Low-voltage circuit breaker energy storage lock machining process and multi-station progressive die used in low-voltage circuit breaker energy storage lock machining process
A multi-station progressive die and low-voltage circuit breaker technology, which is applied in metal processing equipment, perforating tools, forming tools, etc., can solve problems such as yield rate and low production efficiency, and improve product yield rate, compatibility and adaptability Strong performance, the effect of improving the accuracy of the hole position
Pending Publication Date: 2020-06-02
中国振华电子集团宇光电工有限公司(国营第七七一厂)
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Problems solved by technology
The current preparation process is facing the dilemma of low yield and production efficiency
Method used
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Embodiment 1
[0046] Example 1. A low-voltage circuit breaker energy storage lock processing technology, such as Figure 1-4 shown, including the following steps:
[0047] a. Punch guide pinholes and flashes: punch out the upper edge 1 flash of the part, and punch guide pinholes 9 on the strip at the same time;
[0048] b. Leveling: ensure the perpendicularity between the unfolded part plane and the cylinder 2;
[0049] c. Forming: forming the cylinder 2 to ensure the diameter and shape tolerance of the cylinder 2;
[0050] d. Edge trimming: punching the left edge 3 and the right edge 4 of the unfolded part at the same time;
[0051] e. Bending: bend the upper right corner of the unfolded part to form a warping angle 5;
[0052] f. Trimming: Die-cut the lower edge 10 of the unfolded part, and reserve the connecting rib 6 to connect with the strip material;
[0053] g. Forming and bending: bending and forming the unfolded parts to form bent parts;
[0054] h. Punching: punching the cen...
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The invention discloses a low-voltage circuit breaker energy storage lock machining process and a multi-station progressive die used in the low-voltage circuit breaker energy storage lock machining process. The process comprises the following steps that a, a guide pin hole and a flash are punched, specifically, the flash on the upper edge of an unfolded part is punched, and the guide pin hole is punched in a strip; b, leveling is conducted, and specifically, the verticality of the plane and a cylinder of the unfolded part is ensured; c, forming is conducted, specifically, the cylinder is formed, and the diameter size and form and location tolerance of the cylinder are ensured; d, trimming is conducted, and specifically, the left edge and the right edge of the unfolded part are simultaneously punched; e, bending is conducted, and specifically, the upper right corner of the unfolded part is bent to form a warped corner; f, trimming is conducted, specifically, the lower edge of the unfolded part is punched, and a connecting rib is reserved to be connected with the strip; g, forming and bending are conducted, and specifically, the unfolded part is bent to form a bent part; h, punchingis conducted, specifically, a central hole of the bent part is punched, and the cylinder is punched to ensure the length size of the cylinder; i, shaping is conducted, specifically, the bent part is shaped to ensure the bending angle of the bent part, and the shaped bent part is a finished product; and j, product falling is conducted, and specifically, the connecting rib is punched to enable the finished product to fall from the strip. The low-voltage circuit breaker energy storage lock machining process and the multi-station progressive die used in the low-voltage circuit breaker energy storage lock machining process have the characteristic of improving the product yield and the production efficiency.
Description
technical field [0001] The invention relates to the technical field of processing electrical equipment components, in particular to a processing technology for a low-voltage circuit breaker energy storage lock and a multi-station progressive die used therein. Background technique [0002] The energy storage lock is a key part of the low-voltage circuit breaker; the entire mechanism movement of the low-voltage circuit breaker depends on the transmission of this part. As a precision component of a low-voltage circuit breaker, the energy storage lock has relatively high requirements on the size and shape tolerance of the parts, and its material is stainless steel 022Cr17Ni7 (H1 / 2), which is difficult to process. The manufacturing process of the energy storage lock is mainly sheet metal stamping and forming. At present, how to control the accuracy of the relevant dimensions after multiple bending, forming and stress deformation of the parts has always been a difficult problem in...
Claims
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IPC IPC(8): B21D28/14B21D28/34B21D35/00B21D37/08B21D53/38
CPCB21D28/14B21D28/34B21D35/001B21D35/002B21D37/08B21D53/38
Inventor 周吉冰黄佳杨运兴郭剑斌冉路瑶邓炜
Owner 中国振华电子集团宇光电工有限公司(国营第七七一厂)
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