Six-line type rupture membrane nick residual thickness automatic measurement system and method

Abstract

The invention belongs to the technical field of diaphragm measurement, and particularly relates to a six-line type rupture diaphragm nick residual thickness automatic measurement system and method. According to the technical scheme, the six-line type automatic measurement system for the residual thickness of the nick of the rupture membrane comprises a base, a position change mechanism and a measurement sensor, the position change mechanism comprises an electric rotary table and an electric displacement table, the electric displacement table is installed on the base, the electric rotary table is installed at the output end of the electric displacement table, and the six-line type blasting diaphragm with nicks is installed on the electric rotary table; the measuring sensor comprises a line laser sensor and a point laser sensor, a line laser support and a point laser support are fixed on the base, the line laser sensor is installed on the line laser support, the point laser sensor is installed on the point laser support, and the line laser sensor and the point laser sensor are arranged on the two sides of the six-line type blasting diaphragm respectively. The invention provides a six-line type rupture membrane nick residual thickness automatic measurement system and method.

Description

Technical Field

[0001] The invention belongs to the technical field of diaphragm measurement, and particularly relates to a six-wire bursting diaphragm notch residual thickness automatic measurement system and method. Background Art

[0002] The diaphragm is a part widely used in aerospace products. In aerospace products, the diaphragm has the functions of adjustment, opening, sealing, etc. When the starter starts the gunpowder to explode, the high pressure breaks through the notch of the diaphragm, and the diaphragm breaks at the notch, providing a channel for the discharge of gas, thereby realizing the opening function of the engine. For metal diaphragms, six-line, cross-shaped, I-shaped and other shapes are usually engraved on them to improve the rupture effect of the metal diaphragm.

[0003] At present, the research on diaphragms is focused on the direction of sensitive components. Diaphragm components are present in some pressure reducing valves, pressure regulating valves, and pressure stabilizing valves. The function of these components is to physically deform in response to changes in pressure values ​​to stabilize the outlet pressure of the valve. There are few studies on diaphragms with bursting properties. The research on bursting diaphragms mainly focuses on the bursting of diaphragms with a specific notch structure under different diaphragm types, and lacks research on the bursting of diaphragms with different notch shapes.

[0004] The residual thickness of the notch is one of the important indicators for evaluating the performance of the diaphragm. At present, there is no automatic measurement system for the residual thickness of the notch of the six-wire burst diaphragm. In actual production, a large number of sampling burst tests are relied on to ensure the reliability of the same batch of products. This method often has problems such as low pass rate, low efficiency, and low reliability. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the object of the present invention is to provide a six-wire bursting disk sheet notch residual thickness automatic measurement system and method.

[0006] The technical solution adopted by the present invention is:

[0007] A six-wire bursting diaphragm notch residual thickness automatic measurement system comprises a base, a displacement mechanism and a measuring sensor; the displacement mechanism comprises an electric turntable and an electric translation table, the electric translation table is mounted on the base, the electric turntable is mounted on the output end of the electric translation table, and the six-wire bursting diaphragm with notches is mounted on the electric turntable; the measuring sensor comprises a line laser sensor and a point laser sensor, a line laser bracket and a point laser bracket are fixed on the base, the line laser sensor is mounted on the line laser bracket, the point laser sensor is mounted on the point laser bracket, and the line laser sensor and the point laser sensor are respectively arranged on both sides of the six-wire bursting diaphragm.

[0008] The measuring sensor generates laser light, which is projected onto the surface of the diaphragm to be measured through a special lens group. The laser light forms diffuse reflection on the surface of the diaphragm to be measured, and the reflected light passes through the high-quality optical system and is projected onto the photosensitive matrix to form an image. The controller calculates the imaging and obtains the position data. The computer-side software uses digital signal processing technology to analyze and process the position data, filter out the ambient light interference noise, calculate the notch depth and bottom wall thickness, and then obtain the residual thickness of the notch. The position change mechanism and the measuring sensor cooperate with each other to complete the residual thickness detection of notches at different positions.

[0009] The automatic measurement system for the residual thickness of the six-line blasting diaphragm notch of the present invention solves the problem of measuring the six-line notch of the diaphragm. Through the automatic coordination of radial translation and circumferential rotation, the automatic scanning measurement of the six-line notch is completed, which reduces the labor intensity of personnel, improves production efficiency, and reduces the waste of raw materials. The present invention can efficiently and stably complete the full coverage measurement of the six-line notch area, and provides support for the quantitative description of the relationship between the residual thickness of the diaphragm notch and the bursting pressure.

[0010] As a preferred solution of the present invention, the electric translation platform comprises a slide rail fixed on a base, a slide seat is slidably connected to the slide rail, and the electric turntable is mounted on the slide seat.

[0011] As a preferred solution of the present invention, the electric turntable includes a support frame, the support frame is fixed on the sliding seat, and the electric turntable body is installed on the support frame.

[0012] As a preferred solution of the present invention, the point laser bracket is located between the supporting frames.

[0013] A six-wire bursting membrane notch residual thickness automatic measurement method, comprising the following steps:

[0014] S1: The measuring sensor generates laser light, which is projected onto the surface of the diaphragm to be measured through a special lens group. The laser light forms diffuse reflection on the surface of the diaphragm to be measured, and the reflected light passes through a high-quality optical system and is projected onto the photosensitive matrix to form an image.

[0015] S2: The controller calculates the imaging and obtains the position data;

[0016] S3: The computer software uses digital signal processing technology to analyze and process the position data, calculate the notch depth and bottom wall thickness, and then obtain the notch residual thickness;

[0017] S4: The position changing mechanism and the measuring sensor cooperate with each other to complete the residual thickness detection of the notches at different positions.

[0018] As a preferred solution of the present invention, in step S3, H1 is the bottom wall thickness, H2 is the notch depth, the notch depth and the bottom thickness are measured respectively, and the notch residual thickness H=H1-H2.

[0019] As a preferred embodiment of the present invention, in step S3, the measuring sensor scans the surface shape of the measured membrane, takes the highest top surface as the reference datum for the notch depth, calculates the depth value of each sampling point on the notch, and takes the maximum depth value as the notch depth H2.

[0020] As a preferred embodiment of the present invention, in step S3, the distance between the line laser sensor and the point laser sensor is h. When the diaphragm is placed between the line laser sensor and the point laser sensor, the line laser sensor and the point laser sensor measure the distances from the sensors to the two surfaces of the diaphragm as h1 and h2 respectively. Then, the bottom wall thickness of the diaphragm is H1=h-h1-h2.

[0021] As a preferred solution of the present invention, in step S3, before calculating the notch depth and the bottom wall thickness, the ambient light interference noise is filtered out.

[0022] As a preferred solution of the present invention, step S4 is specifically:

[0023] The electric translation stage drives the diaphragm to be measured to translate step by step until the residual thickness detection of the notches at different positions in the same radial direction is completed;

[0024] The electric turntable drives the diaphragm to be tested to rotate step by step until the residual thickness detection of the notches at different positions on the same circumference is completed.

[0025] The beneficial effects of the present invention are:

[0026] The automatic measurement system for the residual thickness of the six-line blasting diaphragm notch of the present invention solves the problem of measuring the six-line notch of the diaphragm. Through the automatic coordination of radial translation and circumferential rotation, the automatic scanning measurement of the six-line notch is completed, which reduces the labor intensity of personnel, improves production efficiency, and reduces the waste of raw materials. The present invention can efficiently and stably complete the full coverage measurement of the six-line notch area, and provides support for the quantitative description of the relationship between the residual thickness of the diaphragm notch and the bursting pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of a six-wire bursting diaphragm;

[0029] Figure 3 is a flow chart of the measuring method of the present invention;

[0030] Figure 4 This is a schematic diagram of the calculation of the residual thickness of the membrane notch;

[0031] Figure 5 It is a schematic diagram of the notch depth measurement principle;

[0032] Figure 6 This is the schematic diagram of bottom thickness detection.

[0033] In the figure: 1-base; 2-electric turntable; 3-electric translation stage; 4-line laser sensor; 5-point laser sensor; 6-line laser bracket; 7-point laser bracket; 8-diaphragm; 9-notch. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0036] like Figure 1 and Figure 2 As shown, the automatic measurement system for the residual thickness of the notch 9 of the six-line bursting diaphragm 8 of this embodiment includes a base 1, a displacement mechanism and a measuring sensor; the displacement mechanism includes an electric turntable 2 and an electric displacement table 3, the electric displacement table 3 is mounted on the base 1, the electric turntable 2 is mounted on the output end of the electric displacement table 3, and the six-line bursting diaphragm 8 with the notch 9 is mounted on the electric turntable 2; the measuring sensor includes a line laser sensor 4 and a point laser sensor 5, a line laser bracket 6 and a point laser bracket 7 are fixed on the base 1, the line laser sensor 4 is mounted on the line laser bracket 6, the point laser sensor 5 is mounted on the point laser bracket 7, and the line laser sensor 4 and the point laser sensor 5 are respectively arranged on both sides of the six-line bursting diaphragm 8. The line laser is used to measure the depth of the notch 9, and the point laser and the line laser jointly complete the bottom wall thickness measurement.

[0037] The measuring sensor generates laser light, which is projected onto the surface of the diaphragm 8 to be measured through a special lens group. The laser light forms diffuse reflection on the surface of the diaphragm 8 to be measured, and the reflected light passes through the high-quality optical system and is projected onto the photosensitive matrix to form an image. The controller calculates the imaging and obtains the position data. The computer-side software uses digital signal processing technology to analyze and process the position data, filter out the ambient light interference noise, calculate the depth of the notch 9 and the bottom wall thickness, and then obtain the residual thickness of the notch 9. The position change mechanism and the measuring sensor cooperate with each other to complete the residual thickness detection of the notch 9 at different positions.

[0038] The automatic measurement system for the residual thickness of the six-line scoring 9 of the diaphragm 8 of the present invention solves the measurement problem of the six-line scoring 9 of the diaphragm 8. Through the automatic coordination of radial translation and circumferential rotation, the automatic scanning measurement of the six-line scoring 9 is completed, which reduces the labor intensity of personnel, improves production efficiency, and reduces the waste of raw materials. The present invention can efficiently and stably complete the full coverage measurement of the six-line scoring 9 area, and provides support for the quantitative description of the relationship between the residual thickness of the scoring 9 of the diaphragm 8 and the bursting pressure.

[0039] The electric translation platform 3 includes a slide rail fixed on the base 1 , a slide seat is slidably connected to the slide rail, and the electric turntable 2 is installed on the slide seat.

[0040] The electric turntable 2 comprises a support frame, which is fixed on a sliding seat, and the main body of the electric turntable 2 is mounted on the support frame. The point laser bracket 7 is located between the support frames.

[0041] like Figure 3 As shown, the automatic measurement method of the residual thickness of the six-wire bursting membrane 8 notch 9 of this embodiment includes the following steps:

[0042] S1: The measuring sensor generates laser light, which is projected onto the surface of the diaphragm 8 to be measured through a special lens group; the laser light forms diffuse reflection on the surface of the diaphragm 8 to be measured, and the reflected light passes through a high-quality optical system and is projected onto the photosensitive matrix to form an image;

[0043] S2: The controller calculates the imaging and obtains the position data;

[0044] S3: The computer software uses digital signal processing technology to analyze and process the position data, filter out the ambient light interference noise, calculate the depth of the notch 9 and the bottom wall thickness, and then obtain the residual thickness of the notch 9;

[0045] S4: The position changing mechanism and the measuring sensor cooperate with each other to complete the residual thickness detection of the notches 9 at different positions.

[0046] The bottom cross section of the diaphragm 8 is as follows Figure 4In step S3, H1 is the bottom wall thickness, H2 is the notch depth, the notch depth and the bottom thickness are measured respectively, and the notch residual thickness H = H1-H2.

[0047] The principle of notch depth detection is as follows Figure 5 As shown in the figure, ABCDE are the upper surfaces of the bottom surface of the diaphragm 8, and BCD is the notch. The measuring sensor scans the surface shape, takes AB and DE as the notch depth reference, calculates the depth value of each sampling point on the notch, and then calculates the maximum value of the depth to obtain the notch depth H2.

[0048] The principle of bottom wall thickness detection is as follows Figure 6 As shown. The distance between the line laser sensor 4 and the point laser sensor 5 is h. When the diaphragm 8 is placed between the line laser sensor 4 and the point laser sensor 5, the distances from the sensors to the two surfaces of the diaphragm 8 measured by the line laser sensor 4 and the point laser sensor 5 are h1 and h2 respectively. Then the bottom wall thickness of the diaphragm 8 is H1 = h-h1-h2.

[0049] Step S4 is specifically as follows:

[0050] The electric translation stage 3 drives the diaphragm 8 to translate step by step until the residual thickness detection of the notches 9 at different positions in the same radial direction is completed;

[0051] The electric turntable 2 drives the film 8 to be tested to rotate step by step until the residual thickness detection of the notches 9 at different positions on the same circumference is completed.

[0052] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A six-wire bursting membrane notch residual thickness automatic measurement system, characterized by: The invention comprises a base (1), a displacement mechanism and a measuring sensor; the displacement mechanism comprises an electric turntable (2) and an electric displacement platform (3); the electric displacement platform (3) is mounted on the base (1); the electric turntable (2) is mounted on the output end of the electric displacement platform (3); a six-line bursting diaphragm (8) provided with notches (9) is mounted on the electric turntable (2); the measuring sensor comprises a line laser sensor (4) and a point laser sensor (5); a line laser bracket (6) and a point laser bracket (7) are fixed on the base (1); the line laser sensor (4) is mounted on the line laser bracket (6); the point laser sensor (5) is mounted on the point laser bracket (7); and the line laser sensor (4) and the point laser sensor (5) are respectively arranged on both sides of the six-line bursting diaphragm (8).

2. The six-wire bursting disc residual thickness automatic measurement system according to claim 1 is characterized by: The electric displacement platform (3) comprises a slide rail fixed on a base (1), a slide seat is slidably connected to the slide rail, and the electric turntable (2) is mounted on the slide seat.

3. The six-wire bursting disc residual thickness automatic measurement system according to claim 1 is characterized by: The electric turntable (2) comprises a support frame, which is fixed on a sliding seat, and the electric turntable body is mounted on the support frame.

4. The six-wire bursting disc residual thickness automatic measurement system according to claim 3 is characterized by: The point laser bracket (7) is located between the support frames.

5. A method for automatically measuring the residual thickness of a six-wire bursting disc notch, using the automatic measuring system for the residual thickness of a six-wire bursting disc notch according to claim 1, characterized in that: The following steps are involved: S1: The measuring sensor generates laser light, which is projected onto the surface of the measured diaphragm (8) through a special lens group; the laser light forms diffuse reflection on the surface of the measured diaphragm (8), and the reflected light passes through a high-quality optical system and is projected onto a photosensitive matrix to form an image; S2: The controller calculates the imaging and obtains the position data; S3: The computer software uses digital signal processing technology to analyze and process the position data, calculate the notch depth and bottom wall thickness, and then obtain the notch residual thickness; S4: The position changing mechanism and the measuring sensor cooperate with each other to complete the residual thickness detection of the notches at different positions.

6. The method for automatically measuring the residual thickness of six-line bursting disc notches according to claim 5 is characterized by: In step S3, H1 is the bottom wall thickness, H2 is the notch depth, the notch depth and the bottom thickness are measured respectively, and the notch residual thickness H=H1-H2.

7. The method for automatically measuring the residual thickness of six-line bursting disc notches according to claim 6 is characterized by: In step S3, the measuring sensor scans the surface shape of the measured membrane (8), takes the highest top surface as the reference datum of the notch depth, calculates the depth value of each sampling point on the notch, and takes the maximum depth value as the notch depth H2.

8. The method for automatically measuring the residual thickness of six-line bursting disc notches according to claim 6 is characterized by: In step S3, the distance between the line laser sensor (4) and the point laser sensor (5) is h. When the diaphragm (8) is placed between the line laser sensor (4) and the point laser sensor (5), the distances between the sensors and the two surfaces of the diaphragm (8) measured by the line laser sensor (4) and the point laser sensor (5) are h1 and h2 respectively, and the bottom wall thickness is H1 = h-h1-h2.

9. The method for automatically measuring the residual thickness of six-line bursting disc notches according to claim 5, characterized in that: In step S3, before calculating the notch depth and the bottom wall thickness, the ambient light interference noise is filtered out.

10. The method for automatically measuring the residual thickness of six-line bursting disc notches according to claim 5, characterized in that: Step S4 is specifically as follows: The electric translation stage (3) drives the diaphragm (8) to be measured to translate step by step until the residual thickness detection of the notches at different positions in the same radial direction is completed; The electric turntable (2) drives the film (8) to be tested to rotate step by step until the residual thickness detection of the notches at different positions in the same circumferential direction is completed.

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