Draw Stud Connector Wedge Mechanism for Punch Driver
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Solution Overview
Problem
The assembly and disassembly of knockout punch assemblies, which require fine threads to withstand high loads, are tedious and time-consuming due to the need to repeatedly attach and detach the punch or die from the driver.
Innovation Solution
A draw stud connector with a movable wedge mechanism that allows axial insertion but prevents axial removal of the draw stud, using a combination of cylindrical portions and rotational alignment to secure the draw stud in place, facilitating easier assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fine threads are used to withstand high loads during operation, then the strength and reliability of the connection is improved, but the ease of operation deteriorates due to the tedious and time-consuming assembly and disassembly process
Solution Approach 1:
The draw stud is segmented into two functional parts: a threaded portion that remains permanently attached to the driver, and a smooth cylindrical portion that can be easily inserted and removed from the punch assembly. This segmentation allows the threaded connection to maintain strength while eliminating the need for repeated threading operations.
Solution Approach 2:
The threading function is extracted from the draw stud itself and transferred to a separate threaded portion that remains on the driver. The punch assembly only needs to accommodate the smooth cylindrical portion, simplifying its structure and enabling rapid insertion and removal without threading operations.
2Productivity
If the punch or die is repeatedly attached and detached from the driver, then the productivity is improved by enabling multiple holes to be punched, but the loss of time increases due to the tedious assembly and disassembly process
Solution Approach 1:
The draw stud is divided into a permanent threaded portion on the driver and a removable smooth cylindrical portion in the punch. This allows the punch to be quickly attached and detached by simply inserting or removing the smooth portion, dramatically reducing the time required for repetitive operations while maintaining connection strength through the permanent threaded attachment.
3Reliability
If the draw stud is securely attached to the driver using fine threads, then the reliability of the connection is improved, but the device complexity increases due to the need for threading mechanisms
Solution Approach 1:
The threading mechanism is extracted from the removable draw stud and permanently installed on the driver. This eliminates the need for threading mechanisms in the punch assembly, reducing its complexity while maintaining reliable connections through the permanent threaded portion on the driver.
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 solution simplifies the assembly and disassembly process by allowing secure attachment and detachment of the draw stud without the need for repeated threading, reducing the tediousness and time required for repetitive operations.
Implementation Method 1
a wedge at least partially positioned within the cavity and moveable with respect to the body both axially and radially. The wedge allows the first end of the draw stud to move axially into the cavity but does not permit axial removal of the first end of the draw stud from the cavity
Data Source
AI summary
A draw stud connector, for use on a punch driver, includes a draw stud having a first end. The draw stud connector also includes a body defining an axis therethrough, the body forming a cavity having an open end, and a wedge at least partially positioned within the cavity and moveable with respect to the body both axially and radially. The wedge allows the first end of the draw stud to move axially into the cavity but does not permit axial removal of the first end of the draw stud from the cavity.