Portable stepped hole reference gauge

Abstract

The utility model discloses a portable stepped hole reference gauge, which is used for detecting a workpiece with a stepped hole, the stepped hole comprises a first inner hole and a through hole, the portable stepped hole reference gauge comprises an auxiliary member and a taper rod, the auxiliary member is embedded in the first inner hole of the workpiece, and the auxiliary member is provided with a second inner hole; the diameter of the first end of the taper bar is smaller than that of the second end, and the first end of the taper bar is embedded in the second inner hole of the auxiliary part and extends out of the through hole of the workpiece. The auxiliary part is embedded in the workpiece, the fit clearance between the taper rod and the first inner hole of the workpiece can be eliminated, the tolerance change of the first inner hole can be matched, the accuracy of detection with the stepped hole as the reference is improved, jumping data detection is carried out on the outer wall of the workpiece through the jumping machine, whether the workpiece is a qualified product or not can be further judged, and the detection efficiency is improved. The detection efficiency can be further improved through simple and convenient operation.

Description

Technical Field

[0001] The utility model relates to the technical field of detection tools, in particular to a portable step hole reference detection tool. Background Art

[0002] In current mechanical design, there are many gears based on inner holes. For general through-hole gears, taper rods or general auxiliary gauges can be used to meet the inspection requirements. However, at this stage, some gears based on step holes cannot be inspected with general auxiliary gauges, or the special gauges are complicated and not convenient to operate, resulting in a long operation time, thereby increasing labor costs. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a convenient step hole reference gauge, which can quickly clamp and position the gear workpiece based on the step hole, with extremely high positioning accuracy, and can greatly shorten the gauge operation time and thus reduce labor costs.

[0004] The utility model provides a convenient step hole reference check fixture.

[0005] Used for detecting a workpiece (100) having a stepped hole, the stepped hole comprising a first inner hole (110) and a through hole (120), comprising:

[0006] an auxiliary component (200), the auxiliary component (200) having a second inner hole (210) elastically opened, and the auxiliary component (200) being used to be embedded in the first inner hole (110);

[0007] A tapered rod (300), wherein the diameter of the first end of the tapered rod (300) is smaller than the diameter of the second end, the first end of the tapered rod (300) passes through the second inner hole (210) and extends out of the through hole (120) of the workpiece (100), wherein the middle portion of the tapered rod (300) presses against the inner wall of the second inner hole (210).

[0008] According to some embodiments of the present invention, the outer diameter of the auxiliary component is equal to the aperture of the first inner hole, and the inner diameter of the auxiliary component is equal to the aperture of the through hole.

[0009] According to some embodiments of the utility model, the end surface of the first end of the auxiliary component (200) is provided with a first groove (220) along the direction of the second end, and the end surface of the second end of the auxiliary component (200) is provided with a second groove (230) along the direction of the first end, and at least one of the first groove (220) and the second groove (230) is provided and is spaced apart.

[0010] According to some embodiments of the utility model, the outer diameter of the sleeve is loosely matched with the first inner hole (110) of the workpiece (100), the diameter of the second inner hole (210) of the auxiliary component (200) is larger than the diameter of the first end of the tapered rod (300) and smaller than the diameter of the second end of the tapered rod (300), and the outer diameter of the tapered rod is smaller than the diameter of the through hole (120) as a whole.

[0011] According to some embodiments of the present invention, the difference between the second end and the first end of the tapered rod (300) is greater than the difference between the upper and lower limits of the tolerance of the step hole.

[0012] According to some embodiments of the present invention, a circular hole is disposed at the root of each of the first slot and the second slot.

[0013] According to some embodiments of the present invention, the lengths of the first slot and the second slot are greater than the depth of the first inner hole.

[0014] According to some embodiments of the utility model, one end of the auxiliary component extending into the workpiece is provided with a chamfer.

[0015] According to some embodiments of the present invention, a limiting ring is provided at one end of the auxiliary member away from the chamfer.

[0016] According to some embodiments of the present invention, the workpiece, the auxiliary component and the tapered rod are all located on the same axis.

[0017] The embodiments of the present invention have at least the following beneficial effects:

[0018] The convenient step hole reference gauge provided by the utility model can eliminate the matching clearance between the taper rod and the first inner hole of the workpiece by embedding the auxiliary part in the workpiece, and can cooperate with the tolerance change of the first inner hole, thereby increasing the accuracy of detection based on the step hole as the reference, and its clamping operation is convenient, thereby greatly improving the detection efficiency. At the same time, by embedding the taper rod in the workpiece with the auxiliary part, the outer wall of the workpiece is tested for the runout data by the runout machine, which is conducive to further judging whether the workpiece is a qualified product, and is conducive to further improving the detection efficiency through simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 A schematic diagram of the structure of a portable step hole reference gauge provided by the utility model;

[0021] Figure 2 A schematic diagram of the structure of the workpiece provided by the utility model;

[0022] Figure 3 A schematic diagram of the structure of the tapered rod provided by the utility model;

[0023] Figure 4 A schematic diagram of the structure of the auxiliary parts provided by the utility model;

[0024] Figure 5 for Figure 4 Right view of;

[0025] Figure 6 for Figure 4 Left view of .

[0026] The markings in the figure are as follows:

[0027] Workpiece 100 , first inner hole 110 , through hole 120 ; auxiliary component 200 , second inner hole 210 , first slot 220 , second slot 230 , round hole 240 , chamfer 250 , limiting ring 260 ; tapered rod 300 . DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present utility model, "several" means one or more, "multiple" means more than two, greater than, less than, and exceeding are understood as not including the number itself, and "above", "below", and "within" are understood as including the number itself. If there is a description of "first", "second", etc., it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, words such as “setting”, “installation”, and “connection” should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above words in the present invention based on the specific content of the technical solution.

[0032] Specifically, please refer to Figure 1-4 The portable step hole reference gauge specifically includes:

[0033] Used to detect a workpiece 100 with a step hole, an auxiliary part 200 and a tapered rod 300, wherein the step hole includes a first inner hole 110 and a through hole 120, the auxiliary part 200 has a second inner hole 210 elastically opened, the auxiliary part 200 is used to be embedded in the first inner hole 110, the diameter of the first end of the tapered rod 300 is smaller than the diameter of the second end, the first end of the tapered rod 300 passes through the second inner hole 210 and extends out from the through hole 120 of the workpiece 100, wherein the middle part of the tapered rod 300 presses against the inner wall of the second inner hole 210.

[0034] By embedding the auxiliary part in the workpiece, the matching clearance between the taper rod and the first inner hole of the workpiece can be eliminated, and the tolerance change of the first inner hole can be matched, thereby increasing the accuracy of detection based on the step hole. The clamping operation is convenient, thereby greatly improving the detection efficiency. At the same time, by embedding the taper rod in the workpiece with the auxiliary part, the beating data of the outer wall of the workpiece is detected by the beating machine, which is beneficial to further determine whether the workpiece is a qualified product, and is beneficial to further improve the detection efficiency through simple operation.

[0035] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings. Example 1

[0038] Please refer to Figure 1-4 A convenient step hole reference gauge includes a workpiece 100 for detecting a step hole, an auxiliary part 200 and a tapered rod 300, wherein the step hole includes a first inner hole 110 and a through hole 120, the auxiliary part 200 is elastically provided with a second inner hole 210, the auxiliary part 200 is used to be embedded in the first inner hole 110, the diameter of the first end of the tapered rod 300 is smaller than the diameter of the second end, the first end of the tapered rod 300 passes through the second inner hole 210 and extends out from the through hole 120 of the workpiece 100, wherein the middle part of the tapered rod 300 presses against the inner wall of the second inner hole 210.

[0039] Through the above structural design, the workpiece 100 is a gear with a stepped hole, and can also be other workpieces with a stepped hole. The auxiliary component 200 is a sleeve with a rebound and contraction function. The outer diameter of the auxiliary component 200 is in a clearance fit with the first inner hole 110 of the workpiece 100. The surface diameter of the second inner hole 210 of the auxiliary component 200 is larger than the diameter of the first end of the tapered rod 300, and smaller than the diameter of the second end of the tapered rod 300. The outer diameter of the tapered rod 300 is smaller than the surface diameter of the through hole 120 of the workpiece 100 as a whole. The taper of the tapered rod 300 should not be too large, and the difference between the large end of the second end and the small end of the first end should be slightly larger than the diameter of the first inner hole 110 of the workpiece 100. 0 The difference between the upper and lower limits of the tolerance; by embedding the auxiliary part 200 in the workpiece 100, the matching clearance between the taper rod 300 and the first inner hole 110 of the workpiece 100 can be eliminated, and the tolerance change of the first inner hole 110 can be matched, thereby increasing the accuracy of detection based on the step hole, and its clamping operation is convenient, thereby greatly improving the detection efficiency. At the same time, by embedding the taper rod 300 in the workpiece 100 with the auxiliary part 200, the outer wall of the workpiece 100 is tested for the jumping data by the jumping machine, which is beneficial to further determine whether the workpiece 100 is a qualified product, and is beneficial to further improve the detection efficiency through simple operation.

[0040] Specifically, the outer diameter of the auxiliary member 200 is equal to the aperture of the first inner hole 110 , and the inner diameter of the auxiliary member 200 is equal to the aperture of the through hole 120 .

[0041] Through the above-mentioned structural design, the outer diameter of the auxiliary part 200 is in a clearance fit with the first inner hole 110 of the workpiece 100, the surface diameter of the second inner hole 210 of the auxiliary part 200 is larger than the diameter of the first end of the tapered rod 300, and smaller than the diameter of the second end of the tapered rod 300, and the outer diameter of the tapered rod 300 is smaller than the surface diameter of the through hole 120 of the workpiece 100 as a whole.

[0042] Specifically, the end surface of the first end of the auxiliary part 200 is provided with a first groove 220 along the direction of the second end, and the end surface of the second end of the auxiliary part 200 is provided with a second groove 230 along the direction of the first end. The end surface of the first end of the auxiliary part 200 is provided with a first groove 220 along the direction of the second end, and the end surface of the second end of the auxiliary part 200 is provided with a second groove 230 along the direction of the first end. At least one of the first groove 220 and the second groove 230 is provided, and they are arranged at intervals.

[0043] Through the above structural design, the first slot 220 is arranged just above and just below the end surface of the first end of the auxiliary member 200 . The first slot 220 is arranged just above and just below the end surface of the first end of the auxiliary member 200 .

[0044] Please refer to Figure 5Specifically, the outer diameter of the sleeve is loosely matched with the first inner hole 110 of the workpiece 100, the diameter of the second inner hole 210 of the auxiliary part 200 should be larger than the diameter of the first end of the tapered rod 300 and smaller than the diameter of the second end of the tapered rod 300, and the outer diameter of the tapered rod 300 should be smaller than the diameter of the through hole 120 as a whole.

[0045] Through the above structural design, the auxiliary part 200 is embedded in the first inner hole 110 of the workpiece 100 through the chamfer 250, and the first small end of the tapered rod 300 enters the second inner hole 210 of the auxiliary part 200. If the first small end of the workpiece 100 of the tapered rod 300 passes through the through hole 120 and the middle section clamps and supports the auxiliary part 200, it means that the workpiece 100 is a qualified product. If the second large end of the tapered rod 300 passes through the through hole 120 smoothly, it means that the workpiece 100 is an unqualified product. At the same time, by embedding the tapered rod 300 in the workpiece 100 with the auxiliary part 200, and detecting the jumping data of the outer wall of the workpiece 100 by the jumping machine, it is beneficial to further judge whether the workpiece 100 is a qualified product, and it is beneficial to further improve the detection efficiency through simple operation.

[0046] Please refer to Figure 6 Specifically, the difference between the second end and the first end of the tapered rod 300 is greater than the difference between the upper and lower limits of the step hole tolerance.

[0047] Through the above-mentioned structural design, the barrel of the auxiliary part 200 is evenly distributed with the first groove 220 and the second groove 230, and the adjacent first groove 220 and the second groove 230 are in opposite directions. The first groove 220 is broken from the chamfer 250 of the auxiliary part 200 toward the limit ring 260, and the second groove 230 is broken from the limit ring 260 toward the chamfer 250. When the tapered rod 300 is received to squeeze the second inner hole 210 of the auxiliary part 200, elastic deformation and expansion may occur, thereby tightening the workpiece 100, and whether the workpiece 100 is qualified can be visually observed. After the test is completed, the tapered rod 300 is pulled out, and the auxiliary part 200 rebounds to release the workpiece. Example 2

[0048] The portable step hole reference gauge provided in Example 1 is further optimized. Specifically, Figure 4 As shown, a circular hole 240 is disposed at the root of the first slot 220 and the second slot 230 .

[0049] Through the above structural design, the roots of the first slot 220 and the second slot 230 are both provided with a circular hole 240 . The function of the circular hole 240 is to prevent stress concentration from causing fracture when the auxiliary component 200 is stretched open. Example 3

[0050] The portable step hole reference gauge provided in Example 1 or 2 is further optimized, such as Figure 1As shown, the lengths of the first slot 220 and the second slot 230 are greater than the depth of the first inner hole 110 .

[0051] Through the above structural design, the length of the first slot 220 and the second slot 230 should be greater than the depth of the first inner hole 110 of the workpiece 100, so that the auxiliary part 200 can fully contact with the first inner hole 110 when squeezed and stretched by the tapered rod 300.

[0052] Specifically, one end of the auxiliary member 200 extending into the workpiece 100 is provided with a chamfer 250 .

[0053] Through the above structural design, the chamfer 250 provided on the auxiliary member 200 is used to facilitate the auxiliary member 200 to extend into or out of the first inner hole 110 of the workpiece 100, which is conducive to a smooth testing process.

[0054] Specifically, a limiting ring 260 is disposed at one end of the auxiliary member 200 away from the chamfer 250 .

[0055] Through the above structural design, the limiting ring 260 is used to facilitate the auxiliary component 200 to be pulled out of the first inner hole 110 of the workpiece 100 and prevent the limiting ring 260 from being overly embedded in the auxiliary component 200.

[0056] Specifically, the workpiece 100 , the auxiliary component 200 and the tapered rod 300 are all located on the same axis.

[0057] The use process of the portable step hole reference gauge provided by the utility model is as follows:

[0058] The auxiliary part 200 is embedded in the first inner hole 110 of the workpiece 100 through the chamfer 250, and the first small end of the tapered rod 300 enters the second inner hole 210 of the auxiliary part 200. If the first small end of the workpiece 100 of the tapered rod 300 passes through the through hole 120 and the middle section clamps and supports the auxiliary part 200, it means that the workpiece 100 is a qualified product. If the second large end of the tapered rod 300 passes through the through hole 120 smoothly, it means that the workpiece 100 is an unqualified product. At the same time, by embedding the tapered rod 300 in the workpiece 100 with the auxiliary part 200, and detecting the jumping data of the outer wall of the workpiece 100 by the jumping machine, it is beneficial to further judge whether the workpiece 100 is a qualified product, and it is beneficial to further improve the detection efficiency through simple operation.

[0059] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A portable step hole reference gauge for detecting a workpiece (100) having a step hole, wherein the step hole comprises a first inner hole (110) and a through hole (120), characterized in that: include: an auxiliary component (200), the auxiliary component (200) having a second inner hole (210) elastically opened, and the auxiliary component (200) being used to be embedded in the first inner hole (110); A tapered rod (300), wherein the diameter of the first end of the tapered rod (300) is smaller than the diameter of the second end, the first end of the tapered rod (300) passes through the second inner hole (210) and extends out of the through hole (120) of the workpiece (100), wherein the middle portion of the tapered rod (300) presses against the inner wall of the second inner hole (210).

2. The portable step hole reference gauge according to claim 1 is characterized in that: The outer diameter of the auxiliary component (200) is equal to the aperture of the first inner hole (110), and the inner diameter of the auxiliary component (200) is equal to the aperture of the through hole (120).

3. The portable step hole reference gauge according to claim 2 is characterized in that: The end surface of the first end of the auxiliary component (200) is provided with a first slot (220) along the direction of the second end, and the end surface of the second end of the auxiliary component (200) is provided with a second slot (230) along the direction of the first end, and at least one of the first slot (220) and the second slot (230) is provided and is spaced apart.

4. The portable step hole reference gauge according to claim 3 is characterized in that: The outer diameter of the auxiliary component (200) is clearance-matched with the first inner hole (110) of the workpiece (100); the diameter of the second inner hole (210) of the auxiliary component (200) is larger than the diameter of the first end of the tapered rod (300) and smaller than the diameter of the second end of the tapered rod (300); and the outer diameter of the tapered rod (300) is smaller than the diameter of the through hole (120) as a whole.

5. The portable step hole reference gauge according to claim 4 is characterized in that: The difference between the second end and the first end of the tapered rod (300) is greater than the difference between the upper and lower limits of the tolerance of the step hole.

6. The portable step hole reference gauge according to any one of claims 3 to 5, characterized in that: Circular holes (240) are provided at the roots of the first slot (220) and the second slot (230).

7. The portable step hole reference gauge according to claim 6 is characterized in that: The lengths of the first slot (220) and the second slot (230) are greater than the depth of the first inner hole (110).

8. The portable step hole reference gauge according to claim 1 is characterized in that: One end of the auxiliary component (200) extending into the workpiece (100) is provided with a chamfer (250).

9. The portable step hole reference gauge according to claim 8, characterized in that: A limiting ring (260) is provided at one end of the auxiliary component (200) away from the chamfer (250).

10. The portable step hole reference gauge according to claim 1, characterized in that: The workpiece (100), the auxiliary component (200) and the tapered rod (300) are all located on the same axis.

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