Ch. 1 Manufacturing Introduction : Manufacturing
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Turning Cycles 
CYCLE 95 Stock removal cycle CYCLE95 (NPP,MID,FALZ,FAX,FAL,FF1,FF2,FF3,VARI,DT,DAM) NPP name of the subprogram Name Part Program MID maximum infeed depth Maximum Infeed Depth (without sign) FALZ finishing allowance in Z Finishing ALlowance Z (without sign) FALX finishing allowance in X Finishing ALlowance X (without sign) FAL finishing allowance parallel to contour Finishing Allowance (without sign) FF1 feed for roughing cuts without undercut FF2 feed for roughing - dive-in in undercuts FF3 feed for finishing VARI machining variant 1..12 Variant DT dwell time for chip break while roughing DAM traverse path after that every roughing cut will be interrupted for chip breaking Function: The stock removal cycle works off a contour that is stored in a subprogram. The contour can be machined outside or inside, longitudinal or face side. The contour can be roughed, finished or complete machined. Tool position before cycle: The last position before cycle call must be approached with G40 (cutter radius compensation off). Outside machining: Before cycle call the tool must be outside the greatest diameter of the contour subprogram. Inside machining: Before cycle call the tool must be inside the smallest diameter of the contour subprogram. Machining sequence: 
Roughing without undercut elements The roughing cuts are done with G1 and feed rate FF1. The roughing cuts occur parallel to the axis until finishing allowance (1), afterwards parallel to the contour (2). After every roughing cut is a lift off in X and Z for tool radius + 1 mm (3) and retraction with G0 (4). This sequence is repeated until the end depth (with finishing allowance) is reached (5). The infeed depths are divided evenly, for that they are smaller equal the programmed parameter MID. Roughing the undercut elements The infeed at the undercut occurs parallel to the contour (6) with G1 and feed rate FF2. The roughing cuts parallel to the axis within the undercut area (7) occur with G1 and feed rate FF1. Sequence of roughing: Roughing without undercut (8) Roughing 1st undercut (9) Roughing 2nd undercut (10) etc. Finishing The contour start point will be approached in both axes simultaneously. Finishing occurs along the contour with G1, G2, G3 and with feed rate FF3. Retraction occurs with G0. NPP
This parameter is the name of the contour subprogram. The name must be in quotation marks, e.g. "CONT1". MID
Maximum infeed depth for roughing. The total depth for roughing will be divided evenly in several single infeeds. These infeed depths are divided evenly, for that they are smaller / equal the programmed parameter MID. Example:
Total depth = 19 mm, MID = 4 mm -> 5 infeeds with each 3,8 mm will be machined. FALZ, FALX, FAL Finishing allowance for roughing FALZ
Finishing allowance in Z FALX
Finishing allowance in X FAL
Finishing allowance parallel to the contour It is not useful to program all 3 parameter (the values will be added). Program either the values for FALZ and FALX and 0 for FAL or vice versa. When no finishing allowance is programmed, roughing is proceeded until final contour. FF1, FF2, FF3 Feed rates for the different maching steps:
FF1 Roughing FF2 Roughing - dive-in in undercuts FF3 Finishing. VARI
VARI defines the kind of machining (roughing, finishing, complete), the direction of machining (longitudinal or face) and the side of machining (inside or outside). DT, DAM These parameter interrupt the axis-parallel movement while roughing to break the chip. DT dwell time DAM traverse path after that the movement should be stopped Programming DAM=0 means no interruption, the dwell time will not be executed. 
Directory: newuploads newuploads -> Allophones of the English phonemes 1 Allophones of /p newuploads -> Phonology What is Phonology? First we should know that the study of speech sounds is: 1- phonetics. 2- phonology. Phonetics is concerns with the following Download 16.54 Mb. Share with your friends:
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