CN201537731U

CN201537731U - Disc milling cutter

Info

Publication number: CN201537731U
Application number: CN2009202038262U
Authority: CN
Inventors: 王森; 丁铭鑫
Original assignee: CNR Dalian Locomotive Research Institute Co Ltd
Current assignee: CRRC Dalian Institute Co Ltd
Priority date: 2009-09-30
Filing date: 2009-09-30
Publication date: 2010-08-04
Anticipated expiration: 2019-09-30

Abstract

The utility model provides a disc milling cutter, which solves the problem in processing an air outlet housing. The disc milling cutter is classified as a turning face milling cutter; nine axial back up blocks are arranged at the periphery of the cutter body; a blade is fastened on a shim of each axial back up block through an inner hexagon screw; the rake angle Gamma f of the blade is 5 degrees, the cutting edge inclination Gamma s thereof is negative 3 degrees, the tool cutting edge angle Kappa r thereof is 45 degrees, and the relief angle Alpha o thereof is 9 degrees; the blade is triangular or quadrangular; the height of the quadrangular blade is 68.24mm, the wide thereof is 40.13mm, and the thickness thereof is 8mm; the negative chamfer on a front face of the blade is 10 degrees; and a turning blade is clamped on the cutter body by a clamping element. The disc milling cutter has the characteristics that the positioning precision of the blade is high, the clamping is reliable, the chip removal is easy, the blade is replaced rapidly, at the same time, the commonality of a positioning element and the clamping element is good, and the manufacturing is convenient.

Description

The dish milling cutter

Technical field

The utility model belongs to indexable face milling cutter, is specifically related to a kind of dish milling cutter.

Background technology

At the processing work end face, for example when processing air inlet housing 8 end faces and endoporus, traditional processing method is to adopt turning processing, and turning adds man-hour, 8 rotations of workpiece air inlet housing, and cutter 7 is fixing, as shown in Figure 5; The shortcoming of this processing mode is because workpiece air inlet housing quality is inhomogeneous, produces uneven centrifugal force during rotation, and therefore the air inlet housing endoporus form and position tolerance that adopts the turning mode to process is difficult to guarantee that the circularity of endoporus does not guarantee.Change processing mode, make that workpiece is fixed, cutter rotary cutting workpiece, there is following problem in existing cutter: (1) rigidity is not enough, because after changing processing mode, the cutting force that produces in the processing increases, and is therefore higher to the rigidity requirement of cutter, and existing cutter rigidity can not arrive requirement; (2) stock-removing efficiency is low, because the blade angle of existing cutter is not used in Milling Process, tool cutting edge angle is bigger, only be applicable to the fine finishining that cutting-in is little, so stock-removing efficiency is low; (3) tool arc of existing cutter is big, the machined surface roughness height.

Summary of the invention

The utility model provides a kind of dish milling cutter, makes workpiece fix, coil milling cutter rotary cutting workpiece, has overcome the shortcoming of turning processing.

The utility model dish milling cutter is an indexable face milling cutter, by clamping element with the indexable insert tip, throw away tip clamping on cutter hub; Design specific blade angle, insert shape.

Described dish milling cutter has nine axial support pieces at the cutter hub periphery, on the edge bearing of every axial support piece, utilizes the fastening a slice blade of SOC.HD. cap screw.

Described blade angle, wherein blade anterior angle γ f is 4 °～6 °, and cutting edge inclination λ s is-1 °～-5 °, and tool cutting edge angle κ r is 40 °～50 °, and relief angle α o is 8 °～12 °.

The best angle of described blade angle, anterior angle γ f are 5 °, and cutting edge inclination λ s is-3 °, and tool cutting edge angle κ r is 45 °, and relief angle α o is 9 °.

Described insert shape has two kinds on triangle and quadrangle.

Described quadrangle blade height is 65mm～75mm, and width is 35mm～42mm, and thickness is 5mm～12mm, and the negative chamfered edge of 8 degree～15 degree is arranged on the rake face of blade.

The best scale of described quadrangle blade: highly be 68.24mm, width is 40.13mm, and thickness is 8mm, and negative chamfered edge is 10 degree on the rake face of blade.

The advantage of dish milling cutter has: blade positioning accuracy height, reliable clamping, chip removal easily, change characteristics such as blade is rapid, each location, clamping element versatility are good, easily manufactured simultaneously.

Description of drawings

Now the utility model is described in further detail in conjunction with the accompanying drawings.

Fig. 1 dish milling cutter construction schematic diagram;

Fig. 2 blade angle figure;

Fig. 3 insert shape dimensional drawing;

Fig. 4 blade angle figure;

Fig. 5 turning processing air inlet housing end face and interior hole pattern.

Accompanying drawing icon: cutter hub 1, axial support piece 2, edge bearing 3, blade 4, SOC.HD. cap screw 5, negative chamfered edge 6, existing cutter 7, air inlet housing 8.

The specific embodiment

As shown in Figure 1, the dish milling cutter be indexable face milling cutter, cutter hub 1 clamping element with indexable insert tip, throw away tip 4 clampings on cutter hub, concrete is at cutter hub 1 periphery nine axial support pieces 2 to be arranged, on the edge bearing 3 of every axial support piece 2, utilize SOC.HD. cap screw 5 fastening a slice blades 4.

As shown in Figure 2, because the dish milling cutter is to carry out the chip breaking cutting when work, therefore in order to increase the intensity of cutting edge, the anterior angle of cutter selects suitable low-angle for well, the blade anterior angle γ f of this dish milling cutter is 4 °～6 °, and best 5 °, what be convenient to cut on the one hand curls, fractures and discharge, help reducing milling distortion and Milling Force on the other hand, well guaranteed the intensity and the durability of blade;

Cutting edge inclination λ s is-1 °～-5 °, and best-3 °, purpose is in order to increase the resistance to impact of blade; Negative cutting edge inclination also can bring certain harm, exactly chip removal is had certain influence, but because the air inlet housing material of processing is a cast iron, so aspect chip removal, can not produce big influence; Tool cutting edge angle κ r is 40 °～50 °, best 45 °, select big tool cutting edge angle, and back force is reduced, centripetal force increases, thereby can reduce the distortion of work piece housing, reduces the vibration in the processing simultaneously; Relief angle α o is 8 °～12 °, best 9 °, selects little relief angle to reduce the friction between the knife face and workpiece behind the cutter.

As shown in Figure 3, usually the blade of indexable milling cutter has two kinds on triangle and quadrangle, and quadrangle blade 4 height (b) be 65mm～75mm, and width (a) is 35mm～42mm, wherein selects optimal parameter to be: be 68.24mm highly, width is 40.13mm.

As shown in Figure 4, blade 4 thickness (c) are 5mm～12mm, and the negative chamfered edge 6 of angle (d) 8 degree～15 degree is arranged on the rake face of blade 4, and negative chamfered edge 6 is used for increasing the intensity of blade; Wherein optimal parameter is: thickness is 8mm, and negative chamfered edge 6 is 10 degree.

When dish milling cutter milling end face, the tangential incision of adopting, the mode that tangentially cuts out, this mode is in order to reduce into cutter point and to go out the knife mark of cutter point, coil the milling cutter rotation in the course of the work, utilize the point of a knife point cutting workpiece of each blade, the rotating speed of cutter is greatly about 800s/m, and feeding is at F500-F800.

Claims

1. dish milling cutter, it is characterized in that: described dish milling cutter is an indexable face milling cutter, by clamping element with the indexable insert tip, throw away tip clamping on cutter hub; And have specific blade angle, an insert shape.

2. according to the described dish milling cutter of claim 1, it is characterized in that: described cutter hub periphery has nine axial support pieces, on the edge bearing of every axial support piece, utilizes the fastening a slice blade of SOC.HD. cap screw.

3. according to claim 1 or 2 described dish milling cutters, it is characterized in that: described blade angle, wherein blade anterior angle γ f is 4 °～6 °, and cutting edge inclination λ s is-1 °～-5 °, and tool cutting edge angle κ r is 40 °～50 °, and relief angle α o is 8 °～12 °.

4. according to the described dish milling cutter of claim 3, it is characterized in that: described blade best angle, wherein anterior angle γ f is 5 °, and cutting edge inclination λ s is-3 °, and tool cutting edge angle κ r is 45 °, and relief angle α o is 9 °.

5. according to claim 1 or 2 described dish milling cutters, it is characterized in that: described insert shape has two kinds on triangle and quadrangle.

6. according to the described dish milling cutter of claim 5, it is characterized in that: described quadrangle blade height is 65mm～75mm, and width is 35mm～42mm, and thickness is 5mm～12mm, and the negative chamfered edge of 8 degree～15 degree is arranged on the rake face of blade.

7. according to the described dish milling cutter of claim 6, it is characterized in that: described quadrangle blade best scale wherein highly is 68.24mm, and width is 40.13mm, and thickness is 8mm, and negative chamfered edge is 10 degree on the rake face of blade.