CN112222261A - Machining method for joint bearing notch - Google Patents
Machining method for joint bearing notch Download PDFInfo
- Publication number
- CN112222261A CN112222261A CN202011024941.0A CN202011024941A CN112222261A CN 112222261 A CN112222261 A CN 112222261A CN 202011024941 A CN202011024941 A CN 202011024941A CN 112222261 A CN112222261 A CN 112222261A
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- China
- Prior art keywords
- punch
- bearing
- knuckle bearing
- knuckle
- machining method
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
-
- 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
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention belongs to the field of machining, and relates to a method for machining a gap of a joint bearing, which aims to solve the problems that the joint bearing has the production characteristics of large batch and more batches, and if a proper machining mode cannot be adopted, the production efficiency and the delivery progress are greatly influenced while a lower economic benefit is generated; the knuckle bearing is processed in a stamping mode, and the knuckle bearing is processed according to the process route of feeding forming → notch punching → deburring → heat treatment, so that the requirements can be met, the requirements on the size and the geometric accuracy of the notch are met, the production efficiency is improved, and the manufacturing cost can be reduced. The machining mode is widely used in our company, extends to the machining of assembling notches of knuckle bearings of other models, and has certain popularization value.
Description
Technical Field
The invention belongs to the field of machining, and relates to a method for machining a joint bearing notch.
Background
Joint bearing has big oscillating angle and aligning performance, can realize rotatory swing and aligning, have in the aerospace field and important effect, and the assembly breach has very big effect when joint bearing assembles, owing to there is the breach, can make the assembly convenient and fast more, greatly improve the efficiency of assembly, and joint bearing has big in batches, many production characteristics in batches, if can not adopt suitable processing mode, when producing lower economic benefits, also can produce production efficiency and produce great influence to the delivery progress.
Disclosure of Invention
The invention aims to solve the problems that the knuckle bearing has the characteristics of large batch and multiple batches of production, and if a proper machining mode cannot be adopted, the lower economic benefit is generated, and meanwhile, the production efficiency and the delivery progress are greatly influenced.
In order to achieve the purpose, the joint bearing notch machining method comprises the following steps:
the method comprises the following steps: processing a punch and a die holder according to the size of the joint bearing to be processed and the interface installation size of the punch;
step two: adopting a numerical control machine tool with a bar stock machine to carry out forming processing on the knuckle bearing;
step three: installing a punch and a die holder on a press; debugging is carried out;
step four: putting the knuckle bearing processed by the numerical control machine tool on a debugged press machine for stamping;
step five: taking out the joint bearing processed by the press;
step six: polishing the knuckle bearing processed by the press machine to remove burrs;
step seven: and carrying out heat treatment on the joint bearing after the burrs are removed.
Furthermore, the material of the joint bearing in the first step is bearing steel.
Still further, the punch in the first step is a bevel-edge punch.
Further, the punch size in the first step has the following relationship:
dpunch head＝D′+δ；
In the formula: d' is the diameter of the notch; b' is the width of the notch; delta is a tolerance, dPunch headIs the maximum distance between two circular arc surfaces of the punch, bPunch headThe maximum distance between the two planes of the punch.
Still further, the angle of the inclined edge of the punch in the first step is 60 °; the width of the cutting edge is 0.4 mm.
Furthermore, the roughness of the cylindrical surface of the punch in the first step is controlled within Ra0.4, and the roughness of the planes on two sides of the punch is controlled within Ra0.8.
Still further, the dimensions of the die holder in the first step have the following relationship:
Dpunching die＝D+(0.05～0.1)；
HPunching die＝22mm；
In the formula: d is the outer diameter of the joint bearing; h is the width of the spherical plain bearingPunching dieThe height of the matched part of the die holder and the joint bearing DPunching dieThe diameter of the matched part of the die holder and the joint bearing is the size.
And step two, a numerical control machine tool with a bar stock machine is adopted to carry out forming processing on the knuckle bearing, so that the ovality of the outer diameter of the processed knuckle bearing is 0.03mm, and the parallelism difference of the end surfaces is 0.04 mm.
Furthermore, when debugging is carried out in the third step; the coaxiality of the center of the working cylindrical surface of the punch and the interface of the press is less than or equal to 0.03 mm.
And furthermore, when the knuckle bearing processed by the numerical control machine tool is placed on a debugged press machine for stamping in the fourth step, the knuckle bearing is in clearance fit with the die holder.
Has the advantages that:
the qualification rate is over 99 percent after the verification of processing tests. The machining mode is feasible, and improves the production efficiency and reduces the manufacturing cost while ensuring that the size and the geometric accuracy of the notch meet the requirements. The machining mode is widely used in our company, extends to the machining of assembling notches of knuckle bearings of other models, and has certain popularization value.
Drawings
FIG. 1 is a front cross-sectional view of a spherical plain bearing of the present invention;
FIG. 2 is a left side view of the spherical plain bearing of the present invention;
FIG. 3 is a front cross-sectional view of a punch of the present invention (d in the figure)Punch headThe maximum distance between two arc surfaces of the inclined edge of the punch is beta, the angle of the inclined edge of the punch is beta, and D is the installation size of a connector of the press machine);
FIG. 4 is a left side view of the punch of the present invention (B)Punch headThe distance of the two planes being the beveled edge of the punch);
FIG. 5 is a cross-sectional view of the die holder of the present invention (H)Die holderIs the height of the die holder, DDie holderIs the outer diameter of the die holder, DPunching dieIs the inner diameter H of the upper end gap of the die holderDie holderThe height of the upper end gap of the die holder, and d is the inner diameter of the lower end gap of the die holder).
Detailed Description
The first embodiment is as follows: the joint bearing notch machining method is characterized by comprising the following steps: it comprises the following steps:
the method comprises the following steps: processing a punch and a die holder according to the size of the joint bearing to be processed and the interface installation size of the punch;
step two: adopting a numerical control machine tool with a bar stock machine to carry out forming processing on the knuckle bearing;
step three: installing a punch and a die holder on a press; debugging is carried out;
step four: putting the knuckle bearing processed by the numerical control machine tool on a debugged press machine for stamping;
step five: taking out the joint bearing processed by the press;
step six: polishing the knuckle bearing processed by the press machine to remove burrs;
step seven: and carrying out heat treatment on the joint bearing after the burrs are removed.
The second embodiment is as follows: and the material of the joint bearing in the first step is bearing steel.
Other embodiments are the same as the first embodiment.
The third concrete implementation mode: the punch in the first step is a bevel edge punch.
Other embodiments are the same as the second embodiment.
The fourth concrete implementation mode: the punch size in the first step has the following relationship:
dpunch head＝D′+δ；
In the formula: d' is the diameter of the notch; b' is the width of the notch; delta is a tolerance, dPunch headIs the maximum distance between two circular arc surfaces of the punch, bPunch headIs the maximum distance of the two planes of the two punches.
Other embodiments are the same as the first embodiment.
The fifth concrete implementation mode: the angle of the inclined edge of the punch in the first step is beta-60 degrees; the width of the cutting edge is 0.4 mm.
Other embodiments are the same as the first embodiment.
The sixth specific implementation mode: the roughness of the cylindrical surface of the punch in the first step is controlled within Ra0.4, and the roughness of the planes on two sides of the punch is controlled within Ra0.8.
Other embodiments are the same as the first embodiment.
The seventh embodiment: the dimensions of the die holder in the first step have the following relations:
Dpunching die＝D+(0.05～0.1)；
HPunching die＝22mm；
In the formula: d is the outer diameter of the finished product after turning; h is the width of the finished product of the lathe, HPunching dieThe height of the matched part of the die holder and the joint bearing DPunching dieThe diameter of the matched part of the die holder and the joint bearing is the size.
Other embodiments are the same as the first embodiment.
The specific implementation mode is eight: and step two, the numerical control machine tool with the bar stock machine is adopted to carry out forming processing on the knuckle bearing, so that the ovality of the outer diameter of the processed knuckle bearing is 0.03mm, and the parallelism difference of the end surfaces is 0.04 mm.
Other embodiments are the same as the first embodiment.
The specific implementation method nine: when debugging is carried out in the third step; the coaxiality of the center of the working cylindrical surface of the punch and the interface of the press is less than or equal to 0.03 mm.
Other embodiments are the same as the first embodiment.
The detailed implementation mode is ten: and in the fourth step, when the knuckle bearing processed by the numerical control machine tool is placed on a debugged press machine for stamping, the knuckle bearing is in clearance fit with the die holder.
Other embodiments are the same as the first embodiment.
TABLE 1 first lot Process spot check data
TABLE 2 second batch Process sampling data
Claims (10)
1. The joint bearing notch machining method is characterized by comprising the following steps: it comprises the following steps:
the method comprises the following steps: processing a punch and a die holder according to the size of the joint bearing to be processed and the interface installation size of the punch;
step two: adopting a numerical control machine tool with a bar stock machine to carry out forming processing on the knuckle bearing;
step three: installing a punch and a die holder on a press; debugging is carried out;
step four: putting the knuckle bearing processed by the numerical control machine tool on a debugged press machine for stamping;
step five: taking out the joint bearing processed by the press;
step six: polishing the knuckle bearing processed by the press machine to remove burrs;
step seven: and carrying out heat treatment on the joint bearing after the burrs are removed.
2. The knuckle bearing gap machining method according to claim 1, wherein: and the material of the joint bearing in the first step is bearing steel.
3. The knuckle bearing gap machining method according to claim 1, wherein: the punch in the first step is a bevel edge punch.
4. The knuckle bearing gap machining method according to claim 1, wherein: the punch size in the first step has the following relationship:
dpunch head＝D′+δ；
In the formula: d' is the diameter of the gap of the joint bearing; b' is the width of the notch; delta is a tolerance, dPunch headThe maximum distance between two arc surfaces of the oblique edge of the punch, bPunch headThe distance between the two planes of the beveled edge of the punch.
5. The knuckle bearing gap machining method according to claim 1, wherein: the angle of the inclined edge of the punch in the first step is beta-60 degrees; the width of the cutting edge is 0.4 mm.
6. The knuckle bearing gap machining method according to claim 1, wherein: the roughness of the cylindrical surface of the punch in the first step is controlled within Ra0.4, and the roughness of the planes on two sides of the punch is controlled within Ra0.8.
7. The knuckle bearing gap machining method according to claim 1, wherein: the dimensions of the die holder in the first step have the following relations:
Dpunching die＝D+(0.05～0.1)；
HPunching die＝22mm；
In the formula: dPunching dieThe inner diameter of a notch at the upper end of the die holder is D, and the outer diameter of the knuckle bearing is D; hPunching dieThe height of the matched part of the die holder and the joint bearing DPunching dieThe diameter of the matched part of the die holder and the joint bearing is the size.
8. The knuckle bearing gap machining method according to claim 1, wherein: and step two, the numerical control machine tool with the bar stock machine is adopted to carry out forming processing on the knuckle bearing, so that the ovality of the outer diameter of the processed knuckle bearing is 0.03mm, and the parallelism difference of the end surfaces is 0.04 mm.
9. The knuckle bearing gap machining method according to claim 1, wherein: when debugging is carried out in the third step; the coaxiality of the center of the working cylindrical surface of the punch and the interface of the press is less than or equal to 0.03 mm.
10. The knuckle bearing gap machining method according to claim 1, wherein: and in the fourth step, when the knuckle bearing processed by the numerical control machine tool is placed on a debugged press machine for stamping, the knuckle bearing is in clearance fit with the die holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011024941.0A CN112222261A (en) | 2020-09-25 | 2020-09-25 | Machining method for joint bearing notch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011024941.0A CN112222261A (en) | 2020-09-25 | 2020-09-25 | Machining method for joint bearing notch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112222261A true CN112222261A (en) | 2021-01-15 |
Family
ID=74108651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011024941.0A Withdrawn CN112222261A (en) | 2020-09-25 | 2020-09-25 | Machining method for joint bearing notch |
Country Status (1)
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| CN (1) | CN112222261A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07276147A (en) * | 1994-04-08 | 1995-10-24 | Yasuo Furusawa | Manufacture of u-bolt having seat plate |
| CN2230635Y (en) * | 1995-09-01 | 1996-07-10 | 崔占通 | Automatic feeding unit of punch press for continuously punching |
| JPH11333530A (en) * | 1998-05-22 | 1999-12-07 | Nkk Corp | Method for punching metal plate and punching tool |
| CN2546681Y (en) * | 2002-03-20 | 2003-04-23 | 福建龙溪轴承股份有限公司 | Split housing washer radial spherical plain bearing |
| CN101368594A (en) * | 2008-09-24 | 2009-02-18 | 宁波恒力汽配轴承有限公司 | Miniature linear bearing and manufacturing method thereof |
| CN102501023A (en) * | 2011-11-15 | 2012-06-20 | 燕山大学 | Compression molding method without action of inner rings for integral self-lubricating joint bearings |
| JP2012170969A (en) * | 2011-02-18 | 2012-09-10 | Iwasaki:Kk | Punching device |
| CN202560845U (en) * | 2012-04-12 | 2012-11-28 | 奥新（厦门）轴承有限公司 | Controlled closure efficient assembly mold for knuckle bearings |
| JP2013027898A (en) * | 2011-07-28 | 2013-02-07 | Nsk Ltd | Method for manufacturing member made of metal with outward flange part |
| CN102921801A (en) * | 2012-11-06 | 2013-02-13 | 柳州市昌河模具厂 | Molding method for trailing arm beam of rear axle bracket assembly of automobile |
| CN109262212A (en) * | 2018-12-06 | 2019-01-25 | 中国航发哈尔滨轴承有限公司 | A kind of aircraft drag umbrella spherical plain bearing rod end processing method |
| DE102017213059A1 (en) * | 2017-07-28 | 2019-01-31 | Aktiebolaget Skf | Manufacturing method of a bearing cage and bearing arrangement with such a cage, in particular for a balance shaft, a crankshaft or a camshaft |
| CN110682252A (en) * | 2019-10-16 | 2020-01-14 | 陕西益杰机电科技有限公司 | Parabolic oscillating bearing rolling pack assembling equipment |
| CN111001991A (en) * | 2019-12-25 | 2020-04-14 | 中国航发哈尔滨轴承有限公司 | Processing method and processing tool for pocket locking claw of cylindrical roller bearing retainer |
-
2020
- 2020-09-25 CN CN202011024941.0A patent/CN112222261A/en not_active Withdrawn
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07276147A (en) * | 1994-04-08 | 1995-10-24 | Yasuo Furusawa | Manufacture of u-bolt having seat plate |
| CN2230635Y (en) * | 1995-09-01 | 1996-07-10 | 崔占通 | Automatic feeding unit of punch press for continuously punching |
| JPH11333530A (en) * | 1998-05-22 | 1999-12-07 | Nkk Corp | Method for punching metal plate and punching tool |
| CN2546681Y (en) * | 2002-03-20 | 2003-04-23 | 福建龙溪轴承股份有限公司 | Split housing washer radial spherical plain bearing |
| CN101368594A (en) * | 2008-09-24 | 2009-02-18 | 宁波恒力汽配轴承有限公司 | Miniature linear bearing and manufacturing method thereof |
| JP2012170969A (en) * | 2011-02-18 | 2012-09-10 | Iwasaki:Kk | Punching device |
| JP2013027898A (en) * | 2011-07-28 | 2013-02-07 | Nsk Ltd | Method for manufacturing member made of metal with outward flange part |
| CN102501023A (en) * | 2011-11-15 | 2012-06-20 | 燕山大学 | Compression molding method without action of inner rings for integral self-lubricating joint bearings |
| CN202560845U (en) * | 2012-04-12 | 2012-11-28 | 奥新（厦门）轴承有限公司 | Controlled closure efficient assembly mold for knuckle bearings |
| CN102921801A (en) * | 2012-11-06 | 2013-02-13 | 柳州市昌河模具厂 | Molding method for trailing arm beam of rear axle bracket assembly of automobile |
| DE102017213059A1 (en) * | 2017-07-28 | 2019-01-31 | Aktiebolaget Skf | Manufacturing method of a bearing cage and bearing arrangement with such a cage, in particular for a balance shaft, a crankshaft or a camshaft |
| CN109262212A (en) * | 2018-12-06 | 2019-01-25 | 中国航发哈尔滨轴承有限公司 | A kind of aircraft drag umbrella spherical plain bearing rod end processing method |
| CN110682252A (en) * | 2019-10-16 | 2020-01-14 | 陕西益杰机电科技有限公司 | Parabolic oscillating bearing rolling pack assembling equipment |
| CN111001991A (en) * | 2019-12-25 | 2020-04-14 | 中国航发哈尔滨轴承有限公司 | Processing method and processing tool for pocket locking claw of cylindrical roller bearing retainer |
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Application publication date: 20210115 |