A kind of tooth plate fine blanking die for improving angle of collapsingTechnical field
The present invention relates to a kind of tooth plate fine blanking die, specifically a kind of tooth plate fine blanking die for improving angle of collapsing belongs toTooth plate fine blanking die technical field.
Background technology
Fine blanking die is directly to go out that cross section quality is good on plate, the stamping die of the high part of dimensional accuracy, is applicable inIn the production of high-volume high-precision plate part.At present, in automobile making, household electrical appliance are obtained extensively in close instrument manufacturingUsing.
In the prior art, fine blanking die easily forms larger angle of collapsing when producing tooth plate in the teeth portion of tooth plate, and angle of collapsing is generalIn more than 20-30%, it is difficult to meet the product requirement of most fines.Tooth plate can be allowed without angle of collapsing using shaving technique, but need to adoptWith continuous mould, the complexity of mold design and manufacture cost are improved, reduces stock utilization.
Invention content
It is an object of the present invention to overcome the above deficiencies, so as to provide a kind of tooth plate fine blanking die for improving angle of collapsing,The angle of collapsing generated in the molding of tooth plate fine can be reduced, improve the molding quality of tooth plate fine.
According to technical solution provided by the invention, it is a kind of improve collapse angle tooth plate fine blanking die include tooth plate molding concave die andStrengthen gear ring, it is characterized in that：It is equipped in tooth plate molding concave die for the molding tooth plate shaping mold cavity of tooth plate, tooth plate shaping mold cavity oneEnd is equipped with die cavity teeth portion；It is equipped in molding concave die upper surface towards die cavity teeth portion position edge and strengthens gear ring, strengthened gear ring and includeGear ring ontology, gear ring ontology are equipped with denticle towards gear ring side is strengthened, and denticle coincide with die cavity teeth portion tooth profile.
Further, strengthen gear ring and be equipped with a circle gear ring flange along edge.
Further, the thickness range for strengthening gear ring is process tooth plate thickness 20 ~ 30%.
Compared with the prior art the present invention has the following advantages：
The invention has the advantages of simple structure, compactness and reasonable structure, is set in mold teeth portion and strengthens gear ring, can reduce and be produced in the molding of tooth plate fineThe molding quality of tooth plate fine is improved at raw angle of collapsing.
Description of the drawings
Fig. 1 is stereogram of the present invention.
Fig. 2 is front view of the present invention.
Fig. 3 is vertical view of the present invention.
Reference sign：1- tooth plates molding concave die, 2- tooth plates shaping mold cavity, 3- die cavitys teeth portion, 4- strengthen gear ring, 5- teethEnclose ontology, 6- denticles, 7- gear ring flange.
Specific embodiment
The present invention will be further described with reference to the embodiment in attached drawing below：
As shown in Fig. 1 ~ 3, the invention mainly comprises tooth plate molding concave die 1 and strengthen gear ring 4, be equipped with and use in tooth plate molding concave die 1In the molding tooth plate shaping mold cavity 2 of tooth plate, 2 one end of tooth plate shaping mold cavity is equipped with die cavity teeth portion 3.
It is equipped in 1 upper surface of molding concave die towards 3 position edge of die cavity teeth portion and strengthens gear ring 4, strengthened gear ring and include gear ringOntology 5, gear ring ontology 5 are equipped with denticle 6 towards 4 side of gear ring is strengthened, and denticle 6 coincide with 3 tooth profile of die cavity teeth portion so that plateMaterial enters die cavity teeth portion 3 when rushing in die cavity teeth portion 3 along denticle 6.
The thickness range for strengthening gear ring 4 is process tooth plate thickness 20 ~ 30%.
The reinforcement gear ring 4 is equipped with a circle gear ring flange 7 along edge.
The present invention operation principle be：In tooth plate forming process, plate is placed on concave-convex mould holder, punch-pin band movable plateInto in the tooth plate shaping mold cavity of cavity plate, plate initially enters to be strengthened in gear ring material, strengthens gear ring by plate at die cavity teeth portionIt squeezes, so as to make product in deformation process, has enough materials that can add to teeth portion and collapse at angle, collapse angle so as to reach reductionPurpose.