Helical Clamping Sleeve for High-Temperature Component Heating
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Solution Overview
Problem
Existing electric component heaters are difficult to mount and dismount, require significant space, and do not adequately compensate for component diameter tolerances while maintaining a high clamping force under high temperatures.
Innovation Solution
A clamping sleeve with a helical slot allows for easy assembly and disassembly by applying torque, using a rotary tool to expand or compress the sleeve, ensuring secure clamping on cylindrical components or within bores, with adjustable clamping force and heat distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional clamping sleeve is used to secure the heating element, then the heating element is firmly clamped onto the component, but the assembly becomes difficult to mount and dismount
Solution Approach 1:
The clamping sleeve is designed with a helical slot that allows it to dynamically change its diameter. When torque is applied, the slot enables the sleeve to expand radially, facilitating easy mounting. When torque is released, the sleeve elastically returns to its original smaller diameter, creating firm clamping force. This dynamic transformation resolves the contradiction between easy mounting and reliable clamping.
Solution Approach 2:
The clamping sleeve's inner diameter is changed from a fixed value to a variable parameter that responds to applied torque. By applying torque, the diameter increases for mounting; when torque is released, the diameter decreases for secure clamping. This parameter change enables the same component to serve both mounting and secure attachment functions.
2Reliability
If the clamping sleeve is designed to provide high clamping force, then secure attachment is achieved, but the device requires significant space
Solution Approach 1:
The clamping sleeve transitions from a larger diameter state during mounting to a smaller diameter state during operation. This dynamic size change allows the device to require minimal space during normal operation while still providing secure clamping force, resolving the contradiction between clamping reliability and space efficiency.
3Reliability
If the clamping sleeve is made rigid to maintain consistent clamping force, then reliable attachment is achieved, but the sleeve cannot compensate for component diameter tolerances
Solution Approach 1:
The clamping sleeve's inner diameter is designed as a variable parameter that responds to torque application. This allows the sleeve to adapt its diameter to compensate for component tolerance variations while maintaining consistent clamping force. The elastic material and helical slot work together to provide both adaptability and force consistency.
Solution Approach 2:
The clamping sleeve is made from spring-elastic material that combines rigidity for force maintenance with flexibility for tolerance compensation. This composite material property allows the sleeve to both maintain consistent clamping force and adapt to varying component diameters, resolving the contradiction between reliability and adaptability.
4Ease of operation
If the clamping sleeve is designed to be easily mounted and dismounted, then ease of operation is improved, but the clamping force under high temperature cycling is reduced
Solution Approach 1:
The clamping sleeve's elastic properties are specifically selected to maintain effectiveness across a wide temperature range including high temperature cycling. The spring-elastic material and helical slot design work together to ensure that the sleeve maintains sufficient clamping force even under thermal stress while remaining easy to mount and dismount through torque application.
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
Facilitates easy and quick mounting and dismounting, adapts to component tolerances, and maintains high clamping force and uniform heat distribution up to 500°C, using spring-elastic materials like stainless steel.
Implementation Method 1
by applying a sufficiently high torque, which must be applied manually, an elastic expansion or compression of the clear inner diameter of the clamping sleeve can be effected along the helically circumferential slot
Implementation Method 2
After the torque is subsequently released, the clamping sleeve and the heating element elastically return to their original shape, reducing the inner diameter, and the clamping sleeve, along with the electrical heating element, clamps securely onto the component as desired
Implementation Method 3
the electric heating element is applied to the cylindrical outer surface of the component... the clamping sleeve is arranged so that it surrounds the electric heating element on the outside
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention comprises an electric component heater (1) for a cylindrical component, comprising an electric heating element (2) attachable to the cylindrical component and a tubular clamping sleeve (3) made of a spring-elastic material adjacent to the electric heating element, the clamping sleeve having a cylindrical outer and inner surface and a continuous slot (31) extending along its length, wherein the heating element (2) is connected to the clamping sleeve (3) at both axial ends and the slot (31) extends helically along the length of the clamping sleeve (3) and is formed at least at one end with a recess (32) for engaging a rotary tool (4), as well as a method for attaching such component heaters to a component to be heated.