Numerical control lathe with ring piece cutting mechanism

Abstract

The invention relates to the technical field of numerical control lathes, in particular to a numerical control lathe with a ring part cutting mechanism, which comprises a workbench, one end of the workbench is rotatably connected with a rotating shaft through a bearing, the rotating shaft is driven by a motor, the rotating shaft is fixedly connected with a three-jaw chuck, and the three-jaw chuck fixes a ring part; a first telescopic rod is fixedly connected to the other end of the workbench, a fixing shaft is fixedly connected to the first telescopic rod, a plurality of sliding rods are fixedly connected to the fixing shaft, outer abutting plates and inner abutting plates are slidably arranged on the sliding rods, outer abutting blocks are fixedly connected to the outer abutting plates through outer connecting frames, and the inner abutting plates are fixedly connected to the outer abutting blocks through inner connecting frames. The multiple inner abutting plates are fixedly connected with inner abutting blocks through inner connecting frames, and each pair of outer abutting plates and the corresponding inner abutting plate are adjusted through an adjusting mechanism. The annular part cutting device has the advantages that deformation of the cutting position of an annular part is prevented, and the cutting effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of CNC lathes, and in particular to a CNC lathe with a ring cutting mechanism. Background Art

[0002] CNC lathe is a high-precision, high-efficiency automated machine tool that uses digital information to control the displacement of parts and tools for processing. When cutting some rings, due to the hollowness of the rings, the cutting force will exert pressure on the rings during cutting. The pressure on the rings will easily cause deformation at the cut. In addition, due to the friction between the tool and the rings during cutting, the heat will accumulate at the cut of the rings, which will cause the cut part to expand and contract, causing the cut part to deform, affecting the cutting effect of the rings. Summary of the invention

[0003] The purpose of the invention is to solve the problem in the prior art that the cut part will be deformed, which affects the cutting effect of the ring part, and to propose a CNC lathe with a ring cutting mechanism.

[0004] In order to achieve the above purpose, the invention adopts the following technical solutions: A CNC lathe with a ring cutting mechanism is designed, comprising a workbench, one end of which is rotatably connected to a rotating shaft through a bearing, the rotating shaft is driven by a motor, a three-jaw chuck is fixedly connected to the rotating shaft, and the three-jaw chuck fixes the ring; A first telescopic rod is fixedly connected to the other end of the workbench, a fixed shaft is fixedly connected to the first telescopic rod, a plurality of sliding rods are fixedly connected to the fixed shaft, an outer abutment plate and an inner abutment plate are slidably provided on the plurality of sliding rods, an outer abutment block is fixedly connected to the plurality of outer abutment plates via an outer connecting frame, an inner abutment block is fixedly connected to the plurality of inner abutment plates via an inner connecting frame, and each outer abutment plate and an inner abutment plate are adjusted by an adjusting mechanism; The fixed shaft is fixedly connected with a connecting frame, the connecting frame is fixedly connected with a second telescopic rod, the second telescopic rod is connected with a mounting column, and the mounting column is fixedly connected with a cutter.

[0005] Preferably, the outer abutment plate, the outer abutment block, the inner abutment block and the inner abutment plate are all made of wear-resistant materials.

[0006] Preferably, the adjusting mechanism includes a rotating disk threadedly connected to the fixed shaft, a slide groove is provided on the rotating disk, the slide groove is annular in structure, a plurality of sliders are slidably arranged in the slide groove, a plurality of sliders are fixedly connected to a moving block, two hinged rods are hinged at both ends of the plurality of moving blocks, the two hinged rods are respectively hinged to the outer abutment plate and the inner abutment plate, and the plurality of moving blocks are limited by a limiting mechanism.

[0007] Preferably, a gripping column is fixedly connected to the rotating disk.

[0008] Preferably, the limiting mechanism includes multiple limiting rods, multiple moving blocks are provided with limiting holes, multiple limiting holes are provided in the limiting rods, multiple limiting rods are fixedly connected with connecting ears, and multiple connecting ears are fixedly connected to the fixed shaft.

[0009] Preferably, the mounting post is rotatably connected to the second telescopic rod via a connecting bearing, a worm wheel is fixedly connected to the mounting post, the second telescopic rod is fixedly connected to a mounting frame, the mounting frame is rotatably connected to a worm via a bearing, the worm is meshed with the worm wheel, the worm is rotatably connected to a gear via a one-way bearing, the gear is meshed with a rack, a connecting rib is fixedly connected to the rack, a limit frame is sleeved on the connecting rib, the limit frame is fixedly connected to the mounting frame, a second magnet is fixedly connected to the connecting rib, the cross-sectional area of ​​the second magnet is larger than the cross-sectional area of ​​the limit frame, and an attraction mechanism is provided directly above the second magnet.

[0010] Preferably, the attraction mechanism includes a first magnet fixedly connected to the connecting frame, the opposing surfaces of the first magnet and the second magnet are opposite magnetic surfaces, a stopper fixedly connected to the second telescopic rod is provided between the first magnet and the second magnet, and a stop column is fixedly connected to the connecting edge.

[0011] Preferably, the connecting bearing is a thrust ball bearing.

[0012] The invention proposes a CNC lathe with a ring cutting mechanism, which has the beneficial effect of: adjusting the distance between every two outer abutment plates and the inner abutment plate by using an adjustment mechanism, making them contact with the inner and outer walls of the ring, supporting one side of the cutting gap, and simultaneously using an inner abutment block and an outer abutment block to support the inner and outer walls of one side of the cutting gap, thereby preventing the cutting part of the ring from being deformed due to the cutting force and the cutting temperature during cutting, thereby ensuring the cutting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of a CNC lathe with a ring cutting mechanism proposed for the invention; Figure 2 A three-dimensional diagram of a CNC lathe with a ring cutting mechanism proposed for the invention; Figure 3 A perspective view of a CNC lathe with a ring cutting mechanism proposed for the invention (with the ring hidden); Figure 4 A front view of a CNC lathe with a ring cutting mechanism proposed for the invention; Figure 5 A three-dimensional view of the fixed shaft portion of a CNC lathe with a ring cutting mechanism proposed for the invention; Figure 6 A CNC lathe with a ring cutting mechanism proposed for the invention Figure 5 A front view of Figure 7 The invention provides a schematic diagram of the structure of the worm wheel and worm part of a CNC lathe with a ring cutting mechanism.

[0014] In the figure: 1. workbench; 2. connecting frame; 3. first telescopic rod; 4. motor; 5. three-jaw chuck; 6. second telescopic rod; 7. fixed shaft; 8. external connecting frame; 9. external abutment plate; 10. external abutment block; 11. internal abutment block; 12. internal connecting frame; 13. internal abutment plate; 14. slide bar; 15. hinged rod; 16. limit rod; 17. moving block; 18. mounting column; 19. cutter; 20. rotating disk; 21. slide groove; 22. slider; 23. stop block; 24. first magnet; 25. second magnet; 26. mounting frame; 27. gear; 28. limit frame; 29. ​​worm wheel; 30. worm; 31. rotating shaft; 32. ring member; 33. connecting rib; 34. rack; 35. stop column. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all of the embodiments.

[0016] Example 1: Reference Figure 1-6 A CNC lathe with a ring cutting mechanism includes a workbench 1, one end of the workbench 1 is rotatably connected to a rotating shaft 31 through a bearing, the rotating shaft 31 is driven by a motor 4, the motor 4 is installed on the workbench 1, a three-jaw chuck 5 is fixedly connected to the rotating shaft 31, the three-jaw chuck 5 fixes the ring 32, the three-jaw chuck 5 is used to fix the ring, the motor 4 drives the rotating shaft 31 to rotate, thereby driving the three-jaw chuck 5 to rotate, so that the ring 32 rotates.

[0017] A first telescopic rod 3 is fixedly connected to the other end of the workbench 1, and a fixed shaft 7 is fixedly connected to the first telescopic rod 3. A plurality of sliding rods 14 are fixedly connected to the fixed shaft 7, and an outer abutment plate 9 and an inner abutment plate 13 are slidably arranged on the plurality of sliding rods 14. The plurality of outer abutment plates 9 are fixedly connected to an outer abutment block 10 through an outer connecting frame 8, and the plurality of inner abutment plates 13 are fixedly connected to an inner abutment block 11 through an inner connecting frame 12. Each pair of outer abutment plates 9 and inner abutment plates 13 are adjusted by an adjusting mechanism. The distance between every two outer abutment plates 9 and the inner abutment plates 13 is adjusted by the adjusting mechanism to contact the inner and outer walls of the annular member 32. At the same time, it is ensured that the annular member 32 can rotate to support one side of the cutting gap. At the same time, the inner abutment block 11 and the outer abutment block 10 are used to support the inner and outer walls of one side of the cutting gap, thereby preventing the cutting part of the annular member from being deformed due to the cutting force and the cutting temperature during cutting, thereby ensuring the cutting effect.

[0018] The fixed shaft 7 is fixedly connected to a connecting frame 2, the connecting frame 2 is fixedly connected to a second telescopic rod 6, the second telescopic rod 6 is connected to a mounting column 18, the mounting column 18 is fixedly connected to a cutter 19, and the position of the cutter 19 is changed by extending and retracting the second telescopic rod 6.

[0019] The outer abutment plate 9 , the outer abutment block 10 , the inner abutment block 11 , and the inner abutment plate 13 are all made of wear-resistant material, and the wear-resistant material is wear-resistant steel, which is beneficial to prolonging the service life.

[0020] The adjusting mechanism comprises a rotating disk 20 which is threadedly connected to the fixed shaft 7, a grasping column is fixedly connected to the rotating disk 20, a sliding groove 21 is provided on the rotating disk 20, and the sliding groove 21 is annular in structure. A plurality of sliders 22 are slidably arranged in the sliding groove 21, and a moving block 17 is fixedly connected to the plurality of sliders 22. Two hinged rods 15 are hinged at both ends of the plurality of moving blocks 17, and the two hinged rods 15 are hinged to the outer abutment plate 9 and the inner abutment plate 13 respectively. The plurality of moving blocks 17 are all limited by the limiting mechanism. By rotating the grasping column, the rotating disk 20 is driven to rotate, so as to adjust the position of the rotating disk 20 on the threaded section, and drive the moving block 17 to move, and change the inclination angle of the hinged rod 15, so as to make the outer abutment plate 9 and the inner abutment plate 13 move toward or away from each other, and abut or release the annular member 32. When the rotating disk 20 is rotated, the slider 22 is driven to slide in the sliding groove 21.

[0021] The limiting mechanism includes multiple limiting rods 16, and multiple moving blocks 17 are each provided with limiting holes. Limiting rods 16 are each arranged in the multiple limiting holes. Connecting ears are fixedly connected to the multiple limiting rods 16, and the multiple connecting ears are fixedly connected to the fixed shaft 7. The limiting rods 16 are used to limit the moving block 17, so that the moving block 17 can only move in the axial direction of the fixed shaft 7, thereby preventing the slider 22 from escaping from the slide groove 21.

[0022] Embodiment 2: In embodiment 1, after the cutting of the annular part is completed, due to the inertia of the motor 4 during rotation, the motor 4 will need to rotate for a period of time before it can slowly stop, causing the part fixed by the three-jaw chuck 5 to need to rotate for a period of time before it can stop. The part not fixed by the three-jaw chuck 5 has lost its power source, and at the same time, the friction between the outer abutment plate 9 and the inner abutment plate 13 causes the part not fixed by the three-jaw chuck 5 to stop quickly, causing the cutter 19 to contact the annular part fixed by the three-jaw chuck 5 for a longer period of time, while the annular part not fixed by the three-jaw chuck 5 will have a shorter contact. After long-term use, one side of the cutter 19 will wear more seriously than the other side, resulting in an uneven blade, affecting the cutting effect and service life.

[0023] Reference Figure 1-7 As another preferred embodiment of the invention, on the basis of embodiment 1, the mounting column 18 is rotatably connected to the second telescopic rod 6 through a connecting bearing, and the connecting bearing is a thrust ball bearing. By adopting a thrust ball bearing to carry the axial force load, a worm wheel 29 is fixedly connected to the mounting column 18, and a mounting frame 26 is fixedly connected to the second telescopic rod 6. A worm 30 is rotatably connected to the mounting frame 26 through a bearing, and the worm 30 is meshed with the worm wheel 29. Due to the self-locking property between the worm wheel 29 and the worm 30, by using the worm 30 as the active part, the cutter 19 is prevented from rotating due to the cutting force during cutting.

[0024] The worm 30 is rotatably connected with a gear 27 through a one-way bearing, and the gear 27 meshes with a rack 34. The rack 34 is fixedly connected with a connecting rib 33, and a limiting frame 28 is sleeved on the connecting rib 33. The limiting frame 28 is fixedly connected to the mounting frame 26. The connecting rib 33 and the limiting frame 28 limit the rack 34, ensuring the meshing of the rack 34 and the gear 27. The connecting rib 33 is fixedly connected with a second magnet 25, and the cross-sectional area of ​​the second magnet 25 is larger than the cross-sectional area of ​​the limiting frame 28. An attraction mechanism is arranged directly above the second magnet 25, and the attraction mechanism includes a first magnet 24 fixedly connected to the connecting frame 2, and the opposing surfaces of the first magnet 24 and the second magnet 25 are opposite magnetic surfaces. A stopper 23 fixedly connected to the second telescopic rod 6 is arranged between the first magnet 24 and the second magnet 25, and the stopper 23 prevents the first magnet 24 and the second magnet 25 from being adsorbed together. When the second telescopic rod 6 is retracted, the stop column 35 will reduce the distance between the first magnet 24 and the second magnet 25 and increase the attraction force as the second telescopic rod 6 continues to retract. When the second telescopic rod 6 is retracted to the highest point, the attraction force between the first magnet 24 and the second magnet 25 will cause the second magnet 25 to move upward, which will drive the rack 34 to move. At this time, the one-way bearing is locked, so that the drive gear 27 is rotated, so that the worm 30 drives the worm wheel 29 to rotate, thereby causing the mounting column 18 to rotate. When the rack 34 moves from the starting position to the stop contacting the stop block 23, the distance moved by the rack 34 each time is certain. The transmission ratio between the worm wheel and the worm 30 and the transmission ratio between the gear 27 and the rack 34 are controlled, so that the mounting column 18 rotates 180° each time, thereby turning the two surfaces of the cutter 19 back and forth, ensuring that the two surfaces of the cutter 19 are evenly worn, thereby ensuring the flatness of the blade and the cutting effect. When the second telescopic rod 6 is extended for cutting, due to the attraction between the first magnet 24 and the second magnet 25, the second magnet 25 and the rack 34 are partially supported. When the second telescopic rod 6 begins to extend, it only drives the limit frame 28 to move downward. When the limit frame 28 moves downward and contacts the stop column 35, it will drive the stop column 35 to move downward. As the distance between the first magnet 24 and the second magnet 25 increases, the attraction decreases, causing the rack 34 to move downward under gravity, driving the gear 27 to rotate. Since the one-way bearing is in a free rotation state at this time, the worm 30 will not be driven to rotate, and the second magnet 25 falls onto the limit frame 28. The rack 34 moves downward with the second telescopic rod 6, so that when the second telescopic rod 6 is extended, the cutter 19 cannot be driven to rotate. Only when the second telescopic rod 6 is retracted, can the cutter 19 be driven to rotate 180° to flip the two sides of the cutter.

[0025] When cutting, first fix the annular member 32 through the three-jaw chuck 5, then according to the required cutting position, extend the first telescopic rod 3, change the position of the cutter 19 to just above the required cutting position, then rotate the grasping column to drive the rotating disk 20 to rotate, thereby adjusting the position of the rotating disk 20 on the threaded segment, driving the moving block 17 to move, and changing the inclination angle of the hinged rod 15, so that the outer abutment plate 9 and the inner abutment plate 13 move toward each other to support one side of the cutting gap, the inner abutment block 11 and the outer abutment block 10 support the inner and outer walls of one side of the cutting gap, the motor 4 rotates to drive the three-jaw chuck 5 to rotate, and the second The telescopic rod 6 is extended, driving the cutter 19 to move and cut the rotating annular member 32. After the cutting is completed, the second telescopic rod 6 is retracted. When the second telescopic rod 6 is extended to the highest point, the attraction between the first magnet 24 and the second magnet 25 causes the second magnet 25 to move upward, which will drive the rack 34 to move, thereby rotating the driving gear 27, so that the worm 30 drives the worm wheel 29 to rotate, thereby causing the mounting column 18 to rotate 180°, flipping the two surfaces of the cutter 19, and finally, adjusting the position of the rotating disk 20 through the adjusting mechanism, so that the outer abutment plate 9 and the inner abutment plate 13 move away from each other, and the first telescopic rod 3 is retracted to take out the cut annular member.

[0026] The above description is only a preferred specific implementation manner of the invention, but the protection scope of the invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the invention according to the technical solution and concept of the invention, which should be covered by the protection scope of the invention.

Claims

1. A CNC lathe with a ring cutting mechanism, comprising a workbench (1), characterized in that: A rotating shaft (31) is rotatably connected to one end of the workbench (1) via a bearing, the rotating shaft (31) is driven by a motor (4), a three-jaw chuck (5) is fixedly connected to the rotating shaft (31), and the three-jaw chuck (5) fixes the annular member (32); The other end of the workbench (1) is fixedly connected to a first telescopic rod (3), the first telescopic rod (3) is fixedly connected to a fixed shaft (7), the fixed shaft (7) is fixedly connected to a plurality of sliding rods (14), the plurality of sliding rods (14) are slidably provided with outer abutment plates (9) and inner abutment plates (13), the plurality of outer abutment plates (9) are fixedly connected to outer abutment blocks (10) via an outer connecting frame (8), the plurality of inner abutment plates (13) are fixedly connected to inner abutment blocks (11) via an inner connecting frame (12), and each pair of outer abutment plates (9) and inner abutment plates (13) are adjusted by an adjustment mechanism; The fixed shaft (7) is fixedly connected to a connecting frame (2), the connecting frame (2) is fixedly connected to a second telescopic rod (6), the second telescopic rod (6) is connected to a mounting column (18), and the mounting column (18) is fixedly connected to a cutter (19).

2. A CNC lathe with a ring cutting mechanism according to claim 1, characterized in that: The outer abutment plate (9), the outer abutment block (10), the inner abutment block (11), and the inner abutment plate (13) are all made of wear-resistant materials.

3. A CNC lathe with a ring cutting mechanism according to claim 1, characterized in that: The adjustment mechanism comprises a rotating disk (20) threadedly connected to the fixed shaft (7), a slide groove (21) being provided on the rotating disk (20), the slide groove (21) being of an annular structure, a plurality of sliders (22) being slidably arranged in the slide groove (21), a plurality of sliders (22) being fixedly connected to a moving block (17), two ends of the plurality of moving blocks (17) being hinged to two hinged rods (15), the two hinged rods (15) being hinged to the outer abutment plate (9) and the inner abutment plate (13) respectively, and the plurality of moving blocks (17) being limited by a limiting mechanism.

4. A CNC lathe with a ring cutting mechanism according to claim 3, characterized in that: A gripping column is fixedly connected to the rotating disk (20).

5. A CNC lathe with a ring cutting mechanism according to claim 3, characterized in that: The limiting mechanism comprises a plurality of limiting rods (16), a plurality of moving blocks (17) are provided with limiting holes, a plurality of limiting holes are provided with limiting rods (16), a plurality of limiting rods (16) are fixedly connected to connecting ears, and a plurality of connecting ears are fixedly connected to the fixed shaft (7).

6. A CNC lathe with a ring cutting mechanism according to any one of claims 1 to 5, characterized in that: The mounting column (18) is rotatably connected to the second telescopic rod (6) via a connecting bearing; a worm wheel (29) is fixedly connected to the mounting column (18); a mounting frame (26) is fixedly connected to the second telescopic rod (6); a worm (30) is rotatably connected to the mounting frame (26) via a bearing; the worm (30) is meshed with the worm wheel (29); a gear (27) is rotatably connected to the worm (30) via a one-way bearing; a rack (34) is meshed with the gear (27); a connecting rib (33) is fixedly connected to the rack (34); a limiting frame (28) is sleeved on the connecting rib (33); the limiting frame (28) is fixedly connected to the mounting frame (26); a second magnet (25) is fixedly connected to the connecting rib (33); the cross-sectional area of ​​the second magnet (25) is larger than the cross-sectional area of ​​the limiting frame (28); and an attraction mechanism is arranged directly above the second magnet (25).

7. A CNC lathe with a ring cutting mechanism according to claim 6, characterized in that: The attraction mechanism comprises a first magnet (24) fixedly connected to the connecting frame (2); the opposing surfaces of the first magnet (24) and the second magnet (25) are opposite magnetic surfaces; a stopper (23) fixedly connected to the second telescopic rod (6) is arranged between the first magnet (24) and the second magnet (25); and a stopper column (35) is fixedly connected to the connecting rib (33).

8. A CNC lathe with a ring cutting mechanism according to claim 7, characterized in that: The connecting bearing is a thrust ball bearing.

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