Adjustable Vise Jaw Rotation Control for Angled Workpiece Clamping
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Solution Overview
Problem
Conventional vises struggle with effectively clamping workpieces of varying lengths and angles due to the second jaw's tendency to rotate incorrectly, especially when the workpiece is shorter than the clamping surface, leading to improper clamping and potential damage during cutting processes.
Innovation Solution
An angularly adjustable vise with a movable shaft and a restricting device that allows the second jaw to be freely rotatable or restricted to a specific angle, using a bolt and elastic member to control the rotation, ensuring proper clamping by allowing the second jaw to adjust to the workpiece's angle or be fixed at a desired orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the second jaw is configured to be freely rotatable relative to the threaded rod, then the jaw can automatically adjust to the workpiece angle and achieve firm clamping, but the jaw may rotate in the wrong direction when contacting a corner of a short workpiece, causing improper clamping or damage
Solution Approach 1:
The patent implements a dynamic system where the second jaw can rotate relative to the threaded rod through a shaft with a restricting recess. The rotation is controlled by a restricting member that can be positioned in different states: when the restricting member engages with the restricting recess, the jaw rotation is limited to a specific angular range; when disengaged, the jaw can rotate freely to adapt to different workpiece angles. This dynamic control mechanism resolves the contradiction by allowing adaptability when needed while preventing wrong-direction rotation through the restricting recess geometry.
Solution Approach 2:
The patent changes the rotational parameter of the second jaw from completely free rotation to controlled rotation within a specific angular range. The restricting recess in the shaft defines the allowable rotation angle, and the restricting member positioned within the installation recess controls the jaw's rotational movement. This parameter change ensures the jaw can adapt to different workpiece angles while maintaining reliable clamping direction by limiting the rotation to a safe angular range.
2Reliability
If the second jaw is restricted to a specific angle, then the jaw can prevent wrong-direction rotation and ensure safe clamping, but the jaw cannot automatically adapt to different workpiece angles and lengths
Solution Approach 1:
The patent creates a dynamically adjustable system where the user can switch between restricted and free rotation modes based on the workpiece characteristics. The restricting member can be manually positioned to engage or disengage from the restricting recess, allowing the system to transition between a reliable fixed-angle mode for short workpieces and an adaptable free-rotation mode for longer workpieces. This dynamic configurability resolves the contradiction by allowing the user to select the appropriate mode for each specific application.
Solution Approach 2:
The patent designs the second jaw system to perform multiple functions: it can operate in a restricted rotation mode for reliable clamping of short workpieces, and in a free rotation mode for adaptable clamping of longer workpieces with various angles. The shaft with restricting recess and the movable restricting member enable this multi-functionality, making the vise universally applicable to different workpiece types and lengths without requiring separate tools or fixtures.
3Reliability
If a restricting device is added to control jaw rotation, then the jaw can be prevented from rotating in the wrong direction, but the device complexity increases
Solution Approach 1:
The patent segments the rotation control function into distinct components: the shaft with the restricting recess provides the geometric constraint, while the restricting member positioned in the installation recess provides the active control element. This segmentation allows each component to perform its specific function simply, with the restricting recess defining the angular limits and the restricting member enabling or disabling the rotation control. The segmented design achieves reliable rotation control without requiring a complex integrated mechanism.
Solution Approach 2:
The restricting member acts as an intermediary between the user's manual control and the second jaw's rotation. By positioning the restricting member within the installation recess of the second jaw and allowing it to engage with the restricting recess in the shaft, the system provides a simple mechanical intermediary that translates user intent into controlled jaw rotation. This intermediary approach achieves reliable rotation control through a simple mechanical interaction rather than a complex control system.
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 vise achieves stable clamping by allowing the second jaw to freely rotate or be restricted, ensuring secure fixation of workpieces regardless of their length and angle, preventing damage and improving cutting processes.
Implementation Method 1
The elastic member is disposed between the shaft and the restricting member in a way that the restricting member is pushed toward the head portion of the bolt by the elastic member
Data Source
AI summary
An angularly adjustable vise includes a base, a first jaw disposed on the base, a moving device including a linearly moving member disposed on the base and a shaft movable along with the linearly moving member, a second jaw sleeved onto the shaft rotatably relative to the shaft, and a restricting device including a restricting member disposed on the second jaw changeably between a restricting position and a release position. When the restricting member is at the restricting position, a part thereof is connected with the moving device so that the rotation of the restricting member and the second jaw is restricted by the moving device. When the restricting member is at the release position, the part thereof is separated from the moving device. Therefore, the second jaw is able to be set rotatable freely or rotationally restricted, achieving great clamping effect under different usage conditions.