Adjustable numerical control machining device for valve rod

Abstract

The utility model discloses an adjustable numerical control machining device for a valve rod, relates to the field of valve rod machining, and aims to solve the problems that in the prior art, a turning tool of an existing machining device conducts turning from one side of the valve rod, the position of the turning tool cannot be adjusted, and when the front end and the rear end of the valve rod need to be turned, a side face turning machining device needs to be used; and the production efficiency is influenced. A driving device is fixedly arranged on one side of the upper end of the workbench, a three-jaw chuck is rotationally connected to one side of the driving device, a valve rod is clamped on the three-jaw chuck, a rotating table plate is rotationally connected to the middle of the upper end face of the workbench, and side plates are fixedly connected to the two sides of the upper end face of the rotating table plate. Guide rails are fixedly connected to the front ends and the rear ends between the two side plates, a screw rod is rotationally connected to the middle between the two side plates, a movable table is jointly connected to the middles of the upper ends of the two guide rails, and a turning tool apron is fixedly connected to the upper end of the movable table.

Description

Technical Field

[0001] This utility model relates to the field of valve stem processing, specifically an adjustable CNC machining device for valve stems. Background Technology

[0002] The valve stem is a crucial component of a valve, used for transmission. It connects to the actuator or handle at the top and directly drives the valve core to move or rotate, thus achieving the valve's opening, closing, or regulating function. During valve opening and closing, the valve stem is not only a moving and load-bearing component but also a sealing element. Simultaneously, it is subjected to the impact and corrosion of the medium and also experiences friction with the packing. Therefore, when selecting valve stem materials, it is essential to ensure that they possess sufficient strength, good impact toughness, scratch resistance, and corrosion resistance at the specified temperature. As a wear part, the valve stem's machinability and heat treatment properties should also be considered during selection. Valve stems require machining using a turning device during production.

[0003] For example, according to authorization announcement number CN214869098U, a processing device for valve stem production includes a processing device body. The processing device body includes an equipment shell. A valve stem component is connected to the right side surface of the equipment shell. A first guide rail is connected to the bottom right side surface of the equipment shell. A cleaning mechanism is connected to the top surface of the first guide rail. A first tool holder is connected to the top surface of the first guide rail. A quick-release mechanism is connected to the top surface of the first tool holder. The quick-release mechanism includes a cover, a first connecting seat, an inner connecting groove, a first locking block, a first pulling block, and a first spring. This processing device for valve stem production, by setting the quick-release mechanism, can easily and quickly replace the worn cover. Furthermore, by setting the cleaning mechanism, the device can easily clean the metal shavings remaining inside the first guide rail.

[0004] Existing machining equipment uses cutting tools that turn from one side of the valve stem, and the tool position is not adjustable. When the valve stem needs to be turned at both ends, a side-turning machining equipment is required, which affects production efficiency. Therefore, there is an urgent need in the market to develop an adjustable CNC machining equipment for valve stems to help people solve the existing problems. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable CNC machining device for valve stems, in order to solve the problem mentioned in the background art that the cutting tools of existing machining devices are all turned from one side of the valve stem, the position of the cutting tool cannot be adjusted, and when the valve stem needs to be turned at both ends, a side-turning machining device is required, which affects production efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable CNC machining device for valve stems, comprising a worktable, a driving device fixedly mounted on one side of the upper end of the worktable, a three-jaw chuck rotatably connected to one side of the driving device, a valve stem being gripped on the three-jaw chuck, a rotating table plate rotatably connected to the middle of the upper end face of the worktable, side plates fixedly connected to both sides of the upper end face of the rotating table plate, guide rails fixedly connected to both ends of the two side plates, a screw rotatably connected to the middle of the two side plates, a movable table connected to the middle of the upper ends of the two guide rails, and a tool holder fixedly connected to the upper end of the movable table.

[0007] Preferably, a limiting tube is fixedly connected to the upper surface inside the workbench, the upper end of the limiting tube is connected to the upper surface of the workbench, and a support ring is fixedly connected to the upper surface of the workbench on the outer side of the upper end of the limiting tube.

[0008] Preferably, a rotating column is fixedly connected to the lower middle part of the rotating platform, the lower end of the rotating column extends through the middle of the limiting tube into the interior of the worktable, and a worm gear is fixedly connected to the lower end of the outer end face of the rotating column inside the worktable.

[0009] Preferably, a worm gear is rotatably connected to one side of the worktable, a first servo motor is provided at the front end of the worm gear, the front end of the worm gear is fixedly connected to the output shaft of the first servo motor, and one side of the worm gear is meshed with the teeth of the worm wheel on the rotating column.

[0010] Preferably, a second servo motor is fixedly connected to the outer side of the side plate on one side of the upper end of the rotating platform, and one end of the screw passes through the middle of the side plate and is fixedly connected to the output shaft of the second servo motor.

[0011] Preferably, guide sliders are fixedly connected to both the front and rear ends of the lower end face of the moving platform, and the two guide sliders are slidably connected to the two guide rails.

[0012] Preferably, a threaded slider is fixedly connected to the middle of the lower end face of the movable stage, and the screw passes through the middle of the threaded slider and is threadedly connected to the threaded slider.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, by setting a rotating table and its driving mechanism, the tool holder can be rotated in an adjustable manner relative to the valve stem, so that the tool holder can be turned from the front end or the rear end of the valve stem without changing the processing device or adjusting the valve stem position, which greatly improves the processing efficiency and flexibility.

[0015] (2) In this utility model, the screw is driven to rotate by the second servo motor, and the sliding connection between the threaded slider and the guide rail is combined to realize the linear movement of the cutting tool holder, thereby enabling precise adjustment of the relative position between the cutting tool and the valve stem, ensuring machining accuracy and surface quality.

[0016] (3) In this utility model, the meshing transmission between the worm and the worm wheel teeth has a self-locking characteristic, which enables the rotary table to remain stable after the position is adjusted, avoiding shaking and errors during the processing, and improving the stability and reliability of the processing. At the same time, the entire device has a compact structure, is easy to operate, and is easy to automate, reducing the labor intensity of workers. Attached Figure Description

[0017] Figure 1 This is a front view of an adjustable CNC machining device for valve stems according to the present invention;

[0018] Figure 2 This is a front sectional view of the present invention;

[0019] Figure 3 This is a side sectional view of the rotating column of this utility model;

[0020] Figure 4 This is a side sectional view of the worm gear of this utility model;

[0021] Figure 5 This is a detailed enlarged view of part A of this utility model.

[0022] In the diagram: 1. Worktable; 101. Drive unit; 102. Three-jaw chuck; 103. Valve stem; 104. Limit tube; 105. Support ring; 2. Worm gear; 201. First servo motor; 3. Rotary table; 301. Rotating column; 302. Worm gear teeth; 303. Side plate; 304. Guide rail; 4. Screw; 401. Second servo motor; 5. Moving table; 501. Guide slider; 502. Threaded slider; 503. Tool holder. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1-5This utility model provides an embodiment of an adjustable CNC machining device for valve stems, comprising a worktable 1. A driving device 101 is fixedly mounted on one side of the upper end of the worktable 1. A three-jaw chuck 102 is rotatably connected to one side of the driving device 101. A valve stem 103 is clamped on the three-jaw chuck 102. The driving device 101 drives the three-jaw chuck 102 to rotate, thereby causing the valve stem 103 to rotate. A rotating platform 3 is rotatably connected to the middle of the upper surface of the worktable 1. A limit tube 104 is fixedly connected to the upper surface of the worktable 1. The upper end of the limit tube 104 communicates with the upper surface of the worktable 1. A support ring 105 is fixedly connected to the upper surface of the worktable 1 and to the outer side of the upper end of the limit tube 104. A rotating column 30 is fixedly connected to the middle of the lower end of the rotating platform 3. 1. The lower end of the rotating column 301 extends through the middle of the limiting tube 104 into the interior of the worktable 1. The lower end of the outer end face of the rotating column 301 is fixedly connected to a worm gear 302 inside the worktable 1. A worm 2 is rotatably connected to one side inside the worktable 1. A first servo motor 201 is provided at the front end of the worm 2. The front end of the worm 2 is fixedly connected to the output shaft of the first servo motor 201. One side of the worm 2 is meshed with the tooth of the worm gear 302 on the rotating column 301. The first servo motor 201 drives the worm 2 to rotate, which in turn drives the rotating column 301 to rotate, causing the rotating column 301 to rotate the rotating table 3. Through the self-locking action between the worm 2 and the worm gear 302, the rotating column 301 remains stable after rotation.

[0025] Please see Figure 2-5 Side plates 303 are fixedly connected to both sides of the upper surface of the rotary table 3. Guide rails 304 are fixedly connected to both ends of the two side plates 303. A screw 4 is rotatably connected between the two side plates 303. A movable table 5 is connected to the middle of the upper end of the two guide rails 304. A cutting tool holder 503 is fixedly connected to the upper end of the movable table 5. The rotary table 3 rotates to drive the movable table 5 and the cutting tool holder 503 on it to rotate to the front or rear end of the valve stem 103, so that the cutting tool fixed on the cutting tool holder 503 can turn the front or rear end of the valve stem 103.

[0026] Please see Figure 2-5A second servo motor 401 is fixedly connected to the outer side of the side plate 303 on one side of the upper end of the rotary table 3. One end of the screw 4 passes through the middle of the side plate 303 and is fixedly connected to the output shaft of the second servo motor 401. Guide sliders 501 are fixedly connected to both the front and rear ends of the lower end face of the moving table 5. The two guide sliders 501 are slidably connected to the two guide rails 304. A threaded slider 502 is fixedly connected to the middle of the lower end face of the moving table 5. The screw 4 passes through the middle of the threaded slider 502 and is threadedly connected to the threaded slider 502. When the moving table 5 moves on the rotary table 3, it is guided along the guide rails 304 by the guide sliders 501. The second servo motor 401 drives the screw 4 to rotate. Then, through the threaded connection between the screw 4 and the threaded slider 502, the threaded slider 502 drives the moving table 5 to move. When the moving table 5 moves, it drives the tool holder 503 and its tool to approach the rotating valve stem 103 for turning.

[0027] Working principle: In use, the valve stem 103 is first clamped on the three-jaw chuck 102. Then, the drive device 101 is started, which drives the three-jaw chuck 102 to rotate, thereby causing the valve stem 103 to rotate. Next, according to the processing requirements, the first servo motor 201 is started, which drives the worm gear 2 to rotate. The meshing relationship between the worm gear 2 and the worm wheel teeth 302 causes the rotating column 301 to drive the rotating table 3 to rotate. The moving table 5 on the rotating table 3 and the tool holder 503 on it then rotate to the front or rear end of the valve stem 103 to meet the processing requirements of different parts of the valve stem 103. Then, the second servo motor 401 is started, driving the screw 4 to rotate. Due to the threaded connection between the screw 4 and the threaded slider 502, the threaded slider 502 drives the moving table 5 to move linearly along the guide rail 304. The guide slider 501 ensures the stable movement of the moving table 5. The movement of the moving table 5 causes the cutting tool on the cutting tool holder 503 to gradually approach the rotating valve stem 103 for turning. By adjusting the rotation angle of the rotary table 3 and the moving position of the moving table 5, turning of different parts of the valve stem 103 can be achieved, improving processing efficiency and flexibility.

[0028] 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.

Claims

1. An adjustable CNC machining device for valve stems, comprising a worktable (1), characterized in that: A drive device (101) is fixedly installed on one side of the upper end of the workbench (1). A three-jaw chuck (102) is rotatably connected to one side of the drive device (101). A valve stem (103) is clamped on the three-jaw chuck (102). A rotating table (3) is rotatably connected to the middle of the upper surface of the workbench (1). Side plates (303) are fixedly connected to both sides of the upper surface of the rotating table (3). Guide rails (304) are fixedly connected to the front and rear ends of the two side plates (303). A screw (4) is rotatably connected to the middle of the two side plates (303). A moving table (5) is connected to the middle of the upper end of the two guide rails (304). A cutting tool holder (503) is fixedly connected to the upper end of the moving table (5).

2. The adjustable CNC machining device for valve stems according to claim 1, characterized in that: A limiting tube (104) is fixedly connected to the upper surface inside the workbench (1). The upper end of the limiting tube (104) is connected to the upper surface of the workbench (1). A support ring (105) is fixedly connected to the upper surface of the workbench (1) and the upper side of the limiting tube (104).

3. The adjustable CNC machining device for valve stems according to claim 1, characterized in that: A rotating column (301) is fixedly connected to the middle of the lower end of the rotating platform (3). The lower end of the rotating column (301) extends through the middle of the limiting tube (104) into the interior of the worktable (1). A worm gear (302) is fixedly connected to the lower end of the outer end face of the rotating column (301) inside the worktable (1).

4. The adjustable CNC machining device for valve stems according to claim 3, characterized in that: The workbench (1) is rotatably connected to one side of a worm gear (2). A first servo motor (201) is provided at the front end of the worm gear (2). The front end of the worm gear (2) is fixedly connected to the output shaft of the first servo motor (201). One side of the worm gear (2) is meshed with the teeth of the worm wheel (302) on the rotating column (301).

5. The adjustable CNC machining device for valve stems according to claim 1, characterized in that: A second servo motor (401) is fixedly connected to the outer side of the side plate (303) on one side of the upper end of the rotating platform (3), and one end of the screw (4) passes through the middle of the side plate (303) and is fixedly connected to the output shaft of the second servo motor (401).

6. The adjustable CNC machining device for valve stems according to claim 1, characterized in that: Guide sliders (501) are fixedly connected to both ends of the lower end face of the moving platform (5), and the two guide sliders (501) are slidably connected to the two guide rails (304).

7. The adjustable CNC machining device for valve stems according to claim 1, characterized in that: A threaded slider (502) is fixedly connected to the middle of the lower end face of the movable stage (5), and the screw (4) passes through the middle of the threaded slider (502) and is threadedly connected to the threaded slider (502).

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