Dual-Mode Spindle Coupling for Precise Tool Presetting and Clamping
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Solution Overview
Problem
Existing tool presetting and measuring devices lack flexibility in terms of precision and torque, making them inadequate for both precise measurement and secure tool clamping processes, which limits their operational reliability and automation capabilities.
Innovation Solution
A tool presetting and measuring device with a spindle unit that has a mechanical coupling mechanism to switch between two modes: a high-precision mode for positioning and a high-torque mode for clamping, utilizing a separate drive unit to generate increased torque for automated tool clamping and unclamping without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single drive unit is used for the spindle unit, then the device structure is simple, but the flexibility to switch between high precision positioning and high torque clamping modes is insufficient
Solution Approach 1:
The drive system is segmented into two separate drive units: a first drive unit optimized for high precision positioning with a first maximum torque, and a second drive unit optimized for high torque clamping operations with a second maximum torque that is higher than the first. This segmentation allows each drive unit to be independently optimized for its specific function, resolving the contradiction between versatility and structural simplicity.
Solution Approach 2:
The spindle unit is designed with multi-functionality to perform both precision positioning and high torque clamping operations. By integrating a coupling mechanism that can switch between two drive units, the spindle unit becomes a universal component capable of adapting to different operational requirements, thereby improving flexibility without requiring multiple separate devices.
2Force
If high torque is used for automated tool clamping, then the clamping force is sufficient, but the precision of spindle positioning during clamping is reduced
Solution Approach 1:
The drive system is divided into two specialized drive units: the first drive unit provides high precision positioning with lower torque suitable for measurement operations, while the second drive unit provides high torque for clamping operations. The coupling mechanism selectively engages the appropriate drive unit based on the operational phase, ensuring that high torque during clamping does not compromise positioning precision.
Solution Approach 2:
The system dynamically switches between two drive modes based on operational requirements. During positioning and measurement phases, the first drive unit is engaged for precise spindle positioning. During clamping and unclamping phases, the coupling mechanism switches to the second drive unit to deliver high torque. This dynamic adaptation resolves the contradiction between torque and precision.
3Extent of automation
If manual intervention is required for tool clamping, then operational flexibility is maintained, but automation capability and operational efficiency are reduced
Solution Approach 1:
The system is designed to automatically perform tool clamping and unclamping operations through the second drive unit, which can be activated without manual intervention. The coupling mechanism automatically engages the second drive unit when clamping operations are required, enabling the system to service itself and eliminating the need for manual operator intervention, thereby improving automation capability while maintaining operational flexibility through programmable control.
Data Source
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AI summary
The invention relates to a tool setting and/or tool measuring device (44) with a carrier unit (16) and with a spindle unit (84), in particular a motor spindle unit, supported by the carrier unit (16). The spindle unit (84) is designed to rotate an object (18), in particular a tool (10) and/or a tool holder (14), inserted into the spindle unit (84) about a spindle axis (20) of the spindle unit (84), and the spindle unit (84) has at least one drive unit (22) for generating the rotational movement of the object (18). It is proposed that the spindle unit (84) has a coupling unit (24) designed to drive the spindle unit (84), in particular to change the maximum achievable spindle torque, in at least two different modes (26, 28).