Unclamping Arm Layout to Prevent Cam Interference in Machine Tools
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Solution Overview
Problem
The existing unclamping lever designs in machine tools can interfere with other members due to a short distance between the cam surface and other components, leading to potential mechanical issues during operation.
Innovation Solution
The unclamping arm is designed with a fulcrum section, a force point section, and an action point section, where the force point section is positioned away from the fulcrum section towards the upright column, allowing it to avoid interference areas and enabling a compact, integrated design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the unclamping lever is designed with a linear structure extending in the up-down direction, then the structure is simple and easy to manufacture, but the cam surface may interfere with other members such as the ball screw when the lever swings forward
Solution Approach 1:
The unclamping lever is redesigned from a linear up-down structure to an L-shaped structure with horizontal and vertical sections. This dimensional change repositions the cam surface away from the interference area near the ball screw, eliminating the risk of collision while maintaining structural simplicity and manufacturability.
2Reliability
If the force point section is positioned away from the fulcrum section towards the upright column, then interference with other members is avoided, but the arm structure becomes more complex
Solution Approach 1:
The unclamping lever is segmented into distinct functional sections: a horizontal arm section extending toward the upright column, a vertical cam surface section, and a pressing section. This segmentation allows each part to be optimized for its specific function while maintaining overall structural efficiency and reducing complexity compared to a fully reconfigured mechanism.
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
This design effectively avoids interference with other members, ensuring smooth operation and allowing for a more compact and efficient unclamping mechanism in machine tools.
Implementation Method 1
an unclamping arm (50) rotatably supported within a spindle head (6)... a fulcrum section (63, 64) rotatably supported within the spindle head (6), a force point section (54, 81), which, in conjunction with movement of the spindle head (6), comes into contact with a contact section provided on the upright column (5) and receive an external pressure, and an action point section (57, 58) configured to, by the force point section (54, 81) rotating about the fulcrum section (63, 64) upon receiving the external pressure, press or not press the tool gripping mechanism
Data Source
AI summary
An unclamping arm includes a right fulcrum section, a left fulcrum section, a cam follower, and pressing sections. The right and left fulcrum sections are rotatably supported within a spindle head. The cam follower, in conjunction with the movement of the spindle head, 5 contacts a cam surface provided to an upright column, and receives external pressure. As a result of the cam follower receiving external pressure, the pressing sections rotate about the right and left fulcrum sections, thereby pressing or not pressing pins of a draw bar provided within a spindle. The pressing sections are positioned between the cam follower and the right and left fulcrum sections; the right fulcrum section, the left fulcrum section, and the pressing sections are 10 positioned on a straight line intersecting the axial direction of the spindle; and the cam follower is positioned separated to the upright column-side from the right and left fulcrum sections.