CN203867468U

CN203867468U - Multi-edge percussion bit

Info

Publication number: CN203867468U
Application number: CN201420297103.4U
Authority: CN
Inventors: 钟华
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-06-06
Filing date: 2014-06-06
Publication date: 2014-10-08
Anticipated expiration: 2024-06-06

Abstract

The utility model discloses a multi-edge percussion bit. The percussion bit comprises a drillstock (1), a drill rod (2) and a cutter bit (5), the drillstock is connected with one end of the drill rod, the cutter bit is platy and arranged in a linear or cross shape at the other end of the drill rod, spiral blades (4) are arranged on the drill rod at intervals, and a chip groove (3) is formed between every two spiral blades. A main cutting edge (6) is arranged in the center of the cutter bit, the cutter angle of the main cutting edge is an obtuse angle, the two sides of the main cutting edge are respectively and symmetrically provided with at least one auxiliary cutting edge (7), the heights of the auxiliary cutting edges decrease in sequence, and grooves (8) are formed between the main cutting edge and the auxiliary cutting edges as well as between the auxiliary cutting edges. Under the same power condition, the pressure of the multi-edge percussion bit is larger, so that the bit saves labor better at work, working efficiency is improved substantially, the cutter angle of the main cutting edge is the obtuse angle, the main cutting edge is more tenacious and stable than a cutting edge with an acute cutter angle, the bit is not prone to bursting apart when encountering hard working media, and therefore the service life of the bit is prolonged.

Description

Multimodal drill hammer

Technical field

This practical a kind of drill hammer, particularly a kind of multimodal drill hammer of relating to.

Background technology

At finishing, cement in building trade, ceramic tile, in the probing of marble etc., often use Churn drill, Churn drill relies on rotation and impacts work, the material of the drill bit of Churn drill is carbide alloy (being generally titanium-cobalt alloy), be used for clamping at electric impact drill, to concrete (generally not comprising steel concrete), wall, ceramic tile, granite, marbles etc. carry out boring, to expansion bolt is installed in hole, the securing members such as plastic expansion pipe, size specification has 6mm-24mm, but at present, most of drill bits are all the drill bits of the unimodal triangle body shape of thin thickness, or the drill bit of the Multi-working-surface of the structure composition such as the cross of the drill bit of unimodal triangle body shape composition, because stressed effect is on the stress surface in the triangle body length of side, when drill bit work, because lifting surface area is large, under the identical effect of power, pressure is relatively very little, while running into especially hard working media, it is very painstaking to use, pierce progress slower.

Utility model content

In order to solve the problem of above-mentioned existence in prior art, the utility model provide a kind of at a high speed, high, the labour-saving multimodal drill hammer of efficiency.

The technical scheme that the technical problems to be solved in the utility model adopts is: described multimodal drill hammer comprises drillstock, drilling rod and cutter head, one end of drillstock jointed rod, cutter head is tabular and is a word or cross is arranged on the other end of drilling rod, on drilling rod, be arranged at intervals with helical edges, between described helical edges, be provided with chip area, the center of described cutter head is provided with operator peak, the nose angle at operator peak is obtuse angle, be symmetrically arranged with at least one secondary cutter peak on operator both sides, peak, the height at secondary cutter peak declines successively, between operator Yu Fudao peak, peak, secondary cutter peak is all formed with groove each other.

The beneficial effects of the utility model: 1. because be provided with operator He Fudao peak, peak and groove on cutter head, from structure, as having increased stress surface, but actual drill bit is little at the lifting surface area of the unimodal cutter head of the existing triangle body of contact area rate of when work and workpiece, groove part makes drill hammer on the rotary drilling fashionable working media in fragility, form tiny remainder to need hardly consumed power to collapse broken impacting, under the condition of same power, pressure is larger, more laborsaving while making drill bit work, efficiency significantly improves, 2. the nose angle at operator peak is obtuse angle, more tough and tensile more stable than the cutter peak of acute angle, running into harder working media is difficult for crumbling, improve application life.

Brief description of the drawings

Fig. 1 is main TV structure schematic diagram of the present utility model,

Fig. 2 is the I-I structure enlarged diagram in Fig. 1,

Fig. 3 is the plan structure figure of Fig. 2,

Fig. 4 is multimodal drill hammer the second cutter head structure schematic diagram of the present utility model,

Fig. 5 is the third cutter head structure schematic diagram of multimodal drill hammer of the present utility model.

Fig. 6 is cross multimodal drill hammer plan structure figure of the present utility model.

In the drawings, 1. operate 7.Fu Dao peak, peak 8, groove 9, blade 10, side knife surface of drillstock 2. drilling rod 3. chip area 4. helical edges 5. cutter heads 6..

Detailed description of the invention

In order to make those skilled in the art understand better the utility model, further describe by reference to the accompanying drawings the technical solution of the utility model according to detailed description of the invention below.

At Fig. 1, Fig. 2, in Fig. 3, multimodal drill hammer, it comprises drillstock 1, drilling rod 2 and cutter head 5, the shape of described drillstock comprises square, circular, one end of drillstock jointed rod, cutter head is arranged on the other end of drilling rod, cutter head is a word cutter head of tabular (tabular), leave lug boss at drill rod end, and on lug boss, slot (not shown in FIG.), by in cutter head insertion groove, then welding, certainly also comprise other types of attachment, on drilling rod, be arranged at intervals with helical edges 4, between described helical edges, be provided with chip area 3, described tool tip material is carbide alloy, cutter head center is provided with operator peak 6, the nose angle at operator peak is obtuse angle, operator both sides, peak be symmetrically arranged with more than two secondary cutter peak 7(6 millimeter specifications can arrange according to actual conditions multiple, 6 millimeters of following specifications be generally each one around), the height at secondary cutter peak declines successively, operator Yu Fudao peak, peak, secondary cutter peak is all formed with groove 8 each other, bottom portion of groove is circular-arc, mid portion on He Fudao peak, described operator peak is blade 9, the both sides of blade are that the side knife surface 10(that intersects at blade He Fudao peak, the peak cross section of operating is the triangle of top band small round corner, gable top is blade, triangle two inclined-planes are side knife surface), between side knife surface and blade, become 45～60 ° of angles (preferably 45 °), in the time of work, operator peak can ensure to cut the smooth and easy and accurate location centering of pin, make the cutter head movement of can not skidding, secondary cutter peak can assist operator peak to cut in cutter head is piercing process, the width of described groove and the degree of depth are according to model and the processing of actual model working condition, drill hammer is fashionable at impact rotary drilling, due to such as ceramic tile of working media, cement etc. are all fragile materials, although due to the groove shapes on cutter head, drill bit is in the time of work, on working media, form the tiny remainder of groove shapes, as long as impact but run into slight vibration, tiny remainder will collapse broken in the situation that of consumed power hardly, and needn't as traditional unimodal triangle drill bit, rely on stress surface to go fragmentation, more laborsaving, thereby increase work efficiency.

As shown in Figure 4, Figure 5, taking the cutter head of 6 millimeters of following specifications as example, the nose angle at secondary cutter peak can be obtuse angle or acute angle, and in Fig. 4, secondary cutter peak 7 height of obtuse angle nose angle are lower than operator peak, and in Fig. 5, the secondary cutter peak heights of acute angle is a little less than operator peak 6.

As further improvement, as shown in Figure 6, two above-mentioned word cutter heads can be intersected to form to cross cutter head mutually, in order further to increase the stability of cross cutter head, one section of chip area can be reduced by drill bit end, makes circular end.

Multimodal drill hammer described in the utility model is applicable to Churn drill and electric hammer, only need to manufacture different drillstocks according to actual conditions.

Concrete data in above-mentioned embodiment are only for clearly describing the technical solution of the utility model to make to it will be appreciated by those skilled in the art that instead of restriction to embodiment.To those of ordinary skill in the art; on the basis of above-mentioned detailed description of the invention, can also make other changes in different forms, and the apparent variation made thus or variation are still within the protection domain in claim technical scheme of the present utility model.

Claims

1. multimodal drill hammer, it comprises drillstock (1), drilling rod (2) and cutter head (5), one end of drillstock jointed rod, cutter head is tabular and is a word or cross is arranged on the other end of drilling rod, on drilling rod, be arranged at intervals with helical edges (4), between described helical edges, be provided with chip area (3), it is characterized in that: the center of described cutter head is provided with operator peak (6), the nose angle at operator peak is obtuse angle, be symmetrically arranged with at least one secondary cutter peak (7) on operator both sides, peak, the height at secondary cutter peak declines successively, between operator Yu Fudao peak, peak, secondary cutter peak is all formed with groove (8) each other.