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苏州第三光学仪器厂新开发的DK7725f型电火花线切割机于1988年4月底通过鉴定。DK7725f电火花线切割机是在获国家银质奖的DK7725d基型上,为适应大厚度模具加工的需要,经过改进设计的高精度机床。机床线架跨距在50～150毫米之间可任意调节;采用花岗石台面,精度保持性好。与会代表现场实测,加工精度、加工生产率、光洁度等项指标,均超过设计指标,并有一定储备量。由于该机床适应性广,精度保持性好,
Suzhou Third Optical Instrument Factory newly developed DK7725f WEDM by the end of April 1988 passed the appraisal. DK7725f WEDM is won in the national silver medal DK7725d base type, in order to meet the needs of large-thickness die processing, improved design of high-precision machine tools. The span of the machine tool frame can be adjusted between 50 ~ 150mm freely. The granite countertops are used to keep the precision. Participants on-site measurement, processing accuracy, processing productivity, finish and other indicators are beyond the design indicators, and have a certain amount of reserves. Due to the wide adaptability of the machine, the accuracy of maintaining good,