I． Mould layout
<1>The position in the inner mould shall be placed for optimized effect. Gate and mould parting plane shall be considered, which shall be in proportion to overall size and depth.
<2>Distance between the product and the finish frame edge:
A) Small product: distance within 25mm~30mm, distance between final products within 15mm~20mm, if there are inserts, this distance shall be 25mm or so; if there is runner between products, this distance shall be at least 15mm.
B) Large product: Distance to the edge is 35~50mm; if there are inserts this distance shall be at least 35mm; if several small products from one pieces steel part, then this distance shall be at least 12~15mmor so. The final product length is more than 200mm, width more than 150mm. For products above the distance from the edge shall be not less than 35mm.
<3> Reference selection principle during product arrangement:
A) Parts with obvious characteristics shall be selected at first (such as pillar, piercing hole, ribs)
B) During selection of PRO/E 3D reference, the name for CSO, CSI or DTM shall be indicated.
C) For products with special shape which is difficult to define reference, discuss at first with CAM.
D) Product reference and moldbase must be integers. And square frame shall be added on these figures during dimensioning for distinction.
<4> The principle to define X, Y coordinate directions of inner mould finish frame during arrangement: If there is obvious difference between length and width of the inner mould finish frame, then the direction of the longer dimension shall be taken as X coordinate axis to place the moldbase in order to match with machine tool machining direction to decrease error rate.

II. Custom moldbase
<1> It is better to use standard moldbase (LKM standard or Hongfeng standard).
A) When the I-shape mould is changed to straight mould, do not move the square iron, place the mould pits directly on the square iron.
B) Non-standard mould base shall be used upon approval of the supervisor and shall be indicated on the arrangement drawing.
<2> During fabrication of CH shape and CT shape mould base, mould pits shall be placed, height and width of which are 25~35mm or so, the length is defined according to height of mould base.
<3> 1, 2 or 4 ejector stick holes shall be made according to the size of mould base (When more than 1 ejector stick holes are to be made, long ejector stick shall be adopted. Ejector stick hole for mould base center is not necessary to make)For mould base with a height up to 400mm (including 400mm), hole diameter within 35mm ~ 40mm, one ejector stick hole shall be made. For mould base with a height more than 400mm, 2 or 4 ejector stick holes shall be made, and distance between holes shall be made according to document.
<4> Spring bow hole diameter shall be within1~2mm, the depth hidden inside B plate shall be at least 20～30mm.
<5>Output of base working drawing: Sprue bushing(flange), spring hole, square supporter installation fovea or edge nail holes shall be made by the mould base supplier; For large mould base（ 800X800）, head support hole (including bottom screw hole), oblique-square hole, oblique-square bronze inserts, oblique-square sice, tier, tier press board, water conveyor, water barrel etc. shall be made; For pin point gate mould base, water spout tie rod, spring bow gel hole, gel drawing hole, plug-type thread hole etc. shall be made; Before the mould base machining drawing is output, consult requirements of the plant, define machining objective according to practical amount of work in the plant.
<6>Mould base with side gate mould base larger than 2730: A plate thickness shall be within finish frame depth plus 25mm~35mm, B plate thickness shall be within finish frame depth plus 50mm~70mm; Mould base up to 2525: A plate thickness shall be within finish frame depth plus 25mm~30mm, B plate thickness shall be within 40mm~50mm.
<7>Pin point gate mould base: A plate thickness shall be within finish frame depth plus 30mm~40mm, B plate thickness shall be within finish frame depth plus 50mm~60mm (Size of large and pin point gate mould base shall be defined according to LKM mould base data).