Soil Roller Tool Clamping Structure for Clean Tool Changes
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Solution Overview
Problem
Existing roller tools for soil cultivation machines face challenges in reliably fixing and detaching interchangeable tools from their holders, especially after prolonged use, without causing contamination issues.
Innovation Solution
A roller tool design featuring a tool carrier with inclined clamping surfaces and a clamping element that generates a clamping interaction between the tool holder and carrier, using a wedge-like mechanism with threaded fastening for secure attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a tool holder is fixed to a carrier shell using welding or friction clamping, then the tool holder can be securely attached to the roller, but the tool holder becomes contaminated by external influences and contaminants during operation
Solution Approach 1:
The tool holder is segmented into a holder body and a protective holder cover. The cover encloses the holder body, creating a protected internal space that prevents contaminants from reaching the clamping surfaces and tool shank, while the segmented structure allows for separate attachment and protection functions
Solution Approach 2:
The holder cover acts as a sacrificial protective element that can be easily replaced if contaminated or damaged, protecting the more valuable tool holder and tool shank from contamination without requiring complex sealing mechanisms
2Ease of operation
If a tool holder is designed with simple insertion and locking mechanisms, then the tool can be easily attached and detached, but the tool holder becomes loose or unstable after longer periods of operation
Solution Approach 1:
Different regions of the tool holder are given different functional qualities: the holder body contains clamping surfaces with specific geometries for secure friction-based clamping, while the holder cover provides protective enclosure. The tool shank has corresponding localized features like clamping surfaces and insertion geometries that work with specific regions of the holder to maintain stable connection under load
Solution Approach 2:
Instead of using complex mechanical locking mechanisms that require precise alignment and multiple components, the design inverts the approach by using a friction-based clamping system where the clamping element presses the tool shank against clamping surfaces, creating a self-centering and self-stabilizing connection that maintains reliability without complex geometry
3Reliability
If a clamping mechanism uses multiple components and complex geometry to ensure secure fixation, then the tool holder can be reliably fixed to the carrier, but the device complexity increases and the attachment process becomes more difficult
Solution Approach 1:
The tool holder design merges multiple functions into fewer components: the holder body integrates the clamping surfaces and structural support, while the clamping element serves both as the attachment mechanism and the primary fixation component. The holder cover combines protection and structural functions, reducing the total number of components needed compared to traditional multi-component tool holders with separate locking mechanisms
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
Enables easy and reliable attachment and detachment of interchangeable tools, protecting the tool holder from external influences while maintaining a stable and secure connection.
Implementation Method 1
a tool holder with a tool holder opening elongated in the direction of an opening longitudinal axis for receiving the tool holder shank of the tool holder detachably fixed to the tool holder and with a tool holder counter-clamping area, wherein the tool holder counter-clamping area is to be brought into clamping interaction with the tool holder clamping area for detachably fixing the tool holder to the tool carrier
Implementation Method 2
A roller tool design featuring a tool carrier with inclined clamping surfaces and a clamping element that generates a clamping interaction between the tool holder and carrier, using a wedge-like mechanism with threaded fastening for secure attachment and detachment
Data Source
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AI summary
A roller tool for a soil cultivation roller of a soil cultivation machine comprising a tool carrier (16) to be fixed to an outer circumferential side of a carrier shell (26) with a connection area for fixed connection of the tool carrier (16) to an outer circumferential surface of the carrier shell (26) and a changeable holder clamping area, a changeable tool (24; 24') with a changeable tool shank (58) extending in the direction of a shank longitudinal axis, a changeable holder (18) with a changeable holder opening (52) extending in the direction of an opening longitudinal axis for receiving the changeable tool shank of the changeable tool (24; 24') to be detachably fixed to the changeable holder (18).24') and with a tool holder counter-clamping area, wherein the tool holder counter-clamping area is to be brought into clamping interaction with the tool holder clamping area for the releasable fixing of the tool holder (18) to the tool carrier (16), and a clamping element (28) to be supported for generating the clamping interaction with respect to the tool carrier (16) and the tool holder (18).;