201043390 六、發明說明： 【發明所屬之技術領域】 本發明係與綜合加工機的換刀臂有關，特別是指一種 兩端可夾持不同尺寸刀把的換刀臂結構。 【先前技術】201043390 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a tool changer of an integrated processing machine, and more particularly to a tool change arm structure in which both ends can hold different size cutters. [Prior Art]
由於綜合加工機能夠進行多種不同的加工處理，因此，該 綜合加工機都配置有一刀庫。而刀庫與綜合加工機主軸頭之間 的刀具主要係透過-換刀臂來進行扣刀、換刀等作業。請參閱 第1、2圖所示，目前的換刀臂結構設計，其兩端的扣合部⑴、 112尺寸無法改變，因此單—尺寸規格的換刀臂丨丨僅能針對 早-尺寸的刀把12進行扣刀作t，而此種賴刀臂結構設計 於實際使用情形仍具有須立即改善之缺陷： 為了因應該綜合加工機的多種加工方式，其刀庫（圖未示) 内具備了各種不同尺寸與型式的刀具13，爾著刀具13尺寸 的不同，供刀具13插置的刀把12尺寸亦隨之改變，因此，該 綜合加工機在加林業的叫必須以人工的方式進行更換換 刀臂11兩端驗刀部分（即扣合部m、⑽，才能進行扣刀、 彻等作業’也才能夠進行各種不同的加工作業，而此一狀 態，不僅造成換刀臂n的扣合部lu、112在更換上的繁讀， 亦造成閒靡換刀臂u的扣合㈣、112佔空_缺陷， 是以，由以上說日脚凸顯出該換刀臂η _性不足的缺陷。 【發明内容】 201043390 本發明之目的在於提供一種兩端可夾持不同尺寸刀把 的換刀臂結構，其主要將換刀臂兩端的夾爪結構設計成活 動式’使該換刀臂兩端可夾持不同尺寸的刀把，藉以提高 換刀臂的適用性。 緣是，為了達成前述目的，依據本發明所提供之/種 兩端可夾持不同尺寸刀把的換刀臂結構，其包括：一本 體，其具有相對的第一端部與第二端部；一第—夾爪組， 其係由第一左失件與第一右夾件所組成，且該第一左夾件 與第一右夾件前後端各具有扣合部與滑移部，該第一左夾 件與第一右失件係能夠相對滑動地設於該本體的第一端 部；一第一左齒條，其係設於該第一左夾件的滑移部；一 第一右齒條，其係設於該第一右夾件的滑移部；一第一齒 輪組，其係由相互嚙合第一左齒輪與第一右齒輪所組成， 該第一齒輪組係能夠樞轉地設於該本體的第—端部，且嗲 第-左齒輪與該第-左齒條喃合，該第—右齒輪與該第一 右齒條嗜合；—第二夾爪組，其係由第二左失件與第二右 夾件所組成，且該第二左夾件與第二右夾件前後端各且有 扣合部與輕部，料二核件鮮二錢件絲夠 滑動地設於該本體的第二端部；—第二左齒條，其係設於 该第二左夹件的滑移部；—第二右齒條，其係設於該第二 右夾件的’―第二齒輪組，其係由相互齡第二左 齒輪與第二右齒輪所組成，該第二齒輪_能夠樞轉地設 201043390 亥本體的第二端部，遞第二左齒輪與該第二左齒條嗜 一 第右N輪與該第二右齒條喷合；藉此，能夠分別 拴制°亥第、二夾爪組的第一、二左夾件或第一、二右夾 ，乍動使。亥第一夾爪組的第一左夾件與第一右夾件呈同 2罪近或分離，以及使該使該第二夾爪組的第二左夾件 二弟=右夾件呈同步的靠近或分離，藉以使該本體的第 ―、二端部可分別夾持不同尺寸的刀把。 之”有關本發明為達成上述目的，所_之技術、手段及其他 之功效’轉—較佳可行實施顺配合圖式詳細綱如后。 【實施方式】 百％配合參閱第3、4、5圖所示，本發明實施例所提名 的種兩端可爽持不同尺寸刀把的換刀臂結構，其主要〇 本體m爪組3G、—第—左齒條4卜 —右齒條42、一第一齒輪組50、一第二夾爪組60 :夾爪組7〇、-第二左齒條43、—第二右齒條44、以 —第二齒輪組80組成，其中： "亥本體20,其具有相對的第一端部2ι與第二端部22, ^亥第-端部21的端面向内横切有第—滑槽211，該第二 ，部22的端面向内橫切有第二滑槽221，另外，該第一端 部21具有第-長條孔212，該第二端部22具有第二長條 孔222，且該第-、二長條孔212、您分別與該第一、二 滑槽211、221相通。 201043390 該第一夾爪組30，其係由第一左夾件31與第一右夾 件32所組成，且該第一左夾件31與第一右夾件32前後端 各具有扣合部311、321與滑移部312、322，其中該第一 右夾件32的滑移部322具有第一凸柱33，該第一左夾件 31與第一右夾件32藉由其滑移部312、322而能夠相對滑 動地設於該本體20的第一端部21的第一滑槽211，且該 第一右夾件32的第一凸柱33沿該第一長條孔212滑動。 該第一左齒條41，其邊緣為齒狀的條狀物，該第一左齒 條41係沿該第一左夾件31的滑動方向設於該第一左夾件 31的滑移部312。 該第一右齒條42，其邊緣為齒狀的條狀物，該第一右齒 條42係沿該第一右夾件32的滑動方向設於該第一右夾件 32的滑移部322，且該第一右齒條42係與該第一左齒條 41呈上下排列狀。 該第一齒輪組50，其係由相互响合的第一左齒輪51 與第一右齒輪52所組成，其中該第一左齒輪51下段處具 有齒部511，而上段處具有外徑較該齒部511外徑為小的 轴部512，該第一右齒輪52上段處具有齒部521，而下段 處具有外徑較該齒部521外徑為小的軸部522，該第一左 齒輪51與第一右齒輪52的齒部511、521相互嚙合，該第 一齒輪組50係能夠枢轉地設於該本體20的第一端部21， 且該第一左齒輪51的齒部511與該第一左齒條41嚙合， 201043390 該第一右齒輪52的齒部521與該第一右齒條42嚙合。 該第二夾爪組60，其係由第二左夾件61與第二右夾 件62所組成，且該第二左夾件61與第二右夾件62前後端 各具有扣合部611、621與滑移部612、622，其中該第二 右夾件62的滑移部622具有第二凸柱63，該第二左夾件 61與第二右夾件62藉由其滑移部612、622而能夠相對滑 動地設於該本體20的第二端部22的第二滑槽221，且該 〇 第二右夾件62的第二凸柱63沿該第二長條孔222滑動。 該第二左齒條43，其邊緣為齒狀的條狀物，該第二左齒 條43係沿該第二左夾件61的滑動方向設於該第二左夾件 61的滑移部612。 該第二右齒條44，其邊緣為齒狀的條狀物，該第二右齒 條44係沿該第二右夾件62的滑動方向設於該第二右夾件 62的滑移部622，且該第二右齒條44係與該第二左齒條 Ο 43呈上下排列狀。 該第二齒輪組70，其係由相互°齒合的第二左齒輪71 與第二右齒輪72所組成，其中該第二左齒輪71下段處具 有齒部711，而上段處具有外徑較該齒部711外徑為小的 軸部712，該第二右齒輪72上段處具有齒部721，而下段 處具有外徑較該齒部721外徑為小的軸部722，該第二左 齒輪71與第二右齒輪72的齒部711、721相互D齒合，該第 二齒輪組70係能夠枢轉地設於該本體20的第二端部22， 201043390 且該第二左齒輪71的齒部711與該第二左齒條43嚙合， 該第二右齒輪52的齒部521與該第二右齒條44嚙合。 值得注意的是，本發明實施例中，該本體20第一端部 21與第二端部22分別具有第一動力源81與第二動力源 82，且該第一、二動力源81、82分別動連接帶動該第一右 夾件32的第一凸柱33與第二右夾件62的第二凸柱63。 以上所述即為本發明實施例各主要構件之結構及其組態 說明。 至於本發明實施例的作動方式及其功效說明如下，請複參 閱第3、5圖以及參閱第6、7、8圖。須先說明的是，由於該 組設於該本體20第一端部21的第一夾爪組30，與組設於 該本體20第二端部22的第二夾爪組60的作動方式相同， 因此，僅針對第一夾爪組30進行作動的說明。 首先，藉由該第一動力源81帶動該第一夾爪組30的 第一右夾件32朝該本體20的外侧移動，此時，設於該第 一右夾件32的第一右齒條42隨著連動，連動後的第一右 齒條42則帶動與其相互嚙合的第一右齒輪52順時針轉 動，同時，與該第一右齒輪52相互p齒合的第一左齒輪51 則逆時針轉動，而逆時針轉動的第一左齒輪51則帶動與其 相互鳴合的第一左齒條41朝該本體20的外侧移動，此時， 與該第一左齒條41相互連接設置的第一左夾件31則同樣 朝本體20的外側移動，據此，該第一左夾件31與第一右 201043390 爽件32則能夠同步的在該本體20白勺第-端部21相對位 移’且該第-左失件31與第一右夾件32係彼此相互遠離， 即同步的朝本體2〇的外側移動。 柒接著，虽朝本體20外側移動的第一左夾件31與第 -右夾件32 ’其扣合部311、321之間的距離符合預失持 刀把83的尺寸時，可控制該第一右夾件32朝該本體2〇Since the integrated processing machine can perform a variety of different processing, the integrated processing machine is equipped with a tool magazine. The tool between the tool magazine and the spindle head of the integrated processing machine mainly performs the work of fastening the knife and changing the tool through the tool change arm. Please refer to Figures 1 and 2 for the current design of the tool changer. The size of the snap-on parts (1) and 112 at both ends cannot be changed. Therefore, the single-size tool changer can only be used for the early-size tool holder. 12The knife is used for t, and the structure of the blade arm is designed to have the defects that need to be improved immediately in actual use: In order to meet the various processing methods of the integrated processing machine, the tool magazine (not shown) has various kinds of Different sizes and types of cutters 13, the size of the cutter 13 is different, and the size of the cutter 12 for inserting the cutter 13 is also changed. Therefore, the integrated processing machine must be manually replaced with the cutter. The tool inspection portion at both ends of the arm 11 (that is, the fastening portion m, (10) can perform the knives and the other operations can also perform various processing operations, and this state not only causes the engagement portion of the tool change arm n The familiar reading of lu and 112 in the replacement also caused the buckle (4) and 112 duty _ defects of the idle tool change arm u. Therefore, the above-mentioned foot of the foot highlights the defect that the change arm η _ is insufficient. SUMMARY OF THE INVENTION 201043390 The object of the present invention The utility model provides a tool change arm structure capable of clamping different size cutters at both ends, which mainly designs the jaw structure at both ends of the tool change arm to be movable, so that the cutter arms can clamp different sizes of the handles at both ends, thereby The applicability of the tool changer is improved. The edge is that, in order to achieve the foregoing objective, the tool change arm structure capable of holding different size handles at both ends according to the present invention includes: a body having an opposite first The first end portion and the second end portion; the first clamping member group is composed of the first left missing member and the first right clamping member, and the first left clamping member and the first right clamping member each have a buckle a first left clip and a first right knocker are slidably disposed at a first end of the body; a first left rack is attached to the first left clip a sliding portion of the piece; a first right rack is disposed on the sliding portion of the first right clamping member; and a first gear set is formed by intermeshing the first left gear and the first right gear The first gear set is pivotally disposed at a first end of the body, and the first-left gear and the first - a left rack merging, the first right gear is in contact with the first right rack; - a second jaw set consisting of a second left missing member and a second right clamping member, and the second The front and rear ends of the left and second right clamping members respectively have a fastening portion and a light portion, and the second core member of the second core member is slidably disposed at the second end of the body; the second left rack The second right rack is disposed on the second gear of the second right clip, and is connected to the second left gear of the second right a second right gear, the second gear_ can pivotally set a second end of the 201043390 body, and the second left gear and the second left tooth are a right N wheel and the second right tooth The spray is sprayed; thereby, the first and second left clamp members or the first and second right clamps of the Hehai and the second jaw group can be respectively clamped, and the first left clamp of the first jaw group of the Hai. The piece is adjacent or separated from the first right clamping member, and the second left clamping member and the right clamping member of the second clamping member are brought close to or separated from each other, thereby making the body ―, two ends can Do knife holding different sizes. With regard to the present invention, in order to achieve the above object, the techniques, means, and other functions of the present invention are preferably implemented in the following manner. [Embodiment] Refer to Figures 3, 4, and 5 for 100% cooperation. As shown in the figure, the tool-removing arm structure of the different types of knife handles can be held at both ends of the embodiment of the present invention, and the main body is the main body m-claw group 3G, the first-left rack 4b-the right rack 42 and one The first gear set 50, the second jaw set 60: the jaw set 7〇, the second left rack 43, the second right rack 44, and the second gear set 80, wherein: " The body 20 has opposite first end portions 2ι and second end portions 22, and the end faces of the second end portions 21 are transversely cut with a first sliding groove 211, and the ends of the second portion 22 are facing inwardly. The first end portion 21 has a first long hole 212, the second end portion 22 has a second long hole 222, and the first and second long holes 212, The first and second sliding grooves 211 and 221 are respectively connected to the first and second sliding grooves 211 and 221. The first clamping device 30 is composed of a first left clamping member 31 and a first right clamping member 32, and the first left clamping member 31 is formed. The front and rear ends of the first right clamping member 32 have fastening portions 311 and 321 and sliding portions 312 and 322, wherein the sliding portion 322 of the first right clamping member 32 has a first protruding post 33, and the first left clamping member The first right clamping member 32 is slidably disposed on the first sliding slot 211 of the first end portion 21 of the body 20 by the sliding portion 312, 322 thereof, and the first right clamping member 32 is A protrusion 33 is slid along the first elongated hole 212. The first left rack 41 has a tooth-like strip, and the first left rack 41 is slid along the first left clip 31. The direction is disposed on the sliding portion 312 of the first left clamping member 31. The first right rack 42 has a toothed strip at the edge thereof, and the first right rack 42 is along the first right clamping member 32. The sliding direction of the first right rack 32 is arranged in the vertical direction of the first left rack 41. The first gear set 50 is arranged by the first gear rack 50. The first left gear 51 and the first right gear 52 are mutually coupled, wherein the first left gear 51 has a tooth portion 511 at a lower portion thereof, and the upper portion has a shaft portion having an outer diameter smaller than an outer diameter of the tooth portion 511. 512, the first right tooth The upper portion of the wheel 52 has a tooth portion 521, and the lower portion has a shaft portion 522 having an outer diameter smaller than the outer diameter of the tooth portion 521. The first left gear 51 meshes with the tooth portions 511 and 521 of the first right gear 52. The first gear set 50 is pivotally disposed on the first end portion 21 of the body 20, and the tooth portion 511 of the first left gear 51 meshes with the first left rack 41, the first right gear of the 201043390 The tooth portion 521 of the 52 is engaged with the first right rack 42. The second jaw group 60 is composed of a second left clip 61 and a second right clip 62, and the second left clip 61 The front and rear ends of the second right clamping member 62 have fastening portions 611 and 621 and sliding portions 612 and 622, wherein the sliding portion 622 of the second right clamping member 62 has a second protruding post 63, and the second left clamping member The second right clamping member 62 is slidably disposed on the second sliding slot 221 of the second end portion 22 of the main body 20 by the sliding portion 612, 622, and the second right clamping member 62 The second protrusion 63 slides along the second elongated hole 222. The second left rack 43 has a tooth-shaped strip, and the second left rack 43 is disposed on the sliding portion of the second left clip 61 along the sliding direction of the second left clip 61. 612. The second right rack 44 has a tooth-shaped strip, and the second right rack 44 is disposed on the sliding portion of the second right clip 62 along the sliding direction of the second right clip 62. 622, and the second right rack 44 is arranged up and down with the second left rack 43. The second gear set 70 is composed of a second left gear 71 and a second right gear 72 which are coupled to each other, wherein the second left gear 71 has a tooth portion 711 at a lower portion and an outer diameter portion at the upper portion. The outer diameter of the tooth portion 711 is a small shaft portion 712. The second right gear 72 has a tooth portion 721 at an upper portion thereof, and the lower portion has a shaft portion 722 having an outer diameter smaller than an outer diameter of the tooth portion 721. The second left portion The gears 71 and the teeth 711, 721 of the second right gear 72 are D-toothed to each other. The second gear set 70 is pivotally disposed at the second end 22 of the body 20, 201043390 and the second left gear 71 The tooth portion 711 is meshed with the second left rack 43 , and the tooth portion 521 of the second right gear 52 meshes with the second right rack 44 . It is to be noted that, in the embodiment of the present invention, the first end portion 21 and the second end portion 22 of the body 20 respectively have a first power source 81 and a second power source 82, and the first and second power sources 81 and 82 The first protrusions 33 of the first right clamping member 32 and the second protrusions 63 of the second right clamping member 62 are respectively movably connected. The above description is the structure and configuration description of each main component of the embodiment of the present invention. The mode of operation and the effect of the embodiment of the present invention are described below. Please refer to Figures 3 and 5 and refer to Figures 6, 7, and 8. It should be noted that, since the first jaw group 30 disposed on the first end portion 21 of the body 20 is operated in the same manner as the second jaw group 60 disposed on the second end portion 22 of the body 20 Therefore, only the description of the actuation of the first jaw group 30 is performed. First, the first right clamping member 32 of the first clamping jaw group 30 is moved toward the outside of the body 20 by the first power source 81. At this time, the first right tooth of the first right clamping member 32 is disposed. When the strip 42 is interlocked, the linked first right rack 42 drives the first right gear 52 that meshes with it to rotate clockwise, and the first left gear 51 that is p-coupled with the first right gear 52 is Turning counterclockwise, the first left gear 51 rotating counterclockwise drives the first left rack 41 that reciprocates with each other to move toward the outside of the body 20, and at this time, is connected to the first left rack 41. The first left clamping member 31 is also moved toward the outside of the body 20, whereby the first left clamping member 31 and the first right 201043390 cooling member 32 are synchronously displaceable at the first end portion 21 of the body 20. And the first left member 31 and the first right member 32 are separated from each other, that is, moved to the outside of the body 2〇 in synchronization. Then, although the distance between the first left clip 31 and the right-side clip 32' that are moved toward the outside of the body 20 is such that the distance between the engaging portions 311 and 321 matches the size of the pre-missing blade 83, the first controllable A right clip 32 faces the body 2〇
的内側移動’該第—右夹件32則藉由第—右齒條处、第 一右齒輪52、第—左齒輪5卜第-左齒條41、以及第— 左夾件31等構件的彼此連結關係，而與上述相同的作動 式即透過逆時針轉動的第一右歯輪52嗔合帶動第—左 輪51成順時針轉動，而最終使該第-左夾件31與第: 夹件32係彼此相互靠近，同步的朝本體2〇的内側移動。 最後，彼此相互靠近移動的第-左夹件31與第一右 件32的扣合部311、321即夾持該刀把83，而完成扣_ 動作。 巧 猎此’本發明能夠分別控制該第―、UU且30、6 的第-、二左夾件31、61或第一、二右夾件3Η2作動 使該第一夾爪組30的第-左夾件31與第一右夾件32呈间 步的靠近或分離，以及使該第二夾爪組6。的第二左央： 61與第二右夾件62呈同步 ^ 又件 ^的罪錢分離，藉錢該本 2〇的第一、二端部21、22可分別夾持不同尺寸的刀把S3、 84，提高換刀臂的適用性。 201043390 值得說明的是’請複參閱第3、4圖所示，由於該本體 20的第一端部21具有第一長條孔212，該第二端部22具 有第二長條孔222，且該第一右夾件32的第一凸柱⑽沿 該第一長條孔212滑動，該第二右夾件的第二凸柱63 沿該第二長條孔222滑動，因此，該第一長條孔212能夠 限制該第一凸柱33滑動地距離’該第二長條孔222能夠限 制5玄第二凸柱63滑動地距離，藉以限制該第一左夾件31 與第-右夾件32、以及該第二左夾件61與第二右夹件⑽ 彼此相互靠近以及相互遠離的距離。 ‘上所述’此實施例及圖示僅為本發明之較佳實施例而 已，=不能以之限定本發明實施之範圍，即大凡依本發明申請 專利範圍所作之鱗與轉姻屬本發明專利涵蓋之範 10 201043390 【圖式簡單說明】 f1圖係習知換刀臂夾刀狀態的上視示意圖。 第—2圖係習知換刀f失刀狀態的側視示意圖。 f3圖係本發明的上視示意圖。The inner side movement 'the first-right clamp member 32 is composed of a first-right rack, a first right gear 52, a first-left gear 5b-left-left rack 41, and a first-left clip 31. Connected to each other, and the same action as described above, that is, the first right turn wheel 52 rotated counterclockwise drives the first left wheel 51 to rotate clockwise, and finally the first left member 31 and the first: The 32 series are close to each other and move synchronously toward the inner side of the body 2〇. Finally, the first left member 31 moved closer to each other and the engaging portions 311, 321 of the first right member 32 hold the holder 83 to complete the buckle operation. The present invention is capable of separately controlling the first and second left members 31, 61 or the first and second right members 3, 2 of the first, UU and 30, 6 to actuate the first jaw group 30 - The left clamping member 31 is spaced or separated from the first right clamping member 32 in a stepwise manner, and the second clamping jaw set 6 is provided. The second left center: 61 is synchronized with the second right clamping member 62. The sin money is separated from the second piece. The first and second end portions 21 and 22 of the second cymbal can respectively hold the different sizes of the knife handle S3. , 84, improve the applicability of the tool change arm. 201043390 It is worth noting that, as shown in Figures 3 and 4, since the first end portion 21 of the body 20 has a first elongated hole 212, the second end portion 22 has a second elongated hole 222, and The first protrusion (10) of the first right clamping member 32 slides along the first elongated hole 212, and the second protruding post 63 of the second right clamping member slides along the second elongated hole 222. Therefore, the first The elongated hole 212 can limit the sliding distance of the first protruding post 33. The second elongated hole 222 can limit the sliding distance of the 5 second second protruding post 63, thereby limiting the first left clamping member 31 and the right-left clamping member. The member 32, and the distance between the second left clip 61 and the second right clip (10) are close to each other and away from each other. The above embodiments and the drawings are only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the scales and the attributions according to the scope of the patent application of the present invention belong to the present invention. Patent Coverage 10 201043390 [Simple description of the diagram] The f1 diagram is a schematic top view of the state of the conventional tool changer. Fig. 2 is a side view showing a state in which the knife is lost. The f3 diagram is a schematic top view of the present invention.
G G圖圖顯示該本體内部各構件的狀態。 齒條結合的麟。 與齒條結合的示意圖，顯示齒輪組與 第7圖係本二顯示該第一夾爪_啟的狀態。 第8圖係本發明夹合= 目圖’顯示該第一夾爪組夾合的狀態。 同尺寸刀把雜態。、'現7’顯示該換刀臂兩端夾持不 【主要元件符號說明】 換刀臂11 刀具13 本體2G 第一滑槽211 第二端部22 弟二長條孔222 第一夾爪組30 扣合部311 第一右夾件32 滑移部322 扣合部111、112 第一端部21 第一長條孔212 第二滑槽221 第一左夾件31 滑移部312 扣合部321 第一凸柱33 201043390 第一左齒條41 第一右齒條42 第二左齒條43 第二右齒條44 第一齒輪組50 第一左齒輪51 齒部511 軸部512 第一右齒輪52 齒部521 軸部522 第二夾爪組60 第二左夾件61 扣合部611 滑移部612 第二右夾件62 扣合部621 滑移部622 第二凸柱63 第二齒輪組70 第二左齒輪71 齒部711 軸部712 第二右齒輪72 齒部721 軸部722 第一動力源81 第二動力源82 刀把83 刀把84 12The G G diagram shows the state of the various components inside the body. The rack is combined with the lining. A schematic view in combination with the rack, showing the gear set and Fig. 7 shows the state of the first jaw. Fig. 8 is a view showing the state in which the first jaw group is sandwiched by the present invention. Same size cutter handles. , 'Now 7' shows that the tool changer is not clamped at both ends. [Main component symbol description] Tool change arm 11 Tool 13 Body 2G First chute 211 Second end 22 Younger long hole 222 First gripper set 30 fastening portion 311 first right clamping member 32 sliding portion 322 fastening portion 111, 112 first end portion 21 first elongated hole 212 second sliding groove 221 first left clamping member 31 sliding portion 312 fastening portion 321 first stud 33 201043390 first left rack 41 first right rack 42 second left rack 43 second right rack 44 first gear set 50 first left gear 51 tooth portion 511 shaft portion 512 first right Gear 52 tooth portion 521 shaft portion 522 second jaw group 60 second left clip 61 snap portion 611 slip portion 612 second right clip 62 snap portion 621 slip portion 622 second stud 63 second gear Group 70 second left gear 71 tooth portion 711 shaft portion 712 second right gear 72 tooth portion 721 shaft portion 722 first power source 81 second power source 82 knife handle 83 knife handle 84 12