Abstract:
A method of measuring a vehicular frame to determine alignment, where measurements provided in the manufacturer's specifications are known. The method consists of the following steps. Firstly, establishing at least one reference point spaced from a vehicular frame. Secondly, triangulating the vehicular frame by measuring the angle from the reference point to one or more coordinate points provided in the manufacturer's specifications. One side of the triangle containing the reference points is a reference line of a known length. Thirdly, using the length of the reference line and the angular measurement from the reference points as a basis for trigonometric calculation.
Abstract:
The device comprises a support structure (18) movable along at least a first reference axis (X), a feeler member (13, 14) carried by the structure (18) so as to be able to effect limited relative displacements along the axis (18) relative to a predetermined rest position, and detector means (30) for providing electrical signals indicative of the magnitude and direction of the movements of the feeler member (13, 14) relative to the structure (18). According to the invention, the feeler device comprises at leat a first intermediate structure (16) supported by the structure (18) by means of first blades (17a) which can be bend in a plane parallel to the reference axis (X); the feeler member (13, 14) is also supported by this intermediate structure (16) by means of second blades (17b) having bending characteristics substantially the same as those of the first blades (17a) in a plane parallel to the reference axis (X). The feeler device may be made so as to be able to detect movements of the feeler member (13, 14) relative to the support structure (18) along two (X, Y) or three independent axes (X, Y, Z) as well.
Abstract:
A device (10) for detecting deformations in solids includes an insertable casing (11) with inner dividing wall (20) and lower (26) and upper enclosed sections (24) filled with fluid (36 and 34). A first strain-sensing system (38), and a second strain-sensing system (42) are disposed in the lower and an upper enclosed systems respectively. A valve (18) couples the second strain-sensing system to the lower enclosed section (26) and is normally closed. The valve is constructed to open in response to a signal sent from the first strain-sensing system. The second strain-sensing system is constructed and arranged to measure the excessive strain.
Abstract:
An apparatus for checking dimensions and other geometrical features of pieces like shafts (20) or bushings (120) comprises support and reference devices (21; 110) for the piece, and checking devices (40; 70; 100; 119). Modular elements (5), equal to one another, are secured to two longitudinal cylindrical bars (1, 2) arranged one over the other. Linear guide portions (7) of the modular elements lie transversally, parallel to one another, and both the support and reference devices (21; 110) and the checking devices (40; 70; 100; 119) are adjustably connected to the linear guide portions (7). The checking devices comprise integral structures with movable arms (45; 73; 129) that touch the piece to be checked, and gauging heads (50, 85, 101, 134) actuated by the movable arms.
Abstract:
Device for supporting motor vehicle wheels when taking suspension geometry measurements, characterised by comprising: a structure (1, 1', 35) provided with ball supports (7) for its free resting on an underlying surface (15), at least a pair of rollers with substantially parallel axes, rotationally supported by said structure and supporting a wheel (16) of the vehicle (14), and means (21, 21', 33, 33', 41, 49) to neutralize on command, the effect of said ball support (7) and to firmly bind said structure (1, 1', 35) to said underlying surface (15).
Abstract:
The measuring device comprises a measurement probe (18) fastened at each end to supporting frames on either side of a workpiece holder and coupled via a universal joint (20) to the drive shaft (16) of a drive unit (15) which is also fastened to a supporting frame. The drive shaft (16) co-operates with a drive motor (15) in order to produce a translational movement and a rotational movement. Coupling the measurement probe (18) to the drive shaft (16) of the drive unit (15) via a universal joint (20) enables the measurement probe to be driven practically free of transverse forces. The measurement probe together with the bearings (17) at both ends can be optionally changed.
Abstract:
For movably mounting a measuring probe on a co-ordinate measuring machine, a carriage (18) has an electric motor (22) which, by means of rollers (24), provides a friction drive relation with a traction bar (16). The carriage (18) is connected by way of a wire rope (26) with a counterbalance deadweight (32). The latter has connected thereto an electric motor (36) providing a drive relation by means of a pair of rollers (38) with one of a pair of guide bars (34). The total mass of the motor arrangement is thereby split, with one arrangement compensating for the other and the power requirement is halved because the two motors share the total load. This provides for many operating advantages.
Abstract:
The invention relates, in parallel, to accessories susceptible of equipping such face plate. The invention is characterized in that the transverse extremities of the face plate are conformed directly or by added means in order to give a free access to the front part and/or the rear part of the face plate between the two beams. Each of the beams is conformed in order to obtain a medial portion which appears recessed with respect to each of the end parts of said beams. The external side faces of the beams are made directly or with added material of a guiding rail capable of receiving, with adjustable translation positioning capacity, bearing, positioning, mounting means and the like.
Abstract:
The movable support (5) is provided at its botton surface with a pad (19) made of antifriction material and slides on a lapped reference surface (2). Said movable support comprises discharging jacks (8) which bear indirectly against the frame (8). The effort corresponding to the sum of the independent efforts of each jack must be lower than the effort exerted by the weight of the movable support and of its optional accessories, so as to minimize the difference between the sliding effort at the beginning and the friction effort of displacement in any direction on one plane and so as to limit, in the displacement referential X, Y, Z, the deviations of the geometrical positions of a sensor or of a tool. A motor (26) and a particular reducer drive said movable support in translation X. There is provided a second drive unit for a translation in the direction Y. By using as an accessory a micrometric displacement table and a follower, it is possible to take tridimensional profilometric measurements.
Abstract:
A co-ordinate measuring instrument is designed as a height-measuring instrument. For the purpose of measuring the plane co-ordinates (X, Y), the height measuring instrument is connected through one or more hinged arms to the stationary granite plate. Measurement sensors showing the values of the angles of the hinges and the lengths of the extensions of the hinged arms are associated with the hinges and extensions, respectively. The instrument computer calculates the plane co-ordinates (X, Y) from said values.