Định nghĩa dung sai trong cơ khíCác bạn có thể xem chi tiết trong file đính kèmBản này là handmade ParallelisimFlatnessCircularityCylindricityAngularityConcenctricity Cumulative RadialRunout Axial Runout True Position Straightness(Plane) Straightness(Cylinder) Symmetry GDT Line Profile GDT Profile
Trang 1(Plane)
- Step 1: Fix part and gate on the MAP table
-Step 2: Moving gate for contacting with surface, set ZERO
- Step 3: Moving gate along surface
- Step 4: Take result as max value of deviation
feature
- Step 1: Fix part and gate on the MAP table
(Thee central bar is better)
-Step 2: Moving gate for contacting with surface
- Step 3: Adjust to catch three point at same height, set ZERO
- Step 4: Moving gate along surface
- Step 5: Take result as max value of
Determines the roundness or circularity of a given circular feature (Circle or Circle on Cone)
- Step 1: Fix part and gate on the central bench
-Step 2: Moving gate for contacting with surface, set ZERO (Pependicular is required)
- Step 3: Rotate part to contact entire circul
- Step 4: Take result as max value of deviation
a cylindrical feature
- Step 1: Fix part and gate on the central bench
-Step 2: Moving gate for contacting with surface, set ZERO (Pependicular is required)
- Step 3: Moving gate and rotate part to contact entire surface
- Step 4: Take result as max value of
Determines the deviation of a feature from a reference feature and a defined angle
- Need verify
- Determines the concentricity of a given feature (e.g of a circle) relative
to one or two reference features
-Determines the coaxiality of the axis
of a feature (e.g.of a cylinder) relative
to another feature
- Need verify
Runout
Determines the total error of a cylinder's circle paths perpendicular to the reference axis in radial direction
- Step 1: Fix gate contacting with surface
(Pependicular is required)
- Step 2: Set value to ZERO
- Step 3: Moving gate and rotate part to contact entire surface (Parallel is required)
- Step 4: Take result as max value of deviation
Determines the deviation of a feature in the direction of the reference axis
- Step 1: Fix gate contacting with surface
(Pependicular is required)
- Step 2: Set value to ZERO
- Step 3: Moving gate and rotate part to contact entire surface (Parallel is required)
- Step 4: Take result as max value of deviation
Determines the deviation of the position of a given feature from the nominal position in a datum reference
frame
- Need verify
Determines the parallelism of a planar, cylindrical, conical or a straight-line feature relative to one or two
reference features
Check by Hand
METHOD FOR CHECK GEOMETRIC TOLERANCE
Method check by CMM Contend
(STD: DIN ISO 1101)
015_e_DinPos1_CZLogo.swf
Trang 211 Straightness
(Plane)
Defines for a 2D line the straightness of the line within given sections
- Step 1: Fix part and gate on the MAP table (Thee central bar is better)
-Step 2: Moving gate for contacting with surface
- Step 3: Adjust to catch two points at same height, set ZERO
- Step 4: Moving gate along surface
- Step 5: Take result as max value of
Verify the Tolerance 0.005
(Cylinder)
Defines for a 2D line the straightness of the line within given sections
- Step 1: Fix part and gate on the central bench
-Step 2: Moving gate for contacting with surface, set ZERO
- Step 3: Moving gate along surface
- Step 4: Take result as max value of deviation
Determines the symmetry of a feature relative to two reference features
- Need verify
Defines the form deviation of a curve from its nominal geometry analogous to the GDT Profile
- Need verify
Determines the perpendicularity
of a planar, cylindrical, conical or
a straight-line feature relative to one or two reference features