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A processing method for adjusting the cutting of sheet ceramic matrix composite materials
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A technology of composite materials and processing methods, applied in metal processing equipment, manufacturing tools, welding equipment, etc., can solve the problems of high cost, low efficiency, and inability to ensure that the processed surface is free of defects, etc., and achieve low roughness and low-cost mass production Effect
Active Publication Date: 2019-04-23
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology
This method adopts femtosecond laser cutting, which solves the problems of low efficiency, high cost, difficult cutting of ceramic matrix composite materials and the inability to ensure that the processed surface is free of defects in traditional processing methods.
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Embodiment 1
[0048] A processing method for adjusting the cutting of sheet ceramic matrix composite materials, comprising the following steps:
[0049] Step 1, workpiece preprocessing
[0050]In Table 2, place the workpiece of the adjusted sheet ceramic matrix composite material with serial number 1 in an ultrasonic cleaning machine, and the cleaning liquid is a mixture of alcohol and water, wherein, according to the volume ratio, alcohol: water = 1:10, ultrasonic cleaning 10-15min, use an air gun to dry to obtain the pretreated workpiece;
[0051] In the above step 1, the adjusting sheet-type ceramic matrix composite material specifically refers to an aero-engine tail nozzle adjusting sheet made of CMC-SiC material.
[0052] Step 2, workpiece positioning and installation
[0053] (1) Microdrill 100 femtosecond processing machine tool is used, and the pretreated workpiece is clamped and fixed on the mounting seat of the machine tool with tooling; the clamp should be clamped by clamping a...
Embodiment 2
[0062] A processing method for adjusting the cutting of sheet ceramic matrix composite materials, comprising the following steps:
[0063] Step 1, workpiece preprocessing
[0064] In Table 2, place the workpiece of the adjusted sheet ceramic matrix composite material with serial number 2 in an ultrasonic cleaning machine, and the cleaning liquid is a mixture of alcohol and water, wherein, according to the volume ratio, alcohol: water = 1:5, ultrasonic cleaning 15min, adopt air gun to dry, obtain the workpiece after pretreatment;
[0065] In the above step 1, the adjusting sheet-type ceramic matrix composite material specifically refers to an aero-engine tail nozzle adjusting sheet made of CMC-SiC material.
[0066] Step 2, workpiece positioning and installation
[0067] (1) Microdrill 100 femtosecond processing machine tool is used, and the pretreated workpiece is clamped and fixed on the mounting seat of the machine tool with tooling; the clamp should be clamped by clamping...
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Abstract
The invention discloses a machining method for cutting an adjustment sheet type ceramic based composite material and belongs to the technical field of cuttingmachining of a jet nozzle adjustment sheet of an aero-engine. The method comprises the following steps: washing a work piece made from the adjustment sheet type ceramic based composite material and drying in an air blowing way; clamping andfixing by adopting a femtosecondmachine tool and positioning by using a distance measuring sensor and a CCD paraxial detection system which are arranged on the femtosecondmachine tool; starting a dust collecting device; performing primary cuttingmachining by using a femtosecondlaser machining head part; and performing secondary cutting machining by using a femtosecond laserscanner part to obtain a cut adjustment sheet type ceramic based composite material. By adopting femtosecond laser cutting, the method provided by the invention solves the problems that a traditional machining method islow in efficiency and high in cost, has a difficulty in cutting of a ceramic based composite material and cannot guarantee that the machined surface has no defects. By adopting the method for machining, the efficiency is high, the cost is low and lots of cutter consumption is reduced.
Description
technical field [0001] The invention relates to the technical field of cutting and processing of an aero-engine tailnozzle regulating plate, in particular to a processing method for cutting a regulating plate-like ceramic matrix composite material. Background technique [0002] Aeroengine tail nozzles are divided into adjustable and non-adjustable types according to the nozzle area. In order to make the engine achieve good performance under various working conditions, the engine with afterburner must use an adjustable tail nozzle. By changing The nozzle area can be used to change the working conditions. The main types are: multi-adjustment plate type, double-adjustment plate type, moving tail cone type and pneumatic adjustment type. The material used for traditional regulators is titaniumalloy, and some regulators will be completely broken after service. Nowadays, ceramic matrix composite materials have become the main material of regulators, but due to the special require...
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Application Information
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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/402B23K26/16B23K26/60B23K26/70
CPCB23K26/16B23K26/402B23K26/60B23K26/702
Inventor 赵晨曦张军桓恒高宇李伟剑
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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