DE1896595U - TURNING MEASURING DEVICE. - Google Patents

Description

ElIMA Gom.bH Frankfurt / Main, 25 February iyb ~;

Grafstrasse 97 Io / gi

RA.156 515 * 29.2.61 »

Moving iron measuring device

When calibrating moving iron measuring instruments, it is a great advantage if both the sensitivity and the scale character « ter can be set as independently of each other as possible, "Ina" In particular, the workload for the calibration is significantly lower if the scale characteristics for the individual measuring ranges can be brought into sufficient agreement through a simple adjustment option Scales are equipped, as they no longer have to be individually calibrated.

For this purpose it is already known in moving iron measuring mechanisms with a fixed and a movable jacket-shaped iron core to move the cores against each other by a rotary movement around the axis of the movable system and independently of this by an axial movement, whereby the scale character and measurement sensitivity can be set practically independently of one another "Furthermore, it is known in moving iron measuring devices with several fixed cores to influence the scale characteristics to provide an axially adjustable pin iron, the circumferential direction of which can also be changed with regard to its position." can _o

The innovation relates to the last-mentioned type of rotary iron measuring devices with an angular deflection greater than 90 ° and a fixed, however adjustable iron core arrangement which extends over the angular deflection and which consists of several partial cores extending over the angular deflection. It is characterized by this that on one of two concentric, intermeshing tubes at least one core is attached and the other sub-cores are connected to the second tube and also a G-threaded spindle attached to the inner tube is mounted in a G-threaded bore of a corresponding threaded spindle of the outer tube and this in turn in a G-G-ewindebohrung erätegehäuses superimposed _o

As a result of this constructive measure, practically any mutual adjustability of the fixed cores is possible in a simple manner. Measurements have shown that the manufacturing options are sufficient to achieve both the desired measurement sensitivity and a matching scale characteristic in the individual measurement ranges within the required tolerances _e Bainit results in a significant simplification of the milling work without the need for additional means to influence the scale characteristics, as was previously the case are., line Individual calibration for each individual device is not required, as preprinted scales can be used «.

The special features of the furnace are shown in Figures 1 and 1 2 explained in more detail:

Fig. 1 shows the development of a typical arrangement of iron cores of a moving iron measuring device, which is large for an angular deflection ser is constructed as 90 °. The fixed biscuit cores are with 1, 2 and 3 and the iron

core with 4ο

In Fig * 2 the two core tubes 7 and Q ' can be seen, which are housed in the bobbin 6 of the singing coil * The outer core tube § in this embodiment carries the fixed partial core 1 and the inner core tube 7 the two fixed cable cores 2 and 3 » The fixed cores are designed as shown in Fig.1 = The iron core rotatable around the measuring mechanism shaft 5 is again designated by 4 “On the inner core tube 7 is the threaded spindle 8 and the threaded spindle 10 is connected to the outer core tube 9. The threaded spindle 8 is, as proposed, in a threaded hole the threaded spindle 10 and the threaded spindle 10 in turn in a G-threaded hole of the housing 11 ₀ With a locking nut 12, the threaded spindle 10 can be fixed in the housing 11 in any position «

Is is evident ^ that a substantial YerstellmÖglichkeit the fixed cores is given both to the Meßwerkachse and in calibration Tung the Meßwerkachse ₀ In general, the strip-shaped solid cores according to figure are _o 1 is arranged so that the ends do not It follows overlap "that the smallest Adjustment of a core in axial sighting is given by a full turn of the corresponding core tube _o Practice has shown that this adjustment option is completely sufficient if the threads in the spindles are designed as fine threads o By turning one of the core tubes and further by turning both together Core tubes by means of the corresponding threaded spindle ^ the desired measuring sensitivity and a largely matching scale characteristic can be achieved «,

Claims (2)

- ■ - Protection claims η λ upr ^ r.nn η pi \ KA, 1 bb alb ** 9.Lbk> 1. Moving iron measuring device for an angular position greater than 90 with an iron core rotatable about the measuring mechanism axis and a fixed, but adjustable iron core arrangement, which consists of several, over the Winkelaussehlag extending partial cores, characterized in that on one of two concentric interlocking tubes at least one feilkera is attached and the other partial cores with the second! ear are connected and a threaded spindle attached to the inner tube (B) in a threaded hole of a corresponding threaded spindle (TO) of the outer tube is stored and this in turn is stored in a threaded hole in the device housing (11) » 2. Moving iron measuring device according to claim 1, characterized in that one of the core tubes two fixed irons and the other core tube one Festeisen carries "