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NUT COLD FORMING MACHINES


COLD HEADERS FOR NUTS

cold headers for nuts RNFR-24B5S
Cold heading machine for nuts RNFR-24B5S (with tool changer)
cold headers for nuts  RNFR-19B5S
Cold headers for nuts RNFR-19B5S


nut upsetting stages on the RNFR series machine

For the production of M6 and M8 nuts, five-position cold heading machines are used. For the production of M10 nuts and more, it is recommended to use six-position cold heading machines. This recommendation is based on the quality of the metal. The technology for the production of a nut from low-carbon steel on six-position presses allows to reduce the requirements for the quality of the metal and to obtain the final product of very high quality. At the same time, the consumption coefficient for metal is reduced by reducing the size of the internal die cut (otter). If the six-position machine is equipped with a transfer mechanism that allows the nut to be stamped with several turns, the result will compensate for the costs.

cold heading machines in the production workshop


cold heading machines in the production workshop


The six-position cold heading machine is a universal solution for the production of all groups of nuts with improved mechanical properties, excellent quality and relatively low production costs. It is important to note that the use of cold heading presses with increased positioning allows solving the problems of producing both low and high nuts, as well as nuts with a reduced turnkey size. Another advantage of six-station upsetting machines is the ability to produce special products that can give a company the freedom to expand its product range. These products include spanner wrench heads, spark plug skirts for internal combustion engines, and much more.

Why do so many partners from around the world choose our equipment?

Taiwan Metiz Alliance provides equipment for nuts cold heading with 5th and 6th positional forging stations. The equipment of the new generation provides a quick products heading process. The chuck of blank feeding can be moved rectilinearly or rotated 180 degrees, depending on the requirements and characteristics for the products. Powerful S-CAM cutting mechanism is driven directly by the crankshaft, provides accurate and consistent process of cold heading. Main sliding guide of the press provides excellent stability and ensures precise linear advancement of the blank through the cutting stamps and matrices. The equipment produces nuts of cut diameter from M5 to M45. Machines are equipped with pneumatic clutch and brake systems, speed adjustment is controlled by an inverter. More than 3,000 pieces of equipment of this category is used in production worldwide.

nut cold heading machine RNFR-32B5S series

Nut cold heading machine RNFR-32B5S series



Features of Cold Heading Machines for the Production of Nuts

Our cold heading equipment for the manufacture of nuts has a number of features:

  • the crankshaft with the bushing is connected to the coolant supply system at high pressure, which increases the service life of the working parts of the heading machine;
  • the equipment is stopped by a pneumatic brake with a clutch. The pneumatic clutch and braking device allows the cold heading machine to be started in the setting modes, single stroke and continuous operation without damaging the electrical parts of the machine and the engine;
  • P.K.O. system
  • programmable operator interface displays production information, produces production counting and tool life monitoring, simplifies production monitoring of equipment condition;
  • Precise linear wire feeder with advantages over roller mechanisms: no wire slippage and no scratches or transverse imprints, increased feed accuracy, the ability to feed short and long workpieces, and the ability to feed soft materials without damaging or deforming their surface. The linear feed system also provides greater accuracy of cut workpieces by eliminating the brake and clutch problems of a traditional feed mechanism;
  • speed change is controlled by an inverter;
  • fault detector: in the presence of deviations in the operation of the equipment, an audible alarm mechanism is triggered, notifying the operator of possible problems.


RNFR-24B5S Nut Former Operator Panel

RNFR-24B5S Nut Former Operator Panel


Operator for setting up a cold heading machine RNFR-32B5S

Operator for setting up a cold heading machine RNFR-32B5S


Wire feed unit and straightening device of RNFR-24B5S nut upsetting machine

Wire feed unit and straightening device of RNFR-24B5S nut upsetting machine


RNFR-32B5S PKO cam with 3-shift stroke adjustment

RNFR-32B5S PKO cam with 3-shift stroke adjustment. Digital gauge for punch wedge adjustment.


transfer mechanism of the workpieces between positions

The transfer mechanism of the workpieces between positions on the RNFR-32B5S cold heading machine for the production of nuts moves straight or rotates 180 degrees depending on the requirement.


RNFR-24B5S KO and stopper adjustment

KO & stopper adjustment by 0.01mm. Motorized KO adjustment.


cutting mechanism of cold heading machine cold heading die block ejectors

The powerful S-CAM cut-off mechanism is driven by the crankshaft and moves horizontally.


cold header machine main frame

The frame provides absolute stability and straight forward process of heading


ejectors of the die block of the cold heading machine

Ejection device. Cold heading machines for nuts are equipped with a die block. Retractable rods are easy to install from the die side for easy tool change.


cut-off mechanism and pneumatic cylinders cut-off mechanism and pneumatic cylinders

Large presses are equipped with a series of RNF cutting mechanism and pneumatic cylinders. Springs are isolated on series RNF-24B equipment of smaller size.




brass bushings

Aluminum alloy bushing for the crank & brass lining for the ram.


отрезной механизм и пневматические цилиндры станка для гаек

Large presses are equipped with a series of RNF cutting mechanism and pneumatic cylinders. Springs are isolated on series RNF-24B equipment of smaller size.


RFNR-24B5S transmission mechanisms cutter mechanism

Transmission mechanisms are moved to the opposite side of operation stand to create more moving room and better view angle for operators.


RFNR-24B5S machine transmission mechanisms RFNR-24B5S wire rod feed
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Technical Specification of Cold Forming Equipment for Nuts

Model of Nut Former Number of Forging Stations Nut parts specification
Product Size Output
RNF Series Nut Former 5 / 6 M5 - M30 48-360 pcs / min
RNL Series Long Stroke Nut Former M8×25 - M32×85,
Ø8×16 - Ø46×120
45-200 pcs / min
RNFL Series Long Stroke Nut Former M8×25 - M32×85 45-200 pcs / min
RNFR Series Nut Former M5 - M30 45-450 pcs / min
RNFRL Series Long Stroke Nut Former 6 Ø8×20 - Ø42×100 50-200 pcs / min
RNFP Series Nut Former 5 / 6 M5 - M30 45-380 pcs / min
RNFPL Series Long Stroke Nut Former Ø8×20 - Ø46×100 45-200 pcs / min
RPF Series Long Nut Parts Former Ø8×20 - Ø44×100 45-180 pcs / min
RNP Series Nut Parts Former 5 / 6 / 7 Ø14 - Ø62 55-255 pcs / min
RLS Series Station Long Nut Former 5 / 6 M5 - M30 48-280 pcs / min



Operation video of multi-station cold heading machines for nut production




Products manufactured on Nut Formers

The multi-station cold heading equipment can produce a wide range of nuts and nut products in sizes M5, M6, M8, M10, M12, M16, M18, M22, M24, M27, M30, M32 with a productivity from 45 to 450 products per minute:

cold heading nutErickson nuthex nutelongated connecting nuthexagonal toothed nut with collarhex nut brasssquare nuthexagonal cap nutwing nuthigh castellated nutlock collar nutfurniture cut-in nutlow hex nutself-locking nutcastellated nut low
nut heading

These products are produced on RNF Series equipment with 5, 6-position forging stations.
Product Size from M5 to M30.


nut forming

These products are produced on RNL series equipment with 5, 6- position forging stations.
Product Size from M5 to M30.




Manufacturing Facility with installed Nut Formers

cold heading machines in the production workshop cold heading machines in the production workshop cold heading machines in the production workshop cold heading machines in the production workshop cold heading machines in the production workshop cold heading machines in the production workshop cold heading machines in the production workshop cold heading machines in the production workshop cold heading machines in the production workshop cold heading machines in the production workshop



Machine Tool for cold heading machines

Taiwan Metiz Alliance supplies a full range of tools for cold heading machines for the production of nuts: a wide range of punches and dies for upsetting, carbide tools for cold heading (knives, cut-off sleeves, carbide inserts and cores), ejectors, pushers, cut-off knives, sleeves, clips, bushings, parts according to customer drawings (complex tools and auxiliary equipment), machine parts (rollers and prisms of wire feeders, holders of dies and punches, wear parts and spare parts for various types of equipment).




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