CN111822955B - Machining process of flange integrated linear bearing - Google Patents
Machining process of flange integrated linear bearing Download PDFInfo
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- CN111822955B CN111822955B CN202010663298.XA CN202010663298A CN111822955B CN 111822955 B CN111822955 B CN 111822955B CN 202010663298 A CN202010663298 A CN 202010663298A CN 111822955 B CN111822955 B CN 111822955B
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- 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
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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
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Abstract
The processing technology of the flange integrated linear bearing comprises the steps of preprocessing, spheroidizing annealing high-quality metal wire rods, controlling the hardness to be 75-80HRB, providing phosphating and saponification treatment of a protective film for metal discs, cutting off the high-quality metal wire rods into small sections of stock columns by adopting a multi-station cold header, ensuring that notches are smooth, upsetting flanges, upsetting the stock columns out of flanges by adopting the multi-station cold header, extruding, performing rough and forward combined extrusion by adopting the multi-station cold header, leaving about 1-3mm at the bottom of a flange surface without extrusion, punching holes, removing waste materials with the bottom of about 1-3mm by adopting the multi-station cold header, machining, quenching and polishing the outer end of the integrated linear bearing. The machining comprises quenching and polishing, wherein the machining is carried out on the excircle, the end face, the inner hole and the inner cutting groove of the inner hole and the excircle of the linear bearing before the quenching, the flange mounting hole is drilled, expanded and countersunk after the machining, and the inner and the outer circles of the clamping flange are polished after the quenching.
Description
Technical Field
The invention relates to the field of bearing manufacturing, in particular to a processing technology of an integrated linear bearing.
Background
At present, a linear bearing is a linear motion system and is used for matching an infinite linear stroke with a cylindrical shaft. Because the bearing ball is in point contact with the bearing outer sleeve, the steel ball rolls with extremely small friction resistance, so that the linear bearing has small friction and is relatively stable, does not change along with the speed of the bearing, and can obtain stable linear motion with high sensitivity and high precision. Linear bearings also have their limitations with the most important being poor bearing impact load capacity and also poor load carrying capacity, and secondly the linear bearings are subject to high vibration and noise when moving at high speed. Linear bearings are widely used as sliding parts in industrial machines such as electronic devices, multi-axis machine tools, tensile testing machines, textile machines, food packaging machines, and printing machines.
At present stage linear bearing's processing mode, it is earlier through punching press, drilling, tapping formation flange face, then uses with cylinder axle threaded connection cooperation, and the waste material that produces through this kind of mode processing is more, utilizes the metal of smelting with the waste material again, makes high-quality metal again and increases a large amount of manpower and materials of consumption. And because flange and cylinder axle are threaded connection, be clearance fit between the screw thread, can't guarantee the straightness that hangs down to under the effect of long-term atress, the flange drops very easily, produces the potential safety hazard. The processing equipment used by the process is a cold header which is generally specially used for processing fastening accessories such as bolts, nuts, rivets and the like, but no cold header is used for processing the linear bearing field so far.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a processing technology of a flange integrated linear bearing.
The invention adopts the technical scheme for solving the technical problems that: the processing technology of the flange integrated linear bearing comprises the following steps:
(1) pretreatment: spheroidizing annealing is carried out on the high-quality metal disc wire rod, the hardness is controlled to be 75-80HRB, so that the high-quality metal disc wire rod is completely suitable for cold heading forming, the problem that the hardness of the metal disc wire rod is higher than that of a male connector in cold heading forming is solved, and the service life of a cold heading die is prolonged; then drawing, phosphorizing and saponifying;
(2) cutting: cutting high-quality metal disc round wire rods into small sections of stock columns by adopting a multi-station cold header, and ensuring the smoothness of cuts;
(3) upsetting a flange: upsetting the material column into a flange by adopting a multi-station cold header;
(4) extruding: performing rough, positive and negative combined extrusion by using a multi-station cold header, and leaving about 1-3mm of the bottom of the flange surface without extrusion;
(5) punching: removing waste with the bottom of about 1-3mm by adopting a multi-station cold header;
(6) machining: and quenching and polishing the integrated linear bearing outer sleeve.
For further explanation, the specific operation steps of the phosphorization and saponification treatment in the step (1) are as follows:
1.1, manually preprocessing a workpiece, preparing corresponding chemical raw materials according to the requirement of a production instruction and the quantity of products, and avoiding no waste of the chemical raw materials;
1.2, degreasing, wherein the product surface has greasy dirt and needs to be sufficiently degreased in a degreasing tank;
1.3, water washing, wherein the first water washing prevents residual dirt in the oil removing groove from entering the next procedure;
1.4, pickling for rust removal, stirring acid liquor by using a product for a short time, and preventing excessive corrosion while fully pickling;
1.5, washing with water and then washing with high pressure, wherein the second washing with water needs to be put into flowing clear water and is fully washed with a high-pressure water gun, so that acid liquor is prevented from entering the next process;
1.6, phosphating, namely putting a product into prepared phosphating solution, shaking up, down, left and right at regular time in the phosphating process to enable the product to react uniformly, adding clear water or the phosphating solution at different time intervals, keeping the total concentration, the free acidity and the acid ratio of the phosphating solution, and obtaining a phosphate protective film with a medium corrosion prevention effect through chemical reaction;
1.7, water washing, wherein the third water washing prevents residual phosphating solution on the surface of the product from entering the next working procedure;
1.8, saponifying, namely putting the product into a saponification tank, shaking up, down, left and right at regular time during the saponification so as to enable the product to react uniformly, and improving the lubricating effect during drawing;
1.9 drying, washing with hot water, drying and packaging.
Further, the upsetting flange in the step (3) comprises a rough upsetting flange and a fine upsetting flange, the rough upsetting flange roughly upset the tail of the bearing through a cold header to form a flange face, and the fine upsetting flange enlarges the diameter of the flange face and shortens the length through secondary cold upsetting.
Further explaining, the extrusion in the step (4) comprises coarse extrusion and fine extrusion, wherein the coarse extrusion is performed through forward and reverse composite extrusion of a multi-station cold header to extrude a hole in the inner side of the cylinder, a bottom with the thickness of 1-3mm is reserved at the bottom of the flange surface and the hole is not extruded through the hole, and the fine extrusion is performed through extruding 4-6 slide ways which are uniformly distributed through the multi-station cold header on the inner side of the extruded cylinder.
Further, the machining in the step (6) comprises quenching and polishing, wherein the outer circle, the end face, the inner hole and the inner cutting groove of the inner hole and the outer circle of the linear bearing are machined before the quenching, the flange mounting hole is drilled, reamed and countersunk after the turning, and the inner circle and the outer circle of the clamping flange are polished after the quenching.
Further, the die cavities of different stations in the five-die five-punching cold header can be replaced according to different models, including manufacturing square flanges, circular flanges or elliptical flanges and the like, and the positions of the flanges can be correspondingly adjusted in the middle or at the bottom of the small-end shaft.
The invention has the beneficial effects that: the invention uses cold heading machine equipment and five-die five-punch multi-station stamping plastic deformation molding to stamp the cut high-quality metal to reduce the diameter and increase the diameter according to the length of the die cavity, reduces a large amount of waste materials by pure lathe processing at the present stage, is more environment-friendly, the multi-station cold header has large batch, high efficiency and low cost, is suitable for large-scale processing, and can shape the diameter and the length of the flange surface through rough heading and fine heading, meanwhile, the metal strength of the flange surface is enhanced, the stability of the flange and the cylindrical shaft is higher by cold heading processing, the flange surface is not easy to fall off, the metal strength of the cylindrical shaft wall is enhanced by rough extrusion and fine extrusion pore-forming, finally, corresponding turning is carried out according to the required precision of the integrated linear bearing, the cold header can be changed to form an integrated linear bearing with different models such as a square flange, a circular flange, an oval flange or a flange surface in the middle.
Drawings
FIG. 1 is a front exploded view of an integral linear bearing of the present invention;
FIG. 2 is an exploded rear view of the integrated linear bearing of the present invention;
FIG. 3 is a schematic front view of an integrated linear bearing with a flange in the middle;
FIG. 4 is a schematic reverse side view of the one-piece linear bearing with the flange in place;
FIG. 5 is a front assembly view of the integrated linear bearing of the present invention;
fig. 6 is a back assembly view of the integrated linear bearing of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
with reference to the accompanying drawings: the processing technology of the flange integrated linear bearing in the embodiment comprises the following steps:
(1) pretreatment: spheroidizing annealing is carried out on the high-quality metal disc wire rod, the hardness is controlled to be 75-80HRB, so that the high-quality metal disc wire rod is completely suitable for cold heading forming, the problem that the hardness of the metal disc wire rod is higher than that of a male connector in cold heading forming is solved, and the service life of a cold heading die is prolonged; then drawing, phosphorizing and saponifying;
(2) cutting: cutting high-quality metal disc round wire rods into small sections of stock columns by adopting a multi-station cold header, and ensuring the smoothness of cuts;
(3) upsetting a flange: upsetting the material column into a flange by adopting a multi-station cold header;
(4) extruding: performing rough, positive and negative combined extrusion by using a multi-station cold header, and leaving about 2mm of bottom of the flange surface without extrusion;
(5) punching: removing waste with the bottom of about 2mm by adopting a multi-station cold header;
(6) machining: and quenching and polishing the integrated linear bearing outer sleeve.
The phosphating and saponification treatment in the step (1) comprises the following specific operation steps: 1. manually preprocessing a workpiece; 2. degreasing; 3. washing with water; 4. acid pickling for rust removal; 5. washing and then rinsing; 6. phosphorization; 7. and then washing and drying.
And (4) upsetting the flange in the step (3), wherein the upsetting flange comprises a rough upsetting flange and a fine upsetting flange, the rough upsetting flange roughly upsetting the tail part of the bearing through a cold header to form a flange surface preliminarily, and the fine upsetting flange enlarges the diameter of the flange surface and shortens the length through secondary cold upsetting.
Step (4) extrusion, it includes thick extrusion and smart extrusion, thick extrusion is in the inboard extrusion hole of cylinder and leaves 2mm end at flange face bottom and do not extrude the expert through the positive and negative compound extrusion of multistation cold heading machine, the smart extrusion is in the inboard slide of extruding five evenly distributed of the cylinder extrusion through the multistation cold heading machine in the hole of having crowded.
And (6) machining, including quenching and polishing, wherein the outer circle, the end face, the inner hole and the inner cutting groove of the inner hole and the outer circle of the linear bearing are machined before quenching, the flange mounting hole is drilled, expanded and countersunk after machining, and the inner circle and the outer circle of the clamping flange are polished after quenching.
While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.
Claims (4)
1. A machining process of a flange integrated linear bearing comprises the following steps:
(1) pretreatment: spheroidizing annealing is carried out on the high-quality metal disc wire rod, the hardness is controlled to be 75-80HRB, so that the high-quality metal disc wire rod is completely suitable for cold heading forming, the problem that the metal disc wire rod is difficult to cold heading forming due to high hardness is solved, and the service life of a cold heading die is prolonged; then drawing, phosphorizing and saponifying;
(2) cutting: cutting high-quality metal disc round wire rods into small sections of stock columns by adopting a multi-station cold header, and ensuring the smoothness of cuts;
(3) upsetting a flange: upsetting the material column into a flange by adopting a multi-station cold header;
(4) extruding: performing rough, positive and negative combined extrusion by using a multi-station cold header, and leaving about 1-3mm of the bottom of the flange surface without extrusion;
(5) punching: removing waste with the bottom of about 1-3mm by adopting a multi-station cold header;
(6) machining: quenching and polishing the integrated linear shaft sleeve;
and (4) upsetting the flange in the step (3), wherein the upsetting flange comprises a rough upsetting flange and a fine upsetting flange, the rough upsetting flange roughly upsetting the tail of the bearing through a cold header to form a flange surface preliminarily, and the fine upsetting flange enlarges the diameter of the flange surface and shortens the length through secondary cold upsetting.
2. The machining process of the flange integrated linear bearing according to claim 1, wherein the machining process comprises the following steps: the phosphating and saponification treatment in the step (1) comprises the following specific operation steps:
1.1, manually preprocessing a workpiece, preparing corresponding chemical raw materials according to the requirement of a production instruction and the quantity of products, and avoiding no waste of the chemical raw materials;
1.2, degreasing, wherein the product surface has greasy dirt and needs to be sufficiently degreased in a degreasing tank;
1.3, water washing, wherein the first water washing prevents residual dirt in the oil removing groove from entering the next procedure;
1.4, pickling for rust removal, stirring acid liquor by using a product for a short time, and preventing excessive corrosion while fully pickling;
1.5, washing with water and then washing with high pressure, wherein the second washing with water needs to be put into flowing clear water and is fully washed with a high-pressure water gun, so that acid liquor is prevented from entering the next process;
1.6, phosphating, namely putting a product into prepared phosphating solution, shaking up, down, left and right at regular time in the phosphating process to enable the product to react uniformly, adding clear water or the phosphating solution at different time intervals, keeping the total concentration, the free acidity and the acid ratio of the phosphating solution, and obtaining a phosphate protective film with a medium corrosion prevention effect through chemical reaction;
1.7, water washing, wherein the third water washing prevents residual phosphating solution on the surface of the product from entering the next working procedure;
1.8, saponifying, namely putting the product into a saponification tank, shaking up, down, left and right at regular time during the saponification so as to enable the product to react uniformly, and improving the lubricating effect during drawing;
1.9 drying, washing with hot water, drying and packaging.
3. The machining process of the flange integrated linear bearing according to claim 1, wherein the machining process comprises the following steps: and (4) extruding, wherein the extruding comprises rough extruding and fine extruding, the rough extruding is subjected to positive and negative composite extrusion of a multi-station cold header to extrude a hole in the inner side of the cylinder and leave 1-3mm bottom at the bottom of the flange surface without extruding, and the fine extruding is subjected to extrusion of 4-6 evenly distributed slideways in the inner side of the extruded cylinder through the multi-station cold header.
4. The machining process of the flange integrated linear bearing according to claim 1, wherein the machining process comprises the following steps: step (6) machining, it is including quenching and the processing of polishing, the car processing is carried out to excircle, terminal surface, hole and the interior grooving of alignment bearing hole and excircle before the quenching processing, and the back is lathed and is carried out drilling, reaming and counter bore to the flange mounting hole, the back centre gripping flange of quenching processing carries out grinding process to interior excircle, terminal surface to and the super finish grinding processing is carried out to the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010663298.XA CN111822955B (en) | 2020-07-10 | 2020-07-10 | Machining process of flange integrated linear bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010663298.XA CN111822955B (en) | 2020-07-10 | 2020-07-10 | Machining process of flange integrated linear bearing |
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| Publication Number | Publication Date |
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| CN111822955A CN111822955A (en) | 2020-10-27 |
| CN111822955B true CN111822955B (en) | 2021-11-23 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102019542A (en) * | 2010-11-08 | 2011-04-20 | 大丰市中德精锻件有限公司 | Processing process of profiled blind hole flange type inner ball cage fine forging piece |
| CN102284663A (en) * | 2011-06-09 | 2011-12-21 | 无锡东海锻造有限公司 | Precision forging process and die for flange |
| CN104525809A (en) * | 2014-12-01 | 2015-04-22 | 宁波安拓实业有限公司 | Manufacturing method for coal cutting pick workblanks |
| CN104589002A (en) * | 2014-11-20 | 2015-05-06 | 江苏威鹰机械有限公司 | Manufacturing technology of hollow outer gear of electric forklift driving flange |
| CN105603415A (en) * | 2014-11-19 | 2016-05-25 | 重庆江东摩托车配件有限公司 | Saponification process |
| CN106736323A (en) * | 2017-01-23 | 2017-05-31 | 江苏创汽车零部件有限公司 | A kind of warm forging forming technology of output flange axle |
| CN107297597A (en) * | 2016-04-16 | 2017-10-27 | 东莞市华钢金属材料有限公司 | A kind of production method of automobile trunk elevating lever |
-
2020
- 2020-07-10 CN CN202010663298.XA patent/CN111822955B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019542A (en) * | 2010-11-08 | 2011-04-20 | 大丰市中德精锻件有限公司 | Processing process of profiled blind hole flange type inner ball cage fine forging piece |
| CN102284663A (en) * | 2011-06-09 | 2011-12-21 | 无锡东海锻造有限公司 | Precision forging process and die for flange |
| CN105603415A (en) * | 2014-11-19 | 2016-05-25 | 重庆江东摩托车配件有限公司 | Saponification process |
| CN104589002A (en) * | 2014-11-20 | 2015-05-06 | 江苏威鹰机械有限公司 | Manufacturing technology of hollow outer gear of electric forklift driving flange |
| CN104525809A (en) * | 2014-12-01 | 2015-04-22 | 宁波安拓实业有限公司 | Manufacturing method for coal cutting pick workblanks |
| CN107297597A (en) * | 2016-04-16 | 2017-10-27 | 东莞市华钢金属材料有限公司 | A kind of production method of automobile trunk elevating lever |
| CN106736323A (en) * | 2017-01-23 | 2017-05-31 | 江苏创汽车零部件有限公司 | A kind of warm forging forming technology of output flange axle |
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| CN111822955A (en) | 2020-10-27 |
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