Upper Die Guide Structure to Prevent Pin-Groove Collision
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The collision between protrusions (pins) on the upper die and grooves during transportation in a press machine leads to abnormal noise and potential damage, destabilizing the attitude of the upper die.
Innovation Solution
The upper die is designed with protrusions that include an outer guided portion and an inner guided portion, where the distance between them is greater than the clearance between the die guide rail and connection rail, ensuring that either portion remains supported by a groove, preventing collision and stabilizing the die's attitude during transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the upper die is transported through the die guide rail and connection rail with pins guided by grooves, then the upper die can be moved between positions, but the pins may fall into clearances and collide with groove end portions causing abnormal noise and damage
Solution Approach 1:
The guidance structure is segmented into two distinct parts: an outer guided portion and an inner guided portion. This segmentation ensures that not all pins can simultaneously fall into clearances, as the inner guided portion provides additional support when outer pins are in clearance, preventing collision and stabilizing the upper die attitude during transportation
Solution Approach 2:
The inner guided portion acts as an intermediary support mechanism. When the outer guided portion falls into clearance during transportation, the inner guided portion provides intermediate support to prevent complete loss of guidance, thereby avoiding pin collision with groove ends and reducing abnormal noise
Data Source
AI summary
An upper die is movable through a die guide rail on a lower portion of a ram in a press machine and a connection rail connected to the die guide rail. The upper die includes, on right and left sides of a center portion as viewed in a front-rear direction, protrusions that protrude in the front-rear direction and move while being guided by grooves included in the die guide rail and the connection rail. The protrusions each include an outer guided portion on an outer side in a transportation direction relative to the center portion and an inner guided portion on an inner side closer to the center portion than the outer guided portion, and a distance in the transportation direction between the outer guided portion and the inner guided portion is greater than a clearance distance between the die guide rail and the connection rail.