MLP-2 · PDF fileeffective face width: b=7 . pressure angle: αn=20 ... compliance with...

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1 MITAKA KOHKI CO., LTD. Laser Probe Contour Measuring Instrument MLP-2

Transcript of MLP-2 · PDF fileeffective face width: b=7 . pressure angle: αn=20 ... compliance with...

1 MITAKA KOHKI CO., LTD.

Laser Probe Contour Measuring Instrument

MLP-2

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Laser Probe Contour Measuring Instrument MLP-2

Configuration

* printer is optional

dust-proof cover

pc for control and evaluation

measuring unit

vibration isolator

monitor

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Measuring Unit

axis moving range resolution

X 120mm 0.1μm

Y 90mm 0.1μm

Z 130mm 0.1μm

AF (R) 40mm 0.01μm

θ 360° 0.001°

Stage Part

Principal Specifications 1. laser beam spot diameter: 1μm (at 100 magnification) 2. specimen size: φ0.02mm~φ80mm 3. measuring functions ●contour ●surface roughness ●gear profile ●cutting edge of tools ●roundness

Laser Probe Contour Measuring Instrument MLP-2

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Feature 1: Rotational Center Measuring Function

measuring surface image

measurement sight viewed from the upper camera

Operation Screen (PC Monitor)

Centering adjustment of specimens is NOT necessary since MLP-2 detects the dynamic center of the θ stage by measuring the standard ball.

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Specimen (gear)

vise

cored bar

objective lens

* The specimen just sits on the top of the cored bar. * MLP-2 provides easy setup of a specimen and stress-free environment to it.

Feature 2: Easy Setting

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MLP-2 provides real-time view for measurement-points.

cross-sectional profile display

coordinate value display (μm)

the upper camera

monitor for measurement-point

Feature 3: Real Time Observation

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Micro End mill φ270μm

Measuring Equipment MLP-2

0.5mm

Function 1: Contour Measurement * outside diameter: φ266μm * rake angle: 4.18° * flank angle: 13.03° * core thickness: 153μm

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1) Micro Glass Ball Φ20μm * Best fit R:20.74μm * Roundness:0.064μm

Measuring Equipment MLP-2

Function 2: Roundness Measurement

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2) Micro Glass Ball Φ80μm * Best fit Radius:25.28μm * Roundness:0.199μm

Measuring Equipment MLP-2

Function 2: Roundness Measurement

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SRM 2074 Certificate

MLP-2

Difference

Ra 0.972

(±0.025) 0.970 -0.002

D 40.00 (-0.02,+0.06)

40.017 +0.017

Measuring Condition: *NIST Calibration certificate of SRM2074 (NIST) *Stylus tip width=2μm *λc=0.8mm L=4mm.

Unit:μm

Function 3: Roughness Measurement

MLP-2 (Laser Probe): *Objective lens :100x(NA=0.8) *Spot diameter=1μm *λc=0.8mm L=4mm

Specimen: NIST Roughness Standard

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gear

vise

shaft

objective lens

Function 4: Gear Profile Measurement

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Measuring Example

Specimen: Helical Gear Gear Specification module: m=0.27 number of teeth: Z=34 pitch diameter: d=9.709 effective face width: b=7 pressure angle: αn=20° helical angle: β=19°R transfer coefficient: Xn=0 processing method: grinding processing machine: STRAUSAK

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φ7

d=9.

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da=1

0.31

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Result of Gear Profile Measurement MLP-2 measures the entire profile of the specimen!

m=0.27 Z=34 d=9.709 αn=20° β=19°R xn=0

2mm

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MLP-2 detects involute deviation at sub μm level!

right tooth flank: Max FαR=2.9μm

left tooth flank: Max FαL=2.9μm

slider for tooth number selection

Evaluation of Tooth Profile Deviation

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single pitch deviation: Max fpt=1.07μm

pitch variation: Max ftu=1.56μm

total cumulative deviation: Max Fp=3.55μm

radial run-out: Max Fr=3.89μm

right tooth flank

decentering elimination function

Evaluation of Pitch Deviation & Radial Run-Out

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Transmission Error Evaluation Mesh Diagram

calculated master gear

specimen

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Mesh Simulation MLP-2 provides dynamic tooth contact evaluation!

calculated master gear

specimen

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Result of Transmission Error Calculation

right tooth flank: Max Error=3.314μm Min Error=-3.261μm

left tooth flank: Max Error=4.734μm Min Error=-3.434μm

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Roughness Evaluation of Tooth Profile

(compliance with JIS B 0601:2001) *λc: 0.08mm * c: 0 % * l: 0.08mm * ln: 0.56mm * Rp: 1.73857 μm * Rv: 1.44714 μm * Rz: 3.18571 μm * Rc: 1.69894 μm * Rt: 5.72 μm * Ra: 0.547196 μm * Rq: 0.678878 μm * Rsk: 0.0215829 * Rku: 3.09934 * RSm: 10.153 μm * Rmr(c): 0 %

Roughness Calculation

Cross-Section of Tooth Profile

Drawing Specification: Rz≦6.3μm Measurement Result: Rz = 3.2μm

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Comparison with CAD Data

magnified view of the error designed value: measured value:

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Mitaka Kohki Co.,Ltd. 1-18-8 Nozaki, Mitaka-Shi, Tokyo 181-0014 Japan

Phone: +81-422-49-1491 Fax: +81-422-49-1117

E-mail: [email protected]

http://www.mitakakohki.co.jp/