3-Axis Programmable Selective Soldering Robot

Everything below is part of the ₹85,000 base configuration. Nothing in this list is an add-on, and nothing in it needs a PC, a CAM seat or a separate controller cabinet.

Quoted separately: larger or bespoke bed sizes, dual-head configurations, integrated conveyor variants, and board-specific fixturing plates. Send us the board and the volume and we will price the variant around it rather than selling you a bigger machine than the job needs.

This machine sits in a specific gap. Below it is a hand-soldering bench, where quality is whatever the operator’s day was like. Above it is a full selective or wave line, which is an order of magnitude more capital and only pays back at volumes most Indian EMS shops never reach. The honest comparison:

The practical trigger for buying one is not headcount — it is repeat work. If the same twenty joints go on the same board every week, a taught program removes the variance that hand soldering re-introduces every single time the job comes back.

1. Fixture the board. The 180 × 240 mm bed is a T-slot aluminium table, so a clamp, a printed jig or a machined plate all bolt straight down. Repeat jobs keep their fixture, which is what makes a saved program valid the second time.
2. Teach the points. Jog the head to the first joint with the pendant’s dial and save it. The machine stores tip position, dwell time, wire volume and approach angle for that point — not a global setting, a per-point one.
3. Pick the approach angle. Four 45° approaches plus a straight 90° plunge are available per point. A pad recessed beside a tall electrolytic gets an angled approach; an open through-hole gets the plunge.
4. Set the iron. One temperature for the program, anywhere in 90–480 °C, chosen for the alloy and the thermal mass of the joint.
5. Save and run. The program goes to the on-board SD card. Start from the pendant or the foot pedal; play, pause and stop are live during the run.
6. Come back to it. Next week the same program reloads from SD — including after a power cut, which is the failure mode that usually costs a shop an afternoon of re-teaching.

The iron is closed-loop temperature-controlled across 90–480 °C. That single band spans every alloy family a general-purpose assembly shop runs, so switching between a RoHS job and a leaded legacy repair is a setting, not a hardware change:

• Lead-free SAC305 (Sn96.5/Ag3.0/Cu0.5) — melts around 217 °C, the default for RoHS/CE-bound product.
• Leaded eutectic Sn63/Pb37 — melts at 183 °C, still standard for defence, aerospace and legacy repair work.
• Low-temperature bismuth alloys — melt near 138 °C, used where a heat-sensitive component or a plastic housing will not survive a normal profile.

Those melting points are properties of the alloy, not of this machine; the reason they matter here is that the machine’s range comfortably brackets all three with headroom for the thermal mass of a large ground plane or a battery tab. The operator sets one temperature per program, and every joint in that program then gets the same one — which is precisely the variable a hand-soldering bench cannot hold still.

Network. The machine joins a 2.4 GHz WiFi network and is driven from karmyogi.hjlabs.in, the same browser workbench that runs our other machines. Firmware arrives over the air, so a fix does not mean a technician with a USB stick.

Programs as assets. Because programs live on a removable SD card, they can be copied, archived with the job traveller, and moved to a second machine when you add one. A power cut does not cost you the teach session.

Cell building. The robot pairs naturally with our AutoCut V2 wire cutter and wire and cable cutting-stripping machine to close a wire-to-board cell: cut and strip, present, solder. For the enclosure and panel side of the same product, our 3-Axis CNC Router Machine cuts front panels, cut-outs and fixture plates from the same drawing — and shares this machine’s pendant-first design philosophy, so an operator trained on one is not lost on the other.

Inspection. Where joint-level traceability is required, the machine’s fixed part position makes it straightforward to add a camera station; our computer vision for manufacturing team builds solder-joint AOI on exactly this kind of repeatable cell.

Something different? Larger beds, dual heads and conveyor-fed variants are built to order through Custom Automation Solutions.

Selling the wrong machine costs us more than not selling one. Four cases where you should not buy this:

• Fine-pitch SMD and BGA. This is a contact point-soldering robot, not a reflow oven. Paste-printed, fine-pitch and ball-grid work belongs on a print-place-reflow line.
• Boards larger than the bed. The standard work area is 180 × 240 mm. Bigger boards need a custom bed — ask before you order, not after.
• Genuine high volume on one product. If a single board runs continuously in the tens of thousands, a dedicated selective or wave line will beat this on cost per joint despite the capital.
• One-offs and rework. Teaching a program only pays back when the job repeats. For prototype builds and repairs, a skilled hand and a good iron are still the right tools.

The base configuration is ₹85,000 + GST, built to order in Gandhinagar, Gujarat, with the lead time confirmed in writing on the quotation. Custom bed sizes, dual heads and conveyor variants are quoted separately and confirmed in writing before build starts.

Domestic shipping within India is free on orders above ₹5,000 and moves via Blue Dart, DTDC or FedEx; larger machines may go freight-on-road, which we coordinate with you directly. Full terms are on the shipping policy page.

The machine carries a 12-month warranty against manufacturing defects. Standard configurations may be returned within 7 calendar days of delivery if unused and in original packaging, with return shipping at the customer’s cost — see the return and refund policy. Because firmware updates are delivered over the air, most support fixes reach the machine without a site visit.

To get a firm number, send the board, the joint count and the annual volume through the contact form or on WhatsApp. We quote the configuration the job actually needs.