Process and testing method for PCB drilling machine drill chuck

A detection method, drilling machine technology, applied in the direction of metal processing equipment, grinding machine parts, manufacturing tools, etc., to achieve the effect of easy operation and control, meeting design and production requirements, and high precision

Active Publication Date: 2008-08-20
SHENZHEN SUFENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, traditional drilling machines are difficult to meet the above requirements

Method used

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  • Process and testing method for PCB drilling machine drill chuck
  • Process and testing method for PCB drilling machine drill chuck
  • Process and testing method for PCB drilling machine drill chuck

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The following examples are further explanations and descriptions of the present invention, and do not constitute any limitation to the present invention.

[0016] The invention provides a method for processing and detecting a drill chuck of a PCB drilling machine. The method includes the following steps:

[0017] 1. To control the straightness of the external conical bus of the chuck and the roundness of the cylindrical surface, the specific steps are as follows:

[0018] Use a commercially available cylindrical grinder, such as a precision closed-loop CNC grinder from Studer, Switzerland, to grind the outer conical surface and outer cylindrical surface of the chuck. The grinding wheel spindle of the machine tool has a runout accuracy of 0.016 microns and is supported by a hydraulic floating bearing. The centering of the spindle realizes precision sensing closed-loop numerical control, with the most intuitive large screen display, high stability, and large margin for precis...

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Abstract

The invention relates to a processing and detection method of drill bit chuck for PCB drilling machine, comprising: a. Using a closed-loop CNC cylindrical grinder to grind the external conical surface and external cylindrical surface of the chuck to make the straightness of the external conical bus of the chuck and the circularity of the cylindrical surface meet the design requirement; b. When processing the conic angle of the chuck through moving the grinder rail, using percent meter or dial indicator to ensure the design precision of the conic angle; c. Inserting a special mandrel in the guide hole of the chuck, the centre holes of both ends of the mandrel is the benchmark, fine grinding the conical surface and the external cylindrical surface to meet the requirement, using the center hole of the mandrel to locate and detect the straightness of the conical bus and cylindrical surface and the flop of the conical surface, cylindrical surface of the grinded finished product. The processing and detection method has the advantages that the operation and control are easy, the processed chuck is high-precision, the comprehensive performance of the chuck meets the design and production requirement.

Description

【Technical Field】 [0001] The invention relates to a drilling machine for drilling micro-holes on a printed circuit board (PCB), in particular to a method for processing and detecting a drill chuck of a PCB drilling machine. 【Background technique】 [0002] A large number of small precision chucks are used on printed circuit board (PCB) drilling machines (see Figure 1), although the pilot holes of the drill chuck used to install the chuck are uniform (diameter 3.175mm), and the chuck The drill bit is from a few tenths of a millimeter to a few millimeters. This kind of chuck has a variety of specifications. Driven by the spindle motor, the drill drills at a high speed of tens of thousands to 200,000 revolutions per minute. Therefore, the drill is required to be firmly clamped in the chuck to facilitate drilling. Well rounded holes. At the same time, the chuck is required to be easy to install and unload, so the accuracy of the chuck is very high. Also, because the chuck is subjected...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B5/14B24B5/48B24B1/00B24B49/16
Inventor 李小琳陈忠南
Owner SHENZHEN SUFENG TECH
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