Worm gear pair detection tool
By designing the worm gear pair detection tools, the complexity and accuracy problems of small-module and large spiral-raising angle worm gear pair detection are solved, and efficient and simple batch inspection is achieved, which is suitable for 1-4 module worm gear pairs.
Patent Information
- Application Number
- CN202422605863.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-28
AI Technical Summary
The existing worm gear pair detection process with small modules and large spiral angles is complicated to operate, has low detection accuracy, poor applicability, and cannot perform batch inspection.
A worm gear pair detection tool is designed, including a circular chassis, V-shaped block and base. Through the arrangement of the central axis and V-shaped block, the parallelism and perpendicularity of the worm gear and worm can be detected, and the coordination between the worm gear and worm is evaluated through the colorant, and the side gap between the worm gear and worm is detected using the center distance limit block.
It realizes high-precision detection of the worm gear pair, which is simple to operate and has strong applicability, and can conduct large-scale batch inspections, which are suitable for 1-4 modules.
Smart Images
Figure CN223259230U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of helicopter parts manufacturing, and particularly relates to a worm gear pair detection tool. Background Art
[0002] A worm gear pair, also known as a worm gear pair, is a staggered axis gear pair consisting of a worm and a mating worm wheel. A worm is a gear with one or more helical teeth, and its pitch surface can be cylindrical, conical, or toroidal. The worm wheel is a large gear meshing with the worm, and its pitch surface is also cylindrical, conical, or toroidal. Worm gear pairs are widely used in lifting machinery, machine tool feed systems, safety brake systems, lifting platforms, and other fields. There are many types of commonly used worm gear pairs, mainly including precision double-lead worm gear pairs, double-lead precision worm gear pairs, secondary enveloping worm gear pairs, and machined worm gear pairs, each used in different situations. The structure of these worm gear pairs has very high dimensional requirements, and multiple tests are required after production. These include worm gear coloring spot and clearance inspection. Only worm gear pairs that pass the inspection can be put into use. Currently, the requirements for worm gear pairs in aircraft actuators are more stringent. Only those that meet high-precision requirements can be used in aircraft. Among them, the inspection of worm gear pairs with small modules and large helix angles is very inconvenient. Not only is the inspection efficiency low, but large-scale batch inspection is also impossible.
[0003] Therefore, there is an urgent need for a worm gear pair detection tool to solve the technical problems of complex operation, low detection accuracy, poor applicability and inability to perform batch detection in the existing worm gear pair detection process with small module and large helix angle. Utility Model Content
[0004] In view of this, the utility model proposes a worm gear pair detection tool, which is applied to the field of aircraft parts manufacturing technology and can solve the technical problems of complex operation, low detection accuracy, poor applicability and inability to perform batch detection in the existing worm gear pair detection process with small module and large helix angle.
[0005] In order to achieve the above technical objectives, the specific technical solutions adopted by this utility model are:
[0006] A worm gear pair inspection tool is used to inspect a worm wheel and a worm that are assembled in combination. The tool comprises a circular chassis for supporting the worm wheel, a V-shaped block and a base for supporting the worm. The circular chassis and the V-shaped block are both arranged on the base. The circular chassis is provided with a central axis that vertically passes through the internal aperture of the worm wheel. The top of the V-shaped block is provided with a V-shaped groove that opens upward. The worm is placed in the V-shaped groove. A center distance limit block is provided on the side of the circular chassis away from the V-shaped block. The center distance limit block is installed on the base by a connecting bolt that vertically passes through the center distance limit block. The center distance limit block is provided with a V-shaped opening that extends horizontally toward the center axis.
[0007] Furthermore, the circular chassis is horizontally fixed on the base, the central axis is set at the center position of the circular chassis, and the V-shaped block and the center distance limit block are respectively located on both horizontal sides of the circular chassis.
[0008] Furthermore, the V-shaped block includes a first V-shaped support block and a second V-shaped support block, both of which extend in the front-to-back direction, the first V-shaped support block and the second V-shaped support block have the same left-right position in the horizontal direction, the rear end of the first V-shaped support block is located in front of the front end of the second V-shaped support block, and there is a distance between the first V-shaped support block and the second V-shaped support block in the front-to-back direction.
[0009] Furthermore, a rectangular groove is provided in the front direction between the rear end of the first V-shaped support block and the front end of the second V-shaped support block, and the right side of the circular chassis extends between the first V-shaped support block and the second V-shaped support block. The diameter length of the circular chassis is greater than the width of the rectangular groove in the front-to-back direction, and inwardly recessed right-angle grooves are provided at the front and rear ends of the right side of the circular chassis. The lateral corners of the first V-shaped support block and the second V-shaped support block near one end of the rectangular groove respectively extend into the corresponding right-angle grooves.
[0010] Furthermore, a connecting nut for fixing the center limit block is provided on the top of the connecting bolt, the lower end of the connecting bolt extends into the interior of the base, and the connecting nut is located at the center position of the center distance from the limit block in the front-to-back direction.
[0011] Furthermore, the center axis is arranged between the connecting nut and the rectangular groove, the horizontal extension line of the connecting bolt and the center axis passes through the center line position of the rectangular groove in the front-to-back direction, and the first V-shaped support block and the second V-shaped support block are symmetrically arranged in the front-to-back direction about the center line of the rectangular groove in the front-to-back direction.
[0012] By adopting the above technical solution, the utility model can also bring the following beneficial effects:
[0013] 1. The utility model mentions a worm gear pair detection tool, which is used to detect the assembly status of the worm wheel and worm in the worm gear pair. Through the setting of the center shaft and the V-block, it can detect on the base whether the parallelism of the two ends of the worm and the base is ≤0.005, and whether the perpendicularity between the two ends of the worm and the center shaft is ≤0.005, so as to detect the parallelism and perpendicularity. In addition, the tooth surface on the worm wheel is coated with colorant, and the rotation of the worm wheel drives the rotation of the worm. After rotating several circles, the worm wheel is removed, and the distribution and width of the colorant on the tooth surface of the worm wheel are observed to evaluate the area of the color spot on the worm wheel and the worm. The size of the color spot can reflect whether the matching condition of the worm wheel and the worm meets the qualified standard. It has the advantages of simple structure, easy operation and the ability to perform large-scale detection in batches.
[0014] 2. The worm gear pair detection tool mentioned in the present invention is very suitable for turbine pairs with modules of 1-4. The position of the worm wheel is controlled by the center distance limit block. Through the setting between the positions of the center shaft, the connecting nut and the rectangular groove, the size of the side clearance between the worm wheel and the worm can be directly detected under the standard center distance, thereby being used to determine the accuracy grade range of the worm gear pair. If the center distance changes, the corresponding detection can be carried out directly by adjusting the horizontal position of the center shaft and the V-block. It has the advantages of strong practicality, suitability for large-scale promotion and very convenient adaptive adjustment. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0016] Figure 1 It is a structural diagram of the utility model;
[0017] Figure 2 For this utility model Figure 1 A top view of
[0018] Figure 3 For this utility model Figure 1 Right view;
[0019] Among them: 1. Circular chassis; 2. V-shaped block; 3. Base; 4. Center axis; 5. V-shaped groove; 6. Center distance limit block; 7. Connecting bolt; 8. V-shaped opening; 9. First V-shaped support block; 10. Second V-shaped support block; 11. Rectangular groove; 12. Right-angle groove; 13. Connecting nut. DETAILED DESCRIPTION
[0020] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0021] The following describes the implementation of the present invention through specific concrete examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The present invention can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0022] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present invention, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.
[0023] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. The illustrations only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.
[0024] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples. However, one skilled in the art will appreciate that the aspects described can be practiced without these specific details.
[0025] In one embodiment of the present invention, Figures 1 to 3As shown, a worm gear pair inspection tool is used to inspect assembled worm wheels and worms, including a circular chassis 1 for supporting the worm wheel, a V-block 2 for supporting the worm, and a base 3. The circular chassis 1 and the V-block 2 are both arranged on the base 3. The circular chassis 1 is provided with a central axis 4 that vertically passes through the internal aperture of the worm wheel. The top of the V-block 2 is provided with a V-shaped groove 5 that opens upward, and the worm is placed in the V-shaped groove 5. The side of the circular chassis 1 away from the V-block 2 is provided with a center distance limit block 6. The center distance limit block 6 is mounted on the base 3 by a connecting bolt 7 that vertically passes through the center distance limit block 6. The center distance limit block 6 is provided with a V-shaped opening 8 that extends horizontally toward the center axis 4. The circular chassis 1 is horizontally fixed to the base 3, and the center axis 4 is set at the center of the circular chassis 1. The V-block 2 and the center distance limit block 6 are respectively located on the horizontal sides of the circular chassis 1.
[0026] The V-shaped block 2 includes a first V-shaped support block 9 and a second V-shaped support block 10. The first V-shaped support block 9 and the second V-shaped support block 10 both extend in the front-to-back direction. The first V-shaped support block 9 and the second V-shaped support block 10 are positioned horizontally in the same left-right position. The rear end of the first V-shaped support block 9 is located in front of the front end of the second V-shaped support block 10. There is a distance between the first V-shaped support block 9 and the second V-shaped support block 10 in the front-to-back direction. A rectangular groove 11 is provided in the front direction between the rear end of the first V-shaped support block 9 and the front end of the second V-shaped support block 10. The right side of the circular chassis 1 extends between the first V-shaped support block 9 and the second V-shaped support block 10. The diameter of the circular chassis 1 is greater than the width of the rectangular groove 11 in the front-to-back direction. The front and rear ends of the right side of the circular chassis 1 are both provided with inwardly recessed right-angle grooves 12. The lateral corners of the first V-shaped support block 9 and the second V-shaped support block 10 near one end of the rectangular groove 11 extend into the corresponding right-angle grooves 12.
[0027] A connecting nut 13 is mounted on the top of the connecting bolt 7, securing the center stopper. The lower end of the connecting bolt 7 extends into the interior of the base 3, with the connecting nut 13 positioned at the center of the stopper 6 in the fore-aft direction. The central axis 4 is disposed between the connecting nut 13 and the rectangular slot 11. The horizontal extension of the connecting bolt 7 and the central axis 4 passes through the fore-aft centerline of the rectangular slot 11. The first V-shaped support block 9 and the second V-shaped support block 10 are symmetrically arranged in the fore-aft direction about the fore-aft centerline of the rectangular slot 11.
[0028] During use, the worm wheel and worm in the worm gear pair are placed on the central shaft 4 and the V-block 2 respectively. The worm wheel is fixed on the central shaft 4, and the worm is installed in the V-groove of the V-block 2. After installation, the parallelism between the two ends of the worm and the base 3 is detected on the base 3 to see if it is ≤0.005, and the perpendicularity between the two ends and the bearing is ≤0.005, so as to perform parallelism and perpendicularity detection. Then, the tooth surface on the worm wheel is coated with colorant, and the worm and worm wheel are driven to rotate by the driving device. After rotating for several circles, the worm wheel is removed to observe the distribution and width of the colorant on the tooth surface of the worm wheel to evaluate the matching condition of the worm wheel and the worm. The width of the colorant on the tooth surface of the worm wheel is not small. If the width of the tooth profile is greater than 80% and is uninterrupted, it means that the worm wheel and worm are in good condition. If the width of the colorant on the tooth profile of a batch of worm wheels is not less than 80% and is uninterrupted after replacing the worm gear for many times, it means that the interchangeability of the worm wheel and worm gear is good. The horizontal position of the center shaft 4 and the V-block 2 is adjusted according to the width of the tooth profile of the worm wheel and worm gear. The size of the gap between the worm wheel and the worm gear can be clearly observed through the setting between the positions of the center shaft 4, the connecting nut 13 and the rectangular groove 11, thereby detecting whether the side clearance inside the worm gear pair is qualified. In short, the utility model has the advantages of simple operation, high detection accuracy, fast detection speed, wide applicability and the ability to perform batch detection.
[0029] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.
Claims
1. A worm gear testing tool for testing a combined assembled worm wheel and worm, characterized by: The invention comprises a circular chassis (1) for supporting a worm wheel, a V-shaped block (2) for supporting a worm, and a base (3). The circular chassis (1) and the V-shaped block (2) are both arranged on the base (3). The circular chassis (1) is provided with a central axis (4) vertically passing through the inner aperture of the worm wheel. The top of the V-shaped block (2) is provided with a V-shaped groove (5) with an opening facing upward. The worm is placed in the V-shaped groove (5). A center distance limiting block (6) is provided on the side of the circular chassis (1) away from the V-shaped block (2). The center distance limiting block (6) is mounted on the base (3) via a connecting bolt (7) vertically passing through the center distance limiting block (6). The center distance limiting block (6) is provided with a V-shaped opening (8) extending horizontally toward the center axis (4).
2. A worm gear testing tool as claimed in claim 1, characterized in that: The circular chassis (1) is fixed horizontally on the base (3), the central axis (4) is arranged at the center of the circular chassis (1), and the V-shaped block (2) and the center distance limit block (6) are respectively located on two horizontal sides of the circular chassis (1).
3. A worm gear testing tool as claimed in claim 2, characterized in that: The V-shaped block (2) comprises a first V-shaped support block (9) and a second V-shaped support block (10), the first V-shaped support block (9) and the second V-shaped support block (10) both extending in the front-to-back direction, the first V-shaped support block (9) and the second V-shaped support block (10) being at the same left-right position in the horizontal direction, the rear end of the first V-shaped support block (9) being located in front of the front end of the second V-shaped support block (10), and the first V-shaped support block (9) and the second V-shaped support block (10) being spaced apart in the front-to-back direction.
4. A worm gear testing tool as claimed in claim 3, characterized in that: A rectangular groove (11) is provided between the rear end of the first V-shaped support block (9) and the front end of the second V-shaped support block (10) in the front direction, and the right side of the circular chassis (1) extends between the first V-shaped support block (9) and the second V-shaped support block (10). The diameter of the circular chassis (1) is greater than the width of the rectangular groove (11) in the front-to-back direction. Inwardly recessed right-angle grooves (12) are provided at both the front and rear ends of the right side of the circular chassis (1), and the lateral angles of the first V-shaped support block (9) and the second V-shaped support block (10) close to one end of the rectangular groove (11) extend into the corresponding right-angle groove (12).
5. A worm gear testing tool as claimed in claim 4, characterized in that: A connecting nut (13) for fixing the center limit block is provided on the top of the connecting bolt (7), the lower end of the connecting bolt (7) extends into the interior of the base (3), and the connecting nut (13) is located at the center position of the limit block (6) in the front-to-back direction.
6. A worm gear testing tool as claimed in claim 5, characterized in that: The central axis (4) is arranged between the connecting nut (13) and the rectangular groove (11); an extension line of the connecting bolt (7) and the central axis (4) in the horizontal direction passes through the center line position of the rectangular groove (11) in the front-to-back direction; and the first V-shaped support block (9) and the second V-shaped support block (10) are symmetrically arranged in the front-to-back direction with respect to the center line of the rectangular groove (11) in the front-to-back direction.