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4 Axis CNC Software
Advanced 4-axis machining for smoother finishes, better accuracy, and complex rotary parts. Move beyond basic indexing with simultaneous 4-axis toolpaths that reduce repositioning, improve surface quality, and open the door to more complex work.
Move Beyond Basic 4-Axis Indexing
There is a significant difference between 4-axis indexing and advanced simultaneous 4-axis machining — and it shows in your parts.
4 axis CNC software in its most basic form simply rotates the part to a new position, then stops — treating the fourth axis like a repositioning tool. BobCAD-CAM 4 Axis Pro goes further. It programs the A-axis to move continuously and simultaneously with X, Y, and Z, enabling true 4-axis simultaneous machining. The result is smoother surfaces on curved geometry, fewer manual repositioning steps, and more complex parts done in a single setup.
4 Axis Pro Key Capabilities
Every toolpath strategy in 4 Axis Pro is built to help you machine more complex parts with fewer setups and better results.
Simultaneous 4-Axis Machining
Unlike indexing, simultaneous 4-axis machining moves all four axes at the same time. This keeps the tool in continuous contact with curved geometry — producing cleaner cuts, tighter tolerances, and better surface finishes on rotary and cylindrical parts that indexing simply cannot match.
Rotary Toolpath Control
Gain full control over how the tool moves relative to the A-axis. Program wrapping toolpaths around cylindrical stock, control lead/lag angles, and adjust tool orientation throughout the cut — giving you precise command over surface quality and machining strategy on every feature.
Multi-Sided Part Programming
Machine multiple faces of a part without removing it from the fixture. 4 Axis Pro lets you access features on the top, sides, and around the circumference of a part in a single program — reducing setups, improving alignment accuracy, and cutting lead time on complex parts.
Curved Surface Machining
Follow complex curved geometry with tool motion that adapts to the surface rather than approximating it with flat steps. 4 Axis Pro toolpaths maintain consistent scallop height and tool engagement across curved and contoured features — reducing witness lines and hand finishing time.
Reduced Repositioning
Every time you stop to reposition a part, you introduce potential error. 4 Axis Pro minimizes manual repositioning by programming complex geometry in continuous motion — preserving reference points, reducing fixturing changes, and eliminating the alignment risk that comes with multiple setups.
Improved Surface Finish Quality
Smooth, continuous 4-axis motion eliminates the stair-step artifacts that indexing leaves on curved geometry. The tool stays tangent to the surface longer, producing finishes that require less polishing and rework — saving time at the machine and giving your customers a better product.
Who 4 Axis Pro Is Built For
If your shop machines parts with rotary features, curved geometry, or multi-sided requirements, 4 Axis Pro is built for your work.
CNC Job Shops
Win more complex jobs without investing in a 5-axis machine. 4 Axis Pro extends your existing 4-axis setup to handle advanced rotary parts, curved geometry, and multi-sided features — letting you say yes to work your competitors cannot quote.
Aerospace Manufacturers
Precision matters in aerospace. 4 Axis Pro delivers the accuracy and surface quality required for brackets, shafts, housings, and structural components with curved or rotary features — with full machine simulation to verify every move before cutting.
Automotive Part Manufacturers
Machine performance parts, shafts, pulleys, and rotary components faster with simultaneous 4-axis toolpaths. Reduce setup time on high-mix automotive parts and hold tighter tolerances on rotational geometry that requires continuous motion to finish correctly.
Mold & Pattern Shops
Machine curved core and cavity features, round die components, and pattern geometry with smooth simultaneous motion. 4 Axis Pro helps mold shops reduce hand finishing by delivering better surface quality directly off the machine.
Cylindrical & Rotary Part Shops
Any shop machining cylinders, barrels, rollers, cam lobes, or wrapped features will benefit immediately from 4 Axis Pro. Wrapping toolpaths follow the cylinder surface without approximation — producing accurate geometry that flat-axis programming cannot replicate.
Shops Machining Complex Multi-Sided Parts
If your parts have features on multiple sides that require precise angular positioning, 4 Axis Pro eliminates manual re-fixturing. Program all faces in a single operation, preserve your datum, and reduce alignment errors that come with moving parts between setups.
Why 4 Axis Pro Matters for Your Shop
The operational advantages of advanced 4-axis machining directly impact your shop’s throughput, accuracy, and competitive position.
Less Setup Time
Simultaneous 4-axis motion lets you complete more features without removing and repositioning the part. Fewer setups means less time at the vise, less fixturing overhead, and a faster path from raw stock to finished part — directly improving machine utilization.
Fewer Manual Adjustments
When your CAM software handles rotary motion automatically, your programmers spend less time manually calculating approach angles and debugging motion conflicts. 4 Axis Pro handles the geometry — you focus on the part.
Better Surface Finish Off the Machine
Continuous tool motion means less stair-stepping on curved features. Parts that used to require polishing after machining can often come off the machine ready for inspection — saving labor and shortening delivery time.
More Complex Jobs in Your Wheelhouse
When you can machine cylindrical parts, multi-sided components, and complex rotary geometry on your existing 4-axis machine, you expand the work you can quote and win — without adding new equipment.
Higher Machining Efficiency
Advanced toolpath strategies in 4 Axis Pro are optimized for continuous engagement, consistent chip load, and reduced air cutting. The result is shorter cycle times, longer tool life, and lower cost per part on complex rotary work.
Improved Accuracy & Consistency
Every manual reposition introduces potential alignment error. By reducing the number of times you pick up and re-locate a part, 4 Axis Pro helps your shop hold tighter tolerances across a full run — batch after batch, without cumulative re-fixturing error.
Watch: 4 Axis Pro in Action
Watch how BobCAD-CAM 4 Axis Pro helps programmers move beyond basic indexing into advanced 4-axis CNC machining.
4 Axis Pro — Common Questions
Quick answers to help you evaluate whether 4 Axis Pro is the right upgrade for your shop.
Frequently Asked Questions
What is the difference between 4-axis indexing and simultaneous 4-axis machining? Expand/Collapse
Indexing rotates the part to a fixed position, locks the A-axis, and then machines with standard 3-axis motion. Simultaneous 4-axis machining moves X, Y, Z, and A at the same time — keeping the tool in continuous contact with curved or rotary geometry. The result is smoother surfaces, more complex features, and fewer setups.
Do I need a new machine to use 4 Axis Pro? Expand/Collapse
No. 4 Axis Pro works with your existing 4-axis CNC machine and rotary table. You simply need a machine controller that supports simultaneous 4-axis G-code output, which most modern 4-axis machines do. A BobCAD-CAM specialist can confirm compatibility with your specific machine and post processor.
How does 4 Axis Pro differ from the standard 4-axis module? Expand/Collapse
The standard 4-axis module handles indexing — positioning the part at defined rotary angles and then running 3-axis toolpaths. 4 Axis Pro adds true simultaneous 4-axis motion: rotary wrapping toolpaths, continuous A-axis engagement, advanced surface-following strategies, and the ability to machine complex curved and multi-sided parts in a single operation.
What types of parts benefit most from 4 Axis Pro? Expand/Collapse
Parts with cylindrical geometry, wrapped features, curved surfaces, cam profiles, rotary grooves, and multi-sided features benefit most. Examples include shafts with helical flutes, barrels with wrapped engravings, cam lobes, and any part where the key geometry wraps around or follows a rotational axis.
Can I see 4 Axis Pro demonstrated on my specific part? Expand/Collapse
Yes. BobCAD-CAM offers free, no-obligation demonstrations tailored to your specific parts and machine. Share a sample file or describe the geometry and a CAM specialist will walk you through how 4 Axis Pro handles it — including toolpath strategy, simulation, and post processor output for your machine.
Explore Related BobCAD-CAM Solutions
4 Axis Pro is part of a full range of CNC programming modules for every machine type and workflow.
Multi-Axis CAM (4 & 5 Axis)
Step up to full 5-axis simultaneous machining with trimming, swarf, morphing, and high-speed multi-axis roughing toolpaths for the most complex geometry.
4th Axis Standard
Already using a 4th axis rotary table for indexing work? See what the standard 4th axis module covers and how 4 Axis Pro extends beyond it.
Mill-Turn CAM
Combine turning and live-tool milling operations in a single setup. Mill-Turn is ideal for shops running complex rotational parts on lathe machines with driven tooling.
Ready to Advance Your 4-Axis Machining?
Speak with a BobCAD-CAM specialist who understands 4-axis machining. We will show you exactly how 4 Axis Pro handles your specific parts, geometry, and machine — live, one-on-one, at no cost.