Clamping Mechanism for Die Set Alignment

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Solution Overview

Problem

Conventional mechanical processing systems face issues with die tools shifting or skewing during automatic punching, leading to potential damage and insufficient production due to improper fixing of dies on machines.

Innovation Solution

A clamping mechanism is designed to securely attach a locating shaft of a die set to a machine carrier, using a cage base with guide portions and movable pushing blocks to ensure accurate alignment and prevent shifting or skewing, thereby preventing die tool impacts and production defects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If automatic die replacement is used to save time, then productivity is improved, but manufacturing precision deteriorates due to shift or skew errors in die positioning

Engineering Contradiction:
Improvedie replacement speedVSAvoiddie positioning accuracy
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The locating shaft is pre-equipped with pushed portions at specific positions before mounting on the machine. These pushed portions are designed in advance to engage with the pushing blocks, ensuring that when the die is automatically replaced, the positioning action has already been prepared, thus achieving both fast replacement and high positioning accuracy without requiring complex real-time adjustment mechanisms

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The pushing blocks act as intermediary elements between the locating shaft and the die set. These intermediaries transfer and control the positioning force, ensuring that the die is accurately positioned during automatic replacement. The pushing blocks mediate the interaction between the replacement mechanism and the die, preventing direct contact that could cause positioning errors while maintaining high replacement speed

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If simple mounting is used to ease operation, then ease of operation is improved, but reliability deteriorates due to die shift or skew during processing

Engineering Contradiction:
Improvedie mounting simplicityVSAvoiddie fixation stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The locating shaft structure includes pushed portions that automatically engage with the pushing blocks when the die is mounted. This self-service mechanism eliminates the need for complex manual adjustment or additional positioning devices. The die set itself provides the positioning features through its locating shaft, making the mounting process simple while ensuring reliable fixation during processing through the automatic engagement of the pushing blocks with the pushed portions

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS10773294B2Clamping mechanism
Publication Date: 2020.09.15 METAL INDS RES & DEV CENT
  • US10773294B2 patent drawing
  • US10773294B2 patent drawing
  • US10773294B2 patent drawing

AI summary

A clamping mechanism is provided to clamp a die set on a carrier of a machine. The clamping mechanism utilizes a first pushing block to push a locating shaft of the die set to allow a top surface of the locating shaft to contact a mounting surface of the carrier and utilizes a second pushing block to push the locating shaft to allow a first contacting surface of the locating shaft to contact a reference surface of a cage base such that the die set will not clamp on the carrier of the machine with shift or skew errors.