A worktable driving structure for a CNC machine tool

Abstract

The utility model relates to the technical field of numerical control machine tools, and discloses a worktable driving structure of a numerical control machine tool, including a linear motor arranged on a machine tool bed, and a worktable slidably arranged on the machine tool bed, the mover of the linear motor is fixedly connected to the bottom of the worktable through a connecting plate, the interior of the worktable is a hollow structure, and a first wiring opening and a second wiring opening are respectively provided on the rear end face and the bottom face of the worktable, the wires and coolant pipes connected to the linear motor will first pass through the second wiring opening to enter the interior of the worktable, and then extend out of the worktable through the first wiring opening and be arranged in a drag chain, which not only solves the problem that the wires and coolant pipes are exposed and prone to contamination and damage, but also avoids the problem that the wires and coolant pipes are entangled, resulting in disconnection or interference with the normal movement of the worktable. When the worktable moves, the drag chain and the wires and coolant pipes in the drag chain bend and change with the movement of the worktable, and the wiring is reasonable.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a working table driving structure of a numerical control machine tool. Background Art

[0002] Linear motors can achieve direct transmission, and have the advantages of light and thin structure, high transmission efficiency, safety and reliability, and long life. They are gradually widely used in the design of CNC machine tools. In addition, linear motors can easily support their movers with magnetic suspension, so that a certain air gap is always maintained between the mover and the stator without contact, which eliminates the contact friction resistance between the stator and the mover, thereby greatly improving the sensitivity, speed and follow-up performance of the system. When the workbench is driven to move by a linear motor, the mover of the linear motor will be connected to the workbench drive. The mover of the linear motor needs to be connected to wires and coolant pipes. The wires and coolant pipes will change position as the mover moves, so it is urgent to solve the routing problem of the wires and coolant pipes.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a worktable drive structure for a CNC machine tool, aiming to solve the routing problem of wires connected to the mover of a linear motor and coolant pipes.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A worktable driving structure for a CNC machine tool comprises a linear motor arranged on a machine tool bed, and a worktable slidably arranged on the machine tool bed, wherein a mover of the linear motor is fixedly connected to the bottom of the worktable via a connecting plate, the interior of the worktable is a hollow structure, a first wiring opening is provided on the rear end surface of the worktable, a second wiring opening is provided on the bottom surface of the worktable, and a drag chain is connected to the first wiring opening of the worktable.

[0007] As a further improvement of the above technical solution, a guide rail extending along the X-axis is provided on the machine tool bed, and a sliding block for sliding connection with the guide rail is fixed to the bottom of the workbench.

[0008] As a further improvement of the above technical solution, a guide rail brake is fixedly connected to the bottom of the workbench.

[0009] As a further improvement of the above technical solution, a plurality of through holes for the lubrication pipeline to pass through are opened at the bottom of the workbench, and a support plate and a distributor arranged on the support plate are arranged inside the workbench, and the distributor is connected to the lubrication pipeline.

[0010] As a further improvement of the above technical solution, the workbench is of a square structure and is provided with a clamping plate on the top surface, and a plurality of L-shaped grooves arranged in parallel and extending along the Y-axis are formed in the clamping plate.

[0011] As a further improvement of the above technical solution, limit structures are respectively arranged at both ends of the stator of the linear motor.

[0012] As a further improvement of the above technical solution, the limit structure includes a vertical seat, a buffer and an anti-collision block arranged on the vertical seat, and both the buffer and the anti-collision block face the workbench.

[0013] As a further improvement of the above technical solution, a grating scale extending along the X-axis is arranged on the machine tool bed body, and the reading head of the grating scale is connected to the side surface of the workbench through a hanging bracket.

[0014] The beneficial effects of the present utility model: Compared with the prior art, the workbench driving structure of the numerical control machine tool provided by the present utility model respectively has a first wire routing port and a second wire routing port opened at the rear end face and the bottom face of the workbench. After the wires and coolant pipes connected to the linear motor pass through the second wire routing port and enter the workbench interior first, they then extend out of the workbench through the first wire routing port and are arranged in the drag chain. This not only solves the problems that the exposed wires and coolant pipes are prone to pollution and damage, but also avoids the problems that the wires and coolant pipes are wound to cause disconnection or interference with the normal movement of the workbench. When the workbench moves, the drag chain and the wires and coolant pipes in the drag chain bend and change following the movement of the workbench, and the wire routing is reasonable. Description of the Drawings

[0015] Figure 1 It is a three-dimensional view of the workbench arranged on the numerical control machine tool.

[0016] Figure 2 It is a three-dimensional view of the workbench arranged on the machine tool bed body.

[0017] Figure 3 It is a three-dimensional Figure 1 .

[0018] Figure 4 It is a three-dimensional Figure 2 .

[0019] Main element symbol description: 1-machine tool bed body, 2-linear motor, 21-rotor, 22-stator, 3-workbench, 31-first wire routing port, 32-second wire routing port, 33-perforation, 4-drag chain, 51-guide rail, 52-slider, 6-distributor, 7-clamping plate, 71-L-shaped groove, 8-limit structure, 81-vertical seat, 82-buffer, 83-anti-collision block, 91-grating scale, 92-hanging bracket. Detailed Description of the Embodiment

[0020] The utility model provides a worktable drive structure for a CNC machine tool. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the protection scope of the utility model.

[0021] See also Figure 1-Figure 4 The utility model provides a driving structure of a workbench 3 of a numerically controlled machine tool, comprising a linear motor 2 arranged on a machine tool bed 1, and a workbench 3 slidably arranged on the machine tool bed 1, a mover 21 of the linear motor 2 is fixedly connected to the bottom of the workbench 3 through a connecting plate (not visible in the figure), the interior of the workbench 3 is a hollow structure, a first wiring opening 31 is provided on the rear end face of the workbench 3, a second wiring opening 32 is provided on the bottom face of the workbench 3, and a drag chain 4 is connected to the first wiring opening 31 of the workbench 3 (the drag chain 4 is only schematically drawn).

[0022] In actual applications, the wires and coolant pipes connected to the linear motor 2 will first pass through the second wiring opening 32 to enter the interior of the workbench 3, then pass through the first wiring opening 31 to extend out of the workbench 3 and be arranged in the drag chain 4, which not only solves the problem that the wires and coolant pipes are exposed and easily contaminated and damaged, but also avoids the problem that the wires and coolant pipes are entangled, causing disconnection or interfering with the normal movement of the workbench 3. When the workbench 3 moves, the drag chain 4 and the wires and coolant pipes in the drag chain 4 bend and change with the movement of the workbench 3, and the wiring is reasonable.

[0023] Specifically, the machine tool bed 1 is provided with a guide rail 51 extending along the X-axis, and the bottom of the workbench 3 is fixed with a slider 52 for sliding connection with the guide rail 51. The workbench 3 can move horizontally along the X-axis accurately to move the workpiece to a set position for processing.

[0024] Preferably, a guide rail brake is fixedly connected to the bottom of the workbench 3. When the workbench 3 is moved into place, the guide rail brake clamps and fixes the guide rail 51, thereby limiting the movement of the workbench 3 and better ensuring the processing accuracy.

[0025] In order to ensure smooth sliding connection between the slider 52 and the guide rail 51, a plurality of through holes 33 for the lubrication pipeline to pass through are provided at the bottom of the workbench 3, and a support plate and a distributor 6 arranged on the support plate are provided inside the workbench 3, and the distributor 6 is connected to the lubrication pipeline. The oil supply is connected to the distributor 6 through a main oil delivery pipe, and the lubrication oil is distributed to each lubrication pipeline through the distributor 6, and then the lubrication oil drips onto the guide rail 51.

[0026] The workbench 3 is a square structure and is provided with a clamping plate 7 on the top surface. The clamping plate 7 is fixed to the workbench 3 by countersunk bolts. The clamping plate 7 is provided with a plurality of L-shaped grooves 71 arranged in parallel and extending along the Y axis. The fixture is fixed to the workbench 3 through the L-shaped grooves 71, and then the workpiece is fixed by the fixture.

[0027] In order to prevent the workbench 3 from leaving the guide rail 51 , limiting structures 8 are respectively provided at both ends of the stator 22 of the linear motor 2 .

[0028] Furthermore, the limiting structure 8 includes a stand 81 and a buffer 82 and an anti-collision block 83 disposed on the stand 81, and the buffer 82 and the anti-collision block 83 are both facing the workbench 3. Before the workbench 3 touches the anti-collision block 83, the buffer 82 will first contact the workbench 3 to absorb the moving potential energy of the workbench 3, thereby reducing the kinetic energy of the workbench 3 hitting the anti-collision block 83.

[0029] Preferably, a grating ruler 91 extending along the X-axis is provided on the machine tool bed 1, and a reading head of the grating ruler 91 is connected to the side of the workbench 3 through a bracket 92. The reading head of the grating ruler 91 moves with the movement of the workbench 3, thereby accurately detecting the position of the workbench 3 and ensuring the movement accuracy of the workbench 3.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A worktable driving structure for a CNC machine tool, characterized in that: It includes a linear motor arranged on a machine tool bed, and a workbench slidably arranged on the machine tool bed. The mover of the linear motor is fixedly connected to the bottom of the workbench through a connecting plate. The interior of the workbench is a hollow structure. A first wiring opening is opened on the rear end surface of the workbench, and a second wiring opening is opened on the bottom surface of the workbench. A drag chain is connected to the first wiring opening of the workbench.

2. The worktable driving structure of a CNC machine tool according to claim 1, characterized in that: The machine tool bed is provided with a guide rail extending along the X-axis, and the bottom of the workbench is fixedly connected with a sliding block for sliding connection with the guide rail.

3. The worktable driving structure of a CNC machine tool according to claim 2, characterized in that: A guide rail brake is fixedly connected to the bottom of the workbench.

4. The worktable driving structure of a CNC machine tool according to claim 1, characterized in that: The bottom of the workbench is provided with a plurality of through holes for the lubrication pipeline to pass through, and a support plate and a distributor arranged on the support plate are provided inside the workbench, and the distributor is connected with the lubrication pipeline.

5. The worktable driving structure of a CNC machine tool according to claim 1, characterized in that: The workbench is a square structure and a clamping plate is arranged on the top surface. The clamping plate is provided with a plurality of L-shaped grooves arranged in parallel and extending along the Y-axis.

6. The worktable driving structure of a CNC machine tool according to claim 1, characterized in that: The two ends of the stator of the linear motor are respectively provided with limiting structures.

7. The worktable driving structure of a CNC machine tool according to claim 6, characterized in that: The limiting structure comprises a stand and a buffer and an anti-collision block arranged on the stand, and the buffer and the anti-collision block both face the workbench.

8. The worktable driving structure of a CNC machine tool according to claim 1, characterized in that: The machine tool bed is provided with a grating ruler extending along the X-axis, and a reading head of the grating ruler is connected to the side of the workbench through a bracket.

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