CN2207251Y

CN2207251Y - Tipped milling cutter

Info

Publication number: CN2207251Y
Application number: CN 94236843
Authority: CN
Inventors: 李家瑞
Original assignee: ZIGONG HARD ALLOY PLANT
Current assignee: ZIGONG HARD ALLOY PLANT
Priority date: 1994-07-13
Filing date: 1994-07-13
Publication date: 1995-09-13
Anticipated expiration: 2004-07-13

Abstract

The utility model discloses an embedded type hard alloy saw blade milling cutter. The circumference of the cutter body of the milling cutter is provided with a wedge-shaped groove for embedding a cutter blade. Two inner side edges of the groove from a convex or a concave curved surface. The upper and the lower end faces of the cutter blade matched with the two inner side edges from a concave or a convex curved surface. Thus fastness and self-locking performance of the cutter blade after pressurization and embedding can be guaranteed. The bottom of the cutter blade groove is equipped with a technological hole connected with the groove, and a support hole provided with assembly and disassembly tools is arranged under a groove mouth for convenient assembly and disassembly of the cutter blade. The utility model has advantages of simple and reliable preparation process, low production and use cost, easy replacement of the cutter blade, good reproducibility of the milling cutter, high cutting speed, wide application, etc.

Description

Tipped milling cutter

The utility model belongs to a kind of metal saw in the machine cut cutter, and particularly a kind of blade is the metal saw of carbide alloy.

At present, be used for milling or cut off the metal saw that metal is used in metal cutting processing, the overwhelming majority is all-in-one-piece HSS sawblade milling cutter, and small part is the welded type carbide alloy metal saw.The former is because the performance of material and the design feature (sheet) of milling cutter itself are limit, and the cutting speed of its permission is lower, generally can only work under the cutting speed of 30～50m/min; In addition, because this class milling cutter is to adopt monoblock type to quench, and must reach HRC61～63 by its hardness of standard-required, so toughness and impact strength are all relatively poor, the phenomenon of in use very easily forging a knife.So general miller for for the purpose of careful, adopted manual feed mostly, thereby has been reduced efficient when using the metal saw processing work; And the welded type carbide alloy metal saw generally is to be cutter hub with the structural alloy steel, knot roughing, carbide chip is gone up in welding again, after fine finishining form.Though the intensity of its cutting speed, efficient and cutter tooth is improved, manufacture difficulty is bigger.Metal saw is more than ten tooth at least, tens teeth at most, if there are several teeth welderings askew, this cutter has just been scrapped in welding process; In use if there are several teeth to break, this cutter has also been scrapped.Therefore, this class metal saw generally only is used for being processed with non-ferrous metal or cast iron, this with regard to overslaugh applying of welded type metal saw.

The purpose of this utility model is that a kind of employing of design embeds cutter hub with blade, by the clamping force of cutter hub itself to carbide chip, and the architectural characteristic of utilizing blade and cutter hub contact-making surface is with its clamping and fixing, to reach when improving cutting speed, improve the reproducibility of its production technology and carbide alloy metal saw, and reach installation simultaneously and change blade convenient, reduce production cost, the use cost of carbide alloy metal saw and enlarge its range of application.

Solution of the present utility model, be on the circumference of sheet cutter hub, offer the insert groove that embeds blade equidistantly by the cutter tooth number, two medial surfaces of insert groove are designed to convex or concave panel, the upper and lower end face shape that cooperates with insert groove on blade then in contrast, and is chimeric closely and self-locking to guarantee it.Therefore, the utility model comprises the sheet cutter hub and is located at carbide chip on the cutter hub circumference, and key is the equidistant wedge insert groove that is provided with on the cutter hub circumference, and carbide chip then embeds in each insert groove respectively; Two inner side edges of insert groove are convex or concave curvatures, and the upper and lower end face of corresponding blade then is spill or convex surface with it, blade embed in the insert groove by pressure and with the fastening one that is connected into of cutter hub.Convex on insert groove two inner side edges or concave curvatures both can cutter hub the plane of symmetry be symmetrical arranged, also can asymmetricly be provided with; Milling cutter can manufacture the commutating tooth metal saw when curved surface is symmetrical arranged; When curved surface is non-ly milling cutter can be made the side set metal saw when being provided with.For the ease of the loading and unloading of blade, can establish a fabrication hole that communicates with insert groove in the bottom of insert groove, and below insert pocket, also establish a fabrication hole as supporting handling instrument fulcrum.

The utility model embeds blade because the wedge groove is set on cutter hub, to fix its radially free degree and realize self-locking by the wedge angle; The contact-making surface of wedge groove and blade is designed to the curved surface that can embed mutually, from and limited the axial freedom of blade; And adopt pressing mode that blade is embedded insert groove, and both can guarantee the chucking power of insert groove dual-side blade, can make blade guarantee the stability of blade under cutting state under the self-locking action at wedge angle again.The setting of fabrication hole in addition, it is simple and easy to do to make it change blade again.The utility model under all identical situation such as bite, as cuts 45 than the HSS sawblade milling cutter ^#Steel, its cutting speed can improve more than 6 times, and need not add cooling fluid, and productivity ratio can improve about 15 times; And compare with the welded type carbide alloy metal saw, except that processing easily all kinds of steel, it is simple, reliable also to have manufacturing process.Characteristics such as produce and use cost is low, applied widely, it is easy to change blade, and the milling cutter reproducibility is good.

Accompanying drawing and description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the A-A view;

Fig. 3 is blade and cutter hub wedge groove structure and relative position schematic diagram;

Fig. 4 is the B-B view;

Fig. 5 is the installation and the dismounting schematic diagram of the utility model blade.

Among the figure: 1, be the sheet cutter hub, 2, blade, 3, the blade removal fabrication hole, 4, the handling instrument support holes, 5, knife bar hole, 6, right tool rest, 7, pin-and-hole, 8, left tool rest, 9, steady pin, 10, insert groove, 11, blade loading and unloading handle, 12, fulcrum post, 13, afterburning pin.

Embodiment

Present embodiment is with milling cutter diameter φ 125mm, cutter hub 1 thick 3mm, and knife bar bore dia φ 32mm, the number of teeth is that the metal saw of 12 teeth is an example:

It is ZP35 that blade 2 adopts the trade mark, and model is the carbide tips of QC1403; Cutter hub 1 adopt material be the 3mm heavy-gauge sheeting blanking of 9crsi and rough turn cylindrical to φ 124mm, knife bar hole 5 internal diameters are to φ 323～325mm; The wide 8mm of keyway; The two sides of roughly grinding cutter hub 1 again is to the equidistant brill handling instrument of thickness 27mm support holes 4 totally 12 diameter phi 32mm, totally 12 of blade removal fabrication holes 3, totally 4 of diameter phi 55mm and pin-and-holes 7, diameter phi 5mm, and behind roughing milling cutter film trap 10 and the chip area cutter hub is quenched to HRC45～50; The two sides of finish grinding cutter hub 1 again is to nominal dimension 24mm correct grinding knife bar hole 5 to φ 32H7, and correct grinding cutter hub cylindrical is to nominal diameter φ 1226mm; Each insert groove 10 of finish-milling on the digital display milling machine, its root and fabrication hole 3 are tangent, promptly wide 55mm, this enforcement of α of wedge angle is adopted 12 °; The insert groove dual-side is protruding V-arrangement face, and its V-arrangement angle β present embodiment is got 142 °; The end face that the blade upper/lower terminal cooperates with it then is recessed V-arrangement face, and its angle also is 142 °.Cutter hub 1 behind the precise cutter groove is standby through sending out blue processing;

Left and right tool rest 8,6 all adopts 45 ^#Steel, behind rough turn inside and outside circle, keyseat, modifier treatment is finish grinded both ends of the surface and endoporus again to HB220～250, and be concentric holes corresponding to the pin-and-hole on left and right tool rest of cutter hub pin hole processing 5(and the cutter hub) wherein: right tool rest 6 is pressed φ 5C9 processing, and left tool rest 8 press φ 5H7 and holed; 4 steady pins 9 also adopt 45 ^#Round steel is quenched to HRC40～45 after pressing φ 5S7 processing, will after keyway on left and right tool rest and the cutter hub and the pin-and-hole alignment steady pin 9 be pressed into through cutter hub to left tool rest, until the three is tightened to one by the pin-and-hole on the right tool rest 6 at last.

At last cutter hub is inserted in knife bar and by key fixing after, adopt the blade loading and unloading handle 11 of band fulcrum post 12 and afterburning pin 13 to pack into by the mode of Fig. 5, after being about to blade 1 insertion insert groove 10, again the fulcrum post on the handle 11 12 is inserted in the fabrication hole 3 of adjacent knife blades groove, and reinforcing pin 13 is pressed on the back of blade 1, holding the clockwise reinforcing of handle again can be pressed into blade in the insert groove 10; After blade installs again through the correct grinding.

If need to change blade, only need 13 insertion process holes 3 are sold in reinforcing, can successfully blade be unloaded by the handle 11 counter-clockwise application of forces again.

Claims

1, a kind of embedded carbide alloy metal saw comprises the sheet cutter hub and is located at carbide chip on the cutter hub circumference that it is characterized in that being provided with on the cutter hub circumference wedge insert groove, carbide chip then embeds in each insert groove respectively equidistantly; Insert groove two inner side edges are convex or concave curvatures, and the upper and lower end face of corresponding blade then is spill or convex surface with it; Blade embed in the insert groove by pressure and with the fastening one that is connected into of cutter hub.

2, by the described embedded carbide alloy metal saw of claim 1, it is characterized in that the plane of symmetry that convex on insert groove two inner side edges or concave curvatures both can cutter hubs is symmetrical arranged, also can asymmetricly be provided with: milling cutter can be made into the commutating tooth metal saw when curved surface is symmetrical arranged: milling cutter can be made the side set metal saw when curved surface is asymmetric the setting.

3, by the described embedded carbide alloy metal saw of claim 1, it is characterized in that being provided with a fabrication hole that communicates with insert groove in the bottom of insert groove: below insert pocket, then be provided with a fabrication hole as supporting handling instrument fulcrum, so that the loading and unloading of blade.