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Novel method for on-line positioning of superfine milling cutter and workpiece

A technology for micro-milling cutters and workpieces, used in metal processing machinery parts, manufacturing tools, metal processing equipment, etc., can solve the problems of inability to online detection, rely on labor, poor applicability, etc., to save configuration time, simple equipment, and positioning speed. quick effect

Inactive Publication Date: 2013-06-26
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The detection technology of the invention has high positioning accuracy, and replaces the shortcomings of traditional tool positioning technology that rely too much on labor, time-consuming, unable to detect online, and poor applicability, so as to ensure the processing accuracy of micro-milling

Method used

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  • Novel method for on-line positioning of superfine milling cutter and workpiece

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Embodiment Construction

[0022] Such as figure 1 As shown, the present invention is a novel online positioning method for a micro milling cutter and a workpiece, and detects whether the micro milling cutter is in contact with the workpiece based on the change of the voltage signal.

[0023] 1. The detection test is carried out on a self-developed small three-coordinate micro-milling machine tool. The X, Y, and Z axes are all driven by a brushless and slotless linear servo motor platform, and a linear grating coding measurement system with a resolution of 0.1 μm from RENISHAW is integrated. , which can realize the closed-loop feedback control of the servo motor; the maximum speed of the aerostatic electric spindle is 120,000rpm; the workpiece material is brass, and the cutting tool is a carbide two-edged flat end mill with a milling diameter of 0.1mm.

[0024] 2. The micro milling cutter is clamped in the tool holder of the high-speed spindle. The two ends of the special sensor are respectively connect...

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Abstract

The invention discloses a novel method for on-line positioning of a superfine milling cutter and a workpiece, and belongs to the field of superfine manufacturing. The novel method for on-line positioning of the superfine milling cutter and the workpiece is characterized in that the superfine milling cutter is clamped in a cutter tool chuck of a high-speed main shaft; a closed-loop circuit is built between the main shaft and the workpiece. A specially designed sensor is used for detecting sudden changing voltage of the closed-loop circuit in a feed process of a cutter tool. A voltage comparator is used for converting measured values into digital signals and sending to a programmable logic controller (PLC) of a tool. The PLC records coordinates of the cutter tool and contact points of the workpiece and sets a starting point of a processing position. The detection method can prevent influences over cutter tool positioning caused by tool bouncing, thermal expansion of the main shaft and other errors. The detection method is capable of achieving an on-line positioning accuracy at a submicron level. Meantime, the detection method has the advantages of being simple in needed equipment, low in cost and convenient to carry out.

Description

technical field [0001] The invention relates to a novel online positioning method for a micro milling cutter and a workpiece, which belongs to the field of micro manufacturing. Background technique [0002] The size of the tool used in micro-milling processing technology is very small, generally the length range is between 10mm-100mm, and the diameter is between 0.01mm-0.5mm. Because micro-milling has the advantages of processing complex three-dimensional shapes and precise geometric error control, etc. It has unique advantages in micro-manufacturing technology, but due to the reduction of tool diameter, it is not easy to accurately locate the micro-milling cutter and workpiece during processing, which seriously affects the machining accuracy of micro-milling. How to accurately position the micro-milling cutter and workpiece has become an It is one of the major bottlenecks that technology cannot be popularized in industrial applications. [0003] Otieno and Pedapati et al. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/22
Inventor 曹自洋李华殷振薛晓红郭丽华宋娜谢鸥汪帮富杨建锋
Owner SUZHOU UNIV OF SCI & TECH
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