Press Apparatus Chip Discharge Control
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Solution Overview
Problem
Conventional press apparatuses with chip discharge devices face challenges in maintaining a consistent pressing force and efficiently removing chips from the support surface, which can lead to excessive force on the actuator and imprecise press work due to chip accumulation.
Innovation Solution
A press apparatus with a frame, a vertically movable press shaft, a chip discharge mechanism that rotates the lower die support around a horizontal axis, a force detection unit to ensure a pressing force equal to or greater than a predetermined threshold, and a fluid emission unit to remove chips from the support surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the lower die support is pressed against the support surface to maintain pressing force, then press work precision is improved, but the actuator experiences excessive force when chips accumulate
Solution Approach 1:
The chip discharge mechanism is activated before the press shaft descends to perform press work. This preliminary action removes chips from the support surface in advance, preventing chip accumulation that would otherwise cause excessive force on the actuator and imprecise press work. The control unit coordinates the chip discharge operation to occur prior to the pressing operation.
2Productivity
If the chip discharge mechanism rotates the lower die support to remove chips, then chip removal efficiency is improved, but the pressing force becomes inconsistent
Solution Approach 1:
The force detection unit continuously monitors the pressing force between the lower die support and the support surface. The control unit receives this feedback information and adjusts the chip discharge mechanism's operation to maintain consistent pressing force. When the detected pressing force deviates from the target value, the control unit modifies the rotation timing or intensity of the chip discharge mechanism to restore the desired pressing force level.
Data Source
AI summary
A press apparatus including: a frame including a support surface, the support surface allowing a lower die support for supporting a lower die to rest on the support surface in close contact therewith; a press shaft configured to support an upper die facing the lower die from vertically above the lower die and to vertically move the upper die relative to the frame in a state where the lower die support rests on the support surface; a chip discharge mechanism configured to rotate the lower die support around a horizontal axis; a force detection unit configured to detect a pressing force of the lower die support against the support surface; and a control unit configured to control the chip discharge mechanism so that the pressing force detected by the force detection unit is equal to or larger than a predetermined threshold.