Protective apparatus preventing lathe tool from breaking

A protective apparatus preventing lathe tool from breaking comprising a lathe tool support having a front chucking stand and a rear chucking stand mounted thereon;

• wherein said front chucking stand is provided with an opening which is used for receiving and locking said lathe tool and is used to divide said front chucking stand into a first chucking block and a second chucking block, said first chucking block having a pivot shaft pivoted to said lathe tool support, said second chucking block having an inner surface making contact with said lathe tool and an outer surface with a strain gage attached thereto;
• wherein said rear chucking stand has a through hole located at the front end thereof for receiving and locking the rear end of said lathe tool and has an actuating board attached to the rear end thereof;
• wherein said lathe tool support is provided with at least an electromagnet and a biasing means, which are opposite in location to said actuating board;
• and wherein said strain gage deforms, at such time when said lathe tool is overloaded, to send out a signal to regulate the power supply to said electromagnet in order that said actuating board is triggered to move from a first position to a second position so as to cause a cutting edge of said lathe tool to do an accelerated motion in an arcuate manner to move away from a work piece being lathed.