摘要:
Bei einer Bohrmaschine (1) zum Herstellen einer hochpräzisen Bohrung sowie einem Verfahren zum Herstellen einer hochpräzisen Bohrung in einem Werkstück schlägt die Erfindung vor, dass die Bohrmaschine eine das Bohrwerkzeug tragende Spindel (2) aufweist, ein so genannter Hauptantrieb vorgesehen ist, mittels welchem die Spindel sowohl drehend als auch mit einem axialen Vorschub angetrieben ist, und ein so genannter Nebenantrieb vorgesehen ist, mittels welchem die Spindel in axialer Richtung oszillierend, der Vorschubbewegung überlagert angetrieben ist, wobei der Nebenantrieb ein erstes Element mit wellenförmiger Oberfläche (8) aufweist, welches gegenüber einem zweiten Element des Nebenantriebs beweglich ist, derart, dass bei einer Relativbewegung des ersten und des zweiten Elements zueinander ein Element den Wellenbergen und Wellentälern des anderen Elements folgend oszillierend angetrieben ist und diese Oszillationsbewegung auf die Spindel übertragen wird, und wobei beide Elemente des Nebenantriebs angetrieben sind, derart, dass die Relativbewegung dieser beiden Elemente zueinander höchstens 30% der Drehzahl der Spindel beträgt.
摘要:
A boring device including a main shaft which is rotated by a driving source 10 and includes an inner path 12a and an outer path 12b which has a double tube structure, wherein a drill 30 which has a venting hole 33 on a axial center extending from a shank 31b to the proximity of a blade 32 and hoods 17, 14which cover an outer periphery of the drill are provided at a front end of a double tube main shaft. An air-feeding mechanism 40 which supplies a compressed air to the inner path 12a and a dust collecting mechanism 50 which sucks an air in the outer path 12b are connected to a rear end of the double tube main shaft 12. A work piece is bored while the compressed air is supplied around a drill blade via the inner path 12a so that swarf generated is recovered to the dust collecting mechanism 50 via the outer path 12b.
摘要:
The present invention relates to an axial machining device (1), which comprises a tool-holder spindle (3) rotating inside a frame (2), the latter housing a transmission system (5) causing the automatic advance of the spindle relative to the frame (2) during the rotation of the tool-holder spindle, said transmission system (5) comprising an advance pinion (15) screwed onto the spindle (3), said device being characterised in that it includes an elastic return member (40) biasing the advance pinion (15) in a first axial direction, preferably opposite the advance direction (A) of the spindle (3), and in that said device comprises a first bearing (50) comprising bearing members (51) rolling on a corrugated bearing surface having an axial component, such as to periodically bias the advance pinion (15) to move in a second direction opposite the first direction, such that the rotation of the spindle (3) is accompanied by an axial vibration movement.
摘要:
The invention relates to a modular drilling tool (1) having a carrier body (2) and a cutting unit (16) attached thereto, wherein the carrier body (2) extends along a carrier body longitudinal axis (Z), which is configured substantially cylindrical to a carrier body radius (Tr) and has a chip flute (6) and a discharge edge (8) extending along the chip flute (6). The chip flute (6) extends toward the discharge edge (8) in a convexly curved manner such that - viewed in a cross-sectional view perpendicular to the carrier body longitudinal axis (Z) - a J-shaped chip flute (6) having a chamfer (18) is formed, and an acute advance angle (W) is formed between a chip flute tangent (T) on the discharge edge (8) and a radial (R) touching a groove base in the region of the chamfer (18) at a tangent point (P), thus leading to improved chip guidance in the chip flute.
摘要:
The invention relates to a modular drilling tool (1) having a carrier body (2) and a cutting unit (16) attached thereto, wherein the carrier body (2) extends along a carrier body longitudinal axis (Z), which is configured substantially cylindrical to a carrier body radius (Tr) and has a chip flute (6) and a discharge edge (8) extending along the chip flute (6). The chip flute (6) extends toward the discharge edge (8) in a convexly curved manner such that - viewed in a cross-sectional view perpendicular to the carrier body longitudinal axis (Z) - a J-shaped chip flute (6) having a chamfer (18) is formed, and an acute advance angle (W) is formed between a chip flute tangent (T) on the discharge edge (8) and a radial (R) touching a groove base in the region of the chamfer (18) at a tangent point (P), thus leading to improved chip guidance in the chip flute.
摘要:
Ein Verfahren zum spanenden Bearbeiten eines Durchgangslochs (20) in einem Werkstück (2) mit einem spanenden Werkzeug, dadurch gekennzeichnet, dass auf der dem Werkzeug abgewandten Seite des Werkstücks (2) eine Kappe (1) zum Auffangen von durch das Durchgangsloch (20) fallenden Spänen angesetzt wird sowie eine Auffangkappe (1) zum Auffangen von bei einer spanenden Bearbeitung einer Durchgangsbohrung (20) eines Werkstücks (2) anfallenden Spänen mit einem Auffangtopf (11,12,13) zum Auffangen der Späne und mit Mitteln (14) zur Befestigung der Auffangkappe (1) am Werkstück (2).
摘要:
The invention concerns a perforating device comprising a cutting tool (10), means for rotating (11) the cutting tool (10) and means for translating (12, 14) the cutting tool (10), the ratio between the rotational speed and the translational speed being variable during rotation of the cutting tool (10). It comprises a gear train (16, 17; 18, 19) for synchronizing the rotating means (11) with the translating means (12, 14). The speed ratio between a driving pinion (16; 18) of the gear train, rotationally linked to the means (11) for rotating the cutting tool (10) and a transmission pinion (17; 19) of the translating means is reversed at least once during one rotation of the cutting tool (10). The invention is useful for fragmenting the resulting shavings.
摘要:
In order to effect drilling without any risk of blockage of the cutting tool used, a drilling device uses means for producing a self-maintained axial vibration of the tool that has the effect of breaking up the swarf of the material removed from the hole in order to facilitate discharge thereof. The means for producing the self-maintained axial vibration are also such that the spindle of the tool can have a direction substantially different from the rotation axis of the means used for rotating the tool. Such a device is particularly advantageous for producing deep holes or during the use of cutting tools producing asymmetric cutting forces. In a particularly advantageous embodiment, the means for producing the self-maintained axial vibration and for enabling the rotation axis of the tool to have a direction substantially different from the rotation axis of the drive means form part of the cutting tool.
摘要:
A tool holder assembly and method for intentionally inducing modulation in a machining process. The tool holder assembly is configured for mounting in a tool block on a machining apparatus and includes a tool holder body configured to be secured to the tool block of the machining apparatus, a tool holder mounted on the tool holder body and configured for securing a cutting tool thereto, and a device for imposing a superimposed modulation on the tool holder so as to move the cutting tool relative to the tool holder body and thereby relative to the tool. The tool holder assembly is useful in a process for producing chips having a desired shape and size, and particularly to a method of controllably producing nanocrystalline chips.