Abstract: A walk-behind rail condition monitoring apparatus is provided, including a frame; at least one handle on the frame; a processor mounted to the frame; a couplant tank mounted to the frame; and a rail capture unit mounted to the frame. The rail capture unit is constructed and arranged for retaining an ultrasonic sensing wheel and including a plurality of rotating guides for maintaining alignment of the monitor on a railroad rail.

Abstract: Coordinate measuring machines typically include a jogbox that allows an operator to control movements of a probe with a joystick and dedicated buttons. By facilitating advanced interaction between the jogbox and the dimensional metrology application, the jogbox may be used to control most or all of the functional aspects of the dimensional metrology application, including, in some instances, control of the coordinate measuring machine. The jogbox may include an adaptability of communications protocol such that it may interact with any one of a number of types or brands of coordinate measuring machines. A dynamic and flexible display and/or user input system may be employed to facilitate the use of a single jogbox with different systems. Further, the inherent flexibility of various jogbox embodiments disclosed herein may allow different categories of users to select and/or customize a jogbox interface.

Abstract: Coordinate measuring machines typically include a jogbox that allows an operator to control movements of a probe with a joystick and dedicated buttons. By facilitating advanced interaction between the jogbox and the dimensional metrology application, the jogbox may be used to control most or all of the functional aspects of the dimensional metrology application, including, in some instances, control of the coordinate measuring machine. The jogbox may include an adaptability of communications protocol such that it may interact with any one of a number of types or brands of coordinate measuring machines. A dynamic and flexible display and/or user input system may be employed to facilitate the use of a single jogbox with different systems. Further, the inherent flexibility of various jogbox embodiments disclosed herein may allow different categories of users to select and/or customize a jogbox interface.

Abstract: A machine, such as a coordinate measuring machine, having a component or element movable with respect to a support structure along rails or guideways, wherein the rails have a coefficient of thermal expansion that is different from that of the support structure to which they are attached. Differential thermal expansion and contraction of the rails with respect to the support structure may be accommodated without binding or distortion of the rails by coupling each guideway to the support structure at two different points. Typically, the coupling at the first point is rigid and prevents any movement of the rail with respect to the support structure. The second coupling includes a flexible component that permits movement of the rail with respect to the support structure in a direction of movement of the element or component. This flexible component may be a leaf spring. In another embodiment, the first coupling may also be flexible.

Abstract: A machine, such as a coordinate measuring machine, having an element and a structure movable with respect to each other along rails, wherein the rails have a different coefficient of thermal expansion than the structure to which they are attached. In one embodiment, a bar is disposed on the structure opposite the rails. This bar has a coefficient of thermal expansion, a stiffness, a spacing from the neutral axis of the structure, and a cross-sectional dimension such that the bar balances any thermal stresses in the structure caused by differential expansion or contraction of the structure and the rails with temperature changes to minimize any bending of the structure. In one embodiment, two rails are disposed on a beam, and a carriage travels on the two rails. For each rail, there is an associated bar disposed on an opposite surface of the beam. In another aspect, a pin extends into an elongated slot on a slide associated with the structure to allow the structure to expand and contact.

Abstract: A machine, such as a coordinate measuring machine, having an element and a structure movable with respect to each other along rails, wherein the rails have a different coefficient of thermal expansion than the structure to which they are attached. In one embodiment, a bar is disposed on the structure opposite the rails. This bar has a coefficient of thermal expansion, a stiffness, a spacing from the neutral axis of the structure, and a cross-sectional dimension such that the bar balances any thermal stresses in the structure caused by differential expansion or contraction of the structure and the rails with temperature changes to minimize any bending of the structure. In one embodiment, two rails are disposed on a beam, and a carriage travels on the two rails. For each rail, there is an associated bar disposed on an opposite surface of the beam. In another aspect, a pin extends into an elongated slot on a slide associated with the structure to allow the structure to expand and contact.

Abstract: A machine, such as a coordinate measuring machine, having an element and a structure movable with respect to each other along rails, wherein the rails have a different coefficient of thermal expansion than the structure to which they are attached. In one embodiment, a bar is disposed on the structure opposite the rails. This bar has a coefficient of thermal expansion, a stiffness, a spacing from the neutral axis of the structure, and a cross-sectional dimension such that the bar balances any thermal stresses in the structure caused by differential expansion or contraction of the structure and the rails with temperature changes to minimize any bending of the structure. In one embodiment, two rails are disposed on a beam, and a carriage travels on the two rails. For each rail, there is an associated bar disposed on an opposite surface of the beam. In another aspect, a pin extends into an elongated slot on a slide associated with the structure to allow the structure to expand and contact.