公开(公告)号：US4859123A

公开(公告)日：1989-08-22

申请号：US107431

申请日：1987-10-13

申请人： Yuzo Koesashi ,  Yasuhiko Kawade ,  Yoshikazu Iwata

发明人： Yuzo Koesashi ,  Yasuhiko Kawade ,  Yoshikazu Iwata

IPC分类号： B23B51/04 ,  B23C5/22

CPC分类号： B23B51/048 ,  B23C5/2213 ,  B23C2200/0411 ,  B23C2200/201 ,  B23C2200/323 ,  B23C2200/326 ,  Y10S408/713 ,  Y10T408/909 ,  Y10T408/9098 ,  Y10T408/90993

摘要： An insert boring tool includes radially outward and inward cutting inserts mounted thereon. The radially outward and inward inserts are arranged such that end cutting edges of the respective inserts are intersected with each other at a point of intersection in loci of rotation of the respective inserts in a plane containing an axis of a tool body. The radially outward and inward inserts are positioned such that, assuming that a radial distance between the point of intersection and a radially outermost end of the end cutting edge of the radially outward insert is A, and a radial distance between the point of intersection and a radially innermost end of the end cutting edge of the radially inward insert is B, a ratio of A/B takes a value of from 2/8 to 45/55.

公开(公告)号：US5509761A

公开(公告)日：1996-04-23

申请号：US123380

申请日：1993-09-20

申请人： Gunter Grossman ,  Yoshikazu Iwata

发明人： Gunter Grossman ,  Yoshikazu Iwata

IPC分类号： B23B51/00 ,  B23B51/04 ,  B23B51/02

CPC分类号： B23B51/0493 ,  B23B2251/48 ,  Y10T408/455 ,  Y10T408/905 ,  Y10T408/907 ,  Y10T408/9097

摘要： A drill includes a substantially cylindrical bit body 10 having an axis O. The bit body 10 has a flange portion 13 which includes a converging portion 13a which reduces its diameter progressively towards the front end of the bit body and a flange 13b which is provided with a rearwardly facing annular surface 13c. The annular end surface is contactable with the front end surface of a drill holding portion of a machine too. Chip discharging flutes 14A,14B, each having an inner surface constituted by first and second inner surface portions 14a,14b and a third inner surface portion 14c arcuately recessed therefrom, are formed in the front end portion of the tip body 10. An inner peripheral cutting insert 16A and an outer peripheral cutting insert 16B are mounted on the ends of the chip-discharging flutes 14A,14B. The cross-sectional area S.sub.A of the first-mentioned chip-discharging flute 14A is determined to be greater than that S.sub.B of the second-mentioned chip-discharging flute 14B. A plurality of grooves 25 are formed in the third inner surface portion 14c so as to extend along each chip-discharging flute.

摘要翻译： 钻头包括具有轴线O的基本上圆柱形的钻头体10.钻头体10具有凸缘部分13，其包括会聚部分13a，该会聚部分13a逐渐朝向钻头体的前端减小其直径;以及凸缘13b， 向后的环形表面13c。 环形端面也与机器的钻头保持部的前端面接触。 在前端部10的前端部形成有由第一和第二内表面部分14a，14b构成的内表面和与其弓形凹入的第三内表面部分14c的排屑槽14A，14B。 切削刀片16A和外周切削刀片16B安装在排屑槽14A，14B的端部。 首先提到的排屑槽14A的横截面面积SA被确定为大于第二个排屑槽14B的SB。 多个槽25形成在第三内表面部分14c中，以沿每个排屑槽延伸。

公开(公告)号：US4820905A

公开(公告)日：1989-04-11

申请号：US71448

申请日：1987-07-09

申请人： Yoshikazu Iwata ,  Makoto Sugiyama ,  Motohisa Miyauchi

发明人： Yoshikazu Iwata ,  Makoto Sugiyama ,  Motohisa Miyauchi

IPC分类号： F27B9/28 ,  D01F9/32 ,  H05B3/64

CPC分类号： D01F9/32

摘要： A carbonizing furnace includes a heating chamber with a wall having channels therein, a carbon heater in the channels, a heat insulator composed of carbon fiber felt and a ceramic fiber felt which covers the heating chamber such that the carbon fiber felt is in contacting with the heating chamber and the ceramic fiber felt is separated by a space from the carbon fiber felt, and a housing enclosing the heating chamber and the heat insulator, and an inlet for filling the insulator with an inert gas. The carbonizing furnace can be run stably and continuously.

摘要翻译： 碳化炉包括具有通道的壁的加热室，通道中的碳加热器，由碳纤维毡组成的绝热体和覆盖加热室的陶瓷纤维毡，使得碳纤维毡与 加热室和陶瓷纤维毡与碳纤维毡隔开一个空间，封闭加热室和绝热器的壳体以及用惰性气体填充绝缘体的入口。 碳化炉可以稳定运行。