CN207841597U - Divide bits formula double flute carpenter's Straight spiral drill - Google Patents

Abstract

The utility model discloses one kind dividing bits formula double flute carpenter's Straight spiral drill, including drill body, the front end centre position of drill body is equipped with apex point, the rear end of drill body is connect with drillstock, it is characterized in that, the root of the apex point is respectively equipped at least two chisel edges about the centrosymmetric axial main cutting of drill body, is all provided with that there are one notch on per pass chisel edge.The utility model during drilling deep hole, morcel sawdust automatically, reduce wood pellet degree and increase drill body and hold bits amount, without exiting drilling frequently, shut down cleaning plug bits, it is smooth to reach drilling chip removal, can effectively accelerate construction progress, increase economic efficiency.

Description

Divide bits formula double flute carpenter's Straight spiral drill

Technical field

The utility model is related to one kind dividing bits formula double flute carpenter's Straight spiral drill, can be widely used in construction site timber mold mould Plate processing, the drilling processing on indoor and outdoor construction and decoration timber in drilling deep hole or other nonmetallic materials belong to carpenter and process and bore Has technical field.

Background technology

The drilling deep hole on timber generally uses carpenter's Straight spiral drill, presently used this kind of common carpenter's Straight spiral drill such as Fig. 1 institutes Show, drill body is equipped with one of helical form chip space, sets that there are one nail sheet Zhou Ren, an axial main cuttings in the front end of drill body Chisel edge and a cone from work(screw-type apex point.But due to because being placed restrictions on by drill bit drill body structure, meeting during drilling deep hole Encounter chip removal it is unsmooth, plug consider to be worth doing this unavoidable problem, using process need to exit frequently drilling, shut down clean up plug bits, Influence construction speed, deficiency in economic performance.

Invention content

The technical problems to be solved in the utility model is：Provide a kind of smooth drilling chip removal, raising construction speed, raising Economic benefit divides bits formula double flute carpenter's Straight spiral drill, and chip removal can be encountered not during drilling deep hole by solving common carpenter's Straight spiral drill Freely, the problem of plug bits.

In order to solve the above-mentioned technical problem, there is provided one kind to divide bits formula double flute carpenter straight for the technical solution of the utility model The front end centre position of twist bit, including drill body, drill body is equipped with apex point, and the rear end of drill body is connect with drillstock, which is characterized in that described The root of apex point be respectively equipped at least two chisel edges about the centrosymmetric axial main cutting of drill body, be all provided on per pass chisel edge There is notch.

Preferably, the apex point is cone from work(screw-type apex point.

Preferably, at least provided with one of notch on the chisel edge described in per pass.

Preferably, the notch on the chisel edge described in per pass is asymmetrically to each other about drill body center between each other.

Preferably, the drill body is equipped with spiral shape chip space, the quantity of spiral shape chip space and the quantity phase of chisel edge Together.

Preferably, the retaining part of the drillstock, which is equipped with, carries quick-changing type hexagonal handle bullet groove.

Preferably, the notch is set on the cutting edge of chisel edge.

The utility model during drilling deep hole, morcel sawdust automatically, reduce wood pellet degree and increase drill body and hold bits amount, Without exiting drilling frequently, shut down cleaning plug bits, it is smooth to reach drilling chip removal, can effectively accelerate construction progress, improve economic imitate Benefit.

Description of the drawings

Fig. 1 is the structural schematic diagram of common carpenter's Straight spiral drill；

Fig. 2 is a point structural schematic diagram for bits formula double flute carpenter's Straight spiral drill；

Fig. 3 is the A of Fig. 2 to position view；

Fig. 4 is the B of Fig. 2 to position view；

Fig. 5 is the partial enlarged view of I in Fig. 2.

Specific implementation mode

To make the utility model be clearer and more comprehensible, hereby with preferred embodiment, and attached drawing is coordinated to be described in detail below.

The utility model is that one kind dividing bits formula double flute carpenter's Straight spiral drill, as shown in Figure 2 comprising drill body 1, before drill body 1 Hold centre position be equipped with apex point 2, apex point 2 be cone from work(screw-type apex point, be equipped with from the root of work(screw-type apex point in cone Two chisel edges 3 about the centrosymmetric axial main cutting of drill body 1 can reduce axial cutting lay sawdust thickness, in per pass chisel edge 3 On be respectively provided with a notch 4, notch 4 is set on the cutting edge of chisel edge 3 and (has actually destroyed cutting edge purposely, prevented sawdust from shape The full wafer sawdust generated after being cut at chisel edge, plays the role of clast).The position of notch 4 can be scheduled on at the 1/3 of 3 width of chisel edge, It is counted on one side with 3 outer end of chisel edge, another side is counted with apex point root.Notch 4 on two chisel edges 3 is mutual about 1 center of drill body It is asymmetric.Notch 4 has the function of automatic point of bits, clast, and drilling is made to reach more brisk, more stable.Two spiral shells are equipped on drill body 1 Shape chip space 5 is revolved, can increase at training and hold bits, solid capacity.The rear end of drill body 1 connects drillstock 6, and band is arranged in the retaining part of drillstock 6 There is quick-changing type hexagonal handle bullet groove 7.Apex point 2 is set to the front end of drill body 1 with chisel edge 3.

When work, drillstock 6, with 7 clamping of quick-changing type hexagonal handle bullet groove electric hand drill, bench drill or other machinery drill points It in head or is inserted into Quick change hole-undercutting drill, so that the utility model is divided bits formula double flute carpenter Straight spiral drill and mechanical connection, and transmit Dynamic torque makes the utility model that bits formula double flute carpenter's Straight spiral drill be divided to rotate.Cone is drilled from the alignment of work(screw-type apex point Center, slightly axial compressive force make apex point 2 enter in material, screw in material from work(screw-type apex point with posterior pyramids, and drive drill bit To material movement, two symmetrically axial main cutting chisel edge 3 cut off axial and circumferential material fiber in material hole, fiber is along two Spiral shape chip space 5 be discharged, formed a circular hole, effectively can technically solve chip removal existing in the prior art it is unsmooth, Fill in bits problem.

Claims (7)

1. one kind divides bits formula double flute carpenter's Straight spiral drill, including drill body (1), the front end centre position of drill body (1) to be equipped with apex point (2), The rear end of drill body (1) is connect with drillstock (6), which is characterized in that the root of the apex point (2) be respectively equipped at least two about The chisel edge (3) of the centrosymmetric axial main cutting of drill body (1) is equipped with notch (4) on per pass chisel edge (3).

2. one kind as described in claim 1 divides bits formula double flute carpenter's Straight spiral drill, which is characterized in that the apex point (2) is cone Body is from work(screw-type apex point.

3. one kind as described in claim 1 divides bits formula double flute carpenter's Straight spiral drill, which is characterized in that the chisel edge (3) described in per pass On at least provided with one of notch (4).

4. one kind as described in claim 1 or 3 divides bits formula double flute carpenter's Straight spiral drill, which is characterized in that the chisel edge described in per pass (3) notch (4) on is asymmetrically to each other about drill body (1) center between each other.

5. one kind as described in claim 1 divides bits formula double flute carpenter's Straight spiral drill, which is characterized in that set on the drill body (1) There are spiral shape chip space (5), the quantity of spiral shape chip space (5) identical as the quantity of chisel edge (3).

6. one kind as described in claim 1 divides bits formula double flute carpenter's Straight spiral drill, which is characterized in that the folder of the drillstock (6) Position is held to be equipped with quick-changing type hexagonal handle bullet groove (7).

7. one kind as described in claim 1 divides bits formula double flute carpenter's Straight spiral drill, which is characterized in that the notch (4) is set to On the cutting edge of chisel edge (3).