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    • 2. 发明公开
    • MACHINE TOOL BIT DESIGN
    • 机床位设计
    • EP2498939A1
    • 2012-09-19
    • EP10829345.7
    • 2010-11-10
    • Gischus, Simon DeanKilpatrick, Ian Lachlan
    • Gischus, Simon DeanKilpatrick, Ian Lachlan
    • B23B51/00B23G5/06B23C5/10B27G15/00B25D17/08B23B51/10B23B51/02B25D17/02
    • B23B31/005B23B51/02B23B2226/75B23B2231/0212B23B2251/248B23B2260/072B23C5/10B23D77/00B23G5/064Y10T407/19Y10T408/907
    • A machine tool bit, such as a tool for drilling, milling, reaming or tapping or the like comprising a work portion (71) and a shank (73) extending from the work portion. The shank (73) is provided with one or more regions of reduced mechanical torque strength. Such regions can be for example, a reduced diameter (74), axial or longitudinal slots (84, 114), reduced cross sectional area (97), bores (94), annular notch or groove (63, 65), or a slot. The shank is preferably constructed with these features such that the transverse stability of the tool bit is greater than a machine tool bit in which an equivalent reduction in mechanical torque strength is achieved by a mere reduction in diameter of the shank. Technically, the Polar moment of inertia (resistance to torsion) of the modified shank is greater than the polar moment of inertia of a shank with a mere reduction in diameter of the shank. The notches, recesses, grooves, bores or the like may further be filled with a material (75) to provide additional transverse stability to these one or more regions of reduced mechanical torque strength.
    • 一种机床刀具,例如用于钻削,铣削,铰孔或攻丝等的工具,包括工作部分(71)和从工作部分延伸的柄部(73)。 柄(73)设置有一个或多个机械扭矩强度降低的区域。 这些区域可以是例如减小的直径(74),轴向或纵向狭槽(84,114),减小的横截面积(97),孔(94),环形凹槽或凹槽(63,65)或狭槽 。 柄优选地具有这些特征,使得工具头的横向稳定性大于机械工具头,其中机械扭矩强度的等效降低仅通过柄的直径的减小来实现。 从技术上讲,改良柄的极性转动惯量(抗扭转力)大于柄的极
      性惯性力矩,仅减小柄的直径。 凹口,凹槽,凹槽,孔或类似物可以进一步填充有材料(75)以为这些具有降低的机械扭矩强度的一个或多个区域提供额外的横向稳定性。
    • 3. 发明公开
    • SMALL-DIAMETER DEEP HOLE DRILL AND FINE DEEP HOLE PROCESSING METHOD
    • Tieflochbohrer mit kleinem Durchmesser und Verfahren zur Bearbeitung feinerTieflöcher
    • EP2172293A1
    • 2010-04-07
    • EP08777156.4
    • 2008-06-12
    • Hitachi Tool Engineering, Ltd.
    • KONDOH, YoshihiroAKAMATSU, Takeshi
    • B23B51/00
    • B23B51/02B23B35/00B23B2251/245B23B2251/248B23B2251/422B23B2251/426B23B2251/54B23B2251/56B23B2270/56Y10T408/03Y10T408/23Y10T408/5586Y10T408/9095Y10T408/9097Y10T409/303808
    • A small-diameter drill for deep hole drilling is provided which is capable of inhibiting the cutting chips from getting bitten and producing a straightness for a drilled hole, thus suitable for drilling a hole having a depth (L) which is 15 or more times the diameter (D) of a drilled hole. The small-diameter drill 1 has a diameter 2 which is 1 mm or less and a drill section 5 including cutting edge(s) 3 and flute(s) 4. The length 11 of the flute 4 is at least 5 times and at most 10 times the drill diameter 2. The diameter of the drill section 5, after being reduced in diameter from the cutting edge 3 toward the rear of the drill section 5, is expanded in diameter so that the outer diameter at the end of the flute 4 becomes at least 0.9 times and at most 0.98 times the drill diameter 2. An expanded-diameter portion 10 is provided between the drill section 5 and a neck section 6 connected to a shank 7 and is expended in diameter from the outer diameter at the end 9 of the flute 4 up to 1 or less times the drill diameter 2. The diameter of the neck section 6 is smaller than the drill diameter 2, and the length 12 of the neck section 6 is 10 or more times the drill diameter 2.
    • 提供了一种用于深孔钻削的小直径钻头,其能够抑制切屑被咬入并产生钻孔的平直度,因此适于钻孔深度(L)为15或更大倍数的孔 钻孔直径(D)。 小直径钻头1的直径2为1mm或更小,钻头部分5包括切削刃3和凹槽4.长槽4的长度11为至少5倍以上 钻头直径2的10倍。钻头部分5的直径从切削刃3朝向钻头部分5的后部减小直径后扩大,使得凹槽4的端部的外径 变为钻头直径2的至少0.9倍和至多0.98倍。扩径部分10设置在钻头部分5和连接到柄部7的颈部部分6之间,并且从末端的外径直径消耗 9的长度为钻头直径2的1倍以下。颈部6的直径小于钻头直径2,颈部6的长度12为钻头直径2的10倍以上。
    • 4. 发明公开
    • Spade bit
    • Spitzbohrwerkzeug
    • EP1525964A2
    • 2005-04-27
    • EP04256433.6
    • 2004-10-19
    • GREENLEE TEXTRON INC.
    • Nordlin, William F.
    • B27G15/00
    • B23B51/0009B23B2251/14B23B2251/248B23B2251/406B27G15/00Y10T408/9065Y10T408/909
    • An embodiment of a spade bit (100) has straight grooves (128) at a lead angle (α) of 4 to 8 degrees placed on flat edges of the spade bit. In an alternative embodiment, a spade bit (200) has two steps (232a,232b) of straight grooves (228) at a lead angle (α) of 4 to 8 degrees placed on flat edges of the spade bit. In other alternative embodiments, a spade bit (300) has tapered flat edge which have straight grooves (328) at a lead angle (α) of 4 to 8 degrees placed thereon. The straight grooves on the flat edges of the spade bit allows the spade bit to pull itself through the workpiece with a minimal amount of penetration. The flat edges of the spade bit may also have cutting surfaces for cleaning the hole and permitting the easy removal of the spade bit from the hole after drilling.
    • 铲形钻头(100)的实施例具有位于铲形钻头的平坦边缘上的4至8度的引导角(±)的直槽(128)。 在替代实施例中,铲形钻头(200)具有位于铲形钻头的平坦边缘上的4至8度的提升角(±)的两个直线槽(228)的两个台阶(232a,232b)。 在其他替代实施例中,铲形钻头(300)具有锥形平坦边缘,其具有位于其上的4-8度的引导角(±)的直槽(328)。 铲形钻头的平坦边缘上的直槽允许铲形钻头以最少的穿透力将其自身拉过工件。 铲头的平坦边缘还可以具有用于清洁孔的切割表面,并且允许在钻孔后从孔中容易地去除铲形钻头。
    • 7. 发明公开
    • DRILL
    • 钻头
    • EP2322303A1
    • 2011-05-18
    • EP09813037.0
    • 2009-09-04
    • Mitsubishi Materials Corporation
    • YANAGIDA KazuyaNARUKE Koichiro
    • B23B51/00
    • B23B51/02B23B2251/248B23B2251/443B23B2251/446B23B2251/54B23B2270/34Y10T408/5586Y10T408/909Y10T408/9095Y10T408/9097
    • A guide portion prevents the drilling hole from curving due to a skipping rope phenomenon, and also prevents the inner wall face of the drilling hole from being damaged, so that its surface roughness can be improved.
      Chip evacuating flutes 4 are formed in the periphery of a drill body 1 which has a stick shape and is rotatable on its axis O, from its front flank 3 toward the rear side. Cutting edges 2A are formed along ridge lines where the front flanks 3 intersect with wall faces 4A which are in the chip evacuating flutes 4 and face in a drill rotational direction T.
      A cutting edge section 2, where the cutting edges 2A are formed, is provided in the front side of the drill body 1. A cutting edge section 2 has an external diameter which is smaller toward the rear side in the axis O direction than the external diameter D at the cutting edges 2A.
      A guide portion 6 has a maximum external diameter part 6A at the front periphery side, and is provided to the rear side of the cutting edge section 2.
      An external diameter at the maximum external diameter part 6A is larger than the external diameter at the rear of the cutting edge section 2, and is smaller than or equal to the external diameter D at the cutting edges 2A.
      The maximum external diameter part 6A of the guide portion 6 shows a smooth convex curve shape in a rotatory figure obtained by rotating it on the axis O.
    • 导向部分防止钻孔由于跳绳现象而弯曲,并且还防止钻孔的内壁面被损坏,从而可以改善其表面粗糙度。 切屑排出槽4形成在钻头体1的周围,该钻头体1具有棒状并且能够沿其轴线O从其前侧3向后侧旋转。 切削刃2A沿着前刀面3与排屑槽4内的壁面4A相交的棱线形成,并沿着钻孔旋转方向T面对。形成切削刃2A的切削刃部2是 设置在钻头本体1的前侧。切削刃部2具有外径,其在轴线O方向上的后侧比在切削刃2A处的外径D小。 引导部6在前缘部侧具有最大外径部6A,并且设置在切削刃部2的后侧。最大外径部6A的外径比后方的外径大 并且小于或等于切削刃2A处的外径D. 引导部分6的最大外径部分6A在通过在轴线O上旋转而获得的旋转图中显示出平滑的凸曲线形状。