Machine tool driving module

Abstract

The utility model discloses a machine tool driving module which comprises an installation base, a linear motor and a first sliding block, the installation base is assembled on a machine base in a sliding mode through the first sliding block, the installation base is connected with a workbench through a connecting piece, and the connecting piece only limits the relative freedom degree of the installation base and the workbench in the first direction. The first direction is the sliding direction of the mounting base, and the workbench slides relative to the machine base under the traction of the mounting base; the linear motor comprises a coil assembled at the bottom of the mounting base and a magnetic plate assembled on the machine base. According to the driving module, the linear rail sliding block and the linear motor are combined to drive the working table to move, the coil is installed on the independent installation base, then the linear motor is separated from the working table in the mode that the installation base is in transition connection with the working table, the working table is driven only through thrust, the influence of suction force of the linear motor on the working table is avoided, and transmission is stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine tools, and particularly relates to a machine tool drive module. Background Art

[0002] The existing machine tool drive modes mainly include the following several types: hydraulic cylinder drive, rack and pinion drive, ball screw drive, and linear motor drive. All of the above drive modes have certain disadvantages: the hydraulic cylinder drive mode has low energy efficiency, a complex system, is greatly affected by temperature, and has leakage problems and low positioning accuracy; the rack and pinion drive mode is prone to backlash and high noise during installation, and there are vibrations and heat generation during high-speed operation; the ball screw drive mode is prone to whipping and vibration during large strokes and cannot be applied to high-speed and large strokes; in the linear motor drive mode, when the linear motor is installed vertically, the installation difficulty is high, the single drive has uneven force, and the cost of the double drive doubles; when the linear motor is laid flat at the bottom of the workbench, in addition to generating the thrust to drive the workbench to move, it will also generate a downward suction force, and when the suction force is too large, it will affect the running stability of the workbench. Different running speeds have different suction forces on the workbench, affecting the running accuracy, and the workbench is prone to deformation. Summary of the Invention

[0003] Aiming at the problem that the suction force is too large when the linear motor drives the machine tool and affects the running stability of the machine tool, the utility model provides a machine tool drive module. The invention object of the utility model is realized through the following technical solutions:

[0004] A machine tool drive module includes a mounting seat, a linear motor, and a first slider. The mounting seat is slidably assembled on the machine base through the first slider, and the mounting seat is connected to the workbench through a connecting member. The connecting member only restricts the relative freedom degree of the mounting seat and the workbench in the first direction. The first direction is the sliding direction of the mounting seat, and the workbench slides relative to the machine base under the traction of the mounting seat; the linear motor includes a coil assembled at the bottom of the mounting seat and a magnetic plate assembled on the machine base.

[0005] Preferably, the workbench is installed behind the mounting seat, and there is a height difference between the workbench and the mounting seat. The connecting member is a connecting frame, which includes a horizontal plate and a vertical plate perpendicular to each other. The horizontal plate is fixedly connected to the upper end surface of the mounting seat, and through holes for bolts to pass through are provided on the vertical plate. After the bolts pass through the through holes, they are fixedly connected to the front end surface of the workbench. The through holes penetrate along the horizontal direction, and the aperture of the through holes in the vertical direction is larger than the outer diameter of the bolts.

[0006] Preferably, a common linear guide rail extending in the first direction is provided on the machine base. The first slider is slidably matched with the common linear guide rail, and a second slider slidably matched with the common linear guide rail is assembled at the bottom of the workbench.

[0007] Preferably, a first linear guide rail and a second linear guide rail are provided on the machine base. Both the first linear guide rail and the second linear guide rail extend along a first direction. The first slider is slidably engaged with the first linear guide rail; a second slider that cooperates with the second linear guide rail is assembled at the bottom of the workbench.

[0008] Preferably, the workbench is arranged above the mounting base. The connecting member is a connecting pin. One end of the connecting pin is fixedly connected to the upper end face of the mounting base, and the other end of the connecting pin is inserted into the bottom of the workbench. And the connecting pin can float up and down relative to the workbench under the action of an external force.

[0009] Preferably, a sunken assembly groove extending along the first direction is provided on the upper end face of the machine base. The mounting base is slidably assembled in the sunken assembly groove. A first linear guide rail extending along the first direction is assembled in the sunken assembly groove. The first slider is slidably engaged with the first linear guide rail; a second linear guide rail extending along the first direction is assembled outside the sunken assembly groove. The workbench straddles above the sunken assembly groove, and a second slider that cooperates with the second linear guide rail is assembled at the bottom of the workbench.

[0010] Compared with the prior art, the utility model has the following beneficial effects: This driving module uses a combination of a linear guide rail slider and a linear motor to drive the movement of the workbench. The coil is installed on an independent mounting base, and then through the way of transitional connection between the mounting base and the workbench, the linear motor is separated from the workbench, and only the thrust is used to drive the workbench, avoiding the influence of the suction force of the linear motor on the workbench, and the transmission is stable; the connection method between the mounting base and the workbench is reasonable. The connecting member only restricts the relative degrees of freedom of the two in the sliding direction, and has appropriate adjustment amounts in the vertical direction to adapt to the downward suction force of the linear motor, effectively buffering the suction force to further reduce the influence of the suction force on the workbench; the installation method of the workbench and the mounting base is flexible and can be selected and adjusted according to specific situations, with strong adaptability. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of Embodiment 1;

[0012] Figure 2 It is another schematic structural diagram of Embodiment 1;

[0013] Figure 3 It is a schematic structural diagram of Embodiment 2;

[0014] Markings in the figure: Machine base 10; Magnetic plate 11; Common linear guide rail 12; Sunken assembly groove 13; First linear guide rail 14; Second linear guide rail 15; Mounting base 20; Coil 21; First slider 22; Workbench 30; Second slider 31; Connecting frame 40; Horizontal plate 41; Vertical plate 42. Detailed Embodiments

[0015] The following further describes the present utility model in conjunction with the embodiments shown in the drawings:

[0016] Example 1

[0017] See also Figure 1 , Figure 2 , this embodiment discloses a machine tool drive module, including a mounting seat, a linear motor and a first slider 22, the mounting seat 20 is slidably assembled on the machine base 10 through the first slider 22, and the mounting seat 20 is connected to the workbench 30 through a connecting piece, the connecting piece only limits the freedom of the mounting seat 20 and the workbench 30 in the first direction, the first direction is the sliding direction of the mounting seat 20, and the workbench 30 slides relative to the machine base under the traction of the mounting seat 20; the linear motor assembly includes a coil 21 assembled at the bottom of the mounting seat 20 and a magnetic plate 11 assembled on the machine base 10. This drive module uses a linear rail slider and a linear motor combination to drive the workbench 30 to move, the coil 21 is installed on an independent mounting seat 20, and then the linear motor is isolated from the workbench 30 by transition connection between the mounting seat 20 and the workbench 30, the connection method between the mounting seat 20 and the workbench 30 is reasonable, the connecting piece only limits the relative freedom of the two in the sliding direction, and the workbench 30 is driven only by thrust, avoiding the influence of the suction of the linear motor on the workbench 30, and the transmission is stable.

[0018] The workbench 30 is installed at the rear of the mounting base 20, and there is a height difference between the workbench 30 and the mounting base 20. The connecting member is a connecting frame 40, and the connecting frame 40 includes a horizontal plate 41 and a vertical plate 42 which are perpendicular to each other. The horizontal plate 41 is fixedly connected to the upper end surface of the mounting base 20, and the vertical plate 42 is provided with a through hole for the bolt to pass through. After the bolt passes through the through hole, it is fixedly connected to the front end surface of the workbench 30. The through hole penetrates in the horizontal direction, and the hole diameter of the through hole in the vertical direction is larger than the outer diameter of the bolt. Specifically, the through hole is a waist-shaped hole, so that the mounting base 20 and the workbench 30 have an appropriate amount of adjustment in the vertical direction. When the mounting base 20 is subjected to a downward magnetic attraction, the attraction can be effectively buffered, thereby further reducing the influence of the magnetic attraction on the workbench 30. In actual applications, the connecting parts can also be selected from slide rail assemblies or spring sheets according to actual conditions. When the slide rail assembly is used, the guide rail is installed on the workbench in the vertical direction, and the slider is installed on the mounting seat. The slider and the slide rail slide in cooperation. When the mounting seat is subjected to a downward magnetic force, the slider can float up and down along the vertical slide rail to effectively buffer the magnetic force. When the spring sheet is used, the spring sheet is installed in the horizontal direction, one end of which is fixed on the mounting seat, and the other end is fixed on the workbench. When the mounting seat is subjected to a magnetic force, the spring sheet can float up and down through the deformation of the spring sheet to effectively buffer the magnetic force.

[0019] A common linear guide 12 extending in the first direction is provided on the machine base. The first slider is assembled at the bottom of the mounting seat 20 and is slidably engaged with the common linear guide 12. A second slider 31 cooperating with the common linear guide 12 is assembled at the bottom of the workbench 30. The mounting seat 20 and the workbench 30 can share the linear guide of the original workbench 30, and the two share one linear guide. In practical applications, a linear guide can also be added to the machine base. The mounting seat 20 uses one linear guide independently, and both linear guides extend in the first direction. The first slider 22 is slidably engaged with the first linear guide, and the second slider 31 cooperating with the second linear guide is assembled at the bottom of the workbench 30. The number of linear guides is selected according to the actual situation, and the installation method is flexible and has strong adaptability.

[0020] Embodiment 2

[0021] See Figure 3 , which discloses a machine tool drive module, including a mounting seat, a linear motor and a first slider 22. The mounting seat 20 is slidably assembled on the machine base 10 through the first slider 22, and the mounting seat 20 is connected to the workbench 30 through a connecting member. The connecting member only restricts the degrees of freedom of the mounting seat 20 and the workbench 30 in the first direction. The first direction is the sliding direction of the mounting seat 20, and the workbench 30 slides relative to the machine base under the traction of the mounting seat 20. The linear motor assembly includes a coil 21 assembled at the bottom of the mounting seat 20 and a magnetic plate 11 assembled on the machine base 10. This drive module uses a combination of a linear guide slider and a linear motor to drive the movement of the workbench 30. The coil 21 is installed on an independent mounting seat 20, and then through the transitional connection method between the mounting seat 20 and the workbench 30, the linear motor is separated from the workbench 30. The connection method between the mounting seat 20 and the workbench 30 is reasonable. The connecting member only restricts the relative degrees of freedom of the two in the sliding direction, and only uses thrust to drive the workbench 30, avoiding the influence of the suction force of the linear motor on the workbench 30, and the transmission is stable.

[0022] The workbench 30 is arranged above the mounting seat 20. The connecting member is a connecting pin. One end of the connecting pin is fixedly connected to the upper end face of the mounting seat 20, and the other end of the connecting pin is inserted into the bottom of the workbench 30. And the connecting pin can float up and down relative to the workbench 30 under the action of an external force, so that the mounting seat 20 and the workbench 30 have an appropriate adjustment amount in the vertical direction. When the mounting seat 20 is subjected to a downward magnetic suction force, it can effectively buffer the suction force and further reduce the influence of the magnetic suction force on the workbench 30.

[0023] A sunken assembly groove 13 extending in the first direction is provided on the upper end surface of the machine base. The mounting seat 20 is slidably assembled in the sunken assembly groove 13. A first linear guide 14 extending in the first direction is assembled in the sunken assembly groove 13. The first slider is assembled at the bottom of the mounting seat 20 and is slidably engaged with the first linear guide 14. A second linear guide 15 extending in the first direction is assembled outside the sunken assembly groove 13. The workbench 30 straddles above the lower linear assembly groove, and a second slider cooperating with the second linear guide 15 is assembled at the bottom of the workbench 30. The workbench 30 and the mounting seat 20 distributed vertically use different linear guides, and the operation is more stable. Moreover, the linear guides are distributed on different planes, making the structure of the entire machine tool more compact.

[0024] The driving module disclosed in the present utility model uses a combination of a linear guide slider and a linear motor to drive the movement of the workbench 30. It not only has the characteristics of a simple structure, high speed and acceleration, high operation accuracy, and simple maintenance of the linear motor driving module, but also eliminates the influence of the magnetic attraction of the linear motor on the workbench 30 through the transitional connection method of the mounting seat 20. Moreover, the installation method is flexible. The linear guide can be independent or shared with the original workbench 30. The mounting seat 20 and the workbench 30 can be distributed front and back or vertically, with strong adaptability, flexibility and reliability, effectively solving the problem that the magnetic attraction of the linear motor affects the running stability of the workbench 30.

[0025] It should be understood that in the claims and the specification of the present utility model, all "including..." should be understood in an open sense, that is, its meaning is equivalent to "at least including...", rather than in a closed sense, that is, its meaning should not be understood as "only including...". The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0026] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Changes, modifications, additions or substitutions made by those skilled in the art within the substantial scope of the present utility model should all be covered by the protection scope of the utility model.

Claims

1. A machine tool drive module, characterized in that: It includes a mounting seat, a linear motor and a first slider. The mounting seat is slidably assembled on the machine base through the first slider, and the mounting seat is connected to the workbench through a connecting piece. The connecting piece only limits the relative freedom of the mounting seat and the workbench in the first direction. The first direction is the sliding direction of the mounting seat, and the workbench slides relative to the machine base under the traction of the mounting seat; the linear motor includes a coil assembled on the bottom of the mounting seat, and a magnetic plate assembled on the machine base.

2. A machine tool drive module according to claim 1, characterized in that: The workbench is installed behind the mounting seat, and there is a height difference between the workbench and the mounting seat. The connecting piece is a connecting frame.

3. A machine tool drive module according to claim 2, characterized in that: The connecting frame includes a horizontal plate and a vertical plate which are perpendicular to each other. The horizontal plate is fixedly connected to the upper end surface of the mounting seat. The vertical plate is provided with a through hole for bolts to pass through. After the bolts pass through the through hole, they are fixedly connected to the front end surface of the workbench. The through hole penetrates in the horizontal direction, and the hole diameter of the through hole in the vertical direction is larger than the outer diameter of the bolt.

4. A machine tool drive module according to claim 3, characterized in that: The machine base is provided with a common linear rail extending along a first direction, the first slider is slidably matched with the common linear rail, and the bottom of the workbench is equipped with a second slider slidably matched with the common linear rail.

5. A machine tool drive module according to claim 3, characterized in that: The machine base is provided with a first linear rail and a second linear rail, both of which extend along a first direction, and the first slider is slidably matched with the first linear rail; the bottom of the workbench is equipped with a second slider matched with the second linear rail.

6. A machine tool drive module according to claim 1, characterized in that: The workbench is arranged above the mounting seat, and the connecting member is a connecting pin, one end of which is fixedly connected to the upper end surface of the mounting seat, and the other end of the connecting pin is inserted into the bottom of the workbench, and the connecting pin can float up and down relative to the workbench under the action of external force.

7. A machine tool drive module according to claim 6, characterized in that: The upper end surface of the machine base is provided with a sunken assembly groove extending along the first direction, and the mounting seat is slidably assembled in the sunken assembly groove, and a first linear rail extending along the first direction is installed in the sunken assembly groove, and the first slider is slidably matched with the first linear rail; the outer side of the sunken assembly groove is equipped with a second linear rail extending along the first direction, the workbench spans above the sunken assembly groove, and a second slider matched with the second linear rail is installed at the bottom of the workbench.

Images