Clamping Chuck Bolt Axial Tool Fixation
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Solution Overview
Problem
Existing chucks require additional work steps for axial tool fixation, such as inserting a pin or actuating a screw, which complicates the process during high feed rates in milling processes.
Innovation Solution
A chuck with a bolt mounted in a recess of the sleeve that can be moved at an acute angle, held by a spring bar, allowing easy tool insertion and subsequent axial fixation within the sleeve without additional handling steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pin or screw is used for axial fixation of the tool within the sleeve, then the tool is securely fixed axially, but additional work steps are required for insertion or actuation
Solution Approach 1:
The bolt is pre-mounted in the sleeve wall in a retracted position before tool insertion. The tool itself, when inserted, performs the action of pushing the bolt into the engagement position, eliminating the need for separate fixation operations.
Solution Approach 2:
The tool insertion process automatically actuates the bolt mechanism. The tool's own insertion motion serves to engage the bolt with the tool flange, making the system self-securing without external intervention.
2Reliability
If a pin or screw is used for axial fixation, then the tool is securely fixed, but the process time increases due to additional work steps
Solution Approach 1:
The bolt is pre-positioned in the sleeve wall ready for engagement. The tool insertion motion automatically triggers the bolt to move into the engagement position, combining tool loading and axial fixation into a single continuous motion without pauses or additional steps.
Solution Approach 2:
The tool insertion process continues uninterrupted as the bolt is automatically actuated during insertion. The fixation action occurs continuously during the insertion motion rather than as a separate discrete step, maintaining continuous productive action.
3Reliability
If the bolt length is greater than the sleeve wall thickness, then the bolt can engage the tool effectively, but the bolt must be movable during insertion
Solution Approach 1:
The bolt is designed with dynamic positioning capability, moving from a retracted position during tool insertion to an extended engagement position during tool fixation. This dynamic behavior allows the same bolt structure to serve both insertion and fixation phases effectively.
Solution Approach 2:
The spring bar acts as an intermediary mechanism between the bolt and the sleeve wall. It provides the necessary movement and restoring force, allowing the bolt to extend during fixation and return to its retracted position, simplifying the overall mounting structure.
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 simple and reliable axial tool fixation without the need for additional work steps, ensuring precise positioning and secure tool retention during machining operations.
Implementation Method 1
The spring bar (67) is designed as a resilient holding arm (67), in particular as a spring bar, wherein the bolt (51) can be resiliently displaced
Data Source
AI summary
The invention relates to a clamping chuck (1) comprising: a coupling section (3); a receiving section (9) having a recess (11); a sleeve (19) which can be inserted into the recess (11) of the receiving section (9) and has a wall (33), which sleeve is used to receive a tool (5); and a securing device (49) for axially fixing a tool (5) inside the sleeve (19). The clamping chuck (1) is characterised in that the securing device (49) has a bolt (51), which is spring-mounted in a recess (69) in the wall (33) of the sleeve (19) and can be moved substantially in the vertical direction with respect to the longitudinal extension of the sleeve (19), and in that the length of the bolt (51) measured perpendicularly with respect to the longitudinal extension of the sleeve (19) is greater than the thickness of the wall (33).