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A must-have jig for gear machining!
Collet-type chuck jig designed for high-precision machining and short changeover time
Stable gripping with runout accuracy less than 10μm!
Quick change mechanism for multiple products
Amazing facts!
── Introducing ideas and technologies ──
The “High Precision work chuck jig” is a jig that clamps a workpiece by expanding / contracting the collet.
Stable clamping is realized by setting the clamping force according to the body shape and cutting resistance according to the cutter’s machining trajectory, and by utilizing CAE analysis.
Furthermore, various quick-change mechanisms enable easy stage changes to accommodate a wide variety of workpieces.
This contributes to “stable runout accuracy” and “reduction of man-hours” required for step changes.
Target process: Gear cutting (hobbing, skiving), gear teeth grinding
Gear cutting process
Gear teeth grinding process
Structure and feature description
Inside diameter chuck type
Outer diameter chuck type
High precision clamping mechanism:
- High precision expansion structure
- Optimal collet shape based on CAE analysis
High rigidity body shape:
- Ensuring maximum rigidity according to the cutter trajectory
Optimal retraction mechanism:
- Setting clamp force according to the cutting force
This is the point!
Jig design with consideration of product changeover
Excellent!
Quick change of parts
Complete the changeover by replacing the reference seat and collet
Reference seat replacement
Quick change by key hole design
Collet replacement
Quick change by unique mounting mechanism
Approx. 50% less setup time when compared with conventional products!
Quick change of chuck
The chuck can be changed with one operating screw
Chuck replacement
Quick change mechanism allows easy positioning and fixing
Easy changeover
Replacing only the chuck. Also supports changeover of inner/outer diameter chuck type.
Approx. 67% less setup time when compared with conventional products!
Development / product concept
“Current status and challenges”
- Electric vehicles require high-precision transmission gears so that the motor can be driven with high efficiency. For this reason, precision machining is essential, especially in the gear cutting and gear grinding processes.
- In addition, with the increasing need for multiple-product production, it is necessary to change fixture stages easily and quickly.
“Development points”
- In the “high-precision work chuck jig”, a high-precision and stable work chuck has been developed with an optimal clamping mechanism, body shape, and clamping force.
- Furthermore, the quick-change mechanism allows for easy change-over in multi-product production, contributing to a reduction in man-hours.