JPS63272982A - Method for manufacturing housing of gear pump or the like - Google Patents
Method for manufacturing housing of gear pump or the likeInfo
- Publication number
- JPS63272982A JPS63272982A JP62108067A JP10806787A JPS63272982A JP S63272982 A JPS63272982 A JP S63272982A JP 62108067 A JP62108067 A JP 62108067A JP 10806787 A JP10806787 A JP 10806787A JP S63272982 A JPS63272982 A JP S63272982A
- Authority
- JP
- Japan
- Prior art keywords
- housing
- gate
- gear pump
- gear
- seal hole
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 abstract 1
- 239000011148 porous material Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Casings For Electric Apparatus (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、例えば、ギヤポンプのハウジングを製造す
るのに最適な製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a manufacturing method most suitable for manufacturing, for example, a gear pump housing.
（従来の技術）
一般に、ギヤポンプのハウジングは、鋳型に強制的ある
いは半強制的に溶湯を注入して製造するようにしている
。(Prior Art) Generally, gear pump housings are manufactured by forcibly or semi-forcefully injecting molten metal into a mold.
そして、この場合には、当該金型の湯口より遠い部分か
ら冷却が始まるように、その金型温度を制御して、いわ
ゆる引は巣の発生を防止している。In this case, the temperature of the mold is controlled so that cooling starts from the part of the mold farthest from the sprue, thereby preventing the occurrence of so-called shrinkage cavities.
（本発明が解決しようとする問題点）
上記のように従来の方法でも、引は巣の発生を防止する
手段を講じているが、その湯口近辺に引は巣が発生する
ことまでも防止できなかった。(Problems to be Solved by the Present Invention) As mentioned above, the conventional method also takes measures to prevent the formation of mold cavities, but it cannot even prevent the formation of mold cavities near the sprue. There wasn't.
このように引は巣が発生すると、その部分の強度が弱く
なるが、特に、形状が複雑なものについては、応力集中
係数−が大きくなることと相まって、その強度不足がい
っそう顕著になるという問題があった。
゛
また、この引は巣部分から油が伝わって、油漏れが生じ
るという問題もあった。When evacuation cavities occur in this way, the strength of the part becomes weaker, but especially for objects with complex shapes, the problem is that the lack of strength becomes even more pronounced as the stress concentration factor increases. was there.
゛Also, there was a problem that oil was transmitted from the nest part and oil leakage occurred.
この発明の目的は、湯口近辺での引は巣の発生を前提に
しながら、それを積極的に削除することである。The purpose of the present invention is to proactively eliminate porosity, assuming that it occurs near the sprue.
（問題点を解決する手段）
上記の目的を達成するために、この発明は、金型の湯口
から湯を注入してギヤポンプ等のハウジングを製造する
製造方法において、当該ハウジングに形成する孔部分を
湯口に対応させるとともに、この孔部分を切削加工して
所期の孔を形成するようにしている。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a manufacturing method for manufacturing a housing for a gear pump or the like by injecting hot water from a sprue of a mold. In addition to matching the sprue, this hole is cut to form the desired hole.
（本発明の作用）
金型の湯口近辺に発生した引は巣は、当該ハウジングが
必要とする孔を切削加工するときに、除去される。(Operation of the present invention) The cavities generated near the sprue of the mold are removed when holes required by the housing are cut.
（本発明の効果）
この発明の製造方法によれば、湯口近辺に引は巣が発生
しても、当該ハウジングの孔を形成するときに、その引
は巣も同時に削除できるので、完成したハウジングには
、引は巣が全く無い状態になる。このように引は巣が無
いハウジングを得られるので、その強度が不足したり、
油漏れが生じたりする問題が一切無くなる。(Effects of the present invention) According to the manufacturing method of the present invention, even if a cavity occurs near the sprue, the cavity can be removed at the same time when forming the hole in the housing, so the completed housing By then, there are no nests at all. In this way, you can obtain a housing without cavities, so you can avoid problems such as insufficient strength,
No more problems such as oil leakage.
（本発明の実施例）
第１図はギヤポンプＰを示すもので、このギヤポンプＰ
は、ハウジングＨの一側をカバー〇でふさぐとともに、
上記ハウジングＨにはボディポアｌを形成している。そ
して、これらハウジングＨ及びカバーＣのそれぞれには
、軸受孔２〜５を形成するとともに、これら軸受孔２〜
５に巻ブツシュ６〜９を嵌着している。(Embodiment of the present invention) Fig. 1 shows a gear pump P.
In addition to covering one side of the housing H with a cover 〇,
The housing H has a body pore I formed therein. Bearing holes 2 to 5 are formed in each of the housing H and the cover C, and bearing holes 2 to 5 are formed in each of the housing H and the cover C.
5, the winding bushes 6 to 9 are fitted.
上記のようにしたボディポア１には、駆動ギヤ１０と従
動ギヤ１１とを内装するとともに、これら両ギヤ１０．
１１のギヤ軸１２〜１５を、軸受孔２〜５に嵌合した巻
ブツシュ６〜９に支持させている。The body pore 1 configured as described above is equipped with a driving gear 10 and a driven gear 11, and these two gears 10.
11 gear shafts 12-15 are supported by wound bushings 6-9 fitted in bearing holes 2-5.
そして、上記駆動ギヤ１０のギヤ軸である駆動軸１２は
、ハウジングＨの外方に突出させるとともに、ハウジン
グＨに形成したシール孔１Ｂには。The drive shaft 12, which is the gear shaft of the drive gear 10, is made to protrude outward from the housing H and is inserted into the seal hole 1B formed in the housing H.
シール部材１７を嵌着している。A seal member 17 is fitted.
なお、図中符号１８．１９は、両ギヤ１０．１１の両側
に備えたサイドプレートである。Note that reference numerals 18 and 19 in the figure indicate side plates provided on both sides of both gears 10 and 11.
しかして、上記ハウジングＨを形成するときには、第２
図に示すように、シール孔１６の部分を埋めるようにす
る。しかも、このシール孔１Ｂの部分を、当該金型の湯
口２０の部分に位置させる。しかも、上記金型の湯口２
０より遠い部分から冷却が始まるように、その金型温度
を制御する。このようにすれば、引は巣２１が上記湯口
２０部分に集中する。Therefore, when forming the housing H, the second
As shown in the figure, the seal hole 16 is filled. Furthermore, the seal hole 1B portion is located at the sprue 20 portion of the mold. Moreover, the sprue 2 of the above mold
The mold temperature is controlled so that cooling starts from the part farther from zero. In this way, the evacuation cavities 21 are concentrated in the sprue 20 portion.
上記のようにして成形されたハウジングＨは、第３図に
示すように、機械加工によってシール孔１Ｂを切削する
。このようにシール孔１６を削り取れば、上記用は巣２
１も同時に取り除かれることになる。In the housing H formed as described above, a seal hole 1B is cut by machining, as shown in FIG. If the seal hole 16 is cut out in this way, the hole 2 for the above case will be removed.
1 will be removed at the same time.
第４図はカバーＣ側にボディポアｌを形成したタイプの
ギヤポンプＰを示すもので、そのハウジングＨとカバー
Ｃとを合わせて形状は、上記第１図の場合と全く同様で
ある。FIG. 4 shows a gear pump P of a type in which a body pore I is formed on the cover C side, and the shape of the housing H and cover C together is exactly the same as that shown in FIG. 1 above.
このようなタイプのハウジングＨを形成する場合も、そ
のシール孔１８に対応する部分を湯口２０とするととも
に、当該ハウジングＨを成形した後に、引は巣２１とと
もにシール孔１８を機械加工により切削する。When forming such a type of housing H, the part corresponding to the seal hole 18 is used as the sprue 20, and after the housing H is molded, the seal hole 18 is cut together with the hole 21 by machining. .
上記のようにこの実施例によれば、引は巣２１が最も集
中する湯口の部分を１例えばシール孔等の孔加工可能箇
所に対応させたので、その孔加工の際に引は巣を取り除
くことができる。As described above, according to this embodiment, the part of the sprue where the pores 21 are most concentrated corresponds to a location where holes such as seal holes can be processed, so that the porosity is removed when forming the holes. be able to.
図面第１〜３図はこの発明の実施例を適用したギヤポン
プを示すもので、第１図は断面図、第２図はシール孔を
形成する以前のハウジングの断面図、第３図はシール孔
を形成した後のハウジングの断面図、第４図は別のタイ
プのギヤポンプの断面図である。
Ｐ・・・ギヤポンプ、Ｈ・・・ハウジング、１８・・・
シール孔、２０・・・湯口。Figures 1 to 3 show a gear pump to which an embodiment of the present invention is applied. Figure 1 is a cross-sectional view, Figure 2 is a cross-sectional view of the housing before forming the seal hole, and Figure 3 is a cross-sectional view of the housing before forming the seal hole. FIG. 4 is a cross-sectional view of another type of gear pump. P...Gear pump, H...Housing, 18...
Seal hole, 20... sprue.
Claims (1)
グを製造する製造方法において、当該ハウジングに形成
する孔部分を湯口に対応させるとともに、この孔部分を
切削加工して所期の孔を形成するギヤポンプ等のハウジ
ング製造方法。In a manufacturing method in which hot water is injected from the sprue of a mold to manufacture a housing for a gear pump, etc., a hole formed in the housing is made to correspond to the sprue, and this hole is cut to form the desired hole. Housing manufacturing method for gear pumps, etc.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62108067A JPS63272982A (en) | 1987-05-01 | 1987-05-01 | Method for manufacturing housing of gear pump or the like |
| KR1019880004429A KR880013645A (en) | 1987-05-01 | 1988-04-19 | Casting method of housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62108067A JPS63272982A (en) | 1987-05-01 | 1987-05-01 | Method for manufacturing housing of gear pump or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63272982A true JPS63272982A (en) | 1988-11-10 |
Family
ID=14475043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62108067A Pending JPS63272982A (en) | 1987-05-01 | 1987-05-01 | Method for manufacturing housing of gear pump or the like |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS63272982A (en) |
| KR (1) | KR880013645A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114833306A (en) * | 2022-05-16 | 2022-08-02 | 合肥市瑞宏重型机械有限公司 | Pull rod head casting method |
-
1987
- 1987-05-01 JP JP62108067A patent/JPS63272982A/en active Pending
-
1988
- 1988-04-19 KR KR1019880004429A patent/KR880013645A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114833306A (en) * | 2022-05-16 | 2022-08-02 | 合肥市瑞宏重型机械有限公司 | Pull rod head casting method |
| CN114833306B (en) * | 2022-05-16 | 2024-04-19 | 合肥市瑞宏重型机械有限公司 | Casting method of pull rod head |
Also Published As
| Publication number | Publication date |
|---|---|
| KR880013645A (en) | 1988-12-21 |
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