Understanding Torch Mounts

Oct 12, 2023

Understanding your torch mount and what provides optimal results is important to increase overall throughput and quality on the welding production line. This article will discuss everything you need to know about the different torch mounts, how to best evaluate, and then move forward.

Robot welding torch mounting

There are two types of mount­ing options avail­able for weld­ing jobs: over-arm and through-arm mounts.

Through-Arm Torch Mounting

The more com­mon set-up today for robots today is the through-arm sol­id mount. This pro­vides for a much clean­er” end of the torch and pro­vides for clear­ance in tight areas when reach­ing down inside of fix­tures. Brack­ets and fit­tings are also elim­i­nat­ed, pro­vid­ing for a reduc­tion in over­all hard­ware. Pro­gram­ming headaches are less fre­quent as through-arm tech­nol­o­gy has proved to be more modern. 

Through-arm torch­es can use col­li­sion mounts or sol­id mounts. 

Col­li­sion mounts enable ear­ly and quick detec­tion of a col­li­sion and will shut the torch off if the swan­neck con­tacts any fix­tures, per­sons, or oth­er mate­ri­als. This pro­vides a reduc­tion in dam­age if an acci­dent would occur. 

You could also choose a sol­id mount and install col­li­sion soft­ware that will offer the same process­es through an exter­nal con­troller. When the con­troller sens­es a brief rise of motor amper­age out­side of the expect­ed range, the robot will then pre-emp­tive­ly shut down as a pro­tec­tive measure.

The final eval­u­a­tion of a sol­id mount includes under­stand­ing how strong and repeat­able it is by look­ing at the dow­el pins, the dow­el pin size ver­sus posi­tion, the mate­r­i­al of the sold mount, and the mate­r­i­al thick­ness of the flange going onto the robot.

Over-Arm Torch Mounting

Over-arm torch­es were the pio­neers of robot­ic weld­ing.

This set-up can put the torch at obscure angles in tight places that could not be accom­plished with a through-arm. How­ev­er, the process requires a bit of mod­i­fi­ca­tion and time. 

Over-arm mounts do pro­vide easy main­te­nance as the entire torch pack­age is out­side of the arm and parts can be main­tained and fixed quick­er than through-arm. Fur­ther­more, over-arm mounts use a series of dow­els and form the basis of a shock sen­sor which can take a direct impact in the Z direction. 

They use a sol­id mount or col­li­sion mount. Just like through-arm, it is impor­tant to make sure the robot has on-board col­li­sion sensing. 

Then, it is impor­tant to look at and under­stand the mount pat­terns, torch angle, and clear­ance. A good mount will be the strong point in the event of a crash as it is less time-con­sum­ing to replace a dam­aged torch neck than torch mount.

If you choose a break­away style for a torch mount, the effec­tive­ness relies on prop­er instal­la­tion. It is impor­tant to choose the cor­rect adapter plates and prop­er spring pres­sure for the torch/​equipment weight.

Torch Mount Best Practices

It is impor­tant to real­ly study and under­stand the repeata­bil­i­ty, ease of instal­la­tion, and how the mount arm clamps to the col­li­sion sen­sor with your robot­ic system. 

Eval­u­at­ing the mount­ing accu­ra­cy will pro­vide a bet­ter and more con­sis­tent prod­uct. Reli­able robot weld­ing torch mounts will have con­sis­tent repeata­bil­i­ty to min­i­mize any nec­es­sary rework­ing and ulti­mate­ly keeps the pro­duc­tiv­i­ty high. 

Regard­less, the set-up of both styles should eval­u­ate sol­id machine sur­faces and a min­i­mum num­ber of bolt up com­po­nents as this will lead to a more sol­id and repeat­able mount­ing structure.

Con­tact Robots​.com

For more infor­ma­tion on torch mounts, con­tact the rep­re­sen­ta­tives at Robots​.com online or at 8777626881.

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