T180推土機(jī)平衡梁裝--焊工藝及總裝配胎架的設(shè)計(jì)

摘   要
首先根據(jù)推土機(jī)平衡梁的具體結(jié)構(gòu)進(jìn)行裝-焊工藝的設(shè)計(jì)，在進(jìn)行焊接裝配采用整裝整焊的方法,工件裝配采用軸定位、活動(dòng)支撐、夾緊器、擋鐵定位和連桿定位的方法進(jìn)行工件的定位。焊接時(shí)應(yīng)采取合理的焊接工藝，選擇的焊接參數(shù)必須要保證焊后焊縫不出現(xiàn)缺陷或所產(chǎn)生的缺陷在允許的范圍內(nèi)。拼焊采用焊條電弧焊進(jìn)行焊接，正式焊接采用CO2氣體保護(hù)焊進(jìn)行焊接。焊后應(yīng)進(jìn)行及時(shí)的整修，以確保產(chǎn)品的合格率，避免產(chǎn)生工件的報(bào)廢，造成不必要的損失。根據(jù)平衡梁的裝-焊工藝進(jìn)行總裝配胎架的設(shè)計(jì)，平衡梁是批量生產(chǎn)要求裝配胎架在裝焊時(shí)工件方便裝卸，減少工人的裝配時(shí)間，減輕工人的工作量。所設(shè)計(jì)的總裝配胎架在確保工件生產(chǎn)時(shí)要求精度的前提下，減少工時(shí)，降低產(chǎn)品成本以保證產(chǎn)品的經(jīng)濟(jì)利潤(rùn)，這是要求所設(shè)計(jì)的T180推土機(jī)平衡梁總裝配胎架的基本理念。

關(guān)鍵詞：焊接工裝   焊接參數(shù)   焊接工藝

T180 Bulldozer balance beam assembly - welding process and assembly jig design
Abstract
  According to the specific structure of the balance beam of the bulldozer left - welding process design, in the welding assembly with integral assembly and welding method, workpiece assembly using axis positioning, clamping device, movable supporting, positioning and retaining iron connecting rod positioning method for workpiece positioning. Welding should take reasonable welding process, the welding parameters selection must guarantee the welding seam after welding is not defective or defects arising in the allowed range. Welding arc welding with welding rods for welding, formal welding using CO2 gas shielded arc welding welding. Welding shall be carried out after the timely repair, to ensure that the qualified rate of the products, to avoid the scrapped workpiece, causing unnecessary losses. Based on the balance beam. - welding process general assembly jig design, balance beam is the requirements of batch production assembly jig in the welding workpiece to facilitate loading and unloading, reduces the assembly time, reduce the workload of workers. The design of the general assembly jig in securing a workpiece production requirements of precision, reduce time, reduce product cost to ensure that the products of economic profit, it is required to design a T180 bulldozer balance beam assembly jig basic concept.

Key words: Welding fixture ，Welding parameters，welding proces

目 錄

緒論-------------------------------------------------------------------------------------------  5
一、產(chǎn)品的組成和分析----------------------------------------------5
二、產(chǎn)品裝焊工藝工序的劃分----------------------------------------6
三、焊接方法的選擇------------------------------------------------6
1、手工電弧焊------------------------------------------------- 6
2、熔化極活性氣體保護(hù)焊--------------------------------------- 7
3、 焊接參數(shù)的選擇--------------------------------------------11
四、裝配焊接順序的確定
1、一次拼焊--------------------------------------------------12
2、一次焊接--------------------------------------------------13
3、一次整修--------------------------------------------------14
4、二次拼焊--------------------------------------------------15
5、二次焊接---------------------------------------------------------------------------16
6、二次整修---------------------------------------------------------------------------17
五、胎架部分----------------------------------------------------18
1胎架的特點(diǎn)及要求-------------------------------------------18
2胎架設(shè)計(jì)方案-----------------------------------------------18
六、產(chǎn)品的檢驗(yàn)--------------------------------------------------19
七、畢業(yè)設(shè)計(jì)的體會(huì)與心得----------------------------------------20
八、參考文獻(xiàn)----------------------------------------------------21

九、教師評(píng)語(yǔ)與成績(jī)----------------------------------------------22