Hydraulic Expansion Chucking Device Soldered Insert
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Solution Overview
Problem
Existing hydraulic expansion clamping devices face inefficiencies due to the need for a movable sealing plug that requires significant space and complicates the clamping mechanism, particularly in integrating a fluid-tight connection between the insert element and the base body.
Innovation Solution
The insert element is fixed in the base body via high-temperature soldering, allowing for a permanent and fluid-tight connection, and a sealing ring is inserted after soldering to prevent damage from high temperatures, with the guide section and piston designed for a sliding fit to eliminate relative movement, and a rolling body piston used for simplicity and space efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a movable sealing plug is used to seal the cylinder chamber, then fluid-tight connection is achieved, but the clamping mechanism becomes complex and space-consuming
Solution Approach 1:
The sealing function is extracted from the movable piston assembly and transferred to a stationary sealing ring in the cylinder chamber. The sealing ring is fixed in a groove and remains stationary while the piston moves, eliminating the need for a movable sealing plug and reducing mechanism complexity.
Solution Approach 2:
The sealing system is segmented into a stationary sealing ring and a movable piston, separating the sealing function from the actuating function. This allows the sealing ring to remain fixed in the cylinder chamber while the piston moves independently to actuate the clamping mechanism.
2Reliability
If a movable sealing plug is used to seal the cylinder chamber, then fluid-tight connection is achieved, but space requirements increase
Solution Approach 1:
The sealing function is extracted from the movable piston assembly and transferred to a stationary sealing ring in the cylinder chamber. The sealing ring is fixed in a groove and remains stationary while the piston moves, eliminating the need for a movable sealing plug and reducing mechanism complexity.
3Strength
If high-temperature soldering is used to fix the insert element, then permanent and fluid-tight connection is achieved, but the sealing ring may be damaged by high temperatures
Solution Approach 1:
The sealing ring is pre-installed in its groove in the cylinder chamber before the high-temperature soldering process. This preliminary positioning ensures the sealing ring is already in place and protected by the cylinder chamber structure during soldering, preventing thermal damage while maintaining the fluid-tight connection.
Solution Approach 2:
The cylinder chamber acts as an intermediary structure that protects the sealing ring from direct exposure to high temperatures during soldering. The sealing ring is positioned within the cylinder chamber, which shields it from thermal damage while allowing the insert element to be soldered to the base body.
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 simplifies the clamping mechanism, reduces space requirements, and ensures a reliable, space-saving fluid-tight connection, enhancing the overall operational efficiency of the hydraulic expansion clamping device.
Implementation Method 1
the insert element is fastened in the base body by high-temperature soldering
Implementation Method 2
a sealing ring is inserted, which seals the gap formed between the piston and the base body
Implementation Method 3
the piston is pushed inwards with the result that the hydraulic medium... is displaced in the direction of the pressure chamber
Implementation Method 4
the hydraulic medium with which the pressure chamber, the hydraulic medium supply line and the cylinder chamber are filled, is displaced
Implementation Method 5
the expansion sleeve is inserted into the base body and is deformed radially inward to clamp a shaft or shaft-like component
Data Source
Figure 1~3
AI summary
The device has an insert unit (13) held in a cylindrical chamber (9), where a clamping screw (10) is screwed into the insert unit. A circular groove (15) is formed between a front surface of the insert unit and a base plate, where the front surface points to the base plate. A sealing ring (12) is inserted into the circular groove, where the sealing ring seals an annular gap formed between a plunger (11) and the base plate. The insert unit exhibits a circular groove (16) at its outer periphery, where a soldering material is accommodated in the circular groove (16).