一种天车式龙门加工中心
The overhead crane-type gantry machining center, with its dual-beam parallel control and modular assembly, solves the problems of short travel and slow speed of traditional gantry machine tools, enabling efficient, high-speed, and high-precision machining of large workpieces and supporting multi-task parallel operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HIMILE CNC MASCH TOOL (SHANDONG) CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional gantry machining centers have short travel distances, slow speeds, and poor multitasking capabilities, making them unable to meet the processing needs of large workpieces. They also have poor dynamic performance, high accuracy decay, and cannot perform parallel operations.
It adopts parallel control of dual crossbeams, modular splicing long stroke and full direct drive three-axis drive, and achieves high-speed and high-precision motion by splicing columns and worktable, combined with direct drive motor and grating ruler closed-loop control.
It enables efficient processing of large workpieces, supports simultaneous processing of multiple workpieces, improves processing efficiency and accuracy, reduces energy consumption and extends equipment life.
Smart Images
Figure CN224509015U_ABST
Abstract
Claims
1. A gantry machining center of the overhead crane type, characterized in that, include: A multi-section, modular workbench (40) fixed to the ground; Multi-section, connectable columns (10) located on both sides of the workbench (40); Two independently controlled crossbeams (20) spanning above the two side columns (10); A saddle (50) connecting the crossbeam (20) and the column (10); A box-type Z-axis (30) is mounted on the crossbeam (20), the box-type Z-axis (30) includes a box (31) and a Z-axis square slide block (32) nested therein; A first direct drive motor (60) drives the crossbeam (20) to move along the Y-axis direction; A second direct drive motor (70) drives the housing-type Z-axis (30) to move along the X-axis direction; A third direct drive motor (80) drives the Z-axis square slide block (32) to move along the Z-axis direction.
2. The gantry machining center according to claim 1, characterized in that, The splicing end of the column (10) is provided with a positioning groove (12). The two adjacent columns (10) are positioned in the Y-axis direction by the positioning block embedded in the positioning groove (12). The two columns (10) are fastened together by bolts.
3. The gantry machining center according to claim 2, characterized in that, The column (10) is assembled by welding two first splicing plates (14), two second splicing plates (16), a bottom plate (15) and a top plate (11). The top plate (11) is fixedly set on the top of the two first splicing plates (14), and the two second splicing plates (16) are fixedly set at both ends of the two first splicing plates (14). The positioning groove (12) is set at one end of the top plate (11). The first splicing plate (14) is provided with a square hole (13), and the column (10) is provided with a stiffening plate (13a).
4. The gantry machining center according to claim 3, characterized in that, The saddle (50) is fixed to the bottom of the crossbeam (20). A first direct drive motor (60) is provided at the bottom of the saddle (50). The mover of the first direct drive motor (60) is fixedly installed at the bottom of the saddle (50), and the stator of the first direct drive motor (60) is fixed on the top plate (11). A slider (52) is fixed on the bottom surface of the saddle (50). An adjusting pad (51) is installed between the slider (52) and the saddle (50) to adjust the magnetic gap between the mover of the first direct drive motor (60) and the stator of the first direct drive motor (60). Two sets of linear guide rails (19) are installed on the top plate (11) and distributed on both sides of the stator of the first direct drive motor (60). The slider (52) is slidably installed on the linear guide rails (19).
5. The gantry machining center according to claim 1, characterized in that, The crossbeam (20) is a "U"-shaped box structure with a hollow interior. The crossbeam (20) has reinforcing ribs inside and a through-hole (22) in the middle for mounting the box-type Z-axis (30).
6. The gantry machining center according to claim 5, characterized in that, The second direct drive motor (70) is disposed inside the crossbeam (20). There are two second direct drive motors (70). The stators of the two second direct drive motors (70) are respectively fixed on the two side walls of the mounting cavity (22) along the length direction. The movers of the two second direct drive motors (70) are respectively fixed on the two side surfaces of the box-type Z-axis (30). Two X-axis guide rails (21) are fixed on the top surface of the crossbeam (20). The X-axis guide rails (21) are symmetrically arranged with respect to the box-type Z-axis (30). Saddles (34) are fixed on both sides of the box-type Z-axis (30). The saddles (34) are slidably mounted on the X-axis guide rails (21).
7. The gantry machining center according to claim 1, characterized in that, The Z-axis square slide block (32) is slidably inserted into the housing (31), the housing (31) is hollow inside and is provided with reinforcing ribs.
8. The gantry machining center according to claim 1, characterized in that, The stator of the third direct drive motor (80) is fixed on the housing (31) and extends vertically. The mover of the third direct drive motor (80) is fixed on the Z-axis square slide block (32). A Z-axis guide rail (33) is fixed on the Z-axis square slide block (32). The Z-axis guide rail (33) extends along the Z-axis direction. A guide block is provided inside the housing (31). The guide block slides in cooperation with the Z-axis guide rail (33).
9. The gantry machining center according to claim 1, characterized in that, The Z-axis square slide block (32) is provided with balance cylinders (35) on both sides.
10. The gantry machining center according to claim 1, characterized in that, The first direct drive motor (60), the second direct drive motor (70) and the third direct drive motor (80) are all linear motors, and each axis is equipped with a grating ruler (17) to achieve closed-loop control.