Abstract:
Disclosed is a blocked lens thickness gauge (10) for measuring the thickness of a semi-finished lens (100) that is blocked for surfacing of the concave side thereof. A lens contacting sensor shaft (70) is supported between two sets of orthogonally mounted ball bearings (66, 66') and a needle shaft (64), the latter being supported on spring-loaded bearings (68, 68') such that the needle shaft (70) is urged toward the lens contacting sensor shaft (70) by the spring loading. A slipping clutch is also provided to allow the needle shaft (64) to absorb inertia forces resulting from abnormal shocks.
Abstract:
An apparatus for determining the thickness of wads of papers (A) in connection with their binding within a cover, comprises an automatically released compressing means (2), which indicates, on display means, a required thickness value. The apparatus is provided with an electronic control circuit and an electric solenoid drive circuit. On insertion in a receiver means (1), the wad of papers (A) actuates an electro-optical switch (D2, Q2) which energizes the solenoid (9), the armature (10) of which compresses the wad of papers (A). During the compressing movement, pulses received from two reading means (6, 13) are counted, the total number of pulses representing a measure of the required thickness value.
Abstract:
Described is a method of measuring the thickness of paste-like or dough-like material on a moving surface (5). A movably mounted measurement roller is laid on the layer and, while the surface covered by the layer moves past, the distance the roller is displaced at right angles to the direction of motion of the surface is determined by means of a sensor which generates an output signal. One parameter of this output signal is functionally related to the magnitude of the measurement-roller displacement, i.e. the thickness of the layer. In order to maintain precision and avoid the layer being measured being wound on the measurement roller, a pre-defined braking force is exerted on the roller.
Abstract:
A method and system for measuring the profile of a strip of material (16) produced in a reversing mill (10) in which a direction of travel of the strip (16) is reversible includes a single thickness gauge (18) that measures the thickness of the strip (16) and generates the thickness signals, and a moving device (27) coupled to the gauge (18). The moving device (27) controllably moves the gauge (18) transversely to the strip so that the gauge (18) measures the thickness of the strip in one pass of the strip through the gauge. The moving device (27) maintains the gauge in a stationary position in another pass of the strip (16) through the gauge (18) such that the gauge measures the thickness of the strip (16) at different points along the longitudinal lines of the strip (16). The measurements of the thickness of the strip (16) at the different points are processed in a processing device (25) and interpreted into profile data.
Abstract:
The invention concerns a device for measuring, to a given tolerance, the width of a fiber pack passing between a pair of rollers mounted so that the nip can be adjusted. The invention calls for at least one of the pair of rollers to be made of a material with a low coefficient of thermal expansion, so that the thermal expansion of the pair of rollers when the measurement device is operating is less than the given tolerance on the width of the fiber pack.
Abstract:
A thickness measurement device for foil material having a preliminary sensing element in front of the actual measurement gap, which reacts when there is an increase in the thickness of the transported material and if necessary swings the measurement system away from the transport plane. This prevents blockages in the transport system and damage and misadjustments in the measurement system. A triggering mechanism working in conjunction with the preliminary sensing element can be so designed that the swinging movement does not take place until a specific pre-set force is reached. After the operating problem has been put right, the measurement system is automatically returned to its original position.
Abstract:
A method and apparatus (10) for measuring the thickness of an article (12) comprises providing a table (18) having a plurality of thickness references (30) at a first end (36) and with openings (22) for access to the lower surface of the article (12) on the table. A plurality of pairs of opposed sensors are mounted on a carriage (44) that extends across the width of the table (18) and is adapted for movement in the longitudinal direction of the table. One member (46) of each pair of sensors is above the table opposite a second member (48) that is below. The carriage (18) is positioned at a first location where each pair of sensors measures the thickness of the thickness reference with which it is aligned. The carriage then is stepwise moved to one or more subsequent locations to measure the thickness of the article at such locations.
Abstract:
The base has a vertical symmetrical axis and, in the middle of its lower side, a depression into which leads an air inlet passage and from which an air outlet passage leads to a pressure-regulating nozzle. The base carries a vertical support (20) having a double T section, said support carrying a vertical column (22) in the form of a four-sided section for a slide (4) with a feeler (5) and for a counterweight. Passing over deflection rollers are strips (9, 10) one for tension and the other for counter-tension, said strips being linked with the slide (4) and with the counterweight. The support (20) carries a support element, and on this an adjustable and securable holder which forms a sliding support for the upper end of the column. At least the column (22) for the slide (4) is supported on the base via a ball-cup linkage. The slide (4) carries the bearing races (40) on ball bearing supports (42, 43), from which the first (42) can be set and secured in a rolling, pitching and lurching direction, and the second (43) are arranged movably in a rolling, pitching and lurching direction and are elastically loaded towards the column (22). In this way only two mutually adjacent lateral faces of the column (22) need to be of maximum possible accuracy.