CN108526821B - Method for processing engine oil pump body of internal combustion engine - Google Patents
Method for processing engine oil pump body of internal combustion engine Download PDFInfo
- Publication number
- CN108526821B CN108526821B CN201810290694.5A CN201810290694A CN108526821B CN 108526821 B CN108526821 B CN 108526821B CN 201810290694 A CN201810290694 A CN 201810290694A CN 108526821 B CN108526821 B CN 108526821B
- Authority
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- China
- Prior art keywords
- pump body
- oil pump
- engine oil
- die
- engine
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Links
- 239000010705 motor oil Substances 0.000 title claims abstract description 66
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims description 10
- 239000003921 oil Substances 0.000 claims abstract description 135
- 238000004080 punching Methods 0.000 claims abstract description 20
- 238000003754 machining Methods 0.000 claims abstract description 7
- 238000003672 processing method Methods 0.000 claims abstract description 6
- 238000005266 casting Methods 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 238000005238 degreasing Methods 0.000 claims abstract description 4
- 238000000861 blow drying Methods 0.000 claims abstract description 3
- 238000005553 drilling Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fuel-Injection Apparatus (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a processing method of an engine oil pump body of an internal combustion engine, which comprises the following steps: casting a blank of an engine oil pump body and a blank of a valve plate; carrying out finish machining on the blank of the cast engine oil pump body; finish machining is carried out on the cast valve plate, and the outer surface and the circumferential surface are polished to be smooth; processing a connecting hole on the engine oil pump body; processing an oil inlet hole and an oil outlet hole, and punching on a lug for processing the oil inlet hole and the oil outlet hole on the outer circumference of the engine oil pump body through a drill bit; punching holes from the opening of the oil pump body to the circular inner wall of the opening, and respectively punching two inclined holes so that the two inclined holes respectively communicate the oil inlet hole and the oil outlet hole with the opening of the oil pump body; and cleaning, degreasing and blow-drying the machined engine oil pump body and the valve plate. The invention is convenient for processing, reduces the processing difficulty and saves the cost.
Description
Technical Field
The invention relates to an oil pump of an internal combustion engine, in particular to a method for processing a pump body of the oil pump of the internal combustion engine.
Background
The oil pump is widely applied to internal combustion engines, particularly diesel engines, most of the existing oil pumps are composed of an oil pump body, an oil pump cover, an inner rotor assembly and an outer rotor, the oil pump body and the oil pump cover are of two disc-shaped structures, the oil pump body and the oil pump cover are connected through bonding between the two disc-shaped structures and are provided with gaskets, and finally the oil pump is fixed through positioning pins and locking bolts, but the following defects exist in the mode: 1. oil leakage phenomenon exists, and engine oil can leak out of a gap between an engine oil pump body and an engine oil pump cover, so that environmental pollution is caused; 2 because pass through locating pin and locking bolted connection between the oil pump body and the oil pump lid, the location pinhole always exists certain error in the processing, can lead to the oil pump body and the oil pump lid between fixed back like this, the locating hole on the oil pump body at pump shaft both ends and the oil pump lid can not guarantee concentricity, can lead to the pump shaft to exist certain eccentricity like this, causes the damage of pump shaft easily. In the prior art, the oil pump cover is made into a disc-shaped structure and is clamped on the opening of the oil pump body, but the mode is inconvenient to process, and particularly, the oil guiding holes between the oil outlet and the oil inlet and the oil pump body are inconvenient to process.
Disclosure of Invention
The invention aims to overcome the problems and provide a method for processing an engine oil pump body of an internal combustion engine.
In order to achieve the above purpose, the method adopted by the invention is as follows: a processing method of an engine oil pump body of an internal combustion engine comprises the following steps:
(1) Casting a blank of the engine oil pump body, wherein a groove is arranged in the engine oil pump body, a circular opening structure is arranged at the end face of the engine oil pump body, and a bump for processing a connecting hole and an oil inlet and an oil outlet is arranged on the outer circumference of the engine oil pump body;
(2) Finish machining is carried out on the blank of the cast engine oil pump body, including turning round, deburring, and polishing and flattening the opening at the end face;
(3) Processing a connecting hole on the engine oil pump body, punching a through hole on a lug for processing the connecting hole on the outer circumference of the engine oil pump body through a drill bit, and penetrating two sides of the lug;
(4) The oil inlet and the oil outlet are processed, holes are punched on the convex blocks for processing the oil inlet and the oil outlet on the outer circumference of the engine oil pump body through the drill bit, and the oil inlet and the oil outlet are non-through holes;
(5) Punching holes from the opening of the engine oil pump body to the circular inner wall of the opening, and respectively punching two inclined holes so that the two inclined holes respectively communicate the oil inlet hole and the oil outlet hole with the opening of the engine oil pump body;
(6) Cleaning and degreasing the machined engine oil pump body and the valve plate, and blow-drying;
preferably, the punching method in the step (5) is as follows:
(51) The oil pump body is sleeved on the die, the die is obliquely arranged, the oil pump body is sleeved on the die through an opening and a groove part of the oil pump body, when the oil pump body is sleeved on the die, the oil pump body and the die are in the same inclination angle and clamped by a clamp, and a through hole in the vertical direction is formed in the die;
(52) Starting a drill bit to perform drilling treatment, enabling the drill bit to vertically downwards penetrate through a through hole in the vertical direction on the die and to abut against the side wall of the oil pump body opening, enabling the drill bit to continuously downwards punch holes from the side wall of the oil pump body opening until the holes are communicated into the oil inlet holes;
(53) The drill bit is withdrawn from the die, the clamp is loosened, and the engine oil pump body is taken out from the die;
(54) Setting the turning direction of the engine oil pump body on the die and clamping the engine oil pump body by a clamp;
(55) Starting a drill bit to perform drilling treatment, enabling the drill bit to vertically downwards penetrate through a through hole in the vertical direction on the die and to abut against the side wall of the oil pump body opening, enabling the drill bit to continuously downwards punch holes from the side wall of the oil pump body opening until the holes are communicated into the oil outlet; .
(56) And the drill bit is withdrawn from the die, the clamp is loosened, the engine oil pump body is taken out from the die, and the punching is completed.
As the preferable mode of the invention, the oil pump body is sleeved on the die and positioned with the connecting hole or the oil inlet hole or the oil outlet hole on the oil pump body through the positioning pin.
The beneficial effects are that:
compared with the traditional scheme, the technical scheme of the invention has the advantages that the oil inlet and the oil outlet are respectively communicated with the inner wall of the opening of the engine oil pump body through the inclined holes, and only one inclined hole is drilled from the inner wall of the circular opening to be communicated with the oil inlet and the oil outlet, so that the processing is convenient, the processing difficulty is reduced, the cost is saved, the processing method is simple, the efficiency is high, and meanwhile, a small amount of leaked oil can flow into the engine body of the internal combustion engine, so that the leakage is further prevented.
Drawings
FIG. 1 is a schematic diagram of an oil pump according to the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a schematic diagram of the structure of the oil pump body of the present invention for machining inclined holes.
The components in fig. 1 are: 1. the oil pump comprises an oil pump body 2, a valve plate 3, an outer rotor 4, an inner rotor 5, a locking screw 6, a connecting hole 7, an oil inlet hole 8, an oil outlet hole 9, a pump shaft 10, a pin shaft 11, an inclined hole 12, a workbench 13, a drill bit 14, a drill bit channel 15, a supporting plate 16, a locating pin 17, an air cylinder 18 and a die.
Detailed Description
The invention will be further illustrated by the following drawings and specific examples, which are carried out on the basis of the technical solutions of the invention, it being understood that these examples are only intended to illustrate the invention and are not intended to limit the scope of the invention.
First, the structure of the engine oil pump of the present invention is described, and the engine oil pump as shown in fig. 1 to 2 includes an oil pump body 1, a pump shaft 9, an inner rotor assembly composed of an inner rotor 4, and an outer rotor 3. The pump shaft 9 is fixed with the inner rotor 4 through a pin shaft 10.
The inner rotor 4 and the outer rotor 3 are respectively arranged in the oil pump body 1, a circular opening is further formed in the oil pump body 1, a valve plate 2 is arranged on the opening, the valve plate 2 is in interference fit with the opening of the oil pump body 1, and a locking screw 5 is further arranged between the valve plate 2 and the oil pump body 1. One end of the pump shaft 9 is sleeved in the central hole of the valve plate 2.
The engine oil pump body 1 is also provided with an oil inlet 7 and an oil outlet 8, and the oil inlet 7 and the oil outlet 8 are respectively communicated with the inner wall of the circular opening through an inclined hole 11. The engine oil pump body 1 is also provided with a connecting hole 6 which is fixed with the engine body of the internal combustion engine.
The processing method of the oil pump body is as follows:
(1) Casting a blank of the engine oil pump body 1, wherein a groove is arranged in the engine oil pump body 1, a circular opening structure is arranged at the end face of the engine oil pump body, and a bump for processing the connecting hole 6, the oil inlet hole 7 and the oil outlet hole 8 is arranged on the outer circumference of the engine oil pump body;
(2) Finish machining is carried out on the blank of the cast engine oil pump body 1, including turning round, deburring, and polishing and flattening the opening at the end face;
(3) Processing a connecting hole 6 on the engine oil pump body 1, punching a through hole on a lug for processing the connecting hole on the outer circumference of the engine oil pump body 1 through a drill bit, and penetrating two sides of the lug;
(4) The oil inlet 7 and the oil outlet 8 are processed, holes are punched on the convex blocks for processing the oil inlet 7 and the oil outlet 8 on the outer circumference of the oil pump body 1 through a drill, and the oil inlet 7 and the oil outlet 8 are non-through holes;
(5) Punching holes from the opening of the engine oil pump body to the circular inner wall of the opening, and respectively punching two inclined holes 11, so that the two inclined holes 11 respectively communicate the oil inlet hole 7 and the oil outlet hole 8 with the opening of the engine oil pump body 1; the punching method comprises the following steps:
(51) The oil pump body 1 is sleeved on the die 18, the die 18 is obliquely arranged, the die 18 is fixed on a connection, the connection plate comprises two folded edges, the two folded edges are distributed at an obtuse angle, one folded edge is fixed on a workbench, the die 18 is fixed on the other folded edge, the oil pump body 1 is sleeved on the die 18, when the oil pump body 1 is sleeved on the die, the oil pump body 1 and the die are in the same inclination angle, the positioning pin 16 is further arranged on the folded edge provided with the die 18, and when the oil pump body 1 is installed on the die 18, the connection hole or the oil inlet hole and the oil outlet hole of the oil pump body 1 are positioned through the positioning pin 16 and clamped through the clamp.
In this embodiment, the fixture is an obliquely arranged cylinder 17, when the oil pump body 1 is sleeved on the die, a piston rod of the cylinder 17 extends out to press the oil pump body 1 on the die 18, so that the oil pump body 1 can be clamped, and a through hole in the vertical direction is arranged on the die to serve as the drill bit channel 14 during punching;
(52) Starting a drill bit 13 for drilling, wherein the drill bit 13 vertically downwards passes through a drill bit channel 14 formed by a through hole in the vertical direction on the die and is abutted against the side wall of the opening of the oil pump body 1, and continuously downwards punching the drill bit from the side wall of the opening of the oil pump body until the hole is communicated with the oil inlet hole 7, wherein the hole is the inclined hole 11 in fig. 1;
(53) The drill bit 13 is withdrawn from the die 18, and the clamp is released at the same time, so that the oil pump body 1 is taken out from the die 18;
(54) Setting the turning direction of the engine oil pump body 1 on the die 18 and clamping the engine oil pump body by a clamp;
(55) Starting a drill bit to perform drilling treatment, enabling the drill bit to vertically downwards penetrate through a through hole in the vertical direction on the die and to abut against the side wall of the oil pump body opening, enabling the drill bit to continuously downwards punch holes from the side wall of the oil pump body opening until the holes are communicated into the oil outlet;
(56) And the drill bit is withdrawn from the die, the clamp is loosened, the engine oil pump body is taken out from the die, and the punching is completed.
(6) And cleaning and degreasing the machined engine oil pump body and the valve plate, and drying.
Compared with the traditional scheme, the technical scheme of the invention has the advantages that the oil inlet and the oil outlet are respectively communicated with the inner wall of the opening of the engine oil pump body through the inclined holes, and only one inclined hole is drilled from the inner wall of the circular opening to be communicated with the oil inlet and the oil outlet, so that the processing is convenient, the processing difficulty is reduced, the cost is saved, the processing method is simple, the efficiency is high, and meanwhile, a small amount of leaked oil can flow into the engine body of the internal combustion engine, so that the leakage is further prevented.
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the technical means, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (1)
1. The processing method of the engine oil pump body of the internal combustion engine is characterized by comprising the following steps of:
(1) Casting a blank of the engine oil pump body, wherein a groove is arranged in the engine oil pump body, a circular opening structure is arranged at the end face of the engine oil pump body, and a bump for processing a connecting hole and an oil inlet and an oil outlet is arranged on the outer circumference of the engine oil pump body;
(2) Finish machining is carried out on the blank of the cast engine oil pump body, wherein the finish machining comprises turning round, deburring and polishing an opening at the end face;
(3) Processing a connecting hole on the engine oil pump body, punching a through hole on a lug for processing the connecting hole on the outer circumference of the engine oil pump body through a drill bit, and penetrating two sides of the lug;
(4) The oil inlet and the oil outlet are processed, holes are punched on the convex blocks for processing the oil inlet and the oil outlet on the outer circumference of the engine oil pump body through the drill bit, and the oil inlet and the oil outlet are non-through holes;
(5) Punching holes from the opening of the engine oil pump body to the circular inner wall of the opening, and respectively punching two inclined holes so that the two inclined holes respectively communicate the oil inlet hole and the oil outlet hole with the opening of the engine oil pump body;
(6) Cleaning and degreasing the machined engine oil pump body and the valve plate, and blow-drying;
the punching method in the step (5) comprises the following steps:
(51) The oil pump body is sleeved on the die, the die is obliquely arranged, the oil pump body is sleeved on the die through an opening and a groove part of the oil pump body, when the oil pump body is sleeved on the die, the oil pump body and the die are in the same inclination angle and clamped by a clamp, and a through hole in the vertical direction is formed in the die;
(52) Starting a drill bit to perform drilling treatment, enabling the drill bit to vertically downwards penetrate through a through hole in the vertical direction on the die and to abut against the side wall of the oil pump body opening, enabling the drill bit to continuously downwards punch holes from the side wall of the oil pump body opening until the holes are communicated into the oil inlet holes;
(53) The drill bit is withdrawn from the die, the clamp is loosened, and the engine oil pump body is taken out from the die;
(54) Setting the turning direction of the engine oil pump body on the die and clamping the engine oil pump body by a clamp;
(55) Starting a drill bit to perform drilling treatment, enabling the drill bit to vertically downwards penetrate through a through hole in the vertical direction on the die and to abut against the side wall of the oil pump body opening, enabling the drill bit to continuously downwards punch holes from the side wall of the oil pump body opening until the holes are communicated into the oil outlet;
(66) The drill bit is withdrawn from the die, the clamp is loosened, the engine oil pump body is taken out from the die, and punching is completed;
when the engine oil pump body is sleeved on the die, the engine oil pump body is positioned with a connecting hole or an oil inlet hole or an oil outlet hole on the engine oil pump body through a positioning pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810290694.5A CN108526821B (en) | 2018-04-03 | 2018-04-03 | Method for processing engine oil pump body of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810290694.5A CN108526821B (en) | 2018-04-03 | 2018-04-03 | Method for processing engine oil pump body of internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108526821A CN108526821A (en) | 2018-09-14 |
| CN108526821B true CN108526821B (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810290694.5A Active CN108526821B (en) | 2018-04-03 | 2018-04-03 | Method for processing engine oil pump body of internal combustion engine |
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| CN (1) | CN108526821B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108526821A (en) | 2018-09-14 |
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