20春学期《特种加工技术》在线平时作业3

adminhan

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">D7132代表电火花成型机床工作台的宽度是</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">(</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">)</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">。</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
A:32mm
B:320mm
C:3200mm
D:32000&nbsp;mm

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">在线切割加工中，当穿丝孔靠近装夹位置时，开始切割时电极丝的走向应（&nbsp;）。</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
A:沿离开夹具的方向进行加工
B:沿与夹具平行的方向进行加工
C:沿离开夹具的方向或与夹具平行的方向进行加工
D:无特殊要求

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">&nbsp;</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">电解加工(&nbsp;&nbsp;&nbsp; </span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">)_。</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p><p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p><!--EndFragment-->
A:<span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">生产效率较低</span>
B:<span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">表面质量较差</span>
C:<span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">精度不太高</span>
D:<span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">工具电极损耗大</span>

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">在慢走丝线切割加工中，常用的工作液为（&nbsp; </span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">&nbsp;）</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
A:乳化液
B:机油
C:去离子水
D:柴油

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">13、电火花加工中的等脉冲电源，它具有（&nbsp;&nbsp; &nbsp;）</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
A:控制每个脉冲周期内加于电极两端的脉冲时间宽度相等
B:控制每个脉冲周期内加于电极两端的脉冲电流幅值相同；<span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span>
C:控制每个脉冲周期内加于电极两端的脉冲电压、电流幅值相同
D:控制每个脉冲周期内用于加工的脉冲能量值相同

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">(</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">)</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">加工方法是电火花加工。</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
A:电解加工
B:成型加工
C:超声加工
D:电弧加工

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">(</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">&nbsp;&nbsp;</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; TEXT-DECORATION: underline; mso-spacerun: 'yes'">&nbsp;</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">)</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">&nbsp;是加到电极和工件上放电间隙两端的电压脉冲的持续时间。</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p><p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"></span></p><!--EndFragment-->
A:放电间隙
B:脉冲周期
C:脉冲间隔
D:脉冲宽度

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">下列各项中对电火花加工精度影响最小的是</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">(</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">)</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">。</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
A:放电间隙
B:加工斜度
C:工具电极损耗
D:工具电极直径

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">&nbsp;</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">两种不同的金属放入任何导电的水溶液中，在电场作用下阳极表面失去电子（氧化作用）产生阳极溶解、蚀除，俗称</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">（&nbsp; ）</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">；</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
A:<span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">电解</span>
B:<span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">电镀</span>
C:电离
D:电涂覆

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">电火花成型加工的符号是</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">(</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">)</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">。</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
A:EDM&nbsp;
B:WEDM
C:ECDM
D:ECAM

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">影响激光打孔的主要因素有（&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ）</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p><p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p><!--EndFragment-->
A:输出功率
B:照射时间
C:焦距
D:发散角
E:焦点位置
F:光斑内能量分布
G:照射次数
H:工件材料

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: justify"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">超高压水射流加工设备中的喷嘴，所采用的材料常用的有（&nbsp;&nbsp;&nbsp; <font face="Times New Roman">&nbsp;&nbsp;</font><font face="宋体">）。</font></span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
A:<font face="宋体">硬质合金</font>
B:<font face="宋体">蓝宝石</font>
C:<font face="宋体">红宝石</font>
D:<font face="宋体">玻璃</font>
E:<font face="宋体">金刚石</font>

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">目前常用的电极材料有（&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ）等。</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
A:紫铜
B:黄铜
C:钢
D:石墨
E:铸铁
F:银钨合金
G:铜钨合金

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: justify"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">超高压水射流加工的工作参数主要包括<font face="Times New Roman">(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;)</font><font face="宋体">。</font></span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
A:<font face="宋体">流速与流量</font>
B:<font face="宋体">水压</font>
C:<font face="宋体">能量密度</font>
D:<font face="宋体">喷射距离</font>
E:<font face="宋体">喷射角度</font>
F:<font face="宋体">喷嘴直径</font>

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">影响超声波加工精度因素</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">有（&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;）。</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
A:<span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">机床精度</span>
B:<span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">夹具精度</span>
C:<span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">磨料粒度</span>
D:<span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">工具精度</span>
E:<span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">被加工材料性质</span>

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">化学铣削加工适宜加工窄而深的槽和型孔。（&nbsp; ）</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-STYLE: normal; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p><!--EndFragment-->
A:错误
B:正确

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">电火花线切割加工可以用来制造成形电极。（</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">&nbsp;）</span></p><!--EndFragment-->
A:错误
B:正确

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">在电火花线切割加工过程中，可以不使用工作液。（</span><span style="FONT-WEIGHT: normal; FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">&nbsp;）</span></p><!--EndFragment-->
A:错误
B:正确

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'; mso-spacerun: 'yes'">电子束打孔已实际应用在喷气发动机套上的冷却孔</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">的加工中（ <font face="宋体">）</font></span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'; mso-spacerun: 'yes'"><o:p></o:p></span></p><!--EndFragment-->
A:错误
B:正确

<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: justify"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">超高压水射流加工设备中增压器可以使液体的工作压力达到<font face="Times New Roman">100</font><font face="宋体">～</font><font face="Times New Roman">400MPa</font><font face="宋体">。（&nbsp; </font><font face="宋体">）</font></span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p><!--EndFragment-->
A:错误
B:正确