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Reasonable selection of cutting amount

For metal cutting, the material to be processed, the cutting tool, and the cutting conditions are the three major elements. These determine machining time, tool life and machining quality. An economical and effective machining method must be a reasonable choice of cutting conditions.

The three elements of cutting conditions: cutting speed, feed and depth of cut, these three directly affect the damage of the tool. The selection of suitable processing conditions is based on these factors. Regular, steady wear to life is the ideal condition. However, in practice, the choice of tool life is related to tool wear, dimensional changes to be machined, surface quality, cutting noise, machining heat, etc. When determining the processing conditions, it is necessary to study according to the actual situation. For difficult-to-machine materials such as stainless steel and heat-resistant alloys, coolants or rigid cutting edges can be used.

Reasonable choice of tools

1. When rough turning, a tool with high strength and good durability should be selected, so as to meet the requirements of large amount of knife and large feed during rough turning.

2. When fine turning, a tool with high precision and good durability should be selected to meet the requirements of machining accuracy.

3. In order to reduce the tool change time and facilitate tool setting, machine-clamped knives and machine-clamped blades should be used as much as possible.

Reasonable selection of fixtures

1. Try to use general fixtures to clamp the workpiece, and avoid using special fixtures;

2. The positioning datum of the parts is coincident to reduce the positioning error.

Processing route

The machining route is the movement track and direction of the tool relative to the part during the machining process of the index-controlled machine tool.

1. It should be able to ensure the machining accuracy and surface roughness requirements;

2. The processing route should be shortened as much as possible to reduce the idle travel time of the tool.

Fixture installation points

At present, the connection between the hydraulic chuck and the hydraulic clamping cylinder is realized by a pull rod. The main points of the hydraulic chuck clamping are as follows: first, remove the nut on the hydraulic cylinder with a wrench, remove the pull tube, and pull it out from the rear end of the main shaft, and then The chuck can be removed by removing the chuck fixing screw with a wrench.