Production Machining

End rolling that rolls on and rolls off — and why that distinction matters for thread quality.

Thread rolling is a cold-forming process that displaces material rather than cutting it, producing stronger tooth forms, improved surface finish, and greater precision. End rolling applies this through purely linear motion onto a rotating part.

CJWinter's 193 end-rolling attachment departs from conventional designs in one critical way: rather than springing open to clear the thread before retracting, it rolls on to create the thread, then reverses as the unit rolls off.

That difference has measurable implications:

- The roll-on/roll-off sequence creates a double-burnish, producing higher-quality thread profiles and finishes
- Eliminating the spring-open mechanism removes internal components prone to damage on hard materials
- The result is a 15-lb unit versus the 40-lb conventional alternative, reducing spindle wear over time
- Reversible thread rolls extend service life by approximately twice

Air-Way Manufacturing, the largest independent hydraulic fitting manufacturer in the United States, is currently evaluating the 193 heads on its Buffoli CNC rotary transfer machines.

Read the full piece for technical and application detail. https://www.productionmachining.com/articles/the-value-of-bidirectional-thread-rolling

Coolant delivery at the cutting edge — without external nozzles or system modifications.

Haimer's Cool-Flash cooling system integrates slot geometry directly into shrink-fit toolholder bodies to direct coolant along the tool shank, through the chip flute, and into the cutting zone. The system operates at standard machine tool pressures of approximately 20 bar, requiring no changes to existing coolant infrastructure.

In moldmaking environments — where deep cavities, long-reach tools, and hardened materials are routine — chip accumulation and localized heat buildup can compromise surface finish and dimensional accuracy. Cool-Flash addresses these conditions at the toolholder level.

Key design considerations include:

- High runout accuracy maintained without introducing additional unbalance
- Toolholder clearance preserved at high spindle speeds
- Coverage for tool diameters from 6–50 mm across finishing and roughing operations

Developed from Haimer's Cool Jet system, Cool-Flash represents a further refinement in integrated coolant management for precision machining. Read the full piece for technical details. https://www.productionmachining.com/products/haimer-cooling-system-improves-coolant-delivery-for-shrink-fit-chuck-applications-3

Mental health in manufacturing follows the same logic as machining precision: a small error early in the process creates a big problem at the end.

The signs are often subtle — a quiet employee, a frayed temper, a coworker who no longer joins the group for lunch. Those are your thousandths of an inch. Miss them long enough, and the operation breaks down.

Depression, anxiety, and burnout are estimated to cost U.S. employers more than $200 billion annually. Yet research consistently shows the single most powerful intervention is not a wellness app or a poster in the break room. It is a real conversation.

A five-step framework for having that conversation:

- Notice behavioral changes before they compound
- Choose a low-pressure moment and setting
- Lead with connection, not correction
- Ask one good question, then listen without fixing
- Follow up — mental health conversations are not one-and-done

Great machinists do not walk past a machine that is running wrong. The same standard applies to the people around you.

Read the full piece to explore each step in depth. https://www.productionmachining.com/articles/be-the-can-opener-at-your-machine-shop