CN113427255A - Angle and plane combined floating mechanism applied to flexible assembly of piston connecting rod - Google Patents
Angle and plane combined floating mechanism applied to flexible assembly of piston connecting rod Download PDFInfo
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- CN113427255A CN113427255A CN202110614316.XA CN202110614316A CN113427255A CN 113427255 A CN113427255 A CN 113427255A CN 202110614316 A CN202110614316 A CN 202110614316A CN 113427255 A CN113427255 A CN 113427255A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 79
- 238000009434 installation Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
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- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
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- 230000002393 scratching effect Effects 0.000 description 1
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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
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
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Abstract
The invention provides an angle and plane combined floating mechanism applied to flexible assembly of a piston connecting rod, and relates to the technical field of assembly of piston connecting rods of automobile engines, wherein the combined floating mechanism comprises a shell, an angle floating mechanism and a plane floating mechanism; the front end of the shell is open; the angular floating mechanism and the plane floating mechanism are arranged inside the shell. The invention realizes the automatic correction of different shafts of the pressure head and the pressure head of the piston, the connecting rod, the piston pin and the piston pin snap spring, realizes the flexible installation of the piston connecting rod, and avoids the product scratch caused in the installation or press fitting process; technical support is provided for the full-automatic installation of the piston connecting rod.
Description
Technical Field
The invention relates to the technical field of assembly of piston connecting rods of automobile engines, in particular to an angle and plane combined floating mechanism applied to flexible assembly of piston connecting rods.
Background
The piston connecting rod split-charging line is an important component of an intelligent engine assembly line. The engines of the same family are different in piston connecting rods due to adjustment of parameters such as displacement and power, and therefore higher requirements are put forward on flexibility of split charging of the piston connecting rods. In order to meet the requirement of the installation progress of the whole line, the piston connecting rod split charging needs to have higher efficiency to be matched with the whole line.
The low degree of smoothness results in scratching of the parts. But due to the technical insufficiency; the semi-automatic special machine has to be designed in engineering application, and a high-flexibility full-automatic technical scheme is abandoned, so that scratches in the installation process of the piston connecting rod are reduced as much as possible. The split charging of the piston connecting rod is mainly based on semi-automatic special equipment at present, but the defects of low flexibility degree, low automation degree and the like still exist.
The technical difficulty is how to ensure the coaxial requirements of the piston, the connecting rod, the piston pin and a piston pin clamp spring pressure head, and only ensures the coaxial requirements among the piston, the connecting rod, the piston pin and the piston pin clamp spring pressure head, the technical scheme has the possibility of realization.
The development of highly flexible, automated piston rod assembly workstations has been a key development direction for various large host factories and equipment vendors.
Disclosure of Invention
The invention aims to provide an angle and plane combined floating mechanism applied to flexible assembly of a piston connecting rod, so as to solve the technical problem.
In order to achieve the purpose, the angle and plane combined floating mechanism applied to the flexible assembly of the piston connecting rod comprises a shell, an angle floating mechanism and a plane floating mechanism; the front end of the shell is open; the angular floating mechanism and the plane floating mechanism are arranged inside the shell.
The angular floating mechanism comprises a mounting seat and a radial spherical plain bearing, and the mounting seat is sleeved with the shell; the outer ring of the radial spherical plain bearing is fixedly connected with the mounting seat; one end of the mounting seat close to the opening of the shell is fixedly connected with the flange through a bolt; an angular floating shaft is arranged on the inner ring of the radial spherical plain bearing; the axis of the angular floating shaft can float angularly in the radial spherical plain bearing, a centering ring sleeved with the angular floating shaft is arranged between the angular floating shaft and the flange, and the angular floating shaft is connected with the plane floating mechanism.
Furthermore, an elastic retainer ring for the shaft is arranged at the joint of the radial spherical plain bearing and the angular floating shaft.
Further, the loop-back ring is a polyurethane elastic ring.
It is worth to be noted that the unilateral floating quantity of the axis of the angular floating shaft in the radial spherical plain bearing is 1.5 degrees.
The plane floating mechanism comprises a plane floating shaft, the plane floating shaft penetrates through the inside of the angular floating shaft, and a first thrust bearing is installed at one end, far away from the flange, of the plane floating shaft; one end of the first thrust bearing, which is far away from the flange, is provided with a locking nut; a butterfly spring is arranged between the locking nut and the first thrust bearing; a gap exists between the plane floating shaft and the angular floating shaft, and two groups of 0-shaped rings are arranged in the gap; the plane floating shaft floats radially inside the angular floating shaft; one end of the plane floating shaft, which is far away from the locking nut, is a convex end head, the end head extends out of the angular floating shaft, and a second thrust bearing is arranged between the end head and the angular floating shaft; and a positioning mandrel is arranged on the end head.
Further, the gap size between the planar floating shaft and the angular floating shaft is 0.5 mm.
It is worth mentioning that; the locking nut is used for adjusting pretightening force, so that the plane floating shaft has no play in the axial direction, and has flexible movement in the radial direction, and the radial single side float amount is usually allowed to be 0.25 mm.
The angle and plane combined floating mechanism applied to the flexible assembly of the piston connecting rod further comprises a piston floating positioning mechanism; the piston floating positioning mechanism is arranged at the front end opening of the shell; the piston floating positioning mechanism comprises a V-shaped positioning block, an opening is formed in the V-shaped positioning block, and an installation platform is arranged at one end close to the shell; the positioning mandrel extends out of the V-shaped positioning block through the opening; the V-shaped positioning block and the shell are fixed through a bolt with a spring, and two floating sliding bearings which are arranged in parallel and positioned on the mounting table are arranged between the V-shaped positioning block and the shell; the floating sliding bearing comprises two groove plates, one ends of the groove plates are provided with V-shaped grooves, the ends of the two groove plates, which are provided with the V-shaped grooves, are attached together, and steel balls are placed between the V-shaped grooves of the two groove plates; isolation plates are arranged among the steel balls; the V-shaped positioning block can float along the direction of the V-shaped groove. And a cushion block is arranged at one end of the V-shaped positioning block, which is far away from the shell.
It is worth mentioning that the pretightening force of the spring can be adjusted through the bolt, and the pretightening force of the spring is adjusted to enable the V-shaped positioning block to have flexible floating amount of 2mm along the V-shaped groove direction.
The angular floating mechanism, the plane floating mechanism and the piston floating positioning mechanism are independent and mutually associated, the three mechanisms have certain floating quantity, the angular floating mechanism has angle floating quantity, the plane floating mechanism has radial floating quantity, and the piston floating positioning mechanism has floating quantity along the direction of the V-shaped groove; the angle and the plane position of the positioning mandrel can be automatically adjusted; therefore, coaxiality of the positioning mandrel and a pressure head of a piston, a connecting rod, a piston pin and a piston pin clamp spring to be installed can be guaranteed, flexible installation of the piston connecting rod is achieved, and technical support is provided for full-automatic installation of the piston connecting rod.
The invention has the automatic reset function; the angular floating mechanism can reset under the action of the centering ring, and the plane floating mechanism resets under the action of the 0-shaped ring; the piston floating positioning mechanism resets under the floating sliding bearing.
Advantageous effects
The invention realizes the automatic correction of different axes of the positioning core shaft, the piston, the connecting rod, the piston pin and the piston pin clamp spring pressure head, realizes the flexible installation of the piston connecting rod, and avoids the product scratch caused in the installation or press fitting process; technical support is provided for the full-automatic installation of the piston connecting rod.
Drawings
Fig. 1 is a perspective view showing the overall structure of the combined floating mechanism of the present invention.
Fig. 2 is a schematic view of the overall structure of the combined floating mechanism of the present invention.
Fig. 3 is a schematic structural diagram of the angular floating mechanism of the present invention.
Fig. 4 is a schematic structural diagram of the planar floating mechanism of the present invention.
Fig. 5 is a schematic structural diagram of the piston floating positioning mechanism of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.
Aiming at the problems in the prior art, the embodiment of the invention provides an angle and plane combined floating mechanism applied to flexible assembly of a piston connecting rod.
Examples
An angle and plane combined floating mechanism applied to flexible assembly of a piston connecting rod comprises a shell 1, an angle floating mechanism 2, a plane floating mechanism 3 and a piston floating positioning mechanism 4; the front end of the shell is open; the angular floating mechanism 2 and the plane floating mechanism 3 are arranged in the shell 1, and the piston floating positioning mechanism 4 is arranged at the front end opening of the shell.
The angular floating mechanism 2 comprises a mounting seat 5 and a radial spherical plain bearing 6, and the mounting seat 5 is sleeved with the shell 1; the outer ring of the radial spherical plain bearing 6 is fixedly connected with the mounting seat 5; one end of the mounting seat 5 close to the opening of the shell is fixedly connected with a flange 7 through bolts; an angular floating shaft 8 is arranged on the inner ring of the radial spherical plain bearing 6; the axis of the angular floating shaft 8 can float angularly in the radial spherical plain bearing 6, a centering ring 9 sleeved with the angular floating shaft 8 is arranged between the angular floating shaft 8 and the flange 7, and the angular floating shaft 8 is connected with the plane floating mechanism 3. And an elastic retainer ring 10 for the shaft is arranged at the joint of the radial spherical plain bearing 6 and the angular floating shaft 8. The centering ring 9 is a polyurethane elastic ring.
The unilateral floating quantity of the axis of the angular floating shaft 8 in the radial spherical plain bearing 6 is 1.5 degrees.
The plane floating mechanism 3 comprises a plane floating shaft 11, the plane floating shaft 11 penetrates through the inside of the angular floating shaft 8, and a first thrust bearing 12 is installed at one end, far away from the flange 7, of the plane floating shaft 11; one end of the first thrust bearing 12, which is far away from the flange 7, is provided with a locking nut 13; a butterfly spring 14 is arranged between the locking nut 13 and the first thrust bearing 12; a gap of 0.5mm exists between the plane floating shaft 11 and the angular floating shaft 8, and two groups of 0-shaped rings 15 are arranged in the gap; the plane floating shaft 11 can float radially inside the angular floating shaft 8; one end of the plane floating shaft 11, which is far away from the locking nut 13, is a convex end head 16, the end head 16 extends out of the angular floating shaft 8, and a second thrust bearing 17 is arranged between the end head 16 and the angular floating shaft 8; a positioning mandrel 18 is mounted on the end.
The locking nut 13 is used for adjusting the pretightening force, so that the plane floating shaft 11 has no play in the axial direction, and has flexible movement in the radial direction, and the radial single side floating amount is usually allowed to be 0.25 mm.
The piston floating positioning mechanism 4 comprises a V-shaped positioning block 19, an opening is formed in the V-shaped positioning block 19, and an installation platform 20 is arranged at one end close to the shell; the positioning mandrel 18 extends out of the V-shaped positioning block 19 through the opening; the V-shaped positioning block 19 and the shell 1 are fixed through a bolt with a spring, and two floating sliding bearings which are arranged in parallel and positioned on the mounting table 20 are arranged between the V-shaped positioning block 19 and the shell 1; the floating sliding bearing comprises two groove plates 21, one ends of the groove plates 21 are provided with V-shaped grooves 22, the ends of the two groove plates 21 with the V-shaped grooves 22 are attached together, and steel balls 23 are placed between the V-shaped grooves 22 of the two groove plates 21; a separation plate 24 is arranged between the steel balls 23; the V-shaped positioning block 19 can float along the V-shaped groove 22. And a cushion block 25 is arranged at one end of the V-shaped positioning block 19 far away from the shell 1.
The pretightening force of the spring can be adjusted through the bolt, and the pretightening force of the spring is adjusted to enable the V-shaped positioning block 19 to have flexible floating amount of 2mm along the direction of the V-shaped groove 22.
The combined floating mechanism comprises an angular floating mechanism 2, a plane floating mechanism 3 and a piston floating positioning mechanism 4; the three mechanisms have certain floating amount; thereby a flexible mounting can be achieved. When the device is actually used, the piston is preliminarily limited through the V-shaped positioning block 19, and the connecting rod to be installed, the piston pin clamp spring pressure head, the positioning mandrel 18 and the axis of the V-shaped positioning block 19 are preliminarily positioned on the same straight line through other positioning devices; the mounting seat 5 is pushed by other driving mechanisms, and then the positioning mandrel 18 is pushed to press fit the piston with a connecting rod, a piston pin and a piston pin clamp spring pressure head, and the position of the positioning mandrel 18 in the angle and plane direction can be adjusted in the press fit process due to the floating amount of the three mechanisms; the flexible mounting does not cause scratches. The floating mechanism of the present invention is assisted by other auxiliary devices, such as a driving mechanism, a positioning mechanism, etc., during operation. The auxiliary device will not be described in detail here, but the inventive improvement is the flexible press-fitting of the ram, i.e. the positioning mandrel 18.
Although the embodiments of the present invention have been described in detail hereinabove, it is apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the following claims. Moreover, the invention as described herein is capable of other embodiments and of being practiced or of being carried out in various ways.
Claims (9)
1. An angle and plane combined floating mechanism applied to flexible assembly of a piston connecting rod is characterized in that the combined floating mechanism comprises a shell, an angle floating mechanism and a plane floating mechanism; the front end of the shell is open; the angular floating mechanism and the plane floating mechanism are arranged in the shell;
the angular floating mechanism comprises a mounting seat and a radial spherical plain bearing, and the mounting seat is sleeved with the shell; the outer ring of the radial spherical plain bearing is fixedly connected with the mounting seat; one end of the mounting seat close to the opening of the shell is fixedly connected with the flange through a bolt; an angular floating shaft is arranged on the inner ring of the radial spherical plain bearing; the axis of the angular floating shaft can float angularly in the radial spherical plain bearing, a centering ring sleeved with the angular floating shaft is arranged between the angular floating shaft and the flange, and the angular floating shaft is connected with a plane floating mechanism;
the plane floating mechanism comprises a plane floating shaft, the plane floating shaft penetrates through the inside of the angular floating shaft, and a first thrust bearing is installed at one end, far away from the flange, of the plane floating shaft; one end of the first thrust bearing, which is far away from the flange, is provided with a locking nut; a butterfly spring is arranged between the locking nut and the first thrust bearing; a gap exists between the plane floating shaft and the angular floating shaft, and two groups of 0-shaped rings are arranged in the gap; the plane floating shaft floats radially inside the angular floating shaft; one end of the plane floating shaft, which is far away from the locking nut, is a convex end head, the end head extends out of the angular floating shaft, and a second thrust bearing is arranged between the end head and the angular floating shaft; and a positioning mandrel is arranged on the end head.
2. The angle and plane combined floating mechanism applied to the flexible assembly of the piston connecting rod as claimed in claim 1, wherein a shaft circlip is arranged at the joint of the angular joint bearing and the angular floating shaft.
3. The combined angle and plane floating mechanism for flexible assembly of piston-connecting rod as claimed in claim 2, wherein the return ring is a polyurethane elastic ring.
4. The combined angle and plane floating mechanism applied to the flexible assembly of the piston connecting rod is characterized in that the unilateral floating quantity of the axis of the angular floating shaft inside the radial spherical plain bearing is 1.5 degrees.
5. The combined angle and plane floating mechanism applied to the flexible assembly of the piston connecting rod is characterized in that the size of a gap between the plane floating shaft and the angle floating shaft is 0.5 mm.
6. The angle and plane combined floating mechanism applied to the flexible assembly of the piston connecting rod is characterized in that the radial unilateral floating amount of the plane floating shaft inside the angle floating shaft is 0.25 mm.
7. The angle and plane combined floating mechanism applied to the flexible assembly of the piston connecting rod is characterized by further comprising a piston floating positioning mechanism, wherein the piston floating positioning mechanism is arranged at the front end opening of the shell;
the piston floating positioning mechanism comprises a V-shaped positioning block, an opening is formed in the V-shaped positioning block, and an installation platform is arranged at one end close to the shell; the positioning mandrel extends out of the V-shaped positioning block through the opening; the V-shaped positioning block and the shell are fixed through a bolt with a spring, and two floating sliding bearings which are arranged in parallel and positioned on the mounting table are arranged between the V-shaped positioning block and the shell; the floating sliding bearing comprises two groove plates, one ends of the groove plates are provided with V-shaped grooves, the ends of the two groove plates, which are provided with the V-shaped grooves, are attached together, and steel balls are placed between the V-shaped grooves of the two groove plates; isolation plates are arranged among the steel balls; the V-shaped positioning block can float along the direction of the V-shaped groove.
8. The combined angle and plane floating mechanism for flexible assembly of piston rod according to claim 7, wherein the end of the V-shaped positioning block away from the housing is provided with a cushion block.
9. The angle and plane combined floating mechanism applied to the flexible assembly of the piston connecting rod as claimed in claim 7 or 8, wherein the floating amount of the V-shaped positioning block along the V-shaped groove direction is 2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110614316.XA CN113427255B (en) | 2021-06-02 | 2021-06-02 | Angle and plane combined floating mechanism applied to flexible assembly of piston connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110614316.XA CN113427255B (en) | 2021-06-02 | 2021-06-02 | Angle and plane combined floating mechanism applied to flexible assembly of piston connecting rod |
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| CN113427255A true CN113427255A (en) | 2021-09-24 |
| CN113427255B CN113427255B (en) | 2024-05-31 |
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| CN202110614316.XA Active CN113427255B (en) | 2021-06-02 | 2021-06-02 | Angle and plane combined floating mechanism applied to flexible assembly of piston connecting rod |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107520747A (en) * | 2017-09-11 | 2017-12-29 | 南宁宇立仪器有限公司 | A kind of constant force floating installation |
| CN110450052A (en) * | 2019-08-09 | 2019-11-15 | 安徽理工大学 | A kind of milling robot spindle floating mechanism |
| CN110814699A (en) * | 2019-10-29 | 2020-02-21 | 上海天永智能装备股份有限公司 | Axial floating pressure head |
| CN212734880U (en) * | 2020-07-03 | 2021-03-19 | 奇石乐机电科技(上海)有限公司 | Floating press-fitting mechanism |
| CN112576620A (en) * | 2020-12-31 | 2021-03-30 | 台州科锦轴承有限公司 | Rod end joint bearing and rod end joint bearing assembling equipment and assembling method |
| CN112775895A (en) * | 2021-01-26 | 2021-05-11 | 力源液压（苏州）有限公司 | Integrative pressure equipment frock of oil blanket, bearing |
| CN215658915U (en) * | 2021-06-02 | 2022-01-28 | 上海天永智能装备股份有限公司 | Angle and plane combined floating mechanism applied to flexible assembly of piston connecting rod |
-
2021
- 2021-06-02 CN CN202110614316.XA patent/CN113427255B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107520747A (en) * | 2017-09-11 | 2017-12-29 | 南宁宇立仪器有限公司 | A kind of constant force floating installation |
| CN110450052A (en) * | 2019-08-09 | 2019-11-15 | 安徽理工大学 | A kind of milling robot spindle floating mechanism |
| CN110814699A (en) * | 2019-10-29 | 2020-02-21 | 上海天永智能装备股份有限公司 | Axial floating pressure head |
| CN212734880U (en) * | 2020-07-03 | 2021-03-19 | 奇石乐机电科技(上海)有限公司 | Floating press-fitting mechanism |
| CN112576620A (en) * | 2020-12-31 | 2021-03-30 | 台州科锦轴承有限公司 | Rod end joint bearing and rod end joint bearing assembling equipment and assembling method |
| CN112775895A (en) * | 2021-01-26 | 2021-05-11 | 力源液压（苏州）有限公司 | Integrative pressure equipment frock of oil blanket, bearing |
| CN215658915U (en) * | 2021-06-02 | 2022-01-28 | 上海天永智能装备股份有限公司 | Angle and plane combined floating mechanism applied to flexible assembly of piston connecting rod |
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| CN113427255B (en) | 2024-05-31 |
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