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點(diǎn)焊機(jī)器人的基本功能和裝備要求

來源:http://meangen.com/  發(fā)布時(shí)間:2022-05-13 瀏覽次數(shù):0

在諸多焊接方式中,由于點(diǎn)焊只需點(diǎn)位控制,于焊鉗在點(diǎn)與點(diǎn)之間的移動(dòng)軌跡沒有嚴(yán)格要求,因此點(diǎn)焊對(duì)所用的機(jī)器人的要求是不很高的,這也點(diǎn)焊機(jī)器人較早被應(yīng)用的原因之一。

In many welding methods, spot welding only needs point position control, and there are no strict requirements for the moving track of welding tongs between points. Therefore, the requirements for spot welding robots are not very high, which is one of the reasons why spot welding robots are applied earlier.
但為了確保焊接質(zhì)量,基本的要求還是要滿足的,比如說點(diǎn)焊機(jī)器人不僅要有足夠的負(fù)載能力,而且在點(diǎn)與點(diǎn)之間移位時(shí)速度要快捷,動(dòng)作要平穩(wěn),定位要準(zhǔn)確,以減少移位的時(shí)間,提高工作效率。
However, in order to ensure the welding quality, the basic requirements should be met. For example, the spot welding robot should not only have sufficient load capacity, but also have fast speed, stable action and accurate positioning when shifting between points, so as to reduce the shift time and improve the work efficiency.
在實(shí)際焊接過程中點(diǎn)焊機(jī)器人需要有多大的負(fù)載能力,主要取決于所用的焊鉗形式,對(duì)于用與變壓器分離的焊鉗,30~45kg負(fù)載的機(jī)器人就足夠了。但是這種焊鉗一方面由于二次電纜線長,電能損耗大,也不利于機(jī)器人將焊鉗伸入工件內(nèi)部焊接;另一方面電纜線隨機(jī)器人運(yùn)動(dòng)而不停擺動(dòng),電纜的損壞較快。因此一體式焊鉗逐漸將其代替。
In the actual welding process, the load capacity of the spot welding robot mainly depends on the form of welding tongs used. For the welding tongs separated from the transformer, a robot with a load of 30 ~ 45kg is enough. However, on the one hand, due to the long secondary cable and large power loss, this welding clamp is not conducive to the robot extending the welding clamp into the workpiece for welding; On the other hand, the cable keeps swinging with the movement of the robot, and the cable is damaged faster. Therefore, the integrated welding tongs will gradually replace them.
考慮到點(diǎn)焊機(jī)器人要有足夠的負(fù)載能力,才能以較大的加速度將焊鉗送到空間位置進(jìn)行焊接,一般都選用100~150kg負(fù)載的重型機(jī)器人。為了適應(yīng)連續(xù)點(diǎn)焊時(shí)焊鉗短距離快速移位的要求,有些重型機(jī)器人增加了可在0.3s內(nèi)完成50mm位移的功能,而這也對(duì)電機(jī)的性能,微機(jī)的運(yùn)算速度和算法都提出更高的要求。
Considering that the spot welding robot must have enough load capacity to send the welding tongs to the spatial position for welding with a large acceleration, the heavy robot with a load of 100 ~ 150kg is generally selected. In order to meet the requirements of short-distance and rapid displacement of welding tongs during continuous spot welding, some heavy-duty robots have added the function of completing 50mm displacement in 0.3s, which also puts forward higher requirements for the performance of the motor, the operation speed and algorithm of the microcomputer.
由于點(diǎn)焊機(jī)器人采用了一體焊鉗,焊接變壓器裝在焊鉗后面,所以變壓器必須盡量小型化。對(duì)于容量較小的變壓器可以用50Hz工頻交流,而對(duì)于容量較大的變壓器,已經(jīng)開始采用逆變技術(shù)把50Hz工頻交流變?yōu)?00~700Hz交流,使變壓器的體積減少、減輕。
Since the spot welding robot adopts an integrated welding clamp and the welding transformer is installed behind the welding clamp, the transformer must be miniaturized as much as possible. For transformers with small capacity, 50Hz power frequency AC can be used, while for transformers with large capacity, inverter technology has been used to change 50Hz power frequency AC into 600 ~ 700Hz AC, so as to reduce and reduce the volume of transformers.
另外點(diǎn)焊機(jī)器人的焊鉗通常用氣動(dòng)的焊鉗,氣動(dòng)焊鉗兩個(gè)電極之間的開口度一般只有兩級(jí)沖程;而且電極壓力一旦調(diào)定后是不能隨意變化的,有助于提高點(diǎn)焊質(zhì)量。
In addition, the welding tongs of spot welding robot usually use pneumatic welding tongs, and the opening between the two electrodes of pneumatic welding tongs is generally only two-stage stroke; Moreover, once the electrode pressure is set, it can not be changed at will, which is helpful to improve the quality of spot welding.
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The wonderful content of this article is provided by Shandong welding machine. There are many wonderful contents on this website. You can click to enter more contents: http://meangen.com We have special customer service to answer your questions

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