Rotatable Multi-Tool Broaching Unit for Die Cutter Rules
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Solution Overview
Problem
Current broaching machines for die cutter rules are bulky, complex, and require multiple units for different geometries, making them difficult to fine-tune and maintain, while lacking versatility and compactness.
Innovation Solution
A broaching unit with a tool-holding arm equipped with multiple interchangeable broaching tools that can be selectively activated, allowing for single-unit operation with reciprocal and rotational movements to accommodate various geometries without the need for multiple machines, and a method involving intermittent feeding and transverse arm movements to target specific areas on the rule.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple broaching units are arranged in succession along the feeding direction to process different geometries, then the machine can handle various rule geometries, but the machine becomes bulky, complex, and difficult to maintain
Solution Approach 1:
The patent implements a single broaching unit with a rotatable tool-holding arm that can selectively activate different broaching tools (first, second, third tools) positioned at different angular positions. This allows one universal unit to perform the functions previously requiring multiple separate units, thereby reducing machine complexity while maintaining versatility in processing different rule geometries
Solution Approach 2:
The patent transitions from a linear arrangement of multiple broaching units along the feeding direction to a rotational arrangement where tools are positioned angularly around a rotatable arm. This dimensional change from linear succession to angular distribution around a single unit enables multiple tool functions to be accessed from one location, reducing the machine's footprint and complexity while maintaining geometric versatility
2Adaptability or versatility
If multiple broaching units with different tools are used for different geometries, then various rule shapes can be produced, but the machine requires more space and is harder to fine-tune and maintain
Solution Approach 1:
The single broaching unit with rotatable arm and multiple selectively activable tools consolidates what would otherwise require multiple separate units. This universal design reduces the number of components that need maintenance and simplifies fine-tuning, as adjustments can be made from a single operational position rather than across multiple units
Solution Approach 2:
The rotatable tool-holding arm introduces dynamic positioning capability, allowing the operator to selectively bring different tools into the working position as needed. This dynamic accessibility simplifies operation and maintenance compared to fixed multiple-unit arrangements, as tools can be accessed and adjusted in sequence from a single location
3Device complexity
If a single broaching unit with multiple tools is used, then the machine becomes compact and versatile, but the tools need to be selectively activated and positioned
Solution Approach 1:
The rotatable tool-holding arm provides dynamic tool positioning, allowing selective activation of different broaching tools by rotating the arm to the appropriate angular position. This dynamic mechanism enables a compact single-unit design while maintaining ease of operation through simple rotational movement to access different tools
Solution Approach 2:
The system employs periodic activation of different tools through rotational positioning of the arm, where each tool position corresponds to a specific angular orientation. This periodic sequencing of tool activation simplifies the control mechanism while enabling versatile processing within a compact footprint
Data Source
AI summary
A broaching unit for rules of die cutters which comprises a supporting structure, for example a frame, a guide of a die cutter rule, and a tool-holding arm equipped with at least one broaching tool is described. The guide defines a sliding surface on which the rule is fed intermittently. The tool-holding arm is mounted on the supporting structure and is susceptible to reciprocating movements with respect to it and with respect to the guide, preferably forward and backwards movements along a transversal direction of the rule, just to intercept the die cutter rule with the broaching tool when the rule is stopped. Advantageously, the tool-holding arm is equipped with at least two broaching tools, for example four tools, and can be oriented with respect to the guide, for example can rotate on itself, to selectively activate one of the broaching tools, i.e. to bring one of the tools into contact with the rule.