RM 67-01
FLATNESS AS AN END
Like a car manufacturer, we consider the brand as being a general umbrella, which also targets certain ‘niches’. With this in mind, we particularly wanted to introduce a ‘lifestyle’ model with this extremely flat automatic watch based on the emblematic tonneau-shape casing.
The mechanical aspects of creating a thin automatic present their own set of difficulties, but one of the challenges is to pair this type of movement design with a sense of visual depth within the movement—a central tenet of the Richard Mille approach. The extreme skeletonisation seen in the RM 67-01 is one significant avenue to achieving this.
RM 67-01 AUTOMATIC EXTRA FLAT
CALIBRE CRMA6
POWER RESERVE
BASEPLATE AND BRIDGES IN GRADE 5 TITANIUM
The skeletonised baseplate and bridges were subjected to separate and extensive validation tests to meet optimal strength requirements.
DATE DISPLAY
Semi-instantaneous, placed in a vertical aperture at 5 o’clock.
FUNCTION INDICATOR
In a manner similar to a car’s gearbox, the function indicator makes it possible to identify the winding, date-setting and hand-setting positions as the crown is pulled out. The active position is indicated via a hand at 2 o’clock displaying the following functions: W (Winding) – D (Date) – H (Hand Setting).
FREE-SPRUNG BALANCE WITH VARIABLE INERTIA
ROTOR IN PLATINUM
MOVEMENT CHARACTERISTICS
Movement dimensions: 29.10 x 31.25 mm
Thickness: 3.60 mm
Number of jewels: 25
Balance: CuBe, 4 arms, 4 setting screws, moment of inertia 7.5 mg•cm2, angle of lift 50°
Frequency: 28,800 vph (4 Hz)
Balance spring: AK3
Shock protection: INCABLOC 908.22.211.100 (transparent)
CASE
The machine tooling process involves 8 days of adjusting the machines for the bezel, 5 days for the caseband, and 5 days for the back bezel. Prior to this process, developing a methodology for carrying out this series of operations took 145 hours, the drawings for the tools 130 hours, and implementation 180 hours. Each case represents more than 215 separate machining operations.
After machining is completed, the watch case undergoes brushing and polishing, all executed by hand, followed by assembly with sapphire glass and sealants and preliminary water-resistance testing, before being disassembled and undergoing a final quality control. Only then will the movement be mounted within its subtle lines. All of these operations represent an additional 8 hours of work.
DIAL
The mechanical aspects of creating a thin automatic poses their own set of difficulties, but one of the challenges is to combine this type of movement design with a sense of visual depth within the movement—a central tenet of the Richard Mille approach. The use of extreme skeletonisation in the RM 67-01 is one significant avenue explored here, however a new approach to the dial construction also carries the eyes from the edges of the three-layer bezel towards the hour and minute hands in the central area.
The numerals in the RM 67-01 are created from solid metal and mounted on two linked and rigid titanium rails attached directly to the movement.
Finishing
Other features