CN2062663U

CN2062663U - Drill with anti-slip cylindrical handle

Info

Publication number: CN2062663U
Application number: CN 89221825
Authority: CN
Inventors: 殷文忠
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-12-27
Filing date: 1989-12-27
Publication date: 1990-09-26

Abstract

The utility model relates to a drill with an anti-slip cylindrical handle. One to three protuberances are arranged on the handle of the original drill. The included angle of each two protuberances is 120 DEG. The cylindrical handle clamp of the drill with an anti-slip cylindrical handle is in a drill chuck in using, and the protuberances are in the interstices among the claws of the drill chuck. The drill can transfer larger torque, and can avoid the phenomena of the slip of the drill chuck and the drill frequently generating in the drilling. Consequently, the service life of the drill and the drill chuck is extended, the drilling quality is ensured, and the drilling labor productivity is raised.

Description

Drill with anti-slip cylindrical handle

The utility model belongs to the improvement of machining with drill bit.

At present, the machining of market supply is made up of operate portions and shank mostly with drill bit.Operate portions is by cutting tip and targeting part combination.Shank varies in size according to bit diameter and is divided into two kinds of taper shank and garden post handles, and diameter adopts taper shank mostly greater than the drill bit of φ 13, and diameter is that φ 13 and following drill bit thereof adopt garden post handle mostly.Taper-shank drill and drilling machine with tapered sleeve be used, garden post handle drill bit is by the drill chuck that is installed on the drilling machine drill bit clamp to be used.In drilling process, if cutting output is excessive, perhaps drill chuck does not clamp, and garden post handle drill bit all can skid in drill chuck, not only influences the drilling quality, tends to quicken the rapid uneven wear of drill handle part, thereby causes drill bit to scrap.Sometimes also can damage drill chuck.Now, the phenomenon that this drill bit skids in drill chuck takes place through regular meeting in the drill bit of φ 4 to φ 13 when carrying out drilling.

The purpose of this utility model provides a kind of simple in structure, easy for installation on drill chuck, during use and drill chuck be difficult for the garden post handle drill bit skid.

The technical solution of the utility model is: on the garden post handle drill bit of being made up of operate portions (1) and shank (2), particularly on the garden post handle side face of φ 4 to φ 13 drill bits, produce 1 to 3 thrust (3), the angle of thrust (3) is 120 ° in twos.Thrust (3) can be the garden post, also can be rectangular, also can be the projection rib of other shape (triangle etc.).During use, the garden post spindle clamp of anti-slip garden post handle drill bit is in drill chuck, and 3 (or 1,2) thrusts are between gap between drill chuck three claws (5).

Advantage of the present utility model is, traditional drill bit has only been increased by 1 to 3 thrust that prevents to skid on the post handle of garden, and in the time of just can avoiding drilling, the relative drill chuck of drill bit skids, and has prolonged the service life of drill bit and drill chuck, has guaranteed the drilling quality.

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1 is the structure front view of anti-slip garden post handle drill bit.

Fig. 2 is the A-A cutaway view of Fig. 1.Fig. 3 is an anti-slip drill bit scheme of installation.

In the accompanying drawing 1 is operate portions, the 2nd, and garden post handle, the 3rd, thrust, the 4th, drill chuck, the 5th, claw.

Embodiment: at the shank of garden post handle twist drill, solid welding the thrust of 1 Cylinder, just constituted the anti-slip fluted drill.The anti-slip fluted drill is clamped in the drill chuck, makes the Cylinder thrust of shank place between the gap of wantonly two claws of three claws of drill chuck, tighten drill chuck.Usually, the moment of torsion during drilling is to transmit by the friction that drill chuck and drill bit are held between shank.When the increase of drilling amount, resistive torque increases, and when having surpassed rub-moment, has just caused skidding between drill bit and drill chuck, can damage drill bit and drill chuck.The shank of drill bit has had the non-slip process Cylinder, and its (projection) can pass to drill bit with the moment of torsion on the drill chuck as key, when guaranteeing drilling, can overcome bigger resistive torque.

Embodiment 2: on the shank side face of garden post handle twist drill, and uniform three rectangular thrust, between three rectangular, angle is 120 ° in twos, installs and uses with embodiment 1.

Claims

1, a kind of anti-slip garden post handle drill bit of being made up of operate portions (cutting tip and targeting part) and shank is characterized in that on the side face of garden post handle of drill bit 1 to 3 thrust being arranged, and the thrust angle is 120 ° in twos.

2, according to the described anti-slip of claim 1 garden post handle drill bit, the shape that it is characterized in that thrust is the projection rib of garden post, rectangular or other shape (triangle etc.).