CN112963262A - Bearing cap positioning structure and machining method - Google Patents
Bearing cap positioning structure and machining method Download PDFInfo
- Publication number
- CN112963262A CN112963262A CN202110313065.1A CN202110313065A CN112963262A CN 112963262 A CN112963262 A CN 112963262A CN 202110313065 A CN202110313065 A CN 202110313065A CN 112963262 A CN112963262 A CN 112963262A
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- CN
- China
- Prior art keywords
- pin hole
- positioning pin
- positioning
- bearing cover
- bearing cap
- 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
- 238000003754 machining Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 5
- 238000005553 drilling Methods 0.000 claims description 12
- 238000003672 processing method Methods 0.000 abstract description 9
- 230000004075 alteration Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
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- 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
- F02F7/0082—Mounting of engine casings
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- 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
- F02F7/0021—Construction
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- 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
- F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
- F02F7/0073—Adaptations for fitting the engine, e.g. front-plates or bell-housings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Drilling And Boring (AREA)
Abstract
The invention provides a bearing cap positioning structure and a processing method, comprising the following steps: the cylinder body is provided with a first positioning pin hole, the bearing cover is provided with a second positioning pin hole, the first positioning pin hole and the second positioning pin hole are positioned on a joint surface of the cylinder body and the bearing cover, and cylindrical pins are further arranged in the first positioning pin hole and the second positioning pin hole; compared with the prior art, the bearing cap positioning structure and the processing method provided by the invention can realize accurate positioning of the bearing cap, improve the repeated assembly precision of the bearing cap and do not need to use special materials.
Description
Technical Field
The invention belongs to the technical field of internal combustion engines, and particularly relates to a bearing cap positioning structure and a machining method.
Background
In prior solutions, the bearing caps are positioned by pins or pin sleeves, by rabbets or serrations. The positioning precision is poor, and the repeated assembly precision is poor. The bearing cap is positioned in an expansion-breaking manner. The positioning precision is high, and the repeated assembly precision is high. However, special materials are used, so that the bearing cap is subjected to fracture along the direction of the prefabricated crack groove under the condition that the bearing cap is hardly subjected to plastic deformation.
Chinese invention patent CN 106795908A;
chinese invention patent CN 101435378A;
chinese invention patent CN 109058281A.
Disclosure of Invention
The invention aims to provide a bearing cover positioning structure and a processing method, and aims to solve the problem that positioning accuracy and repeated assembly accuracy are poor due to deviation caused by respective processing of positioning pin holes in the prior art.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
the invention provides a bearing cap positioning structure and a processing method, comprising the following steps: the cylinder body is provided with a first positioning pin hole, the bearing cover is provided with a second positioning pin hole, the first positioning pin hole and the second positioning pin hole are located on a joint surface of the cylinder body and the bearing cover, and cylindrical pins are further arranged in the first positioning pin hole and the second positioning pin hole.
Preferably, the first positioning pin hole and the second positioning pin hole are both hinge holes.
Preferably, the diameters of the first positioning pin hole and the second positioning pin hole are 8mm, the length of the first positioning pin hole is 8mm, and the length of the second positioning pin hole is 7 mm.
The invention also provides a processing method of the bearing cover positioning structure, which comprises the following steps:
and 4, machining a reaming hole with the diameter of phi 8mm by using a reamer, taking the reaming hole on the cylinder block as a first positioning pin hole with the depth of 8mm, taking the reaming hole on the bearing cover as a second positioning pin hole with the depth of 8mm, and arranging a cylindrical pin in the first positioning pin hole and the second positioning pin hole to lock the cylinder block and the bearing cover, thus finishing the machining.
The invention has the advantages that:
compared with the prior art, the bearing cap positioning structure and the processing method provided by the invention can realize accurate positioning of the bearing cap, improve the repeated assembly precision of the bearing cap and do not need to use special materials.
Drawings
FIG. 1 is a schematic structural view of a bearing cap positioning structure according to the present invention;
FIG. 2 is an enlarged view of a portion of the bearing cap locating structure according to the present invention;
fig. 3a, 3b and 3c are process diagrams of the bearing cap positioning structure processing method according to the invention.
In the figure, 1 is a cylinder block, 2 is a bearing cap, 3 is a first positioning pin hole, 4 is a second positioning pin hole, and 5 is a cylindrical pin.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a bearing cap positioning structure and a processing method, as shown in figure 1, the bearing cap positioning structure comprises: the cylinder block comprises a cylinder block 1 and a bearing cover 2, wherein a first positioning pin hole 3 is formed in the cylinder block 1, a second positioning pin hole 4 is formed in the bearing cover 2, the first positioning pin hole 3 and the second positioning pin hole 4 are located on a joint surface of the cylinder block 1 and the bearing cover 2, cylindrical pins 5 used for positioning and locking the cylinder block 1 and the bearing cover 2 are further arranged in the first positioning pin hole 3 and the second positioning pin hole 4, and through the structural arrangement, the problems that in the prior art, the bearing cover 2 is poor in precision due to positioning through pins or pin sleeves and fracture of a section due to positioning through an expansion fracture mode are solved.
In one embodiment, the first positioning pin hole 3 and the second positioning pin hole 4 are both twisted holes, and the matching of the cylindrical pin 5 can bring better locking and positioning effects.
In some embodiments, the diameter of the first positioning pin hole 3 and the diameter of the second positioning pin hole 4 are 8mm, the length of the first positioning pin hole 3 is 8mm, and the length of the second positioning pin hole 4 is 7mm, so that the processing and the assembly are convenient.
The invention also provides a processing method of the bearing cover positioning structure, which comprises the following steps:
and 4, as shown in fig. 3c, machining a reaming hole with the diameter of phi 8mm by using a reamer, wherein the reaming hole depth on the cylinder block 1 is 8mm and is used as a first positioning pin hole 3, the reaming hole depth on the bearing cap 2 is 8mm and is used as a second positioning pin hole 4, and arranging a cylindrical pin 5 (please refer to fig. 1) in the first positioning pin hole 3 and the second positioning pin hole 4 to lock the cylinder block 1 and the bearing cap 2, and finishing.
Reference in the specification to "some embodiments," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in various places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with a feature, structure, or characteristic of one or more other embodiments without limitation, as long as the combination is not logical or operational. Additionally, the various elements of the drawings of the present application are merely schematic illustrations and are not drawn to scale.
Having thus described several aspects of at least one embodiment of this invention, it is to be appreciated various alterations, modifications, and improvements will readily occur to those skilled in the art. Such alterations, modifications, and improvements are intended to be within the spirit and scope of the invention.
Claims (4)
1. A bearing cap positioning structure, comprising: the cylinder body is provided with a first positioning pin hole, the bearing cover is provided with a second positioning pin hole, the first positioning pin hole and the second positioning pin hole are located on a joint surface of the cylinder body and the bearing cover, and cylindrical pins are further arranged in the first positioning pin hole and the second positioning pin hole.
2. The bearing cap positioning structure according to claim 1, wherein: the first positioning pin hole and the second positioning pin hole are both hinge holes.
3. The bearing cap positioning structure according to claim 1 or 2, wherein: the diameter of the first positioning pin hole and the diameter of the second positioning pin hole are 8mm, the length of the first positioning pin hole is 8mm, and the length of the second positioning pin hole is 7 mm.
4. A bearing cap positioning structure machining method is characterized by comprising the following steps:
step 1, firstly, placing a bearing cover on an air cylinder body, and fastening the bearing cover by using a bolt;
step 2, drilling a hole with the diameter of phi 8.5mm on the bearing cover, wherein the distance between the head of the drilled hole and the joint surface of the cylinder body and the bearing cover is 7 mm;
step 3, adopting a drill bit with the diameter of phi 7.8mm to continuously drill, and continuously drilling into the cylinder body after drilling through the bearing cover, wherein the drilling depth on the cylinder body is 11 mm;
and 4, machining a reaming hole with the diameter of phi 8mm by using a reamer, taking the reaming hole on the cylinder block as a first positioning pin hole with the depth of 8mm, taking the reaming hole on the bearing cover as a second positioning pin hole with the depth of 8mm, and arranging a cylindrical pin in the first positioning pin hole and the second positioning pin hole to lock the cylinder block and the bearing cover, thus finishing the machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110313065.1A CN112963262A (en) | 2021-03-24 | 2021-03-24 | Bearing cap positioning structure and machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110313065.1A CN112963262A (en) | 2021-03-24 | 2021-03-24 | Bearing cap positioning structure and machining method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112963262A true CN112963262A (en) | 2021-06-15 |
Family
ID=76278225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110313065.1A Pending CN112963262A (en) | 2021-03-24 | 2021-03-24 | Bearing cap positioning structure and machining method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112963262A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB763601A (en) * | 1953-08-06 | 1956-12-12 | John Freeman Cuss | Fasteners for panels and the like |
| CN204784220U (en) * | 2015-05-07 | 2015-11-18 | 潍柴动力股份有限公司 | Thrust bearing cap's location structure , engine |
| CN208396824U (en) * | 2018-06-08 | 2019-01-18 | 东风汽车集团有限公司 | A kind of middle assembly location structure of camshaft of car engine lid |
| CN209145728U (en) * | 2018-10-09 | 2019-07-23 | 广西玉柴机器股份有限公司 | The location structure of main beating cap |
| CN214741718U (en) * | 2021-03-24 | 2021-11-16 | 广西玉柴机器股份有限公司 | Bearing cap positioning structure |
-
2021
- 2021-03-24 CN CN202110313065.1A patent/CN112963262A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB763601A (en) * | 1953-08-06 | 1956-12-12 | John Freeman Cuss | Fasteners for panels and the like |
| CN204784220U (en) * | 2015-05-07 | 2015-11-18 | 潍柴动力股份有限公司 | Thrust bearing cap's location structure , engine |
| CN208396824U (en) * | 2018-06-08 | 2019-01-18 | 东风汽车集团有限公司 | A kind of middle assembly location structure of camshaft of car engine lid |
| CN209145728U (en) * | 2018-10-09 | 2019-07-23 | 广西玉柴机器股份有限公司 | The location structure of main beating cap |
| CN214741718U (en) * | 2021-03-24 | 2021-11-16 | 广西玉柴机器股份有限公司 | Bearing cap positioning structure |
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