A marking keyway positioning tool

By designing a marking keyway positioning fixture, and utilizing radial fixing components and keyway fixing components, the accuracy of the marking position on the motor shaft is ensured, solving the problem of marking position offset in the existing technology and improving processing efficiency and quality stability.

CN224322506UActive Publication Date: 2026-06-05TIANJIN TIANHAI PRECISION FORGING

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANJIN TIANHAI PRECISION FORGING
Filing Date
2025-04-27
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing fixtures or positioning methods cannot reliably guarantee a 90° fixed angle between the marking position on the motor shaft end face and the keyway, resulting in marking position deviation, which affects product appearance consistency and processing efficiency.

Method used

Design a marking keyway positioning fixture including a base plate, a radial fixing component, and a keyway fixing component. The radial block and the positioning block are used to ensure the accuracy of the keyway position of the motor shaft, and the positioning rod and the marking device are used to achieve a fixed positioning at a 90° angle.

Benefits of technology

It improves the accuracy of marking positions, reduces operator alignment time, lowers costs, avoids customer feedback, and enhances processing efficiency and quality stability.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224322506U_ABST
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Abstract

A marking key groove positioning tool is disclosed in the application, which comprises a bottom plate, a radial fixing assembly and a key groove fixing assembly. The bottom plate is installed on an operation table, and the radial fixing assembly and the key groove fixing assembly are respectively installed on the bottom plate. The radial fixing assembly comprises a first radial block and a second radial block, which are installed on the bottom plate and form a right angle. The first radial block and the second radial block are symmetrically arranged on both sides of the key groove fixing assembly. The application realizes rapid on-site processing, increases the outer circle radial fixation and the key groove fixation by utilizing the product structure characteristics, improves the accuracy of the installation position and ensures the product quality.
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Description

Technical Field

[0001] This utility model belongs to the field of marking technology on the end face of motor shafts, and in particular relates to a marking keyway positioning tool. Background Technology

[0002] Because the end face of the motor shaft needs to be marked (such as laser engraving or steel stamping), and the marking position is required to maintain a fixed 90° angle with the keyway, existing fixtures or positioning methods cannot reliably guarantee angular accuracy, causing the marking position to easily shift. If the marking is not accurate, it will not only affect the consistency of the product appearance, but may also lead to customer complaints, and even cause assembly or traceability problems due to misaligned markings, ultimately affecting processing efficiency and quality stability.

[0003] Disadvantages of existing technology:

[0004] 1. The marking efficiency of operators is low and errors are easy to make.

[0005] 2. The operator needs to align the parts one by one, which is inconvenient.

[0006] 3. Waste of machine tools and personnel. Increased costs. Utility Model Content

[0007] In view of this, the present invention aims to provide a marking keyway positioning fixture to solve at least one technical problem in the background art.

[0008] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0009] A marking keyway positioning fixture includes a base plate, a radial fixing component, and a keyway fixing component;

[0010] The base plate is installed on the operating table, and the radial fixing component and the keyway fixing component are respectively installed on the base plate;

[0011] The radial fixing assembly includes a first radial block and a second radial block, which are mounted on a base plate. The included angle between the first radial block and the second radial block is a right angle.

[0012] The first radial block and the second radial block are symmetrically arranged on both sides of the keyway fixing assembly.

[0013] Furthermore, the base plate has a first strip-shaped hole around its perimeter.

[0014] Furthermore, the base plate is provided with a plurality of first mounting holes for mounting radial fixing components, the positions of the first mounting holes corresponding to the positions of the first radial block or the second radial block;

[0015] The first radial block and the second radial block are connected to the base plate by the first screw.

[0016] Furthermore, the base plate is provided with a mounting groove for installing the keyway fixing assembly, and the mounting groove of the base plate is provided with a second mounting hole.

[0017] Furthermore, the keyway fixing assembly includes an L-shaped support plate and a positioning block; the positioning block is located on the side of the L-shaped support plate away from the horizontal end, and the horizontal end of the L-shaped support plate is installed in the mounting groove.

[0018] Furthermore, the vertical end of the L-shaped support plate is provided with a slot corresponding to the positioning block on the side away from the horizontal end, and the slot at the vertical end of the L-shaped support plate is provided with a second strip hole, and the positioning block is connected to the L-shaped support plate by a second screw.

[0019] The positioning block is connected to the L-shaped support plate via a slot.

[0020] Furthermore, the horizontal end of the L-shaped support plate is provided with a third strip hole, and the horizontal end of the L-shaped support plate is connected to the base plate by a third screw.

[0021] Furthermore, one side of the positioning block corresponds to the shape of the slot, and the other side of the positioning block corresponds to the shape of the first radial block and the second radial block.

[0022] Furthermore, a positioning rod is provided on one side of the positioning block, and the diameter of the positioning rod corresponds to the keyway of the motor shaft.

[0023] Compared with the prior art, the marking keyway positioning fixture of this utility model has the following advantages:

[0024] 1. This application involves in-depth on-site processing to achieve rapid on-site processing. Utilizing the product's structural characteristics, it adds radial fixing to the outer circle and keyway fixing to improve the accuracy of the installation position and ensure product quality.

[0025] 2. This application can save operators time in alignment.

[0026] 3. The increased efficiency of this application eliminates the need to increase operators and personnel, thereby reducing costs.

[0027] 4. The location of this application is accurate and can avoid customer feedback. Attached Figure Description

[0028] 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:

[0029] Figure 1 This is a schematic diagram of a marking keyway positioning fixture according to an embodiment of the present utility model;

[0030] Figure 2This is a schematic diagram of the base plate of a marking keyway positioning fixture according to an embodiment of the present utility model;

[0031] Figure 3 This is a schematic diagram of the installation of the positioning block of a marking keyway positioning fixture according to an embodiment of the present utility model;

[0032] Figure 4 This is a schematic diagram of the positioning block of a marking keyway positioning fixture according to an embodiment of the present invention.

[0033] Figure 5 This is a schematic diagram of an L-shaped support plate for a marking keyway positioning fixture according to an embodiment of the present invention;

[0034] Figure 6 This is a top view of the L-shaped support plate of a marking keyway positioning fixture according to an embodiment of the present utility model;

[0035] Figure 7 This is a side view of the L-shaped support plate of a marking keyway positioning fixture according to an embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Base plate; 2. First radial block; 3. Second radial block; 4. First strip hole; 5. First mounting hole; 6. First screw; 7. Mounting groove; 8. Second mounting hole; 9. L-shaped support plate; 10. Positioning block; 11. Slot; 12. Second strip hole; 13. Second screw; 14. Third strip hole; 15. Third screw; 16. Positioning rod. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0039] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] A marking keyway positioning fixture includes a base plate 1, a radial fixing component, and a keyway fixing component. The base plate 1 is mounted on an operating table, and the radial fixing component and the keyway fixing component are respectively mounted on the base plate 1. The radial fixing component includes a first radial block 2 and a second radial block 3, which are mounted on the base plate 1, and the included angle formed by the first radial block 2 and the second radial block 3 is a right angle. The first radial block 2 and the second radial block 3 are symmetrically arranged on both sides of the keyway fixing component, and the keyway fixing component is installed at the included angle of the first radial block 2 and the second radial block 3.

[0043] The base plate 1 has first strip-shaped holes 4 around its perimeter. The base plate 1 has several first mounting holes 5 for mounting radial fixing components. The positions of the first mounting holes 5 correspond to the positions of the first radial block 2 or the second radial block 3. The first radial block 2 and the second radial block 3 are connected to the base plate 1 by first screws 6.

[0044] The base plate 1 is provided with a mounting groove 7 for mounting the keyway fixing assembly, and the mounting groove 7 of the base plate 1 is provided with a second mounting hole 8. The keyway fixing assembly includes an L-shaped support plate 9 and a positioning block 10; the positioning block 10 is located on the side of the L-shaped support plate 9 away from the horizontal end, and the horizontal end of the L-shaped support plate 9 is installed in the mounting groove 7.

[0045] The vertical end of the L-shaped support plate 9, away from the horizontal end, has a slot 11 corresponding to the positioning block 10. The slot 11 at the vertical end of the L-shaped support plate 9 has a second strip hole 12. The positioning block 10 is connected to the L-shaped support plate 9 by a second screw 13. The positioning block 10 is connected to the L-shaped support plate 9 through the slot 11. The horizontal end of the L-shaped support plate 9 has a third strip hole 14. The horizontal end of the L-shaped support plate 9 is connected to the base plate 1 by a third screw 15.

[0046] One side of the positioning block 10 corresponds to the shape of the slot 11, and the other side of the positioning block 10 corresponds to the shape of the first radial block 2 and the second radial block 3. A positioning rod 16 is provided on one side of the positioning block 10. The diameter of the positioning rod 16 corresponds to the keyway of the motor shaft, and the positioning rod 16 is located at the midpoint of the included angle extension line of the first radial block 2 and the second radial block 3.

[0047] In specific implementation, the first strip hole 4 of the base plate 1 is bolted to the operating table, and the first radial block 2 and the second radial block 3 are installed so that the included angle formed by the extended ends of the first radial block 2 and the second radial block 3 is 90°. The horizontal end of the L-shaped support plate 9 is installed in the mounting groove 7. The positioning block 10 is installed at the vertical end of the L-shaped support plate 9, and the positioning rod 16 of the positioning block 10 is located between the first radial block 2 and the second radial block 3. The positioning block 10 is connected to the vertical end of the L-shaped support plate 9 by the third screw 15, and the horizontal end of the L-shaped support plate 9 is connected to the base plate 1 by the second screw 13.

[0048] The first radial block 2 and the second radial block 3 are tangent to the motor shaft, fixing the cross-section of the motor shaft. They are inserted into the keyway of the motor shaft via the positioning rod 16 on the positioning block 10. While the cross-section is fixed, the position of the keyway is confirmed by the positioning block 10 and the positioning rod 16. The marking device is vertically positioned above the motor shaft, and the marking position is confirmed according to the position of the positioning rod 16 (the marking position forms a 90° angle with the position of the keyway).

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A marking keyway positioning fixture, characterized in that: Includes base plate, radial fixing assembly, and keyway fixing assembly; The base plate is installed on the operating table, and the radial fixing component and the keyway fixing component are respectively installed on the base plate; The radial fixing assembly includes a first radial block and a second radial block, which are mounted on a base plate. The included angle between the first radial block and the second radial block is a right angle. The first radial block and the second radial block are symmetrically arranged on both sides of the keyway fixing assembly.

2. The marking keyway positioning fixture according to claim 1, characterized in that: The base plate has a first strip hole around its perimeter.

3. The marking keyway positioning fixture according to claim 1, characterized in that: The base plate is provided with a number of first mounting holes for mounting radial fixing components, and the positions of the first mounting holes correspond to the positions of the first radial block or the second radial block; The first radial block and the second radial block are connected to the base plate by the first screw.

4. The marking keyway positioning fixture according to claim 1, characterized in that: The base plate is provided with a mounting slot for installing the keyway fixing component, and the mounting slot of the base plate is provided with a second mounting hole.

5. The marking keyway positioning fixture according to claim 4, characterized in that: The keyway fixing assembly includes an L-shaped support plate and a positioning block; the positioning block is located on the side of the L-shaped support plate away from the horizontal end, and the horizontal end of the L-shaped support plate is installed in the mounting groove.

6. The marking keyway positioning fixture according to claim 5, characterized in that: The vertical end of the L-shaped support plate away from the horizontal end has a slot corresponding to the positioning block. The slot at the vertical end of the L-shaped support plate has a second strip hole. The positioning block and the L-shaped support plate are connected by a second screw. The positioning block is connected to the L-shaped support plate through a slot.

7. The marking keyway positioning fixture according to claim 5, characterized in that: The horizontal end of the L-shaped support plate is provided with a third strip hole, and the horizontal end of the L-shaped support plate is connected to the base plate by a third screw.

8. A marking keyway positioning fixture according to claim 5, characterized in that: One side of the positioning block corresponds to the shape of the slot, and the other side of the positioning block corresponds to the shape of the first radial block and the second radial block.

9. A marking keyway positioning fixture according to claim 8, characterized in that: A positioning rod is provided on one side of the positioning block, and the diameter of the positioning rod corresponds to the keyway of the motor shaft.