CN202398876U

CN202398876U - Milling cutter

Info

Publication number: CN202398876U
Application number: CN2011205328584U
Authority: CN
Inventors: 江爱胜; 易为
Original assignee: Zhuzhou Cemented Carbide Cutting Tools Co Ltd
Current assignee: Zhuzhou Cemented Carbide Cutting Tools Co Ltd
Priority date: 2011-12-19
Filing date: 2011-12-19
Publication date: 2012-08-29
Anticipated expiration: 2021-12-19

Abstract

The utility model discloses a milling cutter, which comprises a cutter body, cutting blades and fastening pieces, wherein at least one group of cutter slots are formed on the cutter body; each cutting blade is arranged in each cutter slot; a central hole is formed on each cutting blade; each fastening piece connection hole is formed at the bottom of each cutter slot; the heads of the fastening pieces are pressed into the central holes, and the tails of the fastening pieces pass through the central holes and are connected with the fastening piece connection holes; a first sunken hole into which a wrench is inserted is formed at the tail end of each fastening piece; and the fastening piece connection holes penetrate through the cutter body. The milling cutter has a simple structure and is convenient to assemble and disassemble; the number of cutting edges is relatively increased; the cutting efficiency is high; the cutting force is small; and the vibration is slight.

Description

A kind of milling cutter

Technical field

The utility model relates to metal processing cutting tool, relates in particular to milling cutter.

Background technology

In Milling Process; It is simple in structure, easy to loading and unloading with the milling cutter that cutting tip is clamped in the structure in the cutter groove through the hole of cutting tip to have securing member; Can provide cutting tip bigger chucking power; Make milling cutter have stronger impact resistance and long service life, so this kind cutter structure is widely used in the milling cutter.

The general employing of this type of milling cutter structure as shown in Figure 1; Around central shaft 5 rotations, it mainly is made up of cutter hub 1, cutting tip 2 and securing member 3, is provided with one group of cutter groove 11 and securing member installing hole on the cutter hub 1 at least during its work; Cutting tip 2 places cutter groove 11; Securing member 3 passes the centre bore 21 of cutting tip 2 and is threaded with securing member installing hole on the cutter hub 1, and the head of securing member 3 is pressed in the centre bore 21 of cutting tip 2, thereby cutting tip 2 is fixed in the cutter groove 11; The head of said securing member 3 is provided with fastening recessed; The head of spanner 4 is inserted fastening recessed, just can regulate, so that realize loading and unloading to cutter hub 1 and cutting tip 2 to the degree of tightness of securing member 3.

This milling cutter is simple in structure, easy to loading and unloading, has stronger versatility.But; Because the centre bore of cutting tip is positioned at the center of blade; And the head of spanner inserts the fastening recessed bigger spanner activity space that needs when securing member is operated; This just has to the bigger space of dodging is set on cutter hub, and the sword number of milling cutter receives than limitations, and stock-removing efficiency is lower.In addition, under the equal efficient, the big and easy generation vibration of the milling cutter cutting force that the sword number is few.

The utility model content

The technical problem that the utility model will solve is the deficiency that overcomes prior art, and a kind of simple in structure, easy to loading and unloading, the sword number increases relatively, stock-removing efficiency is high, cutting force is little, vibration is little milling cutter is provided.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

A kind of milling cutter comprises cutter hub, cutting tip and securing member, is provided with one group of cutter groove on the said cutter hub at least; Cutting tip of installing in each cutter groove, said cutting tip is provided with centre bore, and said cutter groove bottom is provided with the securing member connecting hole; The head of said securing member is pressed and is located in the centre bore; The afterbody of securing member passes centre bore and is connected with the securing member connecting hole, and the tail end of said securing member is provided with first recess holes that is used for the spanner grafting, and said securing member connecting hole runs through said cutter hub.

The diameter of the afterbody of said securing member is D, and the minimum wall thickness (MINI W.) of said securing member on the radial section at the first recess holes place is d, 0.1D≤d≤0.25D.

The degree of depth of said first recess holes is H, 0.5D≤H≤2D.

The head of said securing member is provided with second recess holes that is used for the spanner grafting.

Compared with prior art, the advantage of the utility model is:

The milling cutter of the utility model is provided with at the tail end of securing member and is used for first recess holes of pegging graft with spanner, and the securing member connecting hole is made as through cutter hub; Can insert spanner from the tail end of securing member like this, securing member is carried out the degree of tightness operation, make spanner avoid cutter hub; Avoid between spanner and the cutter hub forming and interfere, thus can along the cutter circumferential arrangement more the sword number, effectively improve working (machining) efficiency and milling cutter stable cutting property; And under equal stock-removing efficiency, can reduce the cutting output of every sword, reduce the cutting force of blade; Effectively reduce the cutting vibration of milling cutter, prolong the service life of cutting tip.

Description of drawings

Fig. 1 is the perspective view of milling cutter of the prior art.

Fig. 2 is the perspective view of the milling cutter of the utility model.

Fig. 3 is the perspective view of cutter hub in the milling cutter of the utility model.

Fig. 4 is the perspective view of securing member in the milling cutter of the utility model.

Fig. 5 is the cutaway view of securing member in the milling cutter of the utility model.

Each label is represented among the figure:

1, cutter hub; 2, cutting tip; 3, securing member; 4, spanner; 5, axis; 11, cutter groove; 12, securing member connecting hole; 21, centre bore; 31, head; 32, afterbody; 33, first recess holes; 34, second recess holes.

The specific embodiment

Fig. 2 to Fig. 5 shows a kind of milling cutter embodiment of the utility model, and around axis 5 rotations, it comprises cutter hub 1, cutting tip 2 and securing member 3 during this milling cutter work; At least be provided with one group of cutter groove 11 on the cutter hub 1, cutting tip 2 of installing in each cutter groove 11, cutting tip 2 is provided with centre bore 21; Cutter groove 11 bottom surfaces are provided with securing member connecting hole 12, and the head 31 of securing member 3 is pressed and is located in the centre bore 21, and the afterbody 32 of securing member 3 passes centre bore 21 and is connected with securing member connecting hole 12; The tail end of securing member 3 is provided with first recess holes 33 that is used for spanner 4 grafting, and securing member connecting hole 12 runs through cutter hub 1, can insert spanner 4 from the tail end of securing member 3 like this; Securing member 3 is carried out the degree of tightness operation, make spanner 4 avoid cutter hub 1, avoid forming between spanner 4 and the cutter hub 1 and interfere; Thereby can along the cutter circumferential arrangement more the sword number, effectively improve working (machining) efficiency and milling cutter stable cutting property, and under equal stock-removing efficiency; Can reduce the cutting output of every sword; Reduce the cutting force of blade, effectively reduce the cutting vibration of milling cutter, prolong the service life of cutting tip.

Further, the diameter of the afterbody 32 of securing member 3 is D, and the minimum wall thickness (MINI W.) of securing member 3 on the radial section at first recess holes, 33 places is d; When loading and unloading cutting tip 2, avoid the breakage of securing member 3,0.1D≤d≤0.25D in order to guarantee spanner 4; In the present embodiment, d=0.15D.The degree of depth of first recess holes 33 is H, and when guaranteeing that spanner 4 passes to securing member 3 than high pulling torque, securing member 3 is not damaged, 0.5D≤H≤2D, and in the present embodiment, H=D.

In the present embodiment, be provided with at the head 31 of securing member 3 and be used for second recess holes 34 of pegging graft with spanner 4.When a side of securing member 3 heads 31 has than large space; Can the degree of tightness that spanner 4 inserts 34 pairs of securing members 3 of second recess holes be regulated from a side of securing member 3 heads 31; When a side space of securing member 3 heads 31 less and can't insert spanner 4 time, then can the degree of tightness that spanner 4 inserts 33 pairs of securing members 3 of first recess holes be regulated from a side of securing member 3 afterbodys.

The above-mentioned just preferred embodiment of the utility model is not that the utility model is done any pro forma restriction.Though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model.Any those of ordinary skill in the art; Under the situation that does not break away from the utility model technical scheme scope; All the technology contents of above-mentioned announcement capable of using is made many possible changes and modification to the utility model technical scheme, or is revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from the utility model technical scheme, all should drop in the scope of the utility model technical scheme protection any simple modification, equivalent variations and modification that above embodiment did according to the utility model technical spirit.

Claims

1. milling cutter; Comprise cutter hub (1), cutting tip (2) and securing member (3); At least be provided with one group of cutter groove (11) on the said cutter hub (1); An installing cutting tip (2) in each cutter groove (11), said cutting tip (2) is provided with centre bore (21), and said cutter groove (11) bottom surface is provided with securing member connecting hole (12); The head (31) of said securing member (3) is pressed and is located in the centre bore (21); The afterbody (32) of securing member (3) passes centre bore (21) and is connected with securing member connecting hole (12), it is characterized in that: the tail end of said securing member (3) is provided with first recess holes (33) that is used for spanner (4) grafting, and said securing member connecting hole (12) runs through said cutter hub (1).

2. milling cutter according to claim 1 is characterized in that: the diameter of the afterbody (32) of said securing member (3) is D, and the minimum wall thickness (MINI W.) of said securing member (3) on the radial section that first recess holes (33) is located is d, 0.1D≤d≤0.25D.

3. milling cutter according to claim 2 is characterized in that: the degree of depth of said first recess holes (33) is H, 0.5D≤H≤2D.

4. according to claim 1 or 2 or 3 described milling cutters, it is characterized in that: the head (31) of said securing member (3) is provided with second recess holes (34) that is used for spanner (4) grafting.