CN201346639Y

CN201346639Y - Railway orbit high manganese steel frog and wing rail special-purpose milling cutter

Info

Publication number: CN201346639Y
Application number: CNU2008202215440U
Authority: CN
Inventors: 马敏辉; 陈刚; 马景辉
Original assignee: Luoyang Luoyinggong Machine Tool & Mould Numerical Control Co Ltd
Current assignee: Luoyang Luoyinggong Machine Tool & Mould Numerical Control Co Ltd
Priority date: 2008-12-04
Filing date: 2008-12-04
Publication date: 2009-11-18
Anticipated expiration: 2018-12-04

Abstract

The utility model belongs to mechanical manufacture cutters, wherein a proposed railway orbit high manganese steel frog and wing rail special-purpose milling cutter mainly comprises a cutter head and a plurality of blade groups 3, wherein the cutter head is composed of a disk-shaped upper cutter body 1 and a cylindrical lower cutter body 2, wherein the excircle surface of the cutter head is a revolution surface which is matched with the cross section shape of an orbit frog, the lower end surface of the upper cutter body of the cutter head is provided with a round lug boss, a concave hole of the upper end surface of the lower cutter body of the cutter head is matched with the round lug boss on the lower end surface of the upper cutter body and is fixedly connected with the upper cutter body through a screw 7, a plurality of blade groups are located on the ex-circle surface of the cutter head and are distributed along the circumference of the cutter head, the blades of each blade group are arranged along the axial direction of the cutter head, and the blades of neighboring blade groups on the ex-circle surface of the cutter head are arranged alternately along the circumference direction. The blades of the cutter are arranged tangentially, the cross section of the blades for bearing the cutting force is big, the cutting edge strength is high, and the mechanical manufacture cutter has the characteristics of high manufacture precision and high manufacture efficiency.

Description

Track potassium steel frog, wing rail special-purpose milling cutter

Technical field

The utility model belongs to the track process tool, mainly proposes a kind of track potassium steel frog, wing rail special-purpose milling cutter.

Background technology

Track frog, wing rail are processed into through special by potassium steel, potassium steel is again a kind of abrasion-resistant stee, work hardening is serious, thermal conductivity factor is little, toughness is high, percentage elongation is big, so cutting force is big, cutting temperature is high, tool wear is fast, durability is low, the disconnected difficulty of cutting.At present, processing track frog, wing rail mainly are the processing modes that adopts planing, have poor, the inefficient problem of machining accuracy.

Summary of the invention

The purpose of this utility model promptly is the special-purpose milling cutter that proposes a kind of track potassium steel frog, wing rail, existing low precision, inefficient problem when processing track potassium steel frog, wing rail to solve.

The utility model is finished the technical scheme that its invention task takes: a kind of track potassium steel frog, wing rail special-purpose milling cutter, mainly comprise cutterhead and a plurality of set of blades, and cutterhead is made of discoidal upper knife body and cylindrical lower knife body; The periphery of cutterhead is the surface of revolution of joining with track frog cross sectional shape kissing, and its lower surface of the upper knife body of cutterhead has round boss; The shrinkage pool of its upper surface of lower knife body of cutterhead cooperates with the round boss of described upper knife body lower surface and connects firmly by screw and upper knife body; Described a plurality of set of blades is positioned on the periphery of cutterhead and along the cutterhead circumference uniform distribution, and the blade of each set of blades is along the cutterhead axially-aligned, and the blade that is positioned at adjacent knife blades group on the cutterhead periphery along the circumferential direction is staggered.

Its lower surface of the round boss of described cutterhead upper knife body has keyway, and the end key embeds keyway and connects firmly by screw and upper knife body, and the shrinkage pool bottom surface of described cutterhead lower knife body upper surface has the keyway of joining with described end key kiss.

Insert tangential of the present utility model is arranged, and it is big that blade bears the cross section of cutting force, can bear big cutting force and impulsive force; Adopt the two negative rake structures of upright dress, the edge strength height can full depth, roughing feed fully raises the efficiency; Blade directly is fixed on screw in the cutter groove of dead location, need not adjust to guarantee for a long time that precision is constant.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is that the A of Fig. 1 is to view.

Among the figure: 1, upper knife body, 2, lower knife body, 3, set of blades, 4, blade, 5 plum blossom screws, 6, the end key, 7,8, screw.

The specific embodiment

The embodiment that provides in conjunction with the accompanying drawings is illustrated the utility model:

As shown in Figure 1, 2, the utility model mainly comprises cutterhead and a plurality of set of blades 3; Cutterhead is made of discoidal upper knife body 1 and cylindrical lower knife body 2; The periphery of cutterhead is the surface of revolution of joining with track frog cross sectional shape kissing, and described upper knife body 1 its lower surface has round boss; The shrinkage pool of its upper surface of lower knife body of cutterhead cooperates with the round boss of described upper knife body lower surface and connects firmly by screw 7 and upper knife body; Described a plurality of set of blades 3 is positioned on the periphery of cutterhead and along the cutterhead circumference uniform distribution, and the blade 4 of each set of blades is along the cutterhead axially-aligned, and the blade that is positioned at adjacent knife blades group on the cutterhead periphery along the circumferential direction is staggered; Each blade of same set of blades has the outline line of different R, in order to adapt, and to be fixed on by plum blossom screw 5 in the insert groove of cutterhead with processing track frog, wing rail shape.

Its lower surface of the round boss of described cutterhead upper knife body has keyway, and end key 6 embeds keyway and connects firmly by screw 8 and upper knife body 1, and the shrinkage pool bottom surface of described cutterhead lower knife body upper surface has the keyway of joining with end key 6 kisses.

Claims

1, the special-purpose milling cutter of a kind of track potassium steel frog, wing rail is characterized in that: mainly comprise cutterhead and a plurality of set of blades (3), cutterhead is made of discoidal upper knife body (1) and cylindrical lower knife body (2); The periphery of cutterhead is the surface of revolution of joining with track frog cross sectional shape kissing, and its lower surface of the upper knife body of cutterhead has round boss; The shrinkage pool of its upper surface of lower knife body of cutterhead cooperates with the round boss of described upper knife body lower surface and connects firmly by screw (7) and upper knife body (1); Described a plurality of set of blades (3) is positioned on the periphery of cutterhead and along the cutterhead circumference uniform distribution, and the blade of each set of blades is along the cutterhead axially-aligned, is positioned at that the adjacent knife blades group along the circumferential direction is staggered on the cutterhead periphery.

2, according to the special-purpose milling cutter of the described track potassium steel of claim 1 frog, wing rail, it is characterized in that: the lower surface of its round boss of upper knife body of described cutterhead has keyway, end key (6) embeds keyway and connects firmly by screw (8) and upper knife body (1), and the shrinkage pool bottom surface of lower knife body (2) upper surface has the keyway of joining with described end key kiss.