Column tube single face square opening punch forming processing method

Abstract

A column tube single face square opening punch forming processing method includes that a special die is adopted to process a column tube single face square opening on a 40T common punch device, the special die is composed of special components of an inner R type cutting edge terrace die, a replaceable wedge type die, a wedge type discharging insert and the like. The processing method includes concrete steps that: (1) punch stroke is adjusted, and bottom dead center is at the position exactly cutting off the wall of the square opening; (2) the orifice blade width of the replaceable wedge type die is 3-4mm, and main body is finished into square cone with small orifice and large cavity; (3) inner R of the cutting edge terrace die is consistent with outer R of the processed column tube; (4) the oblique angles the insert of the replaceable wedge type die and the wedge type discharging insert are all 4 degrees; (5) part processing, namely inserting part into the die, wedging the die, wedgingthe discharging insert and die cutting, is carried out. The column tube single face square opening processed by the invention is uniform and consistent in hole pattern and R, prism is burr-free, roughness reaches Ra1.6, appearance is beautiful, processing efficiency is high, processing precision meets the requirement that tolerance is less than 0.1mm, and the service life of easily damaged die can reach 20000-30000 pieces. Pipe stress is uniform in terrace die cutting, and orifice deformation is small; and the die not only can strengthen tube pillar inner hole but also can be fast dismounted,and need of rapid production is satisfied.

Description

technical field [0001] The invention belongs to a processing method for cylindrical tube parts, in particular to a processing method for a square hole on one side of a cylindrical tube. Background technique [0002] With the rapid development of industries such as automobiles and household appliances, in the manufacturing and processing of parts, the requirements for product quality and production efficiency are getting higher and higher, and the quantity is increasing. Some traditional processing techniques are facing challenges and cannot meet the demand. . The key hole processing of the bobbin tube of the automobile is one of them. The column tube is a standardized pipe sold in the market. The processed keyhole is rectangular with R around it. The processing size accuracy is high, and the allowable size tolerance is 0.1mm. The traditional machining process is: drilling----mold milling ---Pliers, etc., the processing surface is rough and undercut; the accuracy consistenc...

AI Technical Summary

Problems solved by technology

The column tube is a standardized pipe sold in the market. The processed keyhole is rectangular with R around it. The processing size accuracy is high, and the allowable size tolerance is 0.1mm. The traditional machining process is: drilling----mold milling ---Pliers, etc., the processing surface is rough and undercut; the accuracy consistency is poor, and the tolerance is difficult to guarantee; the hole shape is distorted, R is uneven, it is difficult to eliminate edge burrs, and the production efficiency is low

Another processing method is slotting machine processing, the deformation is large, it is difficult to meet the requirements of the data, and the efficiency is low

Images