CN110344962B - High-precision mounting hole structure - Google Patents
High-precision mounting hole structure Download PDFInfo
- Publication number
- CN110344962B CN110344962B CN201910578408.XA CN201910578408A CN110344962B CN 110344962 B CN110344962 B CN 110344962B CN 201910578408 A CN201910578408 A CN 201910578408A CN 110344962 B CN110344962 B CN 110344962B
- Authority
- CN
- China
- Prior art keywords
- chamfer
- mounting hole
- hole structure
- sealing plane
- oil pump
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 49
- 238000009434 installation Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 31
- 239000010705 motor oil Substances 0.000 description 5
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
-
- 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
-
- 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
- F02F1/20—Other cylinders characterised by constructional features providing for lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
- F01M2001/0284—Pressure lubrication using lubricating pumps mounting of the pump
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention relates to the technical field of engine preparation and manufacturing, in particular to a high-precision mounting hole structure, which comprises a mounting surface matched with an outer ring surface of a cylindrical part to form an inner ring surface structure and a sealing plane positioned at one side of the inner end of the mounting surface, wherein the sealing plane is used for being matched with the front end of the cylindrical part in a sealing way, a first chamfer is arranged at the inner side edge of the mounting surface, a second chamfer is arranged at the edge of the sealing plane, the first chamfer is connected with the second chamfer, and a shoulder structure is formed at the joint of the first chamfer and the second chamfer. The radial surface and the hole bottom surface are formed by separate processing, and meanwhile, the precision requirements of the radial surface and the hole bottom surface are met, and the influence of processing residual connecting marks of the two surfaces on assembly is avoided.
Description
Technical Field
The invention relates to the technical field of engine assembly and manufacturing, in particular to a high-precision mounting hole structure.
Background
In the field of engine assembly and manufacture, other precise parts are required to be assembled on an engine cylinder body, a cylinder cover and the like or parts which are required to be matched and sealed with mounting parts, such as an engine cylinder body engine oil pump mounting hole, an idler gear shaft mounting hole and the like, the radial surface is an engine oil pump mounting hole, high-precision matching is required to be carried out with an engine oil pump, the bottom surface of the hole is a sealing surface, high-pressure oil is required to be sealed, so that the hollow bottom surface is required to be sealed with the engine oil pump, and the radial surface and the bottom surface of the hole have high-precision processing requirements. It is difficult to ensure the precision of the hole bottom surface and the hole radial surface simultaneously during processing, because the two surfaces are formed by separate processing, and the requirements of verticality, roughness and the like are difficult to ensure. As in chinese patent CN107780992a, an oil return structure for an engine is disclosed, in which an oil pump mounting groove is integrated on the cylinder block, the oil pump is mounted in the oil pump mounting groove, and a bottom surface sealing surface and a mounting surface of the oil pump mounting groove are in direct contact, so that it is difficult to ensure accuracy of a hole bottom surface and a hole radial surface at the same time during processing, and it is difficult to ensure requirements of verticality, roughness, and the like.
In the prior art, in the oil pump mounting hole structure, because the oil pump sealing surface needs to form high-pressure oil with sealing tape sealing up to 0.8MPa with the oil pump, the roughness and flatness of the oil pump sealing surface and the relative tolerance, such as verticality, of the oil pump mounting surface all need to have higher requirements, basically, the two surfaces are obtained by different working procedures respectively, and at present, the processing equipment for simultaneously guaranteeing the two surfaces is also provided. Conventionally, as shown in FIG. 1, an R1 fillet is made at the location where the two faces meet. Or as shown in fig. 2, an oblique angle with a height H and an angle θ is made to connect the two surfaces, but whichever structure is adopted can form an interface trace with an indefinite height on the two surfaces, if the seal belt is not tight, if the radial surface is difficult to assemble or is blocked, the height of the interface trace needs to be controlled.
Disclosure of Invention
The invention provides a high-precision mounting hole structure, wherein a radial surface and a hole bottom surface are separated at intervals, so that the precision requirement of the radial surface and the hole bottom surface can be met during processing, and the influence of processing residual connecting marks of the two surfaces on assembly can be avoided.
The technical scheme of the invention is as follows: the utility model provides a high accuracy mounting hole structure, sets up on the cylinder block for install cylindrical part, include with the cooperation of cylindrical part outer ring face is the installation face of interior annular face structure, is located the sealing plane of the inner one side of installation face, sealing plane is used for sealing cooperation cylindrical part's front end, the inboard edge of installation face is provided with first chamfer, sealing plane edge is provided with the second chamfer, first chamfer with the second chamfer is connected, first chamfer with second chamfer junction is the shoulder structure.
According to the invention, a shoulder is used for separating the mounting surface from the sealing plane, namely the first chamfer and the second chamfer are stepped to form a shoulder, the mounting surface and the sealing plane are arranged separately, and the first chamfer and the second chamfer are respectively processed on the respective processing bottom surface, so that the range of the respective processing connecting trace and the depth of the connecting trace can be respectively controlled;
the mounting surface and the sealing plane are respectively processed, so that relative precision is guaranteed, and meanwhile, the function of the engine oil pump is not affected by the connecting trace. The joint marks after the installation surface and the sealing plane are respectively processed are respectively controlled, the condition that the joint marks are mutually influenced can not occur, and the processing of the installation surface and the sealing plane are not mutually influenced, so that the accuracy of the installation position of the outer ring surface of the cylindrical part can be ensured, the processing precision of the sealing plane can be ensured, and the problem that the bottom surface cannot be sealed or the radial surface cannot be assembled is avoided.
Preferably, the high-precision mounting hole structure further comprises a third chamfer located between the first chamfer and the second chamfer, wherein the third chamfer is more than one, and one or more shoulders can be formed, so that the distance between the mounting surface and the sealing plane is further, and the height of the joint mark of the joint surface of the mounting surface and the sealing plane is better controlled.
Preferably, the first chamfer is one of a round angle and an oblique angle, the second chamfer is one of a round angle and an oblique angle, and the structure convenient to process is adopted, so that the processing is simple and the cost is low.
Preferably, the front end of the cylindrical member is provided with an lead-in angle. The leading-in angle of the front end of the cylindrical part can avoid the shoulder formed by the first chamfer and the second chamfer structure, so that interference is avoided, the phenomenon that the cylindrical part props against the high-precision mounting hole structure is avoided, and meanwhile, the mounting is convenient.
Preferably, the cylindrical component is an oil pump, after the oil pump is installed in the high-precision mounting hole structure, the position degree of the oil pump is accurate, the oil pump gear is prevented from generating larger noise due to overlarge gear clearance between the oil pump gear and the gear meshed with the oil pump gear, meanwhile, the radial precision of the oil pump mounting hole, such as roughness, perpendicularity, cylindricity, position degree and the like, has higher requirements, and is difficult to ensure the assembly requirement of the oil pump, so that the oil pump is very suitable for the high-precision mounting hole structure, and the mounting effect is better.
Preferably, the high-precision mounting hole structure is integrally formed on the cylinder body, the structure is simple, the structure is directly processed on the cylinder body, the mounting step is saved, the structural strength is good, and the structure is compact.
The beneficial effects of the invention are as follows:
1. the invention separates the mounting surface from the sealing plane by using the shoulder, can respectively control the range of the respective processing connecting trace and the depth of the connecting trace, can ensure the accuracy of the mounting position of the outer ring surface of the cylindrical part, can also ensure the processing precision of the sealing plane, and can also ensure the relative precision of the two surfaces, thereby avoiding the problems that the bottom surface cannot be sealed or the radial surface cannot be assembled.
2. According to the invention, the mounting surface and the sealing plane are separated by using the shoulder and are not directly connected, and after the mounting surface and the sealing plane are separated and processed, the height control of the joint mark of the mounting surface and the sealing plane is not needed to be considered, so that the processing efficiency is improved.
3. The structure is simple, the first chamfer and the second chamfer are round corners or bevel structures, machining shoulders can be formed, machining is simple, and cost is low.
Drawings
Fig. 1 and 2 are schematic structural views of a junction between a radial surface and a hole bottom surface of a mounting hole of an oil pump in the related art.
Fig. 3 is a schematic view of the junction of the mounting surface and the sealing plane of a high precision mounting hole structure according to the present invention.
Fig. 4 is a schematic structural view of the high-precision mounting hole structure of the present invention when the oil pump is mounted.
Fig. 5 is a schematic structural view of embodiment 3 of the present invention.
Fig. 6 is a schematic structural view of embodiment 4 of the present invention.
In the figure: 1-cylinder block, 2-oil pump, 3-installation face, 301-first chamfer, 4-sealing plane, 401-second chamfer, 5-third chamfer.
Detailed Description
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
Example 1:
the utility model provides a high accuracy mounting hole structure, sets up on cylinder block 1 for install cylindrical part, include with the cooperation of cylindrical part outer ring face is the installation face 3 of interior annular face structure, be located the sealing plane 4 of the interior end one side of installation face 3, sealing plane 4 is used for sealing cooperation cylindrical part's front end, the inboard edge of installation face 3 is provided with first chamfer 301, sealing plane 4 edge is provided with second chamfer 401, first chamfer 301 with second chamfer 401 connects, first chamfer 301 with second chamfer 401 junction is the shoulder structure.
In the processing of the high-precision mounting hole structure, the first chamfer 301 and the second chamfer 401 are respectively processed on the processing bottom surfaces of the mounting surface 3 and the sealing plane 4, and then the range of the respective connecting marks and the depth of the connecting marks are respectively controlled on the processing bottom surfaces of the mounting surface 3 and the sealing plane 4, so that the functions of the cylindrical component are not affected by the connecting marks while the relative precision is ensured by the respective processing of the sealing plane 4 and the mounting surface 3.
Example 2:
as shown in fig. 3 and 4, a high-precision mounting hole structure is integrally formed on a cylinder body 1, a cylindrical component is an oil pump 2, the high-precision mounting hole structure is used for mounting the oil pump 2, the high-precision mounting hole structure comprises a mounting surface 3 which is matched with an outer ring surface of the oil pump 2 to form an inner ring surface structure, a sealing plane 4 is positioned at one side of the inner end of the mounting surface 3, the sealing plane 4 is used for being in sealing fit with the front end of the oil pump 2, a first chamfer 301 is arranged at the inner side edge of the mounting surface 3, a second chamfer 401 is arranged at the edge of the sealing plane 4, the first chamfer 301 is connected with the second chamfer 401, the joint of the first chamfer 301 and the second chamfer 401 is in a shoulder structure, namely the first chamfer 301 and the second chamfer 401 are in steps, and a shoulder is formed, and the mounting surface 3 and the sealing plane 4 are prevented from being directly connected, namely the inner side end of the mounting surface 3 and the sealing plane 4 are separated by a certain distance.
The first chamfer 301 and the second chamfer 401 are rounded;
the front end of the oil pump 2 is provided with an introduction angle. The front end of the oil pump 2 is provided with an introduction angle, and the introduction angle can avoid a shoulder formed by the structures of the first chamfer 301 and the second chamfer 401.
As shown in fig. 4, in the processing of the high-precision mounting hole structure according to the present invention, two fillets are processed on the processing bottom surfaces of the mounting surface 3 and the sealing plane 4, respectively, and then the ranges of the respective junctions and the depths of the junctions are controlled respectively on the processing bottom surfaces of the mounting surface 3 and the sealing plane 4, so that the functions of the oil pump 2 are not affected by the junctions while ensuring the relative precision of the processing of the sealing plane 4 and the mounting surface 3.
Example 3:
as shown in fig. 5, this embodiment is different from embodiment 2 described above in that the cylindrical member is an idler shaft, and the first chamfer 301 and the second chamfer 401 are both beveled angles, which are 45 ° from the horizontal.
Example 4:
as shown in fig. 6, this embodiment is different from embodiment 2 in that a third chamfer 5 is further provided between the first chamfer 301 and the second chamfer 401, the number of shoulders is two, and the first chamfer 301, the second chamfer 401 and the third chamfer 5 are rounded.
Claims (6)
1. The utility model provides a high accuracy mounting hole structure, sets up on cylinder block (1) for install cylindrical part, include with cylindrical part outer ring face cooperation is interior annular face structure's installation face (3), be located sealing plane (4) of the inner one side of installation face (3), sealing plane (4) are used for sealing fit cylindrical part's front end, its characterized in that: the mounting surface (3) inboard edge is provided with first chamfer (301), sealing plane (4) edge is provided with second chamfer (401), first chamfer (301) with second chamfer (401) are connected, first chamfer (301) with second chamfer (401) junction is the shoulder structure.
2. A high precision mounting hole structure according to claim 1, wherein: and a third chamfer (5) positioned between the first chamfer (301) and the second chamfer (401), wherein the number of the third chamfer (5) is more than one.
3. A high precision mounting hole structure according to claim 1, wherein: the first chamfer (301) is one of a rounded corner or a beveled corner, and the second chamfer (401) is one of a rounded corner or a beveled corner.
4. A high precision mounting hole structure according to claim 1, wherein: the front end of the cylindrical member is provided with an lead-in angle.
5. A high precision mounting hole structure according to claim 1, wherein: the cylindrical part is an oil pump (2).
6. A high precision mounting hole structure according to claim 1, wherein: the high-precision mounting hole structure is integrally formed and arranged on the cylinder body (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910578408.XA CN110344962B (en) | 2019-06-28 | 2019-06-28 | High-precision mounting hole structure |
| PCT/CN2019/106531 WO2020258538A1 (en) | 2019-06-28 | 2019-09-18 | High-precision mounting hole structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910578408.XA CN110344962B (en) | 2019-06-28 | 2019-06-28 | High-precision mounting hole structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110344962A CN110344962A (en) | 2019-10-18 |
| CN110344962B true CN110344962B (en) | 2024-02-20 |
Family
ID=68177150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910578408.XA Active CN110344962B (en) | 2019-06-28 | 2019-06-28 | High-precision mounting hole structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110344962B (en) |
| WO (1) | WO2020258538A1 (en) |
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2019
- 2019-06-28 CN CN201910578408.XA patent/CN110344962B/en active Active
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| JP2000326145A (en) * | 1999-05-21 | 2000-11-28 | Nissan Motor Co Ltd | Working method for valve seat in cylinder head |
| CN101950697A (en) * | 2010-10-14 | 2011-01-19 | 句容市华通电器有限公司 | Fixed contact |
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| CN203230348U (en) * | 2013-03-06 | 2013-10-09 | 中国石油天然气股份有限公司 | Double-shoulder sealing surface structure |
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| CN109209672A (en) * | 2018-09-27 | 2019-01-15 | 潍柴动力股份有限公司 | Special-shaped valve retainer bottom outlet and cylinder head |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020258538A1 (en) | 2020-12-30 |
| CN110344962A (en) | 2019-10-18 |
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