A vibration-proof milling machine facilitating fixation of workpieces

Abstract

The utility model discloses a kind of anti-vibration milling machine facilitating fixed workpiece, including machine body, support is equipped on machine body, processing tool holder is installed in the front end of support, processing tool holder is driven to realize transverse movement by first drive component, machine body is also equipped with workbench, workbench is driven to realize longitudinal movement by second drive component, clamping device is installed on workbench, support is located on the side of processing tool holder, and limit sliding block is arranged in upper and lower interval, wherein the upper limit sliding block protrudes on the upper end surface of support, the lower limit sliding block protrudes on the lower end surface of support, extension is arranged in upper and lower interval on the back of processing tool holder, limit sliding slot is equipped on two extension, wherein, the upper limit sliding slot opening is downward, the lower limit sliding slot opening is upward, respectively with corresponding limit sliding block on support sliding fit, by being provided with limit sliding block and limit sliding slot of mutual cooperation on support and processing tool holder, constitute double guide rail guide structure, and the movement rigidity and guide precision are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of milling machine technology, specifically a vibration-damping milling machine that facilitates workpiece fixation. Background Technology

[0002] A milling machine is a machine tool that uses a milling cutter to process various surfaces of a workpiece. It typically uses the rotation of the milling cutter as the main motion and the relative movement between the workpiece and the milling cutter as the feed motion. It can be widely used to process planes, grooves, and various complex curved surfaces, gears, and other parts.

[0003] During milling, vibration has a significant negative impact on machining quality. To ensure high machining accuracy and a smooth surface finish, the machine tool must control vibration to the lowest possible level. Otherwise, excessive vibration will not only reduce machining accuracy and affect workpiece surface quality, but may also lead to accelerated tool wear or even damage, severely impacting machining efficiency and product quality. Utility Model Content

[0004] The purpose of this invention is to provide a vibration-damping milling machine that facilitates workpiece fixation, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A vibration-damping milling machine for easy workpiece fixation includes a machine body with a support on the machine body. A machining tool holder is mounted on the front end of the support. The machining tool holder is driven to move laterally by a first drive assembly. The machine body also has a worktable, which is driven to move longitudinally by a second drive assembly. A clamping device is mounted on the worktable. Limiting sliders are provided vertically at intervals on one side of the support near the machining tool holder. The upper limiting slider protrudes from the upper end face of the support, and the lower limiting slider protrudes from the lower end face of the support. Extensions are provided vertically at intervals on the back of the machining tool holder. Both extensions are provided with limiting grooves. The upper limiting groove opens downwards, and the lower limiting groove opens upwards, respectively slidingly engaging with the corresponding limiting sliders on the support.

[0007] Furthermore, the clamping device includes a placement platform with a movable groove. A bidirectional threaded rod is disposed in the movable groove, and both ends of the bidirectional threaded rod are rotatably connected to the placement platform. The middle section of the bidirectional threaded rod is a threadless section, on which a support seat is rotatably connected. A fixing plate is mounted on the support seat, and a placement plate is mounted on the fixing plate. Nut seats are threadedly connected to both threaded sections of the bidirectional threaded rod. Limiting slides are mounted on both nut seats, and clamping components are mounted on both limiting slides. The two clamping components are symmetrically arranged on both sides of the placement plate. Each clamping component has a threaded hole and a clearance groove, wherein the clearance groove is located on the side closer to the placement plate. An abutment plate is slidably connected in the clearance groove, and a threaded push rod is threadedly connected in the threaded hole. The end of the threaded push rod is rotatably connected to the abutment plate.

[0008] Furthermore, one end of the bidirectional threaded rod extends to the outside of the placement platform, and a plurality of external protrusions are evenly provided on the outer periphery of its end, and an "L"-shaped handle sleeve is inserted therein, the inner wall of the handle sleeve matching the external protrusions.

[0009] Furthermore, the placement platform is symmetrically provided with limiting grooves on both sides of the movable groove, and guide rods are provided in both limiting grooves. The two ends of the two guide rods are fixedly connected to the two ends of the placement platform. Two guide seats are slidably sleeved on the two guide rods. One guide seat is fixedly connected to the bottom surface of one limiting slide plate, and the other guide seat is fixedly connected to the bottom surface of the other limiting slide plate.

[0010] Furthermore, both ends of the top surface of the placement platform are provided with fixing strips, and the two sides of the limiting slide plates are respectively connected with accordion covers, wherein the other end of one accordion cover is connected to the fixing strip, and the other end of the other accordion cover is connected to the fixing plate.

[0011] Furthermore, the cross-section of the accordion cover is in the shape of an inverted "U", the width of the groove is greater than the width of the placement platform, and it covers the placement platform from above.

[0012] The beneficial effects of this utility model are:

[0013] This invention features a double-rail guiding structure. Limiting sliders are spaced vertically on one side of the support located on the machining tool holder. The upper limiting slider protrudes from the upper end face of the support, and the lower limiting slider protrudes from the lower end face. Correspondingly, extensions are spaced vertically on the back of the machining tool holder. Both extensions have limiting grooves. The upper limiting groove opens downwards and slides with the upper limiting slider protruding from the upper part of the support, while the lower limiting groove opens upwards and slides with the lower limiting slider protruding from the lower part of the support. This creates a more uniform force distribution on the machining tool holder during lateral movement, enhancing motion rigidity and guiding accuracy. Simultaneously, it suppresses vibration and offset caused by cutting forces during milling, improving the overall dynamic stability of the machine tool and ultimately enhancing the machining accuracy and surface quality of the workpiece.

[0014] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0015] Figure 1 The overall structure of this utility model Figure 1 .

[0016] Figure 2 The overall structure of this utility model Figure 2 .

[0017] Figure 3 : Exploded view of the machining tool holder and support of this utility model.

[0018] Figure 4 : Structural diagram of the clamping device of this utility model.

[0019] Figure 5 : Exploded view of the clamping device of this utility model.

[0020] Figure 6 : A cross-sectional view of the clamping device of this utility model.

[0021] Figure 7 : Schematic diagram of the handle sleeve insertion of this utility model.

[0022] Reference numerals: 1. Machine body; 2. Support; 3. Machining tool holder; 4. Worktable; 5. Placement table; 11. Second drive assembly; 21. First drive assembly; 22. Limiting slider; 31. Extension; 32. Limiting groove; 51. Movable groove; 52. Bidirectional threaded rod; 53. Support seat; 54. Nut seat; 55. Limiting groove; 56. Guide rod; 57. Guide seat; 58. Fixing strip; 59. Bellows cover; 521. Outer protrusion; 522. Handle sleeve; 531. Fixing plate; 532. Placement plate; 541. Limiting slide plate; 542. Clamping component; 543. Threaded hole; 544. Clearance groove; 545. Abutment plate; 546. Threaded push rod. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Please refer to Figure 1-7 ;

[0025] A vibration-damping milling machine for easy workpiece fixation includes a machine body 1, a support 2 on the machine body 1, and a machining tool holder 3 for mounting cutting tools mounted on the front end of the support 2. The machining tool holder 3 is driven by a first drive assembly 21 to achieve lateral movement. The machine body 1 also includes a worktable 4, which is driven by a second drive assembly 11 to achieve longitudinal movement. A clamping device is mounted on the worktable 4 for clamping the workpiece to be machined, thereby enabling the cutting tools on the machining tool holder 3 to perform milling operations on the workpiece. It should be noted that the first drive assembly 21 and the second drive assembly 11 have the same structure, both including a drive motor, a ball screw, and two fixed seats for supporting the ball screw. The two fixed seats of the first drive assembly 21 are fixed on the support 2 on one side of the machining tool holder 3 to support the ball screw of the first drive assembly 21. The two fixed seats of the second drive assembly 11 are fixed on the worktable 4 to support the ball screw of the second drive assembly 11. The two ends of the two ball screws are rotatably connected to the corresponding two fixed seats. The machining tool holder 3 and the worktable 4 are respectively connected to the corresponding ball screws through a nut pair transmission. One end of each ball screw extends to the outside of the fixed seat and a driven wheel is installed at that end. The drive motor of the first drive assembly 21 is installed inside the support 2, and the drive motor of the second drive assembly 11 is installed on one side of the worktable 4. The output shafts of the two drive motors are equipped with drive wheels, which are connected to the corresponding driven wheels through a synchronous belt, thereby driving the ball screws to rotate and realizing the transverse feed of the machining tool holder 3 and the longitudinal feed of the worktable 4. The support 2 is located on one side of the machining tool holder 3 and is provided with limiting sliders 22 spaced vertically. The upper limiting slider 22 protrudes from the upper end face of the support 2, and the lower limiting slider 22 protrudes from the lower end face of the support 2. Correspondingly, the back of the machining tool holder 3 is provided with extensions 31 spaced vertically. Both extensions 31 are provided with limiting grooves 32. The upper limiting groove 32 opens downward and slides in cooperation with the limiting slider 22 protruding above the support 2, while the lower limiting groove 32 opens upward and slides in cooperation with the limiting slider 22 protruding below the support 2. This forms a double guide rail structure, which makes the force on the machining tool holder 3 more uniform during the lateral movement, enhances the motion rigidity and guiding accuracy, and at the same time suppresses the vibration and offset caused by the cutting force during milling, improves the overall dynamic stability of the machine tool, and thus improves the machining accuracy and surface quality of the workpiece.

[0026] In this embodiment, the clamping device includes a placement platform 5, which has a movable groove 51. A bidirectional threaded rod 52 is disposed in the movable groove 51, and both ends of the bidirectional threaded rod 52 are rotatably connected to the placement platform 5 to ensure its smooth rotation. The middle section of the bidirectional threaded rod 52 is a threadless section, on which a support seat 53 is rotatably connected via a bearing. The support seat 53 is fixed in the movable groove 51 by screws, providing intermediate support for the bidirectional threaded rod 52 and improving its rigidity and stability during rotation. A fixing plate 531 is installed above the support seat 53, and a placement plate 532 is installed on the fixing plate 531. The workpiece to be processed is placed on the placement plate 532 for processing. Nut seats 54 are threadedly connected to both threaded sections of the bidirectional threaded rod 52. Limiting slide plates 541 are installed on both nut seats 54, and clamping members 542 are installed on both limiting slide plates 541. The two clamping members 542 are symmetrically arranged on both sides of the placement plate 532 for clamping and fixing the workpiece. Both clamping members 542 are provided with threaded holes 543 and clearance grooves 544. The clearance groove 544 is located on the side close to the placement plate 532. An abutment plate 545 is slidably connected in the clearance groove 544. A threaded push rod 546 is threadedly connected in the threaded hole 543. The end of the threaded push rod 546 is rotatably connected to the abutment plate 545, so that when the threaded push rod 546 is rotated, the abutment plate 545 can be pushed to move in the clearance groove 544.

[0027] During operation, rotating the bidirectional threaded rod 52, due to the opposite directions of its threads, drives the two nut seats 54 to move synchronously towards or away from each other. This, in turn, drives the limiting slide plates 541 and clamping members 542 on both sides to move synchronously, achieving rapid clamping or loosening of the workpiece. It should be noted that before clamping the workpiece, the two threaded push rods 546 need to be rotated in advance to retract the abutment plate 545 into the relief groove 544. After the clamping members 542 initially clamp the workpiece, the threaded push rods 546 on both sides are rotated again to push the abutment plate 545 out of the relief groove 544, further pressing the workpiece surface, achieving secondary clamping of the workpiece. This enhances the clamping effect and prevents the workpiece from shifting, loosening, or vibrating due to cutting forces or vibrations during high-speed milling, thereby ensuring machining accuracy and surface quality.

[0028] In this embodiment, one end of the bidirectional threaded rod 52 extends to the outside of the placement platform 5, and a plurality of external protrusions 521 are evenly provided on the outer periphery of its end. The plurality of external protrusions 521 form an anti-slip structure. An "L"-shaped handle sleeve 522 is inserted into this end. The inner wall of the handle sleeve 522 matches the external protrusions 521, so that the sleeve can be circumferentially fixedly connected to the bidirectional threaded rod 52. When the handle sleeve 522 is fitted, the external protrusions 521 and the inner wall grooves fit together, which can effectively transmit torque. During operation, rotating the handle sleeve 522 can drive the bidirectional threaded rod 52 to rotate synchronously, thereby realizing the linkage adjustment of the clamping parts 542 on both sides. After the adjustment is completed, the handle sleeve 522 can be directly pulled out axially.

[0029] In this embodiment, the placement platform 5 is symmetrically provided with limiting grooves 55 on both sides of the movable groove 51. Guide rods 56 are provided in both limiting grooves 55, and both ends of the guide rods 56 are fixedly connected to both ends of the placement platform 5 to ensure stable installation and parallel axes. Two guide seats 57 are slidably sleeved on the two guide rods 56. One guide seat 57 is fixedly connected to the bottom surface of one limiting slide plate 541, and the other guide seat 57 is fixedly connected to the bottom surface of the other limiting slide plate 541. When the bidirectional threaded rod 52 rotates and drives the nut seat 54 to move, the limiting slide plate 541 moves synchronously under the push of the nut seat 54. Its movement is guided by the guide seats 57 along the guide rods 56, thereby effectively constraining the direction of movement and preventing the limiting slide plate 541 from deflecting or jamming during movement.

[0030] In this embodiment, both ends of the top surface of the placement platform 5 are provided with fixing strips 58, and the two sides of the limiting slide plates 541 are respectively connected with bellows covers 59. One end of the bellows cover 59 is connected to the fixing strip 58, and the other end of the bellows cover 59 is connected to the fixing plate 531. When the limiting slide plate 541 moves left and right along the movable groove 51 under the drive of the bidirectional threaded rod 52, the bellows cover 59 extends or compresses synchronously, which can effectively cover the exposed movable groove 51 and limiting groove 55, preventing contaminants such as chips, coolant, and dust generated during the processing from entering the movable groove 51, guide rod 56, and threaded pair and other moving parts, avoiding wear, jamming, or reduction in transmission accuracy.

[0031] In this embodiment, the cross-section of the bellows cover 59 is in the shape of an inverted "U". The width of its groove is greater than the width of the placement table 5, and it covers the placement table 5 from above to form a protective covering, preventing chips, coolant or dust splashed during processing from entering from the side.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A vibration-damping milling machine for easy workpiece fixation, comprising a machine body (1), a support (2) provided on the machine body (1), a machining tool holder (3) mounted on the front end of the support (2), the machining tool holder (3) being driven to move laterally by a first drive assembly (21), a worktable (4) also provided on the machine body (1), the worktable (4) being driven to move longitudinally by a second drive assembly (11), and a clamping device mounted on the worktable (4), characterized in that, The support (2) is located on one side of the machining tool holder (3) and is provided with limiting sliders (22) spaced vertically. The upper limiting slider (22) protrudes from the upper end face of the support (2) and the lower limiting slider (22) protrudes from the lower end face of the support (2). The back of the machining tool holder (3) is provided with extensions (31) spaced vertically. Both extensions (31) are provided with limiting grooves (32). The upper limiting groove (32) opens downward and the lower limiting groove (32) opens upward, respectively slidingly engaging with the corresponding limiting sliders (22) on the support (2).

2. The anti-vibration milling machine for easy workpiece fixing according to claim 1, characterized in that, The clamping device includes a placement platform (5), on which a movable groove (51) is provided. A bidirectional threaded rod (52) is provided in the movable groove (51). Both ends of the bidirectional threaded rod (52) are rotatably connected to the placement platform (5). The middle part of the bidirectional threaded rod (52) is a threadless section. A support seat (53) is rotatably connected to the threadless section. A fixing plate (531) is installed on the support seat (53). A placement plate (532) is installed on the fixing plate (531). Nut seats (54) are threadedly connected to both threaded sections of the bidirectional threaded rod (52). Each of the two limiting slide plates (541) is equipped with a clamping member (542). The two clamping members (542) are symmetrically arranged on both sides of the placement plate (532). Each clamping member (542) is provided with a threaded hole (543) and a clearance groove (544). The clearance groove (544) is located on the side closer to the placement plate (532). An abutment plate (545) is slidably connected in the clearance groove (544). A threaded push rod (546) is threadedly connected in the threaded hole (543). The end of the threaded push rod (546) is rotatably connected to the abutment plate (545).

3. A vibration-damping milling machine for easy workpiece fixing according to claim 2, characterized in that, One end of the bidirectional threaded rod (52) extends to the outside of the placement platform (5), and a plurality of external protrusions (521) are evenly provided on the outer periphery of its end, and an "L"-shaped handle sleeve (522) is inserted therein, the inner wall of the handle sleeve (522) matching the external protrusions (521).

4. A vibration-damping milling machine for easy workpiece fixing according to claim 2, characterized in that, The placement platform (5) is symmetrically provided with limiting grooves (55) on both sides of the movable groove (51). Guide rods (56) are provided in both limiting grooves (55). Both ends of the two guide rods (56) are fixedly connected to both ends of the placement platform (5). Two guide seats (57) are slidably sleeved on the two guide rods (56). One guide seat (57) is fixedly connected to the bottom surface of one end of a limiting slide plate (541), and the other guide seat (57) is fixedly connected to the bottom surface of one end of another limiting slide plate (541).

5. A vibration-damping milling machine for easy workpiece fixing according to claim 4, characterized in that, The top surface of the placement platform (5) is provided with fixing strips (58) at both ends. The two limiting slide plates (541) are respectively connected to accordion covers (59). One accordion cover (59) is connected to the fixing strip (58) at one end, and the other accordion cover (59) is connected to the fixing plate (531) at the other end.

6. A vibration-damping milling machine for easy workpiece fixing according to claim 5, characterized in that, The cross-section of the accordion cover (59) is in the shape of an inverted "U". The width of the groove is greater than the width of the placement platform (5), and it covers the placement platform (5) from above.

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