CN102128579B - Detecting device for measuring appearance with compound angle length - Google Patents

Abstract

The invention discloses a detecting device for measuring an appearance with compound angle length, comprising a bottom plate (1) for fixing a dial gauge and a gauge outfit support (5), wherein the gauge outfit support (5) is provided with a horizontal locating hole for horizontally placing a dial gauge outfit; a fastening screw hole passing through the horizontal locating hole is formed in the plane of the upper end of the gauge outfit support; a dial gauge outfit extends to the inside of the horizontal locating hole, extends out of a vertical end surface at one side of the gauge outfit support (5), and is fixed by a fastening screw (6); and a slope locating plate (3) and a rabbet long-side locating plate (4) for parallel locating rabbet parts are arranged on the bottom plate (1) positioned on the vertical end surface of the gauge outfit support. The detecting device disclosed by the invention can rapidly detect the dimensional tolerance of the length of the rabbet by utilizing the contact head of a dial gauge measuring device to be in contact with the rabbet, can rapidly and accurately detect the rabbet parts with compound angle length, and greatly improves the working efficiency and detecting quality under the condition of meeting the product precision requirement. The detecting tool can be widely used for detecting the similar parts.

Description

Length detection device for measuring shape with compound angle

technical field

The invention relates to a length detection device for measuring the composite angle of the shape.

Background technique

A large number of high-pressure working blades in aeroengines are a kind of parts that have high requirements on the length dimension L and have a compound-angle tenon shape. The detection of this part has always been a difficult point. The traditional measurement method is direct detection with an outer micrometer. Since the shape of the tenon has a quadrilateral with double angles in the length direction, it is difficult to find the correct position of the length dimension L of the tenon by manual detection. The detection position needs to be constantly adjusted during detection, the detection results are usually inaccurate and the efficiency is very low. Another method is to fix the dial gauge on the height micrometer, check the length dimension L with a standard block gauge, and then read the indication value of the dial gauge on the height micrometer to display the tolerance of the measured length. Due to the large number of tenons, the existing detection methods are not only inefficient and inaccurate in test results, but also very cumbersome in operation and difficult to grasp the quality progress.

Contents of the invention

The purpose of the present invention is to solve the problems existing in the prior art and provide a detection device with simple structure, convenient operation and high detection efficiency, which can be widely used for similar tenon parts.

The technical solution adopted by the present invention to solve the technical problem is: a length detection device with a compound angle for measuring the shape, including a bottom plate 1 and a gauge bracket 5 for fixing the dial gauge, and it is characterized in that the gauge bracket 5 is provided with a horizontal positioning hole for horizontally placing the head of the dial indicator, and its upper end plane is formed with a fastening screw hole passing through the horizontal positioning hole, and the head of the dial indicator extends into the horizontal positioning hole and protrudes from the head. The vertical end face on one side of the support 5 is fixed by the fastening screw 6, and the inclined plane positioning plate 3 and the long side positioning plate 3 of the tenon are arranged on the vertical end surface bottom plate 1 of the said head support in parallel.

Compared with the prior art, the present invention has the following beneficial effects.

The detection device of the present invention has simple structure and convenient operation, and can quickly detect the length dimension tolerance of the tenon by using the contact of the dial indicator measuring device to contact the tenon. It can quickly and accurately detect tenon parts with compound angle lengths, and greatly improve work efficiency and detection quality under the condition of meeting product accuracy requirements. The detection tool can be widely used in the detection of similar parts.

Description of drawings

Fig. 1 is a schematic diagram of the working principle of the length detection device for measuring the shape with compound angles of the present invention.

FIG. 2 is a top view of FIG. 1 .

In the figure: 1 bottom plate, 2 side positioning plate, 3 inclined plane positioning plate, 4 tenon long side positioning plate, 5 gauge head bracket, 6 set screw, dial gauge, 8 screw, 9 cylindrical pin, 10 tenon of the measured part.

Detailed ways

Refer to Figure 1 and Figure 2. In the described embodiment of the length detection device with compound angles in the measurement shape, the bottom plate 1 of the fixed dial gauge and the gauge head bracket 5 are solid joints perpendicular to each other. The gauge bracket 5 is shaped on a horizontal positioning hole for horizontally placing the dial indicator 7 gauges. A fastening screw hole passing through the horizontal positioning hole is formed on the upper end plane of the horizontal positioning hole. The dial gauge head stretches into the above-mentioned horizontal positioning hole, and stretches out from the vertical end face on one side of the gauge head support. During use, the dial gauge gauge stretching into the above-mentioned horizontal positioning hole is fixed by the fastening screw 6 . On the bottom plate 1 of the vertical end surface of the above-mentioned meter bracket 5, there are provided a slope positioning plate 3 and a tenon long side positioning plate 3 for parallel positioning of the tenon parts. The inclined-plane positioning plate 3 is integrated with the base plate 1 through screws 8 cylindrical pins 9 . The side positioning plate 2 that is higher than the slope of the inclined plane positioning plate 3 is vertically fixed on the vertical end face on the left side of the inclined plane positioning plate 3, and the long side positioning plate 4 is a positioning block for positioning the length direction of the tenon parts. It is integrated with the inclined-plane positioning plate 3 to form an inclined-plane step, and the vertical surface of the inclined-plane step is parallel to the length direction of the tenon part.

Before testing, put the calibration piece 10 of the tenon of the part under test into the correct position in Figure 2, press one end of the dial gauge 7 into the horizontal positioning hole of the gauge bracket 5, so that the dial gauge 7 is in a horizontal state, and place the dial gauge Adjust to zero, and then fix it by fastening the screw 6 to prevent the dial indicator positioning shaft pin from rotating in the horizontal positioning hole in the gauge head bracket 5. At this time, adjust the mechanical lever dial gauge 7 so that the contact of the dial gauge measuring device is in contact with the outer edge of the measured part, and the length of the tenon is checked. Use the tenon of the measured part to contact the contact of the dial gauge measuring device, and record the difference between the left and right indications of the dial gauge as the length error of the measured part. This kind of direct measurement is to directly measure the measured parameter, and its value is directly read by the instrument, which is called the direct measurement method.

Claims (3)

1. a kind of measuring profile has the length detecting device of compound angle, comprises, the base plate (1) and gauge bracket (5) of fixing dial indicator, it is characterized in that, described gauge bracket (5) is provided with transverse Place the horizontal positioning hole of the dial indicator head, and its upper end plane is shaped with a fastening screw hole passing through the horizontal positioning hole, and the dial indicator head extends into the horizontal positioning hole to extend the meter bracket (5). The vertical end face of the side is fixed by the fastening screw (6), and is located on the bottom plate (1) of the vertical end face of the meter bracket, and is provided with a slope positioning plate (3) for parallel positioning of the tenon parts and a tenon long side positioning plate (4) . 2. the measuring profile as claimed in claim 1 has the length detecting device of compound angle, it is characterized in that, the side positioning plate (2) higher than the inclined plane positioning plate (3) slope is vertically fixed on the left side of the inclined plane positioning plate (3) side vertical end face. 3. The length detection device for measuring the compound angle of the measuring shape according to claim 1, characterized in that, the long side positioning plate (4) is a positioning block for positioning the length direction of the tenon part. the

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