SU1701440A1 - Vibration-resistant milling cutter - Google Patents

Vibration-resistant milling cutter Download PDF

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Publication number
SU1701440A1
SU1701440A1 SU894786953A SU4786953A SU1701440A1 SU 1701440 A1 SU1701440 A1 SU 1701440A1 SU 894786953 A SU894786953 A SU 894786953A SU 4786953 A SU4786953 A SU 4786953A SU 1701440 A1 SU1701440 A1 SU 1701440A1
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SU
USSR - Soviet Union
Prior art keywords
teeth
cutter
pitch
milling cutter
vibration
Prior art date
Application number
SU894786953A
Other languages
Russian (ru)
Inventor
Виктор Георгиевич Шаламов
Игорь Германович Корепанов
Сергей Михайлович Лопаткин
Владимир Владимирович Васютин
Original Assignee
Челябинский Политехнический Институт Им.Ленинского Комсомола
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Priority to SU894786953A priority Critical patent/SU1701440A1/en
Application granted granted Critical
Publication of SU1701440A1 publication Critical patent/SU1701440A1/en

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Abstract

Изобретение относитс  к обработке материалов резанием, в частности фрезерова- нием. Целью изобретени   вл етс  повышение виброустойчивости посредством оптимизации величины и характера неравномерности шага зубьев фрезы. На режущей части фрезы зубь  располагаютс  группами с окружными шагами Јi и Ј2 , разность которых определ етс  из соотношени  Ј1 - Ј2 1:m:z2, где г - число зубьев фрезы; m 1,2,3... - номер подавл емый гармоники. При четном числе зубьев количество последних в группе равно z/2, а при нечетном - z - 1/2. Дл  подавлени  гармоники , несущей наибольшее количество энергии, выбирают m 1. При подавлении резонансных  влений в технологических системах тп 2,3.... 2 з.п. ф-лы, 2 ил,The invention relates to the processing of materials by cutting, in particular by milling. The aim of the invention is to increase the vibration resistance by optimizing the size and nature of the unevenness of the pitch of the cutter teeth. On the cutting part of the cutter, the teeth are arranged in groups with circumferential steps Јi and Ј2, the difference of which is determined from the relation 1 - Ј2 1: m: z2, where r is the number of teeth of the mill; m 1,2,3 ... is the number of the harmonics suppressed. For an even number of teeth, the number of the latter in the group is z / 2, and for an odd number, z is 1/2. To suppress the harmonic carrying the greatest amount of energy, m 1 is selected. When resonance phenomena are suppressed in technological systems tp 2.3 ... 2 Cp f-ly, 2 silt,

Description

Изобретение относитс  к обработке материалов резанием, в частности фрезерованием .The invention relates to the processing of materials by cutting, in particular by milling.

Целью изобретени   вл етс  повышение виброустойчивости посредством оптимизации величины и характера неравномерности шага зубьев фрезы.The aim of the invention is to increase the vibration resistance by optimizing the size and nature of the unevenness of the pitch of the cutter teeth.

На фиг.1 показана фреза с четным количеством зубьев; на фиг.2 - с нечетным.Figure 1 shows a mill with an even number of teeth; figure 2 - with odd.

Фреза содержит крепежную и рабочую часть. При этом на рабочей части при четном числе зубьев первые z/2 зубьев имеют окружный шаг Ј1 , а оставшиес  - Ј2 При нечетном числе зубьев средний зуб выполн етс  как у фрезы с равномерным расположением зубьев. Величина разношагости зубьев Ле выбираетс  из соотношени The milling cutter contains mounting and working part. At the same time, on the working part, with an even number of teeth, the first z / 2 teeth have a circumferential pitch Ј1, and the remaining ones - Ј2. With an odd number of teeth, the middle tooth is performed as in a mill with a uniform arrangement of teeth. The magnitude of the misalignment of the teeth of Le is chosen from the ratio

1one

))

- Ј2  - Ј2

m zm z

где m - номер демпфируемой гармоникиwhere m is the damped harmonic number

возмущени ;outrage;

z - число зубьев фрезы.z is the number of teeth of the cutter.

При произвольном шаге зубьев фрезы наибольшее количество энергии несут гармоники кратные числу зубьев инструмента. В общем случае с увеличением номера подавл емой гармоники количество энергии в ней уменьшаетс . Поэтому при выборе величины разности шагов дл  подавлени  гармоники , котора  несет наибольшее количество энергии m 1. Однако, амплитуда колебаний в технологической системе определ етс  и возможными резонансными  влени ми. Поэтому при необходимости подавлени  гармоник высших пор дков при выборе величины разности шагов величина т 2,3....With an arbitrary pitch of the cutter teeth, the harmonics are multiples of the largest number of energy carried by the instrument's teeth. In general, as the number of the suppressed harmonic increases, the amount of energy in it decreases. Therefore, when choosing the magnitude of the difference of steps to suppress the harmonic that carries the greatest amount of energy m 1. However, the amplitude of oscillations in the technological system is also determined by the possible resonance phenomena. Therefore, if it is necessary to suppress harmonics of higher order when choosing the magnitude of the difference of steps, the value of t is 2.3 ...

Claims (3)

Формула изобретени  1. Виброустойчива  фреза, содержаща  крепежную часть и рабочую часть, режущие зубь  которой расположены с неравномерным окружным шагом, отличающа с  тем, что, с целью повышени  виброустойчивости за счет оптимизации величины и хаClaim 1. Vibration-resistant milling cutter comprising a mounting part and a working part, the cutting teeth of which are arranged with an uneven circumferential pitch, characterized in that, in order to increase the vibration resistance by optimizing the magnitude and fefe VI ОVi o Ј 4 ОЈ 4 o рактера неравномерности шага зубьев фрезы , последние расположены двум  группами с окружными шагами соответственно EI и Е2, разность между которыми определ етс  из соотношени irregularities of the pitch of the cutter teeth, the latter are located in two groups with circumferential steps, EI and E2, respectively, the difference between which is determined from the ratio ДЕ Е1-Е2 -- тггDE E1-E2 - tgg где z - число зубьев фрезы,where z is the number of teeth of the cutter, т - 1,2,3.4... - номер подавл емой гармоники .t - 1,2,3.4 ... is the number of the harmonic suppressed. 00 2.Фреза по п.1, отличающа с  тем, что при четном числе зубьев количество последних в группе равно z/2.2. A milling cutter according to claim 1, characterized in that, with an even number of teeth, the number of the latter in the group is z / 2. 3.Фреза по п.1, отличающа с  тем, что при нечетном числе зубьев количество последних в группе равно z - 1 /2, а шаг между группами равен шагу при равномерном расположении зубьев по окружности фрезы.3. A milling cutter according to claim 1, characterized in that, with an odd number of teeth, the number of the latter in the group is z - 1/2, and the pitch between the groups is equal to the pitch with a uniform arrangement of the teeth around the cutter circumference. геge ЬB Z5Z5
SU894786953A 1989-12-06 1989-12-06 Vibration-resistant milling cutter SU1701440A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU894786953A SU1701440A1 (en) 1989-12-06 1989-12-06 Vibration-resistant milling cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU894786953A SU1701440A1 (en) 1989-12-06 1989-12-06 Vibration-resistant milling cutter

Publications (1)

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SU1701440A1 true SU1701440A1 (en) 1991-12-30

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Application Number Title Priority Date Filing Date
SU894786953A SU1701440A1 (en) 1989-12-06 1989-12-06 Vibration-resistant milling cutter

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SU (1) SU1701440A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8221036B2 (en) 2006-08-07 2012-07-17 Hanita Metal Works, Ltd. Chatter-resistant end mill
EP2012958B1 (en) 2006-04-04 2016-09-28 Hanita Metal Works Ltd. Face milling cutter
US11865629B2 (en) 2021-11-04 2024-01-09 Kennametal Inc. Rotary cutting tool with high ramp angle capability

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Фреза концева . ГОСТ 17026-71. *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2012958B1 (en) 2006-04-04 2016-09-28 Hanita Metal Works Ltd. Face milling cutter
EP2012958B2 (en) † 2006-04-04 2019-12-18 Hanita Metal Works Ltd. Face milling cutter
US8221036B2 (en) 2006-08-07 2012-07-17 Hanita Metal Works, Ltd. Chatter-resistant end mill
RU2462336C2 (en) * 2006-08-07 2012-09-27 Ханита Метал Уоркс Лтд. Method of making shake proof butt mill (versions)
US11865629B2 (en) 2021-11-04 2024-01-09 Kennametal Inc. Rotary cutting tool with high ramp angle capability

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