腾讯分分彩开奖直播专业从事精密钣金加工、激光切割加工为主的钣金加工型厂家

腾讯分分彩开奖直播

示例图片三
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钣金加工料展开注意事项有哪些?

2018-05-25 22:03:52 腾讯分分彩开奖直播 阅读

1.展开方式要合,要便利节省材料及加工性

2.合理选择问隙及包边方式,T=2.0以下问隙0.2,T=2-3问隙0.5,包边方式采用长边包短边(门板类)

3.合理考虑公差外形尺寸:负差走到底,正差走一半;孔形尺寸:正差走到底,负差走一半。

4.毛刺方向

5.抽牙、压铆、撕裂、冲凸点(包),等位置方向,画出剖视图

6.核对材质,板厚,以板厚公差

7.特殊角度,折弯角内半径(一般R=0.5)要试折而定展开

8.有易出错(相似不对称)的地方应重点提示

9.尺寸较多的地方要加放大图

10.需喷涂保护地方须表示

1., the way of expansion should be combined, so as to save materials and workability.

2. reasonable choice of gap and wrapping method, T=2.0 below the gap 0.2, T=2-3 ask gap 0.5, the way of wrapping long edge package short edge (door type)

3. reasonably consider the tolerance dimension: the negative difference goes to the end, the positive error goes half; the hole size: the positive error goes to the end, the negative difference walks half.

4. burr direction

5. draw teeth, press riveting, tearing, bump bump (package), etc. position direction, draw sectional view.

6. check material, plate thickness, plate thickness tolerance

7. special angle, the radius of the bending angle (general R=0.5) should be measured and expanded.

8. where there is error prone (similar asymmetry), we should give priority to hints.

9. places with more size should be added to the big picture

10. the need for spraying protection must be expressed


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