Multi-axial numerical control double-head edge milling machine

Abstract

The utility model relates to the technical field of edge milling machines, and discloses a multi-axial numerical control double-head edge milling machine which comprises a workbench, a portal frame, a transverse and vertical moving device and a milling device, the gantry frame is arranged on the workbench; the transverse and vertical moving device is installed on the portal frame. The transverse and vertical moving device comprises a transverse lead screw sliding assembly. The portal frame comprises supporting columns, cross beams and bevel angle columns. The two supporting columns are connected to the workbench in a spaced mode. Two ends of the cross beam are respectively connected with the upper ends of the two struts; the cross beam is provided with a lead screw installation groove used for installing the transverse lead screw sliding assembly. The oblique angle column is connected with the lower end of the strut. According to the multi-axial numerical control double-head edge milling machine, the bevel angle columns are connected with the lower ends of the supporting columns to form a triangular stable structure, the overall rigidity of the portal frame is effectively improved, the bearing capacity of the portal frame is enhanced, machining precision reduction or equipment damage caused by insufficient bearing capacity is avoided, and compared with a traditional straight-rod type portal frame, the edge milling machine is firmer and more stable. And the equipment stability is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of edge milling machine technology, and in particular to a multi-axial CNC double-head edge milling machine. Background Technology

[0002] Traditional milling machines mostly adopt a straight column gantry structure. While this can meet basic processing needs, its stability and load-bearing capacity often become limiting factors when dealing with large workpieces or high-precision machining. Especially in the precision control of the horizontal and vertical movement devices and the milling device, the straight column gantry structure is easily affected by external forces, resulting in slight deformation and thus affecting the machining accuracy.

[0003] For example, Chinese patent CN201922125534.8 discloses a novel double-head gantry milling machine, including a novel gantry milling machine body, a gantry frame, and a milling head mechanism. The novel gantry milling machine body has a base at its bottom, ball bearings on its upper surface, and two Z-axis motors symmetrically positioned at one end of the base. Gantry frame columns A and B are symmetrically positioned on both sides of the base, and a gantry frame is positioned between gantry frame columns A and B. The milling head mechanism is located inside the gantry frame. However, this novel double-head gantry milling machine uses gantry frame columns A and B to form a straight-column gantry frame structure. This straight-column gantry frame structure has poor load-bearing capacity for the milling head mechanism. During production, the structure is not stable enough and is prone to reduced machining accuracy or equipment damage due to insufficient load-bearing capacity. Utility Model Content

[0004] The purpose of this invention is to overcome the problems of the prior art and provide a multi-axial CNC double-head milling machine.

[0005] To achieve the above objectives, the present invention adopts the following solution:

[0006] A multi-axis CNC double-head milling machine includes a worktable, a gantry frame, a horizontal and vertical moving device, and a milling device; the gantry frame is mounted on the worktable; the horizontal and vertical moving device is mounted on the gantry frame; the milling device is connected to the horizontal and vertical moving device and can move relative to the worktable in the up-down and left-right directions through the horizontal and vertical moving device; the horizontal and vertical moving device includes a horizontal lead screw sliding assembly;

[0007] The gantry frame includes:

[0008] Supports, two of which are connected at intervals to the workbench;

[0009] A crossbeam, with its two ends connected to the upper ends of the two aforementioned supports respectively; the crossbeam has a screw mounting groove for mounting the transverse screw sliding assembly;

[0010] An angled column, which is connected to the lower end of the support column.

[0011] Furthermore, the two support pillars are spaced apart on the left and right sides of the workbench; the upper right side of the left support pillar and the upper left side of the right support pillar are both provided with angled supports that connect to the bottom surface of the crossbeam.

[0012] Furthermore, the oblique column has an inclined surface that is inclined downwards; the angle between the bottom surface of the oblique column and the inclined surface is 45°-75°.

[0013] Furthermore, the inclined surface is the front side surface of the angled column;

[0014] The gantry also includes a gantry base plate connected to the bottom surface of the angled column.

[0015] Furthermore, the support column, the corresponding angled column, and the angled branch are integrally formed.

[0016] Furthermore, the gantry frame is made of steel.

[0017] Furthermore, the horizontal and vertical moving device includes a horizontal moving device and a vertical moving device; the horizontal moving device includes a horizontal drive motor and the lead screw sliding assembly; the lead screw sliding assembly includes a lead screw, a slide block, and a horizontal guide rail; the lead screw is rotatably mounted in the lead screw mounting groove;

[0018] The transverse drive motor is located in the lead screw mounting slot; the conveying shaft of the transverse drive motor is connected to the lead screw; the slide block is slidably connected to the lead screw and reciprocates along the length direction of the lead screw under the drive of the transverse drive motor; the slide block is also slidably connected to the transverse guide rail connected to the gantry frame.

[0019] The vertical moving device is connected to the slide; the milling device is connected to the vertical moving device.

[0020] Furthermore, the milling device has two parts; the two milling devices are arranged side by side and connected to the horizontal and vertical moving device through a connected plate frame.

[0021] Furthermore, the milling device includes a milling motor connected to the integrated plate frame and a spindle milling assembly connected to the milling motor.

[0022] Compared with existing technologies, this utility model has the following advantages:

[0023] 1. This utility model improves the gantry frame based on the worktable, gantry frame, horizontal and vertical moving device, and milling device. The gantry frame is formed by setting up supports, beams, and angled columns. First, the angled columns are connected to the lower ends of the supports to form a triangular stable structure, effectively improving the overall rigidity of the gantry frame. This design not only enhances the equipment's anti-tilting ability but also significantly improves stability under heavy load or high-speed machining conditions. Second, the introduction of angled columns significantly improves the load-bearing capacity of the gantry frame, ensuring stable operation even when machining large or heavy workpieces and avoiding decreased machining accuracy or equipment damage due to insufficient load-bearing capacity. Compared to traditional straight-rod gantry frames, this is more robust, greatly improving equipment stability. Furthermore, the angled columns, as a stabilizing structure, provide more solid support for the horizontal and vertical moving device, reducing machining errors caused by structural deformation. This makes the multi-axis CNC double-head milling machine more reliable when machining high-precision parts.

[0024] 2. This utility model designs a screw mounting groove on the crossbeam for installing the transverse screw sliding assembly, which facilitates the stable installation of the transverse screw sliding assembly, enhances the stability of the horizontal and vertical moving device on the gantry, and reduces the machining error of the milling device caused by the unstable movement of the horizontal and vertical moving device. Attached Figure Description

[0025] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] Figure 1 This is one of the three-dimensional structural schematic diagrams of the multi-axial CNC double-head milling machine of this utility model.

[0027] Figure 2 This is the second three-dimensional structural schematic diagram of the multi-axial CNC double-head milling machine of this utility model.

[0028] Figure 3 This is an exploded three-dimensional structural diagram of the multi-axial CNC double-head milling machine of this utility model.

[0029] Figure 4 This is a three-dimensional structural diagram of the gantry frame of this utility model.

[0030] Figure 5 This is a structural schematic diagram of the gantry frame of this utility model.

[0031] The image includes:

[0032] Workbench 1, Gantry 2, Support column 21, Crossbeam 22, Screw mounting groove 221, Angled column 23, Inclined surface 231, Angled support 24, Gantry base plate 25, Horizontal and vertical moving device 3, Horizontal moving device 31, Horizontal drive motor 311, Screw sliding assembly 312, Screw 3121, Slide 3122, Horizontal guide rail 3123, Vertical moving device 32, Milling device 4, Milling motor 41, Spindle milling assembly 42, Integrated plate frame 5. Detailed Implementation

[0033] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0034] like Figures 1 to 5 As shown, a multi-axis CNC double-head milling machine includes a worktable 1, a gantry frame 2, a horizontal and vertical moving device 3, and a milling device 4; the gantry frame 2 is mounted on the worktable 1. The gantry frame 2 is made of steel, specifically stainless steel, and has good rigidity and strength. The horizontal and vertical moving device 3 is mounted on the gantry frame 2. The milling device 4 is connected to the horizontal and vertical moving device 3 and can move relative to the worktable 1 in the up-down and left-right directions through the horizontal and vertical moving device 3; thus, mounting the horizontal and vertical moving device 3 on the gantry frame 2 ensures that the milling device 4 can move flexibly in the up-down and left-right directions to meet diverse processing needs, realizing the movement of the milling device 4 in two axial directions, namely, lateral and longitudinal axial movement. The horizontal and vertical moving device 3 includes a horizontal lead screw sliding assembly 312; the gantry frame 2 includes a support column 21, a crossbeam 22, and an angled column 23. Among them, two of the support columns 21 are connected to the worktable 1 at intervals to provide stable longitudinal support. The two ends of the crossbeam 22 are respectively connected to the upper ends of the two supports 21; the crossbeam 22 has a screw mounting groove 221 for installing the transverse screw sliding assembly 312; the design of the screw mounting groove 221 facilitates the stable installation of the transverse screw sliding assembly 312, enhances the stability of the horizontal and vertical moving device 3 on the gantry 2, and reduces the machining error of the milling device 4 caused by the unstable movement of the horizontal and vertical moving device 3. The angled column 23 is connected to the lower end of the support 21. The design of the angled column 23 is a major highlight of this utility model. Compared with the traditional straight column structure, the angled column 23 effectively disperses the stress generated by the equipment during processing through its unique inclination angle, making the entire gantry 2 structure more stable and significantly enhancing its load-bearing capacity.

[0035] Based on the worktable 1, gantry 2, horizontal and vertical moving device 3, and milling device 4, the gantry 2 is improved by setting up a support column 21, a crossbeam 22, and an angled column 23 to form the gantry 2. First, the angled column 23 is connected to the lower end of the support column 21 to form a triangular stable structure, which effectively improves the overall rigidity of the gantry 2. This design not only enhances the anti-tilting ability of the equipment, but also significantly improves the stability under heavy load or high-speed processing conditions. Second, the introduction of the angled column 23 significantly improves the load-bearing capacity of the gantry 2. Even when processing large or heavy workpieces, it can ensure the stable operation of the equipment and avoid the decrease in processing accuracy or equipment damage caused by insufficient load-bearing capacity. Compared with the traditional straight rod gantry 2, it is more robust and greatly improves the stability of the equipment. Furthermore, the angled column 23, as a stabilizing structure, provides more solid support for the horizontal and vertical moving device 3 and reduces processing errors caused by structural deformation. This makes the multi-axis CNC double-head milling machine more reliable when processing high-precision parts.

[0036] To further enhance the support stability of the gantry 2, thereby improving its stability under heavy load or high-speed machining conditions, two support columns 21 are spaced apart on the left and right sides of the workbench 1. An angled support 24, connected to the bottom surface of the crossbeam 22, is provided on the right side of the upper end of the left support column 21 and the left side of the upper end of the right support column 21. By designing the angled support 24 and its positional relationship on the two support columns 21 and the crossbeam 22, a good triangular reinforcing rib structure is formed, further strengthening the connection between the support columns 21 and the crossbeam 22, thus further enhancing the support stability of the gantry 2. This ensures stable operation of the equipment and avoids decreased machining accuracy or equipment damage due to insufficient load-bearing capacity. Compared to the traditional straight-bar gantry 2, it is more robust and greatly improves equipment stability.

[0037] Preferably, the angled column 23 has a downwardly inclined surface 231; the angle between the bottom surface of the angled column 23 and the inclined surface 231 is 45°-75°. The angle between the bottom surface of the angled column 23 and the inclined surface 231 is denoted as α, and can specifically be 45°, 50°, 60°, 70°, or 75°. By designing the angle range of α to limit the angled column 23, this structure can effectively distribute the load it bears. Compared with straight or vertical columns, the unique inclination angle of the angled column 23 can change the direction of force transmission, making the force more evenly distributed within the structural system along the inclination direction. The angled column 23 can share some of the pressure of straight or vertical columns, enhancing the overall structural stability, reducing the occurrence of local stress concentration, and thus improving the overall structure's ability to resist lateral forces (such as wind loads and seismic forces).

[0038] Specifically, the inclined surface 231 is the front side of the inclined column 23; by designing the direction of the inclined surface 231, the stress direction of the inclined column 23 can be set, making the structure more stable and reliable during the milling process.

[0039] To facilitate the installation of the gantry frame 2, the gantry frame 2 also includes a gantry base plate 25 connected to the bottom surface of the inclined column 23. By designing the gantry base plate 25, the gantry frame 2 can be easily and stably installed on the workbench 1.

[0040] To enhance the structural stability of the gantry 2, make the connection more stable and reliable, and improve the load-bearing capacity, the support column 21, the corresponding angled column 23, and the angled support 24 are integrally formed.

[0041] In this embodiment, the horizontal and vertical moving device 3 includes a horizontal moving device 31 and a vertical moving device 32; the horizontal moving device 31 includes a horizontal drive motor 311 and the lead screw sliding assembly 312; the lead screw sliding assembly 312 includes a lead screw 3121, a slide block 3122, and a horizontal guide rail 3123; the lead screw 3121 is rotatably mounted in the lead screw mounting groove 221; the horizontal drive motor 311 is disposed in the lead screw mounting groove 221; the conveying shaft of the horizontal drive motor 311 is connected to the lead screw 3121; the slide block 3122 is slidably connected to the lead screw 3121 and reciprocates along the length direction of the lead screw 3121 by the drive of the horizontal drive motor 311; the slide block 3122 is also slidably connected to the horizontal guide rail 3123 disposed on the gantry frame 2; the vertical moving device 32 is connected to the slide block 3122; the milling device 4 is connected to the vertical moving device 32. The transverse drive motor 311 drives the slide 3122 to reciprocate along the length of the lead screw 3121. The transverse guide rail 3123 further enhances the stability of the slide 3122's movement, facilitating the adjustment of the positions of the vertical moving device 32 and the milling device 4 on the worktable 1. This allows the milling device 4 to easily mill hardware parts made of materials such as iron, copper, aluminum alloy, and zinc alloy. Similarly, the vertical moving device 32, which is the existing lead screw 3121 device, enables the milling device 4 to move vertically relative to the worktable 1, facilitating the milling device 4's processing of hardware parts.

[0042] To improve the production efficiency of this multi-axis CNC double-head milling machine, two milling devices 4 are provided; the two milling devices 4 are arranged side by side and connected to the horizontal and vertical moving device 3 through a connecting plate frame 5. By providing two milling devices 4, two milling devices 4 can simultaneously process two hardware parts or other products, thereby improving production efficiency.

[0043] In this embodiment, the milling device 4 includes a milling motor 41 connected to the integrated plate frame 5 and a spindle milling assembly 42 connected to the milling motor 41. The milling motor 41 and the spindle milling assembly 42 form the milling device 4. The milling motor 41 drives the spindle milling assembly 42 to rotate, thereby driving the cutting tool mounted on the spindle milling assembly 42 to rotate synchronously, quickly completing the processing of hardware parts and other products.

[0044] In this embodiment, the multi-axial CNC double-head milling machine further includes a longitudinal moving device and a workpiece placement table. The longitudinal moving device is installed on the worktable 1 and located between the two support columns 21. The workpiece placement table is connected to the longitudinal moving device and moves back and forth relative to the worktable 1 via the drive of the longitudinal moving device. The workpiece placement table has several inverted T-shaped grooves arranged at intervals. The design of the inverted T-shaped grooves facilitates the clamping and positioning of the workpiece, which is more flexible and convenient than the traditional screw-locking method. By using the longitudinal moving device to drive the workpiece placement table to move back and forth relative to the worktable 1, combined with the horizontal and vertical moving device 3, the multi-axial CNC double-head milling machine has the function of multi-axial movement, adjusting the position of the milling device 4 and the workpiece placement table, facilitating the milling device 4 to process the workpiece. The longitudinal moving device is the existing lead screw 3121 moving device, which will not be described in detail.

[0045] Of course, this CNC biaxial milling machine also includes an existing intelligent CNC system: an integrated touch screen operating interface and PLC control unit. Users can input parameters such as workpiece size and material, as well as processing requirements, through the interface. The system automatically adjusts milling parameters, including feed rate, spindle speed, and depth of cut. The system automatically calculates and generates the optimal processing plan, achieving intelligent processing and reducing human error. Simultaneously, the system has real-time monitoring and fault alarm functions to ensure the safety and stability of the processing. It also provides electrical control for the horizontal and vertical moving devices 3, the milling device 4, and the longitudinal moving device.

[0046] In summary, this utility model embodiment provides a multi-axis CNC double-head milling machine, which has the following advantages:

[0047] I. Based on the worktable 1, gantry 2, horizontal and vertical moving device 3, and milling device 4, the gantry 2 is improved by setting up a support column 21, a crossbeam 22, and an angled column 23 to form the gantry 2. First, the angled column 23 is connected to the lower end of the support column 21 to form a triangular stable structure, which effectively improves the overall rigidity of the gantry 2. This design not only enhances the anti-tilting ability of the equipment, but also significantly improves the stability under heavy load or high-speed processing conditions. Second, with the introduction of the angled column 23, the load-bearing capacity of the gantry 2 is significantly improved. Even when processing large or heavy workpieces, it can ensure the stable operation of the equipment and avoid the decrease in processing accuracy or equipment damage caused by insufficient load-bearing capacity. Compared with the traditional straight rod gantry 2, it is more robust and greatly improves the stability of the equipment. Furthermore, the angled column 23, as a stabilizing structure, provides more solid support for the horizontal and vertical moving device 3 and reduces processing errors caused by structural deformation. This makes the multi-axis CNC double-head milling machine more reliable when processing high-precision parts.

[0048] Second, a screw mounting groove 221 is designed on the crossbeam 22 for installing the transverse screw sliding assembly 312, which facilitates the stable installation of the transverse screw sliding assembly 312, enhances the stability of the horizontal and vertical moving device 3 on the gantry 2, and reduces the machining error of the milling device 4 caused by the unstable movement of the horizontal and vertical moving device 3.

[0049] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A multi-axis CNC double-head milling machine, comprising a worktable, a gantry frame, a horizontal and vertical moving device, and a milling device; the gantry frame is mounted on the worktable; the horizontal and vertical moving device is mounted on the gantry frame; the milling device is connected to the horizontal and vertical moving device and can move relative to the worktable in the up-down and left-right directions via the horizontal and vertical moving device; characterized in that, The horizontal and vertical moving device includes a horizontal lead screw sliding assembly; The gantry frame includes: Supports, two of which are connected at intervals to the workbench; A crossbeam, with its two ends connected to the upper ends of the two aforementioned supports respectively; the crossbeam has a screw mounting groove for mounting the transverse screw sliding assembly; An angled column, which is connected to the lower end of the support column.

2. The multi-axial CNC double-head milling machine according to claim 1, characterized in that, The two support columns are spaced apart on the left and right sides of the workbench; the upper right side of the left support column and the upper left side of the right support column are both provided with angled supports that connect to the bottom surface of the crossbeam.

3. The multi-axial CNC double-head milling machine according to claim 1 or 2, characterized in that, The oblique column has an inclined surface that is inclined downwards; the angle between the bottom surface of the oblique column and the inclined surface is 45°-75°.

4. The multi-axial CNC double-head milling machine according to claim 3, characterized in that, The inclined surface is the front side surface of the angled column; The gantry also includes a gantry base plate connected to the bottom surface of the angled column.

5. The multi-axial CNC double-head milling machine according to claim 2, characterized in that, The support column, the corresponding angled column, and the angled support are integrally formed.

6. The multi-axial CNC double-head milling machine according to claim 1, characterized in that, The gantry frame is made of steel.

7. The multi-axial CNC double-head milling machine according to claim 1, characterized in that, The horizontal and vertical moving device includes a horizontal moving device and a vertical moving device; the horizontal moving device includes a horizontal drive motor and the lead screw sliding assembly; the lead screw sliding assembly includes a lead screw, a slide block, and a horizontal guide rail; the lead screw is rotatably installed in the lead screw mounting groove; The transverse drive motor is located in the lead screw mounting slot; the conveying shaft of the transverse drive motor is connected to the lead screw; the slide block is slidably connected to the lead screw and reciprocates along the length direction of the lead screw under the drive of the transverse drive motor; the slide block is also slidably connected to the transverse guide rail connected to the gantry frame. The vertical moving device is connected to the slide; the milling device is connected to the vertical moving device.

8. The multi-axial CNC double-head milling machine according to claim 1, characterized in that, The milling device has two parts; the two milling devices are arranged side by side and connected to the horizontal and vertical moving device through a connected plate frame.

9. The multi-axial CNC double-head milling machine according to claim 8, characterized in that, The milling device includes a milling motor connected to the integrated plate frame and a spindle milling assembly connected to the milling motor.

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