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Product lines
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Facilitation
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Holders of knurling tools DVR
Holders are designed for knurling of external cylindrical surfaces
Usable machine tool - lathe
Rolling between pair of knurling wheels
Self-centring Holder
Models: DVR 20-8, DVR 20A-8, DVR 20-2,
DVR 20-1
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Zhv, Zhvu – Thread-rolling heads
High effective tools intended for manufacturing of the outer threads through the cold rolling-axial method.
Heads are used on universal lathes, turret lathes, drilling machines and on automatic lathes.
Range of thread-rolling M3÷M60 up to the type of head and rollers.
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Reamers without guide bush T
Designed for manual reaming of holes in range 7.6÷60mm up to the type of reamer.
Reamers can be delivered in sets:
ST12 10.25÷33mm or ST6 13.75÷24mm
Roller dies for in-feed and axial rolling
Roller dies for knurling
Flat dies
Planetary dies
- usage on thread-rolling machines |
Models of thread rolling heads
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Manuals for Thread rolling heads - download in PDF
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RK, Zhv - Thread rolling head
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Facilitation
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Frequently asked questions (FAQ)
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By heads can be rolled thread on roller ovenware. This
operation can be done on lathe, it is not necessary
thread rolling machine. |
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NAREX MTE produces and deliveres axial thread rolling heads
fixed Zhv and universal heads Zhvu or heads RK (heads RK NAREX MTE does not produce, only sells).
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By fixed heads Zhv with unchanging slope of rolling disks can
be rolled only sharp threads like metric - M, Whitwhorts - BSW, inch - UN, roller piped - G.
By universal heads Zhvu or RK with changeable slope in range 0 - 5,5°, is possible to roll sharp threads,
trapezial threads and round threads Rd.
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In case of fixed head Zhv - YES, in case of universal head Zhvu or RK - NO.
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For
trapezial threads (Tr) rolling is necessary bigger angel of rolling
disks than has fixed head Zhv.
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Mainly thread rolling disks which are given according to type
and size of the head and type and size of thread which we want to roll. Further we can need holder Dzhv
for clamping head to the lathe.
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With holder Dzhv is clamped to tool head of lathe.
On turret lathe is clamped to turret head, with special holder is possible to clamp it also to lathe
tailstock.
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A - on head put rolling disks in sequence according to
instructions
for use / B - head clamp to the machine / C - align head
according to lathe spindle axial / D - set head in light
of middle diameter of rolling thread / E - wind up the head
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A - clamp head / B - choose suitable spindle revolutions
according to rolling speed / C - arrange stop on linear saddle in place where should head open /
D - set up cooling oil |
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A - semiproducts material must have mechanical
characteristics which allowed cold volumetric forming / B - semiproducts diameter must be same like
value from instruction for use / C - semiproducts face must have slope according to instructions for use
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Constructional and alloyed steel with fort limit to 900 MPa
and ductility higher than 8%. Free cutting steel is unsuitable for cold rolling. Further aluminium alloy,
copper alloy etc. |
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Product repairing |
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NAREX MTE standardly provides repairs of produced and delivered products.
There are guarantee repairs or normal non guarantee repairs. During repair
is product dismounted, there are found defective parts and up to it is determined
range and price of repair. After customer´s repair price confirmation are defected
parts exchanged, product is again mounted and tested.
Repair speeding
For repair speeding and lower price is suitable to enclose to repair order letter with
information about problems (during which conditions defects occurs or indicate required range of repair).
Repair ordering
For repair ordering you should send product for repair, order of repair and specifications of defects on our address:
NAREX MTE Ltd.
sales department
Moskevska 659/63
CZ-101 00 Prague 10
Czech Republic
Information about repair
About repair you will be informed by e-mail or by phone, with any
questions you can contact export department on phone: +420 246 002 249, e-mail:
sales@narexmte.cz, fax:
+ 420 246 002 335 |
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NAREX MTE s.r.o.
Moskevska 659/63
CZ-101 00 Prague 10
Czech Republic |
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Tel:
Fax:
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+420-246 002 321
+420-246 002 249
+420-246 002 335
+420-246 002 343 |
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e-mail:
sales@narexmte.cz
http://www.narexmte.cz |
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Support |
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Technical support is at the disposal of you on phone +420 246 002 249 or you can contact us by e-mail:
sales@narexmte.cz
or by fax: +420 246 002 335.
Basic technical information you can find also on reference
service. |
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NAREX MTE s.r.o.
Moskevska 659/63
CZ-101 00 Prague 10
Czech Republic |
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Tel:
Fax:
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+420-246 002 321
+420-246 002 249
+420-246 002 335
+420-246 002 343 |
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e-mail:
sales@narexmte.cz
http://www.narexmte.cz |
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- Complete catalogue NAREX MTE (PDF)
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česky
english
deutsch
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- Thread rolling heads and rolling disks (PDF)
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česky
english
deutsch
πο-русски
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- Tools for thread rolling (PDF)
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česky
english
deutsch |
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- Display of products lines (quick reference)
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