Q:How big is the screw hole at the back of the torch chuck? Is it a rebound?

The bore of the torch chuck is a thread free bore with a degree of indentation. It is tight fit and not spinning!The drill chuck is in threaded buckle! Commonly used electric hand drill bit within 6 mm diameter 8 mm individual chuck Cocker!! 12-16 mm drill!The hole on the side of the chuck is the drill bit, the key, the axle hole, and no thread!

Q:How can the 1 millimeter drill be worn?

Less grinding, orifice in three edge or pentagon, look carefully, really half a certain degree of difficulty, teachers see the grinding action, do not blindly grinding, students often have yet to settle on the edge by grinding the start on the wheel, too large angle drill in drilling look, all kinds of grinding defects of twist drill. The students have not mastered the sharpening skills and techniques, according to the methods and skills of practice summed up in simple formulas form explanation and demonstration, students tend to understand, the other main blade drill was destroyed, is less grinding in better control of miss the point, size, angle of the diagram. Look calmly. And after sharpening the edge of the blade.

Q:How do we calculate the length of a drill for a bored pile drill?

Pile system refers to the construction site by mechanical drilling steel soil compaction or human mining method in the foundation pile hole in form, and placed in the steel cage, pouring concrete piles and made, in accordance with the different drilling method, grouting pile can be divided into cast-in-place pile, bored pile and digging pile and other types of. Bored pile is a kind of pile type defined according to the method of pile formation.

Q:What is a square hole drill and can be machined square hole?

You can drill through the square hole, but not once.

Q:Carbide drills and high speed steel drills, which are suitable for working stainless steel?

High cutting force and high cutting temperatureThis kind of material has high strength, large tangential stress and large plastic deformation during cutting, so it has great cutting force. In addition, the material has a poor thermal conductivity, which results in the increase of cutting temperature, and the high temperature often concentrates in the long and narrow area near the cutting edge of the tool, thus speeding up the tool wear.

Q:How to distinguish between electric hammer drill bit used

Four, five, six pit pit angle shank hammer respectively with four pits, five pits, six angle shank drill.The four can only handle four round hole hammer drill hole, the domestic side Bingsi pit with general electric hammer Bingsi pit bit, round handle can be fitted with but only occasionally use.

Q:What do you mean by 5 times diameter drill?

The meaning of 5 times diameter drill:Drill depth is 5 times the diameter of the drill bit.Double diameter refers to how many times the diameter of the meaning, mainly refers to the length of the drill bit and bore ratio, is to measure the function of the drill an important indicator, that is, the larger the diameter, the greater the depth of drilling.

Q:The difference between left and right drills used to drill holes

If the twist drill is said to be left-handed or right-handed, this is related to the direction of rotation of the spindle. Regular drilling machines use the right-hand bit; in some special cases, the main axis of the drilling machine rotates opposite, and the left-hand drill is required.

Q:CNC machine tools I use 6.5 bit drilling out is 6.7, what method can be solved?

Hello, pore diameter of drill cutting drill drill slightly is a normal phenomenon. Because the drill bit has a certain length, and a twist, when rotating due to circumferential force will produce slightly swinging, thus affecting the processing size.

Q:How much is an alloy drill bit?

Alloy bit generally refers to the hard alloy bit, divided into integral, welded, indexable inserts and removable head.The main components of cemented carbide are tungsten carbide, cobalt, etc., the hardness is relatively high, generally above HRC90 degrees, and it is suitable for batch processing and hard processing.