成考院校在线答案
- 2022-09-12 [判断] <p class="MsoNormal" style="text-indent:24.1pt">18、<span style="font-size:12.0pt; font-family:华文中宋;color:windowtext">机床主轴前轴承的精度选择可比后轴承低一级。<span lang="EN-US"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span>（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）<b style="mso-bidi-font-weight:normal"><span lang="EN-US"> <o:p></o:p></span></b></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">11、<span style="font-size:12.0pt;font-family:华文中宋;color:windowtext">机床总体布局的首要工作是分配机床运动。 <span lang="EN-US"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span>（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;color:windowtext;mso-font-kerning: 0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">21、<span style="font-size:12.0pt;font-family:华文中宋;color:windowtext">被加工零件工序图重点反映本工序加工内容及装夹方案。<span lang="EN-US"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span>（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;color:windowtext;mso-font-kerning: 0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">8、<span style="font-size:12.0pt;font-family:华文中宋;color:windowtext">铸铁材料的抗弯刚度高，常作为机床支承件的首选材料。 <span lang="EN-US"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span>（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;color:windowtext;mso-font-kerning: 0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">29、<span style="font-size:12.0pt;font-family:华文中宋;color:windowtext">为了便于维修，多轴箱的油泵齿轮最好布置在中间排。<span lang="EN-US"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span>（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;color:windowtext;mso-font-kerning: 0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">19、<span style="font-size:12.0pt;font-family:华文中宋;color:windowtext">钻扩复合刀具的进给量按钻头选择，切削速度按扩孔钻选择。<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>（<span lang="EN-US"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span>）</span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">30、<span style="font-size:12.0pt;font-family:华文中宋;color:windowtext">钻孔多轴箱主轴的前、后支承均采用圆锥滚子轴承 <span lang="EN-US"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span>（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;color:windowtext;mso-font-kerning: 0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">29、<span style="font-size:12.0pt;font-family:华文中宋;color:windowtext">圆孔拉刀的粗切齿采用分块式结构便于提高拉削效率。<span lang="EN-US"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span>（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;color:windowtext;mso-font-kerning: 0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">22、<span style="font-size:12.0pt;font-family:华文中宋;color:windowtext">拉刀切削速度低，切削厚度薄，切削平稳而加工精度高。<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;color:windowtext;mso-font-kerning: 0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">34、<span style="font-size:12.0pt;font-family:华文中宋;color:windowtext">主轴转速高且承受较大轴向和径向载荷采用角接触球轴承。 <span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;color:windowtext;mso-font-kerning: 0pt"> <o:p></o:p></span></p>