Dual Tool Post Vibration Cutting for Flexible Chip Segmentation
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Solution Overview
Problem
Existing machine tools with a single tool post for vibration cutting are limited in setting the number of vibrations per rotation, making it difficult to segment chips effectively and leading to potential damage from continuous chip wrapping around the workpiece or tool.
Innovation Solution
A control device for a machine tool that allows independent control of two tool posts, enabling different reciprocation rates and phases for each cutting tool, allowing for customizable vibration cutting patterns to segment chips effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two tools are installed on one tool post, then chip segmentation capability is improved, but the number of vibrations per rotation cannot be easily set
Solution Approach 1:
The invention divides the tool post into two independently controllable tool posts (first tool post and second tool post), each capable of independent reciprocation. This segmentation allows each tool to have its own vibration parameters, enabling flexible setting of the number of vibrations per rotation while maintaining chip segmentation capability.
Solution Approach 2:
The invention introduces dynamic control by making the reciprocation of the first tool post and second tool post independently controllable. The control device can adjust the reciprocation frequency, amplitude, and phase of each tool post separately, providing dynamic flexibility in setting vibration parameters during operation.
2Device complexity
If one tool post is used, then device complexity is reduced, but vibration parameter flexibility is limited
Solution Approach 1:
The invention makes each tool post universal by equipping both the first tool post and second tool post with independent reciprocation capabilities. Each tool post can function independently with its own vibration parameters, allowing the system to adapt to different machining requirements while maintaining a relatively simple dual-tool-post 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 flexible setting of vibration parameters, improves tool life and machining accuracy by reducing force fluctuations and allowing for non-integer vibration settings, facilitating easier condition settings and prompt operation.
Implementation Method 1
a relative reciprocal movement between the workpiece and a cutting tool in a feed direction to perform vibration cutting to the workpiece
Data Source
AI summary
A control device for a machine tool and a machine tool, for which settings of the number of vibrations per rotation become easy, is provided. The control device of the machine tool controls a relative rotation between a workpiece and a cutting tool and a relative reciprocal movement between the workpiece and the cutting tool in a feed direction to perform vibration cutting to the workpiece. The control device includes a control section for controlling a spindle headstock, a first tool post, and a second tool post, the workpiece W being installed on the spindle headstock, the first tool post being provided to be reciprocally movable along the feed direction with respect to the spindle headstock and installed with a first cutting tool for cutting the workpiece, and the second tool post being provided to be reciprocally movable along the feed direction with respect to the spindle headstock independently of the first tool post and installed with a second cutting tool for cutting the workpiece.