Evrim Berk 030060161 4th Week

Shop Floor Management: A shop consists of several pieces of manufacturing equipment that are used to process, transport, and store items. Shop Floor Managements System receives inputs from an external system and generates the device-specific instructions necessary to enact individiual manufacturing tasks. Primary inputs to the SFMS are the production reqiurements, which describe the parts to be manufactured, and the resources, which describe the shared resources (items) to be used by the equipment within the shop.

Computer Aided Manufacturing, 2nd Edition, Chang T.C., Wysk R.A., Wang H.P., 1998 Page: 641)

Direct Clustering Algorithm: The alghoritmic procedure is as follows;

Step 1. Calculate the total number of positive cells in row wi,

Step 2. Calculate the total number of positive cells in row wj,

Step 3. For i=1 to n move all columns j, where Mij=1, to the right, maintaining the order of previous rows.

Step 4. For j=m to 1 move all columns i, where Mij=1, to the top, maintaining the order of previous columns.

Step 5. If the current matrix is the same as the previous matrix, stop, or else go to step 3.

(Computer Aided Manufacturing, 2nd Edition, Chang T.C., Wysk R.A., Wang H.P., 1998 Page: 503)

Data Models: IEC defines a wide range of data models. Before a variable can be used, it must be declared as one of the data models. Data models include the following;

SINT, INT, USINT, UINT, REAL, LREAL, TIME, DATE, TOD, STRING, BOOL, BYTE, WORD, LWORD, DT ...

(Computer Aided Manufacturing, 2nd Edition, Chang T.C., Wysk R.A., Wang H.P., 1998 Page: 202)

F-Code: F-Code specifies the feed speed of the tool motion. It is relative speed between the cutting tool and the workpiece. It is typically specified in ipm. From a machinability data hand book, feed is given in ipr. A conversion has to be done either by hand or on-board controller. Some controllers offer a G-Code that specifies the ipr programming mode. When the ipr programming mode is used the tool diameter and the number of teeth must be specified by the operator. The F-Code must be given before G01, G02 or G03 can be used. Feed speed can be changed frequently in a program, as needed. When an F-Code is present in a block, it takes effect immediately.

(Computer Aided Manufacturing, 2nd Edition, Chang T.C., Wysk R.A., Wang H.P., 1998 Page: 367)