CN106002542A - Hard grinding production process for bearing steel balls without burn marks - Google Patents
Hard grinding production process for bearing steel balls without burn marks Download PDFInfo
- Publication number
- CN106002542A CN106002542A CN201610386726.2A CN201610386726A CN106002542A CN 106002542 A CN106002542 A CN 106002542A CN 201610386726 A CN201610386726 A CN 201610386726A CN 106002542 A CN106002542 A CN 106002542A
- Authority
- CN
- China
- Prior art keywords
- machining
- pressure
- steel balls
- velocity
- bearing steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B11/00—Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor
- B24B11/02—Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor for grinding balls
- B24B11/04—Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor for grinding balls involving grinding wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a hard grinding process for bearing steel balls without burn marks. According to the hard grinding process, steel balls are sorted through a roller edge sorting machine before machining in a hard grinding work procedure, meanwhile, different machining modes on three procedure segments of low pressure and low velocity-high pressure and high velocity-medium pressure and medium velocity are adopted, therefore, the quality of the steel balls without the burn marks is guaranteed, and the machining efficiency of the steel balls is also improved. The hard grinding process for the bearing steel balls without the burn marks comprises the following steps: roller edge sorting, low-pressure and low-velocity machining, high-pressure and high-velocity machining and medium-pressure and medium-velocity machining. A coolant liquid medium adopts hard grinding liquid with the ratio of 3% to 5%; a machining die adopts a fixed plate which is made of an alloy cast iron plate, and rotating plates adopt 180-240 mesh vitrified grinding wheels; and automatic trimming of grinding wheel grooves is adopted in the process of machining to enable the depth of the grinding wheel grooves not to be changed. The machining efficiency is improved, and the steel balls with the burn marks do not appear in products subjected to hard grinding.
Description
Technical field
The present invention relates to the technical field that bearing steel ball manufactures, specially bearing steel ball without burn hard grind production technology.
Background technology
The quality of bearing quality, steel ball (rolling element) plays a significantly greater role, and the steel ball that domestic market uses is big
All there is poor reliability and the problem such as the life-span is short.The current steel ball optoelectronic detecting device defect on affecting bearing abnormal sound is the most all
Can recognize that, but the burn that hard grind operation produces, hardness ratio normal ball low about the 10HRC of hardness, manually pick by hard grind pickling
Ball is difficult to ensure that, has the defect ball of burn effectively not reject, and reliability and life-span to steel ball bring serious harm.
Summary of the invention
For the problems referred to above, bearing steel ball of the present invention is without burn hard grind production technology, before described technique is passed through processing
Dead angle ball control and the adjustment of hard grind machined parameters controls, make the generation without burn ball in the steel ball hard grinding course of processing, increase
The strong reliability of steel ball, it is ensured that the long-life of steel ball.
It is characterized in that: it comprise the steps: the cylinder edge of a knife sort → low pressure low speed processing → high-voltage high-speed processing →
Middle pressure middling speed correction is processed.Both control the entrance of the big ball before processing, the change of pressure Rotation Process, turn avoid burn ball
Generation.
Detailed description of the invention
It comprises the following steps:
, the cylinder edge of a knife sorts: by steel ball clean for heat treatment washing, put into cylinder edge of a knife grading machine, first pass through fixed dimension
Sieve plate carry out leakage sieve, prevent the bastard of different size, the cylinder being then flowed into band mesh from screening, make by the gross in steel ball
Big defect and bead can leak except clean, then through high accuracy edge of a knife separating screen, make the big ball of big more than 2 to sort
Out；
(2), low pressure low speed processing: the steel ball after the cylinder edge of a knife sorts is put in ball crusher；Processing mold: fixed plate is adopted
Using alloy cast iron plate, rotor plate uses the vitrified abrasive of 180 ~ 240 mesh；Coolant, uses the hard grinding liquid of 3 ~ 5%；Incipient stage adopts
With using the processing of low pressure low speed, process velocity 40 ~ 60 rpm, pressure 0.5 ~ 2Mpa；The course of processing uses emery wheel groove automatically to repair
Whole, in the course of processing, it is ensured that emery wheel gash depth is constant；
(3), high-voltage high-speed processing: processing about 2 hours at steel ball low pressure low speed, the heat-treatment oxidation layer of steel ball surface is the most basic
After all eliminating, improve pressure and rotating speed, process velocity 120 ~ 140 rpm, pressure 4 ~ 6Mpa；Quickly eliminate steel ball surplus, carry
High steel ball processing efficiency, keeps the automatic dressing of dresser simultaneously, it is ensured that emery wheel gash depth is constant；
, middle pressure middling speed correction processing: when also having 3 ~ 5 from finish size, reduce pressure and rotating speed, process velocity 80 ~
100 rpm, pressure 2 ~ 4Mpa；The circularity of steel ball is modified, adjusts finishing block simultaneously, make emery wheel gash depth control steel ball
The degree of depth of the 1/3 ~ 2/5 of diameter, processing is until finish size.
The innovation of the present invention is:
1, use the mode that the cylinder edge of a knife sorts before hard grind processing, and screened out the impurity in steel ball, bead etc., it is therefore prevented that processing
During stifled groove problem, screened out big ball simultaneously, prevented that indivedual ball pressurized is excessive causes burn；
2, the different cooked mode of 3 procedure segments of hard grind employing low pressure low speed heavy pressure high-speed medium-pressure middling speed, both ensured
Ensure that steel ball quality improves again steel ball processing efficiency without burn；
3, while emery wheel groove synchronizes finishing, when pressing middling speed correction processing to start in beginning, adjust finishing block reach, make
Emery wheel groove is the deepest, prevents the generation of burn ball.
Claims (4)
1. bearing steel ball is without burn hard grind production technology, it is characterised in that following steps: and the cylinder edge of a knife sorts → and low pressure low speed adds
Work → high-voltage high-speed processing → middle pressure middling speed correction processing.
2. according to right 1 require bearing steel ball without burn hard grind production technology, it is characterised in that processing before use the cylinder edge of a knife
Sort.
3. the bearing steel ball required according to right 1 is without burn hard grind production technology, it is characterised in that the course of processing uses and low forces down
Speed high-voltage high-speed is pressed the different cooked mode of 3 procedure segments of middling speed.
4. according to right 1 require bearing steel ball without burn hard grind production technology, it is characterised in that emery wheel groove synchronize finishing
While, when the most interim pressure middling speed correction processing starts, adjust finishing block reach, make emery wheel groove the deepest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610386726.2A CN106002542A (en) | 2016-06-05 | 2016-06-05 | Hard grinding production process for bearing steel balls without burn marks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610386726.2A CN106002542A (en) | 2016-06-05 | 2016-06-05 | Hard grinding production process for bearing steel balls without burn marks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106002542A true CN106002542A (en) | 2016-10-12 |
Family
ID=57089231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610386726.2A Pending CN106002542A (en) | 2016-06-05 | 2016-06-05 | Hard grinding production process for bearing steel balls without burn marks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106002542A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114643508A (en) * | 2020-12-21 | 2022-06-21 | 无锡飞云球业股份有限公司 | Efficient burn-free hard grinding operation method for steel balls |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2004101426A (en) * | 2004-01-16 | 2005-06-20 | Уль новский государственный технический университет (RU) | METHOD FOR SUBMITTING LUBRICANT AND COOLING LIQUID AT FLAT SURFACE GRINDING |
| CN1721135A (en) * | 2004-07-16 | 2006-01-18 | 上海振刚钢球制造有限公司 | Method of grinding, finish grinding precision bearing steel ball by using grinding oil and major cycle resin grinding wheel |
| DE102005004041A1 (en) * | 2005-01-27 | 2006-08-03 | Guilleaume-Werk Gmbh | Ceramic balls grinding method, for use in ball grinding machine, involves grinding balls with grinding wheel having diamond abrasive grain in ceramic bond, where ceramic bond is burnt up to specific temperature, in oxygen-poor atmosphere |
| CN101049665A (en) * | 2007-05-15 | 2007-10-10 | 山东东阿钢球集团有限公司 | Method for producing accurate steel balls |
| CN102729139A (en) * | 2012-07-10 | 2012-10-17 | 江苏力星通用钢球股份有限公司 | Steel ball grinding method of vertical grinding machine by double-face rein wheel |
-
2016
- 2016-06-05 CN CN201610386726.2A patent/CN106002542A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2004101426A (en) * | 2004-01-16 | 2005-06-20 | Уль новский государственный технический университет (RU) | METHOD FOR SUBMITTING LUBRICANT AND COOLING LIQUID AT FLAT SURFACE GRINDING |
| CN1721135A (en) * | 2004-07-16 | 2006-01-18 | 上海振刚钢球制造有限公司 | Method of grinding, finish grinding precision bearing steel ball by using grinding oil and major cycle resin grinding wheel |
| DE102005004041A1 (en) * | 2005-01-27 | 2006-08-03 | Guilleaume-Werk Gmbh | Ceramic balls grinding method, for use in ball grinding machine, involves grinding balls with grinding wheel having diamond abrasive grain in ceramic bond, where ceramic bond is burnt up to specific temperature, in oxygen-poor atmosphere |
| CN101049665A (en) * | 2007-05-15 | 2007-10-10 | 山东东阿钢球集团有限公司 | Method for producing accurate steel balls |
| CN102729139A (en) * | 2012-07-10 | 2012-10-17 | 江苏力星通用钢球股份有限公司 | Steel ball grinding method of vertical grinding machine by double-face rein wheel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114643508A (en) * | 2020-12-21 | 2022-06-21 | 无锡飞云球业股份有限公司 | Efficient burn-free hard grinding operation method for steel balls |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161012 |