Adjustable ball screw whirlwind milling fixing device

Abstract

This utility model relates to the field of ball screw machining technology and discloses an adjustable ball screw cyclone milling fixing device, including a machine tool. The machine tool is equipped with a milling assembly for milling workpieces. A tray is fixedly connected to the worktable of the machine tool. A support platform is provided on the tray via a transverse component. Two symmetrical T-shaped guide rails are fixedly connected to the upper surface of the support platform. Two symmetrical slides are slidably connected to the two T-shaped guide rails. A fixing frame is fixedly connected to each of the two slides. Three-jaw chucks for clamping workpieces are rotatably connected to the opposite sides of the two fixing frames via bearings. This utility model can fix workpieces of different lengths by changing the position of the two three-jaw chucks, effectively fixing workpieces of various lengths from very short to quite long, without replacing the entire fixture or making complex resets. The structure is simple and easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of ball screw processing technology, and more specifically to an adjustable ball screw cyclone milling fixing device. Background Technology

[0002] As a core component in the field of precision transmission, ball screws are widely used in high-precision and high-dynamic-response applications such as CNC machine tools, industrial robots, precision measuring instruments, and semiconductor equipment due to their significant advantages such as high transmission efficiency, low friction, high rigidity, and long life.

[0003] Cyclone milling is one of the mainstream processes for machining the raceways of ball screw threads. This process utilizes multiple carbide forming tools mounted on a high-speed rotating cutter head to perform planetary milling motions around a low-speed rotating workpiece, completing the roughing and finishing of the thread raceways in one or multiple passes. Compared with traditional turning or grinding processes, cyclone milling has advantages such as high machining efficiency, good surface quality, long tool life, and relatively superior machining flexibility, making it particularly suitable for the production of medium and large batches of ball screws.

[0004] A search revealed Chinese patent CN221362845U, which discloses a milling device for metal parts. This device, through the cooperation of a first pulley and a first belt, enables two threaded rods to rotate. Simultaneously, under the action of the rotating component, a brush rod can rotate while moving on the milling machine, thereby cleaning up the chips on the milling machine. However, when machining ball screws, it is necessary to install a frame and other components to fix the workpiece. When dealing with ball screws of different lengths, they need to be disassembled and moved, which consumes a lot of time and reduces efficiency. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an adjustable ball screw cyclone milling fixing device to solve the problems existing in the background art.

[0006] This utility model provides the following technical solution: an adjustable ball screw cyclone milling fixing device, including a machine tool, the machine tool is provided with a milling assembly for milling workpieces, a tray is fixedly connected to the worktable of the machine tool, a support platform is provided on the tray through a transverse component, two symmetrical T-shaped guide rails are fixedly connected to the upper surface of the support platform, two symmetrical slides are slidably connected to the two T-shaped guide rails, a fixing frame is fixedly connected to each of the two slides, and a three-jaw chuck for clamping workpieces is rotatably connected to the opposite side of the two fixing frames through bearings, and a drive motor for slowly rotating the corresponding three-jaw chuck along the axial direction is fixedly connected to one side of one of the fixing frames.

[0007] As a further embodiment of this utility model, the transverse component includes a fixed block fixedly connected to the lower surface of the support platform, a threaded rod rotatably connected between the inner walls of both sides of the tray via a bearing seat, and the threaded rod passes through the fixed block and is threadedly connected to it via a threaded cylinder, and a second drive motor is fixedly connected to one side of the tray to cause the threaded rod to rotate forward and backward along the bearing.

[0008] As a further embodiment of this utility model, two sets of symmetrical square grooves are provided on the upper surface of the support platform and located in the middle of the two T-shaped guide rails, and each set consists of multiple grooves at equal intervals. A square opening is provided on one side of each of the two fixed frames, and an I-shaped plate is slidably connected in the square opening. A block is fixedly connected to the lower surface of the I-shaped plate. A clearance opening is provided on the sliding platform to allow the block to be positioned, and the block passes through the clearance opening and is embedded in one of the square grooves.

[0009] As a further embodiment of this utility model, two sets of symmetrical circular grooves are fixedly connected to the upper surface of the support platform and the outer position of the T-shaped guide rail. Circular holes are opened at the four corners of the slide table. Connecting frames are fixedly connected to both sides of the I-shaped plate. Insert rods are fixedly connected to both ends of the connecting frames, and multiple insert rods pass through the circular holes and are embedded into one of the circular grooves.

[0010] As a further embodiment of this utility model, two symmetrical springs are fixedly connected to the upper surface of the I-shaped plate, and the top ends of the two springs are fixed to the top inner wall of the square opening.

[0011] As a further embodiment of this invention, multiple square grooves on the same side are staggered with multiple circular grooves in the corresponding two groups.

[0012] As a further embodiment of this utility model, a U-shaped pull plate is fixedly connected to the upper surface of the I-shaped plate, and multiple grooves are provided on the top inner wall of the U-shaped pull plate.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model can fix workpieces of different lengths by changing the position of two three-jaw chucks, effectively fixing workpieces of various lengths from very short to quite long, without replacing the entire fixture or making complex resets. The structure is simple and easy to operate.

[0015] 2. The present invention, through the provided square blocks and square grooves, can fix the position of the slide table after the adjustment of the three-jaw chuck is completed, so as to prevent it from shifting on its own during the operation and affecting the processing accuracy.

[0016] 3. This utility model further fixes the position of the slide table by providing a plug and a circular groove, further ensuring that the slide table will not slide on its own during the milling process, and further ensuring the accuracy of workpiece milling. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This utility model Figure 1 A schematic diagram of a localized explosion structure.

[0019] Figure 3 This is a schematic diagram of the bottom structure of the support platform of this utility model.

[0020] Figure 4 This is a partially enlarged structural diagram of the support platform of this utility model.

[0021] Figure 5 This utility model Figure 4 A magnified schematic diagram of the back structure.

[0022] The attached figures are labeled as follows: 1. Machine tool; 2. Milling assembly; 3. Pallet; 4. Support platform; 5. T-shaped guide rail; 6. Slide table; 7. Fixing frame; 8. Three-jaw chuck; 9. Drive motor one; 10. Square groove; 11. Round groove; 12. Threaded rod; 13. Drive motor two; 14. Fixing block; 15. Square opening; 16. I-beam plate; 17. Connecting frame; 18. Square block; 19. Clearance opening; 20. Round hole; 21. Insert rod; 22. Spring. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figures 1-5 This utility model provides an adjustable ball screw cyclone milling fixing device, including a machine tool 1. The machine tool 1 is equipped with a milling assembly 2 for milling workpieces. A tray 3 is fixedly connected to the worktable of the machine tool 1 by bolts. A support platform 4 is provided on the tray 3 by a transverse moving assembly. Two symmetrical T-shaped guide rails 5 are fixedly connected to the upper surface of the support platform 4 by bolts. Two symmetrical slides 6 are slidably connected to the two T-shaped guide rails 5. A fixing frame 7 is fixedly connected to each of the two slides 6 by bolts. A three-jaw chuck 8 for clamping workpieces is rotatably connected to the opposite side of the two fixing frames 7 by bearings. A drive motor 9 is fixedly connected to one side of one of the fixing frames 7 by bolts to cause the corresponding three-jaw chuck 8 to rotate slowly along the axial direction.

[0025] Workpieces of different lengths can be fixed by changing the positions of the two three-jaw chucks 8. This effectively fixes workpieces of various lengths, from very short to quite long, without the need to replace the entire fixture or make complex resets. The structure is simple and easy to operate.

[0026] It should be noted that the drive motor 9 is existing technology, which uses a servo motor with an encoder. The number of rotations and rotation angle of the motor output shaft are controllable and have high precision. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0027] It should be noted that the milling assembly 2 is existing technology, including the cutter head body, the cutting tool, and the drive motor. The cutter bar is pressed against the cutter head protrusion by a wedge block and adopts a rack and pinion clamping structure to achieve rigid fixation and stress distribution, while facilitating disassembly and maintenance. The motor and the spindle are connected by a toothed belt to reduce vibration. The torque motor adopts a rotor and a rigid direct connection to the cutter head. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0028] It should be noted that the three-jaw chuck 8 is existing technology, and those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0029] In this utility model, the transverse component includes a fixing block 14 that is fixedly connected to the lower surface of the support platform 4 by bolts. A threaded rod 12 is rotatably connected between the inner walls of both sides of the tray 3 through a bearing seat. The threaded rod 12 passes through the fixing block 14 and is threadedly connected to it through a threaded cylinder. A drive motor 13 that causes the threaded rod 12 to rotate forward and backward along the bearing is fixedly connected to one side of the tray 3 by bolts.

[0030] Specifically, during the milling process, starting the drive motor 13 will drive the threaded rod 12 to rotate. During the rotation of the threaded rod 12, the fixed block 14 will drive the bearing platform 4 to move laterally, thereby causing the workpiece to move laterally.

[0031] In this application, the inner wall of the threaded cylinder on the fixing block 14 is provided with an annular groove, and a nylon 66 damping ring with a Shore hardness of 85A is embedded in the groove. The continuous axial clamping force generated by its elastic deformation forms a helical angle interference fit with the surface of the threaded rod 12 at 15°-20°. When the threaded pair is subjected to axial vibration load, the nylon insert can generate a maximum elastic compression of 0.3mm, which increases the friction coefficient between the thread contact surfaces from 0.15 to 0.68 (tested according to ASTM D1894 standard), effectively suppressing the loosening displacement caused by thread springback.

[0032] It should be noted that the drive motor 213 is existing technology, which is a servo motor with an encoder. The number of rotations and rotation angle of the motor output shaft are controllable and have high precision. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0033] In this utility model, the upper surface of the support platform 4 and the position between the two T-shaped guide rails 5 are provided with two sets of symmetrical square grooves 10, and each set consists of multiple grooves at equal intervals. Each of the two fixed frames 7 has a square opening 15 on one side. An I-shaped plate 16 is slidably connected in the square opening 15. A block 18 is fixedly connected to the lower surface of the I-shaped plate 16 by bolts. The slide table 6 has a clearance opening 19 for avoiding the block 18. The block 18 passes through the clearance opening 19 and is embedded in one of the square grooves 10.

[0034] In specific use, first adjust the distance between the two three-jaw chucks 8 according to the length of the workpiece. During adjustment, first pull the I-plate 16 upward with the U-shaped pull plate so that the I-plate 16 slides upward along the square opening 15. At this time, the spring 22 is compressed. During the upward movement of the I-plate 16, it will drive the square block 18 at its bottom to slide upward along the clearance opening 19 until the square block 18 is completely separated from the corresponding square groove 10.

[0035] The provided block 18 and square groove 10 can fix the position of the slide table 6 after the adjustment of the three-jaw chuck 8 is completed, preventing it from shifting on its own during operation and affecting the machining accuracy.

[0036] Two symmetrical springs 22 are welded to the upper surface of the I-shaped plate 16, and the tops of the two springs 22 are fixed to the top inner wall of the square opening 15.

[0037] Specifically, as the I-shaped plate 16 moves upward, it will drive multiple insert rods 21 to move upward along the circular hole 20 through the connecting brackets 17 on both sides, until all the insert rods 21 disengage from the corresponding circular groove 11.

[0038] Furthermore, the upper surface of the I-beam plate 16 is fixedly connected to a U-shaped pull plate by bolts, and multiple grooves are provided on the inner top wall of the U-shaped pull plate.

[0039] In this utility model, the upper surface of the support platform 4 and the position outside the T-shaped guide rail 5 are both fixedly connected with two symmetrical sets of circular grooves 11 by bolts. The four corners of the slide table 6 are all provided with circular holes 20. The two sides of the I-shaped plate 16 are both fixedly connected with connecting brackets 17 by bolts. Both ends of the connecting brackets 17 are fixedly connected with insert rods 21 by bolts, and multiple insert rods 21 pass through the circular holes 20 and are embedded in one of the circular grooves 11.

[0040] The specific movable slide 6 slides along the T-shaped guide rail 5, thereby changing the distance between the two three-jaw chucks 8 to accommodate workpieces of different lengths. After the adjustment is completed, the I-plate 16 is released. At this time, the spring 22 releases its elastic force to push the I-plate 16 downward, so that the block 18 and the insert rod 21 move downward and are respectively embedded into the corresponding square groove 10 and round groove 11, thus completing the adjustment of the two three-jaw chucks 8. After the adjustment is completed, the workpiece can be installed between the two three-jaw chucks 8 and then milled by the milling assembly 2.

[0041] The position of the slide table 6 is further fixed by the insertion rod 21 and the circular groove 11, which further ensures that the slide table 6 will not slide on its own during the milling process, and further ensures the accuracy of workpiece milling.

[0042] In this invention, multiple square grooves 10 on the same side and multiple circular grooves 11 in two corresponding groups are staggered.

[0043] The use of this utility model involves the following steps:

[0044] S1: When using it, first adjust the distance between the two three-jaw chucks 8 according to the length of the workpiece. When adjusting, first pull the I-plate 16 upward with the U-shaped pull plate so that the I-plate 16 slides upward along the square opening 15. At this time, the spring 22 is compressed. During the upward movement of the I-plate 16, it will drive the square block 18 at its bottom to slide upward along the clearance opening 19 until the square block 18 is completely separated from the corresponding square groove 10.

[0045] S2: As the I-shaped plate 16 moves upward, it will drive multiple insert rods 21 to move upward along the circular hole 20 through the connecting brackets 17 on both sides of the plate until all the insert rods 21 disengage from the corresponding circular groove 11.

[0046] S3: Then the slide table 6 can be moved to slide along the T-shaped guide rail 5, thereby changing the distance between the two three-jaw chucks 8 to accommodate workpieces of different lengths. After adjustment, the I-plate 16 is released. At this time, the spring 22 releases its elastic force to push the I-plate 16 downward, so that the block 18 and the insert rod 21 move downward and are respectively embedded in the corresponding square groove 10 and round groove 11, thus completing the adjustment of the two three-jaw chucks 8. After adjustment, the workpiece can be installed between the two three-jaw chucks 8 and then milled by the milling assembly 2. During the milling process, the drive motor 13 is started to drive the threaded rod 12 to rotate. During the rotation of the threaded rod 12, the bearing table 4 is moved laterally through the fixed block 14, thereby moving the workpiece laterally.

[0047] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0048] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0049] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. An adjustable ball screw cyclone milling fixing device, comprising a machine tool (1), wherein the machine tool (1) is provided with a milling assembly (2) for milling a workpiece, characterized in that: A tray (3) is fixedly connected to the worktable of the machine tool (1). A support platform (4) is provided on the tray (3) through a transverse component. Two symmetrical T-shaped guide rails (5) are fixedly connected to the upper surface of the support platform (4). Two symmetrical slides (6) are slidably connected to the two T-shaped guide rails (5). A fixed frame (7) is fixedly connected to each of the two slides (6). A three-jaw chuck (8) for clamping the workpiece is rotatably connected to the opposite side of the two fixed frames (7) through bearings. A drive motor (9) is fixedly connected to one side of one of the fixed frames (7) to make the corresponding three-jaw chuck (8) rotate slowly along the axial direction.

2. The adjustable ball screw cyclone milling fixing device according to claim 1, characterized in that: The transverse component includes a fixed block (14) fixedly connected to the lower surface of the support platform (4). A threaded rod (12) is rotatably connected between the inner walls of the two sides of the tray (3) through a bearing seat. The threaded rod (12) passes through the fixed block (14) and is threadedly connected to it through a threaded cylinder. A second drive motor (13) is fixedly connected to one side of the tray (3) to make the threaded rod (12) rotate forward and backward along the bearing.

3. The adjustable ball screw cyclone milling fixing device according to claim 1, characterized in that: The upper surface of the support platform (4) and located in the middle of the two T-shaped guide rails (5) are provided with two sets of symmetrical square grooves (10), and each set consists of multiple grooves at equal intervals. The two fixed frames (7) are provided with square openings (15) on one side. An I-shaped plate (16) is slidably connected in the square opening (15). A block (18) is fixedly connected to the lower surface of the I-shaped plate (16). The slide table (6) is provided with a clearance opening (19) for the block (18) to avoid the block (18). The block (18) passes through the clearance opening (19) and is embedded in one of the square grooves (10).

4. The adjustable ball screw cyclone milling fixing device according to claim 3, characterized in that: Two sets of symmetrical circular grooves (11) are fixedly connected to the upper surface of the support platform (4) and to the outside of the T-shaped guide rail (5). Circular holes (20) are opened at the four corners of the slide table (6). Connecting frames (17) are fixedly connected to both sides of the I-shaped plate (16). Insert rods (21) are fixedly connected to both ends of the connecting frame (17), and multiple insert rods (21) are inserted into one of the circular grooves (11) through the circular holes (20).

5. The adjustable ball screw cyclone milling fixing device according to claim 3, characterized in that: Two symmetrical springs (22) are fixedly connected to the upper surface of the I-shaped plate (16), and the top ends of the two springs (22) are fixed to the top inner wall of the square opening (15).

6. The adjustable ball screw cyclone milling fixing device according to claim 1, characterized in that: Multiple square grooves (10) on the same side are staggered with multiple circular grooves (11) in the corresponding two groups.

7. The adjustable ball screw cyclone milling fixing device according to claim 5, characterized in that: A U-shaped pull plate is fixedly connected to the upper surface of the I-shaped plate (16), and multiple grooves are provided on the top inner wall of the U-shaped pull plate.

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