CN103357803A

CN103357803A - Machining method of profiling lower die blank of 22224 aligning spherical roller

Info

Publication number: CN103357803A
Application number: CN2013102284376A
Authority: CN
Inventors: 王恒臣
Original assignee: Dalian Metallurgy and Bearings Co Ltd
Current assignee: Dalian Metallurgy and Bearings Co Ltd
Priority date: 2013-06-09
Filing date: 2013-06-09
Publication date: 2013-10-23

Abstract

The invention relates to a machining method of a profiling lower die blank of a 22224 spherical roller. The method is characterized by comprising the following processing steps that: the profiling lower die blank of the 22224 spherical roller takes Gr15 high-carbon chromium high-quality steel as a material; the material is prepared and blanked (a material diameter phi is 120 and a blanking length is 175); start forging temperature is 1100-1130 DEG C. The specific machining method comprises the steps of: upsetting, forging a square, drawing the square, upsetting, forging the square, drawing the square again, upsetting, forging the square, drawing the square again, loading a casing and forming at forging-stop temperature of 800-900 DEG C, forming potholes in the end faces of a die with a forming punch, allowing a metal fiber direction of the material to be perpendicular to a stress axis direction of the lower die, and allowing fiber directions of the material around the potholes to be perpendicular to a stress direction during profiling, wherein an allowance between the dimensions of each pothole and a cavity is 1.5-2mm. The service life of the profiling lower die machined by the method can be prolonged by 2-3 times.

Description

A kind of processing method of 22224 aligning seat roller die mould counterdie blanks

Technical field

The present invention relates to a kind of bearing parts manufacturing technology field, specifically relate to a kind of processing method of roller die mould counterdie blank forging of 22224 aligning seat roller bearings.

Background technology

The general processing method of part spherical roller in the present 22224 aligning seat roller bearings is that the processing method of grinding behind the first car processes, because the production lot of 22224 bearings is larger, the size of roller (diameter of phi 25 length 21.14) is used the Vehicle Processing way, about the quantity 350-450 spare of one chassis bed per tour processing, efficient is too low, can die mould quantity about 8000 with processing method per tour of forcing press die mould, although die mould is fast, be crucial the service life of die mould counterdie.

Replace turning processing method in order to solve 22224 aligning seat rollers with the Profile procoess method, increase work efficiency, be crucial the service life of press-moulding die, the tonnage that 22224 aligning roller (diameter of phi 25 length 21.14) forcing press die mould needs is more than 160 tons, die mould counterdie overall dimensions (external diameter Φ 140 length 110), material selection Gr15 Gao Tan Chrome high-quality steel, forge blanking (material footpath Φ 120 blank length 175), make for three times the metallic fiber perpendicular direction be subjected to force direction by repeatedly forging, then go out a cave nest that stays processing capacity 1.5-2 millimeter with forming punching head respectively at the end face of mould, this quadrat method forges the 22224 die mould counterdies that next counterdie blank reprocesses out, in the use procedure of roller die mould, than the die mould counterdie that other method processes, improved 2-3 service life doubly.

Summary of the invention

Purpose of the present invention provides a kind of processing method of 22224 aligning seat roller die mould counterdie blanks, film long service life under the die mould that this method is made, and improved operating efficiency.

The technical scheme that adopts is:

A kind of processing method of 22224 aligning seat roller die mould counterdie blanks comprises following processing step:

(1), blanking: select Gr15 Gao Tan Chrome steel, forge blanking: material is Φ 120mm directly, and blank length 175mm treats that the forging casting is for subsequent use;

(2), will forge the material jumping-up after, the side of forginging, general side pulls out; Jumping-up again, forging side, again general side's pulling; Jumping-up again, forging side, the pulling of general side, fill the tire moulding after continuous three times successively, then go out a cave nest that stays processing capacity 1.5-2 millimeter with forming punching head respectively at the end face of mould, make the metallic fiber direction of material vertical with the stressed axis direction of counterdie, the machine direction of cave nest periphery material and the stressed perpendicular direction of die mould, and get final product.

In the above-mentioned steps, the beginning forging temperature is 1100-1130 ° of C, and stopping forging temperature is 800-900 ° of C.

Description of drawings

Fig. 1 is die mould counterdie schematic diagram; Die mould counterdie blank schematic diagram.

The specific embodiment;

(1), blanking: select Gr15 Gao Tan Chrome steel, forge blanking, material is Φ 120 directly, and blank length 175 treats that the forging casting is for subsequent use;

(2), the beginning forging temperature is 1130 ° of C, will forge expect jumping-up after, forging side, general side pulling, jumping-up again, forging side, general side pulling, jumping-up again, forging side, general side pulling fills the tire moulding after continuous three times successively, stops forging 800 ° of C of temperature, then go out a cave nest that stays 2 millimeters of processing capacities with forming punching head respectively at the end face of mould, make the metallic fiber direction of material vertical with the stressed axis direction of counterdie, the machine direction of cave nest periphery material and the stressed perpendicular direction of die mould, and get final product.

Claims

1. the processing method of an aligning seat roller die mould counterdie blank comprises following processing step:

(2), the beginning forging temperature is 1100-1130 ° of C, will forge expect jumping-up after, forging side, general side pulling, jumping-up again, forging side, general side pulling, jumping-up again, forging side, general side pulling fills the tire moulding, temperature 800-900 ° C during stopping forging after continuous three times successively, then go out a cave nest that stays processing capacity 1.5-2 millimeter with forming punching head respectively at the end face of mould, make the machine direction of material vertical with the stressed axis direction of counterdie, the machine direction of cave nest periphery material and the stressed perpendicular direction of die mould, and get final product.

?