The CNC lathe is a one-time clamping and continuous and automatic processing to complete all turning procedures. Pay attention to the following aspects:
1. Choose the cutting amount reasonably.
2. Choose a tool reasonably
(1) When roughing, choose high-strength and durable tools to meet the requirements of large back-grabbing and large feed when roughing;
(2) When finishing turning, choose high-precision and durable tools to ensure the requirements of machining accuracy. ；
(3) In order to reduce the time of tool change and facilitate tool setting, machine clamped knives and machine clamped blades should be used as much as possible.
3. Reasonable selection of fixtures
(1) Try to use general fixtures to clamp the workpiece, avoid using special fixtures;
(2) The parts positioning datum coincides to reduce the positioning error.
4. Determine the CNC lathe processing route
The processing route is the movement track and direction of the tool relative to the part during the processing of the index-controlled lathe;
(1) It should be able to ensure the processing accuracy and surface roughness requirements;
(2) The processing route should be shortened as much as possible to reduce the tool idle travel time.
5. The relationship between CNC lathe machining route and machining allowance
At present, under the condition that the CNC lathe has not yet reached the popular use, the excess margin on the blank, especially the margin containing the forging and casting hard skin layer, should be arranged on the ordinary lathe for processing. If you must use a CNC lathe to process, you need to pay attention to the flexible arrangement of the program.
6. Main points of fixture installation
At present, the connection between the hydraulic chuck and the hydraulic clamping cylinder is realized by a tie rod. The main points of hydraulic chuck clamping are as follows: first use a moving hand to remove the nut on the hydraulic cylinder, remove the pull tube, and pull it out from the rear of the spindle, and then use the moving hand to remove the chuck fixing screw to remove the chuck.
