Projeto de Matriz de Ferramentas Abrasivas CBN Galvanizadas
Deixe um recado
Projeto de Matriz de Ferramentas Abrasivas CBN Galvanizadas
High precision narrow and deep grooves have always been a challenge in mechanical processing. Previously, narrow and deep grooves with a width of>2 mm em peças de material comum eram geralmente pré-fresadas com uma fresa de entalhe, tratadas termicamente e depois retificadas com uma resina mais fina ou um rebolo de liga cerâmica. Este processo tem baixa eficiência de usinagem, baixa resistência do rebolo, baixa rigidez e vida útil curta, dificultando a obtenção de alta precisão de usinagem. Usando o processo de retificação de alimentação lenta do rebolo comum, sulcos estreitos e profundos de alta precisão podem ser usinados após um tratamento térmico de retificação da peça de trabalho. Para canais estreitos e profundos com largura de<2mm, milling processing has high cost and low accuracy; When using ordinary grinding wheels for slow feed grinding, the thickness of the working area of the grinding wheel is very thin, and the amount of dressing is large. It is easy to break during grinding and dressing, and the processing cost is high. In recent years, electroplated superhard abrasive wheels have been widely used for high-precision slot slow feed grinding. Electroplated CBN grinding wheels have been used abroad to slowly feed grind narrow and deep grooves with a width of 1.52mm, a depth of 6.35mm, and a radius of 0.38mm on 4340 steel parts with a hardness of HRC42. Electroplated CBN grinding wheels are also used domestically to slowly feed and grind narrow and deep grooves with a width of 1.5mm on ordinary steel. Many aviation parts made of difficult to machine materials have various high-precision grooves, especially the machining of high-precision tooth grooves and narrow and deep straight grooves at the root of aircraft turbine blades, which has always been a difficulty in blade machining in China. This article will introduce the design of the grinding tool matrix for slow feed grinding of narrow and deep grooves with electroplated CBN grinding wheels.
www.superbheater.com
