M360757 五、新型說明： ， 【新型所屬之技術領域】 1 本案係應用於工具機，係為了加強阻擋加工作業進行時，粉塵飛 散之狀況，而增設細微擋體者。 【先前技術】 已知諸如石墨、木頭、複合材料、陶£等材f以卫具_進行切 # 肖域鑽削作業時易產生大量粉塵，粉塵的顆粒非常細微，但是硬度卻 非常高’若防塵設施不约完善，使粉塵渗入工具機_結構系統中， 將造成機件損壞甚至電路系統短路。 已知的防塵方式，係採防塵箱型設計，在切肖，江倾安裝—防塵獅 (參考第-圖所示），該防塵獅具有上開放箱口，切削工件位於防 塵箱20中，汲吸管路21設於防_2Q之箱壁。防塵脚設計的缺點包 括： _ 雜_20之上職式箱σ轉_粉獻量飛散。 該防塵箱2G巾距離槪吸#路21職口較近軌錢速快，遠離 進氣口的氣流流速慢，以致離進氣口較遠的粉塵吸入量銳減，甚至無 法被吸入，吸塵效果不佳。 田工件Ν度較咼，使切削點在進氣口以上，距離進氣口較遠，切 削粉塵易從箱口飛散，而使吸塵效果變差。 為了改善上述之缺點’本創作者，設計使用於該防塵箱2〇上方固 疋式的防屑板30 (參考第二圖所示），該防屬板3〇具有一可供該工 八機10之主軸自由通過之主軸孔31，再由該防塵箱2〇之一侧的沒吸 M360757 30係為一板片’其連結於該工具機10之固定物體，該防屑板3〇與該防 塵箱20頂緣之間具有很小的間隙，且於該防塵箱20之頂緣環設一阻擔 „ 單元22，該防塵箱20之阻擋單元22係為以高密度排列於刷座222之毛 刷221 ’因此s亥毛刷221的刷毛之間具有極為細小之間隙，僅供氣體通 過，該阻擋單元22之刷座222可以藉由螺絲鎖固、黏合或者係焊接等… 任何已知之固定手段結合於該防塵箱20之頂緣，本案係以螺絲223鎖固 達成，並該防屑板30具有一可供該工具機1〇之主軸自由通過之主軸孔 I 31。 參考第四圖及第五圖所示，該防肩板3〇與該防塵箱2〇頂緣之間具 有一微小之間隙，而該防塵箱2〇之頂緣設有阻擋單元22，該阻擋單元 22可圍繞於關隙，且酿料元22之毛刷221具有更微小之間隙，因 此，當該沒吸裝置透過沒吸管路21進行抽氣，空氣就會透過該毛刷221 之小間隙，再流人舰吸管路21，將加錢之粉塵移除，因為該毛刷 221之小_之面積遠小於該汲吸管路，依照白努力定律，通過該毛刷 221之小間_空氣速度會極為快速（空氣流動方向以箭頭表示），因 此，粉塵便更不易溢散，从大地提高了粉塵的移除效率。 雖然本案是以-個最佳實施繼綱，但精於此技藝者能在不脫 離本案精__各__式_。社所舉實施例僅用以 說明本案㈣’非__之細。舉凡不__從事的 麵修改或變化，賴轉帽專利範圍。 【圖式簡單說明】 第一圖為習用工具機防塵結構(一）。M360757 V. New description: , [New technical field] 1 This case is applied to the machine tool, in order to strengthen the situation of dust scattering when the processing operation is blocked, and the addition of fine block. [Prior Art] It is known that materials such as graphite, wood, composite materials, ceramics, etc. are used to produce a large amount of dust when the drilling is performed in the Shaw field. The dust particles are very fine, but the hardness is very high. Dust-proof facilities are not perfect, so that dust can seep into the machine tool_structure system, which will cause damage to the machine parts or even short circuit of the circuit system. The known dust-proof method adopts the dust-proof box design. In the cut-off, the river tilt installation--dust-proof lion (refer to the figure-picture), the dust-proof lion has an open box mouth, and the cutting workpiece is located in the dustproof box 20, The suction line 21 is provided on the wall of the anti-_2Q. Disadvantages of the design of the dustproof foot include: _ Miscellaneous _20 above the box σ turn _ powder contribution scattered. The dust box 2G towel is faster than the near rail of the sucking road # 21, and the air flow rate away from the air inlet is slow, so that the dust intake far away from the air inlet is sharply reduced, and even can not be sucked, the dust collecting effect Not good. The depth of the workpiece is relatively low, so that the cutting point is above the air inlet and far away from the air inlet. The cutting dust is easy to fly away from the box mouth, and the dust collecting effect is deteriorated. In order to improve the above-mentioned shortcomings, the creator has designed a chip-preventing plate 30 (refer to the second figure) which is fixed on the top of the dustproof box 2, and the anti-plate 3 has a machine for the work. The spindle of the 10 is freely passed through the spindle hole 31, and the unabsorbed M360757 30 on one side of the dustproof box 2 is a plate which is attached to the fixed object of the machine tool 10, and the chipboard 3 There is a small gap between the top edges of the dustproof box 20, and a blocking unit -22 is disposed at the top edge of the dustproof box 20. The blocking unit 22 of the dustproof box 20 is arranged at a high density in the brush holder 222. The brush 221' therefore has a very small gap between the bristles of the shoal brush 221 for gas passage, and the brush holder 222 of the blocking unit 22 can be locked, bonded or welded by screws, etc. Any known fixing The method is coupled to the top edge of the dustproof box 20, and the case is achieved by locking with a screw 223, and the chip preventing plate 30 has a spindle hole I 31 through which the spindle of the machine tool 1 can pass freely. As shown in the fifth figure, there is a between the shoulder guard 3〇 and the top edge of the dust box 2. a small gap, and the top edge of the dust box 2 is provided with a blocking unit 22, the blocking unit 22 can surround the closing gap, and the brush 221 of the brewing element 22 has a smaller gap, so when the suction is not sucked The device is pumped through the non-suction pipe 21, and the air passes through the small gap of the brush 221, and then flows into the ship suction pipe 21 to remove the dust of the added money, because the area of the small brush 221 is much smaller than According to the white effort law, the suction pipe _ air velocity through the brush 221 will be extremely fast (the air flow direction is indicated by an arrow), so the dust is less likely to overflow, and the dust removal efficiency is improved from the earth. Although this case is based on the best implementation of the program, but the skilled person can not deviate from the case __ each __ type _. The examples are only used to illustrate the case (four) 'non-_ _ fine Any modification or change that is not carried out by __ depends on the patent scope of the hood. [Simple description of the drawing] The first picture shows the dustproof structure of the conventional machine tool (1).