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Process and testing method for PCB drilling machine drill chuck

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

Active Publication Date: 2009-10-21
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 illustrations 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. The straightness of the generatrix of the outer conical surface of the chuck and the roundness of the outer cylindrical surface are controlled. The specific steps are:

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

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Abstract

A method for processing and detecting a drill chuck of a PCB drilling machine, the method comprising: a, grinding the outer conical surface and the outer cylindrical surface of the chuck with a closed-loop numerical control cylindrical grinder, so that the straightness of the generatrix of the outer conical surface of the chuck and the roundness of the outer cylindrical surface meet the design requirements; b. When the taper angle of the chuck is processed by pulling the guide rail of the grinder, use a dial indicator or a dial gauge to indicate the design accuracy of the taper angle; c. In the guide hole of the chuck Insert a special mandrel in the center of the mandrel, use the center holes at both ends of the mandrel as a reference, finely grind the outer conical surface and the outer cylindrical surface to the requirements, and use the center hole of the mandrel to locate the finished product to detect the straightness degree and the beating of the outer conical surface and outer cylindrical surface. The method of the invention is easy to operate and control, the processed collet has high precision, and the comprehensive performance of the collet meets the design and production requirements.

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 hole of the drill chuck used to fit the chuck is uniform (3.175mm in diameter), and the drill bit in the chuck 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 bit drills at a speed of tens of thousands to 200,000 to 300,000 rpm. Therefore, the drill bit is required to be firmly clamped in the chuck to facilitate drilling. Holes with good roundness. At the same time, the collet is required to be easy to assemble and disassemble, so the precision of the collet is required to be very high. A...

Claims

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Application Information

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