200918740 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種用於引擎之汽缸本體及一種製造汽缸 本體之方法，在汽缸本體中，汽缸套筒藉由鑄造塗佈被提 供。 【先前技術】 此種類之用於引擎之習知汽缸本體在（例如）專利文獻j 中發現有所描述。專利文獻1中所揭示的汽缸本體之汽缸 、 套筒經形成為使得其在軸向方向上之中心部分與其兩端相 比厚度較大。 此意欲用於在汽缸本體之鑄造過程中防止汽缸套筒因較 大收縮力而變形，收縮力係藉由鋁合金之冷卻而產生。 又，汽缸套筒之一端曝露至汽缸本體之端表面以構成汽 缸本體之與汽缸頭部配合之表面的一部分。以此方式，在 汽虹套筒曝露至配合表面之情況下，配合表面在汽缸本體 之鑄造之後經受切割工作，且配合表面經精整以使得平 土曰 0 [專利文獻 1] JP-A-59-74354 [專利文獻 2] JP-A-10-220278 【發明内容】 [本發明待解決之問題] 需要藉由縮短為在鑄造之後所執行的機械加工所需要之 時間來進-步降低包括專利文獻所揭示之汽缸本體之 一般汽缸本體的製造成本。 131790.doc 200918740 為了縮短為對汽缸太 作所需要的時間，可能^頭部配ί之表面進行工 之配合表面之側上的 π缸套筒’使得其在汽缸套筒 硬之汽紅套筒被切割—之端量比剩Γ分薄，以便減少相對較 時，存在不能藉由壓鱗當一端經形成為較薄 憂。此係由於一端在壓=來執行汽缸本體之鑄造的擔 憂。此外，合藉由i 因熔融金屬之壓力而變形的擔 ^ 他轉造方法（例如，低壓鏤诰太、土斗、 其類似旬來製造汽叙套筒時 -壓，方去或 為了消除此問題，已構 ^ q加° 匕構心出本發明，且本發明且 之汽缸本體的M票’汽缸本體能夠縮短為 間，_ 同時達成成本降低。去來使得製造成為可能之構造的 [解決問題之手段] 為了達到目標，根據本發明的製造用於引擎之汽缸本體 提：二：二壓鑄步驟’其中藉由鑄造塗佈而將汽虹套筒 urn缸本體中.；及切割步驟，其中將與汽缸頭部配合 之表面形成於汽缸本體之—端上，使得曝露汽缸套筒之端 ,面’且方法係藉由以下步驟來進行：形成汽缸套筒之一 端乂使得端與〜缸套筒之剩餘部分相比外徑較小；在鎮 造金屬模具之柱狀部分經裝配至汽缸套筒内的狀態下鑄造 汽缸本體；及在切割步驟中形成汽缸套筒之一端之端表面 以使得端表面平坦，以便構成配合表面之一部分。 在根據請求項2中所描述之本發明的Μ引擎之汽缸本 131790.doc 200918740 體中，汽缸套筒藉由鑄造塗佈被提供’汽缸套筒之-端構 成與汽缸頭部配合之表面的一部分，汽缸本體藉由㈣方 、、在鑄&金屬模具之柱狀部分經裝配至汽知套筒内的狀 態下被鑄造，汽虹套筒之一端經形成以與汽虹套筒之剩餘 部分相比外徑較小，及一端之端表面藉由在•造之後的切 割工作被形成且包含構成配合表面之一部分的平坦表面。 根據叫求項3中所描述之本發明的用於引擎之汽缸本體 13如明求項2之用於引擎之汽缸本體，且藉由鑄造金屬 模具被模製，鑄造金屬模具之閘形成於與汽缸套筒之一端 相對的位置中。 根據請求項4中所描述之本發明的用於引擎之汽缸本體 向如請求項2或3之用於引擎之汽缸本體添加以下特徵：其 在汽缸套筒之軸向兩端皆由鑄造金屬模具所包夾的狀態下 被鱗造。 根據請求項5中所描述之本發明的用於引擎之汽缸本體 向如凊求項2至4中任一項之用於引擎之汽缸本體增加以下 特徵：於該汽缸套筒之外周上’形成有複數個在該汽缸套 筒之軸向方向上間隔開而延著圓周方向延伸之隆脊。 [本發明之效果] 在如請求項1之製造用於引擎之汽缸本體之方法及如請 求項2之用於引擎之汽缸本體的情況下，汽缸套筒之一端 由當壓鑄汽缸本體時裝配至汽缸套筒内的鑄造金屬模具之 柱狀邛刀自内部支撐，使得雖然一端經形成為相對較薄， 但有可能執行壓鑄，同時防止一端變形。 131790.doc 200918740 2 ’有可能形成汽缸套筒之—端，其曝露至汽红本體 ==碩部配合之表面，以使得—端較薄，因此致能為 ^之機械加工所需要的時間。因此，有可能提供製 &成本進一步降低之汽缸本體。 在如請求項3之本發明的情況下，汽知套筒之與閘相對 ::端經形成為厚度較小’使得在不鄰近於閘而形成汽缸 之配口表面以使得配合表面較大的情況下，閘可經形BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder body for an engine and a method of manufacturing a cylinder body in which a cylinder sleeve is provided by casting coating. [Prior Art] A conventional cylinder body for an engine of this kind is described in, for example, Patent Document j. The cylinder and the sleeve of the cylinder body disclosed in Patent Document 1 are formed such that the central portion thereof in the axial direction is thicker than the both ends thereof. This is intended to prevent the cylinder sleeve from being deformed by the large contraction force during the casting process of the cylinder body, and the contraction force is generated by the cooling of the aluminum alloy. Also, one end of the cylinder sleeve is exposed to the end surface of the cylinder body to form a portion of the surface of the cylinder body that mates with the cylinder head. In this way, in the case where the steam siphon sleeve is exposed to the mating surface, the mating surface is subjected to the cutting work after casting of the cylinder body, and the mating surface is finished to make the flat soil 曰 0 [Patent Document 1] JP-A- 59-74354 [Patent Document 2] JP-A-10-220278 [Disclosure of the Invention] [Problems to be Solved by the Invention] It is necessary to further reduce the inclusion by shortening the time required for machining performed after casting. The manufacturing cost of a general cylinder body of a cylinder body disclosed in the patent literature. 131790.doc 200918740 In order to shorten the time required for the cylinder to work too much, it is possible that the surface of the head is matched with the π cylinder sleeve on the side of the mating surface so that it is hard in the cylinder sleeve. The amount of the end to be cut is thinner than the remaining one, so as to reduce the relative time, there is a problem that it cannot be formed by pressing the scale when one end is formed into a thinner one. This is due to the fact that one end is at the pressure = to perform the casting of the cylinder body. In addition, by the method of converting the deformation of the molten metal by the pressure of the molten metal (for example, the low pressure 镂诰 too, the soil bucket, the like is used to manufacture the steam-sleeve sleeve-pressure, or to eliminate this The problem has been constructed by the present invention, and the M-ticket 'cylinder body of the cylinder body of the present invention can be shortened to between, and at the same time, the cost reduction is achieved. The manufacturing is made possible. Means for solving the problem] In order to achieve the goal, the cylinder body for manufacturing an engine according to the present invention is: two: two die casting step 'where the steam siphon sleeve is urn in the cylinder body by casting coating; and a cutting step, wherein Forming a surface cooperating with the cylinder head on the end of the cylinder body such that the end of the cylinder sleeve is exposed, and the method is performed by: forming one end of the cylinder sleeve so that the end and the cylinder liner The remaining portion of the barrel is smaller than the outer diameter; the cylinder body is cast in a state in which the cylindrical portion of the tempered metal mold is assembled into the cylinder sleeve; and the end surface of one end of the cylinder sleeve is formed in the cutting step to The end surface is flat so as to constitute a part of the mating surface. In the cylinder of the Μ engine of the present invention described in claim 2, the cylinder sleeve is provided by the casting coating. The end constitutes a part of the surface that cooperates with the cylinder head, and the cylinder body is cast by the (four) square, in the state in which the cylindrical portion of the casting & metal mold is assembled into the steam-known sleeve, the steam-colored sleeve One end is formed to have a smaller outer diameter than the remainder of the steam siphon sleeve, and the end surface of one end is formed by a cutting operation after fabrication and includes a flat surface constituting a part of the mating surface. The cylinder body 13 for an engine of the present invention described in Item 3 is the cylinder body for an engine of the present invention 2, and is molded by a casting metal mold, and the gate of the casting metal mold is formed in the cylinder sleeve In a position opposite to one end. According to the cylinder body for an engine of the present invention described in claim 4, the following features are added to the cylinder body for the engine as claimed in claim 2 or 3: in the cylinder liner The axial ends of the cylinder are all scaled in a state of being sandwiched by the casting metal mold. According to the invention, the cylinder body for the engine of the present invention is directed to any one of items 2 to 4 The cylinder body for the engine is characterized in that a plurality of ridges are formed on the outer circumference of the cylinder sleeve and spaced apart in the axial direction of the cylinder sleeve to extend in the circumferential direction. [Effects] In the case of manufacturing the cylinder body for an engine as claimed in claim 1 and the cylinder body for the engine of claim 2, one end of the cylinder sleeve is assembled into the cylinder sleeve when the cylinder body is die-cast The cylindrical boring tool of the cast metal mold is internally supported, so that although one end is formed to be relatively thin, it is possible to perform die casting while preventing deformation of one end. 131790.doc 200918740 2 'It is possible to form the end of the cylinder sleeve, Exposure to the vapor red body == the surface of the master part so that the end is thinner, thus enabling the time required for machining. Therefore, it is possible to provide a cylinder body with a further reduction in cost. In the case of the invention as claimed in claim 3, the sleeve of the steam-known sleeve is opposite to the gate: the end is formed to have a smaller thickness so that the surface of the fitting of the cylinder is formed adjacent to the gate so that the mating surface is larger In the case, the gate can be shaped
成以使得適當地寬，且可使得溶融金屬易於自閘流入至命 穴内。 =此，由於可使熔融金屬以高速流入至空穴内，所以有 p鑄k甚至具有大$散熱片之汽缸本體，以便使得汽缸 本體之品質高。 在如請求項4之本發明的情況下，有可能在汽虹套筒由 ,&金屬杈具支撐以便不移動之狀態下執行壓鑄。因此， 4套筒之位置在每次鑄造時不改變，且使得為對紅套筒 進灯工作所需要之量在每次鑄造時值定，使得有可能使得 為對配合表面進行工作所需要之時間始終最短。 月长項5之本發明的情況下，汽缸套筒之隆脊與汽 ―本體之中〜部分嚙合，汽缸本體經鑄造以便包圍汽缸套 筒，使得有可能防止在鑄造汽缸本體之後汽缸套筒自汽缸 本體内脫洛。因Λ ’有可能提供汽缸本體，汽缸套筒牢 固地提供於汽缸本體上。 因此，根據本發明，汽缸套筒與汽缸本體之中心部分相 互接觸之區域的面積增加，從而使得易於將汽缸套筒之熱 131790.doc -10- 200918740 使得有可能提供冷卻本領較高之汽缸本 【實施方式】 以下將參看圖1至圖 1 來洋細地描述藉由根據本發明的製 造用於引擎之汽缸本體 /斤製這的汽紅本體之實施 例0 圖1為展示使用根據本發明之汽叙本體的引擎之-部分 之截面圖，圖2為展示用於根據本發明之汽缸本體之禱造 的鑄造金屬模具之截面圖， _ m且圖3為展不在鑄造之後的汽 缸本體之透視圖。 在此等圖式中，參考數丰〗类丨敬 yt 可数子1表不引擎，其使用根據實施 例之^本體2。引擎1為氣冷型四衝程單汽缸引擎。引擎 1包括：曲軸箱4,其可旋轉地支樓曲軸3,汽缸本體2安裝 至曲軸箱4’·及汽缸頭部5，其安裝至汽缸本體2之尖端。 又’引擎1在汽缸之軸線C被大體上定向至载具本體之前部The formation is suitably wide and allows the molten metal to flow easily into the cavity from the gate. = This, since the molten metal can be made to flow into the cavity at a high speed, there is a p-cast k or even a cylinder body having a large heat sink, so that the quality of the cylinder body is high. In the case of the invention as claimed in claim 4, it is possible to perform die casting in a state where the steam siphon sleeve is supported by & metal cookware so as not to move. Therefore, the position of the 4 sleeves does not change at each casting, and the amount required to operate the red sleeve into the lamp is determined at each casting, making it possible to work for the mating surface. Time is always the shortest. In the case of the invention of the month length item 5, the ridge of the cylinder sleeve is meshed with the portion of the steam body, and the cylinder body is cast to surround the cylinder sleeve, making it possible to prevent the cylinder sleeve from being self-cast after the cylinder body is cast. The cylinder body is detached from the body. Since it is possible to provide the cylinder body, the cylinder sleeve is firmly provided on the cylinder body. Therefore, according to the present invention, the area of the area where the cylinder sleeve and the central portion of the cylinder body contact each other is increased, thereby making it easy to heat the cylinder sleeve 131790.doc -10- 200918740, making it possible to provide a cylinder having a higher cooling power. [Embodiment] Hereinafter, an embodiment of manufacturing a vapor red body for a cylinder body for an engine according to the present invention will be described in detail with reference to FIGS. 1 to 1. FIG. 1 is a view showing use of the present invention. FIG. 2 is a cross-sectional view showing a part of the engine of the cylinder body according to the present invention, and FIG. 3 is a view showing the cylinder body after the casting. perspective. In these figures, the reference number 丨 丨 yt can count the number 1 table engine, which uses the body 2 according to the embodiment. The engine 1 is an air-cooled four-stroke single-cylinder engine. The engine 1 includes a crankcase 4 that rotatably supports a crankshaft 3 that is mounted to a crankcase 4' and a cylinder head 5 that is mounted to a tip end of the cylinder body 2. Further, the engine 1 is oriented substantially at the axis C of the cylinder to the front of the carrier body.
C 轉移至中心部分 體。 的狀態下安裝於機器腳踏車之本體框架（未圖示）上。 藉由麼鑄方法而將汽紅本體2模製為預定形狀，在壓禱 方法中，將銘合金用作材料，且使用稍後描述之鑄造金屬 模具6(見圖2)。如圖1所示，藉由鑄造塗佈而將活塞7所插 入及裝配至之汽缸套筒"提供於汽缸本體2上。 又，汽缸本體2與大量散熱片12(如圖丨所示）且與鏈腔室 13(如圖3所示）整體地形成。鏈腔㈣以在汽虹之轴向方向 上延伸穿過汽缸本體2之側的方式而形成。 另外，用於汽缸本體2之安裝的安裝座14提供於汽缸本 131790.doc 200918740 體2之一端處，如圖1及圖3所示。安裝座14經形成以在最 靠近於汽也:頭部5之位置中自散熱片12以台階而朝向汽缸 頭部5突出’且同與汽红頭部5配合之配合表面1 5 —起形 成。Ά紅套南11之端曝露至配合表面15。 缸套筒11係在其一端11 a曝露至汽缸本體2之配合表面 1 5的狀態下由待經圓柱形地成形且定位於汽缸本體2中之 锖鐵形成。C is transferred to the center part. It is attached to the body frame (not shown) of the bicycle. The vapor red body 2 is molded into a predetermined shape by a casting method in which an alloy is used as a material, and a casting metal mold 6 (see Fig. 2) described later is used. As shown in Fig. 1, a cylinder sleeve into which the piston 7 is inserted and assembled by casting coating is provided on the cylinder body 2. Further, the cylinder body 2 is integrally formed with a plurality of fins 12 (shown in Fig. 且) and with the chain chamber 13 (shown in Fig. 3). The chain cavity (4) is formed in such a manner as to extend through the side of the cylinder body 2 in the axial direction of the steam rainbow. Further, a mount 14 for mounting the cylinder body 2 is provided at one end of the cylinder body 131790.doc 200918740, as shown in Figs. 1 and 3. The mount 14 is formed to protrude from the fin 12 toward the cylinder head 5 in a position closest to the steam: head 5 and to form a mating surface 15 with the steam red head 5 . The end of the blush cover south 11 is exposed to the mating surface 15. The cylinder sleeve 11 is formed of ferroniobium to be cylindrically shaped and positioned in the cylinder body 2 in a state where one end 11a thereof is exposed to the mating surface 15 of the cylinder body 2.
複數個圓周延伸之隆脊16形成於汽缸套筒丨丨之外部周邊 上以在汽缸套筒11之轴向方向（汽缸之軸向方向）上間隔。 此等隆脊16經形成以便不使得在汽缸套筒丨丨之圓周方向上 離散且經嵌入於汽缸本體2之中心部分2a中。 與汽缸套筒11之其他部分（定位於隆脊丨6之間的主要外 部周邊表面）的外徑D2相比，汽缸套筒u之一端Ua的外徑 D1(見圖2)經形成為較小。亦即，與汽缸套筒"之其他部 分相比，一端11a經形成為厚度較小。 藉由在汽缸本體2之鑄造之後的機械加工而使得一端ιι& 之端表面平坦，以便構成與汽缸頭部5配合之配合表面^ 之一部分。藉由使用（例如）銑刀同時切割汽缸套心之端 表面及汽缸本體2之端表面來執行機械加工。藉由使兩個 端表面經受機械加工’與汽缸頭部5配合之配合表面⑽ 成於汽缸本體2上。 為：凹座21，其界定 口 22及排氣口 23，其 頭部5上的為進氣閥 如圖1所示’形成於汽缸頭部5上的 其與活塞7之間的燃燒腔室S ;及進氣 一端打開至凹座21。又，提供於汽虹 13I790.doc 200918740 24、排氣閥25、用於兩個閥24、2 ® , , 勒的榣臂型閥操作 "$ 、類似者。藉由定時鏈（未圖示）而# fig# # 26之凸輪軸27連接至曲心心± )而將_作裝置 神連接至曲軸3。將定時鏈延伸穿過汽虹 之鏈腔至13以連接於凸輪軸27與曲軸3之間。 如圖2所示’藉由使用鑄造金屬模具6而藉由 鑄造汽缸本體2。鑄造金屬模具6包含：靜止金屬MU來 其部5側覆蓋汽缸本體2之方式而形成;移動金 八，，、能夠在朝向及遠離靜止金屬模具31之方向 (圖2之垂直方向）上移動；孔銷33，其經形成以使得為柱狀 以裝配至汽缸套筒U内且安裝至移動金屬模具Μ;及四個 滑動金屬模具34，其以包圍孔銷33之周邊的方式而定位於 靜止金屬模具31與移動金屬模具32之間。孔銷㈣成本發 明中所提及的鑄造金屬模具之柱狀部分。 孔銷33之尖端（圖2之上部端）經形成為紡錘形以隨著其 朝向尖端而逐漸地變細，且面向靜止金屬模具31之流槽h 的内邛（在圖2所示之閉合狀態下）。流槽3 5之上游端連接至 燒（未圖示）。又，A缸套筒Π之朝向曲軸腔室之端表面 所鄰接的台階33a形成於孔銷33之基底端處。 π缸套筒11裝入至金屬模具6之空穴36(見圖2)内（在固定 有孔銷33且由孔銷33之台階33a承載的狀態下）。用於鏈腔 至1 3之模製的核心（未圖示）提供於空穴3 6内鄰近於汽缸套 筒11之位置中。 突出部分37(其將汽缸套筒11***於其與台階33a之間）提 供於靜止金屬模具31之形成有流槽35之下游端之彼端上的 131790.doc 13 200918740 四個位置中。突出部分37經提供以在汽虹㈣丨丨之圓周方 向上在四個位置中以相等間隔被間隔。在圖2所示之閉人 狀態下’突出部分37鄰接汽缸套筒"之一端⑴的端表面 以將其推向另一端。 流槽35之下游端連接至形成於與汽缸套筒丨丨之一端 相對之位置中㈣38。閘38形成於靜止金屬模具3i與孔銷 33之間及四個位置中之突出部分37中的兩個鄰近突出部分 37之間。亦即’如圖3所示，閘38經形成以便使流槽別 之熔融金屬自汽缸套筒11周圍之四個位置被引入至空穴36 内。 圖3展示由熔融金屬形成之模製體〇，熔融金屬在中途 不被切割且被取出鑄造金屬模具6之狀態下在自流槽35至 空穴36之範圍内的整個區域中凝固。由於形成於鑄造金屬 模具6中之流槽35及空穴36的形狀對應於模製體41，所以 針對流槽、閘及空穴之參考數字35、38、36為針對圖3之 模製體41的表示。 四個滑動金屬模具34用以模製汽缸本體2之周邊壁且與 凹座42—起形成，凹座42用以模製散熱片12，如圖2所 示。滑動金屬模具34支撐於移動金屬模具32上，以便能夠 在汽缸套筒11之徑向方向上移動。 隨後，將給出對藉由使用鑄造金屬模具6來製造汽缸本 體2之方法的解釋。 首先’在閉合鑄造金屬模具6之前，將汽缸套筒丨丨裝配 至孔銷33内且由孔銷33之台階33a承載。接著，如圖2所示 131790.doc -14- 200918740 來閉合鑄造金屬模具6。歸因於閉合，將汽缸套筒丨丨插人 於台階33a與靜止金屬模具31之突出部分37之間。 在以此方式來執行閉合之後，根據需要來減小空穴36中 之壓力，且經由閘38而將熔融金屬自流槽35供應至空穴36 内。當熔融金屬自閘38流入至空穴36内時，藉由熔融金屬 - 之壓力而將汽缸套筒11之一端11a徑向地向内推動。 然而’由於孔銷33經裝配於一端11 a内部，所以當如上 文所描述藉由熔融金屬之壓力來推動時，一端Ua由孔鎖 Γ) 33自内部承載’且因此不因壓力而變形。 在熔融金屬凝固之後，自洗口切割流槽35朝向洗口之 端’且使移動金屬模具32、孔銷33及四個滑動金屬模具34 與靜止金屬模具31分離。接著，將滑動金屬模具34移動遠 離孔銷33，且自移動金屬模具32及孔銷33移除模製體41。 如圖3所示，熔融金屬在流槽35中凝固而形成之流槽内 模製體41a及炫融金屬在閘38中凝固而形成之閘内模製體 41 b與產品部分41 c整體地模製以形成模製體41。 'J 為了自模製體41獲得汽缸本體2(產品部分41c)，切割安 裝座14及閘38之邊界部分，且藉由切割工作而將與汽缸頭 -部5配合之配合表面15形成於安裝座14之經切割端表面 上。 由於汽缸套请11之一端1丨a曝露至經切割端表面，所以 田對，工切割端表面進行工作時，同時切割汽缸套筒11之一 端"a。根據實施例的汽缸套筒U之一端na經形成為外徑 比剩餘部分小且經形成為厚度較小。因此，雖然汽缸套筒 131790.doc •15- 200918740A plurality of circumferentially extending ridges 16 are formed on the outer periphery of the cylinder sleeve to be spaced in the axial direction of the cylinder sleeve 11 (the axial direction of the cylinder). These ridges 16 are formed so as not to be discrete in the circumferential direction of the cylinder sleeve and embedded in the central portion 2a of the cylinder body 2. The outer diameter D1 (see FIG. 2) of one end Ua of the cylinder sleeve u is formed to be larger than the outer diameter D2 of the other portion of the cylinder sleeve 11 (the main outer peripheral surface positioned between the ridges 6) small. That is, the one end 11a is formed to have a smaller thickness than the other portions of the cylinder sleeve. The end surface of the one end is flattened by machining after casting of the cylinder body 2 to constitute a part of the mating surface of the cylinder head 5. Machining is performed by simultaneously cutting the end surface of the cylinder sleeve and the end surface of the cylinder body 2 using, for example, a milling cutter. A mating surface (10) that cooperates with the cylinder head 5 by mechanically machining the two end surfaces is formed on the cylinder body 2. It is: a recess 21 defining a port 22 and an exhaust port 23, and on the head 5 is an intake valve as shown in FIG. 1 'a combustion chamber formed between the cylinder head 5 and the piston 7 S; and one end of the intake air opens to the recess 21. Also, it is provided in Qihong 13I790.doc 200918740 24, exhaust valve 25, for the two valves 24, 2 ® , , and the arm-type valve operation "$, similar. The camshaft 27 of # fig# #26 is connected to the crank core ± by a timing chain (not shown) and the device god is connected to the crankshaft 3. A timing chain is extended through the chain chamber 13 of the steam to be coupled between the camshaft 27 and the crankshaft 3. As shown in Fig. 2, the cylinder body 2 is cast by using the casting metal mold 6. The casting metal mold 6 includes: a stationary metal MU formed by covering the cylinder body 2 on the side of the portion 5; and moving the gold octa, moving in a direction toward and away from the stationary metal mold 31 (vertical direction of FIG. 2); a hole pin 33 formed to be cylindrical to fit into the cylinder sleeve U and mounted to the moving metal mold Μ; and four sliding metal molds 34 positioned to stand still in a manner surrounding the periphery of the hole pin 33 The metal mold 31 is moved between the metal mold 31 and the movable metal mold 32. Hole pin (4) The columnar portion of the cast metal mold mentioned in the cost statement. The tip end of the hole pin 33 (the upper end portion of Fig. 2) is formed into a spindle shape to be gradually tapered as it faces the tip end, and faces the inner bore of the flow groove h of the stationary metal mold 31 (closed state shown in Fig. 2) under). The upstream end of the flow cell 35 is connected to the burn (not shown). Further, a step 33a adjacent to the end surface of the cylinder chamber of the A cylinder sleeve is formed at the base end of the hole pin 33. The π-cylinder sleeve 11 is fitted into the cavity 36 (see Fig. 2) of the metal mold 6 (in a state where the hole pin 33 is fixed and carried by the step 33a of the hole pin 33). A core (not shown) for molding the chain cavity to 13 is provided in the position of the cavity 36 adjacent to the cylinder casing 11. The projecting portion 37 (which inserts the cylinder sleeve 11 between it and the step 33a) is provided in four positions of 131790.doc 13 200918740 on the other end of the stationary metal mold 31 where the downstream end of the flow groove 35 is formed. The projecting portion 37 is provided to be spaced at equal intervals in four positions in the circumferential direction of the steam (four) turn. In the closed state shown in Fig. 2, the projecting portion 37 abuts the end surface of one end (1) of the cylinder sleeve to push it toward the other end. The downstream end of the launder 35 is connected to a position (40) 38 formed at a position opposite to one end of the cylinder sleeve. The gate 38 is formed between the stationary metal mold 3i and the hole pin 33 and between the two adjacent protruding portions 37 of the protruding portions 37 in the four positions. That is, as shown in Fig. 3, the gate 38 is formed so that the molten metal of the flow cell is introduced into the cavity 36 from four positions around the cylinder sleeve 11. Fig. 3 shows a molded body formed of molten metal which is solidified in the entire region in the range from the laundering groove 35 to the cavity 36 in a state where the molten metal is not cut in the middle and taken out of the casting metal mold 6. Since the shapes of the flow grooves 35 and the holes 36 formed in the casting mold 6 correspond to the molded body 41, the reference numerals 35, 38, and 36 for the flow grooves, gates, and cavities are molded bodies for FIG. The representation of 41. Four sliding metal molds 34 are used to mold the peripheral wall of the cylinder body 2 and are formed together with the recess 42 for molding the heat sink 12, as shown in FIG. The slide metal mold 34 is supported on the moving metal mold 32 so as to be movable in the radial direction of the cylinder sleeve 11. Subsequently, an explanation will be given of a method of manufacturing the cylinder body 2 by using the casting metal mold 6. First, the cylinder sleeve 丨丨 is fitted into the hole pin 33 and carried by the step 33a of the hole pin 33 before the casting of the metal mold 6 is closed. Next, the casting metal mold 6 is closed as shown in Fig. 2, 131790.doc -14-200918740. Due to the closing, the cylinder sleeve is inserted between the step 33a and the protruding portion 37 of the stationary metal mold 31. After the closing is performed in this manner, the pressure in the cavity 36 is reduced as needed, and the molten metal is supplied from the launder 35 into the cavity 36 via the gate 38. When molten metal flows from the gate 38 into the cavity 36, one end 11a of the cylinder sleeve 11 is pushed radially inward by the pressure of the molten metal. However, since the hole pin 33 is fitted inside the one end 11a, when pushed by the pressure of the molten metal as described above, the one end Ua is carried by the hole lock 33 from the inside and thus is not deformed by the pressure. After the molten metal solidifies, the self-washing cutting groove 35 is directed toward the end of the washing port and the moving metal mold 32, the hole pin 33, and the four sliding metal molds 34 are separated from the stationary metal mold 31. Next, the slide metal mold 34 is moved away from the hole pin 33, and the molded body 41 is removed from the moving metal mold 32 and the hole pin 33. As shown in FIG. 3, the in-slot molding body 41a in which the molten metal is solidified in the launder 35 and the in-sector molded body 41b formed by solidification of the molten metal in the gate 38 are integrally formed with the product portion 41c. Molded to form the molded body 41. 'J is for obtaining the cylinder body 2 (product portion 41c) from the molded body 41, cutting the boundary portion of the mount 14 and the brake 38, and forming the mating surface 15 mated with the cylinder head portion 5 by the cutting work. The cut end surface of the seat 14. Since one end of the cylinder liner 11 is exposed to the surface of the cut end, when working on the surface of the cutting end, one end of the cylinder sleeve 11 is cut at the same time. One end na of the cylinder sleeve U according to the embodiment is formed such that the outer diameter is smaller than the remaining portion and formed to be smaller in thickness. Therefore, although the cylinder sleeve 131790.doc •15- 200918740
1係由硬度相對較高之鑄鐵形成，但可在相對較短之 内執行經切割端表面之切割工作。 · B 以此方式’包含平坦表面之配合表面⑽成於安裝座】4 上’藉以汽缸本體2之製造過程終止。The 1 series is formed of cast iron having a relatively high hardness, but the cutting work of the cut end surface can be performed in a relatively short period. · B In this way, the mating surface (10) containing the flat surface is formed on the mount 4 by the manufacturing process of the cylinder body 2.
因2，在根據實施例之汽缸本體2及其製造方法的情況 下’汽紅套筒11之-端Ua由在a鑄時裝配至汽叙套筒11 内之孔銷33自内部支擇’使得雖然一端⑴經形成為相對 較薄，但有可能執行壓鑄，同時防止一端變形。 因此’可藉由形成汽缸套筒n之一端lla來縮短為配合 表面15之機械加工所需要的時間，一端ua曝露至汽缸本 體2與汽缸頭部5之間的配合表面。，以使得―端山 薄。 根據實施例，由於汽缸套筒丨丨之與鑄造金屬模具6之閘 38相對的一端lla經形成為較薄，所以可在不將安裝座μ 形成為較大之情況下形成閘38以使得適當地寬，且可使得 熔融金屬易於自閘38流入至空穴36内。 因此，由於可使熔融金屬以高速流入至空穴36内，所以 有可能鑄造甚至具有大量散熱片12之汽缸本體2，以便使 得汽缸本體2之品質高。 根據實施例，有可能在汽缸套筒丨丨由靜止金屬模具31及 孔銷33支撐以便不移動之狀態下執行壓鑄。因此，汽缸套 筒11之位置在母次鑄造時不改變，且使得為對汽缸套筒Η 進行工作所需要之量在每次鎮造時恒定，使得有可能使得 為配合表面1 5之工作所需要的時間始終最短。 131790.doc -16- 200918740 根據實施例，汽缸套筒11之隆脊16與汽虹本體2之中心 部分2a嚙合，汽缸本體2經鑄造以便包圍汽缸套筒i丨，使 得有可能防止在鑄造汽缸本體2之後汽缸套筒丨丨自汽缸本 體2内部脫落。 又，根據實施例，汽缸套筒11與汽缸本體2之中心部分 2a相互接觸之區域的面積增加，從而使得易於將汽缸套筒 11之熱轉移至中心部分2a。因此，有可能在冷卻本領方面 改良引擎1。 (' 此外，雖然已關於本發明適用於氣冷型引擎之汽缸本體 的實例而描述實施例，但本發明可適用於水冷型引擎之汽 缸本體及多汽缸引擎之汽缸本體。 【圖式簡單說明】 [圖1 ]圖1為展示使用根據本發明之汽缸本體的引擎之一 部分之截面圖。 [圖2]圖2為展示用於根據本發明之汽缸本體之鑄造的鑄 造金屬模具之截面圖。2, in the case of the cylinder body 2 and the method of manufacturing the same according to the embodiment, the end Ua of the steam red sleeve 11 is internally determined by the hole pin 33 assembled into the steam sleeve 11 at the time of a casting. Even though one end (1) is formed to be relatively thin, it is possible to perform die casting while preventing deformation of one end. Therefore, the time required for the machining of the mating surface 15 can be shortened by forming one end 11a of the cylinder sleeve n, and the one end ua is exposed to the mating surface between the cylinder body 2 and the cylinder head 5. So that the end of the mountain is thin. According to the embodiment, since the one end 11a of the cylinder sleeve opposite to the gate 38 of the casting mold 6 is formed to be thin, the gate 38 can be formed without forming the mount μ to be large so as to be appropriate The ground is wide and allows molten metal to readily flow from the gate 38 into the cavity 36. Therefore, since the molten metal can be made to flow into the cavity 36 at a high speed, it is possible to cast the cylinder body 2 even having a large number of fins 12, so that the quality of the cylinder body 2 is high. According to the embodiment, it is possible to perform die casting in a state where the cylinder sleeve is supported by the stationary metal mold 31 and the hole pin 33 so as not to move. Therefore, the position of the cylinder sleeve 11 does not change during the mother casting, and the amount required to operate the cylinder sleeve 恒定 is constant at each tempering, making it possible to work with the surface 15 The time required is always the shortest. 131790.doc -16- 200918740 According to an embodiment, the ridge 16 of the cylinder sleeve 11 meshes with the central portion 2a of the vapor-blue body 2, and the cylinder body 2 is cast to surround the cylinder sleeve i, making it possible to prevent the casting cylinder After the body 2, the cylinder sleeve is detached from the inside of the cylinder body 2. Further, according to the embodiment, the area of the region where the cylinder sleeve 11 and the central portion 2a of the cylinder body 2 are in contact with each other is increased, thereby making it easy to transfer the heat of the cylinder sleeve 11 to the center portion 2a. Therefore, it is possible to improve the engine 1 in terms of cooling power. (' Further, although the embodiment has been described with respect to the example in which the present invention is applied to the cylinder body of the air-cooled engine, the present invention is applicable to the cylinder body of the water-cooled engine and the cylinder body of the multi-cylinder engine. Fig. 1 is a cross-sectional view showing a portion of an engine using a cylinder body according to the present invention. [Fig. 2] Fig. 2 is a cross-sectional view showing a casting metal mold for casting of a cylinder body according to the present invention.
U 3]圖3為展示在鑄造之後的汽缸本體之透視圖。 【主要元件符號說明】 2 5 6 11 11a 14 汽缸本體 汽缸頭部 鑄造金屬模具 汽缸套筒 一端 安裝座 131790.doc 200918740 15 配合表面 31 靜止金屬模具 32 移動金屬模具 33 孔銷 34 滑動金屬模具 35 流槽 38 閘 131790.doc -18-U 3] Figure 3 is a perspective view showing the cylinder body after casting. [Main component symbol description] 2 5 6 11 11a 14 Cylinder body cylinder head casting metal mold cylinder sleeve one end mount 131790.doc 200918740 15 mating surface 31 stationary metal mold 32 moving metal mold 33 hole pin 34 sliding metal mold 35 flow Slot 38 Gate 131790.doc -18-