A system for preparing and measuring mechanical properties of a cladding, insulation layer test sample

Abstract

This utility model belongs to the field of propellant performance testing technology and discloses a sample preparation and measurement system for testing the mechanical properties of coating layers and insulation layers. The system includes a control screen (3), a punching cylinder (4), a punching blade (5), a housing (6), a safety door (8), and a laser position sensor (9). The bottom surface of the housing (6) is equipped with a servo motor (10), a precision lead screw (11), a precision slide rail (12), a precision slider (13), and a punching platform (14). The top surface is equipped with the punching cylinder (4). The fixed end of the punching cylinder (4) is fixedly connected to the housing (6), and the telescopic end of the punching cylinder (4) is fixed with the punching blade (5). The technical solution of this utility model can realize an automated and continuous operation process for preparing samples for testing the mechanical properties of coating layers and insulation layers of composite solid propellants.

Description

Technical Field

[0001] This utility model belongs to the field of propellant performance testing technology, specifically relating to a sample preparation and measurement system for testing the mechanical properties of coating layers and insulation layers. Background Technology

[0002] The propellant coating and insulation layer play a crucial role in solid rocket motors. Located between the propellant and the engine casing, they must withstand the high pressure and high-temperature combustion gas erosion of the combustion chamber, as well as the complex mechanical loads (such as vibration, impact, and acceleration) generated during engine operation. They need to possess excellent mechanical properties to withstand the various stresses generated during engine storage, transportation, ignition, and flight. To ensure that the mechanical properties of the propellant coating and insulation layer meet the requirements of engine operation, mechanical property testing of the coating and insulation layer materials is necessary. Before performance testing, dumbbell-shaped specimens need to be prepared. The traditional sample preparation process involves two steps: manually cutting a specimen of a specified size from the insulation layer sheet using a manual sample preparation machine, and then measuring the thickness of the working part of the specimen using a thickness gauge. Both specimen preparation and thickness measurement need to be performed individually, resulting in low efficiency, high labor intensity, and high safety risks. Furthermore, human error can easily lead to inaccuracies, affecting the accuracy of the insulation layer's mechanical property test results. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] The technical problem this invention aims to solve is that sample preparation and thickness measurement both need to be performed one by one, resulting in low efficiency, high labor intensity, and high safety risks.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, this utility model provides a sample preparation and measurement system for mechanical property testing of coating layer and insulation layer, including control screen 3, punching cylinder 4, punching blade 5, shell 6, safety door 8, and laser position sensor 9;

[0007] The bottom surface inside the outer casing 6 is equipped with a servo motor 10, a precision lead screw 11, a precision slide rail 12, a precision slider 13, and a punching platform 14. The top surface is equipped with a punching cylinder 4. The fixed end of the punching cylinder 4 is fixedly connected to the outer casing 6, and a punching blade 5 is fixed on the telescopic end of the punching cylinder 4.

[0008] The laser position sensor 9 is located on one side of the punching blade 5. When the punching blade 5 falls, the probe of the laser position sensor 9 contacts the surface of the sample to measure the thickness of the sample.

[0009] The precision slide rail 12 is fixed to the bottom of the housing 6, the precision slider 13 can slide on the precision slide rail 12, the precision lead screw 11 and the precision slider 13 cooperate with each other, the servo motor 10 is used to drive the precision lead screw 11 to rotate, and the punching platform 14 is fixedly connected to the precision slider 13.

[0010] The control screen is used to control the electrical actions within the measurement system and to display the sample thickness measured by the laser position sensor 9.

[0011] The punching cylinder has four cylinders with a diameter of 200mm, a maximum output of 19790N, and a maximum speed of 100mm / s.

[0012] The outer shell 6 is made of 45# steel with precision machining and the surface is chrome plated.

[0013] The side panel 7 of the outer shell 6 is made of brown acrylic plexiglass.

[0014] Among them, the safety door 8 is equipped with a safety light curtain 15 and a safety access control 16.

[0015] Among them, the laser position sensor 9 is a contact displacement sensor.

[0016] Among them, safety door 8 is made of explosion-proof plexiglass.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model has the following beneficial effects: by using servo motor control and driving, and setting multiple walking positions, it can realize the automated and continuous operation process of the test sample preparation process for mechanical property testing of coating layer and insulation layer of composite solid propellant, reduce manual operation links, reduce operational safety risks, improve the intrinsic safety level, and improve the efficiency, accuracy and quality consistency of sample preparation. Attached Figure Description

[0019] Figure 1 A schematic diagram of the sample preparation and measurement system for testing the mechanical properties of the coating layer and insulation layer;

[0020] Figure 2 This is a schematic diagram of the sample preparation and measurement system for testing the mechanical properties of the coating layer and insulation layer. Detailed Implementation

[0021] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0022] This embodiment of a sample preparation and measurement system for testing the mechanical properties of a coating layer and insulation layer includes an electrical box 1, a Y-axis module 2, a control screen 3, a punching cylinder 4, a punching blade 5, a housing 6, a side panel 7, a safety door 8, and a laser position sensor 9. The Y-axis module 2 consists of a servo motor 10, a precision lead screw 11, a precision slide rail 12, a precision slider 13, and a punching platform 14. The servo motor 10, precision lead screw 11, precision slide rail 12, precision slider 13, and punching platform 14 are located on the bottom surface inside the housing 6, and the punching cylinder 4 is located on the top surface. The fixed end of the punching cylinder 4 is fixedly connected to the housing 6, and the punching blade 5 is fixed to the telescopic end of the punching cylinder 4.

[0023] The laser position sensor 9 is located on one side of the punching blade 5. When the punching blade 5 falls, the probe of the laser position sensor 9 contacts the surface of the sample to measure the thickness of the sample.

[0024] The precision slide rail 12 is fixed to the bottom of the housing 6, the precision slider 13 can slide on the precision slide rail 12, the precision lead screw 11 and the precision slider 13 cooperate with each other, the servo motor 10 is used to drive the precision lead screw 11 to rotate, and the punching platform 14 is fixedly connected to the precision slider 13.

[0025] The control screen is used to control the electrical actions within the measurement system and to display the sample thickness measured by the laser position sensor 9.

[0026] The electrical box 1 is internally composed of a PLC, a leakage current protector, a 24V power supply, and other electronic components. The PLC is from Huichuan, the leakage current protector is from Chint, and the 24V power supply is from Mean Well. The servo motor 10 is a Huichuan explosion-proof servo motor, the precision lead screw 11 is from HIWIN (C7 precision), the precision slide rail 12 is from HIWIN (C7 precision), and the punching platform 14 is precision machined from 45# steel with a chrome-plated surface to prevent rust and harden the surface. The control screen 3 consists of a touchscreen and a touchscreen protection box. The touchscreen is from Weintek, and the touchscreen protection box is made of standard aluminum. The punching cylinder 4 is an SIJ type cylinder with a guide rod, 200mm in diameter, with a maximum output of 19790N and a maximum speed of 100mm / s. The punching blade 5 is machined from high-quality DC53 abrasive steel, and the punching power is driven by a compressed air cylinder. The outer shell 6 is precision machined from 45# steel with a chrome-plated surface to prevent rust and harden the surface. The side panel 7 is made of brown acrylic plexiglass. The safety door 8 is made of explosion-proof plexiglass and has a double safety feature: a safety light curtain 15 and a safety access control 16. The equipment will stop working when the door is opened, thus ensuring the safety of the operators. The laser position sensor 9 uses a contact displacement sensor to detect the position, converting voltage into numerical value, with a measurement accuracy of up to 0.05mm. Before sample preparation, the operator places the insulation layer tablet into the cutting plate, closes the safety door 8, and presses the start button. After the equipment starts running, the servo motor 10 drives the insulation layer tablet to the bottom of the cutting blade 5. The cutting blade 5 presses down and cuts the tablet into a dumbbell shape. After the cutting blade 5 returns to its original position, the motion mechanism sends the tablet to the second sample preparation position to continue cutting. At the same time, the laser position sensor 9 detects the thickness value of the first sample and displays it on the control screen 3. This process continues until the set number of samples is completed. After sample preparation, the equipment automatically resets, and the operator enters the workshop to collect the samples and waste drugs from the equipment.

[0027] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A system for preparing and measuring a test sample for mechanical properties of a cladding, insulation layer, characterized in that, Includes control screen (3), punching cylinder (4), punching blade (5), housing (6), safety door (8), and laser position sensor (9); The bottom surface inside the outer shell (6) is equipped with a servo motor (10), a precision lead screw (11), a precision slide rail (12), a precision slider (13), and a punching platform (14). The top surface is equipped with a punching cylinder (4). The fixed end of the punching cylinder (4) is fixedly connected to the outer shell (6). The telescopic end of the punching cylinder (4) is fixed with a punching knife (5). The laser position sensor (9) is set on one side of the punch (5). When the punch (5) falls, the probe of the laser position sensor (9) contacts the surface of the sample to measure the thickness of the sample. The precision slide rail (12) is fixed to the bottom of the housing (6), the precision slider (13) can slide on the precision slide rail (12), the precision lead screw (11) and the precision slider (13) cooperate with each other, the servo motor (10) is used to drive the precision lead screw (11) to rotate, and the punching platform (14) is fixedly connected to the precision slider (13). The control screen is used to control the electrical actions within the measurement system and to display the sample thickness measured by the laser position sensor (9).

2. The cladding, insulation mechanical property test specimen preparation and measurement system of claim 1, wherein, The punching cylinder (4) has a cylinder diameter of 200mm, a maximum output of 19790N, and a maximum speed of 100mm / s.

3. The cladding, insulation mechanical property test specimen preparation and measurement system of claim 1, wherein, The outer shell is precision machined from 45# steel and the surface is chrome plated.

4. The cladding, insulation mechanical property test specimen preparation and measurement system of claim 1, wherein, The side panels of the outer casing are made of brown acrylic plexiglass.

5. The cladding, insulation mechanical property test specimen preparation and measurement system of claim 1, wherein, The security door is equipped with a safety light curtain and a security access control system.

6. The cladding, insulation mechanical property test specimen preparation and measurement system of claim 1, wherein, The laser position sensor (9) is a contact displacement sensor.

7. The cladding, insulation mechanical property test specimen preparation and measurement system of claim 1, wherein, The safety door is made of explosion-proof acrylic glass.

Images