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On the design basis or technological basis of parts.

Then there should be a datum on the workpiece that only defines one or two dimensions.

To overcome similar fears,

How to eliminate false positives? In addition, for operators,

Hardness and heat treatment of workpiece materials;

Parts that require multiple processes, such as on a horizontal milling machine.

Know what Chinese means and how to solve the problem.

In addition, check whether it is necessary to replace new tools.

Such as mold parts, shell parts, etc.

Then edit the machining program. Machining required workpiece

In this example, the tool change point is selected as the tool initial point A.

In case of collision or malfunction,

It is easy to ensure the processing quality. Commonly used in three-coordinate linkage machining.

The end face of the chuck. When the lathe spindle rotates, it drives the three-jaw chuck to rotate.

It is best to choose the junction on both sides; Otherwise there will be knife marks.

How does the CNC shaft of machine tool cut through the motion trajectory?

From the cutting principle, end milling and peripheral milling belong to.

To finish the shape of B, close the designated area with D (cutting depth).

TD instruction specifies the tool number and tool length radius to store the registration number instruction.

Control principle and working method of simple numerical control system;

See the processing procedure for details. Determine the workpiece coordinate system and tool alignment point

Therefore, when programming, we must first determine the position of the tool alignment point.

Then use the left cutter radius compensation to process the rounded square.

The speed of rapid progress and the displacement of each step,

Brief introduction of function and its application in lathe machining center

Prepare the finishing procedure for this part, which is not processed in the drawing.

Reduce the number of tool change or grinding wheel correction;

Machine tool mechanical structure: it should be composed of machine tool mechanical structure;

Determine the specific numerical value of cutting parameters should be based on

And strive for a simple structure. Loading and unloading workpieces should be quick and convenient,

It can automatically drill, countersink and ream all the machined surfaces of the workpiece.

The surface roughness processed in this way is better.

The workpiece is driven and rotated by the toggle chuck on the spindle.

Complex curves and surfaces that are not easy to machine with ordinary machine tools.

() T is followed by four digits, with the first two digits indicating the tool number and the last two digits indicating the tool number.

Used for the processing of batch workpieces. After the first program debugging is completed,

When determining the feeding route, the following points are mainly considered:

When machining curved surface by three-coordinate linkage, wire cutting method is usually used.

In order to improve the utilization rate of machine tools, there are two ways to realize machine tool processing.

Establish a reasonable mathematical model of machining program,

Therefore, XYZ three-axis linkage machining is needed. Figure 3 Coordinate machining

Because the blanks of turning parts are mostly loaded materials or forgings,

The conical surface of the inner and outer shifting centers is toothed,

Machining non-circular curves such as parabolic cycloid involute,

And the resulting machining error is small. In order to improve the machining accuracy of parts,

Pay attention to the machine tool instructions when arranging the amount of rough and fine turning.

The connecting line between the front and rear centers should be coaxial with the center line of the lathe spindle.

According to the processing content to determine the use of tools as shown in the figure:

Not only the productivity is low, but also the surface quality is poor.

Accord to that blank required by the pattern and the technological condition of the previous process,

Fig. a shows a zigzag bidirectional feed mode,

Then only after the operator has mastered the operation of CNC machine tools,

Use a long-life cutter or grin wheel,

A shaft part having a cylindrical geometry,

The surface shape of the part shown in the figure is complex, and the blank is a clamping material.

Vibration should be avoided during processing; Avoid thermal denaturation during workpiece processing.

If a three-coordinate linkage machine tool is machined by wire cutting with a round-headed milling cutter,

The advantages of positioning are accurate and reliable centering and convenient installation.

It is beneficial to reduce tool consumption and processing cost.

Write the whole process of parts processing into a program list.

When turning threads, the spindle speed is set to S=r/in.

Prepare the cutter or grinding wheel, and the processing process is as follows

Maintain the thermal balance of each mechanical shaft of the machine tool when working,

Organize the above outline. Slot. Thread processing.

At first, I was more or less worried that the machine tool would collide with the knife and the machine.

We should also consider reducing the number of tool changes and saving auxiliary time;

Machining the outline of solid surface, according to the shape of the surface, the shape of the tool is like a ball column.

Effectively reducing the auxiliary time in processing,

That is, the frame instructions TRANS, ROT,

The value will not change until specified. FANUC system parameters

Processing program: n; Compare with that common machine tool processing method,

Delimiter chamfering is not allowed between d characters.

The machining center () T followed by the number (~) indicates the tool number.

Check whether the program action is correct.

First of all, the operator needs to have a comprehensive understanding of the operation of CNC machine tools.

Avoid using special fixtures to shorten the production preparation time.

DD stores the compensation value of TT tool, which is manually input by DI.

And try to keep the spindle screw guide rail of the working head machine tool,

In NC lathe machining, the amount of back-cutting is based on the workpiece of the machine tool.

Increasing the cutter speed or decreasing the cutter speed can reduce the vibration.

Determine the process sequence of parts processing;

Factors determining cutting speed:

Keywords standardized tool, indexable machine clamping cylindrical turning tool,

Check the errors in the above two steps. TD instruction in NC programming

The surface roughness of the inner hole is 0, which requires rough and finish machining.

This can reduce the positioning error of secondary clamping. Besides,

Does not mean that qualified products can be processed.

The two centers only center and support the workpiece,

When r is programmed as r and IJK, r is valid. Programming with t instruction,

At present, most advanced CNC machine tools are equipped with programming or simulating PC work.

The blade is wide, which is the same width as the workpiece groove; Keywords lathe thread, tool tip angle,

After the whole workpiece is processed, conduct a comprehensive inspection of the workpiece.

Working principle of electric control cabinet cooler and other units,

Keep a certain distance from the workpiece in all machining processes,

Lathe: () T followed by two digits, such as T, indicates the tool number stored in the library.

Note that the diameter/radius programming of the HNC/T system of Central China CNC Century Star adopts G/G code.

After finishing principle, determine the processing route as follows:

On the premise of ensuring machining quality, optimize cutting parameters,