A tool setter can be mechanically installed, powered and visibly triggered—and still not be ready to protect a production run. The missing work is usually commissioning: proving that the physical device, electrical signal, CNC logic and stored tool data agree with one another.
That distinction matters. A tool setter establishes tool dimensions and condition data for the control; the control then uses that data in tool-offset and machining cycles. If the mounting reference, trigger input, macro variables or datum process is wrong, a seemingly normal trigger can still produce an incorrect offset. The result may be an air cut, an over-cut, a damaged tool setter or a nonconforming part.
This checklist is intended for a fixed, contact-type Ajustador de herramientas CNC on a machining centre. It is also useful when accepting an installed system from a machine builder or integrator. It is not a substitute for the machine-tool manual, the CNC-control manual, the tool setter’s installation instructions or your site’s safety procedure. Have a qualified technician review the final settings before production.
Start with a clear acceptance target
Before changing parameters, decide what “ready” means for this particular machine. Record:
- the machine model, control and software/macro version;
- the tool setter model, output type and wiring diagram revision;
- the tool-setting tasks to be used (for example, length setting, diameter setting or broken-tool checking);
- the reference tool or certified artefact used for verification;
- the intended tools, holders, speeds and approach directions; and
- who may change protected parameters, PMC/PLC logic or probing macros.
This record is more useful than a generic pass/fail sticker. It creates a traceable baseline for future troubleshooting after a crash, stylus/pad replacement, machine service or software change.
1. Confirm the mechanical location and safe approach envelope
Verify the actual tool-setter position against the machine layout, not just the drawing. A contact tool setter is normally mounted to the table or machine structure; its measured position must correspond to the coordinates used by the cycle.
Check that the tool can approach and retract without contacting fixtures, clamps, pallet hardware, guards or the setter body. Include the longest tool, the largest diameter tool and toolchanger clearance in this check. If the machine uses a rotary axis, check the relevant orientations as well.
Also inspect fastening, cable protection and chip/coolant exposure. Do not assume a protection rating eliminates the need for sensible routing and cleaning. The objective is simple: during every permitted cycle, only the designed contact surface should be touched.
2. Prove the trigger signal before running an automatic cycle
Use the control diagnostics or the machine builder’s approved I/O screen to confirm the input’s normal and triggered states. With the machine in a safe condition, actuate the contact surface by hand only in the manner permitted by the product manual. Observe whether the correct input changes state consistently and returns to normal after release.
Then verify the details that are easy to overlook:
- input address and signal polarity;
- normally-open/normally-closed expectation in the control logic;
- cable shield, connector and strain relief condition;
- no intermittent state when cables or machine axes are moved within the approved range; and
- any indicator light behaviour specified by the manufacturer.
Do not bypass an input or edit safety-related machine logic merely to make a screen look correct. If the displayed state differs from the wiring documentation, stop and resolve it with the machine builder or qualified controls technician.
3. Verify the cycle uses the correct tool setter and correct coordinates
An I/O signal can be correct while the macro calls the wrong input, coordinate, offset register or unit. Read the actual production macro/cycle—not an old printout—and identify:
- the selected tool-setter input;
- the programmed approach point and measuring direction;
- the safe start and retract positions;
- the offset table and variable numbers written by the cycle;
- the unit system; and
- the alarm or recovery behaviour after an unexpected trigger or no trigger.
Where possible, perform a dry run above the tool setter with the spindle stopped, reduced feed and single-block control, following the machine builder’s instructions. A dry run cannot validate the final measurement, but it can expose an incorrect direction, unsafe approach or unexpected macro path before contact is possible.
4. Establish or re-establish the setter datum
The control must know the relationship between the machine coordinate system and the tool setter’s effective contact surface. Manufacturers often refer to this as datuming or calibration. The exact method depends on the setter, macro package and control.
Use the approved reference tool or artefact specified by the machine builder or probing documentation. Record its identity, nominal dimensions, condition and the date. Make sure the value is entered in the expected units and register.
Re-datum when the manufacturer or your documented procedure calls for it—for example after replacement of the contact surface or stylus, a mechanical realignment, suspected damage, or work that could alter the reference relationship. Never copy a datum value from a different machine simply because the hardware appears similar.
5. Validate a length measurement with a known tool
Choose a stable, clearly identified reference tool. Run the approved length-setting cycle at the specified feed and compare the resulting value with the known value or an independent, controlled measurement method used at your site.
Repeat the same process several times without changing the setup. You are looking for repeatability in the complete system: tool, holder, spindle, setter, signal, motion and macro—not a single favourable number. If results wander, investigate before production. Possible contributors include tool seating, holder cleanliness, spindle condition, loose mounting, cable faults, an incorrect approach method or an unsuitable reference tool.
Set an internal acceptance limit that matches the part tolerance, process capability and your quality plan. Do not publish or adopt a single universal tolerance: the appropriate limit is application-specific.
6. Validate the measurement method for the tool geometry you will actually use
Tool length is not the whole story. If the process sets diameter, radius, broken-tool condition or a special geometry, validate that specific cycle with representative tools.
For example, a long drill, a small end mill, a face mill and a ball-nose tool can require different approach positions or measurement logic. Confirm that the tool’s programmed contact point is physically valid and that the macro writes the intended geometry/wear offset. For non-contact laser systems, use the supplier’s prescribed beam, coolant and air-management procedure rather than applying a contact-setter checklist unchanged.
This is also the right stage to confirm how broken-tool detection is used. It is a defined check with a programmed reference and alarm response—not proof that every possible cutting defect will be detected.
7. Run a controlled first article, then check the result outside the machine
Use a safe test piece or first-off part, appropriate safeguards and reduced-risk machining conditions. Set the relevant tools through the approved process, machine a feature that is sensitive to the tool offset, then inspect it with the normal quality method.
Compare the measured result with the programmed target and the record from the tool-setting cycle. This closes the loop between tool data and actual metal removal. A correct I/O signal alone does not do that.
If the part result is wrong, avoid compensating blindly in the offset table. First determine whether the issue originates in the setter reference, tool data, work offset, program, fixture, machine condition or cutting process. A documented root cause prevents a temporary offset change from masking a recurring problem.
8. Lock the baseline and define routine checks
Once accepted, save the settings and records under the machine’s change-control procedure. Capture screenshots or exports of relevant macro parameters where permitted, plus the commissioning report, reference-tool result and first-article inspection.
Define who checks the tool setter and when. A practical routine may include visual inspection for chips or damage, confirmation of the expected input state, periodic reference-tool verification and a re-datum trigger after specified service events. The interval should come from the machine builder’s instructions, the tool-setter manual, risk assessment and production experience—not a number copied from another shop.
A note for Qidu DTS200 users
Qidu’s public DTS200 page describes a cabled, +Z contact tool setter with an A/NO output and a 20 mm touch pad. The published page also lists its test repeatability condition, electrical rating, trigger force and protection information. Those details do not determine whether it is compatible with a specific control, macro, voltage arrangement or machine environment. Confirm the current drawing, wiring diagram, model revision and approved commissioning procedure with Qidu technical support before installation or parameter changes.
The practical takeaway
A good commissioning process proves a chain: mechanical position → trigger input → CNC cycle → datum → offset data → machined part. If any link is assumed rather than verified, an automatic tool-setting cycle can create confidence without control.
For machine builders and distributors, providing a completed commissioning record with the tool setter is a practical way to make handover clearer. For machining teams, it turns a new device into a controlled process rather than an unverified accessory.
Need help reviewing tool-setter fit, wiring information or the current specification for a Qidu model? Contact Qidu Metrology with the machine model, CNC control, intended tool-setting tasks and photos of the installation area.
