CN113843601A - Method for press mounting of piston - Google Patents
Method for press mounting of piston Download PDFInfo
- Publication number
- CN113843601A CN113843601A CN202110939240.8A CN202110939240A CN113843601A CN 113843601 A CN113843601 A CN 113843601A CN 202110939240 A CN202110939240 A CN 202110939240A CN 113843601 A CN113843601 A CN 113843601A
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- piston
- pressure
- press
- cylinder body
- lip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The invention discloses a method for press mounting of a piston, which comprises the following steps: 1) installing a pressure platform below a pressure rod of a press machine; 2) placing the piston cylinder on a pressure platform; 3) lubricating oil is smeared on the lip of the piston and the inner wall of the piston cylinder body, and the piston is horizontally placed on the piston cylinder body; 4) fixedly connecting the lower end of the pressure lever with the center of the upper surface of the cross-shaped pressure plate; 5) starting the press machine, adjusting the pressure value and the rotating speed of the pressure rod to preset values, driving the cross-shaped pressure plate to descend at a constant speed and rotate at a constant speed by the pressure rod, and contacting and press-fitting the piston with the cross-shaped pressure plate; 6) after the lip of the piston enters the guide groove of the piston cylinder body, closing the rotation function of the pressure lever and continuously pressing the piston; 7) after the piston is in place, the pressure application is stopped. The method can ensure that the piston lip rotates and is pressed when entering the cylinder body, thereby avoiding the buckling damage, lip flanging and extrusion pull damage of the piston in the assembling process.
Description
Technical Field
The invention relates to the field of piston machining, in particular to a method for press fitting of a piston.
Background
In an AT transmission, a piston is used as a key part for gear shifting, and the reliability of the piston directly determines the service life of the transmission. In the existing AT products, each gearbox is composed of two types of pistons with large lips, and the diameter of each piston is about 300 mm. During the process of press mounting of the piston, the phenomena of piston flanging, extrusion and strain injury are easily caused, and the working performance of the piston is seriously influenced.
Therefore, it is necessary to develop a press-fitting method of a piston which can solve the above problems.
Disclosure of Invention
The invention aims to provide a method for press fitting of a piston, which aims to solve the problems in the prior art.
The technical scheme adopted for achieving the aim of the invention is that the method for press fitting the piston comprises the following steps:
1) and installing the pressure platform below a pressure rod of the press machine. Wherein the pressure lever has a rotating function.
2) And placing a piston cylinder body on the pressure platform, wherein the opening of a blind hole for installing a piston of the piston cylinder body faces upwards.
3) The piston is horizontally placed on a piston cylinder. And lubricating oil is smeared on the lip and the inner wall of the blind hole of the piston cylinder body.
4) And fixedly connecting the lower end of the pressure lever with the center of the upper surface of the cross-shaped pressure plate. Wherein, the cross clamp plate is located directly over the piston.
5) And opening the press machine, adjusting the pressure value and the rotating speed of the pressure rod to preset values, driving the cross-shaped pressure plate to descend at a constant speed and rotate at a constant speed by the pressure rod, and contacting and press-fitting the piston by the cross-shaped pressure plate.
6) And after the lip of the piston enters the guide groove in the blind hole of the piston cylinder body, closing the rotation function of the pressure lever and continuously pressing the piston.
7) And stopping pressing after the piston is in position.
Further, the piston cylinder body and the piston are both parts on the AT gearbox.
The technical effect of the invention is undoubted, the method of the invention can ensure that the piston lip rotates and is pressed when entering the cylinder body, thereby avoiding the buckling damage, lip flanging and extrusion pulling damage of the piston in the assembling process, limiting the position in time after the lip is assembled in place, and ensuring that the piston can exert good working performance in the environment of about 2Mpa oil pressure of the AT gearbox.
Drawings
FIG. 1 is a schematic view of an apparatus used in the method of the present invention;
fig. 2 is a schematic view of a cross platen.
In the figure: the device comprises a pressure platform 1, a press machine 2, a pressure rod 201, a piston 3, a cross pressure plate 4 and a piston cylinder body 5.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
The embodiment discloses a method for press fitting of a piston, which comprises the following steps:
1) referring to fig. 1, a pressure platform 1 is mounted below a ram 201 of a press 2. Wherein the pressure lever 201 has a rotation function.
2) And placing a piston cylinder body 5 on the pressure platform 1, wherein the blind hole of the piston cylinder body 5 for installing the piston 3 faces upwards.
3) The piston 3 is placed horizontally on the piston cylinder 5. The lower end of the piston 3 is provided with a lip, lubricating oil is smeared on the lip and on the inner wall of the blind hole of the piston cylinder body 5, the lip of the piston 3 is opposite to a guide groove used for installing the lip in the blind hole of the piston cylinder body 5, and the piston cylinder body 5 and the piston 3 are both parts on an AT gearbox.
4) And fixedly connecting the lower end of the pressure lever 201 with the center of the upper surface of the cross-shaped pressure plate 4. Wherein, the cross-shaped pressure plate 4 is positioned right above the piston 3. Referring to fig. 2, the cross-shaped pressing plate 4 is schematically illustrated.
5) And starting the press machine 2, adjusting the pressure value and the rotating speed of the press rod 201 to preset values, driving the cross-shaped press plate 4 to descend at a constant speed and rotate at a constant speed by the press rod 201, and contacting the cross-shaped press plate 4 with the piston 3 and press-fitting the piston 3.
6) After the lip of the piston 3 enters the guide groove of the piston cylinder 5, the rotation function of the pressure lever 201 is closed, and the piston 3 is continuously pressed.
7) After the piston 3 is in place, the pressure application is stopped.
It is worth explaining that when a large-lip piston in an AT transmission is assembled, the piston lip needs to be pressed into a blind hole of a cylinder body, and piston flanging, extrusion and pulling are easily caused in the process.
Claims (2)
1. A method for press fitting of a piston is characterized in that: the method comprises the following steps:
1) the pressure platform (1) is arranged below a pressure rod (201) of the press machine (2); wherein the pressure lever (201) has a rotating function.
2) Placing a piston cylinder body (5) on the pressure platform (1), wherein the opening of a blind hole of the piston cylinder body (5) for installing a piston (3) faces upwards;
3) horizontally placing the piston (3) on a piston cylinder (5); a lip is arranged at the lower end of the piston (3), and lubricating oil is smeared on the lip and the inner wall of the blind hole of the piston cylinder body (5);
4) fixedly connecting the lower end of the pressure lever (201) with the center of the upper surface of the cross-shaped pressure plate (4); wherein the cross pressure plate (4) is positioned right above the piston (3);
5) the press machine (2) is started, the pressure value and the rotating speed of the press rod (201) are adjusted to preset values, the press rod (201) drives the cross-shaped press plate (4) to descend at a constant speed and rotate at a constant speed, and the cross-shaped press plate (4) is in contact with the piston (3) and presses the piston (3);
6) after the lip of the piston (3) enters a guide groove in a blind hole of the piston cylinder body (5), closing the rotation function of the pressure lever (201), and continuing to press the piston (3);
7) and stopping pressing after the piston (3) is in place.
2. A method of press fitting a piston as claimed in claim 1, wherein: the piston cylinder body (5) and the piston (3) are both parts on the AT gearbox.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110939240.8A CN113843601A (en) | 2021-08-16 | 2021-08-16 | Method for press mounting of piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110939240.8A CN113843601A (en) | 2021-08-16 | 2021-08-16 | Method for press mounting of piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113843601A true CN113843601A (en) | 2021-12-28 |
Family
ID=78975774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110939240.8A Pending CN113843601A (en) | 2021-08-16 | 2021-08-16 | Method for press mounting of piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113843601A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130057105A (en) * | 2011-11-23 | 2013-05-31 | 텔스타홈멜 주식회사 | Automatic piston assembly system for the internal engine |
| CN207189122U (en) * | 2017-08-30 | 2018-04-06 | 力茨（江苏）机电装备有限公司 | Piston packing assembly machine |
| CN208543184U (en) * | 2018-08-02 | 2019-02-26 | 锦州锦恒安全装置有限公司 | Gas generator igniter component spinning assembles device |
| CN109421024A (en) * | 2017-12-29 | 2019-03-05 | 湖北航特科技有限责任公司 | A kind of piston press-fitting tool |
| CN209110501U (en) * | 2018-10-10 | 2019-07-16 | 大连豪森今日自动化有限公司 | A kind of clutch sealing ring press-loading device |
| CN210756259U (en) * | 2019-09-29 | 2020-06-16 | 嘉科（无锡）密封技术有限公司 | Assembly devices of piston oil blanket |
| CN213795126U (en) * | 2020-09-22 | 2021-07-27 | 东北林业大学 | Hydraulic cylinder guide sleeve mounting device |
-
2021
- 2021-08-16 CN CN202110939240.8A patent/CN113843601A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130057105A (en) * | 2011-11-23 | 2013-05-31 | 텔스타홈멜 주식회사 | Automatic piston assembly system for the internal engine |
| CN207189122U (en) * | 2017-08-30 | 2018-04-06 | 力茨（江苏）机电装备有限公司 | Piston packing assembly machine |
| CN109421024A (en) * | 2017-12-29 | 2019-03-05 | 湖北航特科技有限责任公司 | A kind of piston press-fitting tool |
| CN208543184U (en) * | 2018-08-02 | 2019-02-26 | 锦州锦恒安全装置有限公司 | Gas generator igniter component spinning assembles device |
| CN209110501U (en) * | 2018-10-10 | 2019-07-16 | 大连豪森今日自动化有限公司 | A kind of clutch sealing ring press-loading device |
| CN210756259U (en) * | 2019-09-29 | 2020-06-16 | 嘉科（无锡）密封技术有限公司 | Assembly devices of piston oil blanket |
| CN213795126U (en) * | 2020-09-22 | 2021-07-27 | 东北林业大学 | Hydraulic cylinder guide sleeve mounting device |
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