Integrated variable-axis free-bend forming apparatus for tubes

An integrated variable-axis free-bend forming apparatus for tubes, comprising:

• a base movement module (1), configured to adjust translational degrees of freedom of the apparatus along an X axis and a Y axis;
• a precision adjustment module (2), fixedly connected to the base movement module (1), and the precision adjustment module (2) being configured to switch a processing state of a bending processing module (4) to thereby adjust a number of processing axes of the apparatus;
• wherein the precision adjustment module (2) comprises:
• a main body installation module (23), two state switching modules (24), and two auxiliary adjustment modules (25);
• the main body installation module (23) comprises:
• a main body support plate (39), a cross roller bearing (40), a bending die installation seat (41), and a drive shaft (42);
• the main body support plate (39) of the main body installation module (23) is fixedly connected to the base movement module (1), the bending processing module (4) is disposed within the bending die installation seat (41), four side surfaces of the bending die installation seat (41) are sequentially defined as an RX side surface, an RY side surface, an A side surface, and a B side surface, the RY side surface of the bending die installation seat (41) is installed on the main body support plate (39) via the cross roller bearing (40), the two state switching modules (24) are respectively defined as an RX-axis state switching module and an RY-axis state switching module, the RX-axis state switching module is installed at the RX side surface of the bending die installation seat (41), the RY-axis state switching module is installed at the RY side surface of the bending die installation seat (41), the two auxiliary adjustment modules (25) are respectively disposed at the A side surface and the B side surface of the bending die installation seat (41), and a driven shaft (37) of each of the two auxiliary adjustment modules (25) is connected to the bending processing module (4);
• the drive shaft (42) is further fixedly installed at the RY side surface of the bending die installation seat (41);
• the cross roller bearing (40), an RY side plate of the bending die installation seat (41), the drive shaft (42), and the bending processing module (4) are sequentially arranged in that order along an axial direction of an output shaft of the RY-axis state switching module;
• and a position where the output shaft of the RY-axis state switching module is fixed to the drive shaft (42) is defined as a third position;
• wherein each of the two state switching module (24) comprises:
• a rotary motor (29), a rotary motor installation member (34), and an axial position control assembly;
• and the rotary motor installation member (34) is installed on a corresponding side surface of the bending die installation seat (41) via an axial position control assembly, the rotary motor (29) is fixedly installed in the rotary motor installation member (34), and the axial position control assembly is configured to adjust an axial displacement of the rotary motor (29) to switch a connection state of an output shaft of the rotary motor (29), thereby switching the processing state of the bending processing module (4);
• wherein each auxiliary adjustment module (25) comprises:
• a cylinder (38) and the driven shaft (37), an output shaft of the cylinder (38) is fixedly connected to the driven shaft (37), and the driven shaft (37) is connected to the bending processing module (4);
• a fixed guide module (3), configured to guide a straight tube blank (5);
• and
• the bending processing module (4), installed in the precision adjustment module (2), and the bending processing module (4) being configured to process the straight tube blank (5) to complete free-bend forming of the straight tube blank (5).