CN202757604U - Ball bearing contact angle measuring apparatus - Google Patents
Ball bearing contact angle measuring apparatus Download PDFInfo
- Publication number
- CN202757604U CN202757604U CN 201220374739 CN201220374739U CN202757604U CN 202757604 U CN202757604 U CN 202757604U CN 201220374739 CN201220374739 CN 201220374739 CN 201220374739 U CN201220374739 U CN 201220374739U CN 202757604 U CN202757604 U CN 202757604U
- Authority
- CN
- China
- Prior art keywords
- bearing
- contact angle
- measurement device
- load piece
- velocity measurement
- 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.)
- Withdrawn - After Issue
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- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to a ball bearing contact angle measuring apparatus, comprising a work bench provided with a speed regulation motor with a vertical upward output shaft. The output shaft is provided with a mandrel for fixing a bearing; a load block for compacting an outer ring of the bearing is arranged above the bearing; a load block driving device for driving the load block to rotate is arranged above the load block; the work bench is provided with a speed measuring device for measuring rotation speeds of the load block and the mandrel. The ball bearing contact angle measuring apparatus utilizes a rotation speed when a bearing inner and outer ring sleeve differential speed is zero to calculate a contact angle; the operation is convenient and measuring results are accurate and reliable.
Description
Technical field
The utility model relates to a kind of bearing test equipment, specifically a kind of testing apparatus for measured angular contact bearing the actual contact angle.
Background technology
Contact Angle of Ball Bearings has shown the direction of transfer of power between the inner steel ball of bearing and the lasso, has reflected that bearing bears the ability of axial load and radial load, and it is rigidity that contact angle affects bearing load carrying capacity, bearing rigidity and axle.The contact angle of test bearing can be understood the actual contact angle of bearing, and is very important to production and the use of pairing bearing.The pairing bearing requires the identical bearing of the actual contact angle to match mutually, can improve better the serviceable life of bearing.
The contact angle of bearing mainly is the contact angle that comes calculation bearing by calculating play at present.At the actual play of actual production process centre bearer, the ditch radius-of-curvature of bearing ring has certain margin tolerance and measuring error, and is larger by the general error of contact angle of calculating.
Summary of the invention
The utility model provides a kind of Contact Angle of Ball Bearings measurement mechanism for the problems referred to above, and this device can be measured the contact angle of bearing reality easily and accurately.
According to the technical solution of the utility model: a kind of Contact Angle of Ball Bearings measurement mechanism, comprise worktable, output shaft buncher vertically upward is installed on the described worktable, the axle that is used for fixing bearing is installed on the output shaft of described buncher, the top of described bearing is provided with the load piece of the bearing outer ring that compresses described bearing, the top of described load piece is provided with the load piece drive unit that drives its rotation, and the speed measuring device of measuring described load piece and described axle rotating speed is installed on the described worktable.
Described load piece drive unit comprises draft tube, rami tracheales bracer, trachea bracket, throttling valve and high pressure valve, one end of described draft tube links to each other with source of the gas, its other end links to each other with described rami tracheales bracer, described rami tracheales bracer links to each other with trachea bracket by tracheae, be furnished with two high pressure valves on the described trachea bracket, every described high pressure valve links to each other by the tracheae of throttling valve with described rami tracheales bracer.
Described speed measuring device comprises the first photoelectric velocity measurement device and the second photoelectric velocity measurement device, described the first photoelectric velocity measurement device and described the second photoelectric velocity measurement device are installed on the velometer fixed support, the position of described the first photoelectric velocity measurement device is corresponding with described load piece, and described the second photoelectric velocity measurement device is corresponding with described axle.
Technique effect of the present utility model is: the utility model equals 0 o'clock rotating speed by bearing internal external snare differential velocity and recently calculates contact angle, easy to operate, the measurement result data are accurately reliable, for Production of bearing merchant and bearing use the merchant at the data information that science is provided aspect bearing pairing and the quality control.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
Among Fig. 1, comprise worktable 1, buncher 2, the first photoelectric velocity measurement device 3, the second photoelectric velocity measurement device 4, velometer fixed support 5, high pressure valve 6, throttling valve 7, trachea bracket 8, load piece 9, bearing inner race 10, retainer 11, bearing outer ring 12, axle 13, rami tracheales bracer 14, draft tube 15 etc.
As shown in Figure 1, the utility model is a kind of Contact Angle of Ball Bearings measurement mechanism, comprise worktable 1, output shaft buncher 2 vertically upward is installed on the worktable 1, the axle 13 that is used for fixing bearing is installed on the output shaft of buncher 2, the top of bearing is provided with the load piece 9 of the bearing outer ring 12 that compresses bearing, and the top of load piece 9 is provided with the load piece drive unit that drives its rotation, and the speed measuring device of measuring load piece 9 and axle 13 rotating speeds is installed on the worktable 1.
Load piece drive unit comprises draft tube 15, rami tracheales bracer 14, trachea bracket 8, throttling valve 7 and high pressure valve 6, one end of draft tube 15 links to each other with source of the gas, its other end links to each other with rami tracheales bracer 14, rami tracheales bracer 14 links to each other with trachea bracket 8 by tracheae, be furnished with two high pressure valves 6 on the trachea bracket 8, every high pressure valve 6 links to each other with the tracheae of rami tracheales bracer 14 by throttling valve 7.
Speed measuring device comprises the first photoelectric velocity measurement device 3 and the second photoelectric velocity measurement device 4, the first photoelectric velocity measurement device 3 and the second photoelectric velocity measurement device 4 are installed on the velometer fixed support 5, the position of the first photoelectric velocity measurement device 3 is corresponding with load piece 9, and the second photoelectric velocity measurement device 4 is corresponding with axle 13.
Use the method for the utility model measurement Contact Angle of Ball Bearings as follows: ball bearing comprises bearing inner race 10, retainer 11, steel ball and bearing outer ring 12, apply axial preload at bearing outer ring 12, guarantee that steel ball, inner ring raceway, outer ring raceway are non-slip each other, with bearing inner race 10 and bearing outer ring 12 with opposite direction rotation, adjust the rotating speed of bearing inner race 10 and bearing outer ring 12, record the rotating speed of bearing inner race 10 and bearing outer ring 12 when making retainer 11 keep relatively static, according to formula α=arccos[D
Cp(n
i+ n
e)/D
w(n
i-n
e)] the contact angle α of calculation bearing.
Principle of work of the present utility model is: the rotating speed that has adopted bearing internal external snare differential velocity to equal at 0 o'clock recently calculates contact angle α, and formula proving is as follows:
υ
i+υ
e=0，
υ
i＝πn
iD
cp(1-γ)/60，
υ
e＝πn
eD
cp(1+γ)/60，
γ＝D
wcosα/D
cp
Derivation result is: cos α=D
Cp(n
i+ n
e)/D
w(n
i-n
e)
α=arccos[D
cp(n
i+n
e)/D
w?(n
i-?n
e)]
In the formula: α is the actual contact angle,
D
CpBe the center-diameter of design bearing,
D
wBe the diameter of steel ball,
n
iBe the rotating speed of bearing inner race,
n
eBe the rotating speed of bearing outer ring,
υ
iBe the linear velocity at bearing inner race contact point place,
υ
eLinear velocity for bearing outer ring contact point place.
The measurement mechanism course of work of the present utility model is as follows: measured bearing is installed on the axle 13, and the piece 9 of will loading is pressed on the measured bearing, guarantees can not skid between bearing enclose and the steel ball.Start buncher 2, manual rotation load piece 9, direction and bearing inner race 10 reverse rotations that bearing outer ring 12 is rotated.Open throttling valve 7 and allow valve 6 blow 9 rotations of load piece, keep blowing the frictional resistance that kinetic force overcomes bearing inside, load piece 9 can at the uniform velocity be rotated.The rotating speed of regulating buncher 2 is observed the state of retainer 11 simultaneously, until the rotating speed of retainer 11 is relatively static.Read the rotation speed n on the Internal and external cycle velocity metre this moment
iAnd n
eAgain with n
iAnd n
eThe substitution formula just can calculate the actual contact angle α of this bearing.
Claims (3)
1. Contact Angle of Ball Bearings measurement mechanism, it is characterized in that: comprise worktable (1), output shaft buncher (2) vertically upward is installed on the described worktable (1), the axle (13) that is used for fixing bearing is installed on the output shaft of described buncher (2), the top of described bearing is provided with the load piece (9) of the bearing outer ring (12) that compresses described bearing, the top of described load piece (9) is provided with the load piece drive unit that drives its rotation, and the speed measuring device of measuring described load piece (9) and described axle (13) rotating speed is installed on the described worktable (1).
2. according to Contact Angle of Ball Bearings measurement mechanism claimed in claim 1, it is characterized in that: described load piece drive unit comprises draft tube (15), rami tracheales bracer (14), trachea bracket (8), throttling valve (7) and high pressure valve (6), one end of described draft tube (15) links to each other with source of the gas, its other end links to each other with described rami tracheales bracer (14), described rami tracheales bracer (14) links to each other with trachea bracket (8) by tracheae, be furnished with two high pressure valves (6) on the described trachea bracket (8), every described high pressure valve (6) links to each other with the tracheae of described rami tracheales bracer (14) by throttling valve (7).
3. according to Contact Angle of Ball Bearings measurement mechanism claimed in claim 1, it is characterized in that: described speed measuring device comprises the first photoelectric velocity measurement device (3) and the second photoelectric velocity measurement device (4), described the first photoelectric velocity measurement device (3) and described the second photoelectric velocity measurement device (4) are installed on the velometer fixed support (5), the position of described the first photoelectric velocity measurement device (3) is corresponding with described load piece (9), and described the second photoelectric velocity measurement device (4) is corresponding with described axle (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220374739 CN202757604U (en) | 2012-07-31 | 2012-07-31 | Ball bearing contact angle measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220374739 CN202757604U (en) | 2012-07-31 | 2012-07-31 | Ball bearing contact angle measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202757604U true CN202757604U (en) | 2013-02-27 |
Family
ID=47736777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220374739 Withdrawn - After Issue CN202757604U (en) | 2012-07-31 | 2012-07-31 | Ball bearing contact angle measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202757604U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749063A (en) * | 2012-07-31 | 2012-10-24 | 无锡市第二轴承有限公司 | Method and device for measuring contact angle of ball bearing |
| CN103954254A (en) * | 2014-05-13 | 2014-07-30 | 安徽千禧精密轴承制造有限公司 | Ball bearing measuring instrument |
| CN104792279A (en) * | 2015-04-21 | 2015-07-22 | 上海天安轴承有限公司 | Bearing contact angle measuring instrument |
| CN104792280A (en) * | 2015-04-21 | 2015-07-22 | 上海大学 | Displacement type bearing contact angle measurement method |
-
2012
- 2012-07-31 CN CN 201220374739 patent/CN202757604U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749063A (en) * | 2012-07-31 | 2012-10-24 | 无锡市第二轴承有限公司 | Method and device for measuring contact angle of ball bearing |
| CN102749063B (en) * | 2012-07-31 | 2015-06-10 | 无锡市第二轴承有限公司 | Method and device for measuring contact angle of ball bearing |
| CN103954254A (en) * | 2014-05-13 | 2014-07-30 | 安徽千禧精密轴承制造有限公司 | Ball bearing measuring instrument |
| CN103954254B (en) * | 2014-05-13 | 2016-08-24 | 安徽千禧精密轴承制造有限公司 | A kind of ball bearing measuring instrument |
| CN104792279A (en) * | 2015-04-21 | 2015-07-22 | 上海天安轴承有限公司 | Bearing contact angle measuring instrument |
| CN104792280A (en) * | 2015-04-21 | 2015-07-22 | 上海大学 | Displacement type bearing contact angle measurement method |
| CN104792280B (en) * | 2015-04-21 | 2017-08-11 | 上海大学 | Displacement-type bearing touch angle measuring method |
| CN104792279B (en) * | 2015-04-21 | 2017-08-25 | 上海天安轴承有限公司 | Bearing touch angle measuring instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130227 Effective date of abandoning: 20150610 |
|
| RGAV | Abandon patent right to avoid regrant |