A wedge plug gauge calibrating device

Abstract

The utility model belongs to the technical field of detection, especially relate to a wedge plug gauge calibration device. Including: special gauge block and special gauge block clamp, wherein special gauge block includes auxiliary gauge block and calibration gauge block, and special gauge block clamp includes base, left and right side fastening pressure disc, upper side fastening pressure disc, the base of special gauge block clamp is placed on the flat workbench surface, and left and right side screw rod connects the pressure disc and constitutes left and right side fastening pressure disc, can drive the pressure disc to move freely horizontally on the clamp, and the upper side two screw rods connect the pressure disc and constitute the upper side fastening pressure disc, make the pressure disc move freely vertically in the clamp.

Description

Technical Field

[0001] This utility model belongs to the field of testing technology, and in particular relates to a wedge feeler gauge calibration device. Background Technology

[0002] A wedge feeler gauge is a precision measuring instrument used to measure the thickness of minute gaps or crevices. It mainly consists of a wedge-shaped body, a frame, a digital display component or graduated scale, and other auxiliary parts. It can measure gaps, crevices, and flatness of parts with various complex shapes. Digital wedge feeler gauges, due to their high efficiency, are widely used in areas such as gap measurement of aerospace structural components, gap measurement of aero-engine component fits, gap measurement of aero-operating systems, and gap measurement of avionics equipment installations. According to JJF 1548-2015 "Calibration Specification for Wedge Feeler Gauges," indication error is a key metrological characteristic of wedge feeler gauges. To ensure that wedge feeler gauges meet usage requirements, their metrological characteristics must be calibrated regularly. Currently, when calibrating digital wedge feeler gauges, vernier calipers and gauge blocks are used as standards. The gauge block is tightly clamped between the outer jaws of the caliper according to the specifications. Then, the tip of the wedge measuring head is vertically placed into the dimensional space formed by the outer jaws of the caliper and another gauge block to obtain the indication error of the wedge feeler gauge. However, this calibration method, which uses calipers to clamp gauge blocks to create a dimensional space, suffers from instability in the dimensional space due to varying clamping tightness, leading to inaccurate calibration of the wedge feeler gauge readings. Furthermore, this method is cumbersome and inefficient. To address this issue, this invention presents a calibration device and method for wedge feeler gauges.

[0003] Traditional wedge feeler gauge calibration requires the use of standard instruments such as vernier calipers and gauge blocks to calibrate its indication error. When calibrating the wedge feeler gauge's indication error, it is necessary to ensure that the vernier caliper and the wedge feeler gauge cannot move, often requiring 2-3 people to work together. The two gauge blocks must be kept in fixed positions and cannot move relative to each other. Completely calibrating one wedge feeler gauge takes approximately 1-2 hours, and is entirely manual, making human control difficult, resulting in low calibration efficiency and susceptibility to human measurement errors that affect the calibration results. Summary of the Invention

[0004] The present invention provides a wedge feeler gauge calibration device and calibration method. By designing a calibration device, a set of gauge blocks are sequentially placed into a special gauge block fixture to form the internal dimension. This enables rapid calibration of the wedge feeler gauge indication error as required, reducing human intervention and improving calibration accuracy.

[0005] The technical solution of this invention is as follows: A wedge gauge calibration device, the device comprising: a dedicated gauge block and a dedicated gauge block fixture; wherein the dedicated gauge block includes an auxiliary gauge block and a calibration gauge block, and the dedicated gauge block fixture includes a base, left and right side clamping plates, and an upper clamping plate; The base of the special gauge block fixture is placed on a flat worktable. The left and right screws are connected to the pressure plate to form the left and right fixed pressure plates, which can drive the pressure plate to move freely horizontally on the fixture. The two upper screws are connected to the pressure plate to form the upper fixed pressure plate, which allows the pressure plate to move freely vertically within the fixture.

[0006] Furthermore, The base of the special gauge block fixture has a 1mm deep base groove at the bottom of the upper surface. The base groove is 73mm long and 30.5mm wide, and is used to fix and place the calibration gauge block.

[0007] Furthermore, Eight calibration gauge blocks are placed in the groove of the base. All calibration gauge blocks are Class 3 standard gauge blocks with dimensions of 1.10mm, 1.80mm, 2.00mm, 1.20mm, 3.00mm, 10.00mm, 7.00mm and 5.00mm respectively. These eight calibration gauge blocks can be combined to form four internal dimensions of 0.20mm, 7.00mm, 3.00mm and 5.00mm in one go.

[0008] Furthermore, The calibration block is higher than the lower surface of the base on both the left and right sides, and it fits tightly with the groove of the base in the vertical direction.

[0009] Furthermore, There are a total of 4 auxiliary gauge blocks. On the left are two identical 30.00mm standard gauge blocks, and on the right are two identical 20.00mm standard gauge blocks. The working surfaces of these 4 auxiliary gauge blocks are in contact with the placement of 8 calibration gauge blocks.

[0010] Furthermore, By rotating the left, right and top screws to move the pressure plate, the pressure plate is tightly pressed against the auxiliary gauge block, thereby pressing the auxiliary gauge block against the calibration gauge block, so that the working surface of the auxiliary gauge block and the working surface of the calibration gauge block are in contact to produce the internal dimension.

[0011] The beneficial effects of the present invention are as follows: The device and method for rapid calibration of wedge feeler gauges designed in this invention solve the problems of low calibration efficiency, limited measurement range, difficult reading, susceptibility to external interference, and high requirements for personnel operation skills of wedge feeler gauges. The main advantages are: (1) The device can be moved and fixed freely; (2) By designing a special calibration device, the relative position between the calibration block and the auxiliary block is fixed, thereby obtaining the required four internal dimension data, and thus ensuring the accuracy and reliability of the indication error reading; (3) The base groove is designed so that when different specifications of gauge blocks are placed, the groove can make the gauge blocks parallel to each other, while ensuring that the position of the thinner gauge block is fixed; (4) The calibration device can press the pressure plate from the top, left and right to fix the auxiliary gauge block, thus ensuring the stability of the gauge block; (5) By fixing the calibration block in the base groove of the calibration device, only one person is needed to operate independently to complete the calibration work. Therefore, the calibration device has great application value and good social and economic benefits. Attached Figure Description

[0012] Figure 1 Diagram of a wedge gauge calibration device; Figure 2 This is a diagram showing the placement of gauge blocks; Figure 3 Figure showing the clamping configuration of the calibration device; Explanation of the numbers in the diagram: 1—Left screw 2—Left clamping plate 3—Base 4—Upper screw 5—Upper clamping plate 6—Groove 7—Right clamping plate 8—Right screw 9—Calibration gauge block 10—30mm auxiliary gauge block 11—20mm auxiliary gauge block Detailed Implementation

[0013] The present invention will be further described in detail below through specific embodiments.

[0014] The calibration device for wedge feelers includes dedicated gauge blocks and dedicated gauge block fixtures. The dedicated gauge blocks include auxiliary gauge blocks and calibration gauge blocks, all of which are Class 3 standard gauge blocks. The dedicated gauge block fixture includes a base, left and right side clamping plates, and an upper clamping plate.

[0015] The base of the dedicated gauge block fixture rests on a flat worktable. The bottom surface of the fixture is a rectangular metal structure, with screws on the left and right sides connecting to pressure plates, allowing the pressure plates to move freely horizontally within the fixture to ensure the gauge blocks are securely fastened. Two dedicated pressure plates are located on the upper side, moved vertically within the fixture by screws. The bottom of the base of the fixture has a 1mm deep groove, 73mm long and 30.5mm wide, for fixing and placing calibration gauge blocks.

[0016] Eight calibration gauge blocks are placed within the base groove. These gauge blocks are all Class 3 standard gauge blocks with dimensions of 1.10mm, 1.80mm, 2.00mm, 1.20mm, 3.00mm, 10.00mm, 7.00mm, and 5.00mm, respectively. To ensure uniform force distribution on the auxiliary gauge blocks, 1.10mm and 1.20mm standard gauge blocks are added to reduce localized pressure concentration caused by abrupt changes in thickness. Placing the larger 10.00mm gauge block in the center ensures a uniform and reasonable distribution of calibration gaps. These eight calibration gauge blocks can be combined to form four internal dimensions: 0.20mm, 7.00mm, 3.00mm, and 5.00mm. Inserting the calibration gauge blocks sequentially into the base groove ensures that there is no relative displacement between the gauge blocks and the base after placement, while also meeting the flatness requirements of the gauge blocks when calibrating indication errors.

[0017] There are four auxiliary gauge blocks in total: two identical 30.00mm standard gauge blocks on the left and two identical 20.00mm standard gauge blocks on the right. The working surfaces of these four auxiliary gauge blocks are brought into contact with eight calibration gauge blocks. By rotating the screw, the pressure plate is moved to ensure a tight fit between the pressure plate and the auxiliary gauge blocks, thus guaranteeing that the auxiliary gauge blocks press firmly against the calibration gauge blocks and preventing relative movement between them. Because the gauge blocks themselves have adhesive properties, moving the upper and left / right pressure plates allows the working surfaces of the auxiliary gauge blocks to adhere to the working surfaces of the calibration gauge blocks, creating the internal dimensions.

[0018] A wedge feeler gauge calibration device is disclosed, which is used to calibrate the indication error of a wedge feeler gauge. The specific steps are as follows: 1. Place the calibration block. Place the calibration device on the calibration platform and fix it in place. Move the upper and left / right screws outward to ensure sufficient clearance inside the calibration device. Place standard gauge blocks of 1.10mm, 1.80mm, 2.00mm, 1.20mm, 3.00mm, 10.00mm, 7.00mm, and 5.00mm in sequence into the base groove, ensuring that these eight calibration gauge blocks have no relative displacement, and that both sides of the gauge blocks are higher than the lower surface of the base, while also fitting tightly with the base groove in the vertical direction.

[0019] 2. Debug and calibrate the device. Two sets of 30.00mm and 20.00mm auxiliary gauge blocks are placed sequentially on the calibration gauge block. First, the auxiliary gauge blocks are brought into contact with the calibration gauge block along the length of their measuring surfaces, ensuring initial contact at the end measuring surfaces to create preliminary adhesion. Then, they are slid parallel to each other to achieve complete engagement. Utilizing the self-adhesive properties of the gauge blocks, four auxiliary gauge blocks are similarly fixed above the calibration gauge block, ensuring no relative movement between these four blocks and the calibration gauge block below. Simultaneously, the upper screw is moved, causing the upper pressure plate to push the auxiliary gauge blocks downwards, ensuring a tight, gapless fit with the calibration gauge block. Then, the left and right screws are moved, pushing the pressure plates on both sides to fix the auxiliary gauge blocks, preventing horizontal movement. By continuously adjusting the position of the auxiliary gauge blocks until their working surfaces are completely aligned with the calibration gauge block's working surfaces, four internal dimensions of 0.20mm, 7.00mm, 3.00mm, and 5.00mm can be produced simultaneously for calibration.

[0020] 3. Calibrate the digital wedge gauge. Insert the wedge-shaped part of the wedge gauge into the inner dimension of the assembly, then pull back the moving measuring head so that its end face is flush with the calibration block and perpendicular to the measuring surface of the auxiliary block. Take a reading on the wedge gauge and record the data. Repeat the above steps to complete the calibration at other positions. After recording four data points, move the screws on both sides and the top to remove the auxiliary and calibration blocks. This completes the calibration of the wedge gauge's indication error.

[0021] like Figure 1 The image shows a wedge gauge calibration device. Figure 2 As shown, eight calibration gauge blocks of 1.10mm, 1.80mm, 2.00mm, 1.20mm, 3.00mm, 10.00mm, 7.00mm, and 5.00mm are placed sequentially from left to right into the groove of the base and tightened. Two auxiliary gauge blocks of 30.00mm and two of 20.00mm are then placed sequentially from left to right on top of the calibration gauge blocks. The pressure plate is controlled by the upper side of the screw and in three directions (left and right). Figure 3 The auxiliary gauge block can be secured by moving the pressure plate inward. After the calibration device is secured, place the wedge-shaped part of the wedge gauge into the inner dimension of the assembly, then pull back the moving measuring head so that the end face of the moving measuring head is in close contact with the calibration gauge block and perpendicular to the measuring surface of the auxiliary gauge block. At this time, take a reading on the wedge gauge. The difference between the reading and the nominal value of the calibration gauge block is the indication error at that point. Repeat the above operation, record all data after the measurement is completed, and complete the calibration work.

Claims

1. A wedge feeler gauge calibration device, characterized in that, The device includes: a special gauge block and a special gauge block fixture; wherein the special gauge block includes an auxiliary gauge block and a calibration gauge block, and the special gauge block fixture includes a base, left and right side clamping plates, and an upper clamping plate; The base of the special gauge block fixture is placed on a flat worktable. The left and right screws are connected to the pressure plate to form the left and right fixed pressure plates, which can drive the pressure plate to move freely horizontally on the fixture. The two upper screws are connected to the pressure plate to form the upper fixed pressure plate, which allows the pressure plate to move freely vertically within the fixture.

2. The wedge gauge calibration device according to claim 1, characterized in that, The base of the special gauge block fixture has a 1mm deep base groove at the bottom of the upper surface. The base groove is 73mm long and 30.5mm wide, and is used to fix and place the calibration gauge block.

3. The wedge gauge calibration device according to claim 2, characterized in that, Eight calibration gauge blocks are placed in the groove of the base. All calibration gauge blocks are Class 3 standard gauge blocks with dimensions of 1.10mm, 1.80mm, 2.00mm, 1.20mm, 3.00mm, 10.00mm, 7.00mm and 5.00mm respectively. These eight calibration gauge blocks can be combined to form four internal dimensions of 0.20mm, 7.00mm, 3.00mm and 5.00mm in one go.

4. The wedge gauge calibration device according to claim 3, characterized in that, The calibration block is higher than the lower surface of the base on both the left and right sides, and it fits tightly with the groove of the base in the vertical direction.

5. A wedge gauge calibration device according to claim 4, characterized in that, There are a total of 4 auxiliary gauge blocks. On the left are two identical 30.00mm standard gauge blocks, and on the right are two identical 20.00mm standard gauge blocks. The working surfaces of these 4 auxiliary gauge blocks are in contact with the placement of 8 calibration gauge blocks.

6. A wedge gauge calibration device according to claim 5, characterized in that, By rotating the left, right and top screws to move the pressure plate, the pressure plate is tightly pressed against the auxiliary gauge block, thereby pressing the auxiliary gauge block against the calibration gauge block, so that the working surface of the auxiliary gauge block and the working surface of the calibration gauge block are in contact to produce the internal dimension.

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