Floating Jaw Assembly for Machinist Vise Workholding
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Solution Overview
Problem
Conventional machining vises can only hold a limited number of workpieces due to limitations in intermediary jaws that do not shift or articulate in a plane parallel to the base, fail to securely clamp unequal or uneven workpieces, and lack vibration damping.
Innovation Solution
A floating jaw assembly that allows each jaw to move longitudinally, articulate about a perpendicular axis, and shift sideways, with a force-down mechanism to securely clamp workpieces and provide vibration damping, enabling the vise to hold up to two additional workpieces per jaw.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If intermediary jaws are added to expand workpiece capacity, then the number of workpieces that can be held increases, but the ability to securely clamp unequal or uneven workpieces deteriorates because known intermediary jaws cannot shift or articulate
Solution Approach 1:
The patent applies the dynamics principle by making the intermediary jaws movable rather than fixed. Each floating jaw is mounted on a pivot pin that allows it to rotate and articulate, enabling the jaw to adapt its angle and position to securely clamp workpieces of varying sizes, shapes, and orientations. This dynamic capability resolves the contradiction by allowing the same jaw structure to handle both increased quantity and improved adaptability.
Solution Approach 2:
The patent divides the vise jaw system into multiple independent floating jaws that can move and articulate independently. Instead of a single rigid jaw structure, the system segments the jaw into multiple units (first floating jaw, second floating jaw, etc.), each capable of independent motion. This segmentation allows each jaw to adapt to different workpiece configurations while collectively holding multiple workpieces, resolving the contradiction between quantity and adaptability.
2Manufacturing precision
If fixed jaw structure is used to maintain stability, then positioning precision is maintained, but the ability to hold multiple workpieces deteriorates due to limited jaw movement capability
Solution Approach 1:
The patent introduces dynamic floating jaws that can move and articulate while maintaining precise positioning through controlled motion. The floating jaws are constrained by pivot pins and guide surfaces that allow only specific movements, ensuring that positioning precision is maintained even as the jaws adapt to hold multiple workpieces. This resolves the contradiction by combining dynamic adaptability with precision control.
Solution Approach 2:
The patent uses the floating jaw assembly as an intermediary element between the fixed jaw structure and the workpieces. The floating jaws act as mediators that translate the stable support of the fixed jaw into adaptable workholding capability, allowing multiple workpieces to be held with precision by distributing them across multiple articulating jaw surfaces rather than requiring the fixed jaw itself to move.
3Device complexity
If conventional movable jaw mechanism is used, then simple structure is maintained, but the number of workpieces that can be held deteriorates to maximum of four per vise
Solution Approach 1:
The patent segments the jaw system into multiple floating jaws that can be added to the conventional vise structure. Instead of redesigning the entire vise mechanism, the solution divides the workholding function into multiple independent floating jaw units that can be incrementally added. Each unit maintains relatively simple construction while collectively enabling the vise to hold many more than four workpieces, resolving the contradiction between structural simplicity and increased capacity.
Solution Approach 2:
The floating jaw assembly serves multiple functions: it increases workpiece capacity, provides adaptability for various workpiece configurations, and maintains compatibility with conventional vise structures. The same floating jaw mechanism can hold different numbers and types of workpieces depending on the configuration, making the system universally applicable while significantly expanding capacity beyond the traditional four-workpiece limit.
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 floating jaw assembly enhances the vise's ability to securely hold and machine multiple workpieces of varying sizes and shapes, maintaining precise tolerances and reducing vibration during machining operations.
Implementation Method 1
The mounting pin 10 allows the floating jaw 12 to move freely in various directions
Implementation Method 2
provide desired vibration damping as each floating jaw rests securely on the way of the vise
Data Source
AI summary
An improved floating jaw assembly to a machinist vise assembly capable of holding a plurality of individual workpieces, the vise assembly generally including a base with a way or ways, a fixed jaw mounted on the ways, at least one movable jaw slidably mounted on the ways to move toward and away from the fixed jaw on a longitudinal axis in such a manner that at least one workpiece can be securely held between the fixed jaw and the at least one movable jaw, and a mechanism for moving the movable jaw toward and away from the fixed jaw to clamp and unclamp workpieces. The floating jaw assembly includes at least one floating jaw plate attached to the vise assembly by means of mounting pins and openings in the floating jaw plates for adjustable movement of the floating jaw plates along the longitudinal axis of the vise assembly and for articulated movement of the floating jaw plates in a plane substantially parallel to the base of the vise assembly and about an axis perpendicular to the longitudinal axis of the vise assembly so that the floating jaw plates can, in cooperation with adjoining jaws or plates, adjust to and securely hold workpieces. In addition, the floating jaw assembly includes a means of forcing the at least one floating jaw plate downward and securely against the ways of the vise assembly as the at least one movable jaw moves toward the fixed jaw, along with the intermediary at least one floating jaw plate, when clamping a workpiece. The floating jaw plates can be bisected longitudinally so that each bisected jaw plate can move independently of the bisected jaw plate and allow for even greater adjustable and articulated movement of each bisected floating jaw plate. The floating jaw assembly can be added as an accessory to a conventional vise assembly.


