Clamping Device Purging System for Residue Removal
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Solution Overview
Problem
Existing clamping devices in machine tools face challenges in effectively preventing and removing processing residues such as chips and dust from accumulating on functionally critical points, particularly due to the mobility of clamping jaws and inadequate coolant distribution systems.
Innovation Solution
The clamping device incorporates a spindle attachment opening for a rinsing supply line with a distribution cavity that deflects the jet direction, allowing for targeted and effective flushing of critical areas using a pressurized flushing fluid, and includes drainage cavities to enhance residue removal, with the option for a plastic nozzle head and fixed rinsing supply line for efficient cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional coolant supply system is used, then the system is simple in structure, but it cannot effectively flush processing residues from functionally critical points due to inadequate jet direction control
Solution Approach 1:
The distribution cavity is equipped with deflection formations at specific locations to redirect the flushing fluid jet toward functionally critical points such as spindles, bearings, and clamping jaws. This localized modification ensures that flushing effectiveness is enhanced precisely where needed without requiring a complete redesign of the entire distribution system.
Solution Approach 2:
The distribution cavity is divided into multiple regions with different deflection formations, allowing the flushing fluid to be directed toward various critical points simultaneously. This segmentation enables targeted cleaning of multiple areas including the spindle attachment opening, bearings, and clamping mechanisms through a single flushing supply line.
2Adaptability or versatility
If the clamping jaws are made movable to accommodate workpieces, then the device is versatile in application, but processing residues can ingress onto critical parts due to mobility
Solution Approach 1:
The flushing system is designed to clean processing residues from movable clamping jaws and critical parts before they can cause harmful effects. The deflection formations in the distribution cavity ensure that flushing fluid is directed onto these surfaces in advance, preventing residue accumulation that would occur due to the mobility and exposure of these components during workpiece handling.
Solution Approach 2:
The movable clamping jaws and critical components are equipped with integrated flushing pathways through the deflection formations, allowing them to be cleaned automatically during normal operation. The flushing fluid is directed onto these surfaces as part of the regular coolant supply, enabling self-cleaning without requiring separate cleaning mechanisms.
3Reliability
If high-pressure flushing is applied, then cleaning effectiveness is improved, but the existing supply line design is inadequate for high fluid pressures
Solution Approach 1:
The spindle attachment opening is redesigned to accept and seal with hollow spindles capable of withstanding high fluid pressures in the range of 30-70 bar or more. This parameter change in the pressure capacity of the supply system enables the use of high-pressure flushing fluid while maintaining structural integrity and reliable sealing at the tool holder interface.
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
This solution enables thorough and rapid cleaning of clamping devices, preventing residue accumulation and maintaining functionality, even with high-pressure flushing, suitable for various clamping device designs and ensuring reliable operation in machine tools.
Implementation Method 1
a distribution cavity (18) connected to the spindle attachment opening (17) and deflecting the direction of the jet
Implementation Method 2
introducing the coolant/cleaning liquid under pressure into the flushing supply line (15)
Data Source
Figure 1~2
Figure 3~4
AI summary
The device (1a) has two clamping jaws (3a) arranged on a housing (2a), and moved relative to each other in clamping direction (S). A purging unit has a purge fluid supply line for a purge fluid that flows into the housing between the two clamping jaws. Purge fluid supply takes place at the housing through a spindle support opening. A vertical cavity (18) is connected with the opening via the supply line, and is deflected in beam direction. A drive spindle drives the clamping jaws, and the purge fluid supply line is provided longitudinal or transverse to clamping direction.