Optimising CNC Sliding Head Turning for High-Volume Automotive Precision Turned Parts
The Challenge
An automotive component manufacturer required a repeat production run of intricate small-diameter stainless-steel spacer and actuator components. The component featured multiple turned diameters, a narrow central section, cross-drilled features and a tight positional relationship between the machined surfaces. Conventional CNC turning created excessive handling between operations and introduced unnecessary setup time.
The primary challenge was achieving consistent dimensional control across a high-volume batch while maintaining production economics. The component’s slender geometry also created a risk of vibration and tool deflection during machining. With thousands of precision turned parts required, even a small increase in cycle time would have a significant impact on overall production cost and delivery.
The client therefore needed a subcontract manufacturing UK partner capable of combining precision, repeatability and production efficiency without adding multiple external processes.
The Engineered Solution
Strategic Innovations Dundee Ltd approached the component as a complete manufacturing route rather than simply a turning operation. The first step was reviewing the drawing, material specification and feature sequence to identify which operations could be consolidated.
A CNC sliding head turning strategy was selected because the machine architecture provided improved support for the small-diameter workpiece while allowing turning, drilling and milling operations to be performed within a single cycle. This reduced the requirement for transferring components between machines and minimised opportunities for handling variation.
Tool sequencing was developed to establish the critical datum surfaces early in the cycle. Rough turning was followed by controlled finishing passes, with cutting parameters selected to limit tool pressure and reduce deflection through the slender section. The bar-feed configuration also allowed the machine to maintain a consistent process across the production batch.
Live tooling was used for the cross-drilled features, eliminating a secondary drilling operation. Rather than removing the component for separate processing, the feature was machined while the component remained referenced within the sliding-head machine.
Part-off strategy was also reviewed to minimise burr formation and reduce subsequent deburring requirements. Where required, components were passed through a controlled finishing route before inspection and packing.
For CNC machining Scotland customers requiring repeat production, this approach demonstrates the value of selecting equipment around the component geometry rather than forcing a conventional process onto a complex part. Strategic Innovations Dundee Ltd can also combine turning with milling, EDM and finishing operations where a component demands a genuinely multi-process manufacturing route.
Outcome & Operational Impact
In this representative scenario, process optimisation reduced the estimated cycle time from approximately 78 seconds to 52 seconds per component, representing a 33% reduction in machining time. Eliminating the secondary drilling operation also reduced handling and intermediate inspection requirements.
Setup and changeover activity was reduced by approximately 40%, while maintaining a representative finished surface roughness of Ra 1.6 µm on the critical turned surfaces.
The revised manufacturing route provided a shorter production lead time and improved machine utilisation across the batch. Most importantly, the single-cycle approach reduced process transfers while giving the customer one coordinated manufacturing route.
This is where precision engineering Dundee can deliver measurable commercial value: combining machine capability, tooling strategy and production planning to create a more efficient route from bar stock to finished component.
CTA:
Have a complex engineering component or production bottleneck? Send your technical specifications and RFQ straight to the engineering team at Strategic Innovations Dundee Ltd for a comprehensive manufacturing evaluation.
