In order to ensure the flexibility and versatility of parts, it is necessary to have strict requirements on the machining accuracy of parts. With the development of science and technology, the processing of parts can be completed by CNC lathe. Only the graphics and process parameters of parts need to be input into the CNC system in the form of data, so that the machine can complete the whole processing process, and various required parts can be manufactured, which is widely used in life. However, the quotation of CNC lathe processing is relatively complex and prone to errors, so how to accurately quote CNC lathe processing has become the focus of many people's attention.
The main factors that make the quotation of CNC lathe more complicated are as follows:
1. There will be obvious differences in the processing batch, single piece processing and mass processing prices of CNC lathes.
2. Complexity of the workpiece: the complexity and tolerance of the workpiece, especially the geometric tolerance, that is, the accuracy level. The higher the accuracy, the more complex the process, the higher the price, but this is not absolute. This also has a great impact on the quotation.
3. Labor hour price in the market: due to the location and environment of the factory, there will be a big gap in the labor hour cost of workers.
4. Material cost: material quality, easy cutting degree, etc.
These factors all affect the quotation, so the quotation is a comprehensive problem. Sometimes the price of processing waste has to be calculated when the batch is large, and sometimes the waste is often a large quotation expense.
Due to the flexibility of machining, that is to say, a part can have many kinds of process arrangements, and the results of quotation will be very different.
Quotation method of CNC lathe
We take the screw processed with raw materials as an example. First of all, the outer diameter of the car needs a knife. Record the speed and feed rate, and then you can calculate that the time of a knife is 24 ÷ (speed × Feed rate) is about 2min (24= tool 20 + tailing width and cutter width).
The next step is to turn the screw thread. When you know the pitch in the thread, you can calculate the length of the turn. Add the estimated turn of the tailing width, and calculate the time according to the speed. The return time of each knife is generally calculated according to the time. Add up to turn the screw thread, and you can calculate the time of losing the knife.
The last step is to cut off, and then add the time of the above steps to get the corresponding working hours. And this method of calculating working hours is more accurate.
Attachment: Hourly processing price of CNC lathe
1. C616 lathe: Φ three hundred and twenty × 750~1000, 22 yuan / hour
2. C6140 lathe: Φ four hundred × 1000~2000, 26 yuan / hour
3. J1-mazak lathe: Φ four hundred and sixty × 1000~2000, 30 yuan / hour
4. C6150 lathe: Φ four hundred and sixty × 1000~2000, 32 yuan / hour
5. C630 lathe: Φ six hundred and thirty × 1000~2000, 42 yuan / hour
6. C650 lathe: Φ eight hundred × 1500~5000, 60 yuan / hour
