What are the classification of fixtures in CNC lathe processing?

The tooling fixture in CNC lathe processing is a process device used to fasten the workpiece quickly and keep the machine tool, tool and workpiece in the correct relative position during CNC machining. It can be said that tooling and fixtures are indispensable components in machining. Driven by the development of machine tool technology in the direction of high speed, high efficiency, precision, compounding, intelligence, and environmental protection, fixture technology is moving towards high-precision, high-efficiency, modularization, compounding, Generalization and economical development.

Tooling fixtures are also called fixtures. Broadly speaking, any step in the machining process in order to quickly, easily and safely install the workpiece can be referred to as a fixture. Such as welding fixtures, inspection fixtures, assembly fixtures, machine tool fixtures, etc. The most common of these tooling fixtures, often referred to simply as fixtures.

What are the types of fixtures we use for CNC lathe processing? The following is a detailed classification of the fixtures by Dongguan CNC machining.

One: Universal CNC lathe machining fixture

Ordinary CNC CNC lathe machining fixture refers to a fixture that has been standardized and can process various workpieces within a certain range. For example, three-jaw and four-jaw chucks on lathes, pointed and heart clamps, flat-nose pliers on milling machines, indexing heads and rotary tables, etc. These tools are very versatile and can be fitted with different workpieces without any adjustments. Such fixtures have generally been standardized. Specialized manufacturers, supply users as machine tool accessories.

two: special CNC lathe machining fixture

special CNC numerical control lathe machining fixture refers to a process specially designed for machining a certain workpiece And designed CNC lathe machining fixture with the advantages of compact structure, fast and convenient operation. The special fixture is generally designed and manufactured by the manufacturer according to the requirements, and is suitable for large-scale fixed type and mass production.

Three: Combined CNC machining fixture

The combined CNC CNC lathe machining fixture is based on the standardization of machine tool fixture parts, and is made of a set of prefabricated fixtures. It is a kind of processing fixture that assembles standard parts and parts with various shapes and sizes into various special workpieces according to the combined principle and processing needs. After use, the fixture can be removed and used when assembling a new fixture.

Combined CNC lathe machining fixtures are widely used. The fixture is suitable for various occasions, such as many varieties, rapid changes, trial production of new products and single-piece small batch production, etc. It can also be used for mass production to replace temporary shortage of special fixtures to meet production needs. The combined fixture can be assembled into various machine tool fixtures. The emergence of CNC machine tools and flexible manufacturing cells has further promoted the progress of combined fixture technology and expanded its application range.

The combined CNC machining fixture has the following characteristics: the combined CNC machining fixture components can be used multiple times, but once it is assembled, it is still a special structure and can only be used once. When converting the processing object, it is generally still necessary to disassemble all the processing objects and reassemble them into a new fixture structure to meet the processing requirements. Different from the special CNC machining fixture, the final accuracy of the combined CNC machining fixture is guaranteed by the precision and direct combination of each component, and no additional processing can be performed, otherwise the interchangeability of the components cannot be guaranteed. The rigidity of the combined fixture of each standard part is poor, especially the contact rigidity of the joint surface of the component connection, which has a great influence on the machining accuracy. The external dimensions of ordinary combination clamps are much smaller than special clamps. The fixture is not limited by the production type, and can be assembled at any time according to production needs.

Four: Prefabricated CNC lathe machining fixture

Assembled CNC machining fixture refers to a standardized series of fixture components, according to a certain According to the processing requirements of a certain process of the workpiece, according to the assembly method of the special CNC processing fixture (pin positioning, bolt tightening), the special CNC processing fixture is directly assembled. The use of assembly fixtures greatly shortens the design and manufacturing cycle of special fixtures, and after product modification, most of the original fixtures can still be disassembled and reused, which is suitable for multi-variety and small-batch production.

Five: Universal adjustable CNC lathe processing fixture

Ordinary adjustable CNC CNC lathe processing fixture refers to the adjustment or replacement of various Positioning elements or clamping elements, special fixtures made according to different sizes or types of workpieces. The process goal is not clear, the general scope is large, and it is suitable for multi-variety and small batch production.

Six: Combination CNC lathe machining fixture

Combined CNC CNC lathe machining fixture refers to a fixture specially designed for the combined machining process An adjustable fixture designed for machining a set of parts. The process goal is clear, and it can be used only by adjusting or replacing a single positioning element or clamping element. The adjustment range is limited to the workpiece of the part assembly, which is suitable for group processing.

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