PL405523A1 - Method for rolling of twist drills - Google Patents

Method for rolling of twist drills

Info

Publication number
PL405523A1
PL405523A1 PL40552313A PL40552313A PL405523A1 PL 405523 A1 PL405523 A1 PL 405523A1 PL 40552313 A PL40552313 A PL 40552313A PL 40552313 A PL40552313 A PL 40552313A PL 405523 A1 PL405523 A1 PL 405523A1
Authority
PL
Poland
Prior art keywords
blank
work
shaped
diameter
work rolls
Prior art date
Application number
PL40552313A
Other languages
Polish (pl)
Other versions
PL224802B1 (en
Inventor
Tomasz Bulzak
Janusz Tomczak
Zbigniew Pater
Original Assignee
Politechnika Lubelska
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Politechnika Lubelska filed Critical Politechnika Lubelska
Priority to PL405523A priority Critical patent/PL224802B1/en
Publication of PL405523A1 publication Critical patent/PL405523A1/en
Publication of PL224802B1 publication Critical patent/PL224802B1/en

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  • Drilling Tools (AREA)

Abstract

Sposób kształtowania wierteł krętych, zwłaszcza o dwóch rowkach wiórowych charakteryzuje się tym, że półfabrykat w kształcie pręta o średnicy większej od średnicy kształtowanego wiertła (4) umieszcza się w przestrzeni walców (1a, 1b, 2a, 2b) roboczych, które rozmieszczone są symetrycznie wokół półfabrykatu, przy czym osie walców (1a, 1b, 2a, 2b) roboczych są równoległe w stosunku do osi półfabrykatu, następnie wprawia się walce (1a, 1b, 2a, 2b) robocze w ruch obrotowy w tym samym kierunku i ze stałą prędkością (n1), po czym odziaływuje się śrubowymi kołnierzami (5a, 5b, 6a, 6b) kształtującymi, znajdującymi się na powierzchniach walców (1a, 1b, 2a, 2b) roboczych i wprawia się półfabrykat w ruch obrotowy ze stałą prędkością (n2) w kierunku przeciwnym do kierunku obrotów walców, (1a, 1b, 2a, 2b) roboczych, po czym zgniata się półfabrykat śrubowymi kołnierzami (5a, 5b, 6a, 6b) kształtującymi i walcuje się rowki wiórowe oraz pióra wiertła na powierzchni półfabrykatu (3). Półfabrykat w kształcie pręta o średnicy większej od średnicy kształtowanego wiertła (4) umieszcza się w przestrzeni walców (1a, 1b, 2a, 2b) roboczych, które rozmieszczone są symetrycznie wokół półfabrykatu, przy czym osie walców (1a, 1b, 2a, 2b) roboczych są pochylone w stosunku do osi półfabrykatu pod stałymi kątami w zakresie od 0° do 10°.The method of forming twist drills, especially with two chip flutes, is characterized by the fact that a rod-shaped blank with a diameter larger than the diameter of the shaped drill (4) is placed in the work cylinders (1a, 1b, 2a, 2b), which are arranged symmetrically around of the blank, where the axes of the work rolls (1a, 1b, 2a, 2b) are parallel to the axis of the blank, then the work rolls (1a, 1b, 2a, 2b) are set in rotation in the same direction and at a constant speed ( n1), after which it reacts with screw flanges (5a, 5b, 6a, 6b) shaping, located on the surfaces of the work rolls (1a, 1b, 2a, 2b) and sets the blank in rotational motion at a constant speed (n2) in the direction opposite to the direction of rotation of the work rollers (1a, 1b, 2a, 2b), after which the blank is kneaded with screw flanges (5a, 5b, 6a, 6b) shaping and the chip grooves are rolled and drill bits on the surface of the blank (3). The rod-shaped blank with a diameter larger than the diameter of the shaped drill (4) is placed in the work cylinders (1a, 1b, 2a, 2b) working, which are arranged symmetrically around the blank, with the roller axes (1a, 1b, 2a, 2b) are inclined relative to the axis of the blank at constant angles in the range of 0 ° to 10 °.

PL405523A 2013-10-03 2013-10-03 Method for rolling of twist drills PL224802B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL405523A PL224802B1 (en) 2013-10-03 2013-10-03 Method for rolling of twist drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL405523A PL224802B1 (en) 2013-10-03 2013-10-03 Method for rolling of twist drills

Publications (2)

Publication Number Publication Date
PL405523A1 true PL405523A1 (en) 2015-04-13
PL224802B1 PL224802B1 (en) 2017-02-28

Family

ID=52781921

Family Applications (1)

Application Number Title Priority Date Filing Date
PL405523A PL224802B1 (en) 2013-10-03 2013-10-03 Method for rolling of twist drills

Country Status (1)

Country Link
PL (1) PL224802B1 (en)

Also Published As

Publication number Publication date
PL224802B1 (en) 2017-02-28

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