Буц Б.Д., Приходько В.Є., Ткачов Ю.В. Розрахунок режимів різання металів

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2) ïîäà÷³ íàâåäåí³ äëÿ ôàñîííèõ ôðåç ç îïóêëèì, ïëàâíî îêðåñëåíèì ïðîô³ëåì; ïîäà÷³ ìàþòü áóòè çìåíøåí³ íà 40% äëÿ

ôðåç ³ç ð³çêî îêðåñëåíèì àáî âãíóòèì ïðîô³ëåì;

3) äëÿ ïðîð³çíèõ òà â³äð³çíèõ ôðåç ³ç äð³áíèì çóáîì ïîäà÷³ íàâåäåí³ äëÿ ãëèáèíè ôðåçåðóâàííÿ äî 5 ìì, äëÿ ôðåç ³ç

âåëèêèì çóáîìäëÿ ãëèáèíè ïîíàä 5 ìì.

Òàáëèöÿ 36

Ïîäà÷³ ïðè ôðåçåðóâàíí³ òâåðäîñïëàâíèìè ê³íöåâèìè ôðåçàìè ïëîùèí òà óñòóï³â ñòàëüíèõ çàãîòîâîê

Ïðèì³òêè:

1) äëÿ ÷îðíîâîãî ôðåçåðóâàííÿ ÷àâóíó ïîäà÷³, íàâåäåí³ äëÿ ÷îðíîâîãî ôðåçåðóâàííÿ ñòàë³, ìîæóòü áóòè çá³ëüøåí³ íà

3040%, à äëÿ ÷èñòîâîãî ôðåçåðóâàííÿ ÷àâóíó âåëè÷èíà ïîäà÷³, ðåêîìåíäîâàíà äëÿ ÷èñòîâîãî ôðåçåðóâàííÿ ñòàë³, íå çì³íþ-

ºòüñÿ;

äèÂ

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â³òíåìåëå

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èíèòñàëï³âîòíèâÃ

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2) âåðõí³ ãðàíèö³ ïîäà÷ äëÿ ÷îðíîâîãî ôðåçåðóâàííÿ çàñòîñîâóþòü ïðè ìàë³é øèðèí³ ôðåçåðóâàííÿ íà âåðñòàõ âèñîêî¿

æîðñòêîñò³, íèæí³ïðè âåëèê³é øèðèí³ ôðåçåðóâàííÿ íà âåðñòàòàõ íåäîñòàòíüî¿ æîðñòêîñò³;

3) ïîäà÷³, íàâåäåí³ äëÿ ÷èñòîâîãî ôðåçåðóâàííÿ, çàáåçïå÷óþòü ïàðàìåòð øîðñòêîñò³ Ra=0,81,6 ìêì.

Òàáëèöÿ 37

Ïîäà÷³ ïðè ÷èñòîâîìó ôðåçåðóâàíí³ ïëîùèí òà óñòóï³â

òîðöåâèìè, äèñêîâèìè òà öèë³íäðè÷íèìè ôðåçàìè

ðòåìàðàÏ

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aR ìêì,

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4,051,0  

Òàáëèöÿ 38

Ïîäà÷³ ïðè ôðåçåðóâàíí³ ñòàëüíèõ çàãîòîâîê øïîíêîâèìè

ôðåçàìè ç³ øâèäêîð³çàëüíî¿ ñòàë³

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äëÿ îáðîáêè á³ëüø ì³öíèõ ñòàëåé ïîäà÷³ íåîáõ³äíî çìåíøèòè íà 2040%.

Øâèäê³ñòü ð³çàííÿ V (ì/õâ). Ï³ä øâèäê³ñòþ ð³çàííÿ ïðè ôðå-

çåðóâàíí³ ðîçóì³þòü êîëîâó øâèäê³ñòü ôðåçè

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Òàáëèöÿ 39

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çà òàáë. 42.

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