Ball screw driving structure of numerical control machine tool

Abstract

The utility model discloses a ball screw driving structure of a numerical control machine tool, which belongs to the technical field of machine manufacturing, and comprises a mounting block, the other side of the mounting block is fixedly connected with a fixed block, the tops of two support strips are fixedly connected with connecting strips, and the connecting strips are fixedly connected with a connecting rod. A supporting block is installed at the other ends of the two connecting strips, connecting screws corresponding to the supporting strips and the connecting strips are installed on one side of the fixing block, a lead screw is rotationally connected between the fixing block and the supporting block, two sliding blocks are slidably connected to the outer wall of the lead screw, and balls are installed between the lead screw and the fixing block. The screw rod has small friction loss and abrasion through the balls, so that the screw rod has long service life, the maintenance cost and the downtime of equipment can be reduced, high-precision position control and motion control can be provided, the screw rod is suitable for working scenes needing high-precision machining, and the product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, in particular to a ball screw driving structure for a numerically controlled machine tool. Background Art

[0002] With the continuous development of the manufacturing industry and the advancement of technology, CNC machine tools have become an indispensable key equipment in the modern manufacturing industry. In the drive system of CNC machine tools, the ball screw drive structure has become the first choice due to its high precision, high efficiency and stability. The ball screw drive structure is a mechanism that realizes the conversion motion through the rolling friction between the ball and the screw thread. As one of the core components of modern CNC machine tools, the ball screw drive structure plays a vital role in improving processing accuracy, improving production efficiency and reducing energy consumption.

[0003] In traditional screw drive structures, ball assemblies are usually not installed on the screw. Although this does not affect the normal operation of the screw, when faced with high-precision processing, this type of screw drive structure lacks relevant ball assemblies, which leads to friction during the operation of the screw. After long-term high-intensity operation, this type of screw drive will deviate and the internal parts will need to be replaced, which will reduce processing efficiency and fail to guarantee product quality.

[0004] Therefore, there is an urgent need to provide a CNC machine tool ball screw drive structure to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the disadvantages of the prior art and provide a ball screw drive structure for a numerically controlled machine tool.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a CNC machine tool ball screw drive structure, including a mounting block, one side of the mounting block is provided with a mounting hole, the other side of the mounting block is fixedly connected with a fixing block, and a bearing is installed inside the fixing block;

[0007] One side of the fixed block is fixedly connected to a support bar near the bottom, the tops of the two support bars are fixedly connected to connecting bars, the other ends of the two connecting bars are installed with a support block, the interior of the support block is provided with a support hole, one side of the fixed block is installed with connecting screws corresponding to the support bar and the connecting bar, a screw rod is rotatably connected between the fixed block and the support block, and the outer wall of the screw rod is slidably connected to two sliding blocks.

[0008] The utility model is further configured as follows: a servo motor is installed inside the mounting hole, and an output end of the servo motor is connected to a screw rod.

[0009] Through the above technical solution, the servo motor can provide high-precision position control and speed control. By connecting with the lead screw, it can achieve precise driving of the lead screw, thereby achieving high-precision processing or positioning. The servo motor usually has a high energy conversion efficiency, converting electrical energy into mechanical energy. By connecting with the lead screw, it can effectively convert electrical energy into linear motion, thereby achieving efficient processing or motion.

[0010] The utility model is further configured as follows: the inner wall of the bearing is in contact with the outer wall of the screw rod.

[0011] Through the above technical solution, when the inner wall of the bearing fits with the outer wall of the screw, the gap between them can be reduced, thereby reducing friction and wear, which helps to extend the service life of the bearing and the screw and improve the reliability and stability of the machine tool. The inner wall of the bearing fitting the outer wall of the screw can ensure the stability and precision of the screw during movement. The sealing and fit between them can reduce vibration and errors, thereby improving the processing accuracy and surface quality.

[0012] The utility model is further configured as follows: the support bars and the connecting bars are both installed between the fixing block and the support block.

[0013] Through the above technical solution, the installation of the support bars and the connecting bars can increase the stability and rigidity of the entire structure. As connecting elements, they can effectively transmit and distribute the force between the fixed block and the support block, making the entire structure more solid and stable.

[0014] The utility model is further configured as follows: a support piece corresponding to the bearing is installed inside the support hole.

[0015] Through the above technical solution, by installing support members, additional support and fixation can be provided for the bearings, thereby enhancing the stability and reliability of the bearings at work, which helps to reduce the vibration and deformation of the bearings under high-speed operation or high-load conditions and protect the bearings from damage.

[0016] The utility model is further configured as follows: the screw rod and the slider are connected in a spiral manner.

[0017] Through the above technical solution, the spiral connection can effectively transmit torque. When the screw rod is subjected to torque, the spiral connection can transmit the torque to the slider, so that it can smoothly achieve linear motion without sliding or slipping.

[0018] The utility model is further configured as follows: the inner end of the connecting strip is provided with a limiting sliding groove corresponding to the sliding block.

[0019] Through the above technical solution, the position of the slider can be accurately controlled through the limiting slide groove. When the slider moves in the limiting slide groove, its position is restricted, which can ensure that the slider stays at the specified position, thereby improving the working accuracy and stability of the system.

[0020] The beneficial effects of the utility model are as follows:

[0021] 1. The utility model installs a ball between the screw and the fixed block, so that the screw has less friction loss and wear, and thus has a longer service life, can reduce the maintenance cost and downtime of the equipment, and can provide high-precision position control and motion control. It is suitable for work scenarios that require high-precision processing and ensures product quality.

[0022] 2. The utility model provides power for the device by installing a servo motor. The servo motor can provide high-precision position control and speed control. By connecting with the lead screw, it can realize precise driving of the lead screw, thereby realizing high-precision processing or positioning. The servo motor usually has a high energy conversion efficiency, converting electrical energy into mechanical energy. By connecting with the lead screw, it can effectively convert electrical energy into linear motion, thereby realizing efficient processing or motion, improving processing efficiency while also improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the utility model;

[0024] Figure 2 for Figure 1 A transverse cross-sectional view of

[0025] Figure 3 It is a structural schematic diagram of the screw rod of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the bearing of the utility model;

[0027] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0028] In the figure: 1. Mounting block; 2. Mounting hole; 3. Fixing block; 4. Bearing; 5. Support bar; 6. Connecting bar; 7. Support block; 8. Support hole; 9. Connecting screw; 10. Screw rod; 11. Slider. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0030] See also Figure 1 and Figure 2 A ball screw drive structure for a CNC machine tool includes a mounting block 1, a mounting hole 2 is opened on one side of the mounting block 1, a servo motor is installed inside the mounting hole 2, and the output end of the servo motor is connected to the screw 10. The servo motor can provide high-precision position control and speed control. By connecting with the screw 10, the screw 10 can be accurately driven, thereby achieving high-precision processing or positioning. The servo motor usually has a high energy conversion efficiency, converting electrical energy into mechanical energy. By connecting with the screw 10, the electrical energy can be effectively converted into linear motion, thereby achieving efficient processing or motion. A fixed block 3 is fixedly connected to the other side of the mounting block 1.

[0031] like Figure 1 , Figure 3 - Figure 5As shown, a bearing 4 is installed inside the fixed block 3, and the inner wall of the bearing 4 fits the outer wall of the screw rod 10. When the inner wall of the bearing 4 fits the outer wall of the screw rod 10, the gap between them can be reduced, thereby reducing friction and wear, which helps to extend the service life of the bearing 4 and the screw rod 10 and improve the reliability and stability of the machine tool. The inner wall of the bearing 4 that fits the outer wall of the screw rod 10 can ensure the stability and accuracy of the screw rod 10 during movement. The sealing and fit between them can reduce vibration and error, thereby improving the processing accuracy and surface quality. , one side of the fixed block 3 is fixedly connected with a support bar 5 near the bottom, and the support bar 5 and the connecting bar 6 are installed between the fixed block 3 and the support block 7. The installation of the support bar 5 and the connecting bar 6 can increase the stability and rigidity of the entire structure. As connecting elements, they can effectively transmit and distribute the force between the fixed block 3 and the support block 7, making the entire structure more firm and stable. The tops of the two support bars 5 are fixedly connected with the connecting bar 6, and the other ends of the two connecting bars 6 are installed with support blocks 7. The support block 7 has a support hole 8 opened inside. The support hole 8 A support piece corresponding to the bearing 4 is installed inside the bearing 4. By installing the support piece, additional support and fixation can be provided for the bearing 4, and the stability and reliability of the bearing 4 during work can be enhanced, which helps to reduce the vibration and deformation of the bearing 4 under high-speed operation or high-load conditions, and protect the bearing 4 from damage. A connecting screw 9 corresponding to the support bar 5 and the connecting bar 6 is installed on one side of the fixed block 3. A screw 10 is rotatably connected between the fixed block 3 and the support block 7. The screw 10 is connected to the slider 11 in a spiral manner. The spiral connection can effectively transmit torque. When the screw 10 is subjected to torque, the spiral connection can transmit the torque to the slider 11, so that it can smoothly achieve linear motion without sliding or slipping. Two sliders 11 are slidably connected to the outer wall of the screw 10. A limiting slide groove corresponding to the slider 11 is opened at the inner end of the connecting bar 6. The position of the slider 11 can be accurately controlled by the limiting slide groove. When the slider 11 moves in the limiting slide groove, its position is restricted, which can ensure that the slider 11 stays at the specified position, thereby improving the working accuracy and stability of the system.

[0032] When the utility model is in use, the staff needs to install the prepared bearing 4 and the matching support into the specified position, fix the installed fixing block 3 to the specified position of the installation block 1, install the screw rod 10 with the slider 11 through the bearing 4 into the inside of the fixing block 3, and install the support block 7 at the other end of the screw rod 10 to ensure that the rotation of the screw rod 10 between the fixing block 3 and the support block 7 will not be affected. After completing the installation of the fixing block 3 and the support block 7, the two support bars 5 can be installed between the fixing block 3 and the support block 7, and then the connecting bar 6 can be installed on the two support bars 5. When installing the connecting bar 6, it is also necessary to pay attention to the connection bar 6. The limiting groove of the part fits in the corresponding area of ​​the slider 11 to ensure that the connecting strip 6 will not affect the sliding of the slider 11. After completing the installation work, you can use multiple connecting screws 9 to fix the support strip 5 and the connecting strip 6 to the fixed block 3 and the support block 7, so that the entire mechanism becomes a whole. After completing the overall installation work, the servo motor is finally connected to the screw rod 10 through the mounting hole 2. The screw rod 10 is driven to rotate by the operation of the servo motor. When the screw rod 10 rotates, the two sliders 11 on the screw rod 10 will slide in the specified direction. The movement trajectory of the slider 11 can be adjusted by adjusting the speed and direction of the servo motor.

[0033] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A ball screw drive structure for a CNC machine tool, comprising a mounting block (1), characterized in that: A mounting hole (2) is provided on one side of the mounting block (1); a fixing block (3) is fixedly connected to the other side of the mounting block (1); a bearing (4) is installed inside the fixing block (3); One side of the fixed block (3) is fixedly connected to a support bar (5) at the bottom, the tops of the two support bars (5) are fixedly connected to a connecting bar (6), the other ends of the two connecting bars (6) are mounted with a support block (7), a support hole (8) is provided inside the support block (7), one side of the fixed block (3) is mounted with a connecting screw (9) corresponding to the support bar (5) and the connecting bar (6), a screw rod (10) is rotatably connected between the fixed block (3) and the support block (7), and the outer wall of the screw rod (10) is slidably connected to two sliding blocks (11).

2. The ball screw drive structure for a CNC machine tool according to claim 1, characterized in that: A servo motor is installed inside the mounting hole (2), and the output end of the servo motor is connected to the screw rod (10).

3. The ball screw drive structure for a CNC machine tool according to claim 1, characterized in that: The inner wall of the bearing (4) fits the outer wall of the screw rod (10).

4. The ball screw drive structure for a CNC machine tool according to claim 1, characterized in that: The support bar (5) and the connecting bar (6) are both installed between the fixing block (3) and the support block (7).

5. The ball screw drive structure for a CNC machine tool according to claim 1, characterized in that: A support member corresponding to the bearing (4) is installed inside the support hole (8).

6. The ball screw drive structure for a CNC machine tool according to claim 1, characterized in that: The screw rod (10) and the slider (11) are connected in a spiral manner.

7. The ball screw drive structure for a CNC machine tool according to claim 6, characterized in that: The inner end of the connecting strip (6) is provided with a limiting sliding groove corresponding to the sliding block (11).

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