摘要:
A cutting insert holder (104) for releasably clamping a quadrilateral cutting insert (110) in a predetermined clamping position, the cutting insert (110) having a through bore (164) and a non-obtuse insert mounting corner. The cutting insert holder (104) includes a a clamping portion (116) formed with a wedge supporting surface (118) and a locking pin (116) received in the through bore (164). A clamping wedge (134) abuts the wedge supporting surface (118) and has an insert receiving pocket (180) with a pair of pocket side walls (184, 186) meeting at an insert receiving corner (188) for receiving the insert mounting corner (124). In a top view of the base surface a normal to the wedge supporting surface (118) passing through a center of the locking pin (166) passes through a first pocket side wall of the pair of pocket side walls (184, 186).
摘要:
In order to enable easy replaceability of a cutting element (14), the invention provides that in a tool holder (2), particularly for a burring tool, the cutting element (14) is held by means of a clamping claw (11) and a tightening screw (24) in a cutting element receptacle (8) in a clamping manner. The tightening screw (24) extends along a center axis (32), which is oriented at a tensioning angle (α) in relation to a holder longitudinal axis (6). The tensioning angle (α) is less than 45°, and particularly less than 30°. In this manner, easy front face accessibility to the tightening screw (24) is ensured, thus enabling easy replacement of the cutting element (14).
摘要:
The present invention relates to a cutting tool (621) and a cutting insert (641, 643). The tool includes a toolholder and at least one insert adapted for mounting relative to the toolholder. The at least one insert includes at least one chip removal channel (661, 663, 665).
摘要:
The present invention concerns to a clamped cutting tool used in the metalworking field. The clamped cutting tool includes a tool-holder , a shim member (84) placed on the tool-holder, a cutting insert (82) placed on the shim member (84), and a locking pin (94) held in engagement with the tool-holder for clamping the cutting insert (82). The tool-holder includes a forward end portion (74) having an insert receiving recess (80) formed therein, the recess (80) having a bottom wall (83) and at least one side wall (85) extending upwardly from the bottom wall (83), the bottom wall (83) including a pin-receiving hole (86) of a circular cross-section formed therein so as to extend downwardly. The shim member (84) has a bore (87) of a circular cross-section formed therethrough, the shim member (84) being disposed on the bottom wall (83) of the recess (80) in such a manner that the bore (87) communicates with the pin-receiving hole (86) of the tool-holder. The cutting insert (82) has an aperture (92) of a circular cross-section formed therethrough, the insert (82) being disposed on the shim member (84) in such a manner that the aperture (92) communicates with the bore (87) of the shim member (84). The locking pin (94) of a circular cross-section for clamping the cutting insert (82) in the tool-holder, the locking pin (94) having a rod portion (96), a head portion (102), and a radially outwardly protruding flange portion (98) disposed between the rod portion (96) and the head portion (102), the pin (94) being inserted through the aperture (92) of the cutting insert (82) and the bore (87) of the shim member (84) into the pin-receiving hole (86) of the tool-holder for rotation, with the rod portion (96) and the flange portion (98) being received in the pin-receiving hole (86) of the tool-holder and the bore (87) of the shim member (84), respectively. The head portion (102) is held in abutting engagement with the aperture (92) of the cutting insert (82) to press the insert (82) against the side wall (85) of the holder. The clamped cutting tool characterized in that: the bore (87) is concentric to the pin-receiving hole (86) of the tool-holder ; the locking pin (94) being formed so that the flange portion (98) is concentric to the rod portion (96) while the head portion (102) is eccentric to the flange portion (98).
摘要:
A cutting insert holder (104) for releasably clamping a quadrilateral cutting insert (110) in a predetermined clamping position, the cutting insert (110) having a through bore (164) and a non-obtuse insert mounting corner. The cutting insert holder (104) includes a a clamping portion (116) formed with a wedge supporting surface (118) and a locking pin (116) received in the through bore (164). A clamping wedge (134) abuts the wedge supporting surface (118) and has an insert receiving pocket (180) with a pair of pocket side walls (184, 186) meeting at an insert receiving corner (188) for receiving the insert mounting corner (124). In a top view of the base surface a normal to the wedge supporting surface (118) passing through a center of the locking pin (166) passes through a first pocket side wall of the pair of pocket side walls (184, 186).
摘要:
According to the subject matter of the present application there is provided a reversible cutting insert comprising top face, a bottom face, at least one side wall extending therebetween. The cutting insert is further formed with a central bore having a central axis X, the central bore extending between the top face and the bottom face. The central bore is formed with at least a first inner surface and a second inner surface, each extending between the top face and the bottom face. Each of the first and the second surface has a respective first and second top rim at the top face and a respective first and second bottom rim at the bottom face. The maximal distance R 1 between the first bottom rim and the central axis X is greater than the maximal distance r 1 between the first top rim and the central axis X, and the maximal distance R 2 from the central axis X of the second top rim is greater than the maximal distance r 2 between the second bottom rim and the central axis X.
摘要:
The present invention concerns to a clamped cutting tool used in the metalworking field. The clamped cutting tool includes a tool-holder , a shim member (84) placed on the tool-holder, a cutting insert (82) placed on the shim member (84), and a locking pin (94) held in engagement with the tool-holder for clamping the cutting insert (82). The tool-holder includes a forward end portion (74) having an insert receiving recess (80) formed therein, the recess (80) having a bottom wall (83) and at least one side wall (85) extending upwardly from the bottom wall (83), the bottom wall (83) including a pin-receiving hole (86) of a circular cross-section formed therein so as to extend downwardly. The shim member (84) has a bore (87) of a circular cross-section formed therethrough, the shim member (84) being disposed on the bottom wall (83) of the recess (80) in such a manner that the bore (87) communicates with the pin-receiving hole (86) of the tool-holder. The cutting insert (82) has an aperture (92) of a circular cross-section formed therethrough, the insert (82) being disposed on the shim member (84) in such a manner that the aperture (92) communicates with the bore (87) of the shim member (84). The locking pin (94) of a circular cross-section for clamping the cutting insert (82) in the tool-holder, the locking pin (94) having a rod portion (96), a head portion (102), and a radially outwardly protruding flange portion (98) disposed between the rod portion (96) and the head portion (102), the pin (94) being inserted through the aperture (92) of the cutting insert (82) and the bore (87) of the shim member (84) into the pin-receiving hole (86) of the tool-holder for rotation, with the rod portion (96) and the flange portion (98) being received in the pin-receiving hole (86) of the tool-holder and the bore (87) of the shim member (84), respectively. The head portion (102) is held in abutting engagement with the aperture (92) of the cutting insert (82) to press the insert (82) against the side wall (85) of the holder. The clamped cutting tool characterized in that: the bore (87) is concentric to the pin-receiving hole (86) of the tool-holder ; the locking pin (94) being formed so that the flange portion (98) is concentric to the rod portion (96) while the head portion (102) is eccentric to the flange portion (98).
摘要:
In a cutting tool a retention pin (12) releasably holds an insert (10), or an insert and seat, in place in a recess (20) of a cutter body (13). The retention pin (12) is fabricated from a blank having a cylindrical body portion (34) with a first axis (40) concurrent with the axis of the cylindrical head thereof (32), the body portion thereafter being threaded on a second axis (46) angularly disposed with respect to the first axis (40) and intersecting the same at about midpoint (42) of the body portion (34). When the thus threaded pin is inserted into the bore, it rotates the head portion (32) about the second axis (46), thereby to force the cutter insert (10) against the supporting shoulders (22) while drawing the insert into engagement with the seat.
摘要:
A cutting tool (10) includes a cutting portion (14) and a clamping mechanism (16) configured to be brought between an unclamped position in which a cutting insert (12) is removable from the cutting portion (14), and a clamped position in which the cutting insert (12) is clamped to the cutting portion (14). The clamping mechanism (16) includes a clamp (20) and a cam shaft (18). The clamp (20) is formed with a growth pattern region (20C6) having a varying diameter. The cam is formed with a growth pattern region (18C1) having a varying diameter. The growth pattern regions (20C6, 18C4) are configured for engaging each other to transform rotary motion of the cam shaft (18) into linear motion of the clamp (20) to thereby move the clamping mechanism (16) into the clamped position.