摘要:
The invention relates to a rock drilling machine and a method of lubricating a shank of the rock drilling machine. The rock drilling machine (4) comprises a rotatable shank (6) for connecting a drilling tool (7). The shank is rotated by a rotating sleeve (14) arranged around the shank. Gears (43, 44) are arranged between the shank and the rotating sleeve. The rock drilling machine is provided with a lubricating system (23) for lubricating the gears and also bearings (15) of the rotating sleeve.
摘要:
A multi-spindle lathe comprising a machine frame (12), a spindle drum (14), which is arranged in the machine frame (12), is rotatable about a spindle drum axis (16) and is made up at least partially of segments (80) cut out from flat material in a stacking direction (82) parallel to the spindle drum axis (16) and made to extend in stack planes (88) transversely in relation to the stacking direction (82), which segments have mutually overlapping receiving cutouts (90) and cooling channel cutouts (92, 96, 106), and so the spindle drum (14) has spindle motor receptacles (30) for spindle motors (32) and a cooling channel system (120, 130, 180) that is separated from said spindle motor receptacles by wall webs (98), characterized in that the cooling channel system has a number of subchannel systems (120, 130, 180), fed in parallel, for a liquid cooling medium.
摘要:
A cooling passage through which a cooling medium can flow is formed between the inner peripheral surface of a rear housing, and the outer peripheral surface of a bearing sleeve having a free-side bearing inserted therein. The cooling passage is formed in the outer peripheral surface of the bearing sleeve, and comprises one or a plurality of helical grooves formed in the outer peripheral surface of the sleeve from one-end side of the sleeve in the axial direction to another-end side of the sleeve in the axial direction. The housing is provided with: a supply port which communicates with one end of the helical grooves, and through which the cooling medium is supplied; and a discharge port which communicates with another end of the helical grooves, and through which the cooling medium that has flowed through the cooling passage is discharged.
摘要:
Mehrspindeldrehmaschine umfassend ein Maschinengestell (12), eine in dem Maschinengestell (12) angeordnete und um eine Spindeltrommelachse (16) drehbare Spindeltrommel (14), die zumindest teilweise aus in einer zur Spindeltrommelachse (16) parallelen Stapelrichtung (82) aus Flachmaterial ausgeschnittenen und sich in Stapelebenen (88) quer zur Stapelrichtung (82) erstreckenden Segmenten (80) mit einander überlappenden Aufnahmeausschnitten (90) und Kühlkanalausschnitten (92, 96, 106) aufgebaut ist, so dass die Spindeltrommel (14) Spindelmotoraufnahmen (30) für Spindelmotoren (32) und ein von dieser durch Wandstege (98) getrenntes Kühlkanalsystem (120, 130, 180) aufweist, dadurch gekennzeichnet, dass das Kühlkanalsystem mehrere parallel gespeiste Teilkanalsysteme (120, 130, 180) für ein flüssiges Kühlmedium aufweist, und dass die Teilkanalsysteme (120, 130, 180) das flüssige Kühlmedium in einen die Spindeltrommel (14) umschließenden Ringraum (170) für Kühlmedium abgeben.
摘要:
A cooling gas is fed from an ejection nozzle into the interior of a through-hole which is formed in a radially central portion of a main spindle, and which penetrates through said main spindle in an axial direction. The cooling gas passes through radial venting holes provided in a plurality of locations, in the circumferential direction, in an axially intermediate portion of the main spindle, is fed into axial venting holes provided in a plurality of locations, in the circumferential direction, extending from one axial-direction end of the main spindle to an intermediate portion thereof, is caused to flow through the axial venting holes, and is discharged from discharge holes.
摘要:
In this bearing device (10), a bearing space (S1), formed between an inner race (14) and an outer race (15) of an angular ball bearing (11), and a lubricant reservoir (S2) of an outer ring spacer (12) arranged adjacently to the angular ball bearing (11) communicate with each other. In the bearing space (S1), a lubricant such as grease (G) is sealed, and in the lubricant reservoir (S2), a wax-based lubricant (W) is sealed which contains a lubricant and a wax and which, at a liquefaction point, i.e., a certain temperature in the temperature range 10-70°C, changes between a liquid state, in which the liquefaction point has been exceeded, and a semi-solid state, in which the liquefaction point has not been exceeded.
摘要:
The invention relates to a rock drilling machine and a method of lubricating a shank of the rock drilling machine. The rock drilling machine (4) comprises a rotatable shank (6) for connecting a drilling tool (7). The shank is rotated by a rotating sleeve (14) arranged around the shank. Gears (43, 44) are arranged between the shank and the rotating sleeve. The rock drilling machine is provided with a lubricating system (23) for lubricating the gears and also bearings (15) of the rotating sleeve.
摘要:
A spindle device for supplying an air for cleaning and a coolant for cooling or lubricating, comprising: a tool holder (11) having a coolant passage (22) through which a coolant is supplied; a spindle (10) having a support surface (26) formed at the front portion thereof for accepting the tool holder (11); a drawing bolt (25) having a through-hole for supplying an air or a coolant and movably arranged in the spindle (11) for claming or unclamping the tool holder (11) accepted on the support portion (26) of the spindle (11); and a pull stud (12) attached on the tool holder (11) and provided with a valve (13), the valve (13) being located in association with the coolant passage (22) and the through-hole, the valve (13) being so constructed as to open or close according to the movement of the drawing bolt (25) in such a manner that the valve (13) opens so as to connect the through-hole to the coolant passage (22) when the tool holder (11) is clamped, whereas the valve (13) temporarily closes so as to shut the connection between the through-hole and the coolant passage (22) when the tool holder (11) is unclamped, wherein a coolant can be supplied from the through-hole to the coolant passage (22) via the valve (13) when the tool holder (11) is clamped, whereas an air can be supplied from the through-hole by bypassing the coolant passage (22) when the tool holder (11) is unclamped.