成考院校在线答案
- 2022-09-12 [单选] 40、切削加工时，由于塑性变形，表层金属的强度和硬度都得到了强化，这种现象被称为（ ）
- 2022-09-12 [单选] 40、工件的装夹是指 ( ) 过程的总和。
- 2022-09-12 [判断] 16、在车床上车削细长轴时，容易出现腰鼓形的圆柱度误差。（ ）
- 2022-09-12 [判断] 15、工序能力的高低可用工艺能力系数Cp值的大小来衡量。某工序加工的零件尺寸呈正太分布，且<img alt="image" src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20211005/20211005101351_891.png" width="auto" height="auto" style="max-width:100%">时，则该工序不会出废品
- 2022-09-12 [判断] <p class="MsoNormal" style="margin-left:430.5pt;text-indent:-430.5pt; mso-char-indent-count:-41.0;line-height:20.0pt;mso-line-height-rule:exactly; mso-pagination:widow-orphan;tab-stops:-10.5pt">17、<span style="mso-bidi-font-size: 10.5pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";color:windowtext">在加工过程中，若采用近似的刀具轮廓而造成的加工误差即为原理误差。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;color:windowtext"><span style="mso-spacerun:yes"> </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] 11、磨具的硬度是指组成磨具的磨料的硬度。（ ）
- 2022-09-12 [判断] <p class="MsoNormal" style="line-height:18.0pt;mso-line-height-rule:exactly; mso-pagination:widow-orphan;layout-grid-mode:char">4、<span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; color:windowtext">定位误差是由于夹具定位元件制造不准确所造成的加工误差。</span><span style="color:windowtext"> </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="line-height:20.0pt;mso-line-height-rule:exactly; mso-pagination:widow-orphan;tab-stops:-10.5pt">15、<span style="mso-bidi-font-size: 10.5pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";color:windowtext">选择定位基准时，应遵循“基准重合”原则，以保证加工精度。“基准重合”是指加工过程中尽量选择同一个基准为定位基准。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;color:windowtext"><span style="mso-spacerun:yes"> </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 style="margin:0cm;margin-bottom:.0001pt;line-height:20.0pt;mso-line-height-rule: exactly">12、<span style="font-size:10.5pt;color:windowtext">工件的残余应力一般不会影响加工精度。<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"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p style="margin:0cm;margin-bottom:.0001pt;line-height:20.0pt;mso-line-height-rule: exactly">13、<span style="font-size:10.5pt;color:windowtext">同种磨料制成的各种砂轮，其硬度相同。<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"> <o:p></o:p></span></p>