Grinding Stroke Control Device for Valve Stem
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Solution Overview
Problem
Conventional grinding stroke control devices for valve stem grinding apparatuses are complex and difficult to operate, requiring multiple components like position reset meters and length measuring meters for precise measurements and positioning.
Innovation Solution
A simplified grinding stroke control device with a positioning mechanism and rotary mechanism, featuring a hand wheel, dial gauge, and telescopic rods, allows for easy operation by measuring and adjusting the valve stem length to achieve standard valve clearance without moving in the transverse direction, using a gripping groove and press rod for secure fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple components (position reset meter, length measuring meter) are used for precise measurement and positioning, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines the position reset meter and length measuring meter into a single integrated measuring mechanism. The measuring meter includes a telescopic rod that serves both positioning and length measurement functions, eliminating the need for separate components and reducing overall device complexity while maintaining measurement precision.
Solution Approach 2:
The telescopic rod in the measuring meter performs multiple functions: it acts as a positioning reference, measures length, and enables both initial positioning and subsequent measurement operations. This multi-functional component reduces the number of separate parts needed in the system.
2Manufacturing precision
If multiple components (position reset meter, length measuring meter) are used for precise measurement and positioning, then manufacturing precision is improved, but ease of operation deteriorates
Solution Approach 1:
By merging the position reset and length measurement functions into a single measuring meter with one telescopic rod, the operation sequence is simplified. The user only needs to operate one measuring mechanism instead of coordinating multiple separate meters, making the grinding control easier to perform while maintaining precision.
3Device complexity
If a simplified structure without multiple meters is used, then device complexity is reduced, but measurement precision may deteriorate
Solution Approach 1:
The patent replaces complex mechanical measurement systems (multiple separate meters) with a simplified single-meter system that uses a telescopic rod mechanism. This substitution achieves both structural simplification and maintained precision through the design of the single measuring component that integrates multiple measurement functions.
Data Source
AI summary
A grinding stroke control device for a valve stem grinding apparatus is fixed to a processing machine and provided for gripping a valve stem or a test bar. Using the hand wheel, the dial gauge and the positioning seat can obtain an initial position, then moving the measuring meter of the positioning mechanism along the transverse direction to make sure the valve stem has the right length with a standard valve clearance. By such arrangements, the grinding stroke control device for a stem valve grinding apparatus of the invention can have a less complicated structure and therefore is more convenient to operate.