A special gauge for measuring height difference with centering function

Abstract

The utility model relates to the technical field of rotation body spare and component processing manufacture and detection, concretely is a kind of special gauge of measuring height difference with centering function, including measuring piece main body frame, self-centering mechanism and lever dial gauge, the both ends of measuring piece main body frame are placed on outer ring, self-centering mechanism is fixedly connected at the bottom of measuring piece main body frame, self-centering mechanism includes three equal-diameter, center not on same straight line and respectively with the positioning reference surface of inner ring contact cylinder, lever dial gauge is installed on measuring piece main body frame, the distance of the axis of lever dial gauge and is consistent with the distance of rotation body spare and the part to be measured.The special gauge can more quickly and more accurately position the measured position when measuring the measured size, the operation is convenient during measuring process, and the detection efficiency is high;The operator does not need to have higher operation level, through automatic centering mechanism and high-precision measuring system itself, reduce the operation level of operator.

Description

Technical Field

[0001] This utility model relates to the field of rotary body component processing, manufacturing and testing technology, specifically to a special gauge with centering function for measuring height difference. Background Technology

[0002] In the field of machining, manufacturing, and testing technology for rotating parts, for rotating parts with specific structural characteristics, especially mechanical components such as aero-engines that require extremely high dimensional accuracy, accurate measurement of their relevant dimensions is a crucial step in ensuring product quality and production efficiency. Figure 1 As shown, the rotating part 9 consists of an outer ring 91, an inner ring 92, and a connecting part 93. The connecting part 93 is located between the outer ring 91 and the inner ring 92. The connecting part 93 is inclined downward from the inside to the outside. The top of the inner ring 92 is lower than the top of the outer ring 91. There is a part 931 to be measured on the connecting part 93. It is necessary to measure the height difference between the top of the outer ring 91 and the part 93.

[0003] Currently, the measurement methods for this type of structural feature mainly rely on operators using processing equipment, cutting tools, and other auxiliary tools to complete the inspection. However, this traditional measurement method has many limitations.

[0004] On the one hand, its practicality is greatly limited. Because the measurement process requires the cooperation of various auxiliary instruments and the operation procedure is relatively complex, it is difficult to carry out measurement work flexibly and efficiently in different production environments and testing scenarios, and it cannot well adapt to diverse production needs.

[0005] On the other hand, the accuracy of the tests is relatively poor. The accuracy of the measurement results is highly dependent on the skill level and experience of the operators, and human factors have a significant impact on the measurement results. In actual operation, even if the operators have certain skills, it is difficult to completely avoid measurement deviations caused by operating techniques, reading errors, etc., thus affecting the accuracy of product quality assessment.

[0006] Furthermore, this measurement method demands a high level of skill from operators. Operators not only need to be familiar with the use of various auxiliary tools, but also need to master complex measurement procedures and techniques. This undoubtedly increases the company's talent training costs and the difficulty of production management.

[0007] Given the limitations and accuracy issues of the existing measurement methods, it is necessary to develop a new type of measurement tool to overcome the shortcomings of the existing technology, improve the practicality and accuracy of measuring the relevant dimensions of rotating parts, and reduce the skill requirements of operators. Utility Model Content

[0008] To address the aforementioned issues, this invention provides a dedicated gauge for measuring height differences with a centering function. This gauge enables faster and more accurate positioning of the measured dimension, is convenient to operate during measurement, and has high testing efficiency. It does not require users to have a high level of operational skill, as the automatic centering mechanism and its own high-precision measurement system reduce the skill level required of users.

[0009] The technical solution of this utility model is as follows: A special gauge with centering function for measuring height difference is used to measure the height difference between the top of the outer ring and the part to be measured on the connecting part of a rotating part. The rotating part consists of an outer ring, an inner ring, and a connecting part. The connecting part is located between the outer ring and the inner ring and is inclined downward from the inside to the outside. The top of the inner ring is lower than the top of the outer ring. The inner hole of the inner ring is the positioning reference surface. The special gauge with centering function for measuring height difference includes a measuring part main frame, a self-centering mechanism, and a lever dial indicator. The two ends of the measuring part main frame are placed on the outer ring. The self-centering mechanism is fixedly connected to the bottom of the measuring part main frame. The self-centering mechanism includes three cylinders of equal diameter, whose centers are not on the same straight line and are respectively in contact with the positioning reference surface of the inner ring. The lever dial indicator is mounted on the measuring part main frame. The distance between the axis of the lever dial indicator and the distance between the rotating part and the part to be measured is consistent with the distance between the rotating part and the part to be measured.

[0010] The planes at both ends of the main frame of the measuring component that contact the outer ring are on the same plane.

[0011] At both ends of the main frame of the measuring component, there are positioning blocks that are in contact with the outer ring of the measuring component. The two positioning blocks are on the same plane and the flatness is 0.01mm.

[0012] The lever dial indicator is fixedly mounted on the main frame of the measuring component by screws.

[0013] A pin is installed between the lever dial indicator and the main frame of the measuring component.

[0014] The special fixture for measuring height difference with centering function also includes a calibration standard. The calibration standard consists of a main frame, a height positioning block, and a detection reference block. The two height positioning blocks are fixedly connected to both ends of the main frame, and the distance between the two height positioning blocks is consistent with the diameter of the outer ring. The detection reference block is fixedly connected to the middle of the main frame, and the distance between the detection reference block and the center of the two height positioning blocks is consistent with the distance between the rotating part and the part to be measured. The height difference between the top of the height positioning block and the top of the detection reference block is consistent with the height difference between the top of the outer ring and the part to be measured.

[0015] The tops of the two calibration standard positioning blocks are on the same plane and the flatness is 0.01 mm.

[0016] The material of the measuring component's level positioning block, the main frame of the measuring component, or the self-centering mechanism is CrWMn tool steel.

[0017] The main frame of the calibration standard, the height positioning block of the calibration standard, or the detection reference block of the calibration standard are made of CrWMn tool steel.

[0018] The lever dial indicator consists of a lever dial indicator transmission mechanism and a lever dial indicator body. The lever dial indicator transmission mechanism is fixedly installed on the main frame of the measuring component.

[0019] The beneficial effects of this utility model are as follows: 1. This utility model discloses a special gauge for measuring height difference with centering function. This special gauge for measuring height difference with centering function can accurately measure the height difference between the top of the outer ring and the part to be measured on the connecting part in a rotating part, meet the high-precision measurement requirements of specific structural dimensions of rotating parts, and ensure that the product quality meets the design requirements.

[0020] 2. This utility model discloses a special gauge for measuring height difference with a centering function. The special gauge for measuring height difference with a centering function ensures the concentricity of the gauge and the part during the measurement process through three-point contact between the self-centering mechanism and the inner ring positioning reference surface, eliminating the measurement error caused by positioning deviation and improving the accuracy and reliability of the measurement.

[0021] 3. This utility model discloses a special gauge for measuring height difference with centering function. The gauge is calibrated by calibration standard parts to ensure the accuracy of the measurement results.

[0022] 4. This utility model discloses a special gauge for measuring height difference with centering function. The special gauge for measuring height difference with centering function is made of CrWMn tool steel and has undergone overall quenching treatment, which improves the hardness and wear resistance of the parts, extends the service life of the gauge, and ensures the accuracy and stability during the measurement process. Attached Figure Description

[0023] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0024] In the attached diagram: Figure 1This is a schematic diagram of the structure of the rotating component to be tested; Figure 2 This is a three-dimensional exploded view of a special gauge with centering function for measuring height difference according to an embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of a special measuring tool with centering function for measuring height difference during calibration, according to an embodiment of this utility model. Figure 4 This is a three-dimensional schematic diagram of a special measuring tool with centering function for measuring height difference according to an embodiment of the present invention during measurement. Figure 5 This is a partial schematic diagram of the connection structure between the lever dial indicator and the main frame of the measuring component of a special measuring tool with centering function for measuring height difference according to an embodiment of this utility model. Figure 6 This is a three-dimensional structural diagram of a lever dial indicator with a centering function for measuring height difference, according to an embodiment of the present invention. The components represented by the various reference numerals in the diagram are: This utility model comprises: 1. a main frame for calibration standard parts; 2. a height positioning block for calibration standard parts; 3. a detection reference block for calibration standard parts; 4. a height positioning block for measuring parts; 5. a main frame for measuring parts; 6. a lever dial indicator transmission mechanism; 61. a spring; 62. a transmission rod; 7. a lever dial indicator body; 8. a self-centering mechanism; 9. a rotating part; 91. an outer ring; 92. an inner ring; 93. a connecting part; 931. a part to be measured; 10. a screw; and 11. a pin. Detailed Implementation

[0025] A specialized gauge with centering function is used to measure the height difference between the top of the outer ring 91 and the measured part 931 on the connecting part 93 in a rotating part 9. This gauge is particularly suitable for the machining and inspection of rotating parts with similar structural features, such as aero-engine products.

[0026] like Figure 2 As shown, the special gauge for measuring height difference with centering function consists of a special calibration standard and a special measuring gauge.

[0027] The dedicated calibration standard includes the main frame 1 of the calibration standard, the height positioning block 2 of the calibration standard, and the detection reference block 3 of the calibration standard.

[0028] The main frame 1 of the calibration standard is made of CrWMn tool steel and is subjected to overall quenching treatment. It is fixedly connected to two calibration standard height positioning blocks 2 and one calibration standard detection reference block 3 by argon arc welding.

[0029] The calibration standard height positioning block 2 is made of CrWMn tool steel, and is subjected to overall quenching treatment. Both ends are ground to ensure that the two ends are coplanar and have a common flatness of 0.01mm. The distance between the two calibration standard height positioning blocks 2 is consistent with the diameter of the outer ring 91 of the rotating part 9.

[0030] The calibration standard part testing reference block 3 is made of CrWMn tool steel, with overall quenching treatment and end face milling to ensure flatness of 0.01mm. The actual height difference between the end face of the calibration standard part and the end face of the positioning block 2 is recorded as the standard value for the detection height difference.

[0031] The special measuring tool includes the main frame of the measuring part 5, the height positioning block of the measuring part 4, the lever dial indicator and the self-centering mechanism 8.

[0032] The main frame 5 of the measuring component is made of CrWMn tool steel and is subjected to overall quenching treatment. It is fixedly connected to two measuring component height positioning blocks 4, a lever dial indicator transmission mechanism 6, and a self-centering mechanism 8 by argon arc welding.

[0033] The measuring component, the equal-height positioning block 4, is made of CrWMn tool steel, and is subjected to overall quenching treatment. Both ends are ground to ensure that the two ends are coplanar and have a common flatness of 0.01mm.

[0034] A lever dial indicator, also known as a lever gauge or reference gauge, uses a lever-gear or lever-screw transmission mechanism to convert the minute linear displacement of the probe into angular displacement via the lever mechanism. The gear transmission mechanism then amplifies the angular displacement, allowing the pointer to indicate the corresponding measurement value on the dial. It is an indicating measuring instrument. Its graduation value is 0.01 mm, and its measuring range is no greater than 1 mm. The dial has symmetrical graduations.

[0035] Lever dial indicators come in various types, including front, side, and end face types. They can be used to measure workpiece geometric errors and the correctness of their relative positions, and can also be used to measure lengths by comparison. They can also be used to measure form and position errors, and can measure parts that are difficult to measure directly with ordinary measuring tools, such as small holes, grooves, hole spacing, and coordinate dimensions.

[0036] A lever dial indicator mainly consists of a probe, a measuring rod, a dial, a pointer, a bezel, a body, and a commutator. The following is a structural example of the lever dial indicator used in this embodiment. It should be noted that the lever dial indicator is a commonly used measuring tool in the prior art. The accompanying drawings and related descriptions in this example are merely illustrative and do not represent the unique structure of all lever dial indicators. Any lever dial indicator available on the market that can be used for the measurement function in this scenario is acceptable. Figure 5 and Figure 6As shown, the lever dial indicator consists of a lever dial indicator transmission mechanism 6 and a lever dial indicator body 7. The lever dial indicator transmission mechanism 6 includes a spring 61 and a transmission rod 62. The transmission rod 62 can move in the direction of the arrow in the figure and drive the pointer of the dial indicator to rotate. The lever dial indicator is fixedly installed on the main frame 5 of the measuring component by screws 10 and pins 11 to ensure the stability and measurement accuracy of the lever dial indicator.

[0037] The self-centering mechanism 8 is made of CrWMn tool steel and is subjected to overall quenching treatment. The self-centering mechanism 8 includes three cylinders of equal diameter, whose centers are not on the same straight line and are in contact with the positioning reference surface of the inner ring 92 respectively. Through the principle of three-point circle determination, it ensures that the distance between the center of the part and the axis of the lever dial indicator transmission mechanism 6 is consistent with the distance between the measured feature and the center of the part.

[0038] The operating steps for this specialized height difference measuring tool with centering function are as follows: Calibration: Specialized measuring instruments are calibrated using dedicated calibration standards, such as... Figure 3 As shown, place the special measuring instrument on the special calibration standard and adjust the lever dial indicator so that its reading is consistent with the actual height difference between the end face of the calibration standard test reference block 3 and the calibration standard equal height positioning block 2.

[0039] Measurement: such as Figure 4 As shown, the calibrated special measuring fixture is placed on the rotating part 9, ensuring that the measuring part's level positioning block 4 is in contact with the outer ring 91, and the self-centering mechanism 8 is in contact with the positioning reference surface of the inner ring 92. The reading of the lever dial indicator is the height difference between the top of the outer ring 91 and the part to be measured 931 on the connecting part 93 in the rotating part 9.

[0040] This specialized gauge for measuring height differences, equipped with a centering function, ensures the accuracy and reliability of measurement results through a self-centering mechanism and dedicated calibration standards. It is easy to operate during measurement, reducing the skill requirements for operators. It can quickly and accurately locate the measured position, improving inspection efficiency, and is particularly suitable for the machining and inspection of rotating parts with similar structural features, such as those used in aero-engines.

Claims

1. A special gauge with centering function for measuring height difference, used to measure the height difference between the top of the outer ring (91) and the part to be measured (931) on the connecting part (93) in a rotating part (9), the rotating part (9) is composed of an outer ring (91), an inner ring (92) and a connecting part (93), the connecting part (93) is disposed between the outer ring (91) and the inner ring (92), the connecting part (93) is inclined downward from the inside to the outside, the top of the inner ring (92) is lower than the top of the outer ring (91), the inner hole of the inner ring (92) is the positioning reference surface, characterized in that, The measuring component includes a main frame (5), a self-centering mechanism (8), and a lever dial indicator. The two ends of the main frame (5) are placed on the outer ring (91). The self-centering mechanism (8) is fixedly connected to the bottom of the main frame (5). The self-centering mechanism (8) includes three cylinders of equal diameter, whose centers are not on the same straight line and are in contact with the positioning reference surface of the inner ring (92). The lever dial indicator is installed on the main frame (5). The distance between the axis of the lever dial indicator and the distance between the rotating part (9) and the part to be measured (931) are consistent.

2. The special gauge for measuring height difference with centering function according to claim 1, characterized in that, The planes at both ends of the main frame (5) of the measuring component that contact the outer ring (91) are on the same plane.

3. A special gauge for measuring height difference with centering function according to claim 2, characterized in that, The main frame (5) of the measuring component is provided with measuring component level positioning blocks (4) that contact the outer ring (91) at both ends. The two measuring component level positioning blocks (4) are on the same plane and the flatness is 0.01mm.

4. A special gauge for measuring height difference with centering function according to claim 1, characterized in that, The lever dial indicator is fixedly mounted on the main frame (5) of the measuring component by screws (10).

5. A special gauge for measuring height difference with centering function according to claim 4, characterized in that, A pin (11) is installed between the lever dial indicator and the main frame (5) of the measuring component.

6. A special gauge for measuring height difference with centering function according to claim 1, characterized in that, It also includes calibration standard parts, which consist of a calibration standard part main frame (1), calibration standard part height positioning blocks (2) and calibration standard part detection reference blocks (3). Two calibration standard part height positioning blocks (2) are fixedly connected to the two ends of the calibration standard part main frame (1). The distance between the two calibration standard part height positioning blocks (2) is consistent with the diameter of the outer ring (91). The calibration standard part detection reference block (3) is fixedly connected to the middle of the calibration standard part main frame (1). The distance between the calibration standard part detection reference block (3) and the center of the two calibration standard part height positioning blocks (2) is consistent with the distance between the rotating part (9) and the part to be measured (931). The height difference between the top of the calibration standard part height positioning block (2) and the top of the calibration standard part detection reference block (3) is consistent with the height difference between the top of the outer ring (91) and the part to be measured (931).

7. A special gauge for measuring height difference with centering function according to claim 6, characterized in that, The tops of the two calibration standard positioning blocks (2) are on the same plane and the flatness is 0.01 mm.

8. A special gauge for measuring height difference with centering function according to claim 3, characterized in that, The material of the measuring component leveling block (4), the measuring component main frame (5), or the self-centering mechanism (8) is CrWMn tool steel.

9. A special gauge for measuring height difference with centering function according to claim 6, characterized in that, The material of the main frame (1) of the calibration standard, the height positioning block (2) of the calibration standard, or the detection reference block (3) of the calibration standard is CrWMn tool steel.

10. A special gauge for measuring height difference with centering function according to claim 1, characterized in that, The lever dial indicator consists of a lever dial indicator transmission mechanism (6) and a lever dial indicator body (7). The lever dial indicator transmission mechanism (6) is fixedly installed on the main frame (5) of the measuring component.

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