An annular enveloping worm machining grinder with negative pressure dust collection function

Abstract

The utility model relates to worm processing technical field, and disclose a kind of annular enveloping worm processing grinding machine with negative pressure dust collection function, including rack, the fixed assembly of being equipped with to the worm installation on the rack, the sliding connection of slide is equipped on the rack, the polishing component of being equipped with to the worm processing on the slide, the upper surface of the slide is fixedly connected with telescopic frame, the dust collection head is equipped on the telescopic frame, the bottom end of the dust collection head is inserted with bellow one through the top wall of telescopic frame, the bottom end of bellow one is equipped with collection box through slide, the bottom outer wall of collection box is equipped with the U-shaped pipe frame for cooperation. The utility model generates negative pressure through air suction pump, cooperate dust collection head of horn-shaped flared precision positioning in grinding point vicinity, can powerfully, efficiently carry out capture in the source of dust generation, greatly reduce the diffusion and escape of dust, significantly reduce air pollution.

Description

Technical Field

[0001] This utility model relates to the field of worm gear processing technology, and more specifically to a ring-enveloping worm gear processing grinding machine with negative pressure dust suction function. Background Technology

[0002] The annular envelope worm gear is a high-performance transmission component with advantages such as high load-bearing capacity, high transmission efficiency, and uniform wear. It is widely used in high-end equipment fields. Its tooth surface is a complex spatial curved surface, and the machining accuracy requirements are extremely high. Traditional machining methods include turning, milling, and grinding, among which precision grinding is the core process to ensure the final tooth profile accuracy.

[0003] A search revealed Chinese patent CN216607514U, which discloses a grinding device for worm gear production. This device is suitable for surface grinding of worms of various sizes and can automate the grinding process, resulting in higher grinding efficiency, saving time and effort, and significantly reducing worm wobbling during grinding. However, the grinding process generates a large amount of metal dust and abrasive particles that easily float in the working area, contaminating precision components such as machine tool guideways and lead screws, leading to a decrease in machining accuracy. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a ring-enveloping worm gear grinding machine with negative pressure dust suction function to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a ring-enveloping worm gear grinding machine with negative pressure dust collection function, including a frame, a fixing component for mounting the worm gear on the frame, a slide table slidably connected to the frame, a grinding component for processing the worm gear on the slide table, a telescopic frame fixedly connected to the upper surface of the slide table, a dust collection head on the telescopic frame, a corrugated pipe I inserted through the top wall of the telescopic frame at the bottom end of the dust collection head, a collection box provided through the slide table at the bottom end of the corrugated pipe I, a U-shaped tube frame for cooperating with the collection box at the bottom outer wall, a second corrugated pipe inserted through the other end of the U-shaped tube frame, a fixed frame fixedly connected to the upper surface of the slide table, and a suction pump for cooperating with the second corrugated pipe fixedly connected to the fixed frame.

[0006] As a further embodiment of this utility model, the fixing component includes a three-jaw chuck rotatably connected to one side of the frame via a bearing seat. A drive motor for rotating the three-jaw chuck along the axial direction is fixedly connected to one side of the frame. A ejector seat is slidably connected to the frame and located on the far side of the slide table. A drive component for sliding the ejector seat along the frame is provided on one side of the frame.

[0007] As a further embodiment of this utility model, the drive assembly includes two side plates fixedly connected to one side of the frame, and a lead screw is rotatably connected between the two side plates. The lead screw passes through the slide table and is threadedly connected to a threaded cylinder on the slide table. A drive motor that causes the lead screw to rotate axially is fixedly connected to one side of one of the side plates.

[0008] As a further embodiment of this utility model, the collection box is composed of an upper part and a lower part. The lower part of the collection box is provided with filter cotton. A fixing plate and a perforated plate are respectively fixedly connected to the outer walls of the upper and lower parts of the collection box. A fixing screw is fixedly connected to the lower surface of the fixing plate. The bottom end of the fixing screw passes through the perforated plate and is threadedly connected to a locking knob.

[0009] As a further embodiment of this utility model, an electric push rod is fixedly connected between the upper surface of the slide table and the telescopic frame.

[0010] As a further embodiment of this utility model, the first corrugated pipe is a rubber hose, and the second corrugated pipe is a metal pipe.

[0011] As a further embodiment of this invention, the air inlet of the vacuum cleaner head has a flared, funnel-shaped structure.

[0012] As a further embodiment of this utility model, a sealing rubber ring with the same shape as the side wall of the collection box is provided between the upper and lower halves of the collection box.

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

[0014] 1. This utility model generates negative pressure through a suction pump, which, together with a funnel-shaped flared suction head, is precisely positioned near the grinding point. This allows for powerful and efficient capture of dust at its source, greatly reducing dust diffusion and escape, and significantly lowering air pollution.

[0015] 2. This utility model eliminates the gap or lag between the fixed dust collection device and the moving grinding head by integrating the dust collection component with the grinding slide. This effectively prevents the equipment from being worn down by dust and the resulting decrease in precision, and ensures the long-term stable operation of the equipment and the continuity of the processing process.

[0016] 3. The dust suction head of this utility model is mounted on the slide table via a telescopic frame and an electric push rod. The height of the dust suction head relative to the workpiece surface can be easily adjusted according to the actual diameter of the worm gear being processed, the wear condition of the grinding wheel, or the requirements of different processes. This significantly improves the dust suction efficiency and adaptability to different working conditions, and the adjustment process is simple and quick.

[0017] 4. The dust collection box of this utility model adopts a split structure design, which makes the maintenance and replacement of the filter cotton extremely simple and quick, significantly reducing the downtime of equipment maintenance and reducing the labor and maintenance costs of long-term operation. Attached Figure Description

[0018] Figure 1 This is a front perspective view of the present invention.

[0019] Figure 2 This is a rear perspective view of the present invention.

[0020] Figure 3 This is a surface view of the slide table of this utility model.

[0021] Figure 4 This is a bottom view of the slide table of this utility model.

[0022] Figure 5 This utility model Figure 4 Enlarged view of part A.

[0023] The attached diagram is labeled as follows: 1. Frame; 2. Three-jaw chuck; 3. Drive motor one; 4. Slide table; 5. Ejector pin seat; 6. Side plate; 7. Lead screw; 8. Drive motor two; 9. Grinding component; 10. Telescopic frame; 11. Corrugated pipe one; 12. Electric push rod; 13. Vacuum head; 14. Collection box; 15. U-shaped tube frame; 16. Corrugated pipe two; 17. Fixing frame; 18. Suction pump; 20. Fixing plate; 21. Fixing screw; 22. Perforated plate; 23. Locking knob. Detailed Implementation

[0024] 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.

[0025] Reference Figures 1-5This utility model provides a ring-enveloping worm gear grinding machine with negative pressure dust collection function, including a frame 1, a fixing component for mounting the worm gear on the frame 1, a slide table 4 slidably connected to the frame 1, a grinding component 9 for processing the worm gear on the slide table 4, a telescopic frame 10 fixedly connected to the upper surface of the slide table 4 by bolts, a dust collection head 13 on the telescopic frame 10, a corrugated pipe 11 inserted through the top wall of the telescopic frame 10 at the bottom end of the dust collection head 13, a collection box 14 provided through the bottom end of the corrugated pipe 11 through the slide table 4, a U-shaped tube frame 15 for use with the collection box 14 at the bottom outer wall, a corrugated pipe 16 inserted at the other end of the U-shaped tube frame 15, a corrugated pipe 16 at the top end of the corrugated pipe 16 through the slide table 4, a fixing frame 17 fixedly connected to the upper surface of the slide table 4 by bolts, and a suction pump 18 for use with the corrugated pipe 16 fixedly connected to the fixing frame 17 by bolts.

[0026] The suction pump 18 generates negative pressure, which, together with the flared suction head 13, is precisely positioned near the grinding point. This powerfully and efficiently captures dust at its source, greatly reducing dust diffusion and escape, and significantly reducing air pollution.

[0027] When machining a worm gear, the worm gear workpiece to be machined is first placed on the frame 1. During clamping, one end of the worm gear is firmly clamped by the three-jaw chuck 2, and the other end of the worm gear is pressed by the movable ejector pin 5, forming a stable "one clamp and one press" clamping method. Then, the drive motor 3 is started, driving the three-jaw chuck 2 and the clamped worm gear workpiece to rotate along their own axis.

[0028] The integrated follow-up design of the dust collection component and the grinding slide 4 eliminates the gap or lag between the fixed dust collection device and the moving grinding head, effectively preventing the equipment wear caused by dust from increasing and reducing accuracy, and ensuring the long-term stable operation of the equipment and the continuity of the processing process.

[0029] The grinding component 9 consists of a bracket, a grinding motor, and a grinding wheel. The bracket is fixedly connected to the slide table 4 by bolts, and the grinding motor is fixedly connected to one side of the bracket by bolts. The output end of the grinding motor passes through the bracket and is fixedly connected to the grinding wheel by bolts. When in use, the grinding motor is started to drive the grinding wheel to rotate at high speed to perform grinding operations on the worm.

[0030] The air inlet of the vacuum head 13 has a funnel-shaped flared structure.

[0031] During the grinding process, the suction pump 18 is started. Under the negative pressure generated by the suction pump 18, the dust-laden air is forcefully sucked into the suction head 13 and transported downward to the collection box 14 through the corrugated pipe 11. The suction pump 18 discharges the sucked air to the outside through its exhaust port.

[0032] An electric push rod 12 is fixedly connected to the upper surface of the slide table 4 and the telescopic frame 10 by bolts. Corrugated pipe 11 is a rubber hose and corrugated pipe 2 16 is a metal pipe.

[0033] It should be noted that the electric push rod 12 is existing technology and can be used with magnetic switches, proximity switches or photoelectric switches to achieve precise control of the push rod's extension and retraction displacement. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0034] When the height of the vacuum head 13 needs to be adjusted, the electric push rod 12 is activated to extend and retract, thereby driving the telescopic frame 10 to rise and fall, thus raising or lowering the vacuum head 13 to ensure that it is always in the optimal dust capture position.

[0035] The suction head 13 is mounted on the slide table 4 via the telescopic frame 10 and the electric push rod 12. The height of the suction head 13 relative to the workpiece surface can be easily adjusted according to the actual diameter of the worm gear being processed, the wear condition of the grinding wheel, or the requirements of different processes. This significantly improves the suction efficiency and adaptability to different working conditions, and the adjustment process is simple and quick.

[0036] Furthermore, the fixing assembly includes a three-jaw chuck 2 rotatably connected to one side of the frame 1 via a bearing seat, a drive motor 3 for rotating the three-jaw chuck 2 along the axial direction is fixedly connected to one side of the frame 1 by bolts, a ejector seat 5 is slidably connected to the frame 1 and located far from the slide table 4, and a drive assembly for sliding the ejector seat 5 along the frame 1 is provided on one side of the frame 1.

[0037] It should be noted that the drive motor 3 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.

[0038] Furthermore, the drive assembly includes two side plates 6 that are bolted to one side of the frame 1, with a lead screw 7 rotatably connected between the two side plates 6. The lead screw 7 passes through the slide table 4 and is threadedly connected to a threaded cylinder on the slide table 4. One side of one of the side plates 6 is bolted to a drive motor 8 that rotates the lead screw 7 axially.

[0039] It should be noted that the drive motor 28 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.

[0040] In this application, the inner wall of the threaded cylinder on the slide table 4 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 lead screw 7 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.

[0041] The feed motion of the slide table 4 is controlled by the drive assembly, and the drive motor 8 is started to drive the lead screw 7 to rotate. The rotation motion of the lead screw 7 is converted into the precise linear movement of the slide table 4 through the threaded pair. The movement direction and speed of the slide table 4 are controlled by the drive motor 8 to realize the feed motion of the grinding process. The grinding wheel on the grinding component 9 rotates at high speed and moves along the axial direction of the worm under the drive of the slide table 4 to precisely grind the rotating worm tooth surface.

[0042] In this utility model, the collection box 14 is composed of an upper half and a lower half. The lower half of the collection box 14 is provided with filter cotton. The upper half and the lower half of the collection box 14 are respectively fixedly connected to a fixing plate 20 and a perforated plate 22 by bolts. The lower surface of the fixing plate 20 is welded with a fixing screw 21. The bottom end of the fixing screw 21 passes through the perforated plate 22 and is threadedly connected to a locking knob 23.

[0043] The dust collection box 14 adopts a split structure design, which makes the maintenance and replacement of the filter cotton extremely simple and quick, significantly reducing equipment downtime and lowering long-term labor and maintenance costs.

[0044] Furthermore, a sealing rubber ring with the same shape as the side wall of the collection box 14 is provided between the upper and lower halves of the collection box 14.

[0045] When the filter cotton in the lower half of the collection box 14 is saturated with dust and needs to be replaced or cleaned, first loosen the locking knob 23 at the connection between the upper and lower halves of the collection box 14, separate the upper and lower halves of the collection box 14, remove and clean the filter cotton in the lower half. When reassembling, ensure that the sealing rubber ring placed at the joint surface of the upper and lower halves is intact and correctly positioned to ensure the sealing of the collection box 14 and prevent air leakage from affecting the dust collection effect. Pass the fixing screw 21 through the perforated plate 22 and tighten the upper and lower halves again with the locking knob 23.

[0046] The use of this utility model involves the following steps:

[0047] S1: First, the worm gear workpiece to be processed is placed on the frame 1. During clamping, one end of the worm gear is firmly clamped by the three-jaw chuck 2, and the other end of the worm gear is pressed by the movable ejector pin seat 5, forming a stable "one clamp and one press" clamping method. Then, the drive motor 3 is started, driving the three-jaw chuck 2 and the clamped worm gear workpiece to rotate along their own axis.

[0048] S2: Then, the feed motion of the slide table 4 is controlled by the drive assembly, and the drive motor 8 is started to drive the lead screw 7 to rotate. The rotation motion of the lead screw 7 is converted into the precise linear movement of the slide table 4 through the threaded pair. The movement direction and speed of the slide table 4 are controlled by the drive motor 8 to realize the feed motion of the grinding process. The grinding wheel on the grinding component 9 rotates at high speed and moves along the axial direction of the worm under the drive of the slide table 4 to precisely grind the rotating worm tooth surface.

[0049] S3: During the grinding process, the suction pump 18 is started. Under the negative pressure generated by the suction pump 18, the dust-laden air is forcefully sucked into the suction head 13 and transported downward to the collection box 14 through the corrugated pipe 11. The suction pump 18 discharges the sucked air to the outside through its exhaust port.

[0050] S4: When it is necessary to adjust the height of the vacuum head 13, start the electric push rod 12 to extend and retract, thereby driving the telescopic frame 10 to rise and fall, thereby raising or lowering the vacuum head 13 to ensure that it is always in the best dust capture position.

[0051] S5: When the filter cotton in the lower half of the collection box 14 is saturated with dust and needs to be replaced or cleaned, first loosen the locking knob 23 at the connection between the upper and lower halves of the collection box 14, separate the upper and lower halves of the collection box 14, take out and clean the filter cotton in the lower half. When reassembling, ensure that the sealing rubber ring placed at the joint surface of the upper and lower halves is intact and correctly positioned to ensure the sealing of the collection box 14 and prevent air leakage from affecting the dust collection effect. Pass the fixing screw 21 through the perforated plate 22 and tighten the upper and lower halves again with the locking knob 23.

[0052] 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.

[0053] 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.

[0054] 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. A ring-shaped worm gear grinding machine with negative pressure dust collection function, comprising a frame (1), characterized in that: The frame (1) is provided with a fixing assembly for mounting the worm gear. A slide table (4) is slidably connected to the frame (1). A grinding component (9) for processing the worm gear is provided on the slide table (4). A telescopic frame (10) is fixedly connected to the upper surface of the slide table (4). A dust suction head (13) is provided on the telescopic frame (10). The bottom end of the dust suction head (13) passes through the top wall of the telescopic frame (10) and is inserted into a corrugated pipe (11). A collection box (14) is provided at the bottom end through the slide table (4). A U-shaped tube frame (15) is provided on the bottom outer wall of the collection box (14) for use with it. A corrugated pipe (16) is inserted at the other end of the U-shaped tube frame (15). The top end of the corrugated pipe (16) passes through the slide table (4). A fixing frame (17) is fixedly connected to the upper surface of the slide table (4). A suction pump (18) for use with the corrugated pipe (16) is fixedly connected to the fixing frame (17).

2. The annular envelope worm gear machining grinding machine with negative pressure dust suction function according to claim 1, characterized in that: The fixing assembly includes a three-jaw chuck (2) rotatably connected to one side of the frame (1) via a bearing seat. A drive motor (3) for rotating the three-jaw chuck (2) along the axial direction is fixedly connected to one side of the frame (1). A ejector seat (5) is slidably connected to the frame (1) and located far from the slide table (4). A drive assembly for sliding the ejector seat (5) along the frame (1) is provided on one side of the frame (1).

3. A ring-shaped worm gear machining grinding machine with negative pressure dust suction function according to claim 2, characterized in that: The drive assembly includes two side plates (6) fixedly connected to one side of the frame (1), and a lead screw (7) is rotatably connected between the two side plates (6). The lead screw (7) passes through the slide (4) and is threadedly connected to the threaded cylinder on the slide (4). One side of one of the side plates (6) is fixedly connected to a second drive motor (8) that causes the lead screw (7) to rotate along the axial direction.

4. A ring-shaped worm gear machining grinding machine with negative pressure dust suction function according to claim 1, characterized in that: The collection box (14) consists of an upper part and a lower part. The lower part of the collection box (14) is provided with filter cotton. The upper part and the lower part of the collection box (14) are respectively fixedly connected to a fixing plate (20) and a perforated plate (22). The lower surface of the fixing plate (20) is fixedly connected to a fixing screw (21). The bottom end of the fixing screw (21) passes through the perforated plate (22) and is threadedly connected to a locking knob (23).

5. A ring-shaped worm gear machining grinding machine with negative pressure dust extraction function according to claim 1, characterized in that: An electric push rod (12) is fixedly connected between the upper surface of the slide (4) and the telescopic frame (10).

6. A ring-shaped worm gear machining grinding machine with negative pressure dust extraction function according to claim 1, characterized in that: The first corrugated pipe (11) is a rubber hose, and the second corrugated pipe (16) is a metal pipe.

7. A ring-shaped worm gear machining grinding machine with negative pressure dust suction function according to claim 1, characterized in that: The air inlet of the vacuum head (13) has a funnel-shaped flared structure.

8. A ring-shaped worm gear machining grinding machine with negative pressure dust suction function according to claim 4, characterized in that: A sealing rubber ring with the same shape as the side wall of the collection box (14) is provided between the upper and lower halves of the collection box (14).

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