Adjustable Diaphragm Chuck for Multi-Pitch Gear Clamping
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Solution Overview
Problem
Diaphragm chucks are limited in their ability to clamp gears of different sizes and tooth pitches due to a small radial stroke, requiring multiple clamping and base jaw arrangements, which is inefficient and impractical for machining gears with varying geometries.
Innovation Solution
The solution involves centering grooves and adjustable clamping jaws with keys that allow alignment and radial distance adjustment between clamping jaws and the gear, enabling the diaphragm chuck to accommodate gears with different pitches and sizes without needing to exchange jaw units, and adjustable clamping pins to fit between tooth flanks for secure clamping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If diaphragm chucks use fixed clamping and base jaw arrangements with small radial stroke, then the structure remains simple and reliable, but the chuck cannot accommodate gears of different sizes and tooth pitches
Solution Approach 1:
The clamping jaw is made adjustable along the base jaw with a sliding mechanism, allowing the clamping position to be dynamically changed to accommodate different gear sizes and tooth pitches. The clamping jaw can be positioned at different locations on the base jaw and fixed using positioning elements, transforming a static structure into a dynamic one that adapts to various workpiece geometries.
Solution Approach 2:
A single clamping jaw/base jaw assembly is designed to perform multiple functions by accommodating different gear configurations. Through the adjustable positioning mechanism, the same assembly can clamp gears of various sizes and tooth pitches, replacing the need for multiple dedicated jaw arrangements for different gear types.
2Manufacturing precision
If multiple clamping jaw/base jaw units are used for different gear geometries, then each gear type can be clamped accurately, but the device complexity and number of required components increases significantly
Solution Approach 1:
The base jaw is designed with multiple positioning elements and adjustment mechanisms that allow a single clamping jaw assembly to accurately clamp different gear geometries. The universal design maintains manufacturing precision for various gear types while reducing the total number of jaw units from multiple dedicated assemblies to one multi-functional assembly.
Solution Approach 2:
The clamping jaw and base jaw are divided into separable components with independent adjustment capabilities. The clamping jaw can be positioned at different locations on the base jaw using discrete positioning elements, allowing precise adjustment for different gear configurations without requiring completely different jaw assemblies.
3Adaptability or versatility
If the radial stroke of the diaphragm is increased to accommodate different gear sizes, then versatility improves, but the structural integrity and clamping force may be compromised
Solution Approach 1:
Instead of increasing the radial stroke of the diaphragm, the invention uses a dynamic positioning system where the clamping jaw can be adjusted along the base jaw. This maintains the original diaphragm stroke and structural integrity while achieving versatility through positional adjustment rather than mechanical amplification.
Solution Approach 2:
The solution moves from changing the radial dimension (stroke length) to changing the axial/longitudinal position of the clamping jaw on the base jaw. This dimensional shift allows accommodation of different gear sizes without compromising the radial stroke and associated structural integrity or clamping force.
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
This configuration allows for reliable clamping of gears with various geometries using the same clamping and base jaw assembly, improving versatility and reducing the need for multiple jaw units, ensuring accurate alignment and secure clamping force across different gear dimensions.
Implementation Method 1
A diaphragm attached to an operating element is tilted outwards in an area where it is attached to the chuck body, as a result of which a swivelling movement of a base jaw attached to a machine occurs in a radially outward direction
Data Source
AI summary
A diaphragm chuck with an operating element inserted in a chuck body and axially movable in relation to the chuck body, a diaphragm attached to a free end of the operating element with the diaphragm secured to the chuck body by its outer circumference, three base jaws in driving connection with the diaphragm, on each of which a centering surface is disposed in a concentric alignment with the axis of the operating element, three clamping jaws attached to the corresponding base jaws, by which a gear to be machined can be clamped and which make contact with the centering surface, and clamping pins, each allocated to one of the clamping jaws, radially aligned and arranged between two teeth of the gear in the clamped condition, such that the diaphragm chucks reliably clamps differently sized gears and gears with different numbers of teeth between the three clamping jaws.