Cold Space Envelope Forming Method for Thrust Roller Bearing Rings
A technology for thrust roller bearings and cold spaces, applied in forming tools, manufacturing tools, design optimization/simulation, etc., to achieve high material utilization, low production costs, and improved tissue and mechanical properties
Active Publication Date: 2021-10-22
WUHAN UNIV OF TECH
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Currently, there is no report on cold space envelope forming method for thrust roller bearing rings
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0030] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.
[0031] Such as figure 1 , The inner diameter of the thrust roller bearing ring parts to be processed is 47.4mm, the outer diameter is 76mm, and the height is 9.8mm. Its envelope forming method includes the following steps:
[0032] (1) Forging design. Design forgings from thrust roller bearing ring parts. In order to preserve the metal streamline of the raceway of the ferrule, a 0.05mm grinding allowance is added to the surface of the raceway. In order to reduce the subsequent machining allowance, add 0.1mm machining allowance to the remaining surfaces. In order to facilitate demoulding, the draft angle of the inner and outer surfaces of the ferrule is designed to be 3°. At the same time, the end surface of the oute...
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
Login to View More Abstract
The invention relates to a cold space enveloping forming method for a thrust roller bearing ring, comprising the following steps: S1, making a blank; S2, placing the blank on a lower die, and placing a tapered roller above the blank; The mold cavity matches the back of the raceway of the ferrule forging, and the middle of the lower mold cavity is provided with a conical boss matching the inner surface of the ferrule forging, and the boss is higher than the axial height of the inner surface of the ferrule forging; the tapered roller is a The cone that matches the raceway of the forging of the roller bearing ring rotates around its own axis and at the same time revolves around the vertical axis of the equipment passing through the center of the envelope, which is located at the intersection of the upper surface of the forging ring and the vertical axis of the equipment; S3. The lower mold drives the billet to move upward in a straight line, and the tapered roller moves around the center of the envelope. In the invention, a thrust roller bearing ring with a large radial thickness and a small axial height and a raceway located on the end surface is formed by directly enveloping a simple rectangular ring blank in a cold space, so that the production efficiency is high, the material utilization rate is high, and the production cost is low.
Description
technical field [0001] The invention relates to the technical field of bearing ring processing and manufacturing, and more specifically, relates to a cold space envelope forming method for a thrust roller bearing ring. Background technique [0002] Thrust roller bearing is an indispensable key basic part of machine tools, automobiles, trains, ships, airplanes and other sports machinery, and its performance quality directly affects the performance and life of the main engine. The ring is the body of the thrust roller bearing, and its precision and performance directly determine the service performance and service life of the final thrust roller bearing product. The radial thickness of the thrust roller bearing ring is large, the axial height is small, and the raceway is located on the end face of the ring. If it is formed by integral die forging, the deformation resistance is large, and deformation dead zones are prone to occur. The ring raceway cannot be formed smoothly, and...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F30/20B21D37/10B21D31/00
CPCB21D31/005B21D37/10G06F30/17G06F30/20
Inventor 韩星会华林
Owner WUHAN UNIV OF TECH