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Manufacture method of memory metal sheet of circuit breaker for vehicle

A manufacturing method and metal sheet technology, which can be used in circuits, metal processing equipment, electrical switches, etc., and can solve problems such as misjudgment

Active Publication Date: 2011-01-05
AEROSPACE HI TECH HLDG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing memory metal sheets are prone to misjudgment problems in the process of use due to the process

Method used

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  • Manufacture method of memory metal sheet of circuit breaker for vehicle
  • Manufacture method of memory metal sheet of circuit breaker for vehicle

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Experimental program
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Effect test

specific Embodiment approach 0

[0015] DETAILED DESCRIPTION Zero: Combining figure 1 Describe this embodiment, the steps of this embodiment are as follows:

[0016] Step 1: Preheating, heating the strip-shaped memory alloy 2 to 20-40°C through a heater, and keeping the temperature to enter the next process;

[0017] Step 2: Punching holes, using a punching machine combined with a round hole mold to punch out round holes 1 at equal intervals along the length of the strip-shaped memory alloy 2, and the diameter of the round holes 1 is 1mm;

[0018] Step 3: Blanking, use the pneumatic press 3 in combination with the I-shaped stamping die 4 to punch the strip-shaped memory alloy 2 into a rectangular metal sheet with rounded corners, the length of the rectangular metal sheet with rounded corners is 16 mm, The width is 9.5mm and the fillet radius is 4.75mm. The round hole 1 punched in step 2 is located on the rectangular metal sheet with rounded corners, and is located on the center line of the rectangular metal ...

specific Embodiment approach 1

[0024] Specific implementation mode one: combine figure 1 Describe this embodiment, the difference between this embodiment and specific embodiment 1 is that in the process of punching in step 2, a punching machine is used to punch out the round hole 1 and at the same time a guide hole 12 is punched out, and the center of the round hole 1 after punching is The center of the guide hole 12 is located on the same straight line, the straight line is perpendicular to the side of the length direction of the strip-shaped memory alloy 2 , and the guide hole 12 is located on the connecting side 5 . Other steps are the same as in the first embodiment. The guide holes 12 are used for dragging by the puller according to the direction in which the guide holes 12 are arranged in sequence and the interval length of the guide holes 12 in the process from step 3 to step 8.

specific Embodiment approach 2

[0025] Embodiment 2: This embodiment differs from Embodiment 1 or Embodiment 3 in that the strip-shaped memory alloy 2 is formed by mixing or superimposing at least two metals with different thermal expansion coefficients. Other steps are the same as those in Embodiment 1 or 3.

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Abstract

The invention relates to a manufacture method of a memory metal sheet of a circuit breaker for a vehicle, belonging to the manufacture method of the metal sheet. The memory metal sheet with more stable motion can be obtained. The manufacture method comprises the steps of: 1, preheating, and heating to 20-40 DEG C; 2, punching; 3, blanking, and punching a strip metal alloy into a rectangular metal sheet with length of 16mm, width of 9.5mm and corner radius of 4.75mm; 4, thermally treating, carrying out thermal treatment in a vacuum thermal treatment furnace at a temperature of 20-40 DEG C; 5, welding a connecting sheet; 6, welding a moving contact; 7, pressing for three times: pre-profiling pressing, secondary-profiling pressing and sizing pressing, wherein the pressure of a cylinder in each pressing is 10MPa, and the pressing time is 2s; and 8, cutting to form the memory metal sheets of the circuit breaker for the vehicle, which are symmetrically along the center line. The memory metal sheet of the circuit breaker for the vehicle, which has good stability, can be obtained by adopting the manufacture method.

Description

technical field [0001] The invention relates to a method for manufacturing a metal sheet. Background technique [0002] The existing automotive circuit breaker with better functionality is a circuit breaker that uses a memory metal sheet to sense temperature and deform to act as a closing action of the switch. The memory metal sheet of the circuit breaker is one of the important parts of the vehicle circuit breaker. The memory metal sheet utilizes the properties of the memory metal and can operate with high precision according to changes in temperature. In the fault state, the deformation of the memory metal sheet makes the static contact and the moving contact stably separated. When the fault is eliminated, the shape of the memory metal sheet returns to the state of no temperature, the contact between the static contact and the movable contact, and the circuit is normally connected. However, due to the technical process, the existing memory metal sheet is prone to misjudg...

Claims

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Application Information

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IPC IPC(8): H01H11/00B21D53/00B23P15/00
Inventor 傅海林滕胜广刘振新朴雪光杨春生李岩
Owner AEROSPACE HI TECH HLDG GROUP
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