Screw locking method and screw locking equipment

Abstract

The invention discloses a screw locking method and screw locking equipment. The screw locking method comprises the following steps of making a bit of a screwdriver be coaxial with a screw in a loadingposition and making a front end of the bit protrude outside a surface where a front end of an air pipe of the screwdriver and a tail end surface of the screw are attached, wherein a length from the front end of the bit protruding outside a leaning surface is equivalent to a depth of a torque transmission groove in the tail end surface of the screw; forming a negative pressure in a through hole coaxial with the bit at the front end of the air pipe to adsorb the screw; and keeping the negative pressure at the through hole of the air pipe, wherein the bit rotates at a low speed. According to thescheme, before the screw is locked, the bit rotates at the low speed first. In the rotating process of the front end of the bit, the screw can enable the front end of the bit to be inserted into thetorque transmission groove to achieve a torque transmission connection under a suction effect, and the screw can be positioned by the bit when the screw is locked, so that a condition of inclination when the screw is in contact with a to-be-connected hole is avoided. Therefore, the locking quality is guaranteed effectively, the locking effectiveness is improved and the multi-point locking efficiency is improved.

Description

technical field [0001] The invention relates to the field of screw machines, in particular to a screw locking method and screw locking equipment. Background technique [0002] The screw machine is a small machine that automatically locks screws. Its action structure can generally be divided into two parts: the feeding part and the electric batch part. The feeding part is responsible for screening and providing screws, and the electric batch part is responsible for taking screws and locking screws. The generation of the machine not only improves the working efficiency but also reduces the intensity of manual work. [0003] In the suction screw machine, the screw is usually blown into the screw jaw through a hose, and then the screw is adsorbed to the bit by the suction tube on the screwdriver, and then locked. [0004] The problem with this structure is that after the adsorption tube absorbs the screw, it cannot ensure that the twist transmission groove on the end surface of...

AI Technical Summary

Problems solved by technology

[0004] The problem with this structure is that after the adsorption tube absorbs the screw, it cannot ensure that the twist transmission groove on the end surface of the screw is directly opposite to the front end of the bit. For example, the bit is a cross batch or its front end is a tripod; It cannot be ensured that each fork of the cross front end of the bit corresponds to each fork of the torsion transmission groove, so that the front end of the bit cannot be effectively inserted into the torsion transmission groove to realize the torsion transmission connection

At this time, when the screw is moved to the waiting position for locking, since the screw will touch the waiting position first, if the position control accuracy is not high, there is a risk that the screw will be skewed in the hole

At this time, when the bit is started to lock again, the rotational force of the bit can easily cause the screw to shift and tilt. The accumulation of these position deviations will cause the locking quality of the screw to fail to meet the requirements.

Images