Hydrostatic Rail Guide Gap Control

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Solution Overview

Problem

Existing hydrostatic rail guides face challenges in accurately determining the level of a guide carriage after tilting, leading to potential deviations and errors during processing, as they lack a mechanism to confirm the carriage's return to its original level without tilt.

Innovation Solution

A hydrostatic rail guide system comprising a guide rail, guide carriage, hydrostatic supply device, measurement device, and controller, where measurement units detect gaps and offset angles to adjust hydrostatic pressure, ensuring the guide carriage maintains a balanced level by controlling oil supply to maintain predetermined gap values.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If throttles and adjustable oil outlets are used to supply oil to the guide carriage, then the guide carriage can be kept at a gap from the guide rail through hydrostatic pressure adjustment, but the system cannot confirm when the guide carriage has returned to its original level after tilting

Engineering Contradiction:

Improvelevel confirmation accuracyVSAvoidlevel position information

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The patent introduces measurement units that detect the gap between the guide carriage and guide rail, providing feedback signals to a controller. The controller adjusts the hydrostatic pressure based on this feedback to maintain the predetermined gap, thereby confirming when the carriage has returned to its original level.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces the purely mechanical throttle-based hydrostatic pressure adjustment with an automated control system that uses measurement units and a controller to monitor and adjust the oil pressure, enabling precise level confirmation through electronic feedback rather than mechanical means alone.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If the guide carriage is allowed to tilt freely, then the system can adapt to load changes, but processing deviations and errors occur due to inability to confirm return to original level

Engineering Contradiction:

Improveload adaptation capabilityVSAvoidprocessing accuracy

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The measurement units continuously monitor the gap between the guide carriage and guide rail, providing real-time feedback to the controller. This enables the system to detect when the carriage has returned to its original level, ensuring processing accuracy while maintaining adaptability to load changes.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system dynamically adjusts the hydrostatic pressure parameter based on detected gap changes, allowing the guide carriage to adapt to varying loads while maintaining precise level control through controller-regulated oil pressure adjustments.

Inventive Principle:

Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system effectively maintains the guide carriage at a precise level, preventing processing errors by dynamically adjusting hydrostatic pressure based on measured gap and angle data, ensuring accurate positioning and operation.

Implementation Method 1

a hydrostatic channel (210a, 210b) filled with oil. The oil keeps the guide carriage (200) and the guide rail (100) at a gap. The hydrostatic supply device (240) is adapted for supplying the oil to the hydrostatic channel (210a, 210b)

Methodology Applied

Scientific EffectHydrostatic pressure: Pressure Increase

Implementation Method 2

The measurement device is installed on the guide carriage and adapted for detecting the gap between the guide carriage and the guide rail and for producing a distance signal of the measured gap

Methodology Applied

Scientific EffectDistance measurement:

Implementation Method 3

The controller is adapted for controlling the hydrostatic supply device, based on the distance signal, in order to adjust the hydrostatic pressure of the oil after the oil is pressurized

Methodology Applied

Scientific EffectHydrostatic pressure adjustment: Pressure Increase

Data Source

PatentUS8931956B2Hydrostatic rail guide

Publication Date: 2015.01.13 IND TECH RES INST

AI summary

A hydrostatic rail guide includes a guide rail, a guide carriage, a hydrostatic supply device, a measurement device and a controller. The guide carriage is hydrostatically mounted on the guide rail and has a hydrostatic channel filled with oil. The oil keeps the guide carriage and the guide rail at a gap. The hydrostatic supply device is adapted for supplying the oil to the hydrostatic channel and adjusting the pressure of the oil. The measurement device is installed on the guide carriage and adapted for detecting the gap between the guide carriage and the guide rail and for producing a distance signal of the measured gap. The controller is connected to the hydrostatic supply device and the measurement device. The controller is adapted for controlling the hydrostatic supply device, based on the distance signal, in order to adjust the hydrostatic pressure of the oil after being pressurized.