A forging and inclined window hole punching composite die, comprising an upper die holder, a connection sleeve, an upper die sliding sleeve, a pressure plate, inclined window puncher pins, a center puncher pin, first connection screw rods, first springs, second connection screw rods, second springs, hydraulic assistant systems, a lower die and a bottom plate, wherein
- the upper die holder comprises a circular top surface and a side wall extending downwards around the top surface;
- the side wall has a certain thickness;
- the connection sleeve is of a columnar structure, and the connection sleeve is fixedly connected to a bottom of the top surface of the upper die holder;
- the pressure plate is of a columnar structure;
- a bottom surface of the pressure plate is a plane;
- the center puncher pin is disposed in the connection sleeve and located at a center position of the die;
- the connection sleeve is provided with a plurality of first through holes, around the center puncher pin;
- upper ends of the plurality of first connection screw rods are located in the first through holes of the connection sleeve, and lower ends of the plurality of first connection screw rods pass through the first through holes and are fixed to the pressure plate;
- when the upper die holder is pressed and moves upwards, the upper ends of the first connection screw rods slide in the connection sleeve;
- the first springs sleeve the first connection screw rods between the pressure plate and the connection sleeve;
- the upper die holder is provided with a plurality of second through holes, around the center axial line of the die;
- upper ends of the plurality of second connection screw rods are located in the second through holes of the upper die holder, and lower ends of the plurality of second connection screw rods pass through the second through holes and are fixed to the upper die sliding sleeve;
- the upper die sliding sleeve is of a cylindrical structure;
- the upper die sliding sleeve sleeves outsides of the connection sleeve and the pressure plate;
- a plurality of inclined-down and outward inclined slots corresponding to positions, at which need to be punched with inclined window holes, on a workpiece are formed in the side wall of the upper die holder;
- correspondingly, the upper die sliding sleeve is provided with slopes parallel to the inclined slots;
- sealed cavities and the inclined window puncher pins which correspond to the positions, at which need to be punched with inclined window holes, on the workpiece are disposed in the slopes;
- the inclined window puncher pins are located in the sealed cavities, with both ends extending out of the sealed cavities;
- upper ends of the inclined window puncher pins are located in the inclined slots of the upper die holder;
- lower ends of the inclined window puncher pins punch inclined windows in the workpiece along with the pressing of the upper die holder;
- middle part of each of the inclined window puncher pins has a circle of ring-like protrusion;
- the ring-like protrusion divides the sealed cavity into an upper cavity and a lower cavity;
- each of upper part of the upper cavity and lower part of the lower cavity is provided with an oil pipe joint;
- the hydraulic assistant system is located on the bottom plate;
- the hydraulic assistant system is connected with the oil pipe joints of the upper cavities and the lower cavities;
- when the upper die holder is pressed, the hydraulic assistant system pumps out liquid in the lower cavities and inputs liquid in the upper cavities to push the inclined window puncher pins to be pressed to punch the inclined windows in the workpiece;
- and when the upper die holder moves upwards, the hydraulic assistant system inputs the liquid in the lower cavities and pumps out the liquid in the upper cavities to push the inclined window puncher pins to move upwards and be separated from the workpiece;
- the lower die is disposed on the bottom plate;
- and the lower die is used for placing the workpiece.