Grinding Sleeve and Strip Assembly for Uniform Bearing Roller Finishing
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Solution Overview
Problem
Existing finish machining methods for bearing rollers, such as cylindrical, tapered, and spherical rollers, face challenges in simultaneously processing a large number of rollers due to limited groove distribution on grinding discs, leading to inconsistent material removal rates and wear rates, which affect the dimension consistency of the rolling surfaces.
Innovation Solution
A grinding tool kit and apparatus with a grinding sleeve and strip assembly, featuring spiral grooves on both components, allowing for simultaneous machining of multiple rollers with consistent material removal and reduced wear, utilizing magnetic structures for ferromagnetic materials to enhance machining efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If linear grooves are distributed on the regular conical surface of the grinding disc, then the number of grooves is limited by the circumference of the small end, but this limits the quantity of cylindrical rollers that can participate in grinding simultaneously
Solution Approach 1:
The patent transitions from distributing grooves on a two-dimensional conical surface to a three-dimensional cylindrical surface. The cylindrical grinding disc allows grooves to be distributed along the entire circumferential length, effectively utilizing the third dimension (circumferential direction) to increase the number of simultaneous machining positions without increasing complexity at any single cross-section.
Solution Approach 2:
The cylindrical grooves are pre-distributed along the entire circumference of the grinding disc before machining begins. This preliminary arrangement ensures that multiple rollers can be positioned at different circumferential locations and machined simultaneously, maximizing productivity from the start of the process.
2Productivity
If spiral grooves are used on the regular conical surface, then material removal rate varies with position in the spiral groove, but this affects the dimension consistency of the rolling surface
Solution Approach 1:
The patent creates a homogeneous machining environment by distributing identical cylindrical grooves uniformly around the entire circumference of the grinding disc. Each groove operates under the same conditions (same radius from the axis, same rotational speed), ensuring consistent material removal rates and uniform wear across all machining positions, thereby improving dimension consistency.
Solution Approach 2:
The grinding disc is segmented into multiple identical cylindrical groove units distributed around the circumference. Each groove acts as an independent but identical machining element, processing one or more rollers simultaneously. This segmentation allows parallel processing while maintaining uniformity across all segments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables simultaneous machining of a large number of bearing rollers with improved dimension consistency and reduced wear, enhancing the efficiency and precision of finish machining.
Implementation Method 1
a magnetic structure is provided, and the magnetic structure is used for attracting the bearing rollers
Data Source
AI summary
A grinding tool kit, apparatus and method for finish machining of a rolling surface of a bearing roller. The apparatus comprises a main machine, an external circulation system, a grinding tool kit and a grinding tool kit clamp. A configuration of the main machine comprise a grinding strip assembly rotary type and a grinding sleeve rotary type. The external circulation system comprises a collection unit (41), a sorting unit (42), a feeding unit (43) and a transmission subsystem. The grinding tool kit comprises a grinding sleeve (21) remaining coaxial during working, and a grinding strip assembly penetrating through the grinding sleeve (21), an inner surface of the grinding sleeve (21) is provided with a first spiral groove (211); and the grinding strip assembly comprises a plurality of grinding strips (22), front surfaces of which are provided with linear grooves (221) or second spiral grooves distributed in a circumferential columnar array.