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Rough and finish machining on both sides is sometimes necessary. Allow about 0.4 mm (0.015 in) stock for finish machining. | stock.allowance = 0.4 mm (0.015 in) (for finish machining) |
The ratio of rolled hem opening to sheet thickness should be greater than or equal to the specified value, which is configurable. The default ratio is 1.0 | rolled_hem.opening/sheet.thickness >= configurable_specified_value && default_ratio == 1.0 |
Assembly should contain a list of preferred or allowed components that are configured by the user. | Assembly.Component List = Preferred/Allowed Components |
Beam is focused to concentrate it within a very small area, which then has a tremendous concentration of energy. The pulse duration is only about 0.002 s and normally occurs about 10 times per second. | pulse.duration = 0.002 s && frequency = 10 Hz |
The deflection of a beam subjected to a load should not exceed a certain limit. | Beam.Deflection <= Limit |
Provide a radius at the base of molded parts that is 25% to 40% of the wall thickness. | 0.25 * WallThickness <= RadiusAtBase <= 0.4 * WallThickness |
The minimum radius of the fillet on the machined edge should be at least 0.0625 inches. | Fillet.Radius >= 0.0625 inches |
A common tolerance for counterbored depths is 0.010 in, although tighter tolerances usually can be held if necessary. | counterbored_depths.tolerance = 0.010 in (tighter tolerances possible |
For carbon steel, the minimum Wall thickness for carbon steel is 3.2 mm & 4.8 mm for stainless alloys | Carbon Steel.Wall Thickness >= 3.2 mm
&&
Stainless Alloys.Wall Thickness >= 4.8 mm |
the length of such areas should normally not exceed
2.5 times the minimum workpiece diameter. | turned_area.length ≤ 2.5(0.010in) * minimum(workpiece.diameter) |
The tensile strength of the part must be at least 50 kpsi. | Part.TensileStrength >= 50 kpsi |
The width of a section to be hot-stamped should be at least 0.25 mm (0.010 in). | section_to_be_hot_stamped.width ≥ 0.25 mm (0.010 in) |
The maximum allowable deflection for the plate is 0.002 inches. | Deflection <= 0.002 inches |
The surface roughness should be no greater than 32 micro-inches Ra. | Surface.Roughness <= 32 micro-inches Ra |
Minimum section typically 3 mm for light alloys, 6 mm for ferrous alloys | Minimum.Section >= 3 mm (for light alloys) && Minimum.Section >= 6 mm (for ferrous alloys) |
the minimum distance between the dowel hole edge and other dowel hole edge should be greater than or equal to 4 times Sheet thickness | distance(hole1.edge, hole2.edge) >= 4 * sheet.thickness |
The default configured aspect ratio of the total length of the part to its minimum diameter is less than or equal to 8.0. | diameter/length <= 8.0 |
The ratio of the radius of a teardrop hem to sheet thickness should be greater than or equal to the specified value, which is configurable. The default ratio is 0.5. | teardrop_hem.radius/sheet.thickness >= configurable_specified_value && default_ratio == 0.5 |
minimum draft angle for forging should be a minimum of 2 degrees | Draft_angle >= 2 degrees |
Wall thickness for aluminum ranges from 1.0 mm (0.040 in) upward. | Aluminum.Wall Thickness >= 1.0 mm |
It is recommended that spacing between ribs should be at least 2 times the nominal wall. | Spacing(Ribs) >= 2 * Wall.Thickness |
The minimum distance between the inside edge of the bend and the outside of the hem should be 5 times material thickness plus bend radius plus hem radius. | distance(bend.inside_edge,hem_outside) ≥ 5 * material_thickness+ bend.radius+ hem.radius |
For Boss Height to Outer Diameter ratio, the value should be less than or equal to 3.0. | Boss.Height / Boss.OuterDiameter <= 3.0 |
The minimum radius at internal corners should be greater than or equal to 0.5 mm (0.0196 inches). | Internal Corner.Radius >= 0.5 mm (0.0196 inches) |
The clearance between the bearing and the shaft should be no greater than 0.001 inches. | Clearance(Bearing, Shaft) <= 0.001 inches |
For a fastener, axial clearance or radial clearance or both should be greater than or equal to the specified value. | Fastener.Axial Clearance >= Specified Value (with unit) or Fastener.Radial Clearance >= Specified Value (with unit) |
Round bars should be from 6 to 250 mm (1⁄4 to 10 in) in diameter | 6mm <= Round Bar.diameter <= 250mm |
To prevent excessive tool wear, the machining allowance should not be less than 0.25 mm (0.010 in). | Machining.Allowance >= 0.25 |
The size range of commercial screw threads is vast. Screw threads as small as 0.3
mm (0.012 in) in diameter and 140 threads per centimeter (360 per inch) are used in
watches. | 0.3 mm ≤ screw_thread_diameter &&140 threads/cm ≤ screw_thread_pitch |
It is recommended that spacing between bosses should be at least 2 times the nominal wall thickness. | spacing(boss1, boss2) >= 2 * nominal_wall.thickness |
At the end of the bored hole, the default configured value for Relief should be greater than or equal to 3 % of the diameter of the bored hole.Blind bored holes should be defined with a tool relief (i.e., depth of a bored hole = depth of a pre-bored hole + relief amount) at the end of the hole | Relief.Depth >= 0.03 * Hole.Diameter |
General guidelines suggest that a ratio of groove distance to diameter should be <= 3.0. | Groove Distance./Diameter. <= 3.0 |
The process is adaptable to very-fine-pitch boards, with center-to-center lead spacings of 0.38 mm (0.015 in). | lead.spacing = 0.38 mm (0.015 in) |
The surface cut by the tool is concentric with the hole and at an angle of less
than 90° to the axis of the hole. | angle(tool.surface_cut,hole.axis) < 90° |
When bending component members, use the largest acceptable radii, not less than 3 times material thickness. | bending_component_members.radius ≥ 3 times material thickness |
rib thickness at its base should be around 0.6 times the local wall thickness. | Rib.Thickness (at base) >= 0.6 * Wall.Thickness (local) |
For Boss Outer Diameter to Inner Diameter ratio, the value should be less than or equal to 2.0. | Boss.OuterDiameter / Boss.InnerDiameter <= 2.0 |
The allowable stress in the material should be no greater than 30 ksi. | Allowable.Stress <= 30 ksi |
The coefficient of friction between the two surfaces should be no greater than 0.2. | CoefficientOfFriction <= 0.2 |
the minimum distance from a dowel hole edge and bend should be at least 4 times sheet thickness. | Distance(Dowel Hole Edge, Bend) >= 4 * Sheet.Thickness. |
Tungsten Filament wire may be only 10 to 15 um in diameter. | 10 um <= Tungsten_Filament_Wire.Diameter <= 15 um |
minimum narrow region thickness should be greater than or equal to 3.0 mm (0.118 in). The maximum ratio between depth and thickness of the restricted region should be less than or equal to 10 | 3.0 mm <= Min. Narrow Region Thickness <= Depth/Thickness ratio <= 10. |
the angles of 0.5 ° to 2 ° per side, recommended for both inside and outside walls. | Wall.Angle >= 0.5 degrees && Wall.Angle <= 2 degrees |
Raised sections located at the bottom of a straight sidewall of a part should be at least 6.3 mm (0.250 in) from the sidewall. | distance(raised_sections_at_part.sidewall,sidewall) >= 6.3 mm (0.250 in) |
the wall thickness should not deviate more than 25 % from the nominal wall thickness. | Nominal.Wall.Thickness <= 0.25 |
Minimum hole spacing should be two times sheet thickness. | hole_spacing >= 2 * sheet_thickness |
Most cutoff processes will provide cut lengths down to about 1.3 mm
(0.050 in). | cut.length ≤ 1.3 mm (for most cutoff processes) |
The surface hardness should be no less than 800 HV. | Surface.Hardness >= 800 HV |
Ribs should have a top radius equal to one-half the thickness. | Ribs.top_Radius = 0.5 * Ribs.Thickness |
Machining allowances in sand casting usually in the range 1.5–6 mm | 1.5 mm <= Machining.Allowance <= 6 mm |
It is recommended that minimum draft on outer surface of the boss should be greater than or equal to 0.5 degree and on inner surface it should be greater than 0.25 degrees | draft_outer_surface(boss) >= 0.5 && draft_inner_surface(boss) > 0.25 |
Roundness deviations normally can be held within 0.0025 mm (0.0001 in) on
radius, and 0.00025 mm (0.000010 in) is not unusual. | roundness.radius_deviation <= 0.0025 mm (0.0001 in) && roundness.deviation.radius.notunusual <= 0.00025 mm (0.000010 in) |
The minimum distance between two dowel holes should be at least twice the dowel diameter. | Distance(DowelHole1, DowelHole2) >= 2 * Dowel.Diameter |
The ratio of opening (spacing between hem edge and part) to sheet thickness should be greater than or equal to the specified value, which is configurable. The default ratio is 0.25. | opening/sheet.thickness >= configurable_specified_value && default_ratio == 0.25 |
As a general guideline, in part, wall thickness should not deviate more than 25% from the nominal wall. | abs(Wall.Thickness - Wall.Thickness (nominal)) / Wall.Thickness (nominal) <= 0.25 |
The minimum stock thickness for arc-welding magnesium is 0.8 mm | min(stock.thickness) >= 0.8 mm |
In Sand casting draft angle ranging 1–5 degree | 5 degrees >= Draft.Angle >= 1 degree |
Temperatures ranging from 320 to 480°C (600 to 900°F) and times from 0.8 to 3 are common for beryllium copper. | temperature(berylliumcopper) ∈ [320, 480] °C && time(berylliumcopper) ∈ [0.8, 3] |
Ribs should not be higher than 2.5 to 3.0 times the wall thickness. | Rib height ≤ 2.5 to 3.0 times wall thickness |
The default configured value for the Tool relief angle on outer diameter profile is 58 deg or less. | tool_relief.angle <= 58 degrees |
The recommended rib thickness should not exceed 60 percent of the nominal thickness. Plus, the rib should be attached with corner radii as generous as possible. | rib.thickness < 0.6 * nominal_thickness (corner_radius should be as generous as possible) |
The default configured value for the Tool relief angle on outer diameter profile is 58 deg or less. | tool_relief.angle <= 58 degrees |
Minimum clearance between any two components in the assembly should be greater than or equal to a user-specified value. | Clearance(Component1, Component2) >= Specified Value |
The base radius of the boss should be greater than or equal to 0.25 times the nominal wall thickness. | Boss.BaseRadius >= 0.25 * NominalWallThickness |
It is recommended that minimum draft on outer surface of the boss should be greater than or equal to 0.5 degree and on inner surface it should be greater than 0.25 degrees | boss.draft_angle(outer_surface) >= 0.5 degree && boss.draft_angle(inner_surface) > 0.25 degree |
The recommended draft is 1⁄2° or more. | recommended draft ≥ 1⁄2° |
The minimum normal thickness of sheet metal for stick welds is 1.5 mm (0.060 in), although material as thin as 1.0 mm (0.040 in) is sometimes welded. | stick_welds.sheet_metal_thickness = 1.5 mm (0.060 in) |
Minimum wall thickness, 1.3 to 1.5 mm (0.050 to 0.060 in) | wall.thickness >= [1.3 ,1.5 ] mm (0.050 to 0.060 in) |
The wall thicknesses should be less than 60 % of nominal wall to minimize sinking | wall.thickness < 0.6 * nominal_wall.thickness |
Provide a radius at the base of molded parts that is 25% to 40% of the wall thickness. | 0.25 * WallThickness <= RadiusAtBase <= 0.4 * WallThickness |
The deflection of a beam subjected to a load should not exceed a certain limit. | Beam.Deflection <= Limit |
The normal variation of coating thickness under controlled production conditions ranges from about 0.05 mm (0.002 in) to about 0.13 mm (0.005 in) in total variation. | 0.05 mm (0.002 in) ≤ coating.thickness ≤ 0.13 mm (0.005 in) |
The minimum distance between two bolts should be at least twice the diameter of the larger bolt. | Distance(Bolt1, Bolt2) >= 2 * Diameter(LargerBolt) |
The diameter of the bolt should be at least 0.5 inches. | Bolt.Diameter >= 0.5 inches |
The minimum normal thickness of sheet metal for stick welds is 1.5 mm (0.060 in), although material as thin as 1.0 mm (0.040 in) is sometimes welded. | stick_welds.sheet_metal_thickness = 1.5 mm (0.060 in) |
Most paints are applied in thicknesses ranging from 0.025 to 0.100 mm (0.001 to 0.004 in). | 0.025 mm ≤ paint.thickness ≤ 0.100 mm OR 0.001 in ≤ tpaint.thickness≤ 0.004 in |
the angles of 0.5 ° to 2 ° per side, recommended for both inside and outside walls. | Wall.Angle >= 0.5 degrees && Wall.Angle <= 2 degrees |
The minimum thickness of the sheet metal should be 0.032 inches. | SheetMetal.Thickness >= 0.032 inches |
The maximum allowable bending stress for the beam is 30 ksi. | Bending.Stress <= 30 ksi |
The clearance between the piston ring and the cylinder wall should be no greater than 0.003 inches. | Clearance(Piston Ring, Cylinder Wall) <= 0.003 inches |
The minimum radius of the corner should be at least 0.125 inches. | Corner.Radius >= 0.125 inches |
the minimum distance between an extruded hole and cutout should be at least 4 times sheet thickness. | distance(extruded hole, cutout) >= 4 * sheet.thickness |
Tungsten Filament wire may be only 10 to 15 um in diameter. | 10 um <= Tungsten_Filament_Wire.Diameter <= 15 um |
The minimum distance between the inside edge of the bend and the outside of the hem should be 5 times material thickness plus bend radius plus hem radius. | distance(bend.inside_edge,hem_outside) ≥ 5 * material_thickness+ bend.radius+ hem.radius |
The minimum thickness of the plate should be 0.375 inches. | Plate.Thickness >= 0.375 inches |
The diameter of the cutter should always be equal to the width of the key. | cutter.diameter = key.width |
The cooling rate for a particular metal should be no greater than 20°C per second. | Cooling.Rate <= 20°C/s |
In Pressure die casting machining allowance normally in the range 0.25–0.8 mm | 0.25 mm <= Machining.Allowance <= 0.8 mm |
The default aspect ratio of the total length of the part to its minimum diameter should be less than or equal to 8.0. | Total.Length / Min.Diameter <= 8.0 |
It is typically recommended that the draft angle for sidewall should be at least between 0.5 to 2 degrees for inside and outside walls | Sidewall.draft_angle >= 0.5 degrees && Sidewall.draft_angle <= 2 degrees (for inside and outside walls) |
Generally, a draft angle of 0.5 degrees is recommended for core and 3 degrees for a cavity. | Core.Draft Angle >= 0.5 degrees and Cavity.Draft Angle >= 3 degrees |
The minimum radius of the bend should be at least 3 times the material thickness. | Bend.Radius >= 3 * Material.Thickness |
The thickness of the coating should be between 0.001 and 0.003 inches. | 0.001 inches <= Coating.Thickness <= 0.003 inches |
The diameter of the hole should be within ± 0.002 inches of the specified dimension. | -0.002 inches <= Hole.Diameter <= 0.002 inches |
The thickness of the weld bead should be no greater than 0.125 inches. | WeldBead.Thickness <= 0.125 inches |
The wall thicknesses should be less than 60 % of nominal wall to minimize sinking | wall.thickness < 0.6 * nominal_wall.thickness |
The maximum allowable bending moment for the beam is 1000 lb-ft. | Bending.Moment <= 1000 lb-ft |
The minimum radius of the fillet on the casting should be at least 0.125 inches. | Fillet.Radius >= 0.125 inches |
The ratio of the radius of an open hem to sheet thickness should be greater than or equal to the value specified, which is configurable. The default ratio is 0.5. | open_hem.radius/sheet.thickness >= configurable_specified_value && default_ratio == 0.5 |