CNC Knowledge: CNC | The drilling steps summarize to improve the precision of the drill!

1. The basic drill concept

In normal circumstances, drilling refers to a method of processing exercises on the indication of the product. In general, when drilling the drilling of the product on the drilling machine, the drilling head must be completed in two movements:

① The main movement, that is to say the movement of rotation of the drilling head around the axis (cutting movement);

② Secondary movement, that is to say the bitter forest moves to the straight line of the room along the axis.

During drilling, because there are drawbacks in the drilling structure, the marks will be left for the place where product treatment is treated, affecting the quality of the part processing, and the treatment accuracy is generally lower than It10. 5 μm.

Second, the drilling operation process

　　1

Before drilling, you first understand the graphic requirements.

　　2 Check the checked square or check the circle

After passing the line and verified, you must pull the square or the inspection circle with the median line of the hole as a symmetrical center.

　3 tests

Attentive samples must be sampled after drawing the corresponding inspection squares or the inspection. Choose a small point first, measure several times in different directions of the cross central line.

4 loaded clip

Use a cloth to wipe the tablet, the luminaire surface and the reference surface of the room, then tighten the room, and the tightening is flat and reliable as required, and it is practical to question and measure at any time . Pay attention to the part installation method to prevent the room deformation part due to the luminaire.

　　5 Test forest

Before formal drilling, you must try to pierce: the horizontal blade of the drill head is aimed at a shallow pit with a eye in the center of the hole, then the position of the shallow pit is correct, and the pit little deep and inspection of the same tree is required. If you violate the little ones, you can force the room to move in the opposite direction in the opposite direction of violations together and reach the progressive pair.

　　6 drilling holes

The drilling of the machine is generally the main operation of the manual input. When manual entry, the power force should not bend the forest and avoid distorting the axis of the hole.

Third, the way of drilling higher precision

　　1 blade crushing a forest is the beginning of everything

You must choose the corresponding drill bit before drilling. In addition to the precise maintenance of the upper angle, the rear area and the horizontal blade of the drill with the blade, the two main cutting blades are flat and symmetrical with the midline of the drill and the two rear knives main are smooth. , Corresponding to the horizontal blade and the main cutting blade for the appropriate grinding (it is preferable to grind it on the sand machine first, then to refine it on the oil and the stones).

　2 specific lines are the foundation

The precise line of the height is precise and the standards must be precise. clear and uniform.

Pay attention to the selection of the reference surface, the reference surface must be precise and to ensure its own plan and vertical degree with the adjacent surface. Once the hole holes are extracted, to make sure it is easy to find during borehole, use the center to precipitate the central point on the transverse line (the point of precipitation is small, the position must be precise).

　　3 Put the pliers correctly is the key

In normal circumstances, if the holes with a diameter less than 6 mm, if the accuracy is not high, you can tighten the part with your hand pliers for the drilling of the holes. , you can use flat mouthpieces The surface is perpendicular to the main axis of the drill. When a hole with a large diameter diameter, the claw with the flat mouth must be fixed with a bolt plate;

　　4 The precise discovery is the key

The room is over, do not rush to fall into the drill, you should first find it.

Looking for a positive static static to find positive and dynamic. STATIC STATIC Justice means that before the launch of the drilling machine, the midline of the main axis of the borehole is positive with the crossing line of the room. . The dynamic discovery is just after the start of the drilling machine.

　　5 meticulous detection cannot be less

Detection can discover with precision and timely time the accuracy of the holes so that the necessary measures can be used for compensation.

For holes with high diamond precision, we usually use processes of drilling, expansion and recruited holes. After piercing the small hole in the first step, use a rod to detect the center of the hole lower than the negative shift of the reference surface. Increase the upper angle of the drill correctly, weaken automatic consciousness, properly promote the part in the positive direction and gradually increases the diameter of the diameter of the drill. If the amount of overlap is more than 0.10 mm, the matching round knife can be cut on the two walls on both sides of the bottom hole.