DE2030163B2

DE2030163B2 - MARKER FOR CLOCKWORK RUNNING

Info

Publication number: DE2030163B2
Application number: DE19702030163
Authority: DE
Inventors: Jean-Pierre BoIe; Steiner Claude Fontainemelon; Piantino (Schweiz). E02d 5-54
Original assignee: Fabrique dHorlogerie de Fontainemelon S.A., Fontainemelon (Schweiz)
Priority date: 1969-06-19
Filing date: 1970-06-19
Publication date: 1972-09-21
Also published as: CH511097A; FR2046883B1; CH937369A4; FR2046883A1; JPS4811185B1; DE2030163A1

Description

welcher ausschließlich auf der Reflexionsfläche FR reflektiert wird.which is reflected exclusively on the reflection surface FR.

Die Strahlen R„, R_B, R_RB _si_nd nj_ch_t auswertbare Nebenstrahlen, da sie nicht parallel zur Y-Y'-Achse verlaufen.The rays R ", R _B, R _RB _s i _n d nj _c h _t evaluable sub-beams because they do not run parallel to the Y-Y 'axis.

Die Breite des reflektierten Meßstrahles, welche dem Abstand zwischen den beiden Strahlen R₀ und R_D entspricht, ist unabhängig von der Markierungstiefe von dem Augenblick an, wo diese Markierungstiefe F_? größer ist als die erwähnte Mindestmarkierungsriefe P₁.The width of the reflected measuring beam, which corresponds to the distance between the two beams R ₀ and R _D , is independent of the marking depth from the moment at which this marking depth F _? is greater than the mentioned minimum markings P ₁ .

Der Empfänger des Reflexionsstrahles ist ausreichend weit von der Oberfläche der Unruh angeordnet, so daß beispielsweise der in Fig. 2 eujgezeichnete Reflexionsstrahl R_H als nicht auswertbarer Nebenstrahl den Empfänger nicht erreicht.The receiver of the reflection beam is arranged sufficiently far from the surface of the balance wheel so that, for example, the reflection beam R _{H drawn} in FIG. 2 does not reach the receiver as a secondary beam that cannot be evaluated.

Die erhaltenen Resultate sind durch die genauen Werte jedes von den Rillen reflektierten Lichtstrahles sehr genau, unter der Voraussetzung, daß die Schneidkanten des Stichels mit Sorgfalt und unter Berückao sichtigung der vorstehend beschriebenen Charakteristiken ausgeführt sind.The results obtained are by the exact values of each light beam reflected from the grooves very accurate, provided that the cutting edges of the burin are carefully and carefully Taking into account the characteristics described above are carried out.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

ι 2

Light beam and its relative position in the center of the

Claim: groove. Because of the possible changes caused by the

different force with which the burin is applied,

Graver for marking clockwork unrest or by changing the profile of his

for the purpose of visual control of the balance amplitude, 5 head, the groove depth is not clear and the same-

whereby an impinging light beam with known moderately executable and therefore not immediately accurate

To determine characteristics of a surface profiling.

in the form of radial grooves on the balance circumference reflek- The object of the invention is to avoid these benefits and is caught by a receiver, disadvantages and the creation of a burin, which is characterized by an angled io an always equally reflective profiling on the burin tip with at least approximately balance surface are attached can, whereby the flanks, which are symmetrical to the stylus axis (Y-Y ') , reflection is independent of the marking depth.
of which one (FR) towards the middle to from Such a stylus for marking the movement of its section at right angles to the stylus axis, balance balance for the purpose of optical control of the balance balance (DB) and outside of a section (DH) with 15 tude, with an incident light beam with known lower flank angle is limited and the characteristics of a surface profiling when marking the balance wheel surface (S) a reflection surface reflected in the form of radial grooves on the balance wheel circumference is more constant, from which the marking and a receiver is picked up, is the depth (P) of independent angulation and re-to characterized according to the invention by a deflection beam width (R ₀ -R ₁ )) generated. 20 angled stylus tip with flanks which are at least approximately symmetrical to the stylus axis, one of which towards the center to from one to the stylus

chelachse right-angled section and outside of

a section with a smaller flank angle be-35 and when marking the balance surface

The invention relates to an advantageous and functional a reflection surface of constant, from the Mar-

moderate formation of a burin for marking kierungstiefe independent angulation generated. In the

of clockwork balance for the purpose of visual control drawing is in

the balance amplitude, with an incident light F i g. 1 an example embodiment of the

beam with known characteristics on an upper stylus designed according to the invention in one

surface profiling in the form of radial grooves on the un- longitudinal section and in

Rest scope is reflected and recorded by a receiver. F i g. 2 the profile view of one with this burin

is caught. produced Markicrungsrillc shown.

The visual inspection of various elements.

a clock is of extraordinary interest because it is able to act and, on the other hand, a more or less constant one

In order to achieve the function and quality of a watch with this, marking depth, the cylindrical one slides

can be true. Among the numerous measuring body 1 of the graver with slight friction in one

evaluate which are used for control guidance, which is carried out by a hole in a holder 2

is the amplitude of the movement balance is formed by. From this bracket 2 the outer

of great importance, since their measurement has a relatively large face 3 on the balance wheel to be marked.

can be done in a simple manner and immediately evaluated, while the stop 4 of the graver from the

delivers bare measured values. other end face 5 of the holder 2 is held.

The measurement of the balance amplitude is done in the following way - In this way, the stylus head 6 can be

the way in front of you: tical cross-section only by a certain depth in

Two grooves in a radial arrangement on the outside 45 penetrate the surface of the movement balance,
The start of the balance to be measured form a definite The illustration in F i g. 2 shows that the smallest angles to each other. A light source sends RiUentiefe must be at least P ₁ . The tip 6 of a light beam parallel to the balance wheel. The stylus is designed to be angled, with the oscillation of the balance wheel around its axis, each of the two flanks being approximately symmetrical to the stylus axis, two grooves being alternately arranged twice in succession. One of these flanks is illuminated by this beam of light. A surface that borders the center and outside of a section, the so-called reflection flank, reflects which more and less than the flank is inclined towards the axis more and less than the flank itself. On this receiver, which receives the light pulses Way arises in the surface 5 of the balance wheel which is converted into electrical impulses. 55 groove, the cross-section of which consists of four sections. On the basis of the values obtained by the light rays reflected from the lowermost section DB, the upper groove, section DH, left section FG and FG, it is possible, in particular, all the characteristics of the right reflecting surface FR. To determine the complete swinging movement of the balance wheel. The formation of this reflection surface FR takes place only with knowledge of a mathematical coefficient, if the groove has a minimum marking depth P ₁ , for example the quality factor, then results from the possible evaluation of the measured values averaged from the equation of the oscillating movement.

so that the marking of the grooves is very large. The angles of the various sections

ßen accuracy must be carried out. the burin point and thus the side surfaces of the

In particular, the depth of the groove must be known exactly. 65 grooves are only made for example and in the

because the reflection surface depends on this depth, so that if / the direction of the parallel

It is gigantic which of the incident light beam is a coming light beam, this a reflection beam

is hit, and consequently the width of the reflected in direction R parallel to the stylus axis YY 'is generated,