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點焊對所用的機器人的要求是不很高的。因為點焊只需點位控制，至于焊鉗在點與點之間的移動軌跡沒有嚴格要求。這也是機器人最早只能用于點焊的原因。點焊用機器人不僅要有足夠的負載能力，而且在點與點之間移位時速度要快捷，動作要平穩，定位要準確，以減少移位的時間，提機械臂。

高工作效率。點焊機器人需要有多大的負載能力，取決于所用的焊鉗形式。對于用與變壓器分離的焊鉗，30～45kg負載的機器人就足夠了。但是，這種焊鉗一方面由于二次電纜線長，電能損耗大，也不利于機器人將焊鉗伸入工件內部焊接；另一方面電纜線隨機器人運動而不停擺動，電纜的損壞較快。因此，目前逐漸增多采用一體式焊鉗。這種焊鉗連同變壓器質量在70kg左右。考慮到機器人要有足夠的負載能力，能以較大的加速度將焊鉗送到空間位置進行焊接，一般都選用100～150kg負載的重型機器人。為了適應連續點焊時焊鉗短距離快速移位的要求。新的重型機器人增加了可在0.3s內完成50mm位移的功能。這對電機的性能，微機的運算速度和算法都提出更高的要求。 

英文版：

The requirements for spot welding on the robot used are not very high. Because spot welding requires only point control, there is no strict requirement for the movement path of the welding tongs between points. This is also the reason why robots can only be used for spot welding. The spot welding robot not only needs to have sufficient load capacity, but also has a fast speed when moving between points, and the movement should be smooth and the positioning should be accurate to reduce the displacement time and lift the robot arm.

High work efficiency. How much load capacity a spot welding robot needs depends on the type of welding tongs used. For welding tongs separated from the transformer, a robot with a load of 30 to 45 kg is sufficient. However, on the one hand, the welding tongs have large electrical energy loss due to the length of the secondary cable, and are not conducive to the robot to extend the welding tongs into the workpiece. On the other hand, the cable runs without the robot moving, and the cable is damaged quickly. . Therefore, the use of integrated welding tongs is gradually increasing. This welding tongs together with the transformer quality is around 70kg. Considering that the robot has sufficient load capacity, the welding tongs can be sent to a space position for welding with a large acceleration, and a heavy-duty robot with a load of 100 to 150 kg is generally selected. In order to meet the requirements of short-distance rapid displacement of welding tongs during continuous spot welding. The new heavy-duty robot adds the ability to perform 50mm displacement in 0.3s. This puts higher requirements on the performance of the motor, the operation speed of the microcomputer and the algorithm.