Plate-type workpiece pre-punching mould
A technology for pre-punching and workpieces, applied in the direction of perforating tools, manufacturing tools, metal processing equipment, etc., can solve the problems of thinning of the end face of the turning hole, failure to meet the size, and failure to meet the precision requirements of turning holes, etc., to achieve The hole wall is full and the hole wall is not easy to crack
Inactive Publication Date: 2012-05-02
无锡晶心精密机械有限公司
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Problems solved by technology
[0002] In the prior art, when general parts are turned over, the common practice is to punch a pre-punched hole on the part first, and then turn over the hole. The thinning of the end face of the orifice is serious, and the edge is easy to crack, which cannot meet the accuracy requirements of turning the hole
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[0008] The present invention will be further described below in conjunction with specific drawings and embodiments.
[0009] As shown in the figure, the present invention is mainly composed of a stripping plate 1, a die insert 3, a die plate 4, a punching depression 4.1, a pre-punching punch 5, a punching cylinder 5.1 and a pressing spring 6 and the like.
[0010] The plate workpiece pre-punching die includes a stripping plate 1, a die insert 3, a concave template 4 and a pre-punching punch 5, a stripping plate 1 is provided on the concave template 4, and a stripping plate A punch hole is provided, and a pre-punching punch 5 is inserted into the punch hole, and a die insert 3 is arranged in the concave template 4, and the bottom end of the pre-punching punch 5 is integrally connected with a punch The hole cylinder 5.1, the bottom edge of the punching cylinder 5.1 is sharp, that is, the bottom surface of the punching cylinder 5.1 and the side wall pass through a right angle tra...
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The invention relates to a plate-type workpiece pre-punching mould. The plate-type workpiece pre-punching mould comprises a material discharging plate, a female mould insert, a female mould plate and a pre-punching punch, wherein the material discharging plate is arranged on the female mould plate; the material discharging plate is provided with a punch hole; the pre-punching punch is inserted into the punch hole; the female mould insert is arranged inside the female mould plate; a bottom end part of the pre-punching punch is integrally connected with a punching cylinder; the edge at the bottom end of the punching cylinder is sharp; a top end surface of the female mould plate is provided with a punching concave; and the punching concave is matched with the punching cylinder. When the plate-type workpiece pre-punching mould is used, the hole wall of a punched hole is plump, and a phenomenon that the hole wall cracks is difficult to appear.
Description
technical field [0001] The invention relates to a cold stamping die, in particular to a pre-punching die for plate workpieces. Background technique [0002] In the prior art, when general parts are turned over, the common practice is to punch a pre-punched hole on the part first, and then turn over the hole. The thinning of the end face of the orifice is serious, and the edge is easy to crack, which cannot meet the precision requirements of turning the hole. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a pre-punching die for plate workpieces with relatively full hole walls and less prone to hole wall cracking. [0004] According to the technical scheme provided by the present invention, the pre-punching mold for plate workpieces includes a stripping plate, a die insert, a concave template and a pre-punching punch, and a stripping plate is provided on the concave template. A punch hole...
Claims
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IPC IPC(8): B21D28/34
Inventor 沈建军
Owner 无锡晶心精密机械有限公司