The difference between single die, continuous die and compound die in stamping die
Stamping dies can be divided into simple stamping dies,continuous stamping dies, and composite stamping dies according to the degree of process combination, but composite dies are relatively rare in the industry, so what is the difference between single punching dies, continuous dies and composite dies of stamping dies?
1-A simple stamping die is an open die
Single punch means that only one process of punching or blanking is completed in one punch. Simple stamping dies can be divided into:
(1) The unguided single-process model is simple in structure, light in weight, small in size, easy to manufacture and low in cost. However, the use and installation of the die is troublesome, the die life is low, the precision of the stamping parts is poor, and the operation is not safe. Simple die without guide is suitable for stamping parts with low precision requirements and simple shapes.
(2) The guide plate type simple stamping die has high die precision, long service life, installation frame and safe operation, but the manufacturing is more complicated. Generally, it is suitable for workpieces with simple shape and small size.
(3) The guide column type simple stamping die is accurate and reliable, which can ensure the uniform punching gap, the stamped workpiece has high precision, the die has a long service life, and it is easy to install and use on the punching machine, so the guide column type stamping die is the most suitable The widest variety of die, suitable for mass production.
2- Continuous stamping die
Definition of Progressive Die Press: According to a certain sequence of procedures, punching is completed at different positions of the die, also known as progressive die or skip die. The positioning principle of the Metal Stamping Tooling can be divided into: the positioning principle of the guide pin and the principle of the side blade spacing. Due to the large number of Metal Stamping Die stations, it is necessary to solve the problem of accurate positioning of the strip or strip material to punch parts with a Progressive Stamping. It is possible to ensure the quality of stamping parts.
3-Composite stamping die
The definition of composite stamping die: a stamping die that simultaneously completes the upper process of the inner hole and the outer shape at the same station of the Stamping Die Manufacturing. According to the structure, the composite stamping die can be divided into: a positive-loading composite die and a flip-chip composite die. The characteristics are: the production efficiency is doubled; the quality of the Sheet Metal Stamping Dies is improved; the mold manufacturing precision is high.
Summary of Custom Metal Stamping Dies:
The single-die structure is simple, the cost of a single die is low, the processing cycle is short, and the adjustment is convenient. It is used for products with complex product structure and small production output. The composite die has a compact structure and high one-time molding accuracy. It is suitable for relatively simple product structures. However, for products with high precision requirements, the Progressive Metal Stamping structure is complex, the production efficiency is high, and the cost is relatively high, Progressive Die Stamping is suitable for products with large output.
How to deal with the breakage of punches in metal stamping production?
1-Reason analysis:
In the metal stamping factory, the bad reasons for the breakage of the punch during the stamping production process:
(1)Chip jumping, chip blocking, card die, etc.
(2)Improper feeding, cut in half.
(3)Insufficient punch strength.
(4)The distance between the big and small punches is too close, and the material traction causes small punches during punching.
(5)The punch and lower die are partially too sharp.
(6) The blanking gap is too small.
(7)There is no metal stamping oil or the metal stamping oil used is highly volatile.
(8) Uneven blanking gap, offset, punch and upper die interfere.
(9)The precision of the stripping inserts is poor or worn, and the precision guiding function is lost.
(10)The mold guide is inaccurate and worn.
(11) Improper selection of punch and lower die material and improper hardness.
(12)The material guide (pin) is worn.
(13)Improper addition of gaskets will cause the punch and the lower die to break.
2-Countermeasures for punch breakage and chipping:
(1)Solve the problems of chip jumping, chip blockage...clamping and so on.
(2) Pay attention to feeding, trim the material belt in time, and clean the Custom Metal Die in time.
(3) Modify the design, increase the overall strength of the punch, reduce the size of the straight blade of the lower Press Tool, pay attention to the slope of the end face of the punch blade, and cut the small part back.
(4)The length of the small punch is shortened by more than one material thickness of the big punch.
(5)Modify the design of Sheet Metal Press Die.
(6)Control the machining accuracy of the lower die of the punch or modify the design clearance, and appropriately increase the punching clearance for small parts.
(7) Adjust the oil amount of metal stamping oil drop or replace the oil type.
(8) Loosely check the melodious accuracy of each forming, and apply adjustment or replacement to control the machining accuracy.
(9)Training or replacement.
(10)Replace the guide post and guide sleeve, and pay attention to daily maintenance.
(11) Replace the material used and use the appropriate hardness.
(12)Correction, the number of gaskets is small, and the right steel gasket can be used as much as possible, and the gasket should be placed under the leakage pad.
Contact Information:
Mr.Terry Young (Sales Manager)
Apollo Electronic Components (Xiamen) Co.,Ltd
Xiamen Apollo Stamping Welding Technology Co., Ltd
Add:225#,Jinshang Road,Huli District,Xiamen City,Fujian Province,China,361009
Tel&Fax: 0592-5765084, Mob/WhatsApp/WeChat: 0086-13859903038 ,QQ: 1260358661
Email: yfd@china-electronic-components.com
Web: www.china-electronic-components.com , www.stamping-welding.com
Since 1990,professional in Silver Contact Rivet&Core&Screw Terminal for Relay&Switch&Contactor ect Stamping&Welding solutions !