Development of a touch probe based on five-dimensional force/torque transducer for coordinate measuring machine (CMM)

2012 ◽  
Vol 28 (2) ◽  
pp. 238-244 ◽  
Author(s):  
Qiaokang Liang ◽  
Dan Zhang ◽  
Yaonan Wang ◽  
Yunjian Ge
Keyword(s):  
Coordinate Measuring Machine ◽  
Measuring Machine ◽  
Torque Transducer ◽  
Touch Probe

scholarly journals Characterization of machining quality attributes based on spindle probe, coordinate measuring machine, and surface roughness data

2014 ◽  
Vol 1 (2) ◽  
pp. 128-139 ◽  
Author(s):  
Tzu-Liang Bill Tseng ◽  
Yongjin James Kwon
Keyword(s):  
Surface Roughness ◽  
Coordinate Measuring Machine ◽  
Dimensional Accuracy ◽  
Quality Characteristics ◽  
Machining Parameters ◽  
Production Environment ◽  
Significant Interaction Effect ◽  
Machining Quality ◽  
Measuring Machine ◽  
Touch Probe

Abstract This study investigates the effects of machining parameters as they relate to the quality characteristics of machined features. Two most important quality characteristics are set as the dimensional accuracy and the surface roughness. Before any newly acquired machine tool is put to use for production, it is important to test the machine in a systematic way to find out how different parameter settings affect machining quality. The empirical verification was made by conducting a Design of Experiment (DOE) with 3 levels and 3 factors on a state-of-the-art Cincinnati Hawk Arrow 750 Vertical Machining Center (VMC). Data analysis revealed that the significant factor was the Hardness of the material and the significant interaction effect was the Hardness + Feed for dimensional accuracy, while the significant factor was Speed for surface roughness. Since the equally important thing is the capability of the instruments from which the quality characteristics are being measured, a comparison was made between the VMC touch probe readings and the measurements from a Mitutoyo coordinate measuring machine (CMM) on bore diameters. A machine mounted touch probe has gained a wide acceptance in recent years, as it is more suitable for the modern manufacturing environment. The data vindicated that the VMC touch probe has the capability that is suitable for the production environment. The test results can be incorporated in the process plan to help maintain the machining quality in the subsequent runs.

Accuracy Analysis of Machining Process Using a Spindle Probe and a CMM to Reduce the Scrap

2005 ◽  
Author(s):  
Yongjin Kwon
Keyword(s):  
Machine Tool ◽  
Measurement Data ◽  
Coordinate Measuring Machine ◽  
Machining Process ◽  
Inspection Time ◽  
Cnc Machine ◽  
Part Quality ◽  
Post Process ◽  
Measuring Machine ◽  
Touch Probe

In-process part inspection using a spindle touch probe has gained a significant importance, mainly because parts can remain on the machine without disrupting the machine setup while inspection is being conducted. This practice leads to a shorter inspection time, improved part accuracies, and reduction of scraps. Recently, intense domestic and international competition has put more importance on part quality in terms of producing parts right the first time and maintaining the consistent quality standards. A literature review revealed that a comparative analysis between in-process gauging using a touch probe and post-process inspection using a coordinate measuring machine (CMM) to ascertain part quality has not been adequately studied. Therefore, there is a need for a study to measure the characteristics of the two inspection techniques. To address the problem, cutting experiments were conducted and measurement data were analyzed using a state-of-the-art CNC machine, a CMM, a touch probe, and a high-precision ballbar system. The experimental data show that machined features and touch probe measurements are affected by the inherent shortcomings in machine tool structure, suggesting a machine tool capability analysis be undertaken in tune with the required tolerance specifications prior to machining operations, rather than solely relying on the touch probe inspection for part quality assessment.

Evaluation of True Position Using Coordinate Measuring Machine

2014 ◽  
Vol 555 ◽  
pp. 511-517
Author(s):  
Roman Budiský ◽  
Marian Králik ◽  
Ján Kost
Keyword(s):  
Measurement Uncertainty ◽  
Coordinate System ◽  
Experimental Evaluation ◽  
Coordinate Measuring Machine ◽  
Coordinate Measuring Machines ◽  
Probe System ◽  
Geometric Deviations ◽  
True Position ◽  
Measuring Machine ◽  
Touch Probe

The article makes a contribution to the ever-important topic of evaluating geometric deviations of tolerated forms related to the datum system using coordinate measuring machines with a touch probe system. The datum system consists of the coordinate system and the coordinates planes. An integral part of the article is the quantification of the true position tolerated form related to the datum system and experimental evaluation of the deviation with calculation of measurement uncertainty, according to STN EN ISO 15530-3.

scholarly journals Support on Demand

2001 ◽  
Vol 123 (08) ◽  
pp. 60-62
Keyword(s):  
Stainless Steel ◽  
Coordinate Measuring Machine ◽  
Spinal Deformities ◽  
First Line ◽  
Spinal Implant ◽  
Left Behind ◽  
On Demand ◽  
Probe System ◽  
Measuring Machine ◽  
Touch Probe

OMC Precision Products, a maker of spinal implant, first line of attack for smoothness is machining to minimize cusps or scallops left behind by machine tool cutters. In finishing passes, the cusps are diminished by minimizing stepovers, the distance the tool moves into the new path. OMC focuses on making implants for correcting spinal deformities. OMC has three lines of implants, all machined from stainless steel or titanium. It makes plates and screws for spines that are degenerating or have undergone trauma; hooks and rods for deformities such as scoliosis; and cages to replace damaged vertebrae. First-article inspections are done on a Primus coordinate measuring machine from Mycrona Inc. of Plymouth, Michigan. The unit is equipped with a touch probe system from Renishaw Inc. of Schaumburg, Illinois. OMC also produces 2 alternatives to plates, a spine straightening system based on titanium or stainless-steel rods several inches long. The rods are locked in place with diverse types of bone screws or spinal hooks.

Model Reconstruction from CMM and Optical Scanning Data for Reverse Engineering

2012 ◽  
Vol 538-541 ◽  
pp. 2957-2960
Author(s):  
Peng Xin Liu ◽  
Xuan Liu ◽  
Su Chang Ma ◽  
Li Jie Wang
Keyword(s):  
High Precision ◽  
Coordinate Measuring Machine ◽  
Optical Scanning ◽  
Data Merging ◽  
Optical Scanner ◽  
System A ◽  
Common Coordinate System ◽  
Measuring Machine ◽  
Touch Probe ◽  
Merging Method

This paper introduces a novel modeling method using points acquired by a touch probe on a coordinate measuring machine and an optical scanner. An improved iterative closet point algorithm is adopted in order to transform the optical scanning data and the high precision points captured by a touch probe into a common coordinate system. A data merging method is also used to keep the high precision of feature surfaces and then unified into a precise 3D model. Experimental results demonstrate the efficiency of the presented method, which enhances the flexibility of digitization while maintaining the accuracy of feature surfaces.

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