A Hermle C800U using a SINUMERIK 840D control with ShopMill has an established tool-name workflow, while legacy programs identify tools with labels such as T61. Because the available evidence does not identify a machine parameter that changes ShopMill to numeric tool selection, treat such a conversion as unverified. Resolve the mismatch through controlled tool-list mapping or an OEM-approved configuration review.
Separate Tool Identity From Magazine Position
All tools in the reported installation occupy fixed positions, but a fixed pocket does not describe the cutter geometry. The magazine can contain three different 2 mm cutters, including variants with corner radii of 0.2, 0.3, or 0.4. A label such as T61 therefore identifies only the established tool reference unless the tool list explicitly maps it to the required geometry.
| Available information | What it establishes | What remains unknown |
|---|---|---|
| Legacy reference T61 | The program expects the tool associated with T61 | Cutter diameter, radius, and current physical identity |
| Fixed magazine position | The assigned tool is expected to remain in one pocket | Whether the installed cutter matches the program requirement |
| Descriptive name such as “Carbide 2 r0.2” | The operator can distinguish geometry in the tool list | Whether existing programs reference that descriptive name |
Choose a Compatible Naming Strategy
The evidence supports using the legacy T-number as the tool name, which preserves programs already written around references such as T61. Descriptive names improve operator recognition but would require the established programs to use the same names. Do not rename tools across hundreds of programs without first creating a verified mapping between every legacy reference, tool-list entry, fixed pocket, and measured cutter.
A ShopMill installation on a Hermle C40U was reported to provide a softkey that transfers a tool name from the tool list into a program. This does not prove that the same function or configuration exists on the C800U; verify its presence directly on the affected control before adopting that workflow.
Audit the Existing Programs and Tool List
- Search the program for the reported reference, such as T61, when a tool breaks or its identity is unclear.
- Match that reference to the tool-list entry and its fixed magazine position.
- Confirm the installed cutter’s diameter and corner radius against measured tool data; do not infer geometry from the pocket or T-number.
- Choose either legacy-compatible T-number names or descriptive names, then keep the selected convention consistent between the tool list and programs.
- If numeric selection through a machine parameter is required, obtain the exact C800U and 840D configuration documentation or an OEM-approved procedure before changing machine data.
Verify Before Production
Test the selected convention with a controlled program and confirm that every requested reference resolves to the intended tool-list record, fixed pocket, and measured cutter. The verification succeeds only when the program reference and physical tool agree; a successful tool change alone does not confirm the correct diameter or corner radius.
FAQ
Can ShopMill on a SINUMERIK 840D call tools by T-number?
The evidence confirms tool-name calls on the reported C800U but does not identify a parameter that enables numeric calls. Treat parameter-based conversion as unverified until the machine-specific documentation or OEM procedure confirms it.
Can I name a ShopMill tool T61 to keep legacy programs working?
Using the T-number as the tool name is the supported compatibility workaround in the available evidence. Verify that T61 maps to the intended tool record, fixed pocket, and measured geometry before running production.
How do I distinguish several 2 mm cutters in a full magazine?
Record geometry in the tool list, including the identified corner-radius variants of 0.2, 0.3, and 0.4. Maintain a verified mapping from each legacy reference to the descriptive tool record and fixed pocket.