CN115419512A - Cylinder body tile cover positioning and mistake-proofing structure and assembly method - Google Patents
Cylinder body tile cover positioning and mistake-proofing structure and assembly method Download PDFInfo
- Publication number
- CN115419512A CN115419512A CN202211058099.1A CN202211058099A CN115419512A CN 115419512 A CN115419512 A CN 115419512A CN 202211058099 A CN202211058099 A CN 202211058099A CN 115419512 A CN115419512 A CN 115419512A
- Authority
- CN
- China
- Prior art keywords
- tile cover
- tile
- positioning
- arc
- mistake proofing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000007704 transition Effects 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 5
- 238000005336 cracking Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/18—Other cylinders
-
- 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
-
- 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
- B23P19/04—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 assembling or disassembling parts
- B23P19/042—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 assembling or disassembling parts specially adapted for combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/006—Camshaft or pushrod housings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a cylinder body tile cover positioning and mistake proofing structure and an assembly method. It includes that the connecting portion of cylinder body skirt portion left and right sides and tile lid adopt circular-arc undercut groove excessive, circular-arc undercut inslot side is equipped with the location boss, location boss inboard adopts the circular arc structure, through the high different location boss of left and right sides and the spacing step cooperation of tile lid. The cylinder body skirt part and the tile cover are connected by adopting the arc-shaped undercut groove transition, the stress concentration is reduced, the tile cover is positioned by adopting a limiting step type independent structure, the tile cover has certain elasticity, the clamping force on the tile cover can be effectively reduced when the tile cover is positioned, the accurate positioning of the tile cover is realized by the centering characteristic of the tile cover, the deformation of a semicircular hole of the tile cover is reduced, and meanwhile, the positioning bosses on the left side and the right side are designed into different heights and are matched with the limiting steps of the tile cover, so that the mistake proofing purpose of reversely assembling the tile cover is realized.
Description
Technical Field
The invention belongs to the technical field of automobile engines, and particularly relates to a cylinder block and tile cover positioning and mistake proofing structure and an assembling method.
Background
The crankshaft hole is a key part on the cylinder body, the precision required by the product is very high, and the roundness is about 0.008 mm; due to the functional requirements, after the crankshaft hole is machined and before the crankshaft is installed, the crankshaft hole bush cover needs to be detached again, and after the crankshaft is assembled, the crankshaft bush cover is reassembled.
In order to guarantee that the circularity in bent axle hole tile lid after the secondary assembly, bent axle hole can recover, present common scheme: as shown in FIG. 1, other anti-error structural designs such as anti-installation of reverse bosses, asymmetric arrangement of bolt holes and the like are required to be added for positioning the positioning ring and the side surface of the tile cover.
The positioning ring scheme is characterized in that a special positioning ring needs to be designed, positioning ring holes need to be machined in the cylinder body and the tile cover, the hole diameter and the center distance are tight, the actual machining tool cost and the equipment labor hour cost are high, the price of the positioning ring is also high, each tile cover needs two positioning rings to realize positioning, and taking 6 cylinder machines as an example, 14 positioning rings are needed, so that the whole machine cost is high. Due to the particularity of the installation of the positioning ring, even if the tolerance requirements of the diameter of the positioning ring and the center distance of the positioning ring hole are strict, in order to ensure smooth installation, the positioning ring hole is generally designed to be in interference fit on the tile cover, and is designed to be in clearance fit on the cylinder body, the precision of the positioning ring always has large fluctuation due to the tolerance, the positioning ring also has deformation in different degrees in the installation process, and the problem causes a large application problem of the positioning ring scheme, and the positioning ring scheme can be installed by rotating 180 degrees, so that the problem of easy installation and reverse installation also exists, and an independent error prevention countermeasure needs to be designed; in order to avoid the problems of high positioning precision and high cost of a positioning ring, the side positioning of the tile cover fully utilizes the characteristic of low requirement on axial positioning of a crankshaft hole, the side surface of the tile cover and a positioning surface processed by the cylinder bearing seat are utilized, the radial positioning of the tile cover is realized through micro interference fit, the scheme is mainly processing of a surface, the cutter cost of a surface milling cutter is low, due to the design of micro interference, the positioning surface has the characteristic of automatic centering, the positioning precision is high, but because the positioning surface processed by the cylinder bearing seat is vertical to the mounting combination surface of the tile cover, large fillet transition cannot be designed, a main area with stress concentration is formed at a bottom right angle of the positioning surface of the bearing seat, the bearing seat has large load and severe practical environment, the bearing seat has great risk, the possibility of being capable of rotating for 180 degrees and simultaneously exists, and an anti-misloading countermeasure needs to be independently designed for coping. The cylinder body tile cover adopts the process of cracking, can solve the positioning accuracy and the mistake proofing problem that the location exists of holding ring and tile cover side location basically, but the process of cracking puts forward higher requirement to the material of cylinder body, and the equipment that the process of cracking needs is also comparatively expensive.
Disclosure of Invention
The invention aims to solve the defects existing in the background technology and provides a cylinder body tile cover positioning and mistake-proofing structure and an assembling method.
The technical scheme adopted by the invention is as follows: the utility model provides a cylinder body tile lid location and mistake proofing structure, it is excessive to adopt circular-arc heavy cut groove including the connecting portion of cylinder body skirt portion left and right sides and tile lid, circular-arc heavy cut groove inboard is equipped with the location boss, location boss inboard adopts the circular arc structure, through the location boss of the left and right sides difference in height and the spacing step cooperation of tile lid.
In a further preferable structure, the wall thickness of the positioning boss is 3-5mm.
In a further preferable structure, the height difference of the positioning bosses at the left side and the right side is 0.5-0.8mm.
In a further preferred construction, the material of the locating boss is HT275.
In a further preferable structure, the radian of the arc structure at the inner side of the positioning boss is 0.3-0.6mm.
In a further preferred structure, the clamping force of the tile cover is 5-25N.
In a further preferred structure, the height of the positioning boss on the left side is 3mm, and the height of the boss on the right side is 3.5mm.
Further preferred structure, the spacing step of tile lid adopts 20 chamfers, the tile lid base adopts 15 chamfers.
In a further preferable structure, the arc diameter of the arc-shaped undercut groove is 8mm, and the straight line parts at two ends of the arc-shaped undercut groove are inclined at a small angle of 15 degrees.
A cylinder body tile cover positioning and mistake proofing structure assembling method comprises the following steps:
step 1: lubricating oil is coated on two sides of the tile cover;
and 2, step: placing the tile cover on a main bearing seat of the skirt part of the cylinder body;
and step 3: pressing the tile cover into a positioning boss of the spindle base, and pressing in place when the collision sound generated when the tile cover is seated is heard;
and 4, step 4: and after the bolt is oiled, the bolt is sequentially screwed down according to requirements.
The cylinder body skirt part and the tile cover are connected by adopting the arc undercut groove transition, the stress concentration is reduced, the tile cover is positioned by adopting a limiting step type independent structure, the tile cover has certain elasticity, the clamping force on the tile cover can be effectively reduced when the tile cover is positioned, the accurate positioning of the tile cover is realized by the self-centering characteristic, the deformation of a semicircular hole of the tile cover is reduced, and meanwhile, the positioning bosses on the left side and the right side are designed to be different heights and are matched with the limiting steps of the tile cover, so that the purpose of preventing the tile cover from being assembled reversely is realized.
Drawings
FIG. 1 is a schematic view of a prior art positioning ring for a cylinder head;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the cylinder structure;
fig. 4 is a schematic view of the structure of the tile cover.
In the figure, 1-cylinder body, 2-positioning ring, 3-tile cover, 4-arc undercut groove, 5-positioning boss and 6-limiting step.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 2-4, the cylinder block and tile cover positioning and mistake proofing structure of the invention comprises that the connection parts of the left and right sides of the skirt part of the cylinder block 1 and the tile cover 3 adopt arc-shaped undercut grooves 4, the inner sides of the arc-shaped undercut grooves are provided with positioning bosses 5, the inner sides of the positioning bosses 5 adopt arc structures, and the positioning bosses with different heights on the left and right sides are matched with limit steps 6 of the tile cover.
The wall thickness of the positioning boss 5 is 3-5mm.
The height difference of the positioning bosses 5 on the left side and the right side is 0.5-0.8mm.
The material of the positioning boss 5 is HT275.
The radian of the arc structure at the inner side of the positioning boss 5 is 0.3-0.6mm.
The clamping force of the tile cover 2 is 5-25N.
The height of left side location boss 5 is 3mm, and the height of right side boss 5 is 3.5mm.
The tile cover limiting step 6 is a 20-degree chamfer, and the tile cover base is a 15-degree chamfer.
The arc diameter of the arc-shaped undercut groove 4 is 8mm, and the straight line parts at the two ends of the arc-shaped undercut groove are inclined at a small angle of 15 degrees.
A cylinder body tile cover positioning and mistake proofing structure assembling method comprises the following steps:
step 1: lubricating oil is coated on two sides of the tile cover;
step 2: placing the tile cover on a main bearing seat of the skirt part of the cylinder body;
and step 3: pressing the tile cover into a positioning boss of the spindle base, and pressing in place when the collision sound generated when the tile cover is seated is heard;
and 4, step 4: and after the bolt is oiled, the bolt is sequentially screwed down according to requirements.
The cylinder body skirt part and the tile cover are connected by adopting the arc-shaped undercut groove transition, the stress concentration is reduced, the tile cover is positioned by adopting a limiting step type independent structure, the tile cover has certain elasticity, the clamping force on the tile cover can be effectively reduced when the tile cover is positioned, the accurate positioning of the tile cover is realized by the centering characteristic of the tile cover, the deformation of a semicircular hole of the tile cover is reduced, and meanwhile, the positioning bosses on the left side and the right side are designed into different heights and are matched with the limiting steps of the tile cover, so that the mistake proofing purpose of reversely assembling the tile cover is realized.
It should be noted that the above embodiments are merely representative examples of the present invention. It is obvious that the invention is not limited to the above-described embodiments, but that many variations are possible. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention should be considered to be within the scope of the present invention.
Here, it should be noted that the description of the above technical solutions is exemplary, the present specification may be embodied in different forms, and should not be construed as being limited to the technical solutions set forth herein. Rather, these descriptions are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solution of the present invention is limited only by the scope of the claims.
The shapes, sizes, ratios, angles, and numbers disclosed to describe aspects of the specification and claims are examples only, and thus, the specification and claims are not limited to the details shown. In the following description, when a detailed description of related known functions or configurations is determined to unnecessarily obscure the focus of the present specification and claims, the detailed description will be omitted.
Where the terms "comprising", "having" and "including" are used in this specification, there may be another part or parts unless otherwise stated, and the terms used may generally be singular but may also refer to the plural.
It should be noted that although the terms "first," "second," "top," "bottom," "one side," "another side," "one end," "another end," and the like may be present and used in this specification to describe various components, these components and parts should not be limited by these terms. These terms are only used to distinguish one element or section from another element or section. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, with the top and bottom elements being interchangeable or switchable with one another, where appropriate, without departing from the scope of the present description; the components at one end and the other end may be of the same or different properties to each other.
In addition, in constituting the components, although there is no explicit description thereof, it is understood that a certain error region is necessarily included.
Those not described in detail in this specification are within the skill of the art.
Claims (10)
1. The utility model provides a cylinder body tile lid location and mistake proofing structure which characterized in that: the connecting portion of the left and right sides of the cylinder body skirt portion and the tile cover adopt circular-arc undercut grooves for transition, the inner sides of the circular-arc undercut grooves are provided with positioning bosses, the inner sides of the positioning bosses adopt circular-arc structures, and the positioning bosses which are different in height at the left and right sides are matched with limiting steps of the tile cover.
2. The cylinder block and tile cover positioning and mistake proofing structure of claim 1, wherein: the wall thickness of the positioning boss is 3-5mm.
3. The cylinder block and tile cover positioning and mistake proofing structure of claim 1, wherein: the height difference of the positioning bosses on the left side and the right side is 0.5-0.8mm.
4. The cylinder block and tile cover positioning and mistake proofing structure of claim 1, wherein: the material of the positioning boss is HT275.
5. The cylinder block and tile cover positioning and mistake proofing structure of claim 1, wherein: the radian of the arc structure at the inner side of the positioning boss is 0.3-0.6mm.
6. The cylinder block and tile cover positioning and mistake proofing structure of claim 1, wherein: the clamping force of the tile cover is 5-25N.
7. The cylinder block and tile cover positioning and mistake proofing structure of claim 1, wherein: the left side the height of location boss is 3mm, and the right side the height of boss is 3.5mm.
8. The cylinder block and tile cover positioning and mistake proofing structure of claim 1, wherein: the spacing step of tile lid adopts 20 chamfers, the tile lid base adopts 15 chamfers.
9. The cylinder block and tile cover positioning and mistake proofing structure of claim 1, wherein: the arc diameter of the arc-shaped undercut groove is 8mm, and the straight line parts at the two ends of the arc-shaped undercut groove are inclined at a small angle of 15 degrees.
10. The assembly method of the cylinder block and tile cover positioning and mistake proofing structure according to claim 1, characterized in that: the method comprises the following steps:
step 1: lubricating oil is coated on two sides of the tile cover;
and 2, step: placing the tile cover on a main bearing seat of the skirt part of the cylinder body;
and step 3: pressing the tile cover into the positioning boss of the spindle seat, and hearing collision sound when the tile is seated to show that the tile cover is pressed in place;
and 4, step 4: and after the bolt is oiled, the bolt is sequentially screwed down according to requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211058099.1A CN115419512A (en) | 2022-08-31 | 2022-08-31 | Cylinder body tile cover positioning and mistake-proofing structure and assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211058099.1A CN115419512A (en) | 2022-08-31 | 2022-08-31 | Cylinder body tile cover positioning and mistake-proofing structure and assembly method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115419512A true CN115419512A (en) | 2022-12-02 |
Family
ID=84201135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211058099.1A Pending CN115419512A (en) | 2022-08-31 | 2022-08-31 | Cylinder body tile cover positioning and mistake-proofing structure and assembly method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115419512A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7322750B1 (en) * | 2005-11-18 | 2008-01-29 | Ronnie Besselman | Locking engine bearing splay cap |
| CN103527342A (en) * | 2012-07-04 | 2014-01-22 | 安徽华菱汽车有限公司 | Automobile engine cylinder body mechanism and automobile engine with same |
-
2022
- 2022-08-31 CN CN202211058099.1A patent/CN115419512A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7322750B1 (en) * | 2005-11-18 | 2008-01-29 | Ronnie Besselman | Locking engine bearing splay cap |
| CN103527342A (en) * | 2012-07-04 | 2014-01-22 | 安徽华菱汽车有限公司 | Automobile engine cylinder body mechanism and automobile engine with same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8376618B2 (en) | Thrust washer and radial/axial bearing having such a thrust washer | |
| US8166939B2 (en) | Cam bearing surface of an engine cylinder head that includes an axially extending oil passage | |
| US8251590B2 (en) | Anti-rotation bearing assembly and bearing | |
| EP1201968B1 (en) | Cam mechanism with cross roller bearing | |
| US20230220879A1 (en) | Cage segment for a segmented cage | |
| CN102430773A (en) | Automatic core fixer for machining sleeve parts | |
| JP2000179535A (en) | Bearing metal positioning structure in split type connecting rod | |
| AU621569B2 (en) | Arrangement for fitting together elements | |
| CN202356655U (en) | Automatic centralizer for machining sleeve parts | |
| CN115419512A (en) | Cylinder body tile cover positioning and mistake-proofing structure and assembly method | |
| US20010033703A1 (en) | Bearings | |
| US11306779B2 (en) | Method for producing components of a tilting-pad bearing, and tilting-pad bearing | |
| CN210919550U (en) | Novel structure of oil-retaining bearing motor | |
| CN220668152U (en) | Stop copper bar for split type water lubrication bearing | |
| CN209157155U (en) | A kind of chamfering tool structure | |
| CN220718470U (en) | Vertical processing tool for oil distribution disc | |
| CN220659254U (en) | Stop copper bar blank processing tool | |
| CN217271481U (en) | Bearing cap positioning structure and engine | |
| CN220659999U (en) | Stop copper bar processing tool | |
| CN220739702U (en) | Flexible support sleeve and gear machining tool | |
| CN219212272U (en) | Cylinder body clamp for machining inner wall | |
| CN112431857B (en) | Linear bearing applicable to square tube | |
| US20010008705A1 (en) | Welding construction | |
| CN211681086U (en) | Machine tool long shaft workpiece processing supporting structure | |
| CN116586900A (en) | Machining method for diesel engine connecting rod positioning pin hole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |