JPS5938519B2 - Model gun manufacturing method - Google Patents
Model gun manufacturing methodInfo
- Publication number
- JPS5938519B2 JPS5938519B2 JP14671077A JP14671077A JPS5938519B2 JP S5938519 B2 JPS5938519 B2 JP S5938519B2 JP 14671077 A JP14671077 A JP 14671077A JP 14671077 A JP14671077 A JP 14671077A JP S5938519 B2 JPS5938519 B2 JP S5938519B2
- Authority
- JP
- Japan
- Prior art keywords
- insert
- hardness
- manufacturing
- model
- mold
- 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.)
- Expired
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 229910000978 Pb alloy Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 229910001234 light alloy Inorganic materials 0.000 claims 1
- 238000005496 tempering Methods 0.000 claims 1
- 238000005266 casting Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 241000226585 Antennaria plantaginifolia Species 0.000 description 1
- 238000007550 Rockwell hardness test Methods 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【発明の詳細な説明】 本発明はモデルガンの製法に関する。[Detailed description of the invention] The present invention relates to a method for manufacturing a model gun.
現在モデルガンを製造する場合は、改造銃を防止するた
め、銃砲刀剣類取締法により、各種銃の銃身は棒状にし
て該銃身の基部に一定の形状を有するインサートを鋳造
時に埋設する様義務付けられている。Currently, when manufacturing model guns, in order to prevent modified guns, the Firearms and Swords Control Law requires that the barrels of various types of guns be made into rods and that inserts with a certain shape be embedded in the base of the barrels during casting. ing.
しかし該インサートは第１図に示す様に構成され、銃身
基部ａに鋳込んだインサートｂはＣの部分がロックウェ
ル硬さ試１験方法（日本工業規格Ｚ２２４５）により測
定した硬さがＨＲＣ６０以上の鋼材であり、ｄの部分が
超硬合金（日本工業規格５５０１ ）であり銃身の外径
に対し一定の大きさが規定されているが、硬度の高い鋼
材に成ると、材料コストが高揚するため、できるだけ規
定硬度に近いインサートａの材料を用いる必要があるが
、鋳造成形する際その鋳造温度（４００〜４５０°Ｃ）
によって焼きもどりが生じ上記インサー）ａの硬度が６
度位低下し、規定の硬度を維持することが不可能である
。However, the insert is constructed as shown in Figure 1, and the part C of the insert b cast into the barrel base a has a hardness of HRC 60 or more as measured by the Rockwell hardness test 1 test method (Japanese Industrial Standard Z2245). The part d is made of cemented carbide (Japanese Industrial Standards 5501), and a certain size is specified for the outside diameter of the gun barrel, but the higher the hardness of the steel, the higher the material cost. Therefore, it is necessary to use insert a material that has a hardness as close to the specified hardness as possible, but when casting, the casting temperature (400 to 450°C)
As a result, the hardness of the above insert) a is 6.
The degree of hardness decreases and it is impossible to maintain the specified hardness.
本発明は上記点に鑑み、モデルガンの製造にあたってイ
ンサートに鋳造熱の影響による硬度低下を生せしめない
製法を提唱することを目的とするもので、本発明によれ
ばインサートの硬度が低下しないため、規定硬度のイン
サートを銃身の基部に鋳込めば良いものである。In view of the above points, it is an object of the present invention to propose a manufacturing method that does not cause a decrease in hardness of inserts due to the influence of casting heat when manufacturing model guns. , an insert of specified hardness can be cast into the base of the barrel.
今、本発明の一実施例を図面に従って説明するに、第２
図、第３図はモデルガン要部の断面図、第４図は埋設部
材の斜視図である。Now, one embodiment of the present invention will be described with reference to the drawings.
3 are sectional views of the main parts of the model gun, and FIG. 4 is a perspective view of the buried member.
通常即鉛合金で鋳造一体成型される針本体１の銃身２に
相当する基部２ａの軸心に規定硬度（ＨＲＣ６０）以上
の鋼製インサート３を嵌着した伸鉛合金製のキャップ４
を嵌合し、同時成型するもので、上記キャップ４は適宜
厚さを有する外周壁５と底壁６を有し、口部外周が段部
と成り薄肉部７が構成される。A cap 4 made of a drawn lead alloy in which a steel insert 3 having a specified hardness (HRC60) or more is fitted to the axis of the base 2a corresponding to the gun barrel 2 of the needle body 1, which is usually integrally cast with a ready-to-lead alloy.
The cap 4 has an outer circumferential wall 5 and a bottom wall 6 having an appropriate thickness, and the outer periphery of the mouth part forms a stepped part and a thin part 7 is formed.
中心に穿設した嵌合孔８に圧入嵌合するインサート３は
円柱状または係合段部を有する糸巻状に構成され、特に
必要ならば係合段部を有するインサート３の場合はキャ
ップ４の外周から絞り込み、段部に外周壁５の一部を嵌
合し、完全に一体化する。The insert 3 which is press-fitted into the fitting hole 8 drilled in the center has a cylindrical shape or a pincushion shape with an engaging step. It is narrowed down from the outer periphery, and a part of the outer peripheral wall 5 is fitted into the stepped portion to be completely integrated.
上述の如くキャップ４に嵌合され一体化したインサート
３は通常異物体を同時鋳込み鋳造する如く、鋳型（図示
せず）の所定泣面にセットし、該鋳型に岩屑した伸鉛合
金の湯を流し込み、固化後、鋳型から抜出し、種々形状
のモデルガンを得るものである。The insert 3, which is fitted and integrated with the cap 4 as described above, is usually set on a predetermined surface of a mold (not shown) as in the case of simultaneous casting of foreign objects, and the mold is filled with molten metal of elongated lead alloy containing rock chips. is poured into the mold, and after it solidifies, it is pulled out from the mold to obtain model guns of various shapes.
こうして製造された′モデルガンは第２図、第３図の如
き要部断面を有するが、キャップ４が銃本体１と同質材
料である亜鉛合金で構成されているため、鋳造の際キャ
ップ４の外側表面近傍は溶解して第６図に示す如く、完
全に一体化してしまい特に薄肉部７は溶は込んでしまう
。The model gun manufactured in this way has a cross section of the main part as shown in FIGS. 2 and 3, but since the cap 4 is made of zinc alloy, which is the same material as the gun body 1, the cap 4 is The vicinity of the outer surface is melted and completely integrated as shown in FIG. 6, and the thin wall portion 7 in particular is melted.
しかしこの様なキャップ４０的解はインサート３迄には
及ばず、湯熱（４００〜４５０°Ｃ）が直接インサート
３に影響しないため、インサート３が焼きもどされるこ
とがなく、従って初期の硬度を保持することができるも
のである。However, this solution for the cap 40 does not extend to the insert 3, and since the hot water (400-450°C) does not directly affect the insert 3, the insert 3 is not tempered, and therefore the initial hardness is reduced. It is something that can be kept.
したがって、本発明の構成に依ればモデルガンの銃身基
部の所定位置に所定硬度のインサートを確実に埋設する
ことが出来るので、容易に改造することができなくなり
、また本発明の製法に依ればインサートの硬度を規定限
度にて使用するととができるため材料費を低廉化し、生
産コストを引下げることが出来る等その利とするところ
すこぶる大なるものである。Therefore, according to the structure of the present invention, it is possible to reliably embed an insert of a predetermined hardness in a predetermined position at the base of the barrel of a model gun, which prevents easy modification. For example, if the hardness of the insert is kept within a specified limit, the material cost can be reduced, and the production cost can be reduced.
図面は本発明の一実施例を示すもので、第１図はモデル
ガン製造規則に基づく要部断面図、第２図は本発明製法
に基づく要部の構成を示す正断面図、第３図は第２図に
おけるＡ−Ａ線断面図、第４図はキャップおよびインサ
ートの斜視図、第５図は他の実施例を示すキャップおよ
びインサートの正断面図、第６図は成型後の完成時の構
成を示す第２図と同じ断面図である。
１〜銃本体、２〜銃身、３〜ｂインサート、４〜キヤツ
プ、７〜薄肉部、８〜嵌合孔。The drawings show one embodiment of the present invention; FIG. 1 is a cross-sectional view of the main part based on the model gun manufacturing rules, FIG. 2 is a front cross-sectional view showing the configuration of the main part based on the manufacturing method of the present invention, and FIG. is a sectional view taken along line A-A in Fig. 2, Fig. 4 is a perspective view of the cap and insert, Fig. 5 is a front sectional view of the cap and insert showing another embodiment, and Fig. 6 is a completed state after molding. FIG. 2 is the same cross-sectional view as FIG. 1-gun body, 2-barrel, 3-b insert, 4-cap, 7-thin section, 8-fitting hole.
Claims (1)
、（ＨＲＣ６０）規定硬度以上の硬度を有する規定大き
さ及び形状の鋼製インサートを針本体と同質合金の有底
筒状キャップに予め圧入嵌着した後、この一体化部材を
鋳型の銃身基部に設置すると共に、該鋳型に溶解した伸
鉛合金の湯を流ｊ〜込み、埋設して成り、上記インサー
トの焼きもどりを防止することを特徴とするモデルガン
の製法。1. When manufacturing a model gun made of cast light alloy, a steel insert of a specified size and shape with hardness equal to or higher than the specified hardness (HRC60) is placed in advance in a bottomed cylindrical cap made of the same alloy as the needle body. After press-fitting, this integrated member is installed at the base of the gun barrel of a mold, and molten lead alloy is poured into the mold and buried, thereby preventing the insert from tempering. A manufacturing method for model guns featuring the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14671077A JPS5938519B2 (en) | 1977-12-06 | 1977-12-06 | Model gun manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14671077A JPS5938519B2 (en) | 1977-12-06 | 1977-12-06 | Model gun manufacturing method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16382583A Division JPS5973171A (en) | 1983-09-05 | 1983-09-05 | Model gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5479748A JPS5479748A (en) | 1979-06-26 |
| JPS5938519B2 true JPS5938519B2 (en) | 1984-09-17 |
Family
ID=15413780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14671077A Expired JPS5938519B2 (en) | 1977-12-06 | 1977-12-06 | Model gun manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5938519B2 (en) |
-
1977
- 1977-12-06 JP JP14671077A patent/JPS5938519B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5479748A (en) | 1979-06-26 |
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