Protective device for numerical control machine tools

Abstract

The present invention relates to a protective device for a numerically controlled machine tool, comprising: two telescopic protective covers, an outer protective component and an inner protective component arranged on both sides of the workbench. The telescopic protective covers are arranged along the Y-axis direction and include a first mounting portion and a second mounting portion. The first mounting portions of the two telescopic protective covers are respectively fixedly connected to both ends of the workbench. The outer protective component is fixedly connected to the second mounting portions of the two telescopic protective covers along the Y-axis direction and is fixedly connected to the workbench along the Z-axis direction, and moves along with the movement of the workbench. The inner protective component is arranged at the corresponding position inside the outer protective component along the Y-axis direction, is fixedly installed on the base, and both ends of the inner protective component respectively extend to the moving portions of the two telescopic protective covers. The inner protective component, the outer protective component and the telescopic protective covers form a relatively sealed space, which can effectively isolate impurities from entering the driving components inside the machine tool from the top, side and bottom, so that the precision driving components inside the machine tool are not eroded.

Description

Technical Field

[0001] The present invention relates to the technical field of machining equipment, and particularly to a protection device for a numerical control machine tool. Background Art

[0002] The internal protection of a machine tool is very important for the machine tool. It can protect the precision drive components inside the machine tool (such as the Y-axis drive device) from being damaged and eroded by external iron chips, sundries, and chemical liquids, thereby maintaining the accuracy of the machine tool and extending the service life of the machine tool. In the prior art, for the internal protection of a machine tool, the protection measures are not in place, and the gaps at the joints of the protection structure are relatively large, which easily leads to impurities such as iron chips, oil vapor, and water vapor entering the internal structure of the machine tool, thereby corroding the precision drive components inside the machine tool and affecting the machining accuracy and service life of the machine tool. Summary of the Invention

[0003] Based on this, it is necessary to provide a protection device for a numerical control machine tool that can block impurities such as iron chips, oil vapor, and water vapor from entering the internal structure of the machine tool, protect the precision drive components inside the machine tool, and thus ensure the machining accuracy and service life of the machine tool.

[0004] A protection device for a numerical control machine tool, the numerical control machine tool includes a base, a workbench, and a Y-axis drive device disposed on the base. The protection device includes: two telescopic protective covers, two groups of outer protection components respectively disposed on both sides of the workbench, and two groups of inner protection components respectively disposed on both sides of the workbench;

[0005] The telescopic protective cover is disposed along the Y-axis direction and includes a fixed part and a movable part. The fixed part is installed on the base, and the movable part includes a first installation part and a second installation part;

[0006] The first installation parts of the two telescopic protective covers are respectively fixedly connected to both ends of the workbench and move with the workbench;

[0007] The outer protection components are respectively fixedly connected to the second installation parts of the two telescopic protective covers along the Y-axis direction and are fixedly connected to the workbench along the Z-axis direction and move with the workbench;

[0008] The inner protection components are disposed at corresponding positions inside the outer protection components along the Y-axis direction, are installed on the base, and both ends of the inner protection components respectively extend to the movable part, and are used to cooperate with the outer protection components to protect the Y-axis drive device from being eroded.

[0009] In one embodiment, the inner protection component includes a third installation part, a reference part, and a first diversion part;

[0010] The third installation part is installed on the top of the base,

[0011] The reference part is perpendicular to the third mounting part and is used as the X-direction reference when the third mounting part is installed.

[0012] The first diversion part is connected to the connection part of the third mounting part and the reference part and is used to divert external impurities and prevent external impurities from entering the Y-axis driving device.

[0013] In one embodiment, the first diversion part is a U-shaped groove and a first inclined plate.

[0014] The notch of the U-shaped groove faces away from the workbench.

[0015] The first inclined plate is connected to the lower side of the U-shaped groove and forms an acute angle with the reference part.

[0016] In one embodiment, the mounting part is a mounting plate and the reference part is a reference plate.

[0017] In one embodiment, the outer protection component includes a protection part, an extension part and a second diversion part.

[0018] The protection part is fixedly connected to the second mounting parts of the two telescopic protective covers along the Y-axis direction and is fixedly connected to the workbench along the Z-axis direction.

[0019] The extension part is fixedly connected to the lower side of the protection part and extends into the U-shaped groove.

[0020] The second diversion part is connected to the extension part and cooperates with the first inclined plate to divert external impurities.

[0021] In one embodiment, the extension part is an extension plate, the second diversion part includes a second inclined plate, the second inclined plate is connected to the extension plate, and the slope of the second inclined plate is the same as that of the first inclined plate.

[0022] In one embodiment, the second diversion part further includes a connecting plate with an L-shaped cross section. The horizontal part of the connecting plate is connected to the extension plate, and the vertical part of the connecting plate is connected to the second inclined plate.

[0023] In one embodiment, the protection device further includes a lower sealing plate, and the lower sealing plate is installed in the extending direction of the base and is located below the fixed part.

[0024] In one embodiment, the protection device further includes a sealing strip and an oil receiving groove. The sealing strip is arranged on the second mounting part, and the oil receiving groove is arranged below the sealing strip.

[0025] In one embodiment, the slopes of the second inclined plate and the first inclined plate are both 45°.

[0026] The above-mentioned protective device for a numerical control machine tool includes: two telescopic protective covers, two groups of outer protective components respectively arranged on both sides of the workbench, and two groups of inner protective components respectively arranged on both sides of the workbench. The telescopic protective covers are arranged along the Y-axis direction and include a first mounting portion and a second mounting portion. The first mounting portions of the two telescopic protective covers are respectively fixedly connected to both ends of the workbench and stretch or contract following the movement of the workbench. The outer protective components are respectively fixedly connected to the second mounting portions of the two telescopic protective covers along the Y-axis direction and are fixedly connected to the workbench along the Z-axis direction, and move following the movement of the workbench. The inner protective components are arranged at the corresponding positions inside the outer protective components along the Y-axis direction, fixedly installed on the base, and both ends of the inner protective components respectively extend to the moving parts of the two telescopic protective covers, so that the outer protective components and the telescopic protective covers can move following the workbench. The inner protective components and the outer protective components cooperate with each other. The inner protective components, the outer protective components and the telescopic protective covers form a relatively enclosed space, and the gaps at the joints are relatively small, which can effectively isolate impurities such as iron filings, oil vapor, and water vapor from entering the driving components inside the machine tool from the top, side, and bottom, realize dynamic protection for the precision driving components inside the machine tool, prevent the precision driving components inside the machine tool from being eroded, and thus ensure the machining accuracy and service life of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, for those of ordinary skill in the art, without creative efforts, other embodiments can also be obtained based on the structures shown in these drawings.

[0028] Figure 1 It is a front view of the protective device installed on the base in one embodiment, in which the rear cover of the telescopic protective cover is hidden;

[0029] Figure 2 is Figure 1 the enlarged partial view shown;

[0030] Figure 3 It is a schematic structural diagram of the protective device installed on the base in one embodiment, in which the right telescopic protective cover is not yet connected to the workbench and the outer protective component;

[0031] Figure 4 It is an exploded schematic diagram of the protective device in one embodiment;

[0032] Figure 5 is Figure 4 the schematic structural diagram when the inner protective component and the outer protective component cooperate with each other after hiding other components in;

[0033] Figure 6 It is a structural schematic diagram of a telescopic protective cover.

[0034] As shown in the figure, it includes: workbench 10, base 15, Y-axis drive device 17, telescopic protective cover 20, outer protective component 30, inner protective component 40, lower sealing plate 50, sealing strip 60, oil receiving groove 70, first installation part 21, second installation part 22, rear cover 25 of the telescopic protective cover, third installation part 41, reference part 42, first diversion part 43, U-shaped groove 431, first inclined plate 432, protective part 31, extension part 32, second inclined plate 33, connecting plate 34. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0036] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can also be an intermediate element. When an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or there can also be an intermediate element.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back...) in this embodiment are only used to explain the relative positional relationship and motion state between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0038] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] Please refer to Figure 1 , Figure 1Schematic diagram of the protective device installed on the base 15 in an embodiment, where the rear cover 25 of the telescopic protective cover 20 is hidden.

[0040] In this embodiment, the protective device is used for a numerically controlled machine tool. The numerically controlled machine tool includes a base 15, a workbench 10, and a Y-axis driving device 17 (including driving components such as a linear motor, a coil, and a guide rail pair) disposed on the base 15. The protective device includes: two telescopic protective covers 20, two sets of outer protective components 30 respectively disposed on both sides of the workbench 10, and two sets of inner protective components 40 respectively disposed on both sides of the workbench 10. The outer protective component 30 and the inner protective component 40 are used in cooperation, that is, there is a set of outer protective component 30 and a set of inner protective component 40 on each side of the workbench 10. The outer protective components 30 and the inner protective components 40 on both sides of the workbench 10 are symmetrically disposed with respect to the workbench 10. The workbench 10 is connected to the slider by screws and is driven by an internal driving device to slide on the guide rail. The workbench 10 of the machine tool is configured to be matched with the protective device in this embodiment. For example, if the machine tool has only one workbench 10, as Figure 1 described, only one set of protective device in the figure (including: two telescopic protective covers 20, two sets of outer protective components 30 respectively disposed on both sides of the workbench 10, and two sets of inner protective components 40 respectively disposed on both sides of the workbench 10) is required. According to actual needs, if the machine tool has multiple workbenches 10, multiple sets of protective devices are correspondingly provided.

[0041] The telescopic protective cover 20 is disposed along the Y-axis direction and includes a fixed part and a moving part. The fixed part is fixedly installed on the base 15. The moving part moves along with the movement of the workbench 10. The moving part includes a first mounting part 21 and a second mounting part 22. The upper surface of the telescopic protective cover 20 adopts a herringbone structure. The herringbone inclined surface can reduce the residence time of oil stains and chips, accelerate the sliding, and prevent accumulation on the upper surface of the telescopic protective cover 20.

[0042] The first mounting parts 21 of the two telescopic protective covers 20 are respectively fixedly connected to both ends of the workbench 10 and move along with the workbench 10, that is, the telescopic protective covers 20 on both sides of the workbench 10 will extend or contract along with the movement of the workbench 10.

[0043] The outer protective components 30 are respectively fixedly connected to the second mounting parts 22 of the two telescopic protective covers 20 along the Y-axis direction and are fixedly connected to the workbench 10 along the Z-axis direction and move along with the workbench 10.

[0044] The inner protection component 40 is fixedly installed on the base 15 along the Y-axis direction and is arranged at the corresponding position inside the outer protection component 30. The two ends of the inner protection component 40 respectively extend to the moving parts of the telescopic protective cover 20, so that in cooperation with the outer protection component 30, it effectively isolates impurities such as iron filings, oil vapor, and water vapor from entering the Y-axis drive device 17 inside the machine tool from the top, side, and bottom, protecting the Y-axis drive device 17 from erosion.

[0045] The above-mentioned protective device includes: two telescopic protective covers 20, two groups of outer protection components 30 respectively arranged on both sides of the workbench 10, and two groups of inner protection components 40 respectively arranged on both sides of the workbench 10. The telescopic protective cover 20 is arranged along the Y-axis direction and includes a first installation part 21 and a second installation part 22. The first installation parts 21 of the two telescopic protective covers 20 are respectively fixedly connected to both ends of the workbench 10 and extend or contract following the movement of the workbench 10. The outer protection components 30 are respectively fixedly connected to the second installation parts 22 of the two telescopic protective covers 20 along the Y-axis direction and are fixedly connected to the workbench 10 along the Z-axis direction and move following the movement of the workbench 10. The inner protection component 40 is arranged at the corresponding position inside the outer protection component 30 along the Y-axis direction, fixedly installed on the base 15, and the two ends of the inner protection component 40 respectively extend to the moving parts of the two telescopic protective covers 20, so that the outer protection component 30 and the telescopic protective cover 20 can move following the workbench 10. The inner protection component 40 and the outer protection component 30 cooperate with each other. The inner protection component 40, the outer protection component 30, the telescopic protective cover 20, and the base 15 form a relatively airtight space, and the gaps at the joints are relatively small, which can effectively isolate impurities such as iron filings, oil vapor, and water vapor from entering the drive components inside the machine tool from the top, side, and bottom, realizing dynamic protection for the precision drive components inside the machine tool, protecting the precision drive components inside the machine tool from erosion, and thus ensuring the machining accuracy and service life of the machine tool.

[0046] In one embodiment, both the first installation part 21 and the second installation part 22 are installation plates.

[0047] Please continue to refer to Figures 2 to 6 , Figure 3 which is a schematic structural diagram of the protective device installed on the base 15 in one embodiment, where the right telescopic protective cover 20 is not yet connected to the workbench 10 and the outer protection component 30.

[0048] In one embodiment, the inner protection component 40 includes a third installation part 41, a reference part 42, and a first diversion part 43. The third installation part 41 is installed on the top of the base 15 and is used to install the inner protection component 40 on the base 15.

[0049] The reference part 42 is perpendicular to the third mounting part 41 and is used as the X-direction reference when the third mounting part 41 is installed, facilitating positioning and installation. The first guiding part 43 is connected to the connection part of the third mounting part 41 and the reference part 42 and is used to guide external impurities (such as iron filings, oil vapor, water vapor, etc.) to prevent external impurities from entering the internal Y-axis driving device 17. The inner protection component 40 can be a whole or composed of multiple sections spliced together according to actual needs. For example, in the figure, the inner protection component 40 is composed of 2 sections.

[0050] In one embodiment, the mounting part is a mounting plate and the reference part 42 is a reference plate.

[0051] In one embodiment, the first guiding part 43 is composed of a U-shaped groove 431 and a first inclined plate 432. The notch of the U-shaped groove 431 faces away from the workbench 10, that is, faces outwards. The first inclined plate 432 is connected to the lower side of the U-shaped groove 431 and forms an acute angle with the reference part 42. The first inclined plate 432 can reduce the accumulation of cutting fluid and chip impurities at the gap of the telescopic protective cover 20. The U-shaped groove 431 further blocks impurities such as cutting fluid and fine chips that "climb" up from the inclined surface gap. Here, the inner protection component 40 can achieve double-layer protection. The bottom sides of both sides of the telescopic protective cover 20 also adopt an inclined surface structure. In order to better cooperate with the first inclined plate 432 of the inner protection component 40 to minimize the gap, the slope of the inclined surfaces at the bottom sides of both sides of the telescopic protective cover 20 is the same as that of the first inclined plate 432 of the inner protection component 40.

[0052] In one of the embodiments, the first inclined plate 432 is connected to the lower side of the U-shaped groove 431 and the acute angle formed with the reference part 42 is 45°.

[0053] Please combine Figure 4 and Figure 5, in one embodiment, the outer protection component 30 includes a protection part 31, an extension part 32 and a second diversion part. The protection part 31 is fixedly connected to the second mounting parts 22 of the two telescopic protective covers 20 along the Y-axis direction and is fixedly connected to the workbench 10 along the Z-axis direction. The extension part 32 is fixedly connected to the lower side of the protection part 31 and extends into the U-shaped groove 431 of the inner protection component 40 but does not contact the U-shaped groove 431. The second diversion part is connected to the extension part 32 and cooperates with the first inclined plate 432 for diverting external impurities. In order to better cooperate with the first inclined plate 432, the slopes of the parts where the second diversion part and the first inclined plate 432 cooperate are the same. By the extension part 32 extending into the U-shaped groove 431 of the inner protection component 40 but not contacting the U-shaped groove 431, and the second diversion part being connected to the extension part 32, such an outer protection component 30 and the inner protection component 40 can be clamped without an additional fastening structure (such as screws, etc.), making it very convenient to disassemble and assemble the outer protection component 30 and the inner protection component 40, easy to disassemble and assemble, and with low cost. The inner protection component 40 and the outer protection component 30 cooperate with each other. The inner protection component 40, the outer protection component 30, the telescopic protective cover 20 and the base 15 form a relatively enclosed space with relatively small gaps at the joints, which can effectively isolate impurities such as iron filings, oil vapor, and water vapor from entering the driving components inside the machine tool from the top, side, and bottom, dynamically protect the precision driving components inside the machine tool, prevent the precision driving components inside the machine tool from being eroded, and thus ensure the machining accuracy and service life of the machine tool.

[0054] In one embodiment, the extension part 32 is an extension plate, and the second diversion part includes a second inclined plate 33. The second inclined plate 33 is connected to the extension plate, and the slope of the second inclined plate 33 is the same as the slope of the first inclined plate 432.

[0055] In one embodiment, the second diversion part further includes a connecting plate 34 with an L-shaped cross-section. The horizontal part of the connecting plate 34 is connected to the extension plate, and the vertical part of the connecting plate 34 is connected to the second inclined plate 33, so that the slope of the second inclined plate 33 is more easily the same as the slope of the first inclined plate 432, and the first inclined plate 432 and the second inclined plate 33 are in close contact as much as possible.

[0056] In one embodiment, the protection device further includes a lower sealing plate 50. The lower sealing plate 50 is installed in the extending direction of the base 15 and is located below the fixed part of the telescopic protective cover 20. If the length of the base 15 is long enough, the lower sealing plate 50 can be omitted. If the length of the base 15 is not enough to cover the area where the telescopic protective cover 20 moves, the lower sealing plate 50 needs to be provided in the extending direction of the base 15 to make the inner protection component 40, the outer protection component 30, the telescopic protective cover 20 and the base 15 form a relatively enclosed space.

[0057] In one embodiment, the protective device further includes a sealing strip 60 and an oil receiving groove 70. The sealing strip 60 is disposed on the lower side of the second mounting portion 22 and can prevent oil stains, fine chips, etc. from penetrating into the joint surface. The oil receiving groove 70 is disposed on the lower side of the sealing strip 60 and can provide secondary protection against oil stains and fine chips, preventing oil stains or chips from directly falling inside due to damage to the sealing strip 60. In one embodiment, the oil receiving groove 70 is a U-shaped oil receiving groove.

[0058] On the other hand, the present invention also provides a numerical control machine tool, including: a base 15; a workbench 10; a Y-axis driving device 17 disposed on the base 15; and a protective device as in any one of the above embodiments. The protective device is used to protect the Y-axis driving device 17 from being eroded by impurities.

[0059] The above embodiments are only one embodiment of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A protective device for a numerically controlled machine tool, the numerically controlled machine tool comprising a base, a workbench, and a Y-axis driving device disposed on the base, characterized in that, The protection device includes: two telescopic protective covers, two sets of outer protection components respectively arranged on both sides of the workbench, and two sets of inner protection components respectively arranged on both sides of the workbench; The telescopic protective cover is arranged along the Y-axis direction and includes a fixed part and a moving part. The fixed part is installed on the base, and the moving part includes a first installation part and a second installation part; The first installation parts of the two telescopic protective covers are respectively fixedly connected to both ends of the workbench and move along with the workbench; The outer protection components are respectively fixedly connected to the second installation parts of the two telescopic protective covers along the Y-axis direction and are fixedly connected to the workbench along the Z-axis direction and move along with the workbench; The inner protection components are arranged at corresponding positions inside the outer protection components along the Y-axis direction, are installed on the base, and both ends of the inner protection components respectively extend to the moving part, and are used to cooperate with the outer protection components to protect the Y-axis driving device from erosion. The inner protection component includes a first inclined plate, and the outer protection component includes a second inclined plate. The inner protection component includes a first diversion part; the first diversion part is a U-shaped groove and a first inclined plate; the notch of the U-shaped groove faces away from the workbench; the first inclined plate is connected to the lower side of the U-shaped groove; The outer protection component includes an extension part and a second diversion part; the extension part extends into the interior of the U-shaped groove; the second diversion part includes a second inclined plate, and the second inclined plate is connected to the extension part, and the slope of the second inclined plate is the same as that of the first inclined plate; The first inclined plate is in close contact with the second inclined plate, and the inner protection component, the outer protection component and the telescopic protective cover form a relatively enclosed space.

2. The protective device for a numerically controlled machine tool according to claim 1, characterized in that, The inner protection component includes a third installation part and a reference part; The third installation part is installed on the top of the base, and the reference part is perpendicular to the third installation part and is used as an X-direction reference when the third installation part is installed; The first diversion part is connected to the connection part of the third installation part and the reference part and is used to divert external impurities and prevent external impurities from entering the Y-axis driving device.

3. The protective device for a numerically controlled machine tool according to claim 2, characterized in that, The first inclined plate forms an acute angle with the reference part.

4. The protective device for a numerically controlled machine tool according to claim 3, characterized in that, The installation part is an installation plate, and the reference part is a reference plate.

5. The protective device for a numerically controlled machine tool according to claim 3, characterized in that, The outer protection component includes a protection part; The protection part is respectively fixedly connected to the second installation parts of the two telescopic protective covers along the Y-axis direction and is fixedly connected to the workbench along the Z-axis direction; The extension part is fixedly connected to the lower side of the protection part; The second diversion part cooperates with the first inclined plate to divert external impurities.

6. The protective device for a numerically controlled machine tool according to claim 5, characterized in that, The extension part is an extension plate, and the second inclined plate is connected to the extension plate.

7. The protective device for a numerically controlled machine tool according to claim 6, characterized in that, The second diversion part further includes a connecting plate with an L-shaped cross section. The horizontal part of the connecting plate is connected to the extension plate, and the vertical part of the connecting plate is connected to the second inclined plate.

8. The protective device for a numerically controlled machine tool according to claim 1, characterized in that, The protection device further includes a lower sealing plate, and the lower sealing plate is installed in the extending direction of the base and is located below the fixed part.

9. The protective device for a numerically controlled machine tool according to claim 1, characterized in that, The protection device further includes a sealing strip and an oil receiving groove. The sealing strip is arranged on the second installation part, and the oil receiving groove is arranged below the sealing strip.

10. The protective device for a numerically controlled machine tool according to claim 6, characterized in that, The slopes of both the second inclined plate and the first inclined plate are 45°.

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