CN103196609B - Axial load testing method of ball bearing - Google Patents
Axial load testing method of ball bearing Download PDFInfo
- Publication number
- CN103196609B CN103196609B CN201310079912.8A CN201310079912A CN103196609B CN 103196609 B CN103196609 B CN 103196609B CN 201310079912 A CN201310079912 A CN 201310079912A CN 103196609 B CN103196609 B CN 103196609B
- Authority
- CN
- China
- Prior art keywords
- air spindle
- ball bearing
- air
- external diameter
- endoporus
- 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.)
- Active
Links
- 238000012360 testing method Methods 0.000 title description 11
- 238000010998 test method Methods 0.000 claims abstract description 18
- 206010017389 Frotteurism Diseases 0.000 claims abstract description 4
- 238000005303 weighing Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 3
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000007669 thermal treatment Methods 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Abstract
A kind of axial load test method of ball bearing,Tested ball bearing (10) is covered and is placed in positioning support (11) lower end in positioning footstock (9),The connection of air spindle (7) upper end positions footstock and its lower end couples axial bracket (6) and cylinder (3),Cylinder arrangement adjusting nut (2),Locking nut (1),Pedestal (5) configuration air inlet (5.1),Gas vent (5.2),Port (5.3),Bearing holder (housing, cover) (8),End cap (4),The compressed air for being passed through P1 and P pressure into the sealed gas chamber of the formation such as pedestal by port makes air spindle energy ease rotation under no Frotteurism,Steady to the application of tested ball bearing by the compressed air of P pressure,Shock-free axial load,The at the uniform velocity floating of air spindle may be implemented in sealed gas chamber and tested ball bearing is made to realize stepless load axial load for compressed air,Then it is tested the axial load of ball bearing
, this method is reliable, easy to operate.
Description
Technical field
The invention belongs to technical field of bearings, specially refer to a kind of axial load method of testing of ball bearing.
Background technology
Deep groove ball bearing and angular contact ball bearing all can be called ball bearing, need the axial load of test ball bearing under many occasions, to guarantee that ball ball bearing has stability and repeatability.
Conventionally to the mode of ball bearing test axial load, have following several:
1. adopt fixing counterweight to load the axial load of test ball bearing;
2. adopt the fixing mode of counterweight and lever combination to load the axial load of test ball bearing;
3. adopt hydraulic loaded mode to carry out the axial load of test ball bearing;
4. adopt pneumatically loading mode to carry out the axial load of test ball bearing.
There are the following problems for above-mentioned four kinds of modes:
During test, require added axial load accurate, quick, stepless adjustable, and require proving installation reliable, simple, convenient, and above-mentioned four kinds of modes have certain limitation, can not meet the requirement of the test axial load of ball bearing completely.
Summary of the invention
For addressing the above problem, the invention provides a kind of axial load method of testing of ball bearing, this axial load method of testing is once installed and is located tested ball bearing and realize tested ball bearing by a set of proving installation, the pressure producing by pressurized air applies steady, shock-free axial load to tested ball bearing, pressurized air can be realized the at the uniform velocity floating of air spindle and make tested ball bearing realize stepless loading axial load in sealed gas chamber, feature reliable, simple to operate, that method is easy that axial load method of testing has.
For achieving the above object, the present invention adopts following technical scheme:
A kind of axial load method of testing of ball bearing, this axial load method of testing relates to a set of proving installation, described proving installation comprises set nut, adjusting nut, cylinder, end cap, base, axial bracket, air spindle, bearing holder (housing, cover), location footstock, positioning support, wherein the net sectional area of air spindle in the given situation of external diameter represents with S, air spindle in the given situation of external diameter through check weighing W
1represent, axially bracket is through check weighing W
2represent, location footstock is through check weighing W
3represent, tested ball bearing is through check weighing W
4represent, the axial load that tested ball bearing is loaded represents with F,
, P represents the pressure of sealed gas chamber.
The inner ring of tested ball bearing is enclosed within the cylinder of footstock upper end, location, the outer ring of tested ball bearing is placed in fixing positioning support lower end, the boss of footstock lower end, location connects with the groove of air spindle upper end, in the endoporus of air spindle lower end, dispose the axial bracket with L-type hook, described L-type hangs in the annular groove of spherical crown shape place, cylinder piston rod upper end configuration, the lower end of cylinder piston rod configures adjusting nut successively, set nut, the base with three inner bore of step is socketed on air spindle after fixing, in the inner bore of step of base upper end, assembled shaft bearing sleeve and bearing holder (housing, cover) internal diameter mate with air spindle external diameter, the air admission hole configuring in the inner bore of step of base upper end is over against the annular air inlet groove configuring on bearing holder (housing, cover), on the bearing holder (housing, cover) being axially connected with described annular air inlet groove, also dispose several ring-shaped throttling grooves, in every described ring-shaped throttling groove, be evenly distributed with several radially throttling endoporus, inner bore of step internal diameter in the middle of base is less than the inner bore of step internal diameter of base upper end and is greater than the external diameter of air spindle, in the inner bore of step in the middle of base, configure vent port, the inner bore of step internal diameter of base lower end is less than the inner bore of step internal diameter in the middle of base, in the inner bore of step of base lower end, configure port, the lower end of base is by bolt-connection end cap, the inner hole sleeve of end cap is connected on the upper end cover of cylinder, between the intermediate step endoporus of base and its lower end inner bore of step, form inner convex platform hole, described inner convex platform hole internal diameter mates with air spindle external diameter, described inner convex platform hole, air spindle, described flange and end cap form sealed gas chamber, the cylinder body of cylinder and base are according to the relative position of tested ball bearing that air spindle was equipped with and positioning support and locate fixing.
Tested ball bearing is before axially loading, first close vent port UNICOM's air admission hole passes into pressurized air and air spindle is upwards floated along its axis direction in ring-shaped throttling groove described in several, then the make progress axial bracket of jack-up and air spindle of the described spherical crown by cylinder piston rod upper end, make the gap of reserved 0.3～0.5mm between the outer ring of tested ball bearing and positioning support, described gap after measured after again the lower end configuration of standby tight cylinder piston rod adjusting nut and by the stroke of set nut lock cylinder piston rod.
When tested ball bearing is axially loaded, by port, in described sealed gas chamber, pass into P
1the pressurized air of equalized pressure, when
time, represent P
1balance common the produced weight of axial bracket, air spindle, location footstock and tested ball bearing make air spindle in quick condition, air spindle can be eliminated described gap reserved between the outer ring of tested ball bearing and positioning support in quick condition, and is now keeping P
1under state, axially the L-type of bracket hook does not contact with the described annular groove of cylinder piston rod upper end, after time delay is switched again by port to the pressurized air that passes into P pressure in described sealed gas chamber, under the effect of P, air spindle continues upwards float and tested ball bearing is applied to steady, shock-free axial load along its axis direction, now use hand rotary air main shaft, make air spindle without easily rotating under Frotteurism, P can read by the tensimeter of the outer configuration of port, and the axial load that tested ball bearing is loaded is passed through
calculate, described compressed-air actuated bleed pressure can not be less than 0.5MPa.
After tested ball bearing axial load has been tested, first by port, emit and in described sealed gas chamber, pass into the pressurized air of P pressure and emit last residual air by vent port, then after the downward return of cylinder, in the cylinder of footstock upper end, location, take off tested ball bearing.
Cylinder comprises cylinder body, piston rod, upper end cover and bottom end cover, the upper end of cylinder piston rod is spherical crown shape, on the downward piston rod in spherical crown shape place, dispose an annular groove, axially the L-type hook of bracket configuration can move up and down along described annular groove, the lower end external diameter car of piston rod is shaped with external thread, described external thread spin set nut and adjusting nut, adjusting nut can regulate the effective travel of described piston rod.
The external diameter of the tolerance clearance between air spindle external diameter and bearing holder (housing, cover) endoporus and air spindle lower end endoporus and the axially tolerance clearance between bracket external diameter and air spindle is relevant, when air spindle external diameter is during in 50～75mm, tolerance clearance between air spindle external diameter and bearing holder (housing, cover) endoporus is 0.022～0.026mm, and air spindle lower end endoporus and the axially tolerance clearance between bracket external diameter are 0.028-0.032mm; When air spindle external diameter is during in 75～100mm, the tolerance clearance between air spindle external diameter and bearing holder (housing, cover) endoporus is 0.025-0.030mm, and air spindle lower end endoporus and the axially tolerance clearance between bracket external diameter are 0.032-0.038mm; When air spindle external diameter is during in 100～125mm, the tolerance clearance between air spindle external diameter and bearing holder (housing, cover) endoporus is 0.032-0.037mm, and air spindle lower end endoporus and the axially tolerance clearance between bracket external diameter are 0.040-0.045mm; When air spindle external diameter < 50mm or > 125mm, the tolerance clearance between air spindle external diameter and bearing holder (housing, cover) endoporus and air spindle lower end endoporus and the axially tolerance clearance between bracket external diameter are determined at random with reference to above-mentioned three kinds of situations.
Between the upper surface of bearing holder (housing, cover) and base intermediate step endoporus, gap is controlled at 1.5～2.0mm, bearing holder (housing, cover) is controlled at 0.015～0.020mm with the gap that coordinates of base upper end step endoporus, in the configuration quantity of the above ring-shaped throttling groove of bearing holder (housing, cover) and described ring-shaped throttling groove, the configuration quantity of the radially throttling endoporus of even cloth is relevant to air spindle external diameter, when air spindle external diameter is during in 50～75mm, the configuration quantity of described annular groove is four, and the configuration quantity of described radially throttling endoporus is 12; When air spindle external diameter is during in 75～100mm, the configuration quantity of described annular groove is four, and the configuration quantity of described radially throttling endoporus is 10 lands; When air spindle external diameter is during in 100～125mm, the configuration quantity of described annular groove is land, and the configuration quantity of described radially throttling endoporus is 20; When air spindle external diameter < 50mm or > 125mm, the configuration quantity of the configuration quantity of described annular groove and described radially throttling endoporus is determined at random with reference to above-mentioned three kinds of situations; The equal symmetry of several described annular groove of configuration is positioned at the two ends of described annular air inlet groove, axial spacing between axial spacing between described annular air inlet groove and adjacent described annular air inlet groove and described annular air inlet groove and adjacent described annular air inlet groove is all controlled at 26mm, described radially throttling endoporus consists of the circular hole of 8 mm and the bottom outlet coaxial cable of 0.3mm, described bottom outlet is positioned at the inner-diameter end of bearing holder (housing, cover) 8, and described annular air inlet groove all and between several described annular air inlet groove is axially connected.
Location the cylinder external diameter of footstock upper end and the internal diameter of tested ball bearing 10 inner rings match and the gap that coordinates is not more than 0.006mm, locate that the boss of footstock lower end and the groove of air spindle 7 upper ends match and the gap that coordinates is not more than 0.005mm.
Positioning support is the positioning datum of tested ball bearing, and the strong point of positioning support lower end must be supported on the cycle surface of tested ball bearing, and the symcenter axis of positioning support and the error of perpendicularity of air spindle upper surface can not be greater than 0.002mm.
Owing to having adopted technical scheme as mentioned above, the present invention has following good effect:
1. method of the present invention adopts the tested ball bearing in location that is once installed, and has eliminated the impact producing due to positioning error, has guaranteed accuracy of the present invention.
2. method of the present invention is the axial load of the tested ball bearing of a kind of direct test, air spindle both can be made friction free swivel bearing, can do axially-movable again, under compressed-air actuated effect, air spindle upwards floats and tested ball bearing is applied to steady, shock-free axial load, pressurized air can be realized the at the uniform velocity floating of air spindle and tested ball bearing is realized without differential loading axial load in sealed gas chamber, so the present invention has feature reliable, simple to operate, that method is easy.
3. method of the present invention is except for deep groove ball bearing or angular contact ball bearing, also can measure deep groove ball bearing or the bulge quantity of angular contact ball bearing and axial rigidity.
Accompanying drawing explanation
Fig. 1 is the position relationship schematic diagram of the present invention while loading for ball bearing axial load.
In Fig. 1: 1-set nut; 2-adjusting nut; 3-cylinder; 4-end cap; 5-base; 5.1-air admission hole; 5.2-vent port; 5.3-port; The axial bracket of 6-; 7-air spindle; 8-bearing holder (housing, cover); 9-locates footstock; The tested ball bearing of 10-; 11-positioning support.
Embodiment
The present invention is a kind of axial load method of testing of ball bearing, this axial load method of testing is once installed and is located tested ball bearing and realize tested ball bearing by a set of proving installation, the pressure producing by pressurized air applies steady, shock-free axial load to tested ball bearing, pressurized air can be realized the at the uniform velocity floating of air spindle and make tested ball bearing realize stepless loading axial load in sealed gas chamber, feature reliable, simple to operate, that method is easy that axial load method of testing has.
In conjunction with Fig. 1, described proving installation comprises set nut 1, adjusting nut 2, cylinder 3, end cap 4, base 5, axial bracket 6, air spindle 7, bearing holder (housing, cover) 8, location footstock 9, positioning support 11, wherein the net sectional area of air spindle 7 in the given situation of external diameter represents with S, air spindle 7 in the given situation of external diameter through check weighing W
1represent, axially bracket 6 is through check weighing W
2represent, location footstock 9 is through check weighing W
3represent, tested ball bearing 10 is through check weighing W
4represent, the axial load that tested ball bearing 10 is loaded represents with F,
, P represents the pressure of sealed gas chamber, as long as measure the now pressure P of described sealed gas chamber, just can calculate the axial load of tested ball bearing 10.
By the following examples, can explain in more detail the present invention, the present invention is not limited to the following examples, discloses object of the present invention and is intended to protect all changes and improvements in the scope of the invention.
Cylinder 3 comprises cylinder body, piston rod, upper end cover and bottom end cover, the upper end of cylinder 3 piston rods is spherical crown shape, on the downward piston rod in spherical crown shape place, dispose an annular groove, axially the L-type hook of bracket 6 configurations can move up and down along described annular groove, the lower end external diameter car of piston rod is shaped with external thread, described external thread spin set nut 1 and adjusting nut 2, adjusting nut 2 can regulate the effective travel of described piston rod.
The external diameter of the tolerance clearance between air spindle 7 external diameters and bearing holder (housing, cover) 8 endoporus and air spindle 7 lower end endoporus and the axially tolerance clearance between bracket 6 external diameters and air spindle 7 is relevant, when air spindle 7 external diameters are during in 50～75mm, tolerance clearance between air spindle 7 external diameters and bearing holder (housing, cover) 8 endoporus is 0.022～0.026mm, and air spindle 7 lower end endoporus and the axially tolerance clearance between bracket 6 external diameters are 0.028-0.032mm; When air spindle 7 external diameters are during in 75～100mm, the tolerance clearance between air spindle 7 external diameters and bearing holder (housing, cover) 8 endoporus is 0.025-0.030mm, and air spindle 7 lower end endoporus and the axially tolerance clearance between bracket 6 external diameters are 0.032-0.038mm; When air spindle 7 external diameters are during in 100～125mm, the tolerance clearance between air spindle 7 external diameters and bearing holder (housing, cover) 8 endoporus is 0.032-0.037mm, and air spindle 7 lower end endoporus and the axially tolerance clearance between bracket 6 external diameters are 0.040-0.045mm; When air spindle 7 external diameter < 50mm or > 125mm, the tolerance clearance between air spindle 7 external diameters and bearing holder (housing, cover) 8 endoporus and air spindle 7 lower end endoporus and the axially tolerance clearance between bracket 6 external diameters are determined at random with reference to above-mentioned three kinds of situations; Air spindle 7 suggestions adopt 9Cr18 stainless steel to make, and after its thermal treatment, hardness is controlled at HRC50-55.
Between the upper surface of bearing holder (housing, cover) 8 and base 5 intermediate step endoporus, gap is controlled at 1.5～2.0mm, bearing holder (housing, cover) 8 is controlled at 0.015～0.020mm with the gap that coordinates of base 5 upper end step endoporus, in the configuration quantity of bearing holder (housing, cover) 8 the above ring-shaped throttling groove and described ring-shaped throttling groove, the configuration quantity of the radially throttling endoporus of even cloth is relevant to air spindle 7 external diameters, when air spindle 7 external diameters are during in 50～75mm, the configuration quantity of described annular groove is four, and the configuration quantity of described radially throttling endoporus is 12, when air spindle 7 external diameters are during in 75～100mm, the configuration quantity of described annular groove is four, and the configuration quantity of described radially throttling endoporus is 10 lands, when air spindle 7 external diameters are during in 100～125mm, the configuration quantity of described annular groove is land, and the configuration quantity of described radially throttling endoporus is 20, when air spindle 7 external diameter < 50mm or > 125mm, the configuration quantity of the configuration quantity of described annular groove and described radially throttling endoporus is determined at random with reference to above-mentioned three kinds of situations, the equal symmetry of several described annular groove of configuration is positioned at the two ends of described annular air inlet groove, axial spacing between axial spacing between described annular air inlet groove and adjacent described annular air inlet groove and described annular air inlet groove and adjacent described annular air inlet groove is all controlled at 26mm, described radially throttling endoporus consists of the circular hole of 8 mm and the bottom outlet coaxial cable of 0.3mm, described bottom outlet is positioned at the inner-diameter end of bearing holder (housing, cover) 8, described annular air inlet groove all and between several described annular air inlet groove is axially connected, the axial notch that the mode being axially connected can arrange by bearing holder (housing, cover) 8 one end is realized, bearing holder (housing, cover) 8 suggestions adopt tin bronze to make, the groove width suggestion of described annular air inlet groove and several described annular air inlet grooves is set to 10mm, and its groove depth suggestion is set to 3mm, the external diameter of bearing holder (housing, cover) 8 relatively right alignment or the deviation from cylindrical form of its internal diameter can not be greater than 0.002mm.
Location the cylinder external diameter of footstock 9 upper ends and the internal diameter of tested ball bearing 10 inner rings match and the gap that coordinates is not more than 0.006mm, the location boss of footstock 9 lower ends and the groove of air spindle 7 upper ends match and the gap that coordinates is not more than 0.005mm, the maximum outside diameter of suggestion location footstock 9 equates with the external diameter of tested ball bearing 10 inner rings, footstock 9 suggestions in location adopt GCr15SiMn to make, hardness after its thermal treatment is controlled at HRC60-65, and location footstock 9 can be made according to the tested ball bearing 10 of different size as changing part.
Positioning support 11 is positioning datums of tested ball bearing 10, the strong point of positioning support 11 lower ends must be supported on the cycle surface of tested ball bearing 10, the error of perpendicularity of the symcenter axis of positioning support 11 and air spindle 7 upper surfaces can not be greater than 0.002mm, suggestion positioning support 11 adopts GCr15SiMn to make, hardness after its thermal treatment is controlled at HRC55-60, the strong point of positioning support 11 lower ends need be through precise finiss processing, and the flatness error after grinding can not be greater than 0.002mm.
Determine with supporting air spindle 7 fixed position of base 5, but the center line of base 5 must parallel and coincidence with the center line of positioning support 11.
The inner ring of tested ball bearing 10 is enclosed within the cylinder of footstock 9 upper ends, location, the outer ring of tested ball bearing 10 is placed in fixing positioning support 11 lower ends, the boss of footstock 9 lower ends, location connects with the groove of air spindle 7 upper ends, in the endoporus of air spindle 7 lower ends, dispose the axial bracket 6 with L-type hook, described L-type hangs in the annular groove of cylinder 3 spherical crown shape places, piston rod upper end configuration, the lower end of cylinder 3 piston rods configures adjusting nut 2 successively, set nut 1, the base 5 with three inner bore of step is socketed on air spindle 7 after fixing, in the inner bore of step of base 5 upper ends, assembled shaft bearing sleeve 8 and bearing holder (housing, cover) 8 internal diameters mate with air spindle 7 external diameters, the air admission hole 5.1 configuring in the inner bore of step of base 5 upper ends is over against the annular air inlet groove configuring on bearing holder (housing, cover) 8, on the bearing holder (housing, cover) 8 being axially connected with described annular air inlet groove, also dispose several ring-shaped throttling grooves, in every described ring-shaped throttling groove, be evenly distributed with several radially throttling endoporus, inner bore of step internal diameters in the middle of base 5 are less than the inner bore of step internal diameter of base 5 upper ends and are greater than the external diameter of air spindle 7, in inner bore of step in the middle of base 5, configure vent port 5.2, the inner bore of step internal diameter of base 5 lower ends is less than the inner bore of step internal diameter in the middle of base 5, in the inner bore of step of base 5 lower ends, configure port 5.3, the lower end of base 5 is by bolt-connection end cap 4, the inner hole sleeve of end cap 4 is connected on the upper end cover of cylinder 3, between the intermediate step endoporus of base 5 and its lower end inner bore of step, form inner convex platform hole, described inner convex platform hole internal diameter mates with air spindle 7 external diameters, described inner convex platform hole, air spindle 7, described flange and end cap 4 form sealed gas chamber, the cylinder body of cylinder 3 and base 5 are according to the relative position of tested ball bearing 10 that air spindle 7 was equipped with and positioning support 11 and locate fixing.
Tested ball bearing 10 is before axially loading, first close vent port 5.2Bing UNICOM air admission hole 5.1 passes into pressurized air and air spindle 7 is upwards floated along its axis direction in ring-shaped throttling groove described in several, then the make progress axial bracket 6 of jack-up and air spindle 7 of the described spherical crown by cylinder 3 piston rod upper ends, make the gap of reserved 0.3～0.5mm between the outer ring of tested ball bearing 10 and positioning support 11, described gap after measured after more standby tight cylinder 3 piston-rod lower ends configurations adjusting nut 2 and by the stroke of set nut 1 lock cylinder 3 piston rods.
When tested ball bearing 10 is axially loaded, by port 5.3, in described sealed gas chamber, pass into P
1the pressurized air of equalized pressure, when
time, represent P
1balance common the produced weight of axial bracket 6, air spindle 7, location footstock 9 and tested ball bearing 10 make air spindle 7 in quick condition, air spindle 7 can be eliminated described gap reserved between the outer ring of tested ball bearing 10 and positioning support 11 in quick condition, and is now keeping P
1under state, axially the L-type of bracket 6 hook does not contact with the described annular groove of cylinder 3 piston rod upper ends, after time delay is switched again by port 5.3 to the pressurized air that passes into P pressure in described sealed gas chamber, under the effect of P, air spindle 7 continues upwards float and tested ball bearing 10 is applied steadily along its axis direction, shock-free axial load, now use hand rotary air main shaft 7, make air spindle 7 without easily rotating under Frotteurism, P can read by the tensimeter of port 5.3 outer configurations, the axial load that tested ball bearing 10 is loaded is passed through
calculate, described compressed-air actuated bleed pressure can not be less than 0.5MPa, and 0.5MPa realizes P
1required minimum bleed pressure, P
1and ≠ 0.5MPa, the certain > P of P
1.
After tested ball bearing 10 axial loads have been tested, first by port 5.3, emit and in described sealed gas chamber, pass into the pressurized air of P pressure and emit last residual air by vent port 5.2, then after the downward return of cylinder 3, in the cylinder of footstock 9 upper ends, location, take off tested ball bearing 10.
Method of the present invention is except for the test of deep groove ball bearing or the axial load of angular contact ball bearing, also can measure deep groove ball bearing or the bulge quantity of angular contact ball bearing and axial rigidity, measuring method about bulge quantity and axial rigidity can be carried out with reference to method of the present invention, and detail does not separately repeat.
The embodiment selecting in this article in order to disclose object of the present invention, current think suitable, but will be appreciated that: the present invention is intended to comprise that all belong to all changes and the improvement of the embodiment in this design and the scope of the invention.
Claims (6)
1. the axial load method of testing of a ball bearing, this axial load method of testing relates to a set of proving installation, described proving installation comprises set nut (1), adjusting nut (2), cylinder (3), end cap (4), base (5), axial bracket (6), air spindle (7), bearing holder (housing, cover) (8), location footstock (9), positioning support (11), wherein the net sectional area of air spindle (7) in the given situation of external diameter represents with S, air spindle (7) in the given situation of external diameter through check weighing W
1represent, axially bracket (6) is through check weighing W
2represent, location footstock (9) is through check weighing W
3represent, tested ball bearing (10) is through check weighing W
4represent, the axial load that tested ball bearing (10) is loaded represents with F,
p represents the pressure of sealed gas chamber; It is characterized in that:
The inner ring of tested ball bearing (10) is enclosed within the cylinder of footstock (9) upper end, location, the outer ring of tested ball bearing (10) is placed in fixing positioning support (11) lower end, the boss of footstock (9) lower end, location connects with the groove of air spindle (7) upper end, in the endoporus of air spindle (7) lower end, dispose the axial bracket (6) with L-type hook, described L-type hangs in the annular groove of spherical crown shape place, cylinder (3) piston rod upper end configuration, the lower end of cylinder (3) piston rod configures adjusting nut (2) successively, set nut (1), the base (5) with three inner bore of step is socketed on air spindle (7) after fixing, in the inner bore of step of base (5) upper end, assembled shaft bearing sleeve (8) and bearing holder (housing, cover) (8) internal diameter mate with air spindle (7) external diameter, the air admission hole (5.1) configuring in the inner bore of step of base (5) upper end is over against the annular air inlet groove configuring on bearing holder (housing, cover) (8), on the bearing holder (housing, cover) (8) being axially connected with described annular air inlet groove, also dispose several ring-shaped throttling grooves, in every described ring-shaped throttling groove, be evenly distributed with several radially throttling endoporus, inner bore of step internal diameter in the middle of base (5) is less than the inner bore of step internal diameter of base (5) upper end and is greater than the external diameter of air spindle (7), configuration vent port (5.2) in the inner bore of step in the middle of base (5), the inner bore of step internal diameter of base (5) lower end is less than the inner bore of step internal diameter in the middle of base (5), configuration port (5.3) in the inner bore of step of base (5) lower end, the lower end of base (5) is by bolt-connection end cap (4), the inner hole sleeve of end cap (4) is connected on the upper end cover of cylinder (3), between the intermediate step endoporus of base (5) and its lower end inner bore of step, form inner convex platform hole, described inner convex platform hole internal diameter mates with air spindle (7) external diameter, described inner convex platform hole, air spindle (7), flange and end cap (4) form sealed gas chamber, the tested ball bearing (10) that the cylinder body of cylinder (3) and base (5) are equipped with according to air spindle (7) and the relative position of positioning support (11) and locate fixing,
Tested ball bearing (10) is before axially loading, first close vent port (5.2) UNICOM's air admission hole (5.1) passes into pressurized air and air spindle (7) is upwards floated along its axis direction in ring-shaped throttling groove described in several, then the make progress axial bracket of jack-up (6) and air spindle (7) of the described spherical crown by cylinder (3) piston rod upper end, make the gap of reserved 0.3～0.5mm between the outer ring of tested ball bearing (10) and positioning support (11), described gap after measured after more standby tight cylinder (3) piston-rod lower end configuration adjusting nut (2) and by the stroke of set nut (1) lock cylinder (3) piston rod,
When tested ball bearing (10) is axially loaded, by port (5.3), in described sealed gas chamber, pass into P
1the pressurized air of equalized pressure, when
time, represent P
1balance axial bracket (6), air spindle (7), location footstock (9) and common the produced weight of tested ball bearing (10) make air spindle (7) in quick condition, air spindle (7) can be eliminated described gap reserved between the outer ring of tested ball bearing (10) and positioning support (11) in quick condition, and is now keeping P
1under state, axially the L-type of bracket (6) hook does not contact with the described annular groove of cylinder (3) piston rod upper end, after time delay is switched again by port (5.3) to the pressurized air that passes into P pressure in described sealed gas chamber, air spindle under the effect of P (7) continues upwards float and tested ball bearing (10) is applied steadily along its axis direction, shock-free axial load, now use hand rotary air main shaft (7), make air spindle (7) without easily rotating under Frotteurism, P can read by the tensimeter of the outer configuration of port (5.3), the axial load that tested ball bearing (10) is loaded is passed through
calculate, described compressed-air actuated bleed pressure can not be less than 0.5MPa.
2. a kind of axial load method of testing of ball bearing according to claim 1, it is characterized in that: cylinder (3) comprises cylinder body, piston rod, upper end cover and bottom end cover, the upper end of cylinder (3) piston rod is spherical crown shape, on the downward piston rod in spherical crown shape place, dispose an annular groove, axially the L-type hook of bracket (6) configuration can move up and down along described annular groove, the lower end external diameter car of piston rod is shaped with external thread, described external thread spin set nut (1) and adjusting nut (2), adjusting nut (2) can regulate the effective travel of described piston rod.
3. a kind of axial load method of testing of ball bearing according to claim 1, it is characterized in that: the external diameter of the tolerance clearance between air spindle (7) external diameter and bearing holder (housing, cover) (8) endoporus and air spindle (7) lower end endoporus and the axially tolerance clearance between bracket (6) external diameter and air spindle (7) is relevant, when air spindle (7) external diameter is during in 50～75mm, tolerance clearance between air spindle (7) external diameter and bearing holder (housing, cover) (8) endoporus is 0.022～0.026mm, and air spindle (7) lower end endoporus and the axially tolerance clearance between bracket (6) external diameter are 0.028-0.032mm; When air spindle (7) external diameter is during in 75～100mm, tolerance clearance between air spindle (7) external diameter and bearing holder (housing, cover) (8) endoporus is 0.025-0.030mm, and air spindle (7) lower end endoporus and the axially tolerance clearance between bracket (6) external diameter are 0.032-0.038mm; When air spindle (7) external diameter is during in 100～125mm, tolerance clearance between air spindle (7) external diameter and bearing holder (housing, cover) (8) endoporus is 0.032-0.037mm, and air spindle (7) lower end endoporus and the axially tolerance clearance between bracket (6) external diameter are 0.040-0.045mm; When air spindle (7) external diameter < 50mm or > 125mm, the tolerance clearance between air spindle (7) external diameter and bearing holder (housing, cover) (8) endoporus and air spindle (7) lower end endoporus and the axially tolerance clearance between bracket (6) external diameter are determined at random with reference to above-mentioned three kinds of situations.
4. a kind of axial load method of testing of ball bearing according to claim 1, it is characterized in that: between bearing holder (housing, cover) (8) and the upper surface of base (5) intermediate step endoporus, gap is controlled at 1.5～2.0mm, bearing holder (housing, cover) (8) is controlled at 0.015～0.020mm with the gap that coordinates of base (5) upper end step endoporus, in the configuration quantity of the above ring-shaped throttling groove of bearing holder (housing, cover) (8) and described ring-shaped throttling groove, the configuration quantity of the radially throttling endoporus of even cloth is relevant to air spindle (7) external diameter, when air spindle (7) external diameter is during in 50～75mm, the configuration quantity of described ring-shaped throttling groove is four, the configuration quantity of described radially throttling endoporus is 12, when air spindle (7) external diameter is during in 75～100mm, the configuration quantity of described ring-shaped throttling groove is four, and the configuration quantity of described radially throttling endoporus is 16, when air spindle (7) external diameter is during in 100～125mm, the configuration quantity of described ring-shaped throttling groove is six, and the configuration quantity of described radially throttling endoporus is 20, when air spindle (7) external diameter < 50mm or > 125mm, the configuration quantity of the configuration quantity of described ring-shaped throttling groove and described radially throttling endoporus is determined at random with reference to above-mentioned three kinds of situations, the equal symmetry of several described ring-shaped throttling groove of configuration is positioned at the two ends of described annular air inlet groove, axial spacing between described annular air inlet groove and adjacent described annular air inlet groove is controlled at 26mm, described radially throttling endoporus consists of the circular hole of 8 mm and the bottom outlet coaxial cable of 0.3mm, described bottom outlet is positioned at the inner-diameter end of bearing holder (housing, cover) (8), and described annular air inlet groove all and between several described annular air inlet groove is axially connected.
5. a kind of axial load method of testing of ball bearing according to claim 1, it is characterized in that: location the cylinder external diameter of footstock (9) upper end and the internal diameter of tested ball bearing (10) inner ring match and the gap that coordinates is not more than 0.006mm, locate that the boss of footstock (9) lower end and the groove of air spindle (7) upper end match and the gap that coordinates is not more than 0.005mm.
6. a kind of axial load method of testing of ball bearing according to claim 1, it is characterized in that: positioning support (11) is the positioning datum of tested ball bearing (10), the strong point of positioning support (11) lower end must be supported on the cycle surface of tested ball bearing (10), and the error of perpendicularity of the symcenter axis of positioning support (11) and air spindle (7) upper surface can not be greater than 0.002mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310079912.8A CN103196609B (en) | 2013-03-13 | 2013-03-13 | Axial load testing method of ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310079912.8A CN103196609B (en) | 2013-03-13 | 2013-03-13 | Axial load testing method of ball bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103196609A CN103196609A (en) | 2013-07-10 |
| CN103196609B true CN103196609B (en) | 2014-11-19 |
Family
ID=48719304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310079912.8A Active CN103196609B (en) | 2013-03-13 | 2013-03-13 | Axial load testing method of ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103196609B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483055B (en) * | 2014-12-09 | 2017-01-25 | 株洲联诚集团有限责任公司 | Device and method for measuring axial force of rotor bearing of three-phase induction motor |
| CN105758643B (en) * | 2016-03-15 | 2018-07-10 | 洛阳轴承研究所有限公司 | A kind of bearing load carrying capacity detection device |
| CN106050811B (en) * | 2016-08-09 | 2017-10-20 | 中国石油大学(北京) | A kind of piston rod load direct detection means of oil-free shuttling device |
| CN107775823A (en) * | 2017-11-17 | 2018-03-09 | 福建省南安市万福机械有限公司 | A kind of modified main spindle box and the slab cutting machine with modified main spindle box |
| CN108405367A (en) * | 2018-03-06 | 2018-08-17 | 中国航发哈尔滨东安发动机有限公司 | Adjusting pad matching device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4862738A (en) * | 1987-08-20 | 1989-09-05 | Allied-Signal, Inc. | Test system for wheel bearings |
| US5226308A (en) * | 1991-12-26 | 1993-07-13 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | System for testing bearings |
| CN101221076A (en) * | 2007-11-30 | 2008-07-16 | 洛阳轴研科技股份有限公司 | Method and instrument for indirectly measuring pretightening force between conjugate bearings |
| CN102162770A (en) * | 2010-12-31 | 2011-08-24 | 王鸿远 | Large bearing tester |
-
2013
- 2013-03-13 CN CN201310079912.8A patent/CN103196609B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4862738A (en) * | 1987-08-20 | 1989-09-05 | Allied-Signal, Inc. | Test system for wheel bearings |
| US5226308A (en) * | 1991-12-26 | 1993-07-13 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | System for testing bearings |
| CN101221076A (en) * | 2007-11-30 | 2008-07-16 | 洛阳轴研科技股份有限公司 | Method and instrument for indirectly measuring pretightening force between conjugate bearings |
| CN102162770A (en) * | 2010-12-31 | 2011-08-24 | 王鸿远 | Large bearing tester |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103196609A (en) | 2013-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103196609B (en) | Axial load testing method of ball bearing | |
| CN108627344B (en) | Device and method for detecting performance of air floatation ball bearing | |
| CN104625765B (en) | A kind of high accuracy microminiature static air pressure turntable | |
| CN105424361B (en) | A kind of liquid closed type static pressure turntable experimental provision of modifiable flow controller | |
| CN112229307A (en) | Device and method for measuring axial clearance of bearing | |
| CN103047221A (en) | Double-acting air-suspending friction-free air cylinder | |
| CN103016441A (en) | Air flotation cylinder for forming stable air film by microporous material | |
| CN103615466B (en) | A kind of highi degree of accuracy air floating shaft system gas supply mechanism | |
| CN201828227U (en) | Radial windage inspection instrument for rolling bearing | |
| CN107065122B (en) | A kind of optical main mirror electromagnetism supporting arrangement and its method | |
| CN103016528B (en) | Air flotation bearing device capable of preventing axial shifting | |
| CN209386947U (en) | A kind of automobile hub casting coaxiality check fixture | |
| CN201501530U (en) | Suspended-type static balancing machine for large-scale marine propeller | |
| ES2444568T3 (en) | Subject-parts particularly for parts that have a large mass to be machined in machine tools such as vertical lathes and the like | |
| CN209214576U (en) | A kind of equal diameter superdeep holes inside diameter measurement system based on flexible cable traction | |
| CN204357842U (en) | A kind of oil hydraulic cylinder displacement signal being applicable to engineering machinery detects auxiliary device | |
| CN203051488U (en) | Air bearing device for preventing axial float | |
| CN203176049U (en) | Air flotation friction-free air cylinder for adopting cellular materials to form stable air film | |
| CN208818131U (en) | Tooling is examined in the installation of large-sized low-speed exhaust valve of marine diesel engine conical ring | |
| CN201078557Y (en) | Guide rail self-driving type circular turntable of three surfaces static pressure enclosing type | |
| CN204649458U (en) | A kind of sample feeding pipe | |
| CN209214558U (en) | One kind is based on the self-centering deep blind hole linearity measurer of PSD | |
| CN208399292U (en) | Wheel hub hardness test device | |
| CN102803972B (en) | Device for measuring the speed of a fluid flowing in a pipe | |
| CN109297450A (en) | A kind of equal diameter superdeep holes inside diameter measurement system based on flexible cable traction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180509 Address after: 471000 No. 1 axis research road, Jianxi science and Technology Industrial Park, Luoyang, Henan Patentee after: LUOYANG BEARING RESEARCH INSTITUTE Co.,Ltd. Address before: 471039 Fenghua Road 6, hi tech Development Zone, Luoyang, Henan. Patentee before: LUOYANG BEARING SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231219 Address after: 200240 Shanghai city Minhang District humin Road No. 1111 Patentee after: SHANGHAI UNITED BEARING Co.,Ltd. Address before: 471000 No. 1 axis research road, Jianxi science and Technology Industrial Park, Luoyang, Henan Patentee before: LUOYANG BEARING RESEARCH INSTITUTE Co.,Ltd. |
|
| TR01 | Transfer of patent right |