CN201371354Y - Shaft hub interference joint pressing contraposition device - Google Patents
Shaft hub interference joint pressing contraposition device Download PDFInfo
- Publication number
- CN201371354Y CN201371354Y CN200820303929U CN200820303929U CN201371354Y CN 201371354 Y CN201371354 Y CN 201371354Y CN 200820303929 U CN200820303929 U CN 200820303929U CN 200820303929 U CN200820303929 U CN 200820303929U CN 201371354 Y CN201371354 Y CN 201371354Y
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- axle
- press
- desing
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Abstract
The utility model discloses a shaft hub interference joint pressing contraposition device which is especially used for the shaft hub keyless interference joint of a shaft piece and a disc piece and ensures the required contraposition relation of the shaft piece and the disc piece in a circumferential direction after the shaft piece and the disc piece are connected. The shaft hub interference joint pressing contraposition device comprises a contraposition tool and a press tool, wherein the contraposition tool is used for circumferentially positioning the shaft piece and the disc piece respectively, the press tool corresponds to the contraposition tool, the disc piece is axially pressed and sleeved on a shaft by the press tool, the contraposition tool is used for ensuring the circumferential direction of the shaft piece and the disc piece, the shaft piece and the disc piece achieve the required contraposition relation in the circumferential direction, and the press tool is used for pressing and connecting the regulated contrapositive disc piece in an interference mode. When the shaft piece and the disc piece are in the shaft hub keyless interference joint, the shaft hub interference joint pressing contraposition device can ensure the accurate contraposition relation of the shaft piece and the disc piece which are assembled in the circumferential direction. The shaft hub interference joint pressing contraposition device is especially suitable for the interference joint of circular conical surfaces.
Description
Technical field
The utility model relates in mechanical manufacturing field, is used for axle and disk-like accessory are carried out a kind of assembly tooling that propeller boss does not have the key Desing of Interference Joint and can guarantee to connect both relative position relations of assembling back.
Background technology
Propeller boss connects and is divided into the sealed connection of shape and the sealed connection that rubs.Key connecting is mainly adopted in the sealed connection of shape, and interference fit joint is mainly adopted in the sealed connection that rubs.It is good that interference fit joint has neutrality, can transmit the bigger alternation and the characteristics of impact torque, therefore uses wider.In some special occasions, require disk-like accessory (as the dish gear) to be assembled on the axle (as gear shaft) by no key Desing of Interference Joint, to guarantee also that simultaneously disk-like accessory and axle upwards have certain relative position relation in week.The main difficult point that reaches above-mentioned this matching requirements is: disk-like accessory and axle rely on big interference fit to transmit moment of torsion, under the normal condition after disk-like accessory is press-fit into place, axle and disk-like accessory are with regard to relative fixed, disk-like accessory is rotated relative to axle, therefore also just can't adjust disk-like accessory and axle at the relative position that makes progress in week.At present, still untappedly go out a kind of special equipment, being used for that axle and disk-like accessory are carried out propeller boss does not have the key Desing of Interference Joint, and guarantee to connect the assembling back both upwards have the relative position relation of requirement in week.
The utility model content
The technical problem that the utility model solved is: provide a kind of propeller boss Desing of Interference Joint to press-fit alignment device, be exclusively used in and axle and disk-like accessory are carried out propeller boss do not have the key Desing of Interference Joint, and guarantee to connect the assembling back both upwards have the relative position relation of requirement in week.
The technical scheme that solves the problems of the technologies described above is: the propeller boss Desing of Interference Joint press-fits alignment device, comprise and be used for respectively contraposition frock that axle and disk-like accessory are circumferentially located, and being pressed into frock with described contraposition frock is oppositely arranged, disk-like accessory axially is pressed into and is sleeved on the axle by being pressed into frock.
Further be that the described frock that is pressed into comprises an expanding means, swells by the endoporus of described expanding means with disk-like accessory when being pressed into.
As preferably, described expanding means comprises oil pump, and described oil pump is pressed into hydraulic oil by high-pressure oil pipe the mating surface of disk-like accessory and axle.
As preferably, the described frock that is pressed into comprises oil cylinder, and the piston of described oil cylinder is connected with axle by pull bar, and the cylinder body of described oil cylinder is supported on the disk-like accessory by support set.
Further be that the cylinder body of described oil cylinder is supported on the support set by thrust bearing.
Further be, an end of described pull bar connects with male thread, and the other end passes oil cylinder and nut is installed, and the protective cover that is used to prevent the pull bar ejection is installed on the described oil cylinder.
Further be to be connected with back-moving spring between the cylinder body of described oil cylinder and the piston.
As preferably, described contraposition frock comprises a supporting construction, and described supporting construction is provided with and is used for following navigation watch that axle is circumferentially located, and is used for last navigation watch that disk-like accessory is circumferentially located.
Further be that described supporting construction is provided with the pre-tightening apparatus that is used for fixing axle 2.
As preferably, described pre-tightening apparatus comprises the thin-walled cover that is used for radially holding tightly axle, and the hydraulic system that is used to drive thin-walled cover radial contraction.
Further be, described supporting construction is provided with guide finger, and correspondence is provided with location structure on the disk-like accessory, and guide finger and described location structure are suitable when being pressed into.
The beneficial effects of the utility model are: the contraposition frock is used for determining the circumferential orientation of axle and disk-like accessory, makes both upwards meet the requirements of relative position relation in week; Be pressed into that disk-like accessory that frock is used for adjusting to the right place is pressed into and Desing of Interference Joint at axle.By this device axle and disk-like accessory are carried out propeller boss when not having the key Desing of Interference Joint, both upwards have relative position relation accurately in week can to guarantee to connect the assembling back.This device is particularly useful for the taper seat interference fit and connects.
Description of drawings
Fig. 1 is the structural representation after axle and disk-like accessory do not have the key Desing of Interference Joint.
Fig. 2 press-fits the structural representation of alignment device for the application's propeller boss Desing of Interference Joint.
Fig. 3 press-fits the structural representation that is pressed into frock in the alignment device for the application's propeller boss Desing of Interference Joint.
Fig. 4 press-fits the structural representation of contraposition frock in the alignment device for the application's propeller boss Desing of Interference Joint.
Fig. 5 is the vertical view of Fig. 4.
Be labeled as among the figure: disk-like accessory 1, axle 2, oil pump 3, oil pump 4, oil pump 5, go up navigation watch 6, be pressed into frock 7, navigation watch 8, guide finger 9, contraposition frock 10, fairlead 11, support set 12, thrust bearing 13, oil cylinder 14, piston 15, pull bar 16, back-moving spring 17, protective cover 18, high-pressure oil pipe 19, oil pipe 20, thin-walled cover 21, oil cylinder 22, nut 23 down.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Press-fit alignment device as Fig. 1～propeller boss Desing of Interference Joint shown in Figure 5, comprise and be used for respectively contraposition frock 10 that axle 2 and disk-like accessory 1 are circumferentially located, and being pressed into frock 7 with described contraposition frock 10 is oppositely arranged, disk-like accessory 1 axially is pressed into and is sleeved on the axle 2 by being pressed into frock 7.Wherein, contraposition frock 10 is used for determining the circumferential orientation of axle 2 and disk-like accessory 1, makes both upwards meet the requirements of relative position relation in week; Be pressed into that disk-like accessory 1 that frock 7 is used for adjusting to the right place is pressed into and Desing of Interference Joint at axle 2.By this device axle 2 and disk-like accessory 1 are carried out propeller boss when not having the key Desing of Interference Joint, both upwards have relative position relation comparatively accurately in week to guarantee to connect the assembling back.
Under normal circumstances, after disk-like accessory 1 was press-fit into place, axle 2 and disk-like accessory 1 be with regard to relative fixed, can't make again disk-like accessory 1 relatively axle 2 rotate, with adjust disk-like accessory 1 with spools 2 at the relative position that makes progress in week.For overcoming above-mentioned this technical barrier, disk-like accessory 1 still can be rotated relative to axle 2 after being press-fit into place, thereby further utilize the circumferential relative position between 10 pairs of disk-like accessories 1 of contraposition frock and the axle 2 to finely tune, improve the assembly precision of axle 2 and disk-like accessory 1, as Fig. 2 and Fig. 3, be pressed into frock 7 and comprise an expanding means, swell by the endoporus of described expanding means when being pressed into disk-like accessory 1.Swell by the endoporus of expanding means disk-like accessory 1, the interference that produces when elimination press-fits, thereby disk-like accessory 1 can be rotated on axle 2, and utilize the circumferential relative position between 10 pairs of disk-like accessories 1 of contraposition frock and the axle 2 to finely tune, improve assembly precision.And expanding means acts on disk-like accessory 1 when being pressed into, and makes disk-like accessory 1 and axle 2 that relative displacement takes place when disk-like accessory 1 endoporus is swollen, guarantees that disk-like accessory 1 is press-fit into place more easily.
As Fig. 2 and Fig. 3, as a kind of concrete embodiment of expanding means, described expanding means comprises oil pump 4, and described oil pump 4 is pressed into hydraulic oil by high-pressure oil pipe 19 mating surface of disk-like accessory 1 and axle 2.Above-mentioned this expanding means utilization is pressed into the hydraulic oil of super-pressure at the disk-like accessory 1 and the mating surface of axle 2, forces the endoporus elasticity support of disk-like accessory 1 big, eliminates the interference that produces when press-fiting.For avoid hydraulic oil from the slit of mating surface, to leak as far as possible, can on the inner hole wall of disk-like accessory 1, annular groove be set.Above-mentioned this expanding means especially is fit to the situation when axle 2 and disk-like accessory 1 are conical surface interference fit joint, its concrete method of operating is: after disk-like accessory 1 and axle 2 cone match are tight, start oil pump 4, hydraulic oil is pressed into the mating surface of disk-like accessory 1 and axle 2, make the endoporus elasticity support of disk-like accessory 1 big, make disk-like accessory 1 be pressed into one section size by being pressed into frock 7 simultaneously; Repeat aforesaid operations, up to the position that disk-like accessory 1 is pushed regulation.Above-mentioned this expanding means has the advantages that distending is even, operating reliability is high.
As Fig. 2 and Fig. 3, as a kind of concrete embodiment that is pressed into frock 7, the described frock 7 that is pressed into comprises oil cylinder 14, and the piston 15 of described oil cylinder 14 is connected with axle 2 by pull bar 16, and the cylinder body of described oil cylinder 14 is supported on the disk-like accessory 1 by support set 12.Cylinder body and the piston 15 of frock 7 by oil cylinder 14 that be pressed into of said structure relatively moves disk-like accessory 1 and axle 2.Specifically, described oil cylinder 14 is communicated with oil pump 3 by oil pipe 20, and behind the startup oil pump 3, hydraulic oil promotes the cylinder body axially-movable of piston 15 relative oil cylinders 14; Simultaneously owing to piston 15 is connected with axle 2 by pull bar 16, the cylinder body of oil cylinder 14 is supported on the disk-like accessory 1 by support set 12, when the movement of cylinder block of piston 15 relative oil cylinders 14, pull bar 16 and support set 12 act on a pair of opposite power on axle 2 and the disk-like accessory 1 respectively, thereby disk-like accessory 1 is pressed into.As Fig. 2 and Fig. 3, can reset rapidly in order to make oil cylinder 14 release back pistons 15, enhance productivity, be connected with back-moving spring 17 between the cylinder body of described oil cylinder 14 and the piston 15.
In order to cooperate expanding means, disk-like accessory 1 can be rotated relative to axle 2 after being press-fit into place easily, the cylinder body of described oil cylinder 14 is supported on the support set 12 by thrust bearing 13.Adopt thrust bearing 13 can bear powerful axial force, and oil cylinder and disk-like accessory can be relatively rotated.Thereby oil cylinder 14 rollings are supported on the support set 12.When rotating disk-like accessory 1, support set 12 relative disk-like accessories 1 are static.
As Fig. 2 and Fig. 3, as a kind of concrete mode that pull bar 16 is connected with axle 2, piston 15, one end of described pull bar 16 and axle 2 thread connection, the other end passes oil cylinder 14 and nut 23 is installed, and the protective cover 18 that is used to prevent pull bar 16 ejections is installed on the described oil cylinder 14.The end of described pull bar 16 is passed oil cylinder 14 and is set with nut 23, and pull bar 16 is connected with piston 15.Protective cover 18 plays the safeguard protection effect, prevents when pull bar 16 is stressed fracture under unexpected situation and ejects.
As Fig. 2, Fig. 4 and Fig. 5, a kind of specific embodiment as contraposition frock 10, described contraposition frock 10 comprises a supporting construction, and described supporting construction is provided with and is used for following navigation watch 8 that axle 2 is circumferentially located, and is used for last navigation watch 6 that disk-like accessory 1 is circumferentially located.As Fig. 5, the described navigation watch 6 of going up adopts the measuring principle identical with altimeter with following navigation watch 8, has a telescopic measuring stick on it, and the length that measuring stick stretches out is presented on the dial plate.With among Fig. 5 as the dish gear of disk-like accessory 1, and be example as the gear shaft of axle 2, illustrate how to utilize navigation watch 6 and following navigation watch 8 respectively disk-like accessory 1 and axle 2 circumferentially to be located: will go up navigation watch 6 and following navigation watch 8 and be separately positioned on predetermined angle, measuring stick on the last navigation watch 6 ejects with the side point of a tooth on the dish gear and contacts, and the side point of a tooth contacts on the measuring stick ejection of following navigation watch 8 and the gear shaft.Pre-determine length that the measuring stick on the navigation watch 6 ejects and the length that ejects of the measuring stick on the navigation watch 8 down, for conveniently reading, can be with these two length as benchmark and make zero.Like this, when the numerical value of last navigation watch 6 and following navigation watch 8 demonstrations is non-vanishing, makes both rotate to predetermined orientation by rotating disc gear and gear shaft, thereby make both upwards meet the requirements of relative position relation in week.
As Fig. 4, for after axle 2 axial locations are adjusted, prevent that it from rotating, described supporting construction is provided with the pre-tightening apparatus that is used for circumferential fixed axis 2.Fig. 4 shows a kind of simple embodiment of this pre-tightening apparatus: described pre-tightening apparatus comprises the thin-walled cover 21 that is used for radially holding tightly axle 2, and is used to drive the hydraulic system that thin-walled overlaps 21 radial contraction.Specifically, described thin-walled cover 21 is loop configuration, and this loop configuration is embedded in the through hole of an annular, has certain clearance between its hole wall and the thin-walled cover 21.Described hydraulic system comprises an oil pump 5, and this oil pump 5 is communicated with by the input of oil pipe with oil cylinder 22, and the gap between the output of oil cylinder 22 and thin-walled cover 21 and the annular through-hole communicates.After starting oil pump 5, hydraulic oil makes the piston motion in the oil cylinder 22, thereby the hydraulic oil in the oil cylinder 22 is pressed in the gap between thin-walled cover 21 and the annular through-hole, thereby makes thin-walled overlap 21 radial contraction, and holds axle 2 tightly and make it circumferentially fixing.
As Fig. 4 and Fig. 5, to rotate in order when being pressed into, to prevent disk-like accessory 1, described supporting construction is provided with guide finger 9, and correspondence is provided with location structure on the disk-like accessory 1, and guide finger 9 is suitable with described location structure when being pressed into.Disk-like accessory 1 is the dish gear among the figure, and therefore the nose shape of described guide finger 9 is just suitable with the teeth groove of dish gear.Certainly, dissimilar according to disk-like accessory 1, the nose shape of guide finger 9 should change accordingly.
Assembling with dish gear and gear shaft comes detailed explanation the utility model propeller boss Desing of Interference Joint to press-fit the using method of alignment device below:
1, packed in the bottom of the gear shaft base of contraposition frock 10, the fine rotation gear shaft is adjusted down the reading of navigation watch 8, starts oil pump 5, makes thin-walled cover 21 hold gear shaft tightly, pressurize.Check is the reading of navigation watch 8 down, and notes down, and later every gear shaft is all adjusted its circumferential position by this reading.In being pressed into assembling process, note keeping the pressure gauge reading of oil pump 5 constant, guarantee that gear shaft is fixed.
2, will coil gear and be lifted on the gear shaft, the position of navigation watch 6 in the adjustment of fine rotation dish gear, and record reading, later every dish gear is all adjusted its circumferential position by this reading.
3, press-in device is installed, at first pull bar 16 is screwed in the end face screw of gear shafts, screw and put in place, then fairlead 11 is put into the dish gear, and will be pressed into frock 7 and be lifted on support set 12 is supported on the dish gear.Fairlead 11 plays positioning and guiding when being pressed into.Pull bar 16 passes piston 15 backs nut 23 is installed.
4, the elemental height of indicator gear upper surface is so that calculate its amount of being pressed into.
5, be pressed into the dish gear:
1. start oil pump 4, suppress fixed value P (bar), pressurize.
2. start oil pump 3, suppress definite value H (bar), the pressurize certain hour.
3. oil pump 4 is suppressed fixed value P (bar), pressurize; At this moment, the dish gear can easily be stirred.
4. oil pump 3 increases h (bar) on H (bar) basis, i.e. H (bar)+h (bar), pressurize certain hour.
5. oil pump 4 is suppressed fixed value P (bar), pressurize; At this moment, the dish gear can easily be stirred.
6. oil pump 3 increases h (bar) at H (bar)+h (bar) on the basis again, i.e. H (bar)+h (bar)+h (bar), pressurize certain hour.
7. the above-mentioned steps that circulates is encased in the position of regulation up to the dish gear, and at this moment, the dish gear can easily be stirred.If be pressed onto the position that a position difference of last navigation watch 6 pointers can be adjusted indicator by the rolling disc gear.
8. pressure leak process is that oil pump 4 remains fixed value P (bar) pressure, and oil pump 3 progressively, slowly pressure release is to zero, and then that oil pump 4 pressure releases are extremely zero, back-moving spring 17 resets.
Claims (12)
1. the propeller boss Desing of Interference Joint press-fits alignment device, it is characterized in that: this device comprises and is used for respectively contraposition frock (10) that axle (2) and disk-like accessory (1) are circumferentially located, and being pressed into frock (7) with described contraposition frock (10) is oppositely arranged, disk-like accessory (1) axially is pressed into and is sleeved on the axle (2) by being pressed into frock (7).
2. propeller boss Desing of Interference Joint as claimed in claim 1 press-fits alignment device, it is characterized in that: the described frock (7) that is pressed into comprises an expanding means, swells by the endoporus of described expanding means with disk-like accessory (1) when being pressed into.
3. propeller boss Desing of Interference Joint as claimed in claim 2 press-fits alignment device, it is characterized in that: described expanding means comprises oil pump (4), and described oil pump (4) is pressed into hydraulic oil by high-pressure oil pipe (19) mating surface of disk-like accessory (1) and axle (2).
4. press-fit alignment device as claim 1,2 or 3 described propeller boss Desing of Interference Joint, it is characterized in that: the described frock (7) that is pressed into comprises oil cylinder (14), the piston (15) of described oil cylinder (14) is connected with axle (2) by pull bar (16), and the cylinder body of described oil cylinder (14) is supported on the disk-like accessory (1) by support set (12).
5. propeller boss Desing of Interference Joint as claimed in claim 4 press-fits alignment device, it is characterized in that: the cylinder body of described oil cylinder (14) is supported on the support set (12) by thrust bearing (13).
6. propeller boss Desing of Interference Joint as claimed in claim 4 press-fits alignment device, it is characterized in that: an end of described pull bar (16) and axle (2) thread connection, the other end passes oil cylinder (14) and nut (23) is installed, and the protective cover (18) that is used to prevent pull bar (16) ejection is installed on the described oil cylinder (14).
7. propeller boss Desing of Interference Joint as claimed in claim 4 press-fits alignment device, it is characterized in that: be connected with back-moving spring (17) between the cylinder body of described oil cylinder (14) and the piston (15).
8. press-fit alignment device as claim 1,2 or 3 described propeller boss Desing of Interference Joint, it is characterized in that: described contraposition frock (10) comprises a supporting construction, described supporting construction is provided with and is used for following navigation watch (8) that axle (2) is circumferentially located, and is used for last navigation watch (6) that disk-like accessory (1) is circumferentially located.
9. propeller boss Desing of Interference Joint as claimed in claim 7 press-fits alignment device, it is characterized in that: described supporting construction is provided with the pre-tightening apparatus that is used for circumferential fixed axis (2).
10. propeller boss Desing of Interference Joint as claimed in claim 8 press-fits alignment device, it is characterized in that: described pre-tightening apparatus comprises the thin-walled cover (21) that is used for radially holding tightly axle (2), and the hydraulic system that is used to drive thin-walled cover (21) radial contraction.
11. propeller boss Desing of Interference Joint as claimed in claim 7 press-fits alignment device, it is characterized in that: described supporting construction is provided with guide finger (9), and disk-like accessory (1) is gone up correspondence and is provided with location structure, and guide finger when being pressed into (9) is suitable with described location structure.
12. press-fit alignment device as claim 1,2 or 3 described propeller boss Desing of Interference Joint, it is characterized in that: described axle (2) is a conical surface interference fit joint with disk-like accessory (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820303929U CN201371354Y (en) | 2008-12-31 | 2008-12-31 | Shaft hub interference joint pressing contraposition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820303929U CN201371354Y (en) | 2008-12-31 | 2008-12-31 | Shaft hub interference joint pressing contraposition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201371354Y true CN201371354Y (en) | 2009-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200820303929U Expired - Lifetime CN201371354Y (en) | 2008-12-31 | 2008-12-31 | Shaft hub interference joint pressing contraposition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201371354Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528422A (en) * | 2011-12-21 | 2012-07-04 | 浙江吉利汽车研究院有限公司 | Tooling for assembling thin-wall sleeve and casing and assembling method by aid of tooling |
| CN105345454A (en) * | 2015-12-02 | 2016-02-24 | 东方电气风电有限公司 | Main shaft bearing assembly deviation correcting system for main shaft of wind turbine generating set |
| CN106141635A (en) * | 2016-07-29 | 2016-11-23 | 中国北方发动机研究所(天津) | A kind of jacking mechanism for the assembling of dish shaft flange and assembly method thereof |
| CN106904497A (en) * | 2017-04-05 | 2017-06-30 | 北京中丽制机工程技术有限公司 | A kind of friction roller intrinsic frequency adjusting method and device |
| CN107160155A (en) * | 2017-07-27 | 2017-09-15 | 铜陵科达车辆装备有限责任公司 | Portable microcomputer controls rolling bearing pressing machine |
| CN107932412A (en) * | 2017-11-29 | 2018-04-20 | 陕西航空电气有限责任公司 | A kind of alternator fan pressing method |
| CN108655995A (en) * | 2018-05-28 | 2018-10-16 | 中国工程物理研究院材料研究所 | Thin-wall pipe is interference fitted guide-localization assembly device and its assembly method |
| CN116967739A (en) * | 2023-09-25 | 2023-10-31 | 成都瑞迪智驱科技股份有限公司 | High-precision assembly fixture and method for rigid gear and cross bearing of harmonic reducer |
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2008
- 2008-12-31 CN CN200820303929U patent/CN201371354Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102528422A (en) * | 2011-12-21 | 2012-07-04 | 浙江吉利汽车研究院有限公司 | Tooling for assembling thin-wall sleeve and casing and assembling method by aid of tooling |
| CN102528422B (en) * | 2011-12-21 | 2014-09-10 | 浙江吉利汽车研究院有限公司 | Tooling for assembling thin-wall sleeve and casing and assembling method by aid of tooling |
| CN105345454A (en) * | 2015-12-02 | 2016-02-24 | 东方电气风电有限公司 | Main shaft bearing assembly deviation correcting system for main shaft of wind turbine generating set |
| CN105345454B (en) * | 2015-12-02 | 2018-01-30 | 东方电气风电有限公司 | The main shaft bearing assembling deviation correcting system of wind generator set main shaft |
| CN106141635A (en) * | 2016-07-29 | 2016-11-23 | 中国北方发动机研究所(天津) | A kind of jacking mechanism for the assembling of dish shaft flange and assembly method thereof |
| CN106904497A (en) * | 2017-04-05 | 2017-06-30 | 北京中丽制机工程技术有限公司 | A kind of friction roller intrinsic frequency adjusting method and device |
| CN107160155A (en) * | 2017-07-27 | 2017-09-15 | 铜陵科达车辆装备有限责任公司 | Portable microcomputer controls rolling bearing pressing machine |
| CN107932412A (en) * | 2017-11-29 | 2018-04-20 | 陕西航空电气有限责任公司 | A kind of alternator fan pressing method |
| CN107932412B (en) * | 2017-11-29 | 2019-06-11 | 陕西航空电气有限责任公司 | A kind of alternator fan pressing method |
| CN108655995A (en) * | 2018-05-28 | 2018-10-16 | 中国工程物理研究院材料研究所 | Thin-wall pipe is interference fitted guide-localization assembly device and its assembly method |
| CN116967739A (en) * | 2023-09-25 | 2023-10-31 | 成都瑞迪智驱科技股份有限公司 | High-precision assembly fixture and method for rigid gear and cross bearing of harmonic reducer |
| CN116967739B (en) * | 2023-09-25 | 2023-12-12 | 成都瑞迪智驱科技股份有限公司 | High-precision assembly fixture and method for rigid gear and cross bearing of harmonic reducer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091230 |