HSSdrill is a tool for machining holes from solid materials, and it is also the most widely used tool in hole machining tools. Twist drilling is a tool for drilling round holes in the workpiece through the rotational cutting of its relative fixed axis. It is named because the chip groove is spiral and looks like twist. Spiral grooves have 2 slots, 3 slots or more slots, but 2 slots are the most common. Mahua drills can be clamped on manual and electric hand twist drilling tools or drilling machines, milling machines, lathes and even machining centers. Drill bit materials are generally highspeed tool steel or cemented carbide. At present, twist drill is widely used in automobile manufacturing, logistics, molds, machinery and other departments.Due to its wider application in all aspects, the application requirements have also increased
What's the difference between a twist drill and a vertical milling cutter? How to choose it?
Twist drilling is a tool for drilling round holes in the workpiece through the rotational cutting of its relative fixed axis. It is named because the chip groove is spiral and looks like twist. The main cutting edge of the vertical milling cutter is on the cylindrical surface, and the cutting edge on the end surface is the secondary cutting edge. An end milling cutter without a central edge cannot feed along the axial direction of the milling cutter. According to national standards, the diameter of the vertical milling cutter is 2-50 mm, which can be divided into thick teeth and fine teeth. The diameter is 2-20 in the straight handle range, and the diameter is 14-50 in the conical handle range.
Use and classification of straight-handled twist drill?
The black twist drill is relatively sharp. It is used to drill wood and metal. That is, the silver impact drill bit of woodworking drill is relatively blunt. It is used to drill holes in cement and brick walls, that is, construction drills. When drilling, the electric drill should be adjusted to the impact function.
What's the difference between alloy bit and twist drill?
The alloy bit means that the drill bit material is made of carbide (such as tungsten alloy steel), which indicates the material of the drill bit; the twist drill indicates that the shape of the drill bit is twisted like twist, and she wants to indicate the shape of the drill bit. By the way, most commonly used bits are twisted diamonds, but they are not necessarily alloy.
What is the reason for the continuous cutting of twist drilling?
The angle of attack of the drill bit blade does not match the material of the workpiece, which cannot solve the problem of twist drill (the angle of attack of the edge of the twist drill bit is not adjustable). When drilling, the drilling chips are constantly related to the nature of the material drilled. Generally, soft and sticky materials will not break the chips by themselves when drilling. It is necessary to often raise the drill bit to clear it. Lising drilling chips to prevent drill bits from being entangled too much in drilling chips and affecting the removal of chips.
Which corner is the front corner of the twist drill?
The front angle (i.e. the top angle) of the standard twist drill is 120°±2°. The cross-edged bevel of the standard twist drill is about 50°-55°. The front angle on the cross blade is -50°~-60°. The spiral angle of the standard twist drill is 18°-38°. The front angle is about 30°, and it is about -30° near the cross blade. The back angle α at the outer circle of the twist drill is usually 8°-10°, and the back angle at the cross edge is 20°-25°.
What machine tool is processed for twist drill head?
The head of the twist drill is processed by a milling machine. Mahua drill is a tool for machining holes from solid materials, and it is also the most widely used tool in hole machining tools. Twist drilling is a tool for drilling round holes in the workpiece through the rotational cutting of its relative fixed axis. It is named because the chip groove is spiral and looks like twist. Spiral grooves have 2 slots, 3 slots or more slots, but 2 slots are the most common. Mahua drills can be clamped on manual and electric hand twist drilling tools or drilling machines, milling machines, lathes and even machining centers. Drill bit materials are generally high-speed tool steel or cemented carbide.
