CN201205625Y

CN201205625Y - Indexable helical teeth annular gear disk milling cutter

Info

Publication number: CN201205625Y
Application number: CNU2008200901205U
Authority: CN
Inventors: 刘毅; 陈小杰; 张国福; 李晓双; 韩以滨; 李万荣
Original assignee: Harbin No1 Tool Making Co Ltd
Current assignee: Harbin No1 Tool Making Co Ltd
Priority date: 2008-06-03
Filing date: 2008-06-03
Publication date: 2009-03-11
Anticipated expiration: 2018-06-03

Abstract

The utility model discloses a rotating disc milling cutter which is used for semi-finishing various module involute internal gears with helical teeth. All blades of the milling cutter are connected by blade lapping. According to such parameters as the module, the pressure angle of a processed gear, and the like, the profile coordinates of the milling cutter are determined, and the diameter and the width of the milling cutter are specifically determined according to machining space. The top edge of the milling cutter adopts a rectangle blade, a cutting edge is grinded into a broken line and a curve without any front angles and can be translocated for four times; and a side edge adopts a square blade without any front angles, and can be translocated for eight times. The available tooth number of the top edge is twice as large as that of the side edge. The rotating disc milling cutter belongs to an efficient milling cutter, which can strictly control the profile error of the milling cutter, can guarantee the general accuracy of the milling cutter, can ensure the accuracy of the processed gear profile lines, and can lead even and uniform allowance for finish machining. The service life of the cutter is prolonged by more than ten times, thus greatly increasing the production efficiency.

Description

Indexable helical teeth internal gear disc milling cutter

Technical field

The utility model relates to a kind of milling cutter, specifically is a kind of indexable half finish-milling cutter that is used to process various modulus helical teeth internal gears, belongs to efficient semifinishing milling cutter.

Background technology

In recent years, the development of the wind-power electricity generation project of China was swift and violent.Gear is the important component part of wind power plant as one of mechanically operated main core component, is the focus of industry so improve its working (machining) efficiency always.And the processing method that semifinishing is in the past adopted is for to refer to the milling of type milling cutter or to finish semifinishing with the pinion cutter gear shaping with high-speed steel.These several processing method tool wears are fast, and the life-span is low, and working (machining) efficiency is low, can not satisfy user's processing request.

Summary of the invention

The purpose of this utility model is at the deficiencies in the prior art, and hard alloy rotatable helical teeth internal gear dish type milling cutter a kind of reasonable in design, simple and compact for structure is provided, and fundamentally solves the drawback of aforementioned cutter.

In order to achieve the above object, the technical solution adopted in the utility model is: a kind of indexable helical teeth internal gear disc milling cutter, by cutter hub, blade, plum blossom screw are assembled, it is characterized in that: blade by screws clamp on cutter hub, and corresponding with the flute profile line of institute processing parts involute helical teeth internal gear, adjacent knife blades is staggered, and has chip area 9 on the cutter hub.

The utility model is reasonable in design, and is simple and compact for structure, belongs to efficient milling cutter, and molded lines error that can strict control milling cutter has guaranteed the overall accuracy of milling cutter, has guaranteed that the gear molded lines that processes is accurate, gives accurately machined allowance even, consistent.Cutting plate for milling cutters holotype overlap joint is finished the semi-finished high-efficient milling of gear, and cutter life improves more than ten times, greatly enhances productivity.This milling cutter is the at present domestic and international ideal homemade cutter of the various modulus internal gears of semifinishing.

Description of drawings

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

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the right view of Fig. 1;

Fig. 4 is each blade molded lines overlap joint schematic diagram of the utility model;

Fig. 5 is a round end blade schematic diagram;

Fig. 6 is a square toes blade schematic diagram;

Fig. 7 is the vertical view of Fig. 5;

Fig. 8 is the vertical view of Fig. 6;

The specific embodiment

Below in conjunction with accompanying drawing example of the present utility model is described in further detail.

In Fig. 1-Fig. 8 as seen, the utility model is a kind of indexable helical teeth internal gear disc milling cutter, by cutter hub 1, blade 2,3,4,6,7,8, plum blossom screw 5 are assembled, blade 2,3,4,6,7,8 is clamped on the cutter hub 1 by screw 5, and corresponding with the flute profile line of institute processing parts involute helical teeth internal gear, adjacent knife blades is staggered, and has chip area 9 on the cutter hub 1.Milling cutter left side angle of throat sheet 3,4, milling cutter right side angle of throat sheet 7,8 are square blade, no anterior angle, round end blade 2,6 is the rectangle blade, by two identical blade overlap joints is one group, constitute one group of effective tooth, mutual alignment in every group between each blade is arranged and is interspersed, and six groups of effective teeth are evenly distributed on the milling cutter circumferential slopes.

The top sword of the milling cutter of Fig. 1 shows three groups of effective teeth, and all the other cutters tooth show one group of effective tooth.2,6 is top angle of throat sheet, and 5 is screw, and 9 is chip area.3,4 is left side side edge blade; 7,8 is right side side edge blade, and each blade is installed on the cutter hub 1 by screw 5, and for making stable cutting, the relative position of each cutter tooth is staggered.

Fig. 2 shows whole 6 groups of effective teeth of the left side side edge on the milling cutter and the whole 12 groups of effective teeth of top, left side sword.Wherein 3,4 is left side side edge blade; For making stable cutting, the relative position of each cutter tooth is staggered.

Fig. 3 shows whole 6 groups of effective teeth of the right side side edge on the milling cutter and the whole 12 groups of effective teeth of top, right side sword.Wherein 7,8 is right side side edge blade, and the relative position of each cutter tooth is staggered.9 is chip area, drives big chip area, has increased effective chip removal space of milling cutter, makes chip removal smooth and easy, simple and compact for structure.

In Fig. 4, hard alloy rotatable helical teeth internal gear disc milling cutter molded lines length and angle determine according to processed gear parameter, among the figure 2,3,4,6,7,8 totally six blades form whole molded lines of work piece by overlapping mode.Blade exchange is convenient, transposition is flexible, the location is reliable.

Fig. 5 is round end blade 2,6 front views, is used for the milling cutter top cutting edge, and tangential the installation can be born big resistance to cutting.

Fig. 6 is a rectangle blade 3,4,7,8, is milling cutter left side cutting edge and right side cutting edge.

All blades of the present utility model all adopt overlapping mode to connect, and accurately are overlapped to form the molded lines of processed gear, then whole molded lines are rationally cut apart, and use some carbide chips to be overlapped to form whole molded lines, are designed to a profile milling cutter.Space angle, milling cutter external diameter and the molded lines error of the blade of strict control milling cutter in the process of processing to guarantee the overall accuracy after milling cutter assembles, guarantee that the internal gear molded lines that processes satisfies user's requirement.The blade employing is tangential as can be seen among Fig. 1, Fig. 2, Fig. 3 installs, and cutting force direction carbide alloy cross section is big, compressive resistance intensity height, thereby can carry out big cutting-in, big feed.Cutting plate for milling cutters adopts screw 5 to install, and the cutting force that produces during by cutting clamps, and along with the increase of cutting force, clamping force increases, and has saved clamping element.Big chip area 9 left by milling cutter, increased effective chip removal space of milling cutter, makes chip removal smooth and easy, simple and compact for structure.

Milling cutter top sword adopts rectangle blade 2,6 among Fig. 5, and top angle of throat sheet cutting edge is connected with curve transition by broken line, both can guarantee the complete overlap joint of milling cutter top sword holotype line, can realize that again the indexable number of times of blade is 4 times, has effectively utilized the blade of blade.The intensity situation of looking cutter hub adopts thicker blade as far as possible, can bear big resistance to cutting.

Be left side side edge blade 3,4 and the right side edge blade 7,8 of milling cutter shown in Fig. 6, no anterior angle is carbide chip.Adopt square blade, no anterior angle, indexable number of times is 8 times, utilizes the transposition number of times of indexable insert tip, throw away tip to greatest extent.Cut briskly, transposition is flexible.

Guaranteeing milling cutter intensity and chip removal smoothly under the prerequisite, top sword number of effective actual teeth is 2 times of circumference number of effective actual teeth, greatly improves working (machining) efficiency.

Claims

1, a kind of indexable helical teeth internal gear disc milling cutter, by cutter hub (1), blade (2,3,4,6,7,8), plum blossom screw (5) are assembled, it is characterized in that: blade (2,3,4,6,7,8) is clamped on the cutter hub (1) by screw (5), and it is corresponding with the flute profile line of institute processing parts involute helical teeth internal gear, adjacent knife blades is staggered, and has chip area (9) on the cutter hub (1).

2, indexable helical teeth internal gear disc milling cutter according to claim 1, it is characterized in that: milling cutter left side angle of throat sheet (3,4), milling cutter right side angle of throat sheet (7,8) are square blade, no anterior angle, round end blade (2,6) is the rectangle blade, by two identical blade overlap joints is one group, constitute one group of effective tooth, the mutual alignment in every group between each blade is arranged and is interspersed, and six groups of effective teeth are evenly distributed on the milling cutter circumferential slopes.