27
Ðîçä³ë 3
ÑÂÅÐÄ˲ÍÍß, ÐÎÇÑÂÅÐÄËÞÂÀÍÍß,
ÇÅÍÊÅÐÓÂÀÍÍß, ÐÎÇÃÎÐÒÀÍÍß
Ãëèáèíà ð³çàííÿ t. Ïðè ñâåðäë³íí³ ãëèáèíà ð³çàííÿ ñòàíîâèòü
t
D
=
2
,
äå Dä³àìåòð ñâåðäëà, ìì. Ïðè ðîçñâåðäëþâàíí³, çåíêåðóâàíí³ òà ðîç-
ãîðòàíí³ âîíà ñòàíîâèòü
t
Dd
=
-
2
,
äå Dä³àìåòð ñâåðäëà, çåíêåðà àáî ðîçãîðòêè, ìì; dä³àìåòð îáðîá-
ëþâàíîãî îòâîðó, ìì.
Ïîäà÷à S. Ïðè ñâåðäë³íí³ îòâîð³â áåç îáìåæóþ÷èõ ôàêòîð³â
ïðèçíà÷àþòü ìàêñèìàëüíî äîñòóïíó ïîäà÷ó çà ì³öí³ñòþ ñâåðäëà
(òàáë. 25). Ïðè ðîçñâåðäëþâàíí³ îòâîð³â ðåêîìåíäîâàíà äëÿ ñâåðäë³í-
íÿ ïîäà÷à ìîæå áóòè çá³ëüøåíà ó 2 ðàçè.
Òàáëèöÿ 25
Ïîäà÷³ (ìì/îá) ïðè ñâåðäë³íí³ ñòàë³, ÷àâóíó, ì³äíèõ
é àëþì³í³ºâèõ ñïëàâ³â ñâåðäëàìè ç³ øâèäêîð³çàëüíî¿ ñòàë³
ðòåìà³Ä
àëäðåâñ
D ìì,
üëàòÑ
éèíàâîêàòéèð³Ñ
é³íä³ì,íóâà÷
èâàëïñ³âº³í³ìþëà
ÂÍ 061< BH 042061 BH 003042 BH 003> BH £ 071 BH 071>
à÷àäîÏ S áî/ìì,
4231,090,001,080,070,060,060,040,081,021,021,090,0
6491,031,051,001,011,070,090,060,072,081,081,021,0
8662,091,002,051,041,011,021,090,063,072,042,081,0
01823,062,052,002,071,041,051,021,054,063,013,042,0
210163,023,082,052,002,071,071,051,055,054,053,013,0
612134,063,033,082,032,002,002,071,066,055,014,053,0
026194,034,083,033,072,032,032,002,067,066,074,014,0
520285,094,034,083,023,072,062,032,098,067,045,074,0
035226,085,084,034,053,023,092,062,069,098,006,045,0
040387,026,085,084,024,053,053,092,091,169,017,006,0
050498,087,066,085,084,024,004,053,063,191,118,017,0
Ïðèì³òêà.
Íàâåäåí³ ïîäà÷³ çàñòîñîâóþòü ïðè ñâåðäë³íí³ îòâîð³â ãëèáèíîþ l£3D
ç òî÷í³ñòþ íå âèùå 12-ãî êâàë³òåòó â óìîâàõ æîðñòêî¿ òåõíîëîã³÷íî¿ ñèñòå-