| 摘要 |
<p>This invention relates to a portable hand complex machine that can generate a translating movement, a rotary-translating movement or a rotary movement depending on the desired function and that canbe used for acting tools performing high quality works of: chiseling, cutting (sawing), drilling, screwing, unscrewing or other similar works. The technical problem solved by the invention is to offer a portable tool that can generate certain movements, allowing to regulate the axial advance of the tool as a function of the material in which the tool works, independently of the operator's action. The machine according to the invention may be put into motion by an electric motor (2) and a reducing gear (3) fastened on an element of a movable cross joint and a pair of axial cams: a fixed cam (7) mounted on a support piece (5) and a movable cam (8) receiving a translating motion which is transmitted to an intermediate piece (13) having multiple functions. In order to obtain a rotary-translating motion, the second end of the multifunctional axle (17) has a number of external grooves that engage the internal grooves of said support piece (5). The machine has a helical spring (16) controlled by screwing and unscrewing a nut (15) on the intermediate piece (13) for retaking the work cycle.</p> |
