Accuromm Central Europe

A tool engineering company that supports all work related to tools

Ideal for outside diameter based machining!

Hydraulic chuck jig designed for high-precision clamping and compact size

Grip runout accuracy of 5µm or less

Approximately 76% reduction in fixture height compared to collet chuck fixtures

Supports multiple part types through simple component replacement

Amazing facts!

── Introducing ideas and technologies ──

The “Hydraulic Chuck Jig” utilizes a hydraulic mechanism to securely clamp workpieces.
With simple operation using just one wrench, anyone can achieve high-precision clamping, enabling quick part changes for versatile applications.
It also features a compact design to meet demands for small size and light weight.
Ideal for workplaces requiring “high-precision clamping” and “versatile applications.”

Excellent clamping accuracy

Good!

This is the point!

Compact design for small equipment!

Excellent!

Height reduction by 76% allows the hydraulic chuck jig to be used in small equipment

This is the point!

Support for multiple product types through part replacement!

Excellent!

Changeover is completed by replacing the reference sheet and the collet

Modular design supports multiple product types

Development / product concept

“Current status and challenges”

  • High-precision gear machining is essential for the high-efficiency motor drive of electric vehicles, demanding precision processing in the gear cutting and gear grinding stages.
  • Furthermore, with the recent trend toward smaller workpieces and equipment, space-saving high-precision clamping fixtures are now required.

“Development points”

  • The hydraulic chuck jig employs a hydraulic mechanism to achieve high-precision clamping in a compact space.
  • Furthermore, it enables quick changeovers for diverse workpieces simply by swapping parts.

Product specifications

Tool name Hydraulic chuck jig
Features
  • Ultra high precision
  • Supports multiple product types by replacing parts
  • Also compatible with small and thin models
Purpose Turning/Grinding
Shrinkage amount øD×0.003 (ø0.06mm contraction for ø20)
Runout Accuracy Within 5 μm
Repeatability Within 2μm
Gripable diameter
(outer diameter)
ø10 and up
Tool name Collet chuck jig
Features
  • High precision
  • Quick Change Mechanism
  • Wide clamping range
Purpose Turning/Grinding
Shrinkage amount ø0.3mm
Runout Accuracy Within 10 μm
Repeatability Within 5 μm
Gripable diameter
(outer diameter)
ø12 and up