Mechatronic drive module
AssigneeSMW-Autoblok Spannsysteme GmbH
InventorsEmanuel Wolf, Eckhard Maurer
Life of this patent
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Abstract
In order to create a mechatronic drive module as a replacement for a hydraulically operated piston, it is proposed that a piston and an axial unit be provided, wherein the piston is mounted non-rotatably, but longitudinally displaceably, with respect to the axial unit, whereas the axial unit is arranged rotatably in a housing, but immovably in the longitudinal direction. The two elements mesh via a gate, in which guide pins are guided and which has a control cam, which are inclined in the direction of a longitudinal axis. A rotation of the axial unit, which can be generated by means of an electric motor, is converted to a piston stroke based on the form of the control cam in the gate and the rotationally fixed mounting of the piston.
Claims15
A drive module, comprising a housing (2) and a piston (21) mounted non-rotatably, but longitudinally displaceably, with respect to the housing (2) in the direction of a longitudinal axis (6) for pressure or tension actuation of a clamping means,
- characterized in that the piston (21) is surrounded by an axial unit (8), which is mounted rotatably, but immovably in the direction of the longitudinal axis (6), wherein the axial unit (8) is actuated electromotively in the direction of rotation (7) and a gate (10) is embodied between the piston (21) and the axial unit (8), in which gate at least one guide pin (23) is guided along a control cam inclined in the direction of the longitudinal axis (6) to generate a piston stroke;
- characterized in that the axial unit (8) comprises two cam disks (9), which together form the gate (10), wherein the cam disks (9) are rotatably connected to each other with an interposition of at least one support sleeve (11).
A drive module, comprising a housing (2) and a piston (21) mounted non-rotatably, but longitudinally displaceably, with respect to the housing (2) in the direction of a longitudinal axis (6) for pressure or tension actuation of a clamping means,
- characterized in that the piston (21) is surrounded by an axial unit (8), which is mounted rotatably, but immovably in the direction of the longitudinal axis (6), wherein the axial unit (8) is actuated electromotively in the direction of rotation (7) and a gate (10) is embodied between the piston (21) and the axial unit (8), in which gate at least one guide pin (23) is guided along a control cam inclined in the direction of the longitudinal axis (6) to generate a piston stroke;
- characterized in that an electric motor (15) is assigned to the housing (2), which motor interacts with the toothed ring either directly or indirectly with the interposition of a gearing mechanism (16);
- characterized in that a microcontroller that is data-connected to force sensors for force control is assigned to the electric motor (15).
A drive module, comprising a housing (2) and a piston (21) mounted non-rotatably, but longitudinally displaceably, with respect to the housing (2) in the direction of a longitudinal axis (6) for pressure or tension actuation of a clamping means,
- characterized in that the piston (21) is surrounded by an axial unit (8), which is mounted rotatably, but immovably in the direction of the longitudinal axis (6), wherein the axial unit (8) is actuated electromotively in the direction of rotation (7) and a gate (10) is embodied between the piston (21) and the axial unit (8), in which gate at least one guide pin (23) is guided along a control cam inclined in the direction of the longitudinal axis (6) to generate a piston stroke;
- characterized in that a holding brake (17) is assigned to the toothed ring (18).
Dependencies are inferred from the claim text.