Unlock instant, AI-driven research and patent intelligence for your innovation.

Machining process method for vertical grinding undercut thin-wall needle roller outer ring

A processing technology and overrun groove technology, which is applied in the field of bearing machining, can solve the problem that the soft turning method cannot meet the grinding requirements of ribs, and achieve the effect of preventing stress concentration

Active Publication Date: 2021-08-06
AVIC HARBIN BEARING
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem in the prior art that when the overtravel groove of the raceway is 90° perpendicular to the raceway, the soft turning processing method cannot meet the grinding requirements of the rib, and further provides a thin-walled needle roller with a vertical overtravel groove Processing method of outer ring

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Machining process method for vertical grinding undercut thin-wall needle roller outer ring
  • Machining process method for vertical grinding undercut thin-wall needle roller outer ring
  • Machining process method for vertical grinding undercut thin-wall needle roller outer ring

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0031] Specific implementation mode one: combine Figure 1 to Figure 7 Describe this embodiment, a method for processing a thin-walled needle roller outer ring with a vertical overtravel groove in this embodiment, which includes the following steps:

[0032] Step 1. First, locate the outer diameter of the bar stock 13, turn the plane of the bearing 2, drill the inner hole 3 of the bearing, the outer diameter of the bar stock 13 of the car bearing, the oil groove 5 of the car bearing, and the inner corner of the inverted bearing 6 , Invert the outer corner 7 of the bearing and cut off the bearing;

[0033] Step 2, take the plane 2 and the outer diameter 1 after processing the inner angle 6 of the inverted bearing and the outer angle 7 of the inverted bearing as the benchmark positioning, the cut surface 8 of the car bearing, and the plane 2 of the soft grinding bearing;

[0034] Step 3, clamping the outer ring of the bearing cut off in step 2, and rolling the raceway 9 of the ...

specific Embodiment approach 2

[0048] Specific implementation mode two: combination Figure 1 to Figure 2 Describe the present embodiment, the present embodiment

[0049] In step 6, the overtravel grooves 11 on both sides of the soft car bearing adopt parallel blades with a width of 0.7mm, and the oil groove knife feeds at 45°. Such setting is to form a 45° overtravel groove, which provides overtravel preparation for rough grinding ribs. Others are the same as the first embodiment.

specific Embodiment approach 3

[0050] Specific implementation mode three: combination Figure 1 to Figure 2 Describe this embodiment, in step 6 of this embodiment, for the overrun groove 11 on both sides of the soft turning bearing, the cutting speed v1 is 80-100m / min, and the feed speed f1 is 0.05-0.1mm / r. This setting is to ensure the surface quality requirements of the overtravel groove. Others are the same as those in Embodiment 1 or 2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a machining process method for a vertical grinding undercut thin-wall needle roller outer ring. The invention particularly relates to a grinding undercut machining method. The problem that when a roller path grinding undercut is perpendicular to a roller path by 90 degrees, a soft turning machining method cannot meet the flange grinding requirement is solved. The method comprises the steps of plane turning, inner hole drilling, bar outer diameter and oil groove turning, inner angle chamfering, outer angle chamfering and cutting-off; turning a cut surface and softly grinding a plane; turning a roller path; turning flanges on two sides, and removing the acute angles of the flanges to be 45 degrees; chamfering an inner angle and an outer angle; flexibly turning a grinding undercut; carrying out inner hole drilling, hole edge burr removing, submitting and heat treatment; roughly grinding a plane, demagnetizing, finely grinding the plane, roughly grinding the outer diameter, roughly grinding the inner diameter of the outer ring, a flange and the roller path; hard turning the grinding undercut; performing low-temperature supplementary tempering, performing final grinding on a plane, an outer diameter and the roller path, performing acid pickling, and performing hydrogen removal; performing final grinding on the outer diameter, polishing the flange, removing the acute angle of the flange, performing fine polishing, and performing flaw detection; roughly grinding the roller path, finely grinding the roller path, grinding the outer diameter, and performing laser typing; and after demagnetizing, cleaning and submitting, completing machining of the bearing. The method is used in the bearing machining field.

Description

technical field [0001] The invention relates to the field of bearing mechanical processing, in particular to a processing method for a thin-walled needle roller outer ring with a vertical overtravel groove. Background technique [0002] The feed angle of the traditional bearing ring raceway and the overrun groove structure of the rib is 45 degrees. Usually, the method of soft turning undercut in turning processing is used to provide overrun preparation for the grinding of raceways and ribs, and to avoid leaving edges during grinding of raceways and ribs. A certain type of thin-wall needle roller outer ring has no overtravel groove on the rib, and the overrun groove on the raceway is 90° perpendicular to the raceway. According to the requirements of the finished product, after the soft car vertically overruns the groove, the product undergoes heat treatment, which will cause certain deformation and surface discoloration, resulting in the surface quality and precision of the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B23P15/00
CPCB23P15/00B23P15/003
Inventor 唐双晶杨树新姜中玥于安乐邱贺群李岩金贺刘明阳李波周蒙豪孙重阳
Owner AVIC HARBIN BEARING