CNC machine tool processing thread, CNC lathe thread processing method?

1. Check whether the encoder is faulty, whether the belt is loose, or whether the spindle is faulty, whether the speed of the spindle or Z-axis is too slow, or the mechanical adjustment is not suitable, and check the connection between the Z-axis motor and the lead screw.

2. Thread cutting is divided into single-stroke thread cutting, simple thread cycle and thread cutting compound cycle.

1) Single-stroke thread cutting G3Z

The G32 command can perform single-stroke thread cutting, and the feed movement of the turning tool is strictly based on the thread lead of the box. However, the cutting in, cutting out, and returning of the turning tool all need to be programmed. The command format is:

g32 x(u) _z(w) _f___

where f is the threaded lead. The bevel angle of the taper thread (Fig. 4-39). The thread lead is specified in the z-axis direction below 45' and in the x-axis direction above 45 to 90. This directive is generally rarely used.

b) Thread cutting cycle G92

1 G92 instruction format;

The thread cutting cycle G92 is a simple thread cycle, and the instruction can cut the cone thread and the cylindrical thread, and its cycle route is basically the same as the single-shape fixed cycle mentioned above, except that the feed at the back of F can be changed to the pitch value, and the instruction format is.

g92 x(u) _z(w) _i___f___

x and z are the coordinate values of the end point of the thread (point c); u. is the incremental coordinate of the end of the thread relative to the start of the thread; i is the difference in radius between the start and end points of the cone thread. When machining cylindrical threads, i is zero and can be omitted.

c) Thread cutting composite cycle G76

Command format: g76x(u) z(w) i k d f a

where the meaning of x, z, u, w, i is the same as in g92, k is the thread tooth height (radius value), which is usually a positive value; d is the amount of back eating knife (radius value) for the first feed, which is usually a positive value. f. Command thread lead; a is the thread tooth angle.

First check the spindle and spindle encoder to see if the belt is too loose or the encoder is faulty. Then try the large point of the Z-axis stroke setting, it seems that the speed of the spindle or Z-axis starts too slowly, or the mechanical adjustment is not suitable. If the spindle is fine, check the connection between the lower Z-axis motor and the lead screw.

It's the same as an ordinary thread, except that there must be a retract groove at the starting point, otherwise it will hit the tool.

CNC lathe: CNC lathe processing is a high-precision, high-efficiency automatic machine tool with digital information to control the displacement of parts and tools. It is an effective way to solve the problems of changeable varieties, small batches, complex shapes and high precision of aerospace product parts and realize efficient and automated processing.

1. The main machine, he is the subject of CNC machine tools, including machine tool body, column, spindle, feed mechanism and other mechanical components. He is a mechanical component used to complete various cutting operations.

2. The numerical control device is the core of the CNC machine tool, including hardware (printed circuit board, CRT display, key box, paper tape reader, etc.) and corresponding software, which is used to input the digital part program, and complete the storage of input information, the transformation of data, the interpolation operation and the realization of various control functions.

3. The driving device is the driving component of the actuator of the CNC machine tool, including the spindle drive unit, the feed unit, the spindle motor and the feed motor. He implements the spindle and feed drive by means of an electrical or electro-hydraulic servo system under the control of a numerical control unit. When several feeds are linked, positioning, straight lines, plane curves and spatial curves can be processed.

4. Auxiliary devices, some necessary supporting components of the index control machine tool to ensure the operation of the CNC machine tool, such as cooling, chip removal, lubrication, lighting, monitoring, etc. It includes hydraulic and pneumatic devices, chip removal devices, exchange tables, CNC turntables and CNC indexing heads, as well as tools and monitoring and testing devices.

5. Programming and other ancillary equipment can be used to program and store parts outside the machine.

The superalloy GH4169 is used as the experimental material, which has the advantages of high strength, good corrosion resistance and strong thermal stability, and is a widely used component material in the field of aviation and aerospace, with a specimen size of 4 96 30mm.

1) Machine tools and measuring equipment: machine tools (DMGultraSonic20linear five-axis machining center), force tester (KISTLER9265B dynamic force tester).

2) Tool material: Tungsten carbide integral three-tooth thread milling cutter (TIALCN coating, helix angle 15°) is selected.

Car end face thread program programming.

G92 or G32 will do.

For example, G92 ......