Adjustable Chuck for Emery Wheel Grinding Machine
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Solution Overview
Problem
Conventional emery wheel grinding machines are limited in their ability to effectively grind drill bits and hobbing cutters with multiple blades, as they cannot adjust to varying blade configurations and clearance angles, leading to incomplete finishing of the cutting edges.
Innovation Solution
An emery wheel grinding machine with an adjustable chuck featuring a tilted T-bushing and stop pins, allowing for adjustable chuck angles and precise control over the turning angle of the cutter head, enabling effective shaving of multiple blades and clearance angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional fixed chuck is used, then the structure is simple, but it cannot adjust to varying blade configurations and clearance angles of hobbing cutters with multiple blades
Solution Approach 1:
The chuck is designed with an adjustable tilting mechanism that allows the bushing to be positioned at different angles relative to the emery wheel. This dynamic adjustment capability enables the same chuck structure to accommodate hobbing cutters with different blade configurations and clearance angles, resolving the contradiction between adaptability and structural simplicity.
Solution Approach 2:
The chuck is designed to perform multiple functions by accommodating different types of hobbing cutters (two-blade, three-blade, four-blade configurations) and adjusting to various clearance angles. The universal design includes adjustable components that allow a single chuck to replace multiple specialized fixtures, achieving versatility without proportionally increasing complexity.
2Manufacturing precision
If a fixed angle grinding machine is used, then the machine structure is simple, but it cannot effectively grind the clearance angles and recesses of multiple blades
Solution Approach 1:
The machine incorporates an adjustable tilting mechanism for the chuck that allows dynamic adjustment of the workpiece angle relative to the emery wheel. This enables precise control over the clearance angles being ground, allowing the machine to effectively finish various blade configurations while maintaining operational simplicity through a unified adjustment system.
Solution Approach 2:
The machine allows change of the critical parameter - the angle between the cutter blade and the emery wheel - by tilting the chuck to different positions. This parameter adjustment capability enables the same machine structure to achieve different grinding angles for various blade configurations, improving manufacturing precision without requiring multiple fixed-angle machines.
3Productivity
If a single-purpose grinding machine is used, then the machine is simple to operate, but it requires multiple machines for different blade configurations
Solution Approach 1:
The grinding machine is designed as a universal system that can process two-blade, three-blade, and four-blade hobbing cutters using a single machine. The adjustable chuck allows operators to configure the machine for different blade types, eliminating the need for multiple dedicated machines and improving productivity while maintaining reasonable operational simplicity through standardized adjustment procedures.
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 adjustable chuck system allows for efficient grinding and finishing of hobbing cutters with two, three, or four blades by adjusting the T-bushing and stop pins, ensuring complete shaving of blade edges and clearance angles, improving the overall finishing quality.
Implementation Method 1
an emery wheel and guiding members... shave and grind the drill bit or cutter blade
Data Source
AI summary
The emery wheel grinding machine with adjustable drill bit chuck disclosed herein has an adjustable chuck in which is provided with a T-bushing having an outer flange formed at one end thereof. The outer flange is provided with several pairs of stop traps along its circumference, whereas the number of stop traps are determined according to the number of cutter blades to be shaved. Several stop pins are formed on the surface of the outer flange to control the turning angle of the drill bit or the cutter. The T-bushing further has a taper hole in it. When the chuck head which holds the drill bit or the cutter is inserted into the taper hole, the cutter blade can be in contact with the emery wheel with a certain tilted angle thereby allowing the cutter blades of various length and number to be effectively shaved, ground and finished.