Screw-Threads Articles TRIZ Cases

Rotating inner and outer rings form threads in thin can sidewalls, enabling resealable aluminum containers without sacrificing strength.

An axial or spiral oil groove forms an oil film between the rolling die and main spindle, preventing heat-driven sticking and easing die removal.

Cooling fluid circulated through integrated working channels limits heat expansion in thread rolling, improving precision and machine life.

A leather-like structured rolling jaw surface improves grip during thread rolling while reducing die wear and preserving screw shaft strength.

A scraping port and extended collector remove cutting fluid from the linking unit, keeping the base clean and protecting lubricating fluid.

A heated annular blank is rolled into a seamless rope drum shell with embossed grooves, improving stress distribution for large, high-load winches.

Segmented rolling plates form threads, chip-relief slots, and ribs in one step to cut screwing resistance and avoid weakening the fastener.

An elliptical thread root and matched cold rolling process cut root stress concentration and extend rotary shouldered connection fatigue life.

Rolling an annular blank creates a seamless rope drum shell with embossed grooves, enabling larger winch diameters, thicker walls, and better pressure resistance.

Rolled male threads on deformed rebar preserve proof stress through work hardening while avoiding large diameter preprocessing and grout filling.

A radially movable holding member stabilizes the can body during neck forming, preventing tilt, deformation, and cap sealing errors.

A partially disengaging clutch lets the thread rolling head reverse out automatically, reducing thread damage and manual re-locking.

Odd-even rolling wheel groups pre-roll non-round steel pipes before thread forming, avoiding cutting complexity and improving thread yield.

Controlled TFE fluoro(alkyl vinyl ether) copolymer composition and Ni-plated molding reduce ion leaching while improving ozone and wear resistance.

A sacrificial frangible section lets the mold strap break before attachment bolts shear, enabling visible failure and easy replacement.

High melt flow can weaken ozone resistance; this TFE copolymer controls composition and fluorine-ion dissolution to limit cracking in ozone-rich environments.

Movable mould sectors progressively reduce the forming region to compact variable-size doses into curved objects with uniform properties.

A movable half-mould and plunger sequence compresses plastic into complex holed shapes while limiting unwanted films and mould wear.

Segmented injection units fill cavities simultaneously, resolving thickness non-uniformity while maintaining short production cycle times.

A composite bone screw uses localized radiopaque markers to provide clear surgical visibility without widespread imaging artifacts.

Automated sensors detect forming roller thread positions to resolve manual phasing bottlenecks and improve setup efficiency.

A thread rolling head integrates an energy generation device to harvest electrical power from roller movement and thermal sources.

Segmented tie rod connections allow roller substitution without disassembly, reducing downtime and labor costs.

Offset identical shaping rollers reduce inventory costs and wear while maintaining adaptability for varied workpiece diameters.

A dosing nozzle deposits molten plastic with 20 to 40 percent mass above a reference plane to prevent inconsistent material distribution and blocked orifices.

A motor-driven screw component secures threaded inserts in molds through combined translational and rotational movements.

Pre-formed rigid fiber inserts prevent uncontrolled movement during injection molding, ensuring accurate mechanical reinforcement in medical implants.

Dual-diameter rolling jaws profile thin-walled tubes continuously, preventing lateral pressure deformation while maintaining manufacturing precision.

A stripper plate drive system coordinates axial and rotational core pin motion to release molded workpieces with internal undercuts.

Vibrations liquefy thermoplastics flowing into undercuts, resolving adhesive reliability issues while minimizing heat penetration.

Suction cavities hold nuts during injection molding, eliminating thermal pressing and reducing labor costs.