FIELD: foundry, namely manufacture of complex-configuration castings with undercuts along outer surface.
SUBSTANCE: pattern fitting includes housing with four movable sections mounted between yoke and pressure plate and mutually joined by means of vertical beam. Movable section has two parts with supporting surfaces engaging with locking member and with mechanism for moving sections. Vertical beam is provided with movable crosspiece that is kinematically joined with plates through tie rod and lever whose axle is secured to yoke. Pressure plate includes shaping member for forming centering surface used for further placing into parting-free casting mold core that defines gating system and inner diameter of casting.
EFFECT: enhanced quality of castings.
3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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| CORE FOR VACUUM MOULDING OF LARGE-SIZE MOULDS | 0 |
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SU1294454A1 |
