Steel pipe inner diameter measuring tool with floating detection base

Abstract

The utility model discloses a steel pipe inner diameter measuring tool with a floating detection base, and aims to solve the problems of insufficient concentricity, poor adaptability and poor measuring stability of a steel pipe inner diameter measuring device in the prior art. The measuring tool comprises a workbench, a measuring part and a supporting seat. The measuring part is arranged on the side portion of the top end of the workbench, accurate measurement of the inner diameter of the steel pipe is achieved through an inverted-L-shaped measuring support, a dial indicator and a three-jaw chuck, and the three-jaw chuck is provided with a clamping jaw head capable of avoiding end opening burrs. The supporting seat assists in supporting the measured steel pipe through the supporting base, the floating joint capable of floating up and down and the V-shaped block, and the lower part of the floating joint is provided with a screw rod for height adjustment to ensure concentricity. In addition, the supporting base is further provided with a dovetail groove guide rail, so that the supporting base can move front and back to adapt to steel pipes with different lengths. The tool is further provided with a foot-operated switch, so that opening and closing of the three-jaw chuck can be controlled conveniently. By means of the design, accuracy, adaptability and stability of measurement are remarkably improved, and the steel pipe inner diameter measuring device is suitable for measuring the inner diameters of steel pipes of various specifications and has remarkable technical progress and practical value.

Description

Technical Field

[0001] This utility model relates to the field of testing devices, and in particular to a tooling for measuring the inner diameter of steel pipes with a floating testing base. Background Technology

[0002] In the steel pipe manufacturing and processing industry, accurate measurement of the inner diameter of steel pipes is a crucial step in ensuring product quality and the smooth progress of subsequent processing. Traditional steel pipe inner diameter measuring devices typically consist of a fixed measuring base and a movable measuring mechanism. The measuring mechanism moves inside the steel pipe and contacts the inner wall to measure its diameter.

[0003] In existing steel pipe inner diameter measuring devices, the detection seat is often designed as a fixed structure, while the detection mechanism moves inside the steel pipe manually or mechanically to perform the measurement. While this design can meet basic measurement needs to some extent, it has the following main problems: First, insufficient concentricity. Due to limitations in the connection method and positioning accuracy between the detection seat and the detection mechanism, it is difficult to achieve high-precision concentric alignment during the measurement process. Deviations in concentricity directly increase the error in the measurement results, affecting the accuracy and reliability of the measurement data. Second, poor adaptability. Traditional measuring devices typically require different detection heads or adjustments to the device structure for steel pipes of different diameters. This not only increases operational complexity but also limits measurement efficiency and the breadth of the measurement range.

[0004] In summary, existing steel pipe inner diameter measuring devices have significant shortcomings in terms of concentricity, adaptability, and measurement stability, making it difficult to meet the requirements for high-precision and high-efficiency steel pipe inner diameter measurement. Therefore, developing a new type of steel pipe inner diameter measuring fixture that can effectively solve the above problems and improve measurement accuracy and efficiency is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] To address the problems existing in the background technology, this utility model provides a steel pipe inner diameter measuring fixture with a floating detection base, which improves the concentricity between the detection base and the detection mechanism, thereby achieving accurate measurement of the steel pipe inner diameter. The device includes a workbench, a measuring part, and a support base. The measuring part is located on the top side of the workbench and is used to measure the inner diameter of the steel pipe. The support base is located at the other end of the measuring part and is used to assist in supporting the steel pipe being measured.

[0006] Furthermore, the measuring unit includes a measuring bracket, a dial indicator, and a three-jaw chuck. The measuring bracket is an inverted "L" shape, vertically mounted on the top of the worktable. The three-jaw chuck is vertically mounted on the side of the measuring bracket. The dial indicator is mounted on the upper part of the measuring bracket, and its lower measuring part is connected to one of the jaws of the three-jaw chuck. The three-jaw chuck expands from the inside out, and the inner diameter of the steel pipe is measured by reading the displacement distance of the jaws using the dial indicator.

[0007] Furthermore, the support base includes a support base, a floating joint, and a V-shaped block. The floating joint is disposed above the support base and can float up and down to adjust the concentricity between the steel pipe being tested and the three-jaw chuck. The V-shaped block is disposed above the floating joint to support the steel pipe being tested.

[0008] Preferably, a screw is provided at the lower part of the floating joint, and the screw is used to adjust the height of the floating joint up and down.

[0009] Furthermore, the support base also includes a dovetail groove guide rail, which is fixed to the upper end of the workbench. The support base is engaged inside the dovetail groove guide rail and can move back and forth along the dovetail groove guide rail to support steel pipes of different lengths being tested.

[0010] Preferably, the outer diameter of the jaw head end of the three-jaw chuck is larger than the outer diameter of the jaw head extension, which can avoid the port of the workpiece being measured and prevent burrs or flash from affecting the accuracy of the measurement data.

[0011] Preferably, the device further includes a foot switch for controlling the opening and closing of the three-jaw chuck, facilitating measurement.

[0012] The advantages and beneficial effects of this utility model are as follows: By introducing a floating joint design into the support base, the concentricity between the steel pipe being measured and the three-jaw chuck is greatly improved. The floating joint can float up and down, automatically adjusting its position to eliminate concentricity deviations caused by installation errors or the straightness of the steel pipe itself, thereby ensuring the accuracy of the measurement results. The height of the floating joint can be finely adjusted via a screw, allowing the measuring fixture to adapt to the measurement needs of steel pipes of different diameters without the need for frequent replacement of measuring heads or adjustment of the device structure, greatly improving the flexibility and efficiency of measurement. The dovetail guide rail design allows the support base to move back and forth, further expanding the applicability of the measuring fixture and enabling it to support and measure steel pipes of different lengths. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the support base of this utility model.

[0016] Among them, 1-workbench, 2-measuring section, 21-measuring bracket, 22-dial indicator, 23-three-jaw chuck, 3-support base, 31-support base, 32-floating joint, 321-screw, 33-V-block, 34-dovetail groove guide rail, 4-foot switch. 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 skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0018] like Figure 1 , Figure 2 As shown, the mechanical gripper mainly includes a worktable 1, a measuring unit 2, and a support base 3.

[0019] The workbench 1 serves as the foundation of the entire measuring fixture. The workbench 1 is a planar structure used to support and fix the measuring part 2 and the support base 3.

[0020] The measuring unit 2 includes a measuring bracket 21, a dial indicator 22, and a three-jaw chuck 23. The measuring bracket 21, shaped like an inverted "L," is vertically mounted on the side of the top of the worktable 1, serving as the main support structure during the measurement process. The dial indicator 22 is mounted on the upper part of the measuring bracket 21, with its lower measuring section engaging with one jaw of the three-jaw chuck 23 for accurately reading the jaw's displacement distance. The three-jaw chuck 23 is vertically positioned on the side of the measuring bracket 21, and its three jaws expand or contract synchronously to contact and measure the inner wall of the steel pipe. In this embodiment, the outer diameter of the jaw head end of the three-jaw chuck 23 is larger than the outer diameter of the jaw head extension, designed to avoid burrs and flash at the workpiece port, ensuring the accuracy of the measurement data.

[0021] The support base 3 includes a support base 31, a floating joint 32, a V-block 33, and a dovetail guide rail 34. The support base 31 is located at the other end of the measuring section 2 and is connected to the worktable 1 via the dovetail guide rail 34. It can move back and forth along the guide rail to accommodate steel pipes of different lengths. The floating joint 32 is installed above the support base 31 and has a floating function. A screw 321 is located at its lower part; rotating the screw 321 allows for fine adjustment of the height of the floating joint 32, ensuring high concentricity between the steel pipe being measured and the three-jaw chuck 23. The V-block 33 is located above the floating joint 32 and is used to stably support the steel pipe being measured. Its V-shaped design helps accommodate steel pipes of different diameters and limits their lateral movement. The dovetail guide rail 34 is fixed to the upper end of the worktable 1 and cooperates with the support base 31, allowing the support base 3 to move smoothly along the guide rail.

[0022] This embodiment also includes a foot switch 4, which is convenient for operators to step on and is used to control the opening and closing of the three-jaw chuck 23, making the measurement process more convenient and efficient.

[0023] Specific usage steps:

[0024] In this embodiment, firstly, based on the length of the steel pipe being measured, the support base 31 is adjusted to a suitable position using the dovetail guide rail 34 to ensure the steel pipe is stably supported on the V-block 33. Then, the screw 321 at the bottom of the floating joint 32 is rotated to adjust the height of the floating joint 32, ensuring optimal concentricity between the steel pipe being measured and the three-jaw chuck 23. Next, the foot switch 4 is pressed to retract the three-jaw chuck 23, inserting one end of the steel pipe into it. Then, the jaws of the three-jaw chuck 23 are slowly expanded outwards until they contact the inner wall of the steel pipe. At this point, the dial indicator 22 accurately records the displacement distance of the jaws, thus achieving precise measurement of the inner diameter of the steel pipe. After measurement, the foot switch 4 is pressed again to retract the three-jaw chuck 23, removing the steel pipe and completing the entire measurement process. Through the above specific embodiments, this invention effectively solves the problems existing in the steel pipe inner diameter measuring device in the prior art, improving the accuracy and efficiency of the measurement.

[0025] The foregoing has provided a detailed description of a steel pipe inner diameter measuring fixture with a floating detection base provided by this utility model. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A steel pipe inner diameter measuring fixture with a floating detection base, comprising a worktable (1), a measuring part (2), and a support base (3), wherein the measuring part (2) is disposed on the top side of the worktable (1), and the support base (3) is disposed at the other end of the measuring part (2), characterized in that, The measuring unit (2) includes a measuring bracket (21), a dial indicator (22) and a three-jaw chuck (23). The measuring bracket (21) is an inverted "L" shape and is vertically set at the top of the workbench (1). The three-jaw chuck (23) is vertically set on the side of the measuring bracket (21). The dial indicator (22) is set on the upper part of the measuring bracket (21). The lower measuring part of the dial indicator (22) is connected to one of the jaws of the three-jaw chuck (23).

2. The steel pipe inner diameter measuring fixture with a floating detection base according to claim 1, characterized in that, The support base (3) includes a support base (31), a floating joint (32) and a V-block (33). The floating joint (32) is located above the support base (31). The floating joint (32) can float up and down to adjust the concentricity between the steel pipe being tested and the three-jaw chuck (23). The V-block (33) is located above the floating joint (32).

3. The steel pipe inner diameter measuring fixture with a floating detection base according to claim 2, characterized in that, The support base (3) also includes a dovetail groove guide rail (34), which is fixed to the upper end of the workbench (1). The support base (31) is installed inside the dovetail groove guide rail (34) and can move back and forth along the dovetail groove guide rail (34).

4. The steel pipe inner diameter measuring fixture with a floating detection base according to claim 3, characterized in that, The floating joint (32) is provided with a screw (321) at the lower part, and the screw (321) is used to adjust the height of the floating joint (32) up and down.

5. A steel pipe inner diameter measuring fixture with a floating detection base according to any one of claims 1 to 4, characterized in that, The outer diameter of the jaw head end of the three-jaw chuck (23) is larger than the outer diameter of the jaw head extension.

6. A steel pipe inner diameter measuring fixture with a floating detection base according to any one of claims 1 to 4, characterized in that, The tooling also includes a foot switch (4), which is used to control the opening and closing of the three-jaw chuck (23).

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