CN112387935A - Two-type die of engine camshaft and casting process - Google Patents
Two-type die of engine camshaft and casting process Download PDFInfo
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- CN112387935A CN112387935A CN202011201222.1A CN202011201222A CN112387935A CN 112387935 A CN112387935 A CN 112387935A CN 202011201222 A CN202011201222 A CN 202011201222A CN 112387935 A CN112387935 A CN 112387935A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/20—Stack moulds, i.e. arrangement of multiple moulds or flasks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/086—Filters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to a two-type mold of an engine camshaft and a casting process, wherein the two-type mold of the engine camshaft comprises a sprue gate, an X-shaped sprue channel, a first cavity area, a second cavity area, a third cavity area and a fourth cavity area which are connected with the X-shaped sprue channel, the sprue gate is arranged in the central area of the X-shaped sprue channel, a first cavity and a second cavity are respectively arranged in the first cavity area, the second cavity area, the third cavity area and the fourth cavity area, the first cavity and the second cavity are used for casting engine camshafts with two different specifications, and the first cavity and the second cavity are equidistantly and alternately arranged. The invention provides a two-type die of an engine camshaft and a casting process, wherein two camshafts with different specifications can be simultaneously cast in one die and two dies.
Description
Technical Field
The invention relates to the field of casting, in particular to a two-type die of an engine camshaft and a casting process.
Background
The camshaft is an important component in a piston engine. Its function is to control the opening and closing action of the valve. Because the valve motion law is related to the power and the running characteristics of an engine, the camshaft design occupies a very important position in the design process of the engine. At present, when the camshaft is manufactured, a blank of the camshaft is mostly produced in a casting mode. The casting efficiency of the blank directly affects the production line takt, production capacity, requirement efficiency, etc., and in order to maximize the productivity of the camshaft, the camshaft is usually cast by multiple pieces at a time. In the existing multi-piece casting process of the camshaft, camshaft castings are generally arranged side by side, the production process is complex, and 10 pieces are cast at one time to be the limit in order not to influence the service performance of the castings. The runner of molten iron is longer due to the arrangement mode of a plurality of camshafts, the time for the molten iron to flow into each position in a sand mold after being poured is different, the temperature difference between the inner parts of the mold is larger, and the difference value between the highest temperature and the lowest temperature can reach more than 100 ℃, so that the time for solidifying and cooling the molten iron has larger difference, the fluctuation difference of the mechanical properties (tensile strength, endurance and impact resistance) of a camshaft blank is caused, and the uniformity of the blank quality is influenced.
The conventional patent document 2018101381390 discloses a multi-piece casting process and a casting mold for an engine camshaft, which mainly structurally maximizes the use of space in a mold frame 820 × 820, arranges parts as many as possible, and finally arranges 16 pieces of molded parts, but the mold can only cast one camshaft specification, is slightly insufficient in economical efficiency, and needs to be improved.
Disclosure of Invention
In view of the above, the present invention provides a two-type mold for an engine camshaft and a casting process thereof, wherein two camshafts with different specifications can be simultaneously cast in one mold and two dies.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a two type moulds of engine camshaft, includes sprue gate, "X" type sprue gate way, says first die cavity district, second die cavity district, third die cavity district and the fourth die cavity district of being connected with "X" type sprue gate, the sprue gate is established "X" type sprue gate way central area is regional, all be provided with first die cavity and second die cavity in first die cavity district, second die cavity district, third die cavity district and the fourth die cavity district, first die cavity and second die cavity are used for casting two kinds of different specification engine camshafts, first die cavity and second die cavity equidistance are alternately arranged.
Preferably, the "X" type pouring channel includes a central portion, a first connecting channel, a second connecting channel, a third connecting channel, and a fourth connecting channel connected to the central portion, the pouring gate is provided with the central portion, the first connecting channel is communicated with the first cavity region, the second connecting channel is communicated with the second cavity region, the third connecting channel is communicated with the third cavity region, and the fourth connecting channel is communicated with the fourth cavity region.
Preferably, the first cavity area comprises a first cross gate connected with the X-shaped pouring channel, a plurality of first cavities and a plurality of second cavities connected with the first cross gate, and a plurality of first ingates, the plurality of first cavities and the plurality of second cavities are arranged in parallel at equal intervals, and a first gate flow limiting sheet is further arranged between the first cross gate and the first ingates;
the second cavity area comprises a second cross gate connected with the X-shaped pouring channel, a plurality of first cavities and a plurality of second cavities connected with the second cross gate, and a plurality of second ingates, the plurality of first cavities and the plurality of second cavities are arranged in parallel at equal intervals, and a second gate flow limiting sheet is arranged between the second cross gate and the second ingates;
the third cavity area comprises a third cross gate connected with the X-shaped pouring channel, a plurality of first cavities and a plurality of second cavities connected with the third cross gate, and a plurality of third ingates, the plurality of first cavities and the plurality of second cavities are arranged in parallel at equal intervals, and a third gate flow limiting sheet is arranged between the third cross gate and the third ingates;
the fourth cavity area comprises a fourth cross gate connected with the X-shaped pouring channel, a plurality of first cavities and a plurality of second cavities which are connected with the fourth cross gate, and a plurality of fourth ingates, the plurality of first cavities and the plurality of second cavities are arranged side by side at equal intervals, and a fourth gate flow limiting sheet is further arranged between the fourth cross gate and the fourth ingates.
Preferably, one end of the first connecting channel is communicated with the central part, the other end of the first connecting channel is communicated with the first cross gate, one end of the second connecting channel is communicated with the central part, the other end of the second connecting channel is communicated with the second cross gate, one end of the third connecting channel is communicated with the central part, the other end of the third connecting channel is communicated with the third cross gate, one end of the fourth connecting channel is communicated with the central part, and the other end of the fourth connecting channel is communicated with the fourth cross gate.
Preferably, the first connecting channel intersects with the first cross gate and the included angle is an obtuse angle, the second connecting channel intersects with the second cross gate and the included angle is an obtuse angle, the third connecting channel intersects with the third cross gate and the included angle is an obtuse angle, and the fourth connecting channel intersects with the fourth cross gate and the included angle is an obtuse angle.
Preferably, the first runner is parallel to the third runner, the second runner is parallel to the fourth runner, and the first runner is perpendicular to the second runner.
Preferably, the central part is also provided with a filter screen.
Preferably, the filter screen is a horizontal filter screen.
A casting process adopts a central pouring mode and comprises at least 2 cavity regions which are arranged around a pouring gate at equal intervals; the pouring gate is connected to the cavity region through an X-shaped pouring channel, and the X-shaped pouring channel adopts bottom pouring type horizontal filtering.
Preferably, at least one first cavity and at least one second cavity are arranged in each cavity area.
Compared with the prior art, the invention has the beneficial effects that:
the two-type die of the engine camshaft and the casting process have two output dies in one die, and can simultaneously cast two camshafts with different specifications. Two parts with different specifications are arranged on a set of die in a crossed manner, and 3 years of die sets are estimated according to preset yield, market research and the like, so that compared with the conventional design scheme that each part is designed with one set of die independently, the process can reduce the investment of one set of die and effectively save the development cost; in production, the production takt is shortened, the process saves resources, and the times of replacing the die in production are reduced; using riser feeding design; and the design of the exhaust sheet at the tail end of the cavity is used, so that the bad air holes of the parts are reduced.
Drawings
FIG. 1 is a structural diagram of a two-type mold for an engine camshaft according to an embodiment of the present invention.
FIG. 2 is a partial view of a two-mold for an engine camshaft according to an embodiment of the present invention.
Detailed Description
To facilitate understanding of those skilled in the art, the present invention will be described in further detail below with reference to specific embodiments and the accompanying drawings.
Referring to fig. 1-2, an embodiment of the invention includes:
the utility model provides a two type moulds of engine camshaft, including sprue gate 1, "X" type sprue gate, the first die cavity district of being connected with "X" type sprue gate, the second die cavity district, third die cavity district and fourth die cavity district, sprue gate 1 is established at "X" type sprue gate central zone, first die cavity district, the second die cavity district, all be provided with first die cavity 2 and second die cavity 3 in third die cavity district and the fourth die cavity district, first die cavity 2 and second die cavity 3 are used for casting two kinds of different specification engine camshafts, first die cavity 2 and 3 equidistance of second die cavity are alternately arranged.
The X-shaped pouring channel comprises a central part 4, a first connecting channel 5, a second connecting channel 6, a third connecting channel 7 and a fourth connecting channel 8 which are connected with the central part 4, the pouring gate 1 is provided with the central part 4, the first connecting channel 5 is communicated with a first cavity region, the second connecting channel 6 is communicated with a second cavity region, the third connecting channel 7 is communicated with a third cavity region, and the fourth connecting channel 8 is communicated with a fourth cavity region.
The first cavity area comprises a first cross gate 9 connected with an X-shaped pouring channel, a plurality of first cavities 2 and a plurality of second cavities 3 connected with the first cross gate 9, and a plurality of first inner gates 10, the plurality of first cavities 2 and the plurality of second cavities 3 are arranged side by side at equal intervals, and first gate flow-limiting sheets are further arranged between the first cross gate 9 and the first inner gates 10; the second cavity area comprises a second cross gate 11 connected with the X-shaped pouring channel, a plurality of first cavities 2 and a plurality of second cavities 3 connected with the second cross gate 11, and a plurality of second ingates 12, wherein the plurality of first cavities 2 and the plurality of second cavities 3 are arranged in parallel at equal intervals, and a second gate flow limiting sheet is arranged between the second cross gate 11 and the second ingates 12; the third cavity area comprises a third cross gate 13 connected with the X-shaped pouring channel, a plurality of first cavities 2 and a plurality of second cavities 3 connected with the third cross gate 13, and a plurality of third ingates 14, wherein the plurality of first cavities 2 and the plurality of second cavities 3 are arranged in parallel at equal intervals, and a third gate flow limiting sheet is arranged between the third cross gate 13 and the third ingates 14; the fourth cavity area comprises a fourth runner 15 connected with the X-shaped pouring channel, a plurality of first cavities 2 and a plurality of second cavities 3 connected with the fourth runner 15, and a plurality of fourth ingates 16, wherein the plurality of first cavities 2 and the plurality of second cavities 3 are arranged in parallel at equal intervals, and a fourth runner flow limiting sheet is further arranged between the fourth runner 15 and the fourth ingates 16.
One end of the first connecting channel 5 is communicated with the central part 4, the other end is communicated with the first cross pouring channel 9, one end of the second connecting channel 6 is communicated with the central part 4, the other end is communicated with the second cross pouring channel 11, one end of the third connecting channel 7 is communicated with the central part 4, the other end is communicated with the third cross pouring channel 13, one end of the fourth connecting channel 8 is communicated with the central part 4, and the other end is communicated with the fourth cross pouring channel 15.
The first connecting channel 5 intersects with the first cross gate 9 and forms an obtuse angle, the second connecting channel 6 intersects with the second cross gate 11 and forms an obtuse angle, the third connecting channel 7 intersects with the third cross gate 13 and forms an obtuse angle, and the fourth connecting channel 8 intersects with the fourth cross gate 15 and forms an obtuse angle.
The first runner 9 is parallel to the third runner 13, the second runner 11 is parallel to the fourth runner, and the first runner 9 is perpendicular to the second runner 11.
The central part 4 is also provided with a filter screen. The filter screen is a horizontal filter screen.
A casting process adopts a central casting mode and comprises 4 cavity regions which are arranged around a casting port at equal intervals; the sprue gate is connected to the cavity region through an X-shaped sprue channel, and the X-shaped sprue channel adopts bottom injection type horizontal filtering. All be provided with 2 first die cavities and 2 second die cavities in the die cavity district. The transverse runners of the adjacent cavity regions are vertical, and the cavities of the adjacent cavity regions are also vertical. The whole casting mould is similar to a turned swastika shape.
The innovative process can be divided into five parts, namely a pouring gate, a connecting channel, a cross gate, an inner pouring gate and a cavity. 4 connecting channels and 4 cross runners are arranged in central symmetry, and each 1 cross runner is vertically connected with 4 groups of different cavities. The pouring gate provides enough pressure head, and when the part is finally molded, the cavity is filled with molten iron; the connecting channel guides molten iron to be introduced into the cross gate; the cross pouring channel divides the molten iron introduced by the connecting channel into the cavity; two different part cavities are crossly arranged into 4 cavities on one side and then are rotationally and symmetrically arranged.
The connecting channel is of an overflow groove structure, so that the direct flushing speed of molten iron can be relieved; the higher part of the tail end of the transverse pouring gate can also play a role in slowing flow; the connecting part of the cavity and the cross gate is sequentially provided with a lap joint plate, a riser and an inner pouring gate. The reasonable design of the size of the strap can refine the nodular graphite particle size to a certain extent for the ductile iron parts; the riser has the effect of feeding, the reasonable design of the diameter of the inner sprue can relieve the flow velocity of molten iron, and the bad sand holes can be reduced to a certain extent for sand casting.
In specific implementation, molten iron is poured from a pouring gate, enters the central part, is filtered by a filter screen, and then flows into cross runners of four cavity regions through connecting channels. And then the molten iron flows into each cavity through the inner sprue until the cavities are filled.
The invention adopts a casting mode of central pouring to divide a blank cavity into four cavity areas, the four cavity areas are arranged around the pouring gate and are connected with the pouring gate through the X-shaped pouring gate, the arrangement of the cavity areas is optimized to a great extent, the distance between the pouring gate and the mold cavity is shortened, the utilization rate of molten iron is improved, the production efficiency is improved, the energy is saved and the production cost is reduced. Meanwhile, the optimized arrangement mode reduces the temperature difference of different castings, so that the quality of the castings is more uniform and stable.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
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 (10)
1. The utility model provides a two type moulds of engine camshaft, its characterized in that includes sprue gate (1), "X" type sprue channel, the first die cavity district, second die cavity district, third die cavity district and the fourth die cavity district of being connected with "X" type sprue channel, establish including sprue gate (1) "X" type sprue channel central zone, all be provided with first die cavity (2) and second die cavity (3) in first die cavity district, second die cavity district, third die cavity district and the fourth die cavity district, first die cavity (2) and second die cavity (3) are used for casting two kinds of different specification engine camshafts, first die cavity (2) and second die cavity (3) equidistance are alternately arranged.
2. The two-type mold for the engine camshaft according to claim 1, characterized in that said "X" shaped pouring channel comprises a central portion (4), a first connecting channel (5) connected to the central portion (4), a second connecting channel (6), a third connecting channel (7), a fourth connecting channel (8), said pouring gate (1) being provided with a central portion (4), said first connecting channel (5) communicating with a first cavity region, said second connecting channel (6) communicating with a second cavity region, said third connecting channel (7) communicating with a third cavity region, said fourth connecting channel (8) communicating with a fourth cavity region.
3. The two-type mold for the engine camshaft according to claim 1, characterized in that the first cavity area comprises a first runner (9) connected to the "X" type sprue, a plurality of first cavities (2) and a plurality of second cavities (3) connected to the first runner (9), and a plurality of first gates (10), the plurality of first cavities (2) and the plurality of second cavities (3) being arranged side by side at equal intervals, and a first runner restrictor plate being further provided between the first runner (9) and the first gates (10);
the second cavity area comprises a second cross gate (11) connected with the X-shaped pouring channel, a plurality of first cavities (2) and a plurality of second cavities (3) connected with the second cross gate (11), and a plurality of second ingates (12), the plurality of first cavities (2) and the plurality of second cavities (3) are arranged side by side at equal intervals, and a second gate flow limiting sheet is further arranged between the second cross gate (11) and the second ingates (12);
the third cavity area comprises a third cross gate (13) connected with the X-shaped pouring channel, a plurality of first cavities (2) and a plurality of second cavities (3) connected with the third cross gate (13), and a plurality of third ingates (14), the plurality of first cavities (2) and the plurality of second cavities (3) are arranged in parallel at equal intervals, and a third gate flow limiting sheet is arranged between the third cross gate (13) and the third ingates (14);
the fourth cavity area comprises a fourth runner (15) connected with the X-shaped pouring channel, a plurality of first cavities (2) and a plurality of second cavities (3) connected with the fourth runner (15) and a plurality of fourth ingates (16), the plurality of first cavities (2) and the plurality of second cavities (3) are arranged side by side in an equidistant mode, and a fourth runner flow limiting sheet is further arranged between the fourth runner (15) and the fourth ingates (16).
4. The two-type die for the engine camshaft according to claim 2, wherein the first connecting channel (5) has one end communicating with the central portion (4) and the other end communicating with the first runner (9), the second connecting channel (6) has one end communicating with the central portion (4) and the other end communicating with the second runner (11), the third connecting channel (7) has one end communicating with the central portion (4) and the other end communicating with the third runner (13), and the fourth connecting channel (8) has one end communicating with the central portion (4) and the other end communicating with the fourth runner (15).
5. Two-type die for an engine camshaft according to claim 2, characterized in that said first connecting channel (5) intersects with a first runner (9) and the included angle is obtuse, said second connecting channel (6) intersects with a second runner (11) and the included angle is obtuse, said third connecting channel (7) intersects with a third runner (13) and the included angle is obtuse, and said fourth connecting channel (8) intersects with a fourth runner (15) and the included angle is obtuse.
6. Two-type die for an engine camshaft according to claim 3, characterized in that said first runner (9) is parallel to said third runner (13), said second runner (11) is parallel to said fourth runner, and said first runner (9) is perpendicular to said second runner (11).
7. Two-type die for an engine camshaft according to claim 1, characterized in that the central portion (4) is also provided with a filter screen.
8. The two-type mold for the engine camshaft according to claim 1, wherein the filter screen is a cross filter screen.
9. A casting process is characterized in that a central casting mode is adopted, and the casting process comprises at least 2 cavity regions which are arranged around a casting port (1) at equal intervals; the pouring gate (1) is connected to the cavity region through an X-shaped pouring channel, and the X-shaped pouring channel adopts bottom pouring type horizontal filtering.
10. The casting process according to claim 9, characterized in that at least one first cavity (2) and at least one second cavity (3) are provided in each of said cavity regions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011201222.1A CN112387935A (en) | 2020-11-02 | 2020-11-02 | Two-type die of engine camshaft and casting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011201222.1A CN112387935A (en) | 2020-11-02 | 2020-11-02 | Two-type die of engine camshaft and casting process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112387935A true CN112387935A (en) | 2021-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011201222.1A Pending CN112387935A (en) | 2020-11-02 | 2020-11-02 | Two-type die of engine camshaft and casting process |
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| CN (1) | CN112387935A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203484621U (en) * | 2013-09-24 | 2014-03-19 | 南京宁铁有色合金科技开发有限公司 | Aluminum ingot mold used for tensile test |
| CN205914716U (en) * | 2016-08-24 | 2017-02-01 | 宁夏朗盛精密制造技术有限公司 | Modularization mould template with mode combination reaches and switches mould function alone |
| CN206732072U (en) * | 2017-05-12 | 2017-12-12 | 山东宝鼎重工实业有限公司 | A kind of more ingot casting devices of a disk |
| CN108160934A (en) * | 2018-02-10 | 2018-06-15 | 东风本田汽车零部件有限公司 | A kind of engine cam more than one piece casting technique and casting mould |
-
2020
- 2020-11-02 CN CN202011201222.1A patent/CN112387935A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203484621U (en) * | 2013-09-24 | 2014-03-19 | 南京宁铁有色合金科技开发有限公司 | Aluminum ingot mold used for tensile test |
| CN205914716U (en) * | 2016-08-24 | 2017-02-01 | 宁夏朗盛精密制造技术有限公司 | Modularization mould template with mode combination reaches and switches mould function alone |
| CN206732072U (en) * | 2017-05-12 | 2017-12-12 | 山东宝鼎重工实业有限公司 | A kind of more ingot casting devices of a disk |
| CN108160934A (en) * | 2018-02-10 | 2018-06-15 | 东风本田汽车零部件有限公司 | A kind of engine cam more than one piece casting technique and casting mould |
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Application publication date: 20210223 |