According to the length of the workpiece, the deep-hole drilling and boring machine chooses two kinds of artistic products of the workpiece: oil-immersed short stories. Oil and hydraulic jacking; The long workpiece at the tail of boring bar is fed with oil, and the four-jaw chuck. The oil inlet device of deep hole drilling and boring machine adopts innovative spindle structure, which greatly improves the performance of bearing and has higher rotation accuracy. Double rectangular guide rail bed is suitable for deep hole machining machine tools, with large bearing capacity and high guiding accuracy; After quenching, the rail has high wear resistance. Suitable for rolling processing in machine tools, ships, locomotives, coal machines, hydraulic, mechanical, boring, pneumatic and other mechanical industries. 0.4 ~ 0.8 μ This series of deep-hole drilling and boring machines can choose the following working forms according to the surface roughness of the workpiece: 1, workpiece rotation, self-rotation and reciprocating motion; 2, the workpiece rotates, and the rotary cutter not only reciprocates; 3. The workpiece does not rotate, but rotates and feeds back and forth ~ ~ ~

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1 belongs to the special deep hole machining tool for external chip removal. The v-shaped angle is 120.

2. Special machine tool for gun drilling.

3. The cooling and chip removal mode is high-pressure oil cooling system.

4. There are common cemented carbide and coated cutter heads.

Deep hole drill:

1 belongs to the special deep hole machining tool for external chip removal. The v-shaped angle is 160.

2. Deep hole drilling system is special.

3. The cooling and chip removal mode is pulse high pressure fog cooling.

4. There are common cemented carbide and coated cutter heads.

Gun drill is an effective tool for deep hole machining, which covers a wide range, from die steel, glass fiber, Teflon and other plastics to high-strength alloys (such as P20 and Inconel). In deep hole machining with strict tolerance and surface roughness, gun drill can ensure the dimensional accuracy, position accuracy and straightness of the hole.

In order to make the gun drill process deep holes to achieve satisfactory results, it is necessary to master the performance of the gun drill system (including tools, machine tools, fixtures, accessories, workpieces, control units, coolant and operating procedures). The technical level of the operator is also very important. According to the structure of the workpiece and the hardness of the workpiece material, as well as the working conditions and quality requirements of the deep hole machining machine tool, only by selecting appropriate cutting speed, feed speed, tool geometric parameters, cemented carbide brand and coolant parameters can excellent machining performance be obtained.

In production, the straight slot gun drill is the most commonly used. According to the diameter of the gun drill and the situation that it passes through the transmission part, the handle and the cooling hole in the cutter head, the gun drill can be made into two types: integral and welded. Its cooling liquid is sprayed from a small hole on the side. The gun drill can have one or two circular cooling holes or a waist hole.

The standard gun drill can process holes with the aperture of 1.5mm to 76.2mm, and the drilling depth can reach 100 times of the diameter. Although the feed per revolution of gun drill is low, its feed per minute is greater than that of twist drill (the feed per minute is equal to the feed per revolution multiplied by the rotation speed of tool or workpiece).

Because the tool bit is made of cemented carbide, the cutting speed of gun drill is much higher than that of high speed steel bit. This can increase the feed speed of the gun drill per minute. In addition, when high-pressure coolant is used, its chips can be effectively discharged from the hole to be machined, and it is not necessary to retract the tool periodically to discharge chips during drilling.