Hydraulic Circuit Volume Compensation for Precise Piston Positioning

The invention introduces a variable volume chamber whose capacity changes based on working oil temperature. As temperature increases and oil volume expands, the variable volume chamber reduces its capacity to accommodate the expansion, preventing pressure buildup and maintaining accurate piston positioning. This dynamic parameter adjustment resolves the contradiction by allowing simple hose connection while preserving positional accuracy through temperature-compensated volume adjustment.

The variable volume chamber acts as an intermediary element between the drive-side and control cylinders. It mediates the effect of working oil volume changes by providing a compensating volume that dynamically adjusts to temperature variations, thereby protecting the positional accuracy of the control piston while maintaining the simplicity of direct hydraulic connection.

The invention transforms the static fluid path volume into a dynamic variable volume chamber that automatically adjusts its capacity in response to temperature changes. This dynamic adaptation allows the system to maintain positional accuracy across varying temperature conditions, as the chamber volume expands or contracts to compensate for working oil volume changes, thereby achieving both precision and temperature adaptability.

The variable volume chamber is designed to exploit thermal expansion principles, where the chamber's internal volume changes in response to temperature variations. This thermal-responsive behavior enables the system to automatically compensate for working oil expansion or contraction, maintaining constant positional accuracy while adapting to temperature changes without external control.

The invention replaces the fixed fluid path with a variable volume chamber that dynamically adjusts its capacity. This dynamic design maintains system stability by providing a compliant volume that absorbs working oil volume changes, while simultaneously preserving positional accuracy through temperature-compensated volume adjustment. The chamber's variable nature allows it to stabilize pressure while accommodating expansion or contraction.

The variable volume chamber changes its volume parameter in response to temperature variations, allowing the system to maintain both stability and positional accuracy. As temperature and working oil volume change, the chamber adjusts its capacity to maintain constant pressure conditions, thereby preventing positional drift while adapting to thermal conditions.