CN209394041U - A kind of multifunctional percussion drill - Google Patents

Abstract

A kind of multifunctional percussion drill, including drill body, drillstock, alloy blade, the drill body is structure as a whole with drillstock, the alloy blade is entrenched in the end of drill body, the drill body offers the chip space of spiral trend along surface perimeter, drill body forms corresponding blade along chip space, the chip space is trapezoidal groove body, and the angle between blade and the central axis of drillstock is obtuse angle, the alloy blade includes cutter hub, the top of the cutter hub is provided tiltedly with preceding cutting face, cutting face afterwards, the preceding cutting face and the angled connection of left cut bevel form left front cutting edge, the preceding cutting face and the angled connection of right cut bevel form cutting edge before the right side, cutting face and the angled connection of left cut bevel form left back cutting edge after described, cutting face and the angled connection of right cut bevel form cutting edge behind the right side after described, it can quick chip removal, and it can accurately The function of positioning effectively improves the service life of drill bit.

Description

A kind of multifunctional percussion drill

Technical field

The utility model relates to drilling tool technical field, espespecially a kind of multifunctional percussion drill.

Background technique

Electric drill can be divided into electric hand drill, impact drill, electric hammer, and the working principle of electric drill is electromagnetic rotation or electromagnetic reciprocating The rotor of small capacity motor does magnetic field intercepts acting operating, drives apparatus for work by transmission mechanism, band moving gear adds The power of big drill bit, to make drill bit scraping material surface, the drill body on existing drill bit, which is equipped with, offers spiral shell along surface perimeter Monotype half slot and dimorphism half slot are moved towards in rotation, and monotype half slot and dimorphism half slot are in chip removal effect, it may appear that chip removal is not Lead to the idle abrasion of alloy in time, to reduce the service life of drill bit, furthermore the alloy blade on drill bit is only set on its top It is equipped with a main cutting edge, and main cutting edge two sides are tiltedly installed with left cut bevel, right cut bevel, this structure at an angle Cause drill bit to be difficult to accurately position in some smooth planes, leads to the hole of drill bit out of position.

Utility model content

It, can quickly chip removal and can accurately to solve the above problems, the utility model provides a kind of multifunctional percussion drill The function of positioning effectively improves the service life of drill bit.

A kind of in order to achieve the above purposes, the technical solution adopted by the utility model is: multifunctional percussion drill, including drill body, Drillstock, alloy blade, the drill body are structure as a whole with drillstock, and the alloy blade is entrenched in the end of drill body, the drill body The chip space of spiral trend is offered along surface perimeter, drill body forms corresponding blade along chip space, and the alloy blade includes Cutter hub, the top of the cutter hub are provided tiltedly with left cut bevel, right cut bevel, the left cut bevel, the angled connection of right cut bevel Cutting edge in formation, the chip space is trapezoidal groove body, and the angle between blade and the central axis of drillstock is obtuse angle, described The top of cutter hub is provided tiltedly with preceding cutting face, rear cutting face, and the preceding cutting face forms left front with the angled connection of left cut bevel Cutting edge, the preceding cutting face and the angled connection of right cut bevel form cutting edge before the right side, the rear cutting face and left cut bevel Angled connection forms left back cutting edge, and the rear cutting face and the angled connection of right cut bevel form cutting edge behind the right side, described The area of left cut bevel and right cut bevel is greater than the area in preceding cutting face and rear cutting face.

Specifically, the left and right sides of the alloy blade cutter hub is equipped with lateral incision bevel, lateral incision bevel and alloy blade cutter hub Between formed side cutting edge.

Specifically, the angle between the lateral incision bevel and the front end face of alloy blade cutter hub is 95 ° -99 °.

Specifically, the angle between the blade and the central axis of drillstock is 120 ° -150 °.

Specifically, the angle between the left cut bevel, right cut bevel is 115 ° -121 °.

The utility model has the beneficial effects that: the utility model changes the semicircle slot structure of traditional chip space, will arrange It considers slot to be worth doing and trapezoidal groove body is set, and the angle between blade and the central axis of drillstock is obtuse angle, so that the slot bottom width of chip space Less than width of rebate, solid capacity is increased, to reach the effect of quick chip removal, reduces to accumulate in chip space because of break flour and block up Plug leads to the idle abrasion of Alloy blade in use, improves its service life, while increasing at the top of alloy blade Add and be provided with preceding cutting face, rear cutting face, and preceding cutting face, rear cutting face and left cut bevel, right cut bevel form multiple be used for The cutting edge of auxiliary positioning can effectively assist drill bit spitting drill hole, realize the function of accurate positionin.

Detailed description of the invention

Fig. 1 is structural schematic diagram of the utility model for the drill bit of impact drill；

Fig. 2 is structural schematic diagram of the utility model for the drill bit of electric hammer drill；

Fig. 3 is the top view of alloy blade in the utility model；

Fig. 4 is the main view of alloy blade in the utility model.

Drawing reference numeral explanation: 1, drill body；2, drillstock；3, chip space；4, blade；5, alloy blade；21, annular groove；51, left cut Bevel；52, right cut bevel；53, preceding cutting face；54, rear cutting face；55, middle cutting edge；56, left front cutting edge；57, it is cut before the right side Cut sword；58, left back cutting edge；59, cutting edge behind the right side；60, front end face；61, lateral incision bevel；62, chamfering；63, side cutting edge.

Specific embodiment

In order to more clearly state the utility model, the utility model is further described with reference to the accompanying drawing.

It please refers to shown in Fig. 1-4, the utility model is about a kind of multifunctional percussion drill, including drill body 1, drillstock 2, alloy knife Piece 5, the drill body 1 are structure as a whole with drillstock 2, and the alloy blade 5 is entrenched in the end of drill body 1, and the drill body 1 is along surface Circumference offers the chip space 3 of spiral trend, and drill body 1 forms corresponding blade 4 along chip space 3, and the alloy blade 5 includes knife Body, the top of the cutter hub are provided tiltedly with left cut bevel 51, right cut bevel 52, and the left cut bevel 51, right cut bevel 52 are in angle Degree connection formed in cutting edge 55, the chip space 3 is trapezoidal groove body, and the angle between blade 4 and the central axis of drillstock 2 For obtuse angle, the cutter hub top of the alloy blade 5 is provided tiltedly with preceding cutting face 53, rear cutting face 54, the preceding cutting face 53 with The angled connection of left cut bevel 51 forms left front cutting edge 56, and the preceding cutting face 53 is formed with the angled connection of right cut bevel 52 Cutting edge 57 before the right side, the rear cutting face 54 form left back cutting edge 58 with the angled connection of left cut bevel 51, cut after described The area of cutting edge 59 after face 54 and the angled connection of right cut bevel 52 formation are right, the left cut bevel 51 and right cut bevel 52 is big Area in preceding cutting face 53 and rear cutting face 54.

Compared to the prior art, the utility model changes the semicircle slot structure of traditional chip space 3, and chip space 3 is arranged Trapezoidal groove body, and the angle between blade 4 and the central axis of drillstock 2 is obtuse angle, so that the slot bottom width of chip space 3 is less than slot Mouth width degree, increases solid capacity, to reach the effect of quick chip removal, reduces that accumulated plugging is led in chip space 3 because of break flour The idle abrasion of Alloy blade 5 in use is caused, improves its service life, while increasing at the top of alloy blade 5 Provided with preceding cutting face 53, rear cutting face 54, and preceding cutting face 53, rear cutting face 54 are in left cut bevel 51, right cut bevel 52 Angle connects to form multiple cutting edges for auxiliary positioning, can effectively assist drill bit spitting drill hole, realize accurate positionin Function.

In the present invention, left cut bevel 51, right cut bevel 52 are main cutting face, are mainly used for cutting punching, preceding to cut Bevel 53, rear cutting face 54 are positioning auxiliary cutting face, are mainly used for positioning and having the function of assisted machining.

In the present embodiment, the left and right sides of 5 cutter hub of alloy blade is equipped with lateral incision bevel 61, lateral incision bevel 61 and alloy Side cutting edge 63 is formed between 5 cutter hub of blade.

Using the above scheme, 5 cutter hub of alloy blade the left and right sides be arranged lateral incision bevel 61, and with 5 knife of alloy blade Side cutting edge 63 is formed between body, is mainly used for cutting chip removal, and the distance between two sides cutting face 61 is punching diameter.

In the present embodiment, the angle between the front end face 60 of 5 cutter hub of the lateral incision bevel 61 and alloy blade is 95 °- 99°。

Using the above scheme, the angle between lateral incision bevel 61 and the front end face 60 of alloy blade cutter hub is 95 ° -99 °, can So that the rotation of alloy blade 5 is more stable.

In the present embodiment, the angle between the blade 4 and the central axis of drillstock 2 is 120 ° -150 °.

Using the above scheme, when the angle between blade 4 and the central axis of drillstock 2 is excessive, it will lead to blade 4 and wore Fastly, chip removal efficiency is reduced instead, it is preferable that the angle between blade 4 and the central axis of drillstock 2 is 130 ± 5 °.

In the present embodiment, the angle between the left cut bevel 51, right cut bevel 52 is 115 ° -121 °.

Using the above scheme, the angle between left cut bevel 51, right cut bevel 52 will affect the efficiency of bit bore, excessive It is too small all bad, when the angle between left cut bevel 51, right cut bevel 52 is 115 ° -121 °, the drill bit in this angular range Drilling efficiency keep optimum level.

Wherein, the bottom end front and rear sides of the alloy blade 5 are equipped with chamfering 62, and the chamfering 62 is 45 °, and connection is facilitated to pacify On drill body 1.

Wherein, the drillstock 2 of the utility model can be arranged to different shapes according to different applications, conveniently be connected to difference Driving device applied refering to Figure 1, wherein the cross section of drillstock 2 is triangle with the drill bit of this drillstock 2 On impact drill.It please referring to shown in Fig. 2, the cross section of this drillstock 2 is polygon, and is equipped with arc-shaped annular groove 21 in its side wall, On drill bit application electric hammer drill with this drillstock 2.

Embodiment of above is only that preferred embodiments of the present invention are described, not to the utility model Range be defined, under the premise of not departing from the spirit of the design of the utility model, this field ordinary engineering and technical personnel to this The various changes and improvements that the technical solution of utility model is made should all fall into the guarantor that claims of the utility model determine It protects in range.

Claims (5)

1. a kind of multifunctional percussion drill, including drill body, drillstock, alloy blade, the drill body are structure as a whole with drillstock, the conjunction Golden blade is entrenched in the end of drill body, and the drill body offers the chip space of spiral trend along surface perimeter, and drill body is along chip space Corresponding blade is formed, the alloy blade includes cutter hub, and the top of the cutter hub is provided tiltedly with left cut bevel, right cut bevel, Cutting edge in the angled connection formation of the left cut bevel, right cut bevel, it is characterised in that: the chip space is trapezoidal groove body, And the angle between blade and the central axis of drillstock is obtuse angle, the top of the cutter hub is provided tiltedly with preceding cutting face, rear cutting Face, the preceding cutting face and the angled connection of left cut bevel form left front cutting edge, and the preceding cutting face and right cut bevel are in angle Degree connection forms cutting edge before the right side, and the rear cutting face and the angled connection of left cut bevel form left back cutting edge, cut after described The area of cutting edge after bevel and the angled connection formation of right cut bevel are right, the left cut bevel and right cut bevel is greater than preceding cutting The area in face and rear cutting face.

2. a kind of multifunctional percussion drill according to claim 1, it is characterised in that: the left and right two of the alloy blade cutter hub Side is equipped with lateral incision bevel, and side cutting edge is formed between lateral incision bevel and alloy blade cutter hub.

3. a kind of multifunctional percussion drill according to claim 2, it is characterised in that: the lateral incision bevel and alloy blade knife Angle between the front end face of body is 95 ° -99 °.

4. a kind of multifunctional percussion drill according to claim 1-3, it is characterised in that: the blade and drillstock Angle between central axis is 120 ° -150 °.

5. a kind of multifunctional percussion drill according to claim 4, it is characterised in that: the left cut bevel, right cut bevel it Between angle be 115 ° -121 °.