Other

Rtec-Instruments, Inc.

Nick Doe

Vishal Khosla

Gautam Char

Jun Xiao

Ming Chan

Michael Vinogradov-Nurenberg

A method for determining hardness of a material by implementing 3D imaging is proposed. The imaging provides database of points on the 3D imprint in an orthogonal X-Y-Z coordinate system. An imaginary image of the imprint is formed by finding a plurality of intersection points obtained by intersecting the imprint image in X-Y plane with the X-Z plane movable in the Y-axis direction for obtaining a plurality of points of intersection that lay in the X-Y plane. Statistical processing of the plurality of the points of intersection makes it possible to form imaginary image of the imprint in the X-Y plane and to use the reference dimension of the obtained imaginary image as a parameter for insertion into the hardness calculation formula.

Method for determining hardness of a material with implementation of three-dimensional imaging

A universal material tester with two or more consecutively arranges test units has a test tool supporting carriage, which is provided with a removable partition that allows conversion of the test-unit installation socket from a multiple test unit holder into a single test-unit holder, or vice versa. An advantage of the tester is a possibility of expanding dynamic range of measurements by using two or more test units, which are installed in series at one setting and can be used in sequential tests without replacement but with different measurement ranges. This broadens the dynamic measurement ranges and allows revealing material properties otherwise unattainable. The test units may be combined with an imaging device installed in series with the test tools that engage the sample physically.

Universal material tester with several consecutively arranged test units

The capacitive shift-force sensor is made in the form of a deformable casing defined by two parallel rigid plates spaced from each other and interconnected by two deformable members. The sensor is provided with two capacitors, wherein one capacitor plate of each capacitor is rigidly connected to one rigid plate and the other capacitor plate is rigidly connected to the other rigid plate. In an unloaded state of the sensor, capacitor gaps of both capacitors are equal and the capacitors have the same capacitive characteristics. However, when one of the rigid plates is maintained immobile and the other one is shifter under the effect of an applied shift force, the capacitor gaps of the capacitors, and hence, the capacitive characteristics of the capacitors, change differently, and with the use of a differential amplifier this difference is measured and recalculated into the value of the applied shift force.

Capacitive shift-force sensor

Proposed is a method for in-line testing and surface analysis of test material with participation of Raman spectroscopy wherein the apparatus has a column with a plurality of test units at least one of which is a wear test unit and another is a Raman spectrometer. The sample is located on a rotary table under the test units. By sequentially removing the material of the sample to a predetermined depth and then conducting the surface analysis with the use of the Raman spectrometer, it becomes possible to analyze distribution of the material components in the depth direction from the surface of the sample. delivery beams to the longitudinal axis of the Raman spectrometer

Method for in-line testing and surface analysis of test material with participation of raman spectroscopy

The sensor unit of the material tester consists of a pressure-sensor unit that measures a vertical force applied to the test probe during movement of the test probe relative to the test specimen and a horizontal force sensor unit for measuring the horizontally directed friction force. The horizontal force sensor unit is made in the form of a flexible parallelogram consisting of two sensor-holding plates interconnected through flexible beams, wherein one end of the first beam is attached to the upper sensor-holding plate and the opposite end to the lower sensor-holding plate, while one end of the second beam is attached to the lower sensor-holding plate and the other to the upper one. The beams are installed with gaps relative to both plates. The quick-release test probe incorporates a soft-touch feature.

Universal material tester with quick-release test probe and with reduced cross-talk between the sensors

Proposed is a method of determining optimal operation conditions for treating holes with a rotary tool by performing a hole treatment operation on a tester under various treatment conditions which are similar to the use of the tool in the industrial production on a real manufacturing equipment. The method consists of changing the treatment conditions and determining those operation parameters at which the treated hole is most optimally satisfies the given technical requirements. A criterion for evaluation of these optimal conditions is equality of pair forces acting on the rotary tool in the X- and Y-axis directions since such a situation prevents sidewise deviation of the tool from the direction of the thrust force applied in the Z-axis direction. The above condition is provided by the specific structure of the tester used for carrying out the method.

Method of determining optimal operation conditions for treating holes with rotary tools

Proposed is a torque measurement tester for testing hole-treating rotary tools used on hole treating operations such as drilling, tapping, reaming, countersinking, or the like under real operation conditions for determining the most optimal operations parameters. The torque measurement unit consists of a package of three sensor units, in which the first unit is connected to the frame of the tester via pressure sensors for measuring a thrust force acting in the Z-axis direction, the second sensor unit measures forces acting on the tool in the direction of the X-axis, and the third sensor unit measures forces acting in the Y-axis direction. All measurements are carried out irrespective of each other without mutual effect on the measurement data. The third unit resiliently supports the rotary tool relative to the second unit, while the second unit is connected to the first sensor unit.

Torque measurement tester for a hole treating rotary tool

An apparatus for in-line testing and surface analysis of a sample contains a base which stationarily supports a column and moveably supports an optical microscope, an interferometer, and at least test unit such as a scratch and abrasive wear tester that are moveable on the column in the Z-axis direction. A sample secured on a sample table, which is supported by a replaceable tribology drive unit on an X-stage that may position the sample under the microscope, interferometer, or test unit. Depending on the type of the test, the replaceable tribology unit may impart to the sample either a linear reciprocating movement or a rotating movement. The apparatus may operate in an automatic mode and is provided with a central processing unit that control movements of all moveable units through respective drivers via controllers connected to the central processing unit.

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San Jose, CA, United States of America

Nick Doe