Hole site testing fixture for shaft end workpiece

Abstract

The utility model provides a hole site detection tool for a shaft end workpiece, and the tool comprises a pedestal assembly and a detection pin assembly, the pedestal assembly comprises a pedestal, the pedestal is provided with a positioning column and a detection hole, the positioning column is in insertion fit with a main shaft hole site of a to-be-detected workpiece, and the detection hole is disposed corresponding to a to-be-detected hole site of the to-be-detected workpiece; the detection pin assembly comprises a plurality of detection pins, and the detection pins are inserted and matched with the detection holes; the detection pin is of a multi-diameter segmented structure and comprises a narrow section located on the lower portion and a wide section located on the upper portion. The diameter of the narrow section is smaller than the lower diameter limit of the to-be-detected hole site, and the diameter of the wide section is larger than the upper diameter limit of the detected hole site. The positioning column on the base can be used for positioning the main shaft hole position of the workpiece, the detection pin is matched with the detection hole after positioning to quickly realize hole position detection, and the detection of the upper limit and the lower limit of the bore diameter tolerance can be realized, so that the hole position and bore diameter full-parameter detection is realized, the detection precision and the detection efficiency of the shaft end workpiece are improved, and the detection cost is reduced. The warehousing time is shortened and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of machining technology for shaft end cap parts, and more specifically, to a hole position gauge for shaft end workpieces. Background Technology

[0002] In the production of mechanical parts, some shaft end caps with special assembly requirements are often used to mate with bearings and shafts, so the positional accuracy of their holes is critical, requiring full inspection during production and warehousing. Currently, common methods include manual measurement, full inspection using CMM (Coordinate Measuring Machine) equipment, and measurement using simple tools. Manual measurement is inefficient and costly; CMM equipment offers excessive precision but is expensive and involves cumbersome retrieval processes; while existing simple tools can achieve quick hole position inspection, they only provide preliminary verification and cannot perform full inspection of parameters such as hole diameter. For example, Chinese patent CN201920692242.X discloses an auxiliary product positional accuracy rapid determination fixture, which can only detect hole position but cannot determine hole diameter. Therefore, an improved hole position inspection fixture is needed. Utility Model Content

[0003] This application provides a hole position inspection tool for shaft end workpieces to solve the problems of low efficiency and incomplete hole position and diameter detection in the prior art for hole position detection of shaft end cover parts.

[0004] A hole position inspection tool for a shaft end workpiece according to this application includes:

[0005] The base assembly includes a base, on which a positioning post and a detection hole are provided. The positioning post is inserted into the spindle hole of the workpiece to be inspected, and the detection hole is set to correspond to the detection hole of the workpiece to be inspected.

[0006] The detection pin assembly includes several detection pins that are inserted into detection holes. The detection pins have a multi-diameter segmented structure, including a narrow section at the bottom and a wide section at the top. The diameter of the narrow section is smaller than the lower limit of the diameter of the hole to be inspected, and the diameter of the wide section is larger than the upper limit of the diameter of the detection hole.

[0007] In some embodiments, the detection pin includes: a pin body and an adjusting ring; the lower part of the pin body is exposed, forming a narrow section; the upper part of the pin body is fitted with the adjusting ring, forming a wide section.

[0008] In some embodiments, a recessed platform is provided on the upper end face of the pin, and a gap is formed between the pin and the side wall of the adjusting ring through the recessed platform.

[0009] In some embodiments, the pins are provided with multiple sets of different diameters; the adjusting rings are provided with multiple sets of different diameters and different thicknesses.

[0010] In some embodiments, the lower section of the pin body is provided with a pin section, the pin section being matched with the size of the detection hole, and the lower end of the pin section having a rounded head structure.

[0011] In some embodiments, the base is further provided with a recess, and there are two sets of recesses, which are located on both sides of the positioning post and extend to the bottom of the workpiece to be inspected.

[0012] In some embodiments, the base is further provided with movable columns, and multiple movable columns are provided, which are circumferentially distributed on the outer side of the upper surface of the base.

[0013] In some embodiments, the surface of the base that contacts the workpiece to be inspected, as well as the outer surface of the positioning column, are both treated with a smooth surface.

[0014] In some embodiments, the hole position gauge for the shaft end workpiece further includes: a traveling assembly; a threaded hole is provided on the base, and the base is fixedly connected to the traveling assembly through a fastening bolt inserted in the threaded hole.

[0015] In some embodiments, the hole position gauge for the shaft end workpiece further includes: an end face inspection component; the end face inspection component includes: a bracket and a flatness inspection mechanism, the flatness inspection mechanism being vertically and horizontally slidably mounted above the base via the bracket.

[0016] The hole position inspection fixture for shaft-end workpieces using the technical solution of this application includes: a base assembly and an inspection pin assembly. The base assembly includes a base with a positioning pin and an inspection hole. The positioning pin is inserted into the spindle hole of the workpiece to be inspected, and the inspection hole corresponds to the hole position to be inspected on the workpiece. The inspection pin assembly includes several inspection pins, which are inserted into the inspection holes. The inspection pins have a multi-diameter segmented structure, including a narrow section at the bottom and a wide section at the top. The diameter of the narrow section is smaller than the lower limit of the diameter of the hole to be inspected, and the diameter of the wide section is larger than the upper limit of the diameter of the hole to be inspected. This application can use the positioning pin on the base to locate the spindle hole of the workpiece, and after positioning, use the inspection pins to cooperate with the inspection holes to quickly realize hole position inspection. Moreover, the multi-diameter segmented structure of the inspection pins in this application can realize the detection of the upper and lower limits of the hole diameter tolerance while performing hole position inspection, thereby realizing full parameter inspection of hole position and hole diameter, improving the inspection accuracy and efficiency of shaft-end workpieces, shortening the warehousing time, and improving production efficiency. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 An exploded view of the hole position gauge for the shaft end workpiece according to an embodiment of this application is shown;

[0020] Figure 2 This paper shows a schematic diagram of the detection pin structure of the hole position gauge for the shaft end workpiece according to an embodiment of the present application;

[0021] Figure 3 This invention provides a schematic diagram of the isometric structure of the hole position gauge for the shaft end workpiece according to an embodiment of the present application.

[0022] Figure 4 A top view of the inspection state of the hole position gauge for the shaft end workpiece according to an embodiment of this application is shown.

[0023] Figure 5 A schematic diagram of the isometric structure of a hole position gauge for a shaft end workpiece according to another embodiment of this application is shown.

[0024] The above figures include the following reference numerals:

[0025] 1. Base assembly; 11. Base; 12. Positioning pin; 13. Inspection hole; 14. Recessed platform; 15. Moving column; 16. Fastening bolt; 2. Inspection pin assembly; 21. Inspection pin; 22. Pin body; 221. Recessed platform; 23. Adjusting ring; 3. Workpiece to be inspected; 31. Spindle hole; 32. Hole to be inspected; 4. End face inspection assembly; 41. Bracket; 42. Flatness inspection mechanism. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] Figures 1 to 4 An embodiment of the hole position gauge for the shaft end workpiece of this application is shown.

[0032] like Figures 1 to 4As shown, this application discloses a hole position inspection fixture for a shaft end workpiece. The fixture includes: a base assembly 1, comprising a base 11, on which a positioning post 12 and a detection hole 13 are provided. The positioning post 12 is inserted into the spindle hole 31 of the workpiece 3 to be inspected, and the detection hole 13 is correspondingly provided with the hole 32 to be inspected on the workpiece 3. A detection pin assembly 2 includes a plurality of detection pins 21, which are inserted into the detection holes 13. The detection pins 21 have a multi-diameter segmented structure, including: a narrow segment located at the bottom (i.e.,...) Figure 1 (as shown in segment B) and the upper wide segment (i.e. Figure 1 (As shown in section A). The diameter of the narrow section is less than the lower limit of the diameter of the hole to be inspected, position 32, and the diameter of the wide section is greater than the upper limit of the diameter of the hole to be inspected, position 13.

[0033] Through the above structural design, the hole position inspection fixture for the shaft end workpiece of this application can utilize the positioning pin 12 on the base 11 to position the main shaft hole 31 of the workpiece, and after positioning, use the inspection pin 21 to cooperate with the inspection hole 13 to quickly realize hole position inspection. Moreover, the inspection pin 21 of this application has a multi-diameter segmented structure, which can realize the detection of the upper and lower limits of the hole diameter tolerance while performing hole position inspection, thereby realizing the full parameter inspection of hole position and hole diameter, improving the inspection accuracy and efficiency of the shaft end workpiece, shortening the warehousing time, and improving production efficiency.

[0034] The narrow section of the detection pin 21 has a diameter slightly smaller than the difference between the standard value and the tolerance limit of the hole position 32 to be inspected. This is used to insert into the hole position 32 and the detection hole 13 to check whether the lower limit of the hole diameter of the hole position 32 meets the standard, and to check whether the opening position of the hole position 32 meets the standard. The wide section of the detection pin 21 has a diameter slightly larger than the sum of the standard value and the tolerance limit of the hole position 32 to check whether the upper limit of the hole diameter of the hole position 32 meets the standard. During inspection, if the narrow section of the detection pin 21 is inserted smoothly while the wide section cannot be inserted, it indicates that the hole diameter of the hole position 32 meets the standard and satisfies the upper and lower limit requirements.

[0035] In some embodiments of this application, such as Figure 1 and Figure 2 As shown, the detection pin 21 in this embodiment includes a pin body 22 and an adjusting ring 23. The lower part of the pin body 22 is exposed to form a narrow section for the lower limit of the detection aperture. The adjusting ring 23 is fitted onto the upper part of the pin body 22 to form a wide section for the upper limit of the detection aperture. The adjusting ring 23 is slightly thicker in the illustration for ease of structural demonstration; in reality, due to the very small tolerance limit, the thickness of the adjusting ring 23 is also smaller. It can be inferred that the thickness of the adjusting ring 23 is slightly greater than twice the tolerance limit to achieve aperture size detection. It is also understood that in this embodiment, the positioning post 12, the detection pin 21, and the adjusting ring 23 are all made of high-hardness materials, thus the frictional loss during the detection process is negligible, ensuring their service life and detection accuracy.

[0036] In some embodiments of this application, reference continues to be made to Figure 2 As shown, a recessed platform 221 is provided on the upper end face of the pin 22, and a gap is formed between the pin 22 and the side wall of the adjusting ring 23 through the recessed platform 221 (i.e., Figure 2 As shown in D). This gap allows for easy gripping of the adjusting ring 23, facilitating its assembly with the pin 22. The adjusting ring 23 can be assembled and fixed to the pin 22 using methods such as applying adhesive or heating to expand and contract.

[0037] In some embodiments of this application, the pin 22 is provided with multiple sets of different diameters to match the inspection holes 32 of different workpieces 3 to be inspected. Similarly, the adjusting ring 23 is also provided with multiple sets of different diameters and thicknesses to achieve combination with various pins 22 to form wide sections of different diameters for inspection.

[0038] In some embodiments of this application, such as Figure 1 and Figure 2 As shown, the lower section of the pin body 22 is provided with a pin section (i.e., Figure 1 (Segment C shown). The pin segment matches the internal dimensions of the detection hole 13, which improves the ease and stability of inserting the pin 22. Meanwhile, as shown... Figure 1 and Figure 2 As shown, the lower end of the pin section has a rounded head structure, which can reduce scratches during the insertion process and protect the inspection tool and the workpiece to be inspected.

[0039] In some embodiments of this application, such as Figures 1 to 4 As shown, the base 11 is also provided with a recessed platform 14. There are two sets of recessed platforms 14, which are located on both sides of the positioning post 12 and extend to the bottom of the workpiece 3 to be inspected. The purpose of providing the recessed platform 14 is to allow the hand to be appropriately inserted into the bottom surface of the workpiece 3 to facilitate picking it up when the workpiece 3 to be inspected needs to be removed after the inspection is completed.

[0040] In some embodiments of this application, the surface of the base 11 that contacts the workpiece 3 under inspection, as well as the outer surface of the positioning post 12, are treated with a smooth surface to ensure that the surface is smooth and will not be scratched. In one example of this application, the difference between the outer diameter of the positioning post 12 and the diameter of the spindle hole 31 of the workpiece 3 under inspection is 0.2-0.3 μm, and the difference between the diameter of the detection hole 13 and the diameter of the hole 32 to be inspected on the workpiece 3 under inspection is 0.3-0.5 μm, to ensure sufficiently high hole position detection accuracy.

[0041] In some embodiments of this application, such as Figures 1 to 4As shown, the base 11 is also provided with movable columns 15. Multiple movable columns 15 are provided, circumferentially distributed on the outer side of the upper surface of the base 11, to facilitate the dragging and moving of the hole gauge of this embodiment on the inspection table, thus simplifying the inspection operation. In this embodiment, the base 11 has a rectangular structure, and four movable columns 15 are correspondingly provided, located at the four vertices of the base 11.

[0042] In some embodiments of this application, the hole position gauge for the shaft end workpiece further includes a traveling assembly, which works in conjunction with the base 11 to facilitate the overall movement of the hole position gauge according to the embodiments of this application. For example, the traveling assembly can be a flatbed trolley with casters. (See reference...) Figures 1 to 4 As shown, the base 11 of this embodiment is provided with a threaded hole. The base 11 is fixedly connected to the walking assembly through the fastening bolt 16 passing through the threaded hole, so that the walking assembly can be used to facilitate dragging and moving operations.

[0043] Figure 5 Another embodiment of the hole position gauge for the shaft end workpiece of this application is shown. For example... Figure 5 As shown, compared to Figures 1 to 4 The embodiment shown, Figure 5 In the illustrated embodiment, the hole position inspection fixture for the shaft end workpiece further includes an end face inspection component 4. The end face inspection component 4 includes a bracket 41 and a flatness inspection mechanism 42. The flatness inspection mechanism 42 is mounted above the base 11 via the bracket 41, allowing for vertical and horizontal sliding. This enables supplementary end face flatness inspection to be performed before and after hole position and diameter inspection, in order to determine whether the end cap type workpiece is flat and meets the standards, and can be fitted and installed with bearings or other end face structures.

[0044] refer to Figure 5 In the illustrated embodiment, the support 41 of the end face inspection component 4 may include a vertical rod and a horizontal rod. The horizontal rod is slidably mounted on the vertical rod via a sleeve-sliding mechanism, allowing it to slide vertically and drive the flatness inspection mechanism 42 to rise and fall, adapting to different workpiece thicknesses. The flatness inspection mechanism 42 is slidably mounted on the horizontal rod via a sleeve-sliding mechanism, sliding horizontally to inspect the flatness of the end face of the shaft-end workpiece. Due to the sleeve-sliding mechanism, the horizontal rod can also rotate around the vertical rod, allowing the flatness inspection mechanism 42 to move along different linear directions, comprehensively inspecting the end face flatness. The flatness inspection mechanism 42 can be a dial indicator or a micrometer indicator, and the change in reading during sliding determines whether the end face flatness meets the standard.

[0045] In summary, the hole position inspection fixture for the shaft end workpiece in this application embodiment includes: a base assembly and a detection pin assembly. The base assembly includes a base, on which a positioning post and a detection hole are provided. The positioning post is inserted and fitted with the spindle hole position of the workpiece to be inspected, and the detection hole is correspondingly set with the hole position to be inspected on the workpiece. The detection pin assembly includes several detection pins, which are inserted and fitted with the detection holes. The detection pins have a multi-diameter segmented structure, including: a narrow segment at the bottom and a wide segment at the top. The diameter of the narrow segment is smaller than the lower limit of the diameter of the hole position to be inspected, and the diameter of the wide segment is larger than the upper limit of the diameter of the hole position to be inspected. This application can use the positioning post on the base to realize the positioning of the spindle hole position of the workpiece, and after positioning, use the detection pins to cooperate with the detection holes to quickly realize hole position inspection. Moreover, the detection pins of this application have a multi-diameter segmented structure, which can realize the detection of the upper and lower limits of the hole diameter tolerance while performing hole position inspection, thereby realizing the full parameter inspection of hole position and hole diameter, improving the inspection accuracy and efficiency of the shaft end workpiece, shortening the warehousing time, and improving production efficiency.

[0046] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hole position inspection tool for a shaft end workpiece, characterized in that, include: The base assembly (1) includes a base (11), on which a positioning post (12) and a detection hole (13) are provided. The positioning post (12) is inserted into the spindle hole (31) of the workpiece to be inspected (3), and the detection hole (13) is correspondingly provided to the hole position (32) of the workpiece to be inspected (3). The detection pin assembly (2) includes a plurality of detection pins (21), which are inserted into the detection hole (13); the detection pin (21) has a multi-diameter segmented structure, including a narrow segment at the bottom and a wide segment at the top; the diameter of the narrow segment is smaller than the lower limit of the diameter of the hole to be inspected (32), and the diameter of the wide segment is larger than the upper limit of the diameter of the detection hole (13).

2. The hole position inspection tool for a shaft end workpiece according to claim 1, characterized in that, The detection pin (21) includes: a pin body (22) and an adjusting ring (23); the lower part of the pin body (22) is exposed to form the narrow section; the upper part of the pin body (22) is fitted with the adjusting ring (23) to form the wide section.

3. The hole position inspection tool for shaft end workpieces according to claim 2, characterized in that, The upper end face of the pin (22) is provided with a countersunk platform (221), and the pin (22) forms a gap with the side wall of the adjusting ring (23) through the countersunk platform (221).

4. The hole position inspection tool for a shaft end workpiece according to claim 2, characterized in that, The pin (22) is provided with multiple sets of different diameters; the adjusting ring (23) is provided with multiple sets of different diameters and different thicknesses.

5. The hole position inspection fixture for shaft end workpieces according to claim 2, characterized in that, The lower section of the pin (22) is provided with a pin section, the pin section is matched with the size of the detection hole (13), and the lower end of the pin section is a round head structure.

6. The hole position inspection fixture for a shaft end workpiece according to claim 1, characterized in that, The base (11) is also provided with a recess (14), and there are two sets of the recess (14). The two sets of the recess (14) are located on both sides of the positioning column (12) and extend to the bottom of the workpiece (3) to be inspected.

7. The hole position inspection fixture for a shaft end workpiece according to claim 1, characterized in that, The base (11) is also provided with a movable column (15), and there are multiple movable columns (15) distributed circumferentially on the outer side of the upper surface of the base (11).

8. The hole position inspection fixture for a shaft end workpiece according to claim 1, characterized in that, The surface of the base (11) that contacts the workpiece (3) to be inspected, as well as the outer surface of the positioning post (12), are all treated with a smooth surface structure.

9. The hole position inspection fixture for a shaft end workpiece according to claim 1, characterized in that, The hole position gauge for the shaft end workpiece also includes: a walking assembly; the base (11) is provided with a threaded hole, and the base (11) is fixedly connected to the walking assembly through a fastening bolt (16) passing through the threaded hole.

10. The hole position inspection fixture for a shaft end workpiece according to claim 1, characterized in that, The hole position gauge of the shaft end workpiece also includes: end face inspection component (4); the end face inspection component (4) includes: bracket (41) and flatness inspection mechanism (42), the flatness inspection mechanism (42) is mounted above the base (11) via the bracket (41) in a way that can be raised, lowered and slid horizontally.

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