Punch-Die Alignment Control for Precise Clearance Adjustment
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Solution Overview
Problem
Current methods for adjusting the positional relationship between a punch and a die in punching press work lack precision, often requiring skilled labor and can result in eccentric clearances due to vibration-induced nut loosening, leading to uneven tool wear and reduced tool life.
Innovation Solution
An adjustment device with a first drive mechanism that moves the punch or die in four orthogonal directions, controlled by a communicable controller, to bring the punch and die into contact and align their centers, ensuring accurate positioning without the need for highly skilled workers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual adjustment methods (hammer or cutting) are used to adjust tool position, then adjustment can be performed, but highly-skilled workers are required and adjustment precision is low
Solution Approach 1:
The patent replaces manual mechanical adjustment methods (hammering or cutting the die) with an automated drive mechanism that moves the punch or die along the punching direction. This automated system uses a drive mechanism controlled by a controller to precisely position the tool, eliminating the need for highly-skilled manual operations while achieving high adjustment precision.
2Reliability
If nut-based tool fixing method is used, then tool can be fastened, but nut loosens due to vibrations causing tool position variation
Solution Approach 1:
The patent extracts the punch from the traditional nut-based fixing system and implements a drive mechanism that directly positions and holds the punch. By removing the nut-based fastening system, the patent eliminates the problem of nut loosening due to vibrations while maintaining tool position stability through the drive mechanism's controlled positioning capability.
3Measurement precision
If quantitative measurement of positional relationship is not implemented, then adjustment process is simple, but it is impossible to determine center coincidence between punch and die
Solution Approach 1:
The patent implements a feedback mechanism where a controller receives information about the positional relationship between the punch and die, processes this information, and automatically adjusts the punch or die position accordingly. The controller determines when the centers coincide by analyzing position data and provides feedback control to achieve precise center alignment without requiring complex manual measurement systems.
Data Source
AI summary
An adjustment device of a punching device punches a workpiece on a die so that the workpiece is punched into a predetermined shape. The adjustment device includes a first drive mechanism that moves the punch or the die in a direction orthogonal to a punching direction, and a controller connected to the first drive mechanism. The controller brings the punch and the die into contact with each other by moving the punch or the die in four orthogonal directions in a plane perpendicular to the punching direction from an initial position where the punch is inserted into the punching die. The controller causes the first drive mechanism to move the punch or the die to a center position where a central axis of the punch and a central axis of the die are aligned with other.