CN102990085A - Surface machining method of quenched steel - Google Patents

Surface machining method of quenched steel Download PDF

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Publication number
CN102990085A
CN102990085A CN2012104815252A CN201210481525A CN102990085A CN 102990085 A CN102990085 A CN 102990085A CN 2012104815252 A CN2012104815252 A CN 2012104815252A CN 201210481525 A CN201210481525 A CN 201210481525A CN 102990085 A CN102990085 A CN 102990085A
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China
Prior art keywords
hardened steel
cutting
lathe
steel part
speed
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CN2012104815252A
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Chinese (zh)
Inventor
陈战士
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Luoyang Institute of Electro Optical Equipment AVIC
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Luoyang Institute of Electro Optical Equipment AVIC
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Priority to CN2012104815252A priority Critical patent/CN102990085A/en
Publication of CN102990085A publication Critical patent/CN102990085A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a surface machining method of quenched steel, which comprises the step of turning a quenched steel part by adopting a hard alloy cutter or a cubic boron nitride cutter under the conditions of a cutting depth of less than 0.3mm, a feeding speed of less than 0.2mm and a cutting speed of more than 94m/min, so as to machine the surface roughness of the quenched steel to reach a required precision. By using the characteristic of high turning efficiency, the machining efficiency of the surface treatment on the quenched steel part is increased. Meanwhile, during turning, strip-shaped and belt-shaped cuttings carry away heat generated during cutting, therefore, the temperature of the surface of the quenched part in the machining process is reduced, and the problem that the surface of the quenched part is burnt is avoided.

Description

A kind of method of surface finish of hardened steel
Technical field
The present invention relates to the hard turning technical field, relate in particular to a kind of method of surface finish of hardened steel.
Background technology
At present, when the surface roughness of hardened steel part is had relatively high expectations, usually adopt the method for grinding to come the hardened steel material is processed.But because in Grinding Process, feed speed and the feed speed of grinding tool is little, cutting speed is high, thereby so that grinding is consuming time longer, and the grinding tool of high-speed grinding with the high-speed friction of hardened steel part in, the part abrasive dust that gets off from the grinding of hardened steel part can be scattered in the surface of hardened steel part, so that the easy burn in the surface of hardened steel part, therefore come the hardened steel piece surface processed by grinding and have the low and poor defective of surface quality of working (machining) efficiency.
Summary of the invention
The method of surface finish that the purpose of this invention is to provide a kind of hardened steel is intended to solve the method for available technology adopting grinding hardened steel is carried out surface treatment, and the working (machining) efficiency that causes is low, the easy problem of burn in surface.
In order to realize above purpose, the technical solution adopted in the present invention is:
The technical scheme of the method for surface finish of hardened steel of the present invention is as follows:
A kind of method of surface finish of hardened steel may further comprise the steps: step 1, the hardened steel part is clamped on the spindle chuck on the lathe, and with hard alloy cutter or cubic boron nitride cutting tool clamping on the knife rest of lathe; Step 2, hard alloy cutter or cubic boron nitride cutting tool are with less than 0.3 millimeter cutting depth, less than 0.2 millimeter feed speed, cut the hardened steel part greater than the cutting speed of 94 meters per minutes.
Described hardened steel part is 45 rod iron shape parts, and the hardness of 45 rod iron shape parts is between 38~42HRC.
When the hardness of described hardened steel part was 55HRC, the cutter of clamping was cubic boron nitride cutting tool on the knife rest of lathe.
The present invention adopts hard alloy cutter or cubic boron nitride cutting tool to the hardened steel part, under less than 0.3 millimeter cutting depth, less than 0.2 millimeter feed speed, condition greater than the cutting speed of 94 meters per minutes, carry out turning processing, thereby the hardened steel surface roughness is worked into permissible accuracy, utilize the high characteristics of turning working (machining) efficiency, improve the working (machining) efficiency that the hardened steel piece surface is processed.Simultaneously because in machining, the heat during bar, banded smear metal meeting will be cut is taken away, thereby reduces the temperature of quench part surface in process, avoids occurring on the quench part surface problem of burn.
The specific embodiment
The embodiment 1 of the method for surface finish of hardened steel of the present invention: this hard turning method may further comprise the steps, step 1, the hardened steel part is clamped on the spindle chuck of lathe, and with the hard alloy cutter clamping of IC907 type on the knife rest of lathe, 150 lathes that described bed selects Switzerland Xiao Bulin to produce, lathe general power 4.5KW, maximum speed 3000r/min, main axis jerking are 0.002; Step 2, hard alloy cutter cuts the 45 rod iron shape parts of hardness as HRC38 ~ 42 take the cutting speed of 0.3 millimeter cutting depth, 94 meters per minutes and the feed speed of 0.05 millimeter revolution.The surface roughness of 45 rod iron shape parts after cutting is 0.401.
The embodiment 2 of the method for surface finish of hardened steel of the present invention: this hard turning method may further comprise the steps, step 1, the hardened steel part is clamped on the spindle chuck of lathe, and with the hard alloy cutter clamping of IC907 type on the knife rest of lathe, 150 lathes that described bed selects Switzerland Xiao Bulin to produce, lathe general power 4.5KW, maximum speed 3000r/min, main axis jerking are 0.002; Step 2, hard alloy cutter cuts the 45 rod iron shape parts of hardness as HRC38 ~ 42 take the cutting speed of 0.3 millimeter cutting depth, 157 meters per minutes and the feed speed of 0.1 millimeter revolution.The surface roughness of 45 rod iron shape parts after cutting is 0.42.
The embodiment 3 of the method for surface finish of hardened steel of the present invention: this hard turning method may further comprise the steps, step 1, the hardened steel part is clamped on the spindle chuck of lathe, and with the hard alloy cutter clamping of IC907 type on the knife rest of lathe, 150 lathes that described bed selects Switzerland Xiao Bulin to produce, lathe general power 4.5KW, maximum speed 3000r/min, main axis jerking are 0.002; Step 2, hard alloy cutter cuts the 45 rod iron shape parts of hardness as HRC38 ~ 42 take the cutting speed of 0.3 millimeter cutting depth, 200 meters per minutes and the feed speed of 0.2 millimeter revolution.The surface roughness of 45 rod iron shape parts after cutting is 0.456.
The embodiment 4 of the method for surface finish of hardened steel of the present invention: this hard turning method may further comprise the steps, step 1, the hardened steel part is clamped on the spindle chuck of lathe, and with the hard alloy cutter clamping of IC907 type on the knife rest of lathe, 150 lathes that described bed selects Switzerland Xiao Bulin to produce, lathe general power 4.5KW, maximum speed 3000r/min, main axis jerking are 0.002; Step 2, hard alloy cutter cuts the 45 rod iron shape parts of hardness as HRC38 ~ 42 take the cutting speed of 0.2 millimeter cutting depth, 157 meters per minutes and the feed speed of 0.05 millimeter revolution.The surface roughness of 45 rod iron shape parts after cutting is 0.205.
The embodiment 5 of the method for surface finish of hardened steel of the present invention: this hard turning method may further comprise the steps, step 1, the hardened steel part is clamped on the spindle chuck of lathe, and with the hard alloy cutter clamping of IC907 type on the knife rest of lathe, 150 lathes that described bed selects Switzerland Xiao Bulin to produce, lathe general power 4.5KW, maximum speed 3000r/min, main axis jerking are 0.002; Step 2, hard alloy cutter cuts the 45 rod iron shape parts of hardness as HRC38 ~ 42 take the cutting speed of 0.2 millimeter cutting depth, 157 meters per minutes and the feed speed of 0.1 millimeter revolution.The surface roughness of 45 rod iron shape parts after cutting is 0.253.
The embodiment 6 of the method for surface finish of hardened steel of the present invention: this hard turning method may further comprise the steps, step 1, the hardened steel part is clamped on the spindle chuck of lathe, and with the hard alloy cutter clamping of IC907 type on the knife rest of lathe, 150 lathes that described bed selects Switzerland Xiao Bulin to produce, lathe general power 4.5KW, maximum speed 3000r/min, main axis jerking are 0.002; Step 2, hard alloy cutter cuts the 45 rod iron shape parts of hardness as HRC38 ~ 42 take the cutting speed of 0.2 millimeter cutting depth, 157 meters per minutes and the feed speed of 0.2 millimeter revolution.The surface roughness of 45 rod iron shape parts after cutting is 0.222.
The embodiment 7 of the method for surface finish of hardened steel of the present invention: this hard turning method may further comprise the steps, step 1, the hardened steel part is clamped on the spindle chuck of lathe, and with the hard alloy cutter clamping of IC907 type on the knife rest of lathe, 150 lathes that described bed selects Switzerland Xiao Bulin to produce, lathe general power 4.5KW, maximum speed 3000r/min, main axis jerking are 0.002; Step 2, hard alloy cutter cuts the 45 rod iron shape parts of hardness as HRC38 ~ 42 take the cutting speed of 0.1 millimeter cutting depth, 200 meters per minutes and the feed speed of 0.05 millimeter revolution.The surface roughness of 45 rod iron shape parts after cutting is 0.286.
The embodiment 8 of the method for surface finish of hardened steel of the present invention: this hard turning method may further comprise the steps, step 1, the hardened steel part is clamped on the spindle chuck of lathe, and with the hard alloy cutter clamping of IC907 type on the knife rest of lathe, 150 lathes that described bed selects Switzerland Xiao Bulin to produce, lathe general power 4.5KW, maximum speed 3000r/min, main axis jerking are 0.002; Step 2, hard alloy cutter cuts the 45 rod iron shape parts of hardness as HRC38 ~ 42 take the cutting speed of 0.1 millimeter cutting depth, 200 meters per minutes and the feed speed of 0.1 millimeter revolution.The surface roughness of 45 rod iron shape parts after cutting is 0.269.
The embodiment 9 of the method for surface finish of hardened steel of the present invention: this hard turning method may further comprise the steps, step 1, the hardened steel part is clamped on the spindle chuck of lathe, and with the hard alloy cutter clamping of IC907 type on the knife rest of lathe, 150 lathes that described bed selects Switzerland Xiao Bulin to produce, lathe general power 4.5KW, maximum speed 3000r/min, main axis jerking are 0.002; Step 2, hard alloy cutter cuts the 45 rod iron shape parts of hardness as HRC38 ~ 42 take the cutting speed of 0.1 millimeter cutting depth, 200 meters per minutes and the feed speed of 0.2 millimeter revolution.The surface roughness of 45 rod iron shape parts after cutting is 0.231.
By above embodiment 1 to 9 as can be known, the key of hard turning is the selection of cutting data among the present invention.Because in the lathe turning process, cutting speed is larger on the impact of hardened steel surface quality of workpieces, but when cutting speed is worth greater than certain, its surface quality impact on part can slacken, this moment, the surface quality of hardened steel part was only relevant with feed speed, but in the certain situation of feed speed and cutting speed, the impact of cutting depth Surface Quality is very large, when constantly increasing along with cutting depth, the cutting force that cutting tool acts on the hardened steel part also increases very fast, thereby so that the hardened steel part vibrates easily, Surface Quality processing impact is very large, therefore obtain under existing process conditions through test, when cutting depth ap≤0.3mm, feed speed vf≤0.2mm, during cutting speed vc 〉=94m/min, replace grinding with turning, can obtain the hardened steel part of the thick wiping degree Ra=0.2 in surface~0.5 μ m, realize replacing grinding.Namely obtain the relation between following turning key element and the surface roughness:
Simultaneously, when the hardness of hardened steel part is 55HRC, adopt cubic boron nitride cutting tool that hardened steel is processed, can obtain better surface quality.
Hence one can see that, can be by the hard turning of following steps realization to hardened steel, and step is as follows:
Step 1 is clamped in the hardened steel part on the spindle chuck on the lathe, and with hard alloy cutter or cubic boron nitride cutting tool clamping on the knife rest of lathe; Step 2, hard alloy cutter or cubic boron nitride cutting tool are with less than 0.3 millimeter cutting depth, less than 0.2 millimeter feed speed, cut the hardened steel part greater than the cutting speed of 94 meters per minutes.

Claims (3)

1. the method for surface finish of a hardened steel is characterized in that, may further comprise the steps: step 1, the hardened steel part is clamped on the spindle chuck on the lathe, and with hard alloy cutter or cubic boron nitride cutting tool clamping on the knife rest of lathe; Step 2, hard alloy cutter or cubic boron nitride cutting tool are with less than 0.3 millimeter cutting depth, less than 0.2 millimeter feed speed, cut the hardened steel part greater than the cutting speed of 94 meters per minutes.
2. the method for surface finish of a kind of hardened steel according to claim 1 is characterized in that, described hardened steel part is 45 rod iron shape parts, and the hardness of 45 rod iron shape parts is between 38~42HRC.
3. the method for surface finish of a kind of hardened steel according to claim 1 is characterized in that, when the hardness of described hardened steel part was 55HRC, the cutter of clamping was cubic boron nitride cutting tool on the knife rest of lathe.
CN2012104815252A 2012-11-23 2012-11-23 Surface machining method of quenched steel Pending CN102990085A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104128618A (en) * 2014-07-22 2014-11-05 优德精密工业(昆山)股份有限公司 Quenched steel part dry state and wet state coordinated cutting method
CN105234429A (en) * 2015-11-10 2016-01-13 天津津航技术物理研究所 Equal-knife pattern gap and constant-linear velocity single-point diamond turning method
CN106216954A (en) * 2016-08-16 2016-12-14 马鞍山市恒久特材有限公司 A kind of processing is hardened after deep cooling the method for martensitic steel alloys cold roll completely
CN110295341A (en) * 2019-07-01 2019-10-01 广东美的白色家电技术创新中心有限公司 A kind of aluminum alloy materials and its surface treatment method and application
CN112317883A (en) * 2020-10-30 2021-02-05 共享智能机器(苏州)有限公司 High-precision machining method for machine parts

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104128618A (en) * 2014-07-22 2014-11-05 优德精密工业(昆山)股份有限公司 Quenched steel part dry state and wet state coordinated cutting method
CN105234429A (en) * 2015-11-10 2016-01-13 天津津航技术物理研究所 Equal-knife pattern gap and constant-linear velocity single-point diamond turning method
CN106216954A (en) * 2016-08-16 2016-12-14 马鞍山市恒久特材有限公司 A kind of processing is hardened after deep cooling the method for martensitic steel alloys cold roll completely
CN106216954B (en) * 2016-08-16 2017-08-25 马鞍山市恒久特材有限公司 A kind of method for processing complete martensitic steel alloys cold roll after the deep cooling that hardens
CN110295341A (en) * 2019-07-01 2019-10-01 广东美的白色家电技术创新中心有限公司 A kind of aluminum alloy materials and its surface treatment method and application
CN110295341B (en) * 2019-07-01 2022-03-04 广东美的白色家电技术创新中心有限公司 Aluminum alloy material and surface treatment method and application thereof
CN112317883A (en) * 2020-10-30 2021-02-05 共享智能机器(苏州)有限公司 High-precision machining method for machine parts

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Application publication date: 20130327