M376367 五、新型說明： 【新型所屬之技術領域】 本創作係關於一種台鋸 【先前技術】 美國公告專利第6,578,460號專利揭示了 鑛，該台鑛包括-工作臺，-圓鑛片，該圓鑛片設= 工作臺下方，並延伸穿出該工作臺的上工作臺面、: 刀’該劈刀設於該圓鑛片後方，一鑛片講 、 身 仃四杆機構設於該劈刀上，該台_包括設於干 =的:提升件，該提升件通過—連杆活動連接二= m田Γ刀1^件時，該提升件貼合於工作臺面上，該 邊罩抵#於該提升件上。#操作人員要㈣ = =圓鑛片方向推進卫件’隨著巧的推進，該提:件^ 向上頂起’進而該護罩向上平動。 牛被 當操作人員在使用該台鋸時，往往不易察覺到取了 厚度可能超過圓鑛片所能切割範圍的工件 被向後推進了-段距C’通常工件 作人員才會發紅件❹J 了—疋長度的胸後，操 被完全鑛切，此時不回鑛片的切割範圍，而無法 鑛片，並重新調整圓鑛=機’然後再把工件退出圓 工件完全鑛斷，如此^伸紅作臺的高度，直到能把 一部分的情況下，2作非f不方便，而且在工件切割 如工件’對操作人員來說也不太安 3 使操作人員更加費時， 全。另外由於工作程序的增加， 大大降低了工作效率。 丹有 高度後，2 同厚度反復職圓鋸片的 開始進㈣㈣作後，才能發 後，將备非法"全鋸斷’需要重新調整圓鋸片 Ϊ擾以費時’而且容易給操作人員帶來不必要的 【新型内容】 題·提供一種操作方便的 件厚度太厚而無法被圓鋸 題所採用的技街方案為·· 本創作所要解決的技術問 台鑛，該台鋸可有效防範因工 片元全鋸斷的情況發生。 本創作為解決上述技術問 一種台鋸，該台鋸包括： 作室，具有放置工件的工作臺面； 一基座，設於該工作臺卞方， 一 且该基座具有内腔； _片’位於該基座的内腔，且 出該工作臺的工作臺面； 乃之狎芽 =跟刀板，可操作的隨同該圓鑛片—起上升或下降； 一護罩’活動連接於該跟刀板上，且該護罩位於該 圓鑛片上方； 其中： 該跟刀板上設有-止擒機構，該護罩上設有一配接 裝置’該配接襄置可選擇的與該止擋機構配接，從而限 M376367 制該護罩繼續向上運動。 在本創作之一實施例中，該護罩相對於該跟刀板可 平動。 在本創作之一實施例中，該護罩與該跟刀板之間通 過平行四杆機構連接 在本創作之一實施例中，該平行四杆機構包括第一 對連杆、第二對連杆。 在本創作之一實施例中，當該配接裝置可選擇的與 該止擋機構配接時，該護罩下邊緣至工作臺面的距離大 於或等於圓鋸片頂緣至工作臺面的距離。 在本創作之一實施例中，該護罩下邊緣至工作臺面 的距離與圓鋸片頂緣至工作臺面的距離的高度差在 10mm(毫米）以内。 在本創作之一實施例中，該止擋機構固定設置於跟 刀板上。 在本創作之一實施例中，該止擋機構為柱銷。 在本創作之一實施例中，該止擋機構與跟刀板一體 成型。 在本創作之一實施例中，該配接裝置為固定設置於 護罩上的配接塊。 與現有技術相比，本創作採用在跟刀板上設置止擋 機構，在護罩上設置配接裝置，當切割因工件的厚度太 厚而無法被圓鋸片所鋸斷時，隨著工件的向前推動，護 罩向上運動，當護罩向上運動到一定高度時，上述配接 5 裝置與止揚機構配接，從而阻止護罩繼續向上運動，由 於上述濩罩的土擋，上述工件不能向前推進，從而本創 作通過羞罩來避免因工件的厚度太厚而無法被圓雜片 所鋸斷，防止了工件被開始鋸切操作後才發現無法完全 鋸斷’該台鋸使得工件被鋸切到之前，操作者就能發現 工件是否超過了台鋸的鋸切能力，因此該台鋸操作非常 方便，鋸切效率較高，而且通過護罩阻止工件的推進， 結構簡單’製造成本較低。 【實施方式] 為了讓本創作之上述及其他目的、特徵、優點能更 明顯易懂，下文將特舉本創作較佳實施例，並配合所附 圖式’作詳細說明如下。 請參照第丨圖至第6圖所示，本創作第一實施例之 σ鋸主要包含一工作臺U，一基座，一基座I]設於 該工作室11下方，用於支撐該工作臺u，該基座13 籲 具有中空的内腔131和一前面板132, -圓鑛片15設 於中:的該内腔131巾’並延伸穿出該工作臺η，這 樣該圓鑛片15可用於切割放置於該工作臺11的-工作 宜面111上的工件53。另外該圓鋸片15上方設置有一 護罩π，防止操作者接觸到該圓鋸片15。 該前面板132上設有一弧形長孔1321，—旋轉手輪 19設於該基座13的前面板132外侧，用於調節該圓鋸 片15伸出該工作臺面111的高度，從而適應不同的切. 割要求。 該旋轉手輪19設於一手輪軸21上，該手輪軸21 從51形長孔1321穿出該前面板132，該手輪軸21螺紋 連接於一滑塊23上’該滑塊23滑動設置於一旋擺件 25上的滑槽251上’該旋擺件25枢轉設於一擺動件27 上’該擺動件27通過一橫杆29柩轉設於該工作臺11 或該基座13上。 一電機（未圖示）固定設置於該旋擺件25上，該圓 鑛片15穿設於電機的輸出軸上，由該電機驅動該圓鑛 片25旋轉，從而切割工件。 該台鋸100還包括一跟刀板31，本實施例中，該跟 刀板31設於一壓板33於第一連杆35之間，一跟刀板 鎖緊機構37把該跟刀板31鎖緊於一第一連杆35上， 第一連杆35的中間部可轉動的穿設於該電機輸出軸 上，第二連杆39具有兩端，其中一端可轉動的連接於 該擺動件27上，另一端連接於該第一連杆％上。 由於上述第一連杆35和第二連杆39的驅動，當調 節該圓鋸片15上升或下降時，該跟刀板31可與圓鋸片 15 一起上升或下降。 如第3圖至第7圖所示，該護罩17活動連接於該跟 刀板Μ上，本較佳實施例中，該護罩17相對於訪跟刀M376367 V. New description: [New technical field] This is a kind of table saw [Prior Art] US Patent No. 6,578,460 discloses a mine, which includes a workbench, a round ore, the circle The ore piece is set below the workbench and extends out of the upper work surface of the workbench: the knife' is set behind the round ore piece, and a piece of rock is said to be placed on the file. , the station _ includes: a lifting member disposed on the dry =, the lifting member is connected to the work surface by the connecting rod movable connection 2 = m Γ 1 1 ^, the side cover is offset On the lifting piece. #操作人要(四) = = The direction of the ore piece propelling the guard ‘ With the advancement of the skill, the piece: the piece ^ is lifted up' and the guard is moved upwards. When the cow is used by the operator, it is often difficult to perceive that the workpiece whose thickness may exceed the cutting range of the round ore is pushed backwards - the distance from the C' is usually the workpiece will be red. - After the length of the chest, the operation is completely cut. At this time, the cutting range of the ore piece is not returned, and the ore piece cannot be re-adjusted, and the round ore is replaced. Then the workpiece is completely removed from the round workpiece. The height of the red table is not convenient until 2 parts of the case, and the cutting of the workpiece as the workpiece 'is not too safe for the operator 3 makes the operator more time consuming. In addition, due to the increase in work procedures, work efficiency is greatly reduced. After Dan has a height, 2 starts with the thickness of the repetitive round saw blade (4) (4), after the release, it will be prepared for illegal "full sawing' needs to re-adjust the circular saw blade harassment to take time and easy to bring to the operator Unnecessary [new content] The problem is to provide a technically convenient solution for the thickness of the piece that cannot be used by the circular saw. The technology to be solved by this creation, the table saw can effectively prevent Due to the fact that the work piece is completely sawn off. In order to solve the above problems, the present invention provides a table saw comprising: a working chamber having a work surface on which the workpiece is placed; a base disposed on the side of the work surface, and the base has an inner cavity; Located in the inner cavity of the base, and out of the work surface of the workbench; the buds = the blade, operable to rise or fall along with the round ore; a shield 'actively connected to the knife On the board, and the shield is located above the round ore piece; wherein: the blade is provided with a stop mechanism, and the cover is provided with a matching device, the matching device is selectable and the stop The mechanism is mated so that the M376367 can continue to move upwards. In one embodiment of the present invention, the shield is translationally movable relative to the blade. In an embodiment of the present invention, the shield and the blade are connected by a parallel four-bar mechanism in an embodiment of the present invention, the parallel four-bar mechanism including a first pair of links and a second pair Rod. In one embodiment of the present invention, when the mating device is selectively engageable with the stop mechanism, the distance from the lower edge of the shroud to the work surface is greater than or equal to the distance from the top edge of the circular saw blade to the work surface. In one embodiment of the present invention, the height difference between the lower edge of the shield and the work surface and the distance from the top edge of the circular saw blade to the work surface is within 10 mm (mm). In one embodiment of the present invention, the stop mechanism is fixedly disposed on the blade. In one embodiment of the present creation, the stop mechanism is a stud. In one embodiment of the present invention, the stop mechanism is integrally formed with the blade. In one embodiment of the present invention, the mating device is a mating block that is fixedly disposed on the shroud. Compared with the prior art, the present invention adopts a stop mechanism on the blade, and a matching device is arranged on the shield. When the cutting is too thick to be sawed by the circular saw blade, the workpiece Pushing forward, the shield moves upwards, and when the shield is moved upward to a certain height, the above-mentioned mating device 5 is mated with the lifting mechanism, thereby preventing the shield from continuing upward movement, and the workpiece cannot be moved due to the soil block of the hood Pushing forward, the creation avoids the fact that the thickness of the workpiece is too thick to be sawn by the round piece, preventing the workpiece from being sawed and not completely sawn. Before sawing, the operator can find out whether the workpiece exceeds the sawing ability of the table saw. Therefore, the table saw is very convenient to operate, the sawing efficiency is high, and the workpiece is prevented from being pushed by the shield. The structure is simple and the manufacturing cost is relatively high. low. [Embodiment] The above and other objects, features and advantages of the present invention will become more apparent and understood. Referring to FIG. 6 to FIG. 6 , the σ saw of the first embodiment of the present invention mainly includes a work table U, a base, and a base I] disposed under the working chamber 11 for supporting the work. a base u, the base 13 has a hollow inner cavity 131 and a front panel 132, and the circular ore piece 15 is disposed in the inner cavity 131 and extends out of the table n, so that the ore piece 15 can be used to cut the workpiece 53 placed on the working surface 111 of the table 11. Further, a shield π is disposed above the circular saw blade 15 to prevent the operator from coming into contact with the circular saw blade 15. The front panel 132 is provided with an arcuate long hole 1321. The rotating hand wheel 19 is disposed outside the front panel 132 of the base 13 for adjusting the height of the circular saw blade 15 extending from the work surface 111. Cutting. Cutting requirements. The rotating hand wheel 19 is disposed on a hand wheel shaft 21. The hand wheel shaft 21 passes through the front panel 132 from the 51-shaped long hole 1321. The hand wheel shaft 21 is screwed onto a slider 23. The slider 23 is slidably disposed on the On the sliding groove 251 of the rotary member 25, the rotary member 25 is pivotally disposed on a swinging member 27. The swinging member 27 is pivotally disposed on the table 11 or the base 13 via a crossbar 29. A motor (not shown) is fixedly disposed on the rotary member 25. The circular ore plate 15 is disposed on an output shaft of the motor, and the circular ore piece 25 is driven to rotate by the motor to cut the workpiece. The table saw 100 further includes a blade 31. In this embodiment, the blade 31 is disposed between a platen 33 and a first link 35. A blade locking mechanism 37 connects the blade 31. Locked on a first connecting rod 35, the middle portion of the first connecting rod 35 is rotatably disposed on the output shaft of the motor, and the second connecting rod 39 has two ends, one end of which is rotatably connected to the swinging member On the 27th, the other end is connected to the first link %. Due to the driving of the first link 35 and the second link 39 described above, the blade 31 can be raised or lowered together with the circular saw blade 15 when the circular saw blade 15 is adjusted to rise or fall. As shown in Figures 3 to 7, the shield 17 is movably coupled to the turret, and in the preferred embodiment, the shield 17 is relative to the keeper
該跟刀叛31做樞轉運動， 入彳、只岍知，該 於該跟刀板31上，從而相對於 ’在此就不再做詳細贅述。 本較佳實施例中，該 接於該跟刀板31 μ Β 个仃四杆機構連 17、一第二辦糾心為—第—對連杵41、該護罩 構。 ，、忒跟刀板31構成平行四連杆機 該第-對連杵41的第4 轉的連接於該講置, 鐲軸45可樞 412通過1轴47 該第-對連杆41的第二端 該第二轉的連紗該跟刀板Μ上。 轉的連接 432通過-銷^】 該第一對連杆43的第二端 本較佳轉的連接於該跟刀板31上。 λ &例申，為 49干涉，該第_ ^免衫一對連杆W與銷軸 同樣為避免該第-對的中間部設有開口槽413 ’ Μ ^ + 對連杆43與銷軸47干涉，該第一對 連杆43的中間部設有開 卞/該弟一對 該護罩17罝古筮," 的第二側部，該侧部171和與第一側部⑺相對 的兩側，同樣該第二對$ 41對稱的設於該跟刀板31 的兩側，且為避免第-對連杆;的設於跟刀板31 涉，本較佳實施例中，相 "弟一對連杆43干 連杆43比第—對連杆4ι更:=板”來說’第二對 第二對連杆43位於第：近跟刀板31，也就是說， 另外該第-對連杆二杆4:的内侧。 17的第-側部m和第二側部連杆43均位於護罩 該第一對連杆41盘第 之間。 —士連杆43的長度相等，銷 M376367 轴45至49之間的安農距離與錦轴47至5i之間的距離 相等。 當台鑛_未切割工件時，該護罩17處於釋放狀 態’此時第-對_41與第二對連杆43處於收折狀 態，銷軸49位於該第—對連杆Μ的開口槽化中，鎖 轴47位於該第二對連杆43的開口槽4幻中，另外由於 護罩17的第—㈣171比第二側部172的高度尺寸 大’因此此時第—側部171抵靠於工作臺卩的工作臺 面111上，第二側部172與工作* 距離。 作室面m之間保持一定 如第5圖所示，待切割工 切割能力範圍内，當要切則 ：f寸在°鋸100的 放置於該工作臺面m上。，朝！ :3化，首先把工件53 、# 朝者圓鑛片15的方向向後 二:Γ隨著工件53的推進，_17被抬起 上樞^41^14杆43相對於該跟刀板31向 =護罩17的第—侧部171抵靠於工 而正吊切割工件53。 進 如第6圖所示，採+含丨 寺切副工件厚度尺寸超過台鋸1〇〇 ===力範n厚度為H，該圓 =工作臺面川的距離為 Η大於距離u，但由 07与度 了台鑛_此時的不知道讀π已經超過 切割順序操作，首先：因此#作者同樣按正常的 推進工件53'，隨著工H Μ 15的方向向後 3的推進，護罩17不斷的向 9 遠離工作臺面111的方向運動。 本較佳實施例中，該跟刀板31上設置有一止擋機構 55，該護罩17的第一側部171的内側設置有配接裝置 57，隨著工件53'的不斷向前推進，護罩17被不斷抬 高，直到該配接裝置57與該止擋機構55相配接，從而 限制了護罩17繼續向遠離該工作臺面111的方向運 動，此時護罩17處於最高處的極限位置，護罩17的下 邊緣至工作臺面111之間的距離為L2，本較佳實施例 中，L2大致等於L1，這樣超過台鋸切割能力L1的工 件會被護罩Π阻擋，從而工件53'不能繼續向前推進， 因此工件53'不會被圓鋸片15鋸切到，防止了工件被圓 鋸片15鋸切一部分後，才發現工件不能被鋸斷，這樣 就需要先關停台鋸，等圓鋸片停止旋轉後，再退回工 件，然後旋轉手掄，調高圓鋸片，等台鋸的切割能力能 滿足鋸切工件後，再開始進行鋸切工作，但由於調節圓 鋸片高度時，不知道什麼時候調節好，因此很可能需要 反復不斷的調節和試切割，使鋸切操作非常不方便，不 但浪費工時，降低了工作效率。而且也非常容易造成操 作人員煩躁。 本較佳實施例中，當工件53'被該護罩17阻擋，無 法向前推進時，只需要關掉台鋸100，重新調整圓鋸片 15的高度即可。 當然，當護罩17處於最高處的極限位置時，護罩 17的下邊緣至工作臺面111之間的距離L2也可設置成 M376367 - 大於圓鋸片15頂緣至工作臺面ill的距離L1。另外， L2、與L1之間的高度差可維持在麻㈣内，這樣可綠 保被鋸切後的工件僅需要略施外力即可分離，當然，L 2 與L1之間的高度差設置得越小越好。 再者，當護罩17處於最高處的極限位置時，護罩 Π的下邊緣至工作臺面ηι之間的距離L2也可設置成 小於圓鑛片15頂緣至工作臺面ln的距離u。這樣可 馨條讀能被圓則15完全_ ’踐•掉了圓鑛 片=小二部分的切割能力，同樣，L2與u之間的高度 差設置得越小越好。這樣能保證圓鑛片15以最大的切 割能力切割工件。 該止擋機構55固定設置於該跟刀板31上，如本領 域普通技術人員所知，該止擋機構55也可㈣設置於 該跟刀板31上，本較佳實施例中，該止擔機構％為柱 銷，當然該止擋機構55也可設置成止擋塊，也可與跟 i - 刀板31 一體成型等，在此不再做詳細贅述。 本較佳實施例中’該配接裝置57為固定設置於護罩 17上的配接塊。 雖然本創作已轉佳實施例揭露，#:其並非用以限 制本創作，任何熟習此項技藝之人士，在不脫離本創作 之精神=範圍内’當可作各種更動與修飾，因此本創作 之保護範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 M376367 第1圖：本創作之台鋸的立體圖。 第2圖：本創作之台鋸的立體圖，此時台鋸去除了基 座，護罩處於剖視狀態。 第3圖：本創作之台鋸的連杆與跟刀板的立體示意圖。 第4圖：本創作之台鋸的主視圖，此時台鋸未切割工 件，護罩處於抵靠於工作臺面上的釋放狀態。 第5圖：本創作之台鋸的主視圖，此時工件處於待切割 狀態，且工件厚度位於台鋸的切割能力範圍内。 第6圖：本創作之台鋸的主視圖，此時工件處於待切割 狀態，且工件厚度超過台鑛此時的切割能力範圍内，護 罩處於最高處的極限位置。 第7圖：本創作之台鋸的護罩、連杆結構及跟刀板的右 視圖，此時護罩處於最高處的極限位置，配接裝置與止 擔機構配接。 【主要元件符號說明】 11 工作臺 111 工作臺面 13 基座 131 内腔 132 前面板 1321 弧形長孔 15 圓鋸片 17 護罩 171 第一側部 172 第二侧部 19 旋轉手輪 21 手輪軸 23 滑塊 25 旋擺件 251 滑槽 27 擺動件 12 M376367 29 橫杆 31 跟刀板 33 壓板 35 第一連杆 37 跟刀板鎖緊機構 39 第二連杆 41 第一對連杆 411 *第一端 412 第二端 413 開口槽 43 第二對連杆 431 第一端 432 第二端 433 開口槽 45、 47銷轴 49 ' 51銷軸 53、 53'工件 55 止擋機構 57 配接裝置 L1、 L2距離 Η 工件厚度 100 台鑛 13The knives rebellion 31 do pivotal movements, and they only know that they should be on the blade 31, so that they will not be described in detail here. In the preferred embodiment, the blade is connected to the blade plate 31 μ Β four-bar mechanism 17 , and the second device is — - the pair of ports 41 , the shield structure. , the cymbal plate 31 constitutes a parallel four-bar linkage machine. The fourth turn of the first-to-one link 41 is connected to the locating, and the brace axis 45 is pivotally 412 through the one-axis 47. The second end of the second twisted yarn is tied to the blade. The rotary connection 432 passes through the pin. The second end of the first pair of links 43 is preferably connected to the blade 31. λ &example, for 49 interference, the first pair of links W and the pin are also provided with an opening groove 413 ' Μ ^ + for the middle portion of the first pair to avoid the link 43 and the pin Interference 47, the middle portion of the first pair of links 43 is provided with a second side portion of the opening/the pair of the shields, and the side portion 171 is opposite to the first side portion (7) On both sides of the same, the second pair of $41 is symmetrically disposed on both sides of the blade 31, and in order to avoid the first pair of links; disposed in the blade 31, in the preferred embodiment, the phase "Different pair of connecting rods 43 dry link 43 is more than the first pair of connecting rods 4ι: = plate" The second pair of second pair of connecting rods 43 is located at: near the blade 31, that is, another The inner side of the first pair of connecting rods 2: 4: the first side portion m and the second side connecting rod 43 are located between the first pair of connecting rods 41 of the shroud. The length is equal, the distance between the Annon distance between the shafts 45 and 49 of the pin M376367 is equal to the distance between the shafts 47 to 5i. When the mine _ uncut workpiece, the shield 17 is in the released state' at this time - the right _ 41 and the second pair of links 43 are in a folded state, the pin 4 9 is located in the open slot of the first pair of link jaws, the lock shaft 47 is located in the open slot 4 of the second pair of links 43, and additionally because the height of the first (four) 171 of the shield 17 is greater than the height of the second side portion 172 The size is large' so that the first side portion 171 abuts against the work surface 111 of the table top, and the second side portion 172 is at the working * distance. The chamber surface m is kept as shown in Fig. 5, to be cut. Within the range of cutting ability, when cutting: f-inch is placed on the countertop m on the saw 100., toward the ::3, first the direction of the workpiece 53, # toward the round ore 15 is backward: Γ With the advancement of the workpiece 53, the _17 is lifted up and the rod 43 is tilted relative to the turret 31 toward the first side portion 171 of the hood 17 to hang the workpiece 53. As shown in Fig. 6, the thickness of the workpiece of the mining + 丨 丨 切 超过 超过 超过 超过 超过 台 〇〇 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = And the degree of the mine _ at this time do not know that the reading π has exceeded the cutting sequence operation, first: therefore # author also presses the workpiece 53' as normal, with the direction of the work H Μ 15 In the advancement of the third embodiment, the shield 17 is continuously moved 9 away from the work surface 111. In the preferred embodiment, the blade 31 is provided with a stop mechanism 55, the first side portion 171 of the shield 17 The inner side is provided with a matching device 57. As the workpiece 53' continues to advance, the shield 17 is continuously raised until the mating device 57 is mated with the stop mechanism 55, thereby restricting the shield 17 from continuing to Moving away from the direction of the work surface 111, the shield 17 is at the extreme position of the highest position, and the distance between the lower edge of the shield 17 and the work surface 111 is L2. In the preferred embodiment, L2 is approximately equal to L1. Thus, the workpiece exceeding the table saw cutting ability L1 is blocked by the shroud, so that the workpiece 53' cannot continue to advance, so that the workpiece 53' is not sawed by the circular saw blade 15, preventing the workpiece from being sawed by the circular saw blade 15. After cutting a part, it is found that the workpiece cannot be sawn off, so it is necessary to first close the table saw, wait for the circular saw blade to stop rotating, then return the workpiece, then rotate the handcuffs, raise the circular saw blade, and the cutting ability of the table saw. Can meet the sawing workpiece before starting the sawing To make, but due to the circular saw blade height adjustment, do not know when to regulate, and therefore is likely to require repeated constantly adjust and test cutting, the cutting operation is very inconvenient, but do not waste time and reduce work efficiency. It is also very easy to cause the operator to be annoyed. In the preferred embodiment, when the workpiece 53' is blocked by the shield 17, it is only necessary to turn off the table saw 100 and re-adjust the height of the circular saw blade 15 when it is unable to advance. Of course, when the shield 17 is at the extreme position of the highest position, the distance L2 between the lower edge of the shield 17 and the work surface 111 can also be set to M376367 - greater than the distance L1 from the top edge of the circular saw blade 15 to the work surface ill. In addition, the height difference between L2 and L1 can be maintained in hemp (4), so that the workpiece after the sawing can be separated by only a little external force, of course, the height difference between L 2 and L1 is set. The smaller the better. Further, when the shield 17 is at the extreme position of the highest position, the distance L2 between the lower edge of the shield 至 to the work surface ηι can also be set to be smaller than the distance u from the top edge of the round slab 15 to the work surface ln. In this way, the reading of the scent can be rounded and the singularity of the slab is reduced. The same is true. The difference between the height difference between L2 and u is set as small as possible. This ensures that the ore piece 15 cuts the workpiece with maximum cutting capacity. The stop mechanism 55 is fixedly disposed on the blade 31. As is known to those skilled in the art, the stop mechanism 55 can also be disposed on the blade 31. In the preferred embodiment, the stop The % of the support mechanism is a pin. Of course, the stop mechanism 55 can also be provided as a stop block, or can be integrally formed with the i - blade 31, and will not be described in detail herein. In the preferred embodiment, the mating device 57 is a mating block that is fixedly disposed on the shield 17. Although this creation has been disclosed in the preferred embodiment, #: it is not intended to limit the creation of this work, and anyone who is familiar with this skill can make various changes and modifications without departing from the spirit of this creation. The scope of protection is subject to the definition of the scope of the patent application. [Simple description of the diagram] M376367 Fig. 1: Stereo view of the table saw of this creation. Figure 2: A perspective view of the table saw of the present creation, in which the table saw has the base removed and the shield is in a cross-sectional view. Figure 3: A perspective view of the connecting rod and the blade of the table saw of the present creation. Figure 4: The front view of the table saw of this creation, in which the table saw is not cut, and the shield is in a released state against the work surface. Figure 5: The main view of the table saw of this creation, when the workpiece is in the state to be cut, and the thickness of the workpiece is within the cutting ability of the table saw. Figure 6: The main view of the table saw of this creation, when the workpiece is in the state to be cut, and the thickness of the workpiece exceeds the cutting capacity of the mine at this time, and the shield is at the extreme position of the highest position. Figure 7: The shield of the table saw of this creation, the structure of the connecting rod and the right side view of the blade, at this time the shield is at the extreme position of the highest position, and the mating device is mated with the stopping mechanism. [Main component symbol description] 11 Table 111 Work surface 13 Base 131 Inner cavity 132 Front panel 1321 Curved long hole 15 Circular saw blade 17 Shield 171 First side 172 Second side 19 Rotating handwheel 21 Handwheel shaft 23 Slider 25 Rotary 251 Chute 27 Swinger 12 M376367 29 Crossbar 31 Follower blade 33 Platen 35 First link 37 Follower blade locking mechanism 39 Second link 41 First pair of links 411 *First End 412 second end 413 open slot 43 second pair of links 431 first end 432 second end 433 open slot 45, 47 pin 49 '51 pin 53, 53' workpiece 55 stop mechanism 57 mating device L1 L2 distance Η workpiece thickness 100 Taiwan mine 13