CN107309609A - A kind of production technology of small micro- precision bearing steel ball - Google Patents
A kind of production technology of small micro- precision bearing steel ball Download PDFInfo
- Publication number
- CN107309609A CN107309609A CN201710482951.0A CN201710482951A CN107309609A CN 107309609 A CN107309609 A CN 107309609A CN 201710482951 A CN201710482951 A CN 201710482951A CN 107309609 A CN107309609 A CN 107309609A
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- steel ball
- grinding
- finished product
- ball
- bearing steel
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/32—Balls
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The present invention discloses a kind of production technology of small micro- precision bearing steel ball, and main technique includes：Cold-heading → photosphere → heat treatment → hard grind → cold pickling → reinforcing → cleaning → primary grinding → precise finiss → finished product cleaning → photoelectricity outward appearance detection → rust prevention packaging etc.；Wherein precision lapping process is concentrated in closed space and carried out, and health is responsible for by special messenger's industrial dust collector in confined space, accomplishes that cleaning is dustless；Temperature is controlled at 23 ± 2 DEG C by industrial air-conditioning；When air humidity is less than 60%, by being adjusted to household sprays clear water water smoke, indoor air humidity control 60 65%.This invention ensures that the precision lapping process in small micro- bearing steel ball production technology is carried out in closed, constant temperature, dustless, moisturizing confined space all the time.Good processing environment, it is ensured that the quality of G10 grades or even G5 grades small micro- high-end bearing steel ball.
Description
Technical field
The present invention relates to bearing steel ball field, more particularly to a kind of production technology of small micro- precision bearing steel ball.
Background technology
Bearing steel ball is important base parts and components, and especially small micro- precision bearing steel ball is played in the national economic development
Great function.Under some specific conditions, it is often necessary to the steel ball of special substance, to complete under varying environment required reach
Function.Some special substance steel balls are widely used in national economy every field in fact, including 9Cr18,3Cr13 stainless
Steel, copper, aluminium, titanium alloy steel and agate, glass, Ceramic Balls etc..Their popularization and application, have not only promoted steel ball to produce industry
Development, and also promote the technology development and scientific and technological progress of relevant industries.
At present, precise finiss equipment (lapping machine), is mostly positioned over one big workshop by the production of bearing steel ball in the world
It is interior.Because rate of air circulation is big, air themperature and humidity are difficult to control.What is more, due in air it is unavoidable have dust and
Suspension, falls in lapping machine charging tray, steel ball surface can be caused to be scratched by debris, and abradant grinding fluid summer is volatile, the winter
Season is low and sticky because of temperature, and the steel ball produced is it is difficult to ensure that high-end quality requirements.
The content of the invention
It is an object of the invention to provide a kind of production technology of small micro- precision bearing steel ball, to improve the bearing steel of production
Ball quality.
To achieve the above object, present invention employs following technical scheme：
A kind of production technology of small micro- precision bearing steel ball, comprises the following steps：
1) cold-heading：Using high-speed cold heading machine and cold heading sphere mould, bearing steel wire is struck out into cold heading blank ball, the bearing
Steel wire meets the percentage by weight of above-mentioned each component；
2) photosphere：Cold heading blank ball is ground using ball grinder and photosphere grinding fluid, first cold heading blank ball
Annulus and the two poles of the earth are ground off, basic balling-up；Then further grinding, grinds off surface oxide layer, obtains photosphere base；
3) it is heat-treated：After photosphere base is cleaned up and dried, put into rotary furnace and to be carried out using controllable protective atmosphere
Temper is carried out after heating quenching, quenching, steel ball semi-finished product are obtained；
4) hard grind：After steel ball semi-finished product through Overheating Treatment are cleaned up, further ground using hard grinding machine and special grinding fluid
Mill processing, repairs the circularity and deviation from spherical form of steel ball.
5) cold pickling：Steel ball after grinding is placed in cold pickle and carries out cold pickling, the defect of steel ball surface is presented,
Reject unqualified steel ball；
6) surface Hardening Treatment：The steel ball after pickling processes are subcooled is carried out at surface peening using surface peening machine
Reason；
7) grind：By the steel ball after surface Hardening Treatment by primary grinding and precise finiss, bearing steel ball finished product is obtained；
The precise finiss is provided with cleaner, and be responsible for by special messenger in being carried out in single confined space in the confined space
Indoor sanitation, it is ensured that cleaning is dustless in confined space；The temperature of confined space is controlled at 23 ± 2 DEG C by central air-conditioning, closed
Air humidity in space is controlled in 60-65% by humidifier.
It is preferred that, the step 7) in precise finiss include lappingout and superfinishing and grind：
The lappingout comprises the following steps：Semi-finished product steel ball after primary grinding is cleaned up, then is placed into lapping machine
Middle grinding, the nog plate Stress control of the lapping machine is in 18-22KN, and the speed of mainshaft is controlled at 16-20 revs/min；Grinding efficiency
Control was at 2-3um/ hours；Grinding fluid used is water base lapping liquid, and abrasive grain used is diameter 1um diadust；When
Steel ball size apart from finished product steel ball diameter only have 0.5um when, stop grinding, lower ball simultaneously cleans up；
The superfinishing, which is ground, to be comprised the following steps：Semi-finished product steel ball after lappingout is cleaned up, then is placed into lapping machine
Grinding, the nog plate Stress control of the lapping machine is in 10-14KN, and the speed of mainshaft is controlled at 25-35 revs/min；Grinding efficiency control
System was at 0.75-0.82um/ hours；Grinding fluid used is water base lapping liquid, and abrasive grain used is micro- for diameter 0.5um diamond
Powder；When steel ball size reaches finished product steel ball diameter dimension, stop grinding, lower ball is simultaneously cleaned up.
It is preferred that, in addition to step 8) finished product cleaning：Using the dustless aviation kerosine of cleaning and the cleaning of sponge steel ball finished product
Machine is cleaned.
It is preferred that, in addition to step 9) detection of photoelectricity outward appearance：Steel ball after finished product is cleaned, it is automatic using steel ball photoelectricity
Detector is sorted to steel ball defect, rejects defective work.
It is preferred that, in addition to step 10) rust prevention packaging：The certified products sorted out are subjected to rust prevention packaging, packaging uses steel
Drop is no more than 5cm in ball Intelligent-counting automatic packaging system, packaging process.
The present invention possesses following beneficial effect：The precision lapping process of small micro- precision bearing steel ball production technology of the present invention
All the time carried out in closed, constant temperature, dustless, moisturizing confined space, temperature control is at 23 ± 2 DEG C, and air humidity is controlled in 60-
65%, and air cleaning, it is spotless.Good processing environment, it is ensured that G10 grades or even G5 grades small micro- high-end bearing steel ball
Quality.
Embodiment
The invention will be further described with reference to embodiments, and its purpose, which is only that, is best understood from the object of the invention, and
Unrestricted protection scope of the present invention.
Embodiment 1
A kind of production technology of small micro- precision bearing steel ball, comprises the following steps：
1) cold-heading：Using high-speed cold heading machine and cold heading sphere mould, bearing steel wire is struck out into cold heading blank ball, the bearing
Steel wire meets the percentage by weight of above-mentioned each component.
2) photosphere：Cold heading blank ball is ground using ball grinder and photosphere grinding fluid, first cold heading blank ball
Annulus and the two poles of the earth are ground off, basic balling-up；Then further grinding, grinds off surface oxide layer.This process obtains semi-finished product photosphere
Base.
3) it is heat-treated：After photosphere base is cleaned up and dried, put into rotary furnace and to be carried out using controllable protective atmosphere
Temper is carried out after heating quenching, quenching, steel ball semi-finished product are obtained, ball hardness value is 63-64HRC.
4) hard grind：After steel ball semi-finished product through Overheating Treatment are cleaned up, further ground using hard grinding machine and special grinding fluid
Mill processing, repairs the circularity and deviation from spherical form of steel ball.
5) cold pickling：Steel ball is placed in cold pickle and carries out cold pickling, steel ball is had when photosphere and hard grind are processed can
The slight burns that can be produced, and may some defects caused by raw material, such as crackle, pull bad defect and be in clearly
It is existing, it is easy to reject defective work using artificial naked eyes, it is ensured that the reliability of steel ball by the gross.
6) surface Hardening Treatment：The steel ball after pickling processes are subcooled is carried out at surface peening using surface peening machine
Reason；Processing parameter is：Rotating speed：20-30rpm/min, processing time：80-120min, hardness number：65-68HRC.
7) grind：By the steel ball after surface Hardening Treatment by primary grinding and precise finiss, bearing steel ball finished product is obtained,
The a diameter of 6.000mm of prepared bearing steel ball, belongs to small micro- accurate steel balls.
The precise finiss that is, in lappingout workshop, is built again in being carried out in single confined space using heat preservation plate material
One room (hereinafter referred to as room in lappingout room), installs lapping machine concentratedly and implements precise finiss in room in lappingout room, essence
It is generally in air-tight state to grind room in room；Health is responsible in the interior in room by special messenger's industrial dust collector in lappingout room, accomplishes that cleaning is dustless；
Temperature is controlled at 23 ± 2 DEG C by industrial air-conditioning；When air humidity is less than 60%, by being carried out to household sprays clear water water smoke
Regulation, indoor air humidity control in 60-65%.It ensure that the precision lapping process in small micro- bearing steel ball production technology begins
Carried out eventually under closed, constant temperature, dustless, moisturizing good environment.
Wherein, precise finiss includes lappingout and superfinishing is ground：
The lappingout comprises the following steps：Semi-finished product steel ball after primary grinding is cleaned up, then is placed into lapping machine
Middle grinding, the nog plate Stress control of the lapping machine is in 18-22KN, and the speed of mainshaft is controlled at 16-20 revs/min；Grinding efficiency
Control was at 2-3um/ hours；Grinding fluid used is water base lapping liquid, and abrasive grain used is diameter 1um diadust；When
Steel ball size apart from finished product steel ball diameter only have 0.5um when, stop grinding, lower ball simultaneously cleans up；
The superfinishing, which is ground, to be comprised the following steps：Semi-finished product steel ball after lappingout is cleaned up, then is placed into lapping machine
Grinding, the nog plate Stress control of the lapping machine is in 10-14KN, and the speed of mainshaft is controlled at 25-35 revs/min；Grinding efficiency control
System was at 0.75-0.82um/ hours；Grinding fluid used is water base lapping liquid, and abrasive grain used is micro- for diameter 0.5um diamond
Powder；When steel ball size reaches finished product steel ball diameter dimension, stop grinding, lower ball is simultaneously cleaned up.
8) finished product is cleaned：The cleaning of steel ball finished product is carried out using the dustless aviation kerosine of cleaning and sponge steel ball finished product cleaning machine
Cleaning, with protecting effect, it is to avoid the cleaning that steel ball is produced by cleaning scratch and supersonic wave cleaning machine caused by steel ball wound
Evil, steel ball cleans cleaner.
9) photoelectricity outward appearance is detected：Steel ball after the cleaning of finished product cleaning machine, it is also automatic using advanced steel ball photoelectricity
Detector is sorted to steel ball defect, and the light source that light source probe is sent when sorting, which is irradiated on steel ball, produces refraction, steel ball inspection
Surveying below disk has expanding wheel, each face of steel ball is all deployed, using image processing system, 360 degree of the surface progress to steel ball
Analysis comprehensively, the size of wound is set by software systems on computers, when the light source reflected on steel ball is handled by CPU calculating
Meet afterwards set wound sensitivity and somber sensitivity value range when, steel ball is judged as certified products.
10) rust prevention packaging：The certified products sorted out are packed, packaging is packed automatically using steel ball Intelligent-counting is
System, packaging process drop is no more than 5cm, prevents steel ball from producing bump injury during rust prevention packaging, it is ensured that the precision of steel ball
It is not damaged.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using this hair
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without passing through performing creative labour.Therefore, the invention is not restricted to implementation here
Example, those skilled in the art do not depart from improvement that scope made and change all should be according to the announcement of the present invention
Within protection scope of the present invention.
Claims (5)
1. a kind of production technology of small micro- precision bearing steel ball, it is characterised in that comprise the following steps：
1）Cold-heading：Using high-speed cold heading machine and cold heading sphere mould, bearing steel wire is struck out into cold heading blank ball, the bearing steel wire
Meet the percentage by weight of above-mentioned each component；
2）Photosphere：Cold heading blank ball is ground using ball grinder and photosphere grinding fluid, first the annulus of cold heading blank ball
And the two poles of the earth are ground off, basic balling-up；Then further grinding, grinds off surface oxide layer, obtains photosphere base；
3）Heat treatment：After photosphere base is cleaned up and dried, put into rotary furnace and to be heated using controllable protective atmosphere
Quenching, carries out temper after quenching, obtains steel ball semi-finished product；
4）Hard grind：After steel ball semi-finished product through Overheating Treatment are cleaned up, using hard grinding machine and special grinding fluid, further grinding adds
Work, repairs the circularity and deviation from spherical form of steel ball；
5）Cold pickling：Steel ball after grinding is placed in cold pickle and carries out cold pickling, the defect of steel ball surface is presented, is rejected
Unqualified steel ball；
6）Surface Hardening Treatment：Surface Hardening Treatment is carried out to the steel ball after pickling processes are subcooled using surface peening machine；
7）Grinding：By the steel ball after surface Hardening Treatment by primary grinding and precise finiss, bearing steel ball finished product is obtained；It is described
Precise finiss is provided with cleaner, and be responsible for interior by special messenger in being carried out in single confined space in the confined space
Health, it is ensured that cleaning is dustless in confined space；The temperature of confined space is controlled in 23 ± 2 DEG C, confined space by central air-conditioning
Interior air humidity is controlled in 60-65% by humidifier.
2. a kind of production technology of small micro- precision bearing steel ball according to claim 1, it is characterised in that：The step 7）
In precise finiss include lappingout and superfinishing and grind：
The lappingout comprises the following steps：Semi-finished product steel ball after primary grinding is cleaned up, then is placed into lapping machine and grinds
Mill, the nog plate Stress control of the lapping machine is in 18-22KN, and the speed of mainshaft is controlled at 16-20 revs/min；Grinding efficiency is controlled
At 2-3um/ hours；Grinding fluid used is water base lapping liquid, and abrasive grain used is diameter 1um diadust；Work as steel ball
When diametral distance finished product steel ball diameter only has 0.5um, stop grinding, lower ball is simultaneously cleaned up；
The superfinishing, which is ground, to be comprised the following steps：Semi-finished product steel ball after lappingout is cleaned up, then be placed into lapping machine grind,
The nog plate Stress control of the lapping machine is controlled at 25-35 revs/min in 10-14KN, the speed of mainshaft；Grinding efficiency control exists
0.75-0.82um/ hours；Grinding fluid used is water base lapping liquid, and abrasive grain used is diameter 0.5um diadust；
When steel ball size reaches finished product steel ball diameter dimension, stop grinding, lower ball is simultaneously cleaned up.
3. a kind of production technology of small micro- precision bearing steel ball according to claim 1, it is characterised in that：Also include step
8）Finished product is cleaned：Cleaned using the dustless aviation kerosine of cleaning and sponge steel ball finished product cleaning machine.
4. a kind of production technology of small micro- precision bearing steel ball according to claim 3, it is characterised in that：Also include step
9）Photoelectricity outward appearance is detected：Steel ball after finished product is cleaned, is sorted using steel ball photoelectricity automatic tester to steel ball defect,
Reject defective work.
5. a kind of production technology of small micro- precision bearing steel ball according to claim 4, it is characterised in that：Also include step
10）Rust prevention packaging：The certified products sorted out are subjected to rust prevention packaging, packaging uses steel ball Intelligent-counting automatic packaging system, bag
Drop is no more than 5cm during dress.
Priority Applications (1)
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|---|---|---|---|
| CN201710482951.0A CN107309609A (en) | 2017-06-22 | 2017-06-22 | A kind of production technology of small micro- precision bearing steel ball |
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| CN201710482951.0A CN107309609A (en) | 2017-06-22 | 2017-06-22 | A kind of production technology of small micro- precision bearing steel ball |
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| CN201710482951.0A Pending CN107309609A (en) | 2017-06-22 | 2017-06-22 | A kind of production technology of small micro- precision bearing steel ball |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508742A (en) * | 2019-07-29 | 2019-11-29 | 沛县祥龙矿山机械配件有限公司 | A kind of steam power plant special-purpose steel ball manufacturing process |
| CN110630640A (en) * | 2019-09-28 | 2019-12-31 | 安徽银球轴承有限公司 | Deep groove ball bearing capable of resisting oxidation, preventing rust and reducing noise |
| CN111266353A (en) * | 2018-12-04 | 2020-06-12 | 无锡飞云球业股份有限公司 | Method for cleaning precision finished steel balls |
| CN111575723A (en) * | 2020-06-03 | 2020-08-25 | 合肥力和机械有限公司 | Cold pickling device for steel ball production and use method thereof |
| CN112059542A (en) * | 2020-08-19 | 2020-12-11 | 云南昆钢耐磨材料科技股份有限公司 | Production process of high-carbon microalloyed steel ball |
| CN112658597A (en) * | 2020-11-20 | 2021-04-16 | 嘉兴钢球厂 | Steel ball production process |
| CN113378478A (en) * | 2021-06-30 | 2021-09-10 | 安庆机床有限公司 | Automatic control system of ball making machine |
| CN114589455A (en) * | 2020-12-04 | 2022-06-07 | 温州市中特钢球有限公司 | Machining process of nonmagnetic bearing steel ball |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111266353A (en) * | 2018-12-04 | 2020-06-12 | 无锡飞云球业股份有限公司 | Method for cleaning precision finished steel balls |
| CN110508742A (en) * | 2019-07-29 | 2019-11-29 | 沛县祥龙矿山机械配件有限公司 | A kind of steam power plant special-purpose steel ball manufacturing process |
| CN110630640A (en) * | 2019-09-28 | 2019-12-31 | 安徽银球轴承有限公司 | Deep groove ball bearing capable of resisting oxidation, preventing rust and reducing noise |
| CN111575723A (en) * | 2020-06-03 | 2020-08-25 | 合肥力和机械有限公司 | Cold pickling device for steel ball production and use method thereof |
| CN112059542A (en) * | 2020-08-19 | 2020-12-11 | 云南昆钢耐磨材料科技股份有限公司 | Production process of high-carbon microalloyed steel ball |
| CN112658597A (en) * | 2020-11-20 | 2021-04-16 | 嘉兴钢球厂 | Steel ball production process |
| CN114589455A (en) * | 2020-12-04 | 2022-06-07 | 温州市中特钢球有限公司 | Machining process of nonmagnetic bearing steel ball |
| CN113378478A (en) * | 2021-06-30 | 2021-09-10 | 安庆机床有限公司 | Automatic control system of ball making machine |
| CN113378478B (en) * | 2021-06-30 | 2022-11-22 | 安庆机床有限公司 | Automatic control system of ball making machine |
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