EP3743538A1 - Axe de pivotement d'un organe reglant - Google Patents
Axe de pivotement d'un organe reglantInfo
- Publication number
- EP3743538A1 EP3743538A1 EP19702055.5A EP19702055A EP3743538A1 EP 3743538 A1 EP3743538 A1 EP 3743538A1 EP 19702055 A EP19702055 A EP 19702055A EP 3743538 A1 EP3743538 A1 EP 3743538A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axis
- manufacturing
- heat treatment
- regulating member
- treatment step
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 26
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052709 silver Inorganic materials 0.000 claims abstract description 11
- 239000004332 silver Substances 0.000 claims abstract description 11
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 11
- 239000011701 zinc Substances 0.000 claims abstract description 11
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 10
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052737 gold Inorganic materials 0.000 claims abstract description 8
- 239000010931 gold Substances 0.000 claims abstract description 8
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 8
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 7
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052796 boron Inorganic materials 0.000 claims abstract description 7
- 229910052702 rhenium Inorganic materials 0.000 claims abstract description 7
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052707 ruthenium Inorganic materials 0.000 claims abstract description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 23
- 239000000956 alloy Substances 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 18
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 238000011282 treatment Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000004381 surface treatment Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- 238000003754 machining Methods 0.000 description 10
- 229910000734 martensite Inorganic materials 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 9
- 238000005498 polishing Methods 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000005291 magnetic effect Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000010979 ruby Substances 0.000 description 3
- 229910001750 ruby Inorganic materials 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910016006 MoSi Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910001260 Pt alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- VCTOKJRTAUILIH-UHFFFAOYSA-N manganese(2+);sulfide Chemical class [S-2].[Mn+2] VCTOKJRTAUILIH-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- SWELZOZIOHGSPA-UHFFFAOYSA-N palladium silver Chemical compound [Pd].[Ag] SWELZOZIOHGSPA-UHFFFAOYSA-N 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- G04B13/026—
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/04—Alloys based on a platinum group metal
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/06—Alloys based on silver
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/14—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of noble metals or alloys based thereon
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B1/00—Driving mechanisms
- G04B1/10—Driving mechanisms with mainspring
- G04B1/16—Barrels; Arbors; Barrel axles
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B13/00—Gearwork
- G04B13/02—Wheels; Pinions; Spindles; Pivots
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B15/00—Escapements
- G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/04—Oscillators acting by spring tension
- G04B17/06—Oscillators with hairsprings, e.g. balance
- G04B17/063—Balance construction
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
- G04B43/007—Antimagnetic alloys
-
- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
Definitions
- the present invention relates to the field of watchmaking. It relates, more particularly, to a pivot axis of a regulating member of a clockwork mechanical movement and more particularly to a pendulum, anchor or escapement axis made of a non-magnetic material.
- clock-type pivot axes such as a rocker shaft, an anchor rod or an escape pinion consists in carrying out a succession of operations making it possible, from a bar of raw material, to form an axis having precise dimensional characteristics as well as a sufficient mechanical resistance with regard to the envisaged application.
- the clockwise pivot axes are made in a known manner by machining operations or precision turning, from a carbon martensitic steel bar. These machining operations make it possible to define the functional surfaces necessary for the proper functioning of the axis (clearances, stops, pivots, etc.) and the assembly of the various components (balance seat, bearing surface, bearing surface of the ferrule , etc.).
- the neckline then undergoes a deburring operation and then one or more heat treatment operations comprising at least one quenching to improve the hardness of the axis and income to improve toughness.
- a rolling operation of the pivots intended to improve the surface state, the hardness and the geometric precision, is generally carried out during or at the end of manufacturing. The rolling operation can be compared to an operation of grinding and / or polishing the pivots.
- the pivot axes for example the balance axes, used in a traditional manner in the mechanical clockwork movements are made from carbon martensitic steel bars having addition elements of the type lead and / or manganese.
- Manganese is generally present in steels in the form of manganese sulphides and allows a regular fragmentation of the cutting chip.
- Lead tends to bind to non-metallic inclusions present in steel, or is in the form of elementary particles. It acts as a lubricant, reduces the coefficient of friction at the tool / cutting area interface and limits the formation of a material deposit on the cutting edge of the tool.
- These addition elements therefore have the common objective of improving the machinability of the steel.
- a steel of this type can be supplied from a large number of suppliers under the name 20AP or 1.1268 + Pb.
- the lead martensitic steel has, after quenching and tempering treatments, high mechanical properties in adequacy with the stresses encountered by the pivot axes during their operation.
- the pivots of an axis made of lead martensitic steel have a hardness exceeding 600 HV1 after heat treatment and rolling. Such hardness values guarantee an optimum wear resistance for the oscillator's proper operation over time.
- lead martensitic steel has a major disadvantage: its sensitivity to magnetism.
- the environment in which watches operate has has evolved considerably in recent decades. Electronic devices and accessories incorporating permanent magnets have multiplied, exposing the watches, and thus the regulating organs of the latter, magnetic fields increasingly high and more and more frequent.
- the lead martensitic steel commonly used for the production of balance shafts has a non-negligible residual field after exposure to an external magnetic field.
- the proximity of the axis with the spiral generally made of ferromagnetic material, makes it a particularly strategic component when it is desired to improve the magnetism resistance of watches.
- the document CH707503 describes a pivot axis formed of a composite material having a metal matrix comprising at least one metal selected from nickel, titanium, chromium, zirconium, silver, gold, platinum , silicon, molybdenum, aluminum or an alloy thereof, said matrix being charged with hard particles selected from WC, TiC, TaC, TiN, TiCN, Al 2 O 3, ZrO 2, O 2 O 3, SiC, MoSi 2, AlN or a combination of these, in order to limit the sensitivity of the axis to the magnetic fields.
- the hardness of said composite material is greater than or equal to 1000 HV1.
- the solution described here is not optimal.
- Cutting tool machining of metal matrices loaded with hard particles generates premature tool wear. In operation, the pivoting of such an axis in a ruby bearing also generates premature wear at the bearing.
- Document CH707504 describes a titanium or titanium alloy pivot pin in order to limit its sensitivity to magnetic fields. At least the outer surface of the pivots is partially or fully hardened relative to the axis core to a predetermined depth, the outer surface has a hardness greater than 800 HV1. The solution described here is not optimal. The superficial hardening of the pivots adds a step in the already complex process of obtaining a pendulum axis. In addition, titanium alloys require special precautions during machining, particularly with regard to the risk of fire.
- the document CH707505 describes a steel pivot axis of the austenitic type, a cobalt alloy of the austenitic type or a nickel alloy of the austenitic type to limit its sensitivity to magnetic fields. At least the outer surface of the pivots is hardened relative to the heart of the axis to a predetermined depth, the outer surface has a hardness greater than 1000 HV1. The solution described here does not seem optimal.
- the superficial hardening of the pivots adds a step in the already complex process of obtaining a pendulum axis. This hardening occurring after the step or ends of the pivots, the handling precautions taken during this processing step must be important to avoid the risk of marking or bending the pivots.
- EP3273303 discloses a balance shaft made of a non-magnetic alloy of copper. During the manufacture of the axis, the pivots are rolled or polished in order to remove an extra thickness of material and thus to reach the final dimensions and surface condition. On the other hand, the surface is hardened by means of a heat treatment and / or thermochemical diffusion or ion implantation of other atoms, to a predetermined depth. This alloy, after treatment, may have an interesting hardness, greater than 600 HV, but the treatment processes used are complicated, require specialized equipment and are difficult to control, particularly with regard to ion diffusion.
- EP3273304 also discloses an axis made of a similar alloy, which is provided with a layer of hard material deposited on its surface. Ideally, it is intended to avoid an additional deposit of surface, which is again complicated to perform and requires specialized equipment.
- US9194024 discloses an alloy for jewelry, whose composition is chosen to obtain a substantially white color, comparable to platinum alloys. After curing by aging, the alloy reaches a hardness up to about 240 HV, which is insufficient for a watch axis.
- the object of the present invention is to provide an axis made of a nonmagnetic material as an alternative to the various solutions of the prior art and remedying, at least partially, their disadvantages.
- the invention relates to a pivot axis of a regulating member of a clockwork mechanical movement made of an alloy comprising or consisting of weight:
- the invention relates to an alloy of the type consisting of 41% of palladium, 37.5% of silver, 20% of copper, 1% of zinc and 0.5% of platinum.
- the invention also relates to a method of manufacturing a pivot axis of a regulating member of a mechanical clockwork movement comprising the following steps:
- an alloy bar comprising between 25% and 55% of Palladium, between 25% and 55% of Silver, between 10% and 30% of Copper, between 0% and 5% of zinc, between 0% and 2% % of one or more elements selected from rhenium, ruthenium, gold and platinum, and between 0% and 1% of one or more elements selected from boron and nickel;
- the manufacturing method may further comprise a curing heat treatment step between the machining and surface treatment steps.
- Fig. 1 is a representation of a pivot axis according to the invention, in the cleavage stage;
- Fig. 2 is a representation of a pivot axis according to the invention, the rolled stage
- - Fig. 3 is a representation of a pivot axis according to the invention, in the finished stage;
- - Fig. 4 is a representation of a pivot axis according to the invention, showing the different thicknesses that may be involved in the process.
- the invention relates to a pivot axis of a regulating member of a mechanical clockwork movement, and more particularly to a balance beam axis, anchor or escape mobile.
- the Applicant has identified an alloy family having properties of particular interest for application to axes of mechanical movement regulating member, especially in terms of magnetism and oxidation resistance.
- the alloys of this family have, by weight:
- the alloys in question comprise by weight:
- an alloy of the type consisting of 41% of palladium, 37.5% of silver, 20% of copper, 1% of zinc and 0.5% of platinum does not present an attractive action. detectable when exposed to a permanent magnet. Neither does it exhibit measurable remanent magnetization after exposure to the magnet.
- Palladium-Silver-Copper alloys exhibit a higher oxidation resistance than that of carbon martensitic steels thanks in particular to the presence of palladium, a chemical element of the platinum group.
- Palladium makes it possible to improve the following characteristics of the alloy, which are particularly interesting in the case of use for a pivot axis: chemical inertness, resistance to corrosion and oxidation, low coefficient of thermal expansion and mechanical durability.
- Another aspect of the invention relates to a method of manufacturing a pivot axis of a regulating member which we will now describe the steps.
- the first step in the process of obtaining an axis according to the invention is to provide a free-cutting bar of the alloy Palladium-Silver-Copper having a composition belonging to the family of alloy such as defined above. Different shades are available from various suppliers. The latter perform the steps of alloying and the steps of shaping the bar (drawing, drawing ...) to provide a bar in the standard dimensions of bar turning. Generally 2-3mm in diameter over 2000-3000mm long. It goes without saying that the chemical composition of the bar will be similar to that of the axis made from this bar.
- the Vickers hardness of the stretched material for producing the axis according to the invention is of the order of 260-310 HV1. After thermal hardening at 380-420 ° C, the hardness value rises to 460-500HV1. This heat treatment can last between 30 minutes and 2 hours, more particularly between 45 minutes and 1 hour 30 minutes, even more especially for 1 hour, and hardness value after curing remains lower than can be found on a 20AP steel after rolling, typically more than 700HV1.
- the curing heat treatment can be performed at any time of the process of obtaining the axis.
- This hardening can be carried out on the receiving bar if the machining requires a high hardness.
- the hardening is performed after machining and before the step or steps of treatment of the surface state of the axis.
- the next step in the process of obtaining an axis according to the invention is to shape it by a bar turning step. This is performed in a traditional manner on the same equipment as those used to machine martensitic carbon steel axes according to the prior art. An adaptation of the cutting parameters is necessary in order to optimize the quality and the efficiency of the machining step.
- the axis of the balance its radius being very small, even at high spindle speed, the cutting speeds achieved during machining are limited.
- the balance shaft has two zones of small diameter, the pivots 10 located at the ends of the axis as well as several zones of greater diameter forming the body of the axis 20.
- a cutting speed of 20 to 23 m / min with an advance of 0.0015 mm / rev.
- a cutting speed of 20 to 23 m / min and an advance of 0.002 mm / rev to 0.005 mm / rev can be used.
- FIG. 2 illustrates, by way of example, a balance shaft after the bar turning step.
- Figure 3 illustrates, by way of example, a balance shaft after the polishing step.
- the bar turning step will make it possible to obtain the profile 2 at the pivot with an excess thickness (e1) with respect to the profile 1.
- the polishing step will bring the profile of the pivot to its level. final profile 1.
- the extra thickness (e1) is typically of the order of 2pm to the diameter but can be adapted according to the polishing envisaged (duration, type of abrasive particles used ).
- an excess thickness (e2) corresponding to the amount of material removed during this step grinding or rolling must be added to the workpiece or to the pivots at the bar turning stage.
- the extra thickness (e2) is typically of the order of 20 ⁇ m over the length and 5 ⁇ m over the diameter but can be adapted in rolling or grinding function envisaged.
- the turning must therefore be at the level of the profile 3, as shown in Figure 4.
- the rolling will bring the pivot at the level of the profile 2 as shown in Figure 4.
- a treatment of the surface condition may be added at the end of the process to get Profile 1.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Adornments (AREA)
- Sliding-Contact Bearings (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00093/18A CH714594A1 (fr) | 2018-01-26 | 2018-01-26 | Axe de pivotement d'un organe réglant de mouvement mécanique horloger. |
PCT/EP2019/051771 WO2019145434A1 (fr) | 2018-01-26 | 2019-01-24 | Axe de pivotement d'un organe reglant |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3743538A1 true EP3743538A1 (fr) | 2020-12-02 |
EP3743538B1 EP3743538B1 (fr) | 2022-09-07 |
Family
ID=61231019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19702055.5A Active EP3743538B1 (fr) | 2018-01-26 | 2019-01-24 | Axe de pivotement d'un organe reglant et son procédé de fabrication |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3743538B1 (fr) |
CH (1) | CH714594A1 (fr) |
WO (1) | WO2019145434A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3800511B1 (fr) * | 2019-10-02 | 2022-05-18 | Nivarox-FAR S.A. | Axe de pivotement d'un organe réglant |
CH716669B1 (fr) * | 2019-10-03 | 2023-02-15 | Richemont Int Sa | Procédé de fabrication d'un arbre de pivotement de balancier. |
EP3865955A1 (fr) * | 2020-02-17 | 2021-08-18 | The Swatch Group Research and Development Ltd | Procédé de fabrication d'une pièce mécanique d'horlogerie monobloc |
EP4033307A1 (fr) * | 2021-01-22 | 2022-07-27 | ETA SA Manufacture Horlogère Suisse | Ensemble comprenant un mobile tournant en matériau amagnétique et un coussinet muni d'un cône |
WO2022223479A1 (fr) * | 2021-04-20 | 2022-10-27 | Acrotec R&D Sa | Procede de fabrication d'un axe de pivotement de type horloger |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5833774A (en) * | 1997-04-10 | 1998-11-10 | The J. M. Ney Company | High strength silver palladium alloy |
US9194024B1 (en) * | 2010-05-17 | 2015-11-24 | Stuller, Inc. | Jewelry article of white precious metals and methods for making the same |
KR20140113920A (ko) * | 2011-12-27 | 2014-09-25 | 가부시키가이샤 토쿠리키 혼텐 | 전기·전자기기용 Pd 합금 |
CH707503A2 (fr) | 2013-01-17 | 2014-07-31 | Omega Sa | Axe de pivotement pour mouvement horloger. |
CH707505B1 (fr) | 2013-01-17 | 2017-07-31 | Omega Sa | Axe de pivotement en métal pour mouvement horloger et procédé de fabrication d'un tel axe. |
CH707504B1 (fr) | 2013-01-17 | 2017-05-15 | Omega Sa | Axe de pivotement en métal pour mouvement horloger et procédé de fabrication d'un tel axe. |
EP3273304B1 (fr) * | 2016-07-19 | 2021-11-10 | Nivarox-FAR S.A. | Pièce pour mouvement d'horlogerie |
EP3273303A1 (fr) * | 2016-07-19 | 2018-01-24 | Nivarox-FAR S.A. | Pièce pour mouvement d'horlogerie |
-
2018
- 2018-01-26 CH CH00093/18A patent/CH714594A1/fr unknown
-
2019
- 2019-01-24 EP EP19702055.5A patent/EP3743538B1/fr active Active
- 2019-01-24 WO PCT/EP2019/051771 patent/WO2019145434A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
CH714594A1 (fr) | 2019-07-31 |
EP3743538B1 (fr) | 2022-09-07 |
WO2019145434A1 (fr) | 2019-08-01 |
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