AMPC-E_CHS

螺纹加工 | 整体硬质合金和可转位螺纹铣刀

Thread Mill Calculations and Recommended Passes

A

Thread Mill Drill Calculation Based on nominal tap drill diameter. Based on 0.003" or 0.075mm probable mean oversize.

钻削

Major Thread Diameter for # Drills Drill #

To calculate the percent of full thread for a given hole diameter:

Thread Diameter

# 2 # 3 # 4 # 5 # 6 # 8

0.086 0.099 0.112 0.125 0.132 0.164 0.190 0.216

Basic major diameter of thread - Drill hole size 0.0130

% of thread = # of threads per inch •

IMPERIAL:

B

76.96 Pitch (mm)

% of thread =

• [ Basic major diameter of thread - Drill hole size ]

METRIC:

# 10 # 12

镗孔

Recommended Passes

C

NPT / NPTF / BSPT / API

Recommen ISO ded Passes

UN / UNJ / BSPP / BSW / NPS / NPSF

Machinability

Machinability

Machinability

Pitch Size

Pitch Size

Pitch Size 0.40 0.45 0.50 0.70 0.75 0.80 1.00 1.25 1.50 1.75 2.00 2.50 3.00 3.50 4.00 4.50 5.00 6.00

铰孔

Easy

Average

Difficult

Easy

Average

Difficult

Easy

Average

Difficult

64 56 48 44 40 36 32 28 24 20 19 18 16 14 13 12 11 10

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2

1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 3 3 3 3 3

2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 4 4 4 4 4 4

28 27 19 18 14

1 1 1 1 1 1 1 1 2

1 1 1 1 2 2 2 2 3

2 2 2 2 3 3 3 3 4

1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2

1 1 1 1 1 1 1 2 2 2 2 3 3 3 3 3 3 3

2 2 2 2 2 2 2 3 3 3 3 4 4 4 4 4 4 4

D

11.5

11 10

抛光

8

1 Pass 2 Passes 3 Passes 4 Passes

E

螺纹加工

9 8 7 6

X

特殊应用

www.alliedmachine.com | 1.330.343.4283

E: 53