Welding positioner is a kind of welding positioner which can rotate and tilt the weldment to make the weld on the weldment in a favorable welding position. Welding positioner is mainly used for turnover positioner of non long weldment such as frame, base, flange and head. According to the basic structural form of welding positioner, there are three types: outrigger type, seat type and double seat type.

1、伸臂式變位機的性能特點與使用范圍

1. Performance characteristics and application range of outrigger positioner

回轉(zhuǎn)工作臺按裝在伸臂的一端，伸臂相對于某一傾斜軸成角度回轉(zhuǎn)，而此傾斜軸的位置多是固定，但有的也可小于100度的范圍內(nèi)上下傾斜。

The rotary table is installed at one end of the boom, and the boom rotates at an angle relative to a certain tilt axis, and the position of the tilt axis is mostly fixed, but some can tilt up and down within the range of less than 100 degrees.

適用范圍：電動機驅(qū)動的，承載能力多在0.5噸左右，適用小型焊件的翻轉(zhuǎn)變位。液壓驅(qū)動的，承載能力多在10噸左右，適用于結(jié)構(gòu)尺寸不是很大的但自重較大的焊件。它們在焊條電弧焊中應(yīng)用較多。

Scope of application: motor driven, bearing capacity of about 0.5 tons, suitable for small weldment turnover displacement. Hydraulic drive, the bearing capacity of more than 10 tons, suitable for the structure size is not very big but the weight of the larger weldment. They are widely used in shielded metal arc welding.

2、座式焊接變機性能特點與使用范圍

2. Performance characteristics and application scope of seat type welding transformer

工作臺連同回轉(zhuǎn)機構(gòu)支撐在兩邊的傾斜軸上，工作臺以焊速回轉(zhuǎn)，傾斜軸通過扇形齒輪或液壓缸，多在110-140度的范圍內(nèi)恒速旋轉(zhuǎn)。

The worktable is supported on inclined shafts on both sides together with rotary mechanism. The worktable rotates at welding speed. The inclined shaft rotates at a constant speed in the range of 110-140 degrees through sector gear or hydraulic cylinder.

適用范圍：0.5~50噸的翻轉(zhuǎn)變位，是目前產(chǎn)量大，規(guī)格全，應(yīng)用廣的結(jié)構(gòu)形式，常與伸臂式操作機或弧焊機器人配合使用

Scope of application: 0.5 ~ 50 tons of turnover displacement, which is a structure with large output, complete specifications and wide application. It is often used with boom manipulator or arc welding robot

3、雙座式焊接變位機性能特點與使用范圍

3. Performance characteristics and application scope of double seat welding positioner

工作臺在"U"形架上，以所需的焊件回轉(zhuǎn)。該機不僅穩(wěn)定性好，而且如果設(shè)計得當(dāng)，傾斜運動的重 心將通過或接近傾斜軸線，使傾斜驅(qū)動力大大減速小，因此重型變位機多有這種結(jié)構(gòu)。

The worktable is on a "U" shaped frame and rotates with the required weldment. This machine not only has good stability, but also if it is designed properly, the center of gravity of the tilting motion will pass through or close to the tilting axis, so that the tilting driving force will be greatly reduced. Therefore, most heavy positioners have this structure.

適用范圍：50T以上的重型大尺寸焊件翻轉(zhuǎn)，多配大型門式焊接操作機，或伸臂式焊接操作機配合使用

Scope of application: heavy and large size weldments over 50t are overturned, which are mostly equipped with large gantry welding operator or outrigger welding operator