Square slide numerical control planer milling machine

Abstract

The utility model provides a square slide rest numerical control planer -milling -turning miller belongs to planer -milling -turning miller technical field, including portal frame, bed, milling assembly, grinding assembly and transmission mechanism, the milling assembly includes the milling head, the milling machine saddle and the milling head slide rest of setting on the portal frame, the milling head slide rest is the full constraint guiding slide rest of central symmetry, be equipped with workstation on the bed, transmission mechanism includes the bevel gear of setting on the bed and the inclined rack on the workstation. By the slide rest of giving in milling, replace the square slide rail of higher coincidence degree of cross section geometric center, barycenter and stiffness center from the conventional rectangular slide rest and drive, use the full constraint guiding slide rest of central symmetry to provide higher rigidity for the feed of milling head, square slide rail is small, more flexible, improve processing efficiency, the higher workstation bears, the speed can be fast or slow arbitrary adjustment, can satisfy milling and grinding various requirements. The transmission of workpiece provides higher precision and driving force by bevel gear and inclined rack.

Description

Technical Field

[0001] This utility model belongs to the technical field of gantry milling machines, specifically referring to a square slide CNC gantry milling machine. Background Technology

[0002] A gantry milling machine is a large, heavy-duty CNC machine tool that integrates multiple machining functions. Characterized by a gantry frame structure, it is mainly used for roughing and finishing large workpieces, including flat surfaces, inclined surfaces, and grooves. Essentially, it is a multi-functional composite machining equipment developed from the traditional gantry planer, capable of simultaneously or separately performing milling, grinding, and planing processes.

[0003] In existing CNC gantry milling machines, the milling head uses a rectangular ram, which employs an asymmetrical primary and secondary guiding system. This non-fully enclosed constraint results in poor rigidity, slow speed, and excessive size. Furthermore, the existing gantry milling X-axis worktable uses a hardened rail structure, with spur racks and gears, affecting the positioning accuracy of workpiece transport. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a square slide ram CNC gantry milling machine to at least partially solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model is as follows: A square ram CNC gantry milling and grinding machine is proposed, including a gantry frame and a bed, and a worktable. The gantry frame includes two columns and a crossbeam on the columns. The square ram CNC gantry milling and grinding machine includes: a milling assembly, including a milling machine saddle set on the crossbeam of the gantry frame, with a milling head set on the side of the milling machine saddle away from the gantry frame, and the milling head being raised and lowered and fed by a milling head slide on the milling machine saddle; a grinding assembly, including two grinding machine saddles set on the crossbeam of the gantry frame, with a grinding head slide on the side of each of the two grinding machine saddles away from the gantry frame, and a first grinding head and a second grinding head respectively set on the two grinding head slides; wherein, the milling head slide is a centrally symmetrical fully constrained guide slide, and a worktable is set on the bed, and the worktable moves along the linear guide on the bed by means of a transmission mechanism.

[0006] Furthermore, the milling head ram includes a square ram with a square cross-section.

[0007] Furthermore, the bed is located between the two columns of the gantry frame and directly below the crossbeam.

[0008] Furthermore, the milling assembly and grinding assembly are configured to slide along the track of the gantry beam via milling machine slides and grinding machine slides, and both grinding heads are raised and lowered on the side of the grinding machine slide away from the gantry via grinding head rams.

[0009] Furthermore, the transmission mechanism includes a helical rack mounted on the bed, and multiple helical gears are rotatably connected to the bottom of the worktable, all of which mesh with the helical rack.

[0010] Furthermore, the rotation axes of the first grinding head and the second grinding head are perpendicular to each other.

[0011] Beneficial effects: By replacing the conventional rectangular ram that controls the milling head's lifting and lowering with a square slide rail that has a higher degree of coincidence in cross-sectional geometry, center of gravity, and center of stiffness, and using a centrally symmetrical, fully constrained guide ram, the feed of the milling head is provided with higher rigidity, improving the vibration resistance during milling. Gantry milling machines offer good rigidity, small size, and greater flexibility, improving processing efficiency. The worktable has a higher load capacity, and the speed can be adjusted arbitrarily to meet various milling requirements. Workpiece transport utilizes a helical gear and helical rack meshing method, providing higher conveying accuracy and allowing the use of a higher torque motor to provide stable driving force for heavier workpieces. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the square slide ram CNC gantry milling machine proposed in this utility model. Figure 1 ; Figure 2 This is a three-dimensional structural diagram of the square slide ram CNC gantry milling machine proposed in this utility model. Figure 1 ; Figure 3 This utility model Figure 2 Enlarged diagram of point A in the diagram; Figure 4 This is a partial structural plan view of the square slide ram CNC gantry milling machine proposed in this utility model.

[0013] Among them, 1. Gantry frame; 2. Bed; 3. Milling assembly; 301. Milling machine slide; 302. Milling head; 4. Grinding assembly; 401. Grinding machine slide; 402. Grinding head slide; 403. First grinding head; 404. Second grinding head; 5. Milling head slide; 501. Square slide; 6. Worktable; 7. Transmission mechanism; 701. Helical rack; 702. Helical gear.

[0014] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0015] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0016] As mentioned earlier, in existing CNC gantry milling machines, the milling head uses a rectangular ram. This rectangular ram employs an asymmetrical primary and secondary guiding system, which is a non-fully enclosed constraint, resulting in poor rigidity, slow speed, and excessive size. Furthermore, the existing gantry milling X-axis worktable uses a hardened rail structure, and the rack and gears are spur racks and spur gears, affecting the positioning accuracy of workpiece transport.

[0017] To address this issue, this utility model provides a square ram CNC gantry milling machine. The ram used for milling, controlled by raising and lowering the milling head 302, is replaced with a square ram 501 (e.g., square cross-section, with a higher degree of overlap between its geometric center, center of gravity, and center of rigidity) for transmission. This provides higher rigidity for the milling head's feed and improves the vibration resistance of the milling head 302 during milling. This results in a CNC gantry milling machine with advantages such as high positioning accuracy, high speed, good rigidity, multi-functionality, and reduced processing steps compared to using multiple machines.

[0018] This makes the gantry milling machine more rigid, smaller in size, more flexible, and improves processing efficiency. The worktable has a higher load capacity, and the speed can be adjusted arbitrarily to meet various milling requirements.

[0019] The positioning method employs a hook-over-dead-point positioning, utilizing the differential reset of the unlocking disc and the pull-line disc. The CNC gantry milling machine uses a square slide ram, and the X-axis worktable is a linear guide. The 701 helical rack and pinion dual-motor or multi-motor transmission technology can solve the load-bearing drive problem of 10~150 tons.

[0020] like Figures 1-4 As shown in the present invention, a gantry milling machine is provided, particularly a square slide ram CNC gantry milling machine, which includes a gantry frame 1, a bed 2, a milling assembly 3, and a grinding assembly 4.

[0021] The gantry frame 1 includes two vertical columns, and the two columns are as follows: Figure 1 and Figure 2 As shown, a crossbeam is connected at the top, along with... Figure 1 and Figure 2 In the text, you can define custom X, Y, and Z axes to describe directions within space, such as... Figure 1As shown, a guide rail extending along the Y direction is installed on the positive X-axis side of the gantry beam 1. A milling assembly 3 and a grinding assembly 4 are integrated on the positive X-axis side of the gantry beam 1. The milling assembly 3 includes a milling machine saddle 301 mounted on the positive X-axis side of the gantry beam 1. A milling head slide 5 is mounted on the positive X-axis side of the milling machine saddle 301. A milling head 302 is mounted at the bottom end of the milling head slide 5. The milling head 302 moves along the Z-axis via the milling head slide 5 to feed the workpiece along the Z-axis for milling operations.

[0022] To enable the milling head 302 to perform milling operations at higher speeds, the milling head ram 5 is a centrally symmetrical, fully constrained guide ram. The cross-sectional shape of the milling head ram 5 has a high degree of coincidence between its center of mass, center of rigidity, and center of stiffness, including a square shape. Therefore, a square ram 501 is used as an example of the milling head ram 5. The square ram 501 is constrained by guide rails on all four sides along the X and Y axes. Unlike the rectangular ram of a transmission gantry milling machine, the square ram 501 achieves omnidirectional constraint with a four-sided closed loop, which can provide higher rigidity for the feed of the milling head 302 along the Z axis, increase the bending and torsional resistance of the milling assembly 3 as a whole, and enable the milling head 302 to achieve smooth milling operations at higher speeds. The omnidirectional closed-loop guide constraint also provides higher movement accuracy for the feed machining of the milling head 302.

[0023] like Figure 1 and Figure 2 As shown, the machine bed 2 is positioned between the two columns of the gantry frame 1, and is located in the negative direction of the Z-axis along the top crossbeam of the gantry frame 1. The gantry frame 1 completely spans the width of the machine bed 2. The machine bed 2 is mounted on the ground, and a worktable 6 is installed on the machine bed 2. The worktable 6 moves along the X-axis on the machine bed 2, cooperating with the milling machine saddle 301 sliding along the Y-axis on the track of the crossbeam of the gantry frame 1, and the milling head 302 moving along the Z-axis for feed. Through the CNC system, the workpiece can be milled in all directions on the worktable 6.

[0024] On the crossbeam of the gantry 1, on one side in the positive X-axis direction, the grinding assembly 4 includes at least two grinding saddles 401 mounted on the gantry 1, such as... Figure 1 and Figure 4 As shown, taking two grinding machine slides 401 as an example, grinding head slides 402 are installed on one side of the positive X-axis of both grinding machine slides 401. Grinding heads are installed at the bottom of the grinding head slides 402 along the positive X-axis. To increase the grinding efficiency of the two grinding heads, the two grinding heads are divided into a first grinding head 403 and a second grinding head 404, as shown. Figure 4As shown, the first grinding head 403 is a vertical grinding head, and the second grinding head 404 is a horizontal grinding head. The grinding wheel shafts of the two grinding heads are perpendicular to each other, which can perform transverse grinding and longitudinal grinding on the workpiece on the worktable 6. When integrated with the milling assembly 3 on a gantry 1, the milling and grinding work can be carried out simultaneously, increasing the efficiency of milling and grinding workpieces.

[0025] In order to allow the worktable 6 to slide on the bed 2, such as Figure 2 and Figure 3 As shown, a transmission mechanism 7 is provided between the worktable 6 on the negative Z-axis side and the bed 2. The transmission mechanism 7 includes multiple helical gears 702 installed on the worktable 6 on the negative Z-axis side and a helical rack 701 installed on the bed 2 on the positive Z-axis side. Unlike the spur rack and spur gear of existing gantry milling machines, the helical gears 702 and the helical rack 701 mesh with each other. Using a CNC system, the worktable 6 can move on the bed 2 with higher precision, and a motor with a larger output torque can be used to drive the helical gears 702, enabling the worktable 6 to carry and drive workpieces with greater weight.

[0026] In summary, this utility model replaces the conventional rectangular ram with a square ram 501 (e.g., square cross-section, with a higher degree of coincidence between the geometric center, center of gravity, and center of rigidity) for controlling the raising and lowering of the milling head 302 during milling. This provides higher rigidity for the milling head feed and improves the vibration resistance of the milling head 302 during milling. This results in a CNC gantry milling machine with advantages such as accurate positioning, high speed, good rigidity, multi-functionality, and reduced processing steps compared to multiple machines. The gantry milling machine features good rigidity, small size, greater flexibility, improved processing efficiency, higher table load capacity, and adjustable speed to meet various milling requirements. The positioning method uses a hook-based over-dead-point positioning and differential reset via an unlocking disc and a pull-line disc. The CNC gantry milling machine uses a square ram, a linear guide for the X-axis table, and a dual-motor or multi-motor drive technology with a helical rack 701, which can solve the problem of driving loads ranging from 10 to 150 tons.

[0027] CNC gantry milling machines require slow feed speeds of 0.3 to 8 meters per minute and a positioning accuracy of 0.03 m / min. Gantry grinding machines, on the other hand, require processing speeds of 15 to 25 meters per minute but do not require precise positioning.

[0028] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit, such design should fall within the scope of protection.

Claims

1. A square sliding ram CNC gantry milling machine, comprising a gantry frame (1) and a bed (2), wherein the gantry frame (1) comprises two columns and a crossbeam on the columns, characterized in that, The square sliding ram CNC gantry milling machine includes: The milling assembly (3) includes a milling machine saddle (301) mounted on the crossbeam of the gantry (1). A milling head (302) is mounted on the side of the milling machine saddle (301) away from the gantry (1). The milling head (302) is fed up and down by a milling head slide (5) mounted on the milling machine saddle (301). The grinding assembly (4) includes two grinding machine saddles (401) mounted on the crossbeam of the gantry (1). Each of the two grinding machine saddles (401) is provided with a grinding head slide (402) on the side away from the gantry (1). A first grinding head (403) and a second grinding head (404) are respectively mounted on the two grinding head slides (402). The milling head slide (5) is a centrally symmetrical fully constrained guide slide, and a worktable (6) is provided on the bed (2). The worktable (6) moves along the upper rail of the bed (2) through a transmission mechanism (7).

2. The square slide ram CNC gantry milling machine according to claim 1, characterized in that, The milling head slide (5) includes a square slide (501) with a square cross-section.

3. The square slide ram CNC gantry milling machine according to claim 1, characterized in that, The bed (2) is located between the two columns of the gantry frame (1) and directly below the crossbeam.

4. The square slide ram CNC gantry milling machine according to claim 1, characterized in that, The milling assembly (3) and grinding assembly (4) are configured to slide along the track of the gantry (1) beam via milling machine saddle (301) and grinding machine saddle (401), and both grinding heads are raised and lowered on the side of grinding machine saddle (401) away from the gantry (1) via grinding head ram (402).

5. The square slide ram CNC gantry milling machine according to claim 1, characterized in that, The transmission mechanism (7) includes a helical rack (701) mounted on the bed (2), and a plurality of helical gears (702) are rotatably connected to the bottom of the worktable (6), and all the helical gears (702) mesh with the helical rack (701).

6. The square slide ram CNC gantry milling machine according to claim 4, characterized in that, The rotation axes of the first grinding head (403) and the second grinding head (404) are perpendicular to each other.

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