CN211804048U

CN211804048U - Novel high-efficient slotting cutter

Info

Publication number: CN211804048U
Application number: CN201922167315.6U
Authority: CN
Inventors: 王宇; 姜忠南; 盖竹兴
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-10-30
Anticipated expiration: 2029-12-06

Abstract

The utility model provides a novel high-efficiency slotting cutter, which comprises a cutter head, a tailstock, cutter teeth, blades and screws, wherein the cutter head and the cutter bar are detachably connected, the cutter teeth are distributed in a stepped manner in the early axial direction, and are two layers, each layer of the cutter teeth respectively comprises 3 cutter teeth, and the blades are fixed on the cutter teeth through the screws; the utility model discloses be applied to the machining field, be favorable to the chip removal, restrain the production of long-pending bits tumour, it is lower to the lathe power requirement, improved the shock resistance of cutter in the course of working, reduce the cutting force, adopt unequal pitch and double-deck radial structure, avoid the resonance phenomenon that produces in the course of working, reduce the vibration, reasonable sword tooth density is selected and has been ensured that the cutter body has sufficient appearance bits space, and double-deck radial structure has improved positioning accuracy and machining efficiency.

Description

Novel high-efficient slotting cutter

Technical Field

The utility model relates to a novel milling cutter is inserted to high efficiency belongs to the machining field.

Background

The plunge milling processing mode is unique, so that the plunge milling processing method has a plurality of advantages; the plunge milling mode has high metal removal amount, is very suitable for parts which are difficult to machine and have complex structures, and is particularly widely applied to products such as aerospace engines, water turbine buckets and the like. When the plunge milling mode is adopted for processing, the cutting allowance change is large in the milling process, the metal removing amount is large, large cutting force is needed, the cutter is affected by mechanical impact, the processing precision of a processed part is affected, the product quality is reduced, and the service life of the cutter is shortened.

To above problem, the utility model provides a novel milling cutter is inserted to high efficiency to impulse turbine's the production material stainless steel 0Cr13 of bucket is the research object, carries out tooth pitch ladder slotting cutter design and dynamic behavior analysis not that vary, for improving surface machining quality, reduce workpiece surface's crackle, improve positioning accuracy and machining efficiency, also has significant to the equipment construction of china's hydroelectric power industry simultaneously.

Disclosure of Invention

The utility model aims at providing a novel milling cutter is inserted to high efficiency.

In order to solve the above problem, the utility model adopts the following technical scheme:

the utility model relates to a novel milling cutter is inserted to high efficiency, a serial communication port, it includes tool bit, tailstock, sword tooth, blade, screw, the tool bit be double-deck axial stair structure.

Further: the cutter teeth are distributed in a stepped mode in the axial direction, the first layer and the second layer respectively comprise 3 cutter teeth, and the blades are fixed on the cutter teeth through screws.

Further: the slotting cutter is an unequal pitch slotting cutter, the angles of the cutter teeth of the first layer are 0 degrees, 117 degrees and 237 degrees, and the angles of the cutter teeth of the second layer can be 58.5 degrees, 177 degrees and 298.5 degrees according to the angles of the first layer.

Further: the slotting and milling cutter adopts a milling cutter provided with an indexable insert, the material of the milling cutter is alloy steel 42CrMo, the insert is independent of the cutter body, the material of the insert is YW type hard alloy, and the insert can be replaced at any time according to different processed materials.

Further: the axial step distance of the plunge milling cutter is larger than the machining error, and the axial step distance is set to be 9mm in order to ensure that the plunge milling cutter has enough strength.

Further: the plunge milling cutter adopts positive and negative rake angles, namely, the axial rake angle is positive, the radial rake angle is negative, the value range of the axial rake angle is 0-5 degrees, and the value range of the radial rake angle is-12-2 degrees.

The beneficial effects of the utility model reside in that:

the utility model relates to a novel milling cutter is inserted to high efficiency, but be equipped with transposition blade, the blade is independent of the cutter body, but have the coating, standardized characteristics, and the material of blade can be changed at any time according to the demand by the processing work piece, use positive negative rake angle (axial rake angle is positive, radial rake angle is negative), be favorable to the chip removal, restrain the production of long-pending bits tumour, it is lower to the lathe power requirement, the shock resistance of cutter in the course of working has been improved, reduce the cutting force, resonance phenomenon for avoiding producing in the course of working, reduce the vibration, adopt unequal tooth pitch and double-deck radial structure, reasonable sword tooth density selection has ensured that the cutter body has sufficient chip holding space, double-deck radial structure has improved positioning accuracy and machining efficiency.

Drawings

FIG. 1 is a three-dimensional view of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a left side view of the present invention;

fig. 4 is a top view of the present invention;

fig. 5 is a comparative graph of the milling force of the present invention;

fig. 6 is a comparison graph of milling temperature of the present invention.

Detailed Description

The technical solution of the present invention is further described below with reference to the embodiments, but not limited thereto, and all modifications or equivalent replacements of the technical solution of the present invention may be made without departing from the spirit and scope of the technical solution of the present invention.

Detailed description of the invention

The present embodiment is described with reference to fig. 1 to 6, and the novel high-efficiency slotting cutter according to the present embodiment is characterized in that: the novel tool bit comprises a tool bit (1), a tailstock (2), tool teeth (3), a blade (4) and a screw (5), wherein the tool bit is of a double-layer axial stepped structure.

More specifically: the cutter teeth (3) are distributed in a stepped mode in the axial direction, the first layer and the second layer respectively comprise 3 cutter teeth (3), and the blades (4) are fixed on the cutter teeth through screws (5).

More specifically: the slotting cutter is an unequal-pitch slotting cutter, the angle of the cutter teeth (3) of the first layer is 0 degree, 117 degrees and 237 degrees, and the angle of the cutter teeth (3) of the second layer can be 58.5 degrees, 177 degrees and 298.5 degrees according to the angle of the first layer.

More specifically: the slotting and milling cutter adopts a milling cutter provided with an indexable insert (4), the material is alloy steel 42CrMo, the insert (4) is independent of the cutter body, and the material is YW type hard alloy.

More specifically: the axial step distance of the plunge milling cutter is larger than the machining error, and the axial step distance is set to be 9mm in order to ensure that the plunge milling cutter has enough strength.

More specifically: the plunge milling cutter adopts positive and negative rake angles, namely, the axial rake angle is positive, the radial rake angle is negative, the value range of the axial rake angle is 0-5 degrees, and the value range of the radial rake angle is-12 degrees to-2 degrees.

Detailed description of the invention

The utility model discloses use X direction milling power curve as the example to analyze, analysis milling power's curve in the Deform aftertreatment module, figure 5 is the ordinary slotting cutter milling power and ladder slotting cutter milling power's change curve chart under the same processing parameter, and through the analysis comparison, can discover the milling power of picture X direction, the milling power that milling cutter was inserted to the ladder promptly is less than ordinary milling cutter's milling power of inserting.

Analyzing fig. 6, it can be seen that the temperature curves of the two graphs are periodically changed, mainly because the tool is not cut before 0.1s, and then the temperature is changed correspondingly with the change of the instantaneous cutting amount of the tool, and at the same time, the temperature of the machining area is shown to be increased, because the friction between the tool and the workpiece is increased due to the wear of the tool during the machining process, and the temperature is increased. Through analysis and comparison, the milling temperature of the stepped slotting cutter can be found to be lower than that of the common slotting cutter.

Detailed description of the invention

The utility model discloses establish the optimum distribution function that the tooth pitch that varies inserted milling cutter to select suitable evaluation index, can learn through the analysis that the evaluation index of the optimum distribution function of inserted milling processing can select the surface quality of processing part is optimum, the life-span of cutter is the longest, machining efficiency is the biggest and the in-process vibration minimum etc. can find out the vibration in the processing through the analysis, can influence indexes such as work piece surface quality, cutter life-span and machining efficiency.

The utility model relates to a novel milling cutter is inserted to high efficiency, in the course of working, when cutting parameter changes greatly, because the tool bit can receive mechanical shock, consequently selects tooth pitch that varies to insert milling cutter, can improve surface finish quality, reduce workpiece surface's crackle.

A double-layer radial structure is adopted, secondary processing is avoided, and positioning accuracy and processing efficiency are improved; the milling cutter is provided with the indexable insert, the insert is independent of the cutter body, and the milling cutter has the characteristics of coating, standardization and universalization.

The positive rake angle and the negative rake angle (the axial rake angle is positive, and the radial rake angle is negative) are used, so that chip removal is facilitated, the requirement on the power of a machine tool for inhibiting generation of accumulated chip lumps is low, the impact resistance of the cutter in the machining process is improved, the cutting force is reduced, the resonance phenomenon generated in the machining process is avoided, and vibration is reduced.

Claims

1. The utility model provides a novel milling cutter is inserted to high efficiency which characterized in that, it includes tool bit (1), tailstock (2), sword tooth (3), blade (4), screw (5), tool bit (1) be double-deck axial stair structure.

2. The new high efficiency slotting cutter according to claim 1 wherein: the cutter teeth (3) are distributed in a stepped mode in the axial direction, the first layer and the second layer respectively comprise 3 cutter teeth (3), and the blades (4) are fixed on the cutter teeth through screws (5).

3. The new high efficiency slotting cutter according to claim 1 wherein: the slotting cutter is an unequal-pitch slotting cutter, the angle of the cutter teeth (3) of the first layer is 0 degree, 117 degrees and 237 degrees, and the angle of the cutter teeth (3) of the second layer can be 58.5 degrees, 177 degrees and 298.5 degrees according to the angle of the first layer.

4. The new high efficiency slotting cutter according to claim 1 wherein: the slotting and milling cutter adopts a milling cutter provided with an indexable insert (4), the material is alloy steel 42CrMo, the insert (4) is independent of the cutter body, and the material is YW type hard alloy.

5. The new high efficiency slotting cutter according to claim 1 wherein: the axial step distance of the plunge milling cutter is larger than the machining error, and the axial step distance is set to be 9mm in order to ensure that the plunge milling cutter has enough strength.

6. The new high efficiency slotting cutter according to claim 1 wherein: the plunge milling cutter adopts positive and negative rake angles, namely, the axial rake angle is positive, the radial rake angle is negative, the value range of the axial rake angle is 0-5 degrees, and the value range of the radial rake angle is-12-2 degrees.