwards, piston pin 13 is under the pressure effect of depression bar 12, penetrate in the through hole of small end of connecting rod end and the piston pin installing hole of piston lower portion successively, the installation that the pressure that locating shaft 7 is subject to piston pin 13 moves downward as piston pin 13 is stepped down, after piston pin 13 is in place, the piston rod of hydraulic cylinder is regained, complete connecting rod to be connected by piston pin 13 with piston, after taking off the finished product assembled, locating shaft 7 resets under the effect of Compress Spring 10.
Claims (3)
1. a press fitting of piston pin device, it is characterized in that: it comprises frame (1) and the press fitting of piston pin mechanism be installed in frame (1) and positioning fixture, described positioning fixture comprises big end end support fixture, connecting rod midfoot support block (2) and piston support fixture, described big end end support fixture comprises a support platform (3), support platform (3) is provided with the boss (4) of the column type that is matched with big end end through hole, the both sides of boss (4) are provided with a limited block (5), the upper surface of described connecting rod midfoot support block (2) is provided with the Horizontal limiting groove in the middle part of for installing connecting rods, described piston support fixture comprises the supporting seat (6) that a upper surface is concave panel, the bottom of supporting seat (6) is provided with a telescopic locating shaft (7), the external diameter of locating shaft (7) and the diameter compatible of piston upper piston pin installing hole close, described press fitting of piston pin mechanism comprises the depression bar (12) of the vertical hydraulic cylinder (11) be fixed in frame (1) and the piston rod end being installed on vertical hydraulic cylinder (11), the diameter compatible of the piston pin installing hole on the external diameter of depression bar (12) and piston closes, and depression bar (12) is positioned at directly over locating shaft (7).
2. a kind of press fitting of piston pin device according to claim 1, is characterized in that: the concave panel of described supporting seat (6) matches with the outer surface of piston.
3. a kind of press fitting of piston pin device according to claim 1, it is characterized in that: the frame (1) being positioned at the bottom of described supporting seat (6) is provided with a locating shaft installation cavity (8), described supporting seat (6) is provided with the vertical through hole for installing locating shaft (7), locating shaft (7) is arranged in the vertical through hole of supporting seat (6), the bottom of locating shaft (7) is stretched in locating shaft installation cavity (8), the excircle being positioned at the locating shaft (7) of locating shaft installation cavity (8) is provided with an annular stop bit projection (9), the locating shaft (7) being positioned at stop bit projection (9) bottom is set with Compress Spring (10), one end of Compress Spring (10) presses on the bottom surface of the locating shaft installation cavity (8) being positioned at locating shaft (7) bottom, the other end of Compress Spring (10) presses in stop bit projection (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420676449.5U CN204221317U (en) | 2014-11-13 | 2014-11-13 | A kind of press fitting of piston pin device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420676449.5U CN204221317U (en) | 2014-11-13 | 2014-11-13 | A kind of press fitting of piston pin device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204221317U true CN204221317U (en) | 2015-03-25 |
Family
ID=52919459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420676449.5U Active CN204221317U (en) | 2014-11-13 | 2014-11-13 | A kind of press fitting of piston pin device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204221317U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106956122A (en) * | 2017-04-27 | 2017-07-18 | 苏州工业职业技术学院 | A kind of automatic piston pin assembly machine |
| CN107717852A (en) * | 2017-10-27 | 2018-02-23 | 芜湖航天汽车连杆有限公司 | Automobile connecting bar major part terminal bolt installation method |
-
2014
- 2014-11-13 CN CN201420676449.5U patent/CN204221317U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106956122A (en) * | 2017-04-27 | 2017-07-18 | 苏州工业职业技术学院 | A kind of automatic piston pin assembly machine |
| CN107717852A (en) * | 2017-10-27 | 2018-02-23 | 芜湖航天汽车连杆有限公司 | Automobile connecting bar major part terminal bolt installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SICHUAN YEMA AUTOMOBILE CO., LTD. Free format text: FORMER NAME: SICHUAN AUTOMOBILE INDUSTRY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 610100, No. 625, Beijing Road, Chengdu economic and Technological Development Zone, Longquanyi District, Sichuan, Chengdu, Longquanyi Patentee after: SICHUAN YEMA AUTOMOBILE Co.,Ltd. Address before: 610100, No. 625, Beijing Road, Chengdu economic and Technological Development Zone, Longquanyi District, Sichuan, Chengdu, Longquanyi Patentee before: SICHUAN AUTOMOBILE INDUSTRY Co.,Ltd. |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20210115 Granted publication date: 20150325 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20240115 Granted publication date: 20150325 |