CN113770665A - Bearing cover process of engine core part - Google Patents
Bearing cover process of engine core part Download PDFInfo
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- CN113770665A CN113770665A CN202111072336.5A CN202111072336A CN113770665A CN 113770665 A CN113770665 A CN 113770665A CN 202111072336 A CN202111072336 A CN 202111072336A CN 113770665 A CN113770665 A CN 113770665A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000008569 process Effects 0.000 title claims abstract description 24
- 238000005266 casting Methods 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000003801 milling Methods 0.000 claims description 17
- 238000005516 engineering process Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000008358 core component Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 238000007639 printing Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 3
- 239000004576 sand Substances 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 description 5
- 238000007528 sand casting Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 electricity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
Abstract
The invention provides a process for a bearing cover of a core part of an engine, and relates to the field of machining. The process comprises a casting process and a material removing processing process, wherein the casting process uses an end cover and a die main body, the end cover is matched with the die main body, the interior of the die main body is hollow, and the profile of the interior section of the die main body is consistent with that of a required blank. Compared with the traditional process of casting by adopting a sand mold, the integral casting process has the advantages that the surface quality of the blank is better, the clamping of material processing is more facilitated, the processing procedure can be reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a process for manufacturing a bearing cover of a core part of an engine.
Background
The bearing seat is a large-scale and super-large-scale bearing seat which can receive comprehensive load and has a special structure, and has the characteristics of compact structure, sensitive rotation, convenient device maintenance and the like. The bearing seat is usually in a two-half type, the two are mutually covered, and one half can be called as a bearing cover.
In the production of the bearing cap, a casting mode is generally adopted for molding, and then a machining mode is carried out, so that a final finished product is obtained.
The traditional casting method is mostly sand casting. Sand casting refers to a casting method for producing castings in sand molds, the casting mold is simple and convenient to manufacture, and can adapt to single-piece production, batch production and mass production of castings, and the method is a basic process in casting production for a long time. However, the bearing cover is cast singly, and when the bearing cover is produced in large batch, a plurality of bearing cover cavities are arranged in a sand mold. In sand casting, the quality of the casting surface is low, and in large-scale casting, slitting and deburring are also required.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a bearing cap process of a core part of an engine, and solves the problem of low efficiency in the existing production process.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the bearing cover comprises a bearing cover of a core part of an engine, wherein one end face of the appointed bearing cover is a top face, two sides of the top face are side faces, a bolt hole and a positioning pin hole are formed in the top face, a semicircular hole is formed in the bearing cover, a tile locking groove is formed in the position of the top face, a thrust face is arranged on the side face, and a thrust groove is formed in the thrust face.
Preferably, the process for manufacturing the bearing cover of the engine core part comprises a casting process and a material removing processing process, wherein the casting process uses an end cover and a die main body, the end cover is matched with the die main body, the interior of the die main body is hollow, the profile of the inner section of the die main body is consistent with that of a required blank, and the casting process comprises the following steps:
<1> fitting an end cap with a mold body and erecting the mold body with the end cap positioned therebelow, followed by casting a metal in a molten state into an inner cavity of the mold body;
<2>, after the metal is cooled and solidified, the end cover is dismounted, and demoulding treatment is carried out to obtain a strip-shaped piece;
the material removing processing technology comprises the following contents:
<1> the strip is divided according to the specified length to obtain a blank;
and <2>, mechanical processing is carried out in steps:
2.1 clamping the top surface of the blank and the opposite surface of the top surface, roughly milling the side surface, and then finely milling;
2.2 clamping the side surface, performing rough milling on the top surface, performing rough boring on the semi-circular hole in advance, then performing fine boring, and milling a thrust surface and a thrust groove;
2.3 printing a mark;
2.4 clamping the side surface, finely milling the top surface, and then drilling bolt holes and positioning pin holes on the top surface;
2.5, finely milling the top surface again, and carrying out reaming operation on the bolt hole to mill a tile locking groove;
2.6 removing burrs;
2.7, cleaning;
2.8 oiling, matching and boxing.
Preferably, the end cap and the die body are in transition or clearance fit.
Preferably, the inner wall of the mold body is smoothly arranged.
(III) advantageous effects
The invention provides a bearing cover process of a core part of an engine. The method has the following beneficial effects:
1. according to the invention, the whole casting mode is adopted for slitting, and compared with the traditional sand casting, the obtained blank has higher quality.
2. According to the invention, the end cover and the die main body are used for casting, and the end cover and the die main body are in interference fit after being heated, so that the end cover and the die main body are simpler to connect.
3. Compared with the prior art, the invention greatly improves the production efficiency.
Drawings
FIG. 1 is a schematic view of a mold used in the present invention;
FIG. 2 is a schematic view of a machined blank of the present invention;
FIG. 3 is a schematic view of the machined part of the present invention.
Wherein, 1, end cover; 2. a mold body; 3. a positioning pin hole; 4. bolt holes; 5. locking the tile groove; 6. a thrust surface; 7. a thrust groove; 8. a semicircular hole; 9. a side surface; 10. a top surface.
Detailed Description
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. 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.
The first embodiment is as follows:
as shown in fig. 3, an embodiment of the present invention provides a bearing cap for a core component of an engine, where an end surface of the bearing cap is designated as a top surface 10, two sides of the top surface 10 are designated as side surfaces 9, a bolt hole 4 and a positioning pin hole 3 are provided on the top surface 10, a semicircular hole 8 is provided on the bearing cap, a shoe locking groove 5 is provided at the top surface 10, a thrust surface 6 is provided on the side surface 9, and a thrust groove 7 is provided on the thrust surface 6.
Engine core spare part bearing cap technology, including casting process and the processing technology that goes the material, end cover 1 and mould main part 2 are used in the casting process, as shown in figure 1, end cover 1 and mould main part 2 adopt transition or clearance fit, mould main part 2 uses the metal material, after mould main part 2 casts, thermal expansion, realize with end cover 1's interference fit, should guarantee that mould main part 2's expansion rate is greater than end cover 1's expansion rate this moment, after the cooling, make things convenient for taking off of end cover 1 again, this structure can make the connection of end cover 1 and mould main part 2 simpler, the inside cavity of mould main part 2 sets up, the smooth setting of inner wall of mould main part 2, the quality of the surface of the casting piece is provided, and inside cross-section profile is unanimous with required blank profile, the casting process has following content:
<1>, fitting the end cap 1 and the mold body 2, and erecting the mold body 2 with the end cap 1 positioned therebelow, and then casting a metal in a molten state into the inner cavity of the mold body 2;
<2>, after the metal is cooled and solidified, the end cover is dismounted, and demoulding treatment is carried out to obtain a strip-shaped piece;
the material removing processing technology comprises the following contents:
<1>, dividing the strip according to the designated length to obtain a blank, as shown in fig. 2;
and <2>, mechanical processing is carried out in steps:
2.1 clamping the opposite surfaces of the top surface 10 and the top surface 10 of the blank, roughly milling the side surface 9, and then finely milling;
2.2 clamping the side surface 9, and performing rough milling on the top surface 10, pre-rough boring and finish boring on the semicircular hole 8 in sequence to mill a thrust surface 6 and a thrust groove 7;
2.3 printing a mark;
2.4 clamping the side surface 9, finely milling the top surface 10, and then drilling bolt holes 4 and positioning pin holes 3 on the top surface 10;
2.5, finely milling the top surface 10 again, and carrying out reaming operation on the bolt hole 4 to mill a tile locking groove 5;
2.6 removing burrs;
2.7, cleaning;
2.8 oiling, matching and boxing.
Example two:
the step <2> in the material removing processing technology and the existing technology are investigated:
the traditional process flow is as follows:
the daily yield of the traditional process is calculated according to the on-demand rate of 85 percent, three shifts of production are carried out, 1200 daily products need 842 thousands of investment, and 21 workers are used.
Parts are processed according to 50 elements, the processing cost of a client is 10 elements/element, the labor cost is 260 elements/person, and the manufacturing cost (cutter, wind, water, electricity and liquid): 2 elements/piece.
Yearley (1200 pieces/day 10 elements/piece-260 elements/21 people-2 elements/piece 1200 elements) 350 days 144.9 ten thousand.
The investment recovery period is 55 months.
The traditional process has the defects of large labor cost ratio, low processing efficiency, overlong investment recovery period and the like.
The process flow of the invention is as follows:
the invention adopts a full-automatic production line, the daily output is calculated according to the on-demand rate of 85 percent, three shifts are used for production, the daily output of 1600 pieces needs 1500 ten thousand investments, and 3 workers are used.
The parts are processed by 50 elements, and the customer processes 10 elements/element. Labor cost 260 yuan day/person, manufacturing cost (cutter, wind, water, electricity, liquid): 2-element/element is added in the container,
annual gross profit (1600 pieces/day 10 elements/piece-260 elements/3 people-1600 pieces/2 elements) 350 days 420.7 ten thousand, and an investment recovery period of 43 months.
The invention shortens the investment recovery period by 12 months compared with the traditional process.
Compared with the traditional process, the invention creates more gross benefits by depreciating equipment for ten years: (120-43)/12 × 420.7- (120-55)/12 × 144.9 ═ 1914.61 ten thousand.
Compared with the traditional process, the invention has the advantages of improving the efficiency by 30 percent, reducing the labor consumption by 18 people, shortening the investment recovery period by 1 year and increasing the profits of the whole line by 1914.61 ten years.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. Engine core spare part bearing cap, an terminal surface of appointed bearing cap is top surface (10), and the both sides of top surface (10) are side (9), its characterized in that: the bearing is characterized in that a bolt hole (4) and a positioning pin hole (3) are formed in the top surface (10), a semicircular hole (8) is formed in the bearing cover, a tile locking groove (5) is formed in the top surface (10), a thrust surface (6) is formed in the side surface (9), and a thrust groove (7) is formed in the thrust surface (6).
2. The engine core part bearing cap process comprises a casting process and a material removing processing process, and is characterized in that: the casting process uses an end cover (1) and a die main body (2), the end cover (1) is matched with the die main body (2), the interior of the die main body (2) is hollow, the profile of the inner section of the die main body is consistent with the profile of a required blank, and the casting process comprises the following steps:
<1>, fitting an end cap (1) and a mold main body (2) and erecting the mold main body (2) with the end cap (1) positioned therebelow, and then casting a metal in a molten state into an inner cavity of the mold main body (2);
<2>, after the metal is cooled and solidified, the end cover is dismounted, and demoulding treatment is carried out to obtain a strip-shaped piece;
the material removing processing technology comprises the following contents:
<1> the strip is divided according to the specified length to obtain a blank;
and <2>, mechanical processing is carried out in steps:
2.1 clamping the opposite surfaces of the top surface (10) and the top surface (10) of the blank, roughly milling the side surface (9), and then finely milling;
2.2 clamping the side surface (9), roughly milling the top surface (10), roughly boring the semicircular hole (8) in advance, finely boring, and milling a thrust surface (6) and a thrust groove (7);
2.3 printing a mark;
2.4 clamping the side surface (9), finely milling the top surface (10), and then drilling bolt holes (4) and positioning pin holes (3) on the top surface (10);
2.5, finely milling the top surface (10) again, and carrying out reaming operation on the bolt holes (4) to mill a tile locking groove (5);
2.6 removing burrs;
2.7, cleaning;
2.8 oiling, matching and boxing.
3. The engine core component bearing cap process of claim 2, wherein: the end cover (1) and the die main body (2) adopt transition or clearance fit.
4. The engine core component bearing cap process of claim 2, wherein: the inner wall of the die main body (2) is smoothly arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111072336.5A CN113770665A (en) | 2021-09-14 | 2021-09-14 | Bearing cover process of engine core part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111072336.5A CN113770665A (en) | 2021-09-14 | 2021-09-14 | Bearing cover process of engine core part |
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| Publication Number | Publication Date |
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| CN113770665A true CN113770665A (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111072336.5A Pending CN113770665A (en) | 2021-09-14 | 2021-09-14 | Bearing cover process of engine core part |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321187A (en) * | 2022-01-22 | 2022-04-12 | 昆明云内动力股份有限公司 | Main bearing seat structure of diesel engine cylinder body stress-relief arc groove and machining method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201165883Y (en) * | 2007-12-27 | 2008-12-17 | 奇瑞汽车股份有限公司 | First bearing cap of engine cam axle |
| CN101890478A (en) * | 2010-07-16 | 2010-11-24 | 吴江市液铸液压件铸造有限公司 | Production process for casting spherical end cover |
| CN101905307A (en) * | 2010-07-16 | 2010-12-08 | 吴江市液铸液压件铸造有限公司 | Production process for valve body end cap |
| CN203627547U (en) * | 2013-10-31 | 2014-06-04 | 长城汽车股份有限公司 | Engine main bearing cover and engine body |
| CN105269276A (en) * | 2015-12-07 | 2016-01-27 | 衡阳风顺车桥有限公司 | Production technology of reducer bearing covers |
| CN107699777A (en) * | 2017-09-30 | 2018-02-16 | 和县华顺铸造有限公司 | A kind of bearing cap casting technique |
| CN107716857A (en) * | 2017-10-13 | 2018-02-23 | 刘学洋 | One type two pieces sand casting process |
| CN208178377U (en) * | 2018-04-09 | 2018-12-04 | 浙江省机电设计研究院有限公司 | The process unit of Iron Mould Coated Sand vertical-parting cast bearing lid casting |
| CN209195970U (en) * | 2018-12-13 | 2019-08-02 | 宁波海纳机械有限公司 | Thrust main beating cap |
-
2021
- 2021-09-14 CN CN202111072336.5A patent/CN113770665A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201165883Y (en) * | 2007-12-27 | 2008-12-17 | 奇瑞汽车股份有限公司 | First bearing cap of engine cam axle |
| CN101890478A (en) * | 2010-07-16 | 2010-11-24 | 吴江市液铸液压件铸造有限公司 | Production process for casting spherical end cover |
| CN101905307A (en) * | 2010-07-16 | 2010-12-08 | 吴江市液铸液压件铸造有限公司 | Production process for valve body end cap |
| CN203627547U (en) * | 2013-10-31 | 2014-06-04 | 长城汽车股份有限公司 | Engine main bearing cover and engine body |
| CN105269276A (en) * | 2015-12-07 | 2016-01-27 | 衡阳风顺车桥有限公司 | Production technology of reducer bearing covers |
| CN107699777A (en) * | 2017-09-30 | 2018-02-16 | 和县华顺铸造有限公司 | A kind of bearing cap casting technique |
| CN107716857A (en) * | 2017-10-13 | 2018-02-23 | 刘学洋 | One type two pieces sand casting process |
| CN208178377U (en) * | 2018-04-09 | 2018-12-04 | 浙江省机电设计研究院有限公司 | The process unit of Iron Mould Coated Sand vertical-parting cast bearing lid casting |
| CN209195970U (en) * | 2018-12-13 | 2019-08-02 | 宁波海纳机械有限公司 | Thrust main beating cap |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321187A (en) * | 2022-01-22 | 2022-04-12 | 昆明云内动力股份有限公司 | Main bearing seat structure of diesel engine cylinder body stress-relief arc groove and machining method thereof |
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