CN207914710U - A kind of welding carbide-tipped reamer - Google Patents

Abstract

The utility model is related to a kind of welding carbide-tipped reamers, including cutter head and handle of a knife, the cutter head includes the head welded together and extension, the head circumferential surface is integrally formed multiple cutters tooth, it is formed with cutter groove between the adjacent cutter tooth, it is welded with the head one end of the extension, the other end is connect with the handle of a knife, end face of the head towards the extension is successively integrally formed with round platform and cylinder, round platform, cylinder, the central axial direction of head and extension is consistent, end face of the extension towards the head be formed with indent with the round platform and the matched pedestal of the cylinder, the round platform and cylinder welding are in the susceptor.Due to the collective effect of round platform and cylinder so that welding position stability is high, and the head of welding position both sides and the axis contraposition accuracy of extension are high, this improves the product quality of welding carbide-tipped reamer.

Description

A kind of welding carbide-tipped reamer

Technical field

The utility model belongs to field of machining, is related to a kind of reamer, is cut with scissors more particularly to a kind of welding hard alloy Knife.

Background technology

Reamer, which is one kind, having one or more cutter tooth, to cut off the rotating knife of machined hole surface sheet metal Tool.Reamer is for drilling on ream workpiece（Or reaming）Hole after processing reduces primarily to improving the machining accuracy in hole The roughness on its surface is the finishing for hole and semi-finished cutter, the general very little of allowance.

When workpieces processing case hardness is larger, the reamer of wolfram steel material need to be selected, but its material cost is very big, so can To make tool bit part wolfram steel material, shank portion makes of other lower cost materials, then welds cutter head and head handle Together, this can reduce the cost of charp tool, such as the Chinese utility model patent of Publication No. CN202151728U, exactly use Such mode, but it there are disadvantage, welding position cutter head end is taper, handle of a knife has the pedestal for accommodating taper, such shape Its stability of the weld of state and contraposition accuracy are inadequate, this makes it be not suitable for being applied to through reamer, especially extra-long reamer, Because through reamer needs strict guarantee weld both sides component（Such as cutter head and handle of a knife）Central axis contraposition accuracy, need to protect Demonstrate,prove the stability of weld.

Utility model content

The utility model aim is to provide for a kind of welding carbide-tipped reamer, and it is accurate to solve the component contraposition of weld both sides The problem that true property is inadequate and stability is inadequate, disclosure satisfy that the requirement of extra-long reamer.

In order to achieve the above objectives, the technical solution adopted in the utility model is：

The utility model provides a kind of welding carbide-tipped reamer, including cutter head and handle of a knife, and the cutter head includes welding Head together and extension, the head circumferential surface are integrally formed multiple cutters tooth, are formed with cutter groove between the adjacent cutter tooth, institute The one end and the head for stating extension are welded, and the other end is connect with the handle of a knife, end of the head towards the extension Successively integrally formed with round platform and cylinder, round platform, cylinder, the central axial direction of head and extension are consistent, described to prolong in face End face of the long portion towards the head be formed with indent with the round platform and the matched pedestal of the cylinder, the round platform and institute State cylinder welding in the susceptor.

Optimally, it is silver soldering piece between the round platform and the cylinder and the pedestal, the silver soldering piece is welded on round platform Between pedestal and between cylinder and pedestal.

Optimally, the taper of the round platform is 1.15, and the top surface diameter of the round platform is the 1/2 of basal diameter, the circle The diameter of column is identical as the top surface diameter of the round platform, and the bottom surface of round platform is bonded completely with the end face on head, the top surface of round platform with One end of cylinder is bonded completely, and the ratio between the height of cylinder and the height of round platform are 5：4.

Optimally, it is provided with interior cold hole and extends to the cutter head from the handle of a knife, and in the cutter groove split shed.

Optimally, the cutter tooth include from head to step-like the first blade and the second blade to connect in extension direction, Second blade head surface more prominent than first blade.

Further, the outer rim of first blade and second blade in one end far from handle of a knife is each formed with down Angle.

Optimally, the quantity of the cutter tooth is 8, is distributed on the circumferential surface on the head.

Any of the above scheme, optimally, the head are made of wolfram steel material, and the extension and the handle of a knife are by high speed Steel material is made.

Since above-mentioned technical proposal is used, the utility model has following advantages compared with prior art：

The welding carbide-tipped reamer of the utility model, since extension is welded in one end on the head for being provided with cutter tooth, The length for increasing reamer makes it meet the length requirement of extra-long reamer；Due in end face of the head towards extension successively one Body formed to have round platform and cylinder, extension to be provided with the pedestal with the matched indent of round platform cylinder, head aligns slightly with extension There are inaccuracy, round platform and cylinder just cannot be connected in pedestal, therefore the contraposition of the axis of head and extension can be made accurate；Circle Platform and cylinder also can make head and extension be connected together more stablely, ensure that the cutting performance of reamer.

Description of the drawings

Some specific realities of the utility model are described in detail by way of example rather than limitation with reference to the accompanying drawings hereinafter Apply example.Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that The drawings are not necessarily drawn to scale.In attached drawing：

Fig. 1 is the perspective schematic view according to a kind of welding carbide-tipped reamer of the utility model one embodiment；

Wherein, the reference numerals are as follows：

1, cutter head；11, head；111, cutter tooth；1111, the first blade；1112, the second blade；1113, chamfering；112, knife Slot；113, round platform；114, cylinder；12, extension；121, pedestal；2, handle of a knife；3, interior cold hole.

Specific implementation mode

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality Novel protected range.

It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.

In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other Not constituting conflict can be combined with each other.

Fig. 1 is the perspective schematic view according to a kind of welding carbide-tipped reamer of the utility model one embodiment.Weldering It connects carbide-tipped reamer and may include cutter head 1 and handle of a knife 2 in general manner, wherein cutter head 1 is for cutting, and handle of a knife 2 is for external machinery Clamping to reamer.

In the present embodiment, cutter head 1 is made of the head 11 welded together and extension 12, and head 11 is by wolfram steel material system At the processing request to high rigidity workpieces processing can be met, extension 12 is integrally formed with handle of a knife 2, by high speed steel material system At the cost of material is low than wolfram steel for high speed steel material cost.

The structure on head is such, and 11 circumferential surface of head is evenly distributed with integrally formed 8 cutters tooth 111,111 shapes of adjacent cutter tooth At there is cutter groove 112.Cutter tooth 111 is helical teeth, and inclined direction is vertical with 11 axis of head and round using axis as one of the center of circle Direction of rotation on circumference.Cutter tooth 111 includes the first blade 1111 and the second blade 1112, the first blade 1111 and the second blade Step-like between 1112 to connect, in the two joint, the height of the second blade 1112 is higher than the first blade 1111 suddenly.Setting first Blade 1111 and the second blade 1112 make cutter tooth 111 have such a difference in height, are to improve work pieces process efficiency. One end of the blade 1111 far from handle of a knife 2 is formed with chamfering 1113, and the second end of the blade 1112 far from handle of a knife 2 is formed with another The angle of chamfering 1113, the cutting edge turning that the chamfering 1113 on the first blade 1111 is formed is 110 °, on the second blade 1112 The angle at the cutting edge turning that chamfering 1113 is formed is 160 °, and the processing of welding carbide-tipped reamer can be improved in the setting of chamfering 1113 Efficiency.

12 ontology of extension is cylinder, and one end is welded with head 11, and the other end is integrally formed with handle of a knife 2.

Head 11 with 12 phase welding position of extension be it is such, head 11 towards extend ask 12 end face successively one at Type has round platform 113 and cylinder 114, and the taper of round platform 113 is 1.15, central axis and the head 11 of round platform 113 and cylinder 114 Central axial direction is consistent, as parallel, is further to overlap in the present embodiment.The basal diameter of round platform 113 is that top surface is straight 2 times of diameter, bottom surface are bonded completely with 11 end face of head, and top surface is bonded completely with one end of cylinder 114, the height of cylinder 114 with The ratio between height of round platform 113 is 5：4, so that one is formed on the end face on head 11 by 114 common structure of round platform 113 and cylinder At bossy body, which extend into the end of extension 12, is formed in the endface towards head 11 of extension 12 With the pedestal 121 of 114 matched indent of round platform 113 and cylinder.Between the conical surface and pedestal 121 of round platform 113 and cylinder 114 Circumferential surface and pedestal 121 between round platform 113 and cylinder 114 are welded on pedestal 121 by silver soldering piece.Head 11 and extension 12 when welding together, and the central axis of head 11 and extension 12 coincides, and to ensure rotation and the cutting performance of reamer, Work difference is accurately controlled within 3 μ, this can reduce the probability that breaking occurs in high-speed rotation operation for reamer.

Silver soldering piece fusing point is low, about 550 DEG C, using high-frequency welding, weld can be made to be unlikely to deform, position standard in this way Really, firm welding.

Due to round platform 113 and cylinder 114（Especially cylinder 114）Setting so that between head 11 and extension 12 In conjunction with very firm, it is not easy to loosen；And due to round platform 113 and cylinder 114（Especially cylinder 114）Position-limiting action, Neng Goubao When manufacturing reamer, the central axis of head 11 and extension 12 overlaps card, improves reamer quality.

Round platform 113 is bonded completely with the end face on head 11, after being welded, is not easy to find out weld mark in appearance.

In the present embodiment, interior cold hole 3 is extended with into cutter hub from handle of a knife 2, interior cold hole 3 includes a main aperture and and main aperture Multiple holes being connected, branch hole lead to cutter groove 112 and in its surface openings.The effect in interior cold hole 3 is that coolant liquid is led to temperature It spends at higher cutting cutter tooth 111, cools down to cutter tooth 111 in operation and improve welding carbide-tipped reamer performance.

Above-described embodiment is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with technique Personage can understand the content of the utility model and implement according to this, the scope of protection of the utility model can not be limited with this, It is all according to equivalent change or modification made by the spirit of the present invention essence, should all cover the scope of protection of the utility model it It is interior.

Claims (8)

1. a kind of welding carbide-tipped reamer, including cutter head（1）And handle of a knife（2）, it is characterised in that：The cutter head（1）Including weldering The head being connected together（11）And extension（12）, the head（11）Circumferential surface is integrally formed multiple cutters tooth（111）, adjacent described Cutter tooth（111）Between be formed with cutter groove（112）, the extension（12）One end and the head（11）Welding, the other end and institute State handle of a knife（2）Connection, the head（11）Towards the extension（12）End face successively integrally formed with round platform（113）And circle Column（114）, round platform（113）, cylinder（114）, head（11）And extension（12）Central axial direction it is consistent, the extension Portion（12）Towards the head（11）End face it is being formed with indent with the round platform（113）With the cylinder（114）It is matched Pedestal（121）, the round platform（113）With the cylinder（114）It is welded on the pedestal（121）In.

2. welding carbide-tipped reamer according to claim 1, it is characterised in that：The round platform（113）With the cylinder （114）With the pedestal（121）Between be silver soldering piece, the silver soldering piece is welded on round platform（113）And pedestal（121）Between and Cylinder（114）And pedestal（121）Between.

3. welding carbide-tipped reamer according to claim 1, it is characterised in that：The round platform（113）Taper be 1.15, the round platform（113）Top surface diameter be the 1/2 of basal diameter, the cylinder（114）Diameter and the round platform （113）Top surface diameter it is identical, round platform（113）Bottom surface and head（11）End face be bonded completely, round platform（113）Top surface with Cylinder（114）One end be bonded completely, cylinder（114）Height and round platform（113）The ratio between height be 5：4.

4. welding carbide-tipped reamer according to claim 1, it is characterised in that：It is provided with interior cold hole（3）From the knife Handle（2）Extend to the cutter head（1）, and in the cutter groove（112）Split shed.

5. welding carbide-tipped reamer according to claim 1, it is characterised in that：The cutter tooth（111）Including from head （11）To extension（12）Step-like the first blade to connect in direction（1111）With the second blade（1112）, second blade （1112）Than first blade（1111）The more prominent head（11）Surface.

6. welding carbide-tipped reamer according to claim 5, it is characterised in that：First blade（1111）With it is described Second blade（1112）Far from handle of a knife（2）The outer rim of one end be each formed with chamfering（1113）.

7. welding carbide-tipped reamer according to claim 1, it is characterised in that：The cutter tooth（111）Quantity be 8 It is a, it is distributed on the head（11）Circumferential surface.

8. welding carbide-tipped reamer according to any one of claim 1 to 7, it is characterised in that：The head（11） It is made of wolfram steel material, the extension（12）With the handle of a knife（2）It is made of high speed steel material.