A 3D printed air turbine shell abrasive flow finishing device
An air turbine and 3D printing technology, which is applied in metal processing equipment, grinding workpiece supports, grinding/polishing equipment, etc., can solve the problem that the space flow channel is narrow and the surface quality of metal parts cannot meet the requirements of direct use. 3D printing Problems such as the complex structure of the air turbine shell can avoid uneven processing and asynchronous processing.
Active Publication Date: 2019-12-24
XIAN SPACE ENGINE CO LTD
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Problems solved by technology
[0003] 3D printing is an emerging technical field of overall parts and rapid prototyping. The surface quality of the formed metal parts cannot meet the requirements for direct use. Moreover, the structure of the 3D printed air turbine shell is complex, and the space flow channel is narrow. The tools are polished by manual grinding. No access to the inside of the housing for grinding
The conventional finishing methods such as sand blowing and shot blasting achieve the finishing effect through the impact of particles such as corundum sand and steel shots in the compressed air to achieve the finishing effect on the surface of the part, but the inside of the shell is a 90° right-angle flow channel, and the lower blade Stacking, unable to achieve effective finishing of all flow channels inside the shell
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[0024] The outline of the lower cover plate 9 is a circular ring with an inner diameter of 270 mm and an inner diameter of 90 mm. , the lower blocking block 6 is a ring with a hole in the middle, and the air turbine housing is worn with a screw rod, and is tightened and fixed with a nut to block the through hole in the center of the part; the air turbine housing parts are placed on the half ring blocking cover 7 and the semicircle 8 Above, adjust the position of the part relative to the semi-ring blocking cover during processing; the outline of the fixed block 3 is a ring, and a 90° opening is opened in the circumferential direction, and the function is to insert the air turbine housing part and expose the side flange of the part The inlet is inserted into the air turbine casing and pressed on the outer "ear" of the lower part of the part; the support sleeve 5 is placed on the lower cover plate and matched with it; the drainage ring 2 is an L-shaped rotary body, and a 90° openi...
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The invention discloses a 3D printing air turbine housing abrasive particle streamlining device, which includes an upper cover plate, a drainage ring, a fixed block, an upper block, a support sleeve, a lower block, a half-ring block cover, a semicircle body and a lower block. The cover plate and the turbine casing, the lower cover plate is a circular body with sunken steps on the inner and outer diameters, the half-ring blocking cover and the semicircular body are placed on the sunken steps of the inner diameter of the lower cover plate, and the support sleeve is a hollow rotary body, which is placed on the sunken step of the outer diameter of the lower cover plate, the fixed block is a hollow rotary structure with a 90° opening in the circumferential direction, and the outer wall of the fixed block is placed on the lower cover plate along the inner wall of the support sleeve. Each part of the present invention realizes the abrasive particle flow processing of the turbine casing through the cooperation of its own structure, and completes the surface finishing of the closed impeller; The pressure can realize the stillness of the parts during processing, so as to avoid uneven processing caused by displacement.
Description
technical field [0001] The invention relates to a 3D printing air turbine casing abrasive flow finishing device, which is used for finishing the surface of the inner flow channel of the air turbine casing, and belongs to the field of surface finishing of 3D printing metal parts. Background technique [0002] As a key part of the liquid rocket engine, the air turbine shell has a complex internal structure. It is brazed after separate machining. There are many processing procedures and a long processing cycle. 3D printing technology has realized the overall rapid prototyping and research of the air turbine shell. verify. [0003] 3D printing is an emerging technical field of overall parts and rapid prototyping. The surface quality of the formed metal parts cannot meet the requirements for direct use. Moreover, the structure of the 3D printed air turbine shell is complex, and the space flow channel is narrow. The tools are polished by manual grinding. No access to the inside o...
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IPC IPC(8): B24B31/116B24B41/06
CPCB24B31/116B24B41/06
Inventor 马双民杨欢庆陈振宇王琳彭东剑宋梦华王云
Owner XIAN SPACE ENGINE CO LTD