Q:How can the 1 millimeter drill be worn?

The "cutting edge" here is the main cutting edge, and students often turn the top and bottom of the mill into "up and down" when they are grinding. The workers who have been working for more than ten years have been working for more than ten years." This action is also important in the sharpening of the drill, and confidence determines power. When drilling. To master the methods, repeatedly "less grinding" test drilling and the appropriate grinding on the horizontal edge, chip is normal, this is very important, must let students stand in automatic hand grinder, is reading books on the knowledge, otherwise it will make the blade blunt, more understanding. The common standard twist drills only have two main flank surfaces, a grinding edge, a transverse edge, an oblique angle, and two main cutting lengths. In a stable consolidation formula, grinding twist drill is also a lot of bad. Students will find that sharpening a certified standard twist drill is not difficult and much more analytical. To remind students to remember a commonly used piece of 30 degrees." This is the slow grinding of the entire flank from the edge of the bit. A formula and formula two refers to the relative position of the grinding before, to adjust the size of the pressure. You can use a large angle bit and another small angle drill students in the test bench drill drill, the drill bit in drilling process of quick cutting, students can quickly grasp the right edge of the twist drill grinding method, 60 degree students, easy to master. It is easy to dissipate heat and grind. After mastering the methods and techniques, but after sharpening, you must ensure the vertex angle

Q:What chisel drills are used for building water utilities?

Professional water electrician's approach is to draw a good line, and then cut the thread by wire cutting, and finally hit the groove. This way the groove is standard and small to the wall.

Q:1 inches of steel plate, what drill can drill through?

Mainly used in drilling machines, lathes, flashlights and other mechanical equipment for the processing of different diameter aperture. Generally speaking, twist drills are straight shank and taper shank twist drills. Straight shank drill: suitable for drilling diameter psi below 13.0mm small diameter, taper shank twist drill for aperture and torque big hole.

Q:What are the brands of homemade twist drills?

Twist drills are made of many different materials, and different materials have different hardness. The angle or just ordinary relatively low hardness, so in theory, as long as the geometric angle of precise angle quasi good drill, only poor material life is low. Because of this, so many people like fraudulent use of materials, or connecting the handle with other materials, the head good. But now there is a process called roast yellow, this process after the connection part of the defect, a look at it.

Q:What kind of drilling bit is good for stainless steel?

This depends on the size of your drill, a lot of false open a hole is useless, there are special stainless steel drilling bit, do not buy fake Oh!

Q:How big expansion screw does the 6mm bit have?

Expansion screw generally refers to the metal expansion screws, expansion screws fixed, but the use of wedge slope to promote expansion, friction, grip force, to achieve fixed effect. One end of the screw is threaded, and the other has taper. Outside the bread (some tin pipe), iron cylinder (steel tube) has several half incision, put them together into the wall lay the hole, then the lock nut, the nut screw pull, pull cylinder taper iron, iron cylinder is open up, so tightly fixed on the wall, generally used for protection bar, awning, air conditioning and other fastening in the cement, bricks and other materials. But its fixed is not very reliable, if the load has a larger vibration, may be loose, so it is not recommended for the installation of ceiling fans.

Q:What measures can be taken to prevent the bit from breaking?

In drilling, the pressure must not be too great for the drilling hole to avoid breaking the bit.

Q:The installation method of the electric hammer drill

General electric hammer head has a jacket, when the machine is running it is moving along, you put up this set of hammer drop down, then put the drill insert, loosen the coat. There are four grooves on the drill bit, and there are small steel balls in the coat to hold the drill bit

Q:What drill is drilled on marble?

Carbide drills can also be applied to marble, ceramic tile, glass and other openings. To drill gear to non hammer gear, slowly drilling, drilling position should not be too on the marble edge, the method is applicable to the local small aperture.

Q:Tap 10 taps, what size drills do we use?

In general, with nominal diameter equal to the diameter of the bottom hole pitch reduction. 10-1.5=8.5, that's 8.5. However, if the quarterly demand is high, follow the formula below:D1=d-5H/8 H=0.866p:D1-- drilling diameterD - thread diameterH - theoretical height of threaded teethP - pitch