IC697CHS790
IC697CHS790
IC697CHS790
左右切削法：如圖一c所示，刀具采用與牙型槽等寬的尺寸，更多數(shù)控知識(shí)微信搜索公眾號(hào)“數(shù)控編程教學(xué)”免費(fèi)領(lǐng)取教程，加工中刀具縱向雙向及橫向做復(fù)合進(jìn)刀。這種方式加工刀具受力情況與斜進(jìn)法相似，較易加工出梯形螺紋。但該方式要求刀具縱向左右兩側(cè)移動(dòng)結(jié)合橫向進(jìn)刀，對(duì)操作者技術(shù)要求較高，需多次操作后才能熟練掌握。
2、多刀組合法：一般梯形螺紋加工均采用這種方式。組合方式很多，如單刀加工中的三種只做為粗加工，留一定余量后再采用精加工刀具完成加工。再如圖一d所示，這也是多刀組合中的一種，先用小切刀切直槽再用與牙型等寬的螺紋刀具加工。
二、螺紋編程指令
在GSK980T數(shù)控系統(tǒng)中，提供了三個(gè)加工螺紋的編程指令，分別是逐段加工螺紋指令G32、螺紋加工循環(huán)指令G92、復(fù)合循環(huán)指令G76。三個(gè)指令加工螺紋編程上有不同，進(jìn)刀方式上也有不同，所造成的加工誤差也不同。在編程中應(yīng)仔細(xì)分析、合理選用，以加工出合格的工件。
1、逐段加工螺紋指令G32，格式如下：
G32 X(U) Z(W)F
使用本指令編程每次螺紋加工路徑都至少需要4個(gè)程序段，如果螺紋加工使用斜線(xiàn)退出，每次走刀需要5個(gè)程序段。這種方法的缺點(diǎn)是程序過(guò)長(zhǎng)、難以編輯、錯(cuò)誤多并減小控制系統(tǒng)的存儲(chǔ)能力。但這種方法也有一定的優(yōu)點(diǎn)，程序員可以絕對(duì)控制螺紋的編程過(guò)程，這種控制中有了手的介入，從而可以螺紋加工中應(yīng)用一些特殊的技巧，例如用比螺紋本身小得多的螺紋刀加工螺紋或使用圓頭切槽刀加工大螺距螺紋。
2、螺紋加工循環(huán)指令G92，格式如下：
G92 X(U) Z(W)F
使用本指令主要優(yōu)點(diǎn)是避免了重復(fù)數(shù)據(jù)，一條程序段，就能完成螺紋加工的定位、車(chē)削以及退刀，使程序更容易編輯，同時(shí)它還有螺紋收尾功能，不開(kāi)退刀槽，也能實(shí)現(xiàn)車(chē)削螺紋的退刀。G32與G92一樣均為直進(jìn)式切削方法，在切削螺距較大的螺紋時(shí)，由于切削深度較大，刀刃磨損較快，從而是造成螺紋中徑誤差，但是其加工的牙形精度高，一般多用于小螺距螺紋加工。
2006 HYSTER S50FT 5000LB FORKLIFT, SIDE SHIFT, 3 STAGE
SHARP HMV MILLING MACHINE W/ DRO AND 9" X 49" TABLE 3HP
MMC-SD-1.0-230 GIDDINGS & LEWIS CONTROL MODULE
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OMRON GPC03 GRAPHIC PROGRAMMING CONSOLE, W/ ACCESSORIES
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BANNER MINI-SCREEN MSE2424, MSR2424 EMITTER & RECEIVER
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651-575-40 SPANG POWER CONTROL UNIT
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VFK1-415-M3 DRIVECON VARIABLE FREQUENCY DRIVE VFD 2HP
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MODICON 170ADM69051 I/O BASE W/170ENT11002 COMM ADAPTER
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OMAL Actuator combo unit. UNIVER Valve
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ATC 366 SERIES LONG RANGER COMPUTING COUNTER 366A 400 Q
A212SD-OOO-N-G ARO/INGERSOL RAND AIR CONTROL VALVE
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355-021-019 DEUBLIN UNION NEW IN BOX
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6513B-000-PM-111DA MAC VALVE NEW!!
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