阅读说明：本技术 一种单刃螺旋深孔钻 (Single-edge spiral deep hole drill ) 是由 张英芹 于 2018-06-04 设计创作，主要内容包括：本发明涉及一种单刃螺旋深孔钻,包括钻身、设置在钻身一端端部的钻尖,以及设置在钻身相对另一端端部的刀柄；所述钻身与刀柄之间设置有一过渡部,在刀柄上还设置有用于连接钻孔设备的连接部；所述钻尖的直径大于钻身的直径。本发明的钻身部分的排屑槽形状为变径螺旋状,使得钻身有较好强度的同时,又不影响排屑功能,更好地应对微型深孔的加工,避免了钻头频繁损坏,降低了生产成本。另一方面,钻尖直径大于钻身,使得钻身在钻孔过程中不与工件接触,减少了钻头整体与工件之间的摩擦,降低了加工过程的发热量。(The invention relates to a single-edge spiral deep hole drill which comprises a drill body, a drill tip arranged at one end part of the drill body and a cutter handle arranged at the opposite end part of the drill body; a transition part is arranged between the drill body and the tool shank, and a connecting part for connecting drilling equipment is also arranged on the tool shank; the diameter of the drill tip is larger than that of the drill body. The chip removal groove of the drill body part is in a reducing spiral shape, so that the drill body has better strength, the chip removal function is not influenced, the micro deep hole machining is better met, the drill bit is prevented from being frequently damaged, and the production cost is reduced. On the other hand, the diameter of the drill tip is larger than that of the drill body, so that the drill body is not contacted with a workpiece in the drilling process, the friction between the whole drill bit and the workpiece is reduced, and the heating value in the machining process is reduced.)

1. A single-edge spiral deep hole drill is characterized by comprising a drill body (1), a drill tip (2) arranged at one end part of the drill body and a cutter handle (3) arranged at the end part of the drill body opposite to the other end part; a transition part (4) is arranged between the drill body (1) and the cutter handle (3), and a connecting part (5) for connecting drilling equipment is also arranged on the cutter handle (3); the diameter of the drill tip (2) is larger than that of the drill body (1); the drill point (2) is a single-edge drill point, and a spiral first chip removal groove (21) is formed in the drill point; the outer surface of the drill body (1) is provided with a spiral second chip groove (11).

2. Single-edged screw gun according to claim 1, characterized in that the length of the shank (1) is 15-25 times the diameter of the shank.

3. Single-edge screw gun according to claim 2, characterized in that the length of the shank (1) is 20 times the shank diameter.

4. Single-edged screw gun according to claim 1, characterized in that the diameter of the drill tip (2) is 0.01-0.2mm larger than the diameter of the drill body (1).

5. Single-edged screw gun according to claim 4, characterized in that the diameter of the drill tip (2) is 0.05mm larger than the diameter of the drill body (1).

6. Single-edged helical deep hole drill according to claim 1, characterized in that the first chip flute (21) and the second chip flute (11) are of variable-diameter helical shape.

7. Single-edged screw gun according to claim 6, characterized in that the cross-sectional shape of the transition (5) is isosceles trapezoid.

Technical Field

The invention relates to the field of mechanical drilling processing, in particular to a single-edge spiral deep hole drill.

Background

The drill is a special tool for processing a hole on the surface of a workpiece, the drill performs a cutting function by a head part, and a cutting edge part and a chisel edge of the drill function as cutters. The shape of the cutting edge part of the drill bit is designed according to the required outline of the hole, the required hole can be processed only by one-time drilling operation, the operation is simple, the efficiency is high, and the types of the drill bit mainly comprise a twist drill, a center drill, a deep hole drill, a reamer and the like. Wherein, the deep hole drill is a drill bit specially used for processing deep holes. Holes with a hole depth to hole diameter ratio greater than 6 are commonly referred to as deep holes in machining. Chip removal and heat dissipation are difficult in the deep hole machining process, and other devices are needed to help chip removal and heat dissipation during machining. Meanwhile, a deep hole drill for machining fine deep holes is long and thin in size, poor in rigidity and strength and prone to bending and breaking, and therefore the drill bit needs to be frequently replaced in the machining process.

Disclosure of Invention

In order to solve the problems, the invention provides the single-edge spiral deep hole drill which has better strength and rigidity and can discharge chips at the same time.

The invention is realized by adopting the following scheme:

A single-edge spiral deep hole drill comprises a drill body, a drill tip arranged at one end of the drill body and a cutter handle arranged at the end of the opposite end of the drill body; a transition part is arranged between the drill body and the tool shank, and a connecting part for connecting drilling equipment is also arranged on the tool shank; the diameter of the drill tip is larger than that of the drill body; the drill point is a single-edge drill point, and a spiral first chip removal groove is formed in the drill point; the outer surface of the drill body is provided with a spiral second chip groove.

Further, the length of the drill body is 15-25 times of the diameter of the drill body.

Further, the length of the drill body is 20 times of the diameter of the drill body.

Furthermore, the diameter of the drill tip is 0.01-0.2mm larger than that of the drill body.

Further, the diameter of the drill point is 0.05mm larger than that of the drill body.

Furthermore, the first chip groove and the second chip groove are in a reducing spiral shape.

Further, the cross-sectional shape of transition portion is isosceles trapezoid.

Compared with the prior art, the invention has the following beneficial effects:

The chip removal groove of the drill body part is in a reducing spiral shape, so that the drill body has better strength, the chip removal function is not influenced, the micro deep hole machining is better met, the drill bit is prevented from being frequently damaged, and the production cost is reduced. On the other hand, the diameter of the drill bit is larger than that of the drill body, so that the drill body is not contacted with a workpiece in the drilling process, the friction between the whole drill bit and the workpiece is reduced, and the heating value in the machining process is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a single-blade spiral deep hole drill provided by the present invention.

fig. 2 is an enlarged view of a portion a in fig. 1.

Detailed Description

To facilitate an understanding of the present invention for those skilled in the art, the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.

The invention provides a single-edge spiral deep hole drill which comprises a drill body 1, a drill tip 2 arranged at one end part of the drill body and a cutter handle 3 arranged at the end part of the drill body 1 opposite to the other end part. A transition part 4 is arranged between the drill body 1 and the tool shank 3, and a connecting part 5 for connecting drilling equipment is also arranged on the tool shank 3. Wherein, the cross-sectional shape of transition portion 5 is isosceles trapezoid.

The diameter of the drill point 2 is larger than that of the drill body 1, and the drill point 2 is a single-edge drill point. A first helical flute 21 is provided on the drill tip, and a second helical flute 11 is provided on the outer surface of the drill body 1. In the embodiment, the first chip removal groove and the second chip removal groove are in reducing spiral shapes, so that the drill body has better strength and does not influence the chip removal function.

The length of the drill body 1 is 15-25 times of the diameter thereof, and the length of the drill body in the embodiment is 20 times of the diameter thereof, and the specific implementation can be any value between 15-25 times. The diameter of the drill tip 2 is 0.01-0.2mm larger than that of the drill body 1, and in this embodiment, the diameter of the drill tip is 0.05mm larger than that of the drill body, and in the specific implementation, the diameter can be any value between 0.01-0.2 mm.

The chip removal groove of the drill body part is in a reducing spiral shape, so that the drill body has better strength, the chip removal function is not influenced, the micro deep hole machining is better met, the drill bit is prevented from being frequently damaged, and the production cost is reduced. On the other hand, the diameter of the drill bit is larger than that of the drill body, so that the drill body is not contacted with a workpiece in the drilling process, the friction between the whole drill bit and the workpiece is reduced, and the heating value in the machining process is reduced.

According to the invention, the hard alloy blade is connected to the cutter head through welding, so that the performance of the drill bit is ensured, and the usage amount of hard alloy is reduced, thereby reducing the production cost. On the other hand, the through hole between the cutter body and the cutter head reduces the contact area between the drill bit and a processed workpiece, reduces cutting amount, improves drilling speed, and is beneficial to chip removal in the drilling process due to the groove arranged on the outer peripheral surface of the cutter head.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the scope of the included claims.