CN111546007A - Manufacturing process of copper alloy casting with semicircular inner hole - Google Patents
Manufacturing process of copper alloy casting with semicircular inner hole Download PDFInfo
- Publication number
- CN111546007A CN111546007A CN202010402205.8A CN202010402205A CN111546007A CN 111546007 A CN111546007 A CN 111546007A CN 202010402205 A CN202010402205 A CN 202010402205A CN 111546007 A CN111546007 A CN 111546007A
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- copper alloy
- alloy casting
- inner hole
- solid
- die head
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses a manufacturing process of a copper alloy casting with a semicircular inner hole, which comprises the following steps of: fixing the copper alloy casting on a fixing mechanism; drilling a surface to be machined for the first time to form a main inner hole; filling a solid matched with the main inner hole in the main inner hole; and simultaneously drilling the copper alloy casting and the solid for the second time at the junction of the copper alloy casting and the solid, and simultaneously forming a semicircular inner hole in the copper alloy casting and the solid. It is through filling the solid body of mating to main hole, when secondary drilling, the drill bit is at the in-process of drilling, and the even atress of drill bit has thereby improved the quality of the stability of drilling and having promoted the product.
Description
Technical Field
The invention relates to the field of copper alloy casting, in particular to a manufacturing process of a copper alloy casting with a semicircular inner hole.
Background
Copper alloy has been commonly used in our lives, and copper alloy products such as valve fittings and the like are obtained everywhere; when a main inner hole with a semicircle is required to be drilled in a common copper alloy casting, a large hole is usually drilled first, and then the semicircle inner hole is drilled; however, after the large hole is drilled, only half of the surface of the drill bit is stressed when the semicircular inner hole is drilled, and the copper alloy casting is damaged frequently due to uneven stress in the drilling process.
In view of the above, the applicant has made an intensive study on the above-mentioned defects in the prior art, and has made this invention.
Disclosure of Invention
The invention mainly aims to provide a manufacturing process of a copper alloy casting with a semicircular inner hole, which has the function of stably and quickly punching and drilling the copper alloy casting with the semicircular inner hole.
In order to achieve the above purpose, the solution of the invention is:
1. a manufacturing process of a copper alloy casting with a semicircular inner hole comprises the following steps:
(1) fixing the copper alloy casting on a fixing mechanism;
(2) drilling a surface to be machined for the first time to form a main inner hole;
(3) filling a solid matched with the main inner hole in the main inner hole;
(4) and simultaneously drilling the copper alloy casting and the solid for the second time at the junction of the copper alloy casting and the solid, and simultaneously forming a semicircular inner hole in the copper alloy casting and the solid.
Further, the solid body in the step (3) fills the whole main inner hole.
Further, the solid body in the step (3) is a metal solid body.
Further, the solid body in the step (3) is a solid body with the same material as the copper alloy casting.
Further, the solid body in the step (3) is limited towards the main inner hole direction.
And (3) further, after the second drilling in the step (4) is finished, taking out the solid body to form a copper alloy casting with a semicircular inner hole.
Further, the casting process of the copper alloy casting in the step (1) comprises the following steps:
(1.1) heating and softening the plastic film to prepare a softened plastic film;
(2.1) covering a softened plastic film on the die head;
(3.1) vacuumizing the die head to enable the softened plastic film to be tightly attached to the die head;
(4.1) spraying anti-sticking sand paint on the surface of the softened plastic film;
(5.1) injecting sand, covering the die head, and preparing a sand die;
(6.1) drawing the die head out of the sand mould to form a cavity in the sand mould;
(7.1) punching the softened plastic film in the forming cavity by using a punching device;
(8.1) pouring molten metal into the molding cavity;
and (9.1) cooling and forming.
After the structure is adopted, the invention relates to a manufacturing process of a copper alloy casting with a semicircular inner hole, which comprises the following steps:
(1) fixing the copper alloy casting on a fixing mechanism; prevent the copper alloy casting from shifting during the drilling process to cause workpiece damage.
(2) Drilling a surface to be machined for the first time to form a main inner hole;
(3) filling a solid matched with the main inner hole in the main inner hole;
(4) and simultaneously drilling the copper alloy casting and the solid for the second time at the junction of the copper alloy casting and the solid, and simultaneously forming a semicircular inner hole in the copper alloy casting and the solid.
It is through filling the solid body of mating to main hole, when secondary drilling, the drill bit is at the in-process of drilling, and the even atress of drill bit has thereby improved the quality of the stability of drilling and having promoted the product.
Drawings
FIG. 1 is a schematic structural diagram of a first drilling to be processed in the manufacturing process of a copper alloy casting with a semicircular inner hole.
Fig. 2 is a schematic structural diagram of the second drilling to be processed according to the present invention.
Fig. 3 is a partially enlarged view of a portion a of fig. 2 according to the present invention.
FIG. 4 is a schematic perspective view of a copper alloy casting with a semicircular inner hole according to the present invention.
FIG. 5 is a top view of casting process equipment for copper alloy castings according to the present invention.
FIG. 6 is a process flow diagram of the present invention.
In the figure: a copper alloy casting 1; a fixing mechanism 2; a carrier plate 21; a horizontal limit seat 22; a vertical stopper 23; a solid body 3; a stopper 31; a through circular hole 311; a softening film coating device 4; a spraying device 5; a sand injection device 6; a turning device 7; and a punching device 8.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
As shown in fig. 1 to 6, the manufacturing process of the copper alloy casting 1 with the semicircular inner hole according to the invention comprises the following steps:
(1) fixing the copper alloy casting 1 on a fixing mechanism 2; prevent the copper alloy casting from shifting during the drilling process to cause workpiece damage.
(2) Drilling a surface to be machined for the first time to form a main inner hole;
(3) a solid body 3 matched with the main inner hole is filled in the main inner hole;
(4) and simultaneously drilling the copper alloy casting 1 and the solid body 3 for the second time at the junction of the copper alloy casting and the solid body, and simultaneously forming a semicircular inner hole in the copper alloy casting and the solid body.
As shown in fig. 1, a copper alloy casting 1 is fixed on a fixing mechanism 2, and the fixing mechanism 2 comprises a bearing plate 21, a horizontal limiting seat 22 and a vertical limiting frame 23; the three horizontal limiting seats 22 limit the horizontal movement of the copper alloy casting 1, and the vertical limiting frame 23 limits the vertical movement of the copper alloy casting 1; the copper alloy casting 1 is ensured not to shake during machining, so that machining failure is caused; the copper alloy casting 1 in fig. 1 is subjected to a first drilling process to drill a main bore.
As shown in fig. 2, filling a solid body 3 which is matched with the main inner hole into the main inner hole of the copper alloy casting 1, fixedly connecting a limiting block 31 which limits the solid body 3 to move towards the drilling direction on the surface of the solid body 3, wherein the limiting block 31 is in an elliptical shape, fixedly connecting the limiting block 31 with the surface of the solid body 3 through a nut, and arranging a through round hole 311 on each of two sides of the limiting block 31, wherein the circle center of the round hole is located on the circumference of the main inner hole, and when a second drilling is to be performed, drilling the drill bit towards the inside of the round hole until the processing is finished, so as to obtain the copper alloy casting 1 with the semicircular; and the solid body 3 can be used for a plurality of times, and can be continuously used only by rotating to another angle, thereby saving the processing cost. Through filling the solid 3 that matches to main hole, when secondary drilling, the drill bit is at the in-process of drilling, thereby the even atress of drill bit has improved the quality of the stability of drilling and has promoted the product, has set up stopper 31, has restricted the removal of solid 3, conveniently fixes a position the semicircle hole again for process more quick and stable.
Preferably, the solid body 3 of step (3) fills the entire primary bore. Through filling the solid 3 that matches to main hole, when secondary drilling, the drill bit is at the in-process of drilling, and the even atress of drill bit has thereby improved the quality of the stability of drilling and having promoted the product.
Preferably, the solid 3 of step (3) is a metal solid 3. The solid body 3 is made of metal, and the drill bit is stressed uniformly during secondary drilling.
Preferably, the solid 3 in the step (3) is the solid 3 made of the same material as the copper alloy casting 1. Because the solid 3 and the copper alloy casting 1 are made of the same material, the drill bit is stressed more uniformly during secondary drilling.
Preferably, the solid body 3 in the step (3) is limited towards the main inner hole. The solid body 3 is axially limited, so that the drilling process is more stable.
Preferably, after the second drilling in the step (4) is finished, the solid body 3 is taken out to form the copper alloy casting 1 with the semicircular inner hole.
Preferably, the casting process of the copper alloy casting 1 in step (1) includes the steps of:
a copper alloy casting process comprises the following steps:
(1.1) heating and softening the plastic film to prepare a softened plastic film; the plastic film coating and softening mold device 4 heats the plastic film positioned on the plastic film coating and softening mold device 4 until the plastic film is softened and becomes a softened plastic film.
(2.1) covering a softened plastic film on the die head; the film covering driving device drives the film covering softening die device 4 to move downwards to cover the softened plastic film on the die head.
(3.1) vacuumizing the die head to enable the softened plastic film to be tightly attached to the die head; the vacuumizing device vacuumizes the surface of the die head seat bearing the die head, and when the softened plastic film is covered on the die head, the softened plastic film can be tightly attached to the die head and the die head seat under the action of the vacuumizing device.
(4.1) spraying anti-sticking sand paint on the surface of the softened plastic film; the spraying device 5 sprays sand-sticking-preventing paint on the softened plastic film tightly covering the die head, so that the copper water and the sand are prevented from being mixed together when the copper water is poured.
(5.1) injecting sand, covering the die head, and preparing a sand die; establish a frame at the die head seat upper cover that bears the die head, form and hold the sand chamber, annotate sand device 6 toward holding the sand intracavity and pour into the grit, when the grit fills up and holds the sand chamber after, carry out the compaction, cover the plastic film at the opening that holds the sand chamber, then establish the bottom lid on enclosing the frame, form a sealed and hold the sand chamber, evacuating device stops to carry out the evacuation to the die head seat surface that bears the weight of the die head, carries out the evacuation to holding the sand chamber, guarantees that the grit keeps the compact state constantly.
(6.1) drawing the die head out of the sand mould to form a cavity in the sand mould; and (3) turning the die head bearing the die head and the sand box by 180 degrees through a turning device 7, lifting the die head seat, taking out the die head and forming a forming cavity on the sand mould.
(7.1) punching the softened plastic film in the forming cavity by a punching device 8; guarantee that the gas in the die cavity can in time be discharged, reduce the copper water and produce the bubble when pouring, if having produced the bubble at the copper water in-process of pouring, evacuating device can in time take out the bubble between the copper water, promotes product quality.
(8.1) pouring molten metal into the molding cavity; the metal solution is copper water.
And (9.1) cooling and forming.
Placing a die head seat bearing a die head on a moving device, heating and softening a plastic film below a softening film covering device 4, moving a moving vehicle to the position below the softening film covering device 4, vacuumizing the surface of the die head bearing the die head seat, attaching the softened plastic film to the positions above the die head seat and the die head by the softening film covering device 4, and tightly attaching the softened plastic film to the surface of the die head seat and the surface of the die head because the surface of the die head bearing the die head is vacuumized; the movable trolley moves to the position below the spraying device 5, the spraying device 5 sprays anti-sand sticking coating on the softened plastic film, the upper cover of the die head seat is covered with an enclosure frame to form a sand containing cavity, the movable trolley moves to the position below the sand injection device 6, the sand injection device 6 injects sand into the sand containing cavity until the sand containing cavity is filled, then a layer of plastic film is covered on an opening of the sand containing cavity formed by the die head seat and the fence, and a bottom cover of the sand box is covered; after the bottom cover is covered, stopping vacuumizing the surface of the die head bearing die head of the die head seat, and starting vacuumizing the sand containing cavity to enable sand in the sand containing cavity to be more compact; the locomotive removes turning device 7 department, turning device 7 carries out 180 upsets to die head and sand box, lift the die head seat and take out the die head and form the preforming chamber, the locomotive removes perforating device 8 department, perforating device 8 punches to the plastic film in the preforming intracavity, after the plastic film forms the aperture, can take away the air in the shaping intracavity, it leads to the copper alloy foundry goods quality to descend to reduce the gassing when the copper water is pour, and evacuating device can draw out a small amount of bubbles between the copper water when pouring the copper water, promote the foundry goods quality, erect the psammitolite at last and form the shaping chamber, pour into the copper water toward the shaping intracavity, wait for the shaping of casting after the natural cooling.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.
Claims (7)
1. A manufacturing process of a copper alloy casting with a semicircular inner hole is characterized by comprising the following steps:
(1) fixing the copper alloy casting on a fixing mechanism;
(2) drilling a surface to be machined for the first time to form a main inner hole;
(3) filling a solid matched with the main inner hole in the main inner hole;
(4) and simultaneously drilling the copper alloy casting and the solid for the second time at the junction of the copper alloy casting and the solid, and simultaneously forming a semicircular inner hole in the copper alloy casting and the solid.
2. The manufacturing process for copper alloy castings with semicircular inner holes as claimed in claim 1, wherein the solid body in the step (3) fills the whole main inner hole.
3. The manufacturing process for copper alloy castings with semicircular inner holes as claimed in claim 2, wherein the solid body in the step (3) is a metal solid body.
4. The manufacturing process of the copper alloy casting with the semicircular inner hole is characterized in that the solid body in the step (3) is made of the same material as the copper alloy casting.
5. A process for manufacturing a copper alloy casting with a semicircular inner hole as claimed in claim 4, wherein the solid body in the step (3) is limited towards the main inner hole.
6. The manufacturing process of the copper alloy casting with the semicircular inner hole as claimed in claim 1, wherein the solid body is taken out after the second drilling in the step (4) is finished to form the copper alloy casting with the semicircular inner hole.
7. The manufacturing process of the copper alloy casting with the semicircular inner hole is characterized in that the casting process of the copper alloy casting in the step (1) comprises the following steps:
(1.1) heating and softening the plastic film to prepare a softened plastic film;
(2.1) covering a softened plastic film on the die head;
(3.1) vacuumizing the die head to enable the softened plastic film to be tightly attached to the die head;
(4.1) spraying anti-sticking sand paint on the surface of the softened plastic film;
(5.1) injecting sand, covering the die head, and preparing a sand die;
(6.1) drawing the die head out of the sand mould to form a cavity in the sand mould;
(7.1) punching the softened plastic film in the forming cavity by using a punching device;
(8.1) pouring molten metal into the molding cavity;
and (9.1) cooling and forming the copper alloy casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010402205.8A CN111546007A (en) | 2020-05-13 | 2020-05-13 | Manufacturing process of copper alloy casting with semicircular inner hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010402205.8A CN111546007A (en) | 2020-05-13 | 2020-05-13 | Manufacturing process of copper alloy casting with semicircular inner hole |
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| Publication Number | Publication Date |
|---|---|
| CN111546007A true CN111546007A (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010402205.8A Pending CN111546007A (en) | 2020-05-13 | 2020-05-13 | Manufacturing process of copper alloy casting with semicircular inner hole |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1712060A1 (en) * | 1987-05-11 | 1992-02-15 | Всесоюзный научно-исследовательский институт охраны труда ВЦСПС в г.Свердловске | Method of obtaining casts |
| CN2507591Y (en) * | 2001-09-29 | 2002-08-28 | 太原重型机械(集团)有限公司 | Flat recipient oblate hole fine machining device |
| CN104475679A (en) * | 2014-12-31 | 2015-04-01 | 福建省宝山机械有限公司 | Vacuum forming equipment-based precision casting method of casting products |
| CN104741869A (en) * | 2013-12-30 | 2015-07-01 | 昆山莱捷有色金属有限公司 | Base hole machining method of radiator bracket |
| CN107052262A (en) * | 2016-12-29 | 2017-08-18 | 滁州鑫诺实业有限公司 | A kind of V method model casting techniques for casting electronic appliance mold complex class base |
| CN107269521A (en) * | 2017-08-14 | 2017-10-20 | 浙江威肯特泵业有限公司 | A kind of high-precision high voltage three screw pump bushing and manufacturing process |
| CN110756745A (en) * | 2018-07-28 | 2020-02-07 | 江阴市惠尔信精密装备股份有限公司 | Casting sand mold forming process |
-
2020
- 2020-05-13 CN CN202010402205.8A patent/CN111546007A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1712060A1 (en) * | 1987-05-11 | 1992-02-15 | Всесоюзный научно-исследовательский институт охраны труда ВЦСПС в г.Свердловске | Method of obtaining casts |
| CN2507591Y (en) * | 2001-09-29 | 2002-08-28 | 太原重型机械(集团)有限公司 | Flat recipient oblate hole fine machining device |
| CN104741869A (en) * | 2013-12-30 | 2015-07-01 | 昆山莱捷有色金属有限公司 | Base hole machining method of radiator bracket |
| CN104475679A (en) * | 2014-12-31 | 2015-04-01 | 福建省宝山机械有限公司 | Vacuum forming equipment-based precision casting method of casting products |
| CN107052262A (en) * | 2016-12-29 | 2017-08-18 | 滁州鑫诺实业有限公司 | A kind of V method model casting techniques for casting electronic appliance mold complex class base |
| CN107269521A (en) * | 2017-08-14 | 2017-10-20 | 浙江威肯特泵业有限公司 | A kind of high-precision high voltage three screw pump bushing and manufacturing process |
| CN110756745A (en) * | 2018-07-28 | 2020-02-07 | 江阴市惠尔信精密装备股份有限公司 | Casting sand mold forming process |
Non-Patent Citations (1)
| Title |
|---|
| 陈孝康等: "《实用模具技术手册》", 31 January 2001, 中国轻工业出版社 * |
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Application publication date: 20200818 |
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| RJ01 | Rejection of invention patent application after publication |