US 12,214,413 B2
Processing unit and processing machine for processing a workpiece wall of a workpiece, and method for producing such a processing unit
Udo Trautz, Bretten (DE); Alexander Muthny, Tiefenbronn-Lehningen (DE); and Matthias Kluge, Oelbronn-Duerrn (DE)
Assigned to FELSS Systems GmbH, Koenigsbach-Stein (DE)
Appl. No. 17/602,914
Filed by FELSS Systems GmbH, Koenigsbach-Stein (DE)
PCT Filed Apr. 28, 2020, PCT No. PCT/EP2020/061676
§ 371(c)(1), (2) Date Oct. 11, 2021,
PCT Pub. No. WO2020/229156, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 10 2019 112 547.2 (DE), filed on May 14, 2019.
Prior Publication US 2022/0184688 A1, Jun. 16, 2022
Int. Cl. B21J 5/12 (2006.01)
CPC B21J 5/12 (2013.01) 12 Claims
OG exemplary drawing
 
1. A processing unit for processing a workpiece wall of a workpiece (7), with relative movement of the workpiece (7) and the processing unit along a working axis (8) of the processing unit, with a forward stroke carried out by the processing unit in a forward stroke direction (9) of the processing unit towards the workpiece (7), and with a backward stroke carried out by the processing unit in a backward stroke direction (10) of the processing unit away from the workpiece (7), the processing unit comprising:
a machine tool (3) for processing the workpiece wall, wherein the machine tool (3) is in contact with the workpiece (7) during the forward stroke and during the backward stroke of the processing unit,
a tool support (4) which is provided for the machine tool (3), and which has a forward stroke bearing surface (11) pointing in the forward stroke direction (9), and a backward stroke bearing surface (13) which is spaced apart on the tool support (4) from the forward stroke bearing surface (11) of the tool support (4) in the backward stroke direction along the working axis (8) of the processing unit and which faces away from the forward stroke bearing surface (11) of the tool support (4) and points in the backward stroke direction (10), wherein the machine tool (3) is arranged in front of the forward stroke bearing surface (11) of the tool support in the forward stroke direction (9) and lies opposite the forward stroke bearing surface (11) of the tool support (4) along the working axis (8), wherein the machine tool (3) is supported on the forward stroke bearing surface (11) of the tool support (4) in the opposite direction of the forward stroke direction (9) during the forward stroke of the processing unit, and
wherein the tool support (4) has a threaded bolt (21) on the end of the tool support (4) positioned in the backward stroke direction (10) which threaded bolt (21) is provided with an external thread (20) and protrudes along the working axis (8), a clamping device (5) configured for clamping the machine tool (3) along the working axis (8) against the forward stroke bearing surface (11) of the tool support (4) and against the backward stroke bearing surface (13) of the tool support (4),
wherein the clamping device (5) comprises a tension element (14) which is structurally separate from the tool support (4), which extends along the working axis (8), and which is connected along the working axis (8) to the machine tool (3) on one end, and on the other end has an adjusting thread (19a) with which an adjusting element (15) of the clamping device (5) is in threaded engagement,
wherein, the adjusting element (15) of the clamping device (5) is opposite, along the working axis (8), the backward stroke bearing surface (13) of the tool support (4) facing away from the forward stroke bearing surface (11) of the tool support (4),
wherein the machine tool (3) is supported on the backward stroke bearing surface (13) of the tool support (4) in the opposite direction of the backward stroke direction (10) during the backward stroke of the processing unit via the tension element (14) and the adjusting element (15),
wherein the tension element (14) of the clamping device (5) can be subjected to tensile preload along the working axis (8), by means of a tensioning device (23) that comprises a tension member (27) and a support (25) having a threaded bore (24) with an internal thread,
wherein the tension element (14) of the clamping device (5) can be subjected to tensile preload along the working axis (8),
by loading the tension member (27) of the tensioning device (23) which tension member (27) is coupled to the tension element (14) of the clamping device (5) in the backward stroke direction (10) by means of a coupling device while the tool support (4) is supported on the support (25) of the tensioning device (23) in the backward stroke direction (10) by the internal thread of the threaded bore (24) of the support (25) of the tensioning device (23) being in threaded engagement with the external thread (20) of the threaded bolt (21) of the tool support (4),
by moving the adjusting element (15) into a target position on the tension element (14) along the working axis (8) by rotary actuation while the tension member (27) of the tensioning device (23) is loaded in the backward stroke direction (10), and
by cancelling the loading of the tension member (27) of the tensioning device (23) in the backward stroke direction (10) when the adjusting element (15) is arranged in the target position and thereby loading the backward stroke bearing surface (13) of the tool support (4), facing away from the forward stroke bearing surface (11) of the tool support (4), by the adjusting element (15) of the clamping device (5) along the working axis (8) in the direction of the machine tool (3),
and
wherein, when the tension element (14) of the clamping device (5) is preloaded along the working axis (8), the machine tool (3) is clamped along the working axis (8), against the forward stroke bearing surface (11) of the tool support (4) and against the backward stroke bearing surface (13) of the tool support (4), by means of the adjusting element (15) and the tension element (14) of the clamping device (5) subjected to tensile preload.