Measuring device

Abstract

The embodiment of the invention discloses a measuring device, which comprises a measuring platform, a dial indicator, a connecting seat and a measuring head, the measuring platform is used for bearing a to-be-measured workpiece; the dial indicator is fixed above the measuring platform through the measuring head and the connecting seat; and the dial indicator is connected with the measuring head and is used for detecting the workpiece to be detected. And the measurement precision and convenience of the workpiece are improved.

Description

Technical Field

[0001] This invention relates to the field of workpiece measurement, and more particularly to a measuring device. Background Technology

[0002] In machining processes, the dimensional accuracy of key structural components directly affects the assembly quality and operational safety of the product. For example, when CNC machining critical components such as shear caps, some key locations (such as groove depth) often involve minute dimensional control, and tolerances are typically required to be controlled within a small range (e.g., 0.7 mm ± 0.02 mm). Traditional processes often use dedicated calipers or general-purpose measuring tools for dimensional inspection, but due to the minimum scale limitations of calipers and structural matching issues, it is often difficult to achieve high-precision, repeatable measurements of minute groove depths.

[0003] Taking existing measurement methods as an example, the smallest scale of commonly used process calipers is 0.02 mm. During the measurement process, there are problems such as unstable readings and limited measurement angles. Especially when measuring the bottom of a tank, irregular or inclined positions, the measuring head cannot accurately fit the contact surface, resulting in large measurement errors, inconvenient operation, and easy for defective products to flow out, posing serious quality risks.

[0004] There is currently no effective solution to the problem of inaccurate workpiece dimension measurement in existing technologies. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a measuring device that, by employing a replaceable angle measuring head, an adjustable structural connector, and a high-precision dial indicator, enables high-precision and repeatable groove depth measurement of workpieces with different structures and angles, thereby effectively improving the accuracy of product inspection and processing quality.

[0006] To achieve the above objectives, the present invention provides a measuring device, comprising: a measuring platform, a dial indicator, a connecting base, and a measuring head; the measuring platform is used to support the workpiece to be measured; the dial indicator is fixed above the measuring platform via the connecting base and the measuring head; the dial indicator is connected to the measuring head and is used to detect the workpiece to be measured.

[0007] Alternatively, the measuring head is connected to the dial indicator at a predetermined angle.

[0008] Alternatively, the measuring head can be detachably connected to the dial indicator.

[0009] Optionally, the connecting seat includes a base and a mounting bracket; the base is connected to the measuring platform by screws; one end of the mounting bracket is connected to the base, and the dial indicator is mounted on the free end after bending.

[0010] Alternatively, the free end of the card holder is provided with two clips; each clip has a threaded hole near its end for inserting a bolt to fix the dial indicator.

[0011] Optionally, the free end of the card holder is provided with a horizontal groove; the clamp can slide in the horizontal groove.

[0012] Alternatively, the tip of the measuring head may have a spherical arc-shaped structure.

[0013] Optionally, the measuring platform is provided with a limiting block, which is used to limit the workpiece to be measured.

[0014] Optionally, the measuring platform is provided with a first positioning hole; the limiting block is provided with a second positioning hole corresponding to the first positioning hole, and the limiting block is positioned on the measuring platform by a positioning pin.

[0015] Optionally, a gasket is provided between the connecting seat and the measuring platform.

[0016] The above technical solution has the following beneficial effects: by using a dial indicator in conjunction with a replaceable angle measuring head, a measurement accuracy of 0.01mm can be achieved, effectively meeting the high-precision detection requirements of key dimensions and avoiding quality problems caused by measurement errors; the measuring head can be replaced with a tip structure of different angles (such as 90 degrees or other angles) according to actual needs, which is suitable for the detection of workpieces with various shapes and limited positions, and has good versatility and flexibility. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the measuring device provided in an embodiment of the present invention; Figure 2 This is a cross-sectional view of the measuring device provided in an embodiment of the present invention.

[0019] Reference numerals in the attached diagram: 1-Measuring platform; 2-Workpiece to be measured; 3-Measuring head; 4-Connecting seat; 5-Dial indicator; 6-Screw; 7-Clamping plate; 8-Bolt. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] To address the problem of inaccurate workpiece measurement in existing technologies, this invention provides a measuring device comprising: a measuring platform 1, a dial indicator 5, a connecting seat 4, and a measuring head 3; the measuring platform 1 is used to support the workpiece 2 to be measured; the dial indicator 5 is fixed above the measuring platform 1 via the measuring head 3 and the connecting seat 4; the dial indicator 5 is connected to the measuring head 3 and is used to inspect the workpiece 2.

[0022] The measuring platform 1 is used to support the workpiece 2 to be measured. Its surface should have good flatness and rigidity to ensure the accuracy and stability of the measurement. The platform can be made of metal, granite or other hard materials, and is equipped with positioning structures (such as positioning holes or limiting blocks) as needed to assist in the placement and limiting of the workpiece 2 to be measured.

[0023] The dial indicator 5 is a high-precision displacement measuring device, preferably with a minimum graduation of 0.01 mm or less, suitable for precise measurement of minute dimensional changes. The dial indicator 5 is mounted on the measuring platform 1 and fixedly positioned by the connecting seat 4.

[0024] The connecting seat 4 is a support structure that connects the measuring platform 1 and the dial indicator 5. One end of it is installed on the measuring platform 1, and the other end is used to clamp or support the dial indicator 5, so that the measuring rod of the dial indicator 5 faces the measuring part of the workpiece 2 to be measured and maintains vertical or specific angle contact.

[0025] The measuring head 3 is connected to the end of the measuring rod of the dial indicator 5 and is used to make contact with the target surface (such as the bottom of a groove, the bottom of a hole, or other feature surfaces) of the workpiece 2 to be measured. The measuring head 3 can be adjusted or replaced according to the geometric characteristics of the object being measured to improve contact accuracy and reduce measurement error.

[0026] During the measurement process, the operator places the workpiece securely at the designated position on the measuring platform 1, and the measuring head 3 contacts the workpiece surface. The dial indicator 5 then displays the displacement value. By measuring the difference between two readings between the workpiece reference surface and the target surface, the target dimension (such as groove depth, step height, etc.) can be obtained. The measurement process is convenient and highly accurate, making it suitable for the inspection of components with strict requirements for critical dimensions.

[0027] As an optional implementation, the measuring head 3 is connected to the dial indicator 5 at a predetermined angle.

[0028] The measuring head 3 is connected to the dial indicator 5 at a predetermined angle. The predetermined angle refers to the angle between the measuring head 3 and the measuring rod of the dial indicator 5 being set to a fixed value during the design, such as 90 degrees, 60 degrees, 45 degrees, or other angles determined according to actual measurement needs.

[0029] The purpose of this structural design is to adapt to measurement scenarios for workpieces with different structures. In particular, when measuring grooves, steps, or other surfaces that are not horizontal or vertical, by setting the measuring head 3 at an appropriate angle, its tip can fully fit the target measuring surface of the workpiece, ensuring that the displacement in the axial direction of the measuring rod reflects the true change of the measured dimension.

[0030] In this embodiment, the predetermined angle connection between the measuring head 3 and the dial indicator 5 can be achieved by bending, integral molding, or setting an angle connector, so as to form a stable and reliable fixed angle, while avoiding loosening or angle deviation during use, and ensuring the consistency and repeatability of measurement accuracy.

[0031] By designing this structure, the device overcomes the reading error problem caused by fixed probe angle and poor contact in traditional measuring devices, and significantly improves the adaptability and measurement accuracy of irregular or complex parts.

[0032] As an optional implementation, the measuring head 3 is detachably connected to the dial indicator 5.

[0033] The end of the measuring rod of dial indicator 5 may be provided with internal threads or positioning holes to mate with the connecting end of measuring head 3. The connecting end of measuring head 3 is provided with corresponding external threads or pin structures. The operator can install the measuring head 3 with the required angle, length, or structural form onto dial indicator 5 according to actual measurement needs. This connection structure should have good axial fixation capability and anti-loosening performance to ensure that no shaking or displacement occurs during measurement.

[0034] By employing a detachable connection method, the measuring device of this invention possesses excellent expandability and versatility. Users can independently replace the measuring head 3 with different specifications, such as a 90-degree measuring head, a linear measuring head, a curved measuring head, or any other measuring head 3 of any degree, according to the structural characteristics of different workpieces, the measurement location, or the accuracy requirements, thereby adapting to complex measurement environments and improving measurement accuracy and flexibility.

[0035] As an optional implementation, the connecting seat 4 includes a base and a mounting bracket; the base is connected to the measuring platform 1 by screws 6; one end of the mounting bracket is connected to the base, and the free end is bent to mount the dial indicator 5.

[0036] The base serves as the fundamental support component for the connecting seat 4. Its bottom is fixedly connected to the measuring platform 1 via screws 6, ensuring a secure installation and preventing displacement due to force or vibration during measurement. The bottom surface of the base can directly contact the upper surface of the measuring platform 1, or shims can be installed as needed for fine-tuning or vibration absorption.

[0037] The mounting bracket is a supporting structure for connecting dial indicator 5. One end of it is connected to the base to form an integral part or to be fixedly connected by welding, screws, or other methods, while the other end is a free end. This free end is usually designed with an upward or inward curved structure to form a structural interface for wrapping, clamping, or hanging dial indicator 5.

[0038] In practical use, the operator can slide the dial indicator 5 into or insert it into the holder from the free end side. The holder structure provides a stable clamping force to prevent the dial indicator 5 from loosening during measurement. This structure has both good mechanical strength and facilitates disassembly, replacement, or fine-tuning of the installation angle and height of the dial indicator 5.

[0039] As an optional implementation, the free end of the card holder is provided with two clips 7; each clip 7 has a threaded hole near its end for inserting a bolt 8 to fix the dial indicator 5.

[0040] Each clamp 7 has a threaded hole near its end for mounting a bolt 8. The operator can tighten the bolt 8 to press the clamp 7 toward the dial indicator 5, thereby achieving a secure clamping of the dial indicator 5. Preferably, the threaded hole is arranged in a vertical or inclined direction so that the axis of the bolt 8 points toward the housing of the dial indicator 5 to ensure effective transmission of the locking force.

[0041] This structural design allows the clamping plate 7 to be adjusted within a certain range according to the diameter or shell shape of the dial indicator 5, adapting to different models or specifications of dial indicators 5. Through the combination of the two clamping plates 7 and the bolt 8, the dial indicator 5 can be quickly installed and removed without the aid of other tools, improving the ease of operation and practicality of the measuring device.

[0042] In addition, the clamp 7 can be made of elastic material or have a buffer pad layer to prevent scratches or deformation of the dial indicator 5 housing during clamping, thereby further improving the reliability and service life of the device.

[0043] As an optional implementation, the free end of the card holder is provided with a horizontal groove; the clip 7 can slide in the horizontal groove.

[0044] The horizontal groove is opened along the transverse (i.e., horizontal direction) of the card holder, preferably a strip-shaped through structure. Guide rails or guide edges are provided on both sides of the groove to limit the sliding direction of the clamping piece 7 and ensure that it moves along a predetermined trajectory. Each clamping piece 7 is provided with a sliding protrusion or slider structure that cooperates with the groove to achieve a low-friction and stable sliding connection.

[0045] With the above structural design, when installing dial indicator 5, the operator can adjust the distance between the two clamping plates 7 in the slide groove according to the actual diameter of the dial indicator 5 shell; after adjustment, the dial indicator 5 can be accurately fixed by tightening the locking bolts 8 on the clamping plates 7.

[0046] As an optional implementation, the tip of the measuring head 3 has a spherical arc structure.

[0047] The spherical arc shape can achieve good point contact on irregular or non-flat surfaces such as grooves, slopes, and curved surfaces, avoiding misalignment or uneven loading between the tip and the workpiece surface, effectively reducing measurement errors. Due to the natural transition rounded corner design of the spherical structure, no sharp contact points or local indentation will be generated during the contact process, making the measurement process more stable and avoiding reading fluctuations caused by probe bounce.

[0048] As an optional implementation, the measuring platform 1 is provided with a limit block, which is used to limit the workpiece 2 to be measured.

[0049] The limiting block is preferably made of metal or other high-strength materials, and its structure can be column-shaped, corner-shaped, or plate-shaped, and it is fixedly installed on the upper surface of the measuring platform 1. The height and position of the limiting block are pre-designed according to the geometric dimensions and placement method of the workpiece 2 to be measured, so that after the workpiece is placed on the measuring platform 1, one or more of its sides can abut against the limiting block, thereby preventing the workpiece from moving in the horizontal or vertical direction.

[0050] Through the physical contact of the limiting block, the workpiece can be quickly limited and coarsely positioned without the use of clamps or external force, making the measurement process simpler and more efficient, especially suitable for continuous measurement of batch workpieces.

[0051] In the preferred structure, the limiting block can be detachably connected to the measuring platform 1 via screws 6, or it can be integrally machined with the platform. Its installation position can be adjusted according to the specific workpiece requirements to accommodate the placement requirements of workpieces of different sizes and shapes.

[0052] As an optional implementation, the measuring platform 1 is provided with a first positioning hole; the limiting block is provided with a second positioning hole corresponding to the first positioning hole, and the limiting block is positioned on the measuring platform 1 by a positioning pin.

[0053] The first positioning hole is a hole opened on the surface of the measuring platform 1, and its position is precisely arranged according to the placement area of ​​commonly used workpieces; the second positioning hole is set on the limit block and forms a coaxial relationship with the first positioning hole in the assembled state, which facilitates the insertion of the positioning pin.

[0054] The locating pin is preferably a columnar structure with chamfered ends for easy insertion and removal, and provides good clearance control, ensuring stability and repeatability of the locating block after positioning. The locating pin can be a spring pin, tapered pin, or straight pin, and can be made of alloy steel or hard plastic to ensure wear resistance and structural strength.

[0055] As an optional implementation, a gasket is provided between the connecting seat 4 and the measuring platform 1.

[0056] A shim is placed between the bottom of the connector 4 and the contact surface of the measuring platform 1. The shim can be made of different materials and thicknesses according to actual installation requirements. Preferably, the shim can be made of stainless steel sheet, copper sheet, engineering plastic sheet, or other materials with certain hardness and dimensional stability, and the thickness can range from 0.1mm to 2mm to achieve high-precision fine adjustment.

[0057] The above technical solution has the following beneficial effects: by using a dial indicator in conjunction with a replaceable angle measuring head, a measurement accuracy of 0.01mm can be achieved, effectively meeting the high-precision detection requirements of key dimensions and avoiding quality problems caused by measurement errors; the measuring head can be replaced with a tip structure of different angles (such as 90 degrees or other angles) according to actual needs, which is suitable for the detection of workpieces with various shapes and limited positions, and has good versatility and flexibility.

[0058] The above-described specific embodiments of the invention further illustrate the purpose, technical solution, and beneficial effects of the invention. It should be understood that the above content is only for specific embodiments of the invention and is not intended to limit the scope of protection of the invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A measuring device, characterized in that, include: Measurement platform, dial indicator, connector and measuring head; The measurement platform is used to support the workpiece to be measured; The dial indicator is fixed above the measuring platform via the connecting seat of the measuring head; The dial indicator is connected to the measuring head and is used to inspect the workpiece to be tested.

2. The measuring device according to claim 1, characterized in that: The measuring head is connected to the dial indicator at a predetermined angle.

3. The measuring device according to claim 2, characterized in that: The measuring head is detachably connected to the dial indicator.

4. The measuring device according to claim 1, characterized in that: The connector includes a base and a card slot; The base is connected to the measuring platform by screws; One end of the card holder is connected to the base, and the free end is bent to install the dial indicator.

5. The measuring device according to claim 4, characterized in that: The free end of the card holder is provided with two clips; Each clip has a threaded hole near its end for inserting a bolt to secure the dial indicator.

6. The measuring device according to claim 5, characterized in that: The free end of the card holder is provided with a horizontal sliding groove; The clip can slide in the horizontal groove.

7. The measuring device according to claim 1, characterized in that: The tip of the measuring head has a spherical arc structure.

8. The measuring device according to claim 1, characterized in that: The measuring platform is equipped with a limit block, which is used to limit the workpiece to be measured.

9. The measuring device according to claim 8, characterized in that: The measuring platform is provided with a first positioning hole; The limiting block is provided with a second positioning hole corresponding to the first positioning hole, and the limiting block is positioned on the measuring platform by a positioning pin.

10. The measuring device according to claim 1, characterized in that: A gasket is provided between the connecting seat and the measuring platform.

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