The standard way of indicating that the length of the die spring is divided into many types, including the universal compression spring and tension spring. There are also non-traditional shaped springs. Each item is represented differently. The spring specification of the default setting of the spring in the field of elastic yellow is indicated in such ways as: (p2*12*60*15N, where 2 indicates the diameter of the cable, 12 is the diameter, 60 has arbitrary length, 15 has the total number of turns. That is, [cable diameter * diameter * arbitrary length * total number of turns], naturally in which the diameter can also be shown as a medium diameter or inner diameter, write specifications must be marked, for example: (p2*12 (inside) *60*15N. Spring generally reflects only in the specifications and models: cable diameter * diameter * spring length (or including the length of the retractor).

Generally only reflect: cable diameter * diameter * turns due to the main parameters of many key points involved in the elastic yellow commodity, just that simple specification model is unable to properly describe the elastic yellow key points in detail. Below we see from a number of engineering drawings: from the three engineering drawings can be seen, in which there are many main parameters can not be shown from the spring specifications, so there are engineering drawings and technical standards presented to the manufacturer, so that we can make each other on the need to have the same understanding of the yellow, is not easy to lead to mistakes in goods! As shown in the following figure: it is some common drawings, drawing must be appropriate to increase and decrease the contents of the drawings according to the specific.

1, the spring parameters should be immediately marked on the diagram, when immediately marked with difficulties can be indicated in the "technical standards".

2, the general use of detailed method to show the physical properties of elastic yellow. The curves of the physical properties of the cylindrical spiral reduction (Rashen) yellow are drawn as parallel lines, marked above the front view. The physical performance diagram of a cylindrical spiral torsional spring is generally drawn on the left [above the main view, or allowed to be drawn on the front view], and the characteristic diagram is drawn as parallel lines. The physical performance diagram (or parallel line mode) is drawn with thick solid lines.