What are the standards and specifications for the size and geometry of CNC tool handles?

A CNC tool handle is a mechanical part used to fasten the cutting tool to the tool head for precise cutting. The size and geometry of the tool handle are very important, because they directly determine the accuracy, stability and life of the tool. Therefore, the standards and specifications for manufacturing CNC tool handles are very important, they ensure that the quality and performance of the tool handles meet the design requirements, and provide some common sizes and geometers for coordination and communication between different manufacturers and users.

First, the standard and specification of CNC tool handle

1. International standards

ISO (International Organization for Standardization) has developed a large number of standards, specifications and guidelines, these documents cover the machinery parts, tools, machine tools and other fields. For CNC tool handles, ISO has formulated the following standards:

ISO 12164-1: Shank and joints for steel cutting tools - Part 1: Shank

ISO 26623-1: Flexible clamping systems for machine tools - Part 1: tool holder interface systems

These standards specify the size, geometry, assembly methods, materials and heat treatment requirements of CNC tool handles. The national standards and industry standards of each country also refer to ISO standards to ensure that the domestic production of CNC tool handles comply with global standards and specifications.

2. National standards

China has also developed a series of standards and specifications, covering the manufacture, inspection and use of CNC tool handles. Here are some typical criteria:

GB/T 23840.1-2009: Tool handles and joints - Part 1: Tool handles

GB/T 27817-2011: Tool handle interface system for flexible clamping systems for machine tools

These standards cover the size, geometry, manufacturing quality requirements, inspection methods and marking requirements of CNC tool handles. The purpose of formulating these standards and specifications is to improve the quality and technical level of CNC tool handles, promote the development of the domestic CNC tool industry, and strengthen international technical exchanges and cooperation.

Second, the size and geometric shape of the CNC tool handle

The size and geometry of the NC tool holder depends on the specific cutting tool and machine tool model. Usually, the following factors need to be considered at the same time when designing CNC tool handles:

1, cutting force and torque: CNC tool handle must be strong enough to withstand high-speed, heavy load cutting work. The diameter and section shape of the shank must be appropriate to ensure adequate rigidity and load carrying capacity.

2, accuracy and stability: the size and geometry of the CNC tool handle must be accurate and stable enough to ensure that the cutting tool can be accurately positioned and moved. The tool handle surface roughness and straightness, Angle, position tolerance and other elements must be controlled within a reasonable range.

3, easy to install and replace: CNC tool handle must be easy to install and replace to improve production efficiency and flexibility. The interface form, diameter, length and tolerance of the tool holder must meet the standard requirements to ensure compatibility with the machine and cutting tools.

4, wear and corrosion resistance: CNC tool handle must be wear and corrosion resistance to extend service life and reduce maintenance costs. The material and surface treatment of the tool handle must be selected appropriately to meet the requirements of durability and protection.

Considering the above factors, the size and geometry of NC tool handle is a relatively complex problem. Specific standards and specifications provide some common schemes and reference values, but in reality, the needs of different manufacturers and users may vary. Therefore, when manufacturing and using CNC tool handles, it is necessary to adjust and optimize according to the specific situation to ensure the stability, reliability and performance of the tool.

Third, the application of CNC tool handle

CNC tool handles are widely used in a variety of high-precision machining and milling operations, including CNC machining centers, drilling machines, milling machines, lathes, etc. They fasten the tool to the tool handle by clamping or threaded interfaces for transmission and machining with the machine spindle. The quality and accuracy of CNC tool handle have a decisive impact on the machining accuracy and surface quality, so it is one of the very important parts in CNC machining.

In practical applications, CNC tool handles need to be inspected and maintained frequently to ensure their performance and life. For example, the threaded interface of the tool handle should be refueled and ventilated to avoid excessive wear and corrosion; The clamping mechanism of the tool handle should be cleaned and maintained regularly to avoid poor contact and weak clamping; The surface of the handle should be checked frequently to avoid scratches and damage.

In short, the size and geometry of CNC tool handle is an indispensable part of CNC machining, which directly affects the processing quality, production efficiency and production cost. Therefore, the manufacturing and use of CNC tool handle must follow the relevant standards and specifications, at the same time, combined with their own actual situation to optimize and improve to meet different processing needs.