74 lines
2.0 KiB
Python
74 lines
2.0 KiB
Python
from dataclasses import dataclass
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MM_PER_IN = 25.4
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# A progression of root depths, decreasing by a constant amount each step.
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def linear_depths(start, end, base, increment):
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return {str(depth): base - (depth - start) * increment
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for depth in range(start, end + 1)}
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def depths_in_to_mm(depths):
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return {name: depth * MM_PER_IN for name, depth in depths.items()}
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@dataclass
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class BittingSpecification:
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key_thickness: float
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root_cut: float
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included_angle: float
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positions: int
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TFC: float # To First Cut (center)
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BCC: float # Between Cut Centers
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depths: dict[str, float]
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# https://www.lockreference.com/wp-content/uploads/2019/03/Yale-Disc-Tumbler.pdf
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yale_disc = BittingSpecification(
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key_thickness=0, # TODO
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root_cut=.044 * MM_PER_IN,
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included_angle=90,
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positions=5,
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TFC=.125 * MM_PER_IN,
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BCC=.095 * MM_PER_IN,
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depths=depths_in_to_mm({
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"1": .250,
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"2": .230,
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"X": .220, # also called "7"
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"3": .210,
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"4": .190,
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"5": .170,
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}))
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# https://www.lockreference.com/wp-content/uploads/2018/01/Yale-.019.pdf
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yale_019 = BittingSpecification(
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key_thickness=0, # TODO
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root_cut=.054 * MM_PER_IN,
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included_angle=95, # 110, 95, or 86
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positions=7,
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TFC=.200 * MM_PER_IN,
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BCC=.165 * MM_PER_IN,
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depths=depths_in_to_mm(linear_depths(0, 9, .320, .019)))
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# https://www.lockreference.com/wp-content/uploads/2018/01/Yale-.025.pdf
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yale_025 = BittingSpecification(
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key_thickness=0, # TODO
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root_cut=.054 * MM_PER_IN,
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included_angle=95, # 110, 95, or 86
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positions=7,
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TFC=.200 * MM_PER_IN,
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BCC=.165 * MM_PER_IN,
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depths=depths_in_to_mm(linear_depths(0, 7, .320, .025)))
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# https://www.lockreference.com/wp-content/uploads/2018/09/National-Disc-Tumbler-Single-Sided.pdf
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national_disc_tumbler = BittingSpecification(
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key_thickness=2,
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root_cut=.044 * MM_PER_IN,
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included_angle=90,
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positions=6,
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TFC=.156 * MM_PER_IN,
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BCC=.093 * MM_PER_IN,
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depths=depths_in_to_mm(linear_depths(1, 4, .250, .025)))
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