公开(公告)号：WO1991015322A1

公开(公告)日：1991-10-17

申请号：PCT/US1991000314

申请日：1991-01-16

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  RAMUNAS, Valdas, S.

IPC: B23C07/00

CPC classification number: B23B31/02 ,  Y10T279/17881 ,  Y10T279/17888 ,  Y10T403/61 ,  Y10T408/95 ,  Y10T409/30952

Abstract: The present invention is a tool holder which permits lateral insertion and removal of a tool means (16 and 18) into and from the tool holder (10) thereby making it unnecessary to move the machine or workpiece to provide excess clearance. The tool holder (10) includes a main body (12) having a shallow tool cavity (20) formed in one end thereof for receiving the tool means (16 and 18). A locking element (14) having a u-shaped collar (42) is rotatably mounted to the main body (12) for clamping the tool means (16 and 18) within the tool cavity (20). The u-shaped collar (42) defines a tool slot (43) having a tool slot opening (50) which extends from the side of the locking element (14). When the locking element (14) is in an unlocked position, the tool slot opening (50) aligns radially with the opening side of the tool cavity (20) to permit lateral insertion and removal of the tool means (16 and 18) into and from the cavity (20). When the locking element (14) is rotated to the locked position, tool slot opening (50) is moved out of alignment with the open side of the cavity (20) thereby preventing removal of the tool means (16 and 18).

公开(公告)号：WO1991010807A1

公开(公告)日：1991-07-25

申请号：PCT/US1990006773

申请日：1990-11-19

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  BEACH, Wayne, H. ,  MONTGOMERY, Robert, H., Jr. ,  SHEIRER, Daniel, C.

IPC: E21C35/18

CPC classification number: E21C35/18

Abstract: A cutting bit (10) useful in construction and/or mining and a socket mount (14) to rotatably support the cutting bit (10). The socket mount (14) includes a bore (16) having a cylindrical shape and either a conical opening (18) or a substantially cylindrical opening at a front end thereof. The cutting bit (10) includes a working head (22) having a shoulder (24) and a shank (26) of circular cross section depending from the working head (22). The shoulder (24) may be either chamfered or straight. The shank includes a spacer (30) contiguous with the shoulder (24) of the working head (22), an annular recess (32) contiguous with the spacer (30), and an annular retainer (34) contiguous with the annular recess (32). The shoulder (24) and the spacer (30) substantially conform to the size and shape of the interior surface of the socket mount (14) at the juncture of the opening (18) and cylindrical shaped bore (16). A spring sleeve (12) is disposed within the annular recess (32).

Abstract translation: 一种用于建筑和/或挖掘的切割钻头（10）和用于可旋转地支撑切割钻头（10）的插座安装件（14）。 插座安装件（14）包括具有圆柱形形状的孔（16）和在其前端的圆锥形开口（18）或基本圆柱形的开口。 切割头（10）包括具有从工作头（22）悬垂的具有肩部（24）和圆形横截面的柄（26）的工作头（22）。 肩部（24）可以是倒角的或直的。 柄部包括与工作头部（22）的肩部（24）邻接的间隔件（30），与间隔件（30）邻接的环形凹部（32）以及与环形凹部 32）。 肩部（24）和间隔件（30）基本上符合在开口（18）和圆柱形孔（16）的接合处的插座安装件（14）的内表面的尺寸和形状。 弹簧套（12）设置在环形凹部（32）内。

公开(公告)号：WO1991008090A1

公开(公告)日：1991-06-13

申请号：PCT/US1990005799

申请日：1990-10-10

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  BEACH, Wayne, H. ,  SHIRK, Steven, D.

IPC: B27G13/00

CPC classification number: A01G23/067

Abstract: A cutting bit (10) for mounting in a block mount (12). The cutting bit (10) including a working head (22) and a shank (24) depending therefrom. The shank (24) includes a recess (62) formed within at least one side portion thereof. The block mount (12) includes two matching half members (14, 16) secured on opposing sides of a rotating disc (20). A slot (56) extends perpendicularly across at least one of the half members (14, 16) to receive the shank (24) in a wedge like fit. Formed within the slot (56) is a pin (84) for mating engagement with the recess (62).

公开(公告)号：WO1991002882A1

公开(公告)日：1991-03-07

申请号：PCT/US1990001313

申请日：1990-03-09

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  STIFFLER, Stephen, P. ,  BEACH, Wayne, H. ,  ROWLETT, Don, C. ,  SHIRK, Steven, D.

IPC: E21B10/44

CPC classification number: E21B10/56 ,  E21B10/44

Abstract: An excavating tooth (40) for use in connection with an earth drilling auger (10) includes a main body portion (42) terminating in a working end (54) and a shank (44) extending upwardly from the main body portion (42). A plurality of tungsten carbide inserts (64) are embedded in the working end (54) of the tooth (40) and project outwardly therefrom. During drilling operations, the carbide inserts (64) engage the earth and chisel away rock and other material which is subsequently conveyed to the surface by the flight structure (18, 20) of the auger (10). The inserts (64) are inclined forwardly with respect to the plane of the shank (44) to enable the inserts (64) to withstand greater loads than before. In the preferred embodiment, the insert (64) has a generally cylindrical proximal end embedded in the working end (54) of the auger tooth (40) and a distal end including forward and rearward inclined surfaces (66, 68) terminating in a transverse cutting edge (70).

公开(公告)号：WO1990013384A1

公开(公告)日：1990-11-15

申请号：PCT/US1990001572

申请日：1990-03-23

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  LOCKARD, Thomas, A.

IPC: B23B27/16

CPC classification number: B23B27/167 ,  Y10T407/2274 ,  Y10T407/2276

Abstract: A combination tool holder designed to accept various different cutting inserts, shims, and securing devices. The tool holder has a shim (50) supporting a cutting insert (34). Bushing (44) is threaded into bore (18), and shim screw (48) secures shim (50) to holder (12). The shim and shim securing assembly are designed to maximize shim bearing surface to suitably support cutting inserts that tend to be brittle and relatively low in transverse rupture strength.

Abstract translation: 组合工具架，设计用于接受各种不同的切削刀片，垫片和固定装置。 刀架具有支撑切削刀片（34）的垫片（50）。 衬套（44）拧入孔（18）中，并且垫片螺钉（48）将垫片（50）固定到保持器（12）上。 垫片和垫片固定组件设计成使垫片表面最大化，以适当地支撑易于脆性并且横向断裂强度相对较低的切削刀片。

公开(公告)号：WO1990008103A1

公开(公告)日：1990-07-26

申请号：PCT/US1989005515

申请日：1989-12-07

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  TERRY, Charles, J. ,  NEWMAN, Harold, C.

IPC: C01B31/34

CPC classification number: C04B35/5626 ,  C01B32/949 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/80

Abstract: A molten blend of an alkali metal halide containing tungsten is treated with solid particulate carbonaceous reactants, such as natural flake graphite. Tungsten monocarbide is produced having a large percentage of relatively coarse crystals. The crystal morphology is blocky or thick bladed with some equant forms and the carbon is present in the correct stoichiometric amount of 6.13 % by weight, thus eliminating any need for carbon additions prior to sintering.

Abstract translation: 含有钨的碱金属卤化物的熔融共混物用固体颗粒碳质反应物如天然片状石墨处理。 产生具有相当大比例的较大晶体的单体碳化钨。 晶体形态为块状或厚度为一些等边形状的刀片，碳以正确的化学计量量存在，为6.13％（重量），从而消除了烧结前对碳添加的任何需要。

公开(公告)号：WO1990005119A1

公开(公告)日：1990-05-17

申请号：PCT/US1989004610

申请日：1989-10-13

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  MEHROTRA, Pankaj, Kumar ,  BILLMAN, Elizabeth, R.

IPC: C04B33/56

CPC classification number: C04B35/119 ,  C04B35/645 ,  C04B35/803

Abstract: A metal cutting insert is provided with an alumina based ceramic composition composed of (in volume percent, v/o): about 1.5 to 17.5 silicon carbide whiskers; about 5 to 17.5 zirconia; residue of a magnesium oxide addition added in an amount effective to enhance the metal cutting lifetime of the cutting edge of the insert; and an alumina based matrix in which the silicon carbide whiskers, zirconia and residue of magnesium oxide are substantially homogeneously distributed. At least 4 v/o of the alumina based ceramic composition is tetragonal zirconia. Figure 1 (10) is an isometric view of a square cutting insert having a rake face (30), a flank face (50), and a cutting edge (70) at the juncture of the rake and the flank faces in accordance with the present invention.

Abstract translation: 金属切削刀片设置有由（体积百分比，v / o）组成的氧化铝基陶瓷组合物：约1.5至17.5个碳化硅晶须; 约5至17.5氧化锆; 添加的氧化镁残余物的添加量有效地提高插入物的切削刃的金属切削寿命; 以及其中碳化硅晶须，氧化锆和氧化镁残留物基本上均匀分布的氧化铝基质。 至少4v / o的氧化铝基陶瓷组合物是四方晶氧化锆。 图1（10）是具有前刀面（30），后刀面（50）和切削刃（70）的方形切削刀片的等距视图，该切削刃在耙齿和侧面的接合处根据 本发明。

公开(公告)号：WO1990005045A1

公开(公告)日：1990-05-17

申请号：PCT/US1989004598

申请日：1989-10-13

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  MEHROTRA, Pankaj, Kumar ,  BILLMAN, Elizabeth, R.

IPC: B24D03/02

CPC classification number: C04B35/645 ,  B23B27/148 ,  B23B2228/61 ,  B24D3/02 ,  C04B35/119 ,  C04B35/803

Abstract: An article of manufacture, preferably a metal-cutting insert (10), is provided with an alumina based ceramic composition composed of (in volume percent, v/o): about 1.5 to 37.5 silicon carbide whiskers; about 5 to 17.5 zirconia; residue of a magnesium oxide addition added in an amount effective to enhance the metal-cutting lifetime of the cutting edge (70) of the insert; and an alumina based matrix in which the silicon carbide whiskers, zirconia and residue of magnesium oxide are substantially homogeneously distributed. At least 2 v/o of the alumina based ceramic composition is tetragonal zirconia.

Abstract translation: 一种制品，优选一种金属切削刀片（10），其具有由（体积％，v / o）：约1.5至37.5个碳化硅晶须组成的氧化铝基陶瓷组合物; 约5至17.5氧化锆; 添加的氧化镁残余物的添加量有效地提高插入件的切削刃（70）的金属切削寿命; 以及其中碳化硅晶须，氧化锆和氧化镁残留物基本上均匀分布的氧化铝基质。 至少2v / o的氧化铝基陶瓷组合物是四方晶氧化锆。

公开(公告)号：WO1990003468A1

公开(公告)日：1990-04-05

申请号：PCT/US1989003935

申请日：1989-09-12

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  ISAKOV, Edmund ,  MANWAY, Terry, A.

IPC: E01B27/16

CPC classification number: E01B27/16

Abstract: A tamping pad (15) includes a cutout (22) along the length of the leading edge (23) thereof to support at least one wear-resistant insert (24) rigidly positioned therein. The wear-resistant insert (24) comprises a body having a first side (26) and a second opposed side (28), first and second opposed major surfaces and first and second opposed shoulders (30 and 32). The side (26) of the insert body defines a tamping blade leading edge (42) which is arcuate in shape between the opposed shoulders. The arcuate leading edge of the insert body has a radius which defines the length of the arcuate edge to be of a ratio of about 1.3 relative to the width of the carbide insert (24). Preferably, the plurality of inserts (24) extends end to end along the length of the leading edge (23) of the blade to define the interrupted leading edge of the tamping pad as formed by the curvilinear leading edge of each of the plurality of inserts (24).

公开(公告)号：WO1990003247A1

公开(公告)日：1990-04-05

申请号：PCT/US1989003937

申请日：1989-09-12

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  NIEBAUER, Kenneth, L.

IPC: B23P15/28

CPC classification number: B23B27/045 ,  B23P15/30 ,  Y10T407/235 ,  Y10T407/24

Abstract: An improved cutting insert (10) with chip control features having an insert body (12) having wall regions, sides and top and bottom walls adapted for mounting in a pocket in a holder. The insert body has cutting edges (26) and a diagonal notch (30) or the like in the top and bottom sides. A land region (34) extends rearwardly from the end wall region (14) toward the respective top or bottom wall and defines a surface region (38) of a predetermined width. An ascending wall or back ramp (40) initiates in a portion of the land and terminates at the respective top or bottom wall. A chipbreaker depression (42) initiates in a forward portion of the land proximate the cutting edge (26) and extends into and bisects the back ramp (40).