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Improved electric screwdriver

An electric screwdriver, an improved technology, applied in the direction of screwdrivers, motor tools, portable motorized devices, etc., can solve the problems of unreliable internal structure, electric screwdriver can't work, affect work efficiency, etc., to improve practicability and service life, Excellent filling performance and guaranteed work efficiency

Active Publication Date: 2015-01-07
ZHEJIANG MINGLEI TOOLS IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, most of the electric screwdrivers have a relatively simple structural design, a large volume, and the internal structure is not fixed firmly. During the working process, the interior is prone to shaking, which affects the work efficiency, and the existing electric screwdrivers generally cannot be used in a narrow space. Internal operation, it is not convenient to use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] According to the composition and mass percentage of the aluminum-silicon-copper alloy of the gearbox body described in Table 1, Example 1, add half of the aluminum ingot first, and then add copper, manganese and the rest after the aluminum ingot is completely melted at 700 ° C. For aluminum ingots, after the copper and manganese are completely melted, adjust the temperature of the molten aluminum to 710°C and press into the magnesium sheet, and stir the melted aluminum evenly;

[0051] The smelted filtrate is successively refined by deslagging and degassing. The refining temperature is 720°C, and the refining agent is hexachloroethane. The temperature is 620°C, the injection pressure is 60MPa, the mold temperature is 550°C, and the mold opening time is 150s; the die-casting process adopts intermediate annealing, that is, annealing is performed after 1,000 injections; annealing is performed after 5,000 injections; and After 10,000 injections, anneal again, and then 20,00...

Embodiment 2

[0054] According to the composition and mass percentage of the aluminum-silicon-copper alloy of the gearbox body described in Table 1 and Example 2, add half of the aluminum ingot first, and then add copper, manganese and the rest after the aluminum ingot is completely melted at 730 ° C. For aluminum ingots, after the copper and manganese are completely melted, adjust the temperature of the molten aluminum to 725°C and press into the magnesium sheet, and stir the melted aluminum evenly;

[0055]The smelted filtrate is successively refined by deslagging and degassing. The refining temperature is 740°C, and the refining agent is hexachloroethane. The temperature is 640°C, the injection pressure is 70MPa, the mold temperature is 575°C, and the mold opening time is 190s; the die-casting process adopts intermediate annealing, that is, annealing is performed after 2,000 injections; annealing is performed after 5,000 injections; and After 10,000 injections, anneal again, and then 25,...

Embodiment 3

[0058] According to the composition and mass percentage of the aluminum-silicon-copper alloy of the gearbox body described in Table 1 and Example 3, add half of the aluminum ingot first, and then add copper, manganese and the rest after the aluminum ingot is completely melted at 760 ° C. For aluminum ingots, after the copper and manganese are completely melted, adjust the temperature of the molten aluminum to 740°C and press into the magnesium sheet, and stir the melted aluminum evenly;

[0059] The smelted filtrate is successively refined by deslagging and degassing. The refining temperature is 760°C, and the refining agent is hexachloroethane. The temperature is 670°C, the injection pressure is 80MPa, the mold temperature is 600°C, and the mold opening time is 230s; the die-casting process adopts intermediate annealing, that is, annealing is performed after 3,000 injections; annealing is performed after 5,000 injections; and After 10,000 injections, anneal again, and then 30...

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Abstract

The invention belongs to the technical field of electric tools, and relates to an improved electric screwdriver. The improved electric screwdriver comprises a back casing, and a front casing in hinged connection to the front end of the back casing, wherein a gearbox shell made of an aluminum-silicon-copper cast aluminum alloy is mounted at the front end of the front casing; the aluminum-silicon-copper cast aluminum alloy consists of the following components in percentage by mass: 11.0-13.0% of Si, 1.3-2.5% of Cu, Mg not higher than 0.3%, Mn not higher than 0.5%, 0.8-1.0% of Fe, Zn not higher than 0.5%, 0.2-0.5% of Sn, 0.02-0.08% of Ni, Pb not higher than 0.20%, 0.12-0.16% of Ti, and the balance of aluminum; a power supply, a starting switch and an illuminating module are mounted in the back casing; and a gearbox assembly and a motor are mounted in a closed space formed by the front casing and the gearbox shell. The electric screwdriver has the advantages of stable performance, high flexibility and high hardness.

Description

technical field [0001] The invention belongs to the technical field of electric tools and relates to an improved electric screwdriver. Background technique [0002] An electric screwdriver is an electric tool used for tightening and loosening screws (screws). It is mainly used in assembly lines. It can force the screws in place or make the screws out of the tooling position. It is one of the necessary tools for most production companies. The electric screwdriver is also a tool often used by electricians during maintenance work. Since the screws come in various styles, such as flat-head screws and cross-head screws, the electric screwdriver can be equipped with various styles of bits to match different screws. [0003] In the prior art, most of the electric screwdrivers have relatively simple structural design, large volume, unreliable internal structure, and easy to shake inside during the work process, which affects work efficiency, and the existing electric screwdrivers ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B21/00B25F5/00
CPCB25B21/00B25B23/18B25F5/001B25F5/02C22C21/02
Inventor 翁磊
Owner ZHEJIANG MINGLEI TOOLS IND
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