Automatic Tool Changer Axial Movement for Gear Machines
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Solution Overview
Problem
In gear manufacturing machines with automatic tool changers, the design is complicated due to varying interference regions caused by hob cutters of different lengths, limiting shape and operation options, and posing safety risks, especially when space constraints are present for chip conveyers and cuttings boxes.
Innovation Solution
A gear manufacturing machine with an automatic tool changer that includes tool holding, moving, rotating, and positioning mechanisms, allowing the tool holder to move parallel to the tool spindle's axial direction, rotate around a vertical axis, and adjust vertically, while also incorporating presence detection and door state monitoring for safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If hob cutters are moved at an angle relative to the hob clamping device, then tool exchange can be automated, but the interference region varies depending on the axial direction length of the hob cutter, complicating the design process
Solution Approach 1:
The patent changes the movement direction from angular/oblique to linear/axial (parallel to the axial direction of the tool spindle). This dimensional change ensures that the interference region remains constant regardless of the hob cutter length, simplifying the design process while maintaining automation.
2Extent of automation
If the automatic tool changer is positioned on the front side or rear side of the hobbing machine, then tool exchange can be automated, but space for control panels, maintenance operations, chip conveyers, and cuttings boxes is required, limiting available space
Solution Approach 1:
The patent integrates the automatic tool changer functionality within the existing structural space of the hobbing machine by moving the tool holder along the axial direction. This allows the system to perform multiple functions (tool exchange, chip removal, control panel installation, maintenance operations) within the same spatial footprint, effectively utilizing available space without requiring additional front or rear space.
3Duration of action of moving object
If workers manually exchange heavy lengthened machining tools to extend tool lifespan, then tool usage is extended, but worker safety risks increase and physical burden increases
Solution Approach 1:
The patent implements an automatic tool changer that performs tool exchange without human intervention. The system uses a tool holder with moving means and rotating means to automatically replace hob cutters on the tool spindle, eliminating the need for workers to manually handle heavy tools and thereby removing safety risks and physical burden while maintaining extended tool lifespan.
Data Source
AI summary
A gear manufacturing machine for which a machining tool detachably attached to a tool spindle is exchanged by means of an automatic tool changer, wherein the automatic tool changer is provided with: tool holding means for detachably holding a machining tool to be exchanged; moving means for moving the tool holding means in a direction parallel to the axial direction of the tool spindle; and rotating means for rotating the tool holding means.