濟南彩鋼瓦c型鋼結構需機加工的鋼構件應重視在未加工前桿件的質量，操作者必須堅持做好以下工作。

Jinan color steel tile C steel structure needs to be machined steel members should pay attention to the quality of the bar before machining, the operator must adhere to the following work.

一、在鋼結構桿件未加工前，巡查需機加工桿件的平、直和扭曲變形是否在標準要求范圍之內，超標變形件應拒收。操作者不可只顧埋頭加工而忽視了機加工件本身存在變形超標的問題。

1、 Before the steel structure member is machined, inspect whether the flat, straight and twisted deformation of the bar to be machined is within the standard requirements, and the parts with excessive deformation shall be rejected. The operator should not only pay attention to the machining and ignore the problem of excessive deformation of machined parts.

鋼結構加工件本身存在不平、不直和扭曲超標變形，會致使加工銑、刨的面不能使用。因此，必須堅持做好在未加工前對機加工件的質量復核（審查核對)工作。

The uneven, non straight and distorted deformation of steel structure processing parts will cause the milling and planed surface can not be used. Therefore, we must adhere to the quality review (review and check) of machined parts before machining.

二、機加工工件加工基準線的確定，上道工序已規定機加工的基準線（已沖樣沖印），應與上道工序取得確切加工總長度尺寸，然后操作者親自復核（審查核對)，認可基準線與基準線之間總長度尺寸后，進行加工，如上道工序只告知機加工工序經機加工工序經機加工后的總長度尺寸，操作者應自求基準線，操作者應由加工件毛坯總長度中間部位往加工件兩端部量所需尺寸求得機加工基準線。不允許以毛坯加工件毛面為依據量機加工基準線，因毛坯加工件的毛面凸凹不平，無法依此確定任何邊、面。

2、 For the determination of machining datum line of machining workpiece, the datum line of machining has been specified in the previous process (the sample has been punched and printed), and the exact total processing length size shall be obtained from the previous process, and then the operator shall personally review (check) and confirm the total length between the reference line and the reference line before processing. The above process only tells the machining process that the machining process has been machined The operator should calculate the datum line by himself for the total length after construction. The operator should measure the required size from the middle part of the total length of the workpiece to the two ends of the workpiece to obtain the machining reference line. It is not allowed to measure the machining datum line based on the rough surface of the blank workpiece, because the rough surface of the blank processing part is uneven, it is impossible to determine any edge or surface according to this.

三、鋼結構機加工前，首先將加工件就位于機加工胎架上并緊靠胎架定位靠件與機加工刀面成90度，確認無誤后采用工夾具將加工件與機加工胎架夾緊固定。

3、 Before machining the steel structure, first place the workpiece on the machining jig frame and position it close to the jig frame. The backup part and the machined tool surface should be at 90 degrees. After confirming that there is no error, the fixture is used to clamp and fix the workpiece and the machining jig frame.

四、啟動加工時必須注意，操作者及周圍安全防護工作做到位，當機刀切削受力時應巡查已固定的加工件是否有異常，發現問題及時解決，機刀進刀量不宜過多，必須按機加工標準操作，否則經機加工后的端面精度（度）達不到標準要求。

4、 When starting machining, the operator and the surrounding safety protection work should be in place. When the machine tool is under cutting force, it is necessary to inspect whether the fixed processing parts are abnormal. If the problems are found, they should be solved in time. The feed amount of the machine tool should not be too much. It must be operated according to the machining standard, otherwise the end face precision (degree) after machining can not meet the standard requirements.