| 摘要 |
<p>A method for manufacturing a combination wrench includes pressing a wrench material piece (20) in a sealed mold (90) at a temperature without generating carbon scale to form a semifinished product (40) including first and second driving end portions (41, 42) and a handle (43) interconnected between the first and second driving end portions (41, 42). The first and second driving end portions (41, 42) of the wrench semifinished product (40) are processed to form a combination wrench (40') having a box end and an open end. The wrench material piece (20) can be obtained by shearing a material plate (10).</p> |
