A moving device for center frame of CNC machine tool

Abstract

The utility model relates to the technical field of numerical control machine tools, and discloses a moving device for a center frame of a numerical control machine tool, including a slide rail, a slider slidably connected in the slide rail, a connecting seat fixedly connected to the slider, a fixed seat arranged above the connecting seat, a hydraulic center frame installed on the fixed seat, and a lifting component arranged on the slider for lifting and moving the fixed seat. It can make the connecting seat drive the slider to move in the slide rail through the moving component, and simultaneously make the fixed seat drive the block to slide in the slide groove through the linkage rod, so as to adjust the position of the hydraulic center frame on the slide rail, and also adjust the height of the fixed seat on the slide rail through the lifting component, so as to adjust the use height of the hydraulic center frame, so as to facilitate workers to adjust the coaxiality of the workpiece, and can also drive the block to be inserted into the inside of the limit groove during the rising of the fixed seat, so as to limit the moving connecting seat and ensure the stability of the moving connecting seat.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a center frame moving device for numerical control machine tools. Background Art

[0002] The center rest is an important component of CNC machine tools. It is mainly used to provide radial support for the workpiece during machining, especially for the machining of slender shaft parts. When the length and diameter ratio of the workpiece is large (L / d>25), the rigidity of the workpiece itself will deteriorate, and it is easy to bend and vibrate during the turning process, which will affect the cylindricity and surface roughness of the workpiece. In order to reduce this effect, the use of the center rest becomes particularly important.

[0003] The Chinese patent with publication number CN212600264U discloses a lathe center frame that is easy to move. It: facilitates the locking and fixing of the center frame through a slidable locking assembly, and facilitates the movement of the bulky center frame through a fixed roller group and a movable roller group, which saves time and effort for the staff to operate and improves work efficiency.

[0004] This device enables workers to push the center frame on the lathe through a moving roller group, and fix the moved center frame with a locking assembly. However, this movement method requires workers to manually adjust the position, the adjustment efficiency is slow, and the height of the center frame itself is difficult to adjust, and the adjustment of the coaxiality of the workpiece is slow. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a CNC machine tool center frame moving device, which effectively solves the problems that the existing center frame movement relies on workers to manually adjust the position, the adjustment efficiency is slow, the height of the center frame itself is difficult to adjust, and the coaxiality adjustment of the workpiece is slow.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a moving device for a center frame of a CNC machine tool, comprising:

[0007] A slide rail is provided inside the slide rail and is slidably connected with a slider, a connecting seat is fixedly connected to the slider, a fixing seat is arranged above the connecting seat, and a hydraulic center frame is installed on the fixing seat.

[0008] The lifting component is arranged on the slide block and is used for lifting and moving the fixing seat.

[0009] The moving component is arranged on one side of the slide rail and is used for electrically controlling the movement of the connecting seat.

[0010] The limit assembly includes a control box installed on the slide rail, the control box is provided with a movable groove, a linkage rod is slidably connected in the movable groove, and the linkage rod is fixedly connected to the fixed seat, the control box is also provided with a slide groove and a limit groove, and the slide groove is connected with the limit groove and the movable groove, and a clamping block is fixedly connected to the linkage rod.

[0011] Furthermore, the moving component includes a control seat installed on the slide rail, a bidirectional motor is installed on the control seat, a guide groove is opened on the control seat, a screw rod is installed on the output shaft of the bidirectional motor, and the screw rod is threadedly connected in the guide groove, a moving block is threadedly connected on the screw rod, and the top of the moving block is fixedly connected to the connecting seat.

[0012] Furthermore, a guide groove is provided on the slide rail, a guide block is slidably connected in the guide groove, and the top end of the guide block is fixedly connected to the connecting seat.

[0013] Furthermore, the lifting assembly includes a mounting groove opened on the slide block, an electric push rod is installed in the mounting groove, and the telescopic end of the electric push rod is fixedly connected to the fixing seat.

[0014] Furthermore, guide shafts are fixedly connected to the four corners of the upper surface of the connecting seat, a storage tube is slidably connected to the guide shaft, and the top end of the storage tube is fixedly connected to the fixed seat.

[0015] The beneficial effects of the above technical solution are:

[0016] The utility model discloses the coordinated arrangement among the lifting assembly, the fixed seat, the connecting seat, the moving assembly and the limiting assembly. The moving assembly can make the connecting seat drive the sliding block to move in the sliding rail, and simultaneously make the fixed seat drive the clamping block to slide in the sliding groove through the linkage rod, so as to adjust the position of the hydraulic center frame on the sliding rail. The lifting assembly can also be used to adjust the height of the fixed seat on the sliding rail, thereby adjusting the use height of the hydraulic center frame, which is convenient for workers to adjust the coaxiality of the workpiece. The clamping block can also be driven to be inserted into the inside of the limiting groove during the rising of the fixed seat, so as to limit the moving connecting seat and ensure the stability of the connecting seat after movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The three-dimensional Figure 1 ;

[0018] Figure 2 The three-dimensional Figure 2 ;

[0019] Figure 3 It is a cross-sectional view of the utility model.

[0020] Figure numerals: 1. slide rail; 2. slider; 3. connecting seat; 4. mounting groove; 5. electric push rod; 6. fixed seat; 7. hydraulic center frame; 8. control box; 9. movable groove; 10. linkage rod; 11. block; 12. slide groove; 13. limit groove; 14. control seat; 15. bidirectional motor; 16. guide groove; 17. screw rod; 18. movable block; 19. guide groove; 20. guide block; 21. storage tube; 22. guide shaft. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods:

[0022] Reference Figure 1-3 A moving device for a center frame of a CNC machine tool comprises a slide rail 1, a lifting component, a moving component and a limiting component.

[0023] A slider 2 is slidably connected inside the slide rail 1. Both ends of the slide rail 1 are installed inside the machine tool. A connecting seat 3 is fixedly connected to the slider 2. A fixed seat 6 is arranged above the connecting seat 3. A hydraulic center frame 7 is installed on the fixed seat 6. The hydraulic center frame 7 is an existing structure. Its clamping jaws are controlled by hydraulic pressure to clamp and support cylindrical workpieces.

[0024] The lifting component is arranged on the slider 2, and is used for lifting and lowering the fixed seat 6. The lifting component includes a mounting groove 4 opened on the slider 2, and an electric push rod 5 is installed in the mounting groove 4. The telescopic end of the electric push rod 5 is fixedly connected to the fixed seat 6. There is a groove matching the mounting groove 4 on the connecting seat 3. The fixed seat 6 can be driven to move up and down by the telescopic end of the electric push rod 5, so as to adjust the height of the hydraulic center frame 7.

[0025] The four corners of the upper surface of the connecting seat 3 are fixedly connected with guide shafts 22, and a storage tube 21 is slidably connected to the guide shaft 22, and the top of the storage tube 21 is fixedly connected to the fixed seat 6. When the fixed seat 6 is raised and lowered, the guide shaft 22 and the storage tube 21 can guide and support the fixed seat 6 to improve the stability of the fixed seat 6.

[0026] The moving component is arranged on one side of the slide rail 1, and is used for electrically controlling the movement of the connecting seat 3. The moving component includes a control seat 14 installed on the slide rail 1, a bidirectional motor 15 is installed on the control seat 14, a guide groove 16 is opened on the control seat 14, a screw rod 17 is installed on the output shaft of the bidirectional motor 15, and the screw rod 17 is threadedly connected in the guide groove 16, a moving block 18 is threadedly connected to the screw rod 17, and the top end of the moving block 18 is fixedly connected to the connecting seat 3.

[0027] The control seat 14 can be added to one side of the slide rail 1 without making any changes to the original slide rail 1 on the machine tool. The output shaft of the bidirectional motor 15 drives the screw rod 17 to rotate, so that the moving block 18 can move in the guide groove 16 and then drive the connecting seat 3 to move, so that the position of the hydraulic center frame 7 on the connecting seat 3 can be adjusted.

[0028] A guide groove 19 is provided on the slide rail 1, and a guide block 20 is slidably connected in the guide groove 19, and the top of the guide block 20 is fixedly connected to the connecting seat 3. The guide block 20 and the guide groove 19 can guide the movement of the connecting seat 3 to ensure the stability of the connecting seat 3.

[0029] The limit assembly includes a control box 8 installed on the slide rail 1, a movable groove 9 is provided on the control box 8, a linkage rod 10 is slidably connected in the movable groove 9, and the linkage rod 10 is fixedly connected to the fixed seat 6, a slide groove 12 and a limit groove 13 are also provided on the control box 8, and the slide groove 12 is connected to the limit groove 13 and the movable groove 9, and a clamping block 11 is fixedly connected to the linkage rod 10.

[0030] When the position of the connecting seat 3 is adjusted, the hydraulic center frame 7 is in the lowest position, and the block 11 is located in the slide groove 12. The block 11 can be driven to slide in the slide groove 12 by the movement of the connecting seat 3. After the hydraulic center frame 7 rises and moves, the fixed seat 6 can drive the block 11 on the linkage rod 10 to be inserted into the inside of the limiting groove 13, thereby limiting the moving connecting seat 3 to avoid the position movement of the hydraulic center frame 7 on the connecting seat 3 during operation.

[0031] Working principle: When adjusting the position of the hydraulic center frame 7, the bidirectional motor 15 can be started, so that the output shaft of the bidirectional motor 15 drives the screw 17 to rotate, and the moving block 18 can move in the guide groove 16 and then drive the connecting seat 3 to move, so that the position of the hydraulic center frame 7 on the connecting seat 3 can be adjusted. At this time, the fixed seat 6 will also drive the linkage rod 10 to slide in the moving groove 9, and make the block 11 slide in the slide groove 12. When the hydraulic center frame 7 supports the workpiece, the electric push rod 5 is started to make the electric push rod 5 The telescopic end drives the fixed seat 6 to move upward, thereby adjusting the hydraulic center frame 7 to a suitable height. At this time, the fixed seat 6 will also drive the block 11 to be inserted into the inside of the limiting groove 13 to limit the moved connecting seat 3 to prevent the hydraulic center frame 7 on the connecting seat 3 from moving during work. The position and height of the hydraulic center frame 7 are adjusted by electronic control, and the position of the connecting seat 3 can be limited after the hydraulic center frame 7 is adjusted to prevent the hydraulic center frame 7 from being displaced when supporting the workpiece.

Claims

1. A center frame moving device for a CNC machine tool, characterized in that: include: A slide rail (1), wherein a slider (2) is slidably connected inside the slide rail (1), a connecting seat (3) is fixedly connected to the slider (2), a fixing seat (6) is arranged above the connecting seat (3), and a hydraulic center frame (7) is installed on the fixing seat (6); A lifting component is arranged on the slider (2) and is used to lift and move the fixed seat (6), the lifting component comprising a mounting groove (4) provided on the slider (2), an electric push rod (5) being installed in the mounting groove (4), and a telescopic end of the electric push rod (5) being fixedly connected to the fixed seat (6); A moving assembly is arranged on one side of the slide rail (1) and is used for electrically controlling the movement of the connecting seat (3). The moving assembly comprises a control seat (14) mounted on the slide rail (1), a bidirectional motor (15) is mounted on the control seat (14), a guide groove (16) is provided on the control seat (14), a screw rod (17) is mounted on the output shaft of the bidirectional motor (15), and the screw rod (17) is threadedly connected in the guide groove (16), a moving block (18) is threadedly connected on the screw rod (17), and the top end of the moving block (18) is fixedly connected to the connecting seat (3); The limit assembly comprises a control box (8) mounted on a slide rail (1), the control box (8) being provided with a movable groove (9), a linkage rod (10) being slidably connected in the movable groove (9), and the linkage rod (10) being fixedly connected to a fixed seat (6), the control box (8) being further provided with a slide groove (12) and a limit groove (13), and the slide groove (12) is connected to the limit groove (13) and the movable groove (9), and a clamping block (11) is fixedly connected to the linkage rod (10).

2. The center frame moving device of a CNC machine tool according to claim 1, characterized in that: The slide rail (1) is provided with a guide groove (19), a guide block (20) is slidably connected in the guide groove (19), and the top end of the guide block (20) is fixedly connected to the connecting seat (3).

3. The moving device for a center frame of a CNC machine tool according to claim 1, characterized in that: The four corners of the upper surface of the connection seat (3) are fixedly connected to guide shafts (22), a storage tube (21) is slidably connected to the guide shaft (22), and the top end of the storage tube (21) is fixedly connected to the fixed seat (6).

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