Ram for machine tool gantry milling machine

Abstract

The utility model provides a ram for planer milling of a machine tool, which solves the problems that the ram of the existing milling machine is single in structure, mostly adopts a single lead screw transmission structure, and large workpieces are easy to shake during milling operation, and the like, and adopts the main scheme that the ram comprises a positioning table, a ram main body and a milling table, one end of the milling table is fixedly connected with the positioning table, the other end of the milling table is fixedly connected with the ram body, a first transmission assembly is arranged in the ram body and used for driving the milling table to move upwards and downwards at the height of the positioning table in a servo mode, and a second transmission assembly is further embedded in the side, close to the ram body, of the positioning table and used for driving the milling table to move upwards and downwards. The second transmission assembly is used for hydraulically jacking the milling table to move upwards and downwards at the height of the positioning table, and the transmission direction of the first transmission assembly and the transmission direction of the second transmission assembly are kept consistent and correspond in a servo mode.

Description

Technical Field

[0001] This utility model relates to milling machines, and more particularly to a slide for a gantry milling machine. Background Technology

[0002] A milling machine is a machine tool that uses a milling cutter to machine various surfaces of a workpiece. Typically, the rotation of the milling cutter is the primary motion, while the movement of the workpiece and the milling cutter constitutes the feed motion. It can machine planes, grooves, various curved surfaces, gears, and more. The ram-type structure is the main structural type for high-speed milling and boring. The ram has a large cross-section, high rigidity, good stability during high-speed operation, and is easy to mount with various milling head attachments to achieve high-speed machining.

[0003] For existing gantry milling machines, the corresponding ram has a single driving structure in the height direction, such as a lead screw structure or a sliding module structure. However, when dealing with the milling of large workpieces, the center of gravity of the machine is unstable and the milling table slips to varying degrees during the working process. To address this issue, we propose a ram for gantry milling machines. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a slide for a gantry milling machine tool, which solves the instability problem caused by the existing milling table relying on a single structure drive.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a ram for a gantry milling machine tool, comprising: a positioning table, a ram body, and a milling table. One end of the positioning table is recessed to connect to an external lathe body, and the other end is connected and fixed to the ram body. The ram body has a built-in first transmission component, which is used to servo drive the milling table to move up and down at the height of the positioning table. The positioning table also has a second transmission component embedded on the side near the ram body, which is used to hydraulically lift the milling table to move up and down at the height of the positioning table. The first transmission component and the second transmission component have the same transmission direction and are servo-corresponding.

[0006] Furthermore, the first transmission assembly includes a drive motor, a moving platform, a lead screw, a coupling, a support platform, an upper bearing, a lower bearing, and a nut seat. The drive motor is connected and fixed to the bottom surface of the positioning platform via a positioning plate, and its output end is coaxially fixed to the lead screw via the coupling. The upper and lower ends of the positioning platform are bolted to the support platform at the two ends of the corresponding lead screw. The two ends of the lead screw are rotatably connected to the support platform via the upper bearing and the lower bearing, respectively. The nut seat is threadedly engaged with the lead screw, and the moving platform is sleeved and fixed on the nut seat.

[0007] Furthermore, both the upper bearing and the lower bearing are structures consisting of multiple continuously stacked bearing groups.

[0008] Furthermore, the second transmission assembly includes two sets symmetrically arranged on both sides of the positioning platform. Each second transmission assembly includes a hydraulic cylinder, a hydraulic rod, and a connecting block. The top of the positioning platform has an inner groove extending along its height to embed and fix the hydraulic cylinder. The hydraulic rod is servo-output through the hydraulic cylinder and connected and fixed to the slide block at its end.

[0009] Furthermore, the positioning table has a segmented recess on the side connected to the external lathe body, forming multiple continuous trapezoidal structures of different depths, with positioning holes provided at the bottom of the recess for bolt positioning.

[0010] Furthermore, the milling table includes a movable housing and an electric spindle. The electric spindle is bolted to the top of the movable housing. The movable housing has a recessed platform protruding outward on its side near the first transmission component. The movable table has a boss protruding outward on its side that fits against the movable housing. The recessed platform has a central opening and engages with the boss through a wedge block within the opening. A pad is also provided at the interval between the movable table and the movable housing.

[0011] Furthermore, the movable housing has multiple windows equidistantly spaced on its side away from the first transmission component.

[0012] Furthermore, the movable housing has outer edges formed at both ends on the side near the positioning platform, and the positioning platform has pressure plates bolted to the corresponding outer edges to slide in contact with the outer edges.

[0013] Compared with the prior art, the beneficial effects of this utility model include: the drive motor drives the lead screw to rotate and position within two support platforms, and the synchronous moving platform moves up and down under the action of the nut seat. Furthermore, due to the locking action of the wedge block and the boss, the moving platform can synchronously drive the moving housing to move, realizing the subsequent movement of the electric spindle and coordinating with the milling table operation. To avoid the instability of a single drive structure, this utility model also sets a second transmission component corresponding to the positioning platform. Through the output of the hydraulic cylinder and hydraulic rod, the moving housing can be synchronously pushed to move. The two transmission components are servo-corresponding, ensuring the stability and stability of the equipment during the milling process of large workpieces. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0015] Figure 1The schematic diagram shows an isometric view of a slide block structure according to one embodiment of the present invention;

[0016] Figure 2 The schematic diagram shows a front view of a slide block according to one embodiment of the present invention;

[0017] Figure 3 The diagram schematically shows a right view of a slide block according to one embodiment of the present invention;

[0018] Figure 4 The schematic diagram shows a cross-sectional view of the internal structure of the slide block according to one embodiment of the present invention.

[0019] The following are the labeling elements in the diagram: 1. Positioning table; 2. Slide body; 3. Milling table; 4. First transmission assembly; 5. Second transmission assembly; 6. Drive motor; 7. Moving table; 8. Lead screw; 9. Coupling; 10. Support table; 11. Upper bearing; 12. Lower bearing; 13. Nut seat; 14. Outer edge; 15. Pressure plate; 16. Hydraulic cylinder; 17. Hydraulic rod; 18. Connecting block; 19. Inner groove; 20. Trapezoidal structure; 21. Positioning hole; 22. Moving housing; 23. Electric spindle; 24. Insert; 25. Boss; 26. Wedge block; 27. Pad; 28. Window. Detailed Implementation

[0020] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0021] According to one embodiment of the present invention, in conjunction with Figures 1-4 As shown.

[0022] like Figure 1 As shown, in this embodiment, a ram for a gantry milling machine tool includes: a positioning table 1, a ram body 2, and a milling table 3. One end of the positioning table 1 is recessed to connect to an external lathe body, and the other end is fixedly connected to the ram body 2. The ram body 2 has a built-in first transmission component 4, which is used to servo drive the milling table 3 to move up and down at the height of the positioning table 1. The positioning table 1 also has a second transmission component 5 embedded on the side near the ram body 2, which is used to hydraulically lift the milling table 3 to move up and down at the height of the positioning table 1. The first transmission component 4 and the second transmission component 5 have the same transmission direction and are servo-corresponding.

[0023] like Figures 2-4 As shown, for the two-transmission structure, in this embodiment, the first transmission component 4 includes a drive motor 6, a moving platform 7, a lead screw 8, a coupling 9, a support platform 10, an upper bearing 11, a lower bearing 12, and a nut seat 13. The drive motor 6 is connected and fixed to the bottom surface of the positioning platform 1 via a positioning plate, and its output end is coaxially fixed to the lead screw 8 via the coupling 9. The upper and lower ends of the positioning platform 1 are bolted to the support platform 10 at the two ends corresponding to the lead screw 8, respectively. The two ends of the lead screw are rotatably connected to the support platform 10 via the upper bearing 11 and the lower bearing 12, respectively. The nut seat 13 is threadedly engaged with the lead screw 8, and the moving platform 7 is sleeved and fixed on the nut seat 13. The upper bearing 11 and the lower bearing 12 are both structures of multiple continuously stacked bearing groups.

[0024] The second transmission assembly 5 includes two sets symmetrically arranged on both sides of the positioning platform 1. Each second transmission assembly 5 includes a hydraulic cylinder 16, a hydraulic rod 17, and a connecting block 18. The top of the positioning platform 1 has an inner groove 19 extending along its height to embed and fix the hydraulic cylinder 16. The hydraulic rod 17 is servo-output through the hydraulic cylinder 16 and is connected and fixed to the slide block 2 at its end through the connecting block 18.

[0025] Furthermore, the milling table 3 includes a movable housing 22 and an electric spindle 23. The electric spindle 23 is bolted to the top of the movable housing 22. The movable housing 22 has a protruding insert 24 on its side near the first transmission component 4. The movable table 7 has a protruding boss 25 on its side that fits against the movable housing 22. The insert 24 has a central opening and engages with the boss 25 within the opening via a wedge block 26. A pad 27 is also provided at the interval between the movable table 7 and the movable housing 22.

[0026] With the above structure, after the drive motor 6 outputs, it can drive the lead screw 8 to rotate and position within the two support platforms 10. The synchronous moving platform 7 moves up and down under the action of the nut seat 13. Due to the locking action of the wedge block 26 and the boss 25, the moving platform 7 can synchronously drive the moving housing 22 to move, realizing the subsequent movement of the electric spindle 23, and cooperating with the milling table 3. In order to avoid the instability of a single drive structure, this utility model also sets a second transmission component 5 corresponding to the positioning platform 1. Through the output of the hydraulic cylinder 16 and the hydraulic rod 17, it can synchronously push the moving housing 22 to move. The two transmission components are servo-corresponding to ensure the stability of the equipment and prevent shaking during the milling process of large workpieces.

[0027] Furthermore, the positioning platform 1 has a segmented recess on the side connected to the external lathe body, forming multiple continuous trapezoidal structures 20 of different depths. The bottom surface of the recess has a positioning hole 21 for bolt positioning. The movable housing 22 has multiple windows 28 equidistantly spaced on its side away from the first transmission assembly 4. The movable housing 22 has outer edges 14 at both ends on the side near the positioning platform 1, and the positioning platform 1 has pressure plates 15 bolted to the corresponding outer edges 14 for sliding contact.

[0028] The positioning table 1 also differs from the conventional face-to-face bolt fixing. Instead, it uses a concave trapezoidal structure 20 in conjunction with an external lathe for positioning, which further ensures that the center of gravity of the equipment tends to be in the center position of the equipment. The outer edge 14 in conjunction with the pressure plate 15 can also ensure stable sliding contact during the up and down movement of the moving box 22.

[0029] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A slide block for a gantry milling machine, characterized in that, include: The system includes a positioning table, a slide body, and a milling table. One end of the positioning table is recessed to connect to an external lathe body, and the other end is fixedly connected to the slide body. The slide body has a built-in first transmission component, which is used to servo drive the milling table to move up and down at the height of the positioning table. The positioning table also has a second transmission component embedded on the side near the slide body, which is used to hydraulically lift the milling table to move up and down at the height of the positioning table. The first transmission component and the second transmission component have the same transmission direction and are servo-corresponding.

2. The slide block for a gantry milling machine tool according to claim 1, characterized in that: The first transmission assembly includes a drive motor, a moving platform, a lead screw, a coupling, a support platform, an upper bearing, a lower bearing, and a nut seat. The drive motor is connected and fixed to the bottom surface of the positioning platform via a positioning plate, and its output end is coaxially fixed to the lead screw via the coupling. The upper and lower ends of the positioning platform are bolted to the support platform at the two ends of the corresponding lead screw. The two ends of the lead screw are rotatably connected to the support platform via the upper bearing and the lower bearing, respectively. The nut seat is threadedly engaged with the lead screw, and the moving platform is sleeved and fixed on the nut seat.

3. A slide block for a gantry milling machine tool according to claim 2, characterized in that: Both the upper bearing and the lower bearing are structures consisting of multiple continuously stacked bearing groups.

4. A slide for a gantry milling machine tool according to claim 1, characterized in that: The second transmission assembly includes two sets symmetrically arranged on both sides of the positioning platform. Each second transmission assembly includes a hydraulic cylinder, a hydraulic rod, and a connecting block. The top of the positioning platform has an inner groove extending along its height to embed and fix the hydraulic cylinder. The hydraulic rod is servo-output through the hydraulic cylinder and is connected and fixed to the slide block at its end.

5. A slide block for a gantry milling machine tool according to claim 1, characterized in that: The positioning table has a segmented recess on the side connected to the external lathe body, forming multiple continuous trapezoidal structures of different depths. The bottom surface of the recess has a positioning hole for bolt positioning.

6. A ram for a gantry milling machine tool according to any one of claims 2-3, characterized in that: The milling table includes a movable housing and an electric spindle. The electric spindle is bolted to the top of the movable housing. The movable housing has a recessed platform protruding outward on its side near the first transmission component. The movable table has a boss protruding outward on its side that fits against the movable housing. The recessed platform has a central opening and engages with the boss through a wedge block within the opening. A pad is also provided at the interval between the movable table and the movable housing.

7. A slide for a gantry milling machine tool according to claim 6, characterized in that: The movable housing has multiple windows equidistantly spaced on its side away from the first transmission component.

8. A slide block for a gantry milling machine tool according to claim 6, characterized in that: The movable housing has outer edges at both ends on the side near the positioning platform, and the positioning platform has pressure plates bolted to the corresponding outer edges to slide in contact with the outer edges.

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