2-Die 3-Blow cold heading machine configuration integrates dual die progression with an additional impact stage to refine material redistribution during bolt forming. Initial shaping occurs in the first die, followed by controlled transitional refinement and final head completion within the second die through coordinated blow sequencing.
Increasing blow count while maintaining two die stations enables improved deformation layering without significantly enlarging machine structure. Additional impact stage provides intermediate correction capability before final geometry stabilization, enhancing head symmetry and dimensional consistency.
Compared with 2-Die 2-Blow systems, this configuration offers greater forming depth and improved volume management. At the same time, it remains structurally simpler than three-die machines, making it a practical intermediate solution for manufacturers upgrading forming precision.
TAICHUANG supplies 2-Die 3-Blow cold heading machine solutions for fastener producers seeking enhanced geometry control within a balanced equipment framework.
|
Model |
Max. Blank Diameter/mm |
Stroke/mm |
Capacity/pcs/min |
K.O Stroke/mm |
P.K.O Stroke/mm |
Main Die Diameter/mm |
Main Die Diameter/mm |
Punch Die Diameter/mm |
Cut-off Die Diameter/mm |
|
YH2310 |
Φ5.0 |
60 |
90-110 |
45/40 |
10 |
Φ26*60 |
Φ32*60 |
Φ24*60*3 |
Φ15*30 |
|
YH2315 |
Φ7.0 |
100 |
60-90 |
70/60 |
15 |
Φ32*100 |
Φ36*100 |
Φ30*75*3 |
Φ20*35 |
|
YH2320 |
Φ9.0 |
120 |
60-80 |
90/80 |
18 |
Φ35*120 |
Φ42*120 |
Φ35*100*3 |
Φ24*40 |
|
YH2325 |
Φ11.0 |
156 |
60-70 |
110/100 |
25 |
Φ45*160 |
Φ55*160 |
Φ40*120*3 |
Φ28*40 |
|
YH2330 |
Φ13.0 |
160 |
50-60 |
120/110 |
25 |
Φ55*160 |
Φ60*160 |
Φ50*120 |
Φ35*50 |
|
YH2340 |
Φ15.0 |
200 |
40-50 |
140/130 |
25 |
Φ65*200 |
Φ75*200 |
Φ60*160 |
Φ45*60 |
|
Model |
Cutter Size/mm |
Normal Size of Bolt/mm |
Shank Length of Blank/mm |
Main Motor Power/kw |
Volume(L*W*H)/m |
Weight/kg |
|
YH2310 |
10*35*72 |
Φ1-5 |
2-30 |
Level 6 - 2.2kw |
1.70*1.10*1.20 |
1300 |
|
YH2315 |
10*35*72 |
Φ2-7 |
2-50 |
Level 6 -2.2kw |
2.30*1.30*1.20 |
2600 |
|
YH2320 |
12*40*77 |
Φ3-9 |
2-70 |
Level 8 -4.0kw |
2.80*1.40*1.60 |
3300 |
|
YH2325 |
12*42*90 |
Φ4-11 |
2-90 |
Level 8 - 5.5kw |
3.80*1.60*1.70 |
5300 |
|
YH2330 |
16*50*115 |
Φ5-13 |
2-100 |
Level 6 - 11kw |
3.80*1.60*1.80 |
8450 |
|
YH2340 |
18*55*125 |
Φ6-15 |
2-120 |
Level 6 -18.5kw |
4.20*1.85*1.70 |
14300 |
Forming sequence typically follows:
• First die – Material gathering and primary shaping
• Second die – Transitional refinement
• Additional blow – Final structural definition
Triple impact progression improves control over:
Head thickness distribution
Transitional shoulder alignment
Concentricity stability
Surface integrity during high deformation
Controlled sequencing reduces abrupt stress accumulation inside the die cavity.
Two-die layout maintains manageable tooling complexity while three-blow sequencing increases shaping flexibility.
The 2-Die 3-Blow Cold Heading Machine is often selected when:
Two-blow systems lack sufficient refinement
Three-die systems exceed current production requirements
Factory space constraints limit multi-die expansion
Improved repeatability is required without major structural overhaul
Balanced architecture supports medium to high volume production environments.
Distributing forming energy across two dies while adding a third impact stage allows smoother force progression.
Resulting operational characteristics include:
Improved dimensional stability
Reduced deformation shock
Better head mass control
Stable batch uniformity over extended runs
Gradual energy distribution assists in forming medium-strength materials with improved geometry definition.
1. What advantage does the third blow provide in a dual-die system?
Additional blow enables intermediate correction and refined head shaping without increasing die count.
2. How does it compare with 3-Die 3-Blow configuration?
2-Die 3-Blow maintains simpler tooling structure while offering improved impact control. Three-die systems provide further segmentation of deformation.
3. Is this configuration suitable for automotive fasteners?
Enhanced deformation control supports improved repeatability, aligning with many automotive bolt requirements.
4. Does it significantly increase mechanical complexity?
Mechanical coordination increases moderately due to added blow, but die layout remains compact.
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