Masatool Microconic System
Overrun chuck for automatic lathe sub-spindle
The Microconic system is a collet chuck system for the rear main spindle (sub-spindle) of automatic lathes. It features a precision collet for small diameters that allows for easy numerical adjustment of clamping force, as well as an overgrip collet that can clamp over steps with a maximum diameter of 4 mm. The cartridge used for this system has a shape compatible with standard collets, allowing for easy installation on equipment without the need for modifications.
basic information
Q1. Why is the gripping force stronger than conventional collets? A1. Due to its unique shape, the action point is closer to the force point, achieving a high gripping force. Q2. What does it mean to open 4mm larger than the gripping diameter? A1. It has a special shape and heat treatment that allows the jaws to open wider. It is commonly referred to as a "jump chuck." Q3. Is it possible to adjust the gripping force easily without experience or special skills? A3. The gripping force can be adjusted numerically with a dedicated wrench. Q4. Can the collet be replaced without removing the nut? A4. The conventional collet part is a dedicated cartridge, and a special collet is attached to its tip. The collet at the tip can be replaced without loosening the nut.
Price range
Delivery Time
Model number/Brand name
Masatool
Applications/Examples of results
Case Study of Implant Component Machining Material: Titanium Alloy Machine: Star Micronics SR20 Conventional Method: To prevent chuck slippage due to thrust resistance during hex broaching, most of the implant machining was performed on the main spindle. As a result, the machining time on the sub-spindle side was extremely short, leading to long waiting times. [Effect 1: Reduction in Machining Time] Machining that previously took 164 seconds can now be completed in 98 seconds. External diameter machining is performed on the main spindle, while all internal diameter machining is done on the sub-spindle side. This is possible because the micro-conic system has a strong gripping force that can withstand thrust resistance during broaching. The precision of concentricity of 25μ between the internal and external diameters was also impossible to achieve with conventional long-nose collets. [Effect 2: Reduction in Manufacturing Costs] With the increase in production speed, costs have been reduced by 44%. Previously, burrs remained after screw machining due to the need for cutting through, which required manual removal. However, the change in machining order has made the burr removal process unnecessary.
