CNC drilling and tapping sequences are among the most repetitive tasks in CAM programming. For example, on a part with fifty tapped holes across three faces, a programmer without automation manually defines spot-drill depths, drill diameters, tap cycles, chamfer passes, and counterbore interpolations for each operation, one hole at a time. Multiply that across a job shop running families of similar parts on rotating shifts, and the time cost becomes a measurable drag on throughput.
SolidCAM’s Hole Wizard Automation eliminates such a sequence by reading hole data directly from the SOLIDWORKS Hole Wizard and generating a complete, editable machining process tree automatically. The workflow covers spot drilling, drilling, tapping, counterboring, chamfering, and multi-axis hole strategies from a single drag-and-drop operation.
The Manual Drilling and Tapping Problem
Manual programming for CNC drilling and tapping is relatively straightforward but remains time-consuming and error-prone due to repetition. Consider, for example, a programmer who has set up a spot drill, drill, and tap cycle correctly two hundred times will eventually enter the wrong depth on the two hundred and first.
Such a problem compounds in environments where multiple programmers handle the same family of parts. Without a standardized process, one programmer uses a half-inch spot drill, another uses a quarter-inch, and the shop ends up with inconsistent chamfer sizes across production runs. Feeds and speeds vary by habit rather than by material data. The deeper problem is that process knowledge stays with individuals rather than living in the CAM system.
This is the problem that structured CNC drilling and tapping automation is designed to solve, not by removing programmer control, but by moving the repetitive decisions into a governed, editable database that the shop owns and refines over time.
From SOLIDWORKS Hole Wizard to Automated CNC Drilling and Tapping
The foundation of SolidCAM’s automation is the data that already exists in the SOLIDWORKS Hole Wizard. When holes are created using the Hole Wizard rather than simple cut extrudes, every hole carries metadata including type, nominal diameter, depth, thread specification, countersink angle, counterbore diameter, and counterbore depth. Reading hole data directly from the SOLIDWORKS Hole Wizard is possible because SolidCAM operates as a fully integrated single-window environment within the CAD platform.
The workflow starts with a drag-and-drop. The programmer drags the Hole Wizard icon from the SolidCAM interface onto a selected face of the model. SolidCAM immediately recognizes every Hole Wizard feature on the face and builds a complete process tree that covers all required operations: spot drilling, drilling, tapping, counterboring, and chamfering. Geometry is selected automatically, levels and depths are defined from the model data, and tools are assigned from the preset template.
What would normally be a thirty-minute manual programming sequence for a complex hole pattern is reduced to under 60 seconds. The result is still fully editable at every step, so the programmer retains complete control over the output without having to generate it from scratch.
SolidCAM reads SOLIDWORKS Hole Wizard metadata to generate complete CNC drilling and tapping process trees automatically, including spot drilling, drilling, tapping, counterboring, and chamfering operations from a single drag-and-drop action.
Automated Spot Drilling and Chamfering Control
Spot drilling is where many manual CNC drilling and tapping sequences introduce inconsistency. The reason comes down to depth control. The spot drill depth determines chamfer size, and the size needs to match the finished part requirement. In practice, when programmers set spot drill depth by habit rather than calculation, the result varies.
SolidCAM’s Hole Wizard automation handles spot drill depth as a configurable parameter within the process database. The default template may call for a specific depth based on hole diameter, but the programmer can open the base operation, adjust the depth to create a precisely sized chamfer, and save that setting back to the database. The next time the same hole type is programmed, the correct depth is applied automatically.
The same depth control logic applies to chamfer passes added after drilling or counterboring. More specifically, rather than manually creating a separate chamfering operation, the Hole Wizard process can include a final spot drill pass at a defined depth to produce the chamfer, with no additional programmer input required.
SolidCAM Hole Wizard automation controls spot drill depth as a database-level parameter, producing consistent chamfer sizes across hole patterns without manual depth calculation at the operation level.
Tapping: Cut Tap, Roll Form, and Thread Milling Support
Tapping as part of a CNC drilling and tapping workflow involves more than selecting a tap and setting a feed rate. Specifically, the feed rate must be precisely synchronized with the spindle speed based on the thread pitch. Further, dwell values at the bottom of the hole affect thread quality and tap life. The difference between cut tapping and roll form tapping changes the cycle structure entirely, and some materials require a specific approach and retract behaviors to prevent tap breakage.
SolidCAM’s Hole Wizard database handles all of these variables as configurable parameters. A shop that runs both cut taps and roll form taps on different materials can build separate Hole Wizard processes for each scenario. The programmer then selects the appropriate process for the job rather than manually reconfiguring tapping parameters for every new part.
Feed and speed values, dwell settings, coolant activation, and cycle type are all stored at the database level. As a result, modifications made to one process carry forward to every future part that uses it, so process improvements compound over time rather than being re-entered job by job.
SolidCAM supports cut tapping, roll form tapping, and thread milling within the Hole Wizard automation framework, with feed-to-speed synchronization and dwell values managed at the database level rather than configured per operation, so every future part inherits the same verified process without additional setup.
Counterboring and Complex Hole Types With SolidCAM
Counterbored holes require a different operation sequence than simple drilled and tapped holes. A typical counterbore sequence in a CNC drilling and tapping workflow includes:
- Spot drill to establish the hole location and starting chamfer
- Drill to depth for the through-hole or blind hole body
- Circular interpolation to cut the counterbore diameter to the specified depth
- Final chamfering pass at the counterbore entry to clean up the edge
Each step has its own depth, feed rate, and tool assignment.
SolidCAM builds such a sequence automatically from the counterbore data in the SOLIDWORKS Hole Wizard feature. The counterbore diameter and depth are taken directly from the model, so the programmer does not need to measure or manually enter them. The circular interpolation operation is generated with a correct diameter, and the chamfer pass is included if the process template calls for it.
For harder materials where each step in the sequence needs tighter control, the generated operations can be modified individually without affecting the rest of the process tree. The automation generates the starting point; the programmer refines it where the material or application requires it.
SolidCAM generates complete counterbore sequences, including spot drilling, drilling, circular interpolation, and chamfering, automatically from SOLIDWORKS Hole Wizard counterbore feature data, with each operation independently editable.
Multi-Axis CNC Drilling and Tapping on Rotated Faces
Parts with holes on multiple faces, angled features, or rotated datums require coordinate system management before any drilling or tapping can be programmed. In a manual workflow, each face requires its own work coordinate system setup, its own hole selection, and its own operation tree. On a part with holes on four or five faces, that is four or five complete manual programming sequences for what is functionally the same process.
SolidCAM handles multi-axis CNC drilling and tapping through MAC position assignment within the Hole Wizard workflow. The programmer creates additional MAC positions for each required face orientation and associates those positions with the corresponding model faces. The Hole Wizard automation then applies the same process logic to each orientation, generating drilling, tapping, and counterboring operations across all indexed faces without rebuilding the process from scratch for each one.
For indexed 4-axis and 5-axis setups, this approach means a part with holes on six faces can be fully programmed for all hole operations in the same time it would take to program a single face manually. The same MAC position logic applies to mill-turn parts, where multiple machining channels and rotated axes require the same kind of coordinated face-by-face setup.
Customizing the Hole Wizard Database for Your Shop
The Hole Wizard process operates as an adaptable framework, shipping with a default database that shops can modify to suit their specific needs.
Modifications take effect at the base operation level, so any future job that references that operation automatically inherits the change. A shop that standardizes on half-inch spot drills rather than quarter-inch spot drills opens the relevant base operation, reassigns the tool, and saves the change back to the database. From that point forward, every Hole Wizard operation that references that hole type uses the half-inch spot drill without any further input from the programmer.
The same customization logic applies to feeds and speeds, dwell values, coolant settings, and cycle types. Over time, a shop builds a Hole Wizard database that reflects its actual practices rather than generic defaults. SolidCAM’s training resources cover how to set up and expand this database for your specific tooling and material standards. That database becomes institutional knowledge stored in the CAM system rather than in the heads of individual programmers.
The table below summarizes parameters that can be customized at the database level and the workflow impact of each such parameter:
| Parameter | What It Controls | Workflow Impact |
|---|---|---|
| Spot drill tool assignment | Tool size and geometry per hole diameter range | Consistent chamfer sizing across all programmers |
| Tap cycle type | Cut tap vs. roll form tap vs. thread mill | Process selection by material without per-job reconfiguration |
| Feed and speed values | Cutting parameters per hole type and material | Repeatable cutting performance across shifts |
| Dwell settings | Pause duration at hole bottom | Thread quality and tap life consistency |
| Chamfer depth | Spot drill depth for entry chamfer generation | Uniform chamfer size without manual depth calculation |
| Coolant activation | Coolant on or off per operation type | Default coolant behavior without per-operation setup |
SolidCAM’s Hole Wizard database stores tool assignments, tap cycle types, feed and speed values, dwell settings, chamfer depths, and coolant parameters as shop-level defaults, converting process improvements into reusable logic that applies automatically to future parts.
Part Configurations and Design Synchronization
Shops that run part families in SOLIDWORKS, where multiple configurations share the same base geometry but differ in hole sizes or patterns, can keep Hole Wizard automation synchronized with the active configuration using SolidCAM’s “Synchronize with Design Model” setting.
When “Synchronize with Design Model” is enabled and the programmer switches to a different configuration, SolidCAM adjusts the Hole Wizard-generated operations to match the new hole data. Geometry and depth references update to the active configuration rather than remaining tied to the configuration that was active when the process was first generated. As a result, full reprogramming is not required for each variant in the family.
Such a configuration-aware workflow is particularly useful for bolt-pattern variations, size families, and parts that share a common machining strategy across multiple configurations with different fastener specifications.
Eliminate Manual CNC Drilling and Tapping Sequences
Manual CNC drilling and tapping programming is not going away on its own. Without a structured automation workflow, every new part with a hole pattern requires the same sequence of manual decisions, the same risk of depth-entry errors, and the same level of inconsistency among programmers. The time cost is real, and it recurs on every job.
SolidCAM’s Hole Wizard automation turns that recurring cost into a one-time database investment. Shops programming 10 or more hole-heavy parts per month can reclaim an estimated 15–20 hours of CAM programming time monthly, which can compound further as the process database matures and covers more hole types.
If your shop programs CNC drilling and tapping sequences manually today, request a demo to see how SolidCAM’s Hole Wizard automation handles hole-heavy parts from drag-and-drop recognition through to verified NC output.
