Thin slice cutting device for pretreatment of hard propellant mechanical performance samples
A cutting device and propellant technology, which is applied in metal processing and other directions, can solve the problems of random test data, uneven test piece size, and uneven linear spacing, so as to reduce human influence factors, controllable test piece size, and improve cutting efficiency. efficiency effect
Active Publication Date: 2015-12-09
XIAN MODERN CHEM RES INST
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Problems solved by technology
At present, when processing thin slices of specified thickness, operators use manual processing, which mainly has the following disadvantages: 1) Manual cutting causes uneven size of the test piece, which often does not meet the test requirements of the national military standard
During the processing of the sample sheet, the distance between the straight lines drawn by hand is not uniform, and the blade and the line are not accurate when observed by the naked eye during cutting. In addition, the billet is easy to shift left and right during the cutting process, etc., all resulting in the thickness of the cut sample sheet. Uneven, often exceeding the deviation specified in the standard, does not meet the test requirements of the national military standard, which is not allowed in the quality control of military products
2) The waste of manual cutting is large and the efficiency is low
The unqualified quality caused by the uneven cutting of the sample thin slices caused the waste of the dose, and caused the test data to be random, discrete, and inaccurate, which increased the human influence factors of the test results
Relying entirely on manual cutting and manual measurement, the efficiency is low, and it is time-consuming and labor-intensive for billets with high hardness
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[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0017] The invention includes a control system, a beryllium copper cutter system and a sample feeding system. The control system mainly includes a control unit 16, a side pressure explosion-proof stepping motor 19, an upper pressure explosion-proof stepping motor 13, an explosion-proof air compressor 14 and a piston rod 12, and is mainly responsible for controlling the upper pressure and side pressure explosion-proof stepping motor 13 , 19 motions and the inflation and deflation process of the explosion-proof air compressor 14. The control unit is located on the side of the beam 15 close to the base bracket 17, the upper pressure explosion-proof stepping motor 13 and the explosion-proof air compressor 14 are located at the end of the beam 15 away from the base bracket 17, and the side pressure explosion-proof stepping motor 19 is loc...
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The invention discloses a hard propellant mechanical property test specimen pretreatment sheet cutting device. The device solves the problems that according to an existing manual cutting technology, the size is hard to control, the parallelism is poor, and the quality difficultly meets the requirement. The device is composed of a control system, a specimen input system and a beryllium copper tool system. Machined propellant sheets are even in thickness, the size meets the test requirement, the test specimen usage is saved, and the device is suitable for machining of propellant sheets with the large hardness
Description
technical field [0001] The invention relates to a chip cutting device, which belongs to the field of propellant testing. Background technique [0002] Mechanical properties are one of the important properties of propellants, which are related to the safety of solid rocket motors and the storage life of the motors. At present, there are corresponding standard methods, such as GJB770B-2005 methods 413.1-413.4 and 414.1. The test method is mainly to process the propellant billet into a sample of specified size, and obtain the mechanical properties of the propellant under specific conditions by applying a constant stress or strain or stress change rate on the material testing machine, such as the maximum resistance Tensile strength, breaking strength, maximum elongation and elongation at break. The sample processing first needs to process the prepared propellant billet into a uniform sheet with a certain thickness (thickness deviation ±0.5mm), and then process it into the shape...
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IPC IPC(8): B26D1/08B26D7/06
Inventor 丁黎王琼胡岚刘志伟安静张冬梅张丽涵
Owner XIAN MODERN CHEM RES INST