Machine tool

Abstract

The utility model discloses a machine tool. The machine tool comprises a base and a protection assembly. A driving shaft is arranged on the base; the protection assembly comprises a first protection cover and a second protection cover, the first protection cover is installed on the base and covers the second protection cover, a first filtering layer is arranged in a gap between the first protection cover and the base, the second protection cover is installed on the base and covers the driving shaft, and a second filtering layer is arranged in the gap between the first protection cover and the second protection cover. And a second filter layer is arranged in a gap between the second protective cover and the base. The machine tool can solve the problems that in the prior art, graphite dust easily enters a protection device, a driving shaft of the machine tool can be damaged for a long time, and the machining precision of the machine tool is seriously affected.

Description

Technical Field

[0001] The utility model relates to the technical field of high-speed graphite processing, in particular to a machine tool. Background Art

[0002] During the graphite processing, a large amount of graphite dust will be generated inside the machine tool. If there are no effective protective measures, it will corrode the internal parts of the machine tool, especially the high-precision parts such as the lead screw, motor, and grating scale of the drive shaft.

[0003] In order to prevent the graphite and carbon block particles and dust from damaging the machine tool, the current protection work mainly includes: the machine tool moving and non-moving parts generally adopt a sealed maze protection design method, and use positive pressure airflow to protect the inside of the moving parts, thereby avoiding the entry of graphite carbon block particles and dust; linear guides, transmission elements, CNC indexing tables and other machine tool transmission parts should be protected by positive pressure airflow to prevent particle powder from entering the interior of each component, thereby affecting the accuracy of the machine tool. However, due to the small particle size of graphite dust during graphite processing, mainly distributed in the range of 0.1μm to 1μm, the graphite dust generated is very small, and it is easy to enter the interior of the protective device under the above strict protection, which will damage the drive shaft of the processing machine tool for a long time and seriously affect the processing accuracy of the processing machine tool. Utility Model Content

[0004] The main purpose of the utility model is to provide a machine tool, which at least solves the problem in the prior art that graphite dust easily enters the interior of the protective device, damages the driving shaft of the processing machine tool after a long time, and seriously affects the processing accuracy of the processing machine tool.

[0005] According to one aspect of the utility model, there is provided a machine tool, comprising:

[0006] A base, wherein a driving shaft is arranged on the base;

[0007] A protection component, the protection component includes a first protection cover and a second protection cover, the first protection cover is installed on the base and covers the outside of the second protection cover, and a first filter layer is arranged in the gap between the first protection cover and the base, the second protection cover is installed on the base and covers the outside of the drive shaft, and a second filter layer is arranged in the gap between the second protection cover and the base.

[0008] Furthermore, the first filter layer and the second filter layer each include at least one of an electrostatic cotton layer and an activated carbon layer.

[0009] Furthermore, the base is provided with grooves at positions on opposite sides of the driving shaft, the machine tool also includes a chip conveyor, the chip conveyor is at least partially embedded in the groove, the bottom end of the first protective cover extends into the interior of the chip conveyor, and the first filter layer is provided between the bottom end of the first protective cover and the inner wall surface of the chip conveyor.

[0010] Furthermore, the first filter layer is bonded to the inner wall surface of the chip conveyor via a glue layer.

[0011] Furthermore, the base is provided with protrusions at positions on opposite sides of the driving shaft, and on the same side of the driving shaft, the protrusions are closer to the driving shaft than the grooves, the bottom end of the second protective cover extends to the side of the protrusions close to the grooves, and the second filter layer is provided between the second protective cover and the outer wall surface of the protrusions.

[0012] Furthermore, the second filter layer is bonded to the outer wall surface of the protrusion via an adhesive layer.

[0013] Further, a first protective plate and a second protective plate are respectively provided at both ends of the driving shaft, the machine tool also includes a workbench, the workbench is slidably provided on the driving shaft, the first protective cover includes a first part and a second part, and along the axial direction of the driving shaft, the first part and the second part are respectively provided on both sides of the workbench;

[0014] One end of the first part is sealed and connected to the first protective plate, and the other end of the first part is connected to the workbench; one end of the second part is sealed and connected to the second protective plate, and the other end of the second part is connected to the workbench.

[0015] Further, the second protective cover includes a third part and a fourth part, and the third part and the fourth part are respectively arranged on both sides of the workbench;

[0016] Wherein, the ends of the third part and the fourth part facing away from the workbench are respectively connected to the base, and the ends of the third part and the fourth part close to the workbench are respectively connected to the workbench.

[0017] Furthermore, the first protective cover and the second protective cover each include a bracket and an outer cover, the bracket can be extended and retracted along the axial direction of the drive shaft, and the outer cover is fixedly connected to the bracket by screws or bolts.

[0018] Furthermore, the outer cover includes at least one of an accordion protective cover and a retractable steel plate protective cover.

[0019] In the utility model, by arranging the first protective cover and the second protective cover outside the drive shaft, the double-layer protective cover can ensure the cleanliness of the inside of the machine tool and protect the drive shaft and other related mechanical parts from damage. The second protective cover is closely matched with the drive shaft to prevent particles such as graphite dust from entering the bearings and other sensitive parts. The first protective cover provides an additional protective layer connected to the machine tool to prevent the influence of external environmental factors on the inside of the machine tool. This double-layer protection can effectively protect the components inside the machine tool under different environments, especially under harsh environmental conditions such as high temperature, high humidity or dusty environment. The double-layer protection can greatly reduce maintenance costs and extend the service life of the machine tool. At the same time, a first filter layer is arranged in the gap between the first protective cover and the base, which can effectively prevent graphite dust from entering the cavity of the processing machine tool; a second filter layer is arranged in the gap between the second protective cover and the base, which can greatly reduce the graphite dust from entering the inside of the drive shaft, reduce the damage of graphite processing dust to the drive shaft, and improve the processing accuracy of the graphite processing machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the machine tool disclosed in the embodiment of the utility model;

[0022] Figure 2 A cross-sectional view of a machine tool disclosed in an embodiment of the utility model;

[0023] Figure 3 for Figure 2 A partial enlarged view of area A in FIG.

[0024] The above drawings include the following reference numerals:

[0025] 10. Base; 11. Drive shaft; 12. Groove; 13. Chip conveyor; 14. Protrusion; 15. First protective plate; 16. Second protective plate; 17. Workbench; 20. Protective assembly; 201. Bracket; 201a. First bracket; 201b. Second bracket; 202. Outer cover; 202a. First outer cover; 202b. Second outer cover; 21. First protective cover; 211. First part; 212. Second part; 22. Second protective cover; 23. First filter layer; 24. Second filter layer. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0029] As mentioned in the background technology, during the graphite processing, a large amount of graphite dust will be generated in the machine tool. If there are no effective protective measures, it will corrode the internal parts of the machine tool, especially the high-precision parts such as the lead screw, motor, and grating ruler of the drive shaft. At present, the protective measures adopted in the graphite processing process include a labyrinth protection design method plus a positive pressure airflow and a positive pressure airflow directly protecting. However, under the strict protection adopted above, graphite dust can also easily enter the interior of the protective device, which will damage the processing machine tool drive shaft after a long time, seriously affecting the processing accuracy of the processing machine tool. For this reason, the utility model provides a machine tool, which can effectively adsorb and intercept graphite dust during the processing process, can effectively prevent dust from entering the machine tool and the drive shaft, and effectively protect the drive shaft, thereby improving the processing accuracy of the processing machine tool.

[0030] See also Figures 1 to 3 As shown, according to an embodiment of the present application, a machine tool is provided. The machine tool includes a base 10 and a protection assembly 20 .

[0031] In this embodiment, a driving shaft 11 is arranged on the base 10; the protective assembly 20 includes a first protective cover 21 and a second protective cover 22, the first protective cover 21 is installed on the base 10 and covers the outside of the second protective cover 22, and a first filter layer 23 is arranged in the gap between the first protective cover 21 and the base 10, the second protective cover 22 is installed on the base 10 and covers the outside of the driving shaft 11, and a second filter layer 24 is arranged in the gap between the second protective cover 22 and the base 10.

[0032] In the present application, by setting a first protective cover 21 and a second protective cover 22 outside the drive shaft 11, double-layer protection can ensure the cleanliness of the interior of the machine tool, while protecting the drive shaft 11 and other related mechanical parts from damage. The second protective cover 22 is closely matched with the drive shaft 11 to prevent particles such as graphite dust from entering the bearings and other sensitive parts. The first protective cover 21 provides an additional protective layer connected to the machine tool to prevent the external environmental factors from affecting the interior of the machine tool. This double-layer protection can effectively protect the interior of the machine tool under different environments, especially under harsh environmental conditions such as high temperature, high humidity or dusty environments. The double-layer protection can greatly reduce maintenance costs and extend the service life of the machine tool. At the same time, a first filter layer 23 is provided in the gap between the first protective cover 21 and the base 10, which can effectively prevent graphite dust from entering the cavity of the processing machine tool; a second filter layer 24 is provided in the gap between the second protective cover 22 and the base 10, which can greatly reduce the graphite dust from entering the interior of the drive shaft 11. Such an arrangement can reduce the damage of graphite processing dust to the drive shaft 11 and improve the processing accuracy of the graphite processing machine tool.

[0033] That is, the first protective cover 21 is arranged outside the second protective cover 22, and the second protective cover 22 is arranged outside the drive shaft 11. In this way, a closed pressure environment is formed between the double-layer protective covers, which reduces the damage of graphite dust to the drive shaft 11 during the machining movement of the machine tool; and a filter layer is arranged in the gap between the protective cover and the base 10, which not only further reduces the dust from entering the cavity of the machine tool, but also greatly reduces the dust from entering the interior of the drive shaft 11, thereby improving the machining accuracy of the graphite machining machine tool.

[0034] In the present application, the first filter layer 23 and the second filter layer 24 can both be set as an electrostatic cotton layer, or both can be set as an activated carbon layer, or one can be set as an electrostatic cotton layer and the other can be set as an activated carbon layer. In the present embodiment, it is preferred that the first filter layer 23 and the second filter layer 24 are electrostatic cotton layers. Electrostatic cotton is a special filter material. Through electrostatic treatment, its surface is charged with static electricity, so that it can attract and adsorb particles such as dust, pollen, bacteria, and viruses in the air. The filtration efficiency of electrostatic cotton is very high, and it can effectively filter up to 99% of pollen particles, and capture particles equivalent to one-quarter the diameter of a hair. Specifically, electrostatic cotton can filter dust particles with a diameter of about 0.3μm, while the particle diameter of graphite dust is usually 0.1μm-1μm, so it can effectively filter graphite dust. Secondly, electrostatic cotton is a material with good air permeability, which can ensure that the first protective cover 21 and the second protective cover 22 maintain good gas capacity during compression and stretching. In addition, electrostatic cotton has a high dust holding capacity. During the graphite processing, it can filter stably for a longer time, reducing the frequency of cleaning and replacement, thereby saving time and cost. The use of electrostatic cotton layer can effectively absorb, retain and filter the graphite dust generated by the graphite processing machine tool, reducing the dust from entering the machine tool.

[0035] In this embodiment, if Figure 2 As shown, the base 10 is provided with grooves 12 at positions on both sides of the drive shaft 11, and the machine tool also includes a chip conveyor 13, which is at least partially embedded in the groove 12. During the processing of the graphite machine tool, the waste generated is discharged to the outside of the machine tool through the chip conveyor 13 to ensure the cleanliness of the inside of the machine tool. In this embodiment, the bottom end of the first protective cover 21 extends to the inside of the chip conveyor 13, and a first filter layer 23 is provided between the bottom end of the first protective cover 21 and the inner wall surface of the chip conveyor 13. In the actual working process, the first protective cover 21 and the second protective cover 22 generate inward pressure when they are stretched, and the graphite dust is sucked inward at this time, and the floating graphite dust will enter the space between the first protective cover 21 and the chip conveyor 13 into the first protective cover 21 and the second protective cover 22. The first filter layer 23 is provided on the chip conveyor 13 to adsorb and retain a part of the dust, reduce the dust entering the first protective cover 21, and thus also reduce the dust entering the drive shaft 11 in the second protective cover 22.

[0036] Furthermore, the first filter layer 23 is bonded to the inner wall surface of the chip conveyor 13 by a glue layer (not shown in the figure), so that the electrostatic cotton layer can effectively adhere to the inner wall surface of the chip conveyor 13, is not easy to fall off, and does not affect the normal use of the machine tool. In addition, the electrostatic cotton layer can increase the adsorption and retention of graphite processing dust during operation, and reduce the dust from entering the cavity of the machine tool. It is worth noting that when bonding through the glue layer, pay attention to the ventilation problem to prevent the glue layer from blocking the pores on the electrostatic cotton layer, which will cause adverse effects on the first protective cover 21 and the second protective cover 22 during actual operation.

[0037] See again Figure 2 As shown, the base 10 is provided with protrusions 14 at positions on opposite sides of the drive shaft 11. On the same side of the drive shaft 11, the protrusion 14 is closer to the drive shaft 11 than the groove 12. In this embodiment, the bottom end of the second protective cover 22 extends to the side of the protrusion 14 close to the groove 12. This arrangement can better protect the drive shaft 11 and prevent fine dust from entering the interior of the drive shaft 11. In addition, a second filter layer 24 is provided between the second protective cover 22 and the outer wall surface of the protrusion 14; when the first protective cover 21 and the second protective cover 22 are actually working, the dust that still enters the cavity under strict protection can be better effectively adsorbed and intercepted to prevent fine dust from entering the interior of the drive shaft 11; thereby ensuring the normal operation of the drive shaft 11 to a certain extent and improving the accuracy of machine tool processing.

[0038] Furthermore, the second filter layer 24 is bonded to the outer wall of the protrusion 14 by an adhesive layer, which can ensure that the electrostatic cotton layer is not easy to fall off during the actual working process. In other words, it can absorb and trap dust without affecting the normal operation of the machine tool, reduce the graphite processing dust from entering the drive shaft 11, and damage the drive shaft 11, thereby improving the performance of the machine tool.

[0039] like Figure 1As shown, the first protective plate 15 and the second protective plate 16 are respectively provided at both ends of the drive shaft 11. Such a configuration can prevent the internal structure of the machine tool from being exposed, thereby improving the aesthetics of the machine tool. A workbench 17 is also provided on the machine tool, and the workbench 17 is slidably provided on the drive shaft 11, which is beneficial to the operation of the graphite processing machine tool. The first protective cover 21 includes a first part 211 and a second part 212. Along the axial direction of the drive shaft 11, the first part 211 and the second part 212 are respectively provided on both sides of the workbench 17, so that the two parts can reduce the impact of the external environment on the inside of the machine tool. Specifically, one end of the first part 211 is sealed and connected to the first protective plate 15, which can reduce the impact of the external environment on the inside of the machine tool; the other end of the first part 211 is connected to the workbench 17, which can better protect the machine tool and the drive shaft 11. One end of the second part 212 is sealedly connected to the second protective plate 16, which can reduce the dust in the external environment from entering the cavity inside the machine tool; and the other end of the second part 212 is connected to the workbench 17, and the two ends cover the drive shaft 11 on the machine tool, which can enhance the protection of the drive shaft 11. Connecting with the protective plate on the machine tool can reduce the occupation of other space on the machine tool, and can cover the machine tool to the maximum extent to play a protective role.

[0040] Furthermore, the second protective cover 22 also includes two parts, namely a third part (not shown in the figure) and a fourth part (not shown in the figure). Along the axial direction of the drive shaft 11, the third part and the fourth part are respectively arranged on both sides of the workbench 17. The second protective cover 22 with two parts can most effectively protect the drive shaft 11, reduce the entry of fine dust into the interior of the drive shaft 11, and reduce the impact on the drive shaft 11. Specifically, the ends of the third part and the fourth part facing away from the workbench 17 are respectively connected to the base 10, and the ends of the third part and the fourth part close to the workbench 17 are respectively connected to the workbench 17. The second protective cover 22 is arranged on the outside of the drive shaft 11 and connected to the workbench 17. During the processing of the graphite machine tool, the two parts of the second protective cover 22 can effectively protect the drive shaft 11.

[0041] See also Figures 1 to 3As shown, the first protective cover 21 and the second protective cover 22 both include a bracket 201 and an outer cover 202, and the first protective cover 21 includes a first bracket 201a and a first outer cover 202a. The bracket 201 can effectively support the outer cover 202, and in actual production, ensure that the protective cover works normally on the machine tool and the drive shaft 11. The second protective cover 22 includes a second bracket 201b and a second outer cover 202b. In this way, the second bracket 201b can support the second outer cover 202b, which can ensure that when the graphite processing machine tool is running, the second protective cover 22 can effectively protect the drive shaft 11 and reduce the impact of dust on the drive shaft 11. In this embodiment, the first protective cover 21 and the second protective cover 22 are retractable, so the bracket 201 can also be retracted along the axial direction of the drive shaft 11. The outer cover 202 is fixedly connected to the bracket 201 by screws or bolts. In this embodiment, it is preferred to set the connection mode to a bolted fixed connection, which is conducive to easier replacement when the bracket 201 or the outer cover 202 is damaged.

[0042] Furthermore, the outer cover 202 may be an accordion-type protective cover or a retractable steel plate protective cover. In this embodiment, it is preferred that the outer cover 202 is set as an accordion-type protective cover, because the accordion is light in weight and has little impact on the machine tool and the guide rails and drive shaft 11 on the machine tool. In addition, the accordion-type protective cover has a wide range of applications, and there are no metal parts in the protective cover, so there is no need to worry about the protective cover causing serious damage to the machine tool due to loose parts during operation.

[0043] According to the above embodiments, the machine tool of the present application can at least achieve the following effects:

[0044] (1) The present application forms a double-layer protection system by arranging a first protective cover and a second protective cover outside the drive shaft, which can ensure the cleanliness of the interior of the machine tool while protecting the drive shaft and related mechanical parts from damage, thereby reducing maintenance costs and extending the service life of the machine tool to a certain extent;

[0045] (2) The present application can effectively prevent graphite dust from entering the cavity of the machine tool by setting a first filter layer between the first protective cover and the chip conveyor; and can more effectively reduce the graphite dust from entering the drive shaft by setting a second filter layer between the second protective cover and the base, thereby improving the machining accuracy of the machine tool.

[0046] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0047] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. If not otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A machine tool, characterized in that: include: A base (10), wherein a driving shaft (11) is arranged on the base (10); A protection component (20), the protection component (20) comprising a first protection cover (21) and a second protection cover (22), the first protection cover (21) being mounted on the base (10) and covering the outside of the second protection cover (22), and a first filter layer (23) being arranged in a gap between the first protection cover (21) and the base (10), the second protection cover (22) being mounted on the base (10) and covering the outside of the drive shaft (11), and a second filter layer (24) being arranged in a gap between the second protection cover (22) and the base (10).

2. The machine tool according to claim 1, characterized in that: The first filter layer (23) and the second filter layer (24) both include at least one of an electrostatic cotton layer and an activated carbon layer.

3. The machine tool according to claim 1, characterized in that: The base (10) is provided with grooves (12) at positions on opposite sides of the drive shaft (11); the machine tool further comprises a chip conveyor (13); the chip conveyor (13) is at least partially embedded in the groove (12); the bottom end of the first protective cover (21) extends into the interior of the chip conveyor (13); and the first filter layer (23) is provided between the bottom end of the first protective cover (21) and the inner wall surface of the chip conveyor (13).

4. The machine tool according to claim 3, characterized in that: The first filter layer (23) is bonded to the inner wall surface of the chip conveyor (13) via a glue layer.

5. The machine tool according to claim 3, characterized in that: The base (10) is provided with protrusions (14) at positions on opposite sides of the drive shaft (11); on the same side of the drive shaft (11), the protrusion (14) is closer to the drive shaft (11) than the groove (12); the bottom end of the second protective cover (22) extends to the side of the protrusion (14) close to the groove (12); and the second filter layer (24) is provided between the second protective cover (22) and the outer wall surface of the protrusion (14).

6. The machine tool according to claim 5, characterized in that: The second filter layer (24) is bonded to the outer wall surface of the protrusion (14) via an adhesive layer.

7. The machine tool according to claim 1, characterized in that: A first protective plate (15) and a second protective plate (16) are respectively arranged at both ends of the driving shaft (11); the machine tool further comprises a workbench (17); the workbench (17) is slidably arranged on the driving shaft (11); the first protective cover (21) comprises a first part (211) and a second part (212); along the axial direction of the driving shaft (11), the first part (211) and the second part (212) are respectively arranged on both sides of the workbench (17); One end of the first part (211) is sealed and connected to the first protective plate (15), and the other end of the first part (211) is connected to the workbench (17); one end of the second part (212) is sealed and connected to the second protective plate (16), and the other end of the second part (212) is connected to the workbench (17).

8. The machine tool according to claim 7, characterized in that: The second protective cover (22) comprises a third part and a fourth part, wherein the third part and the fourth part are respectively arranged on two sides of the workbench (17); The ends of the third part and the fourth part facing away from the workbench (17) are respectively connected to the base (10), and the ends of the third part and the fourth part close to the workbench (17) are respectively connected to the workbench (17).

9. The machine tool according to any one of claims 1 to 8, characterized in that The first protective cover (21) and the second protective cover (22) both comprise a bracket (201) and an outer cover (202); the bracket (201) is retractable along the axial direction of the drive shaft (11); and the outer cover (202) is fixedly connected to the bracket (201) by screws or bolts.

10. The machine tool according to claim 9, characterized in that The outer cover (202) includes at least one of an accordion protective cover and a retractable steel plate protective cover.

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