Machine tool base and numerical control machine tool

Abstract

The utility model belongs to the technical field of machine tool structures, and discloses a machine tool base and a numerical control machine tool, the machine tool base comprises a base body and a sliding seat used for installing a workbench, the base body is provided with a collecting groove, the upper end of the collecting groove is provided with a liquid inlet opening, and the liquid inlet opening is formed below the workbench; the collecting tank recycles cooling cutting fluid used for machining of a machine tool through the liquid inlet opening. The base body is further provided with a liquid storage tank, the collecting tank is arranged above the liquid storage tank, the liquid storage tank is communicated with the collecting tank, and the liquid storage tank is used for containing cooling cutting fluid flowing in through the collecting tank. According to the machine tool base, the cooling cutting fluid is stored in the fluid storage tank, so that vibration and thermal expansion of the machine tool base are restrained, and the machining precision of a numerical control machine tool is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool structures, in particular to a machine tool base and a numerically controlled machine tool. Background Art

[0002] CNC machine tools, whose full name is digitally controlled machine tools, are automated equipment that use digital technology to control the movement and processing of machine tools through preset programs.

[0003] As the supporting structure of the entire machine tool, the base bears various forces and moments of the machine tool parts and during the processing. In high-precision CNC machine tools, the stability of the base is one of the key factors to ensure the processing accuracy.

[0004] Although the design of CNC machine tools has fully considered the stability of the base, the base may still vibrate and thermally expand during actual operation, which will indirectly reduce the processing accuracy.

[0005] Therefore, there is an urgent need for a machine tool base and a numerically controlled machine tool to solve the above-mentioned technical problems. Utility Model Content

[0006] The utility model aims to provide a machine tool base and a CNC machine tool, which store cooling cutting fluid in a liquid storage tank in the machine tool base to suppress vibration and thermal expansion of the machine tool base and improve the processing accuracy of the CNC machine tool.

[0007] To achieve this purpose, the present invention adopts the following technical solutions:

[0008] In the first aspect, a machine tool base is provided, comprising a base body and a sliding seat for mounting a workbench, wherein the base body is provided with a collecting tank, a liquid inlet opening is provided at the upper end of the collecting tank, the liquid inlet opening is provided below the workbench, and the collecting tank recovers the cooling cutting fluid used for machine tool processing through the liquid inlet opening; the base body is also provided with a liquid storage tank, the collecting tank is provided above the liquid storage tank, the liquid storage tank is communicated with the collecting tank, and the liquid storage tank is used to accommodate the cooling cutting fluid flowing in through the collecting tank.

[0009] Preferably, a plurality of bottom support beams are provided in the liquid storage tank, and the plurality of bottom support beams separate the liquid storage tank into at least two liquid storage sub-tanks. A plurality of connecting holes are provided on the bottom support beams, and the plurality of connecting holes connect two adjacent liquid storage sub-tanks.

[0010] Preferably, a liquid suction port is provided on the bottom wall or the side wall of the liquid storage tank, and the liquid suction port is connected to the coolant circulation pump through a pipeline.

[0011] Preferably, the machine tool base also includes a waste filter box, on which a liquid inlet port and a liquid outlet port are provided, a filtering structure is provided between the liquid inlet port and the liquid outlet port, the liquid inlet port is connected to the collection tank, and the liquid outlet port is connected to the liquid storage tank.

[0012] Preferably, a accommodating platform is provided above the liquid storage tank, the waste filter box is provided on the accommodating platform, and a avoidance hole is provided on the accommodating platform which passes through the upper and lower parts, the upper end of the avoidance hole is connected to the liquid outlet port, and the lower end of the avoidance hole is connected to the liquid storage tank.

[0013] Preferably, the machine tool base further comprises a main support beam, which is arranged above the waste filter box, and an avoidance gap is provided on the lower side of the main support beam, wherein the avoidance gap has an avoidance slope provided at an angle to the horizontal plane.

[0014] Preferably, the waste filter box is arranged beside the collection tank, and the machine tool base also includes a diversion channel, one end of the diversion channel is connected to the collection tank, and the other end is connected to the liquid inlet port. The diversion channel is arranged at an angle to the horizontal plane, and the diversion channel is inclined downward in the direction close to the liquid inlet port.

[0015] Preferably, the bottom height of the collecting tank is higher than the bottom height of the waste filter box.

[0016] Preferably, the filtration structure includes a first filter screen and a second filter screen, the first filter screen and the second filter screen are sequentially spaced apart along the liquid outlet direction, and the mesh aperture of the second filter screen is smaller than the mesh aperture of the first filter screen.

[0017] In a second aspect, a CNC machine tool is provided, comprising the machine tool base as described above.

[0018] Beneficial effects of the utility model:

[0019] The base body of the machine tool base provided by the present invention is provided with a liquid reservoir and a collecting tank, the liquid reservoir is connected to the collecting tank, and the liquid reservoir is closer to the bottom of the machine tool base than the collecting tank. When the CNC machine tool is working, the workpiece is processed on the workbench, and the cooling cutting fluid for flushing the workpiece enters the collecting tank through the liquid inlet opening, and then flows into the liquid reservoir. On the one hand, the cooling cutting fluid in the liquid reservoir increases the overall weight of the machine tool base, and the storage position of the cooling cutting fluid is close to the bottom of the machine tool base, which moves the center of the machine tool base downward and suppresses the vibration of the machine tool base. On the other hand, the cooling cutting fluid can directly cool the base body to suppress the thermal expansion of the machine tool base. In summary, the machine tool base provided by the present invention can suppress the vibration and thermal expansion of the machine tool base by storing the cooling cutting fluid in the liquid reservoir, thereby improving the machining accuracy of the CNC machine tool.

[0020] The CNC machine tool provided by the utility model has a liquid storage tank in the machine tool base. By storing cooling cutting fluid in the liquid storage tank, vibration and thermal expansion of the machine tool base are suppressed, thereby improving the processing accuracy of the CNC machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the machine tool base provided by the utility model Figure 1 (Waste filter box omitted);

[0022] Figure 2 This is a schematic diagram of the structure of the machine tool base provided by the utility model Figure 2 (Waste filter box omitted);

[0023] Figure 3 This is a top view of the machine tool base provided by the present invention (the waste filter box is hidden);

[0024] Figure 4 This is a cross-sectional view of the machine tool base provided by the utility model;

[0025] Figure 5 It is a structural schematic diagram of the waste filter box provided by the utility model.

[0026] In the picture:

[0027] 100, base body; 101, first lightening hole; 200, screw seat; 201, guide ramp; 300, sliding seat; 400, main support beam; 401, avoidance gap; 402, avoidance slope; 403, second lightening hole; 500, beam support; 501, third lightening hole;

[0028] 10. Liquid storage tank; 11. Liquid storage sub-tank; 12. Bottom support beam; 13. Connecting hole; 14. Accommodating platform; 15. Avoidance hole; 20. Collection tank; 21. Liquid inlet opening; 30. Waste filter box; 31. Liquid inlet port; 32. Liquid outlet port; 33. First filter screen; 34. Second filter screen; 40. Diversion channel; 41. Diversion bottom plate. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0030] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0033] This embodiment provides a CNC machine tool, which includes a machine tool base and functional modules such as a workbench, a spindle mechanism, a tool magazine, and a coolant circulation pump. Figure 1-Figure 5 As shown, the machine tool base includes a base body 100, a screw seat 200, a sliding seat 300, a main support beam 400 and a crossbeam support 500, wherein the screw seat 200 is used to install the transverse driving mechanism of the workbench, two sliding seats 300 are provided, and the two sliding seats 300 are symmetrically arranged on the left and right sides of the screw seat 200, and the workbench slides on the sliding seat 300, and the two crossbeam supports 500 are symmetrically arranged on both sides of the base body 100, and the two crossbeam supports 500 jointly support the main support beam 400 above the base body 100, and the main support beam 400 is used to install functional modules such as the spindle mechanism and the tool magazine.

[0034] It is understandable that the two cross beam supports 500 and the main support beam 400 can be cast as one piece to further improve the stability and rigidity of the machine tool base.

[0035] Further, such as Figures 1-4 As shown, the base body 100 is provided with a liquid storage tank 10 and a collecting tank 20. The collecting tank 20 is arranged above the liquid storage tank 10. The liquid storage tank 10 is communicated with the collecting tank 20. A liquid inlet opening 21 is provided at the upper end of the collecting tank 20. The liquid inlet opening 21 is provided below the screw seat 200 and the workbench. The collecting tank 20 recovers the cooling cutting fluid used for machine tool processing through the liquid inlet opening 21. Two guide inclined plates 201 are symmetrically provided on both sides of the upper end of the liquid inlet opening 21. The two guide inclined plates 201 are inclined from top to bottom toward the liquid inlet opening 21, and the cooling cutting fluid can be introduced into the liquid inlet opening 21. The liquid storage tank 10 is used to accommodate the cooling cutting fluid flowing in through the collecting tank 20.

[0036] Specifically, the CNC machine tool provided in this embodiment is provided with a liquid reservoir 10 and a collecting tank 20 in the machine base. The liquid reservoir 10 is connected to the collecting tank 20, and the liquid reservoir 10 is closer to the bottom of the machine base than the collecting tank 20. When the CNC machine tool is working, the workpiece is processed on the workbench, and the cooling cutting fluid for flushing the workpiece enters the collecting tank 20 through the liquid inlet opening 21, and then flows into the liquid reservoir 10. On the one hand, the cooling cutting fluid in the liquid reservoir 10 increases the overall weight of the machine base, and the storage position of the cooling cutting fluid is close to the bottom of the machine base, which moves the center of the machine base downward and suppresses the vibration of the machine base. On the other hand, the cooling cutting fluid can directly cool the base body 100 to suppress the thermal expansion of the machine base.

[0037] For example, Figure 4 As shown, a plurality of bottom support beams 12 are provided in the liquid storage tank 10, and the plurality of bottom support beams 12 separate the liquid storage tank 10 into at least two liquid storage sub-tanks 11. A plurality of connecting holes 13 are provided on the bottom support beam 12, and the plurality of connecting holes 13 connect the two adjacent liquid storage sub-tanks 11.

[0038] Specifically, if Figure 4 As shown, the liquid storage tank 10 is arranged to pass through the entire bottom of the base body 100 in the horizontal direction. In order to ensure the supporting strength of the base body 100, a plurality of bottom support beams 12 connecting the upper and lower surfaces are arranged in the liquid storage tank 10 for auxiliary support. By arranging connecting holes 13 in the bottom support beams 12, the various liquid storage sub-tanks 11 are connected to each other, thereby increasing the volume of the liquid storage tank 10 that can accommodate cooling cutting fluid. The more cooling cutting fluid in the liquid storage tank 10, the more stable the machine tool base, the better the vibration absorption effect, the better the cooling effect on the machine tool base, and the higher the temperature stability of the machine tool base.

[0039] Illustratively, a liquid suction port (not shown in the figure) is provided on the bottom wall or side wall of the liquid storage tank 10, and the liquid suction port is connected to the coolant circulation pump through a pipe. After the coolant circulation pump pumps the cooling cutting fluid from the liquid storage tank 10, it sprays it to the workpiece on the workbench through the nozzle to realize the recycling of the cooling cutting fluid.

[0040] For example, Figure 4 and Figure 5 As shown, the machine tool base also includes a waste filter box 30, which is provided with a liquid inlet port 31 and a liquid outlet port 32. The liquid inlet port 31 is connected to the collection tank 20, and the liquid outlet port 32 is connected to the liquid storage tank 10. A filter structure is provided between the liquid inlet port 31 and the liquid outlet port 32. The filter structure is used to filter waste materials such as metal debris from the cooling cutting fluid to prevent the waste materials from being sucked into the coolant circulation pump and causing malfunctions. The waste materials are collected by the waste filter box 30, making it easier for the operator to clean them.

[0041] For example, Figures 1-4 As shown, a receiving platform 14 is provided above the liquid storage tank 10, and a waste filter box 30 is provided on the receiving platform 14. A clearance hole 15 is provided on the receiving platform 14, which runs through the receiving platform 14 from top to bottom. The upper end of the clearance hole 15 is connected to the liquid outlet port 32, and the lower end of the clearance hole 15 is connected to the liquid storage tank 10. A main support beam 400 is provided above the waste filter box 30, and a clearance gap 401 is provided on the lower side of the main support beam 400. The clearance gap 401 has a clearance slope 402 arranged at an angle to the horizontal plane. The upper end of the waste filter box 30 is open, and the operator can clean the waste filtered out of the waste filter box 30 through the upper end. The setting of the clearance gap 401 provides sufficient clearance space for the operator's cleaning work and reduces safety risks such as head bumps.

[0042] Specifically, such as Figures 1-4 As shown, the accommodating platform 14 is arranged between the two crossbeam supports 500, and the upper outward side of the accommodating platform 14 has an operating space for operators to clean the waste filtered out of the waste filter box 30. Along the vertical downward direction, the avoidance slope 402 is inclined inward to increase the size of the space available for operators to clean the waste.

[0043] For example, Figures 1-4 As shown, the number of avoidance holes 15 can be greater than the number of waste filter boxes 30. The waste filter boxes 30 can be detachably connected to the accommodating platform 14 via a clamping structure or bolts, or can be directly placed on the accommodating platform 14. The aperture of the avoidance holes 15 is much larger than the aperture of the liquid outlet port 32. The aperture of the avoidance holes 15 is close to but smaller than the length and width dimensions of the waste filter box 30, specifically, it can be 70%-90% of the length and width dimensions of the waste filter box. Specifically, the provision of large-sized avoidance holes 15 makes it easier for the operator to observe the remaining amount of cooling cutting fluid in the liquid storage tank 10 and detect the cooling cutting fluid temperature. The operator can also add or reduce the cooling cutting fluid through the avoidance holes 15.

[0044] For example, Figure 4As shown, the waste filter box 30 is arranged beside the collection tank 20, and the machine tool base also includes a guide channel 40. One end of the guide channel 40 is connected to the collection tank 20, and the other end is connected to the liquid inlet port 31. The guide channel 40 is arranged at an angle to the horizontal plane, and the guide channel 40 is inclined downward in the direction close to the liquid inlet port 31. Specifically, a guide bottom plate 41 is provided in the guide channel 40. The guide bottom plate 41 is inclined downward in the direction close to the liquid inlet port 31. One end of the guide bottom plate 41 extends to the bottom of the collection tank 20, and the other end of the guide bottom plate 41 extends to the position of the liquid inlet port 31 of the waste filter box 30. Under the action of gravity, the cooling cutting fluid in the collection tank 20 automatically flows along the guide channel 40 toward the waste filter box 30, without the need for a separate pumping structure.

[0045] For example, Figure 4 As shown, the bottom height of the collecting tank 20 is higher than the bottom height of the waste filter box 30, which prevents the cooling cutting fluid from staying in the collecting tank 20 and the guide channel 40, improves the recovery and circulation efficiency of the cooling cutting fluid, and enhances the effect of cooling the machine tool base.

[0046] For example, Figure 5 As shown, the filtration structure includes a first filter 33 and a second filter 34, which are arranged in sequence along the liquid outlet direction. The mesh size of the second filter 34 is smaller than the mesh size of the first filter 33. Specifically, the liquid inlet port 31 is provided on the side wall of the waste filter box 30, and the liquid outlet port 32 is provided on the bottom wall of the waste filter box 30. The first filter 33 is arranged in the vertical direction, separating the liquid inlet port 31 and the liquid outlet port 32 in the horizontal direction, and performs preliminary filtration of the cooling cutting fluid. The second filter 34 is arranged in the horizontal direction and is installed at the upper end of the liquid outlet port 32 to further filter the cooling cutting fluid.

[0047] For example, Figure 2 As shown, a plurality of first weight-reducing holes 101 are provided on the base body 100 to reduce the weight of the base body 100 .

[0048] For example, Figure 1-Figure 3 As shown, a plurality of second weight-reducing holes 403 are provided on the main support beam 400 to reduce the weight of the main support beam 400 and reduce the load on the base body 100 and the beam support 500 .

[0049] For example, Figure 1-Figure 3 As shown, a plurality of third weight-reducing holes 501 are provided on the beam support 500 to reduce the weight of the beam support 500 and reduce the load on the base body 100 .

[0050] Exemplarily, the base body 100 is integrally formed by casting, and the base body 100 is made of cast iron.

[0051] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A machine tool base, comprising a base body (100) and a sliding seat (300) for mounting a workbench, characterized in that: The base body (100) is provided with a collecting tank (20), and a liquid inlet opening (21) is provided at the upper end of the collecting tank (20). The liquid inlet opening (21) is provided below the workbench. The collecting tank (20) recovers the cooling cutting fluid used for machine tool processing through the liquid inlet opening (21); the base body (100) is also provided with a liquid storage tank (10), and the collecting tank (20) is provided above the liquid storage tank (10). The liquid storage tank (10) is connected to the collecting tank (20), and the liquid storage tank (10) is used to accommodate the cooling cutting fluid flowing in through the collecting tank (20).

2. The machine tool base according to claim 1, characterized in that: A plurality of bottom support beams (12) are provided in the liquid storage tank (10), and the plurality of bottom support beams (12) separate the liquid storage tank (10) into at least two liquid storage sub-tanks (11). A plurality of communication holes (13) are provided on the bottom support beam (12), and the plurality of communication holes (13) communicate with two adjacent liquid storage sub-tanks (11).

3. The machine tool base according to claim 1, characterized in that: A liquid suction port is provided on the bottom wall or the side wall of the liquid storage tank (10), and the liquid suction port is connected to a coolant circulation pump through a pipeline.

4. The machine tool base according to any one of claims 1 to 3, characterized in that: The machine tool base further comprises a waste filter box (30), a liquid inlet port (31) and a liquid outlet port (32) are provided on the waste filter box (30), a filtering structure is provided between the liquid inlet port (31) and the liquid outlet port (32), the liquid inlet port (31) is communicated with the collecting tank (20), and the liquid outlet port (32) is communicated with the liquid storage tank (10).

5. The machine tool base according to claim 4, characterized in that: A receiving platform (14) is provided above the liquid storage tank (10), the waste filter box (30) is provided on the receiving platform (14), and a circumvention hole (15) is provided on the receiving platform (14) extending vertically therethrough, the upper end of the circumvention hole (15) being connected to the liquid outlet port (32), and the lower end of the circumvention hole (15) being connected to the liquid storage tank (10).

6. The machine tool base according to claim 5, characterized in that: The machine tool base further comprises a main support beam (400), the main support beam (400) being arranged above the waste filter box (30), a relief notch (401) being arranged on the lower side of the main support beam (400), and the relief notch (401) having a relief inclined surface (402) arranged at an angle to a horizontal plane.

7. The machine tool base according to claim 4, characterized in that: The waste filter box (30) is arranged beside the collecting tank (20), and the machine tool base further includes a guide channel (40), one end of the guide channel (40) is connected to the collecting tank (20), and the other end is connected to the liquid inlet port (31), and the guide channel (40) is arranged at an angle to the horizontal plane, and in a direction close to the liquid inlet port (31), the guide channel (40) is inclined downward.

8. The machine tool base according to claim 7, characterized in that: The bottom height of the collecting tank (20) is higher than the bottom height of the waste filter box (30).

9. The machine tool base according to claim 4, characterized in that: The filtering structure comprises a first filter screen (33) and a second filter screen (34), wherein the first filter screen (33) and the second filter screen (34) are sequentially spaced apart along the liquid outlet direction, and the mesh aperture of the second filter screen (34) is smaller than the mesh aperture of the first filter screen (33).

10. A CNC machine tool, characterized in that: The machine tool base comprises the machine tool base according to any one of claims 1 to 9.

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