Although machine tool fixtures are divided into different types, their working principles are basically the same.

(This article is selected from "Mechanical Processing Features and Practical Cases" Chapter 2 (2) Composition of Machine Tool Folder)

(1) Positioning device

This device includes a combination of components or components. Its role is to determine the position of the parts in the fixture, and it is in the correct position of the parts relative to the tool and cutting forming movement during processing. For example, V -shaped blocks, positioning ring, and positioning sales are positioned elements.

(2) Clamping device

This device is usually a kind of institution, including clamping components (such as clamps, pressure plates, etc.), increasing force and transmission device (such as lever, thread transmission, oblique wedge and cam), and power device (such as cylinder, hydraulic cylinder, hydraulic cylinder, and hydraulic cylinder Wait). Its role is to press the parts tightly and clamp it to ensure that the position occupied by the parts during the positioning is not displaced due to gravity, inertial force, and cutting force during the processing process, and at the same time prevent or reduce vibration.

(3) Determine components of the fixture on the position of the machine tool

The role of this type of component is to connect to the machine tool clip to determine the mutual position of the fixture to the machine tool workbench, guide rail or main axis.

(4) Components of determining the size of the fixture and the position of the tool

The common role of this type of component is to ensure the correct processing position between parts and tools. According to the application, it can be divided into two categories: First, components used to determine the position of the tool and guide the tool for processing, which are called guided elements. The second is to determine the component of the correct position before processing, which is called a pairing component.

(5) Other devices or components

This type of device or component is mainly included: the separation device set on the surface set on different positions to make the parts in different positions in one installation, to facilitate the unloading of the parts, and the standardized connection component set up Wait.

As shown in Figure 2-3, the rotation device of the rotation of the pores in Figure 2-3 is processed by the parts of the parts of the parts by inserting and pulling the positioning 1, rotating positioning clamping on the tile 2, and processing the rotation scores of the parts by drilling mold

(6) Specifies

It is used to connect the components and devices of the fixture to make it an overall basic part and use it to connect to the relevant parts of the machine to determine the position of the fixture relative to the machine. It is the foundation and skeleton of the fixture. The positioning device, clamping mechanism, and other devices or components are installed on the clip to make it a fixture as a whole.