CNC Lathe Machining Aluminum to Guaranteed Size
First of all, on the premise of aluminum materials, the following aspects need to be considered:
I. Irresistible factors:
1. The stability of the CNC lathe itself. If it is not a new machine tool or machine tool into a large number of processing without debugging, there will be a machine tool itself caused by the dimensional error. Caused by the machine itself error has the following factors:
Mechanical aspects:
a. Looseness between the servo motor and the screw.
b.Wear of ball screw bearing or nut.
c. Insufficient lubrication between the screw and the nut.
Electrical aspects:
a.Failure of servo motor.
b.Dirt inside the scale.
c.Servo amplifier failure.
System parameters can be PMC recovery, so omitted.
2. Cooling deformation of the workpiece after processing. This basically can not be avoided, try to pay attention to the use of coolant in processing, as well as in the in-position measurement, pay attention to the deformation of the workpiece after cooling.
Second, avoidable factors:
1. CNC lathe machining process
In fact, most of the actual machining errors are caused by unreasonable machining process, in order to ensure that the basic machining process (such as milling CNC machining, “first rough and then fine, the first face after the hole, the first large surface after the small surface,” or the use of fixtures, “reduce the number of clamping times, as far as possible, the use of a combination of fixture “and other basic details of the machining process) on the basis of minimizing iron filings on aluminum parts caused by machining errors, because aluminum parts are very soft, excluding iron filings can easily make the aluminum parts caused by machining errors. For example, in the FANUC or Huazhong machining center, hit the deep hole as far as possible to use the G83 instruction, so that iron filings can be discharged, rather than the G73 instruction.
2. Cutting three elements: cutting speed vc, feed f, depth of cut ap and tool compensation
This is really not good to say in detail, in simple words, is to ensure that the processing quality and tool wear under the premise of adjusting parameters to give full play to the cutting performance of the tool, so that the highest cutting efficiency, the lowest processing costs. In the CNC lathe, there are elements such as tool head wear compensation.
3. Numerical calculation in manual programming and automatic programming
In manual programming, calculation errors are also common, but now most of the production is automatic programming.
4. Tool setting
Inaccurate tool setting is also a factor that causes dimensional errors, try to choose a good edge finder, if the machine has an automatic tool setter, it would be better, if there is no edge finder. Try to cut it, this is the operating experience.
I. Irresistible factors:
1. The stability of the CNC lathe itself. If it is not a new machine tool or machine tool into a large number of processing without debugging, there will be a machine tool itself caused by the dimensional error. Caused by the machine itself error has the following factors:
Mechanical aspects:
a. Looseness between the servo motor and the screw.
b.Wear of ball screw bearing or nut.
c. Insufficient lubrication between the screw and the nut.
Electrical aspects:
a.Failure of servo motor.
b.Dirt inside the scale.
c.Servo amplifier failure.
System parameters can be PMC recovery, so omitted.
2. Cooling deformation of the workpiece after processing. This basically can not be avoided, try to pay attention to the use of coolant in processing, as well as in the in-position measurement, pay attention to the deformation of the workpiece after cooling.
Second, avoidable factors:
1. CNC lathe machining process
In fact, most of the actual machining errors are caused by unreasonable machining process, in order to ensure that the basic machining process (such as milling CNC machining, “first rough and then fine, the first face after the hole, the first large surface after the small surface,” or the use of fixtures, “reduce the number of clamping times, as far as possible, the use of a combination of fixture “and other basic details of the machining process) on the basis of minimizing iron filings on aluminum parts caused by machining errors, because aluminum parts are very soft, excluding iron filings can easily make the aluminum parts caused by machining errors. For example, in the FANUC or Huazhong machining center, hit the deep hole as far as possible to use the G83 instruction, so that iron filings can be discharged, rather than the G73 instruction.
2. Cutting three elements: cutting speed vc, feed f, depth of cut ap and tool compensation
This is really not good to say in detail, in simple words, is to ensure that the processing quality and tool wear under the premise of adjusting parameters to give full play to the cutting performance of the tool, so that the highest cutting efficiency, the lowest processing costs. In the CNC lathe, there are elements such as tool head wear compensation.
3. Numerical calculation in manual programming and automatic programming
In manual programming, calculation errors are also common, but now most of the production is automatic programming.
4. Tool setting
Inaccurate tool setting is also a factor that causes dimensional errors, try to choose a good edge finder, if the machine has an automatic tool setter, it would be better, if there is no edge finder. Try to cut it, this is the operating experience.
