CN204657556U - A kind of spark - Google Patents

Abstract

The utility model relates to a kind of spark, belongs to a kind of drill bit.The structural design of spark conventional is at present reasonable not, and firmness is poor, and service life is shorter, and resource is difficult to obtain rationally, fully utilizing.The utility model comprises cutter head and cutter hub, and one end of described cutter head is provided with the mouth of a river, and its feature is: also comprise interlude, and the other end of described cutter head and one end of interlude are sintered to fix, and the other end of described interlude and one end of cutter hub are welded and fixed.Reasonable in design of the present utility model, firmness is good, long service life.

Description

A kind of spark

Technical field

The utility model relates to a kind of spark, belongs to a kind of drill bit.

Background technology

The structural design of spark conventional is at present reasonable not, and firmness is poor, and service life is shorter, and resource is difficult to obtain rationally, fully utilizing.Now commercially mostly like product adopts cutter head and matrix directly to add thermal weld (soldering), cutter head is made to carry out secondary high-temperature heating, welding temperature controls improper meeting and causes strength failure and graphitization to the diamond in cutter head, belong to during cutter head welding and heat without pressure type, hyperbaric heating when sintering with cutter head is widely different, can cause strength damage to the adamantine carcass of parcel.In order to avoid destroying cutter head intensity and diamond intensity, the basic eutectic welding wire bond that adopts connects, and welding temperature is lower, and the intensity of welding wire own is lower, weld strength will be caused not high, easily occur the destructive situations such as cutter head comes off.

Now commercially also have the mode that fraction like product employing cutter head welds with base laser, can avoid post bake cutter head, weld strength is high.But laser welding apparatus is expensive, universalness application can not be realized; And due to cutter hub and cutter head be not similar or close material, high to welding process requirement, complex process; Laser weld there are certain requirements throat thickness, again cannot burn-through time too thick, and applicable surface is narrower.

Utility model content

The purpose of this utility model is to overcome above shortcomings in prior art, and provides a kind of reasonable in design, and firmness is good, the spark of long service life.

The technical scheme in the invention for solving the above technical problem is: this spark comprises cutter head and cutter hub, one end of described cutter head is provided with the mouth of a river, its design feature is: also comprise interlude, the other end of described cutter head and one end of interlude are sintered to fix, and the other end of described interlude and one end of cutter hub are welded and fixed.

As preferably, in cutter head described in the utility model, be provided with auxiliary water hole.

As preferably, the quantity at the mouth of a river described in the utility model is two.

As preferably, the material of interlude described in the utility model is identical with the material of cutter hub.

As preferably, the utility model at the axial direction of cutter head, the described mouth of a river and the dislocation arrangement of auxiliary water hole.

As preferably, the quantity in auxiliary water hole described in the utility model is two.

The utility model compared with prior art, have the following advantages and effect: the other end of cutter head and one end of interlude are sintered to fix, cutter head and interlude are connected as one after HTHP sinters, realizes meltbility compact siro spinning technology, make the connection of cutter head and interlude firm.When finished product welds, the other end of interlude and one end of cutter hub are welded and fixed, owing to being separated with one section of interlude between cutter head and cutter hub, heating region will be welded away from cutter head, under the prerequisite avoiding the post bake of cutter head to damage, effectively can guarantee the firmness welded, during as employing soldering, also can adopt high temperature welding wire.Interlude is consistent with the material of cutter hub, can adopt multiple welding at pad place, as soldering, argon arc welding, laser weld etc.

Accompanying drawing explanation

Fig. 1 is the main TV structure schematic diagram of spark in the utility model embodiment.

Fig. 2 is the left TV structure schematic diagram of Fig. 1.

Fig. 3 is the right TV structure schematic diagram of Fig. 1.

Fig. 4 is the plan structure schematic diagram of Fig. 1.

Fig. 5 is the sectional structure schematic diagram in A-A face in Fig. 1.

Fig. 6 is the perspective view of spark in the utility model embodiment.

Fig. 7 is the perspective view at another visual angle of spark in the utility model embodiment.

Detailed description of the invention

Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that the utility model is not limited to following examples to explanation of the present utility model.

Embodiment.

See Fig. 1 to Fig. 7, the spark in the present embodiment comprises cutter head 1, interlude 2 and cutter hub 3, and wherein, the material of interlude 2 is identical with the material of cutter hub 3.

In the present embodiment, one end of cutter head 1 is provided with the mouth of a river 4, is also provided with auxiliary water hole 5 in cutter head 1.Under normal circumstances, the quantity at the mouth of a river 4 is two, and the quantity in auxiliary water hole 5 is two, and at the axial direction of cutter head 1, the mouth of a river 4 and auxiliary water hole 5 misplace and arrange.

In the present embodiment, the other end of cutter head 1 and one end of interlude 2 are sintered to fix, and the other end of interlude 2 and one end of cutter hub 3 are welded and fixed.

Adopt cutter head 1 to sinter together with one section of interlude 2 when sintering, cutter head 1 is connected as one with the junction of interlude 2 after HTHP sinter, realizes meltbility compact siro spinning technology, make being connected firmly of cutter head 1 and interlude 2, reliably.When finished product welds, product is actual is the welding of interlude 2 and cutter hub 3, and interlude 2 is consistent with the material of cutter hub 3, so can adopt multiple welding at pad place, as soldering, argon arc welding, laser weld etc.

And when finished product welds, because cutter head 1 is fixed with one section of interlude 2, heating region will be welded away from cutter head 1, avoid the post bake damage of cutter head 1, during as employing soldering, also can adopt high temperature welding wire.

The present embodiment is also provided with auxiliary water hole 5 in cutter head 1, cutter head 1 is along with continuous use, the mouth of a river 4 is gradually worn down, when the mouth of a river 4 is worn down to a certain degree, the position of one end of cutter head 1 is positioned at auxiliary water hole 5 place, and now, auxiliary water hole 5 just defines the new mouth of a river, thus extend the service life of spark, make resource be able to sufficient utilization.Under normal circumstances, in the radial direction of cutter head 1, namely cutter head 1 circumferentially, and auxiliary water hole 5 and the mouth of a river 4 overlap, and the length of lap is the length in 1/4th apertures being less than or equal to auxiliary water hole 5.

The mouth of a river 4 in the utility model on cutter head 1 is common practise to those skilled in the art, and the mouth of a river 4 is the equal of a breach, no longer describes in detail herein.

In addition, it should be noted that, the specific embodiment described in this description, the shape, institute's title of being named etc. of its parts and components can be different, and the above content described in this description is only to the explanation of the utility model structure example.The equivalence change that structure, feature and principle described in all foundation the utility model inventional idea are done or simple change, be included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.

Claims (6)

1. a spark, comprises cutter head and cutter hub, and one end of described cutter head is provided with the mouth of a river, it is characterized in that: also comprise interlude, and the other end of described cutter head and one end of interlude are sintered to fix, and the other end of described interlude and one end of cutter hub are welded and fixed.

2. spark according to claim 1, is characterized in that: be provided with auxiliary water hole in described cutter head.

3. spark according to claim 1 and 2, is characterized in that: the quantity at the described mouth of a river is two.

4. spark according to claim 1 and 2, is characterized in that: the material of described interlude is identical with the material of cutter hub.

5. spark according to claim 2, is characterized in that: at the axial direction of cutter head, the described mouth of a river and the dislocation arrangement of auxiliary water hole.

6. spark according to claim 2, is characterized in that: the quantity in described auxiliary water hole is two.