Shaft hole detection tool

Abstract

The utility model provides a shaft hole detection tool, which comprises a positioning piece and a detection rod, and is characterized in that the positioning piece is internally provided with an accommodating groove for accommodating a to-be-detected output shaft, and the groove wall of the accommodating groove is attached to the outer circle of the output shaft; one end of the detection rod is inserted into the positioning piece, the other end of the detection rod is located in the containing groove, the length direction of the detection rod is the radial direction of the arc where the groove wall of the containing groove is located, and when the output shaft is located in the containing groove, one end of the detection rod is used for being inserted into the through hole of the output shaft. The outer diameter of the detection rod is in clearance fit with the inner diameter of the through hole of the output shaft. The shaft hole detection tool provided by the utility model can improve the detection efficiency of the shaft hole.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of motor processing, and particularly relates to a shaft hole detection tool. BACKGROUND

[0002] In order to connect the output shaft of the motor with other devices, at least two through holes are generally arranged on the output shaft of the motor, and the two through holes are distributed along the axial direction of the output shaft. The extension direction of each through hole is perpendicular to the axial direction of the output shaft. Each through hole is theoretically symmetrically distributed about the axis of the output shaft.

[0003] In the related art, in order to ensure that each through hole is symmetrically distributed about the axis of the output shaft, a shaft hole detection tool is needed to detect the symmetry of each through hole. The shaft hole detection tool is generally a needle gauge. During detection, the position of the output shaft is adjusted so that the axis of the through hole and the axis of the output shaft are both located in a horizontal plane. Then the needle gauge is inserted into the through hole and fixed. The minimum distances from the upper and lower sides of the needle gauge to the opposite sides of the outer circle of the output shaft are detected. If the minimum distances from the upper and lower sides of the needle gauge to the opposite sides of the outer circle are not the same, it indicates that the symmetry of the through hole does not meet the requirements.

[0004] However, in order to improve the detection accuracy, a plurality of detection positions need to be provided in the needle gauge to respectively detect the distances from the upper and lower sides of each detection position to the opposite sides of the outer circle of the output shaft, which will result in low detection efficiency. CONTENT OF THE INVENTION

[0005] The embodiment of the present disclosure provides a shaft hole detection tool, which can improve the detection efficiency of the shaft hole. The technical solution is as follows:

[0006] The embodiment of the present disclosure provides a shaft hole detection tool, which comprises a positioning member and a detection rod. The positioning member has a containing groove for containing the output shaft to be detected, and the groove wall of the containing groove is in contact with the outer circle of the output shaft. One end of the detection rod is inserted into the positioning member, and the other end is located in the containing groove. The length direction of the detection rod is the radial direction of the arc on which the groove wall of the containing groove is located. When the output shaft is located in the containing groove, one end of the detection rod is used for being inserted into the through hole of the output shaft, and the outer diameter of the detection rod and the inner diameter of the through hole of the output shaft are in clearance fit.

[0007] In another implementation manner in the present disclosure, the opening of the containing groove is located on the first side surface of the positioning member, and the two ends of the containing groove along the axis thereof are respectively located on the second side surface and the third side surface of the positioning member. The second side surface and the third side surface are located on the opposite sides of the first side surface and are connected with the first side surface.

[0008] In still another implementation manner of the present disclosure, the accommodating groove is a semicircular groove, and the accommodating grooves are symmetrically distributed about the central axis of the detection rod.

[0009] In still another implementation manner of the present disclosure, the positioning member comprises a bottom plate and a positioning block, the positioning block is located on a plate surface of the bottom plate and connected with the bottom plate, the positioning block is a rectangular block, the area of the side surface of the positioning block connected with the bottom plate is less than the area of the bottom plate, and the accommodating groove is located on a side surface of the positioning block away from the bottom plate.

[0010] In still another implementation manner of the present disclosure, the positioning member has a limiting hole, one end of the limiting hole is in communication with the accommodating groove, the axis direction of the limiting hole is the radial direction of the arc of the groove wall of the accommodating groove, the detection rod is located in the limiting hole and protrudes out of the limiting hole at one end, and the detection rod is in interference fit with the limiting hole.

[0011] In still another implementation manner of the present disclosure, the detection rod is a cylindrical structural member and comprises a detection section and an insertion section, the insertion section is connected with one end of the detection section, the outer diameter of the insertion section is not greater than the outer diameter of the detection section, and the detection section is located in the accommodating groove.

[0012] In still another implementation manner of the present disclosure, the insertion section is two, and the two insertion sections are respectively located at the two ends of the axis of the detection section and connected with the opposite two ends of the detection section.

[0013] In still another implementation manner of the present disclosure, the outer diameter of the insertion section gradually increases along the direction from the insertion section to the detection section.

[0014] In still another implementation manner of the present disclosure, the detection rod is a metal rod, and the surface roughness of the detection rod is not greater than 0.4.

[0015] In still another implementation manner of the present disclosure, the length of the detection rod protruding out of the limiting hole is not less than 10 mm.

[0016] The technical scheme provided by the embodiment of the present disclosure has the following beneficial effects:

[0017] When the shaft hole detection tool is used to detect the symmetry of the through hole on the output shaft of the motor, since the shaft hole detection tool comprises a positioning member and a detection rod, and the positioning member has an accommodating groove for accommodating the output shaft to be detected, the groove wall of the accommodating groove is in close contact with the outer circle of the output shaft, so that when the detection is performed, the output shaft provided with the through hole part can be placed in the accommodating groove of the positioning member, and the outer circle of the output shaft is in close contact with the groove wall of the accommodating groove.

[0018] Since one end of the detection rod is inserted into the positioning component and the other end is located in the receiving groove, the length direction of the detection rod is radially along the arc of the receiving groove wall. When the output shaft is located in the receiving groove, one end of the detection rod is used to insert into the through hole of the output shaft. Therefore, after the output shaft is placed in the receiving groove, the position of the output shaft relative to the receiving groove can be adjusted so that one end of the detection rod can be located in the through hole of the output shaft. If the detection rod cannot be smoothly inserted into the through hole, it indicates that the axis of the through hole is not along the radial direction of the output shaft, and the symmetry of the through hole does not meet the requirements. Conversely, if the detection rod can be smoothly inserted into the through hole, it indicates that the axis of the through hole extends radially along the output shaft, and the symmetry of the through hole meets the requirements.

[0019] As can be seen, the above shaft hole inspection tools can quickly detect the symmetry of the through holes on the output shaft, with high inspection efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a shaft hole inspection tool provided in an embodiment of the present disclosure;

[0022] Figure 2 for Figure 1 A schematic diagram of the positioning component in the diagram;

[0023] Figure 3 for Figure 2 Side view;

[0024] Figure 4 for Figure 2 Top view;

[0025] Figure 5 for Figure 1 Schematic diagram of the structure of the detection rod;

[0026] Figure 6 for Figure 5 A cross-sectional view along the AA direction.

[0027] The symbols in the diagram represent the following meanings:

[0028] 1. Positioning component; 101. Receiving groove; 102. Limiting hole; 11. Base plate; 12. Positioning block;

[0029] 2. Detection rod; 21. Detection section; 22. Insertion section. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to the drawings.

[0031] The present disclosure provides a shaft hole detection tool, as shown in the drawings, which comprises a positioning member 1 and a detection rod 2. Figure 1 The positioning member 1 has an arc-shaped accommodating groove 101 for accommodating the output shaft to be detected, and the groove wall of the accommodating groove 101 is in contact with the outer circle of the output shaft.

[0032] One end of the detection rod 2 is inserted into the positioning member 1, and the other end is located in the accommodating groove 101. The length direction of the detection rod 2 is the radial direction of the arc-shaped groove wall of the accommodating groove 101. When the output shaft is located in the accommodating groove 101, the other end of the detection rod 2 is used for inserting into the through hole of the output shaft. The outer diameter of the detection rod 2 and the inner diameter of the through hole of the output shaft are in clearance fit.

[0033] When the shaft hole detection tool provided by the present disclosure is used to detect the symmetry of the through hole on the output shaft of the motor, the shaft hole detection tool comprises a positioning member 1 and a detection rod 2. The positioning member 1 has an accommodating groove 101 for accommodating the output shaft to be detected. The accommodating groove 101 is an arc-shaped groove, and the groove wall of the accommodating groove 101 is in contact with the outer circle of the output shaft. Therefore, when detecting, the output shaft provided with the through hole part can be placed in the accommodating groove 101 of the positioning member 1, and the outer circle of the output shaft is in contact with the groove wall of the accommodating groove 101.

[0034] Since one end of the detection rod 2 is located in the accommodating groove 101, and the other end is connected with the positioning member 1, the length direction of the detection rod 2 is the radial direction of the arc-shaped groove wall of the accommodating groove 101. When the output shaft is located in the accommodating groove 101, one end of the detection rod 2 is used for inserting into the through hole of the output shaft. Therefore, after the output shaft is placed in the accommodating groove 101, the position of the output shaft relative to the accommodating groove 101 can be adjusted, so that one end of the detection rod 2 can be located in the through hole of the output shaft. If the detection rod 2 cannot be smoothly inserted into the through hole, it indicates that the axis of the through hole is not along the radial direction of the output shaft, and the symmetry of the through hole cannot meet the requirements. If the detection rod 2 can be smoothly inserted into the through hole, it indicates that the axis of the through hole extends along the radial direction of the output shaft, and the symmetry of the through hole meets the requirements.

[0035] It can be seen that the above shaft hole detection tool can quickly detect the symmetry of the through hole on the output shaft, and the detection efficiency is high.

[0036] Figure 2 The structure of the positioning member in Figure 1 is shown in the drawings, and the structure of the positioning member is shown in the drawings. Figure 2Optionally, the positioning member 1 is a block structure. The opening of the receiving groove 101 is located on the first side of the positioning member 1, and the two ends of the receiving groove 101 along its own axis are located on the second side and the third side of the positioning member 1, respectively. The second side and the third side are located on opposite sides of the first side and are connected to the first side.

[0037] In the above implementation, the positioning element 1 is set as a block structure, which not only facilitates the arrangement of the receiving groove 101, but also facilitates the setting of the detection rod 2.

[0038] Furthermore, the opening of the receiving groove 101 is set to be from the first side of the positioning member 1, and the two ends of the receiving groove 101 along its own axis are respectively located on the second side and the third side of the positioning member 1. This makes both ends of the receiving groove 101 along its own axis open, which facilitates the arrangement of the output shaft in the receiving groove 101.

[0039] In other examples, the positioning element 1 can also be other structures, such as a plate-like structure. The receiving groove 101 can also be a structure with one end closed and the other end open.

[0040] Figure 3 for Figure 2 The side view, combined with Figure 3 Optionally, the receiving groove 101 is a semi-circular groove, and the receiving groove 101 is symmetrically distributed about the central axis of the detection rod 2.

[0041] In the above implementation, the receiving groove 101 is set as a semi-circular groove, which allows the output shaft to fit together with the receiving groove 101 when it is placed horizontally, ensuring that the output shaft can be placed stably in the receiving groove 101 without moving arbitrarily.

[0042] The receiving groove 101 is symmetrically distributed about the central axis of the detection rod 2, so that the detection rod 2 is located at the center of the arc length direction of the receiving groove 101. When the output shaft is placed in the receiving groove 101, it is convenient to adjust the through hole to be coaxially arranged with the detection rod 2, thereby facilitating the insertion of the detection rod 2 into the through hole of the output shaft.

[0043] In other examples, the receiving groove 101 may also be a circular groove or an arc-shaped structure with a central angle greater than 60 degrees corresponding to the arc length.

[0044] Figure 4 for Figure 2 Top view, combined Figure 4 Optionally, the positioning element 1 includes a base plate 11 and a positioning block 12, the positioning block 12 being located on one surface of the base plate 11 and connected to the base plate 11.

[0045] The positioning block 12 is a rectangular block, the area of the side surface of the positioning block 12 connected with the bottom plate 11 is less than the area of the bottom plate 11, and the accommodating groove 101 is located on the side surface of the positioning block 12 away from the bottom plate 11.

[0046] In the above implementation manner, the bottom plate 11 is used to place the positioning member 1 on a detection platform, and provides a mounting base for the positioning block 12.

[0047] The positioning block 12 is used to define the accommodating groove 101, so that the output shaft can be placed in the accommodating groove 101.

[0048] In other examples, the positioning member 1 can also be other structures, such as an integrally cast block structure and the like.

[0049] In combination with Figure 2 , Figure 3 and Figure 4 , optionally, the positioning member 1 has a limiting hole 102, one end of the limiting hole 102 is in communication with the accommodating groove 101, and the axis direction of the limiting hole 102 is the radial direction of the arc-shaped groove wall of the accommodating groove 101.

[0050] In combination with Figure 1 , the detection rod 2 is located in the limiting hole 102 and protrudes out of the limiting hole 102 at one end, and the detection rod 2 is in interference fit with the limiting hole 102.

[0051] In the above implementation manner, the limiting hole 102 is provided to facilitate the insertion of the detection rod 2, so that the detection rod 2 can be fixedly connected to the positioning member 1.

[0052] In other examples, the detection rod 2 can also be an integral structure with the positioning member 1.

[0053] Figure 5 For Figure 1 the structural schematic view of the detection rod, Figure 6 is Figure 5 a sectional view along the A-A direction, in combination with Figure 5 and Figure 6 , optionally, the detection rod 2 is a cylindrical structure and includes a detection section 21 and an insertion section 22, the insertion section 22 is connected to the detection section 21 at one end of the accommodating groove 101, the outer diameter of the insertion section 22 is not greater than the outer diameter of the detection section 21, and part of the detection section 21 is located in the accommodating groove 101.

[0054] In the above implementation manner, the detection section 21 is provided to cooperate with the through hole, so as to detect the symmetry of the through hole by whether the detection section 21 can be inserted in the through hole. The insertion section 22 is provided to facilitate the insertion of the detection section 21 in the through hole.

[0055] Optionally, the two insertion sections 22 are respectively located at two ends of the axis of the detection section 21 and are respectively connected with the opposite two ends of the detection section 21.

[0056] In the above implementation, the two insertion sections 22 are provided, so that when the two ends of the detection rod 2 are respectively inserted into the limiting hole 102 and the through hole, the insertion is facilitated.

[0057] Optionally, the outer diameter of the insertion section 22 gradually increases along the direction from the insertion section 22 to the detection section 21.

[0058] In the above implementation, the outer diameter of the insertion section 22 gradually increases along the direction from the insertion section 22 to the detection section 21, so that when the detection rod 2 is respectively inserted into the limiting hole 102 and the through hole, the detection rod 2 is guided to be quickly inserted.

[0059] Optionally, the detection rod 2 is a metal rod, and the surface roughness of the detection rod 2 is not greater than 0.4.

[0060] In the above implementation, the detection rod 2 is provided as a metal rod, so that the service life of the shaft hole detection tool is improved. Moreover, the surface roughness of the detection rod 2 is set to be not greater than 0.4, so that the surface smoothness of the detection rod 2 meets the requirements and the possibility of damage to the through hole caused by the detection rod 2 after being inserted into the through hole is reduced.

[0061] In combination with Figure 1 Optionally, the length of the detection rod 2 protruding outside the limiting hole 102 is not less than 10 mm.

[0062] In the above implementation, the length of the detection rod 2 protruding outside the positioning member 1 and located in the accommodating groove 101 (i.e., the length L in the figure) is not less than 10 mm, so that the insertion length of the detection rod 2 after being inserted into the through hole is avoided to be too short to affect the accuracy of detection. Figure 1

[0063] The use process of the shaft hole detection tool provided by the embodiment of the present disclosure will be briefly introduced as follows:

[0064] When the symmetry of the through hole on the output shaft of the motor is detected by the shaft hole detection tool provided by the embodiment of the present disclosure, the output shaft provided with the through hole is first placed in the accommodating groove 101 of the positioning member 1, and the outer circle of the output shaft is fitted with the groove wall of the accommodating groove 101.

[0065] ​Then, the position of the output shaft relative to the accommodating groove 101 is adjusted so that the detection rod 2 can be aligned with the through hole of the output shaft. If the detection rod 2 cannot be smoothly inserted into the through hole, it indicates that the axis of the through hole is not along the radial direction of the output shaft, and the symmetry of the through hole cannot meet the requirements. If the detection rod 2 can be smoothly inserted into the through hole, it indicates that the axis of the through hole is along the radial direction of the output shaft, and the symmetry of the through hole meets the requirements.

[0066] The above is only an optional embodiment of the present disclosure, and is not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A bore alignment tool, characterized by, The shaft hole detection tool comprises a positioning member (1) and a detection rod (2), the positioning member (1) has a containing groove (101) for containing an output shaft to be detected, and the groove wall of the containing groove (101) is fitted with the outer circle of the output shaft; One end of the detection rod (2) is inserted into the positioning member (1), and the other end is located in the containing groove (101), the length direction of the detection rod (2) is the radial direction of the arc where the groove wall of the containing groove (101) is located, and when the output shaft is located in the containing groove (101), the other end of the detection rod (2) is used for being inserted into the through hole of the output shaft, and the outer diameter of the detection rod (2) and the inner diameter of the through hole of the output shaft are gap fitted.

2. The bore alignment tool of claim 1, wherein, The opening of the containing groove (101) is located on the first side of the positioning member (1), and the two ends of the containing groove (101) along the axis are located on the second side and the third side of the positioning member (1) respectively, and the second side and the third side are located on the opposite sides of the first side and connected with the first side.

3. The bore alignment tool of claim 2, wherein, The containing groove (101) is a semicircular groove, and the containing groove (101) is symmetrically distributed about the center axis of the detection rod (2).

4. The bore alignment tool of claim 3, wherein, The positioning member (1) comprises a bottom plate (11) and a positioning block (12), the positioning block (12) is located on one plate surface of the bottom plate (11) and connected with the bottom plate (11); The positioning block (12) is a rectangular block, the area of the side surface connected with the bottom plate (11) of the positioning block (12) is smaller than the area of the bottom plate (11), and the containing groove (101) is located on the side surface of the positioning block (12) away from the bottom plate (11).

5. The bore inspection tool of any one of claims 1-4, wherein, The positioning member (1) has a limiting hole (102), one end of the limiting hole (102) is communicated with the containing groove (101), and the axis direction of the limiting hole (102) is the radial direction of the arc where the groove wall of the containing groove (101) is located; The detection rod (2) is located in the limiting hole (102) and protrudes out of the limiting hole (102) at one end, and the detection rod (2) is interference fitted with the limiting hole (102).

6. The bore inspection tool of any one of claims 1-4, wherein, The detection rod (2) is a cylindrical structure and comprises a detection segment (21) and an insertion segment (22), the insertion segment (22) is connected with one end of the detection segment (21), the outer diameter of the insertion segment (22) is not greater than the outer diameter of the detection segment (21), and the detection segment (21) is located in the containing groove (101).

7. The bore alignment tool of claim 6, wherein, The insertion segment (22) is two, and the two insertion segments (22) are respectively located at the two ends of the axis of the detection segment (21) and connected with the opposite ends of the detection segment (21) respectively.

8. The bore alignment tool of claim 6, wherein, The outer diameter of the insertion segment (22) gradually increases along the direction from the insertion segment (22) to the detection segment (21).

9. The bore alignment tool of claim 5, wherein, The detection rod (2) is a metal rod, and the surface roughness of the detection rod (2) is not greater than 0.

4.

10. The bore alignment tool of claim 5, wherein, The length of the detection rod (2) protruding out of the limiting hole (102) is not less than 10 mm.

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