Swing angle structure of thread grinder

By employing a slide plate and a screw structure driven by a servo motor on a thread grinding machine, the compound linear motion is converted into oscillating motion, solving the backlash problem caused by worm gear transmission and achieving high-precision and low-cost production.

CN223862988UActive Publication Date: 2026-02-03NINGBO JIANYI PRECISION MACHINERY CO LTD
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Patent Information

Application Number
CN202520473551.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-18
Publication Date
2026-02-03
Estimated Expiration
2035-03-18

AI Technical Summary

Technical Problem

The existing thread grinding machine uses a worm gear mechanical transmission for its tilting angle structure. After long-term operation, backlash is easily generated due to wear of the gear pair, which leads to a decrease in product accuracy and frequent downtime for maintenance, increasing production costs.

Method used

By using slide plates I and II to move horizontally along the screw direction, and driving the screw to rotate via a servo motor, the composite linear motion is converted into angular motion, avoiding frequent shutdowns caused by backlash and reducing production costs.

Benefits of technology

It achieves high-precision swing angle motion, has a large transmission ratio, and a compact structure, avoiding frequent downtime maintenance caused by backlash and reducing production costs.

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Abstract

The utility model provides a swing angle structure of a thread grinder, which comprises a sliding plate I, a sliding plate II, a connecting rod, a sliding plate seat, a screw rod, a guide rail I, a support and a servo motor, the sliding plate I and the sliding plate II horizontally move along the direction of the screw rod, and the sliding plate I and the sliding plate II vertically slide relative to each other, so that composite linear motion is converted into swing angle motion. And compared with traditional worm and gear transmission, the transmission ratio is large, the structure is compact, frequent shutdown maintenance caused by reverse gaps is effectively avoided, and the production and manufacturing cost is reduced.
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Description

Technical Field

[0001] This utility model relates to the field of thread grinding machine parts, specifically a tilting angle structure for a thread grinding machine. Background Technology

[0002] Thread grinding machines are devices used for high-precision thread machining. The tilting wheel structure, as the core structure of a thread grinding machine, can dynamically adjust the spatial angular relationship between the grinding wheel and the workpiece, solving the geometric matching problem in thread grinding. Currently, most tilting wheel structures on the market use worm gear mechanical transmission as the angle adjustment mechanism. After long-term operation, backlash can easily occur due to gear wear, leading to decreased product accuracy and requiring frequent downtime for maintenance. This not only increases production costs but also restricts the stability of mass production of parts. Utility Model Content

[0003] In view of the defects of the existing tilting angle structure of thread grinding machines, the technical problem to be solved by this utility model is to provide a tilting angle structure for thread grinding machines that converts compound linear motion into tilting angle motion. Compared with traditional worm gear transmission, it has a large transmission ratio, compact structure, effectively avoids frequent downtime maintenance due to backlash, and reduces production and manufacturing costs.

[0004] To achieve the above objectives, according to one aspect of this utility model, the present utility model is implemented through the following technical measures: a tilting angle structure for a thread grinding machine, comprising a slide plate I, a slide plate II, a connecting rod, a slide plate seat, a screw, a guide rail I, and a bracket. The slide plate I is provided with the guide rail II, one side of the slide plate II is provided with the guide rail III, and the other side is provided with a bearing seat containing a bearing. One end of the connecting rod is movably connected to the bearing. The slide plate I and the slide plate II are arranged opposite to each other, and the guide rail II and the guide rail III are fitted together so that the slide plate I and the slide plate II can slide relative to each other along the guide rail direction. The bracket is provided with a screw and the guide rail I on one side, and a slide plate seat is provided on the screw. The slide plate seat is threadedly connected to the screw. A slider is provided on the guide rail I. The slide plate I is fixedly connected to the slide plate seat and the slider, and the guide rail II is perpendicular to the screw.

[0005] Furthermore, the bracket is equipped with a servo motor, which is connected to the screw via a pulley assembly.

[0006] Furthermore, a protrusion is provided in the middle of one side of the slide plate I, and guide rails II are fixed on both sides of the protrusion. A groove is provided in the middle of one side of the slide plate II, and guide rails III are fixed inside the groove. The protrusion of the slide plate I is embedded in the groove of the slide plate II.

[0007] Furthermore, the guide rail I is mounted on the supports on both sides of the screw.

[0008] Compared with the prior art, the advantages of this utility model are as follows: The tilting angle structure of this thread grinding machine adopts slide plate I and slide plate II to move horizontally along the screw direction, and slide plate I and slide plate II slide vertically relative to each other, realizing the conversion of compound linear motion into tilting angle motion. Compared with the traditional worm gear transmission, the transmission ratio is large, the structure is compact, and it effectively avoids frequent machine downtime for maintenance due to backlash, thus reducing production and manufacturing costs. Attached Figure Description

[0009] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0010] Figure 1 This is an exploded view of the tilting angle structure of a thread grinding machine according to the present invention.

[0011] Explanation of reference numerals in the attached diagram: 1. Slide plate I; 2. Slide plate II; 3. Connecting rod; 4. Slide plate base; 5. Screw; 6. Guide rail I; 7. Bracket; 8. Servo motor; 9. Protrusion; 10. Guide rail II; 11. Groove; 12. Guide rail III; 13. Bearing seat; 14. Bearing; 15. Slider; 16. Pulley assembly. Detailed Implementation

[0012] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0013] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "bottom", "top", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0014] Please refer to Figure 1This embodiment provides a tilting angle structure for a thread grinder, including a slide plate I1, a slide plate II2, a connecting rod 3, a slide plate seat 4, a screw 6, a guide rail I6, a bracket 7, and a servo motor 8. A protrusion 9 is provided in the middle of one side of slide plate I1, and guide rails II10 are fixed on both sides of the protrusion 9. A groove 11 is provided in the middle of one side of slide plate II2, and a guide rail III12 is fixed inside the groove 11. A bearing seat 13 is provided on the other side, and a bearing 14 is installed inside the bearing seat 13. One end of the connecting rod 3 is movably connected to the bearing 14. Slide plate I1 and slide plate II2 are arranged opposite to each other. The protrusion 9 of the slide plate I1 is embedded in the groove 11 of the slide plate II2. The guide rail II10 and guide rail III12 fit together so that the slide plate I1 and the slide plate II2 can slide relative to each other along the guide rail direction. A screw 6 is provided on one side of the bracket 7. A slide plate seat 4 is provided on the screw 6. The slide plate seat 4 is threadedly connected to the screw 6. Guide rail I6 is provided on both sides of the screw 6. A slider 15 is provided on the guide rail I6. The slide plate I1 is fixed to the slide plate seat 4 and the slider 15. The guide rail II10 is perpendicular to the screw 6. The servo motor 8 is provided on the bracket 7 and is connected to the screw 6 through the pulley group 16.

[0015] This embodiment provides a swing angle structure for a thread grinder. During operation, the servo motor 8 drives the screw 6 to rotate through the pulley group 16, causing the slide plate 4 to move on the screw 6. The slide plate 4 drives the slide plate I1 and slide plate II2 to move horizontally relative to the guide rail I6. Since the slide plate II2 is connected to one end of the connecting rod 3, under the constraint of the connecting rod 3 and the cooperation of the guide rail II10 and the guide rail III12, the slide plate II2 moves vertically relative to the slide plate I1. Finally, the slide plate II2 converts the compound linear motion into a swing angle motion and outputs it to one end of the connecting rod 3.

[0016] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various changes and modifications can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tilting angle structure for a thread grinding machine, characterized in that: The system includes a slide plate I (1), a slide plate II (2), a connecting rod (3), a slide plate seat (4), a screw (6), a guide rail I (6), and a bracket (7). The slide plate I (1) is provided with a guide rail II (10), and the slide plate II (2) is provided with a guide rail III (12) on one side and a bearing seat (13) on the other side. The bearing seat (13) contains a bearing (14), and one end of the connecting rod (3) is movably connected to the bearing (14). The slide plate I (1) and the slide plate II (2) are arranged opposite to each other. The guide rail II (10) and guide rail Ⅲ (12) fit together so that slide plate Ⅰ (1) and slide plate Ⅱ (2) can slide relative to each other along the direction of the guide rail; the bracket (7) is provided with screw (6) and guide rail Ⅰ (6) on one side, and slide plate seat (4) is provided on screw (6). Slide plate seat (4) is threadedly connected to screw (6). Slide plate Ⅰ (6) is provided with slider (15). Slide plate Ⅰ (1) is fixedly connected to slide plate seat (4) and slider (15), and guide rail Ⅱ (10) and screw (6) are perpendicular to each other.

2. The tilting angle structure of the thread grinding machine according to claim 1, characterized in that: The bracket (7) is equipped with a servo motor (8), which is connected to the screw (6) via a pulley assembly (16).

3. The tilting angle structure of the thread grinding machine according to claim 1 or 2, characterized in that: The slide plate I (1) has a protrusion (9) in the middle of one side, and guide rails II (10) are fixed on both sides of the protrusion (9). The slide plate II (2) has a groove (11) in the middle of one side, and guide rails III (12) are fixed inside the groove (11). The protrusion (9) of the slide plate I (1) is embedded in the groove (11) of the slide plate II (2).

4. The tilting angle structure of the thread grinding machine according to claim 1 or 2, characterized in that: The guide rail I (6) is mounted on the brackets (7) on both sides of the screw (6).