search.noResults

search.searching

note.createNoteMessage

search.noResults

search.searching

orderForm.title

orderForm.productCode
orderForm.description
orderForm.quantity
orderForm.itemPrice
orderForm.price
orderForm.totalPrice
orderForm.deliveryDetails.billingAddress
orderForm.deliveryDetails.deliveryAddress
orderForm.noItems
generally used in all aspects of powertrain—gears, pistons, liners. As these need to accept higher densities of power as engines have downsized to meet fuel economy regula- tions, their surface roughness specifications are even more critical to get just right. With areal measurements come areal specifications. “For


example, Sa is the equivalent in areal terms to Ra, the arith- metic average over a surface,” explained Schmidt. The sym- bol V is also used to explain volume terms. The specification generally used in industry for area surface measurements is ISO 25178 for 3D surface texture.


Zygo is known for noncontact surface measurement while its companion brand in the Ametek umbrella, Taylor-Hobson, is known for its stylus-style systems. “We are working with our sister company on a convergence of our respective tech- nologies such that customers will no longer need to second guess if the results of a tactile or noncontact system will cor- relate,” he said. “Even as the optical systems can do things that others cannot, there remains a place for both.”


Speed and Ease of Use Jonathan Tedesco of Keyence (Charlotte, NC) also believes that easy-to-use hardware and analysis software is important for a simple reason—customers are demanding it. “Our customers are always asking for faster data collection,” he said. “They also want to know what the numbers mean and how to use them to make better decisions.” Acknowledging that noncontact surface systems are gen-


erally more costly than contact-stylus systems, their advan- tages also go beyond better speed and coverage. Picking the right spot to start a stylus can be subjective and prone to error, according to Tedesco. “Noncontact systems cannot mar the surface, as might be possible with a stylus system, especially on soft materials” or where the surface has to look pristine, he stated. The width of the stylus may also be an issue in measuring surfaces with a very fine roughness struc- ture. “We use lasers with a 400-nm spot size to measure and resolve very fine structure,” he said. With area data comes flexibility. “We can provide four- million data points and even if the customer wanted a linear R measure, they can decide how and where to draw that profile through the data,” he said. “Maybe they are look- ing for the deepest point, or the highest point; they can use an assistance tool in our software to find those lowest or highest points to draw their profile.” The software can also draw multiple lines as well as provide full area S and


June 2017 | AdvancedManufacturing.org 71


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80  |  Page 81  |  Page 82  |  Page 83  |  Page 84  |  Page 85  |  Page 86  |  Page 87  |  Page 88  |  Page 89  |  Page 90  |  Page 91  |  Page 92  |  Page 93  |  Page 94  |  Page 95  |  Page 96  |  Page 97  |  Page 98  |  Page 99  |  Page 100  |  Page 101  |  Page 102  |  Page 103  |  Page 104  |  Page 105  |  Page 106  |  Page 107  |  Page 108  |  Page 109  |  Page 110  |  Page 111  |  Page 112  |  Page 113  |  Page 114  |  Page 115  |  Page 116  |  Page 117  |  Page 118  |  Page 119  |  Page 120  |  Page 121  |  Page 122  |  Page 123  |  Page 124  |  Page 125  |  Page 126  |  Page 127  |  Page 128  |  Page 129  |  Page 130  |  Page 131  |  Page 132  |  Page 133  |  Page 134  |  Page 135  |  Page 136  |  Page 137  |  Page 138  |  Page 139  |  Page 140  |  Page 141  |  Page 142  |  Page 143  |  Page 144  |  Page 145  |  Page 146  |  Page 147  |  Page 148  |  Page 149  |  Page 150  |  Page 151  |  Page 152  |  Page 153  |  Page 154  |  Page 155  |  Page 156  |  Page 157  |  Page 158  |  Page 159  |  Page 160  |  Page 161  |  Page 162  |  Page 163  |  Page 164  |  Page 165  |  Page 166  |  Page 167  |  Page 168  |  Page 169  |  Page 170  |  Page 171  |  Page 172  |  Page 173  |  Page 174  |  Page 175  |  Page 176