JP2020192800A - 大型複雑部品の選択的レーザー焼結成形装置、システム、および方法 - Google Patents
大型複雑部品の選択的レーザー焼結成形装置、システム、および方法 Download PDFInfo
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Abstract
Description
2 粉末除去装置
3 ポスト固化−炭化装置
6 ガイドレール
7 地面
10 筐体
11 レーザー
12 ガルボ
13 保温層
14 加熱ユニット
15 散粉ロール
16 給粉シリンダ
17 成形シリンダ
18 シリンダ壁
19 成形ブランク
20 隔離ユニット
111 成形シリンダシリンダ壁の昇降機構
112 上下駆動機構
113 滑車
115 地面
21 排気口
22 吸気口
23 回転軌道
24 粉末除去室ドア
25 粉末除去室
30 気密室
31 気密室ドア
32 気密層
33 加熱機構
34 排気管
35 吸気管
Claims (9)
- 成形機構、成形台、および駆動機構を含む選択的レーザー焼結成形装置であって、
前記成形台が、成形用部品の成形プラットフォームであり、前記成形機構が、前記成形台の上方に設置され、成形台の上で成形用部品のスライス層を散粉し、散布した粉末に対して選択的レーザー焼結成形するために使用され、
前記駆動機構が、前記成形機構の下方に設置され、前記駆動機構が、上下駆動機構および水平駆動機構を含み、前記成形機構が前記成形台の上で1つのスライス層の選択的レーザー焼結成形を完了させた後、前記上下駆動機構が、前記成形機構を駆動して1つのスライス層の高さを増やし、成形台の高さが変動しない状況で、前記成形機構の高さをレイヤーごとに増やすことにより成形用部品の積層加工を実現し、成形過程において成形台が成形用部品の上下移動に連動するのを防ぎ、前記水平駆動機構が、前記成形機構を駆動して成形台上方の水平方向において前後移動させるために使用され、これにより、前記成形機構を前記成形台の上方に移動させる、あるいは成形台と分離させて、成形部品を成形台に残して後続の工程を実行できるようにし、SLS成形完了後に成形部品が移動するのを防ぐ
ことを特徴とする大型複雑備品の選択的レーザー焼結成形装置。 - 前記成形機構が、筐体(10)および散粉ユニットを含み、前記散粉ユニットが、前記筐体の下方に設置され、給粉シリンダ(16)および散粉ロール(15)を含み、前記給粉シリンダ(16)が、前記成形台の両側に対称的に設置され、前記散粉ロール(15)が、前記給粉シリンダと成形台の間で前後移動して、前記給粉シリンダ(16)内の粉末を前記成形台の上に散布して散粉を実現し、前記筐体の中に隔離ユニット(20)が設置され、前記隔離ユニット(20)が、前記筐体の内部空間を上半分部分と下半分部分に分割し、前記上半分部分にレーザー、ガルバノメータユニットが設置され、レーザーを発射して前記成形台の上の粉末に対して選択的レーザー焼結成形を行うために使用され、前記下半分部分が、成形用部品の成形室であり、その中に均一に分配された複数の加熱ユニット(14)が設置され、前記成形台の上の粉末に対してレーザー焼結前の予熱を行うために使用される請求項1に記載の大型複雑備品の選択的レーザー焼結成形装置。
- 前記成形台の中に成形シリンダ(17)が設置され、前記散粉ユニットの粉末が、前記成形シリンダの上に散布され、1つのスライス層の成形が完了した後、前記成形シリンダのシリンダ壁(18)が1つのスライス層の厚さを増やして、成形シリンダ中の粉末が散落するのを防ぐ請求項1または2に記載の大型複雑備品の選択的レーザー焼結成形装置。
- 前記筐体(10)の内側に保温層(13)が設置され、前記成形室の中の温度を保持するために使用される請求項1〜3のいずれか1項に記載の大型複雑備品の選択的レーザー焼結成形装置。
- 請求項1〜4のいずれか1項に記載の選択的レーザー焼結成形装置、粉末除去装置(2)、およびポスト固化−炭化装置(3)を含む選択的レーザー焼結SiCセラミック部品の成形システムであって、
前記選択的レーザー焼結成形装置の水平駆動機構が、前記成形台の両側に設置されたガイドレール(6)を含み、前記選択的レーザー焼結成形装置(1)、粉末除去装置(2)、およびポスト固化−炭化装置(3)の上にいずれも前記ガイドレール(6)と嵌合する滑車(113)が設置され、前記選択的レーザー焼結成形装置、粉末除去装置、およびポスト固化−炭化装置が、ガイドレール(6)の上を移動することにより、順番に前記成形台の上の成形用部品に対して選択的レーザー焼結成形、粉末除去、ポスト固化および炭化工程を行う
ことを特徴とする選択的レーザー焼結SiCセラミック部品の成形システム。 - 前記粉末除去装置が、粉末除去室(25)を含み、前記粉末除去室内の回転軌道(23)、排気口(21)、および吸気口(22)に設置され、前記排気口(21)および吸気口(22)が、前記回転軌道(23)に設置されて回転し、前記粉末除去装置(2)が前記成形台の上方に移動した時、前記成形台が前記粉末除去室の回転軌道中央に配置され、前記排気口と吸気口の嵌合により前記成形台の上の成形部品の上にある残余粉末を除去する請求項5に記載のSiCセラミック部品の成形システム。
- 前記ポスト固化−炭化装置(3)が、気密室(30)および加熱機構(33)を含み、前記気密室が、成形台の上の成形部品を密封するために使用され、前記加熱機構が、前記成形台を取り囲み、成形部品に対して加熱後固化を行うために使用され、前記気密室の上に吸気管(34)と排気管(35)が設置され、前記排気管と前記吸気管により前記気密室内の真空または不活性ガス雰囲気を保持する請求項5または6に記載のSiCセラミック部品の成形システム。
- 請求項5〜7のいずれか1項に記載のSiCセラミック部品成形システムを利用してSiCセラミック部品を成形する成形方法であって、
(a)樹脂または樹脂複合材料を原料として選択し、成形用部品の構造に基づいて3Dモデルを作成し、前記3Dモデルの切片に対して複数のスライス層の情報を取得して、前記原料を前記成形機構の中に配置し、前記各スライス層の情報に基づいて、散粉ユニットにより成形台の上に散粉し、加熱ユニットにより散布した粉末に対して予熱を行い、レーザーユニットにより予熱した粉末に対して選択的レーザー焼結成形を行うことによって、1つのスライス層の加工を完了させ、成形機構により1つのスライス層の高さを増やし、次のスライス層に対して加工を行うことによって、成形用部品をレイヤーごとに成形し、前記成形台の上に成形用部品のブランクを取得するステップと、
(b)前記成形機構を前記成形台の上方から移動させて、前記粉末除去装置を前記成形台の上方に移動させ、前記回転軌道を回転させて、前記排気口と吸気口の共同作業により、前記ブランクを360度回転させて粉末除去を行うステップと、
(c)前記粉末除去装置を前記成形台の上方から移動させて、前記ポスト固化−炭化装置を前記成形台の上方に移動させ、前記気密室のドアを閉めて、加熱機構により加熱を開始して前記ブランクをポスト固化させ;気密室内を不活性ガスで満たし、または真空にして、加熱機構により600℃〜1500℃に加熱して、固化後のブランクを炭化させることによって、必要な部品のカーボンプリフォームを取得し、このカーボンプリフォームをケイ化処理して、必要なSiCセラミック部品を取得するステップと、
を含むSiCセラミック部品の成形方法。 - ステップ(c)において、前記ケイ化処理の方法が、前駆体含浸分解法、化学気相浸透法、または反応溶融含浸法を選択して採用する請求項8に記載のSiCセラミック部品の成形方法。
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