Automatic Tracing and Measuring Crankpin Surface for the Initial Orientation in Non-Circular Grinding

2012 ◽  
Vol 569 ◽  
pp. 683-687
Author(s):  
Nan Yan Shen ◽  
Jing Li ◽  
Xin Ling Wang
Keyword(s):  
Machine Tool ◽  
Uniform Distribution ◽  
Phase Angle ◽  
Cylindrical Surface ◽  
Initial Orientation ◽  
Measurement Device ◽  
Machining Precision ◽  
Touch Trigger Probe

It is essential to transform machine tool coordinate to workpiece coordinate accurately before grinding for the uniform distribution of grinding allowance to ensure the high machining precision of each crankpin’s profile and phase angle in non-circular grinding. To position the crankshaft with the even grinding allowance of each crankpin, the strategy for controlling touch trigger probe to realize the automatic tracing measurement for crankpin cylindrical surface is researched based on the measurement device using coordinate measuring principle.

Automatisierte Qualitätskontrolle*/Automated quality control - Presentation of an innovative stream finishing machine tool with an integrated optical measurement device

2015 ◽  
Vol 105 (06) ◽  
pp. 384-389
Author(s):  
E. Uhlmann ◽  
Y. Kuche ◽  
D. Oberschmidt ◽  
A. Löwenstein ◽  
S. Wiemann
Keyword(s):  
Quality Control ◽  
Machine Tool ◽  
Process Parameters ◽  
Optical Measurement ◽  
Measurement Device ◽  
Integrated Optical ◽  
Automated Quality Control ◽  
Milling Tools

Vorgestellt wird ein Maschinenprototyp zur Feinbearbeitung von Werkstückkanten und -oberflächen. Dieser verfügt über integrierte optische Messtechnik, die zur Kontrolle der Bearbeitungsergebnisse und gegebenenfalls zur automatisierten Nachbearbeitung eingesetzt werden kann. Mit dem Prototypen werden zum einen Fräswerkzeuge präpariert und zum anderen die Prozessparameter und deren Effekte analysiert. Abschließend beschreibt der Fachbeitrag einen Ansatz zur automatisierten Auslegung der Prozessparameter.   This paper presents a machine prototype for the finishing of edges and surfaces of work pieces. The prototype has an integrated optical measurement device, which can be used for the control of the process results and possibly automated remachining. The machine is used for the preparation of milling tools. Process parameters and their effects are analyzed and an approach for the automated setting of the process parameters is shown.

Method of Judging the Energy Measurement Device Error Wiring Based on Checking Tables

2010 ◽  
Vol 139-141 ◽  
pp. 2247-2251
Author(s):  
Xing Zhong Zhang
Keyword(s):  
Phase Angle ◽  
Energy Measurement ◽  
Test Results ◽  
Measurement Device ◽  
Electric Parameter ◽  
Simple Method ◽  
Line Voltage ◽  
Three Phase ◽  
Working Efficiency

Focused on the complexity and Time-consuming of judging the error wiring of the energy measurement device, It extracts a series of electric parameter tables including phase angle table, such as the voltage sequence table, the line voltage location table, phase angle transform table, and phase angle table. And proposes a simple method of judging the error wiring of Three-phase three-wire error wiring of two components energy measurement device. The method based only on the four tables, inspectors only need to look-up the tables in accordance with the measured dates and get the error wiring instead of drawing vector plots. Because these tables root from vector plots. It greatly simplifies inspectors to judge wiring mistake, improves the working efficiency and makes the test results more accurate.

scholarly journals The Measurement and Correction of the Spindle Squareness Error on Five-Axis Machine Tools

2021 ◽  
Author(s):  
Hongwei Liu ◽  
Pingjiang Wang ◽  
Jihong Chen ◽  
Hua Xiang
Keyword(s):  
Machine Tool ◽  
Tilt Angle ◽  
Spatial Location ◽  
Calibration Method ◽  
Projection Data ◽  
Cnc Machine ◽  
Squareness Error ◽  
Touch Trigger Probe ◽  
Nc Machine ◽  
Five Axis

Abstract The present study aims to establish a measurement method for the squareness error between the machine spindle and the machine table plane. The contact-type touch trigger probe is installed on the spindle of machine tool. When the probe ball touches the rectangle box, a signal is sent to the CNC system to record the space position of the spindle in the machine coordinate system. What this design is to pass to adopt three views of the spindle to determine its spatial location. In the light of the front view and the side view of the spindle, the tilt angle can be identified. According to the projection data, the perpendicularity of the spindle to the horizontal plane is adjusted until the tilt angle error decrease to zero. To verify this method, the corresponding tests are performed on five-axis CNC machine tool. The experimental results show that vertical error of the spindle is reduced by about 60 percent after the tilt angle is adjusted. Therefore, the proposed measurement and calibration method is effective in NC machine tool.

Error Calibration for Five-Axis Machine Tools by On-the-Machine Measurement Using a Touch-Trigger Probe

2014 ◽  
Vol 8 (1) ◽  
pp. 20-27 ◽  
Author(s):  
Soichi Ibaraki ◽  
◽  
Yusuke Ota
Keyword(s):  
Machine Tool ◽  
Test Piece ◽  
Machine Tools ◽  
Experimental Demonstration ◽  
Arbitrary Geometry ◽  
Rotary Axes ◽  
Ball Bar ◽  
Touch Trigger Probe ◽  
Error Calibration ◽  
Five Axis

This paper presents a scheme to calibrate the error map of the rotary axes of a five-axis machine tool. This is done by means of on-the-machine measurement of a test piece using a contact-type touch-trigger probe. The present probing-based approach is more suitable for efficient and automated “self-calibration,” than conventional calibration schemes, such as ball bar tests or R-test. It is thus advantageous in the application to periodic checking of the error map, or periodic updating of its numerical compensation. In the present approach, a test piece of arbitrary geometry, e.g. a raw unmachined workpiece, can be used as the probing target. An experimental demonstration is presented.

scholarly journals Measurement Accuracy Investigation of Touch Trigger Probe with Five-Axis Machine Tools

2016 ◽  
Vol 63 (4) ◽  
pp. 495-510 ◽  
Author(s):  
Md. Mizanur Rahman ◽  
J.R.R. Mayer
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Accuracy Assessment ◽  
Cutting Fluid ◽  
Surface Wetness ◽  
Measuring Surface ◽  
Surface Irregularities ◽  
Touch Trigger Probe ◽  
Compact Design ◽  
Five Axis

Abstract The touch trigger probe plays an important role in modern metrology because of its robust and compact design with crash protection, long life and excellent repeatability. Aside from coordinate measuring machines (CMM), touch trigger probes are used for workpiece location on a machine tool and for the accuracy assessment of the machine tools. As a result, the accuracy of the measurement is a matter of interest to the users. The touch trigger probe itself as well as the measuring surface, the machine tool, measuring environment etc. contribute to measurement inaccuracies. The paper presents the effect of surface irregularities, surface wetness due to cutting fluid and probing direction on probing accuracy on a machine tool.

Research about Deformations Identification for Globoidal Cam Machine Based on Multi-Body System Theory

2014 ◽  
Vol 597 ◽  
pp. 454-457
Author(s):  
Li Ping Zhao ◽  
Hong Ren Chen ◽  
Yi Yong Yao ◽  
Hu Zhao ◽  
Peng Yan
Keyword(s):  
System Theory ◽  
Machine Tool ◽  
Structure Optimization ◽  
Machining Process ◽  
Body System ◽  
Key Factors ◽  
Machining Precision ◽  
Multi Body ◽  
Deformation Error ◽  
Stiffness Distribution

Deformation error caused by cutting heart and external force is one of the key factors influencing machining precision in machining process. Aiming to identify the machine deformation which has the most important influence on machining precision, an identification method for sensitive error and deformation based on multi-body system theory has been proposed, which lay the basis of stiffness distribution of a machine tool and structure optimization of parts. At the end of this paper, the effective of this method is verified by using the machine tool for globoidal cam.

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