摘要:
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Schallemissionsanalyse, wobei während der Verwendung eines Bauteils, bei der Prüfung eines Bauteils oder während des Bearbeitens eines Werkstückes durch Zerspanen, Schweißen, Umformen, Fügen und/oder Trennen oder dergleichen entstehende Schwingungen erfasst und ausgewertet werden, wobei ein Schwingungsspektrum zu verschiedenen Zeiten oder kontinuierlich erfasst und einer mehrdimensionalen Auswertung unterworfen wird.
摘要:
Reference phase variation values σk1 to σKn, each of which is a variation among a plurality of phases that occur during non-machining and phase variation values σ1 to σn, each of which is a variation among a plurality of phases that occur during machining are detected from measured vibration with the use of a chattering detector that is used to calculate phases of a desired number (n) of frequencies. If σKi - σi is smaller than a determination value TK, it is determined that chattering having a frequency i is occurring.
摘要:
The damping property of a rear rolling bearing (133) is adjusted by controlling a damping force that is applied by damping application means (5, 134) based on, for example, the type of a tool (T). Thus, it is possible to provide the optimum damping properties for various tools that differ in natural vibration, and to suppress the generation of chattering of the various tools. As a result, it is possible to increase the cut amount per unit time to increase the productivity.
摘要:
The present invention relates to a tuned damped absorber support providing simultaneous energy dissipation in both horizontal and vertical directions. Rod (60) extends through a hole (52) in damper mass (40), and screws (9) extend through the mass (40) and are surrounded by springs (7).
摘要:
Method for reducing milling failure in a machining tool due to coincidence between first vibrations v1 substantially caused by mutually exerted forces between the machining tool and an object being machined, and second vibrations v2 substantially caused by mechanical resonance by or in the the machining tool itself and/or one or more subsystems of the machining tool. The method comprising the steps of detecting frequencies of v1 and the frequencies of v2; determining the extent of the coincidence between the frequencies of v1 and the frequencies of v2. If the extent of coincidence between the frequencies of v1 and at least one of any of the frequencies of v2 is within a certain range, the vibration causing said coincidence between the frequencies of v1 and at least one of any of the frequencies of v2 is counteracted. To counteract said coincidence the respective frequencies of v1 and v2 one or more machining parameters may changed or relevant vibrational characteristics of the machining tool itself are changed by means of passive or active components, e.g. actuators.
摘要:
The invention relates to a tool holder (10) for a tool that rotates about a rotational axis (D). Said holder comprises a clamping shaft (18), one end of which is provided with a clamping section (14) containing an opening (16) that is concentric with the rotational axis (D) and that receives a retaining shaft of the tool. At least one clamping surface is provided on the peripheral casing of the opening (16) for securing the retaining shaft of the tool in a press fit. According to the invention, an axial section of the tool holder (10) that forms an axial tensioning section (VA) has a tensioning assembly (20), which exerts a tensioning force (Vk) with a tensioning force component (Vk) that acts in the axial direction on the tool holder (10) at least during the operation of the latter (10).
摘要:
Die Erfindung bezieht sich auf ein Verfahren sowie eine Vorrichtung zur Schwingungsdämpfung in einer Werkzeugmaschine mit zumindest einer zumindest eine Tasche 1 aufweisenden hydrostatischen Führung 8 zur Lagerung eines ersten Bauteils 9 an einem zweiten Bauteil 10, durch welche ein Ölstrom mit vorgegebenem Volumenstrom und vorgegebenem Druck durchgeleitet wird und durch zumindest einen Spalt 3 austritt, dadurch gekennzeichnet, dass in Abhängigkeit von den auftretenden Belastungen zur Erzielung einer konstanten Breite des Spalts 3 der Ölstrom durch den Spalt 3 geregelt wird.