Novel vertical machining tool and linear driving structure applied to same

Abstract

The utility model provides a novel vertical processing machine tool and a linear driving structure applied to the vertical processing machine tool, the linear driving structure comprises double linear motor modules, a single linear motor module is provided with a magnetic plate magnetic track and a coil sliding block capable of moving back and forth along the length direction of the magnetic plate magnetic track; the double linear motor modules are arranged in parallel at intervals, two coil sliding blocks on the double linear motor modules are oppositely arranged face to face, and an external plate is connected between the two coil sliding blocks; the X-axis drive, the Y-axis drive and the Z-axis drive of the vertical machine tool all adopt the layout design of the double-linear-motor module, compared with the design of a U-shaped linear motor, under the same installation size, the thrust can be larger than that of the U-shaped motor, stress deformation of long-time magnetic attraction force to an installation face is avoided, meanwhile, large thrust and large acceleration can be guaranteed, and the service life of the vertical machine tool is prolonged. And high-speed cutting, high-speed machining and high machining efficiency are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vertical machining center technical field, especially a kind of novel vertical machining center and linear drive structure applied to vertical machining center. BACKGROUND

[0002] Vertical machining center is a kind of highly automated multifunctional numerical control machine tool with tool magazine and automatic tool changer. Vertical machining center can complete milling, boring, drilling, tapping and thread cutting processes. Vertical machining center is at least three-axis two-linkage, and generally can realize three-axis three-linkage.

[0003] Vertical machining center refers to machining center with vertical spindle. Its structure is mostly fixed column, and worktable is rectangular without indexing rotation function, which is suitable for machining disc, sleeve and plate parts. It generally has three linear motion coordinate axes, and can install a rotary table rotating along horizontal axis on worktable to process helical line parts.

[0004] The existing technology CN205764927U discloses a vertical machining center, which comprises a Z-axis movement part and a bed. The Z-axis movement part comprises two columns connected to the top surface of the bed, two motor connecting plates connected to the two columns respectively, an inner cavity formed between the two motor connecting plates and the two columns, a spindle box inserted into the inner cavity, a main shaft embedded in the lower end of the spindle box, and a Z-axis linear motor module between the spindle box and the motor connecting plate.

[0005] The linear drive part of the above scheme realizes single-axis linear motion by adopting conventional screw nut motor mode. The efficiency of screw nut transmission is generally low, and the transmission process consumes a lot of energy and generates a lot of noise. The existing technology also adopts single linear motor transmission mode. However, the conventional linear motor flat installation mode cannot offset the magnetic attraction force, which easily causes stress deformation of the installation surface under the action of long-term magnetic attraction force, and it is difficult to ensure the accuracy of machining precision during long-term use. CONTENT OF UTILITY MODEL

[0006] Therefore, the utility model aims to provide a novel vertical machining center and linear drive structure applied to vertical machining center, which adopts back-to-back double linear motor module drive layout design to offset the magnetic attraction force of installation surface.

[0007] To achieve the above purpose, the utility model adopts the following content:

[0008] A linear drive structure applied to a vertical machining tool, characterized in that it comprises double linear motor modules, the linear motor modules have magnetic plate tracks and coil sliders capable of moving back and forth along the length direction of the magnetic plate tracks, the double linear motor modules are arranged in parallel and at intervals, and the two coil sliders of the double linear motor modules are arranged face to face, and the two coil sliders are connected to an external plate block.

[0009] The utility model discloses another aspect adopts the following content:

[0010] A novel vertical machining tool, comprising a bed body and a stand, the bed body surface has a movable workbench, the stand is provided with a movable main shaft for mounting a machining tool, wherein a first linear drive structure as described above is arranged along the length direction of the bed body, the first external plate block of the first linear drive structure is connected to the workbench; a second linear drive structure as described above is arranged along the width direction of the stand, the second external plate block of the second linear drive structure is connected to the main shaft; a third linear drive structure as described above is arranged along the height direction of the movable main shaft, and the third external plate block of the third linear drive structure is connected to the machining tool.

[0011] Further, the workbench is horizontally arranged, and the bottom end of the workbench is connected to the top of the first external plate block of the first linear drive structure, the first linear drive structure is arranged along the Y-axis direction of the novel vertical machining tool, and the two coil sliders of the first linear drive structure are perpendicular to the surface of the bed body.

[0012] Further, the movable main shaft is vertically arranged, and the outer end of the movable main shaft is connected to the side of the second external plate block of the second linear drive structure, the second linear drive structure is arranged along the X-axis direction of the novel vertical machining tool, and the two coil sliders of the second linear drive structure are perpendicular to the inner side surface of the stand.

[0013] Further, the third linear drive structure is arranged along the Z-axis direction of the novel vertical machining tool, and the two coil sliders of the third linear drive structure are perpendicular to the outer side surface of the movable main shaft.

[0014] Compared with the prior art, the utility model has following technical effects: The utility model simple structure, reasonable in design. Back to back perpendicular to the double linear motor module layout design of mounting surface, compared to the single motor module design of flat installation surface and unable to offset magnetic attraction, can offset magnetic attraction in any case, avoid long time magnetic attraction to the stress deformation of mounting surface, guarantee long -term precision stability;Back to back perpendicular to the double linear motor module layout design of mounting surface, compared to U type linear motor design, same installation size, the thrust can be bigger than U type motor, avoid long time magnetic attraction to the stress deformation of mounting surface, still can guarantee big thrust, big acceleration, realize high speed chip high speed processing and processing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] The specific embodiments of the utility model will be further explained in detail below in combination with the drawings.

[0016] Figure 1 It is a simple schematic diagram of linear drive structure applied to vertical machining machine tool of the utility model embodiment;

[0017] Figure 2 It is a simple schematic diagram of novel vertical machining machine tool of the utility model embodiment;

[0018] The relevant marks in the drawings: a - mounting surface, 1 - linear motor module, 11 - magnetic plate magnetic track, 12 - coil slider, 13 - external plate block, 2 - bed, 3 - column, 4 - worktable, 5 - movable main shaft, 6 - processing cutter. PREFERRED EMBODIMENT

[0019] In order to more clearly illustrate the utility model, the utility model will be further explained below in combination with preferred embodiment. The person skilled in the art should understand that the following specifically described content is illustrative and not restrictive, and the protection scope of the utility model should not be limited thereto.

[0020] In the description of the utility model, it should be explained that unless there is explicit provision and limitation, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixed connection, or through detachable connection, or integrally connected;Can be mechanical connection, or electrical connection;Can be directly connected, or indirectly connected through intermediate medium, can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0021] Please refer to Figure 1 As shown in the related schematic diagram of bed surface.

[0022] Embodiment 1:

[0023] The embodiment of the utility model provides a linear drive structure applied to vertical processing machine tool, adopt two group structure consistent linear motor module 1, single linear motor module 1 all have magnetic plate magnetic track 11 and the coil slider 12 that can move back and forth along the length direction of magnetic plate magnetic track 11, two group linear motor module 11 parallel interval is laid out, and two coil sliders 12 on two group linear motor module 1 are laid out face to face, and one external plate piece 13 is connected between two coil sliders 12.

[0024] Back-to-back double linear motor module layout design perpendicular to the mounting surface a, compared with the single motor module design that cannot offset magnetic attraction force of the flat mounting surface, can offset magnetic attraction force in any case, avoid long time magnetic attraction force stress deformation to mounting surface a, ensure long-term precision stability.

[0025] Please refer to Figure 2 As shown in the figure.

[0026] Embodiment 2: based on the linear drive structure proposed in embodiment 1, the utility model embodiment proposes a new vertical processing machine tool, the machine tool itself includes bed 2 and column 3, the bed 2 surface has movable workbench 4, the column 3 has movable main shaft 5 for installing processing tool 6.

[0027] Wherein, along the length direction of the bed, a linear drive structure as described above is arranged, a first external plate piece of the first linear drive structure is connected to the workbench; the workbench is horizontally arranged, the bottom end of the workbench is connected to the top of the first external plate piece of the first linear drive structure, the two linear motor modules of the first linear drive structure are arranged along the Y axis direction of the new vertical processing machine tool, and the two coil sliders of the first linear drive structure are perpendicular to the surface of the bed.

[0028] Wherein, along the width direction of the column, a second linear drive structure as described above is arranged, a second external plate piece of the second linear drive structure is connected to the main shaft; the movable main shaft is vertically arranged, the outer end of the movable main shaft is connected to the side of the second external plate piece of the second linear drive structure, the double linear motor modules of the second linear drive structure are arranged along the X axis direction of the new vertical processing machine tool, and the two coil sliders of the second linear drive structure are perpendicular to the inner side of the column.

[0029] Wherein, along the height direction of the movable main shaft, a third linear drive structure as described above is arranged, a third external plate piece of the third linear drive structure is connected to the processing tool; the double linear motor modules of the third linear drive structure are arranged along the Z axis direction of the new vertical processing machine tool, and the two coil sliders of the third linear drive structure are perpendicular to the outer side of the movable main shaft.

[0030] Most machine tool drive adopts parallel structure, the biggest disadvantage of parallel structure linear motor is linear motor magnetic force influence, resulting in the flatness of the worktable is not ideal, shorten the life of linear motor.

[0031] And the vertical machining center of the embodiment of X axis, Y axis, Z axis drive are all using double linear motor module layout design, namely back to back perpendicular to the mounting surface double linear motor module layout design, compared with U type linear motor design, under the same installation size, the thrust can be larger than U type motor, avoid long time magnetic force on the mounting surface stress deformation, but also can guarantee big thrust, big acceleration, realize high speed chip high speed machining and machining efficiency.

[0032] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model, and for ordinary skilled in the art, on the basis of the above description, other different forms of changes or changes can be made, here cannot be exhausted all the embodiments, all belong to the utility model of the technical scheme of the extension of the obvious changes or changes still in the protection scope of the utility model.

Claims

1. A linear drive structure applied to a vertical machining tool, characterized in that, The system includes a dual linear motor module, which has a magnetic plate track and a coil slider that can move back and forth along the length of the magnetic plate track. The dual linear motor modules are arranged in parallel at intervals, and the two coil sliders on the dual linear motor modules are arranged face to face. The two coil sliders are connected to an external plate.

2. A novel vertical machining center, comprising a bed and a column, wherein the bed surface has a movable worktable, and the column has a movable spindle for mounting machining tools, characterized in that, A first linear drive structure as described in claim 1 is arranged along the length of the bed, and the first external plate of the first linear drive structure is connected to the worktable; a second linear drive structure as described in claim 1 is arranged along the width of the column, and the second external plate of the second linear drive structure is connected to the spindle; a third linear drive structure as described in claim 1 is arranged along the height of the movable spindle, and the third external plate of the third linear drive structure is connected to the machining tool.

3. A novel vertical machining center according to claim 2, characterized in that, The worktable is arranged horizontally, with its bottom center connected downwards to the top of the first external plate of the first linear drive structure. The first linear drive structure is arranged along the Y-axis of the new vertical machining center, and the two coil sliders of the first linear drive structure are perpendicular to the surface of the machine bed.

4. A novel vertical machining center according to claim 2, characterized in that, The movable spindle is vertically arranged, and the middle of the outer end of the movable spindle is connected inward to the side of the second external plate of the second linear drive structure. The second linear drive structure is arranged along the X-axis direction of the new vertical machining tool, and the two coil sliders of the second linear drive structure are perpendicular to the inner side of the column.

5. A novel vertical machining center according to claim 2, characterized in that, The No. 3 linear drive structure is arranged along the Z-axis direction of the novel vertical machining tool, and the two coil sliders of the No. 3 linear drive structure are perpendicular to the outer surface of the movable spindle.

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