CN108555392A - The preparation method of oversize cold saw - Google Patents
The preparation method of oversize cold saw Download PDFInfo
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- CN108555392A CN108555392A CN201810595387.8A CN201810595387A CN108555392A CN 108555392 A CN108555392 A CN 108555392A CN 201810595387 A CN201810595387 A CN 201810595387A CN 108555392 A CN108555392 A CN 108555392A
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- cutter head
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- saw blade
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D65/00—Making tools for sawing machines or sawing devices for use in cutting any kind of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D63/00—Dressing the tools of sawing machines or sawing devices for use in cutting any kind of material, e.g. in the manufacture of sawing tools
- B23D63/08—Sharpening the cutting edges of saw teeth
- B23D63/12—Sharpening the cutting edges of saw teeth by grinding
- B23D63/14—Sharpening circular saw blades
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- Mechanical Engineering (AREA)
- Physical Vapour Deposition (AREA)
Abstract
The preparation method of oversize cold saw, includes the following steps：(1) heat treatment of the big matrix of saw blade；(2) the big matrix stress processing of saw blade and flatness adjustment；(3) the table mill processing of the big matrix of saw blade；(4) special-shaped cutter head welding precision is controlled；(5) low-friction coefficient dregs guiding groove is processed on cutter head；(6) the processed broken chip slot on cutter head；(7) anti-tipping blade corner angle are processed on cutter head；(8) cutting edge is processed on cutter head；(9) low-friction coefficient side is processed on cutter head；(10) cutting edge passivation processing is carried out after cutter head processing；(11) the AlTiN coating treatments after cutter head grinding and Passivation Treatment.The beneficial effects of the invention are as follows：Ceramet bit cold saw cutting thermal stability is good, has extraordinary wearability and thermal stability；It is reduced in conjunction with friction coefficient after advanced AlTiN coatings, the service life must beat significantly promoted therewith.
Description
Technical field
The present invention relates to a kind of preparation methods of oversize cold saw, belong to Metal Cutting technical field.
Background technology
The equipment and saw blade in stock size metal material (round steel diameter≤Φ 180mm) cutting field are all very general at present
And large scale metal material (round steel diameter ＞ Φ 180mm) reduces special circular sawing machine due to the saw blade of not no high-quality only
Exploitation and promotion rate.Based on large scale metal material is mainly cut off at a slow speed with bands for band at present, efficiency is low, can not meet life
Production progress, environmental pollution are big.
The treatment technology of large scale cold saw matrix is one of core technology.Firstly because saw blade is excessive, heat-treatment quenching stove,
The working ability aspect of tempering furnace, table mill, centre bore fraising process all has exceeded the manufacturing limit of stock size matrix, needs spy
Different equipment for customizing.In addition, the control of the flatness, stress variation to large scale cold saw matrix in processing procedure, helps to change
Kind matrix treatment effeciency, Improving The Quality of Products.
The development of surface-coating technology plays the improvement of cutting performance and the progress of Machining Technology for Cutting with application non-
The effect of Chang Guanjian, coated cutting tool have become the important symbol of modern high end cutter.The principle of coating is that one is coated on cutter hub
The infusible compound of layer or multilayer high-wearing feature promotes cutting performance, reaches promotion processing efficiency, extends cutter life, reduces
The purpose of production cost.Coated cutting tool can gradually develop into cutter important in cutting-resistant metal material manufacture field.
Common saw blade coating material mainly has TiN, TiAlN, AlTiN, TiCN, CrN etc..As AlTiN coatings are ground
Study carefully after achievement delivers, professional person indicates greatly concern, mesh to its excellent anti-high oxidative capacity and good performance
Before have multiple PVD methods that can prepare AlTiN coatings.With the development of science and technology the multiple stratification and nanosizing of coating so that AlTiN
The performance of coating is constantly being promoted.
AlTiN coatings have the excellent spies such as hardness is high, oxidizing temperature is high, thermohardening is good, strong adhesive force, friction coefficient are small
Property, it is ensured that cutter still has these excellent properties in high-speed cutting, current International Tool industry is promoted mainly the most
Coating.The application of developed country in overseas, AlTiN coated cutting tools is very universal.But spray of the existing technology on saw blade
Apply that effect is limited, saw blade Stress non-homogeneity itself, and existing saw blade due to rub cause use greatly during heat production it is too many,
Influence the service life of saw blade.
Invention content
The present invention grinds limited, saw blade Stress non-homogeneity itself, saw blade for the saw blade heat treatment of current technology processing, table
Heat production more the problem of causing short life during use, it is proposed that a kind of reduction friction coefficient, make on saw blade upper stress evenly,
To improve saw blade lifetime oversize cold saw preparation method.
The preparation method of oversize cold saw, includes the following steps：
(1) heat treatment of the big matrix of saw blade：The big matrix of saw blade is quenched using dedicated big stove, oil hardening,
Pressurization tabletting and tooling tempering；
(2) processing of circular saw blade substrate stress and flatness adjustment：Tempering heat treatment is carried out to matrix first, to treated
Matrix carries out leveling processing, and intrinsic silicon residual stress is made fully to be discharged, and then after without deformation table mill processing, uses
It rolls waist technique and carries out autofrettage in intrinsic silicon, it is made to resist thermal stress in use；
(3) the table mill processing of the big matrix of saw blade：Equipment is ground using the large scale table of dedicated custom, using CBN grinding wheels, profit
Surface casting skin, grinding to gauge thickness are removed with the processing method of high-speed grinding；
(4) special-shaped cutter head welding precision is controlled：Toothholder goes after casting skin to carry out high-frequency welding using the porcelain plate of special profile, and
Ensure single piece of Product jointing precision；
(5) low-friction coefficient dregs guiding groove is processed on cutter head：11 ° of dregs guiding groove radial rake, 138 ° of dregs guiding groove angle, leads
Consider the angles slot R R0.7~R1.3mm ranges to be worth doing.
(6) the processed broken chip slot on cutter head：0.45~0.60mm of width of chip-breaker, groove center away from 0.85~1.00mm,
0.22~0.35mm of groove depth；
(7) anti-tipping blade corner angle are processed on cutter head：Anti-tipping blade corner angle are 45 ° of oblique angles, symmetrical, width 0.08~
Between 0.15mm, symmetrical amount is less than 0.04mm；
(8) cutting edge is processed on cutter head：The width of cutting edge be 0.20~0.30mm, -25 ° of angle~-
20°；
(9) low-friction coefficient side is processed on cutter head：Side progress oil cooling milling apparatus processing, roughness Ra≤
0.20, it is necessary to process flank angle, side overhang, opposite welding surface tooth eminence surmount is 0.03 at rake face
Between~0.07mm；At point of a knife at the facewidth of opposite welding surface bottom, surmount is between 0.07~0.10mm；
(10) cutting edge passivation processing is carried out after cutter head processing：Progress cutting edge passivation processing, the circle of processing frequency 3~5/piece；
(11) the AlTiN coating treatments after cutter head grinding and Passivation Treatment.
(11) the AlTiN coating treatment steps in are：
S1) all cold saws are cleaned according to industry cleaning link standard；
S2 saw blade is spaced from each other with special fixture axial direction), prevents cutter head from wounding in the process；
S3) by saw blade it is clamping after be put into stove, be evacuated down to 3.0 × 10-3~6.0 × 10-3Pa；
S4 the multi sphere technology for) using the enhancing of electron gun plasma, jointly cleans sample by Ar ions and Ti ions
Bottoming；
S5 it) continuously decreases and is biased into -600V~-200V, be passed through nitrogen, the Ti/TiN for depositing 0.002mm meets transition zone
(TiN is gradually transitions by pure Ti)；
S6 the non-balance magnetically controlled sputter technology depositing Al TiN coatings of electron gun plasma asistance enhancing) are used.
Preferably, Ti and Al atomic ratios are 30 in AlTiN coating treatments:70 hot isostatic pressing titanium-aluminum alloy target is as sputtering
Target, pure Ti targets are as multi sphere target, and gas is using industrial high-purity argon gas and nitrogen.
Preferably, AlTiN coated substrates are ceramet bit.
Preferably, the deposition of AlTiN coatings is using the unbalanced magnetron sputtering technology of electron gun plasma asistance enhancing, electronics
Rifle 110~145A of electric current, 13~20A of magnetic control target current；Vacuum degree when coating deposits：0.08~0.45Pa, nitrogen flow：35~
80cm3/min, substrate bias：- 50V~-80V, 15~50min of sedimentation time.
It is an advantage of the invention that：Compared with traditional cold saw, solve large scale matrix heat treatment, centre bore fraising,
The problems such as table mill, leveling, welding, sharpening.In addition, effectively improving the stabilization of cutting process by the optimization design of angle
Property；Secondly, by optimizing teeth portion structure profile, the appearance bits ability in cutting large size materials process is effectively improved, allows and cuts
Face is more smooth.Again, AlTiN coatings are that the cutting life of oversize cold saw is laid a good foundation.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 is the teeth portion structure chart of the present invention.
Specific implementation mode
The technical solution further illustrated the present invention below in conjunction with the accompanying drawings.
1 oversize cold saw of the present invention of embodiment includes saw bit matrix 1 and saw-tooth tool bit 2 with mounting hole 11.It is described
The outer rim of saw bit matrix 1 be circumferentially with sawtooth 12, bottom of the tooth chip pocket 3, the saw-tooth tool bit 2 are equipped between adjacent saw-tooth 12
It is logical including rake face 21, flank 22, radial welding surface 23, circumferential welding surface 24 and cutter head side 26, the saw-tooth tool bit 2
Radial welding surface 23, circumferential the meeting on the toothholder 121 in the direction of cutting mounted on the sawtooth 12 of welding surface 24 are crossed, it is described
Rake face 21 be divided into cutting face 211, clearance surface 212, filings-breaking surface 213 and guide support face 214 from top to bottom, it is described
The flank 22 of cutting face 211 and saw-tooth tool bit 2 meet to cutting direction coincident, i.e. rake face 21 and flank 22
Cutting edge of the cutting face of junction as saw-tooth tool bit, and filings-breaking surface 213 is connected with clearance surface 212 by arc surface,
213 lower section of filings-breaking surface is connected with guide support face 214, and the guide support face 214 is parallel with radial welding surface 23.
The bottom edge of the radial welding surface 23 is connected by one of fillet and the circumferential welding surface 24 edge
It connects, and the angle between the radial welding surface 23 and circumferential welding surface 24 is right angle or acute angle.Radial welding surface 23 is big
Radially extending along matrix is caused, circumferential welding surface 24 is substantially along the circumferentially extending of matrix.
The saw-tooth tool bit flank and cutter head side upper end intersection cuts out anti-tipping blade corner angle 221.
211 left and right ends of saw-tooth tool bit cutting face, which process to resist, collapses corner angle 215.
The preparation method of oversize cold saw, includes the following steps：
(1) heat treatment of the big matrix of saw blade：The big matrix of saw blade is quenched using dedicated big stove, oil hardening,
Pressurization tabletting and tooling tempering；
(2) processing of circular saw blade substrate stress and flatness adjustment：Tempering heat treatment is carried out to matrix first, level(l)ing machine is to place
Matrix after reason carries out leveling processing, and intrinsic silicon residual stress is made fully to be discharged, then by without deformation table mill processing
Afterwards, autofrettage is carried out in intrinsic silicon using rolling waist technique, it is made to resist thermal stress in use；
(3) the table mill processing of the big matrix of saw blade：Using CBN grinding wheels, surface is removed using the processing method of high-speed grinding
Casting skin, grinding to gauge thickness；
(4) special-shaped cutter head welding precision is controlled：Toothholder goes to utilize special profile after casting skin on Full-automatic high frequency bonding machine
Porcelain plate carry out high-frequency welding, and ensure single piece of Product jointing precision；
(5) low-friction coefficient dregs guiding groove is processed on cutter head：11 ° of dregs guiding groove radial rake, 138 ° of dregs guiding groove angle, leads
Consider the angles slot R R0.7~R1.3mm ranges to be worth doing.
(6) the processed broken chip slot on cutter head：0.45~0.60mm of width of chip-breaker, groove center away from 0.85~1.00mm,
0.22~0.35mm of groove depth；
(7) anti-tipping blade corner angle are processed on cutter head：Anti-tipping blade corner angle are 45 ° of oblique angles, symmetrical, width 0.08~
Between 0.15mm, symmetrical amount is less than 0.04mm；
(8) cutting edge is processed on cutter head：The width of cutting edge be 0.20~0.30mm, -25 ° of angle~-
20°；
(9) low-friction coefficient side is processed on cutter head：Side progress oil cooling milling apparatus processing, roughness Ra≤
0.20, it is necessary to process flank angle, side overhang, opposite welding surface tooth eminence surmount is 0.03 at rake face
Between~0.07mm；At point of a knife at the facewidth of opposite welding surface bottom, surmount is between 0.07~0.10mm；
(10) cutting edge passivation processing is carried out after cutter head processing：Cutting edge passivation processing, processing frequency are carried out using paralysis facility
The circle of rate 3~5/piece；
(11) the AlTiN coating treatments after cutter head grinding and Passivation Treatment.
(11) the TiAlN coating treatment steps in are：
S1) all cold saws are cleaned according to industry cleaning link standard；
S2 saw blade is spaced from each other with special fixture axial direction), prevents cutter head from wounding in the process；
S3) by saw blade it is clamping after be put into stove, be evacuated down to 3.0 × 10-3~6.0 × 10-3Pa；
S4 the multi sphere technology for) using the enhancing of electron gun plasma, jointly cleans sample by Ar ions and Ti ions
Bottoming；
S5 it) continuously decreases and is biased into -600V~-200V, be passed through nitrogen, the Ti/TiN for depositing 0.002mm meets transition zone
(TiN is gradually transitions by pure Ti)；
S6 the non-balance magnetically controlled sputter technology depositing Al TiN coatings of electron gun plasma asistance enhancing) are used.
Ti and Al atomic ratios are 30 in AlTiN coating treatments:70 hot isostatic pressing titanium-aluminum alloy target is pure as sputtering target material
Ti targets are as multi sphere target, and gas is using industrial high-purity argon gas and nitrogen.
AlTiN coated substrates are ceramet bit.
The deposition of AlTiN coatings is using the unbalanced magnetron sputtering technology of electron gun plasma asistance enhancing, electron gun current
110~145A, 13~20A of magnetic control target current；Vacuum degree when coating deposits：0.08~0.45Pa, nitrogen flow：35~80cm3/
Min, substrate bias：- 50V~-80V, 15~50min of sedimentation time.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Range is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also includes art technology
Personnel according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (5)
1. the preparation method of oversize cold saw, includes the following steps：
(1) heat treatment of the big matrix of saw blade：The big matrix of saw blade is quenched using dedicated big stove, oil hardening, is pressurizeed
Tabletting and tooling tempering；
(2) processing of circular saw blade substrate stress and flatness adjustment：Tempering heat treatment is carried out to matrix first, to treated matrix
Leveling processing is carried out, intrinsic silicon residual stress is made fully to be discharged, then after without deformation table mill processing, using rolling waist
Technique carries out autofrettage in intrinsic silicon, it is made to resist thermal stress in use；
(3) the table mill processing of the big matrix of saw blade：Height is utilized using CBN grinding wheels using the large scale table mill equipment of dedicated custom
The processing method of speed grinding removes surface casting skin, grinding to gauge thickness；
(4) special-shaped cutter head welding precision is controlled：Toothholder goes after casting skin to carry out high-frequency welding using the porcelain plate of special profile, and ensures
Single piece of Product jointing precision；
(5) low-friction coefficient dregs guiding groove is processed on cutter head：11 ° of dregs guiding groove radial rake, 138 ° of dregs guiding groove angle, dregs guiding groove
The angles R R0.7~R1.3mm ranges.
(6) the processed broken chip slot on cutter head：0.45~0.60mm of width of chip-breaker, groove center is away from 0.85~1.00mm, groove depth
Spend 0.22~0.35mm；
(7) anti-tipping blade corner angle are processed on cutter head：Anti-tipping blade corner angle are 45 ° of oblique angles, and symmetrical, width is in 0.08~0.15mm
Between, symmetrical amount is less than 0.04mm；
(8) cutting edge is processed on cutter head：The width of cutting edge is 0.20~0.30mm, -25 °~-20 ° of angle；
(9) low-friction coefficient side is processed on cutter head：Side progress oil cooling milling apparatus processing, roughness Ra≤0.20,
Have to process flank angle, side overhang, at rake face opposite welding surface tooth eminence surmount 0.03~
Between 0.07mm；At point of a knife at the facewidth of opposite welding surface bottom, surmount is between 0.07~0.10mm；
(10) cutting edge passivation processing is carried out after cutter head processing：Progress cutting edge passivation processing, the circle of processing frequency 3~5/piece；
(11) the AlTiN coating treatments after cutter head grinding and Passivation Treatment.
2. the preparation method of cutting stainless steel cold saw as described in claim 1, it is characterised in that：AlTiN in step (11)
Coating treatment step is：
S1) all cold saws are cleaned according to industry cleaning link standard；
S2 saw blade is spaced from each other with special fixture axial direction), prevents cutter head from wounding in the process；
S3) by saw blade it is clamping after be put into stove, be evacuated down to 3.0 × 10-3~6.0 × 10-3Pa；
S4 the multi sphere technology for) using the enhancing of electron gun plasma, cleaning bottoming is carried out by Ar ions and Ti ions to sample jointly；
S5 it) continuously decreases and is biased into -600V~-200V, be passed through nitrogen, the Ti/TiN for depositing 0.002mm meets transition zone, Ti/
TiN meets transition zone and is gradually transitions TiN by pure Ti；
S6 the non-balance magnetically controlled sputter technology depositing Al TiN coatings of electron gun plasma asistance enhancing) are used.
3. the preparation method of oversize cold saw as claimed in claim 2, it is characterised in that：In AlTiN coating treatments Ti and
Al atomic ratios are 30:70 hot isostatic pressing titanium-aluminum alloy target uses work as sputtering target material, pure Ti targets as multi sphere target, gas
Industry high-purity argon gas and nitrogen.
4. the preparation method of oversize cold saw according to claim 3, it is characterised in that：AlTiN coated substrates are gold
Belong to ceramic cutter head.
5. the preparation method of cutting stainless steel cold saw as claimed in claim 3, it is characterised in that：The deposition of AlTiN coatings is adopted
The unbalanced magnetron sputtering technology enhanced with electron gun plasma asistance, 110~145A of electron gun current, magnetic control target current 13~
20A；Vacuum degree when coating deposits：0.08~0.45Pa, nitrogen flow：35~80cm3/min, substrate bias：- 50V~-80V,
15~50min of sedimentation time.
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| CN201810595387.8A CN108555392A (en) | 2018-06-11 | 2018-06-11 | The preparation method of oversize cold saw |
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| CN201810595387.8A CN108555392A (en) | 2018-06-11 | 2018-06-11 | The preparation method of oversize cold saw |
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Family
ID=63553508
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317752A (en) * | 2018-11-23 | 2019-02-12 | 成都壹佰科技有限公司 | A kind of processing technology of cold saw blade |
| CN114346322A (en) * | 2021-12-08 | 2022-04-15 | 江阴金缘锯业有限公司 | Preparation process of bimetallic strip saw blade |
| CN115178986A (en) * | 2022-08-04 | 2022-10-14 | 内蒙古一机集团瑞特精密工模具有限公司 | Method for manufacturing caragana microphylla harvester blade |
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| CN115178986A (en) * | 2022-08-04 | 2022-10-14 | 内蒙古一机集团瑞特精密工模具有限公司 | Method for manufacturing caragana microphylla harvester blade |
| CN115178986B (en) * | 2022-08-04 | 2024-02-20 | 内蒙古一机集团瑞特精密工模具有限公司 | Manufacturing method of caragana microphylla harvester blade |
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