问题
问答题 简答题
影响模具精度的主要因素有哪些？零件表面质量对零件使用性能有何影响？
答案
参考答案：
因素：
①制件的精度
②模具加工技术手段的水平
③模具装配钳工的技术水平
④模具制造方式和管理水平
影响：
①零件表面质量对零件耐磨性有影响
②零件表面质量对零件疲劳强度有影响
③零件表面质量对零件耐腐蚀性有影响
④零件的表面质量对配合性质及其他方面有影响
搜题请搜索小程序“爱下问搜题”
影响模具精度的主要因素有哪些？零件表面质量对零件使用性能有何影响？
参考答案：
因素：
①制件的精度
②模具加工技术手段的水平
③模具装配钳工的技术水平
④模具制造方式和管理水平
影响：
①零件表面质量对零件耐磨性有影响
②零件表面质量对零件疲劳强度有影响
③零件表面质量对零件耐腐蚀性有影响
④零件的表面质量对配合性质及其他方面有影响
I went to a group activity, “Sensitivity Sunday”, which was to make us more the problems faced by disabled people. We were asked to “ a disability” for several hours one Sunday. Some members, , chose to use wheelchairs. Others wore sound—blocking earplugs(耳塞) or blindfolds(眼罩). Just sitting in the wheelchair was a experience. I had never considered before how it would be to use one. As soon as I sat down, my made the chair begin to roll. Its wheels were not . Then I wondered where to put my . It took me quite a while to get the metal footrest(脚凳) into . I took my first uneasy look at what was to be my only means of for several hours. For disabled people, “adopting a wheelchair” is not a temporary . I tried to find a position and thought it might be restful, kind of nice, to be around for a while. Looking around, I I would have to handle the thing myself! My hands started to ache as I the heavy metal wheels. I came to know that controlling the of the wheelchair was not going to be a(n) task. My wheelchair experiment was soon . It made a deep impression on me. A few hours of “disability” gave me only a taste of the , both physical and mental, that disabled people must overcome.
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