Improved structure of clamping jaw for printed circuit board drill bit ring assembling machine

Abstract

The invention discloses an improved structure of a clamping jaw for a printed circuit board drill bit ring assembling machine. The improved structure is characterized in that the end portions of a clamping head of a drilling bit handle clamping type clamping jaw for an existing ring assembling machine extend downwards to form the clamping ends, and the opposite faces of the pair of clamping ends are in a shape matched with the peripheral face of a lantern ring so that the lantern ring on a drill bit can be directly clamped rather than the traditional mode that the drill bit drill handle portion is clamped. The improved clamping jaw is free of influences of the diameter of the drill bit and the length of a knife, the problem that the drill bit can not be clamped by the clamping head is solved, and due to the fact that the lantern ring is made of plastic materials, the situation that the clamping jaw is seriously abraded is avoided.

Description

technical field [0001] The invention relates to a component part for a ring-clamping machine for a drill bit of a printed circuit board, in particular to an improved structure of a clamping jaw for a ring-clamping machine for a drill bit of a printed circuit board. Background technique [0002] In the drilling process of printed circuit board (PCB), in order to avoid damage to the printed circuit and electronic components on the circuit board when drilling, and to ensure that the drilling depth meets the required requirements, special The shank of the drill bit is sleeved with a protective collar (such as figure 1 As shown), the commonly used PCB drill rings on the market are all made of plastic materials, and the outer diameter of the rings is a uniform value, and the common one is generally 7.6mm. The process of setting the collar is usually completed by the upper ring machine, but because the distance from the bottom of the collar to the drill tip of drills with differen...

AI Technical Summary

Problems solved by technology

However, because the drill body 4 of the drill with a small diameter (such as a drill with a diameter of 1.25-1.50 mm) is too long for printed circuit boards, the distance between the taper 3 of the drill shank and the shank 2 of the collar 1 is relatively short. (like figure 1 As shown), the chuck part of the jaw cannot grasp the drill pin, so that the upper ring machine often stops or the drill bit falls during operation

In addition, the clamping jaws of the clamping drill shank clamp the drill shank each time, and the drill shank is made of metal, which will cause serious wear and tear on the chuck of the clamping jaw, and it will easily lead to unstable clamping, thus shortening the clamping jaws service life

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