Dimension of type of tap of whorl of gas cylinder awl and technology ask

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Experiment of requirement of this type that the standard provided tap of whorl of gas cylinder awl and dimension, technology, function, mark mixes 1 limits pack. This standard applies to treatment gas cylinder the tap of whorl of the awl in special whorl. 2 cite the clause that following standard place contains the level, through citing in this standard compose makes the clause of this standard. When this standard is published, what show version to all be effective. All standards can be edited, use this level each just should be discussed use following level the possibility of newest version. GB ／ T 145, 1985 centers aperture (affirmed 1999 effective) GB 8335, 1998 gas cylinder are special T 4267 of whorl GB ／ , tool of circumgyrate of 1984 straight handles uses measure of square head of petiole diameter and drive 3 type and dimension 3. The type of 1 tap and dimension press graph L and watch the regulation of 1. Graph the type of 1 tap and dimension express 1 tap dimension (tooth of Mm) code name is counted (every 25.

Measure of square head of 4mm) pitch P L L L0 L1 D is basic dimension extreme deviation is basic A L2 PZ19 of dimension extreme deviation.

2 14 1.

± of 1814 78 35 30 0.

9 6 16.

0 0-0.

070 12.

5 16 PZ27.

8 85 40 33 25.

0 0-0.

084 20.

0 24 PZ39.

0 12 2.

± of 117 95 42 34 1.

1 7 31.

5 0-0.

100 25.

The tooth of whorl of 0 28 tap press a plan with dimension 2 with the watch the regulation of 2. Graph the tooth of 2 tap whorl note with dimension: It is smooth that whorl coping allows. The tooth that expresses 2 tap whorl dimension (tooth of Mm) code name is counted (every 25.

Tooth of H1=h2 of diameter of tool reference plane of P of 4 Mm) pitch half horn extreme deviation of A/2 Da/2 pitch (in 25.

On 4mm) F horn Dh1 Dh2 PZ19 of extreme deviation of basic measure of D1 of trail of D2 of the diameter in D of old way of R of radius of extreme deviation circular arc.

2 14 1.

814 19.

200 18.

036 16.

872 0.

581 +0.

0250 0-0.

± of 25 of ± of 30 of 025 27 ° 0.

015 +2-4 0.

249PZ27.

8 27.

800 26.

636 25.

472PZ39.

0 12 2.

117 39.

000 37.

643 36.

286 0.

678 0.

Aperture of two upright centers presses 291 tap the A of GB/T 145 make. Tooth horn bisector is perpendicular at cone generatrix. The measurement of pitch should generatrix of body of parallel Yu Zhui. The nominal cutting angle of tap recommends as follows: Horn is not less than 8 ° before; Horn is not less than 4 ° after. Gas cylinder of mark give typical examples is special basic measure is whorl 27.

The tap of 8: PZ27 of tap of whorl of gas cylinder awl.

8GB 10878-1999. Technical requirement material and the high-speed steel that hardness tap whorl uses W6Mo5Cr4V2 or coequal above property partly are made, soldering petiole uses 45 steel or the rolled steel of coequal above function is made. Hardness of part of hardness tap whorl not under 63HRC, tap square head is divided not under 30HRC. The exterior and surface of tap of exterior of exterior surface roughness must not have mark of tooth of crackle, collapse, rust and grinding burn to wait for the blemish that affects performance characteristics. Of surface roughness of surface of tap of exterior surface roughness the biggest allow a value to press a watch the regulation of 3. Those who express surface roughness of 3 tap surface is the biggest allow a value (surface roughness of surface of Rz Ra of parameter of petiole surface surface roughness is numeric at the back of the face before surface of µm) place whorl 3.

2 6.

3 3.

2 1.

The tooth of 6 tap whorl should undertake shovelling grinding. Answer with the join of blade channel before tap pliable. Of tap whorl in diameter is in base be apart from extreme deviation measure inside limits. Public errand of D of dimension of tap square head includes appearance and) of positional public errand for H12(. The round jumpy public errand with departmental tap of positional public errand presses a watch the regulation of 4. Express the round jumpy public errand with 4 departmental tap (cutting part of Mm) code name is jumpy to the inclined Xiang Yuan of common spool thread calibration part (whorl part) jumpy to the radial circle of common spool thread petiole is opposite of common spool thread.

2 0.

03 0.

02PZ27.

8PZ39.

0 0.

04 CNC Milling