DE8217948U1 - FORCE MEASURING DEVICE - Google Patents

Description

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Suleiman 7906/62

"Force measuring device"

The invention relates to a force measuring device for Determination of both in the direction of the spatial coordinates X, Y, Z effective forces as well as to determine the Torque for use in machines, for example build in order to create several interdependent forces with different "directions in their mutual co-operation" to be able to grasp the slope.

Known devices of this type have piezoelectric ones Force transducer o The latter, however, are relatively expensive and difficult

temperature sensitive.

The object of the invention now eats it with simple means and measures a high sensitivity force measuring device « speed, high natural frequency, higher measurement reliability, lower MeBuege, lower temperature sensitivity, lower To create hysteresis and low cross-sensitivity, which is also handy and universal in its use.

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DiB's solution to this problem is characterized by

one that from the OherBEitB BinerA / crrichtung to the stationary Bracket having base plate four identical cylindrical, to the base plate directed at right angles Strive columns, which are evenly distributed on a circle, also the columns one to the Baeiaplatte, square measuring «* arranged in parallel Carrying the plate, with the LMngaachBen of the SMulen with equal distance to each other from the center of the measuring plate the diagonals of the measuring plate cross, also the measuring plate one plane-parallel and concentric to the latter arranged, circular diaphragm, within these connection devices for a workpiece are arranged on which the acting ears are measured should be, henceforth at the top and at the bottom the diaphragm in pairs, four opposite one another, evenly distributed around the circumference of the diaphragm. arranged, radially directed strain gauges » are added and that on the circumference of all columns ache · « Further strain gauges are arranged parallel to one another, in such a way that they are also symmetrical to the X-axis rectified core diameter sent to each other SMuleneeiten each arranged two strain gauges

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Bind, furthermore symmetrical, also equal to the Z-axis » facing SMuldimESBer facing away from each other Column sides jeuieils two outer strain gauges arranged bind and that symmetrical to one all Columns in the middle crossing circles facing away from each other Sides of columns, third pairs of bracing strips arranged are, tdobgi the X «axis and the Y« axis to the edges the measuring plate jeuieils run parallel

This results in a multi-component force measuring device, with which by means of the strain gauges arranged on the membrane the in the direction of the Y ~ spatial coordinate occurring forces and by means of the strain gauges arranged on the columns, the in the direction of the X «axis and de: r Z «axis occurring forces and the torque exactly can be determined.

It is advantageous if the membrane assigned Strain gauges are each arranged in the direction of the measuring plate diagonals.

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A conducive and also beneficial in terms of the task solution further development of the vcrrbe which is favorable in terms of production technology »- schrisbenen object is that the membrane are formed by identical annular grooves arranged coaxially on both sides of the measuring plate.

It is also advantageous if on the membrane at least one of the other pairs of strain gauges are provided, which on the one hand are evenly distributed over the circumference of the membrane and on the other hand to the X-axis beziii. running in the same direction as the Z-axis symmetrically are arranged.

This means that typists can now also be read precisely determine.

An embodiment of the invention is shown in the drawing and is described in more detail below. Show it

1 shows a power trim device in a front view, partly according to the section line I-I shown broken away according to FIG. 2;

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Fig. 2 is the same seen from above;

FIG. 3 likewise in the direction ΙΙΙ »ΙΐΙ according to FIG. 1 seen.

Here strive from a flat base plate 1, the several slots 2 arranged in a distributed manner for receiving of fastening screws, four identical, cylindrical, to the base plate 1 directed at right angles Pillars 3 off.

The pillars 3 are evenly distributed on a circle if arranged concentric to the center of the base plate 1 is arranged.

On the pillars 3 a plane-parallel to the base plate, square measuring plate 5 is attached, the Center arranged vertically above the center of the base plate 1 and whose hands are arranged to run in the same direction as the edges of the base plate.

In addition, the longitudinal axes of the columns 3 cross the diagonals of the measuring plate 5.

In the measuring plate 5, a circular ring-shaped membrane 6 is provided, which is arranged concentrically to the center thereof is formed by the same ring grooves 7 arranged on both sides of the membrane.

Suleiman 7906/82

Within the space a a workpiece 8 is detachably attached to the measuring plate 5, by which the acting forces are measured. On the top and the bottom of the membrane 6 are four each, each in the direction of the measuring plate diagonals extending strain gauges 9, by means of which the occurring in the direction of the Y «space coarriinate Forces can be determined.

In addition, on all pillars there are 3 more, each axially parallel strain gauges provided, namely

1. two pairs of strain gauges 10,

2. two pairs of strain gauges 11 and

3. two pairs of elongation strips 12.

The strain gauges 10 are in the same direction as that of the X-axis Column diameter, the strain gauges 11 to the S-coil diameter rectified to the Z-axis and the strain gauges 12 are arranged symmetrically to the circle on opposite column sides, the Strain gauges 10 and 11 to determine the bezui in the direction of the X «. ZwAchae occurring forces and the strain gauges 12 are used to determine a torque.

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Also, according to the membrane 6 οιεχϊεγε DEhnungsmEBstrsifEnpaarE 13 to determine Typing professionals seen diametrically and in the direction of that the Z-axis are continuously arranged.

THE SHOWN, MADE OF STEEL FORCE MEASURING DEVICE has a length of approx. 36D mm, a width of approx. 220 mm, a height of approx. 105 mm and its own weight of approx. 26 kg. The diameter of the membrane G is approx. 160 mm.

The force measuring device has the following measuring ranges:

a. in the direction of the X-axis 10 kl \ l,

b. in the direction of the Z-axis approx. 10 kl \ l,

c. in the direction of the Y «axis approx. 6 klM,

d. Torque approx. 8DO Nm.

All new in the description and / or drawing disclosed Individual and combination features are classified as essential to the invention.

Claims (4)

ο · · rf * r «• 3 β · · · PATENT ADVOCATE. '. '\'. '. I * · ,, · '. ·]. File number: Dipu-ING. CONRAD KÖCHLING. CONRAD-JOACHIM KÖCHLING Fleyer Strasse 135, 5S00 Hagen Note: Dipl.-Ing. Call (02331) 81164 + 85033 QBSE telegrams: Patentkechllng Hagen ^ aaeii Accounts: Commerzbank AG. Hegen BrunnEFlStr. 15 (BLZ 4SO 400 42) 3515095 Sparkasse Hagen 100 012 043 ςηΑΠ I firiormrhpi ri Postschecit: Dortmund 6989- «0 DÖÖU LUDEnSCnElD 79G6 / 82 RAJ. Serial No. of June 21, 1982 VNR: 11 58 51 Protection claims: 1. KraftmEBeinrichtung for determining both forces in the direction of the spatial coordinates X, Y, Z and for determining the torque, characterized in that dsB from r <er top of a device (2) for the stationary shark! The base plate (1) supports four identical cylindrical columns (3) directed at right angles to the base plate, which are arranged evenly distributed on a base plate (U) , and the columns have an especially square measuring plate (5) arranged parallel to the base plate (1). wear, üjobei the longitudinal axes of the columns (3) cross the diagonals of the measuring plate (5) at the same distance from one another from the measuring plate center, and the measuring plate (5) also has a circular annular membrane (6) arranged plane-parallel and concentrically to the latter, usually within this üJerkstück -Connection devices are arranged, still on the top and bottom of the membrane (6) 3 J]] 11 I) Π Suleiman 79D6 / 82 in pairs opposite four on the circumference tier MEmfarana (6) evenly distributed, radially directed strain gauges (9) are attached and that on the circumference of all columns (3) each axially parallel directional further strain gauges are arranged, and ztüar in such a way that symmetrical to that to the X-axis Column diameters aligned in the same direction on mutually applied column sides, each arranged with strain gauges (1D) are, furthermore, symmetrical to that which is in the same direction as the Z axis Column diameter on opposite column parts two further stretch marks (11) are arranged in each case and that all SSulen (3) are symmetrical about one in the middle intersecting circle (^) on sides facing away from each other third pairs of strain gauges E (12) are arranged, luobei the X-axis and the Y-axis to the edges of the measuring plate (5) each run parallel. ■ I ti • 4 0 14 JI ■ » 9 t · · * · I I I I Il II ti Il lilt SulJiman 7906/82 "3 ~ 2. Force measuring device according to claim 1, characterized in that the membrane (6) assigned Strain gauges (9) jeuieila in the direction of the Measuring plate diagrams arranged bind. 3. KraftmeBeinrichtung according to claim 1 or 2, characterized characterized in that the membrane (6) is arranged coaxially to one another by means of the measuring plate (5) on both sides the same annular grooves (7) are formed. 4. Force measuring device according to one of claims 2 or 3, characterized in that at least two additional pairs of strain gauges (13) are attached to the membrane (6) are provided, which on the one hand are evenly distributed over the circumference of the membrane (6) and on the other hand to the XwAchae bezbi. iur Z ~ AchBB rectified running symmetrically are arranged. DIPL.-ING. CONRAD KöCHlING PATENT ADVOCATE