外文翻譯---數(shù)控機床上探測器應變的工具（英文）

1、Maciej SZAFARCZYK Jaros?aw CHRZANOWSKI Rados?aw GO?CINIAK Warsaw University of Technology, Warsaw, Poland STRAIN GAUGE TOOL PROBE FOR NC LATHES ?Keywords: tool probe, strain gauge sensor, tool wear measurement, direct

2、tool wear measurement. ABSTRACT The main role of tool probes in NC machine tools. The probes used now in industry and their drawbacks. The original concept of a tool probe using full strain gauge bridges for orienta

3、tion of tool edges in four directions: +X, -X, +Z, -Z and for direct tool wear measurement. 1. INTRODUCTION The rapid development of all areas of manufacturing technology and the aim to reduce costs, increase precisio

4、n and to shorten production time are enforcing the use of modern production technology. Dimensional parameters are the most commonly encountered quality characteristics of workpieces. Conventional machine tools are gr

5、adually being replaced in production plants by modern manufacturing systems, components of which, in the case of machining, are CNC machines. Main new CNC machines operate several different tools. To increase dimensio

6、ns accuracy of components manufactured in CNC lathes we must use tool setting systems to know how the tools are located on the machine. Using traditional techniques, tool setting is time consuming and can be prone to

7、 human error. A touch probe system is an inspection equipment that allows a machine tool to perform geometrical measurements inside its working area, but besides tool tip coordinate identification, we must have informa

8、tion about tool wear. * The project has been financed from Multi-Year Programme PW-004, Institute for Sustainable Technologies - National Research Institute (ITeE - PIB) Standard tool setting system used touch-trigger

9、 probes. The most known is RP3 probing system (Figure 2) designed by Renishaw [2, 3]. Fig. 2. Renishaw RP3 probe [3]. The sensing of contact between workpiece and the probe is done by electric switches, witch strongly

10、determine the repeatability and accuracy of probing. The original touch-trigger probe also called ?kinematic resistive Probe” (Figure 3), works with a set of three cylindrical pegs attached to the stylus. Each of the

11、m rests on two separated electric contacts that gives altogether six points of constraint for the six degrees of freedom of the stylus. An electric circuit is built out of these contacts, which is closed, when the styl

12、us is in its neutral position. When the stylus touches the tool tip a further constraint point is added and so the pressure on one of the original constraint points is reduced, which changes the resistance of the elec