TNC 320 - TNC 640 - DR. JOHANNES HEIDENHAIN GmbH

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Programming in the Workshop – Straightforward Function Keys for Complex Contours Programming 2-D Contours Two-dimensional contours are the daily bread of the modern machine shop. Here the TNC 320 offers a variety of possibilities. Programming with path function keys If contours are dimensioned for NC, which means that the end points are specifi ed in Cartesian or polar coordinates, then you can program them directly with the path function keys. 16 Straight and circular contour elements To program a line segment, for example, simply press the key for linear traverse. The TNC 320 asks for all information required for a complete programming block, such as target coordinates, feed rate, cutter radius compensation and machine functions. Appropriate path function keys for circular movement, chamfers, and corner rounding simplify your programming. To avoid surface blemishes during approach or departure from the contour, it must be approached smoothly—that is, tangentially. Circular path defi ned by its end point, with a smooth (tangential) departure from the previous contour element Circular path defi ned by its center point, end point, and rotational direction Circular path defi ned by its radius, end point and rotational direction You simply specify the starting or end point of the contour and the approaching or departing radius of the cutter edge—the control does the rest for you. The TNC 320 can look ahead over a radius-compensated contour for up to 99 blocks to watch for back cutting and avoid contour damage such as can occur when roughing a contour with a large tool. Straight line defi ned by its end point Rounding: circular path defi ned by radius and corner point, with a smooth (tangential) transition to its adjoining contour elements Chamfer: defi ned by the corner point and the chamfer length
– Programming Contours Unconventionally FK free contour programming Not all workpieces are dimensioned for conventional NC programming. Thanks to FK, the control’s free contour programming feature, in such cases you simply type in the known data—without fi rst having to convert or calculate your data! It does not matter if individual contour elements are not completely defi ned as long as the complete contour has been. If the given data result in more than one mathematical solution, the helpful TNC 320 programming graphics present the possible variants for your selection. 17
Page 1: TNC 320 The Compact Contouring Cont
Page 4 and 5: Compact and Versatile - The Right C
Page 6 and 7: Well Designed and User Friendly - T
Page 8 and 9: Minimize Setup and Nonmachining Tim
Page 10 and 11: Minimize Setup and Nonmachining Tim
Page 12 and 13: Machining with Four Axes - Swivel H
Page 14 and 15: Programming, Editing, Testing - The
Page 18 and 19: Programming in the Workshop - Field
Page 20 and 21: Programming in the Workshop - Reusi
Page 22 and 23: Open for Communication - Fast Data
Page 24 and 25: Workpiece Measurement - Setup, Datu
Page 26 and 27: Positioning with the Electronic Han
Page 28 and 29: Overview - User Functions User func
Page 30: - Options, Accessories Option Optio

TNC 320 - TNC 640 - DR. JOHANNES HEIDENHAIN GmbH

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