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Head safety on a thread-cutting cartridge – Ukrmetiz, OOO | all.biz
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Head safety on a thread-cutting cartridge

Head safety on a thread-cutting cartridge

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Technical characteristics
  • Country of manufactureBelarus
  • ConditionNew
Description

The head is safety. Device and principle of work.


1 – case; 2 – plug; 3 – balls; 4 – spring; 5 – lead; 6 – balls/; 7 – springs are dish - shaped; 8 – ring; 9 – a sleeve 10 – a nut; 11 – the ring is castle; 12 – cap; 13 – washer

- The tap is established in a square opening of the case 1 and the plug 2. - The clip of a tap is made by balls 3 when moving the plug 2 by a spring 4. - The torque to the case 1 from the thread - cutting boss is transmitted by a lead 5 through the balls 6 which are drawn in by a ring 8 and dish - shaped springs 7 in case holes. Adjustment of a torque is provided with change of size of deformation of dish - shaped springs 7 at rotation of a nut 10.

The head safety is delivered with the adjusted torque providing cutting of the carving specified on a head in steel 45, 153 … 203 HB in accordance with GOST 1050 - 88.

Torque size for others staly is defined experimentally and is regulated by rotation of a nut 10, according to the passport of a product.



Order of control and work:
When cutting a carving in stalyakh with the mechanical properties different from steel 45, it is necessary to execute the following:
- by a calculation or ex - remental method () to determine the moment of cutting of Nanometer in this steel by a dynamometer key by a necessary tap.
- to remove a castle ring and to make control of a torque rotation of a nut clockwise for increase in a torque. Control of a head on a torque is made by a dynamometer key and the special mandrel recorded instead of a tap. After control of a head to record a nut a ring castle.
- after control the head is ready for operation and correctly adjusted head has to provide smooth cutting with a carving tap, at a tap emphasis in a bottom of a deaf opening emergence of a crash in a head signals about the termination of rotation of a tap.
- when cutting a carving with a small step the size of a torque is determined by a formula:

where, Mt - a torque according to the table, Rkh - a step of the cut carving, R - a big stride of a carving for this diameter.


Heads are safety





Are applied together with cartridges thread - cutting.
Are intended for fastening of the right taps

Advantages:
• ensuring high - quality cutting of the right carvings.
• existence of the built - in safety coupling prevents from breakages of a tap in case of too big increase in a torque: for example the tap reaches a bottom of a deaf opening.
• existence of the mechanism of adjustment of a torque,
fast change and fastening of a tap. THAT RB 00223728.011 - 98

Designation Shaft D d l d1x The D cut
carvings
Twisting
moment
Nanometer * on
steel 45
153 … 203 HB
Metric,
Mm
Inch,
inches
Pipe
cylinder. ,
inches
GOST 6357 - 81
6251 - 4002M GOST 3266 - 81 38 19 41 3,15х2,5 M3 - 2,0
6251 - 4002M - 01 4,0х3,15 M4 - 3,0
6251 - 4002M - 02 5,0х4,0 M5 - 4,0
6251 - 4002M - 03 6,3х5,0 M6/M8 1/4 10,0
6251 - 4002M - 04 8,0х6,3 M8/M10 5/16 1/8 20,0
6251 - 4002M - 05 10,0х8,0 M10 3/8 1/4 30,0
6251 - 4002M - 06 9,0х7,1 M12 1/2 - 40,0
6251 - 4002M - 07 58 32 61 11,2х9,0 M14 9/16 - 45,5
6251 - 4002M - 08 12,5х10,0 M16 5/8 - 55
6251 - 4002M - 09 14,0х11,2 M18/M20 3/4 3/8 64; 70
6251 - 4002M - 10 16,0х12,5 M22 7/8 1/2 78
6251 - 4002M - 11 18,0х14,0 M24 1 5/8 124
6251 - 4002M - 12 84 50 83 20,0х16,0 M27/M30 1 1/8 - 152; 200
6251 - 4002M - 13 22,4х18,0 M33 1 1/4 3/4 260
6251 - 4002M - 14 25,0х20,0 M36 1 3/8 7/8 280
6251 - 4002M - 15 28,0х22,4 M39/M42 1 1/2 1; 1 1/8 320; 350




Heads safety extended


Designation D carvings D d l d1x □ Designation D carvings D d l d1x □
6251 - 4002M - 20 M3 38 19 91 3,15х2,5 6251 - 4002M - 40 M3 38 19 141 3,15х2,5
6251 - 4002M - 21 M4 4,0х3,15 6251 - 4002M - 41 M4 4,0х3,15
6251 - 4002M - 22 M5 5,0х4,0 6251 - 4002M - 42 M5 5,0х4,0
6251 - 4002M - 23 M6 6,3х5,0 6251 - 4002M - 43 M6 6,3х5,0
6251 - 4002M - 24 M8 8,0х6,3 6251 - 4002M - 44 M8 8,0х6,3
6251 - 4002M - 25 M10 10,0х8,0 6251 - 4002M - 45 M10 10,0х8,0
6251 - 4002M - 26 M12 9,0х7,1 6251 - 4002M - 46 M12 9,0х7,1
6251 - 4002M - 27 M14 58 32 111 11,2х9,0 6251 - 4002M - 47 M14 58 32 161 11,2х9,0
6251 - 4002M - 28 M16 12,5х10,0 6251 - 4002M - 48 M16 12,5х10,0
6251 - 4002M - 29 M18/M20 14,0х11,2 6251 - 4002M - 49 M18/M20 14,0х11,2
6251 - 4002M - 30 M22 16,0х12,5 6251 - 4002M - 50 M22 16,0х12,5
6251 - 4002M - 31 M24 18,0х14,0 6251 - 4002M - 51 M24 18,0х14,0
6251 - 4002M - 32 M27/M30 84 50 133 20,0х16,0 6251 - 4002M - 52 M27/M30 84 50 183 20,0х16,0
6251 - 4002M - 33 M33 22,4х18,0 6251 - 4002M - 53 M33 22,4х18,0
6251 - 4002M - 34 M36 25,0х20,0 6251 - 4002M - 54 M36 25,0х20,0
6251 - 4002M - 35 M39/M42 28,0х22,4 6251 - 4002M - 55 M39/M42 28,0х22,4
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Head safety on a thread-cutting cartridge
Head safety on a thread-cutting cartridge
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