2-Die 2-Blow Cold Heading Machine configuration separates bolt forming into two independent die stations, enabling deformation to occur in a staged and more controlled manner. Material is first gathered and partially shaped in the initial die cavity, then transferred to a second die where final head formation is completed with improved geometry definition.
Dividing shaping work across two dies helps reduce concentrated impact stress and allows better control of material flow direction. Gradual redistribution supports enhanced head symmetry, smoother structural transitions, and more predictable dimensional consistency compared with single-die systems.
This configuration is often selected when bolt drawings demand improved tolerance control or when production lines are upgrading from entry-level equipment to achieve better forming stability. Balanced structural complexity makes it suitable for medium to high volume manufacturing environments where precision and operational reliability must coexist.
TAICHUANG supplies 2-Die 2-Blow cold heading machine solutions as part of its structured cold forming equipment range, supporting fastener producers seeking improved geometry control without moving into high-stage multi-die systems.
|
Model |
Stations Quantity/No |
Forming Force/kgs |
Max.Cut-off Diameter/mm |
Max.Cut-off Length/mm |
Capacity/pcs/min |
P.K.O Stroke/mm |
K.O Stroke/mm |
Stroke/mm |
Cut-off Die Diameter/mm |
|
YH5-2S |
2 |
38000 |
Φ7.0 |
60 |
110-130 |
16 |
70 |
90 |
Φ19*38 |
|
Model |
Main Die Diameter/mm |
Punch Die Diameter/mm |
Cutter Size/mm |
Normal Size of Bolt/mm |
Shank Length of Blank/mm |
Main Motor Power/kw |
Volume(L*W*H)/m |
Weight/kg |
|
YH5-2S |
Φ46*95*2 |
Φ31*75*2 |
10*32*80 |
Φ2-7 |
5-50 |
Level 8 - 3kw |
2.50*1.20*1.15 |
1850 |
Die separation changes how material flows during the cold heading cycle.
Initial deformation is handled in the first die station, where material gathering and preliminary shaping occur. Transfer to the second die allows controlled refinement before final head completion.
Staging deformation across two cavities reduces sudden stress concentration and improves structural symmetry. Balanced force progression contributes to more predictable shaping behavior during continuous runs.
Dual die coordination enables clearer definition of head transitions and shoulder areas.
Material flow can be guided more gradually, which helps maintain:
Improved head concentricity
More consistent thickness distribution
Reduced surface deformation marks
Stable dimensional repeatability
Gradual shaping becomes especially valuable when bolt drawings include subtle geometric variations.
Additional die station improves distribution of forming load rather than concentrating impact energy in one cavity. This contributes to:
Reduced deformation shock
Improved tool life balance
Better batch-to-batch uniformity
More controlled forming rhythm
Production environments upgrading from entry-level cold heading equipment often adopt this configuration for improved process stability.
Suitable for:
Automotive bolts requiring tighter dimensional control
Structural fasteners with refined head transitions
Medium-complexity flange bolts
Industrial bolts demanding improved geometric consistency
Configuration bridges the gap between simple single-die systems and multi-die high-complexity machines.
Selection of a 2-Die 2-Blow cold heading machine becomes relevant when:
Head geometry demands more controlled deformation
Single-die systems show repeatability limitations
Material strength requires gradual force application
Production volume justifies moderate structural upgrade
Complex fasteners may require additional die or blow stages, but dual-die systems provide a practical balance between forming precision and equipment investment.
1. What practical improvement does the second die provide?
Second die allows staged deformation, improving head symmetry and dimensional repeatability compared with single-die layouts.
2. Does the machine significantly increase tooling cost?
Tooling increases moderately, but better geometry control and reduced forming stress often improve overall process efficiency.
3. Is this configuration suitable for automotive-grade bolts?
Dual-die staged forming supports improved dimensional control, which aligns well with many automotive fastener requirements.
4. How does deformation distribution improve material integrity?
Spreading shaping across two cavities reduces sudden impact concentration, helping preserve internal structure.
5. Can this system operate in continuous production?
Stable die alignment and coordinated blow timing allow reliable operation in medium to high-volume production environments.
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