Machine tool
AssigneeGROB-WERKE GmbH & Co. KG
InventorH.C. Burkhart Grob
Life of this patent
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Abstract
The present invention relates to a machine tool having a motor spindle for the rotative actuation of a tool about a spindle axis. The motor spindle is supported by a stand, a turning bearing being provided at the stand, and the motor spindle is pivotable and positionable about a first turning axis at the turning bearing. A linear guide is provided at the motor spindle, which enables a linear movement of the tool parallel to the spindle axis by a controllable linear actuator. During machining, an overlay of rotary movement and linear movement is provided.
Claims15
A machine tool for machining a workpiece (9), wherein the machine tool (1) has a motor spindle (2) for the rotative actuation of a tool about a spindle axis (20), and the motor spindle (2) is supported by a stand (3), wherein a turning bearing (4) is provided at the stand (3), and the motor spindle (2) at the turning bearing (4) is pivotable and positionable about a first turning axis (A) by a controllable turning actuator (44), and a linear guide (21) is provided at the motor spindle (2), which enables an advancing movement of the tool parallel to the spindle axis (20) by a linear actuator, and the rotary movement and the linear movement are overlaid during machining.
The machine tool according to one of the preceding claims, characterized in that the turning axis (A) is located in the vicinity of the tool holder of the retracted motor spindle (2).
The machine tool according to one of the preceding claims, characterized in that the turning axis (A) and the spindle axis (20) are oriented at an angle, in particular at a right angle to each other.
The machine tool according to one of the preceding claims, characterized in that, in addition to the first motor spindle, at least one further motor spindle (2) is disposed, which is pivotable and positionable about the first turning axis (A) at the turning bearing (4).
The machine tool according to one of the preceding claims, characterized in that the respective spindle axes of the at least two motor spindles are oriented parallel to each other.
The machine tool according to one of the preceding claims, characterized in that an adjusting device is provided to adjust the distance between the motor spindles.
The machine tool according to one of the preceding claims, characterized in that a spindle bed (22) pivotable and positionable about the first turning axis (A) is provided at the turning bearing (4) and the motor spindle (2) is mounted via the linear guide (21) in the direction of the spindle axis (20) on or at the spindle bed (22).
The machine tool according to one of the preceding claims, characterized in that the spindle bed (22) accommodates at least two motor spindles and/or a common linear actuator is provided for the at least two motor spindles or respectively one own linear actuator is provided for each of the at least two motor spindles.
The machine tool according to one of the preceding claims, characterized in that the spindle bed (22) is configured in a cage- or tunnel-like manner, in particular, in an integral or flexurally stable manner.
The machine tool according to one of the preceding claims, characterized in that the bearing element (42) of the turning bearing (4) is situated at the front, in particular, lower spindle bed end (29).
The machine tool according to one of the preceding claims, characterized in that the spindle bed (22) has clamping surfaces at the spindle bed end lying opposite of the bearing element (42).
The machine tool according to one of the preceding claims, characterized by a center position of the spindle axis (20) pivotable about the turning axis (A) of the turning bearing (4), in which the spindle axis (20) is parallel to the first linear axis (Z) and is pivotable and positionable in a pivot range of −25° to +100°, preferably of −20° to +95°, particularly preferably of −15° to +90°, vis-à-vis this center position.
The machine tool according to one of the preceding claims, characterized in that the turning bearing (4) has an arc-shaped, in particular integrally formed, clamping segment (41), which is used for the purpose of fixing the clamping surface (50) of the spindle bed (22) at the clamping segment (41) with aid of a clamping device (5), and/or that at least one, preferably two screw ball drives (46) actuatable by respectively one actuator (45), which engage laterally at the spindle bed (22), are provided as turning actuator (44).
The machine tool for machining a work tool (9), wherein the machine tool (1) has a motor spindle (2) for the rotative actuation of a tool about a spindle axis (20), and the motor spindle (2) is supported by a stand (3), wherein a turning bearing (4) is provided at the stand (3), and the motor spindle (2) mounted on a spindle bed (22) is pivotable and positionable at the turning bearing (4) about a first turning axis (A), and a linear guide (21) is provided at the motor spindle (2), which enables an advancing movement of the tool parallel to the spindle axis (20), and the spindle bed (22) is configured in a cage- or tunnel-like manner, in particular, in an integral or flexurally stable manner, wherein the spindle bed (22) has clamping surfaces at the spindle bed end lying opposite of the bearing element (42) of the turning bearing (4), and the turning bearing (4) has an arc-shaped, in particular, integrally molded clamping segment (41) which is used for the purpose of fixing the clamping surface (50) of the spindle bed (22) at the clamping segment (41) with aid of a clamping device (5).
Dependencies are inferred from the claim text.