Bench drilling machines (such as NA-10, NA-12), as a rule, is at any station of young technicians in every school workshop. There are some in our school (I work as a teacher). And once a pupil of the 6th class when drilling holes in small parts dropped it in a vise. Began to turn them over to get the detail, didn’t hold, and the grip fell to the floor. Only by sheer luck that this incident was closed with a foot injury, although the consequences for the child could be much more serious. I think that such incidents are not uncommon: in school workshops and at the premises of technical circles often seen on the floor next to astelinastelin press dents from the clutches of the fallen.
I propose a simple device will save both students, and teachers, and managers of technical circles from such troubles.
Of course, you can just fix the vise on the machine table. And it’s not bad when testing a large batch of parts. But, unfortunately, this option is in the technical circles is extremely rare. Often it is necessary in one part to drill in different places, a few holes, and move the vise on the machine table, putting the center of another hole under the drill.
In these cases, the proposed device is very useful. Is it a U-shaped bracket covers the front of the machine, and the free ends attached to the vise. In this position, the vise free to move around the table and excludes the possibility of their fall.