【正文】
system etc.. (1) The economy number control lather: Adoption step enter electric motor and list slice machine to mon the car of the lather pare into to the system carry o n reformation behind formation of the simple number control lather. The cost is lower, automation degree and function be all more bad, the car pare to process accuracy also not high, be applicable to request not high of turn round type spare parts of the car pare to process. The economy number control lather (2) Common number control lather: Pare to process a request to carry on the structure according to the car specialized design, equipment in general use number control system but formation of number control lather. Number control system function strong, automation degree with process accuracy also more Ago, be applicable to general turn round type spare parts of the car pare to process. This kind of number control lather can control 2 sit a mark stalk in the meantime, namely x stalk and z stalk. Common number control lather (3)the car pare to process center: At mon number control the foundation of lather up, increment C stalk and motive head, more high class of the tool machine still take a knife database, can control X, Z and C 3 sit mark stalk, allied move control stalk can BE(X, Z),(X, C) or(Z, C).Because increment C stalk and Xian pare a motive head, this kind of number control process of lather function consumedly strengthen, in addition to carry on general the car pare, also can carry on path to pare with stalk toward the Xian, the curved face Xian pare, the center line don39。t turn round in the spare parts center of bore and path pare toward the drill of bore etc. process. 2. The liquid press card dish and liquid to press a tail The liquid press card dish is number control a car to pare to process clip tight work piece of importance enclosure, rightness general turn round type spare parts can adoption mon the liquid press card dish。t the spare parts of cylinder form, demand adoption appropriation card dish。s association) but produce of knife, number control lather production manufacturer can according to number control the function of lather request to carry on a choice allocation. In general use knife 4. The Xian pare a motive head Number control lather knife top to install Xian after pare the motive head can consumedly expand number to control process of lather ability. Such as :Make use of the Xian pare a motive head to carry on stalk to drill a hole to pare stalk toward the slot with Xian. The N/ C system consists of the following ponents: data input, the tape reader with the control unit, feedback devices, and the metal—cutting machine tool or other type of N/ C equipment. Data input, also called “man—to—control link”, may be provided to the machine tool manually, or entirely by automatic means. Manual methods when used as the sole source of input data are restricted to a relatively small number of inputs. Examples of manually operated devices are keyboard dials , pushbuttons , switches , or thumbwheel selectors. These are located on a console near the machine. Dials ale analog devices usually connected to a synchrotype resolver or potentiometer . In most cases ,pushbuttons , switches , and other similar types of selectors aye digital input devices. Manual input requires that the operator set the controls for each operation. It is a slow and tedious process and is seldom justified except in elementary machining applications or in special cases. In practically all cases, information is automatically supplied to the control unit and the machine tool by cards, punched tapes, or by magic tape. Eight—channel punched paper tape is the most monly used form of data input for conventional N/ C systems. The coded in