CN203804223U - Engine oil pump rotor forming die - Google Patents
Engine oil pump rotor forming die Download PDFInfo
- Publication number
- CN203804223U CN203804223U CN201420232625.6U CN201420232625U CN203804223U CN 203804223 U CN203804223 U CN 203804223U CN 201420232625 U CN201420232625 U CN 201420232625U CN 203804223 U CN203804223 U CN 203804223U
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- oil pump
- profile
- punch
- groove
- core
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Abstract
The utility model discloses an engine oil pump rotor forming die which comprises a pressing die, an upper die punch, a lower die punch and a pressing core. A plurality of toothed grooves and toothed protrusions are evenly distributed on the central hole surface of the pressing die at intervals. A pair of radial grooves is symmetrically formed in the outer peripheral surface of the pressing core. Two pairs of radial protrusions are respectively disposed on the central hole surfaces of the lower die punch and the upper die punch, and the two pairs of radial protrusions are opposite. After pressing forming, an inner cavity with the inner shape similar to the shape of an oil pump blank is formed between the pressing die and the pressing core and between the lower die punch and the upper die punch. The engine oil pump rotor forming die has the advantages that a powder metallurgy process is used, powder metallurgy materials can be directly pressed to form an oil pump rotor blank, and accordingly the manufacturing process is simplified, production efficiency and material utilization rate are increased, manufacturing cost is lowered, large-batch production is achieved, and stable product quality, high machining precision, low machining allowance and excellent performance are achieved.
Description
Technical field
The utility model relates to engine component manufacturing technology field, specifically relates to a kind of oil pump for engine rotor forming die.
Background technology
It is raw material that available engine oil Pump rotor adopts steel, by line, cuts or milling processes profile of tooth, centre bore and driving key.Shortcomings is: manufacturing procedure is loaded down with trivial details, need high-precision machining equipment, and production efficiency is low, and stock utilization is low, and machining accuracy is low, and manufacturing cost is higher, cannot realize production in enormous quantities.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of oil pump for engine rotor forming die that can overcome above-mentioned deficiency, it adopts powder metallurgical technique, powdered metallurgical material direct pressing can be shaped to oil pump for engine rotor blank, thereby simplified manufacturing process, production efficiency and stock utilization have been improved, greatly reduce manufacturing cost, be applicable to production in enormous quantities and constant product quality, machining accuracy is high, allowance is little, function admirable.
In order to solve the problems of the technologies described above, the utility model is taked following technical scheme: oil pump for engine rotor forming die, comprise pressing mold, upper punch, bottom punch, pressure core, wherein:
Described pressing mold, which is provided with profile of tooth centre bore, on above-mentioned profile of tooth centre bore face, is uniformly distributed, is arranged at intervals with several profile of tooth groove and toothed projections, and the groove face of this profile of tooth groove is the circular arc field of conjugate action;
Described bottom punch, which is provided with centre bore, on above-mentioned centre bore face, is relatively set with a pair of radial protrusion, in the root bilateral symmetry of radial protrusion, is provided with a pair of arc groove; On the outer circumference surface of bottom punch, be uniformly distributed, be arranged at intervals with several profile of tooth groove and toothed projections, the groove face of this profile of tooth groove is the circular arc field of conjugate action;
Described pressure core, which is provided with step centre bore; Be symmetrically arranged with a pair of radial groove pressing on the outer circumference surface of core, at the opening part of above-mentioned radial groove, be symmetrically arranged with a pair of circular arc projection;
Described upper punch, which is provided with centre bore, on above-mentioned centre bore face, is relatively set with a pair of radial protrusion; Root bilateral symmetry at radial protrusion is provided with a pair of arc groove; On the outer circumference surface of upper punch, be uniformly distributed, be arranged at intervals with several profile of tooth groove and toothed projections, the groove face of this profile of tooth groove is the circular arc field of conjugate action;
The interior type of described pressing mold respectively with the external form of bottom punch, the corresponding setting of the external form of upper punch, form matched in clearance; The external form of described pressure core respectively with the interior type of bottom punch, the corresponding setting of the interior type of upper punch, form matched in clearance; After compressing, at pressing mold and press the akin interior die cavity of external form that has formed a type in it and oil Pump rotor blank between core, bottom punch and upper punch.
Described pressing mold is comprised of die sleeve and core rod, and in the endoporus of die sleeve, interference fit has core rod; On the outer circumference surface of die sleeve, be provided with flange.
Profile of tooth groove on described pressing mold and the quantity of toothed projections are respectively 4～16.
The bottom of described bottom punch is provided with flange; Bottom punch gland is by coordinating with flange and bottom punch being fixed on bottom punch backing plate.
Profile of tooth groove on described bottom punch and the quantity of toothed projections are respectively 4～16.
The lower end of described pressure core is fixedly connected with and is pressed core extension bar by trip bolt.
Radial groove on described pressure core takes the shape of the letter U.
The top of described upper punch is provided with flange.
Profile of tooth groove on described upper punch and the quantity of toothed projections are respectively 4～16.
Compared with the prior art the utility model, has following beneficial effect:
The utility model is the oil pump for engine rotor forming die designing according to the service condition of engine oil pump rotor and powder metallurgical technique feature, and it adopts powder metallurgical technique, powdered metallurgical material direct pressing can be shaped to oil pump for engine rotor blank.For example: the profile of tooth of engine oil pump rotor, centre bore and driving key are by the moulding of oil pump for engine rotor forming die direct pressing.
The utlity model has manufacturing process simple, production efficiency and stock utilization are high, and low cost of manufacture is applicable to the advantages such as constant product quality, the machining accuracy producing in enormous quantities and produce are high, allowance is little, function admirable.
Accompanying drawing explanation
Fig. 1 is the compressing schematic diagram of oil Pump rotor blank;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is pressing mold top view;
Fig. 4 is the B-B cutaway view of Fig. 3;
Fig. 5 is bottom punch top view;
Fig. 6 is the C-C cutaway view of Fig. 5;
Fig. 7 is for pressing core top view;
Fig. 8 is the D-D cutaway view of Fig. 7;
Fig. 9 is upper punch top view;
Figure 10 is the E-E cutaway view of Fig. 9;
Figure 11 is the structure chart of oil Pump rotor blank;
Figure 12 is the F-F cutaway view of Figure 11.
Part description in Fig. 1-Figure 12:
1, pressing mold; 1-1, flange; 1-2, die sleeve; 1-3, core rod; 1-4, profile of tooth groove; 1-5, toothed projections; 1-6, profile of tooth centre bore;
2, upper punch; 2-1, toothed projections; 2-2, profile of tooth groove; 2-3, arc groove; 2-4, radial protrusion; 2-5, centre bore; 2-6, flange;
3, bottom punch; 3-1, profile of tooth groove; 3-2, toothed projections; 3-3, centre bore; 3-4, flange; 3-5, radial protrusion; 3-6, arc groove;
4, press core; 4-1, radial groove; 4-2, circular arc projection; 4-3, centre bore;
5, press core extension bar;
6, trip bolt;
7, bottom punch gland;
8, bottom punch backing plate;
9, oil Pump rotor blank; 9-1, toothed projections; 9-2, profile of tooth groove; 9-3, radial protrusion; 9-4, arc groove; 9-5, centre bore.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
One, the concrete structure of oil pump for engine rotor forming die: with reference to Fig. 1-Figure 10.
As shown in Figure 1 and Figure 2, the utility model oil pump for engine rotor forming die comprises pressing mold 1, upper punch 2, bottom punch 3, presses core 4, wherein:
(1) pressing mold: as shown in Figure 3, Figure 4.
Pressing mold 1 is comprised of die sleeve 1-2 and core rod 1-3, wherein:
This die sleeve 1-2 is cylindrical structure, which is provided with centre bore.In centre bore on die sleeve 1-2, interference fit has core rod 1-3.On the outer circumference surface of die sleeve, be provided with ringwise flange 1-1, for pressing mold is fixed on to pressing machine die carrier.
This core rod 1-3 is cylindrical structure, which is provided with profile of tooth centre bore 1-6, on above-mentioned profile of tooth centre bore face, is uniformly distributed, is arranged at intervals with several profile of tooth groove 1-4 and toothed projections 1-5; The quantity of this profile of tooth groove and toothed projections can be selected arbitrarily between 4～16; In the present embodiment, be respectively 11.The groove face of this profile of tooth groove 1-4 is the circular arc field of conjugate action.
This profile of tooth centre bore 1-6 and profile of tooth groove 1-4 and toothed projections 1-5 are for the tooth-shape structure of compressing oil Pump rotor blank.Core rod 1-3 is made by carbide alloy or import high-strength, high-anti-friction material.
The interior type of pressing mold 1 respectively with the corresponding setting of external form of upper punch 2, bottom punch 3; When compressing, the interior type of pressing mold 1 forms matched in clearance respectively and between the external form of the external form of upper punch 2, bottom punch 3.
(2) bottom punch: with reference to Fig. 5, Fig. 6.
Bottom punch 3 is cylindrical structure, which is provided with centre bore 3-3, a pair of radial protrusion 3-5, two couples of arc groove 3-6, flange 3-4 and several profile of tooth groove 3-1 and toothed projections 3-2, wherein:
On the centre bore face of bottom punch 3, be relatively set with a pair of radial protrusion 3-5; Root bilateral symmetry at each radial protrusion is provided with a pair of arc groove 3-6.
On the outer circumference surface of bottom punch 3, be uniformly distributed, be arranged at intervals with several profile of tooth groove 3-1 and toothed projections 3-2; The quantity of this profile of tooth groove and toothed projections can be selected arbitrarily between 4～16; In the present embodiment, be respectively 11.The groove face of this profile of tooth groove 3-1 is the circular arc field of conjugate action.
In the bottom of bottom punch 3, be provided with ringwise flange 3-4, bottom punch gland 7 is by matching with flange 3-4, thereby bottom punch 3 is fixed on bottom punch backing plate 8.
The corresponding setting of interior type of the external form of bottom punch 3 and pressing mold 1, the interior type of this bottom punch 3 and press the corresponding setting of external form of core 4.When compressing, between the external form of bottom punch 3 and the interior type of pressing mold 1, form matched in clearance, between the interior type of this bottom punch 3 and the external form of pressure core 4, form matched in clearance.
(3) press core: with reference to Fig. 7, Fig. 8.
Press core 4 to be cylindrical structure, which is provided with step centre bore 4-3; On the outer circumference surface of pressing core 4, be symmetrically arranged with a pair of radial groove 4-1 taking the shape of the letter U.This radial groove 4-1 is for the driving key of moulding oil Pump rotor.Opening part at above-mentioned radial groove 4-1 is relatively set with a pair of circular arc projection 4-2, and this circular arc projection 4-2 drives the escape of key root for moulding oil Pump rotor, to prevent that oil Pump rotor from driving the mutual interference between key and driving shaft in assembling process.
Pressing the lower end of core 4 to be fixedly connected with and to press core extension bar 5 by trip bolt 6.
The external form of pressing core 4 respectively with the interior type of upper punch 2, the corresponding setting of the interior type of bottom punch 3; When compressing, the external form of this pressure core 4 respectively and the interior type of upper punch 2, form matched in clearance between the interior type of bottom punch 3.
(4) upper punch: with reference to Fig. 9, Figure 10.
Upper punch 2 is provided with centre bore 2-5, a pair of radial protrusion 2-4, two couples of arc groove 2-3, flange 2-6, several profile of tooth groove 2-2 and toothed projections 2-1, wherein:
On the outer circumference surface of upper punch 2, be uniformly distributed, be arranged at intervals with several profile of tooth groove 2-2 and toothed projections 2-1.The quantity of this profile of tooth groove and toothed projections can be selected arbitrarily between 4～16, in the present embodiment, is respectively 11.The groove face of this profile of tooth groove 2-2 is the circular arc field of conjugate action.
On the centre bore face of upper punch 2, be relatively set with a pair of radial protrusion 2-4; Root bilateral symmetry at each radial protrusion 2-4 is provided with a pair of arc groove 2-3.
At the top of upper punch 2, be provided with flange 2-6, this flange is structure ringwise.
The corresponding setting of interior type of the external form of upper punch 2 and pressing mold 1, the interior type of upper punch 2 and press the corresponding setting of external form of core 4; When compressing oil Pump rotor blank, between the external form of upper punch 2 and the interior type of pressing mold 1, form matched in clearance, between the interior type of this upper punch 2 and the external form of pressure core 4, form matched in clearance.
Two, the course of work of the utility model oil pump for engine rotor forming die is:
Pressing mold 1, upper punch 2, bottom punch 3 and pressure core 4 are arranged on mould bases, and mould bases is fixed on forcing press.
In the interior type of pressing mold 1 and between the external form of the pressure core 4 at pressing mold Nei Xing center, form die cavity in an annular, bottom punch 3 stretches in above-mentioned annular in die cavity from below to up; Like this, just by pressing mold 1, jointly formed one for loading die cavity in the charging of powdered metallurgical material with pressing core 4 and bottom punch 3.In formation charging, between all mould parts of die cavity, be matched in clearance, can be free to slide each other.When compressing, in the external form bottom of upper punch 2 and above-mentioned charging, matched in clearance is also formed at the top of die cavity, also can be free to slide each other.
Before charging, upper punch 2 be positioned at pressing mold 1 directly over, in the bottom of this upper punch 2 and above-mentioned charging, the upper end of die cavity is uncovered corresponding.In die cavity in above-mentioned charging, fill up after powdered metallurgical material, with forcing press, descending and its underpart enters the top of type in pressing mold to upper punch 2; Extruding presses core 4 descending, at the pressure condition lower compression powdered metallurgical material of stipulating, to precalculated position, forms oil Pump rotor blank 9.After compressing completing, at pressing mold 1, bottom punch 3, upper punch 2 with press and form type and the akin interior die cavity of oil Pump rotor blank external form in it between core 4.
Then, pressing mold 1 is descending, and upper punch 2 is up, presses core 4 descending, and the oil Pump rotor blank 9 of moulding is deviate from, and completes a production process.Move in circles successively.
What Figure 11 and Figure 12 were represented is the structure chart by the compressing oil Pump rotor blank of oil pump for engine rotor forming die.
Oil Pump rotor blank 9 comprises toothed projections 9-1, profile of tooth groove 9-2, centre bore 9-5, radial protrusion 9-3, arc groove 9-4, wherein:
On the outer circumference surface of oil Pump rotor blank 9, be uniformly distributed, be arranged at intervals with several toothed projections 9-1 and profile of tooth groove 9-2.The quantity of this toothed projections, profile of tooth groove can be selected arbitrarily between 4～16, in the present embodiment, is respectively 11.The groove face of this profile of tooth groove 9-2 is the circular arc field of conjugate action.
On oil Pump rotor blank 9, be provided with centre bore 9-5; On above-mentioned centre bore face, be relatively set with a pair of radial protrusion 9-3.Root bilateral symmetry at each radial protrusion 9-3 is provided with a pair of arc groove 9-4.
Claims (9)
1. oil pump for engine rotor forming die, is characterized in that,
A, comprise pressing mold (1), upper punch (2), bottom punch (3), press core (4), wherein:
B, described pressing mold (1), which is provided with profile of tooth centre bore (1-6), on above-mentioned profile of tooth centre bore face, be uniformly distributed, be arranged at intervals with several profile of tooth grooves (1-4) and toothed projections (1-5), the groove face of this profile of tooth groove (1-4) is the circular arc field of conjugate action;
C, described bottom punch (3), which is provided with centre bore (3-3), on above-mentioned centre bore face, be relatively set with a pair of radial protrusion (3-5), in the root bilateral symmetry of radial protrusion (3-5), be provided with a pair of arc groove (3-6); On the outer circumference surface of bottom punch (3), be uniformly distributed, be arranged at intervals with several profile of tooth grooves (3-1) and toothed projections (3-2), the groove face of this profile of tooth groove (3-1) is the circular arc field of conjugate action;
D, described pressure core (4), which is provided with step centre bore (4-3); On the outer circumference surface of pressing core (4), be symmetrically arranged with a pair of radial groove (4-1), at the opening part of above-mentioned radial groove (4-1), be symmetrically arranged with a pair of circular arc projection (4-2);
E, described upper punch (2), which is provided with centre bore (2-5), on above-mentioned centre bore face, be relatively set with a pair of radial protrusion (2-4), in the root bilateral symmetry of radial protrusion (2-4), be provided with a pair of arc groove (2-3); On the outer circumference surface of upper punch, be uniformly distributed, be arranged at intervals with several toothed projections (2-1) and profile of tooth groove (2-2), the groove face of this profile of tooth groove (2-2) is the circular arc field of conjugate action;
The interior type of f, described pressing mold (1) respectively with the external form of bottom punch (3), the corresponding setting of external form of upper punch (2), form matched in clearance; The external form of described pressure core (4) respectively with the interior type of bottom punch (3), the corresponding setting of interior type of upper punch (2), form matched in clearance; After compressing, at pressing mold (1) and press the akin interior die cavity of external form that has formed a type in it and oil Pump rotor blank (9) between core (4), bottom punch (3) and upper punch (2).
2. oil pump for engine rotor forming die as claimed in claim 1, is characterized in that, described pressing mold (1) is comprised of die sleeve (1-2) and core rod (1-3), and in the endoporus of die sleeve (1-2), interference fit has core rod (1-3); On the outer circumference surface of die sleeve, be provided with flange (1-1).
3. oil pump for engine rotor forming die as claimed in claim 1 or 2, is characterized in that, the profile of tooth groove (1-4) on described pressing mold and the quantity of toothed projections (1-5) are respectively 4～16.
4. oil pump for engine rotor forming die as claimed in claim 3, is characterized in that, the bottom of described bottom punch (3) is provided with flange (3-4); Bottom punch gland (7) is by coordinating and bottom punch (3) is fixed on bottom punch backing plate (8) with flange (3-4).
5. oil pump for engine rotor forming die as claimed in claim 4, is characterized in that, the profile of tooth groove (3-1) on described bottom punch (3) and the quantity of toothed projections (3-2) are respectively 4～16.
6. oil pump for engine rotor forming die as claimed in claim 5, is characterized in that, the lower end of described pressure core (4) is fixedly connected with and is pressed core extension bar (5) by trip bolt (6).
7. oil pump for engine rotor forming die as claimed in claim 6, is characterized in that, the radial groove (4-1) on described pressure core (4) takes the shape of the letter U.
8. oil pump for engine rotor forming die as claimed in claim 7, is characterized in that, the top of described upper punch (2) is provided with flange (2-6).
9. oil pump for engine rotor forming die as claimed in claim 8, is characterized in that, the toothed projections (2-1) on described upper punch (2) and the quantity of profile of tooth groove (2-2) are respectively 4～16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420232625.6U CN203804223U (en) | 2014-05-08 | 2014-05-08 | Engine oil pump rotor forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420232625.6U CN203804223U (en) | 2014-05-08 | 2014-05-08 | Engine oil pump rotor forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203804223U true CN203804223U (en) | 2014-09-03 |
Family
ID=51443034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420232625.6U Expired - Fee Related CN203804223U (en) | 2014-05-08 | 2014-05-08 | Engine oil pump rotor forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203804223U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889389A (en) * | 2015-06-09 | 2015-09-09 | 宁波汇众粉末机械制造有限公司 | Adjustable mould holder and powder forming and shaping machine with mould holder |
| CN106735056A (en) * | 2015-11-23 | 2017-05-31 | 湖南机油泵股份有限公司 | A kind of Novel oil pump mould |
| CN117920999A (en) * | 2024-03-25 | 2024-04-26 | 烟台东一粉末冶金制造有限公司 | Preparation device of powder metallurgy steering power-assisted oil pump stator and application method thereof |
-
2014
- 2014-05-08 CN CN201420232625.6U patent/CN203804223U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889389A (en) * | 2015-06-09 | 2015-09-09 | 宁波汇众粉末机械制造有限公司 | Adjustable mould holder and powder forming and shaping machine with mould holder |
| CN106735056A (en) * | 2015-11-23 | 2017-05-31 | 湖南机油泵股份有限公司 | A kind of Novel oil pump mould |
| CN106735056B (en) * | 2015-11-23 | 2018-07-27 | 湖南机油泵股份有限公司 | A kind of Novel oil pump mold |
| CN117920999A (en) * | 2024-03-25 | 2024-04-26 | 烟台东一粉末冶金制造有限公司 | Preparation device of powder metallurgy steering power-assisted oil pump stator and application method thereof |
| CN117920999B (en) * | 2024-03-25 | 2024-05-24 | 烟台东一粉末冶金制造有限公司 | Preparation device of powder metallurgy steering power-assisted oil pump stator and application method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20200508 |
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| CF01 | Termination of patent right due to non-payment of annual fee |