JPS5881548A - Low pressure die casting method of wheel - Google Patents
Low pressure die casting method of wheelInfo
- Publication number
- JPS5881548A JPS5881548A JP18061081A JP18061081A JPS5881548A JP S5881548 A JPS5881548 A JP S5881548A JP 18061081 A JP18061081 A JP 18061081A JP 18061081 A JP18061081 A JP 18061081A JP S5881548 A JPS5881548 A JP S5881548A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- air
- molten metal
- wheel
- casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
【発明の詳細な説明】
この発明にホイールの鋳造法において、鋳造サイクルを
短縮し生産性を向上させることを目的としたホイールの
低圧金型鋳造法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a low-pressure die casting method for wheels, which aims to shorten the casting cycle and improve productivity.
従来この種のホイール鋳造法には重力鋳造、低圧鋳造、
ダイキャスト及び溶湯鍛造法等がある。Traditionally, this type of wheel casting method includes gravity casting, low pressure casting,
There are die casting and molten metal forging methods.
ここでダイキャスト及び溶湯鍛造法は鋳造サイクルが約
2分といわれており、重力鋳造、低圧鋳造等に比べて生
産性もよいが品質1歩留り面に2いてやや問題が残され
ており、金型コスト的にも重力鋳造や低圧鋳造より不利
とされている。The casting cycle for die casting and molten metal forging is said to be about 2 minutes, and although the productivity is better than gravity casting, low pressure casting, etc., there are still some problems in terms of quality (1) and yield (2). It is also considered disadvantageous compared to gravity casting or low pressure casting in terms of mold cost.
従来の低圧鋳造法の鋳造装置の構造例は第1図の如くで
あり、@2図のサイクルタイムにより鋳造されている。An example of the structure of a conventional low-pressure casting casting apparatus is shown in FIG. 1, and casting is performed using the cycle time shown in FIG. 2.
第1図においてホイール(ワーク)1の金型は上型2、
下型3、左右に型開きする横型4a、4bからなり固定
プラテン5、可動プラテン6に装着されている。上記可
動プラテン6は加圧シリンダ7にて上下に移動し横型4
a、4bは横型移動シリンダ15a、15bにて左右に
開くようになっている。上記固定プラテン5には溶湯る
りぼ8内の溶湯をダウンチューブ9を介して金型内に注
入するノズル10が設けられている。溶湯るつぼ8の外
周にはヒーター11が設けられ、溶湯を加熱するととも
に保温材12とともに保持炉13内に設置されている。In Fig. 1, the mold of wheel (work) 1 is upper mold 2,
It consists of a lower mold 3 and horizontal molds 4a and 4b that open left and right, and are attached to a fixed platen 5 and a movable platen 6. The above-mentioned movable platen 6 is moved up and down by a pressure cylinder 7, and the horizontal type 4
a and 4b are configured to open left and right by horizontal movement cylinders 15a and 15b. The fixed platen 5 is provided with a nozzle 10 for injecting the molten metal in the molten metal pot 8 into the mold via the down tube 9. A heater 11 is provided around the outer periphery of the molten metal crucible 8 to heat the molten metal, and is installed in a holding furnace 13 together with a heat insulating material 12.
また上記保持炉13には空気導入排出口14aが設けら
れ、空気導入排出管14を通じて所定圧の空気が送気さ
れると、るつぼ8内の溶湯が表面圧力によりダウンチュ
ーブ9を経てノズル10から金型内に注入される。従来
の低圧鋳造法はW、2図に示す如くA点の0.51に達
するまで保持炉内の空気が加圧され、るつぼ8内の溶湯
が金型内に注入される。この状態で8点1でその圧力を
保持し、B点で保持炉13内の空気を空気導入排出管1
4を通じて抜き去り、0点から0点1で金型内で保持し
て冷却する。この間約8分間で1サイクルを完了し%第
3図に示す如く型より取出すものである。第3図にホイ
ール1を型より取出す方法を示す図であるが%D点(第
2図)において横型4a、4bt’外し可動プラテン6
を上昇せしめると下型は固定プラテン5上に残りホイー
ル1は上型に付着して上昇する。一定距離以上、上昇す
ると上型に取付けであるエゼクタ−ビン16がエゼクタ
−プラテン17に突き当たるのでビン16の先端が上型
2より突出し、ホイール1(ワーク)を上型より外すと
共に下部に移動してきたホイール受け18上に落下せし
めるものである。上型には3°〜4°の抜は勾配を付す
ことにより、ホイール1が上型に付着して上昇すると共
に、エゼクタ−ビン16で抜けるようにしである。Further, the holding furnace 13 is provided with an air inlet/outlet port 14a, and when air at a predetermined pressure is sent through the air inlet/outlet pipe 14, the molten metal in the crucible 8 passes through the down tube 9 due to the surface pressure and exits the nozzle 10. Injected into the mold. In the conventional low-pressure casting method, as shown in FIG. 2, the air in the holding furnace is pressurized until it reaches point A of 0.51, and the molten metal in the crucible 8 is injected into the mold. In this state, the pressure is maintained at point 8, and at point B, the air in the holding furnace 13 is introduced into the air inlet and discharge pipe 1.
4, and held in the mold from point 0 to point 1 and cooled. During this time, one cycle is completed in about 8 minutes, and the sample is removed from the mold as shown in FIG. FIG. 3 is a diagram showing how to take out the wheel 1 from the mold.
When the lower mold is raised, the lower mold remains on the fixed platen 5, and the wheel 1 is attached to the upper mold and raised. When it rises above a certain distance, the ejector bin 16 attached to the upper die hits the ejector platen 17, so the tip of the bin 16 protrudes from the upper die 2, and the wheel 1 (workpiece) is removed from the upper die and moves to the lower part. The wheel receiver 18 is caused to fall onto the wheel receiver 18. The upper mold is provided with a drafting slope of 3° to 4° so that the wheel 1 adheres to the upper mold and rises, and at the same time is removed through the ejector bin 16.
以上説明したように従来の低圧鋳造法に、ワーク1を型
から取出すのに1サイクル8分程度かかり生産性が低く
、又ワーク1を上型のエゼクタ−ビン16で外し、ホイ
ール受け18上に落下せしめるので、上型よりの取外し
時と落下時のショックにより、ホイールに歪みが生ずる
ことがあり、従って歪量を見込んだ仕上代が必要であり
、父型から抜けない場合、無理に外すことにより不良品
の出る率も多かった。As explained above, in the conventional low-pressure casting method, it takes about 8 minutes per cycle to take out the workpiece 1 from the mold, resulting in low productivity. Since the wheels are allowed to fall, the shock caused when they are removed from the upper mold and when they fall may cause distortion in the wheels.Therefore, a finishing allowance that takes into account the amount of distortion is required. This resulted in a high rate of defective products.
この発明は上述した事情にもとづ−てなされたものであ
り、低圧鋳造法を改良して従来1サイクル約7〜8分を
必要としているが、これを強制冷却、2段圧加、ワーク
取出しの改良等によりサイクルタイムを1/3にし、削
り代を少なくし、不良率を低下せしめ、生産性向上をは
かる、ホイールの低圧金型鋳造法を提供するものである
。This invention has been made based on the above-mentioned circumstances, and is an improvement on the low-pressure casting method, which conventionally required about 7 to 8 minutes per cycle, by forced cooling, two-stage pressurization, and workpiece casting. The present invention provides a low-pressure die casting method for wheels that reduces the cycle time to 1/3, reduces machining allowance, lowers the defective rate, and improves productivity through improvements in ejecting.
以下、この発明による実施例を第4図〜第7図にもとづ
いて詳細に説明する。第4図はこの発明に使用する鋳造
装置の構造図である。第5図にこの発明の方法の1サイ
クルと従来の方法の1サイクルとを示すグラフであり、
実線はこの発明の方法を、点線に従来の方法を示してい
る。第6図、第7図はこの発明の詳細な説明図であり、
第6図に横型を外した場合、第7図は更に上型も外し・
・ブ面を冷却してワーク増重し装置を使用する場合の説
明図である。Hereinafter, embodiments of the present invention will be described in detail based on FIGS. 4 to 7. FIG. 4 is a structural diagram of a casting apparatus used in the present invention. FIG. 5 is a graph showing one cycle of the method of the present invention and one cycle of the conventional method,
The solid line shows the method of this invention, and the dotted line shows the conventional method. 6 and 7 are detailed explanatory diagrams of this invention,
If the horizontal mold is removed in Figure 6, the upper mold is also removed in Figure 7.
- It is an explanatory diagram when using a device that cools the surface of the workpiece and increases the weight of the workpiece.
第4図及び第5図0〜A線で示す如くまず、るつぼ8内
に溶湯が満たされており、空気導入排出口14aより圧
気を吹込むと、るつぼ8内の溶湯表面に圧力がかかり溶
湯がダウンチューブ9よりノズル10を通って金型内に
入り、ホイール1が鋳造はれる。A点の約0.5 YJ
の圧力で金型に溶湯が充満すると、この状態でE点筐で
保持するが。As shown by lines 0 to A in FIGS. 4 and 5, the crucible 8 is first filled with molten metal, and when pressurized air is blown from the air inlet/outlet 14a, pressure is applied to the surface of the molten metal in the crucible 8, causing the molten metal to melt. enters the mold from the down tube 9 through the nozzle 10, and the wheel 1 is cast. Approximately 0.5 YJ of point A
When the mold is filled with molten metal under the pressure of , it is held in this state at point E.
この点1では従来法と同じである。次に押湯効果のため
約1〜2艷に保持炉13の圧力を上昇させ。This point 1 is the same as the conventional method. Next, the pressure in the holding furnace 13 is increased by about 1 to 2 liters to create a riser effect.
F点で第6図に示す如く横型4a、4bを開き点線矢印
の如く空気を吹付けて、リムコンタ一部の強制冷却を行
なう。−万加圧を保持した1ま、ディスク部の押湯を行
ない、G点で保持炉13内の空5−
気を空気導入排出管14を通じて抜き去り第7図に示す
如く上型2を開放すると共に空気噴射孔2゜から空気に
よりホイール1の・・ブ面を急速冷却した後または強制
冷却しつつH点でワーク取出しを行う。ワーク取出しは
第3図の如き従来法でなく第7図に示す如くワーク取出
し装置19を用いて下型より静かに掴んで取り出す方法
をとるので歪が生ぜず、削り代は従来約1.51111
〜20必要であったのが約0.5nでよい。なおA点か
らそのままF点まで圧力を上げるとパリが大きくなるの
でA→Eの保持が必要であり、又B点よりF点までの!
2段の昇圧とF点よりG点までの圧力保持は押湯効果の
為であり、F点にてリムコンタ一部を強制冷却する時に
、ディスク部は厚肉であるため凝固が遅いので、強制冷
却時の収縮により湯が引けて巣ができるのを防止するた
めである。以上の方法によりこの発明でflH点でワー
ク取り出しが可能となる。At point F, as shown in FIG. 6, the horizontal molds 4a and 4b are opened and air is blown as shown by the dotted arrows to forcibly cool a portion of the rim contour. - The disk section is heated until 1,000 yen is maintained, and at point G, the air inside the holding furnace 13 is removed through the air introduction and discharge pipe 14, and the upper mold 2 is opened as shown in Fig. 7. At the same time, the workpiece is taken out at point H after the surface of the wheel 1 is rapidly cooled by air from the air injection hole 2° or while being forcedly cooled. Instead of the conventional method shown in Fig. 3, the workpiece is taken out using the workpiece take-out device 19 shown in Fig. 7, which gently grabs it from the lower die and takes it out, so no distortion occurs, and the machining allowance is approximately 1.51111mm compared to the conventional method.
~20 was required, but only about 0.5n is needed. Note that if the pressure is increased directly from point A to point F, the pressure will increase, so it is necessary to maintain A → E, and from point B to point F!
The two-stage pressure increase and the pressure retention from point F to point G are due to the riser effect. This is to prevent the formation of cavities due to the shrinkage of hot water during cooling. With the above method, the present invention allows workpiece removal at the flH point.
以上詳細に説明したように、この発明によるホイールの
低圧鋳造法によれば、所定の第1段の圧= 6−
力で鋳造し所要の時間、保持した後保持炉の圧力を第2
段の圧力に上昇させ、所定の圧力に到達した時に横型を
開き、その圧力を所要時間保持した捷、F IJムコン
タ一部の強制冷却を行って後上型を開放し、同時に・・
ブ面の急速冷却を行ってワークを取り出すので、1サイ
クルの時間を従来法の115程度に短縮することができ
、ワークをワーク取出し装置により掴んで下型より静か
に取出すので、歪が生ぜず削り代が従来に比べて少なく
てすみ、不良庫が少なく生産性が高い。1だ冷風による
強制冷却を行うので組織が密になり製品の品質を同士さ
せることかできる等の効果l奏する。なお従来の如くホ
イール(ワーク)を上型に付着して持上げる必要がない
ので、抜は勾配を自由に設定でき、2インプレツシヨン
にも適用できる等の効果もある。As explained in detail above, according to the low-pressure casting method for wheels according to the present invention, after casting at a predetermined first-stage pressure = 6-force and holding for a required time, the pressure in the holding furnace is reduced to a second-stage pressure.
When the pressure reaches the predetermined pressure, the horizontal mold is opened, and the pressure is maintained for the required time. After forced cooling of part of the FIJ mukonta, the upper mold is opened, and at the same time...
Since the workpiece is taken out after rapid cooling of the mold surface, the time for one cycle can be shortened to about 115 times compared to the conventional method.The workpiece is grabbed by the workpiece takeout device and taken out gently from the lower mold, so no distortion occurs. There is less machining allowance compared to conventional methods, and there are fewer defects and higher productivity. 1) Since forced cooling is performed using cold air, the structure becomes denser and the quality of the product can be improved. In addition, since there is no need to attach the wheel (workpiece) to the upper die and lift it as in the conventional method, the drafting slope can be set freely, and there are also effects such as being applicable to 2-impression.
第1図は従来の鋳造装置の構造図、第2図は従来の低圧
鋳造法の1サイクルン示すグラフ、第3図は従来のワー
ク取出しの説明図、第4図はこの発明の鋳造装置の構造
図、第5図はこの発明の方法の1サイクルと従来の方法
の1サイクルとを示すグラフ、第6図にこの発明の詳細
な説明する横型を外した場合の図、第7図は同、横型と
上型を外し、ワーク取出し装置を使用する場合の説明図
である。
1・・・ホイール(ワーク)、2・・・上型、3・・・
下型、4a、4b・・・横型、13・・・保持炉、19
・・・ワーク取出し装置。
特許出願人 トピー工業株式会社
代理人 弁理士 佐 藤 英 昭
牙」l偽
計21q
計51も
−9う
牙4図
牙5閣
1九久必Fig. 1 is a structural diagram of a conventional casting device, Fig. 2 is a graph showing one cycle of the conventional low pressure casting method, Fig. 3 is an explanatory diagram of conventional workpiece removal, and Fig. 4 is a diagram of the casting device of the present invention. Structure diagram, Figure 5 is a graph showing one cycle of the method of this invention and one cycle of the conventional method, Figure 6 is a diagram showing the detailed explanation of this invention when the horizontal type is removed, and Figure 7 is the same diagram. , is an explanatory diagram when the horizontal mold and the upper mold are removed and the workpiece take-out device is used. 1...Wheel (work), 2...Upper die, 3...
Lower mold, 4a, 4b...Horizontal type, 13...Holding furnace, 19
...Workpiece take-out device. Patent applicant Topy Industries Co., Ltd. agent Patent attorney Hide Sato Akiaki 1 fake total 21q Total 51 - 9 Uga 4 Illustrations 5 Cabinets 1 Nine Kubi
Claims (1)
イールを鋳造し、所定時間保持した後、第1段よりも高
い第2段の圧力を加え、所定の圧力に到達した時、横型
を解放し、リム外面を強制冷却しつつ所定時間保持した
後、圧力を抜くと同時に上型を解放し、−ブ面を強制冷
却した後、または強制冷却しつつ、ワークを取り出す如
くしたことを特徴とする、ホイールの低圧金型鋳造法。In the wheel casting method, the wheel is cast at a predetermined first-stage pressure, held for a predetermined time, and then a second-stage pressure higher than the first stage is applied, and when the predetermined pressure is reached, the horizontal type is cast. After releasing the rim and holding it for a predetermined time while forcing the outer surface of the rim to cool, the upper mold is released at the same time as the pressure is released, and the workpiece is taken out after the rim surface is forcibly cooled or while it is being forcedly cooled. A low-pressure die casting method for wheels.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18061081A JPS5881548A (en) | 1981-11-11 | 1981-11-11 | Low pressure die casting method of wheel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18061081A JPS5881548A (en) | 1981-11-11 | 1981-11-11 | Low pressure die casting method of wheel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5881548A true JPS5881548A (en) | 1983-05-16 |
JPS613584B2 JPS613584B2 (en) | 1986-02-03 |
Family
ID=16086245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18061081A Granted JPS5881548A (en) | 1981-11-11 | 1981-11-11 | Low pressure die casting method of wheel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5881548A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60170567A (en) * | 1984-02-13 | 1985-09-04 | Topy Ind Ltd | Method for casting under cooling with water mist |
JPS60196255A (en) * | 1984-03-19 | 1985-10-04 | Topy Ind Ltd | Low-pressure casting method of aluminum wheel |
JPS6462264A (en) * | 1987-09-02 | 1989-03-08 | Isuzu Mfg | Low-pressure casting machine |
US5320160A (en) * | 1988-07-31 | 1994-06-14 | Asahi Katantetsu Kabushiki Kaisha | Casting device, method for using the device, casting device of vehicle wheel, method for using the device, and vehicle wheel |
EP1900457A1 (en) * | 2006-09-13 | 2008-03-19 | Georg Fischer Druckguss GmbH & Co. KG | Method and apparatus for producing castings from light alloys |
KR101061733B1 (en) * | 2009-01-16 | 2011-09-02 | (주)태성알로이 | Disks of aluminum bronze butterfly valves made from low pressure castings containing copper and aluminum and methods for their preparation |
CN105499513A (en) * | 2015-12-23 | 2016-04-20 | 哈尔滨工业大学 | Device for manufacturing automobile aluminum alloy wheel hubs through liquid filling, local pressurizing and feeding and method thereof |
CN106670436A (en) * | 2017-01-03 | 2017-05-17 | 浙江六和轻机械有限公司 | Casting method of aluminum alloy wheel hub |
CN109759563A (en) * | 2019-03-26 | 2019-05-17 | 佛山市灿东模具技术有限公司 | A kind of high-pressure fog cooling casting moulding process |
CN110695339A (en) * | 2019-10-12 | 2020-01-17 | 保定市立中车轮制造有限公司 | Point cooling low-pressure casting mold capable of reducing bottom mold deformation |
-
1981
- 1981-11-11 JP JP18061081A patent/JPS5881548A/en active Granted
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60170567A (en) * | 1984-02-13 | 1985-09-04 | Topy Ind Ltd | Method for casting under cooling with water mist |
JPH0237818B2 (en) * | 1984-02-13 | 1990-08-27 | Topy Ind | |
JPS60196255A (en) * | 1984-03-19 | 1985-10-04 | Topy Ind Ltd | Low-pressure casting method of aluminum wheel |
JPS6462264A (en) * | 1987-09-02 | 1989-03-08 | Isuzu Mfg | Low-pressure casting machine |
US5320160A (en) * | 1988-07-31 | 1994-06-14 | Asahi Katantetsu Kabushiki Kaisha | Casting device, method for using the device, casting device of vehicle wheel, method for using the device, and vehicle wheel |
US5527101A (en) * | 1988-07-31 | 1996-06-18 | Asahi Katantetsu Kabushiki Kaisha | Casting device, method for using the device, casting device of vehicle wheel, method for using the device, and vehicle wheel |
EP0722795A2 (en) * | 1988-07-31 | 1996-07-24 | Asahi Katantetsu Kabushiki Kaisha | Method and device for casting vehicle wheels |
EP0722795A3 (en) * | 1988-07-31 | 1996-07-31 | Asahi Katantetsu Kabushiki Kaisha | Method and device for casting vehicle wheels |
EP1900457A1 (en) * | 2006-09-13 | 2008-03-19 | Georg Fischer Druckguss GmbH & Co. KG | Method and apparatus for producing castings from light alloys |
WO2008031745A1 (en) * | 2006-09-13 | 2008-03-20 | Georg Fischer Druckguss Gmbh & Co. Kg | Method and device for producing castings from lightweight metal |
KR101061733B1 (en) * | 2009-01-16 | 2011-09-02 | (주)태성알로이 | Disks of aluminum bronze butterfly valves made from low pressure castings containing copper and aluminum and methods for their preparation |
CN105499513A (en) * | 2015-12-23 | 2016-04-20 | 哈尔滨工业大学 | Device for manufacturing automobile aluminum alloy wheel hubs through liquid filling, local pressurizing and feeding and method thereof |
CN106670436A (en) * | 2017-01-03 | 2017-05-17 | 浙江六和轻机械有限公司 | Casting method of aluminum alloy wheel hub |
CN106670436B (en) * | 2017-01-03 | 2018-08-03 | 浙江六和轻机械有限公司 | A kind of casting aluminium alloy wheel hub method |
CN109759563A (en) * | 2019-03-26 | 2019-05-17 | 佛山市灿东模具技术有限公司 | A kind of high-pressure fog cooling casting moulding process |
CN110695339A (en) * | 2019-10-12 | 2020-01-17 | 保定市立中车轮制造有限公司 | Point cooling low-pressure casting mold capable of reducing bottom mold deformation |
CN110695339B (en) * | 2019-10-12 | 2021-09-03 | 保定市立中车轮制造有限公司 | Five-open type side die hub casting die |
Also Published As
Publication number | Publication date |
---|---|
JPS613584B2 (en) | 1986-02-03 |
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