1J78004 六、發明說明： 101年7月Π曰修正替換本 【發明所屬之技術領域】 係關於-__雜接工具，特別是關於 種k升㈣與推擠作用之摩擦攪掉溶接工具。 【先前技術】 「声圖所示’係為美國公告第6,"4,242號 娜熔接工具及其方法」糾專利案 ==掉溶接工具8’其具有—本體 ： 為-_，針82形成於該本體81之 ===，且該探針82之直徑小於該本體81之直^ 部^及本體81之徑差在該本㈣之端面形成-肩 欲使用該習知摩擦攪拌炫 並將高速_之摩擦二:=疊’ 面擠入，#兮籽紅^ /、6说。哀金屬板9A之頂 接合界面‘二^達並穿過該二金屬板9A、犯之 對該二 9Α、9Β之間產生 。威，、、’以便在該二金屬板 λ, +熔蛐狀態之塑性區92 ;同砗，茲+ . 相=== 界面91呈半一二= ，二塑::。92之材料固化後’即可將該二金屬 實際所!：1#該習知摩_拌_工具8 不$，咳背知摩擦攪拌熔接工具8朝熔接 1378004 101年7月〗7曰修正替換本 方向後傾，使該本體之令心轴線與該 面垂線之間形成有-後傾負Α 板Α的表 !〜3度。如此，該/部r之一且：：_^ ^面内，另-相對側物與::屬 ，使該肩部83的相對兩側端緣之間相較於炫接二 ^傾斜而具有—高度差；該高度騎為該 端緣播入該金屬板9Α表面内之最大深度η。 之側 其中，該習知摩擦_炫接工具8之肩部幻 =3大深度Η與該後傾角Θ以及該肩部幻直徑 D之關係符合下列公式（〇: ^ 心1) . sin0…⑴ 因此’沿溶接路線前進時，該傾斜之探針a 於炫接路線的前方預先措勒 b 夢由w 1 性區92内的材料，以便 t _斜之肩部83將該些材料向下導弓I並壓實，A係 生==轉之肩部83對該金屬板9A爾;發 生的不振動，有效接## 用。 I文㈣遠塑性區92的攪拌及推擠作 广而’利用具有該後傾角之習知 ==接作Γΐ有諸多缺點，例如:該 接方、8僅月b朝早一特定方向運行’若朝向與原來熔 文到該傾斜之肩部83的 内的材=無法 該金屬板9A本品丹者’该肩部83與 致古亥戶^ #處將不再位於炫接路線的前方，以 % _#料，造成該金屬板 '生溝槽狀缺陷，且發生非常不穩定的振動。 1378004 丨〇1年7月17曰修正替換本 士此外，藉由該探針82攪動該塑性區92内的材料， 使用下’該探針以及肩部U的連結處容易造成應 术中、’且該探針82之直徑遠小於該肩部83之直徑，若 y谷接匕㈣微操作不當，則容易發生探針U斷裂的情 形。 基於上述原因，其確實有必要進一步改良上述習知 摩擦攪拌熔接工具8。 【發明内容】 本發明係提供一種摩擦擾拌炫接工具，JL能夠提升 ==::·並可穩定沿任⑽接方_ 本發明目的係提供一種摩擦攪拌熔接工呈，盆 由增加-炫接攪拌頭與—結合面之間的結合強度/以^ 延長該熔接攪拌頭使用壽命的目的。 “為達顺述發_的，本發明所制之技術 藉由該技術手段所能達到之功效包含有： 。又 根據本發明的摩擦攪拌熔接工具，係包含·—。 體’該圓柱體之一端面係為一結合面；及一熔:圓柱 設置於該結合面，並完全管莒嗲蛀人 見頭， 工兀幻…玄結合面，雜接授拌頭之 卜見矣㈣0柱體之外周緣相切齊，魏接縣頭— 球冠體，且該球冠體之曲率半徑R符合下列公式.、’、、1J78004 VI. Description of the invention: July 2011 Π曰Revised replacement [Technical field to which the invention pertains] relates to the -__hybrid tool, in particular to the friction stir-up tool for the k-liter (four) and push action. [Prior Art] "The sound map is shown in the US Bulletin No. 6, " 4,242 Na welding tool and its method" Correction Patent == Dissolution tool 8' has - body: -_, needle 82 is formed === of the body 81, and the diameter of the probe 82 is smaller than the diameter of the straight portion of the body 81 and the body 81 is formed on the end surface of the body (4) - the shoulder is to be used with the conventional friction stir High speed _ friction 2: = stack 'face squeezed into, #兮籽红 ^ /, 6 said. The top of the smashed metal plate 9A is joined to the second metal plate 9A and is produced between the two metal plates 9A. Wei,,,,, so that in the two metal plates λ, + plastic state of the molten state 92; the same, + + . phase == = interface 91 is half one two =, two plastic::. After the material of 92 is cured, the two metals can be actually used!: 1# The conventional knowledge of the _mixing_tool 8 is not $, the cough back knows the friction stir welding tool 8 toward the fusion 137804 July 71〗 7曰 Correction replacement The backward direction of the direction causes a table of the rear-back inclined plate ! to be formed between the axis of the body of the body and the perpendicular line of the face! In this way, the one of the / part r and the :: _ ^ ^ surface, the other - the opposite side and the :: genus, the opposite side edges of the shoulder 83 are compared with the slanting - height difference; the height ride is the maximum depth η of the edge of the metal plate 9 into the surface of the metal plate. On the side, the relationship between the shoulder friction of the conventional friction_staping tool 8 and the depth of the 3rd depth Η and the shoulder diameter D corresponds to the following formula (〇: ^心1) . sin0...(1) Therefore, when proceeding along the fusion route, the inclined probe a pre-stages the material in the w-sex region 92 in front of the dazzling route, so that the t-slanted shoulder 83 guides the materials downward. Bow I and compaction, A-line == turn shoulder 83 to the metal plate 9A; the occurrence of non-vibration, effective connection ##. I (4) The agitation and pushing of the far plastic zone 92 is wide and 'the use of the conventional caster with the back rake angle== has many disadvantages, for example: the joint, 8 months b only runs in a specific direction earlier' If the material is directed to the inside of the slanted shoulder 83, the metal plate 9A cannot be used. The shoulder 83 and the ancient kobe ^^ will no longer be in front of the sleek route. In the % _# material, the metal plate is caused to have a groove-like defect, and a very unstable vibration occurs. 1378004 71 July 17 曰Correct replacement of the singer In addition, by the probe 82 agitating the material in the plastic zone 92, the use of the lower portion of the probe and the shoulder U is likely to cause intraoperative, ' Moreover, the diameter of the probe 82 is much smaller than the diameter of the shoulder portion 83. If the y valley joint (4) is improperly manipulated, the probe U is likely to be broken. For the above reasons, it is indeed necessary to further improve the above-described conventional friction stir welding tool 8. SUMMARY OF THE INVENTION The present invention provides a friction and spoiler splicing tool, JL can be improved ==::· and can be stabilized along any (10) joint _ the purpose of the present invention is to provide a friction stir welder, the basin is increased - dazzle The bonding strength between the stirring head and the bonding surface is extended to extend the service life of the fusion stirring head. The function of the technology of the present invention which can be achieved by the technical means includes: The friction stir welding tool according to the present invention includes: - the body of the cylinder One end is a joint surface; and a melting: the cylinder is placed on the joint surface, and the tube is completely in the head, the work is illusory... the mysterious joint surface, the miscellaneous joints are mixed with the head (4) 0 cylinder The outer circumference is in line with each other, and the head of the Weixian County is a spherical crown, and the radius of curvature R of the spherical body conforms to the following formula., ',,
R 4h2 + d2 工.R 4h2 + d2 work.
U 其中h係為熔接時該熔接攪拌頭相對於— 之表面垂直陷人的深度，d係為該結合面之直徑，= 6 * * 1378004 . 丨01年7月丨7日修正替換本 11小於或等於該直徑d的二十分之—。 具有該㈣半徑R之炫賤拌頭1提 ^對㈣的攪拌及雜作肖，並可敎的 進行長行程且多道次的炫接作業。 “ ° 【實施方式】 顯易其他目的'特徵及優點能更明 , 文特舉本發明之較佳實施例，並配八私似回 式，作詳細說明如下： -a所附圖 a月茶照第3圖所示，本發明較佳 熔接工具I主要係應用於-摩擦娜熔接備:摩擦· ，接工具〗係設置於該摩峨:==了， 心=加工轴能__摩__^ 二軸 亚赵由-輪送設備沿著χ、γ ^旋轉， 摩擦擾拌炫接工呈1，以由㈣知速旋轉令之 作平△上$ / 乂便5亥摩擦攪拌炫接工具！對-工 工物;相接::工物件進行摩擦獅接作業，使該二加 本發明之摩擦攪拌熔接工| 一炫接檀拌頭m該圓枉體圓柱體η及 111。該熔接攪拌頭12係選擇 心面係為-結合面 於該結合面】η上，#mm日由―肢成形方式對應形成 面⑴，且該炫接_頭12 ====完全覆蓋該結合 周緣的切齊處形成有—交界邊u。°、、…圓柱體u之外 該熔接攪拌頭12係為—雕 率半徑R’嗜曲袁主广u 表怼肢，該球冠體具有一曲 亥曲率+輕反係符合下列公式⑺： (2) 101年7月17曰修正替換本 (2) 101年7月17曰修正替換本 8h 其中，h係為熔接時該熔接 板2A之表面垂直陷 、相對於-金屬 結合面111之直(弟4圖所示），d係為該 之直“思即該圓柱體U之直徑）。 接二下，係可依據該熔 式⑵推導出該炫接携拌頭 利用上述公 該曲率半徑R製做該炫接鮮R ’以便藉由 幾何學所決定的尺寸大 六、係依據接觸面的 請泉昭第4为s^有合易加工成形之優點。 對-全屬W ^ 欲使用該摩擦擾拌溶接工呈1 對-金屬板2A、2B進行搭接炫 板2A、2B重疊置放，金係預先將该-金屬 耐磨的全>1枴，# 〃萄板2A較佳選擇為耐蝕或 丁尸遍屬板，例如.鎳、鎳合 合金或不鐵鋼等，·該金屬板2B較』2疒鈦、鈇 度的金屬板，例如:碳鋼、合金鋼或=某：定強 忒圓柱體11形成高速迴轉狀態，並將W 者使 該金屬板Μ之表面垂直擠入:翻择頭12從 接攪拌頭丨2產生高摩擦熱，使今二7由^速迴轉之炫 能夠形成-半熔融狀態之熱分佈區21^反2=2B。之間 係能夠擴散並超過該二金屬板2Α、 °、，，、刀區21 . 22。因此，藉由該高速迴轉^ 合界面 佈區2丨_該二金翁从、2^^12，使該熱分 #力料’並且藉由該炫接授掉頭12所施加之 屬板2A、2B形成可靠接合之被覆金屬板 ⑧ ^ .φ 年7月17曰修正替換 〜被復i屬板係具有在使用上 磨的特性。 受求之強度、对#及耐 由於本發明之熔接攪拌頭12呈 可達到如以下所述諸多功效：，、有麵率半徑R，故 1、當該熔接攪拌頭12 ^ 時，該交界邊U係與該全屬d该金屬板2A表面 接授拌頭12能夠完全陷人該 t相切齊，使娜 球冠體之頂端餘於該陳體u之中^又’由於該 冠體與該交界邊13上任意點比中心轴線上，使該球 -高度差。因此，”熔二：此。形成相同弧度而具有 ^ 田。亥熔接攪拌頭12任音變換熔接 除了該交界邊13皆能㈣ 接方向 之外，該球冠體亦能夠有效料㈣屬板2A.表面相切齊 並鐵實，其確實提升該敎分佈内刪 =作用，w物轉 振動，使得本發明可r所毛生之不稳疋 行程的炫接作業。"51轉方向進行多道次且長 2、該炫接攪拌頭η係士入罗# , 111，使該炫接«_ 12 輯成於該結合面 為提高，其大幅提并η，、、·。&面111之間的結合面積大 結合強度，更.辭了接獅頭12及結合面⑴的 長了該熔接攪拌頭12 人 ，該炫接攪拌頭12不 时用可叩。據此 分佈區21内之_、#/ "斷裂，進*能夠持續對該熱 巧之材枓進行攪拌及推擠。 除此之外’由於前述習知摩 後傾角Θ值介於卜3产 士、娜总接工具8，在该 利用前述公式⑴可二有較佳的熔接品質，因此 于口 . 5亥殊度Η較佳係小於或等於 該直徑D的二 日 日修正替換本 接工具i也符人二疋以，當本發明之摩擦搅拌炫 之一日士 〇 5亥沬度h小於或等於該直徑d的二十分 ^貝1本發明之摩擦授拌溶接工具1也可以達到盥 =擦搜掉轉…相同之優良炫接品質，：與 縣接工具8更具有上述二項功效。 ，兮严姥1、弟5及6圖所示，在進行多道次搭接熔接時 该溶接授拌頭12係 祕接^ —角落擠入（如第5 ^ 金屬板2A表面之其中 面之中央擠入所不）’或者，從該金屬板2A表 平行該金“ 2A之^並箭頭所示沿著 。藉此，該金屬板2 :: 土函盖5亥金屬板2A表面 另一側，進布之…變形量係能夠從—側逐漸移向. 該接二Γ22 ,屬板2A產生隆起變形，防止 該產生氧化薄層， ，相多道次搭接炼接時 道次所分別產生之局^疊’以便該相鄰二 麵211係深入到達該接 再次更均勻的互沪人足右、刀佈區211内的材料係能夠 強度。更詳言2二+提_接合界面22之接合 另一、首土、蓄一右”中—迢次運行之中心軸線為U， 門呈有^狀、轴線為L2，該二中心轴線L】、L2之 間具有1距P’該間距p係小於該直徑心 到第5、6及7圖所示，由於該熱分佈區21俜 到輪氏數百度的半炫融狀態，且透過熱傳導作用，以致 ^ _ 101年7月17曰修正替插 該二金屬板2A、2R *止 ，尤宜3 屋生不均勻的熱膨脹變形及氧化薄層 由於空:二二22變形後所產生細，更容易 接熔接時可進一 A化缚層。有鑑於此，本發明於搭 化薄層材料3A Γ3Β ^金屬板2A、2B分別塗敷一抗氧 擇容易鱼該-全屬妇 乳化薄層材料3A、3B係可選 例如：鎳、A、2B產生原子鍵結之同種材料， 金等。其中古、銘合金、翻、銘合金、欽或鈦合 可選擇為電鍵m化1層材料3A'3B之塗敷方法係 =二::;使該接合界面22不易產生氧化薄層 升—金屬板2A、2b的接合強度。 有該曲拌炫接'具之技術特點在於：藉由具 分佈拌頭12，除了賴提升對該熱 意方向進行多道-欠且=推擠作用之外’更兼具有沿任 擾拌頭12 接作業㈣效，而且該炫接 具兮、 &面111之間的結合強度增加，其大幅延 長该熔接攪拌頭12的使用壽命。 雖然本發明已利用上述較佳實施例揭示，然其並非 明，任何Μ此技藝者在不脫離本發明之精 =摩巳圍之内’相對上逑實施例進行各種更動與修改仍屬 f發1月所保護之技術範嘴，因此本發明之保護範圍當視後 附之_請專利範圍所界定者為準。 1378004 101年7月17 曰修正替換本 【圖式簡單說明】 第1圖：習知摩擦攪拌熔接過程示意圖。 第2圖：習知摩擦授拌溶接過程剖視圖。 第3圖：本發明較佳實施例之立體圖。 第4圖：本發明健實施例之料過程剖視圖。 (^)5圖：本發明較佳實施例進行多道次炫接示意圖 第6圖：本發明較佳實施例進行多道次轉示意 (二）。 ’以 θ 第7圖：本發，述實_崎多道魏接剖視圖。 【主要元件符號說明】 〔本發明〕 1 摩擦攪拌熔接工具 111結合面 13交界邊 金屬板 211重疊熱分佈區 Π 圓柱體 12 熔接攪拌頭 2A金屬板 21熱分佈區 22接合界面 3A杬氧化湾層材料 ·3Β抗氧化薄層材料 R 曲率半徑 h 深度 d 直徑 12 1378004 101年7月17曰修正替換本 〔習知〕 8 摩擦攪拌熔接工具 81 本體 82 探針 83 肩部 9A 金屬板 9Β 金屬板 91 接合界面 92 塑性區 Θ 後傾角 Η 深度 D 直徑U where h is the depth at which the fusion stirrer is vertically trapped relative to the surface of the fusion stirrer, and d is the diameter of the joint surface, = 6 * * 1378004. 701 July 7th revised replacement 11 is less than Or equal to two tenths of the diameter d. The dazzling mixing head 1 having the (four) radius R provides a pair of stirring and miscellaneous work, and can perform a long stroke and a multi-pass splicing operation. [°] [Embodiment] Other features and features of the present invention will become more apparent. The preferred embodiment of the present invention will be described in detail with reference to the following: As shown in Fig. 3, the preferred welding tool I of the present invention is mainly applied to the - friction welding device: friction, and the tool is set in the friction: ==, the heart = the machining axis can be __ _^ Two-axis sub-Zhao--rotation equipment rotates along χ, γ ^, and the friction is disturbed by the smashing workmanship, which is set to 1 by (4) rpm 令 令 △ △ △ / / / / / / / / / / / / / / Tools! Pairs - Works and objects; Docking:: The workpieces are rubbed and lion-joined, so that the two friction stir-welding workers of the present invention are added to the round body cylinders η and 111. The fusion stirrer 12 selects the core surface as the - joint surface on the joint surface η, and the #mm day is formed by the "limb forming method" corresponding to the surface (1), and the splicing_head 12 ==== completely covers the joint circumference The junction is formed with a boundary edge u. °, , ..., outside the cylinder u, the fusion stirrer head 12 is a vulture radius R', and the spherical crown is There is a curvature of curvature + light opposition in accordance with the following formula (7): (2) July 17th, 1997, correction and replacement of this (2) July, July, 1997, correction, replacement of this 8h, where h is the fusion joint 2A The surface is vertically trapped, relative to the -metal bond surface 111 (shown in Figure 4), and d is the straight "think of the diameter of the cylinder U". In the second step, according to the melting formula (2), the splicing and mixing head can be used to make the sleek R R by using the above-mentioned radius of curvature R to obtain a size of six according to the geometry, according to the contact surface. The second of the springs is the advantage of the processing. Yes - all belong to W ^ To use this friction to disturb the melter, 1 pair - metal plates 2A, 2B are lapped, and the slabs 2A, 2B are placed one on top of the other, the gold system pre-turns the metal-wearing full > , # 〃 板 2A is preferably selected as corrosion resistant or cadaveric plate, such as nickel, nickel alloy or non-ferrous steel, etc., the metal plate 2B is more than 2 疒 titanium, twisted metal plate, for example: Carbon steel, alloy steel or = some: the fixed-strong cylinder 11 forms a high-speed rotation state, and the surface of the metal plate is vertically extruded by the W: the selection head 12 generates high friction heat from the mixing head 丨2, It is possible to form the heat distribution zone 21^2=2B in the semi-molten state by the second-speed rotation of the second. The relationship between the two metal plates 2Α, °,,,, and the blade area is 22.22. Therefore, by the high-speed rotary interface interface 2丨_the two gold singer, 2^^12, the heat component #力的' and the stencil is used to impart the head plate 2A applied by the head 12, 2B forms a covered metal plate that is reliably joined. φ 7 7 7 7 7 〜 〜 被 被 被 被 被 被 被 被 被 被 被 被 被 被 被 被 被 被 被 被 被 被The strength of the demand, the pair and the resistance of the fusion stirrer 12 of the present invention can achieve many functions as described below: , having a face radius R, 1, when the fusion stirrer head 12 ^, the boundary edge The U system and the entire genus d the surface of the metal plate 2A can be completely immersed in the t phase, so that the top of the crown of the nucleus is left in the body u and the 'by the crown and Any point on the boundary edge 13 is greater than the center axis to make the ball-height difference. Therefore, "melting two: this. Forming the same arc and having ^ field. The fusion welding head of the fusion welding head 12 can be used in addition to the boundary edge 13 (4), the spherical crown can also be effective (4) the plate 2A The surface is phase-cut and iron-solid, which does improve the distribution of the 敎 distribution, and the w-turn vibration, so that the present invention can be used for the unstable operation of the stroke. The pass and length 2, the dazzling stir head η 士 入 入 Luo Luo, #, 111, so that the splicing «_ 12 is compiled in the joint surface is improved, which greatly increases the η,,, · · · & face 111 The combined area between the combined strength and the greater the strength of the lion head 12 and the joint surface (1), the fusion stirrer head 12 people, the dazzling stirrer head 12 from time to time can be used. According to this distribution area 21 , #/ "Fracture, advance* can continue to stir and push the hot material. In addition, due to the above-mentioned conventional slanting angle, the value of the slanting angle is between the 3rd and the sneakers. In the use of the above formula (1), there is a better welding quality, so that it is preferably less than or equal to the straightness. The second day correction of D replaces the attachment tool i, which is also acceptable for the present invention. When the friction stir of the present invention is one of the Japanese 〇 〇 5 沬 h h is less than or equal to the diameter d of the The friction mixing and dissolving tool 1 can also achieve the same excellent quality of splicing and splicing. The same two functions are used together with the county tool 8 , as shown in Figure 1, 弟 姥 1, 1, 5 and 6 In the case of multi-pass lap welding, the fused splice head 12 is spliced into a corner (such as the center of the surface of the surface of the 5th metal plate 2A); or, from the metal plate 2A Parallel to the gold "2A ^ and arrow along. Thereby, the metal plate 2: the other side of the surface of the metal plate 2A of the metal cover 2, the deformation amount of the cloth can be gradually moved from the side to the side. The second plate 22, the plate 2A is bulged and deformed, preventing The oxidized thin layer is generated, and the multi-pass splicing and splicing of the spurs are respectively generated by the slabs, so that the adjacent two-sided 211 lines reach the splicing and the slabs are more uniform. The material within zone 211 is capable of strength. More specifically 2 2 + mention _ joint interface 22 joint another, first soil, store a right" center - the center axis of the operation is U, the door has a shape, the axis is L2, the two central axis L], L2 has a distance P', the distance p is smaller than the diameter of the heart to the fifth, sixth and seventh figures, because the heat distribution area 21 reaches a semi-stun state of hundreds of degrees of rotation, and through Heat conduction, so that ^ _ 101 July 17 曰 modified to replace the two metal plates 2A, 2R *, especially the 3 housing uneven thermal expansion deformation and oxidation thin layer due to air: 22 22 deformation In view of the above, the present invention is applied to the laminated thin layer material 3A Γ3Β ^ metal plates 2A, 2B respectively coated with an antioxidant-friendly fish. Materials 3A and 3B are optional, for example, nickel, A, 2B, the same material that produces atomic bonding, gold, etc. Among them, Gu, Ming alloy, Fen, Ming alloy, Qin or Titanium can be selected as electric bond m 1 layer material 3A The coating method of '3B is two::; the bonding interface 22 is less likely to generate a thin layer of oxide - the bonding strength of the metal sheets 2A, 2b. 'The technical feature is that: with the distribution of the mixing head 12, in addition to the promotion of the hot direction of the multi-way - under and = push effect, and more with the cross-talking head 12 (4) effect, Moreover, the bonding strength between the splicing device and the surface 111 is increased, which greatly prolongs the service life of the fusion fused stirring head 12. Although the present invention has been disclosed using the above preferred embodiments, it is not intended to be The skilled person does not deviate from the essence of the present invention, and the various modifications and modifications of the embodiment are still protected by the technical model disclosed in January. Therefore, the scope of protection of the present invention is attached. _Please refer to the scope of patents. 1378004 July 17, 2011 曰Revised replacement [Simplified description of the drawing] Figure 1: Schematic diagram of the conventional friction stir welding process. Figure 2: Cross-sectional view of the conventional friction mixing process Fig. 3 is a perspective view of a preferred embodiment of the present invention. Fig. 4 is a cross-sectional view showing the process of the embodiment of the present invention. (^) 5: a schematic diagram of a multi-pass splicing diagram according to a preferred embodiment of the present invention. : The preferred embodiment of the invention is carried out The road turns to the indication (2). 'With θ Figure 7: The present, the actual _Saki multi-channel joint view. [Main component symbol description] [Invention] 1 Friction stir welding tool 111 joint surface 13 boundary metal Plate 211 overlaps heat distribution zone 圆柱 cylinder 12 weld head 2A metal plate 21 heat distribution zone 22 joint interface 3A 杬 oxidized bay layer material · 3 Β oxidation resistant thin layer material R radius of curvature h depth d diameter 12 1378004 July 17曰Replacement Replacement [General] 8 Friction Stir Welding Tool 81 Body 82 Probe 83 Shoulder 9A Metal Plate 9Β Metal Plate 91 Joint Interface 92 Plastic Zone Θ Back Dip Angle 深度 Depth D Diameter