Processing method of cross cutter with cutting edge
A processing method and cutting knife technology, applied in the direction of manufacturing tools, other manufacturing equipment/tools, etc., can solve the problems of blade ablation, overcutting of the transition between the blade and the tip of the blade, and blade chipping, etc., so as to improve the surface quality and avoid The effect of cutter deformation
Active Publication Date: 2019-04-16
XIAN SPACE ENGINE CO LTD
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Problems solved by technology
[0003] In order to overcome the deficiencies of the prior art, the present invention provides a processing method of a cross cutting knife with a knife tip, which solves the problem of large blade width, chipping of the blade, overcutting of the transition between the blade and the tip, and ablation of the blade. It leads to problems such as strength reduction, effectively realizes the processing of the cutter that meets the design requirements, and improves the processing quality of the cutter
Method used
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specific Embodiment approach
[0030] The specific embodiment of the present invention comprises the following steps:
[0031] (1) According to the designed cutting knife processing method (see figure 2 ), using a precision CNC lathe to turn the tip, blade angle and outer circle shape; use a wire cutting machine to clamp the largest outer circle and cut four ribs.
[0032] (2) Adjust the grinding angle of the universal vise according to the angle requirements of the blade, and grind the blade with a bowl-shaped grinding wheel and a disc-shaped grinding wheel to avoid grinding interference. After the online cutting process completes the semi-finished product of the cutting knife, the cutting edge is ground. Using a bowl-shaped grinding wheel, adjust the angle of the universal vise to be horizontally 14°31' and vertically inclined 3°51' for grinding; during grinding, there are two processes: rough grinding and fine grinding, and a margin of 0.15mm is left for fine grinding to prevent one-time grinding The ...
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Abstract
The invention provides a machining method of a cross cutter with a cutter nose. The machining process method with turning, line cutting and grinding as main steps is designed, the cutter nose and blade angle features are machined in a turned manner, through the line cutting, the cross cutter semi-finished product is machined, four blades are machined through grinding, the grinding angle of a universal vise is adjusted, a bowl-shaped grinding wheel and a disc-shaped grinding wheel are used for grinding the lades, and grinding interference is avoided. A dedicated grinding blade tool is designed;a universal tool microscope is adopted to detect the blade size and states, and product machining quality is ensured. Machining of the cutter meeting the design requirement is achieved, the machininginterference between the cutter blades and the cutter nose can be effectively avoided, and the machining quality of the cutter is improved.
Description
technical field [0001] The invention relates to a processing method of a cutter, in particular to a processing method of a cross cutter with a knife tip for a diaphragm electric explosion valve in a liquid rocket engine. Background technique [0002] The cross cutter with knife tip is the key part of the diaphragm electric explosion valve in the liquid rocket engine. Its main function is to open the flow channel when the engine starts. The specific principle is: when the diaphragm electric explosion valve receives the electric explosion command, it will Under the action of the high-voltage electric explosion gas generated by the explosion of the electric detonator, the tip of the cross cutter pierces the diaphragm first, and then the four blades cut the diaphragm along the punctured part, and the cutter continues to move forward, cutting the cut 4 The valve sheet squeezes against the inner wall, opens the flow channel, and realizes the communication between the inlet and the...
Claims
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IPC IPC(8): B24B3/36
CPCB24B3/36
Inventor 仵亮袁晓东赵飞李波周伟张伟松马瑞利
Owner XIAN SPACE ENGINE CO LTD