摘要:
Schwingungsisolationssystem für eine Maschine der Masse (M M ) mit einer stationären Masse (m 1 ) und einer bewegten Masse (m 2 ). Die Basismasse (M B ) eines schweren Arbeitstisches (70) wird durch Einsatz von Aktoren (8), die über ein Feedforwardsystem (80) gesteuert werden, auf die Maße eines Interfaces (71) reduziert.
摘要:
A machine, for working wood panels (2) or similar, has an air-cushion table (13, 39, 41) for supporting at least one panel (2); the table (13, 39, 41) housing a chamber (13a), which communicates with the outside through a number of holes (16) formed through the table (13, 39, 41), and is connected pneumatically to a compressed-air source (S) for supplying the chamber (13a) with a given amount of compressed air, which is supplemented with an additional amount of outside air drawn in by at least one air-amplifying device (15).
摘要:
An air balance structure that compensates for the weight load of a movable member driven in a straight line along the vertical axis, with a simplified structure and at reduced cost. The box-shaped movable member has an open bottom that accommodates the stationary member therewithin, in which state the movable member is movably supported in the vertical direction by an air bearing created using a gap between the stationary member and the movable member. An air balance chamber that contains pressurized air is formed inside the movable member. After pressure-adjusted air is supplied from the outside to the gap from a jet port through a pipe inside the stationary member, the air flows into the air balance chamber. This flow seals the pressurized air inside the air balance chamber. Pressurized air exhaust is exhausted externally from an exhaust port through a pipe and a flow adjusting device.
摘要:
There is provided a lubricating method for a rolling bearing assembly capable of achieving a reliable lubrication and exhibiting a stable temperature rise. The method is for supplying a lubricant oil to the rolling bearing assembly during the operation thereof, in which in order to keep the temperature of a rolling bearing assembly (103) within a predetermined tolerance, the amount of the lubricant oil to be supplied during the operation is automatically or manually adjusted by means of a supply adjusting unit (102). Supply of the lubricant oil is performed in the form of an air/oil mixture by the use of a lubricant supply unit (101). The amount of the lubricant oil supplied varies depending on the rotational speed of the rolling bearing assembly (103). Change of the amount of the lubricant oil supplied depending on the rotational speed of the rolling bearing assembly (103) is carried out based on a result of sampling of data showing increase in temperature of the rolling bearing assembly (103) depending on the rotational speed thereof under a plurality of different lubricating conditions in which a different amount of the lubricant oil to be supplied is employed.
摘要:
A machine tool (1) is provided in which a movable member (30) guided by a hydrostatic slideway (21,31) is held in a predetermined attitude. A vertical machining center as the machine tool includes a spindle head (30) supported on a front face of a column (20) in a vertically movable manner. A hydrostatic slideway (21,31) for guiding the spindle head includes a slide rail (31) provided on the spindle head (30) and a slide guide (21) provided on the front face of the column (20). A pocket is provided in a lower end portion of a slideway of the slide guide on the side of the column. Pressurized oil is supplied into the pocket at a pressure which is gradually increased according to a downward movement distance of the spindle head from the uppermost position.
摘要:
A machine tool (10) comprising a base (12), with a guide surface, a workpiece holder on the base, a movable tool carriage (14) along with guide surfaces toward the workpiece. Hydrostatic bearings (54, 56) are situated in the carriage for discharging fluid, such as oil, into the narrow gap defined between the carriage and the guide surface.
摘要:
The present invention relates to an arrangement for compensating for dynamic effects of a slide mounted on a beam via an air gap. Input air pressure (Pin1 and Pin2) is delivered to the air gap. A bearing cushion arrangement (3, 4) compensates for the limited pressure rigidity of the air gap, by equalising air pressure in air gap (11, 12) between beam and bearing cushion arrangement, so as to compensate for rotation about the Y-axis.