How to verify tube-laser software on your own assemblies and frames ART-188

First define the boundary of the software scope

The words “software” can refer to different products. One module creates part geometry, a second prepares NC code, a third makes nests, a fourth simulates movements, a fifth plans jobs and a sixth collects production data. Some functions are part of the base licence; others are sold separately or work only with a particular machine model, cutting head, loader or controller version.

Before the demonstration, ask the supplier for a map: module name, version, licence type, workstation, required options, exchange format, and responsibility for updates and support. Separately record what happens without a cloud service or network access if that matters to the business. Do not treat capabilities of one ecosystem as a universal property of all tube cutters.

Build a test set from part families

One complex assembly is not representative of production. Select at least three families. The first is a typical serial frame with repeated tubes. The second is a low-volume frame with many unique positions. The third is a complex assembly with spatial joints, holes on different faces, process marks and parts of different lengths. Add one old model with imperfect data structure: such files are often received from customers.

For each family, prepare native CAD, a neutral 3D format, a PDF drawing, a profile specification and an expected outcome. Mark critical holes, joint surfaces, longitudinal-seam orientation, part numbers, permissible remnant and kitting rules. If the future flow includes tube bending, add at least one part with that transition, but do not regard claimed integration as evidence without a real file.

Gate 1: import without losing design intent

During import, check more than whether the file opens. Compare units, coordinates, wall thicknesses, axis directions, naming convention, component count and part revisions. Ask the operator to deliberately import a file containing a duplicate position, a missing profile and an incorrect orientation. The system must either handle the situation correctly or issue a clear message, rather than silently creating an incorrect program.

Record which assembly properties transfer automatically and which are entered manually. If material, thickness, seam orientation or technology class must be assigned again after every change, that is real effort and a source of errors. For a repeat order, check whether the link to the model revision is retained and whether the exact version released to production is visible.

Gate 2: joint recognition and process geometry

CAD/CAM may offer ready-made joint types, automatically build intersections, or allow their parameters to be edited. But correctness must be judged against your assembly rules. For each joint, compare the contour with the design intent: clearance, compensation, end position, welding access, drain holes, marks and protection of functional surfaces.

Change one key frame parameter—an angle, length or section—and regenerate the result. See whether dependent contours update without manual repair. Useful automation does not merely create the first version quickly; it behaves predictably after a revision. At the same time, no joint library determines structural strength or replaces engineering calculation or welded-joint requirements.

Gate 3: manufacturability and cutting-head access

Correct CAD geometry does not yet guarantee that it can be cut. The program must consider the kinematics of the particular machine, chucks, supports, head envelope, part length, cut-off, possible drop and remnant behaviour. Test a hole near a chuck, a contour on the inner side of an open profile, a long narrow part and a short element with a small supported area.

Require the system to show an inaccessible or risky feature explicitly. If an operator can generate NC code with geometry outside the real working zone without a warning, the risk is moved to the shop floor. If the program changes a path automatically, ask to see a log or a clear explanation of that change. Automatic correction without transparency makes acceptance harder.

Gate 4: simulation as a control, not a video

BLM GROUP describes Part Viewer as a three-dimensional simulation tool using the system's technology database, while TRUMPF positions Programming Tube as an NC-creation environment with automated steps. This confirms the availability of such approaches in specific ecosystems. For your configuration, it must be proven separately which machine components, options and states are actually included in the simulation model.

Run the full program without accelerated hiding of problem areas. Check chucks, head, supports, part, scrap, loading and unloading. Add a control scenario with a deliberate collision or an unstable remnant. A good test shows whether the system finds the error before the shop floor and how the operator corrects it. Simulation does not replace a dry run, machine limits or the manufacturer's safety procedures.

Gate 5: nesting and the material balance

For tube, bar length, clamping zones, cut-off, gaps, defective ends, profile orientation, longitudinal seam and the ability to mix orders matter. Ask for three nesting variants: equal bars, actual stock with different lengths, and an urgent order where delivery time is prioritised. Compare not an attractive utilisation percentage, but the full balance in millimetres and kilograms.

BLM GROUP publicly describes different nesting strategies in ProTube, including work with equal, different and optimum bar lengths. That is a vendor-specific example. The test must verify the available licence, your remnant rules and the ability to transfer the result to the warehouse or ERP scope without manual duplicate work.

Gate 6: programming time and resilience to changes

Record the time from receiving a valid model to a ready, checked NC program. Divide it into import, cleanup, technology preparation, nesting, simulation, correction and documentation release. Then issue a revision: change two holes, one profile and the quantity. Measure the repeat cycle and number of actions.

The test must not be performed only by the supplier's demonstrator. After brief training, let your technologist repeat the route independently while the manufacturer's representative only observes. Record questions, errors and places where hidden expert action was needed. They determine the real need for training and support.

Gate 7: release to the shop and traceability

Check how a program receives approval, who can change it, how a previous revision is restored and how the operator sees the correct job. The package must align article ID, revision, material, profile, quantity, NC version and kitting scheme. If marks are made by laser, assess their readability and connection to the part after painting or welding.

Deliberately try opening an old program after the technology database changes. Ask whether an automatic recalculation, warning or retention of old parameters will occur. This matters for repeat orders: stability does not mean blindly reproducing outdated technology.

Gate 8: physical cutting and assembly

The final software check happens on metal. Cut a representative set, mark the parts, sort them and assemble the unit in the normal fixture. Measure critical coordinates, relative hole positions, joint gaps, length, angle and frame diagonals. Separately record manual rework, deburring, position searches and repeat datuming.

If individual parts meet the drawing but the frame cannot be assembled without fitting, the digital route has not passed the business check. The cause may lie in CAD intent, material, tube deformation, clamping, compensation, cutting or the welding fixture. The test should help localise the cause rather than automatically blame software.

Evaluation matrix

Use one scale for every scenario: `PASS`, `PASS WITH CONDITION`, `FAIL`, `NOT TESTED`. Add evidence: screenshot, exported report, NC version, part photograph, measurement protocol or time log. A condition must be specific: a required option, manual operation, format change, separate training or postprocessor modification.

Set weights according to the real flow. For contract manufacturing, quick import of different formats and quoting may be critical. For serial frames, revision control, nesting and traceability matter. For complex spatial assemblies, joints, access, simulation and assembly matter. A total score without weights hides failure of a key function.

Data for the RFQ and contract

The specification should include module names and versions, licence quantity, import formats, a postprocessor for the exact configuration, integration list, update policy, backup, training, support language and the acceptance dataset. Define who corrects a problem when a model imports but NC does not reproduce the agreed geometry.

Do not write a generic requirement such as “software must work with all files.” Formulate repeatable tests with specific files, expected outcome, time, number of manual steps and acceptance criterion. Your own test data must be shared under agreed usage rights and confidentiality.

How to distinguish a strong demonstration from staging

A strong demonstration starts with your source files, includes errors, a revision and a physical result. It leaves an evidence package that can be reviewed after the meeting. A weak demonstration works only with a prepared OEM file, hides setup time, does not show licences and ends with a simulation rather than a completed assembly.

Ask to repeat one scenario with another operator and at another workstation. Check project export and restoration. Change the order of parts in the nest and see whether marks and kit completeness remain intact. Such small actions quickly show where the system has robust logic and where the outcome depends on the demonstrator's personal experience.

Post-acceptance control

Even a successful FAT does not end verification. In the first weeks, collect median programming time, the share of imports needing manual repair, number of changes after release, version errors, material-utilisation rate, unplanned stops caused by NC and support response time. Compare by part family rather than using a single average.

Create a small regression set of five to ten typical programs. After a software or technology-database update, repeat import, generation, simulation and checksum control of the NC package. This does not mean forbidding updates; it allows them to be introduced in a controlled way.

Criterion for a ready solution

The software scope can be regarded as confirmed when your employee, using licences and configuration included in the supply, imports the agreed assemblies, creates the technology, finds control errors, forms a nest, issues a traceable NC program and obtains a part set that assembles and passes the defined measurement. Time and manual actions must fit the business model.

Any untested functions remain open conditions, not assumptions. This approach turns a discussion of “convenient modern software” into evidence that the digital route works on your frames, with your people and under your responsibility for the result.

Also test quoting and planning

If the software package is used for commercial costing, repeat the test before an order exists. Load the same models and generate material requirement, estimated cycle, setup and auxiliary actions. Compare the estimate with the actual control cut. Break down the deviation into causes: CAD cleanup, slow features, loading, unloading, manual sorting, changeover and unplanned rework.

Do not demand absolute forecast accuracy on the first part. Require a transparent basis and calibration procedure. The system is useful if, after actual data accumulate, the technologist can update standards in a controlled way without rewriting every estimate manually. Check whether the cost-model version is linked to the quotation and whether the applied rates and parameters are visible.

Check profile and technology libraries

Ask to create a new profile from your certificate or measurement rather than selecting an ideal standard section. State the actual corner radius, wall and permitted deviations. See who may approve the library, how its revision is marked and what happens to previously released programs after the record changes.

Test technology tables in the same way. Prevent unauthorised changes to production parameters, while retaining a controlled trial and approval mechanism. If the vendor supplies automatic updates, record whether they can change the result of an old program. A library is production master data, not one operator's private collection of settings.

Check recovery after a stop

During the control cycle, simulate a permitted normal stop: a pause, quality control, replacement of a consumable or a job break. Under the manufacturer's documentation, check how the system identifies the last completed part, bar remnant, kit state and a safe restart point. Do not create an emergency or bypass interlocks for the test.

After recovery, marking, quantities and traceability must not diverge from the physical kit. It is especially important to test mixed nesting: a restart must not create a duplicate position or omit a part. Record required manual confirmations and the responsible role.

Assess training through working scenarios

Instead of agreeing only on a total number of training hours, agree the outcome. After a basic course, an operator must load a job, perform preflight, recognise an alarm, restore the cycle and close a kit. A technologist must import a new assembly, correct a control error, create a nest and issue a revision. An administrator must create a user, make a backup and restore it.

Create a competency matrix and repeat the practical test after two to four weeks. If a task is completed only with a remote OEM engineer, knowledge has not yet been transferred. At the same time, complex model-specific problems may legitimately remain in the support scope; the essential point is to record the channel, language, response time and escalation.

Define the minimum evidence package

After the demonstration, retain source CAD files with revision, imported project, warning list, screenshots of critical stages, configuration/licence list, simulation report, released NC identifier, nesting report, photographs of bar and parts, measurement record, assembly outcome and time log. Every file should share a common test ID.

This makes the conclusion reproducible independently of the oral presentation. If a quotation or machine option changes a month later, the team can see which evidence has become stale. The evidence package also gives independent QA material to check facts, scope, navigation and claims without repeating the full cutting trial.

Limits of application

The sources are official manufacturer materials and confirm functions only for the described products. They do not prove suitability of another model, a particular licence, an integration or L-SEL files without a separate test.

Safety boundaries

This article does not define machine-safety, structural-design, WPS, guarding, cyber-security or CAD-use requirements. All machine operations must follow the documentation, risk assessment and procedures of the specific manufacturer.

Need service advice?