Machine head protection device, machine head and machine tool

Abstract

The utility model relates to the technical field of machine tools, and provides a machine head protection device, a machine head and a machine tool, the machine head protection device is arranged on a machine head body, the machine head body comprises a connecting plate and a sliding plate, the machine head protection device comprises a roller shutter mechanism and a supporting mechanism, and the roller shutter mechanism is arranged on the side, close to the connecting plate, of the sliding plate; the roller shutter mechanism comprises a winding drum assembly and curtain cloth, the first end of the curtain cloth is connected with the winding drum assembly, the winding drum assembly automatically winds or releases the curtain cloth, the second end of the curtain cloth is connected with the sliding plate, and the axis of the winding drum assembly is transversely arranged; the supporting mechanism is arranged on the side, close to the connecting plate, of the sliding plate and connected with the connecting plate, and the winding drum assembly is arranged on the supporting mechanism. Due to the arrangement, the curtain cloth of the curtain rolling mechanism is used for protection, the thickness of the curtain cloth is very small, the curtain cloth is flexible, the position of the winding drum assembly is convenient to arrange, the occupied longitudinal space is reduced, the length of a cantilever at the installation position of a cutter and the machine head body is effectively reduced, and the stability and the machining precision of a machine tool are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tools, in particular to a head protection device, a head and a machine tool. Background Art

[0002] A machine tool is a mechanical device that drives a tool to perform machining operations such as cutting and forming through a motor, such as metal cutting machine tools like lathes, milling machines, and drilling machines. The tool is generally installed on the head of the machine tool, and the head of the machine tool can slide vertically relative to the installation position of the head to realize the lifting of the tool. To improve the service life of the head and ensure the safety during the machining process of the machine tool, more and more machine tools will protect the lifting mechanism of the head to avoid the influence of chips and cutting fluid on the lifting mechanism of the head.

[0003] In the traditional technology, when protecting the lifting mechanism of the head, an armor or a flexible protective cover is mainly arranged outside the lifting mechanism of the head. The thickness dimension of the armor or the flexible protective cover itself is relatively large, which will increase the cantilever length of the tool relative to the installation position of the head. The increase in the cantilever length of the tool relative to the installation position of the machine tool will affect the stability of the tool, thereby affecting the machining accuracy and the safety of the head structure. Especially for a swing head machine tool, the tool is arranged on the swing head machine tool, and the swing axis of the swing head structure is inclined. The tool is originally in a cantilever state, and the setting of the armor protective cover will further increase the cantilever length of the tool relative to the installation position of the machine tool. Using the armor protective cover to protect the lifting mechanism of the head of the swing head machine tool will seriously affect the stability and machining accuracy of the swing head machine tool.

[0004] Therefore, how to solve the problem in the prior art that the cantilever of the tool on the spindle is too long relative to the installation position of the head body due to the setting of the protection device on the head, thereby affecting the stability and machining accuracy of the machine tool, has become an important technical problem to be solved by those skilled in the art. Summary of the Utility Model

[0005] The utility model provides a head protection device, a head and a machine tool, so as to solve the defect in the prior art that the cantilever of the tool on the spindle is too long relative to the installation position of the head body due to the setting of the protection device on the head, thereby affecting the stability and machining accuracy of the machine tool.

[0006] The utility model provides a head protection device, which is arranged on a head body. The head body includes a connecting plate and a sliding plate. The sliding plate and the connecting plate are distributed longitudinally, and the sliding plate is arranged on the connecting plate so as to be capable of sliding reciprocally in the vertical direction. The head protection device includes:

[0007] A rolling curtain mechanism is arranged on one side of the sliding plate close to the connecting plate. The rolling curtain mechanism includes a drum assembly and a curtain. The first end of the curtain is connected to the drum assembly, the second end of the curtain is fixedly connected to the sliding plate, the drum assembly is adapted to automatically roll up or release the curtain, and the axis of the drum assembly is arranged horizontally.

[0008] A support mechanism is arranged on one side of the sliding plate close to the connecting plate. The support mechanism is fixedly connected to the connecting plate, and the drum assembly is arranged on the support mechanism.

[0009] According to a nose protection device provided by the present invention, the support mechanism includes:

[0010] A pair of support frames are distributed horizontally on both sides of the nose body. The support frames are fixedly connected to the connecting plate, and the drum assembly is arranged between the pair of support frames.

[0011] According to a nose protection device provided by the present invention, the support frame has a vertically extending portion. The vertically extending portion is provided with a limiting groove extending vertically. The limiting groove is arranged on one side of the pair of support frames facing each other. The edge of the curtain is located in the limiting groove, and the curtain can slide vertically relative to the limiting groove.

[0012] According to a nose protection device provided by the present invention, it further includes:

[0013] A guide cylinder mechanism is arranged between the drum assembly and the second end of the curtain. The guide cylinder mechanism is located on the side of the drum assembly away from the connecting plate. The guide cylinder mechanism is adapted to change the extending direction of the curtain, and the part of the curtain located on the side of the guide cylinder mechanism away from the rolling curtain mechanism is perpendicular to the longitudinal direction.

[0014] According to a nose protection device provided by the present invention, the guide cylinder mechanism includes:

[0015] There are a pair of support plates, and the pair of support plates are distributed horizontally. The support plates are fixedly connected to the support mechanism;

[0016] A guide cylinder body is arranged between the pair of support plates. The guide cylinder body is rotatably connected to the support plates, and the rotation axis of the guide cylinder body relative to the support plates is arranged horizontally.

[0017] According to a nose protection device provided by the present invention, both ends of the guide cylinder body are connected to the support plates through bearing assemblies.

[0018] According to a head protection device provided by the present utility model, the bearing assembly includes at least two bearings, and each of the bearings is distributed transversely, and the axes of each of the bearings coincide.

[0019] A head protection device provided by the present utility model further includes:

[0020] A protective cover, which is sleeved outside the reel assembly and the guide cylinder mechanism, and the protective cover is fixedly connected to the support mechanism.

[0021] The present utility model further provides a head, which includes a head body and a head protection device, the head protection device is arranged on the head body, and the head protection device is the above-mentioned head protection device.

[0022] The present utility model further provides a machine tool, which includes the above-mentioned head protection device, or includes the above-mentioned head.

[0023] The head protection device provided by the present utility model is arranged on the head body and is used to protect the lifting mechanism of the head body. The head body includes a connecting plate and a sliding plate, the sliding plate and the connecting plate are distributed longitudinally, the sliding plate is arranged on the connecting plate so as to be reciprocally slidable in the vertical direction, and a tool is installed on the sliding plate. When the sliding plate slides relative to the connecting plate, the lifting of the tool can be realized. The head protection device includes a rolling curtain mechanism and a support mechanism, and the rolling curtain mechanism is arranged on the side of the sliding plate close to the connecting plate. The rolling curtain mechanism includes a reel assembly and a curtain cloth, the first end of the curtain cloth is connected to the reel assembly, the second end of the curtain cloth is fixedly connected to the sliding plate, the reel assembly can automatically roll up or release the curtain cloth, the axis of the reel assembly is arranged transversely, and the reel automatically rolls up or releases the curtain cloth, so that the length between the second end of the curtain cloth and the reel assembly can adapt to the sliding position of the sliding plate. The support mechanism is arranged on the side of the sliding plate close to the connecting plate, the support mechanism is fixedly connected to the connecting plate, and the reel assembly is arranged on the support mechanism for supporting the reel assembly. With such an arrangement, the part of the head body on the side of the sliding plate close to the connecting plate and the processing area of the head body are isolated by the curtain cloth of the rolling curtain mechanism, realizing the protection of the part structure of the head body on the side of the sliding plate close to the connecting plate. The thickness dimension of the curtain cloth is very small, reducing the occupation of the longitudinal space, and the curtain cloth is flexible, which is convenient for arranging the position of the reel assembly, and the arrangement of the reel assembly will not affect the original sliding connection structure between the sliding plate and the connecting plate. The overall head protection device provided by the present utility model has little influence on the longitudinal dimension of the head body and can be basically ignored. Therefore, the distance between the tool on the main shaft and the installation position of the head body is greatly reduced, making the structure of the machine tool more compact and stable, with higher processing accuracy, and effectively solving the problem in the prior art that the cantilever of the tool on the main shaft from the installation position of the head body is too long due to the installation of the protection device on the head, thus affecting the stability and processing accuracy of the machine tool.

[0024] Furthermore, in the head provided by the present utility model, due to the presence of the head protection device as described above, it also has various advantages as described above.

[0025] Furthermore, in the machine tool provided by the present utility model, due to the presence of the head protection device or the head as described above, it also has various advantages as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 is a schematic structural diagram of the head provided by the present utility model.

[0028] Figure 2 is a schematic structural diagram of the rolling curtain mechanism and the guide tube mechanism provided by the present utility model.

[0029] Figure 3 is a schematic internal structural diagram of the guide tube structure provided by the present utility model.

[0030] Reference numerals:

[0031] 1, connecting plate; 2, sliding plate; 3, curtain cloth; 4, support frame; 5, swing head structure; 6, support plate; 7, guide tube body; 8, bearing; 9, protective cover; 10, lifting mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions in the present utility model in conjunction with the drawings in the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model fall within the scope of protection of the present utility model.

[0033] The following will describe the head protection device of the present utility model in conjunction with Figures 1 to 3 as shown in the following description.

[0034] As Figures 1 to 3 shown, the head protection device provided by the embodiment of the present utility model is disposed on the head body and is used to protect the lifting mechanism of the head body.

[0035] The machine head body includes a connecting plate 1, a sliding plate 2, and a lifting mechanism 10. The sliding plate 2 and the connecting plate 1 are distributed longitudinally. The sliding plate 2 is arranged on the connecting plate 1 so as to be reciprocally slidable in the vertical direction. The lifting mechanism 10 can drive the sliding plate 2 to reciprocally slide relative to the connecting plate 1. The lifting mechanism 10 can be a lead screw nut transmission mechanism driven by a motor. A cutter is installed on the sliding plate 2. When the sliding plate 2 slides relative to the connecting plate 1, the lifting of the cutter can be realized.

[0036] For a swing head machine tool, the swing head structure 5 is arranged at the lower end of the sliding plate 2, as Figure 1 shown.

[0037] For the convenience of description, the distribution direction of the sliding plate 2 and the connecting plate 1 is defined as the longitudinal direction, which is arranged horizontally. The longitudinal direction refers to the direction indicated by y in Figure 1 ; the transverse direction is arranged horizontally and is perpendicular to the longitudinal direction. The transverse direction refers to the direction indicated by x in Figure 1 ; the vertical direction is perpendicular to the transverse direction and the longitudinal direction. The vertical direction refers to the direction indicated by in Figure 1 .

[0038] The machine head protection device provided by the embodiment of the present utility model includes a rolling curtain mechanism and a support mechanism.

[0039] Specifically, the rolling curtain mechanism is arranged on the side of the sliding plate 2 close to the connecting plate 1. The rolling curtain mechanism includes a reel assembly and a curtain cloth 3. The first end of the curtain cloth 3 is connected to the reel assembly, and the second end of the curtain cloth 3 is fixedly connected to the sliding plate 2. Specifically, the second end of the curtain cloth 3 can be fixedly connected to the lower end of the sliding plate 2. The axis of the reel assembly is arranged transversely, and the reel assembly is located below the connecting plate 1. The reel assembly can automatically wind up or release the curtain cloth 3. The automatic winding up or releasing of the curtain cloth 3 by the reel assembly can make the length between the second end of the curtain cloth 3 and the reel assembly adapt to the sliding position of the sliding plate 2.

[0040] The support mechanism is arranged on the side of the sliding plate 2 close to the connecting plate 1. The support mechanism is fixedly connected to the connecting plate 1. The reel assembly is arranged on the support mechanism for supporting the reel assembly.

[0041] When the cutter needs to rise, it is necessary to control the lifting mechanism 10 to drive the sliding plate 2 to slide upward relative to the connecting plate 1. At this time, the sliding plate 2 generates an upward pulling force on the second end of the curtain cloth 3. Under the action of this pulling force, the reel assembly automatically releases the curtain cloth 3, allowing the second end of the curtain cloth 3 to slide upward with the sliding plate 2. The part of the curtain cloth 3 that is not wound around the reel assembly is located below the sliding plate 2, and can protect the structure located below the sliding plate 2.

[0042] When the tool needs to descend, it is necessary to control the lifting mechanism 10 to drive the sliding plate 2 to slide downward relative to the connecting plate 1. At this time, the upward pulling force of the sliding plate 2 on the curtain cloth 3 disappears, and the reel assembly can automatically reel in the curtain cloth 3 to store the curtain cloth 3, ensuring that the part of the curtain cloth 3 that is not wound around the reel assembly remains flat, avoiding the influence on the head body and the tool. The part of the curtain cloth 3 that is not wound around the reel assembly is located below the sliding plate 2, which can protect the structure located below the sliding plate 2.

[0043] With such a setting, the curtain cloth 3 of the rolling curtain mechanism isolates the part of the head body on the side of the sliding plate 2 close to the connecting plate 1 from the processing area of the head body, realizing the protection of the lifting mechanism 10 and other part structures of the head body on the side of the sliding plate 2 close to the connecting plate 1. The thickness dimension of the curtain cloth 3 is very small, reducing the occupation of the longitudinal space. Moreover, the curtain cloth 3 is flexible, which is convenient for arranging the position of the reel assembly, and the arrangement of the reel assembly will not affect the original sliding connection structure between the sliding plate 2 and the connecting plate 1. The overall head protection device provided by the present utility model has little influence on the longitudinal dimension of the head body, which can be basically ignored. Therefore, the distance between the tool on the main shaft and the installation position of the head body is greatly reduced, making the machine tool structure more compact and stable, and the machining accuracy higher, effectively solving the problem in the prior art that the cantilever of the tool on the main shaft from the installation position of the head body is too long due to the installation of the protection device on the head, thus affecting the stability and machining accuracy of the machine tool.

[0044] It should be noted that the reel assembly includes a support shaft, a reel body, and an elastic member. The support shaft is used for fixedly connecting with the support mechanism, the reel body is rotatably connected with the support shaft, and the elastic member is arranged between the reel body and the support shaft. The elastic member makes the reel body have a tendency to rotate in the direction of reeling in the curtain cloth 3. The elastic member can be, but is not limited to, a torsion spring.

[0045] In the embodiment of the present utility model, the support mechanism includes a support frame 4. There are a pair of support frames 4, and the pair of support frames 4 are distributed transversely on both sides of the head body. The support frame 4 is fixedly connected with the connecting plate 1, and the reel assembly is arranged between the pair of support frames 4.

[0046] In this embodiment, the support frame 4 has a vertically extending portion, and a limiting groove is provided on the vertically extending portion. The limiting groove extends vertically. The limiting grooves are arranged on the opposite sides of the pair of support frames 4, and the two laterally distributed edges of the curtain cloth 3 are located in the limiting grooves of the pair of support frames 4, and the curtain cloth 3 can slide vertically relative to the limiting grooves.

[0047] The setting of the limiting groove can guide the curtain cloth 3 during the process of sliding with the sliding plate 2, and can limit the position of the curtain cloth 3 in the transverse and longitudinal directions, ensuring the flatness of the part of the curtain cloth 3 that is not wound around the reel assembly, and improving the stability of the rolling curtain mechanism.

[0048] In the embodiment of the present utility model, the head protection device further includes a guide cylinder mechanism. The guide cylinder mechanism is arranged between the reel assembly and the second end of the curtain cloth 3, and the guide cylinder mechanism is located on the side of the reel assembly away from the connecting plate 1. The guide cylinder mechanism can change the extending direction of the curtain cloth 3. As Figure 2 shown, the part of the curtain cloth 3 on the side of the guide cylinder mechanism away from the rolling curtain mechanism is perpendicular to the longitudinal direction, ensuring the effective protection of the curtain cloth 3 for the head body.

[0049] In addition, after the guide cylinder mechanism changes the extending direction of the curtain cloth 3, the part of the curtain cloth 3 between the guide cylinder mechanism and the rolling curtain mechanism can be perpendicular to the vertical direction, and this part of the curtain cloth 3 is arranged in the horizontal direction. At this time, both the guide cylinder mechanism and the reel mechanism can be arranged below the connecting plate 1.

[0050] In this embodiment, the guide cylinder mechanism includes a support plate 6 and a guide cylinder body 7.

[0051] There are a pair of support plates 6. The pair of support plates 6 are distributed transversely. The support plate 6 is fixedly connected to the support mechanism and is used to support the guide cylinder body 7.

[0052] The guide cylinder body 7 is arranged between the pair of support plates 6. The guide cylinder body 7 is rotatably connected to the support plate 6. The rotation axis of the guide cylinder body 7 relative to the support plate 6 is arranged transversely. The rotation axis of the guide cylinder body 7 relative to the support plate 6 is parallel to the axis of the reel assembly.

[0053] With such an arrangement, when the reel assembly winds or releases the curtain cloth 3, the guide cylinder body 7 will rotate relative to the support plate 6, avoiding sliding friction between the guide cylinder body 7 and the curtain cloth 3, avoiding wear on the curtain cloth 3, and prolonging the service life of the rolling curtain mechanism.

[0054] In this embodiment, both ends of the guide cylinder body 7 are connected to the support plate 6 through bearing assemblies. Refer to Figure 3 . The bearing assembly includes at least two bearings 8. Each bearing 8 is distributed transversely, and the axes of the bearings 8 coincide. At least two bearings 8 are arranged at each end of the guide cylinder body 7, which can improve the stable support for the guide cylinder body 7 and improve the stability of the guide cylinder mechanism.

[0055] It should be noted that a baffle and a retaining ring are respectively arranged at the two transverse ends of each bearing assembly. The baffle and the retaining ring are both relatively fixed to the support plate 6. The retaining ring and the baffle can be used to limit the transverse position of the bearing assembly, avoid the axial movement of the bearing, and ensure the stability and reliability of the bearing assembly.

[0056] In the embodiment of the present utility model, the head protection device further includes a protective cover 9. The protective cover 9 covers the outside of the reel assembly and the guide cylinder mechanism. The protective cover 9 is fixedly connected to the support mechanism.

[0057] The protective cover 9 can be used to protect the guide cylinder mechanism and the reel assembly, reducing damage to the guide cylinder mechanism and the reel assembly caused by chips, cutting fluid, etc., which is beneficial to extending the service life of the head protection device.

[0058] On the other hand, an embodiment of the present invention further provides a head, which includes a head body and the head protection device provided in any of the above embodiments. The head protection device is arranged on the head body. The head protection device provided in the above embodiments can not only protect the head body, but also does not affect the cantilever length of the tool relative to the installation position on the head. Therefore, the head provided in this embodiment has a long service life, excellent stability and machining accuracy. The derivation process of the beneficial effects of the head in the embodiment of the present invention is generally similar to the derivation process of the beneficial effects of the above head protection device, so it will not be elaborated here.

[0059] On yet another aspect, an embodiment of the present invention further provides a machine tool, which includes the head protection device or the head provided in any of the above embodiments. It has all the advantages of the above head protection device or head, which will not be elaborated here. The derivation process of the beneficial effects of the machine tool in the embodiment of the present invention is generally similar to the derivation process of the beneficial effects of the above head protection device or head, so it will not be elaborated here.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A head protection device, characterized in that: The machine head protection device is arranged on a machine head body, the machine head body comprises a connecting plate (1) and a sliding plate (2), the sliding plate (2) and the connecting plate (1) are distributed in the longitudinal direction, and the sliding plate (2) can be arranged on the connecting plate (1) in a reciprocating manner in the vertical direction. The machine head protection device comprises: A rolling curtain mechanism is arranged on a side of the sliding plate (2) close to the connecting plate (1), the rolling curtain mechanism comprising a roller assembly and a curtain cloth (3), the first end of the curtain cloth (3) being connected to the roller assembly, the second end of the curtain cloth (3) being fixedly connected to the sliding plate (2), the roller assembly being suitable for automatically rolling up or releasing the curtain cloth (3), and the axis of the roller assembly being arranged in a transverse direction; A support mechanism is arranged on a side of the sliding plate (2) close to the connecting plate (1), the support mechanism is fixedly connected to the connecting plate (1), and the reel assembly is arranged on the support mechanism.

2. The head protection device according to claim 1, characterized in that: The supporting mechanism comprises: A pair of support frames (4), the pair of support frames (4) being distributed on both sides of the machine head body in the transverse direction, the support frames (4) being fixedly connected to the connecting plate (1), and the reel assembly being arranged between the pair of support frames (4).

3. The head protection device according to claim 2, characterized in that: The support frame (4) has a vertical extension portion, the vertical extension portion is provided with a limit groove extending in the vertical direction, the limit groove is provided on one side of a pair of support frames (4) facing each other, the edge of the curtain (3) is located in the limit groove, and the curtain (3) can slide vertically relative to the limit groove.

4. The head protection device according to claim 1, characterized in that: Also includes: A guide drum mechanism is arranged between the winding drum assembly and the second end of the curtain (3), the guide drum mechanism is located on a side of the winding drum assembly away from the connecting plate (1), the guide drum mechanism is suitable for changing the extension direction of the curtain (3), and a portion of the curtain (3) located on a side of the guide drum mechanism away from the rolling curtain mechanism is perpendicular to the longitudinal direction.

5. The head protection device according to claim 4, characterized in that: The guide cylinder mechanism comprises: A pair of support plates (6) is provided, wherein the pair of support plates (6) are distributed in a transverse direction, and the support plates (6) are fixedly connected to the support mechanism; The guide tube body (7) is arranged between the pair of support plates (6), the guide tube body (7) is rotatably connected to the support plates (6), and the guide tube body (7) is arranged transversely relative to the rotation axis of the support plates (6).

6. The head protection device according to claim 5, characterized in that: Both ends of the guide cylinder body (7) are connected to the support plate (6) via bearing assemblies.

7. The head protection device according to claim 6, characterized in that: The bearing assembly comprises at least two bearings (8), each of the bearings (8) is distributed in a transverse direction, and the axes of each of the bearings (8) coincide with each other.

8. The head protection device according to any one of claims 4 to 7, characterized in that: Also includes: A protective cover (9) is arranged outside the reel assembly and the guide drum mechanism, and the protective cover (9) is fixedly connected to the support mechanism.

9. A machine head, characterized in that: The invention comprises a machine head body and a machine head protection device, wherein the machine head protection device is arranged on the machine head body, and the machine head protection device is the machine head protection device as claimed in any one of claims 1 to 8.

10. A machine tool, characterized in that: It comprises the nose protection device as described in any one of claims 1 to 8, or it comprises the nose as described in claim 9.

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