A detection outer diameter sleeve gauge

Abstract

The utility model provides a kind of detects outer diameter sleeve gauge, it is related to outer diameter sleeve gauge technical field, the utility model, including smooth ring gauge, the arc surface of smooth ring gauge is fixedly connected with track bar, and the quantity track bar is equidistantly provided with multiple around smooth ring gauge, spring is set on the outer surface of this track bar, smooth ring gauge is laid on ground, then the measured shaft is vertically inserted into the inner circle of smooth ring gauge, if there is gap between the measured shaft and the inner circle of smooth ring gauge, under the synergic help of track bar, spring, moving plate and abutting column, drive smooth ring gauge to move to make it quickly and more accurate adjustment to be concentric with the measured shaft, simple and fast, then under the help of scale line, the specific length of gap between smooth ring gauge and the measured shaft is known, so other measuring tools are not needed to be taken to measure, it is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of outer diameter gauge technology, and in particular to an outer diameter gauge for testing. Background Technology

[0002] An outside diameter gauge is a simple and reliable special-purpose measuring tool. Its core function is to quickly inspect the outside diameter of cylindrical workpieces (such as shafts, bars, bolts, etc.) using a "comparative measurement method." A common type is the smooth ring gauge, which compares its inner diameter with the outside diameter of the shaft being measured. By placing the smooth ring gauge on the shaft and observing the gap between the gauge and the shaft, one can determine whether the outside diameter of the shaft is within the specified tolerance range.

[0003] However, in the existing technology, when measuring the outer diameter of shaft-type workpieces with existing smooth ring gauges, it is necessary to ensure that the center (axis) of the ring gauge and the shaft being measured is coincident as much as possible. When the end face size of the shaft being measured is smaller than the inner ring size of the smooth ring gauge, it is generally necessary to manually adjust the two to coincide. However, relying solely on manual adjustment has low accuracy, and it is also necessary to use other measuring tools to measure the gap size to determine whether the outer diameter of the shaft being measured is within the specified tolerance range, which is quite inconvenient. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies: when the end face size of the shaft being measured is smaller than the inner ring size of the smooth ring gauge, it is generally necessary to manually adjust the two to make their centers coincide. However, manual adjustment alone has low accuracy, and other measuring tools are needed to measure the gap size to determine whether the outer diameter of the shaft being measured is within the specified tolerance range, which is inconvenient.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a gauge for detecting outer diameter, comprising a smooth ring gauge, wherein a track rod is fixedly connected to the arc-shaped surface of the smooth ring gauge, and multiple track rods are equidistantly arranged around the smooth ring gauge; a spring is fitted on the outer surface of the track rod; a movable plate is connected through the track rod at a point below one end of the spring; a positioning pin is connected through one side of the movable plate, and the positioning pin is engaged with the track rod; a stop post is fixedly connected to the lower surface of the movable plate, and the stop post is slidably connected through the smooth ring gauge; and scale lines are provided on the surface of the stop post.

[0006] In a preferred embodiment, the size of the insertion end of the positioning pin is adapted to the size of the insertion hole on the moving plate and the track rod.

[0007] In a preferred embodiment, a pull rod is fixedly connected to one end surface of the positioning pin.

[0008] In a preferred embodiment, a slider is fixedly connected to the through hole surface of the track rod on the movable plate, and a slide rail is provided on the surface of the track rod, with the slider sliding in contact with the track rail.

[0009] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0010] This invention involves placing a smooth ring gauge flat on the ground, then vertically inserting the shaft to be measured into the inner ring of the smooth ring gauge. If there is a gap between the shaft to be measured and the inner ring of the smooth ring gauge, the positioning pin is then removed from the moving plate, releasing the positioning of the moving plate on the track rod. The spring then pushes the moving plate back, thereby moving the abutment post until it abuts against the shaft to be measured. The spring then pushes the track rod back, thereby moving the smooth ring gauge to quickly and accurately adjust it to be concentric with the shaft to be measured. This method is simple and quick, allowing for subsequent measurement of the length of the gap between the two.

[0011] When the smooth ring gauge and the shaft being measured are concentric, and it is necessary to determine the specific length of the gap between them, since the zero mark of the scale is located at the intersection of the smooth ring gauge and the outer side of the abutment post when the moving plate is in the positioning state, after the abutment post moves and abuts against the shaft being measured, the specific length of the gap between the smooth ring gauge and the shaft being measured can be determined by observing the value of the scale line located at the intersection of the smooth ring gauge and the outer side of the abutment post. This allows it to be determined whether the outer diameter of the shaft being measured is within the specified tolerance range, which is more convenient as it eliminates the need to use other measuring tools. Attached Figure Description

[0012] Figure 1 A schematic diagram of the overall structure of a measuring outer diameter sleeve provided by this utility model;

[0013] Figure 2 A schematic diagram of the structure around the track rod and the abutment post of a gauge for detecting outer diameter sleeves provided by this utility model;

[0014] Figure 3 This utility model provides a gauge for detecting outer diameter. Figure 2 Enlarged view of point A in the middle.

[0015] Legend:

[0016] 1. Smooth ring gauge; 2. Track rod; 3. Spring; 4. Moving plate; 5. Positioning pin; 6. Pull rod; 7. Abutment post; 8. Scale line; 9. Sliding block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1

[0019] like Figure 1-3As shown, this utility model provides a technical solution: a gauge for detecting outer diameter, including a smooth ring gauge 1. A track rod 2 is fixedly connected to the arc-shaped surface of the smooth ring gauge 1. The track rod 2 regulates the extension and retraction of the spring 3, allowing it to extend and retract in a straight direction, preventing it from bending and being damaged during the extension and retraction process. Multiple track rods 2 are equidistantly arranged around the smooth ring gauge 1. A spring 3 is fitted onto the outer surface of the track rod 2. With the help of the contracted spring 3, a pushing force is applied to the moving plate 4, assisting the moving plate 4 and the abutment post 7 in their pushing movements. The surface of the track rod 2 extends below one end of the spring 3. A movable plate 4 is connected to the track rod 2. A positioning pin 5 is connected through one side of the movable plate 4 and engages with the track rod 2. By connecting the positioning pin 5 to the movable plate 4 and the track rod 2, the movable plate 4 is positioned on the track rod 2. This prevents the movable plate 4 from being pushed by the retracted spring 3 when the shaft to be measured is not vertically inserted into the inner ring of the smooth ring gauge 1, thus preventing the abutment post 7 from moving and one end of it from moving into the inner ring of the smooth ring gauge 1 and obstructing the vertical insertion of the shaft to be measured into the inner ring of the smooth ring gauge 1. The abutment post 7 is fixedly connected to the lower surface of the movable plate 4 and slides through the smooth ring gauge 1. When it is necessary to check whether the outer diameter of the shaft being measured is qualified, place the smooth ring gauge 1 flat on the ground, and then insert the shaft being measured vertically into the inner ring of the smooth ring gauge 1. If there is a gap between the shaft being measured and the inner ring of the smooth ring gauge 1, then remove the positioning pin 5 from the moving plate 4 to release the positioning of the moving plate 4 on the track rod 2. Then the spring 3 pushes the moving plate 4 back, thereby driving the abutment 7 to move and finally abut against the shaft being measured. Then the spring 3 will push the track rod 2 back, thereby driving the smooth ring gauge 1 to move quickly and accurately adjust it to be concentric with the shaft being measured. This is simple and quick, so that the length of the gap between the two can be measured later. The surface of the support post 7 is provided with a scale line 8. When the smooth ring gauge 1 and the shaft being measured are in a concentric state, and it is necessary to know the specific length of the gap between them, since the zero mark of the scale line 8 is located at the intersection of the smooth ring gauge 1 and the support post 7 when the moving plate 4 is in the positioning state, after the support post 7 moves and rests against the shaft being measured, the specific length of the gap between the smooth ring gauge 1 and the shaft being measured can be determined by observing the value of the scale line 8 located at the intersection of the smooth ring gauge 1 and the support post 7. Thus, it can be determined whether the outer diameter of the shaft being measured is within the specified tolerance range. This is more convenient because there is no need to take other measuring tools for measurement.

[0020] Example 2

[0021] like Figure 1-3As shown, the size of the insertion end of the positioning pin 5 is adapted to the size of the insertion hole on the moving plate 4 and the track rod 2. This ensures that the positioning pin 5 can be stably connected to the moving plate 4 and the track rod 2, thereby making the moving plate 4 stably positioned on the track rod 2. A pull rod 6 is fixedly connected to one end of the positioning pin 5. The pull rod 6 is designed to facilitate the movement of the positioning pin 5 when it is hooked and pulled by a finger, so that it is disengaged from the track rod 2 and the moving plate 4. A slider 9 is fixedly connected to the through hole of the track rod 2 on the moving plate 4, and a slide rail is provided on the surface of the track rod 2. The slider 9 slides in the slide rail. The slide rail and the slider 9 limit the sliding distance of the moving plate 4 on the track rod 2, so that the moving plate 4 carries the slider 9 to the outside of the smooth ring gauge 1 and finally the slider 9 moves to one end of the slide rail and stops moving. This allows the insertion hole on the moving plate 4 to align with the insertion hole on the track rod 2, which facilitates the subsequent connection of the positioning pin 5 to the track rod 2 and the moving plate 4.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A gauge for detecting outer diameter, comprising a smooth ring gauge (1), characterized in that: A track rod (2) is fixedly connected to the arc-shaped surface of the smooth ring gauge (1), and multiple track rods (2) are equidistantly arranged around the smooth ring gauge (1). A spring (3) is sleeved on the outer surface of the track rod (2). A moving plate (4) is connected through the track rod (2) below one end of the spring (3). A positioning pin (5) is connected through one side of the moving plate (4), and the positioning pin (5) is engaged with the track rod (2). A stop post (7) is fixedly connected to the lower surface of the moving plate (4), and the stop post (7) is slidably connected through the smooth ring gauge (1). A scale line (8) is provided on the surface of the stop post (7).

2. The outer diameter gauge according to claim 1, characterized in that: The size of the insertion end of the positioning pin (5) is adapted to the size of the insertion hole on the moving plate (4) and the track rod (2).

3. The outer diameter gauge according to claim 1, characterized in that: A pull rod (6) is fixedly connected to one end of the positioning pin (5).

4. The outer diameter gauge according to claim 1, characterized in that: A slider (9) is fixedly connected to the through hole surface of the track rod (2) on the movable plate (4), and a slide rail is provided on the surface of the track rod (2), and the slider (9) slides in the slide rail.

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