我厂系190系列大功率柴油机生产厂,为提高铸件质量,改善劳动环境,提高生产效率于1988年引进西德 Klein 公司冷凝树脂砂成套设备14台套,投资98万马克,并配套国产设备12台套,自制设备7台套,总投资374万元于1988年8月10日完成安装调试工作...我厂系190系列大功率柴油机生产厂,为提高铸件质量,改善劳动环境,提高生产效率于1988年引进西德 Klein 公司冷凝树脂砂成套设备14台套,投资98万马克,并配套国产设备12台套,自制设备7台套,总投资374万元于1988年8月10日完成安装调试工作,同年9月正式投入生产。该线使用三年多的时间收到明显效果,铸件质量有了明显提高,特别是机身。展开更多
The selected modifications to the construction of grinding wheels were described which facilitate an increase in the material removal rate （grinding wheels with conic chamfer and grinding wheels with microdiscontinui...The selected modifications to the construction of grinding wheels were described which facilitate an increase in the material removal rate （grinding wheels with conic chamfer and grinding wheels with microdiscontinuities on the active surface）. Using these background details, a suggested thesis was put forward regarding the need to develop a device which will allow for the shaping of the macrogeometry of the grinding wheel （cylindrical and conical surfaces） and the microdiscontinuities within the dressing operation simultaneously. The device was presented and prepared in two functional variants （horizontal and vertical mounting of the motor）, then a prototype was described. An example of the grinding wheel active surface, shaped by using this device, was also presented. The theoretical analysis and experimental verification performed determine that the error of shaping the conic chamfer angle within the range of 0-1.5°, using the developed device, is approximately ±3%.展开更多
文摘我厂系190系列大功率柴油机生产厂,为提高铸件质量,改善劳动环境,提高生产效率于1988年引进西德 Klein 公司冷凝树脂砂成套设备14台套,投资98万马克,并配套国产设备12台套,自制设备7台套,总投资374万元于1988年8月10日完成安装调试工作,同年9月正式投入生产。该线使用三年多的时间收到明显效果,铸件质量有了明显提高,特别是机身。
文摘The selected modifications to the construction of grinding wheels were described which facilitate an increase in the material removal rate （grinding wheels with conic chamfer and grinding wheels with microdiscontinuities on the active surface）. Using these background details, a suggested thesis was put forward regarding the need to develop a device which will allow for the shaping of the macrogeometry of the grinding wheel （cylindrical and conical surfaces） and the microdiscontinuities within the dressing operation simultaneously. The device was presented and prepared in two functional variants （horizontal and vertical mounting of the motor）, then a prototype was described. An example of the grinding wheel active surface, shaped by using this device, was also presented. The theoretical analysis and experimental verification performed determine that the error of shaping the conic chamfer angle within the range of 0-1.5°, using the developed device, is approximately ±3%.
