Rotating table structure of vertical milling lathe and machine tool

Abstract

The utility model discloses a rotary table structure of a vertical milling lathe, which belongs to the field of machine tools and comprises a rotary table component, a support component and a driving component, the rotary table component comprises a worktable, the worktable is rotatably mounted on the support component, the driving component comprises a motor, a motor support ring and a rotor fixing ring, and the motor comprises a motor stator and a motor rotor. The motor stator is installed on the supporting assembly through the motor supporting ring, the rotor fixing ring is installed on the motor rotor and connected with the workbench, and the motor rotor drives the rotor fixing ring and the workbench to rotate when rotating. The traditional mechanical gear transmission is cancelled, and the rotating table is directly driven by the torque motor to rotate, so that the rotating table can quickly realize continuous indexing of angles; the transmission device is compact in structure, easy to manufacture and convenient to operate, and main transmission is gapless, noiseless, efficient and high in reliability.

Description

Technical Field

[0001] The utility model relates to the field of machine tools, in particular to a vertical milling and lathe rotary table structure and a machine tool comprising the vertical milling and lathe rotary table structure. Background Art

[0002] The rotary table is the main functional component of the vertical milling machine, and its functional parameters and precision directly affect the processing capacity and precision of the machine tool. At present, the rotary table adopts mechanical gear transmission, so its structure is complex and difficult to manufacture. In addition, due to the existence of the mechanical transmission chain, the mechanical structure of the rotary table is prone to deformation when it completes the start, acceleration, reversal and parking movements. There is friction and reverse clearance between the transmission pairs, which leads to mechanical vibration and noise during the operation of the rotary table, which in turn affects the dynamic stiffness of the rotary table and cannot meet the high-precision requirements of the rotary table during operation. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, one of the purposes of the utility model is to provide a vertical milling and lathe rotary table structure which ensures high precision during the operation of the rotary table and has a compact and simple structure.

[0004] In order to overcome the deficiencies of the prior art, the second purpose of the utility model is to provide a machine tool with a compact and simple structure while ensuring high precision during the operation of the rotary table.

[0005] One of the purposes of the utility model is achieved by the following technical solution:

[0006] A rotary table structure of a vertical milling lathe includes a turntable assembly, a support assembly, and a drive assembly. The turntable assembly includes a worktable, and the worktable is rotatably mounted on the support assembly. The drive assembly includes a motor, a motor support ring, and a rotor fixing ring. The motor includes a motor stator and a motor rotor. The motor stator is mounted on the support assembly through the motor support ring. The rotor fixing ring is mounted on the motor rotor and connected to the worktable. When the motor rotor rotates, the rotor fixing ring and the worktable are driven to rotate.

[0007] Furthermore, the rotary table structure of the vertical milling machine also includes a clamping damping unit, which is arranged outside the table and is used to clamp and position the table.

[0008] Furthermore, the clamping damping unit includes two clamping blocks, the two clamping blocks clamp the workbench simultaneously, and the clamping forces of the two clamping blocks are provided by the oil cylinder and are equal and opposite.

[0009] Furthermore, the turntable assembly also includes a connecting disk, which is fixedly connected to the rotor fixing ring, and the workbench is installed on the connecting disk.

[0010] Furthermore, the clamping damping unit is arranged outside the connecting disk and is communicatively connected with the control system.

[0011] Furthermore, the rotary table structure of the vertical milling lathe also includes a circular grating, which is arranged on the supporting assembly and located below the worktable and is used to index the worktable.

[0012] Furthermore, the vertical milling and lathe rotary table structure also includes a cooling component, which includes a water cooler and an insulation ring. The water cooler is located on one side of the worktable, and the insulation ring is sleeved on the outside of the rotor fixing ring. The water cooler supplies water to the motor stator and the insulation ring.

[0013] Furthermore, the supporting assembly includes a base and a main shaft, the main shaft is vertically mounted on the base, and the driving assembly is arranged on the base and located outside the main shaft.

[0014] Furthermore, the vertical milling and lathe rotary table structure also includes an oil temperature cooling detection component, the support component also includes a spindle bearing, the spindle bearing is sleeved on the outside of the spindle, the oil temperature cooling detection component includes an oil cooler and a temperature sensor, the oil cooler is located on one side of the worktable, and is used to cool and lubricate the spindle bearing, the temperature sensor is arranged on the spindle bearing, and the temperature sensor is communicatively connected to the control system.

[0015] The second purpose of the utility model is achieved by the following technical solution:

[0016] A machine tool comprises any one of the above-mentioned vertical milling and lathe rotary table structures.

[0017] Compared with the prior art, the utility model vertical milling lathe rotary table structure includes a turntable assembly, a support assembly, and a drive assembly. The turntable assembly includes a worktable, and the worktable is rotatably mounted on the support assembly. The drive assembly includes a motor, a motor support ring, and a rotor fixing ring. The motor includes a motor stator and a motor rotor. The motor stator is mounted on the support assembly through the motor support ring. The rotor fixing ring is mounted on the motor rotor and connected to the worktable. When the motor rotor rotates, it drives the rotor fixing ring and the worktable to rotate. The present application eliminates the traditional mechanical gear transmission, and directly drives the rotary table to rotate with a torque motor so that it can quickly realize continuous angle division; the present application has a compact structure, simple manufacture, and convenient operation, and realizes a main drive without gap, noise, high efficiency, and high reliability; the present application uses a circular grating to accurately divide the worktable, and clamps the worktable through a clamping damping unit, so that the worktable will not be deformed when the clamping force is large, affecting the positioning accuracy, and is used to improve the stability of the closed-loop servo system of the worktable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the rotary table structure of the vertical milling lathe of the utility model;

[0019] Figure 2 for Figure 1 A top view of the rotary table structure of a vertical milling and lathe;

[0020] Figure 3 for Figure 1 Cross-sectional view of the rotary table structure of a vertical milling and lathe.

[0021] In the figure: 10, support assembly; 11, base; 12, main shaft; 13, main shaft bearing; 20, drive assembly; 21, motor; 211, motor stator; 212, motor rotor; 22, motor support ring; 23, rotor fixing ring; 30, turntable assembly; 31, workbench; 32, connecting plate; 40, circular grating; 50, clamping damping unit; 51, clamping block; 60, cooling assembly; 61, water cooler; 62, insulation ring; 70, oil temperature cooling detection assembly; 71, oil cooler; 72, temperature sensor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be another intermediate component through which it is fixed. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] Figure 1-Figure 3 The utility model discloses a rotary table structure of a vertical milling lathe, which comprises a support assembly 10 , a drive assembly 20 , a rotary table assembly 30 , a circular grating 40 and a clamping damping unit 50 .

[0026] In this embodiment:

[0027] The support assembly 10 includes a base 11, a main shaft 12, and a main shaft bearing 13. The main shaft 12 is fixedly mounted on the base 11, and the main shaft bearing 13 is sleeved on the main shaft 12. In this embodiment, the main shaft bearing 13 is a cross roller bearing.

[0028] The driving assembly 20 includes a motor 21, a motor support ring 22, and a rotor fixing ring 23. The motor 21 includes a motor stator 211 and a motor rotor 212. The motor stator 211 is fixed to the base 11 through the motor support ring 22. The rotor fixing ring 23 is installed on the motor rotor 212. When the motor rotor 212 rotates, the rotor fixing ring 23 is driven to rotate.

[0029] The turntable assembly 30 includes a worktable 31 and a connecting disk 32. The connecting disk 32 is located between the worktable 31 and the driving assembly 20 and is used to connect the worktable 31 and the rotor fixing ring 23. Specifically, the connecting disk 32 is fixedly connected to the rotor fixing ring 23. When the motor rotor 212 rotates, the rotor fixing ring 23, the connecting disk 32 and the worktable 31 are driven to rotate synchronously.

[0030] The circular grating 40 is mounted on the base 11 and is located below the workbench 31. The axial direction of the circular grating 40 is in the same straight line as the axial direction of the workbench 31, and is used to accurately divide the workbench 31. Since the circular grating 40 can perform reading control, it ensures that the workbench 31 can be rotated or divided at any angle, and can quickly achieve continuous angle division and has the characteristics of high transmission efficiency, low noise, compact structure, high precision, high reliability, and easy maintenance.

[0031] The clamping damping unit 50 is arranged outside the connection plate 32 and is connected to the control system for communication. When the workbench 31 rotates to a specified angle, the control system controls the clamping damping unit 50 to clamp and position the workbench 31, so that the workbench 31 stops rotating quickly and stably. In this embodiment, the clamping damping unit 50 is composed of two clamping blocks 51 that clamp the workbench 31 at the same time. The clamping forces of the two clamping blocks 51 are provided by the oil cylinder and are equal and opposite. Therefore, the workbench 31 will not be deformed when the clamping force is large, which affects the positioning accuracy, and is used to improve the stability of the closed-loop servo system of the workbench.

[0032] The cooling assembly 60 includes a water cooler 61 and an insulation ring 62 . The water cooler 61 is located on one side of the workbench 31 . The insulation ring 62 is sleeved on the outside of the rotor fixing ring 23 . The water cooler 61 supplies water to the motor stator 211 and the insulation ring 62 .

[0033] The oil temperature cooling detection component 70 includes an oil cooler 71 and a temperature sensor 72. The oil cooler 71 is located on the other side of the workbench 31 and is used to cool the spindle bearing 13 and supply oil for lubrication, with cooling as the main function and lubrication as the auxiliary function. The temperature sensor 72 is arranged on the spindle bearing 13. The temperature sensor 72 is communicated with the control system. When the temperature exceeds 60 degrees, an alarm is prompted, and the control system controls the drive component 20 to reduce the rotation speed of the workbench 31. When the temperature reaches 70 degrees, the control system controls the drive component 20 to stop driving, so that the workbench 31 stops rotating.

[0034] In the present application, the motor 21 directly drives the workbench 31 to rotate, eliminating the traditional mechanical gear transmission, and the torque motor directly drives the rotary workbench to rotate so that it can quickly realize continuous angle division; the present application has a compact structure, simple production, and easy operation, and realizes a main drive without gaps, noise, high efficiency, and high reliability; the present application uses a circular grating 40 to accurately divide the workbench 31, and clamps the workbench 31 through a clamping damping unit 50, so that the workbench 31 will not be deformed when the clamping force is large, affecting the positioning accuracy, which is used to improve the stability of the closed-loop servo system of the workbench.

[0035] The present application also relates to a machine tool including the above-mentioned vertical milling and lathe rotary table structure.

[0036] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, several modifications and improvements can be made, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the utility model, and all of them belong to the protection scope of the utility model.

Claims

1. A vertical milling and lathe rotary table structure, comprising a rotary table assembly and a support assembly, characterized in that: It also includes a driving assembly, the turntable assembly includes a workbench, the workbench is rotatably mounted on the supporting assembly, the driving assembly includes a motor, a motor supporting ring, and a rotor fixing ring, the motor includes a motor stator and a motor rotor, the motor stator is mounted on the supporting assembly through the motor supporting ring, the rotor fixing ring is mounted on the motor rotor and is connected to the workbench, and when the motor rotor rotates, the rotor fixing ring and the workbench are driven to rotate.

2. The rotary table structure of a vertical milling and lathe according to claim 1 is characterized in that: The turntable assembly also includes a connecting disk, which is fixedly connected to the rotor fixing ring, and the workbench is installed on the connecting disk.

3. The rotary table structure of a vertical milling lathe according to claim 2 is characterized in that: The vertical milling and lathe rotary table structure also includes a clamping and damping unit, which is arranged outside the table and is used to clamp and position the table.

4. The rotary table structure of a vertical milling and lathe according to claim 3 is characterized in that: The clamping damping unit comprises two clamping blocks, the two clamping blocks clamp the workbench simultaneously, and the clamping forces of the two clamping blocks are provided by oil cylinders and are equal and opposite.

5. The rotary table structure of a vertical milling and lathe according to claim 3 is characterized in that: The clamping damping unit is arranged outside the connecting disk and is in communication connection with a control system.

6. The rotary table structure of a vertical milling and lathe according to claim 1 is characterized in that: The vertical milling and lathe rotary table structure also includes a circular grating, which is arranged on the supporting assembly and below the table and is used to index the table.

7. The rotary table structure of a vertical milling and lathe according to claim 1 is characterized in that: The vertical milling and lathe rotary table structure also includes a cooling component, which includes a water cooler and an insulation ring. The water cooler is located on one side of the table, and the insulation ring is sleeved on the outside of the rotor fixing ring. The water cooler supplies water to the motor stator and the insulation ring.

8. The rotary table structure of a vertical milling and lathe according to claim 1 is characterized in that: The supporting assembly comprises a base and a main shaft, wherein the main shaft is vertically mounted on the base, and the driving assembly is arranged on the base and is located outside the main shaft.

9. The rotary table structure of a vertical milling and lathe according to claim 8 is characterized in that: The rotary table structure of the vertical milling and lathe also includes an oil temperature cooling detection component, and the support component also includes a spindle bearing, and the spindle bearing is sleeved on the outside of the spindle. The oil temperature cooling detection component includes an oil cooler and a temperature sensor. The oil cooler is located on one side of the worktable and is used to cool and lubricate the spindle bearing. The temperature sensor is arranged on the spindle bearing, and the temperature sensor is communicatively connected to the control system.

10. A machine tool, characterized in that: It comprises a vertical milling and lathe rotary table structure as described in any one of claims 1 to 9.

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