CS205193B1 - Location of magnetic circuits and insertion pieces at magnetic heads - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to the mounting of magnetic circuits consisting of cores and inserts housed in magnetic head housings, in particular heads for measuring equipment, audio-visual equipment and computer technology.

The presently used magnetic circuit arrangements made of tough materials which are predominantly difficult to machine make use of preformed grooves in the housings. The advantage of this method is simplicity, but on the other hand it is difficult to ensure the geometric shape of the groove.

Another method is to create grooves of the magnetic circuit cores by aligning all the parts in complex jigs. The geometric shape of the groove is determined by the relative position of the sheaths of the inserts and the sleeve. The advantage is the groove shape accuracy, but the disadvantage is the lateral play between the cores and the inserts.

Another way is to create spaces for the cores of magnetic circuits by joining a plurality of thin lamellas stacked on top of each other. The individual slats have the shape of the future space for the cores of the magnetic circuits. The disadvantage is the necessity to use demanding locating fixtures and a large lateral clearance between the magnetic circuits.

In all of the above processes, the aforementioned bearings result in undesired play between the cores and the sleeve, between the liners and the cores, and possibly between the liners and the sleeve. This is due to the position of the walls forming the magnetic core cores, which cannot be additionally adapted to the magnetic core cores. Clearances are usually filled with various watering205 193

205 183 by your masses · These locations on the magnetic head work surface retain dirt, delay or directly damage the magnetic information carrier, causing malfunctions and errors in the devices concerned.

SUMMARY OF THE INVENTION The first and second housing parts contact with a portion of the first and second magnetic circuits in the side contact platforms, the parts of the first magnetic circuit being in contact with the rail in the abutment platforms.

Furthermore, it is claimed to associate any number of intermediate housings to the first and second housing parts, depending on the number of magnetic circuits.

The grooves for insertion of the magnetic circuit cores are actually formed by the spaces bounded by the contact surfaces of the two housing parts with the sides of the magnetic circuit cores and the contact surfaces of the cores with the bar.

In order to create these spaces, it is also possible, in terms of the technology used, to use instead of the cores the magnetic circuits of the mandrel pins of the jigs, which are replaced by securing the sleeves against displacement on the common plane by the respective magnetic circuits.

This design ensures a minimum clearance between the two magnetic circuits and the bar and between the magnetic circuits and the individual housing parts.

The invention makes it possible to make spaces for magnetic circuits of goomotrices accurate, the corners of the profiles of these spaces are sharp, without radii of curvature. The negligible thickness of the sleeves 1 is the depth of the prostons for the magnetic circuits.

The solution further allows to maintain the relative position of the magnetic storage compartments in strict tolerances over the entire period, and it is irrelevant whether the magnetic circuits are located symmetrically or not. The narrow tolerance of the grooves relative to each other is particularly advantageous in the arrangement of the magnetic circuits in succession.

With a high degree of accuracy, this solution allows for the establishment of magneto-eyed circuits as well as unequally wide. At the same time, the solution makes it possible to maintain a strict symmetry or other precisely determined position of the magnetic circuit compartments, that is to say, the position of them themselves relative to the contour of the housing parts after their assembly.

From the above summary, the novel solution appears to be particularly suitable for magnetiocular heads with a cylindrical or spherical working surface, where a good contact of the magneto-eyed carrier with the magnetic head working surface is required.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows the spatial arrangement of the individual parts and important surfaces; FIG. Fig. 4 is a simplified view of multiple heads with side-by-side systems; Fig. 6 is a front view of a magnet-eyed circuit arrangement; Fig. 7 front view of the mounting of the magneto-eyed circuits of multiple magnetic heads placed side by side only, Fig. 8 of the sleeve partially slid on the plane before final alignment of the magneto-eyed circuits and Fig. 9 the final position of the individual magneto-eyed circuits

205 193 parts and directions of pressing forces to their final setting.

Fig. 1 shows the relative position of the individual parts and their seating faces, in the case of the magnetic circuits before their alignment with the representation of the individual parts, especially the grooves, limited by the faces 7a of the bar X and the face 7b. where the lateral contact surfaces 6a of the housings 2, 2 ' and the lateral contact surfaces 6b of the first and second magnetic circuits X are also clearly visible, it is described in more detail in FIG. 2.

FIG. 2 shows a basic embodiment of a magnetic circuit arrangement, which are arranged one behind the other with respect to the movement of the magnetic information carrier.

The first housing part 2 and the second housing part χ are slidably mounted on the bar X with minimum clearance. The parts together form a space for accommodating a portion of the first magnetic circuit X and a portion of the second magnetic circuit X. The dimensions are displaceable within a certain range by displacing the first 1 of the second housing part X, X along the bar X. A part of the first magnetic circuit 6 and a part of the second magnetic circuit X are thereby aligned with one another in this space, whereby the first and second housing parts 2, X meet in the lateral contact surfaces 6 with parts of the magnetic circuits 8, X. X in close contact with the bar X in the bearing surfaces X * In this way, the clearance is reduced to the minimum possible in all lateral contact surfaces 6 and in the bearing surfaces X.

A base housing X with a portion of the second magnetic circuit X and an auxiliary housing 8 and a portion of the first magnetic circuit 6 are fastened to the assembly thus formed by means of a screw XX over the working inserts 10. Instead of a screw, another method of uniting the parts as a whole may be used.

The working surface 12 is made up of several parts, in which the contact surfaces 6 and the bearing surfaces X have the smallest possible clearances.

The magnetic head systems themselves are illustrated in cross-section along line A-A in FIG.

3. The overall shape of the magnetic circuits 8 and X with the working inserts 10 and the work surface XX is clearly visible from FIG.

Possibilities of different application of the invention for the placement of magnetic circuits are shown in Figures 4 and 5, wherein Figure 4 shows the possibility of arranging any number of magnetic circuits 8 and X, arranged side by side and one after another, by assigning middle bushings to the first and second parts bushings 2 and χ. Giant. 5 then shows a simplified embodiment of placing magnetic circuits of any number only side by side. The example shown contains parts of two magnetic circuits.

The front view of the multiple embodiment shown spatially in FIGS. 4 and 5 is apparent from FIGS. 6 and 7.

For the construction of magnetic heads, especially for computer systems, where the systems are in series, the method according to Fig. 6 is suitable. For the heads with lower requirements, the arrangement according to Fig. 7 can be used. circuits.

The starting position of the individual parts for their alignment and the final position after alignment is evident from Figs. 8 and 9 as well as the definition of the lateral clearances between the magnetic circuits 8, X and the housing parts

2, 1 ·

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The figures also show the abutment of the magnetic circuits,, 2 ^{to the} χ in the abutments. flat X ·

The invention can be advantageously used in particular in the manufacture of magnetic heads for computer technology, where the demands on manufacturing accuracy are considerable.

SCOPE OF THE INVENTION

Claims (2)

Placing of magnetic circuits and inserts in magnetic heads, characterized in that on the rail (1), the first housing part (2) and the second housing part (3) are slidably mounted, which are in contact with a part of the first magnetic circuit (4) and part a second magnetic circuit (5) in the side abutments (6), wherein portions of both the first and the second magnetic circuit (4, 5) are simultaneously in contact with the bar (1) of the abutment (7). 2. The magnetic circuit and insert arrangement according to claim 1, characterized in that the first housing part (2) and the second housing part (3) are assigned any number of intermediate housings (13), depending on the number of magnetic circuits.