CN205464481U

CN205464481U - High strength spiral bit

Info

Publication number: CN205464481U
Application number: CN201620191925.3U
Authority: CN
Inventors: 朱小坤; 徐文瑛; 马志俊
Original assignee: Jiangsu Tiangong Tools Co Ltd
Current assignee: Jiangsu Tiangong Tools Co Ltd
Priority date: 2016-03-14
Filing date: 2016-03-14
Publication date: 2016-08-17
Anticipated expiration: 2026-03-14

Abstract

High strength spiral bit, it relates to cutting process technical field, it contains stalk portion, neck, the spiral bit body, drilling head, guide part, the stalk portion be connected with the neck, neck and spiral bit body coupling, the one end of the spiral bit body is provided with the drilling head, is connected with the guide part on the drilling head, the guide part be cylindric, the diameter of guide part be d, the length of guide part is L, the diameter of the spiral bit body is D, and dD is 0.25~0.5, ld is 0.3~1. High strength spiral bit, improved mechanical properties, processing performance, cutter wearability, the utility model has the advantages of simple structure, set up reasonable, the cost of manufacture low.

Description

High intensity spiral bit

Technical field

This utility model relates to Machining Technology for Cutting field, is specifically related to high intensity spiral bit.

Background technology

Fluted drill is to process the cutter portalled from solid material, is again cutter most widely used in aperture knife tool.Fluted drill is to be relatively fixed the rotary cutting instrument with the circular hole of drilling workpiece of axis by it.It is similar to Flos Cannabis because of its chip pocket curl and gains the name.Helicla flute has 2 grooves, 3 grooves or more multiple-grooved, but most commonly seen with 2 grooves.Fluted drill can be clamped in hands fluted drill manually, electrically and hold use on formula boring bar tool or drilling machine, milling machine, lathe or even machining center.Drill bit material is generally high-speed tool steel or hard alloy.

Manufacture the material of fluted drill, domestic typically all use universal high speed steel W18Cr4V and W6Mo5Cr4V2, owing to the former thermoplasticity is poor, it is impossible to meet in current drill bit manufacture roll, the technological requirement of the thermoplastic molding such as torsion.Although the latter's thermoplasticity is preferable, but Decarburization Sensitivity is big, and because of in composition the amount Han molybdenum more, Grindability is poor, and molybdenum in China resource is the most in short supply simultaneously.To this end, we need to improve the structure of existing spiral bit, to improve its mechanical performance, processing performance, cutter wearability.

Utility model content

The purpose of this utility model is the defect for prior art and deficiency, it is provided that a kind of simple in construction, high intensity spiral bit reasonable in design, easy to use.

For achieving the above object, the technical solution adopted in the utility model is: it comprises shank, cervical region, spiral bit body, drilling head, guide part；Described shank is connected with cervical region, and cervical region is connected with spiral bit body, and one end of spiral bit body is provided with drilling head, and drilling head connects guide part；Described guide part is cylindric；A diameter of d of described guide part, a length of L of guide part, a diameter of D of spiral bit body, and d/D are 0.25 ~ 0.5, and L/d is 0.3 ~ 1.

As preferably, the surface configuration of described spiral bit body has titania coating.

During this utility model operation, described guide part and hole blind-mate, both played certain guide effect, and can improve again the radial rigidity of drill bit during boring.

After using said structure, what this utility model produced has the beneficial effect that high intensity spiral bit described in the utility model, improve mechanical performance, processing performance, cutter wearability, this utility model has simple in construction, arranges the advantages such as reasonable, cost of manufacture is low.

Accompanying drawing explanation

Fig. 1 is structure chart of the present utility model；

Fig. 2 is the enlarged drawing of the left view of Fig. 1.

Description of reference numerals:

Shank 1, cervical region 2, spiral bit body 3, drilling head 4, guide part 5.

Detailed description of the invention

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Referring to as shown in Fig. 1 Fig. 2, this detailed description of the invention adopts the following technical scheme that it comprises shank 1, cervical region 2, spiral bit body 3, drilling head 4, guide part 5；Described shank 1 is connected with cervical region 2, and cervical region 2 is connected with spiral bit body 3, and one end of spiral bit body 3 is provided with drilling head 4, and drilling head 4 connects guide part 5；Described guide part 5 is cylindric；A diameter of d of described guide part 5, a length of L of guide part 5, a diameter of D of spiral bit body 3, and d/D are 0.25 ~ 0.5, and L/d is 0.3 ~ 1.

As preferably, the surface configuration of described spiral bit body 3 has titania coating.

During the operation of this detailed description of the invention, described guide part 5 and hole blind-mate, both played certain guide effect, and can improve again the radial rigidity of drill bit during boring.

After using said structure, the high intensity spiral bit having the beneficial effect that described in this detailed description of the invention that this detailed description of the invention produces, improve mechanical performance, processing performance, cutter wearability, this detailed description of the invention has simple in construction, arranges the advantages such as reasonable, cost of manufacture is low.

Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described.Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description, principle of the present utility model is simply described; on the premise of without departing from this utility model spirit and scope; this utility model also has various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model claims scope and is defined by appending claims and equivalent thereof.

Claims

1. high intensity spiral bit, it is characterised in that: it comprises shank, cervical region, spiral bit body, drilling head, guide part；Described shank is connected with cervical region, and cervical region is connected with spiral bit body, and one end of spiral bit body is provided with drilling head, and drilling head connects guide part；Described guide part is cylindric；A diameter of d of described guide part, a length of L of guide part, a diameter of D of spiral bit body, and d/D are 0.25 ~ 0.5, and L/d is 0.3 ~ 1.

High intensity spiral bit the most according to claim 1, it is characterised in that: the surface configuration of described spiral bit body has titania coating.