Lathe Chuck Fastening Device with Rotary Clamping Slides
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Solution Overview
Problem
The existing methods for changing a chuck on a lathe spindle are time-consuming and require significant effort, involving the loosening of fastening screws and unscrewing of the draw adapter from the draw tube.
Innovation Solution
A chuck and fastening device system that allows for simple and rapid attachment by actuating a rotary member to move the clamping slides, which can be switched between locking and release positions using a single adjusting screw, eliminating the need to unscrew the tension adapter from the tension tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the chuck is replaced by loosening fastening screws and unscrewing the draw adapter, then the chuck can be detached from the spindle, but the process becomes time-consuming and requires significant effort
Solution Approach 1:
The fastening system is segmented into independent functional components: the draw adapter remains permanently attached to the draw tube, while the chuck is secured separately through the fastening device with clamping slides. This segmentation allows the chuck to be released without disturbing the draw adapter connection, eliminating the time-consuming unscrewing operation.
Solution Approach 2:
The fastening device employs dynamically adjustable clamping slides that can be rapidly moved between clamped and released positions through the rotary member mechanism. This dynamic positioning system enables quick chuck attachment and detachment without manual manipulation of multiple fastening elements, dramatically reducing changeover time.
2Reliability
If multiple fastening screws and the draw adapter connection are used to secure the chuck, then secure attachment is achieved, but the complexity of the fastening system increases
Solution Approach 1:
The fastening device combines multiple fastening functions into a single integrated mechanism. The clamping slides simultaneously perform both the function of securing the chuck to the spindle and actuating the draw adapter connection, eliminating the need for separate fastening screws and simplifying the overall system structure while maintaining secure attachment.
Solution Approach 2:
The clamping slides serve multiple functions: they clamp the chuck to the spindle, actuate the draw adapter through the rotary member, and can be rapidly positioned between locked and released states. This multi-functionality reduces the number of separate components needed, simplifying the fastening system while ensuring reliable chuck attachment.
3Productivity
If the draw adapter is permanently attached to the draw tube, then the fastening system becomes simpler and chuck changes are faster, but the ability to adjust or maintain the draw adapter connection is reduced
Solution Approach 1:
The draw adapter is pre-attached to the draw tube in a fixed, permanent connection that requires no adjustment during operation. This preliminary action ensures that the draw adapter is always in the correct position and orientation, eliminating the need for maintenance adjustments while enabling rapid chuck changes through the fastening device alone.
Data Source
Figure 1~3
Figure 4a~5c
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AI summary
The invention concerns a securing device (16) for securing a chuck, in particular a power-operated chuck (14; figure 1), on a rotating spindle (12; figure 1) of a machine, wherein a rotating element (46) and at least one chucking-slide assembly (66) are provided in a main body (42) in such a way that, when the rotating element (46) turns, the chucking-slide assemblies (66) change their radial position such that, in a chucking position, they force the chuck (14) against the securing device (16) in the axial direction.