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A wire drawing process of a wiper arm

A wiper arm and process technology, which is applied in the production process of auto parts, can solve problems such as uneven stress distribution of wiper arms, failure to improve the manufacturing process, and breakage of wiper arms, so as to promote internal structure optimization and production. High efficiency and reduced pull-out force

Inactive Publication Date: 2018-11-09
CIXI LONGSHAN AUTOMOBILE PART
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, as an accessory, the wiper arm has not been improved in its manufacturing process due to the homogeneity of the manufacturer's manufacturing standards.
In the prior art, automobile wiper arms are formed by direct die-casting. The process is: casting-machining (turning, milling)-punching, with many procedures, long production cycle, high energy consumption and high efficiency. Low cost, high cost, can not better meet the needs of production development
Moreover, due to the problem of uneven stress distribution of the wiper arm due to the die-casting process, repeated use may easily cause breakage at both ends of the wiper arm of the car, and slipping will occur when the joint rotates, which may easily cause the wiper to fail. Hidden danger

Method used

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  • A wire drawing process of a wiper arm
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  • A wire drawing process of a wiper arm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A wire drawing process of a wiper arm. The galvanized sheet is ultrasonically drawn to obtain a wiper arm blank, and then the wiper arm blank is sequentially punched, stretched and roughly shaped to obtain a wiper arm; wherein, the ultrasonic wire drawing The specific method is: preheat the wire drawing die to 500°C, raise the temperature of the heating furnace of the wire drawing machine to 1400°C, put the galvanized sheet into the wire drawing machine for processing, apply ultrasonic excitation through the ultrasonic generator, the ultrasonic frequency is 30kHz, and the power supply The voltage is 250V, the current is 0.4A; and silica sol and graphite milk with a mass ratio of 1:1 are used as lubricants, the drawing speed is 500mm / s, and the working taper of the drawing die is 10°.

[0037] The galvanized sheet is pretreated before use, and the wiper arm blank is wiped at a high temperature of 800°C before punching. The specific steps of pretreatment are as follows:

...

Embodiment 2

[0047] A wire drawing process of a wiper arm. The galvanized sheet is ultrasonically drawn to obtain a wiper arm blank, and then the wiper arm blank is sequentially punched, stretched and roughly shaped to obtain a wiper arm; wherein, the ultrasonic wire drawing The specific method is: preheat the wire drawing die to 600°C, raise the temperature of the heating furnace of the wire drawing machine to 1500°C, put the galvanized sheet into the wire drawing machine for processing, apply ultrasonic excitation through the ultrasonic generator, the ultrasonic frequency is 40kHz, and the power supply The voltage is 300V, the current is 0.6A; and silica sol and graphite milk with a mass ratio of 1:1 are used as lubricants, the drawing speed is 600mm / s, and the working taper of the drawing die is 12°.

[0048] The galvanized sheet is pretreated before use, and the wiper arm blank is wiped at a high temperature of 900°C before punching. The specific steps of pretreatment are as follows:

...

Embodiment 3

[0058] A wire drawing process of a wiper arm. The galvanized sheet is ultrasonically drawn to obtain a wiper arm blank, and then the wiper arm blank is sequentially punched, stretched and roughly shaped to obtain a wiper arm; wherein, the ultrasonic wire drawing The specific method is: preheat the wire drawing die to 500°C, raise the temperature of the heating furnace of the wire drawing machine to 1500°C, put the galvanized sheet into the wire drawing machine for processing, apply ultrasonic excitation through the ultrasonic generator, the ultrasonic frequency is 30kHz, and the power supply The voltage is 300V, the current is 0.4A; and silica sol and graphite milk with a mass ratio of 1:1 are used as lubricants, the drawing speed is 600mm / s, and the working taper of the drawing die is 10°.

[0059] The galvanized sheet is pretreated before use, and the wiper arm blank is wiped at a high temperature of 800°C before punching. The specific steps of pretreatment are as follows:

...

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Abstract

The invention discloses a drawing process of a wiper arm. The drawing process comprises the following steps that a galvanized plate is drawn through ultrasonic wave, and a wiper arm blank is obtained; and then the wiper arm blank is punched, stretched and coarse-shaped to obtain the wiper arm. The specific method of ultrasonic wave drawing comprises the following steps that a drawing die is preheated to 500-600 DEG C, the furnace temperature of a heating furnace of a wire drawing machine is risen to 1400-1500 DEG C, the galvanized plate is put into the wire drawing machine for being machined, ultrasonic excitation is applied through a ultrasonic generator, the ultrasonic frequency is 30-40kHz, the power supply voltage is 250-300 V, and the current is 0.4-0.6 A; and silica sol and graphite emulsion with the mass ratio of 1:1 are used as lubricant, and the drawing speed is 500-600mm / s. The drawing process of the wiper arm has the characteristics of being high in production efficiency, low in energy consumption and high in product quality and the like, the percent of pass of an obtained wiper arm product is high, and the mechanical properties and corrosion resistance are good.

Description

technical field [0001] The invention relates to a wire drawing process, in particular to a wire drawing process of a wiper arm. The invention belongs to the technical field of production technology of auto parts. Background technique [0002] The domestic vehicle industry has developed rapidly in recent years, and with its huge market potential, it has attracted the attention of many world-renowned automakers, including Volkswagen. China has become a world-renowned automobile producer in just a few years. [0003] Among many car accessories, the wiper arm is the bar that supports the wiper in front of the car, and is the part that connects the wiper to the car. The wiper is equivalent to a human hand, and the wiper arm is equivalent to a human arm. Safe driving of a car in rainy weather is very important. If the car does not have a car wiper in rainy weather, the user cannot drive the car. Therefore, the wiper is an integral part of the car. [0004] However, as an access...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/00B21C9/00B21C1/00
CPCB21C1/00B21C9/00B21C37/00
Inventor 金云康
Owner CIXI LONGSHAN AUTOMOBILE PART
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