Machine tool protection structure and cow head type machine tool

Abstract

The invention provides a machine tool protection structure and an ox head type machine tool, the machine tool protection structure comprises a first transverse movement protection cover, a second transverse movement protection cover, a third transverse movement protection cover, a first guide rail support and at least two main shaft protection covers, the third transverse moving protective cover is located between every two adjacent main shaft protective covers, the two width sides of the third transverse moving protective cover are connected with the side edges, corresponding to the main shaft protective covers, of the main shaft protective covers, and the first transverse moving protective cover and the second transverse moving protective cover are connected with the side edges of the sides, away from the third transverse moving protective cover, of the main shaft protective covers correspondingly. The first transverse moving protective cover, the second transverse moving protective cover and the third transverse moving protective cover are all in sliding connection with the first guide rail support and can be driven by the main shaft protective cover to stretch out and draw back in the length extending direction of the first guide rail support. Comprehensive physical isolation of the X-axis transverse moving assembly and the main shaft of the machine tool is achieved, and cuttings, cooling liquid and the like are effectively prevented from entering the area where the X-axis transverse moving assembly and the main shaft are located.

Description

Technical Field

[0001] This invention belongs to the field of machine tool design technology, specifically relating to a machine tool protective structure and a bullhead-type machine tool. Background Technology

[0002] In shaper CNC machine tools (such as shaper planers and shaper milling machines), the X and Z axes serve as the core motion axes, responsible for the transverse feed of the workpiece and the vertical lifting of the spindle. To ensure safety and environmental cleanliness during machining, protective covers are typically installed in the X and Z axis movement areas to prevent chip splashing, coolant spillage, and accidental contact with moving parts by operators.

[0003] Existing technologies have shortcomings in providing thorough protection and isolation. Specifically, some protective covers only provide protection through partial shielding and fail to achieve complete physical isolation between the X-axis and Z-axis moving parts and the machining area. This allows chips or coolant to still seep in through the gaps, affecting the accuracy and lifespan of the machine tool. Summary of the Invention

[0004] Therefore, the present invention provides a machine tool protection structure and a bullhead machine tool, which can overcome the shortcomings of the machine tool protection structure in the related technology, which only provides partial shielding protection for some components such as the spindle, and cannot achieve complete physical isolation between the X-axis and Z-axis moving parts and the machining area, resulting in chips or coolant still being able to seep in from the gaps, reducing the accuracy and life of the machine tool.

[0005] To address the aforementioned problems, this invention provides a machine tool protective structure, comprising a first transverse protective cover, a second transverse protective cover, a third transverse protective cover, a first guide rail bracket, and at least two spindle protective covers. The first guide rail bracket is assembled on the machine tool crossbeam. Each spindle protective cover is spaced apart along the length of the first guide rail bracket. The third transverse protective cover is located between two adjacent spindle protective covers and its width is connected to the sides corresponding to the positions of the spindle protective covers. The first and second transverse protective covers are respectively connected to the sides of each spindle protective cover away from the third transverse protective cover. Furthermore, the first, second, and third transverse protective covers are all slidably connected to the first guide rail bracket and can extend and retract along the length of the first guide rail bracket under the influence of the spindle protective covers. The X-axis transverse component and spindle of the machine tool are located on the side of the first, second, third, and spindle protective covers away from the machine tool's working area.

[0006] In some embodiments, the first guide rail bracket is located on the side of the first transverse protective cover, the second transverse protective cover, the third transverse protective cover, and each spindle protective cover away from the machine tool working area.

[0007] In some embodiments, the spindle guard includes a fixed outer cover and a lifting inner cover inserted inside the fixed outer cover. The lifting inner cover is assembled on the spindle box. With reference to the orientation of the machine tool protection structure in use, the fixed outer cover includes an outer cover body and connecting flanges formed on the left and right sides of the outer cover body. The first transverse protective cover, the second transverse protective cover, and the third transverse protective cover are connected to each of the fixed outer covers via the connecting flanges corresponding to their positions, and the fixed outer cover is assembled on the transverse slide of the spindle box via the connecting flanges.

[0008] In some embodiments, the lifting inner cover includes an inner cover body and side blocking flanges formed on the left and right sides of the inner cover body. During the lifting and lowering process of the lifting inner cover, the side blocking flanges are attached to the inner side of the connecting flanges corresponding to their positions, and the inner cover body is attached to the inner side of the outer cover body corresponding to its positions.

[0009] In some embodiments, a bottom protective plate is assembled on the bottom end face of the lifting inner cover, and the bottom end of the inner cover has a bottom flange extending toward its inner side, the bottom flange covering the outer side of the outer edge of the bottom protective plate; and / or, an inspection port is formed on the inner cover, and a blocking plate is detachably connected to the inspection port.

[0010] In some embodiments, the first transverse protective cover, the second transverse protective cover, the third transverse protective cover and the connecting flange are connected via an adapter plate, and the adapter plate is assembled on the transverse slide.

[0011] In some embodiments, the machine tool protective structure further includes two side plates, each of which is connected to the side of the first transverse protective cover and the second transverse protective cover away from the spindle protective cover, and the side plates can be fixedly connected to the end faces of the transverse sides of the machine tool beam.

[0012] In some embodiments, each of the side panels is connected to a connecting block on the side facing the machine tool crossbeam, and each of the side panels is connected to the machine tool crossbeam via the connecting block.

[0013] In some embodiments, the machine tool protective structure further includes a second guide rail bracket, which is assembled between two side uprights and is parallel and spaced apart from the first guide rail bracket. The second guide rail bracket is located in the upper region of the first guide rail bracket, and the top ends of the first transverse protective cover, the second transverse protective cover, the third transverse protective cover, and each of the outer covers are slidably connected to the second guide rail bracket.

[0014] The present invention also provides a bullhead type machine tool, including a machine tool cover and the above-mentioned machine tool protective structure, wherein the side plate and the second guide rail bracket of the machine tool protective structure are connected to the machine tool cover as a whole.

[0015] The machine tool protective structure and bullhead machine tool provided by this invention have the following beneficial effects: The first, second, and third transverse protective covers and the spindle protective cover are arranged adjacent to each other along the width of the machine tool beam to form an isolation and protection structure. This isolates the X-axis transverse components and the spindle of the machine tool on the side away from the working area of ​​the machine tool, thereby achieving complete physical isolation of the X-axis transverse components and the spindle. This effectively prevents chips, coolant, and other contaminants from entering the area where the X-axis transverse components and the spindle are located, which can extend the service life of transmission components such as lead screws and guide rails, and also prevent the reduction of machine tool accuracy due to chips and other contaminants. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is a front view of the machine tool protective structure in an embodiment of the present invention (projected from the machine tool working area to the side of the machine tool crossbeam). Figure 2 yes Figure 1 A three-dimensional structural diagram of the machine tool protective structure, omitting components such as the spindle guard and adapter plate; Figure 3 yes Figure 2 A side view of one of the first, second, and third transverse protective covers in the slide connection state with the first and second guide rail supports. Figure 4 yes Figure 1 A three-dimensional structural diagram of the spindle protective cover; Figure 5 yes Figure 1 A three-dimensional structural diagram of the spindle guard from another perspective; Figure 6 yes Figure 5 A magnified view of a section at point A in the middle; Figure 7 This is a schematic diagram of the machine tool protective structure of the present invention after it has been assembled onto the machine tool crossbeam.

[0018] The attached figures are labeled as follows: 1. First transverse protective cover; 2. Second transverse protective cover; 3. Third transverse protective cover; 4. First guide rail bracket; 5. Spindle protective cover; 51. Fixed outer cover; 511. Outer cover body; 512. Connecting flange; 52. Lifting inner cover; 521. Inner cover body; 5211. Inspection port; 522. Covering flange; 523. Bottom side flange; 53. Bottom end protective plate; 531. Machine head through hole; 6. Side upright plate; 61. Connecting block; 7. Adapter plate; 8. Second guide rail bracket; 100. Machine tool crossbeam. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0021] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90° or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0022] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0023] See also Figures 1 to 7 As shown, according to an embodiment of the present invention, a machine tool protective structure is provided, including a first transverse movement protective cover 1, a second transverse movement protective cover 2, a third transverse movement protective cover 3, a first guide rail bracket 4, and at least two spindle protective covers 5. The first guide rail bracket 4 is assembled on a machine tool crossbeam 100. Each of the spindle protective covers 5 is spaced apart along the length direction of the first guide rail bracket 4 (i.e., the width direction of the aforementioned machine tool crossbeam 100, i.e., the X-axis direction). The third transverse movement protective cover 3 is located between two adjacent spindle protective covers 5, and its width sides are connected to the sides corresponding to the positions of the spindle protective covers 5. The first transverse movement protective cover 1 and the second transverse movement protective cover 2 are respectively located away from each of the spindle protective covers 5 from the third transverse movement protective cover 5. The side connection of the protective cover 3 on one side is understood to mean that the aforementioned side connections with the spindle protective cover 5 should have a certain sealing performance. For example, the connection position between the two is a surface sealing structure (forming a natural surface sealing structure after surface-to-surface contact). Furthermore, the first transverse protective cover 1, the second transverse protective cover 2, and the third transverse protective cover 3 are all slidably connected to the first guide rail bracket 4 and can extend and retract along the length extension direction of the first guide rail bracket 4 under the drive of the spindle protective cover 5. The X-axis transverse component (not shown in the figure) and the spindle (not shown in the figure) of the machine tool are all located away from the machine tool working area (within the range of the first transverse protective cover 1, the second transverse protective cover 2, the third transverse protective cover 3, and each spindle protective cover 5). Figure 7 The indicated orientation is for reference, i.e., the area near the front of the paper. In one specific embodiment, the aforementioned first transverse protective cover 1, second transverse protective cover 2, and third transverse protective cover 3 can all be accordion covers, that is, the extension and retraction of each transverse protective cover specifically involves switching between two states: folded and unfolded. In one specific embodiment, see [link to specific embodiment]. Figure 1 As shown, the machine tool protective structure has three spindle guards 5, and correspondingly, there are two third transverse guards 3. Thus, in the width direction of the machine tool beam 100, the first transverse guard 1, spindle guard 5, third transverse guard 3, spindle guard 5, third transverse guard 3, spindle guard 5, and second transverse guard 2 are formed by overlapping left and right sides to form an isolation and protection structure.

[0024] In this technical solution, the first transverse protective cover 1, the second transverse protective cover 2, the third transverse protective cover 3, and the spindle protective cover 5 are arranged adjacent to each other along the width direction of the machine tool beam 100 to form an isolation and protection structure. This isolates the X-axis transverse component and the spindle of the machine tool to the side away from the working area of ​​the machine tool, thereby achieving complete physical isolation of the X-axis transverse component and the spindle of the machine tool. This effectively prevents chips, coolant, etc. from entering the area where the X-axis transverse component and the spindle are located, which can extend the service life of transmission components such as lead screws and guide rails, and also prevent the reduction of machine tool accuracy due to chips, etc.

[0025] In some embodiments, the first guide rail bracket 4 is located on the side of the first transverse protective cover 1, the second transverse protective cover 2, the third transverse protective cover 3 and each spindle protective cover 5 away from the machine tool working area.

[0026] In this technical solution, the first guide rail bracket 4 is also set away from the working area of ​​the machine tool by the first transverse protective cover 1, the second transverse protective cover 2, the third transverse protective cover 3 and each spindle protective cover 5, thereby effectively preventing the transverse jamming caused by chips entering the sliding connection mating surface of the first guide rail bracket 4 and each protective cover.

[0027] It should be noted that the aforementioned first guide rail bracket 4 can be directly slidably connected to each protective cover. In other preferred embodiments, corresponding sliders are provided on the side of each protective cover. By sliding the sliders to the first guide rail bracket 4, the protective cover structure can be protected and the service life of the protective cover can be improved.

[0028] In some implementation methods, see details in conjunction with the provided text. Figures 4 to 6 As shown, the spindle protective cover 5 includes a fixed outer cover 51 and a lifting inner cover 52 inserted into the inner side of the fixed outer cover 51. The lifting inner cover 52 is assembled on the spindle box (not shown in the figure, which is the external frame structure of the spindle) so that it can move with the spindle box in the Z-axis direction. Taking the orientation of the machine tool protective structure in the use state as a reference, the fixed outer cover 51 includes an outer cover body 511 and connecting flanges 512 formed on the left and right sides of the outer cover body 511. The first transverse protective cover 1, the second transverse protective cover 2, and the third transverse protective cover 3 are connected to each of the fixed outer covers 51 via the connecting flanges 512 corresponding to their positions, and the fixed outer cover 51 is assembled on the transverse slide of the spindle box via the connecting flanges 512 so that it can move with the spindle box in the transverse direction (i.e., move in the X-axis direction). In a specific embodiment, the plane connecting the aforementioned connecting flanges 512 and the outer cover body 511 forms a 90° perpendicularity.

[0029] In this technical solution, the spindle protective cover includes a fixed outer cover 51 and a lifting inner cover 52 inserted therein. The lifting inner cover can rise and fall with the spindle box, thereby achieving isolation and protection of the spindle box. At the same time, the fixed outer cover 51 is located outside the lifting inner cover 52 and is fixedly connected to the transverse slide of the spindle box and each transverse protective cover, thereby achieving complete isolation and protection during the transverse movement of the spindle X-axis.

[0030] In some embodiments, the lifting inner cover 52 includes an inner cover body 521 and side blocking flanges 522 formed on the left and right sides of the inner cover body 521. During the lifting process of the lifting inner cover 52, the side blocking flanges 522 are attached to the inner side of the connecting flange 512 corresponding to their position, and the inner cover body 521 is attached to the inner side of the outer cover body 511 corresponding to its position.

[0031] In this technical solution, on the one hand, shielding flanges 522 are provided on the left and right sides of the inner cover 521 to fit with the inner side of the connecting flange 512 on the outer cover 511. On the other hand, the outer wall surface of the inner cover 521 is fitted with the inner wall surface of the outer cover 511. This can minimize the gap between the two in the inserted state and further reduce the probability of chips and other materials entering the rear area of ​​the protective cover through the gap.

[0032] In some embodiments, a bottom protective plate 53 is assembled on the bottom side end face of the lifting inner cover 52, and the bottom end of the inner cover 521 has a bottom flange 523 extending toward its inner side, the bottom flange 523 covering the outer side of the outer edge of the bottom protective plate 53.

[0033] In this technical solution, the bottom flange 523 extending inward from the bottom end of the inner cover 521 can block the edge gap of the bottom protective plate 53, which can further reduce the probability of chips and other materials entering the rear area of ​​the protective cover through the gap.

[0034] In one specific embodiment, both the aforementioned fixed outer cover 51 and the lifting inner cover 52 are made of sheet metal.

[0035] It is understandable that a machine head passage hole 531 for the machine head to pass through is also formed on the bottom protective plate 53.

[0036] In some embodiments, an inspection port 5211 is formed on the inner cover 521, and a blocking plate (not shown in the figure) is detachably connected to the inspection port 5211, so that the main shaft inside can be inspected without removing the lifting inner cover 52.

[0037] In some embodiments, the first transverse protective cover 1, the second transverse protective cover 2, the third transverse protective cover 3 are connected to the connecting flange 512 via an adapter plate 7, and the adapter plate 7 is assembled on the transverse slide of the spindle box.

[0038] In this technical solution, the corresponding connecting flange 512 of the adjacent transverse protective cover and the main spindle protective cover 5 is connected by the adapter plate 7, which can reduce the difficulty of selecting the transverse protective cover and meet the structural compatibility requirements of the transverse protective cover and the main spindle protective cover 5.

[0039] In some embodiments, the machine tool protective structure further includes two side plates 6, each of which is connected to the side of the first transverse protective cover 1 and the second transverse protective cover 2 away from the spindle protective cover 5, and the side plates 6 can be fixedly connected to the end faces of the transverse sides of the machine tool beam 100.

[0040] In this technical solution, the aforementioned side plate 6 serves as an X-axis lateral movement limiting component for the first lateral movement protective cover 1 and the second lateral movement protective cover 2, and as an assembly and positioning component for the entire machine tool protective structure and the machine tool crossbeam 100, which facilitates the assembly of the machine tool protective structure and the machine tool crossbeam 100.

[0041] In some embodiments, each of the side plates 6 is connected to a connecting block 61 on the side facing the machine tool crossbeam 100, and each of the side plates 6 is connected to the machine tool crossbeam 100 via the connecting block 61.

[0042] In this technical solution, each side plate 6 is connected to the machine tool crossbeam 100 via a connecting block 61, which reduces the requirements for the flatness of the assembly end face of the machine tool crossbeam 100 and the structural design of the machine tool crossbeam 100 when directly assembling the side plate 6 with the machine tool crossbeam 100. In a specific embodiment, the connecting block 61 has oblong holes to form a reliable connection with the machine tool crossbeam 100 and the side plate 6 through these oblong holes.

[0043] In some embodiments, the machine tool protective structure further includes a second guide rail bracket 8, which is assembled between two side uprights 6 and is arranged parallel to and spaced apart from the first guide rail bracket 4. The second guide rail bracket 8 is located in the upper region of the first guide rail bracket 4, and the tops of the first transverse protective cover 1, the second transverse protective cover 2, the third transverse protective cover 3, and each of the outer covers 511 are slidably connected to the second guide rail bracket 8. It should be noted that an X-axis transverse drive assembly is provided on the top surface of the machine tool beam 100. In order to ensure the isolation and protection of the components provided on the top surface of the machine tool beam 100, the height of the tops of the aforementioned first transverse protective cover 1, the second transverse protective cover 2, the third transverse protective cover 3, and each of the outer covers 511 is higher than the space height occupied by the top assembly components of the machine tool beam 100.

[0044] In this technical solution, a second guide rail bracket 8 is further installed within the machine tool protective structure, positioned above and parallel to the first guide rail bracket 4. The tops of the first transverse protective cover 1, the second transverse protective cover 2, the third transverse protective cover 3, and each of the outer covers 511 are slidably connected to the second guide rail bracket 8. On one hand, the second guide rail bracket 8 can reliably support the side uprights 6 spaced apart on both sides, ensuring the stability and reliability of the machine tool protective structure. On the other hand, it can work with the first guide rail bracket 4 to guide the transverse movement of the first transverse protective cover 1, the second transverse protective cover 2, the third transverse protective cover 3, and the tops of each of the outer covers 511. Compared with the method of using a single guide rail bracket, it can form a dual-rail load sharing, thereby reducing the size and rigidity requirements of a single guide rail bracket, improving the smooth transverse movement guidance of the transverse protective cover, improving the overall rigidity of the machine tool protective structure, and ensuring the smooth and stable transverse movement of each protective cover. Smooth and stable transverse movement can prevent the protective cover from jamming or shifting during transverse movement, which is conducive to improving the machining accuracy of the machine tool.

[0045] Furthermore, it is particularly important to emphasize that, because this application employs both the first guide rail bracket 4 and the second guide rail bracket 8 to simultaneously guide the lateral movement of each protective cover, both guide rail brackets can be designed to be relatively small in size (requiring less assembly space). This makes the machine tool protection structure of this invention particularly suitable for bullhead machine tools with small throat depths. Specifically, in bullhead machine tools with small throat depths, the X-axis protective cover is often space-constrained. In such cases, the installation space for the X-axis protective cover is severely compressed, making it impossible to accommodate traditional multi-point support or complex guide structures. Single-rail guidance only sets a guide rail on one side of the protective cover, leaving the other side unconstrained. This fails to limit lateral displacement and rotational freedom. During movement, the protective cover is prone to lateral offset (Y direction), vertical jump (Z direction vibration), friction or jamming with the guide rail edge, frequent start-stop of the X-axis protective cover during operation, and instability exacerbated by high-speed reciprocating motion. The dual-guide rail design of this application effectively avoids the shortcomings of the aforementioned single-rail design.

[0046] According to an embodiment of the present invention, a bullhead-type machine tool is also provided, including a machine tool cover (not shown in the figure) and the above-mentioned machine tool protective structure. The side plate 6 and the second guide rail bracket 8 of the machine tool protective structure are connected to the machine tool cover as a whole. In a specific embodiment, the aforementioned side plate 6 is bolted to the corresponding area of ​​the machine tool cover through its vertical surface and top surface, and the top surface of the aforementioned second guide rail bracket 8 is bolted to the corresponding area of ​​the machine tool cover as a whole.

[0047] In this technical solution, by further connecting the side plate 6 of the machine tool protective structure, the second guide rail bracket 8, and the machine tool cover into one unit, the overall rigidity of the machine tool protective structure can be further improved, the vibration caused by the machine tool protective structure during machine tool operation can be reduced, and the machining accuracy of the machine tool can be improved.

[0048] The following describes the machine tool protective structure of the present invention and its assembly with the machine tool: In the actual assembly process, the first step is to assemble each transverse protective cover: One side plate 6 is connected to the corresponding connecting block 61 as a whole (by bolts). Then, the side plate 6 is connected and fixed to one end face of the machine tool crossbeam 100 through the connecting block 61. Similarly, the other side plate 6 is connected to the corresponding connecting block 61 as a whole. Then, the side plate 6 is connected and fixed to the other end face of the machine tool crossbeam 100 through the connecting block 61, thus forming the overall frame of the machine tool protective structure. Next, the first guide rail bracket 4 is fixed to the side of the machine tool crossbeam 100 facing the machining area. Then, each transverse protective cover (the aforementioned first transverse protective cover 1, second transverse protective cover 2, and third transverse protective cover 3) is slidably engaged with the first guide rail bracket 4. Specifically, the left side of the first transverse protective cover 1 (refer to...) is... Figure 1 (As shown in the diagram) is bolted to the left side plate 6, and to one side of a transition plate 7 on the right side. The right side of the second transverse protective cover 2 is bolted to the right side plate 6, and the left side is bolted to one side of another transition plate 7. A transition plate 7 is connected to each of the left and right sides of the third transverse protective cover 3. Each transition plate 7 is also slidably engaged with the first guide rail bracket 4. After the left and right sides of each transverse protective cover are connected, the second guide rail bracket 8 is slidably engaged with the top of each transverse protective cover.

[0049] Then proceed with the assembly of the spindle guard 5: The bottom protective plate 53 is now assembled onto the bottom side end face of the spindle box. Then, the lifting inner cover 52 is assembled onto the spindle box, with its bottom flange 523 covering the outer edge of the bottom protective plate 53. After that, the fixed outer cover 51 is bolted to each of the adapter plates 7 connected on one side in the previous step through the connecting flanges 512 on its left and right sides. The top of the fixed outer cover 51 is then slidably engaged with the second guide rail bracket 8, thus completing the assembly of the entire machine tool protective structure and the machine tool crossbeam 100.

[0050] Finally, the side and top surfaces of the aforementioned side uprights 6 are bolted to the machine tool cover, and the second guide rail bracket 8 is bolted to the machine tool cover to improve the rigidity of the entire machine tool protective structure.

[0051] It should be noted that, see Figure 1The centrally located spindle guard 5 shown in the diagram needs to be blocked by the first guide rail bracket 4 located below when the spindle is raised to its highest position to prevent chips, coolant, etc. from entering the transmission area (non-machining area). This can be achieved by limiting the lifting stroke of the spindle's Z-axis lead screw.

[0052] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A machine tool protective structure, characterized in that, The system includes a first transverse protective cover (1), a second transverse protective cover (2), a third transverse protective cover (3), a first guide rail bracket (4), and at least two spindle protective covers (5). The first guide rail bracket (4) is assembled on the machine tool crossbeam (100). Each spindle protective cover (5) is spaced apart along the length of the first guide rail bracket (4). The third transverse protective cover (3) is located between two adjacent spindle protective covers (5) and its width is connected to the sides corresponding to the positions of the spindle protective covers (5). The first transverse protective cover (1) and the second transverse protective cover (2) are respectively... The spindle guards (5) are connected to the side away from the third transverse guard (3), and the first transverse guard (1), the second transverse guard (2) and the third transverse guard (3) are all slidably connected to the first guide rail bracket (4) and can extend and retract along the length extension direction of the first guide rail bracket (4) under the drive of the spindle guards (5). The X-axis transverse component and the spindle of the machine tool are all located on the side away from the working area of ​​the machine tool, including the first transverse guard (1), the second transverse guard (2), the third transverse guard (3) and each spindle guard (5).

2. The machine tool protective structure according to claim 1, characterized in that, The first guide rail bracket (4) is located on the side away from the machine tool working area of ​​the first transverse protective cover (1), the second transverse protective cover (2), the third transverse protective cover (3) and each spindle protective cover (5).

3. The machine tool protective structure according to claim 1, characterized in that, The spindle guard (5) includes a fixed outer cover (51) and a lifting inner cover (52) inserted into the inner side of the fixed outer cover (51). The lifting inner cover (52) is assembled on the spindle box. Taking the orientation of the machine tool protection structure in use as a reference, the fixed outer cover (51) includes an outer cover body (511) and connecting flanges (512) formed on the left and right sides of the outer cover body (511). The first transverse protective cover (1), the second transverse protective cover (2), and the third transverse protective cover (3) are connected to each of the fixed outer covers (51) via the connecting flanges (512) corresponding to their positions. The fixed outer cover (51) is assembled on the transverse slide of the spindle box via the connecting flanges (512).

4. The machine tool protection structure according to claim 3, characterized in that, The lifting inner cover (52) includes an inner cover body (521) and side blocking flanges (522) formed on the left and right sides of the inner cover body (521). During the lifting process of the lifting inner cover (52), the side blocking flanges (522) are attached to the inner side of the connecting flange (512) corresponding to their position, and the inner cover body (521) is attached to the inner side of the outer cover body (511) corresponding to its position.

5. The machine tool protective structure according to claim 4, characterized in that, A bottom protective plate (53) is assembled on the bottom side end face of the lifting inner cover (52), and the bottom end of the inner cover body (521) has a bottom flange (523) extending toward its inner side, the bottom flange (523) covering the outer side of the outer edge of the bottom protective plate (53); and / or, an inspection port (5211) is formed on the inner cover body (521), and a blocking plate is detachably connected to the inspection port (5211).

6. The machine tool protective structure according to claim 3, characterized in that, The first transverse protective cover (1), the second transverse protective cover (2), and the third transverse protective cover (3) are connected to the connecting flange (512) via an adapter plate (7), and the adapter plate (7) is assembled on the transverse slide.

7. The machine tool protective structure according to claim 3, characterized in that, It also includes two side plates (6), each of which is connected to the side of the first transverse protective cover (1) and the second transverse protective cover (2) away from the spindle protective cover (5), and the side plates (6) can be fixedly connected to the end faces of the transverse sides of the machine tool beam (100).

8. The machine tool protective structure according to claim 7, characterized in that, Each of the side plates (6) is connected to a connecting block (61) on the side facing the machine tool crossbeam (100), and each of the side plates (6) is connected to the machine tool crossbeam (100) via the connecting block (61).

9. The machine tool protective structure according to claim 7, characterized in that, It also includes a second guide rail bracket (8), which is assembled between two side uprights (6) and is arranged parallel to and spaced apart from the first guide rail bracket (4). The second guide rail bracket (8) is located in the upper region of the first guide rail bracket (4), and the top ends of the first transverse protective cover (1), the second transverse protective cover (2), the third transverse protective cover (3) and each of the outer covers (511) are all slidably connected to the second guide rail bracket (8).

10. A bullhead-type machine tool, characterized in that, The machine tool includes a machine tool cover and a machine tool protective structure as described in any one of claims 1 to 9, wherein the side plate (6) and the second guide rail bracket (8) of the machine tool protective structure are connected to the machine tool cover as a whole.

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