CN109396795B - Needle bearing outer ring pressure head mechanism - Google Patents
Needle bearing outer ring pressure head mechanism Download PDFInfo
- Publication number
- CN109396795B CN109396795B CN201811394336.5A CN201811394336A CN109396795B CN 109396795 B CN109396795 B CN 109396795B CN 201811394336 A CN201811394336 A CN 201811394336A CN 109396795 B CN109396795 B CN 109396795B
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- Prior art keywords
- sleeve
- shaft
- guide
- outer ring
- ring
- Prior art date
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- 238000005096 rolling process Methods 0.000 claims abstract description 17
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical group C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 6
- 210000004907 gland Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a needle bearing outer ring pressure head mechanism which comprises a guide piece, a pressure sleeve and a shaft sleeve, wherein the pressure sleeve is in sliding connection with the guide piece, a flange plate is fixed at one end part of the shaft sleeve, a mounting groove is formed between the flange plate and the guide piece, an end cover is fixed at the other end part of the shaft sleeve, a thrust bearing is arranged in the shaft sleeve close to two ends of the shaft sleeve, the thrust bearing comprises a seat ring with a ball socket at one side, a rolling body and a shaft ring with a ball socket at one side, the seat ring is abutted with the shaft sleeve, the side with the ball socket at the seat ring faces towards the rolling body, the shaft ring is abutted with an oilless bearing, the side with the ball socket at the shaft ring faces away from the rolling body, and the oilless bearing is in sliding connection with the pressure sleeve. According to the needle bearing outer ring pressure head mechanism, the guide piece and the pressure sleeve float in the radial direction, so that the guide piece is aligned with the central hole of the engine cylinder body, the needle bearing outer ring can enter the cylinder body quickly and smoothly, and the pressure mounting efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of engine cylinder body assembly, and particularly relates to a needle bearing outer ring pressure head mechanism.
Background
During assembly of the engine block, the needle bearing outer ring needs to be fitted inside the engine block. A ram mechanism is commonly used in the industry to accomplish this. However, the existing pressure head does not have a floating function, namely when the positioning end of the pressure head deviates from the central hole of the engine cylinder body, the pressure head cannot automatically correct the position, and the outer ring of the needle bearing is easy to clamp and collide with the cylinder body in the press-fitting process, so that the needle bearing cannot be smoothly pressed into the cylinder body, the press-fitting speed of the needle bearing is low, and the operation efficiency is reduced; in addition, the ram is retracted and cannot be separated from the press, so that the press cannot press the needle bearing outer rings at different positions respectively.
Disclosure of Invention
The invention aims to solve the technical problem that the needle bearing outer ring pressure head mechanism solves the technical problem that a pressure head cannot automatically correct the position in the prior art.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a needle bearing outer ring pressure head mechanism which characterized in that: including coaxial setting's guide, pressure cover and axle sleeve, press the cover to be located the outside of guide and with guide sliding connection, the axle sleeve is located the outside of pressure cover, and axle sleeve one end is fixed with the ring flange, be provided with the mounting groove that supplies bearing outer loop to be fixed between ring flange and the guide, the other end of axle sleeve is fixed with the end cover, is close to the both ends of axle sleeve the inside of axle sleeve is provided with thrust bearing, thrust bearing includes one side and takes the pedestal ring of ball socket, rolling element to and one side and take the pedestal ring of ball socket, the pedestal ring and axle sleeve butt, and one side that takes the ball socket in the pedestal ring is towards the rolling element, the pedestal ring is connected with oilless bearing, and one side in the pedestal ring is facing away from the rolling element, oilless bearing and pressure cover sliding connection.
Preferably, a positioning bushing is arranged between the thrust bearings inside the shaft sleeve.
Preferably, polyurethane rings are respectively arranged between the two ends of the positioning bushing and the thrust bearing.
Preferably, a guide shaft is fixed outside the shaft sleeve, the guide shaft is parallel to the pressing sleeve, and a reset spring is arranged in the guide shaft.
Preferably, the end parts of the guide shaft and the pressing sleeve are provided with connecting frames, and the end parts of the guide shaft are fixed with the connecting frames through oil-free bushings.
Preferably, a gland is arranged at the end part of the pressure sleeve, and a gasket is arranged between the gland and the pressure sleeve.
Preferably, adjusting pads are respectively arranged between the shaft collar and the end cover and between the shaft collar and the flange plate in the shaft sleeve.
Preferably, the guide piece comprises a guide rod and a guide sleeve positioned at the end part of the guide rod, and the guide sleeve is connected with the guide rod through a cotter pin.
Preferably, a guide head is fixed at the end of the guide rod inside the guide sleeve.
Preferably, an internal thread cylindrical pin is arranged in the guide rod, a guide groove is axially formed in the pressing sleeve, and the internal thread cylindrical pin slides in the guide groove.
The invention has the beneficial effects that: the invention discloses a needle bearing outer ring pressure head mechanism which comprises a guide piece, a pressure sleeve and a shaft sleeve, wherein the guide piece, the pressure sleeve and the shaft sleeve are coaxially arranged, the pressure sleeve is positioned outside the guide piece and is in sliding connection with the guide piece, the shaft sleeve is positioned outside the pressure sleeve, a flange plate is fixed at one end part of the shaft sleeve, a mounting groove for fixing an outer ring of the needle bearing is arranged between the flange plate and the guide piece, an end cover is fixed at the other end part of the shaft sleeve, a thrust bearing is arranged inside the shaft sleeve close to two ends of the shaft sleeve, the thrust bearing comprises a seat ring with a ball socket at one side, a rolling body and a shaft ring with a ball socket at one side, the seat ring is abutted with the shaft sleeve, one side with the ball socket faces towards the rolling body, the shaft ring is connected with an oilless bearing, one side with the ball socket at the shaft ring faces away from the rolling body, and the oilless bearing is in sliding connection with the pressure sleeve. According to the needle bearing outer ring pressure head mechanism, the guide piece and the pressure sleeve float in the radial direction, so that the guide piece is aligned with the central hole of the engine cylinder body, the needle bearing outer ring can enter the cylinder body quickly and smoothly, and the pressure mounting efficiency is improved.
Drawings
FIG. 1 is a cross-sectional view of a needle bearing outer ring ram mechanism;
FIG. 2 is a schematic structural view of a thrust bearing;
FIG. 3 is a schematic diagram of a connection structure of a needle bearing outer ring ram mechanism to an engine block;
FIG. 4 is a cross-sectional view of the needle bearing outer ring ram mechanism and the engine block;
reference numerals in the drawings, 1-guide piece, 1.1-guide rod and 1.2-guide sleeve; 2-pressing the sleeve; 3-shaft sleeve; 4-cotter pins; 5-a guide head; 6-flange plates and 6.1-mounting grooves; 7-end caps; 8-thrust bearings, 8.1-races, 8.1.1-ball-bearing-in-race side, 8.2-rolling bodies, 8.3-shaft-rings, and 8.3.1-ball-bearing-in-shaft-rings side; 9-oilless bearings; 10-adjusting pad; 11-positioning a bushing; 12-a gasket; 13-polyurethane rings; 14-a bushing; 15-mounting a bracket; 16-positioning sleeve; 17-a guide shaft; 18-a return spring; 19-a connecting frame; 20-an oilless bushing; 21-gland; 22-an internal thread cylindrical pin; 23-needle bearing outer ring.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
the needle bearing outer ring pressure head mechanism comprises a guide piece 1, a pressure sleeve 2 and a shaft sleeve 3 which are coaxially arranged as shown in figure 1. In this embodiment, the guide member 1 includes a guide rod 1.1 and a guide sleeve 1.2 located at an end of the guide rod, a through groove 1.2.1 is formed in the guide sleeve 1.2, and the guide sleeve 1.2 is connected with the guide rod 1.1 through a cotter pin 4. The split pin connection is adopted, so that the damage to the end part of the guide sleeve, which is contacted with the engine cylinder body, caused by overlarge axial stress of the guide sleeve after the guide sleeve is abutted against the engine cylinder body can be avoided. A guide head 5 is fixed at the end of the inner guide rod 1.1 positioned in the guide sleeve. The guide head is used for positioning with the cylinder body center hole. The pressing sleeve 2 is positioned outside the guide rod 1.1 and is in sliding connection with the guide rod 1.1. The shaft sleeve 3 is positioned outside the pressing sleeve 2, a flange plate 6 is fixed at one end of the shaft sleeve 3, the flange plate 6 is sleeved outside the guide rod 1.1, and a mounting groove 6.1 for fixing the needle bearing outer ring 23 is arranged between the flange plate 6 and the guide rod 1.1. An end cap 7 is fixed to the other end of the sleeve 3. In order to realize the radial floating of the guide rod and the pressing sleeve, thrust bearings 8 are respectively arranged in the shaft sleeves 3 near the two ends of the shaft sleeve. As shown in fig. 2, the thrust bearing 8 comprises a ball-and-socket race 8.1, rolling elements 8.2, and a ball-and-socket race 8.3. The seat ring 8.1 is abutted with the shaft sleeve 3, one side face 8.1.1 with a ball socket in the seat ring faces the rolling body 8.2, the shaft ring 8.3 is connected with the oilless bearing 9, and one side face 8.3.1 with the ball socket in the shaft ring faces away from the rolling body 8.2. An adjusting pad 10 is respectively arranged between the two thrust bearings 8 and the flange 6 and between the two end covers 7. In order to prevent the two thrust bearings from axial play, a positioning bushing 11 is arranged between the two thrust bearings 8, and a gasket 12 is arranged between the positioning bushing 11 and the shaft collar 8.3. In order to overcome the gravity of the guide rod and avoid sagging of the guide rod when placed transversely, a polyurethane ring 13 is also arranged between the positioning bushing 11 and the spacer 12. The polyurethane ring is arranged to ensure that the center line of the guide rod is consistent with the center line of the shaft sleeve. The oilless bearing 9 is in sliding connection with the pressing sleeve 2. In the present embodiment, there are provided two oilless bearings 9, and the positions of the two oilless bearings 9 correspond to the positions of the thrust bearings 8. In order to prevent the two oilless bearings from axial play, a bushing 14 is arranged between the two oilless bearings 9.
As shown in fig. 3 and 4, in operation, the guide head in the guide rod is positioned with the central bore of the engine block. If the guide head and the central hole of the engine cylinder body have deviation, the shaft collar can move radially along the rolling body due to the existence of the thrust bearing, so that the guide rod and the pressing sleeve are driven to float radially. Therefore, the guide rod is radially adjusted, so that the guide head in the guide rod is aligned with the central hole of the engine cylinder body, the outer ring of the needle bearing can quickly and smoothly enter the cylinder body, and the press-fitting efficiency is improved.
In this embodiment, two mounting brackets 15 are fixed in the shaft sleeve 3, a positioning sleeve 16 is fixed inside the mounting brackets 15, and a guide shaft 17 is fixed in the positioning sleeve 16. A spacer 12 is fixed to the end of the guide shaft at one side of the mounting bracket. The guide shaft 17 is arranged in parallel with the press sleeve 2, and a return spring 18 is arranged in the guide shaft 17. The end of the guide shaft 17 and the end of the pressing sleeve 2 are provided with a connecting frame 19, and the end of the guide shaft 17 is fixed with the connecting frame 19 through an oilless bushing 20. One end of the return spring 18 is abutted with the positioning sleeve 16 through the gasket 12, and the other side of the return spring 18 is abutted with the oil-free bushing 20 through the gasket 12. A washer 12 is fixed to the end of the guide shaft 17 on the oilless bushing side. A gland 21 is fixed at the end of the pressure sleeve 2, and a gasket 12 is arranged between the gland 21 and the pressure sleeve 2. After the pressing machine applies force to the pressing cover, the pressing cover applies external force to the pressing sleeve, the pressing sleeve applies force to the oil-free bush through the connecting support, so that the oil-free bush presses the reset spring, when the pressing sleeve presses the outer ring of the needle bearing into the engine cylinder, the pressing machine does not apply force to the pressing cover, at the moment, the reset spring releases the compressed elastic force, the reset spring drives the oil-free bush to slide along the guide shaft, and the oil-free bush drives the pressing sleeve to return through the connecting support. When the oil-free bushing reaches the end position of the guide shaft, the pressure head stops and stops to be withdrawn due to the limit of the end gasket of the guide shaft, so that the pressure head is separated from the press.
In order to make the press sleeve move only in the axial direction but not rotate in the radial direction in the press sleeve pressing process, in this embodiment, an internal thread cylindrical pin 22 is disposed in the guide rod 1.1, and a guide groove (not labeled in the figure) is axially formed in the press sleeve 2, and the internal thread cylindrical pin 22 slides in the guide groove. The internal thread cylindrical pin plays a role in limiting the relative position of the guide rod and the pressing sleeve.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The utility model provides a needle bearing outer ring pressure head mechanism which characterized in that: comprises a guide piece, a pressing sleeve and a shaft sleeve which are coaxially arranged, wherein the pressing sleeve is positioned outside the guide piece and is in sliding connection with the guide piece, the shaft sleeve is positioned outside the pressing sleeve, a flange plate is fixed at one end part of the shaft sleeve, a mounting groove for fixing an outer ring of a needle bearing is arranged between the flange plate and the guide piece, an end cover is fixed at the other end part of the shaft sleeve, two ends close to the shaft sleeve are respectively provided with a thrust bearing, the thrust bearing comprises a seat ring with a ball socket at one side, a rolling body and a shaft ring with a ball socket at one side, the seat ring is abutted with the shaft sleeve, one side with the ball socket at the seat ring faces the rolling body, the shaft ring is connected with an oilless bearing, one side with the ball socket at the shaft ring faces away from the rolling body, the oilless bearing is in sliding connection with the pressing sleeve,
the outside of the shaft sleeve is fixed with a guide shaft which is parallel to the pressing sleeve, the guide shaft is internally provided with a reset spring, the ends of the guide shaft and the pressing sleeve are provided with a connecting frame, the ends of the guide shaft are fixed with the connecting frame through oil-free bushings, the ends of the pressing sleeve are provided with a pressing cover, a gasket is arranged between the pressing cover and the pressing sleeve,
the guide piece comprises a guide rod and a guide sleeve positioned at the end part of the guide rod, the guide sleeve is connected with the guide rod through a cotter pin, and a guide head is fixed at the end part of the guide rod positioned in the guide sleeve.
2. The needle bearing outer ring ram mechanism of claim 1, wherein: and a positioning bushing is arranged between the thrust bearings in the shaft sleeve.
3. The needle bearing outer ring ram mechanism of claim 2, wherein: polyurethane rings are respectively arranged between the two ends of the positioning bushing and the thrust bearing.
4. The needle bearing outer ring ram mechanism of claim 1, wherein: and adjusting pads are respectively arranged between the shaft collar and the end cover and between the shaft collar and the flange plate in the shaft sleeve.
5. The needle bearing outer ring ram mechanism of claim 1, wherein: the guide rod is internally provided with an internal thread cylindrical pin, the pressing sleeve is axially provided with a guide groove, and the internal thread cylindrical pin slides in the guide groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811394336.5A CN109396795B (en) | 2018-11-21 | 2018-11-21 | Needle bearing outer ring pressure head mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811394336.5A CN109396795B (en) | 2018-11-21 | 2018-11-21 | Needle bearing outer ring pressure head mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109396795A CN109396795A (en) | 2019-03-01 |
| CN109396795B true CN109396795B (en) | 2024-04-16 |
Family
ID=65474533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811394336.5A Active CN109396795B (en) | 2018-11-21 | 2018-11-21 | Needle bearing outer ring pressure head mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109396795B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110773975A (en) * | 2019-10-29 | 2020-02-11 | 天永机械电子（太仓）有限公司 | Input shaft rear bearing pressure head capable of automatically overcoming coaxiality error |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1810268C (en) * | 1991-01-09 | 1993-04-23 | Белорусский Институт Инженеров Железнодорожного Транспорта | Device for assembling parts of shaft-bushing type by press-fitting |
| RU51924U1 (en) * | 2005-10-20 | 2006-03-10 | Открытое акционерное общество "АВТОВАЗ" | ADAPTER FOR INSTALLATION OF SEAL RINGS |
| CN103273309A (en) * | 2013-05-20 | 2013-09-04 | 合肥凯邦电机有限公司 | Center-adjusting device for pressing and assembling bearing |
| CN103447804A (en) * | 2013-09-25 | 2013-12-18 | 十堰达博科工贸有限公司 | Pressure head device capable of automatically correcting center positioning deviation |
| CN104368964A (en) * | 2014-10-31 | 2015-02-25 | 无锡市安捷脚手架有限公司 | Floating type bolt tightening device |
| CN106141629A (en) * | 2015-03-23 | 2016-11-23 | 湖北汽车工业学院 | A kind of suspension type bearing press |
| CN108591169A (en) * | 2018-06-04 | 2018-09-28 | 安徽瑞铁轨道装备有限公司 | A kind of railway wheel is top to bearing press mounting constant pressure and the oil cylinder of quick change guide sleeve |
| CN210254992U (en) * | 2019-04-18 | 2020-04-07 | 大连现代辅机开发制造有限公司 | Split type main bearing bush press-fitting device |
-
2018
- 2018-11-21 CN CN201811394336.5A patent/CN109396795B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1810268C (en) * | 1991-01-09 | 1993-04-23 | Белорусский Институт Инженеров Железнодорожного Транспорта | Device for assembling parts of shaft-bushing type by press-fitting |
| RU51924U1 (en) * | 2005-10-20 | 2006-03-10 | Открытое акционерное общество "АВТОВАЗ" | ADAPTER FOR INSTALLATION OF SEAL RINGS |
| CN103273309A (en) * | 2013-05-20 | 2013-09-04 | 合肥凯邦电机有限公司 | Center-adjusting device for pressing and assembling bearing |
| CN103447804A (en) * | 2013-09-25 | 2013-12-18 | 十堰达博科工贸有限公司 | Pressure head device capable of automatically correcting center positioning deviation |
| CN104368964A (en) * | 2014-10-31 | 2015-02-25 | 无锡市安捷脚手架有限公司 | Floating type bolt tightening device |
| CN106141629A (en) * | 2015-03-23 | 2016-11-23 | 湖北汽车工业学院 | A kind of suspension type bearing press |
| CN108591169A (en) * | 2018-06-04 | 2018-09-28 | 安徽瑞铁轨道装备有限公司 | A kind of railway wheel is top to bearing press mounting constant pressure and the oil cylinder of quick change guide sleeve |
| CN210254992U (en) * | 2019-04-18 | 2020-04-07 | 大连现代辅机开发制造有限公司 | Split type main bearing bush press-fitting device |
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| Publication number | Publication date |
|---|---|
| CN109396795A (en) | 2019-03-01 |
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