CNC Knowledge: 10 problems and current solutions for the treatment of deep holes

During the treatment of deep holes, problems such as dimensional precision, surface quality and the lifespan of treated parts often occur.

1. Increased warning and big error

1) cause

The design value of the outside diameter of the re -assessor is too large or there are burrs on the edge of the skin of the damp; The realer is too large; The response rod is not suffered or the surface of the conical is damaged; is not floating in a flexible way;

2) Solutions

Reduce the outside diameter of the re -assessor according to the specific situation; To be qualified; and use oil and stone to repair the surface of the cone when there is a bump; Growing the flat tail of the bore;

2. Reduced Awestern

1) cause

The design value of the outside diameter of the re -assessor is too small; The bore is not worn during sharpening, and elasticity is restored to ensure that the diameter of the hole is reduced; The size of the opening and the interior holes are not round and the size of the opening is not qualified.

2) Solutions

Replace the outside diameter of the re -assessor; When the size of the tool, the above factors must be taken into account or the value must be taken according to the actual situation;

3. The inner hole which is non -circular

1) cause

Reamer is too long and has insufficient rigidity, which causes vibrations during the angle of the main deviation of the angle of deviation of the re -evaluator; hole surface; There are sand holes and air holes on the surface of the hole; in tightening the part with thin walls.

2) Solutions

Aleésus with insufficient rigidity can use bores with different steps. Adopt a longer and more precise guidance sleeve; The tightening method is to reduce the tightening force.

4. There is obvious edges on the inner surface of the hole

1) cause

The reduction allowance is too large;

2) Solutions

Reduce the reduction allowance

5. Value of high surface roughness of the inner hole

1) cause

The cutting speed is too high; or too small, and the local surface has not been extended; The difference in the sliding of the cup part of the re -evaluator is too different, the edge is not lively and the surface is rough; The discharge is not smooth during the bore; degree of anterior angle or negative anterior angle.

2) Solutions

Reduce cutting speed; Select the cutting fluid according to the treatment material; Correctly reduce the deviation angle and correctly affine the edge of the hinge; Ramage or increase in the margin of altitude hole; The Alésus regularly have them and the crushes when implementing the cutting area; Reamours knife; Garnish with oil and stone until it is qualified, and use a bore with a 5 & deg front angle; -10 & deg;.

6. The life of the Reamer is low

1) cause

The material of the bore is not suitable;

2) Solutions

Select the re -evaluation material depending on the treatment material and use a carbide or magazine dumps; And use enough pressure cutting fluid, after grinding or fine grinding, meets the requirements.

7. Extremely bad precision of the hole position

1) cause

The guidance round is used;

2) Solutions

Regularly replace the guide sleeve;

8. collapse the remedy teeth

1) cause

The reduction allowance is too large; The hardness of the room material is too high; Width; When the altitude hole is a deep or blind hole, there are too many shavings and the teeth have been broken when they are not removed in time and when sharpening.

2) Solutions

Modify the size of pre-grease pores; Blade’s encouragement re -mining;

9. The rowing handle is broken

1) cause

The reduction allowance is too large;

2) Solutions

Modify the size of the pre-grease pores; Change the margin allowance and select the quantity of cut;

10. The midline of the hole after the bore is not straight

1) cause

The drilling hole before the bore is deflected, in particular the diameter of the hole is small, because the re -evaluator is poorly rigid, the original flexion cannot be corrected; . At one end, destroying the perpendicularity of the bore.

2) Solutions

Add holes correction holes to the bore or disturbance process;