Precision chuck for clamping PCB micro drill bit

Abstract

The invention relates to the technical field of mechanical chucks, in particular to a precision chuck for clamping a PCB micro drill bit. The precision chuck comprises a stepping motor, a synchronouspulley, a chuck base, a working head core, a chuck body, an air cylinder, a chuck pull rod and a compression spring. The working head core is installed inside the chuck base through a bearing. The synchronous pulley is arranged on the working head core in a sleeving mode and is further connected with the stepping motor. The working head core is provided with a through cavity. The chuck body and the chuck pull rod are both installed in the through cavity and are further matched to be connected. The compression spring is arranged on the chuck pull rod in a sleeving mode. A piston of the air cylinder corresponds to the end of the chuck pull rod. According to the precision chuck for clamping the PCB micro drill bit, the air cylinder is used for driving the chuck pull rod to move, the PCB microdrill bit can be clamped or loosened quickly through the chuck body, and machining of the PCB micro drill bit is facilitated; and the production efficiency is improved, labor cost is reduced, and unsafe factors like needle breaking and hand injuries caused by manual material collection traditionally are avoided.

Description

technical field [0001] The invention relates to the technical field of mechanical chucks, in particular to a precision chuck for clamping PCB micro-drills. Background technique [0002] PCB, the Chinese name is printed circuit board, is an important electronic component, a support for electronic components, and a provider of electrical connections for electronic components. [0003] In the process of PCB production, a kind of micro-drill is needed to complete the drilling. At present, in the process of PCB micro-drilling, especially after the precision grinding of PCB micro-drills, it is usually hand-held to complete the product processing. Due to PCB The diameter of the micro-drill is relatively small, and manual operation is very inconvenient, and the PCB micro-drill is easy to hurt hands. [0004] In addition, the concentricity of the product is also difficult to guarantee during the grinding process. The collets commonly used in automatic equipment mostly use a three-pe...

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Problems solved by technology

[0003] In the process of PCB production, a kind of micro-drill is needed to complete the drilling. At present, in the process of PCB micro-drilling, especially after the precision grinding of PCB micro-drills, it is usually hand-held to complete the product processing. Due to PCB The diameter of the micro-drill is relatively small, and manual operation is very inconvenient, and the PCB micro-drill is easy to hurt hands

[0004] In addition, the concentricity of the product is also difficult to guarantee during the grinding process. The collets commonly used in automatic equipment mostly use a three-petal or four-petal rod-type mechanism, relying on the tension of the rod to clamp the bar material. The outer diameter and the locking sleeve are severely worn, the accuracy is reduced, and the replacement frequency is high

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