Screw milling anti-vibration tool

Abstract

The utility model relates to the technical field of milling, in particular to a screw milling anti-vibration tool which comprises a base, a left fixing seat and a right fixing seat are fixed to the left end and the right end of the top of the base respectively, and a mounting rail is fixed between the left fixing seat and the right fixing seat. An anti-vibration mechanism is arranged on the mounting rail and is used for preventing vibration in the milling process of the screw rod, and the anti-vibration mechanism comprises a driving assembly which is arranged on the base and is used for fixing the screw rod and driving the screw rod to rotate; the deviation preventing assembly comprises three adjusting pieces arranged on the mounting rail and is used for adjusting and fixing the position, mounting bases are arranged on the adjusting pieces on the left side and the middle, base bodies are fixed to the upper ends of the mounting bases, and three centering rods which are circumferentially distributed are mounted in the base bodies in a penetrating and sliding mode; through cooperation of the three centering rods and the balls, the screw rod is accurately limited in the center position, it is ensured that the screw rod cannot deviate in the rotary milling process, the positioning precision is further improved, and the high-precision machining requirement is met.

Description

Technical Field

[0001] This utility model relates to the field of milling technology, specifically to a vibration-damping fixture for screw milling. Background Technology

[0002] Currently, screws are either cylinders with helical grooves cut on their outer surface or cones with conical helical grooves cut on their outer surface. Screws come in different types, such as external hexagonal screws, large flat screws, and internal hexagonal screws. Commonly used barrel screw materials include 45# steel, 40Cr, nitrided steel, 38CrMOAl, and high-temperature alloys. Screws are mostly used in plastic molding equipment, such as plastic profile extruders and injection molding machines. Traditional thread processing methods mainly involve turning threads with a thread cutting tool or manually tapping and threading with taps and dies.

[0003] According to CN220637145U, a vibration damping tool for screw milling is disclosed. This technology discloses "a vibration damping tool for screw milling, including a worktable, a screw to be processed, and a control board. The worktable is provided with a pair of mounting platforms, and a three-jaw chuck and a hydraulic cylinder are fixedly mounted on the pair of mounting platforms respectively. The output end of the hydraulic cylinder is fixedly connected to a stop rod. One end of the screw to be processed is clamped in the three-jaw chuck, and the other end is rotatably connected to the stop rod. The screw to be processed is provided with a washing mechanism, which includes a milling cutter for thread processing of the screw to be processed. A pair of vibration damping mechanisms are provided below the screw to be processed." The technical solution has the following effects: "When the first motor drives the three-jaw chuck to rotate the screw to be processed, the screw to be processed makes rolling contact with the roller, and the second electric push rod pushes the roller to abut against the screw to be processed, preventing the screw to be processed from being vibrated and shifted due to the washing of the milling cutter, thus ensuring the thread processing effect of the screw to be processed."

[0004] The above solution uses a support frame to prevent the screw from deviating during the machining process. However, since the specifications of the support frame and its accessories are fixed, it is impossible to ensure that the support frame and the screw are always on the same axis when machining screws of different specifications. This may cause the screw to deviate, affecting the accuracy and quality of the thread machining. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a vibration-damping fixture for screw milling. Through the cooperation of three centering rods and ball bearings, the screw is precisely constrained in the center position, ensuring that it will not deviate during rotary milling, thereby further improving positioning accuracy and making it suitable for high-precision machining requirements.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vibration-damping fixture for screw milling, comprising a base, with a left fixed seat and a right fixed seat fixed at the top left and right ends of the base, respectively, and a mounting rail fixed between the left and right fixed seats. A vibration-damping mechanism is provided on the mounting rail for vibration damping during screw milling. The vibration-damping mechanism includes:

[0007] A drive assembly, mounted on the base, is used to fix the screw and drive its rotation;

[0008] The anti-deviation assembly includes three adjusting parts set on the mounting rail for position adjustment and fixation. The left and middle adjusting parts are each equipped with a mounting base. A base body is fixed to the upper end of the mounting base. Three circumferentially distributed centering rods are slidably installed inside the base body. Ball bearings are installed at the inner ends of the centering rods. Guide frames are rotatably installed at both ends of the base body. Three circumferentially distributed connecting rods are pivotally connected to the guide frames. An internal hexagonal screw is threaded inside the mounting base, and the upper end of the internal hexagonal screw is rotatably installed with the lower end of the upper centering rod.

[0009] A positioning component is mounted on the adjusting element and is used to position the screw.

[0010] Preferably, the anti-deviation assembly further includes three sliding grooves distributed circumferentially inside the base body, with sliding heads fixed at both ends of the centering rod and slidably installed inside the sliding grooves, and the end of the connecting rod away from the guide frame is pivotally connected to the corresponding sliding head.

[0011] Preferably, the positioning component includes a guide seat disposed on the right-side adjusting member, a positioning rod being slidably mounted transversely through the upper end of the guide seat, a bracket being pivotally connected to the lower end of the guide seat, and a handle being pivotally connected to the other end of the bracket, with the upper end of the handle being pivotally connected to the right end of the positioning rod.

[0012] Preferably, the adjusting component includes a lower seat mounted on a mounting rail, an upper seat pivotally connected to the lower seat via a rotating shaft, and a bolt installed between the upper seat and the lower seat.

[0013] Preferably, the vibration damping mechanism further includes an opening at the upper part of the seat body.

[0014] Preferably, the drive assembly includes a driven pulley fixed to a shaft seat, a driven pulley rotatably mounted on the left end of the shaft seat, a chuck fixed on the driven pulley, an extension frame fixed to the rear end of the shaft seat, a drive pulley rotatably mounted on the extension frame, a belt installed between the drive pulley and the driven pulley, and a motor mounted on the extension frame for driving the drive pulley.

[0015] Beneficial effects

[0016] This utility model provides a vibration-damping fixture for screw milling. Compared with the prior art, it has the following advantages:

[0017] 1. After the screw is fixed on the chuck and positioned by the positioning assembly, and is placed in the base, the internal hexagonal screw is rotated to drive the centering rod, which in turn drives the guide frame to rotate via the connecting rod. The guide frame drives the remaining centering rods via the other connecting rods, so that the three centering rods limit the screw between them through the corresponding ball bearings. Through the cooperation of the three centering rods and the ball bearings, the screw is precisely restricted to the center position, ensuring that it will not deviate during rotary milling, further improving the positioning accuracy and making it suitable for high-precision machining requirements.

[0018] 2. After the screw is fixed on the chuck, the positioning rod is moved in conjunction with the bracket to position the screw, which enhances the stability of the screw during movement and reduces vibration and offset. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the anti-deviation component in this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the base body in this utility model;

[0022] Figure 4 This is a schematic diagram of the positioning component in this utility model.

[0023] In the diagram: 1. Base; 2. Left fixed seat; 3. Right fixed seat; 4. Mounting rail; 5. Anti-vibration mechanism; 51. Drive assembly; 511. Shaft seat; 512. Driven pulley; 513. Chuck; 514. Extension frame; 515. Drive pulley; 516. Belt; 517. Motor; 52. Anti-deviation assembly; 521. Adjusting component; 5211. Lower seat; 5212. Rotating shaft; 5213. Upper seat; 5214. Bolt; 522. Mounting seat; 523. Seat body; 524. Centering rod; 525. Ball bearing; 526. Slide groove; 527. Sliding head; 528. Guide frame; 529. Connecting rod; 53. Positioning assembly; 531. Guide seat; 532. Positioning rod; 533. Bracket; 534. Handle; 54. Socket head screw; 55. Opening. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a vibration-damping fixture for screw milling, including a base 1, with a left fixed seat 2 and a right fixed seat 3 fixed at the top left and right ends of the base 1 respectively, and a mounting rail 4 fixed between the left fixed seat 2 and the right fixed seat 3. A vibration-damping mechanism 5 is provided on the mounting rail 4 for vibration damping during screw milling. The vibration-damping mechanism 5 includes:

[0026] The drive assembly 51 is mounted on the base 1 and is used to fix the screw and drive its rotation.

[0027] The anti-deviation assembly 52 includes three adjusting parts 521 set on the mounting rail 4 for adjusting and fixing the position. The left and middle adjusting parts 521 are each provided with a mounting base 522. The upper end of the mounting base 522 is fixed with a seat body 523. Three circumferentially distributed centering rods 524 are slidably installed inside the seat body 523. The inner end of the centering rods 524 is installed with a ball bearing 525. Guide frames 528 are rotatably installed at both ends of the seat body 523. Three circumferentially distributed connecting rods 529 are pivotally connected to the guide frames 528. The mounting base 522 is threaded with an internal hexagon screw 54, and the upper end of the internal hexagon screw 54 is rotatably installed with the lower end of the upper centering rod 524.

[0028] Positioning component 53 is disposed on adjusting component 521 and is used to position the screw.

[0029] In this embodiment, after the screw is fixed on the chuck 513 and positioned by the positioning component 53, and simultaneously placed in the base 523, the internal hexagonal screw 54 is rotated to drive the centering rod 524, which in turn drives the guide frame 528 to rotate via the connecting rod 529. The guide frame 528 drives the remaining centering rods 524 via the other connecting rods 529, so that the three centering rods 524 respectively limit the screw between them through the corresponding balls 525. Through the cooperation of the three centering rods 524 and the balls 525, the screw is precisely limited to the center position, ensuring that it will not deviate during rotary milling, further improving the positioning accuracy and making it suitable for high-precision machining requirements.

[0030] Specifically, the anti-deviation component 52 also includes three circumferentially distributed sliding grooves 526 inside the base 523. Both ends of the centering rod 524 are fixed with sliding heads 527 and are slidably installed inside the sliding grooves 526. The end of the connecting rod 529 away from the guide frame 528 is pivotally connected to the corresponding sliding head 527.

[0031] In this embodiment, when the centering rod 524 moves, it drives the slider 527 to slide along the slide groove 526, thereby limiting the movement of the centering rod 524.

[0032] Specifically, the positioning component 53 includes a guide seat 531 disposed on the right adjustment member 521. A positioning rod 532 is slidably mounted transversely through the upper end of the guide seat 531. A bracket 533 is pivotally connected to the lower end of the guide seat 531. A handle 534 is pivotally connected to the other end of the bracket 533, and the upper end of the handle 534 is pivotally connected to the right end of the positioning rod 532.

[0033] In this embodiment, after the screw is fixed on the chuck 513, the positioning rod 532 is moved in conjunction with the bracket 533 to position the screw, which enhances the stability of the screw during movement and reduces vibration and offset.

[0034] Specifically, the adjusting component 521 includes a lower seat 5211 mounted on the mounting rail 4, the lower seat 5211 being pivotally connected to an upper seat 5213 via a pivot shaft 5212, and a bolt 5214 being installed between the upper seat 5213 and the lower seat 5211.

[0035] In this embodiment, the position of the adjusting member 521 fixed on the mounting rail 4 is adjustable.

[0036] Specifically, the vibration damping mechanism 5 also includes an opening 55 located at the upper part of the interior of the seat 523.

[0037] In this embodiment, the screw can be removed from or inserted into the base 523 through the opening 55.

[0038] Specifically, the drive assembly 51 includes a shaft seat 511 fixed to the shaft seat 511, a driven pulley 512 rotatably mounted on the left end of the shaft seat 511, a chuck 513 fixed on the driven pulley 512, an extension frame 514 fixed to the rear end of the shaft seat 511, a drive pulley 515 rotatably mounted on the extension frame 514, a belt 516 installed between the drive pulley 515 and the driven pulley 512, and a motor 517 mounted on the extension frame 514 for driving the drive pulley 515.

[0039] In this embodiment, the screw is fixed by the chuck 513, and the drive pulley 515 is driven by the output end of the motor 517. The drive pulley 515 drives the driven pulley 512 through the belt 516, and the driven pulley 512 drives the screw to rotate through the chuck 513.

[0040] The working principle and usage process of this utility model are as follows: First, the screw is fixed by the chuck 513, and then the positioning rod 532 is moved in conjunction with the bracket 533 to position the screw.

[0041] Meanwhile, the screw is placed in the base 523, and the internal hexagon screw 54 is rotated to drive the centering rod 524, and through the connecting rod 529, the guide frame 528 is driven to rotate. The guide frame 528 drives the remaining centering rods 524 through the other connecting rods 529, so that the three centering rods 524 respectively limit the screw between them through the corresponding balls 525.

[0042] Then, the output of the motor 517 drives the drive pulley 515, which in turn drives the driven pulley 512 via the belt 516. The driven pulley 512 drives the screw to rotate via the chuck 513 for milling. Through the cooperation of the three centering rods 524 and the ball bearings 525, the screw is precisely restricted to the center position, ensuring that it will not deviate during the rotary milling process, further improving the positioning accuracy and making it suitable for high-precision machining requirements.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibration damping fixture for screw milling, comprising a base (1), wherein a left fixed seat (2) and a right fixed seat (3) are respectively fixed at the left and right ends of the top of the base (1), and a mounting rail (4) is fixed between the left fixed seat (2) and the right fixed seat (3), characterized in that: The mounting rail (4) is equipped with a vibration damping mechanism (5) for vibration damping during screw milling. The vibration damping mechanism (5) includes: A drive assembly (51) is mounted on a base (1) and is used to fix the screw and drive its rotation. The anti-deviation assembly (52) includes three adjusting parts (521) set on the mounting rail (4) for adjusting and fixing the position. The left and middle adjusting parts (521) are each provided with a mounting base (522). The upper end of the mounting base (522) is fixed with a seat body (523). Three circumferentially distributed centering rods (524) are slidably installed inside the seat body (523). The inner end of the centering rods (524) is installed with a ball (525). Both ends of the seat body (523) are rotatably installed with guide frames (528). Three circumferentially distributed connecting rods (529) are pivotally connected to the guide frames (528). The mounting base (522) is threaded with an internal hexagonal screw (54), and the upper end of the internal hexagonal screw (54) is rotatably installed with the lower end of the upper centering rod (524). A positioning component (53) is provided on the adjusting member (521) and is used to position the screw.

2. The anti-vibration fixture for screw milling according to claim 1, characterized in that: The anti-deviation assembly (52) also includes three circumferentially distributed sliding grooves (526) inside the seat (523). Both ends of the centering rod (524) are fixed with sliding heads (527) and are slidably installed inside the sliding grooves (526). The end of the connecting rod (529) away from the guide frame (528) is pivotally connected to the corresponding sliding head (527).

3. The anti-vibration fixture for screw milling according to claim 1, characterized in that: The positioning component (53) includes a guide seat (531) disposed on the right adjustment member (521). A positioning rod (532) is slidably mounted transversely through the upper end of the guide seat (531). A bracket (533) is pivotally connected to the lower end of the guide seat (531). A handle (534) is pivotally connected to the other end of the bracket (533), and the upper end of the handle (534) is pivotally connected to the right end of the positioning rod (532).

4. The anti-vibration fixture for screw milling according to claim 1, characterized in that: The adjusting component (521) includes a lower seat (5211) mounted on the mounting rail (4), the lower seat (5211) being pivotally connected to an upper seat (5213) via a pivot (5212), and a bolt (5214) being installed between the upper seat (5213) and the lower seat (5211).

5. The anti-vibration fixture for screw milling according to claim 1, characterized in that: The vibration damping mechanism (5) also includes an opening (55) at the upper part of the interior of the seat (523).

6. The anti-vibration fixture for screw milling according to claim 1, characterized in that: The drive assembly (51) includes a shaft seat (511) fixed to the shaft seat (511), a driven pulley (512) rotatably mounted on the left end of the shaft seat (511), a chuck (513) fixed on the driven pulley (512), an extension frame (514) fixed to the rear end of the shaft seat (511), a drive pulley (515) rotatably mounted on the extension frame (514), a belt (516) installed between the drive pulley (515) and the driven pulley (512), and a motor (517) mounted on the extension frame (514) for driving the drive pulley (515).

Images