Analysis of the definition of tool code system

Considering the nature and ease of use of the features of the knife, the quantity, the auxiliary equipment and its components, the code system provides the auxiliary code for the main code of the tool, the measuring tool, the auxiliary tool and its parts, and the tool, the measuring tool, the auxiliary tool and its parts, For the parameter code, six classification code tables are set according to the three types of tooling; and a common classification code table is set for the auxiliary code and parameter code of the knife, the quantity, and the auxiliary parts.

The term definition is an important part of ensuring the uniqueness of the identification object classification code and the correct use of the classification code table. The system mainly defines the rough classification terms of the knife, the quantity and the auxiliary equipment. On the basis of citing the existing standard definitions, the necessary supplements are made as needed.

For example, a milling cutter is defined as a type of tool used for milling. Excludes threaded tools and gear tools.

In order to ensure the correctness and uniqueness of the code for the identification object, in addition to the definition and classification table, a set of coding rules with clear boundaries, conciseness and ease of understanding and operation must be developed. This system has developed the general rules for three types of tooling and the coding rules for knives, quantities and accessories.

(1) General rules for coding.

The general rule is the sharing rule that should be followed when coding knives, quantities, accessories and their parts.

Including: determining the basis of the three types of tooling classification codes; non-standard identification objects (special, general, assembly and parts) pattern design sequence number and design modification mark representation method; standard identification object specification mark format, regulations; basic The unit of the parameter and the specification of the character, etc.

For example, when coding a non-standard monolithic tool, gage, or accessory that consists of a single part, it is clearly not coded according to the part, but by the corresponding knife, quantity, and accessory.

(2) Code-specific rules.

Dedicated rules are based on the structural features or attributes of the tool, gage, and aids, and are separately defined for the coding rules.

For example: the labeling of the function parameter items in the non-standard tool parameter code: “Cylinder ball end mill marking the ball nose radius (pre-plus SR)”; the smooth limit gauge is expressed by the basic size and tolerance code of the workpiece to be inspected; The machine is roughly classified according to the machine used (using uppercase machine type letters), and then classified according to its function, name, and category.

(3) Example of coding.

A special left-handed fine-toothed taper thread cutter whose complete code is "D66007Bo02-M16xllJFll3O".

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