摘要:
Bei einem Verfahren zum Schneiden einer nutförmigen Ausnehmung (40) in ein Werkstück (6) wird ein Schneidwerkzeug (4) für eine Werkzeugmaschine (1) an einem Werkstück (6) bereitgestellt. Das Schneidwerkzeug (4) wird in eine Schneidposition verlagert, in der das Schneidwerkzeug (4) in Eingriff mit dem Werkstück (6) steht. Das in Eingriff mit dem Werkstück (6) stehende Schneidwerkzeug (4) wird zum Schneiden der nutförmigen Ausnehmung (40) relativ zu dem Werkstück (6) verlagert. Beim Schneiden wird ein Span mit einer vorbestimmten, maximalen Spanlänge erzeugt, die geringer ist als eine Gesamtlänge (41) der zu erzeugenden Ausnehmung (40).
摘要:
The invention relates to tools for the machining of materials by milling. The invention provides an improved form for a rotary cutting tool such as an end-mill, configured to extend tool life when increasing metal removal rates. The invention provides a rotary multi-tooth cutter (10), the cutting edge (18) of each tooth being provided along its length with a repeated waveform (20), comprising four substantially straight sections (22, 24, 26, 28) interconnected by radii (29), the first section (22) being identical with the unmodified cutting edge (18). The second section (24) adjoins the first section (22) into the tooth. The third section (26), adjoining the first section (22) on a side nearer the tool tip (16), extends at an angle (A) to the first section (22) into the tooth. The fourth section (28) is connected to the third section (26) extending into the tooth at an angle greater than the third section (26). A root radius (30) connecting the fourth section (28) to the adjoining second section (24) of the adjacent form.
摘要:
A metal cutting insert (12) having a pair of cutting portions disposed on either side of a shank portion. Structure is formed on the metal cutting insert by which the insert is clamped to a tool holder which positions one of the cutting portions in a machining position. Each cutting portion includes a forward cutting edge (20) and two side cutting edges (22a, 22b). Each side cutting edge forms part of a shelf that includes chip controlling/breaking structure (50a, 50b, 50c). Each side cutting edge is defined by the juncture of a cutting surface with an upper boundary of a side face and the chip controlling structure includes a chip deflecting surface located adjacent the side cutting surface that includes a plurality of concave recesses that generate localized stiffening of a chip as it moves along the chip deflecting surface. The forward cutting edge performs cutting operations on a rotating workpiece in a radial direction.
摘要:
The invention relates to tools for the machining of materials by milling. The invention provides an improved form for a rotary cutting tool such as an end-mill, configured to extend tool life when increasing metal removal rates. The invention provides a rotary multi-tooth cutter (10), the cutting edge (18) of each tooth being provided along its length with a repeated waveform (20), comprising four substantially straight sections (22, 24, 26, 28) interconnected by radii (29), the first section (22) being identical with the unmodified cutting edge (18). The second section (24) adjoins the first section (22) into the tooth. The third section (26), adjoining the first section (22) on a side nearer the tool tip (16), extends at an angle (A) to the first section (22) into the tooth. The fourth section (28) is connected to the third section (26) extending into the tooth at an angle greater than the third section (26). A root radius (30) connecting the fourth section (28) to the adjoining second section (24) of the adjacent form.
摘要:
A metal cutting insert (12) having a pair of cutting portions disposed on either side of a shank portion. Structure is formed on the metal cutting insert by which the insert is clamped to a tool holder which positions one of the cutting portions in a machining position. Each cutting portion includes a forward cutting edge (20) and two side cutting edges (22a, 22b). Each side cutting edge forms part of a shelf that includes chip controlling/breaking structure (50a, 50b, 50c). Each side cutting edge is defined by the juncture of a cutting surface with an upper boundary of a side face and the chip controlling structure includes a chip deflecting surface located adjacent the side cutting surface that includes a plurality of concave recesses that generate localized stiffening of a chip as it moves along the chip deflecting surface. The forward cutting edge performs cutting operations on a rotating workpiece in a radial direction.
摘要:
A cutting insert (12) for a metalworking operation includes a polygonal body of hard wear resistant material. The body has a top surface (28) and a bottom surface (30), and therebetween a peripheral wall (36) including adjacent first and second wall portions (38 and 40). The intersection of the first wall portion (38) and the top surface (28) forms a first cutting edge (52), and the intersection of the second wall portion (40) and the top surface (28) forms a second cutting edge (48). The first cutting edge (52) and the second cutting edge (48) meet to form a high point (54) which is adapted to engage a workpiece first during the metalworking operation. In one embodiment, the top surface (28) of the cutting insert (12) has a topography that promotes chip control. The topography includes a plain (64) adjacent to the cutting edges (44), and a plateau (66) on the plain, which is located inward from the cutting edges (44). The plateau (66) is elevated relative to the plain (64) and has a sloped side (70).
摘要:
A bore slotting machine for cutting radially spaced longitudinal slots in sleeves for automotive power steering units comprising a cutting face adapted to operate within a bore of a component being worked; a motorised drive adapted to impart reciprocating motion to the cutting face; a positional feedback associated with the cutting face (10) and adapted to communicate with a computer; a chuck (12) adapted to hold a component being worked at a location adjacent the cutting face (10) and being supported for indexible rotational movement about a Y axis, substantially parallel to that of the bore in the component being worked; a first shuttle carriage (4) carrying the workholding device such shuttle being adapted for linear motion perpendicular to the bore axis of the component under the influence of a first servo drive (7); a second shuttle carriage (14) adapted to carry the cutting face (10) and associated motorised drive such that movement of the second carriage (14) achieves liner reversible relative motion between the component being worked and the cutting face (10) along an axis parallel to the bore axis; a second servo drive (15) for actuating the second shuttle carriage (14); a controlling computer for activating the cutting face drive and synchronising the first (7) and the second (15) servo drives with the position of the cutting face (10); each drive having a closed loop control system incorporating a feedback device.