A head device and a machine tool

Abstract

This utility model relates to the field of machine tools, specifically to a machine head assembly and a machine tool. The machine head assembly includes a slide saddle, a slide ram, a gearbox, and a fixed bracket. The fixed bracket includes a first bracket, a second bracket, and a connecting bracket arranged in a U-shape, with the gearbox located within the U-shaped opening. A first mounting position is provided on the first bracket for mounting a cable chain bracket. A hollowed-out structure is provided on the second bracket to provide mounting space for a linear encoder, solving the problem of easy interference between the linear encoder and other structures. The fixed bracket design of this application integrates the cable chain and the linear encoder onto the fixed bracket, simplifying the structure and facilitating the removal of components from the fixed bracket.

Description

Technical Field

[0001] This utility model relates to the field of machine tools, and more specifically, to a machine head device and a machine tool. Background Technology

[0002] In existing gantry milling machines, the ram is fitted with a gearbox, which is mounted on top of the ram. In this mounting method, components such as the balance cylinder bracket, cable chain bracket, and linear scale bracket are all screwed onto the gearbox. When the gearbox or other components require maintenance, the parts connected to it must be removed, resulting in a large workload, high difficulty, and high maintenance costs. Furthermore, directly mounting components onto the gearbox also affects its stability and accuracy.

[0003] Therefore, how to facilitate the maintenance of the gearbox or its connected components is a technical problem that needs to be further solved by those skilled in the art. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a fixed bracket and a machine tool.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] The first aspect of this utility model provides a machine head device, including: a slide saddle, a slide block slidably disposed on the slide saddle, and a gearbox fixed above the slide block. The device is characterized in that it further includes a fixing bracket, which is fixed to the gearbox or the slide block. The fixing bracket includes a first bracket, a second bracket, and a connecting bracket connecting the first bracket and the second bracket. The first bracket, the second bracket, and the connecting bracket form a through U-shaped opening, and the gearbox is located inside the U-shaped opening.

[0007] The first bracket has a first plate on top, the upper surface of the first plate has a first mounting position, and a drag chain bracket is installed on the first mounting position.

[0008] A second plate is installed above the second support, and a hollow structure is provided between the second plate and the bottom panel of the second support. A grating ruler is installed in the hollow structure.

[0009] Furthermore, a balance cylinder is provided on the saddle, and a first cylinder support plate parallel to the first plate is also provided on the first support. The first cylinder support plate is located between the bottom plate of the first support and the first plate, and the first cylinder support plate is in a stop-and-go engagement with at least one balance cylinder.

[0010] Furthermore, a second cylinder support plate parallel to the second plate is provided on the second bracket. The second cylinder support plate is located between the bottom plate of the second bracket and the second plate, and the second cylinder support plate is in abutting cooperation with at least one balance cylinder.

[0011] Furthermore, the two opposite sides of the U-shaped opening are provided with adapter rails, and the adapter rails are aligned with the opening direction of the U-shaped opening.

[0012] Furthermore, the first bracket also includes a first side plate, a second side plate, and a third side plate arranged around the bottom panel of the first bracket, the first side plate and the second side plate being arranged opposite to each other, and the third side plate being arranged on the side near the U-shaped opening;

[0013] The second bracket also includes a fourth side plate, a fifth side plate, and a sixth side plate arranged around the bottom panel of the second bracket. The fourth side plate and the fifth side plate are arranged opposite each other, and the sixth side plate is located on the side near the U-shaped opening.

[0014] Furthermore, the connecting bracket is provided with an inspection port with a through U-shaped opening; and / or,

[0015] The upper surface of the second plate is provided with a second mounting position for installing the pump structure; the slide is provided with a spindle for machining.

[0016] Furthermore, the first side plate and the second side plate are L-shaped structures, each including a first horizontal plate and a first vertical plate, and the connection between the first horizontal plate and the first vertical plate is an inclined first inclined structure connection.

[0017] The fourth and fifth side panels are L-shaped structures, each including a second horizontal plate and a second vertical plate. The inner angle connecting the second horizontal plate and the second vertical plate is an inclined second inclined structure connection; and / or,

[0018] The upper surface of the second plate is provided with a second mounting position for installing the pump structure.

[0019] Furthermore, along the first direction from the first bracket to the second bracket, the width of the first cylinder bracket plate is greater than the width of the bottom panel of the first bracket, and the width of the second cylinder bracket plate is greater than the width of the bottom panel of the second bracket.

[0020] A second aspect of this utility model provides a machine tool, including a base, a worktable, a first column, a second column, a crossbeam, a cable chain, and a machine head device of any one of the above. The worktable is disposed on the base, the first column and the second column are disposed on the base at intervals, the worktable is located between the first column and the second column, and the crossbeam is mounted on the first column and the second column. A saddle is disposed on the crossbeam, and one end of the cable chain bracket away from the fixed bracket is connected to one end of the cable chain, and the other end of the cable chain is disposed on the crossbeam.

[0021] Furthermore, the machine head device also includes a balance cylinder. When the slide moves to the side of the worktable to a preset position, the first cylinder plate on the first bracket and the second cylinder plate on the second bracket abut against the corresponding balance cylinder. The grating ruler is installed on the slide and passes through the hollow structure.

[0022] The gearbox has a guide rail groove on its side, and the fixing bracket is mounted on the gearbox by means of the matching guide rail on the U-shaped opening and the guide rail groove.

[0023] The beneficial effects of this utility model are as follows: a first mounting position is provided on the fixed bracket, and a hollow structure is provided on the second bracket. In actual use, the first mounting position is used to install the cable chain bracket, and the hollow structure provides installation space for the grating ruler, solving the problem of easy interference between the grating ruler and other structures. The fixed bracket design of this application integrates the cable chain and the grating ruler onto the fixed bracket, simplifying the structure and facilitating the disassembly of components from the fixed bracket. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of the structure of the head assembly of this utility model.

[0026] Figure 2 This is a structural schematic diagram of the fixed bracket of this utility model;

[0027] Figure 3 This is another structural schematic diagram of the fixed bracket of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the machine tool of this utility model;

[0029] Figure 5 This is a partially enlarged schematic diagram of the machine tool of this utility model.

[0030] The attached figures are labeled as follows:

[0031] 10-Slide saddle;

[0032] 20-Slide pillow;

[0033] 30-Gearbox;

[0034] 40 - Fixed bracket;

[0035] 41-First bracket, 411-First plate, 412-First mounting position, 413-First cylinder bracket plate, 414-First side plate, 4141-First horizontal plate, 4142-First vertical plate, 4143-First inclined structure, 415-Second side plate, 416-Third side plate;

[0036] 42-Second bracket, 421-Second plate, 422-Hollowed structure, 423-Second cylinder frame plate, 424-Fourth side plate, 4241-Second horizontal plate, 4242-Second vertical plate, 4243-Second inclined structure, 425-Fifth side plate, 426-Sixth side plate, 427-Second mounting position;

[0037] 43-Connecting bracket, 431-Inspection port;

[0038] 44-U-shaped opening, 441-adapter rail;

[0039] 50-Drag chain bracket;

[0040] 60-grating ruler;

[0041] 70-Balance cylinder;

[0042] 80-Pump structure;

[0043] 100-Base, 200-Workbench, 300-First Column, 400-Second Column, 500-Crossbeam, 600-Drag Chain. Detailed Implementation

[0044] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0045] In traditional machine head units, the connection structure between the gearbox and the ram lacks an integrated installation design for accessories such as the linear encoder and cable chain, resulting in a complex equipment layout and difficult maintenance. This embodiment achieves integrated gearbox protection, cable chain support, and linear encoder installation by optimizing the fixed bracket structure.

[0046] refer to Figures 1 to 3 The first aspect of this utility model provides a machine head device, which is applied in equipment such as CNC machine tools or machining centers, to realize the precise guidance of the slide ram 20 and the function of accessory installation. The machine head device includes a slide saddle 10, a slide ram 20, a gearbox 30, and a fixed bracket 40. The slide ram 20 is slidably mounted on the slide saddle 10. The gearbox 30 is fixed to the top of the slide ram 20 by bolts. A spindle for machining is provided on the slide ram.

[0047] The fixed bracket 40 includes a first bracket 41, a second bracket 42, and a connecting bracket 43 forming a U-shaped opening 44. The U-shaped opening 44 is wider than the gearbox 30, ensuring that the gearbox 30 is completely embedded within the U-shaped opening 44. A first plate 411 is provided above the first bracket 41, and a first mounting position 412 is provided on the upper end face of the first plate 411. The first mounting position 412 has several threaded holes, and the drag chain bracket 50 is fixed to the fixed bracket 50 by bolts. A second plate 421 is provided above the second bracket 42, and a hollow structure 422 is provided between the second plate 421 and the bottom plate of the second bracket 42. That is, a hollow structure is provided in the bottom plate of the second bracket 42, and a hollow section is provided in the plate (i.e., the sixth side plate 426) on the side of the second bracket 42 near the U-shaped opening 44. These two hollow sections are connected to form the hollow structure 422, through which the grating ruler 60 passes.

[0048] The gearbox 30 is completely enclosed by the U-shaped opening 44, preventing chips or coolant from splashing directly onto its surface and extending its service life. Meanwhile, the cable carrier bracket 50 and the grating ruler 60 are integrated on both sides of the fixed bracket 40, resulting in a compact equipment layout and neat cable routing. Maintenance only requires disassembling the fixed bracket 40 to simultaneously inspect the grating ruler 60 and the cable carrier 600. The design of the fixed bracket 40 in this application integrates the cable carrier bracket 50 and the grating ruler 60 onto it, simplifying the structure and facilitating the removal of components from the fixed bracket 40.

[0049] In one embodiment, reference Figure 2 and Figure 3 A balance cylinder 70 is installed on the slide saddle 10, and a first cylinder support plate 413 is added to the first bracket 41. The first cylinder support plate 413 is located between the bottom panel of the first bracket 41 and the first plate 411, and is parallel to the first plate 411. For example, when the slide ram 20 moves downward along the slide saddle 10 to the position of the first cylinder support plate 413, the piston rod of the balance cylinder 70 will abut against the first cylinder support plate 413, thereby causing the balance cylinder 70 to work. The balance cylinder 70 can be a hydraulic cylinder. The tail of the cylinder body of the balance cylinder 70 is fixed to the preset mounting surface of the slide saddle 10 by bolts, and the front end of the piston rod contacts the first cylinder support plate 413 through a ball joint bearing. When the slide ram 20 moves on the slide saddle 10, the balance cylinder 70 applies a thrust to the first cylinder support plate 413 through the piston rod in the opposite direction to the gravity of the slide ram 20. The first cylinder support plate 413 presses against the balance cylinder 70, causing the balance cylinder 70 to work.

[0050] In one embodiment, reference Figure 2 and Figure 3A second cylinder support plate 423 is added to the second bracket 42 to realize the arrangement of dual balance cylinders 70. The traditional single balance cylinder 70 design is prone to motion vibration due to torque imbalance when the slide ram 20 is subjected to eccentric load or is tilted. The dual balance cylinder 70 structure can effectively counteract lateral forces and improve the dynamic stability and processing adaptability of the machine head device.

[0051] The second cylinder support plate 423 is fixed between the bottom panel of the second bracket 42 and the second plate 421, and is parallel to the second plate 421. A balance cylinder 70 on one side of the slide saddle 10 abuts against the first cylinder support plate 413, and a balance cylinder 70 on the other side of the slide saddle 10 abuts against the second cylinder support plate 423. By setting two cylinder support plates on the fixed bracket 40 to abut against the corresponding two balance cylinders 70, the structure of abutting the balance cylinders 70 is integrated onto the fixed bracket 40, avoiding the traditional need to set two frames on the gearbox 30 or slide ram 20 to abut against the balance cylinders 70, thus simplifying the structure. Furthermore, at least one balance cylinder can be set on one side of the first cylinder support plate, and at least one balance cylinder can be set on one side of the second cylinder support plate.

[0052] In one embodiment, reference Figure 1 and Figure 2 The U-shaped opening 44 has two opposite sides equipped with adapter guide rails 441, the opening direction of which is consistent with that of the U-shaped opening 44. A guide groove (not shown in the figure) is provided on the side of the gearbox 30, which mates with the adapter guide rail 441. When the mounting bracket 40 needs to be installed, the adapter guide rail 441 on the mounting bracket 40 is aligned with the guide groove, and then the adapter guide rail 441 is slid along the guide groove to the appropriate position, so that the gearbox 30 is located within the U-shaped opening 44. The guide groove and adapter guide rail 441 provide guidance for the assembly of the mounting bracket 40 and the gearbox 30.

[0053] In one embodiment, reference Figure 2 and Figure 3 The first bracket 41 and the second bracket 42 were optimized by adding a surrounding side plate structure to improve the overall strength and stability of the head assembly. The first bracket 41 and the second bracket 42, as key components of the support structure, provide the mounting foundation and support for other structures, ensuring the relative positional accuracy between each component.

[0054] The bottom panel of the first bracket 41 is rectangular, and a first side plate 414, a second side plate 415, and a third side plate 416 are arranged around the bottom panel. The first side plate 414 and the second side plate 415 are arranged opposite each other and are located on the left and right sides of the bottom panel, respectively; the third side plate 416 is located on the side near the U-shaped opening (44) and is located between the first side plate 414 and the second side plate 415. The first side plate 414, the second side plate 415, and the third side plate 416 can all be connected to the bottom panel of the first bracket 41 by welding.

[0055] The bottom panel of the second bracket 42 is also rectangular, and a fourth side plate 424, a fifth side plate 425, and a sixth side plate 426 are arranged around it. The fourth side plate 424 and the fifth side plate 425 are arranged opposite each other, located on the left and right sides of the bottom panel respectively; the sixth side plate 426 is located on the side near the U-shaped opening (44), between the first side plate 414 and the second side plate 415. Hollows are cut out in the bottom plate of the second bracket 42 and the sixth side plate 426 to form a hollow structure 422. The fourth side plate 424, the fifth side plate 425, and the sixth side plate 426 can also be connected to the bottom panel of the second bracket 42 by welding. The welding process is the same as that of the side plates of the first bracket 41 to ensure reliable welding quality.

[0056] In one embodiment, reference Figure 2 and Figure 3 A through-port 431 is provided on the connecting bracket 43 to facilitate quick and effective maintenance of the internal components of the head assembly. During the daily operation of the head assembly, maintenance personnel can periodically conduct visual inspections of the internal components through the through-port 431. When a malfunction occurs in the head assembly, maintenance personnel can quickly open the through-port 431 to conduct a detailed inspection and repair of the internal components. By providing the through-port 431 on the connecting bracket 43, the problem of difficult maintenance of traditional head assemblies is effectively solved, improving the maintenance efficiency and reliability of the head assembly, resulting in significant economic and social benefits.

[0057] In one embodiment, reference Figure 2 and Figure 3 The structure of the first side plate 414, the second side plate 415, the fourth side plate 424, and the fifth side plate 425 are optimized, and a special pump structure mounting position is set on the second plate 421 to improve the structural performance and ease of use of the head unit.

[0058] Both the first side plate 414 and the second side plate 415 have an L-shaped structure. This structure ensures the strength of the side plates themselves while providing reasonable installation space for other components of the head assembly. Both the first side plate 414 and the second side plate 415 include a first horizontal plate 4141 and a first vertical plate 4142. The first horizontal plate 4141 is positioned along a first direction X, and the first vertical plate 4142 is positioned along a second direction Y. The inner angle connecting the first horizontal plate 4141 and the first vertical plate 4142 is connected by an inclined first inclined structure 4143. By setting the inclined structure, the stress at the inner angle of the connection can be effectively dispersed, avoiding cracks and deformation caused by stress concentration.

[0059] The fourth side plate 424 and the fifth side plate 425 also have an L-shaped structure. Both the fourth side plate 424 and the fifth side plate 425 include a second horizontal plate 4241 and a second vertical plate 4242. The second horizontal plate 4241 is arranged along the first direction X and is used to connect with other horizontal components; the second vertical plate 4242 is arranged along the second direction Y. The inner angle connecting the second horizontal plate 4241 and the second vertical plate 4242 is connected by an inclined second inclined structure 4243. The use of inclined structures in the fourth side plate 424 and the fifth side plate 425 effectively improves the reliability and durability of the side plates when bearing loads.

[0060] This embodiment optimizes the structure of the first side plate 414, the second side plate 415, the fourth side plate 424, and the fifth side plate 425 of the head assembly by adopting an inclined connecting inner angle structure, which can effectively improve the structural strength and service life of the side plates.

[0061] A second mounting position 427 for mounting the pump structure is provided on the upper surface of the second plate 421. The position of the second mounting position 427 is carefully planned, taking into account the layout coordination between the pump structure and other components of the pump head assembly, as well as the convenience of connecting the pump's inlet and outlet water pipes. The second mounting position 427 can adopt a recessed design, which can provide stable support and positioning for the pump structure. The bottom of the recess is provided with multiple threaded holes for firmly fixing the pump structure to the second mounting position 427 with bolts.

[0062] In one embodiment, reference Figure 2 and Figure 3 The width relationships between the first cylinder support plate 413, the second cylinder support plate 423, and the bottom panels of the first support 41 and the second support 42 are specially designed to improve the overall performance and stability of the machine head assembly. Along the first direction X, the width of the first cylinder support plate 413 is greater than the width of the bottom panel of the first support 41, and the width of the second cylinder support plate 423 is greater than the width of the bottom plate of the second support 42. The cylinder support plates (including the first cylinder support plate 413 and the second cylinder support plate 423) are mainly used to drive actuators such as pneumatic or hydraulic cylinders.

[0063] Specifically, a balance cylinder 70 is installed on the slide saddle 10. When the slide ram 20 moves downward along the slide saddle 10 to a certain position, the cylinder support plate abuts against the piston rod of the balance cylinder 70 to drive the balance cylinder 70 to work. In actual operation, two balance cylinders 70 can be installed on the slide saddle 10. The first cylinder support plate 413 is used to push one balance cylinder 70, and the second cylinder support plate 423 is used to push the other balance cylinder 70. The width of the first cylinder support plate 413 is greater than the bottom plate of the first support 41, and the width of the second cylinder support plate 423 is greater than the bottom plate of the second support 42, so that the cylinder support plates (including the first cylinder support plate 413 and the second cylinder support plate 423) can push the balance cylinder 70.

[0064] A second aspect of the present invention provides a machine tool, with reference to... Figure 2 , Figure 4 and Figure 5 The machine tool includes a base 100, a worktable 200, a first column 300, a second column 400, a crossbeam 500, a drag chain 600, a linear scale 60, a balance cylinder 70, and a machine head device of any one of the above.

[0065] The worktable 200 is mounted on the base 100 and secured with multiple high-strength bolts. The first column 300 and the second column 400 are spaced apart on the base 100, with the worktable 200 positioned between them. This layout provides stable support for the machine tool during machining and facilitates workpiece loading, unloading, and operation. The crossbeam 500 is mounted on the first column 300 and the second column 400. The slide saddle 10 is mounted on the crossbeam 500 and can move horizontally on it. The ram 20 is mounted on the slide saddle 10 and can move vertically on it. One end of the cable chain bracket 50 is fixed to the fixed bracket 40, and the end of the cable chain bracket 50 away from the fixed bracket 40 is connected to one end of the cable chain 600. The other end of the cable chain 600 is mounted on the crossbeam 500 to protect the machine tool's cables and air hoses from wear and tear during operation.

[0066] The machine tool of this application is equipped with a fixed bracket, which allows the parts that were originally set on the gearbox on the machine tool to be integrated and set on the fixed bracket, simplifying the structural layout and increasing the installation and disassembly of the parts.

[0067] In one embodiment, reference Figure 2 , Figure 4 and Figure 5Two balance cylinders 70 are mounted on the slide saddle 10, located on opposite sides of the slide saddle 10. The balance cylinders 70 are hydraulically driven, and when the slide ram 20 moves to a preset position on the worktable 200, the two balance cylinders 70 abut against the first cylinder support plate 413 on the first support 41 and the second cylinder support plate 423 on the second support 42. This is achieved through the action of the balance cylinders 70.

[0068] The grating ruler 60 is mounted on the slide 20 to detect the position and displacement of the slide 20 in real time. The grating ruler 60 adopts a high-precision optical encoder, which can meet the requirements of high-precision machining. The grating ruler 60 passes through the hollow structure 422 on the second bracket 42. The size of the hollow structure 422 is designed according to the external dimensions of the grating ruler 60 to ensure that the grating ruler 60 can pass through smoothly without interference.

[0069] The operator inputs the machining program through the control system, and the machine tool starts running according to the program instructions. The crossbeam 500 moves horizontally on the column, the slide saddle 10 moves horizontally on the crossbeam 500, and the slide ram 20 moves vertically on the slide saddle 10, thereby bringing the machine head to the designated machining position. When the slide ram 20 moves to the preset position on the worktable 200, the balance cylinder 70 abuts against the corresponding first cylinder support plate 413 and second cylinder support plate 423.

[0070] The fixed bracket 40 is mounted on the gearbox 30 using a unique connection method. A guide rail groove is provided on the side of the gearbox 30, ensuring accuracy and stability when mated with the adapter guide rail 441. The adapter guide rail 441 is located inside the U-shaped opening 44, along the second direction Y. The shape of the adapter guide rail 441 matches the guide rail groove on the gearbox 30. The fixed bracket 40 is slowly pushed, allowing the adapter guide rail 441 to slide along the guide rail groove on the gearbox 30. A dedicated locking device is used to secure the fixed bracket 40 to the gearbox 30. The locking device uses high-strength bolts and nuts; tightening the bolts generates sufficient preload between the fixed bracket 40 and the gearbox 30, ensuring a secure and reliable connection. Simultaneously, an appropriate amount of thread-locking agent is applied to the connection area to prevent the bolts from loosening during use.

[0071] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A machine head assembly, comprising a slide saddle (10), a slide block (20) slidably disposed on the slide saddle (10), and a gearbox (30) fixed above the slide block (20), characterized in that, It also includes a fixed bracket (40), which is fixed to the gearbox (30) or the slide (20). The fixed bracket (40) includes a first bracket (41), a second bracket (42) and a connecting bracket (43) connecting the first bracket (41) and the second bracket (42). The first bracket (41), the second bracket (42) and the connecting bracket (43) form a through U-shaped opening (44), and the gearbox is located inside the U-shaped opening (44). Among them, a first plate (411) is provided above the first bracket (41), a first mounting position (412) is provided on the upper end surface of the first plate (411), and a drag chain bracket (50) is installed on the first mounting position (412). A second plate (421) is provided above the second bracket (42), and a hollow structure (422) is provided between the second plate (421) and the bottom panel of the second bracket (42), and a grating ruler (60) is installed in the hollow structure (422).

2. The handpiece device of claim 1, wherein, A balance cylinder (70) is provided on the sliding saddle (10), and a first cylinder support plate (413) parallel to the first plate (411) is also provided on the first support (41). The first cylinder support plate (413) is located between the bottom panel of the first support (41) and the first plate (411), and the first cylinder support plate (413) is in abutting cooperation with at least one balance cylinder (70).

3. The head assembly according to claim 2, characterized in that, The second support (42) is provided with a second cylinder bracket plate (423) parallel to the second plate (421). The second cylinder bracket plate (423) is located between the bottom plate of the second support (42) and the second plate (421). The second cylinder bracket plate (423) is in abutting cooperation with at least one balance cylinder (70).

4. The head assembly according to claim 3, characterized in that, The two opposite sides of the U-shaped opening (44) are provided with adapter rails (441), and the adapter rails (441) are aligned with the opening direction of the U-shaped opening (44).

5. The head assembly according to any one of claims 1-4, characterized in that, The first bracket (41) further includes a first side plate (414), a second side plate (415) and a third side plate (416) arranged around the bottom panel of the first bracket (41), the first side plate (414) and the second side plate (415) are arranged opposite to each other, and the third side plate (416) is arranged on the side near the U-shaped opening (44). The second bracket (42) further includes a fourth side plate (424), a fifth side plate (425) and a sixth side plate (426) arranged around the bottom panel of the second bracket (42), the fourth side plate (424) and the fifth side plate (425) are arranged opposite to each other, and the sixth side plate (426) is arranged on the side near the U-shaped opening (44).

6. The head assembly according to claim 5, characterized in that, The connecting bracket (43) is provided with an inspection port (431) that passes through the U-shaped opening (44); and / or, The upper end face of the second plate (421) is provided with a second mounting position (427) for mounting the pump structure (80); the slide is provided with a spindle for machining.

7. The head assembly according to claim 5, characterized in that, The first side plate (414) and the second side plate (415) are L-shaped structures, each including a first horizontal plate (4141) and a first vertical plate (4142). The connection between the first horizontal plate (4141) and the first vertical plate (4142) is an inclined first inclined structure (4143). The fourth side plate (424) and the fifth side plate (425) are L-shaped structures, each including a second horizontal plate (4241) and a second vertical plate (4242). The connection between the second horizontal plate (4241) and the second vertical plate (4242) is a second inclined structure (4243) with an inclined inner angle.

8. The head assembly according to claim 4, characterized in that, Along the first direction (X) from the first bracket (41) to the second bracket (42), the width of the first cylinder bracket plate (413) is greater than the width of the bottom panel of the first bracket (41), and the width of the second cylinder bracket plate (423) is greater than the width of the bottom panel of the second bracket (42).

9. A machine tool, comprising a base (100), a worktable (200), a first column (300), a second column (400), a crossbeam (500), a cable chain (600), and a machine head device according to any one of claims 1-8, wherein the worktable (200) is disposed on the base (100), the first column (300) and the second column (400) are disposed on the base (100) at intervals, the worktable (200) is located between the first column (300) and the second column (400), and the crossbeam (500) is supported on the first column (300) and the second column (400); a sliding saddle (10) is disposed on the crossbeam (500), one end of the cable chain bracket (50) away from the fixed bracket (40) is connected to one end of the cable chain (600), and the other end of the cable chain (600) is disposed on the crossbeam (500).

10. The machine tool according to claim 9, characterized in that, The machine head device also includes a balance cylinder (70). When the slide (20) moves to a preset position on the side of the worktable (200), the first cylinder support plate (413) on the first support (41) and the second cylinder support plate (423) on the second support (42) abut against the corresponding balance cylinder (70). The grating ruler (60) is installed on the slide (20) and passes through the hollow structure (422). The gearbox (30) has a guide rail groove on its side, and the fixed bracket (40) is mounted on the gearbox (30) through the matching guide rail (441) on the U-shaped opening (43) cooperating with the guide rail groove.

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