Machine head assembling structure for machine tool

Abstract

The utility model discloses a machine head assembly structure for a machine tool, which comprises a mounting section bar, the mounting section bar is mounted in a shell, a bearing support is mounted on one side of the mounting section bar, a screw rod is rotatably connected in the bearing support through a bearing, a motor seat is mounted on the mounting section bar at the top end of the bearing support, and a servo motor is mounted in the motor seat. The end of an output shaft of the servo motor is in transmission connection with a lead screw through a coupler, the outer side of the lead screw is in threaded connection with a nut, the end of the nut is connected with a lifting plate, a connecting groove is formed in the surface of the lifting plate, and a nut sleeve capable of being telescopically adjusted is arranged in the connecting groove. According to the machine head assembling structure for the machine tool, the servo motor drives the lead screw to be matched with the adjustable nut sleeve structure, micron-order precise lifting control is achieved, the telescopic adjusting design of the nut sleeve can eliminate installation gaps caused by the work difference of parts, and the machine head assembling structure is matched with a sliding rail transmission and light-weight aluminum alloy profile structure; and stable operation of the machine head and high repeated positioning precision can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, specifically to a machine tool head assembly structure. Background Technology

[0002] A five-axis machine tool is a high-tech, high-precision machine tool specifically designed for machining complex curved surfaces. It can complete the machining of five sides of a workpiece in a single setup. When equipped with a high-end five-axis CNC system, it can also perform high-precision machining of complex spatial curved surfaces, making it even more suitable for machining modern molds such as automotive parts and aircraft structural components.

[0003] Traditional machine head height adjustment relies heavily on manual mechanical devices, making it difficult to achieve fast and precise displacement control. This is especially inefficient when processing multiple workpieces or switching between complex processes. In existing machine heads, the connection between the outer slider of the lead screw and the lifting plate is a fixed structure, which cannot fine-tune the installation gap between the lead screw nut and the lead screw and the lifting plate, resulting in poor machining accuracy. Furthermore, the structure of the mounting profile in existing machine heads is relatively fixed and rigid. Therefore, we propose a machine head assembly structure for machine tools. Utility Model Content

[0004] The purpose of this utility model is to provide a machine tool head assembly structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a machine tool head assembly structure, including a mounting profile, which is installed inside a housing. A bearing support is installed on one side of the mounting profile, and a lead screw is rotatably connected to the bearing support via a bearing. A motor base is installed on the top of the mounting profile at the bearing base, and a servo motor is installed inside the motor base. The output shaft end of the servo motor is connected to the lead screw via a coupling. A nut is threaded to the outer side of the lead screw, and a lifting plate is connected to the end of the nut. A connecting groove is provided on the surface of the lifting plate, and an adjustable nut sleeve is provided in the connecting groove. An opening is provided on the outer side of the nut sleeve, and the nut sleeve is clamped to the outer side of the nut. A profile spindle clamp is installed on the surface of the lifting plate, and an electric spindle is clamped inside the profile spindle clamp. A dust collection hood is connected to the bottom end of the electric spindle. Cylinders are symmetrically installed on the outer side of the profile spindle clamp, and push plates are fixedly connected to the piston rod ends of the cylinders. Both push plates are connected to the dust collection hoods.

[0006] Preferably, the outer side of the profile spindle sleeve is provided with symmetrical and equidistant mounting holes, and the mounting plate and the lifting plate are fixedly connected by screws.

[0007] Preferably, the top of the nut sleeve is provided with vertical screw holes at equal intervals, the top of the lifting plate is provided with adjustment holes at equal intervals, and the adjustment holes cooperate with the adjustment holes on the surface of the nut sleeve. The nut sleeve and the lifting plate are connected by screws.

[0008] Preferably, the mounting profile has a slide rail symmetrically and integrally arranged on the surface of the mounting profile outside the lead screw, and a sensor is installed on the surface of the mounting profile outside the slide rail. The lifting plate has sliding blocks symmetrically arranged on one side of the lead screw, and the sliding blocks at both ends of the lifting plate are slidably connected to the two slide rail surfaces. The top of the mounting profile has a first vertical vent at the position of the slide rail, and the top of the mounting profile has a second vertical vent in the middle of the area between the two first vents.

[0009] Preferably, the mounting profile has two protrusions integrally formed at both ends on the side away from the back of the lead screw.

[0010] Preferably, the mounting profile, lifting plate, connecting groove, and profile spindle sleeve are all made of aluminum profile.

[0011] Preferably, the outer side of the profile spindle sleeve is symmetrically and equidistantly provided with bolt holes for mounting the cylinder, and the cylinder is fixedly connected to the profile spindle sleeve by bolts.

[0012] Preferably, the components installed on both sides of the mounting profile are located inside the same housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model achieves micron-level precision lifting control by using a servo motor to drive a lead screw in conjunction with an adjustable nut sleeve structure. The telescopic adjustment design of the nut sleeve can eliminate the installation gap caused by part tolerances. Combined with the slide rail transmission and lightweight aluminum alloy profile structure, it can ensure smooth machine head operation and high repeatability positioning accuracy.

[0015] 2. The cylinders symmetrically arranged on the outside of the profile spindle sleeve of this utility model can directly control the lifting and lowering of the dust collection hood. During processing, it is close to the workpiece to enhance the dust collection effect. When changing tools, it is raised to avoid interference. The integrated aluminum profile structure is lightweight. At the same time, the angle of the dust collection hood can be finely adjusted through the linkage of the push plate to adapt to diverse processing needs.

[0016] 3. This utility model allows the nut sleeve to be directly installed and removed from the outside of the screw nut without disassembling the screw rod and bearing seat by opening an opening on the outside of the nut sleeve, saving installation and removal time and increasing ease of use.

[0017] 4. This utility model uses standardized aluminum profiles and pre-drilled holes for installation, which can achieve quick assembly and component replacement. The internal partition layout of the shell, combined with the vacuum port design, can save aluminum consumption costs, reduce weight, and improve strength and prevent deformation after vacuuming.

[0018] 5. All moving parts of this utility model are enclosed in the same housing, which has the functions of dustproof, noise reduction and anti-accidental touch. The lightweight aluminum profile and hollow structure significantly reduce the size of the equipment while ensuring rigidity, making it suitable for compact machine tool layouts and meeting the needs of modern automated production. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the profile spindle sleeve structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the lifting plate structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the connection structure between the nut sleeve and the lifting plate of this utility model;

[0023] Figure 5 This is a schematic diagram of the installation profile structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the boss structure of this utility model.

[0025] In the diagram: 1. Mounting profile; 2. Motor mount; 3. Servo motor; 4. Lead screw; 5. Lifting plate; 6. Connecting groove; 7. Nut sleeve; 8. Profile spindle sleeve; 9. Cylinder; 10. Push plate; 11. Electric spindle; 12. Dust hood; 13. Adjustment hole; 14. Sensor; 15. Slide rail; 16. First vacuum port; 17. Boss; 18. Second vacuum port; 19. Mounting hole. Detailed Implementation

[0026] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 and Figure 2This utility model provides a technical solution: a machine tool head assembly structure, including a mounting profile 1, which is installed inside a housing. A bearing support is installed on one side of the mounting profile 1, and a lead screw 4 is rotatably connected to the bearing support through a bearing. A motor base 2 is installed on the top of the mounting profile 1 at the bearing base, and a servo motor 3 is installed inside the motor base 2. The output shaft end of the servo motor 3 is connected to the lead screw 4 through a coupling. A nut is threaded on the outside of the lead screw 4, and a lifting plate 5 is connected to the outside of the nut. A connecting groove 6 is opened on the surface of the lifting plate 5, and an adjustable nut sleeve 7 is provided in the connecting groove 6.

[0028] The nut sleeve 7 has an opening on its outer side, and the nut sleeve 7 is clamped on the outside of the nut. The profile spindle clamp 8 is installed on the surface of the lifting plate 5, and the electric spindle 11 is clamped inside the profile spindle clamp 8. The bottom end of the electric spindle 11 is connected to the dust suction hood 12. Cylinders 9 are symmetrically installed on the outer side of the profile spindle clamp 8. The piston rod end of the cylinder 9 is fixedly connected to the push plate 10, and both push plates 10 are connected to the dust suction hood 12.

[0029] It should be noted that the unique design of the profile spindle sleeve 8 allows the cylinder 9 to be installed on its outer side. The cylinder 9 can control the lifting and lowering of the dust collection hood 12, making it convenient to control the dust collection effect. By opening the nut sleeve 7 on the outer side, the nut sleeve 7 can be directly installed and removed on the outer side of the nut of the screw 4 without disassembling the lead screw 4 and bearing support, saving the installation and removal time of the nut sleeve 7.

[0030] Please see Figure 2 The profile spindle sleeve 8 has symmetrical and equidistant mounting holes 19 on its outer side, and the profile spindle sleeve 8 is fixed to the lifting plate 5 by screws.

[0031] It should be noted that the profile spindle sleeve 8 is provided with mounting holes 19, which facilitates the connection between the profile spindle sleeve 8 and the lifting plate 5 by screws.

[0032] Please see Figure 3 and Figure 4 The top of the nut sleeve 7 is provided with vertical screw holes at equal intervals, and the top of the lifting plate 5 is provided with adjustment holes 13 at equal intervals. The adjustment holes 13 are matched with the adjustment holes 13 on the surface of the nut sleeve 7. The nut sleeve 7 and the lifting plate 5 are connected by screws.

[0033] It should be noted that the profile spindle sleeve 8 is fixedly installed on the surface of the lifting plate 5. The device can drive the lead screw 4 to rotate by controlling the servo motor 3. The rotation of the lead screw 4 realizes the lifting and lowering of the slider on its outer side. The slider is connected to the nut sleeve 7, and the nut sleeve 7 is connected to the lifting plate 5. The nut sleeve 7 is telescopically connected inside the lifting plate 5. When one end of the nut sleeve 7 passes through the connecting groove 6 and is slightly adjusted toward the profile spindle sleeve 8, the nut sleeve 7 can tighten the nut on the outer side of the lead screw 4, which can eliminate transmission backlash. When the nut sleeve 7 is slightly adjusted toward the position of the lead screw 4, it can push the slider on the outer side of the lead screw 4, so that the slider presses against the lead screw 4, thereby enhancing transmission rigidity and preventing loosening.

[0034] Please see Figure 5 and Figure 6 The mounting profile 1 has a slide rail 15 symmetrically and integrally arranged on the surface of the screw 4. A sensor 14 is installed on the surface of the mounting profile 1 on the outside of the slide rail 15. The lifting plate 5 has sliding blocks symmetrically arranged on one side of the screw 4. The sliding blocks at both ends of the lifting plate 5 are slidably connected to the surfaces of the two slide rails 15. The top of the mounting profile 1 is provided with a first vertical vent 16 at the position of the slide rail 15. The top of the mounting profile 1 is provided with a second vertical vent 18 in the middle of the area between the two first vents 16.

[0035] It should be noted that the mounting profile 1 is equipped with a sensor 14. The sensor 14 is used for the proximity switch to return to zero (return to mechanical coordinates) and can also prevent collisions caused by exceeding the travel limit. By symmetrically opening two first evacuation ports 16 in the vertical direction inside the mounting profile 1, and opening a second evacuation port 18 in the vertical direction at the top of the mounting profile 1 in the middle of the area between the two first evacuation ports 16, the design of the first evacuation ports 16 and the second evacuation ports 18 can save aluminum consumption costs, reduce weight, and the mounting profile 1 has better strength and is not easy to deform after evacuation.

[0036] Please see Figure 6 The mounting profile 1 has two protrusions 17 integrally provided at both ends on the side away from the back of the lead screw 4.

[0037] It should be noted that the protrusion 17 enhances the support and stability of the mounting profile 1.

[0038] Please see Figure 1 The mounting profile 1, lifting plate 5, connecting groove 6, and profile spindle sleeve 8 are all made of aluminum profiles.

[0039] It should be noted that aluminum profiles have a low density, which can significantly reduce the overall weight of the head while maintaining rigidity. This reduces the load on the X and Y axes, making high-speed operation of the X and Y axes more stable and smoother, greatly improving the acceleration of the X and Y axes, and enhancing dynamic response speed.

[0040] Please see Figure 2 The outer side of the profile spindle sleeve 8 is symmetrically and equidistantly provided with bolt holes for mounting the cylinder 9. The cylinder 9 and the profile spindle sleeve 8 are fixedly connected by bolts.

[0041] It should be noted that the outer side of the profile spindle sleeve 8 is provided with bolt holes for mounting the cylinder 9, which facilitates the installation of the cylinder 9. The bolt holes are symmetrically arranged along the circumference or both sides of the profile spindle sleeve 8 to ensure that the force applied by the cylinder 9 is evenly transmitted and to avoid uneven load.

[0042] Please see Figure 1 The components installed on both sides of the mounting profile 1 are all located inside the same housing.

[0043] It should be noted that all components of the entire machine head are located inside the same mounting housing, making the overall structure of the device compact, reducing external interference, avoiding the risk of accidental contact by personnel, and complying with mechanical safety standards.

[0044] Working principle: The servo motor 3 is fixedly mounted on the motor base 2, and its output shaft is fastened to the lead screw 4 through a coupling. When the servo motor 3 works, it drives the lead screw 4 to rotate. The nut on the outside of the lead screw 4 moves up and down through threaded engagement. The nut is fixedly connected to the nut sleeve 7. Since the nut sleeve 7 is embedded in the connecting groove 6 of the lifting plate 5, the lifting movement of the nut directly drives the entire lifting plate 5 to move. The nut sleeve 7 can be adjusted in the connecting groove 6. When the nut sleeve 7 is slightly adjusted towards the profile spindle sleeve 8, the nut on the outside of the lead screw 4 can be tightened, eliminating zero friction. The installation gap is caused by the workmanship of the parts; conversely, if it is slightly adjusted in the direction of the lead screw 4, the nut can be pushed to tighten the lead screw 4, enhance the transmission rigidity, and prevent loosening. The nut sleeve 7 and the lifting plate 5 are provided with matching adjustment holes 13. The adjusted position can be locked by fixing with screws. The cylinders 9 symmetrically arranged on the outside of the profile spindle sleeve 8 act on the dust collection hood 12 through the push plate 10 to achieve the dust collection effect. The mounting profile 1 is provided with a sensor 14. The sensor 14 is set for the proximity switch to return to zero (return to mechanical coordinates) and can also prevent collisions caused by exceeding the stroke.

[0045] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machine tool head assembly structure, characterized in that, The system includes a mounting profile (1) installed inside a housing. A bearing support is installed on one side of the mounting profile (1), and a lead screw (4) is rotatably connected to the bearing support via a bearing. A motor mount (2) is installed at the top of the mounting profile (1), and a servo motor (3) is installed inside the motor mount (2). The output shaft of the servo motor (3) is connected to the lead screw (4) via a coupling. A nut is threaded onto the outer side of the lead screw (4), and a lifting plate (5) is connected to the outside of the nut. A connecting groove (6) is provided on the surface of the lifting plate (5). Furthermore, a telescopically adjustable nut sleeve (7) is provided in the connecting groove (6). An opening is provided on the outer side of the nut sleeve (7). The nut sleeve (7) is clamped on the outer side of the nut. A profile spindle clamp (8) is installed on the surface of the lifting plate (5). An electric spindle (11) is clamped in the profile spindle clamp (8). A dust collection hood (12) is connected to the bottom end of the electric spindle (11). Cylinders (9) are symmetrically installed on the outer side of the profile spindle clamp (8). A push plate (10) is fixed to the end of the piston rod of the cylinder (9). Both push plates (10) are connected to the dust collection hood (12).

2. The machine tool head assembly structure according to claim 1, characterized in that: The profile spindle sleeve (8) has symmetrical and equidistant mounting holes (19) on its outer side, and the profile spindle sleeve (8) is fixed to the lifting plate (5) by screws.

3. The machine tool head assembly structure according to claim 1, characterized in that: The top of the nut sleeve (7) is provided with vertical screw holes at equal intervals, and the top of the lifting plate (5) is provided with adjustment holes (13) at equal intervals. The adjustment holes (13) are matched with the adjustment holes (13) on the surface of the nut sleeve (7). The nut sleeve (7) and the lifting plate (5) are connected by screws.

4. The machine tool head assembly structure according to claim 1, characterized in that: The mounting profile (1) has a slide rail (15) symmetrically and integrally arranged on the surface of the lead screw (4) and a sensor (14) is installed on the surface of the mounting profile (1) on the outside of the slide rail (15). The lifting plate (5) has sliding blocks symmetrically arranged on one side of the lead screw (4), and the sliding blocks at both ends of the lifting plate (5) are slidably connected to the surfaces of the two slide rails (15). The top of the mounting profile (1) is provided with a first vertical vent (16) at the position of the slide rail (15), and a second vertical vent (18) is provided in the middle of the area between the two first vents (16) on the top of the mounting profile (1).

5. The machine tool head assembly structure according to claim 1, characterized in that: The mounting profile (1) has two protrusions (17) integrally provided at both ends on the side away from the lead screw (4).

6. The machine tool head assembly structure according to claim 1, characterized in that: The mounting profile (1), lifting plate (5), connecting groove (6) and profile spindle sleeve (8) are all made of aluminum profiles.

7. The machine tool head assembly structure according to claim 1, characterized in that: The outer side of the profile spindle sleeve (8) is symmetrically and equidistantly provided with bolt holes for mounting cylinders (9), and the cylinders (9) and the profile spindle sleeve (8) are fixedly connected by bolts.

8. The machine tool head assembly structure according to claim 1, characterized in that: The components installed on both sides of the mounting profile (1) are all located inside the same housing.

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