GB1560611A - Bearing measurement - Google Patents
Bearing measurement Download PDFInfo
- Publication number
- GB1560611A GB1560611A GB347078A GB347078A GB1560611A GB 1560611 A GB1560611 A GB 1560611A GB 347078 A GB347078 A GB 347078A GB 347078 A GB347078 A GB 347078A GB 1560611 A GB1560611 A GB 1560611A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shell
- distance
- parting line
- line height
- machined
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/003—Measuring of motor parts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Earth Drilling (AREA)
Description
(54) BEARING MEASUREMENT
(71) We, GKN GROUP SERVICES
LIMITED, a British Company of Group
Head Office, Smethwick. Warley, West
Midlands, do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:
This invention relates to the manufacture of flexible bearing shells and in particular to a method of testing such shells for size whereby undersize and oversize bearing shells can be rejected in the course of manufacture.
In the complete specification of our Patent No. 1.463,092 we have described and claimed a method of testing the size of a flexible bearing shell by measuring a distance having a known relation to the parting line height of the shell, characterised in that the said measurement is effected while the shell is clamped in a support in a machine tool aranged to machine the inner cylindrical surface of the shell while clamped in said support and before said inner surface is machined.
It was considered at the time that the application for Patent No. 1,463,092 was filed that the distance related to the parting line height should be measured before the inner cylindrical surface was machined.
While this method does give satisfactory results we have found that better reproducibility of the results is obtained if the distance relating to the parting line height is measured after the inner surface has been machined.
While we now prefer to measure such distance after machining. we have also discovered that the distance can be measured during machining.
The dimensions of the shell vary due.
inter alia, to thermal effects while in the machine and we have found that by measuring the distance related to parting line height shortly after machining very good results can be obtained as far as reproducibility is concerned.
Thus one can monitor the dimensions of the shell during and after machining of the surface and one selects for the time of measurement a period when the dimension is substantially stable.
WHAT WE CLAIM IS:
1. A method of testing the size of a flexible bearing shell by measuring a distance having a known relation to the parting line height of the shell, characterised in that the said measurement is effected while the shell is clamped in a support in a machine tool arranged to machine the inner cylindrical surface of the shell while clamped in said support and during or after said inner surface is machined.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (1)
- **WARNING** start of CLMS field may overlap end of DESC **.(54) BEARING MEASUREMENT (71) We, GKN GROUP SERVICES LIMITED, a British Company of Group Head Office, Smethwick. Warley, West Midlands, do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to the manufacture of flexible bearing shells and in particular to a method of testing such shells for size whereby undersize and oversize bearing shells can be rejected in the course of manufacture.In the complete specification of our Patent No. 1.463,092 we have described and claimed a method of testing the size of a flexible bearing shell by measuring a distance having a known relation to the parting line height of the shell, characterised in that the said measurement is effected while the shell is clamped in a support in a machine tool aranged to machine the inner cylindrical surface of the shell while clamped in said support and before said inner surface is machined.It was considered at the time that the application for Patent No. 1,463,092 was filed that the distance related to the parting line height should be measured before the inner cylindrical surface was machined.While this method does give satisfactory results we have found that better reproducibility of the results is obtained if the distance relating to the parting line height is measured after the inner surface has been machined.While we now prefer to measure such distance after machining. we have also discovered that the distance can be measured during machining.The dimensions of the shell vary due.inter alia, to thermal effects while in the machine and we have found that by measuring the distance related to parting line height shortly after machining very good results can be obtained as far as reproducibility is concerned.Thus one can monitor the dimensions of the shell during and after machining of the surface and one selects for the time of measurement a period when the dimension is substantially stable.WHAT WE CLAIM IS:1. A method of testing the size of a flexible bearing shell by measuring a distance having a known relation to the parting line height of the shell, characterised in that the said measurement is effected while the shell is clamped in a support in a machine tool arranged to machine the inner cylindrical surface of the shell while clamped in said support and during or after said inner surface is machined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB347078A GB1560611A (en) | 1974-07-27 | 1978-01-27 | Bearing measurement |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3329474A GB1463092A (en) | 1974-07-27 | 1974-07-27 | Bearing measurement |
| GB347078A GB1560611A (en) | 1974-07-27 | 1978-01-27 | Bearing measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1560611A true GB1560611A (en) | 1980-02-06 |
Family
ID=26238330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB347078A Expired GB1560611A (en) | 1974-07-27 | 1978-01-27 | Bearing measurement |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1560611A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101520299B (en) * | 2009-03-31 | 2010-11-03 | 上海摩士精密轴承制造有限公司 | Height testing instrument for miniature bearing |
| CN104019781A (en) * | 2014-06-17 | 2014-09-03 | 中国计量学院 | Measuring head capable of measuring radius height and contraaperture parallelism of bearing bush at the same time |
-
1978
- 1978-01-27 GB GB347078A patent/GB1560611A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101520299B (en) * | 2009-03-31 | 2010-11-03 | 上海摩士精密轴承制造有限公司 | Height testing instrument for miniature bearing |
| CN104019781A (en) * | 2014-06-17 | 2014-09-03 | 中国计量学院 | Measuring head capable of measuring radius height and contraaperture parallelism of bearing bush at the same time |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |