Suzhou Zhonggu Industrial Co., Ltd. was founded in 2002, is located in Suzhou Xiangcheng District Chengyang Road 888, covers an area of 18000 square meters, is a research and development, manufacturing, sales as one of the high-tech enterprises. The company has a complete quality management system. The company is committed to high-frequency pulse power supply, numerical control system, electrical discharge processing technology research and development investment, the design and precision manufacturing capabilities of Guosheng Zhike, in the electrical discharge machining machinery manufacturing precision and innovation ability in the industry leading position.
Customer pain point：
Solution & Value：
In view of the current processing situation of turbine blade gas film holes, the team of Suzhou Qianzhineng Technology Co., Ltd. proposed an adaptive processing scheme based on in-machine measurement and error compensation technology. The precision reference position of the fixture after clamping was measured by the probe on the machine tool, and then the specific position of the blade relative to the fixture was measured, so as to determine the position error of the blade. QJCAM.FIT adaptive software is used to automatically modify the machining tool path program or the specific machining coordinate system to ensure the position of the gas film hole.
CAM features automatic programming tool path
CAM software has a feature programming module to assist blade gas film hole programming, which can automatically extract the features of blade gas film holes and group them according to type. After programming one hole in a group, the tool path of other holes in the same group can be automatically generated. Improve programming efficiency while reducing the risk of errors.
QJCAM.FIT Fixture positioning accurate measurement
Because the turbine blade does not have a reference position for positioning, the turbine blade and the fixture are taken as a whole part, and a reference coordinate system, that is, the processing coordinate system, is formulated on the fixture to ensure that the entire blade position is limited by this coordinate system. Using the UltraFIT fast clamping module, the error of the actual clamping position and the theoretical clamping position measurement can be fed back into the software to ensure that the subsequent profile measurement position is accurately defined.
QJCAM.FIT turbine blade profile measurement in machine
Due to the manufacturing deviation of cast turbine blades and the errors generated during clamping, the position of EDM holes is inconsistent with the actual position of blades. In order to ensure the relative position of gas film holes and blade body, the margin optimization module in QJCAM.FIT is used to plan several measurement points on the blade body after positioning adjustment based on the fast clamping reference. The deviation between the theoretical blade position and the actual blade position is calculated by the adaptive software to offset the hole position.
QJCAM.FIT ADAPTS to each row of tool paths
After the above quick clamping and margin optimization superposition error adjustment, the theoretical tool path of the blade air film hole punching cannot be self-adapted to a single conversion, which is easy to have errors in the axial position of the same row of holes, resulting in different hole diameters. Therefore, the whole row of hole tool path is converted to complete the processing.
