What fixtures are there for vertical CNC milling machines?

The product structure of East China CNC is more complete, the types are more complete, the reliability and stability are higher, and an industrial pattern with CNC machine tools as the main body and economic and popular machine tools as the supplement. The leading products are CNC gantry guide rail grinding machine series products, CNC gantry milling and boring machine series products (including fixed beam and fixed column, fixed beam moving column), CNC vertical and horizontal machining center, cylindrical grinding machine, universal radial milling machine, vertical machining center, surface grinding machine and other products.

(1) Positioning of cylindrical surface outside the workpiece: three-jaw chuck, four-jaw chuck, spring chuck;

2) Workpiece positioning with inner hole: rigid mandrel, spline mandrel, elastic mandrel;

3) The workpiece is positioned with the center hole: the center and the dial;

4) The workpiece is mainly positioned in a plane: flower plate, angle iron fixture.

The general clamping tools are: flat vise, indexing head, round table, V-shaped iron, T-bolt, nut, pressure plate, horn and so on.

Clamping method: 1. Clamping with the alignment method:

1. Put the workpiece directly on the machine tool workbench or in the machine tool accessories such as four-jaw chucks and machine vises, and clamp the workpiece according to one or several surfaces of the workpiece with a scratch needle or an indication table.

2. First, the marking process of the processing surface position is carried out according to the processing requirements, and then the alignment is carried out according to the drawn line marks to realize the clamping.

Second, use the fixture to clamp and install:

The workpiece is mounted on the fixture, and the clamping method of the accurate machining position can be directly obtained without alignment.

Milling machine fixture means a fixture that is mainly used to process grooves, planes, splines and various forming surfaces on parts. The milling machine fixture is usually installed on the workbench of the milling machine, which is composed of a clamping body, a connecting element, a positioning device, a clamping device, and a tool setting element. Since the milling machine fixture is used for processing, the requirements for clamping force, fixture stiffness and strength are relatively high.

According to the feed mode of milling, the milling machine fixture can be divided into three types: straight chain mu filial piety line feed type, circumferential feed type and die feed type.

Precautions for the design of milling machine fixtures:

1. First of all, the process of the parts should be analyzed, and the flatness and surface roughness of the parts should be analyzed and summarized one by one.

2. Select the manufacturing form of the blank.

3. Select the milling method. Milling includes face milling, perimeter milling, symmetrical milling, asymmetrical milling, and wax resistance to choose a more favorable milling method for the manuscript.

4. Choose a good tool. In the process of cutting, the tool must withstand a lot of impact force, so it is very important to choose a tool with high strength and good toughness, so that the tool is not easy to break.

5. Calculate the amount of milling. In the case of ensuring that the process allows, it is best to choose a relatively large tooth feed, and finally determine the cutting speed.