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公开(公告)号：US09623493B2
公开(公告)日：2017-04-18
申请号：US12273774
申请日：2008-11-19
CPC分类号： B23C5/1045 , B23C5/2221 , B23C2200/128 , B23C2200/203 , B23C2210/168 , B23C2250/12 , Y10T407/1924 , Y10T407/235
摘要： A double-sided ball end mill includes a body having a generally hemispherical forward end portion and a rearward end portion. The forward end portion includes insert-receiving pockets and chip pockets. A cutting insert can be mounted within each insert-receiving pocket. The cutting insert includes a first substantially planar surface, a second substantially planar surface, a first curvilinear side surface, a second curvilinear side surface, a first pair of cutting edges formed at an intersection between the first substantially planar surface and the first and second curvilinear side surfaces, and a second pair of cutting edges formed at an intersection between the second substantially planar surface and the first and second curvilinear side surfaces. The first and second planar surfaces are substantially parallel to each other, and the cutting insert is mirror symmetric about all three axes.
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公开(公告)号：US20100124465A1
公开(公告)日：2010-05-20
申请号：US12273774
申请日：2008-11-19
CPC分类号： B23C5/1045 , B23C5/2221 , B23C2200/128 , B23C2200/203 , B23C2210/168 , B23C2250/12 , Y10T407/1924 , Y10T407/235
摘要： A double-sided ball end mill includes a body having a generally hemispherical forward end portion and a rearward end portion. The forward end portion includes insert-receiving pockets and chip pockets. A cutting insert can be mounted within each insert-receiving pocket. The cutting insert includes a first substantially planar surface, a second substantially planar surface, a first curvilinear side surface, a second curvilinear side surface, a first pair of cutting edges formed at an intersection between the first substantially planar surface and the first and second curvilinear side surfaces, and a second pair of cutting edges formed at an intersection between the second substantially planar surface and the first and second curvilinear side surfaces. The first and second planar surfaces are substantially parallel to each other, and the cutting insert is mirror symmetric about all three axes.
摘要翻译： 双面球头立铣刀包括具有大致半球形的前端部和后端部的主体。 前端部分包括插入物容纳袋和碎屑袋。 切削刀片可以安装在每个刀片接收槽内。 切削刀片包括第一基本上平坦的表面，第二基本上平坦的表面，第一曲线侧表面，第二曲线侧表面，第一对切削刃，其形成在第一基本上平坦的表面与第一和第二曲线 以及形成在第二基本上平坦的表面与第一和第二曲线侧表面之间的交叉处的第二对切削刃。 第一和第二平面彼此基本平行，并且切削刀片围绕所有三个轴镜像对称。
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公开(公告)号：US20090022553A1
公开(公告)日：2009-01-22
申请号：US11879189
申请日：2007-07-16
IPC分类号： B23B27/16
CPC分类号： B23B27/1677 , B23B29/04 , B23B2205/045 , B23B2205/16 , B23B2260/03 , Y10T407/2274 , Y10T407/2278 , Y10T407/2282
摘要： A clamping tool holder includes a tool holder body and a clamp for clamping a cutting insert. The clamp causes the cutting insert to press against the bottom and the side walls of an insert-receiving pocket of the tool holder body. The tool holder body has an inclined surface sloping inward in a direction away from the insert-receiving pocket. The clamp has an inclined surface that acts as a ramp with the inclined surface of the tool holder body. A guide pin prevents the clamp from twisting during tightening or loosening of the clamp. When a clamp screw is tightened, a nub of the clamp engages only an inside rearward surface of a mounting bore of the insert along a line of contact and the top surface of the cutting insert. In addition, only a forward lower face of a head portion of the clamp screw engages a top surface of the clamp.
摘要翻译： 夹持工具夹持器包括工具保持器主体和用于夹紧切削刀片的夹具。 夹具使得切削刀片压靠在工具保持器主体的刀片容纳槽的底部和侧壁上。 工具架主体具有在远离插入物容纳口的方向向内倾斜的倾斜表面。 夹具具有倾斜表面，其作为与刀架主体的倾斜表面的斜面。 导向销可防止夹子拧紧或松开时扭曲。 当夹紧螺钉被拧紧时，夹具的一个接头仅沿着接触线和切削刀片的顶表面仅接合刀片的安装孔的内侧后表面。 此外，只有夹紧螺钉的头部的前下表面接合夹具的顶表面。
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公开(公告)号：US07547163B2
公开(公告)日：2009-06-16
申请号：US11879189
申请日：2007-07-16
CPC分类号： B23B27/1677 , B23B29/04 , B23B2205/045 , B23B2205/16 , B23B2260/03 , Y10T407/2274 , Y10T407/2278 , Y10T407/2282
摘要： A clamping tool holder includes a tool holder body and a clamp for clamping a cutting insert. The clamp causes the cutting insert to press against the bottom and the side walls of an insert-receiving pocket of the tool holder body. The tool holder body has an inclined surface sloping inward in a direction away from the insert-receiving pocket. The clamp has an inclined surface that acts as a ramp with the inclined surface of the tool holder body. A guide pin prevents the clamp from twisting during tightening or loosening of the clamp. When a clamp screw is tightened, a nub of the clamp engages only an inside rearward surface of a mounting bore of the insert along a line of contact and the top surface of the cutting insert. In addition, only a forward lower face of a head portion of the clamp screw engages a top surface of the clamp.
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公开(公告)号：US06190143B1
公开(公告)日：2001-02-20
申请号：US09420294
申请日：1999-10-18
IPC分类号： F04B1700
CPC分类号： F04B39/08
摘要： An improved piston-type vacuum pump comprises a reciprocating piston disposed within a cylinder having a proximal end and a distal end, an inlet port formed in the side of the cylinder near the proximal end, and a spring-biased outlet valve, such as a poppet valve or a rocker valve, disposed at the distal end of the cylinder. The piston stroke is configured to provide zero or negative clearance between the piston head and the face of the outlet valve at the end of the compression stroke. The piston reciprocates within the cylinder from a first position wherein the surface of the piston head is proximal of the inlet port, to a second position wherein the surface of the piston head is beyond the distal end of the cylinder, so as to contact the face of the outlet valve in its open position. The piston top and outlet valve face remain in contact until the piston has retracted into the distal end of the cylinder, allowing the valve to seal the distal end of the cylinder prior to the beginning of the expansion stroke, such that there is substantially no dead volume within the cylinder at the beginning of the expansion stroke.
摘要翻译： 一种改进的活塞式真空泵包括设置在具有近端和远端的气缸内的往复式活塞，形成在靠近近端的气缸侧面的入口端口和弹簧偏置的出口阀，例如 提升阀或摇杆阀，设置在气缸的远端。 活塞冲程构造成在压缩冲程结束时在活塞头和出口阀的表面之间提供零或负的间隙。 活塞在气缸内从活塞头的表面靠近入口端的第一位置往复运动到第二位置，其中活塞头的表面超出气缸的远端，以便接触面 的出口阀处于打开位置。 活塞顶部和出口阀面保持接触，直到活塞已经缩回到气缸的远端，允许阀在膨胀冲程开始之前密封气缸的远端，使得基本上没有死 在膨胀行程开始时气缸内的体积。
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