Structural Parameters Optimization of the Steel Bar Straightening Machine Based on the PSO Algorithm

Table 4

The optimization range of the structure parameter of the variable roller spacing straightening machine.

Roller spacing (mm)	t1	t2	t3	t4	t5	t6	t7	t8	t9	t10	t11	t12
Upper limit	108	108	108	108	108	89	89	89	89	89	89	89
Lower limit	80	80	80	80	80	56	56	56	56	56	56	56
Roller diameter (mm)	D1	D2	D3	D4	D 5	D6	D7	D8	D9	D10	D11	D12	D13
Upper limit	185	185	185	185	185	130	130	130	130	130	130	130	130
Lower limit	160	160	160	160	160	112	112	112	112	112	112	112	112