經濟部中央標準局員工消費合作社印製 522079 A7 B7 五、發明説明（1 ) 發明背景 本發明爲有關於一種具有硏磨刀刃之多重切割砂輪組 件，特別是爲有關於一種具有鑲鑽硏磨刀刃之多重切割砂 輪組件。更特別地，本發明爲有關於一種多重切割砂輪組 件，每個砂輪的外周緣具有鑲有例如鑽石微粒的硏磨微粒 之刀刃，而且以與相鄰切割砂輪保持適當間距的方式被同 軸地固定在單一軸上，以用來在單程切割工作中將例如一 以稀土金屬爲底材之合金的燒結磁鐵之一種堅硬易碎材質 的單一底材塊狀物切割成複數的機械切割片。 在製造大量的例如相同尺寸以稀土金屬爲底材的燒結 磁鐵元件的工業製程中，有一選擇爲該些磁鐵元件是在粉 末治金的程序中被一個一個的製造，該程序包括將粉末模 塑成粉末壓胚而且燒結該壓胚或是用粉末冶金方法製作成 大塊磁鐵後當該燒結磁鐵是具有各向異性磁性時接著斟酌 磁鐵的易磁化軸使用合適的切割工具將其切成薄片。 在藉著以一單元粉末冶金程序製造單一產品而重複該 程序以一個個製造出磁鐵片的先前製程中，該製程唯一的 要求是該單元程序所製得的該單一產品是可接受的而且該 程序能以高生產力確保良好的重現性，使得燒結元件的機 械加工可以是相對地簡單容易，然而這樣的個別製程並不 適用於製造小磁鐵片或是在磁化方向厚度小的磁鐵片，因 爲相對於平面尺寸小片的變形或薄片的扭曲是不可避免地 非常大，有時因此無法獲得任何可接受產品。這些問題在 後來的大磁鐵塊機製程序中不再那麼重要，於其中用於粉 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁) J衣. 訂 -4- 522079 A7 B7 五、發明説明（2 ) 末模塑和燒結步驟的製程控制能相對地容易的進行，由於 其高產能和優良變化性使得這個製程是目前製造稀土磁鐵 的主流製程。另方面，此製程中重要處在於獲自燒結的大 燒結磁鐵塊的機械加工步驟能有著盡可能高的尺寸精確性 以及盡可能低的材料損耗。 經濟部中央標準局員工消費合作社印製 (請先閲讀背面之注意事項再填寫本頁) 爲此目的，最廣爲採用的切割工具是內刃式或外刃式 的硏磨刀刃之切割砂輪。內刃式的硏磨刀刃之切割砂輪採 用硏磨微粒刀刃，是一種組合自，在環形基輪的內緣上面 及沿著內緣具備硏磨微粒的切割刀刃的細薄環形基輪的整 合體。如圖ΙΑ，1B和1C所示，外刃式切割砂輪是一 個由薄碟1當作基輪，帶有旋轉軸開口 5，以及具備硏磨 微粒在基輪1外緣的上面與沿著外緣的切割刀刃2，所組 合而成的整體6。近幾年的趨勢爲，外刃式切割砂輪較內 刃式的切割砂輪受到歡迎。外刃式切割砂輪因具多重切割 工作產能，故仍較佔優勢，如圖2 A和2 B分別以透視及 一軸向剖視圖說明所示，當多個這種切割砂輪6同軸組合 在單一軸1 0上，以間隔件3介於每個相鄰切割砂輪6中 間，能夠經由一個單次切割操作即可製造出多個磁鐵片。 當工件材質是以稀土金屬爲底材的燒結磁鐵合金時，上述 的硏磨微粒較佳爲是鑽石或是立方氮化硼的微粒。硏磨微 粒被黏合或黏合在一起以在基輪1外緣形成切割刀刃2， 該黏合的方法有利用樹脂黏合劑的樹脂黏合法，還有利用 金屬膠合劑的金屬膠合法，或是在硏磨微粒表面上形成一 個金屬電鍍層的電澱積法，其中以樹脂黏合的切割刀刃較 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） 522079 A7 五、發明説明（3 ) 適合切割以稀土金屬爲底材的磁鐵或特別是，稀土金屬-鐵-硼合金的燒結磁鐵等高硬度材質。這是因爲樹脂黏合 硏磨刀刃的支撐強度較弱，由於與金屬黏合劑比較起來， 樹脂黏合劑的低彈性係數在工件和硏磨微粒間確保柔性接 觸狀況，並且確保持續良好的切割品質。在金屬膠合硏磨 微粒的切割砂輪上，即是，由於金屬膠合劑的高機械強度 和高彈性模數使得切割刀刃層的微粒固持強度和耐磨度能 夠達到很高，同時這些優點伴隨著切割刀刃硏磨表面極易 變鈍、呈現增高的切割抗力的缺點，使得金屬膠合硏磨微 粒刀刃仍被用在切割稀土金屬-鐵-硼合金的燒結磁鐵塊 上，但不是那麼普遍被使用。 經濟部中央標準局員工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 在使用如圖2 A和2 B所示的多重切割砂輪組件進行 大型稀土磁鐵塊多重切割，以單一切割製程切割或切片獲 得複數磁鐵片時，除了切割操作的精準性外，一個値得考 慮的最重要因素是，硏磨刀刃砂輪的厚度以及經燒結的稀 土磁鐵的材料耗損之間的關係，因爲較大厚度的硏磨砂輪 不可避免的會導致切割的材料耗損增加以及磁鐵片產品數 量減少，而致產能減低和生產成本的增加。 當硏磨切割刀刃2的厚度有必要減小以減低磁鐵材料 耗損時，當然基輪1的厚度必須越小越好，而基輪1的厚 度限制又取決於其材質。以低成本和高機械強度觀點來看 ，傳統硏磨砂輪的基輪材質，幾乎獨限在指定於J I S ( 日本工業標準）包括SK，SKD，SKT和SKH的合 金工具鋼。然而，當一個用鋼製的硏磨刀切割砂輪使用在 本纸張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -6 - 522079 A7 B7 五、發明説明（4 ) 例如經燒結的稀土磁鐵等非常堅硬材質切割工作上時，基 輪的機械強度仍舊不足，因此仍舊碰到諸如切割砂輪變形 和扭曲的問題，進而影響切割或切片磁鐵片的尺寸精確性 〇 此外，當硏磨切割砂輪基輪厚度減小時，會遇到一個 嚴重的問題。如圖1 C 一個硏磨切割刀刃2附著在基輪1 外緣的.放大的軸向橫截面所示，通常硏磨刀刃的厚度t 2 要大於基輪1的厚度，這樣當硏磨刀刃2切入工件時，一 個通常介於0 · 01到0 . 2毫米厚度t 3稱爲”無切割 區（escape) ”的間隙在切割時會產生在基輪1表面和工件 之間。這個無切割區充當從基輪1表面來的切割灰塵微粒 的排出通道，厚度t 3越增大越可以使碎屑排出順暢，但 厚度t 3又應越小越好以便減少因切割工作引起的材料耗 損。 經濟部中央標準局員工消費合作社印製 (請先閲讀背面之注意事項再填寫本頁) 換句話說，使用低厚度t1基輪1作成的切割砂輪遇 到的困難是硏磨刀刃厚度t 2以及無切割區厚度t 3不夠 大，無法確保順暢排出切割屑及從刀刃2掉下的硏磨微粒 ，因此基輪1的表面被堵塞在無切割區的細縫中的微粒嚴 重刮傷及損害。這個問題在加工以稀土金屬爲底材的經燒 結磁鐵塊工件時特別嚴重，因爲一個經燒結的稀土磁鐵具 有和先前技藝之傳統使用的非常易碎的硏磨刀刃之切割砂 輪基輪材料的合金工具鋼一樣或更高的硬度，導致在基輪 1表面的嚴重刮傷。一旦基輪1的表面有了硏磨刮傷及局 部形成的變形，基輪1就失去介於兩個表面的應力平衡， 本纸張尺度適用中國國家標準（CNS ) A4規格（2】0X 297公釐） 522079 A7 B7 五、發明説明（5 ) 導致基輪1發生類似歪曲和起伏的變形。這個缺點在基輪 1的厚度變更小時，變得更嚴重，甚至非常小的刮傷也會 導致大變形或起伏。任何在基輪1的小變形都會因進一步 切割操作應力帶來的影響，而進一步擴大基輪1的彎曲及 起伏，因而大幅減低切割或切片工件的精確度。 當使用呈現在圖2 A和2 B的多重切割砂輪組件進行 切割工作時，同軸支撐在旋轉軸1 0的複數的硏磨刀刃之 切割砂輪6，是靠間隔件3保持相鄰的砂輪6彼此之間的 距離的，更詳細言之，因爲切割工作物厚度的尺寸單獨決 定於兩個相鄰切割砂輪之間的距離，因此除非將介於切割 砂輪6間距或，換句話說，間隔件3的厚度常常作調整， 否則基輪1上任何輕微歪曲或變形將直接影響切割時產品 的尺寸精確度，導致大幅降低切割工作的生產力或不當增 加切割時的材料耗損。 發明摘要 經濟部中央標準局員工消費合作社印製 (請先閲讀背面之注意事項再填寫本頁) 因此本發明的目的之一在於提供一種新穎的多重切割 砂輪組件，其沒有以上描述之相似類型的先前技藝裝備裡 發生的問題及缺點。 因此，本發明提供的具有硏磨刀刃之多重切割砂輪組 件包括： (A ) —支供旋轉的軸； (B )至少兩個硏磨刀刃之切割砂輪，每個砂輪由具 有中間開口供插入旋轉軸的基輪以及一黏附在基輪外周緣 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ~ 一一·' 522079 A7 . B7 . · 五、發明説明（6 ) 的硏磨刀刃層組成，其中基輪的直徑不超過2 0 0毫米， 厚度範圍從0 · 1到1毫米，每個切割砂輪被固定於插入 基輪內中央開口的旋轉軸上；以及 (C )至少一個間隔件，間隔件的數目比切割砂輪的 數目少一，每個間隔件具有一個中央開口供插入旋轉軸及 藉由將該軸在介於兩個硏磨刀刃之切割砂輪之間以定義其 間間距的位置插入該中央開口而將間隔件固定在旋轉軸上 j 而硏磨刀刃之切割砂輪的基輪是由一超硬合金（ cemented metal carbide)製成，而且該硏磨刀刃之切割砂 輪的硏磨刀刃層是由一硏磨材料的微粒與一黏合劑黏合而 製成。 特別的是，由超硬合金作成的基輪應有楊格模數從 45000到70000kg f/mm2範圍內，或是，應 具有維克斯硬度Hv從9 0 0到2 0 0 0範圍內的硬度。 經濟部中央標準局員工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 進一步的，刀刃上的硏磨微粒較佳爲是由平均粒徑在 5 0到2 5 0 //m範圍內的鑽石微粒、立方氮化硼微粒或 者兩者的混合組合而成，其中在刀刃上硏磨微粒的體積比 例最好介於1 0到5 0 %之間，其餘爲黏合劑。 圖示的簡要描述 圖1 A是發明組件之中的單一硏磨刀刃之切割砂輪的 平面圖，圖1 B是在圖1 A中切割砂輪的軸向橫截面圖而 圖1 C是圖1 B的放大圖，其顯示在基輪外緣的硏磨切割 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 522079 A7 B7 五、發明説明（7 ) 刀刃層。 圖2 A是一個具備五片切割砂輪的具有硏磨刀刃之多重切 割砂輪組件的透視圖。 圖2 B是一個具備七片切割砂輪的具有硏磨刀刃之多 重切割砂輪組件的軸向橫截面圖。 圖3是一個將實施例1和比較的實施例1加以比較而 顯示切割厚度的精確度和切割片數量的相關性的圖示。 圖4是一個將實施例3和比較的實施例4加以比較而 顯示切割厚度的精確度和切割片數量的函數相關。 主要元件對照表 1 薄碟 2 切割刀刃 3 間隔件 5 旋轉軸開口 6 整體 6 切割砂輪 經濟部中央標準局員工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 10 單一軸 較佳具體實施例的詳細描述 根據本發明之上文定義的具有複數硏磨刀刃之切割砂 輪組件具有以下幾個非常重要的或選擇性的特點。 (1 )組成組件的外刃式切割砂輪的基輪，是由具有 楊格模數從45000到7 0〇〇〇kg f/mm2範圍內 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公楚） 522079 Α7 Β7 五、發明説明（8 ) ，或是，具有維克斯硬度Hv在從9 0 0到2 0 0 0範圍 內的超硬合金作成的。 (2)基輪厚度爲介於0·1到1毫米範圍以及外徑 不超過200毫米。 (3 )該組件至少有兩個，或最好，至少三個硏磨刀 刃之切割砂輪以及，相應地，至少一個間隔件夾在兩個相 鄰的切割砂輪之間以界定兩者間的間距。切割砂輪的數目 可以多到2 0 0個。 (4)在硏磨刀刃層中的硏磨微粒較佳爲是由平均粒 徑在5 0到2 5 0 範圍內的鑽石微粒或是立方氮化硼 微粒或者兩者的混合組合而成，其中在硏磨刀刃層中硏磨 微粒的體積比例爲介於1 0到5 0 %之間，其餘爲黏合劑 〇 (5 )硏磨刀刃層厚度要比基輪厚度大〇 . 〇 2到 0·4毫米，以便在基輪的每個邊留出〇.〇1到〇.2 毫米的無切割區。 經濟部中央榡準局員工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 圖ΙΑ，1B和1B依次各是本發明組件的部份單一 硏磨刀刃之切割砂輪的硏磨刀刃層的平面圖、軸向橫截面 圖及放大的部份軸向橫截面圖。 本發明組件最具特色的特徵是，每個組成硏磨刀刃之 切割砂輪6的基輪1是以特定的楊格模數或特定的維克斯 硬度H v之硬度的超硬合金作成。超硬合金是一種本質堅 硬強韌的材料其本身被用來製作切割刀刃的材料。事實上 ’僅由超硬合金作成的切割砂輪，被廣泛使用來在不同的 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X 297公釐） » 11 - 522079 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明（9 ) 材料包含木質的和石質的材料、纖維材料、塑膠和香煙過 濾材的切割工作上。在本發明的切割砂輪組件件上，每個 切割砂輪6是一個複合體，由用超硬合金作成的基輪1和 一在基輪1外緣上形成硏磨刀刃層2所構成，其中硏磨刀 刃層2是由例如鑽石微粒和立方氮化硼等硏磨材料用黏合 劑黏合一起的硏磨材料微粒作成，因此多重切割砂輪組件 甚至能被用來切割或切削一例如以稀土金屬爲底的合金的 燒結金屬塊的極端高硬度材料供製作永久磁鐵。 當一例如以稀土金屬爲底的磁鐵合金的高硬度材料用 基輪外周緣邊緣裝有硏磨刀刃的切割砂輪切割或者切片時 ’一個影響切割工作最重要的因素是基輪的材質。基於這 個理解，本案發明人已經對於選擇硏磨刀刃的切割砂輪的 基輪材料，做了廣泛的硏究，這種材料沒有基輪在切割過 程發生的強大壓力下彎曲或者起伏的缺點，因於獲得一料 想不到的發現，就是藉由使用利用超硬合金作成的基輪組 成的硏磨刀刃的切割砂輪，能夠獲得十分令人滿意的結果 ，雖則超硬合金的硬度一般低於大多數像氧化鋁的陶磁材 料。陶瓷作的基輪不能被用於切割砂輪，由於易碎的陶磁 材料容易導致極端的危險，因爲一陶瓷製基輪在切割像經 燒結的以稀土金屬爲底的磁鐵的堅硬工作物時，甚至在受 到一小小的沖擊力量時，也會輕易地破碎和壞掉。 超硬合金是一種燒結體，經由燒結一些組成自屬於化 學元素周期表上IVa ，Va或VIA族，像碳化鎢WC 、碳化鈦T i C、碳化鉬Μ 〇 C、碳化鈮N b C、碳化鉅 本纸張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） (請先閲讀背面之注意事項再填寫本頁) 装· -12- 522079 經濟部中央標準局負工消費合作社印製 A7 B7五、發明説明（10 ) T a C和碳化鉻C r 3 C 2的金屬碳化物的微粒以及一些類 似鐵、鈷、鎳、鉬、銅、鉛和錫的金屬或金屬合金的微粒 的粉末混合物以促成金屬碳化物微粒和充當基質相的金屬 或合金的燒結。特別合適的超硬合金的例子，包括那些碳 化鎢微粒與鈷黏合，碳化鎢-碳化鈦混合微粒與鈷黏合， 碳化鎢-碳化鈦-碳化鉅混合微粒與鈷黏合，然而不特別 限定此。 重要的是，以超硬合金作成的基輪1具備楊格模數介 於從450 0 0到7000 0 kg f/mm2範圍，或者， 具備維克斯硬度Hv從9 0 0到2 0 0 0範圍內。當基輪 1的楊格模數太低時，基輪1將因爲接受自使用多重切割 砂輪組件進行切割工作的阻力，發生彎曲和起伏，因而損 失獲得自因使用超硬合金而減少基輪厚度的好處。另一方 面，當基輪的楊格模數超過上述上限時，這麼高的楊格模 數必然增加其脆度，因此基輪可能在切割中分解破裂而導 致極大危險。當基輪的維克斯硬度太低時，基輪可能因爲 堵塞在基輪表面和加工工件之間的間隙中的切割灰塵微粒 ，而被刮傷或毀壞，這些可能致使基輪進一步彎齒和起伏 現象的微粒，其硬度可能相當或有時高於基輪的硬度。基 輪的維克斯硬度超過上述上限時，有時將使材料強度減低 ，如此將遇到和使用不適當偏高的楊格模數基輪相似的麻 煩。 組合本發明的多重切割砂輪組件的硏磨刀刃之切割砂 輪6的數目可從2到2 0 0或者，較佳爲是從3到2 0〇 0slh —til — - Γ —- j I - - 1 ii 士 i - - - i I - 1 * (請先閱讀背面之注意事項再填寫本頁) 訂 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） - 13- 經濟部中央標準局員工消費合作社印製 522079 A7 ____ 、 B7 五、發明説明（彳1 ) 。從僅由兩片切割砂輪組成的組件得到的優點是相對地小 的。當切割砂輪6的數目過多時，該多重切割砂輪組件將 過重，導致組裝處理上的困難。和切割砂輪6 —起以交互 順序安裝固定在同一軸心1 0的間隔件3的數目，是介於 從2到1 9 9的範圍中，因爲每個間隔件3夾在二切割砂 輪6之間，然而可選擇的是，如圖2 A和2 B所示在切割 砂輪組件最外位置的切割砂輪 6是夾在雨個間隔件3的 中間，因此間隔件3的數目要比那切割砂輪6大1。 每個切割砂輪6的硏磨刀刃層2，是使用一黏合劑黏 合像鑽石和立方氮化硼等微粒而形成的。黏合硏磨微粒的 方法並未被特別限定，其包括樹脂黏合、金屬黏合、玻化 黏合和電沉積黏合等等依黏合材料而決定。由於用超硬合 金作成的基輪1的高硬度的優點，甚至在不同的硏磨微粒 黏合方法中展現出最大的切割阻力的用金屬黏合作成的硏 磨刀刃層，在切割堅硬的工作物工作上仍能確保一高準確 性的切割。一般而言金屬黏合的硏磨刀刃層比樹脂黏合的 硏磨刀刃層，較爲有利地具有較高耐磨性因而所製得的硏 磨刀刃之切割砂輪具有較長耐久性，使得本發明的多重切 割砂輪組件可用在切割工作上，而不需將組件解體成個別 的切割砂輪以便調整或者替換刀刃，非常有助於切割工作 生產力的改進。 含在硏磨刀刃層2中的硏磨微粒並不限定於鑽石微粒 ，而可以是立方氮化硼或者鑽石和立方體氮化硼微粒的組 合。包含在該硏磨刀刃層2的硏磨微粒子的體積比率’是 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐) (請先閲讀背面之注意事項再填寫本頁)Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 522079 A7 B7 V. Description of the Invention (1) Background of the Invention The present invention relates to a multi-cutting grinding wheel assembly with a honing blade, in particular to a honing blade with a diamond Multi-cutting wheel assembly. More specifically, the present invention relates to a multi-cutting grinding wheel assembly, each of which has a cutting edge of honing particles inlaid with diamond particles, and is coaxially fixed in a manner to maintain a proper distance from the adjacent cutting wheels. On a single shaft, a single substrate block of a hard and fragile material, such as a sintered magnet of an alloy with a rare earth metal as a substrate, is cut into a plurality of mechanical cutting pieces in a single pass cutting operation. In the industrial process of manufacturing a large number of sintered magnet elements with a rare earth metal as a substrate of the same size, for example, there is a choice that the magnet elements are manufactured one by one in a powder metallurgy process, which includes molding powder After the powder compact is formed and the compact is sintered or made into a bulk magnet by powder metallurgy, when the sintered magnet has anisotropic magnetism, the easy magnetization axis of the magnet is then considered and cut into thin slices using a suitable cutting tool. In the previous process of manufacturing a single piece by repeating the process by manufacturing a single product with a unit powder metallurgy process, the only requirement for the process was that the single product produced by the unit process was acceptable and the The program can ensure good reproducibility with high productivity, so that the machining of sintered components can be relatively simple and easy. However, such an individual process is not suitable for manufacturing small magnet pieces or magnet pieces with a small thickness in the magnetization direction because Deformation or distortion of the flakes relative to the plane size is inevitably very large, and sometimes it is not possible to obtain any acceptable product. These issues are not so important in the subsequent large magnet block mechanism procedures, and the Chinese paper standard (CNS) A4 (210X297 mm) is used for the paper size of the powder. (Please read the precautions on the back before filling this page ) J. Order -4- 522079 A7 B7 5. Description of the invention (2) The process control of the final molding and sintering steps can be performed relatively easily. Due to its high capacity and excellent variability, this process is currently the production of rare earth magnets Mainstream process. On the other hand, what is important in this process is that the machining steps obtained from the sintered large sintered magnet block can have the highest possible dimensional accuracy and the lowest possible material loss. Printed by the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page). For this purpose, the most widely used cutting tool is a cutting wheel with an internal or external honing blade. Internal cutting type honing blade cutting wheel adopts honing particle blade, which is a combination of a thin annular base wheel with a cutting edge with honing particles on the inner edge of the annular base wheel and along the inner edge. . As shown in Figures IA, 1B, and 1C, the outer-edged cutting wheel is a thin disc 1 as the base wheel, with a rotating shaft opening 5, and has honing particles on the outer edge of the base wheel 1 and along the outer side. The cutting edge 2 of the edge, the combined whole 6. In recent years, the trend is that outer-edged cutting wheels are more popular than inner-edged cutting wheels. Outer-edged cutting wheels still have an advantage due to their multiple cutting productivity. As shown in Figures 2A and 2B, respectively, in perspective and an axial sectional view, when multiple such cutting wheels 6 are coaxially combined in a single axis On 10, a spacer 3 is interposed between each adjacent cutting wheel 6, and a plurality of magnet pieces can be manufactured through a single cutting operation. When the material of the workpiece is a sintered magnet alloy with a rare earth metal as a substrate, the above-mentioned honing particles are preferably diamond or cubic boron nitride particles. The honing particles are bonded or bonded together to form a cutting blade 2 on the outer edge of the base wheel 1. The bonding method is a resin bonding method using a resin adhesive, a metal bonding method using a metal adhesive, or Electrodeposition method of forming a metal plating layer on the surface of the abrasive particles. The resin-bonded cutting blade is applicable to the Chinese national standard (CNS) A4 specification (210X 297 mm) 522079 A7 than the paper size. 5. Description of the invention (3) Suitable for cutting magnets with rare earth metals as substrates, especially sintered magnets with rare earth metals-iron-boron alloys, etc. This is because the resin-bonded honing blade has a weaker support strength. Compared with metal adhesives, the low elastic modulus of resin adhesives ensures a flexible contact between the workpiece and the honing particles, and ensures continuous good cutting quality. On the cutting wheel for metal-bonded honing particles, that is, due to the high mechanical strength and high elastic modulus of the metal cement, the particle holding strength and wear resistance of the cutting blade layer can be very high, and these advantages are accompanied by cutting The blade honing surface is extremely blunt and exhibits the disadvantages of increased cutting resistance, so that metal-bonded honing particle blades are still used for cutting rare earth metal-iron-boron alloy sintered magnet blocks, but they are not so commonly used. Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling this page). Use the multiple cutting wheel assembly shown in Figures 2A and 2B to perform multiple cutting of large rare-earth magnet blocks in a single cut. In the process of cutting or slicing to obtain multiple magnet pieces, in addition to the accuracy of the cutting operation, the most important factor to consider is the relationship between the thickness of the honing blade grinding wheel and the material loss of the sintered rare earth magnet, because Large thickness honing wheels will inevitably lead to increased material consumption for cutting and reduction in the number of magnet sheet products, resulting in reduced production capacity and increased production costs. When it is necessary to reduce the thickness of the honing cutting blade 2 to reduce the wear of the magnet material, of course, the thickness of the base wheel 1 must be as small as possible, and the thickness limitation of the base wheel 1 depends on its material. From the viewpoint of low cost and high mechanical strength, the base wheel materials of traditional honing wheels are almost exclusively limited to alloy tool steels designated by JIS (Japanese Industrial Standard) including SK, SKD, SKT and SKH. However, when a steel honing knife cutting wheel is used in this paper size, the Chinese National Standard (CNS) A4 specification (210X 297 mm) -6-522079 A7 B7 V. Description of the invention (4) For example, after sintering When cutting very hard materials such as rare earth magnets, the mechanical strength of the base wheel is still insufficient, so it still encounters problems such as cutting wheel deformation and distortion, which affects the dimensional accuracy of the cutting or slicing magnet pieces. In addition, when honing A severe problem is encountered when the thickness of the cutting wheel base wheel is reduced. As shown in Figure 1C, a honing cutting blade 2 is attached to the outer edge of the base wheel 1. As shown in the enlarged axial cross-section, the thickness t 2 of the honing blade is generally greater than the thickness of the base wheel 1, so when the honing blade 2 When cutting into a workpiece, a gap, usually between 0.01 mm and 0.2 mm thickness t3, called "escape" is created between the surface of the base wheel 1 and the workpiece during cutting. This non-cutting area serves as a discharge path for cutting dust particles from the surface of the base wheel 1. The larger the thickness t 3 is, the smoother the debris can be discharged, but the smaller the thickness t 3 is, the better it is to reduce the material caused by the cutting work. Attrition. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page). In other words, the difficulty encountered with cutting wheels made with a low thickness t1 base wheel 1 is the honing blade thickness t 2 and The thickness t 3 of the non-cutting area is not large enough to ensure smooth discharge of cutting chips and honing particles falling from the cutting edge 2, so the surface of the base wheel 1 is seriously scratched and damaged by the particles clogged in the fine seams of the non-cutting area. This problem is especially serious when processing sintered magnet block workpieces with rare earth metal as the substrate, because a sintered rare earth magnet has an alloy that cuts the wheel base material of the very fragile honing blade traditionally used in the prior art. The hardness of the tool steel or higher causes severe scratches on the surface of the base wheel 1. Once the surface of the base wheel 1 has honing scratches and localized deformation, the base wheel 1 loses the stress balance between the two surfaces. This paper size applies the Chinese National Standard (CNS) A4 specification (2) 0X 297 (Mm) 522079 A7 B7 V. Description of the invention (5) Causes the base wheel 1 to have similar distortions and undulations. This disadvantage becomes more serious when the thickness of the base wheel 1 is changed, and even very small scratches can cause large deformations or undulations. Any small deformation on the base wheel 1 will be affected by the further cutting operation stress, which will further increase the bending and undulation of the base wheel 1, thereby greatly reducing the accuracy of cutting or slicing the workpiece. When the multiple cutting wheel assembly shown in FIGS. 2A and 2B is used for cutting work, the cutting wheels 6 with a plurality of honing blades coaxially supported on the rotating shaft 10 are held by the spacer 3 to keep adjacent wheels 6 from each other. The distance between them, in more detail, because the size of the cutting work thickness is independently determined by the distance between two adjacent cutting wheels, so unless the distance between the cutting wheels 6 or, in other words, the spacer 3 The thickness is often adjusted, otherwise any slight distortion or deformation on the base wheel 1 will directly affect the dimensional accuracy of the product during cutting, resulting in a significant reduction in cutting productivity or an improper increase in material consumption during cutting. Summary of the Invention Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page). One of the objects of the present invention is to provide a novel multi-cut grinding wheel assembly, which does not have the similar type as described above. Problems and shortcomings in previous technical equipment. Therefore, the multi-cutting grinding wheel assembly with a honing blade provided by the present invention includes: (A)-a shaft for rotation; (B) at least two honing blades for cutting wheels, each of which has an intermediate opening for insertion and rotation The base wheel of the shaft and a paper adhered to the outer periphery of the base wheel. The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) ~ 111 · 522079 A7. B7. · 5. Honing of the description of the invention (6) The blade layer consists of a base wheel with a diameter of not more than 200 mm and a thickness ranging from 0.1 to 1 mm. Each cutting wheel is fixed on a rotating shaft inserted into the central opening in the base wheel; and (C) at least one Spacers, the number of spacers is one less than the number of cutting wheels, each spacer has a central opening for inserting a rotating shaft and defining the distance between the shaft by cutting the wheel between two honing blades Insert the central opening to fix the spacer on the rotating shaft. The base wheel of the honing blade cutting wheel is made of cemented metal carbide, and the honing blade cutting sand The honing blade layer of the wheel is made of particles of a honing material and an adhesive. In particular, the base wheel made of super-hard alloy should have a Young's modulus in the range of 45,000 to 70,000 kg f / mm2, or a hardness in the range of Vickers hardness Hv from 900 to 2000. Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page). Further, the honing particles on the blade are preferably from 50 to 2 5 0 // m Diamond particles, cubic boron nitride particles, or a combination of the two are in the range. The volume ratio of the honing particles on the blade is preferably between 10 and 50%, and the rest is a binder. Brief description of the drawings FIG. 1A is a plan view of a cutting wheel with a single honing blade among the components of the invention, FIG. 1B is an axial cross-sectional view of the cutting wheel in FIG. 1A and FIG. 1C is a view of FIG. 1B Enlarged image showing honing and cutting on the outer edge of the base wheel. The paper size is in accordance with Chinese National Standard (CNS) A4 (210X297 mm) 522079 A7 B7 5. Description of the invention (7) Blade layer. Figure 2A is a perspective view of a multiple cutting wheel assembly with a honing blade having five cutting wheels. Fig. 2B is an axial cross-sectional view of a multi-cutting grinding wheel assembly with a honing blade having seven cutting wheels. Fig. 3 is a graph showing a comparison between Example 1 and Comparative Example 1 to show the correlation between the accuracy of the cutting thickness and the number of cutting pieces. Fig. 4 is a comparison of Example 3 and Comparative Example 4 to show the accuracy of the cutting thickness as a function of the number of cutting pieces. Main component comparison table 1 Thin disc 2 Cutting blade 3 Spacer 5 Rotary shaft opening 6 Overall 6 Cutting wheel printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page) 10 Single axis is better Detailed description of specific embodiments The cutting wheel assembly with a plurality of honing blades as defined above according to the present invention has the following very important or selective features. (1) The base wheel of the outer-edged cutting grinding wheel that composes the component is made up of Younger's modulus from 45000 to 70000 kg f / mm2. This paper size is applicable to Chinese National Standard (CNS) A4 specification (210X297). ) 522079 Α7 Β7 5. Description of the invention (8), or a super-hard alloy with a Vickers hardness Hv in the range from 900 to 2000. (2) The thickness of the base wheel is in the range of 0.1 to 1 mm and the outer diameter does not exceed 200 mm. (3) the assembly has at least two, or preferably, at least three honing blade cutting wheels and, correspondingly, at least one spacer is sandwiched between two adjacent cutting wheels to define the distance between the two . The number of cutting wheels can be as high as 200. (4) The honing particles in the honing blade layer are preferably made of diamond particles or cubic boron nitride particles or a combination of the two, with an average particle size in the range of 50 to 250. The volume ratio of the honing particles in the honing blade layer is between 10 and 50%, and the rest is a binder. (5) The thickness of the honing blade layer is larger than the thickness of the base wheel. 〇2 至 0 · 4 mm so that there is no cutting zone of 0.001 to 0.2 mm on each side of the base wheel. Printed by the Consumer Cooperatives of the Central Government Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page) Figure IA, 1B and 1B are the honing blades of the cutting wheel of a single honing blade of the component of the invention in turn Layer plan view, axial cross-section view and enlarged partial axial cross-section view. The most characteristic feature of the assembly of the present invention is that the base wheel 1 of each of the cutting wheels 6 constituting the honing blade is made of a super hard alloy with a specific Young's modulus or a specific Vickers hardness Hv. Cemented carbide is a material that is inherently hard and tough and is itself used to make cutting edges. In fact, 'cutting wheels made only of cemented carbide are widely used to apply the Chinese National Standard (CNS) A4 specification (210X 297 mm) in different paper sizes »11-522079 Staff Consumer Cooperatives, Central Standards Bureau, Ministry of Economic Affairs Printing A7 B7 V. Description of the invention (9) Materials include wood and stone materials, fiber materials, plastics and cutting materials for cigarette filters. In the cutting wheel assembly of the present invention, each cutting wheel 6 is a composite body, which is composed of a base wheel 1 made of superhard alloy and a honing blade layer 2 formed on the outer edge of the base wheel 1, wherein: The sharpening blade layer 2 is made of honing material particles such as diamond particles and cubic boron nitride, which are bonded together with an adhesive, so the multi-cutting grinding wheel assembly can even be used to cut or cut a substrate such as a rare earth metal. Extremely high hardness materials of alloyed sintered metal blocks are used to make permanent magnets. When a high-hardness material such as a rare earth metal-based magnet alloy is used for cutting or slicing with a cutting wheel equipped with a honing blade on the outer peripheral edge of the base wheel, one of the most important factors affecting the cutting work is the material of the base wheel. Based on this understanding, the inventors of this case have made extensive research on the selection of the base wheel material of the cutting wheel for honing blades. This material does not have the disadvantage of the base wheel being bent or undulated under the strong pressure that occurs during the cutting process. An unexpected discovery was obtained by using a cutting wheel with a honing blade composed of a base wheel made of cemented carbide, which can obtain very satisfactory results, although the hardness of cemented carbide is generally lower than that of most oxides. Ceramic magnetic material of aluminum. Ceramic base wheels cannot be used to cut grinding wheels. Fragile ceramic magnetic materials can easily lead to extreme danger, because a ceramic base wheel cuts hard work like sintered rare earth metal-based magnets, even It is also easily broken and broken when subjected to a small impact force. Cemented carbide is a kind of sintered body. Some components belong to group IVa, Va or VIA on the periodic table by sintering, such as tungsten carbide WC, titanium carbide TiC, molybdenum carbide OC, niobium carbide NbC, carbide The jumbo size of paper is applicable to China National Standard (CNS) A4 specification (210X 297 mm) (Please read the precautions on the back before filling this page). -12- 522079 Printed by the Central Standards Bureau, Ministry of Economic Affairs, Consumer Cooperatives A7 B7 V. Description of the invention (10) Particles of metal carbides of T a C and chromium carbide C r 3 C 2 and particles of some metals or metal alloys similar to iron, cobalt, nickel, molybdenum, copper, lead and tin A powder mixture to promote sintering of metal carbide particles and metals or alloys that serve as a matrix phase. Examples of particularly suitable super-hard alloys include those in which tungsten carbide particles are bonded to cobalt, tungsten carbide-titanium carbide mixed particles are bonded to cobalt, and tungsten carbide-titanium carbide-carbide giant mixed particles are bonded to cobalt, but are not particularly limited thereto. It is important that the base wheel 1 made of cemented carbide has a Young's modulus ranging from 450,000 to 70000 kg f / mm2, or a Vickers hardness Hv ranging from 9 0 to 2 0 0 0 . When the Young's modulus of the base wheel 1 is too low, the base wheel 1 will bend and undulate because of resistance to cutting work using the multi-cutting grinding wheel assembly, thus losing the benefit of reducing the thickness of the base wheel due to the use of superhard alloys . On the other hand, when the Younger's modulus of the base wheel exceeds the above-mentioned upper limit, such a high Younger's modulus will inevitably increase its brittleness, so the base wheel may decompose and break during cutting, resulting in great danger. When the Vickers hardness of the base wheel is too low, the base wheel may be scratched or damaged due to cutting dust particles clogged in the gap between the surface of the base wheel and the workpiece, which may cause the base wheel to further bend its teeth and The hardness of the undulating particles may be comparable or sometimes higher than that of the base wheel. When the Vickers hardness of the base wheel exceeds the above-mentioned upper limit, the strength of the material will sometimes be reduced, so that it will encounter the same troubles as using an inappropriately high Younger modulus base wheel. The number of the cutting wheels 6 of the honing blade combined with the multiple cutting wheel assembly of the present invention may be from 2 to 2000 or, preferably, from 3 to 200000slh —til —-Γ —- j I--1 ii person i---i I-1 * (Please read the notes on the back before filling in this page) The size of the paper is applicable to the Chinese National Standard (CNS) A4 (210X 297 mm)-13- Central Standard of the Ministry of Economic Affairs 522079 A7 ____ and B7 printed by the Bureau ’s Consumer Cooperatives V. Invention Description (彳 1). The advantages derived from an assembly consisting of only two cutting wheels are relatively small. When the number of the cutting wheels 6 is excessive, the multiple cutting wheel assembly will be excessively heavy, resulting in difficulties in assembly processing. The number of spacers 3 mounted on the same axis 10 in an alternating sequence with the cutting wheel 6 is in the range from 2 to 199, because each spacer 3 is sandwiched between the two cutting wheels 6 However, optionally, as shown in FIGS. 2A and 2B, the cutting wheels 6 at the outermost position of the cutting wheel assembly are sandwiched between the rain spacers 3, so the number of the spacers 3 is greater than that of the cutting wheels. 6 big 1. The honing blade layer 2 of each cutting wheel 6 is formed by using a binder to bond particles such as diamond and cubic boron nitride. The method of bonding the honing particles is not particularly limited, and it includes resin bonding, metal bonding, vitrification bonding, electrodeposition bonding, etc. depending on the bonding material. Due to the advantages of the high hardness of the base wheel 1 made of super-hard alloy, the honing blade layer formed by metal bonding, which shows the largest cutting resistance in different honing particle bonding methods, works on cutting hard work. It still ensures a high-accuracy cutting. Generally speaking, the metal-bonded honing blade layer has a higher abrasion resistance than the resin-bonded honing blade layer. Therefore, the cutting wheel of the honing blade produced has a longer durability, which makes the present invention The multi-cutting grinding wheel assembly can be used for cutting work, without the need to disassemble the assembly into individual cutting wheels to adjust or replace the blade, which is very helpful to improve the productivity of cutting work. The honing particles contained in the honing blade layer 2 are not limited to diamond particles, but may be cubic boron nitride or a combination of diamond and cubic boron nitride particles. The volume ratio of the honing fine particles included in the honing blade layer 2 ’is This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling this page)
、1T -14 - 522079 A7 B7 五、發明説明（12 ) 影響本發明組件的切割砂輪的效能的一重要因素。換言之 ，硏磨刀刃層2中的硏磨粒子的體積比率是介於1〇%到 5 0%的範圍中。當硏磨刀刃層2中的硏磨微粒的體積比 率太低時，由於真正用來切割的硏磨微粒的數目較小，切 割砂輪不能展現出全部切割效能，因此切割工作的效率由 於切割比率降低而不當地降低。另一方面，當硏磨刀刃層 2中的硏磨微粒子的體積比率太高時，硏磨微粒可能因爲 黏合硏磨微粒的黏合劑的缺乏而從刀刃落下，特別是，當 在切割像經燒結的稀土磁鐵的高堅硬工作物時。 經濟部中央標準局員工消費合作社印製 包含在硏磨刀刃層中的硏磨微粒的粒子大小，對於本 發明的多重切割砂輪組件的效率也是有重要的影響。根據 相關的廣泛調查結果，硏磨微粒的平均粒徑應在5 0 //m 到2 5 0 //m範圍內。當硏磨微粒的平均粒徑太小時，因 爲在刀刃表面的硏磨微粒的突出高度太小，使得硏磨刀刃 層表面非常容易被切割灰塵堵塞，因此切割工作效率大幅 減低。另一方面，當硏磨微粒太粗時，硏磨刀刃層表面必 然粗糙，以致經由切割而成的工件也越粗糙，隨後需要的 精細拋光處理以及硏磨刀刃1厚度問題，進而縱然使用具 有非常窄小寬度的基輪，切割砂輪的厚度也不能如要求般 的小。 至於硏磨刀刃層2的厚度t 2 (參考圖1C)，經發 現該硏磨刀刃層2的厚度t 2是應該比介於0 · 1到1毫 米厚度的基輪1的厚度t 1大0 · 02到0 · 4毫米，因 而在基輪1每邊的無切割區的厚度t 3在0 · 0 1到 -1?S - (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210:< 297公釐） 522079 A7 B7 經濟部中央標準局員工消費合作社印製 五、發明説明（13 ) 0 · 2毫米範圍內。當無切割區的厚度t 3太小時，該些 切割灰塵微粒極易阻塞在基輪1和切割的工件表面之間， 以致輕微刮傷基輪，干擾進一步切割工作。當太大的硏磨 刀刃層2的厚度t 2造成無切割區的厚度t 3太大時，雖 然免除切割灰塵微粒阻塞阻塞問題，但也增加了切割工件 時材料的損失。 不用說，在基輪1上任何的小的彎曲或者起伏將不利 地影響到切割或者切片一個工件所獲得產品的尺寸準確性 ，因而增加切割時的材料損失。當基輪厚度變小以及直徑 變大時，基輪彎曲或者起伏情形的發生將更頻仍且擴大， 導致準備工作更加的困難。在這一點上，本發明組件中以 超硬合金製成的基輪比別的以傳統材料製成的切割砂輪的 基輪要更爲有利。經由詳細硏究基輪應有的厚度和直徑的 結果，歸結到的結論爲基輪應該外徑不超過2 0 0毫米以 及厚度在0 · 1毫米到1毫米範圍內，如此一來，一個具 有良好尺寸精確度以及沒有彎曲或起伏的問題的基輪能夠 被製得而且有良好的重製性。一個具有外徑超過2 0 0毫 米的基輪或者一個厚度小於0·1毫米即使其外徑不超過 2 0 0毫米的基輪，也一樣會發生大的彎曲變形，即使其 是以超硬合金製造而成也不例外。一個具有超過1毫米厚 度，也可能以傳統合金工具鋼製造而成的基輪，當切割工 作是以不符合本發明要件的大厚度基輪組合而成的複數切 割砂輪處理時，將會有材料損失太大的缺點。不待諱言’ 一個外徑超過2 0 0毫米的基輪，由於太昂貴而不適用於 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） (請先閲讀背面之注意事項再填寫本頁) 装· 訂 ·« -16 - 522079 A7 __B7 五、發明説明（彳4 ) 實際的應用，而一個厚度比〇 · 1小的基輪又極易在切割 工作過程中破碎或斷裂。 (請先閱讀背面之注意事項再填寫本頁) 硏磨刀刃之多重切割砂輪組件當然對於切割或者切片 任何堅硬的和易碎的材料是有用的，但是特別有利於使用 於經燒結的以稀土金屬爲底的合金的永久磁鐵切割的加工 生產，或更特定言之，適合於含有重量比例從5到4 0% 的稀土金屬或金屬、從50到90%的鐵和從0.2到8 %的硼的稀土-鐵-硼類型磁鐵，爲了進一步改進磁鐵的 磁性和抗蝕性選擇性地磁鐵可以被加入有限量的一或多種 包含碳，鋁，矽，鈦，釩，鉻，錳，鈷，鎳，銅，鋅，鎵 ，鉻，鈮，鉬，銀，錫，給，和鎢·的元素。盡管鈷的總 重量能夠大到3 0%，這些額外加入的元素按全部的合金 成份重量計算總數通常不超過8%，因爲過於多量的額外 加入的元素有減少磁鐵磁性的反效果。 經濟部中央標準局員工消費合作社印製 上述的經燒結的稀土-鐵-硼磁鐵合金的永久磁鐵， 能依照傳統粉冶金學的程序製成，於其中個別的元素按照 特定的重量比例融入熔化合金之中後，該熔融物被鑄成合 金錠塊，該錠塊被細細地粉碎成平均粒徑1到2 0 // m的 微粒，該合金粉末在磁場中被壓模成壓胚體（green body) ’最後合金粉末的壓胚體先在溫度爲攝氏1 〇 〇 〇到 1 2 0 0度中燒結和老化0 · 5到5小時，然後在溫度爲 攝氏4 0 0到1 0 0 0度中作燒結和老化的熱處理。 以上根據本發明描述的硏磨刀刃之多重切割砂輪組件 ，是一個由複數基輪組合而成的外刃切割砂輪’每個基輪 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -17- 經濟部中央標準局員工消費合作社印製 522079 A7 ___B7 五、發明説明（15 ) 以合乎楊格模數45000到70000kgf/mm2或 維克斯硬度Hv 900到2000，或是同時滿足此兩 項參數並成型爲環形的碟片，其可以被有利的使用於切割 或切片例如經燒結的以稀土金屬爲底的永久磁鐵等堅硬且 易碎材料，且儘管基輪厚度相對的窄小仍能兼顧穩定的切 割精確與耐久性，因而有助於節省切割工作的成本，以及 改進生產力同時顯著的減低切割的材料損耗。 接下來，以實施例和比較實施例更詳細的描述本發明 的硏磨刀刃之多重切割砂輪組件，然而，本發明絕不僅僅 局限於該些實施例的範圍中。 實施例 1 一種超硬合金由具有楊格模數6 2 0 0 0 k g f/ mm2、按重量計算9 0%的碳化鎢和1 0%的鈷組成後， 成型爲具有外徑1 1 5毫米、內徑4 0毫米和厚度的 0 · 4mm環形的磁碟，作成一個具有硏磨刀刃之切割砂 輪的基輪。一種鑽石微粒的硏磨刀刃層是以下列方式用樹 脂黏合方法形成在基輪的外緣上且環繞該外緣。於是，基 輪被置於金屬模子中，而在基輪周圍的間距空間，塡入體 積比2 5%的平均粒徑1 5 0 的鑽石微粒和體積比 7 5 %熱可固化的酚醛樹脂的微粒混合的硏磨摻合劑，接 著被壓成具有硏磨刀刃的切割砂輪的形狀，且在原處以攝 氏1 8 0度固化酚醛樹脂2小時。冷卻之後，切割砂輪被 拿出金屬模子及在硏磨機器上磨光，以獲得具有0 · 5毫 本纸張尺度適用中國國家標準·（ CNS ) A4規格（210Χ29?公釐） (請先閱讀背面之注意事項再填寫本頁) 装· -18- 522079 A7 B7 五、發明説明（16 ) 米厚度的一種硏磨刀刃層。二個切割砂輪用以上描述的方 式製備好。 具有硏磨刀刃之切割砂輪被裝在直徑4 0 mm的軸心 上，用一個厚度1 β 6毫米的間隔件以保持1 · 6毫米間 隔以裝配成一個外徑8 〇mm、內徑4 〇mm的具有雙刀 刃之切割砂輪組件。此具有雙刀刃之切割砂輪組件被用來 以5 0 0 0 r pm的旋轉速率將一銨一鐵一硼的永久磁鐵 合金的燒結金屬塊當作工件進行切割測試。切割速率是 1 2毫米/分，而切割區域爲寬度4 0毫米和深度1 5毫 米，以便在每個切割操作中作出一個具有目標厚度 1 · 50毫米以及控制界限士 0 · 05毫米的磁鐵板材。 切割工作依照以上描述的方式被進行1 〇 〇次操作， 而得自每十次切割操作的磁鐵碟厚度尺寸，被用一個外分 厘卡在磁鐵碟的大約中心點測量而得，其結果呈現在圖3 的多邊形線I ，其中多邊形線I左邊的資料表示在第一次 切割操作中獲得的產品。 經濟部中央標準局員工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 從此圖可以了解到，得自這個切割測試的每個磁鐵板 材厚度都剛好介於目標的控制界限內，不需要調整任何的 間隔件厚度。 比較實施例 1 實驗的程序實質上與實施例1 一樣，除了每個切割砂 輪中用的超硬合金作的基輪，被替換成相同的尺度的 S K D等級的傳統合金工具鋼作成的基輪。磁鐵板材的厚 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -19- 522079 A7 B7 五、發明説明（17 ) 度測量結果由圖3多邊形的線I I表示。當量出的厚度落 在控制界限外面時，間隔件厚度在第1 〇次、第5 0次和 第9 0次操作後被分別的調整增加1 〇 〇 v um、增加 100/zm 和減少 50//m。 實施例 2 . 另一種超硬合金由具有楊格模數5 5 0 〇 〇 kg f/ mm2、按重量計算由8 5%的碳化鎢和1 5%的鈷組成， 被成型爲具有外徑1 2 5毫米、內徑4 0毫米和厚度 0 · 5mm的環形的磁碟，以作成一個具有硏磨刀刃之切 割砂輪的基輪。一種體積比2 0%平均粒徑1 2 0 的 鑽石微粒和體積比8 0%熱可固化的酚醛樹脂的微粒混合 的硏磨摻合劑被用來在基輪外緣上及周圍形成一鑽石微粒 的硏磨刀刃層以製成一種厚度〇·6毫米的具有硏磨刀刃 之切割砂輪。三十一片有硏磨刀刃之切割砂輪被依照上述 的方式準備好。 經濟部中央標準局貝工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 依此方式準備好的具有硏磨刀刃之切割砂輪，在一個 40毫米直徑軸心上，以1·1毫米厚、外徑80毫米、 內徑4 0毫米的間隔件插人毗鄰的砂輪，裝配成一個具有 3 1片刀刃之切割砂輪組件。 依此準備好的多重切割砂輪組件被用來以6 0 0 0 r p m的旋轉速率將一 5 0 X 3 0 X 2 0毫米尺寸的鈸一 鐵-硼的經燒結的以稀土金屬爲底的磁鐵塊當作工件進行 切割測試，切割方向垂直於5 0毫米長的邊而切割速率是 本紙張尺度適用中國國家標準（CNS ) Λ4規格（210X 297公釐） -20- 522079 A7 _____B7 五、發明説明（18 ) 1 5毫米/分，以便在每個切割操作中切割出3 〇片面積 爲3 0毫米X 2 0毫米具有目標厚度1 β 〇毫米以及控制 界限± 0 · 0 5毫米的磁鐵板材。此切割操作測試被反複 在1000塊工件上，以生產30000片磁鐵板材，每 片在大約中心點的厚度被測量，以發現這樣製造出的磁鐵 板材在1 · 0±0 · 〇 5控制界限之內，不需要調整任何 間隔件厚度和替換切割砂輪。該切割的材料產率是6 〇 % 〇 比較的實施例 2 實驗的程序實質上與實施例2 —樣，除了切割砂輪中 用的超硬合金作的基輪，被替換成相同的尺度的SKD等 級的傳統合金工具鋼作成的基輪。 經濟部中央標準局貝工消費合作社印^ L ——.-----•:装一I (請先閲讀背面之注意事項再填寫本頁) 該切割操作測試的結果是，該些3 0 0 0 0片磁鐵板 材的需求厚度，需要靠總計1 1 8次的間隔件厚度調整及 替換新準備好的切割砂輪2 7次•，才能被控制在界限之內 ，其中，當使用間隔件夾層的砂輪切割的磁鐵片厚度不在 控制界限內時，就實施間隔件厚度調整，而當使用3次間 隔件厚度調整在同一個切割砂輪上，仍不能確保磁鐵片厚 度在控制界限內時，就替換切割砂輪。該切割的材料產率 是6〇％。 比較實施例 3 本實驗程序實質上與比較實施例2 —致，除了每個 本纸張尺度適用中國國家標率（CNS ) Α4規格（210X297公釐〉 -21 - 522079 A7 B7 五、發明説明（19 ) (請先閲讀背面之注意事項再填寫本頁) SKH鋼基輪的厚度是〇 · 9毫米，以及具有硏磨刀刃之 切割砂輪的硏磨刀刃層厚度是1·〇毫米。爲配合增厚的 切割砂輪，多重切割砂輪組件被組合成2 5片切割刀刃， 代替原先的3 1片，如此在單一的切割操作中能獲得2 4 片磁鐵片。 該切割測試的結果是，24000片磁鐵片的需要厚 度，只能靠總計1 5次的間隔件厚度調整及替換新準備好 的切割砂輪2次，才能被控制在界限之內。該切割的材料 產率是 48%。 實施例 3 一種超硬合金由具有楊格模數5 0 0 0 0 k g f/ mm2、按重量計算由8 0%的碳化鎢和2 0%的鈷組成， 被成型爲具有外徑1 0 0毫米、內徑4 0毫米和厚度 0 · 3mm的環形的磁碟，以作成一個具有硏磨刀刃之切 割砂輪的基輪。一個硏磨微粒的硏磨刀刃層，是以重量計 算1 : 1比率的平均粒徑10 0 //m的人工鑽石微粒和立 經濟部中央標準局員工消費合作社印製 方氮化硼微粒，依照以下金屬黏合方法被形成在基輪的外 緣上及周圍。於是’基輪被置於金屬模子中’而在基輪周 圍的間距空間內，塡入體積1 5%的硏磨微粒和體積8 5 %的黏合金屬微粒混合而成的硏磨摻合劑，接著被壓成具 有硏磨刀刃之切割砂輪形狀，且置於攝氏7 0 0度鍛燒2 小時。冷卻之後，切割砂輪被拿出金屬模子及在硏光機上 磨光，使每片硏磨刀刃有〇 · 4毫米的厚度。二片切割砂 本紙張尺度適用中國國家標準（CNS ) Α4ί見格（21〇X297公釐） 522079 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明（2〇 ) 輪用上面描述的方式被準備好。 一項經燒結的稀土金屬磁鐵塊的切割測試，依照與實 施例1相同的方式，使用上面準備好的兩個裝配在直徑 4 0毫米的軸上，中間帶有外徑7 5毫米、內徑4 0毫米 和厚度2 · 1毫米的一個間隔件的切割砂輪構成的雙刃切 割砂輪組件進行。該切割砂輪組件以5 5 0 0 r p m的轉 速旋轉，切割磁塊的速率是8毫米/分在一個5 0毫米X 1 0毫米的切割區域上。切割目標厚度是2 . 0毫米而控 制界限在±0·05毫米之內。如圖4的多邊形線瓜所示 ，5 0 0片磁鐵片進行的切割測試結果是很令人滿意的， 其中一直到5 0 0次切割操作從每2 0次操作取樣的磁鐵 片厚度，不需要經過任何間隔件厚度調整，都能保持在控 制範圍內。標繪在多邊形線in左端的數據，表示在第一次 切割操作所得的磁鐵片。 比較實施例 4 本實驗程序實質上與上述實施例3 —致，除了每個切 割砂輪配備由S KH高速鋼作成的同尺度基輪，取代原先 的超硬合金。該切割操作測試的結果是，在重複切割操作 3 0次後，以每次增加5 0 // m間隔件厚度的調整是必要 的，以便確保磁鐵片的厚度在控制範圍內。切割測試不能 繼續超過2 4 0次操作，因爲產品的切割阻力不適當的增 加以及無法控制的厚度偏離，如圖4多邊形線I V所示。 本紙張尺度適用中國國家標準（CNS ) A4規格（21〇X：297公釐） L--·-----# ^ (請先閱讀背面之注意事項再填寫本頁)1T -14-522079 A7 B7 V. Description of the invention (12) An important factor affecting the performance of the cutting wheel of the component of the present invention. In other words, the volume ratio of the honing particles in the honing blade layer 2 is in the range of 10% to 50%. When the volume ratio of the honing particles in the honing blade layer 2 is too low, because the number of honing particles that are actually used for cutting is small, the cutting wheel cannot show the full cutting efficiency, so the efficiency of the cutting work is reduced due to the cutting ratio Improperly lowered. On the other hand, when the volume ratio of the honing fine particles in the honing blade layer 2 is too high, the honing fine particles may fall from the blade due to the lack of a binder that binds the honing fine particles, especially when the cut image is sintered. Rare earth magnets when working with high rigidity. The particle size of the honing particles contained in the honing blade layer printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs also has an important influence on the efficiency of the multi-cutting wheel assembly of the present invention. According to the results of extensive investigations, the average particle size of the honing particles should be in the range of 5 0 // m to 2 5 0 // m. When the average particle size of the honing particles is too small, since the protruding height of the honing particles on the blade surface is too small, the surface of the honing blade layer is easily blocked by cutting dust, so the cutting work efficiency is greatly reduced. On the other hand, when the honing particles are too coarse, the surface of the honing blade layer must be rough, so that the workpiece after cutting is also rougher. The subsequent fine polishing treatment and the thickness of the honing blade 1 are required. The thickness of the narrow base wheel and cutting wheel cannot be as small as required. As for the thickness t 2 of the honing blade layer 2 (refer to FIG. 1C), it has been found that the thickness t 2 of the honing blade layer 2 should be larger than the thickness t 1 of the base wheel 1 with a thickness of 0 · 1 to 1 mm. · 02 to 0 · 4 mm, so the thickness t 3 of the non-cutting area on each side of the base wheel 1 is 0 · 0 1 to -1? S-(Please read the precautions on the back before filling this page) Applicable to China National Standard (CNS) A4 specification (210: < 297 mm) 522079 A7 B7 Printed by the Consumers' Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs V. Invention Description (13) Within 0.2 mm. When the thickness t 3 of the non-cutting area is too small, the cutting dust particles are easily blocked between the base wheel 1 and the surface of the workpiece to be cut, so that the base wheel is slightly scratched and interferes with further cutting work. When the thickness t 2 of the honing blade layer 2 causes the thickness t 3 of the non-cutting area to be too large, although the problem of cutting dust particles blocking and blocking is avoided, the material loss when cutting the workpiece is also increased. Needless to say, any small bends or undulations on the base wheel 1 will adversely affect the dimensional accuracy of the product obtained by cutting or slicing a workpiece, thereby increasing the material loss during cutting. When the thickness of the base wheel becomes smaller and the diameter becomes larger, the occurrence of bending or undulation of the base wheel will be more frequent and enlarged, resulting in more difficult preparation work. In this regard, the base wheel made of cemented carbide in the assembly of the present invention is more advantageous than other base wheels of cutting wheels made of conventional materials. After studying the thickness and diameter of the base wheel in detail, the conclusion is that the outer diameter of the base wheel should not exceed 200 mm and the thickness should be in the range of 0.1 mm to 1 mm. The base wheels with good dimensional accuracy and no problems of bending or undulation can be made and have good reproducibility. A base wheel with an outer diameter of more than 200 mm or a base wheel with a thickness of less than 0.1 mm, even if its outer diameter does not exceed 200 mm, will undergo large bending deformation, even if it is a super-hard alloy Manufactured is no exception. A base wheel with a thickness of more than 1 millimeter, which may also be made of traditional alloy tool steel, will have materials when the cutting work is processed with a plurality of cutting wheels combined with a large thickness base wheel that does not meet the requirements of the present invention. The disadvantage of too much loss. Don't say anything 'A base wheel with an outside diameter of more than 200 mm is too expensive to be suitable for this paper. The Chinese National Standard (CNS) A4 size (210X 297 mm) is applicable (please read the precautions on the back before filling out (This page) Binding · «-16-522079 A7 __B7 V. Description of the invention (彳 4) Practical application, and a base wheel with a thickness smaller than 0.1 is easily broken or broken during the cutting work. (Please read the precautions on the back before filling out this page.) The multi-cut grinding wheel assembly of the honing blade is of course useful for cutting or slicing any hard and fragile materials, but it is especially useful for sintered rare earth metals. Processed production of base alloy permanent magnet cutting, or more specifically, suitable for containing 5 to 40% by weight of rare earth metals or metals, 50 to 90% iron and 0.2 to 8% boron Rare earth-iron-boron type magnets. In order to further improve the magnet's magnetic properties and corrosion resistance, the magnet can be added in a limited amount of one or more containing carbon, aluminum, silicon, titanium, vanadium, chromium, manganese, cobalt, nickel. Elements of copper, zinc, gallium, chromium, niobium, molybdenum, silver, tin, and tungsten. Although the total weight of cobalt can be as large as 30%, these additional elements usually do not exceed 8% based on the total alloy composition weight, because excessively large amounts of additional elements have the opposite effect of reducing magnet magnetism. The above-mentioned sintered rare earth-iron-boron magnet alloy permanent magnets are printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs, which can be made in accordance with traditional powder metallurgy procedures, and individual elements of which are incorporated into the molten alloy according to a specific weight ratio After that, the melt was cast into alloy ingots, which were finely pulverized into particles with an average particle diameter of 1 to 20 // m. The alloy powder was compression-molded into a compact body in a magnetic field ( green body) 'Finally, the compacted body of the alloy powder is sintered and aged at a temperature of 1,000 to 120 ° C for 0.5 to 5 hours, and then at a temperature of 4 to 0 to 1 0 0 0 For heat treatment of sintering and aging. The multi-cutting grinding wheel assembly of the honing blade described above according to the present invention is an outer cutting cutting wheel composed of a plurality of base wheels. The paper size of each base wheel applies the Chinese National Standard (CNS) A4 specification (210X 297 male) (%) -17- Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 522079 A7 ___B7 V. Description of the invention (15) In accordance with the Young's modulus 45000 to 70,000 kgf / mm2 or the Vickers hardness Hv 900 to 2000, or both Parameters and shaped into a circular disc, which can be advantageously used to cut or slice hard and fragile materials such as sintered rare earth metal-based permanent magnets, and can still be used despite the relatively narrow thickness of the base wheel The balance between stable cutting accuracy and durability helps to save the cost of cutting work, and improves productivity while significantly reducing the material loss of the cutting. Next, the multi-cutting grinding wheel assembly of the honing blade of the present invention will be described in more detail with examples and comparative examples. However, the present invention is by no means limited to the scope of these examples. Example 1 A super-hard alloy consisting of a Young's modulus of 6 2 0 0 0 kgf / mm2, 90% tungsten carbide and 10% cobalt by weight, was formed into an outer diameter of 115 mm and an inner diameter. A circular disk of 40 mm and a thickness of 0.4 mm was used as a base wheel for a cutting wheel with a honing blade. A honing blade layer of diamond particles is formed on the outer edge of the base wheel and surrounds the outer edge by a resin bonding method in the following manner. Therefore, the base wheel is placed in a metal mold, and in the space around the base wheel, diamond particles with an average particle size of 15% by volume and a heat-curable phenol resin of 75% by volume are inserted. The fine-grained honing admixture was then pressed into the shape of a cutting wheel with a honing blade and the phenolic resin was cured in situ at 180 ° C for 2 hours. After cooling, the cutting wheel is taken out of the metal mold and polished on the honing machine to obtain a paper size of 0.5 millimeters. Applicable to China National Standards (CNS) A4 specifications (210 × 29? Mm) (Please read first Note on the back, please fill out this page again.) ········································································· Two cutting wheels were prepared in the manner described above. A cutting wheel with a honing blade is mounted on a 40 mm diameter shaft and a spacer of 1 β 6 mm thickness is used to maintain a 1.6 mm interval to assemble an outer diameter of 80 mm and an inner diameter of 4 mm. mm cutting wheel assembly with double blades. This dual-edged cutting wheel assembly was used to perform a cutting test on a sintered metal block of a permanent magnet alloy of one ammonium, iron, and boron at a rotation rate of 50000 pm. The cutting rate is 12 mm / min, and the cutting area is 40 mm in width and 15 mm in depth in order to make a magnet sheet with a target thickness of 1. 50 mm and a control limit of 0. 05 mm in each cutting operation. . The cutting work was performed 1000 times in the manner described above, and the thickness of the magnet disk obtained from every ten cutting operations was measured with an outer centimeter at the approximate center point of the magnet disk, and the results were presented. The polygon line I in Figure 3, where the data to the left of the polygon line I represents the product obtained in the first cutting operation. Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page). From this figure, you can understand that the thickness of each magnet plate obtained from this cutting test is just within the target control limit. There is no need to adjust any spacer thickness. Comparative Example 1 The experimental procedure is substantially the same as that of Example 1, except that the base wheel made of cemented carbide used in each cutting wheel is replaced with a base wheel made of a conventional alloy tool steel of SK D grade. Thickness of the magnet sheet This paper size is in accordance with Chinese National Standard (CNS) A4 (210X 297 mm) -19- 522079 A7 B7 V. Description of the invention (17) The degree measurement results are indicated by the polygonal line I I in Fig. 3. When the measured thickness falls outside the control limit, the spacer thickness is adjusted by 100 v um, 100 / zm, and 50/50 m after the 100th, 50th, and 90th operations, respectively. / m. Example 2. Another super-hard alloy consisting of a Young's modulus of 5 5000 kg f / mm2, consisting of 85% tungsten carbide and 15% cobalt by weight, was molded to have an outer diameter of 1 2 5 A circular magnetic disk with a diameter of 40 mm and an inner diameter of 40 mm and a thickness of 0.5 mm was used to form a base wheel for a cutting wheel with a honing blade. A honing admixture of 20% by volume diamond particles with an average particle size of 120 and 80% by volume heat-curable phenolic resin particles is used as a honing admixture to form a diamond particle on and around the outer edge of the base wheel. Honing blade layer to make a cutting wheel with a honing blade thickness of 0.6 mm. Thirty-one cutting wheels with honing blades were prepared in the manner described above. Printed by the Shell Standard Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling this page). A cutting wheel with a honing blade prepared in this way, on a 40 mm diameter axis, with 1 · A spacer with a thickness of 1 mm, an outer diameter of 80 mm and an inner diameter of 40 mm was inserted into an adjacent grinding wheel and assembled into a cutting wheel assembly with 31 blades. The multi-cutting grinding wheel assembly prepared in this way was used to rotate a sintered rare-earth metal-based magnet with a size of 50 × 30 × 20 mm in a size of 50 × 30 × 20 mm at a rotation rate of 6000 rpm. The block is used as a workpiece for cutting test. The cutting direction is perpendicular to a 50 mm long side and the cutting rate is the paper standard applicable to the Chinese National Standard (CNS) Λ4 specification (210X 297 mm) -20- 522079 A7 _____B7 V. Description of the invention (18) 15 mm / min, in order to cut 30 magnetic sheets having an area of 30 mm X 20 mm with a target thickness of 1 β 0 mm and a control limit of ± 0.5 mm in each cutting operation. This cutting operation test was repeated on 1,000 workpieces to produce 30,000 magnet plates, and the thickness of each piece was measured at about the center point to find that the magnet plate thus manufactured was within the control limit of 1 · 0 ± 0 · 〇5. No need to adjust any spacer thickness and replace the cutting wheel. The cut material yield is 60%. Comparative Example 2 The experimental procedure is essentially the same as that of Example 2. Except that the base wheel made of cemented carbide used in the cutting wheel is replaced with SKD of the same size A base wheel made of a grade of conventional alloy tool steel. Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperatives ^ L ——.----- •: Install an I (Please read the precautions on the back before filling this page) The result of the cutting operation test is that these 3 0 The required thickness of 0 0 0 pieces of magnet plates needs to be adjusted by a total of 1 18 times the thickness of the spacers and replaced with a new prepared cutting wheel 27 times • in order to be controlled within the limit. Among them, when using a spacer sandwich When the thickness of the magnet cut by the grinding wheel is not within the control limit, the thickness adjustment of the spacer is implemented, and when the thickness of the spacer is adjusted three times on the same cutting wheel, it is still not guaranteed that the thickness of the magnet is within the control limit, it is replaced. Cutting wheel. The cut material yield was 60%. Comparative Example 3 This experimental procedure is substantially the same as Comparative Example 2, except that each paper size applies the Chinese National Standards (CNS) A4 specification (210X297 mm> -21-522079 A7 B7 V. Description of the invention ( 19) (Please read the notes on the back before filling this page) The thickness of SKH steel base wheel is 0.9mm, and the thickness of the honing blade layer of the cutting wheel with honing blade is 1.0mm. Thick cutting wheels, multiple cutting wheel components are combined into 25 cutting blades instead of the original 31, so that 2 4 pieces of magnets can be obtained in a single cutting operation. As a result of this cutting test, 24,000 pieces of magnets The required thickness of the sheet can only be controlled within the limit by adjusting the thickness of the spacer a total of 15 times and replacing the newly prepared cutting wheel 2 times. The material yield for this cutting is 48%. Example 3 A The cemented carbide is composed of a Young's modulus of 5 0 0 0 0 0 kgf / mm2, 80% of tungsten carbide and 20% of cobalt by weight, and is molded to have an outer diameter of 100 mm and an inner diameter of 40 mm And a ring magnet with a thickness of 0.3 mm To make a base wheel for a cutting wheel with a honing blade. A honing blade layer for honing particles is an artificial diamond particle with an average particle size of 10 0 // m in a ratio of 1: 1 by weight and the Ministry of Economic Affairs The boron nitride particles printed by the Consumer Standards Cooperative of the Central Bureau of Standards were formed on and around the outer edge of the base wheel in accordance with the following metal bonding method. So 'the base wheel is placed in a metal mold' and there is a space around the base wheel. Inside, a honing admixture made by mixing honing particles with a volume of 15% and bonded metal particles with a volume of 85% was then pressed into a cutting wheel shape with a honing blade and placed at 700 ° C. The degree of calcination is 2 hours. After cooling, the cutting wheel is taken out of the metal mold and polished on the calender, so that each honing blade has a thickness of 0.4 mm. Two pieces of cutting sand The paper dimensions are applicable to Chinese national standards (CNS) Α4ί See grid (21 × 297 mm) 522079 Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (2) The wheel is prepared in the manner described above. A sintered rare earth metal The cutting test of the magnet block was performed in the same manner as in Example 1, using the two prepared above assembling on a 40 mm diameter shaft with an outer diameter of 75 mm, an inner diameter of 40 mm, and a thickness of 2 · A 1-mm double-edged cutting wheel assembly consisting of a cutting wheel with a spacer. The cutting wheel assembly rotates at a speed of 5 500 rpm, and the rate of cutting magnetic blocks is 8 mm / min in a 50 mm X 1 0 Mm cutting area. The thickness of the cutting target is 2.0 mm and the control limit is within ± 0.05 mm. As shown by the polygonal line melon in FIG. 4, the cutting test results of 500 magnet pieces are very satisfactory, and the thickness of the magnet pieces sampled from every 20 operations up to 500 cutting operations is not Need to undergo any spacer thickness adjustment to stay within control. The data plotted on the left end of the polygon line in indicates the magnet pieces obtained in the first cutting operation. Comparative Example 4 This experimental procedure is substantially the same as the above Example 3, except that each cutting wheel is equipped with the same-scale base wheel made of S KH high-speed steel instead of the original cemented carbide. As a result of the cutting operation test, after repeating the cutting operation 30 times, adjustment of the spacer thickness by 50 / m each time is necessary to ensure that the thickness of the magnet piece is within the control range. The cutting test cannot be continued for more than 240 operations, because the cutting resistance of the product is increased improperly and the thickness cannot be controlled, as shown by the polygonal line IV in FIG. 4. This paper size applies to Chinese National Standard (CNS) A4 (21〇X: 297 mm) L-- · ----- # ^ (Please read the precautions on the back before filling this page)
-23- 522079 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明（21 ) 實施例 4 一個超硬合金由具有維克斯硬度1 5 0 0、按重量計 算由9 0%的碳化鎢和1 0%的鈷組成，成型爲具有外徑 115毫米、內徑40毫米和厚度0·3毫米的環形的磁 碟片，作成一個具有硏磨刀刃之切割砂輪的基輪。一種體 積比2 5%平均粒徑1 5 0 //m的鑽石微粒和體積比7 5 %熱可固化的酚醛樹脂的微粒混合的硏磨摻合劑被用來與 實施例1相同的樹脂膠合方式在基輪外緣上及周圍形成一 厚度0·4毫米的鑽石微粒的硏磨刀刃層。二十七片切割 砂輪依照上述的方式被準備好。 這二十七片切割砂輪裝配在一個4 0毫米直徑的軸上 而形成一個多重切割砂輪組件，其分別以外徑8 0毫米、 內徑4 0毫米、厚度1 · 6毫米的間隔件間隔開來。一項 切割測試在這個多重切割砂輪組件實施，用轉速6 0 0 0 r pm以切割速率2 2毫米/分，對於一個5 0毫米X 3 0毫米X 1 5毫米的經燒結的稀土金屬磁鐵塊，進行一 次獲得26片磁鐵片的切割操作。切割目標厚度是1.5 毫米而控制界限在±0·05毫米之內。 進行1 0 0 0次切割操作的切割測試結果十分令人滿 意，因爲所有磁鐵片產品都符合厚度控制範圍，而不需要 調整間隔件厚度以及替換新的切割砂輪。 比較實施例 5 實驗的程序實質上與實施例4 一致，除了基輪是由一 本纸張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） (讀先閱讀背面之注意事項再填寫本頁) 装· -94 - 522079 A7 B7 五、發明説明（22 ) 合金工具鋼S K D代替該超硬合金。 切割測試結果是，在完成200、4〇〇、600、 8 〇 0和1 〇 〇 〇次切割操作，分別需要調整間隔件厚度 總次數16次、28次、45次' 6 1次和92次，而完 成 2〇〇、400、600、800 和 1〇〇〇 次切割操 作’需要替換切割砂輪總數分別爲3次' 7次、1 2次、 1 9次和2 6次。 實施例 5 經濟部中央標隼局貝工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 另一個超硬合金由具有維克斯硬度Hv 1250、 按重量計算由8 5%的碳化鎢和1 5%的鈷組成，成型爲 具有外徑1 2 5毫米、內徑40毫米和厚度的〇 · 4毫米 環形的磁碟片，作成一個具有硏磨刀刃之切割砂輪的基輪 。一種體積比2 0%平均粒徑1 2 0 //m的鑽石微粒和體 積比8 0%熱可固化的酚醛樹脂的微粒混合的硏磨摻合劑 被用來在基輪外緣上及周圍形成一厚度〇·5毫米的鑽石 微粒的硏磨刀刃層。三十四片具有硏磨刀刃之切割砂輪依 照上述的方式被準備好。 如此準備好的三十四片切割砂輪裝配在一個4 0毫米 直徑的軸上而形成一個具有硏磨刀刃之切割砂輪組件，其 分別以外徑80毫米、內徑40毫米、厚度1·6毫米的 間隔件間隔開來。 ~'項切割測試在适個依此製備的多重切割砂輪組件實 施，用轉速5500 r pm以切割速率1 5毫米/分，對 本纸張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -25- 522079 經濟部中央標準局貝工消費合作社印製 A7 B7 五、發明説明（23) 於一個5 0毫米X 3 0毫米X 2 0毫米的經燒結的以稀土 金屬爲底的鈸-鐵-硼磁鐵塊，依照實施例2相同的方式 9進行一次獲得3 3片尺寸爲3 0毫米X 2 0毫米磁鐵片 的切割操作，切割目標厚度是1·0毫米而控制界限在士 0 . 05毫米之內。該切割操作測試被反複在1000塊 上，以生產3 3 0 0 0片磁鐵板材，每片在大約中心點的 厚度被測量，以確保這樣製造出的磁鐵板材介於1 . 0 士 0 · 0 5控制界限，不需要調整任何間隔件厚度和替換切 割砂輪。該切割的材料產率是6 0%。 比較實施例 6 本實驗的程序實質上與上描述的實施例5 —樣，除了 將維克斯硬度Hv爲1 2 5 0 e的超硬合金作成的基輪， 替換成爲以另一種維克斯硬度H v爲8 0 0的超硬合金作 成的同尺度基輪。 該切割操作測試的結果是，該些3 3 0 0 0片磁鐵板 材的預計厚度，需要靠總計2 8次的間隔件厚度調整及替 換新準備好的切割砂輪4次，才能控制在界限之內。該切 割的材料產率是6 6%。 比較實施例 7 本實驗程序實質上與比較實施例5 —致，除了替換維 克斯硬度Hv 1 2 5 0的超硬合金基輪，成爲厚度 0 · 9毫米的合金工具鋼SKD製成的基輪，以及增加硏 本纸張尺度適用中國國家標準（CNS ) Α料見格（2]0Χ297公釐） (請先閱讀背面之注意事項再填寫本頁) Λ衣. 訂 -26- 522079 A7 B7_______ 五、發明説明（24 ) 磨刀刃層厚度由0·5毫米到1.0毫米。更進一步的， 該多重切割砂輪組件是由2 5個切割砂輪建置而成，以能 在單次切割操作中獲得2 4片磁鐵片。 其切割測試的結果是，2 4 0 0 0片磁鐵片需要的厚 度，只能靠總計3 1次的間隔件厚度調整及替換新準備好 的切割砂輪6次，才能控制在界限之內。該切割的材料產 率是4 8 %。 實施例 6 另一種超硬合金由具有維克斯硬度Hv 1100、 按重量計算由8 0%的碳化鎢和2 0%的鈷組成，成型爲 具有外徑1 0 5毫米、內徑40毫米和厚度0 · 3毫米毫 米環形的磁碟片，作成一種具有硏磨刀刃之切割砂輪的基 輪。 一種體積比8 5%之由7 0重量％銅及3 0重量％錫 組成的黏合金屬和體積比1 5%之具有平均粒徑1 0 0 // m且以1 : 1重量比例混合的鑽石微粒及立方氮化硼微 經濟部中央標準局員工消費合作社印裝 (請先閱讀背面之注意事項再填寫本頁) 粒所形成的混合物被用來以金屬黏合方法在基輪外緣上及 周圍形成一硏磨微粒的硏磨刀刃層。以壓力成形後的刀刃 ，接下來經過2小時7 0 0 °C的熱處理作成厚度0 · 4毫 米的硏磨刀刃層。3 2個具有硏磨刀刃之切割砂輪被依照 上述方式準備好。 像這樣準備好的具有硏磨刀刃之切割砂輪，在--個 40毫米直徑軸心上，以1·3毫米厚、外徑75毫米、 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -27- 經濟部中央標準局員工消費合作社印製 522079 A7 B7 五、發明説明（25 ) 內徑4 0毫米的間隔件插入毗鄰的砂輪，裝配成一個具有 3 2片刀刃之切割砂輪組件。 一項切割測試在這個依此製備的多重切割砂輪組件實 施，用轉速8 0 0 0 r pm以切割方向垂直於5 0毫米長 的邊而切割速率是2 5毫米/分，對於一個5 0毫米X 3 0毫米X 2 0毫米的經燒結的以稀土金屬爲底的鈸-鐵 —硼磁鐵塊，進行一次獲得3 1片尺寸爲3 0毫米X 1 0 毫米面積的磁鐵片的切割操作，切割目標厚度是1·2毫 米而控制界限在± 0 . 0 5毫米之內。該切割操作測試被 反複在1000塊上，以生產31000片磁鐵板材，每 片在大約中心點的厚度被測量，而發現這樣製造出的磁鐵 板材介於1 · 2 土 0 . 0 5控制界限，不需要調整任何間 隔件厚度和替換切割砂輪。 比較實施例 8 本實驗的程序實質上與上述的實施例6 —樣，除了將 超硬合金作成的基輪，替換成爲以等級S KH高速鋼作成 的同尺度基輪。 該切割操作測試的結果是，要控制切割自1 〇 〇 〇塊 磁鐵塊的3 1 0 0 0片磁鐵片的預計厚度在界限之內，只 能分別靠總計2 2次、4 1次、7 8次、1 2 5次和 1 6 1次的間隔件厚度調整，及分別替換新準備好的切割 砂輪4次、1 1次、1 8次、3 6次和4 7次，才能分別 的完成切割最初2 0 0塊、最初4 〇 〇塊、最初6 0 0塊 本紙張尺度適用中國國家標準（CNS ) A4規格（ϋ〇χ^97公髮） ' -28 - (請先閱讀背面之注意事項再填寫本頁 、11 522079 A7 B7 五、發明説明（26 ) 、最初8 0 0塊和全部1 0 0 0塊磁鐵塊。 經濟部中央標準局員工消費合作社印f (請先閱讀背面之注意事項再填寫本頁) 本纸張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -29 --23- 522079 A7 B7 printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the Invention (21) Example 4 A super-hard alloy made of carbon with a Vickers hardness of 15 0 0 and a carbonation of 90% by weight Tungsten and 10% cobalt are formed into a circular disk with an outer diameter of 115 mm, an inner diameter of 40 mm, and a thickness of 0.3 mm, and a base wheel of a cutting wheel with a honing blade is formed. A honing admixture of a mixture of diamond particles with a volume ratio of 2 5% and an average particle size of 15 0 // m and particles with a heat ratio of 75% by volume of a heat-curable phenolic resin is used in the same resin bonding method as in Example 1. A honing blade layer of diamond particles with a thickness of 0.4 mm is formed on and around the outer edge of the base wheel. Twenty-seven-piece cutting wheels were prepared in the manner described above. These twenty-seven cutting wheels are assembled on a 40 mm diameter shaft to form a multiple cutting wheel assembly, which are separated by spacers with an outer diameter of 80 mm, an inner diameter of 40 mm, and a thickness of 1.6 mm. . A cutting test was performed on this multi-cutting grinding wheel assembly at a cutting speed of 22 mm / min at a speed of 6 0 0 r pm, for a 50 mm X 30 mm X 1 5 mm sintered rare earth metal magnet block , To perform a cutting operation to obtain 26 magnet pieces at a time. The cutting target thickness is 1.5 mm and the control limit is within ± 0.05 mm. The cutting test results of 1,000 cutting operations are very satisfactory, because all magnet products meet the thickness control range without the need to adjust the thickness of the spacers and replace with new cutting wheels. Comparative Example 5 The procedure of the experiment is basically the same as that of Example 4, except that the base wheel is a paper size that applies the Chinese National Standard (CNS) A4 specification (210X 297 mm). (Read the precautions on the back before filling (This page) Installation · -94-522079 A7 B7 V. Description of the invention (22) The alloy tool steel SKD replaces the superhard alloy. The cutting test results are that after completing 200, 400, 600, 8000, and 10,000 cutting operations, the total number of spacer thickness adjustments needs to be adjusted 16 times, 28 times, 45 times, '61 times, and 92 times, respectively. , And the completion of 2000, 400, 600, 800 and 10,000 cutting operations 'need to replace the cutting wheel total of 3 times' 7 times, 12 times, 19 times and 26 times. Example 5 Printed by the Central Bureau of Standards, Ministry of Economic Affairs, Shellfish Consumer Cooperative (please read the precautions on the back before filling this page). Another super-hard alloy is made of Vickers hardness Hv 1250, and is 85% by weight. Tungsten carbide and 15% cobalt are formed into a circular disk with an outer diameter of 125 mm, an inner diameter of 40 mm, and a thickness of 0.4 mm, and a base wheel with a honing blade for a cutting wheel is formed. A honing admixture of 20% by volume diamond particles with an average particle size of 1 2 // m and 80% by volume heat-curable phenolic resin particles is used to form a honing admixture on and around the outer edge of the base wheel. A honing blade layer of diamond particles with a thickness of 0.5 mm. Thirty-four cutting wheels with honing blades were prepared in the manner described above. Thirty-four cutting wheels prepared in this way are assembled on a 40 mm diameter shaft to form a cutting wheel assembly with a honing blade. The cutting wheel components have an outer diameter of 80 mm, an inner diameter of 40 mm, and a thickness of 1.6 mm. The spacers are spaced apart. The ~ 'cutting test was carried out on a suitable multi-cutting grinding wheel assembly prepared in this way, using a speed of 5500 r pm and a cutting rate of 15 mm / min. The Chinese national standard (CNS) A4 specification (210X297 mm) is applied to the paper size. -25- 522079 A7 B7 printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (23) On a 50 mm X 30 mm X 2 0 mm sintered rhenium-iron based on rare earth metal -Boron magnet block, according to the same way as in Example 2, 9 cutting operations to obtain 3 3 pieces of 30 mm x 20 mm magnet pieces, the cutting target thickness is 1.0 mm and the control limit is ± 0.05 Within millimeters. This cutting operation test was repeated on 1,000 pieces to produce 3 3 000 magnet plates, and the thickness of each piece was measured at about the center point to ensure that the magnet plate thus manufactured was between 1.0 ± 0 · 0 5Control limits, no need to adjust any spacer thickness and replace cutting wheel. The cut material yield was 60%. Comparative Example 6 The procedure of this experiment is essentially the same as that of Example 5 described above, except that a base wheel made of a superhard alloy having a Vickers hardness Hv of 1 2 5 0 e is replaced with another Vickers A base wheel of the same size made of cemented carbide with a hardness H v of 800. The result of the cutting operation test is that the estimated thickness of these 33,000 magnet plates needs to be adjusted by the thickness of the spacers a total of 28 times and replaced with a newly prepared cutting wheel 4 times in order to be within the limit. . The yield of the cut material was 6 6%. Comparative Example 7 This experimental procedure is substantially the same as that of Comparative Example 5, except that it replaces the super-hard alloy base wheel with a Vickers hardness of Hv 1 2 50, and becomes a base made of alloy tool steel SKD with a thickness of 0.9 mm. Round, and increase the size of the paper to apply Chinese National Standards (CNS) Α material see the standard (2) 0 × 297 mm) (Please read the precautions on the back before filling this page) Λ clothing. Order-26- 522079 A7 B7_______ 5. Description of the invention (24) The thickness of the sharpening blade layer is from 0.5 mm to 1.0 mm. Furthermore, the multi-cutting grinding wheel assembly is constructed by 25 cutting wheels, so as to obtain 24 magnet pieces in a single cutting operation. As a result of the cutting test, the required thickness of 24,000 magnet pieces can only be controlled within the limit by adjusting the spacer thickness a total of 31 times and replacing the newly prepared cutting wheel 6 times. The cut material yield is 48%. Example 6 Another super-hard alloy is composed of having a Vickers hardness Hv 1100, 80% tungsten carbide and 20% cobalt by weight, and is molded to have an outer diameter of 105 mm and an inner diameter of 40 mm and A circular disk with a thickness of 0.3 mm is formed as a base wheel for a cutting wheel with a honing blade. A bonded metal consisting of 70% by weight copper and 30% by weight tin with a volume ratio of 8 5% and a diamond with an average particle size of 1 0 0 // m and a 1: 1 weight ratio mixed with a volume ratio of 15% Particles and cubic boron nitride micro-economy printed by the Consumer Cooperatives of the Central Bureau of Standards (please read the precautions on the back before filling this page) The mixture formed by the particles is used on the periphery of the base wheel and around the base wheel by metal bonding A honing blade layer of honing particles is formed. The blade after pressure forming was then heat-treated at 700 ° C for 2 hours to form a honing blade layer having a thickness of 0.4 mm. 3 2 cutting wheels with honing blades are prepared as described above. A cutting wheel with a honing blade prepared in this way, on a 40 mm diameter axis, with a thickness of 1.3 mm and an outer diameter of 75 mm, the paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X 297 mm) -27- Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 522079 A7 B7 V. Description of the invention (25) A spacer with an inner diameter of 40 mm is inserted into an adjacent grinding wheel and assembled into a cutting with 3 or 2 blades Grinding wheel assembly. A cutting test was performed on this multi-cutting grinding wheel assembly prepared in this way, using a rotating speed of 8 0 0 r pm in a cutting direction perpendicular to a 50 mm long side and a cutting rate of 25 mm / min. For a 50 mm X 3 0 mm X 2 0 mm sintered rhenium-iron-boron magnet blocks with rare earth metal as the base, perform a cutting operation to obtain 31 pieces of magnet pieces with a size of 30 mm X 10 mm, and cut The target thickness is 1.2 mm and the control limit is within ± 0.05 mm. The cutting operation test was repeated on 1,000 pieces to produce 31,000 magnet plates, and the thickness of each piece was measured at about the center point, and it was found that the magnet plate thus manufactured was within the control limit of 1.2 soil 0.05. There is no need to adjust any spacer thickness and replace the cutting wheel. Comparative Example 8 The procedure of this experiment is essentially the same as that of Example 6 above, except that the base wheel made of cemented carbide is replaced with a base wheel of the same size made of grade S KH high speed steel. As a result of the cutting operation test, it is necessary to control the expected thickness of 3,100 magnet pieces cut from 1,000 magnet pieces within the limit, which can only be achieved by a total of 22 times, 41 times, and 7 times, respectively. The spacer thickness adjustments of 8 times, 125 times and 161 times, and replacing the newly prepared cutting wheels 4 times, 11 times, 18 times, 36 times, and 47 times respectively, can be completed separately. Cutting the first 2000 pieces, the first 4,000 pieces, the first 6,000 pieces This paper size is applicable to the Chinese National Standard (CNS) A4 specification (ϋ〇χ ^ 97 issued) '-28-(Please read the note on the back first Please fill in this page again, 11 522079 A7 B7 V. Description of the invention (26), the first 800 pieces and all 1000 magnet pieces. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (Please read the note on the back first) Please fill in this page again for this matter) This paper size applies to China National Standard (CNS) A4 specification (210X 297 mm) -29-